Entries |
Document | Title | Date |
20080198102 | Display apparatus, driving method thereof, and electronic system - A display apparatus includes: a pixel array section including a row of scanning lines, a column of signal lines, and pixels in a matrix, with each of the pixels disposed at an intersection of both of the lines; and a drive section. The drive section performs line progressive scanning on the pixels. The pixel includes a light emitting device, a sampling transistor, a driving transistor, a switching transistor, and a holding capacitor. The sampling transistor samples a video signal in the holding capacitor, the driving transistor changes the device to a luminous state, the switching transistor becomes ON in advance of the sampling of the video signal to change the light emitting device to a non-luminous state, and the sampling transistor takes in the OFF voltage from the signal line to the driving transistor, thereby preventing a penetration current from flowing from the power source toward the fixed potential. | 08-21-2008 |
20080204374 | Method and apparatus for driving an AMOLED with variable driving voltage - The sharpness impression when displaying a movement on an AMOLED (Active Matrix Organic Light Emitting Display) shall be improved. For this purpose, an apparatus for driving a cell of an AMOLED is provided including driving means for applying a driving voltage to the cell and for applying a luminance control signal to the cell during a pregiven time frame. The apparatus further includes controlling means for varying the driving voltage within the time frame according to a predefined function of time. For example, the driving voltage may be varied in the form of a triangle so that the lighting time over the frame is reduced while a CRT like behavior is emulated. | 08-28-2008 |
20080204375 | Organic light emitting diode display device and driving method thereof - An organic light emitting diode (OLED) display device, including a pixel unit including a plurality of pixels connected to scan lines and data lines, a scan driver adapted to generate and supply scan signals to the scan lines, a data driver adapted to generate and supply data signals to the data lines, an optical sensor adapted to generate an optical sensor signal to correspond to an intensity of light, and a data conversion unit adapted to compare a predetermined reference value with the optical sensor signal so as to generate a selection signal for selecting one of at least three modes. The data conversion unit may be adapted to store an input image data or a changing data changed from the input image data to correspond with the selection signal. The data driver may generate the data signals to correspond to the input image data or the changing data stored in the data conversion unit. | 08-28-2008 |
20080204376 | AMOLED INCLUDING CIRCUIT TO SUPPLY ZERO DATA VOLTAGE AND METHOD OF DRIVING THE SAME - An active matrix organic electroluminescent display including a circuit to supply a zero data voltage, and a method of driving thereof. A driver of the organic electroluminescent display includes a zero data process block which outputs a zero data voltage enable signal when pixel data that is to be displayed is zero data, and a circuit to transmit zero data voltage corresponding to the zero data to a pixel in response to the zero data voltage enable signal. The organic electroluminescent display and the driver thereof separately include the circuit for supplying zero data voltage, and thus zero data can be accurately displayed. | 08-28-2008 |
20080204377 | Organic EL display device - The present invention realizes a high-quality display by optimizing a light emitting efficiency among pixels which differ in light emitting characteristic from each other by enabling to apply voltages corresponding to pixels which differ in color from each other while suppressing brightness irregularities attributed to a voltage drop of a power source line. Only power source lines Lv of sub pixels B and a bypass line Lb are connected with each other in a first row (X | 08-28-2008 |
20080211744 | Organic light emitting display and driving circuit thereof - An organic light emitting display includes a first light emitting control driver electrically coupled to a clock line, a negative clock line, and an initial driving line, and adapted to output a first light emitting control signal via a first light emitting control line, a first pixel unit electrically coupled to the first light emitting control line, a second pixel unit electrically coupled to the first light emitting control line; and a third pixel unit electrically coupled to the first light emitting control line. | 09-04-2008 |
20080211745 | Organic light emitting display and driving circuit thereof - A driving circuit including a plurality of light emitting control drivers includes an input terminal coupled to an initial driving line or a light emitting negative control line of a previous light emitting control driver, a first clock terminal and a second clock terminal that are electrically coupled to a first clock line and a first negative clock line that are phase-inverted, or a second clock line and a second negative clock line, respectively, and an output terminal and a negative output terminal adapted to generate an output signal and a negative output signal when receiving an input signal, a clock signal and a negative clock signal via the input terminal, the first clock terminal and the second clock terminal, respectively. | 09-04-2008 |
20080211746 | DRIVING CIRCUIT FOR AN OLED (ORGANIC LIGHT EMISSION DIODE), IN PARTICULAR FOR A DISPLAY OF THE AM-OLED TYPE - A driving circuit of an OLED diode is inserted between a first and a second voltage reference and having at least one input terminal receiving an input voltage signal and an output terminal for the generation of a driving current of the OLED diode, the driving circuit having at least one driver transistor having a first conduction terminal connected to the first voltage reference, a second conduction terminal connected to the output terminal and a control terminal connected to at least one first capacitor and one second capacitor. The first capacitor is inserted between this control terminal and an inner circuit node and the second capacitor is inserted between the inner circuit node and the second voltage reference, the driving circuit | 09-04-2008 |
20080211747 | Organic light emitting display - An organic light emitting display includes a first switching element including a control electrode electrically coupled to a scan line and between a data line and a first voltage line, a driving transistor electrically coupled between the first voltage line and a second voltage line, a second switching element including a control electrode electrically coupled to a light emission control line and between the first voltage line and the driving transistor, a third switching element including a control electrode electrically coupled to the scan line and between the second switching element and the driving transistor, a first storage capacitor that is electrically coupled between the first voltage line and the control electrode of the driving transistor, a second storage capacitor that is electrically coupled between the first storage capacitor and the second switching element, and an OLED electrically coupled between the driving transistor and the second voltage line. | 09-04-2008 |
20080218448 | Organic electro luminescence display and driving method of the same - Disclosed are an organic electro luminescence display and a driving method of the same. The present invention provides an organic electro luminescence display including a pixel unit for displaying an image to correspond to a scan signal, a light emission control signal and a data line. The image is composed of a plurality of frames. The organic electro luminescence display of the present invention includes a scan driver for supplying the scan signal and the light emission control signal to the pixel unit, a data driver for generating a data signal with a video data to supply the generated data signal to the pixel unit, a control unit for controlling a pulse width of the light emission control signal using a frame data which is the sum of the video data inputted to one frame and controlling one frame time according to the size of the frame data, and a power supply unit for supplying a first power and a second power to the pixel unit. | 09-11-2008 |
20080218449 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display including: a pixel unit to display an image, according to a data signal and a scan signal; a data driver to supply the data signal, according to a video signal; and a scan driver to supply the scan signal. The data driver includes a memory to store a corrected offset voltage and to control a voltage of the data signal according to the corrected offset voltage. | 09-11-2008 |
20080218450 | ORGANIC ELECTRO-LUMINESCENT DISPLAY AND METHOD OF MAKING THE SAME - An organic electro-luminescent display and a making method of the same. The organic electro-luminescent display according to the present invention includes a luminance control unit including a data sum-up unit to generate a frame data; a look-up table for storing an information corresponding to the light emission control signal to correspond to the frame data; an operator unit to generate a look-up table by using a value at the beginning step of luminance reduction, a value at the final step of luminance reduction, a pulse width of the light emission control signal at the beginning step of luminance reduction, and a pulse width of the light emission control signal at the final step of luminance reduction; and a luminance control signal driver for outputting a luminance control signal using the information corresponding to the light emission control signal stored in the look-up table. | 09-11-2008 |
20080218451 | Organic electroluminescence display - The voltage-current property of the specific pixel is measured to store the data on a single line in a line memory. The property data of adjacent pixels are compared. A failure determination unit detects whether or not the pixel to be compared is faulty. If it is determined as being faulty, the faulty pixel is removed from the pixel group to be compared. The burn-in determination unit performs the comparison using normal pixels only to provide the correct burn-in data. The calculation unit reflects the burn-in data in the image data from the host. | 09-11-2008 |
20080218452 | Image display apparatus - When an organic EL display apparatus enables display of a standard luminance mode and a high luminance mode, it takes long time to reset the gate potential of the OLED drive TFT to a given value in a standard mode. In the reset operation of the gate potential of an OLED drive TFT at the time of writing an image signal, in a standard mode, a precharge current is allowed to flow in the OLED element for a short period before the reset operation to set an initial value of the gate potential of the OLED drive TFT to be close to a supply potential or a reference potential. With the above operation, the variation of the OLED drive TFT gate potential after resetting is reduced. As a result, the light emitting period during one frame can be extended. Also, since a blanking period can be extended, it is possible to measure the characteristic of the OLED element by using the blanking period. | 09-11-2008 |
20080218453 | Organic electroluminescence display - In an organic EL display, correction is made for a difference in screen luminance between the case of measuring characteristics of OLED elements, and the case of not measuring the characteristics of the OLED elements. A data line for feeding image data items, and a detection line for measuring the characteristics of the OLED elements are connected to respective pixels. Detection of the characteristics of the OLED elements is executed by utilizing a specified period of a frame period. Because an image-displaying period is limited in a frame where measurement of the characteristics of the OLED element | 09-11-2008 |
20080218454 | Display apparatus and method for driving the same - In a display apparatus, as shown in FIG. | 09-11-2008 |
20080218455 | Organic electroluminescence display - The present invention is to provide an organic electroluminescence display including a plurality of pixels, each pixel being composed of a plurality of sub-pixels, each of the sub-pixels having: an organic electroluminescence element configured to have a structure arising from stacking a drive circuit and an organic electroluminescence light-emitting part connected to the drive circuit; wherein to the drive circuit of one sub-pixel of the plurality of sub-pixels included in one pixel, an auxiliary capacitor connected in parallel to the organic electroluminescence light-emitting part of the drive circuit is connected, and the auxiliary capacitor is provided in the same plane as that of the drive circuit. | 09-11-2008 |
20080224960 | Image Display Screen and Method for Controlling Said Screen - The invention relates to an image display screen including:
| 09-18-2008 |
20080224961 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting display capable of reducing or preventing damage due to static electricity by using a structure for reducing or preventing the damage due to static electricity and a method for manufacturing the same. A pixel region includes a plurality of data lines, a plurality of scan lines, and a plurality of pixels, the data lines crossing the scan lines, and the pixels being coupled to the data lines and the scan lines. A data driver is coupled to the data lines and transfers a data signal. A scan driver is coupled to the scan lines and transfers a scan signal. A discharge capacitor unit is located at a connection region between the pixel region and the scan driver. | 09-18-2008 |
20080224962 | IMAGE DISPLAY DEVICE - An image display device includes switches directly connected a constant current source to a self-luminous element to be able to detect a characteristic of the self-luminous element, generate a coordinates and convert information of the characteristic and coordinates into a system communication signal, transferring an input with a temperature variation to a system side. | 09-18-2008 |
20080224963 | DISPLAY APPARATUS AND ELECTRONIC DEVICE - A display apparatus, includes: a substrate; a plural light emitting elements provided on the substrate and each formed from a lower electrode, a light emitting function layer and an upper layer stacked in this order; a partition for element isolation provided on the substrate and having a plural apertures individually corresponding to the light emitting elements; and a black matrix disposed on the light extraction side of the light emitting elements and having a shape with which the black matrix covers over portions. Each of the apertures of the partition having a side wall is formed in such a tapering shape that the aperture width increases toward the light extraction side of the light emitting elements. The black matrix is provided in such a manner as to cover over an upper edge portion of the tapering shape on at least one side which defines each aperture of the partition. | 09-18-2008 |
20080224964 | Display apparatus, display-apparatus driving method and electronic equipment - In the present invention, there is provided a display apparatus including: a pixel array section including pixel circuits each having an electro-optical device, a write transistor configured to carry out a voltage storing process, a holding capacitor configured to hold the sampled video signal, and a driving transistor configured to drive the electro-optical device; first scan means for carrying out a selective scan operation in row units and driving each of the write transistors; second scan means for selectively supplying either a first or second electric potential synchronously with the selective scan operation for feeding a current to each of the driving transistors; and control means for sustaining a power-supply feed line in a floating state during a period ending at a time not earlier than the start of the voltage storing process after a voltage corresponding to the threshold voltage of the driving transistor has been held in the holding capacitor. | 09-18-2008 |
20080224965 | Pixel, organic light emitting display using the same, and associated methods - A pixel including an OLED, the pixel including a first transistor coupled between a data line and a first node, the first transistor being turned on by a low signal on an i-th scan line, a second transistor coupled between a first power source and a fifth transistor, a third transistor coupled between the gate electrode of the second transistor and an electrode of the second transistor that is coupled to the fifth transistor, the third transistor being turned on by a low signal on an (i−1)-th scan line, a fourth transistor coupled between a first reference voltage and the first node, the fourth transistor being turned on by the low signal on the (i−1)-th scan line, a storage capacitor coupled between the first node and the second node, and a compensator controlling a voltage of the second node corresponding to degradation of the OLED. | 09-18-2008 |
20080231556 | ACTIVE MATRIX OF AN ORGANIC LIGHT-EMITTING DIODE DISPLAY SCREEN - In an active matrix for an organic light-emitting diode display screen, each pixel is arranged between two row select lines, each line controlling at least a first switching transistor T | 09-25-2008 |
20080231557 | EMISSION CONTROL IN AGED ACTIVE MATRIX OLED DISPLAY USING VOLTAGE RATIO OR CURRENT RATIO - Compensation needed to be made for reduced light efficiency in aged sub-pixels of an active matrix organic light-emitting diode (OLED) display are determined using a current ratio or a voltage ratio pertaining to an aged sub-pixel relative to un-aged, reference sub-pixels. | 09-25-2008 |
20080231558 | EMISSION CONTROL IN AGED ACTIVE MATRIX OLED DISPLAY USING VOLTAGE RATIO OR CURRENT RATIO WITH TEMPERATURE COMPENSATION - Compensation needed to be made for reduced light efficiency in aged sub-pixels of an active matrix organic light-emitting diode (OLED) display are determined using a current ratio or a voltage ratio pertaining to an aged sub-pixel relative to un-aged, reference sub-pixels. When the current through the sub-pixels or the voltage across the sub-pixels are measured to determine the age of the sub-pixels, correction is made to the measured current or voltage to account for variations in the ambient temperature in which the OLED display is placed. | 09-25-2008 |
20080231559 | Display apparatus and driving method therefor, and electronic device - After a sampling transistor is turned ON at a first timing when a control signal has risen, during a sampling period from a second timing when a video signal has risen from a reference potential to a signal potential to a third timing when the control signal has fallen and is turned OFF, the sampling transistor samples and writes the signal potential in a holding capacitance, and negatively feeds back a current flowing into a drive transistor during the sampling period to the holding capacitance and applies mobility correction of the drive transistor on the written signal potential. A signal driver adjusts the second timing for the video signal supplied to respective signal lines to correct a backward shift of the third timing due to a transmission delay along a scanning line of the control signal output from the control scanner. | 09-25-2008 |
20080231560 | Display device - A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction or horizontal direction; and wherein with the control unit, the size of the buffer transistor is equal to or greater than the pixel pitch in the scanning direction of the laser beam. | 09-25-2008 |
20080231561 | Display device and manufacturing method thereof - A display device in which a light shielding film is formed so as not to increase the number of steps and its cost, is provided. The display device of the present invention includes a monitor element for controlling influence on a light-emitting element due to temperature change and change with time and a TFT for driving the monitor element, and the TFT for driving the monitor element is provided so as not to be overlapped with the monitor element. The display device of the present invention includes a first light shielding film provided so as not to be overlapped with a first electrode of the monitor element, and a second light shielding film provided so as to be overlapped with an outer edge portion of the first electrode. | 09-25-2008 |
20080238829 | COLOR ELECTRO-LUMINESCENT DISPLAY WITH IMPROVED EFFICIENCY - A full-color electroluminescent display with improved efficiency and increased color gamut that includes substantially complementary yellow and blue light-emitting elements, the chromaticity coordinates of which define the endpoints of a line that intersects a Planckian locus within the interval 0.175<=u′<=0.225 within the Commission Internationale de l'Eclairage (CIE) 1976 u′v′ chromaticity space. Also included in the display is a green light-emitting element of spectrum having a dominant wavelength between 500 nm and 540 nm and a full width, half maximum spectral bandwidth of 50 nm or less; and a red light-emitting element. | 10-02-2008 |
20080238831 | Organic electroluminescent display device and method of fabricating the same - An organic electroluminescent display device includes: a substrate; a gate line, a data line an a power line on the substrate, the gate line and the data line crossing each other to define a pixel region, the power line parallel to and spaced apart from the data line; a switching element connected to the gate line and the data line, the switching element including a switching gate electrode, a switching active layer, a switching source electrode and a switching drain electrode; a driving element connected to the switching element, the driving element including a driving gate electrode, a driving active layer, a driving source electrode and a driving drain electrode; a first passivation layer on the switching element and the driving element, the first passivation layer having a first contact hole exposing the driving drain electrode; a first shield pattern under the first contact hole, the first shield pattern including a same material and a same layer as the gate line; a first electrode on the first passivation layer, the first electrode connected to the driving drain electrode through the first contact hole; an organic electroluminescent layer on the first electrode; and a second electrode on the organic electroluminescent layer. | 10-02-2008 |
20080238832 | ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY DEVICE - The invention provides an organic electroluminescent device having at least an anode and a cathode forming a pair of electrodes. At least one electrode being transparent or translucent, and a buffer layer and an organic compound layer is disposed between the anode and the cathode. The organic compound layer has one or more layers including at least a light-emitting layer. At least one of the layers of the organic compound layer comprising at least one specific charge-transporting polyether. At least one of the layers having the charge-transporting polyether is provided in contact with the buffer layer. The buffer layer is provided in contact with the anode and has at least one charge injection material selected from the group consisting of an inorganic oxide, an inorganic nitride, and an inorganic oxynitride. The invention further provides a display device using the organic electroluminescent device. | 10-02-2008 |
20080238833 | LIGHT EMITTING DISPLAY DEVICE - An inspection display signal is supplied to a pixel to be inspected so that a light emitting element operates, and a current flowing through the light emitting element is detected. An element current detection signal having a number of bits which is less than a number of bits of a display data signal generated to be supplied to each pixel based on a video signal is stored in a memory according to a characteristic such as a change range and precision of the obtained element current and is used for variation correction. For example, only bit positions in which a value may change are stored in consideration of the change allowance range of the ON-current detection signal, so that a storage capacity to the memory is reduced without affecting correction precision of variation. | 10-02-2008 |
20080238834 | ELECTROLUMINESCENCE DISPLAY APPARATUS - During a blanking period of a video signal, an element driving transistor for controlling a drive current supplied to an EL element is operated in its saturation region to thereby set the EL element to an emission level, and a current flowing through the EL element at that time is detected. Each current detector includes a current detection amplifier and a successive approximation type AD converter, and a DA converter of the successive approximation type AD converter is commonly shared among a plurality of the AD converters. With this arrangement, sufficient AD converting speed can be attained while using a simple structure to execute current detection for correcting display variations. | 10-02-2008 |
20080238835 | Display apparatus and driving method therefor - A display apparatus disclosed herein includes a plurality of pixel circuits, each having a plurality of switches configured to receive a driving signal of a predetermined period and to be controlled for opening and closing operation by the driving signal, a drive circuit configured to control the open/closed state of the switches, being operable to scan the pixel circuits and open and close the switches in periods independent of each other. | 10-02-2008 |
20080238836 | Display apparatus and method for making the same - A pixel has an outer region extending linearly along a boundary with an adjacent pixel and an inner region extending along the inner side of the outer region. Wiring lines are arranged across the outer region and the inner region. An outer uneven zone is formed along the outer region and on a substrate due to level differences resulting from the presence of the wiring lines. Similarly, an inner uneven zone is formed along the inner region and on the substrate due to level differences resulting from the presence of the wiring lines. A pattern of a conductor film of which the wiring lines are made is formed properly such that recessed portions of the outer uneven zone are located directly behind their corresponding raised portions of the inner uneven zone, as viewed from inside the pixel. | 10-02-2008 |
20080246697 | Organic light emitting display - An organic light emitting display includes: a first shift register which is electrically coupled with a clock line, a negative clock line, and an initial drive line; a first NAND gate which is electrically coupled with the initial drive line, a first light emitting control line which is an output line of the first shift register, and a first clock line; a second NAND gate which is electrically coupled with the initial drive line, the first light emitting control line, and a second clock line; a first pixel part which is electrically coupled with a first scan line which is an output line of the first NAND gate; a second pixel part which is electrically coupled with a second scan line which is an output line of the second NAND gate; a third pixel part which is electrically coupled with the first scan line; and a fourth pixel part which is electrically coupled with the second scan line. | 10-09-2008 |
20080246698 | Organic light emitting display device and driving method thereof - An organic light emitting display device and a driving method thereof, capable of preventing malfunction due to an overload of a scan driver and an abnormal lighting phenomenon of pixels. | 10-09-2008 |
20080246699 | Organic light emitting display, and image modification method - An organic light emitting display, and an image modification method may include an analog to digital image signal processor configured to output present digital image data, a frame data analysis unit electrically coupled to the image signal processor, the frame data analysis unit configured to receive the present digital image data and a present data summation value, and to output a new data summation value, a light emission time supply unit electrically coupled to the frame data analysis unit and configured to supply a light emission time in accordance with the new data summation value, and a light emission control driver electrically coupled to the light emission time supply unit and configured to output a light emission signal in accordance with the light emission time output from the light emission time supply unit. | 10-09-2008 |
20080246700 | Display Apparatus - A display apparatus, that includes current driving type luminescent elements, has a driving system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT which performs the “on-off” function of the current for the luminescent element is of an N channel type, the potential of the common power supply line (“com”) is lowered below the potential of the opposite electrode (“op”) of the luminescent element to obtain a higher gate voltage (“Vgcur”). In this case, if the first TFT connected to the gate of the second TFT is of a P channel type, when using the potential of the potential-holding electrode (“st”) at the “on” state as a reference, potentials of the scanning signal (“Sgate”) at the lower potential and the common power supply line (“com”) are rendered of the same polarities with respect to this potential of the potential-holding electrode (“st”). Therefore, the potential of the image signal (“data”) to turn “on” can be shifted within the range of the driving voltage in the display apparatus in the direction to reduce resistances at the “on” states of the first TFT and the second TFT to reduce driving voltage and improve display quality. | 10-09-2008 |
20080252566 | Display, Display Method, and Electronic Device - A display, comprising: a planar display section; a pixel space provided next to a side adjacent to one surface of the display section and encapsulating a plurality of kinds of colorants, each kind having a different color; an accumulation section provided in the pixel space and accumulating the colorants; a separation system that separates a specific kind of colorant from the accumulated colorants in the accumulation section; a transfer system that selects at least one kind of colorant from the separated colorants and transfers this colorant to the side adjacent to the display section of the pixel space. The separation system performs separation utilizing the magnitude of a dielectrophoretic force generated in each colorant upon receipt of an alternating electric field of a specific frequency applied by this system, the magnitude varying depending on the kind of the colorant. A color of at least the one kind of colorant transferred by the transfer system is displayed at the display section. | 10-16-2008 |
20080252567 | Active Matrix Display Device - An active matrix display device has a display section including a plurality of pixel sections each controlling the light intensity of an electro-optical element, a data driver supplying a data value to a data line, a gate driver supplying a selection signal to a gate line, and a controller. The controller includes a video data processing section that outputs video data to each pixel section, a correction data processing section that calculates and outputs correction data based on the video data supplied to each pixel section or its output history, and a multiplexer that selectively outputs the data. The video data is displayed during a predetermined video period, and the correction data is displayed during a predetermined correction period. The sum of the video period and the correction period is equal to the display period of one frame in the display section. | 10-16-2008 |
20080252568 | Organic light emitting display and driving method thereof - An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses deterioration of the organic light emitting diode and threshold voltage and/or mobility of a drive transistor and modifies the data supplied to the pixel according to the sensed parameters. | 10-16-2008 |
20080252569 | Organic light emitting display and driving method thereof - An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses deterioration of the organic light emitting diode and threshold voltage and/or mobility of a drive transistor and modifies the data supplied to the pixel according to the sensed parameters. | 10-16-2008 |
20080252570 | Organic light emitting display and driving method thereof - An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage/mobility of a drive transistor is disclosed. The organic light emitting display senses deterioration of the organic light emitting diode and the threshold voltage and/or mobility of a drive transistor and modifies the data supplied to the pixel according to the sensed parameters. | 10-16-2008 |
20080252571 | Method of Compensating an Aging Process of an Illumination Device - The present invention relates to a method of compensating an aging process of an illumination device comprising at least one organic light emitting diode ( | 10-16-2008 |
20080259004 | PASSIVE MATRIX ELECTRO-LUMINESCENT DISPLAY SYSTEM - A passive matrix, electro-luminescent display system has a passive matrix, electro-luminescent display having an orthogonally oriented array of column and row electrodes and an electro-luminescent layer located between the electrodes at the intersection of each column and row electrode forming an individual light-emitting element. Drivers provide separate signals at different times to different groups of row electrodes within the array of row electrodes; wherein the row electrodes of each group simultaneously receive at least two different level signals. A display driver receives and processes the input image signal to provide a presharpened image control signal. Column drivers respond to the presharpened image control signal for simultaneously providing a signal to the multiple column electrodes within the array of column electrodes at the same time signals are provided to the groups of row electrodes so that the concurrence of row and column signals causes individual light-emitting element to produce light. | 10-23-2008 |
20080259005 | DISPLAY PANEL AND ELECTRONIC SYSTEM UTILIZING THE SAME - A display panel including a first sub-pixel, a second sub-pixel, and a processing unit is disclosed. The first sub-pixel includes a first storage capacitor for storing a first voltage. The second sub-pixel includes a second storage capacitor for storing a second voltage. The processing unit processes the first voltage and transmits the processed result to the first or the second capacitor according to a control signal group. | 10-23-2008 |
20080259006 | Driving Circuit of Organic Light Emitting Diode Display Panel and Precharging Method Using the Same - There is provided a driving circuit in which a voltage level can reach a full Vcc level when precharging and a precharging method using the same although a parasitic capacitance of an organic light emitting diode (OLED) panel increases. | 10-23-2008 |
20080266214 | SUB-PIXEL CURRENT MEASUREMENT FOR OLED DISPLAY - An active matrix drive system drives an emissive display device such as an organic light-emitting diode display and is configured to measure sub-pixel current in the emissive display device. One or more power column power lines of the emissive display device are turned off while sub-pixel current is measured. As a result, the sub-pixel current is relative large compared to the background current of the emissive display device, which facilitates accurate measurement of the sub-pixel current. | 10-30-2008 |
20080266215 | Organic light emitting display and driving method thereof - Disclosed is an organic light emitting display of improved an image quality. The organic light emitting display includes a frame memory for storing a data to correspond to a write clock and outputting the data stored according to a read clock; a signal generation unit for supplying the read clock; a data driver for converting the data, supplied from the frame memory, into a data signal and supplying the converted data signal to data lines; a scan driver for supplying a scan signal to scan lines; and pixels arranged near crossing points between the scan lines and the data lines, wherein the read clock has a higher frequency than the write clock. | 10-30-2008 |
20080272989 | Light Emission Panel Display Device - The light emission panel display device according to the present invention has a scan drive circuit ( | 11-06-2008 |
20080272990 | METHOD OF DRIVING A PIXEL AND LIQUID CRYSTAL DISPLAY PANEL IMPLEMENTING THE METHOD - The invention provides methods of driving a pixel and liquid crystal display panels implementing the methods. The invention generates an ideal data voltage corresponding to a gray level of the pixel, and generates a compensated data voltage corresponding to the gray level according to a polarity change of the pixel. The charging period of the pixel is divided into a first charging time segment and a second charging time segment. The invention charges the pixel by the compensated data voltage during the first charging time segment, and charges the pixel by the compensated data voltage during the second charging time segment. | 11-06-2008 |
20080272991 | Organic Electroluminescence Pixel, Organic Electroluminescence Device, and Manufacturing Method Thereof - An organic electroluminescence pixel, an organic electroluminescence device comprising the same, and method for manufacturing the organic electroluminescence device are provided. The organic electroluminescence pixel comprises a substrate, a first electrode, a first carrier-injection layer, a semi-trans-flective metal layer, an organic emitting layer, and a second electrode. The first electrode is formed on the substrate. The first carrier-injection layer, the semi-trans-flective metal layer, and the organic emitting layer are formed between the first electrode and the second electrode. At least one of the first electrode and the second electrode comprises a transparent electrode. | 11-06-2008 |
20080272992 | Organic electro-luminescent display device and method of manufacturing the same - An organic electroluminescence device which includes a power line formed on the same layer as source and drain electrodes of a thin film transistor (TFT) and formed on a substrate on which the TFT is formed, a first insulating layer formed on the TFT, a lower electrode that electrically connected to one of the source and drain electrodes of the TFT and disposed on the first insulating layer, a first auxiliary power line and a second auxiliary power line formed on the same layer as the lower electrode in the second insulating layer, a second insulating layer formed on an edge portion of the lower electrode and not formed on the second auxiliary power line, wherein an opening that exposes a portion of the lower electrode is formed, an organic film formed on a substrate; and an upper electrode formed on the substrate. | 11-06-2008 |
20080284688 | Method for Driving, and a Circuit of an Element of an Illuminated Display - In illuminated displays with lighting elements which are driven by means of a control voltage, the voltage drop on a supply line, which supplies two or more lighting elements, is compensated for. The currents for all of the light elements which are connected to a supply line, and the known resistances are used to calculate the potential profile of the supply line for this purpose. The control voltages for the light elements are changed such that the actual potential on the supply line for each element is taken into account. Fluctuations in the brightness of the illuminated display resulting from potential differences are avoided. One element of an illuminated display has a current control means, a signal retaining means, a light emitting means and means for interrupting the current flow through the light emitting means. The control voltage is adjusted with the current flow interrupted, so that no potential differences exist on the supply line. The signal retaining means hold the control voltage relative to the potential on the line at the respective position of the lighting element. An illuminated display has adjustable voltages for the supply lines. The voltages are chosen to be sufficiently high that the minimum required voltage for setting the desired currents through the lighting elements is achieved. | 11-20-2008 |
20080284689 | DISPLAY FOR MULTI-FUNCTION KEYPAD AND ELECTRONIC DEVICE HAVING THE SAME - A display for a multi-function keypad and an electronic device including the display. The display for a multi-function keypad includes: a display panel having a plurality of display regions arranged in a matrix pattern and a non-display region surrounding the plurality of display regions; a circuit board on the display panel and including a plurality of openings corresponding to the display regions, and a plurality of keys near peripheral edges of the openings and corresponding to the non-display region; and a pad on the circuit board and including a plurality of transparent windows corresponding to the openings, and a plurality of pressing units near peripheral edges of the transparent windows and corresponding to the plurality of keys. | 11-20-2008 |
20080284690 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - Disclosed is an organic light emitting display device. The exemplary organic light emitting display device according to an exemplary embodiment of the present invention comprises a substrate, a displaying area located on the substrate, the displaying area comprising a plurality of sub pixels, each of which has an emission area; and a dummy area located on an area of the substrate other than the displaying area, the dummy area comprising a plurality of dummy patterns, wherein the dummy pattern contains the same material as that of the emission area. | 11-20-2008 |
20080284691 | Organic light emitting diode display device and driving method thereof - An organic light emitting diode display device and a driving method thereof are disclosed. The organic light emitting diode display device according to an embodiment of the invention comprises a display panel including a plurality of data lines, a plurality of gate line pairs crossing the data lines, and a plurality of light emitting cells which include an organic light emitting diode device, first and second cell driving circuits for alternately driving the organic light emitting diode device; a data voltage generator supplying a data voltage of a first polarity to the data lines; a compensation voltage generator supplying a compensation voltage of a second polarity to the data lines; and a scan driver for sequentially supplying scan pulses to the gate line pairs, wherein the first and second cell driving circuits are alternately supplied with the data voltage and the compensation voltage in response to the scan pulses to alternately driven the organic light. | 11-20-2008 |
20080291135 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device is disclosed. The organic light emitting device includes a display unit including a plurality of subpixels, a host memory unit that stores image data received from the outside by the frame, a data adjusting unit that fetches the image data frames stored in the host memory unit by the bit and converts one frame into a plurality of subfields and one display memory unit that stores the image data frame converted into the plurality of subfields by the data adjusting unit. When the data adjusting unit converts the frame into the plurality of subfields, the data adjusting unit inserts a black time into at least one of the plurality of subfields. | 11-27-2008 |
20080291136 | DISPLAY DEVICE, VIDEO SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device provided with a display portion, in which pixels having a light-emitting element for self-light-emitting, and a pixel circuit for controlling a current applied to a light-emitting element according to a voltage signal are arranged in a matrix, provided with an average luminance calculation portion calculating an average of luminance of an input video signal, and a light-emitting time setting portion setting a real duty defined every one frame by which light-emitting time for light emitting of the light-emitting element according to a calculated average luminance, wherein the light-emitting time setting portion sets the real duty in such a way that a light-emitting amount defined by a standard duty set beforehand and a maximum luminance among those of a video signal, and a light-emitting amount defined by a real duty to be set and an average luminance become the same as each other. | 11-27-2008 |
20080291137 | DRIVER DEVICE FOR AN ORGANIC EL PASSIVE MATRIX DEVICE - A driver device is provided for an organic EL passive matrix device that achieves reduction in power consumption and suppression of uneven luminance at a low cost. The driver device includes a column driver, a first row driver, a second row driver, a memory, and a power supply/control signal input. An anode of each organic EL element of the organic EL passive matrix device is connected to an output of the column driver, and cathodes in a row are connected together to an input of the row driver. In the driver device, the column driver is disposed in the vicinity of one peripheral side of the IC, and each of the row drivers is disposed in the vicinity of one of the two peripheral sides adjacent to the peripheral side at which the column driver is disposed. These three drivers are packaged on a single integrated chip (IC) chip. | 11-27-2008 |
20080291138 | Display device, driving method thereof, and electronic device - Disclosed herein is a display device including: a pixel array unit; and a driving unit; wherein the pixel array unit includes first scanning lines and second scanning lines in a form of rows, signal lines in a form of columns, and pixels in a form of a matrix, the pixels being disposed at parts where the first scanning lines and the signal lines intersect each other, each pixel includes a drive transistor of an N-channel type, a sampling transistor, a switching transistor, a retaining capacitance, and a light emitting element, the driving unit includes a write scanner for sequentially supplying a control signal to each first scanning line, a drive scanner for sequentially supplying a control signal to each second scanning line, and a signal selector for alternately supplying a signal potential as a video signal and a predetermined reference potential to each signal line. | 11-27-2008 |
20080297448 | Oled Display Apparatus - An organic light emitting diode (OLED) display apparatus having four types of light producing dots, including R (red), G (green), B (blue), and W (white) dots, includes detecting the amount of high frequency components of a portion of a color image to be displayed, or calculating average brightness or power of display from input image data; or detecting the amount of current flowing in display; or responding to a user input instruction; or responding to a battery capacity; and adaptively changing the usage ratio of W dots accordingly. | 12-04-2008 |
20080297449 | Display device - A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage-capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage-capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction; and with the control unit, buffer transistors for outputting a pulse signal for sampling to an input video signal to each signal line are arrayed in a column in the longitudinal direction of the laser beam irradiation. | 12-04-2008 |
20080297450 | ORGANIC ELECTROLUMINESCENT DEVICE - An organic electroluminescent device comprises: a substrate; a display unit located on the substrate and including a plurality of subpixels; a sealing region located at the outer periphery of the display unit and defined to form a sealing member; and a plurality of wiring lines connected to the display unit and disposed on the lateral side of the display unit, some of the plurality of wiring lines are respectively divided into two or more in the sealing region. | 12-04-2008 |
20080303754 | ELECTROLUMINESCENCE DISPLAY APPARATUS - In performing a display in accordance with a video signal, a display signal for inspection is supplied to a pixel within a predetermined inspected row to operate an EL element therein and to thereby detect a current that flows through the EL element. The current detection data is stored in a volatile primary memory. In accordance with data obtained in this manner, a variation correcting section sequentially corrects data signals to be supplied to the respective pixel. At the time of turning on power, the variation correcting section performs the correction using the current detection data saved in a secondary memory. With this arrangement, it is possible to execute display variation correction from immediately after turning on power, and it is also possible to execute real-time correction. | 12-11-2008 |
20080303755 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND MOTHER SUBSTRATE THEREOF - An organic light emitting display device capable of being inspected in a mother substrate unit, and a mother substrate of an organic light emitting display device including a plurality of organic light emitting display devices including data lines and scan lines; and scribing lines arranged between the organic light emitting display devices in a row direction or a column direction and partitioning regions of the organic light emitting display devices, wherein the data lines of the organic light emitting display device formed inside a region defined by first to fourth scribing lines are electrically coupled with a first pin-contact unit formed outside the first scribing line, and the scan lines of the organic light emitting display device formed inside a region defined by the first to fourth scribing lines are electrically coupled with a second pin-contact unit formed outside the second or third scribing lines, which are orthogonal to the first scribing line and parallel with each other. | 12-11-2008 |
20080309593 | Liquid Crystal Display Device - A liquid crystal display device includes a liquid crystal panel and an illumination unit. The illumination unit has a planar light emitting region formed by an EL element. The light emitting region is formed by a plurality of linear light emitting regions that extend in a direction perpendicular to the vertical scanning direction of liquid crystal. The linear light emitting regions are switched between a light emitting state and a non-light emitting state based on a command signal from a controller in a manner that the linear light emitting regions sequentially emit light in synchronization with vertical scanning of the liquid crystal. Each linear light emitting region is controlled to be in the non-light emitting state at least during a drive data rewriting period of a portion of the liquid crystal immediately above the linear light emitting region. | 12-18-2008 |
20080309594 | CONTROL OF AN ELECTROLUMINESCENT DISPLAY - A device for controlling an electroluminescent matrix display by successive selection of its lines, including a column control circuit having circuitry capable of placing, at the beginning of the selection of a line, the display column at a precharge voltage based on the operating voltage of the previous line, the column control circuit also having circuitry capable of modifying the precharge voltage according to the difference between luminance instructions of the previous line and those of the selected line. | 12-18-2008 |
20080309595 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period. | 12-18-2008 |
20080316149 | Electro-luminescence pixel, panel with the pixel, and device and method for driving the panel - An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode. | 12-25-2008 |
20080316150 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE - An organic light emitting diode (OLED) display device minimizes a threshold voltage variation of a drive transistor in a pixel circuit, increases an aperture ratio, and minimizes power consumption by applying a same range of data voltages to respective pixels. The OLED display device includes a first capacitor electrically connected between a first node and a power supply line; and a second capacitor electrically connected between the first node and a second node, wherein capacitances of the first and second capacitors are different from each other and adjustable. | 12-25-2008 |
20080316151 | Electro-optical apparatus and method of driving the electro-optical apparatus - The invention provides an electro-optical apparatus that can prevent a shift in a threshold voltage of an amorphous silicon transistor while driving an organic EL device in a pixel circuit including the amorphous silicon transistor. A characteristic-adjustment circuit can be provided, which has a function of returning a shift in the threshold voltage of the amorphous silicon transistor included in the pixel circuit to the original state. | 12-25-2008 |
20080316152 | Transistor circuit, display panel and electronic apparatus - A transistor circuit is provided including a driving transistor where conductance between the source and the drain is controlled in response to a supplied voltage, and a compensating transistor where the gate is connected to one of the source and the drain, the compensating transistor being connected so as to supply input signals to the gate of the driving transistor through the source and drain. In a transistor circuit where conductance control in a driving transistor is carried out in response to the voltage of input signals, it is possible to control the conductance by using input signals of a relatively low voltage and a variance in threshold characteristics of driving transistors is compensated. With this transistor circuit, a display panel that can display picture images with reduced uneven brightness is achieved. | 12-25-2008 |
20090002280 | ORGANIC LIGHT EMITTING DEVICE AND METHOD OF DRIVING THE SAME - An organic light emitting device and a method of driving the same are disclosed. The organic light emitting device includes a display unit including a pixel including a plurality of subpixels, a scan driver connected to the display unit to supply a scan signal to the pixel, a data driver connected to the display unit to supply a data signal to the pixel, a switch unit positioned between one output terminal of the data driver and the subpixel, and a controller supplying a control signal for controlling turn-on/off operations of the switch unit to the switch unit. The switch unit includes a plurality of switches. One of the plurality of switches is turned on during an n-th scan period, maintained in a turn-on state, and turned off during an (n+1)-th scan period. | 01-01-2009 |
20090002281 | ACTIVE MATRIX ORGANIC ELECTROLUMINESCENCE DISPLAY AND ITS GRADATION CONTROL METHOD - An active matrix organic electroluminescence(EL) display comprises plural selection and data lines mutually crossed, and a pixel circuit connected to the selection and data lines and having switching devices, a storage capacitor and an organic EL device. In a part of a period that the pixel circuit connected to the selection line is being selected, an applied first data signal is held as a voltage at the storage capacitor of the selected pixel circuit. After the selection signal applying, a first current according to the held voltage is supplied to the organic EL device, and this emits light at luminance according to the first current. In another part of the period, a second current according to an applied second data signal is supplied to the organic EL device of the selected pixel circuit, and this emits light at luminance according to the second current. | 01-01-2009 |
20090002282 | EL display panel, power supply line drive apparatus, and electronic device - Disclosed herein is an electroluminescence display panel including: a pixel circuit; a signal line; a scan line; a drive power supply line; a common power supply line; a power supply line drive circuit; a high-potential power supply line; and a low-potential power supply line. | 01-01-2009 |
20090002283 | Organic electroluminescent device - An organic electroluminescent device comprises: a substrate; a display unit located on the substrate and including a plurality of subpixels; a sealing region located at the outer periphery of the display unit and defined to form a sealing member; and a plurality of wiring lines connected to the display unit and disposed on the lateral side of the display unit, more than a part of the plurality of wiring lines located in a sealing member forming region, among the plurality of wiring lines, has a narrow line width which is 10 to 50% of that of the wiring lines located in other regions. | 01-01-2009 |
20090002284 | Image Display Apparatus - It is an object of the invention to provide an image display apparatus in which noticeability of image persistence of a self-luminous device can be suppressed to a low level without performing an electric control and by a simple configuration. | 01-01-2009 |
20090009439 | PIXELS AND DISPLAY PANELS - A pixel and a display panel using the pixel are provided. In the pixel, a driving element provides a driving circuit according to a data signal and a reference voltage to drive a light-emitting element to emit light. The electrical difference of the driving elements due to the fabrication process thereof does not affect the brightness of the light-emitting elements. Moreover, unequal brightness resulted from the equivalent resistance of the power lines is also prevented. | 01-08-2009 |
20090009440 | DISPLAY DEVICE INCLUDING AN ORGANIC EL DEVICE - A self-luminescence display device, in which dispersion in display among a plurality of pixels, caused by dispersion in characteristics among drive thin-film transistors, is decreased and uniform display free of unevenness can be obtained. The device includes a plurality of pixels having current drive type luminescent elements, and parallel-connected n (n≧2) thin-film transistors to feed a drive current to the respective current drive type luminescent elements. The transistors are arranged in different pixels, respectively, for example, in a first region of pixels adjacent to one another along a first direction. A second region of dummy pixels can be provided on at least one side of said first region along said first direction. | 01-08-2009 |
20090015521 | ACTIVE MATRIX DISPLAY DEVICES - An active matrix display device stores a transistor drive voltage on a storage capacitor ( | 01-15-2009 |
20090015522 | ACTIVE MATRIX-TYPE DISPLAY DEVICE - When performing gradation expression using a time division driving method, an operational frequency of a driving circuit is suppressed, and non-light emitting time is eliminated to increase the light emitting time. Each of a number of pixel circuits includes a light emitting element, a driver element for turning on or off a driving current of the light emitting element, a switching element for controlling connection of a gate electrode of the driver element with a signal line, and a capacitance to which a signal voltage supplied from the signal line to the gate electrode of the driver element is written. | 01-15-2009 |
20090015523 | Organic Electroluminescence display device - Provided is an organic electroluminescence display device, in which when center deviations in film formation of organic electroluminescence layers in an arrangement direction of a sub-pixel aperture corresponding to a red light, a sub-pixel aperture corresponding to a green light, and a sub-pixel aperture corresponding to a blue light are denoted by LER(X), LEG(X), and LEB(X) and the center deviations in the film formation of the organic electroluminescence layers in a direction perpendicular to the arrangement direction are denoted by LER(Y), LEG(Y), and LEB(Y), any one of the following formulae is satisfied: LEG(X)≦LEB(X); LEG(X)≦LER(X); LEG(Y)≦LEB(Y); and LEG(Y)≦LER(Y). | 01-15-2009 |
20090021453 | FASHION ACCESSORY INCLUDING ALTERNATING LIGHT EMITTING AND NON-LIGHT EMITTING ELEMENTS OF CONSISTENT LENGTHS - The present invention discloses a fashion accessory for nightclub wear. The fashion accessory can include an article of jewelry that includes multiple light-emitting elements, multiple non-light-emitting elements and a binding element. Each of the light-emitting elements can emit light based on electroluminescence, phosphorescence, chemoluminescence, or radioluminescence. The binding element, can connect the light-emitting elements and the non-light-emitting elements together along a linear axis. A length of each light-emitting element and non-light emitting element measured along the linear axis can be approximately equivalent, or at least the lengths of light-emitting elements can be equivalent to each other and lengths of non-light emitting elements can be of equivalent lengths to each other. Further, the light-emitting elements and the non-light-emitting elements can be arranged in an alternating light-dark pattern in which no two light-emitting elements are adjacently positioned and in which no two non-light-emitting elements are adjacently positioned. | 01-22-2009 |
20090021454 | DISPLAY DEVICE, AND METHOD FOR REPAIRING A DEFECTIVE PIXEL - A display device | 01-22-2009 |
20090027309 | DISPLAY APPARATUS - A display apparatus which can decrease a flicker with the resolution of a moving image being heightened, and further to decrease the color breakup at the edge portion of the moving image, drives an organic EL device | 01-29-2009 |
20090027310 | Pixel, organic light emitting display using the same, and associated methods - A pixel including an organic light emitting diode, a second transistor controlling a current supplied to the organic light emitting diode, a pixel circuit configured to compensate a threshold voltage of the second transistor; and a compensating unit controlling a voltage of a gate electrode of the second transistor in order to compensate for deterioration of the organic light emitting diode. The compensating unit includes seventh and eighth transistors coupled in series between the organic light emitting diode and a first power source, the seventh and eight transistors being commonly connected to a fourth node therebetween, first and second feedback capacitors coupled in series between the fourth node and a second node, the second node being coupled to the gate electrode of the second transistor, and a ninth transistor coupled between a predetermined voltage source and a fifth node that is common to the first and second feedback capacitors. | 01-29-2009 |
20090027311 | Organic light-emitting diode (OLED) display apparatus and method of driving the same - An organic light-emitting diode (OLED) display apparatus, including a control unit to receive an image signal and to generate a frame-based image data signal and a frame identification signal based at least in part on the received image signal, the frame identification signal being synchronized with the frame-based image data signal, a driving voltage supply unit to generate a first voltage for a switching unit and a second voltage for a display unit, and a switching unit to receive the first voltage and the frame identification signal and to supply the first voltage for the display unit based at least in part on the frame identification signal. | 01-29-2009 |
20090027312 | ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display that can minimize degradation of a drive transistor comprising a first switching element whose control electrode is electrically coupled to a scan line, being electrically coupled between a data line and a first voltage line for transmitting a data signal; a drive transistor whose control electrode is electrically coupled to the first switching element, being electrically coupled between the first and second voltage lines; an organic light emitting diode electrically coupled to the drive transistor, displaying an image by a current supplied through the drive transistor; a first capacitive element electrically coupled between the control electrode of the drive transistor and the first switching element; a second capacitive element electrically coupled between the first capacitive element and the second voltage line; a second switching element electrically coupled between the first voltage line and the control electrode of the drive transistor; a third switching element electrically coupled between the first switching element and the drive transistor; a fourth switching element electrically coupled between the control electrode of the drive transistor and the second voltage line; and a fifth switching element electrically coupled between the drive transistor and the second voltage line. | 01-29-2009 |
20090027313 | Imaging device - To determine a deterioration and maintain a high-quality image without unevenness of brightness by performing a precise correction, a detection scanning line for selecting a pixel which detects a deterioration of a pixel, a detection line for informing the outside of the display area of the property of a pixel selected for detecting the deterioration, a deterioration determination means for determining a deterioration amount based on a voltage corresponding to a current detected by the detection line, and a deterioration correction means (computation circuit) for reflecting the determination result of the deterioration determination means in image data supplied to the pixel, are provided. | 01-29-2009 |
20090027314 | Imaging device and method of correction pixel deterioration thereof - In a display mode, a signal driving circuit (DAC) transmits image signals to the pixels selected by a scanning circuit for display and first switches of switch units. Then, a power supply circuit supplies a current corresponding to the transmitted signal to the pixels. Then, organic EL elements provided in the pixels are driven to emit light, thereby displaying an image. In order to correct the deterioration of the organic EL elements, first, a constant current flows from a current source to the organic EL elements of the pixels selected by a scanning circuit for detection and second switches and a voltage corresponding to the constant current applied to the organic EL element is detected. The detected voltage is input to an AD converter through a buffer amplifier, and the AD converter converts the voltage into a digital value, and transmits the digital value to a signal correction control unit. When the organic EL element deteriorates, the detected digital value varies. Therefore, the signal correction control unit corrects the signal from the signal driving circuit, thereby correcting the deterioration of the organic EL element. | 01-29-2009 |
20090027315 | Organic light emitting display and driving method thereof - An organic light emitting display is disclosed. The display comprises: a scan driver for sequentially supplying a scan signal to scan lines during scan periods of a plurality of sub-frames included in a frame; a data driver for supplying a data signal to data lines when the scan signal is supplied; pixels disposed at a display region of a panel to be coupled to the scan lines and the data lines, and receiving a first power source voltage and a second power source voltage; at least one dummy organic light emitting diode disposed at a non-display region of the panel; and a power source block for supplying an electric current to the dummy organic light emitting diode and for generating the first power source voltage based on a voltage of the dummy organic light emitting diode corresponding to the electric current. | 01-29-2009 |
20090033596 | Display device - Example embodiments relate to a display device having first and second substrates arranged opposite to each other, a semiconductor device on the first substrate, an organic light emitting element on the first substrate and an optical unit between the organic light emitting element and the second substrate. The display device may be configured to adjust angle viewing modes, e.g., a narrow angle viewing mode and a wide angle viewing mode, by selectively applying a voltage to the organic light emitting element and the optical unit. | 02-05-2009 |
20090033597 | LIGHT EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME - A light emitting display and a method of manufacturing the same. The light emitting display includes a substrate, a plurality of first and second signal lines that cross each other on the substrate, a plurality of organic light emitting diodes (OLEDs) coupled between the first signal lines and the second signal lines, a power source supply line for supplying a power source voltage to the OLEDs, and a plurality of inspection signal lines coupled to at least one of the first signal lines or the second signal lines. At least one of the inspection signal lines is discontinuous at a region overlapping the power source supply line and ends of the discontinuous inspection signal line at the region overlapping the power source supply line are coupled to each other through a conductive region under the inspection signal line. | 02-05-2009 |
20090033598 | Organic light emitting display - Disclosed is an OLED in which separation regions of spacers in odd and even rows are formed so that a fine metal mask (FMM) between light emission layers may move without being caught in the spacers. The OLED includes even and odd spacers protruding upwardly between light emission layers and are separated by separation regions. The separation regions of each row of spacers is aligned with spacers of adjacent rows and are not aligned with the separation regions of the adjacent rows. | 02-05-2009 |
20090033599 | ACTIVE MATRIX DISPLAY APPARATUS AND DRIVING METHOD THEREOF - An active matrix display apparatus comprising two-dimensional arranged pixel circuits each including a display element connected with a signal line for supplying a current thereto and a scanning line, and further including a drive transistor and a capacitor, one terminal thereof being connected to a control terminal of the drive transistor, wherein a first main conductive terminal of the drive transistor and the other terminal of the capacitor are connected to a lighting power source for supplying a current to the display element, and wherein at the current writing operation, the current supplied to the signal line is conducted to the drive transistor and at the lighting operation, the conductive current is injected into the display element so that before completion of the write operation, a voltage drop by a predetermined value is started to the voltage of the lighting power source and is kept continued for a predetermined period. | 02-05-2009 |
20090033600 | Light Emitting Device and Method of Driving the Light Emitting Device - A light emitting device that achieves long life, and which is capable of performing high duty drive, by suppressing initial light emitting element deterioration is provided. Reverse bias application to an EL element ( | 02-05-2009 |
20090040149 | MATRIX ARRAY DRIVE DEVICE, DISPLAY AND IMAGE SENSOR - A matrix array drive device according to the present invention includes: a horizontal scanning circuit controlling signal electrodes in a matrix array such that data signals corresponding to N rows of the matrix array are latched one row after another every horizontal scanning period of a predetermined length and a latch output for each row is continued to be produced for every horizontal scanning periods of N rows; and a vertical scanning circuit controlling scanning electrodes in the matrix array such that the matrix array is simultaneously driven N rows at a time and rows to be driven is shifted one row every horizontal scanning period. | 02-12-2009 |
20090040150 | ELECTRIC CURRENT DRIVING TYPE DISPLAY DEVICE - In a pixel circuit | 02-12-2009 |
20090046040 | DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - Disclosed herein is a display device including a pixel array section; power supply lines; and auxiliary electrodes, wherein the pixels each have an auxiliary capacitance, and one of electrodes of the auxiliary capacitance is connected to the source electrode of the drive transistor, and an other electrode connected to the auxiliary electrode for each pixel. | 02-19-2009 |
20090046041 | Display device and electronic equipment - The present invention provides a display device including a pixel array section, the pixel array section having pixels arranged in a matrix form, each of the pixels including: an electro-optical element; a write transistor; a holding capacitance; a drive transistor; and a switching transistor; a write scan line disposed for each of pixel rows of the pixel array section and adapted to convey a write signal to be applied to the gate electrode of the write transistor; and a correction scan line, wherein the wiring structure of the write scan line does not intersect with the wiring pattern connected to the gate electrode of the drive transistor. | 02-19-2009 |
20090051627 | DISPLAY METHOD OF EMISSION DISPLAY APPARATUS - Sticking of a Pixel is suppressed to improve the life of a display panel. In an emission display apparatus with a display panel in which a plurality of pixels each having at least one subpixel are disposed. A first display method of emitting light with only a pixel P(i,j) serving as an emission center and a second display method of allocating luminance of the pixel P(i,j) serving as an emission center to nearby pixels surrounding the pixel are combined in a controllable manner. A high-resolution mode with a high ratio of the first display method and a long-life mode with a high ratio of the second display method are switched therebetween depending on a spatial change or time change of image input data, an emission time, a degradation rate, a temperature, an emission luminance, and a display time. | 02-26-2009 |
20090058769 | ACTIVE MATRIX DISPLAY DEVICE - An active matrix display device, wherein a unit pixel comprising a plurality of sub-pixels is correlated to video data having bits corresponding to a plurality of gray scale levels for a pixel, one bit of the video data is correlated to at least one frame display sub-pixel in the unit pixel, directly written onto the frame display sub-pixel, and displayed for one frame period, and the remaining plurality of bits of the video data are temporarily stored in a frame memory, separated into sub frames and written onto at least one other sub-frame display sub-pixel of the unit pixel, and displayed separately for sub-frame periods. | 03-05-2009 |
20090066613 | DISPLAY APPARATUS - A display apparatus of the present invention has EL elements and pixel circuits | 03-12-2009 |
20090066614 | DISPLAY DEVICE - A display device including independent power sources for a display use and a detection use, display elements, switches ( | 03-12-2009 |
20090073092 | Display Device - In one embodiment, a display device of the present invention includes capacitors provided between a gate and a source of a driver TFT. During a select period, a voltage is fed to the gate terminal of the driver TFT, and a voltage is fed to the source terminal of the driver TFT. Thereafter, during a threshold correction period, the gate voltage of the driver TFT is retained to make the source voltage of the driver TFT equal to Vda−Vth (03-19-2009 | |
20090073093 | Display Device and Electronic Apparatus - According to one feature of the invention, a display device comprises a pixel including a first sub-pixel having a first light-emitting element and a second sub-pixel having a second light-emitting element, a first source driver connected to a first source line included in the first sub-pixel, and a second source driver connected to a second source line included in the second sub-pixel. The first sub-pixel and the second sub-pixel are provided over one surface of a light-transmitting substrate, and a first display region using the first sub-pixel over one surface of the substrate and a second display region using the second sub-pixel over the opposite surface the substrate are provided. Accordingly, it is possible to provide a display device that realizes sophistication and a high added value, which includes a display region in each of one and the opposite sides. | 03-19-2009 |
20090079676 | DISPLAY APPARATUS AND DRIVE METHOD THEREOF - A display apparatus comprises a display section including a display panel having a plurality of arranged display pixels, a display state of each of the display pixels being changed by an electric field generated between a pair of electrodes arranged to be opposed to each other; a luminous section including a luminous panel having a plurality of luminous pixels arranged correspondingly to each of the plurality of display pixels; and a control section for controlling the display state of one of the display pixels in the display panel by making an arbitrary one of the luminous pixels in the luminous panel emit a light. | 03-26-2009 |
20090079677 | Driving of data lines used in unit circuit control - The display matrix section | 03-26-2009 |
20090085843 | ELECTRONIC DEVICE, MANUFACTURING METHOD OF THE SAME AND ELECTRONIC APPARATUS - Disclosed herein is an electronic device including, an active matrix region, a short-circuit line, electrostatic protection elements, and a light-shielding film. | 04-02-2009 |
20090085844 | Display device, driving method of the same and electronic apparatus using the same - A display device includes a pixel array section and a driving section. The pixel array section includes scanning lines arranged in rows, signal lines arranged in columns, and pixels arranged in a matrix. Each of the pixels includes at least a sampling transistor, a drive transistor, a holding capacitance, and a light-emitting device. The sampling transistor has its control terminal connected to the scanning line and its pair of current terminals connected between the signal line and the control terminal of the drive transistor. The drive transistor has one of its pair of current terminals connected to the light-emitting device and the other of its pair of current terminals connected to a power source. The holding capacitance is connected between the control and current terminals of the drive transistor. | 04-02-2009 |
20090096721 | PIXEL CIRCUIT - A pixel circuit has a light emitting diode, a driving transistor, a capacitor, a first switch, a second switch, a third switch, and a forth switch. The driving transistor has a drain, coupled to a second end of the light emitting diode. The capacitor is coupled between a gate of the driving transistor and the ground terminal. The third switch is coupled between the source and the gate of the driving transistor. The fourth switch is coupled between the second end of the light emitting diode and a data line. The first switch is off, the second is on, and the third is on during the reset period; the first switch is off, the second is off, and the third is on during the programming period; and the first switch is on, the second is on, and the third is off during the display period. | 04-16-2009 |
20090096722 | ELECTROPHORETIC DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING ELECTROPHORETIC DISPLAY DEVICE - An electrophoretic display device includes a common electrode and a plurality of pixel electrodes, and a disperse system containing electrophoretic particles, that is held between the common electrode and the plurality of pixel electrodes,. The electrophoretic display device includes a switching transistor and a control portion. The switching transistor supplies a corresponding one of the pixel electrodes with a low electric potential signal or a high electric potential signal supplied from a signal line. The control portion controls electric potential signals supplied to the pixel electrode and the common electrode to cause the electrophoretic particles to move. The switching transistor enters an on state when a gate electrode of the switching transistor is supplied with a first electric potential, and enters an off state when the gate electrode is supplied with a second electric potential. The control portion is provided with a first period during which control for causing the electrophoretic particles to move is performed and a second period during which, after the first period, the switching transistor is made to enter an off state. During the second period, when the first electric potential is smaller than the second electric potential, the control portion supplies a low electric potential signal from the signal line to the switching transistor and supplies a low electric potential signal to the common electrode, and when the first electric potential is larger than the second electric potential, the control portion supplies a high electric potential signal from the signal line to the switching transistor and supplies a high electric potential signal to the common electrode. | 04-16-2009 |
20090102757 | APPARATUS AND METHOD TO COMPENSATE A DRIVING CURRENT OF A LIGHT EMITTING DIODE - The present invention discloses a method for driving a light emitting diode according to a required luminance, wherein an actual luminance of the light emitting diode decays with time and a correlation there between is represented by a life-time curve. The method comprises the following steps. First, the driving current is correlated with the required luminance by an initial coefficient is provided to the light emitting diode. Next, a length of a period of use of the light emitting diode is counted. Then, a slope of the life-time curve corresponding to the required luminance is stored. Finally, a new coefficient from the length of the period of use, the slope of the life-time curve and the initial coefficient is derived. | 04-23-2009 |
20090102758 | ELECTRO-OPTICAL DEVICE - An electro-optical device includes first and second signal lines that extend in directions for intersecting each other on a component substrate, a pixel area in which a pixel electrode is disposed in correspondence with an intersection of the first and second signal lines, a signal output circuit that is disposed outside the pixel area and outputs a driving signal to the first signal line, and a connection wiring that connects the signal output circuit and the first signal line together. An outer peripheral edge of the pixel area has a curved portion or a bent portion in a portion facing the signal output circuit, and the signal output circuit includes a plurality of circuit blocks, and the circuit blocks are arranged along the curved portion or the bent portion of the portion facing the signal output circuit with deviated between adjacent circuit blocks in the direction of extension of the first signal line and/or the direction of extension of the second signal line. | 04-23-2009 |
20090102759 | PIXEL DRIVE CIRCUIT FOR ORGANIC EL DISPLAY - A pixel circuit includes an organic EL element includes a storage capacitor charged with a data voltage; a first driving transistor responsive to charged voltage of the storage capacitor to supply drive current to the organic EL element; and a second driving transistor connected the storage capacitor and a predetermined power supply responsive to potential corresponding to a voltage drop in the organic EL element, and supplies charge current to the storage capacitor, circuitry for causing the second driving transistor to supply charge current to the storage capacitor from a time when the storage capacitor is charged with data voltage and the drive current from first driving transistor flows through the organic EL element. When drive current from the first driving transistor is stopped by changes in the charged voltage of storage capacitor, the drive current supplied to the organic EL element for a period corresponding to the data voltage. | 04-23-2009 |
20090102760 | Display device and electronic apparatus have the same - A display device includes a pixel array portion in which sub-pixels each including an electro-optic element, a write transistor for writing a video signal, a hold capacitor for holding the video signal written by the write transistor, and a drive transistor for driving the electro-optic element in accordance with the video signal held in the hold capacitor are disposed in a matrix, and each unit pixel is composed of the plurality of adjacent sub-pixels belonging to a plurality of rows. The display device further includes power source supply lines through which power source potentials different in potential from one another are selectively supplied to the drive transistors. One power source supply line is wired every plural rows. | 04-23-2009 |
20090102761 | Image display device - The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel. | 04-23-2009 |
20090109142 | EL DISPLAY DEVICE - A switch being turned off using an output open function of a power supply circuit, a cathode voltage Vss is not transmitted, an output terminal takes on a high impedance condition and, a probing being done into a pad of the cathode voltage Vss output terminal with a probe, an ammeter which measures a current is disposed between the probe | 04-30-2009 |
20090109143 | EL Display Device and A Method of Manufacturing the Same - To provide a high throughput film deposition means for film depositing an organic EL material made of polymer accurately and without any positional shift. A pixel portion is divided into a plurality of pixel rows by a bank, and a head portion of a thin film deposition apparatus is scanned along a pixel row to thereby simultaneously apply a red light emitting layer application liquid, a green light emitting layer application liquid, and a blue light emitting layer application liquid in stripe shapes. Heat treatment is then performed to thereby form light emitting layers luminescing each of the colors red, green, and blue. | 04-30-2009 |
20090109144 | CIRCUIT DEVICE AND ACTIVE-MATRIX DISPLAY APPARATUS - A circuit device includes a first circuit including a thin-film transistor and a second circuit including another thin-film transistor. The second circuit is controlled by control signals including a first control signal and a second control signal delayed from the first control signal. The second control signal is generated on the basis of the first control signal which has been propagated through the second circuit. | 04-30-2009 |
20090109145 | IMAGE DISPLAY DEVICE AND CONTROL METHOD THEREOF - When not receiving the next display-switch starting signal even after a specified time elapses from the application of a previous display driving voltage, a driving unit applies another preparatory driving voltage for generating a preparatory electric field capable of improving the response of colored particles to a driving electric field to an extent so as not to change the arrangement of the colored particles between pixel electrodes and a transparent electrode for a preparatory driving time. | 04-30-2009 |
20090109146 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including: a pixel array section having a plurality of pixels each including an electro-optical element, a writing transistor, a driving transistor, and a holding capacitor; a power supply scanning circuit; and a signal outputting circuit; wherein the power supply scanning circuit is operable to supply a second power supply potential to initialize the potential of a second electrode of the driving transistor and then change over the potential of a power supply line to a first power supply potential; and the signal outputting circuit is operable to output, when the writing transistor is in a conducting state, a first reference potential, supply, midway while a threshold value correction process is carried out, a second reference potential, output a third reference potential within a period within which the writing transistor remains in the conducting state, and output a image signal after the threshold correction process ends. | 04-30-2009 |
20090109147 | Organic light emitting display and power supply method thereof - An organic light emitting display and power supply method thereof operate an organic light emitting display panel using a high voltage EVLDD and a low voltage ELVSS supplied from a driver integrated circuit during a low power display mode. The organic light emitting display a first power supply configured to supply a first power including a first high voltage and a first low voltage, a second power supply configured to supply a second power including a second high voltage and a second low voltage, and an organic light emitting display panel configured to receive the first power from the first power supply in a standard display mode and configured to receive the second power from the second power supply in a low power display mode. | 04-30-2009 |
20090109148 | Organic electro-luminescent display device - A high-definition organic EL display device which enhances utilization efficiency of a space within a pixel is provided. In an organic EL display device in which pixels each of which is constituted of an organic El element are arranged in a matrix array, the pixel includes a pixel circuit which is configured to control an electric current supplied to the organic El element, the pixel circuit includes a capacitance, and the capacitance is arranged on a boundary of the pixels arranged adjacent to each other in a longitudinal direction of the pixels. Further, one electrode which constitutes the capacitance is used in common by the pixels arranged adjacent to each other in the longitudinal direction, and another electrode which constitutes the capacitance is separated between the pixels arranged adjacent to each other in the longitudinal direction. | 04-30-2009 |
20090109149 | Image display device - An image display device having a plurality of pixel, a plurality of signal lines for inputting an image voltage to each of the plurality of pixels, and a pixel selecting unit for selecting from the plurality of pixels a pixel into which the image voltage is to be written, in which each of the pixels has a light emitting device of a current driving-type, a driving transistor connected between a power line and the light emitting device, and a capacitance device having one end connected to a gate electrode of the driving transistor, the image voltage is input to the other end of the capacitance device during the writing period, an inclined wave voltage which changes a voltage level thereof according to time is input to the other end of the capacitance device during a light emission period following the writing period. | 04-30-2009 |
20090115703 | LED DISPLAY WITH CONTROL CIRCUIT - An active-matrix circuit for controlling an LED display pixel that includes a control circuit responsive to control signals for storing a luminance value in a storage circuit during a frame period. A drive circuit responds to the storage circuit for controlling current through an LED to emit light at a luminance level determined by the luminance value. A luminance-value reduction circuit, connected to the storage circuit, provides a controlled reduction of the luminance value stored in the storage circuit during the frame period. | 05-07-2009 |
20090115704 | PIXEL CIRCUIT FOR AN ACTIVE MATRIX ORGANIC LIGHT-EMITTING DIODE DISPLAY - A pixel circuit for an OLED element comprises first, second, third and fourth transistors wherein controllable conduction paths of the first and second transistors are connected for receiving a data signal current, and the control electrodes thereof are connected for receiving a select signal for being enabled thereby. The third and/or fourth transistors are connected for establishing a current in the OLED element responsive to the data signal current and the select signal. Capacitance may be provided by at least one of the transistors or by additional capacitance. | 05-07-2009 |
20090115705 | ELECTRO-LUMINESCENT DISPLAY DEVICE - An electro-luminescent display includes a first array of light-emitting elements. Each of these light-emitting elements has an optical element. A second array of light-emitting elements also includes a second optical element different from the first. One or more row lines are electrically connected to either light-emitting elements in the first array of light-emitting elements or light-emitting elements in the second array of light-emitting elements. One or more column lines provide a data signal to the first and second array of light-emitting elements. A driver circuit delivers common information to the light-emitting elements in both the first and second arrays in response to a select signal for activating light-emitting elements in the first or second arrays. | 05-07-2009 |
20090115706 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting device including a first pixel, a second pixel and a third pixel displaying different colors from each other according to the present invention, the organic light emitting device includes a reflecting electrode and a translucent member forming a micro-cavity along with the reflecting electrode, wherein a optical path length is an interval between the reflecting electrode and the translucent member, and wherein the light path lengths of at least two pixels among the first pixel, the second pixel and the third pixel are the same. | 05-07-2009 |
20090115707 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THEREOF - An organic light-emitting display device and a method of driving the display device are disclosed. A pixel circuit used in the organic light-emitting display device includes a first switching transistor, a second switching transistor and a driving transistor. The first switching transistor switches a data voltage in response to a first control signal. The second switching transistor switches a compensation voltage in response to a second control signal. The driving transistor provides an electric current to an organic light-emitting device in response to the data voltage and the compensation voltage. | 05-07-2009 |
20090115708 | ACTIVE MATRIX DISPLAY DEVICE - An active matrix display device includes a driving section provided on a substrate, an insulating film stacked on the substrate, and light-emitting elements arranged in a matrix on the insulating film, and each of the light-emitting elements includes an light-emitting layer between its upper and lower electrodes, the active matrix display device being driven by the driving section provided for each of the light-emitting elements, the active matrix display device also including a first wiring required to cause the light-emitting element to emit light, and a second wiring disposed in the underlying layer of the first wiring via the insulating film, the second wiring also required to cause the light-emitting element to emit light, wherein the first or second wiring is branched into a plurality of wirings at the intersection between the two wirings. | 05-07-2009 |
20090115709 | Display apparatus, display-apparatus driving method and electronic instrument - Disclosed herein is a display apparatus including: a pixel array section including pixel circuits each having an electro optical device, a signal writing transistor, a signal storage capacitor, and a device driving transistor; and a pixel driving section, wherein: in a no-light emission period, the pixel driving section carries out a threshold-voltage correction process by changing an electric potential appearing on an electrode of the device driving transistor close to the electro optical device toward an electric potential obtained by subtracting the threshold voltage of the device driving transistor from the initialization electric potential of the gate electrode of the device driving transistor and a mobility correction process of negatively feeding a current flowing through the device driving transistor back to the gate electrode of the device driving transistor; and when a current is not flowing through the device driving transistor, the pixel driving section applies a positive bias voltage to the gate electrode of the signal writing transistor. | 05-07-2009 |
20090121980 | DISPLAY APPARATUS AND INFORMATION PROCESSING APPARATUS USING THE SAME - A display apparatus has a plurality of column-current generating circuits for supplying signal currents respectively to the corresponding columns of a plurality of EL devices that are arranged two-dimensionally. Each of the column-current generating circuits includes two or more transistor devices the gates, sources and drains of which are respectively connected in parallel so as to function as a single transistor. The transistor devices are arranged at a pitch equal to or n-times of the alignment period in the row direction of the EL devices and at a constant pitch equal to the alignment period in the column direction of the EL devices. | 05-14-2009 |
20090121981 | Organic light emitting display device and driving method using the same - An organic light emitting display device is disclosed. The pixels of the display emit light which is independent of the threshold voltage of the drive transistor for the pixel. The pixel is reset before each time new data is written thereto, and the luminance data stored in the pixel includes the threshold voltage of the drive transistor. | 05-14-2009 |
20090121982 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting device according to one or more embodiments includes a gate line, a data line intersecting the gate line, a switching thin film transistor connected to the gate line and the data line, a driving thin film transistor connected to the switching thin film transistor, and a light emitting diode (LED) connected to the driving thin film transistor. The switching thin film transistor includes a control electrode connected to the gate line, a crystalline semiconductor overlapping the control electrode, and an input electrode and an output electrode are spaced apart from each other on the crystalline semiconductor, wherein the control electrode and the gate line are respectively disposed under and on the crystalline semiconductor and include different materials. | 05-14-2009 |
20090121983 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting device according to an exemplary embodiment of the present invention includes a plurality of first, second, and third pixels for displaying different colors, wherein the plurality of first and second pixels are alternately arranged in a first column, the plurality of third pixels are continuously arranged in a second column, and an interval between the third pixels is larger than an interval between the first pixel and the second pixel. | 05-14-2009 |
20090121984 | Electroluminescent display panel and electronic device - An EL display panel including: a pixel array section in which EL display elements whose light emission state is controlled by an active matrix driving system are arranged in a form of a matrix; a first writing control line driving section and a second writing control line driving section configured to drive each writing control line from both sides of the pixel array section; and a first power supply line driving section and a second power supply line driving section configured to drive a power supply line disposed along a direction of a horizontal line from both sides of the pixel array section, the first power supply line driving section and the second power supply line driving section being respectively arranged between the first writing control line driving section and the pixel array section and between the second writing control line driving section and the pixel array section. | 05-14-2009 |
20090128457 | ORGANIC ELECTROLUMINESCENT DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME - The present invention provides an organic electroluminescent display panel that is resistant to deterioration by outgas and to light emission problems attributable to mask contact, and a method for manufacturing this panel. The organic electroluminescent display panel includes a substrate, a first display electrode formed on the main face of the substrate and having one or more pixel light-emitting regions, an organic functional layer that is formed on the first display electrode and includes at least one organic material layer, a mask spacer provided near the organic functional layer, and a second display electrode formed on the organic functional layer. The mask spacer is made of the same material as any one of the organic material layers and has a top face located higher than the position of the second display electrode, when measured from the main face of the substrate. | 05-21-2009 |
20090128458 | ORGANIC LIGHT EMITTING DIODE DISPLAY - Disclosed is an organic light emitting device which includes a first pixel displaying red, a second pixel displaying green, a third pixel displaying blue, and a fourth pixel displaying blue and forming a dot along with the first pixel, the second pixel, and the third pixel. The first to fourth pixels include a switching element and an organic light emitting element connected to the switching element, and the sum of the areas of the first to fourth pixels is substantially the same as the area of the dot. | 05-21-2009 |
20090135102 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device includes a substrate having a plurality of pixels, with each pixel comprising a plurality of sub-pixels. Each sub-pixel includes an emission area, the emission area including a first electrode, a second electrode and an emitting layer. Scan, data, and power supply lines are provided to supply scan, data, and power signals to one or more corresponding sub-pixels. Additionally, a ratio of a distance between adjacent sub-pixels to a width of the power supply line lies in a predetermined range. | 05-28-2009 |
20090135103 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device includes a substrate having a plurality of pixels, with each pixel comprising a plurality of sub-pixels. Each sub-pixel includes an emission area that contains a first electrode, a second electrode, and an emitting layer. The emitting layer of at least one sub-pixel includes a phosphorescence material. In addition to these features, the device includes a scan line to provide a scan signal to a corresponding sub-pixel, a data line to supply data signal to a corresponding sub-pixel, and a power supply line configured to provide power to a corresponding sub-pixel. The resistance of the data line is lower than a resistance of the scan line. | 05-28-2009 |
20090135104 | Organic light emitting device - An organic light emitting device includes a substrate having a plurality of pixels, each pixel comprising a plurality of sub-pixels. Each sub-pixel includes an emission area that has a first electrode, a second electrode and an emitting layer, with the emitting layer of at least one sub-pixel includes a phosphorescence material. In addition to these features, the device includes a scan line to provide scan signal to a corresponding sub-pixel, a data line configured to supply data signal to a corresponding sub-pixel, and a power supply line to provide power to a corresponding sub-pixel. The data line and power supply line have a single-layer structure, and a taper angle of each of the data line and the power supply line lies in a predetermined range. | 05-28-2009 |
20090135105 | LIGHT-EMITTING ELEMENT AND DISPLAY APPARATUS USING THE SAME - A light-emitting element comprises an auxiliary electrode provided on a substrate; an insulating layer provided on the auxiliary electrode; a first electrode supported by the insulating layer; a carrier injection layer made of an organic conductive material having carrier injecting property, and making contact with the first electrode; a light emission layer supported by the carrier injection layer; and a second electrode supported by the light emission layer, and a carrier dispersion layer having lower resistance than the carrier injection layer is provided between the carrier injection layer and the light emission layer. With this arrangement, a light-emitting element having good light emission characteristics in-a pixel is provided. | 05-28-2009 |
20090135106 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD FOR THE SAME - An organic light emitting display and a driving method for the same for preventing picture playback disruption during the playback of a moving picture. An organic light emitting display includes: a display region including a plurality of pixels for displaying an image; a frame memory for storing image signals of the image; a data driver for receiving the image signals to generate data signals; a scan driver for generating scan signals; and a controller for controlling the frame memory to store the image signals and to transfer the image signals stored in the frame memory to the data driver. The controller controls the frame memory to store the image signals for at least two horizontal synchronization periods before they are transferred to the data driver. | 05-28-2009 |
20090135107 | Organic light emitting display - A pixel circuit for an organic light emitting display is disclosed. The pixel uses both current and voltage driving methods. A voltage based on an input current and on an input voltage is stored, and current for an organic light emitting diode is generated based on the stored current. | 05-28-2009 |
20090135108 | Sample-and-Hold Display with Impulse Backlight - An apparatus includes a sample-and-hold display with a plurality of transmissive aperture holes, and an electroluminescent backlight source with a plurality of delimited emissive areas. A dedicated delimited emissive area is associated to each transmissive aperture hole of the sample-and-hold display. A display control component updates the sample-and-hold display with a predetermined refresh rate. A backlight control component activates different portions of the electroluminescent backlight source sequentially, each portion comprising a plurality of the emissive areas. | 05-28-2009 |
20090135109 | ORGANIC EL ELEMENT, ORGANIC EL DISPLAY DEVICE, AND METHODS OF MANUFACTURING THE SAME - In an organic EL element having a transparent conductive electrode and a cathode opposed to the transparent conductive electrode, the cathode includes a film of a rare earth element that can be sputtered. The film of the rare earth element having a low work function, for example, a LaB | 05-28-2009 |
20090135110 | DISPLAY APPARATUS AND INTEGRATED CIRCUIT - A display apparatus includes: an image display unit including plural electro-optic elements and plural pixel drive circuits, which elements and circuits being arranged two-dimensionally in row and column directions; a first power supplying line for supplying first potential to the image display unit; plural data lines severally connected to columns of the image display unit for supplying data signals to the pixel circuits; plural scanning lines crossing the data lines; a data line drive circuit for driving the data lines; and a scanning line drive circuit for driving the scanning lines, wherein second potential is supplied to the scanning line drive circuit through a second power supplying line and the display apparatus is provided with elements severally for shifting potential of the scanning lines to first potential of the first electric power supplying line when the second potential is lower than the first potential. | 05-28-2009 |
20090135111 | Display apparatus - Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixel circuits disposed in a matrix and each including a driving transistor for producing driving current, a storage capacitor for storing information of a image signal amplitude, an electro-optical element connected to an output terminal side of the driving transistor, and a sampling transistor for writing information of the signal amplitude into the storage capacitor, the driving transistor being operable to produce driving current based on the information stored in the storage capacitor and supply the driving current to the electro-optical element to cause the electro-optical element to emit light; a driving signal fixing circuit for keeping the driving current fixed; and a light blocking layer provided on the light input side of a transistor which participates in the driving signal fixing function and for preventing appearance of leak current of the transistors arising from light irradiation. | 05-28-2009 |
20090135112 | Display apparatus and fabrication method and fabrication apparatus for the same - A display apparatus includes: a pixel array section including a plurality of pixel circuits disposed in rows and columns and each including a driving transistor configured to produce driving current, a storage capacitor configured to store information in accordance with a signal amplitude of an image signal, an electro-optical element connected to an output terminal of the driving transistor, and a sampling transistor configured to write information in accordance with the signal amplitude into the storage capacitor, the driving transistor being operable to produce driving current based on the information stored in the storage capacitor and supply the driving current to the electro-optical element to cause the electro-optical element to emit light. The pixel circuit includes a pixel divided into a plurality of divisional pixels each of which independently includes the electro-optical element, the storage capacitor and the driving transistor. | 05-28-2009 |
20090135113 | Electro luminescent display panel and electronic apparatus - An EL display panel having a pixel structure corresponding to an active-matrix drive system, the EL display panel including a current supply line configured to be connected to a plurality of pixel circuits in common, line width of an intersection part of the current supply line with a signal line being smaller than line width of the other part of the current supply line. | 05-28-2009 |
20090140955 | LIGHT-EMITTING ELEMENT AND DISPLAY DEVICE - A light-emitting element that comprises a light emission layer that is deposited between first and second electrodes that lie opposite one another in parallel, an organic semiconductor layer that is deposited between the light emission layer and the first electrode, and an auxiliary electrode that is disposed via an insulation layer on the opposite side of the face of the first electrode opposite the second electrode, the light-emitting element further comprising a third electrode that is disposed inside the organic semiconductor layer. | 06-04-2009 |
20090140956 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display and a driving method thereof capable of reducing power consumption. A driving transistor controls a current through an organic light emitting diode of the display. A voltage controller supplies a first voltage to the anode of the OLED of at least one specific pixel and controls the cathode voltage of the OLED in correspondence to a second current through the OLED, such that the cathode voltage corresponds to the first voltage supplied to the OLED. Thus, the driving transistor can be driven in saturation mode with consistent current in spite of process variations, with a reduced power consumption. | 06-04-2009 |
20090140957 | Pixel and organic light emitting display using the same - A pixel circuit with stable lamination is disclosed. A leakage current which would otherwise cause the voltage at the gate of the drive transistor to change, resulting in a change in the current to the OLED, is compensated for by an additional transistor. | 06-04-2009 |
20090140958 | INFORMATION PROCESSING APPARATUS - An information processing apparatus includes a main display composed of an organic electronic luminescent including a light emitting layer and configured to display at least one instruction information in a first display area of a standby screen, and a control unit configured to perform such a control that an illumination time taken for transiting a lighting state of the main display from a first state to a second state is set, whether the illumination time elapses after the lighting state is set in the first state is determined, and when determined that the illumination time elapses after the lighting state is set in the first state, the lighting state is set from the first state to the second state, and in synchronism with this transition to the second state, the display of the instruction information displayed in the first display area on the main display is deleted. | 06-04-2009 |
20090140959 | Driving apparatus for organic electro-luminescence display device - Disclosed is an apparatus that prevents a degradation of image quality due to a deterioration of a driving apparatus in an organic electro-luminescence display device. | 06-04-2009 |
20090146926 | DRIVING APPARATUS AND DRIVING METHOD FOR AN ORGANIC LIGHT EMITTING DEVICE - A driving apparatus for an organic light emitting device including pixels with light-emitting devices and a method of making such apparatus are presented. The uniform values based on voltages for each frame corresponding to grays of input image signals are calculated and summed, and data voltages are increased when the sum exceeds a predetermined value. The apparatus helps maintain the desired brightness in an organic light emitting diode (OLED) display device through the lifespan of the device. | 06-11-2009 |
20090146927 | METHOD FOR MANUFACTURING THIN FILM TRANSISTOR (TFT) AND OLED DISPLAY HAVING TFTS MANUFACTURED BY THE SAME - An organic light emitting diode (OLED) display and thin film transistor (TFT) manufacturing method thereof are disclosed. According to the present invention, poly-silicon layers for forming active areas of non-driving TFT (e.g. peripheral circuit TFT and switch TFT) and driving TFT used in the OLED display are respectively made by using standard laser crystallization method and non-laser crystallization method or low energy laser crystallization method. Therefore, the peripheral circuit TFT has excellent electrical performance such as high carrier mobility, while the OLED-driving TFT has good stability so that the resultant display can operate with improved luminance uniformity. | 06-11-2009 |
20090146928 | Organic Electroluminescence Display Device - Before a reset operation in which a threshold voltage Vth of an organic light emitting diode (OLED) driving thin film transistor (TFT) is compensated is performed by a first reset TFT switch, a second reset TFT switch is turned on to apply a reset reference potential to a gate of the OLED driving TFT. Accordingly, an operation point of the OLED driving TFT can be stably set even when a power supply is low. In the reset operation, it is unnecessary to close a lighting TFT switch and cause an OLED element to emit light, whereby constant can be improved. | 06-11-2009 |
20090153445 | Capacitive coupling-type transmitting and receiving circuits for information signal - A capacitive coupling-type transmitting and receiving circuit for information signal is provided in which attenuation of a signal on a non-contact transmission path via a capacitor and a change of voltage on the receiving side due to a slight change in capacitance are suppressed, modulation and demodulation processes of signals are unnecessary, and non-contact transmission which does not depend on the transmission rate is enabled. The capacitor is formed with a transmitting electrode on a transmission board and a receiving electrode on a display panel board, and an insulating member is interposed between the electrodes. The transmitting board comprises a transmission signal processing circuit which converts display data from an external signal source into a voltage signal. The display panel board comprises an impedance converter circuit and a reception signal processing circuit. | 06-18-2009 |
20090153446 | DRIVING CIRCUIT FOR DISPLAY DEVICE, AND DISPLAY DEVICE - A driving circuit of display device includes digital/current converting (DCC) circuits one for each data line. The DCC circuit operates to charge a capacitor with a reference current according to a supplied signal from a shift register. The DCC circuit stores a current value of the reference current and outputs it to a data line via a switching element that has been turned on by a digital image data signal (H) of a single line supplied from a line latch. The output value of each DCC circuit is reset one after another in every select scan period in which an OFF signal is sent to all the data lines. In this way, the reset of the output value and the output of the image data signal can be successively carried out within one frame period, enabling the data to be applied to the pixel circuit with the DCC circuits provided one for each data line. This simplifies the driving circuit that drives the pixel circuits provided with an electro-optic element and disposed in a matrix. | 06-18-2009 |
20090160740 | ELECTROLUMINESCENT DISPLAY COMPENSATED ANALOG TRANSISTOR DRIVE SIGNAL - Apparatus for providing an analog drive transistor control signal to the gate electrode of a drive transistor in a drive circuit that applies current to an EL device, the drive circuit including a first supply electrode of the drive transistor and the EL device connected to a second supply electrode of the drive transistor, comprising a measuring circuit for measuring the current passing through the supply electrodes at different times to provide an aging signal representing variations in the characteristics of the drive transistor and EL device caused by operation of the drive transistor and EL device over time; a compensator for changing a linear code value in response to the aging signal to compensate for the variations in the characteristics of the drive transistor and EL device; and a linear source driver for producing the analog drive transistor control signal in response to the changed linear code value. | 06-25-2009 |
20090160741 | ELECTRO-OPTIC DEVICE, AND TFT SUBSTRATE FOR CURRENT CONTROL AND METHOD FOR MANUFACTURING THE SAME - To provide an electro-optic apparatus which can directly control alternating current, output significantly high-frequency alternating current, stably output a large amount of power, and reduce manufacturing cost, as well as a TFT substrate for current control and the method for producing the same. | 06-25-2009 |
20090167644 | RESETTING DRIVE TRANSISTORS IN ELECTRONIC DISPLAYS - A method for resetting drive transistors associated with subpixels in an electroluminescent display, comprising providing an electroluminescent display having a plurality of subpixels, each subpixel including an electroluminescent device and a drive circuit having a drive transistor for providing current through its associated electroluminescent device; providing a separate aging signal for each subpixel during operation of the electroluminescent display after a predetermined operating time period by responding as a function of the current passing through each of the subpixels or as a function of a voltage associated with each drive circuit; comparing each of the separate aging signals with a corresponding threshold level to produce a separate staleness signal for each subpixel representing whether or not the associated drive transistor should be reset; and resetting the associated drive transistors in response to staleness signals that indicate such drive transistors should be reset. | 07-02-2009 |
20090167645 | EL Display Device - A power source line | 07-02-2009 |
20090167646 | Display device and electronic device - The present invention provides a display device includes: a pixel array section including a set of pixels arranged in a form of a matrix; and a driving section for driving the pixel array section. | 07-02-2009 |
20090167647 | Display device and electronic apparatus - Disclosed herein is a display device including a pixel array part configured to include scan lines disposed along rows, signal lines disposed along columns, and pixels that are disposed at intersections of the scan lines and the signal lines and arranged in a matrix, each of the pixels having at least a sampling transistor, a drive transistor, a switching transistor, a hold capacitor, and a light-emitting element; and a drive part configured to include a scanner and a driver, the driver supplying a video signal to the signal lines along the columns. | 07-02-2009 |
20090167648 | Luminescence display and driving method thereof - A OLED display and a driving method thereof are disclosed. The OLED display includes: an OLED display panel including: data lines to which data voltages are supplied; gate lines to which a gate voltage is sequentially supplied; luminescence control lines to which a luminescence control voltage is sequentially supplied, a driving power line to which a driving voltage is supplied; a compensation power line to which a compensation voltage having a first level and a second level different from the first level are supplied; a plurality of pixel cells each respectively in pixel areas defined by the data lines and the gate lines; a data driver having output lines whose number is smaller than the number of the data lines; and a demultiplexer unit formed between the data driver and the OLED display panel, the demultiplexer unit supplying the data voltages from the output lines to the data lines, wherein each of the pixel cells includes: a light emitting element; and a pixel driver that supplies a current corresponding to a corresponding one of the data voltages to the light emitting element based on the corresponding data voltage, the gate voltage, the luminescence control voltage, the driving voltage and the compensation voltage having the first level and that turns off the light emitting element when the compensation voltage has the second level. | 07-02-2009 |
20090174628 | OLED display, information device, and method for displaying an image in OLED display - An OLED display including a display panel, a memory, and a processing circuit is provided. The display panel includes a plurality of sub-pixels. The memory stores a compensation table. The processing circuit includes a current sensor, and a processor. The current sensor sense a current of at least one sub-pixel among said plurality of sub-pixels, and the compensation table is updated according to the sensed current. The processor receives image data and generates compensated image data based on the image data and the updated compensation table. Then the display panel displays said compensated image data. | 07-09-2009 |
20090174629 | Organic Light Emitting Display Device and driving method thereof - A circuit and process capable of smoothly switching between screens of an organic light emitting display by switching an image of a pixel unit that includes a matrix of pixels into a black image by sequentially reducing the voltage of a first power supply at least two times to display the black image as the screen of the pixel unit transitions to the black image. | 07-09-2009 |
20090174630 | Organic light emitting display (OLED) devise, modules, and electronic devices - An organic light emitting display device is disclosed, which including an active matrix substrate with an array of active elements disposed in an active region and a control circuit disposed in a peripheral region. A color filter substrate is oppositely disposed to the active matrix substrate, including color filter elements with different colors enclosed by a black matrix layer in a region corresponding to the active region and an extension of the black matrix layer in a region corresponding to the peripheral region. An array of OLED pixel is interposed between the active matrix substrate and the color filter substrate on the active region. Each of the OLED pixels includes an anode, an organic electroluminescent layer, and a cathode. A first conductive component electrically connects the control circuit and the extension of the black matrix layer. A second conductive component electrically connects the black matrix layer and the cathode. | 07-09-2009 |
20090179831 | Display Device - Any one of a write scanning line, a power source supply line, and a video signal line is structured as a subsidiary wiring disposed in the same layer as that having a lower electrode disposed therein. The subsidiary wiring is used in the power source supply line through which a power source drive pulse to be pulse-driven is transmitted, or other wirings (such as the write scanning line and the video signal line). | 07-16-2009 |
20090179832 | Organic electroluminescence display device - An organic electroluminescence display device is provided having a display section including a plurality of pixels arranged in a matrix; and a detection section for detecting a luminance characteristic of an OLED element in each of the pixels. The detection section includes a first path for allowing a detected characteristic value to pass therethrough and a second path for attenuating the detected characteristic value. A first switch is provided for the first path whereas a second switch is provided for the second path, the second switch being opened when the first switch is closed. The detected characteristic value having passed through any one of the first path and the second path is input to a same analog-to-digital converter to be converted into a digital quantity. | 07-16-2009 |
20090179833 | DISPLAY DEVICE AND ELECTRONIC APPLIANCE - A display device having a light emission time necessary for performing impulse-type display which is suitable for motion image display comprises a resistor element including a first terminal and a second terminal, a transistor including a gate terminal which is electrically connected to a signal line, and a source terminal and a drain terminal, one of which is electrically connected to a power supply line, a capacitor element including a first terminal and a second terminal, one of which is electrically connected to one of the first terminal and the second terminal of the resistor element and the other of the source terminal and the drain terminal of the transistor, a light-emitting element including a first terminal and a second terminal, one of which is electrically connected the other of the first terminal and the second terminal of the resistor element. | 07-16-2009 |
20090179834 | PROCESSING METHOD OF FLAT PANEL DISPLAY APPARATUS - A processing method of a flat panel display apparatus in which a cathode panel having electron emitting regions and an anode panel having phosphor regions and an anode electrode are joined is provided. A predetermined voltage is applied to each electron emitting region, thereby allowing electrons to be emitted therefrom. In a predetermined row, initial electron emitting states in the electron emitting regions are measured. After that, a voltage higher than that of the electron emitting region in a row showing the low initial electron emitting state is applied to the electron emitting region in the row showing the high initial electron emitting state for a predetermined time, thereby performing aging. | 07-16-2009 |
20090179835 | ELECTRO-OPTICAL DEVICE, DRIVING METHOD OF ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS - An electro-optical device includes a pixel column, a first and second data lines, and a first and second output circuits. The pixel column including pixel portions are arranged in a first direction. The first and second data lines extend in the first direction. The first and second output circuits output data voltages to different pixel portions of the pixel column through the first and second data lines, respectively. | 07-16-2009 |
20090184896 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - There is provided an organic light emitting display capable of compensating for the deterioration of organic light emitting diodes (OLED) while sharing an analog-to-digital converter (ADC). The organic light emitting display includes sub pixels positioned in the intersections between scan lines and data lines, a current source unit for supplying predetermined current to organic light emitting diodes (OLED) in a sensing period for grasping deterioration information on the OLEDs included in the sub pixels, at least one analog-to-digital converter (ADC) provided fewer than data lines in order to convert a voltage applied to the OLEDs into a digital signal, and a switching unit for coupling the data lines to the current source unit in the sensing period and for sequentially coupling at least one ADC to the data lines in the sensing period. | 07-23-2009 |
20090184897 | ELECTROPHORETIC DISPLAY PANEL DRIVING METHOD AND ELECTROPHORETIC DISPLAY PANEL - An electrophoretic display panel includes an element substrate, a counter substrate, and an electrophoretic display layer interposed between the element substrate and the counter substrate. The element substrate includes a first data line set including plural data lines, second data line sets each including plural data lines branched from each of the plural data lines of the first data line set, plural scanning lines, and plural pixel electrodes. The plural pixel electrodes are disposed at locations where the plural data lines of the second data line sets intersect with the plural scanning lines. The counter substrate includes plural common electrodes, and one or more common electrodes is disposed opposite the plural pixel electrodes corresponding to one of the second data line sets. | 07-23-2009 |
20090184898 | Electroluminescent display panel and electronic apparatus - An electroluminescent display panel has pixel circuits for the active matrix driving system. Each pixel circuit has a thin-film transistor in which a portion of a pattern of a metal wiring material above the channel layer of the thin-film transistor is so laid out as to shield the channel region of the thin-film transistor. | 07-23-2009 |
20090184899 | Organic light emitting display device - An organic light emitting display capable of minimizing the voltage drop of pixel power sources supplied to an organic light emitting display panel, contemplates an organic light emitting display panel including a pixel unit on which an image is displayed, and a plurality of first and second power source pads provided at two or more edges outside the pixel unit in order to receive first and second pixel power sources in at least two different directions, a plurality of tape carrier packages (TCP) electrically coupled to the organic light emitting display panel and including driving ICs for driving the organic light emitting display panel and power source lines for transmitting the first and second pixel power sources to the first and second power source pads, and driving boards electrically coupled to the TCPs in order to supply control signals for controlling the driving ICs and the first and second pixel power sources to the TCPs. | 07-23-2009 |
20090195483 | USING STANDARD CURRENT CURVES TO CORRECT NON-UNIFORMITY IN ACTIVE MATRIX EMISSIVE DISPLAYS - A plurality of gray level versus OLED current curves are generated by measuring many OLED panels from a stable manufacturing process, and those curves are stored as standard gray level versus OLED current curves. When a new OLED display is manufactured from the process, each of its sub-pixels is characterized as having the characteristics of one of the pre-generated standard gray level versus OLED current curves, based on a gray level versus OLED current measurement at a single gray level. This drastically reduces the time it takes to determine the TFT gate voltage versus OLED current characteristics of the sub-pixels in the OLED display. The OLED display can use the selected one of the pre-generated standard gray level versus OLED current curves to correct non-uniformities of the sub-pixels in the OLED display caused by non-uniform TFTs in the active matrix. | 08-06-2009 |
20090195484 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display and a driving method thereof. The organic light emitting display includes a display unit for emitting light in response to a current flowing through the display unit from a first power supply to a second power supply. The current corresponds to a data signal and a scan signal. According to one embodiment, the organic light emitting display further includes a power supply unit having a first output terminal for outputting a first power of the first power supply and a second output terminal for outputting a second power of the second power supply to the display unit, and a driving voltage calculation unit for determining a voltage of the second power corresponding to the current, thereby the power consumption of the organic light emitting display may be reduced. | 08-06-2009 |
20090195485 | Organic light emitting diode display - An OLED display that is enhanced in mechanical strength by improving a structure of a bezel supporting a panel assembly. The OLED display includes a panel assembly that includes a display region, a pad region, and a plurality of OLEDs arranged in the display region and a bezel coupled to the panel assembly, the bezel including synthetic resin, wherein, when a diagonal length of the display region is in the range of 25.4 to 101.6 mm, the bezel being designed to satisfy the following inequality t≧0.0003×a, where t(mm) is a thickness of the bezel and a(mm | 08-06-2009 |
20090201229 | LIGHT-EMITTING APPARATUS, METHOD FOR PRODUCING LIGHT-EMITTING APPARATUS, AND ELECTRONIC APPARATUS - The invention provides a light-emitting apparatus that has a plurality of pixels each of which has a set of four sub pixels including a red, a green, a blue, and a remaining sub pixel, together making up a display screen. Each of the sub pixels has a light-emitting layer and color filter that transmits light corresponding to the sub pixel. The light-emitting layer includes a white light-emitting material that emits three-peak white light, with an emission spectrum having a red peak, a green peak, and a blue peak falling within the wavelength range of red light, of green light, and of blue light, respectively. Low intensity regions exist between the red peak and the green peak and between the green peak and the blue peak. The light-emitting layers of the sub pixels extend along the display screen. The color filters overlap the light-emitting layers in a plan view. | 08-13-2009 |
20090201230 | Active Matrix Organic Electro-Optic Devices - This invention generally relates to active matrix organic electro-optic devices and to related display driving methods. In embodiments the invention relates to top-emitting OLED (Organic Light Emitting Diode) displays including additional circuitry which may be employed for display driving or other functions. | 08-13-2009 |
20090201231 | EL DISPLAY DEVICE - An EL display device includes: a source driver circuit to output a video signal voltage; a gate driver circuit to select a pixel in a display screen; a first capacitor to maintain the video signal voltage; and a drive transistor to supply current to an EL element of a pixel. The video signal voltage is applied to the drive transistor to perform a predetermined operation, and written into the first capacitor. The video signal voltage maintained in the first capacitor is used to perform an offset cancel operation. | 08-13-2009 |
20090201232 | LIGHT EMITTING DISPLAY APPARATUS AND DRIVING METHOD THEREOF - A light emitting display apparatus, capable of protecting light emitting elements by preventing overcurrent from flowing into the elements, and a method of driving the light emitting display apparatus are disclosed. In one embodiment, the light emitting display apparatus comprises a pixel portion comprising a plurality of pixels for emitting light in response to a data signal and a scan signal, a data driver for generating and transmitting the data signal to the pixel portion; a scan driver for generating and transmitting the scan signal to the pixel portion, a timing controller for controlling the data driver and the scan driver, and a controller for detecting a current flowing through each of the pixels and blocking light emission of the pixel portion in case that the detected current is greater than a predetermined value. | 08-13-2009 |
20090207103 | Light-emitting hologram based on Organic Polymeric Diode - (OLED/PLED) - The present invention concerns a color display device. The pixel of display consists of three light-emitting two-dimensional holograms, of blue, green and red colors. The holograms are formed as interference pictures, and registered on an organic layer of the polymeric diode. The polymer layer radiates a full spectrum of white light, but at the expense of holographic cracks, take place, some optical effects, which influence on wavelength of light, as well, color of pixel. | 08-20-2009 |
20090207104 | DEMULTIPLEXER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - An organic light emitting display device, wherein the device includes a scan driver for supplying a scan signal to scan lines during a frame time-divided into a plurality of subframes, a data driver coupled to output lines for supplying data signals on each of the output lines, demultiplexers coupled to the output lines for supplying the data signals to data lines, and pixels located at crossing regions of the data lines and the scan lines. Each of the demultiplexers includes a switch coupled between a corresponding one of the output lines and a first data line of the data lines, and a second data line of the data lines is directly coupled to the corresponding one of the output lines. | 08-20-2009 |
20090207105 | Organic light emitting diode display - An organic light emitting diode (OLED) display including a plurality of data lines to which a data voltage is supplied, a plurality of pairs of gate lines each comprising a first gate lines to which a first scan pulse is supplied and a second gate lines to which a second scan pulse partially overlapping the first scan pulse in an opposed phase is supplied, an OLED that emits light by current that flows between the high potential driving voltage source and the low potential driving voltage source, a driving device for controlling the current that flows through the OLED in accordance with a gate-source voltage applied between a gate electrode connected to a first node and a source electrode connected to the low potential driving voltage source, a storage capacitor connected between the first node and the second node, and a switch circuit. | 08-20-2009 |
20090207106 | ORGANIC EL DISPLAY MODULE AND MANUFACTURING METHOD OF THE SAME - On a panel, a plurality of PVDD lines, each of which corresponds to a horizontal line of pixels and supplies power to the pixels of the horizontal line, are provided. A voltage drop correction unit that obtains a voltage drop before reaching the pixel, based on resistance in the plurality of power supply lines and currents flowing therein, and corrects display data so as to cancel the obtained voltage drop of the pixel. A display unevenness correction unit that corrects uneven brightness caused by a variation in a TFT characteristic of the pixel by performing a calculation using display data of the pixel and obtained correction data of the pixel. | 08-20-2009 |
20090207107 | Electro-luminescence display device - An electro-luminescence display device and a method of driving the same for controlling a full white brightness depending upon a brightness of the external environment and thus controlling a brightness mode is disclosed. An electro-luminescence display device according to the present invention comprising: a display panel having pixels light-emitted by a supplied current; a data driver for applying a data voltage corresponding to said current to the pixels; and a timing controller for dividing one frame into a plurality of sub-frames and applying said data voltage corresponding to each of the plurality of sub-frames to the data driver and for controlling an emission time of each frame. | 08-20-2009 |
20090213045 | Display device and driving method thereof - It is provided a display device that prevents, when applying a reverse bias, an anode line and a power supply line included in a signal line driver circuit from being short-circuited, and a driving method thereof. According to the invention, a reverse bias applying circuit is provided in a scan line driver circuit or a signal line driver circuit, a signal from the reverse bias applying circuit is supplied to a transistor disposed between a signal line and an anode line, and thereby the transistor is turned off. The reverse bias applying circuit comprises an analog switch or a clocked inverter and a biasing transistor, and drives so as to invert potentials of the anode line and a cathode line and apply a reverse bias to a light emitting element, while turn off the analog switch and turn on the biasing transistor. Then, a potential of the anode line becomes equal to that of a scan line, and thereby turning off the transistor between the anode line and the signal line assuredly. | 08-27-2009 |
20090213046 | Organic light emitting diode display and method of driving the same - An organic light emitting diode display includes a data line, a gate line that crosses the data line to receive a scan pulse, a high potential driving voltage source to generate a high potential driving voltage, a low potential driving voltage source to generate a low potential driving voltage, a light emitting element to emit light due to a current flowing between the high potential driving voltage source and the low potential driving voltage source, a drive element connected between the high potential driving voltage source and the light emitting element to control a current flowing in the light emitting element depending on a voltage between a gate electrode and a source electrode of the drive element, and a driving current stabilization circuit to apply a first voltage to the gate electrode of the drive element to turn on the drive element and to sink a reference current through the drive element to set a source voltage of the drive element at a sensing voltage and to modify the voltage between the gate and source electrodes of the drive element to scale a current to be applied to the light emitting element from the reference current. | 08-27-2009 |
20090213047 | ELECTROPHORETIC DISPLAY DEVICE AND METHOD OF MANUFACTURING ELECTROPHORETIC DISPLAY DEVICE - An electrophoretic display device includes pixels each including an electrophoretic element that has a pixel electrode, an opposing electrode that faces the pixel electrode, and an electrophoretic layer that is configured by electrophoretic particles disposed between the pixel electrode and the opposing electrode. The pixels are arranged two-dimensionally, and an insulating layer formed of a photosensitive insulating material is disposed in areas between the adjacent pixel electrodes. | 08-27-2009 |
20090219230 | El Display panel module, el display panel and electronic apparatus - Disclosed herein is an electro luminescence display panel module, including: a pixel array section including a plurality of pixels, a plurality of signal lines extending in a vertical direction, and a plurality of horizontal lines extending in a horizontal direction, the signal lines and the horizontal lines being connected to the pixels such that each of the signal lines is connected to N ones of the pixel circuits which are connected to the same one of the horizontal lines, N being a natural number equal to or greater than 2; a first sampling control line; N second sampling control lines; a sampling scan driver; N pulse power supplies; and a horizontal selector; the pixel array section, the first sampling control lines, the N second sampling control lines, the sampling scan driver, the N pulse power supplies and the horizontal selector being mounted on the same substrate. | 09-03-2009 |
20090219231 | El display panel, electronic apparatus and a method of driving el display panel - Disclosed herein is an electro luminescence display panel having a pixel structure corresponding to an active matrix drive system, including: a reverse bias potential generating portion configured to generate a reverse bias potential in which corresponding one of gradation values of pixels is reflected; and a voltage applying portion configured to apply the reverse bias potential to a gate electrode of a drive transistor composing a pixel circuit adapted to operate for a non-emission time period. | 09-03-2009 |
20090219232 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel of an organic light emitting display device and an organic light emitting display device using the same. The pixel is configured to compensate for the deterioration of organic light emitting diodes. The pixel includes an organic light emitting diode; a pixel circuit including a drive transistor for controlling an amount of electric current that flows from a first power source to a second power source via an organic light emitting diode; and a compensation unit between a gate electrode and a first electrode of the drive transistor for controlling a voltage of the gate electrode of the drive transistor to correspond to the deterioration of the organic light emitting diode. The compensation unit includes a transistor and a capacitor coupled in series between the gate electrode and the first electrode of the drive transistor. | 09-03-2009 |
20090231239 | DISPLAY DEVICE - In a current driving display device, a first operation in which pixel circuits in the odd rows are sequentially scanned to set a current supplied to display elements and a second operation in which pixel circuits in the even rows are sequentially scanned to set a current supplied to display elements are alternately repeated. The current set in the pixel circuits is supplied to the display elements in parallel with the first and the second operations, the number of times in the period is twice or more than the number of times in which the pixel circuit sets a current supplied to the display element. Flickers are suppressed. | 09-17-2009 |
20090231240 | ORGANIC ELECTROLUMINESCENT ELEMENT AND DISPLAY DEVICE - An organic electroluminescent element comprising an anode and a cathode that form a pair of electrodes, and at least one organic compound layer sandwiched between the pair of electrodes, at least one of the electrodes being transparent or translucent, and the organic compound layer(s) containing, at least one charge-transporting polyester composed of repeating units represented by Formula (I-1) and Formula (I-2) as a partial structure (wherein X is represented by Formula (III)), and a display device including the same are provided. | 09-17-2009 |
20090231241 | LIGHT EMITTING DISPLAY DEVICE - A light emitting display device using a drive circuit formed of only unipolar thin film transistors, which suppresses effects of characteristic shifts of transistors, and is applicable to large, high-resolution light emitting displays. The device includes a pixel having an organic EL device (LED) and a drive circuit thereof. In a current writing period, the drive circuit sets TFT | 09-17-2009 |
20090231242 | ELECTRODE LAYOUT FOR A DISPLAY - The display device ( | 09-17-2009 |
20090231243 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME - An organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device including pixels including opposing first and second electrodes, and an intermediate layer disposed between the first and second electrodes. The pixels are divided into red, green, and blue sub-pixels. The intermediate layer has a thickness that varies according to the sub-pixels. | 09-17-2009 |
20090231244 | MOBILE TERMINAL AND DISPLAY METHOD THEREOF - A display unit includes a transparent light emitting element and displaying information on both sides thereof; a sensing unit for detecting the direction in which the screen of the display unit faces; and a controller for determining a placed state of the display unit according to the detected screen direction and changing information displayed on the display unit according to the determined placed state of the display unit. The screen direction may be one of a first direction in which a front surface of the display unit faces upward, and a second direction in which a rear surface of the display unit faces upward. By using the transparent display device, information can be displayed by using both surfaces of the display device, and displayed information can be changed according to a placed state of the display device. Thus, the users' interest and fun can be aroused and user convenience can be provided. | 09-17-2009 |
20090237332 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel for use in a light emitting display capable of being stably initialized without a separate initialization power. An exemplary embodiment of the pixel includes six transistors, a storage capacitor, and an organic light emitting diode OLED. A data signal supplied through a data line is transmitted into the pixel in response to a current scan signal supplied through a current scan line. A drive current corresponding to the data signal drives the OLED. One transistor is utilized to diode-connect the driving transistor in response to the current scan signal, compensating for variability in the threshold voltage of the driving transistor. The storage capacitor stores the data signal. The storage capacitor is initialized to a low voltage in response to a previous scan signal supplied before the current scan signal. The organic light emitting diode OLED emits light corresponding to the drive current supplied from the driving transistor. | 09-24-2009 |
20090237333 | VOLTAGE SELECTION CIRCUIT, ELECTROPHORETIC DISPLAY APPARATUS, AND ELECTRONIC DEVICE - Provided is a voltage selection circuit for outputting a potential selected from a plurality of input potentials, the voltage selection circuit capable of selectively outputting a first high-level potential being a highest potential, a second high-level potential, or a third high-level potential being a lowest potential from an output terminal thereof. The voltage selection circuit includes a first switching circuit that supplies the first high-level potential to the output terminal, a second switching circuit that supplies the second high-level potential to the output terminal, and a third switching circuit that supplies the third high-level potential to the output terminal. The first switching circuit includes a high-voltage transistor and a level shifter connected to a gate terminal of the high-voltage transistor. The second switching circuit includes a first low-voltage transistor, a level shifter connected to a gate terminal of the first low-voltage transistor, and a diode disposed between the first low-voltage transistor and the output terminal. The third switching circuit includes a second low-voltage transistor and a diode disposed between the second low-voltage transistor and the output terminal. | 09-24-2009 |
20090243976 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of compensating for deterioration of an organic light emitting diode includes an organic light emitting diode. A pixel circuit includes a first transistor controlling an amount of current supplied from a first power supply to the organic light emitting diode corresponding to a data signal. A compensating unit controls a voltage of a gate electrode of the first transistor to compensate for deterioration of the organic light emitting diode. The compensating unit includes a second transistor coupled between the gate electrode of the first transistor and the organic light emitting diode and turned off during a period of the supply of the data signal to the pixel circuit, and a feedback capacitor coupled between the second transistor and the organic light emitting diode. | 10-01-2009 |
20090243977 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME - An organic light emitting display device including: a plurality of pixels, each of the pixels including an organic light emitting diode (OLED) and a pixel circuit for driving the OLED, the pixel circuit including: a first transistor for transferring a data signal supplied from a data line to a current scan line; a second transistor for controlling an amount of current corresponding to the data signal that flows from a first pixel power supply to the OLED; a third transistor for diode-connecting the second diode according to the current scan signal; a storage capacitor for maintaining a gate voltage of the second transistor in accordance with the data signal; and a fourth transistor for initializing a first node according to a previous scan signal supplied before the current scan signal is supplied, the fourth transistor in a pixel region of a previous row pixel. | 10-01-2009 |
20090243978 | Display apparatus - A display apparatus, includes: a plurality of pixel circuits disposed in rows and columns and each including a driving transistor configured to produce driving current, an electro-optical element connected to an output terminal of the driving transistor, a storage capacitor configured to store information corresponding to a signal amplitude of an image signal, and a first sampling transistor and a second sampling transistor connected in cascade connection for writing the information corresponding to the signal amplitude into the storage capacitor; a vertical scanning section configured to produce a vertical scanning pulse for vertically scanning the pixel circuits; a plurality of vertical scanning lines connected to the vertical scanning section; a horizontal scanning section configured to supply the image signal to the pixel circuits in synchronism with the vertical scanning by the vertical scanning section; and a plurality of horizontal scanning lines connected to the horizontal scanning section. | 10-01-2009 |
20090243979 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel is provided including an OLED having anode and cathode electrodes. A second transistor controls current supplied from a first power supply to a second power supply via the OLED. A first transistor is coupled between a gate electrode of the second transistor and a data line and is configured to turn on when a scan signal is supplied to a scan line. A first capacitor is coupled between the first power supply and the gate electrode. A second capacitor is coupled between the anode electrode and the gate electrode. A fourth transistor is coupled between the second capacitor and the anode electrode and is configured to turn on when a control signal is supplied to a control line. A third transistor is coupled between the second transistor and the anode electrode and is configured to turn off when a signal is supplied to a light emitting control line. | 10-01-2009 |
20090251391 | Method and apparatus for power recycling in a display system - A power recycling method and apparatus for driving capacitive display elements are described. The driving process involves charging and discharging the display elements. More particularly, the method effectively reuses some of the energy during the discharging process. Energy in display elements flows back from the panel to a power supply and other optionally to devices like RAM, MCU directly during the discharging process. Diodes between one or more power supplies and the display elements ensure that the discharge paths are disconnected when the voltage of display elements drops below the voltage of the power supply. A resistor path from the display elements to ground or a power supply lower than the display threshold voltage of the display elements guarantees that elements are turned OFF after the discharge process. | 10-08-2009 |
20090251392 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE - A pixel and an organic light emitting display device using the same is provided. The pixel includes an organic light emitting diode (OLED). A pixel circuit controls an amount of current that flows into the OLED. In the pixel, the pixel circuit includes a first transistor controlling an amount of current that flows into a second power source via the OLED from a first power source. A storage capacitor is positioned between a gate electrode of the first transistor and the second power source. A boosting capacitor is positioned between the gate electrode of the first transistor and a boost line. | 10-08-2009 |
20090256782 | Image display device and method of driving the same - An image display device includes a display portion formed by disposing pixel circuits in a matrix, and a signal line driving circuit and a scanning line driving circuit for driving the pixel circuits through signal lines and scanning lines of the display portion. The pixel circuit includes at least: a light emitting element; a drive transistor for current-driving the light emitting element by a drive current corresponding to a gate-to-source voltage thereof; a hold capacitor composed of either one capacitor or a plurality of coupling capacitors for holding therein the gate-to-source voltage; and a write transistor adapted to be turned ON/OFF in accordance with a write signal outputted from the scanning line driving circuit, thereby setting a voltage developed across terminals of the hold capacitor at a voltage of corresponding one of the signal line. | 10-15-2009 |
20090256783 | CURRENT CONTROL IN DISPLAY DEVICE - An electroluminescent display device having a first and a second power supply; a respective power supply line for each row, wherein each power supply line is placed along a horizontal direction and is connected to the respective first electrodes of the driving TFTs of the pixels in the corresponding row; a plurality of switches, each connected to one or more power supply lines, for selectively connecting the corresponding one or more power supply lines to either the first or the second power supply; a gate driver for selecting a gate line; and a selecting circuit for controlling the plurality of switches, wherein the selecting circuit causes the power supply line corresponding to the selected gate line to be connected to the first power supply, and the one or more power supply lines not corresponding to the selected gate line to be connected to the second power supply. | 10-15-2009 |
20090256784 | INVERTER AND DISPLAY DEVICE INCLUDING THE SAME - An inverter includes a first PMOS transistor having a gate electrode coupled to a first input port, a first electrode coupled to a first node and a second electrode coupled to the gate electrode or a second power source; a second PMOS transistor having a gate electrode coupled to the first input port, and first and second electrodes coupled respectively to a first power source and an output port; a third PMOS transistor having a gate electrode coupled to the first node, first and second electrodes coupled respectively to the output port and a second input port; and a capacitor coupled between the first node and the output port. | 10-15-2009 |
20090262046 | HIGH APERTURE RATIO PIXEL LAYOUT FOR DISPLAY DEVICE - A display device, pixel layout and method of forming the same is provided. The display device includes: a plurality of pixels formed in a pixel array area; and a power supply grid for distributing power to the pixels. Each pixel has a light emitting device and a plurality of transistors. The power supply grid includes a first group of power supply lines and a second group of power supply lines. The first group of power supply lines extend across the pixel array area. The second group of power supply lines extends across the pixel array area and electrically contacts the first group of power supply lines in the pixel array area. Each pixel is coupled to at least one power supply line in the first group of power supply lines and the second group of power supply lines. | 10-22-2009 |
20090262047 | EL display panel and electronic apparatus - Disclosed herein is an electroluminescence display panel including pixel circuits corresponding to an active-matrix drive system, the electroluminescence display panel including a structure configured to include first light-emitting areas corresponding to an emission color that is strongest in a characteristic of changing a threshold voltage of a thin film transistor and second light-emitting areas that correspond to another emission color and are each disposed between the first light-emitting areas, wherein a sampling transistor in each of the pixel circuits for driving the second light-emitting areas is disposed in an area corresponding to a range of one fourth to three fourths of a length from a peripheral edge of one of two first light-emitting areas that are adjacent to each other with intermediary of the second light-emitting area of the sampling transistor to a peripheral edge of the other of the two first light-emitting areas. | 10-22-2009 |
20090262048 | Flat panel display device, method of aging the same, and method of testing lighting of the same - A flat panel display device formed in a pentile structure is provided, which includes a pixel portion and a lighting tester. The pixel portion includes a first pixel column, a second pixel column and a third pixel column. In the first pixel column, first pixels for displaying a first color and second pixels for displaying a second color are alternately arranged in a direction the data lines. In the second pixel column, first and second pixels arranged in reverse order of the first pixel column in a direction parallel to the data lines. In the third pixel column, third pixels for displaying a third color are arranged in a direction parallel to the data lines. The lighting tester applies a first voltage to the first pixel column and applies a second voltage to the second pixel column during a first time period. The lighting tester applies the second voltage to the first pixel column and applies the first voltage to the second pixel column during a second time period. | 10-22-2009 |
20090262049 | ORGANIC LIGHT-EMITTING SUBSTRATE, METHOD OF MANUFACTURING THE SAME, AND ORGANIC LIGHT-EMITTING DISPLAY DEVICE HAVING THE SAME - An organic light-emitting substrate includes a base substrate, a gate line, a data line, a bias line, an organic light-emitting diode, a switching transistor, a driving transistor and a repair line. The bias line is spaced apart from the gate line and the data line. The organic light-emitting diode includes a pixel electrode, a common electrode and an organic light-emitting part. The switching transistor is connected to the gate line and the data line. The driving transistor is connected to the bias line, the pixel electrode and the switching transistor. The repair line is formed from a pixel metal layer that is identical to the pixel electrode to be spaced apart from the pixel electrode, and is formed along the first direction to be overlapped with the gate line. Therefore, the repair line may repair electric defects of the gate line. | 10-22-2009 |
20090262050 | Display Device - A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurality of current supply lines extending parallel to each other. Each current supply line is connected to a plurality of driving transistors in a line. One end of each current supply line is connected to the first current input terminal via a first wiring intersecting with the current supply lines, and the other end thereof is connected to the second current input terminal via a second wiring intersecting with the current supply lines. Accordingly, a current is supplied to each current supply line from both the first and the second current input terminals. The first and the second current input terminals are provided separately from each other. | 10-22-2009 |
20090267873 | ELECTROOPTIC APPARATUS SUBSTRATE AND EXAMINING METHOD THEREFOR AND ELECTROOPTIC APPARATUS AND ELECTRONIC EQUIPMENT - An electrooptic apparatus substrate and examination method therefor can be provided which can implement an examination without requiring bringing a probe into contact thereto from the outside and with satisfactory measuring accuracy. A substrate | 10-29-2009 |
20090267874 | ACTIVE MATRIX TYPE DISPLAY APPARATUS - An active matrix type display apparatus includes a plurality of pixels arranged in a matrix on a substrate, each pixel including, a display element, a driving transistor which controls the light emitting current, a first capacitor, a second capacitor, a first switch which is on/off controlled by a first control signal, a second switch which is on/off controlled by a second control signal, a third switch which is on/off controlled by a third control signal, a fourth switch which is on/off controlled by a fourth control signal, and a fifth switch which is on/off controlled by a fifth control signal, and at least one power source which is disposed arbitrarily separately to correspond to a light emission color assigned to the display element and is connected to the high potential power source line. | 10-29-2009 |
20090273546 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - An organic electroluminescent display device includes a power supply unit outputting a driving voltage, a base voltage and a reference voltage, a source driving unit outputting a data voltage, a gate driving unit outputting a positive scan signal and a negative scan signal, a timing control unit controlling the source driving unit and the gate driving unit, and a display unit receiving the driving voltage, the base voltage, the reference voltage, the positive scan signal and the negative scan signal, the display unit including an organic light-emitting diode that has driving currents depending on the data voltage. | 11-05-2009 |
20090273547 | Display apparatus and display-apparatus driving method - Disclosed herein is a driving method for driving a display apparatus, the display apparatus including: N×M light emitting units; M scan lines; N data lines; a driving circuit provided for each of the light emitting units to serve as a circuit having a signal writing transistor, a device driving transistor, a capacitor and a first switch circuit; and a light emitting device. | 11-05-2009 |
20090273548 | DISPLAY DEVICE - A display device includes: a display element including a plurality of sub-elements connected to retention capacities, respectively; a plurality of writing transistors arranged corresponding to the sub-elements, respectively, and writing an image signal to the retention capacities; and a plurality of driving transistors driving the sub-elements, respectively based on the image signal written through the writing transistors. The writing transistors, the driving transistors or both of them are aligned along a source-drain alignment direction in which a drain electrode and a source electrode of each transistor in the writing transistors and driving transistors are aligned, and the writing transistors, the driving transistors or both of them are arranged so that drain electrodes or source electrodes in a pair of transistors are immediately adjacent to each other, the pair of transistors being a pair of the writing transistors or the driving transistors, and being immediately adjacent to each other. | 11-05-2009 |
20090278769 | Digital picture frame system - A digital picture frame system includes a storage unit, a display unit, a control unit, a first port, a first user interface and a power supply unit. The control unit is electrically connected with the storage unit and the display unit to access the storage unit and deliver a picture to the display unit to display. The first port electrically connected to the control unit is used for electrically connecting to an external electronic device. The first user interface electrically connected to the control unit is used for sensing motion of the digital picture frame system or voice to operate the digital picture frame system. The power supply unit electrically connected to the control unit is used for providing a power required for the operation of the digital picture frame system. The above-mentioned digital picture frame system is operated by shaking or voice activation, in a preferred embodiment, further can process picture with special efficacy, therefore there are increased interaction and interest. | 11-12-2009 |
20090278770 | Active matrix organic light emitting display (amoled) device - The present invention relates to an active matrix OLED (Organic Light Emitting Display) device. It comprises a matrix of luminous elements associated to different colour components (red, green, blue). According to the invention, the connection of the row driver and/or data driver to the luminous elements of the matrix is modified. Each output of the row driver is connected to luminous element associated to a same colour component (red or green or blue). | 11-12-2009 |
20090278771 | EL display panel, electronic instrument and panel driving method - Disclosed herein is an organic electro luminescence display panel provided with a pixel structure and a wiring structure which are adapted to an active matrix driving method; and driven by an electric potential asserted on each multi-consecutive-row bundle composed of adjacent power-supply lines, which are electrically tied to each other, each stretched in a horizontal direction and each used for supplying a driving current to an organic electro luminescence light emitting device employed in every pixel circuit of said organic electro luminescence display panel, to serve as an electric potential having two or more different magnitudes. | 11-12-2009 |
20090278772 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light emitting display and a method for driving the same. An organic light emitting display includes: a frame memory having a first portion configured to store a first portion of image signals that is the same in an n−1 | 11-12-2009 |
20090284449 | Organic light emitting display device - An organic light emitting display device having a pixel unit including a plurality of scan lines, data lines and pixel power lines arranged in a matrix type and forming respective sub pixels in an intersection region of the plurality of scan lines, data lines and pixel power lines; a thin film transistor including a pad unit receiving signals to drive driving the respective sub pixels, a scan driver and a data driver supplying the signals to the plurality of scan lines and data lines through the pad unit, and non-pixel unit formed with a power supply line supplying power to the pixel powers line, the sub-pixel including an oxide semiconductor layer; a capacitor having a lower electrode and an upper electrode formed of a transparent conductive material; and an organic light emitting element electrically coupled to the thin transistor and disposed on the capacitor. | 11-19-2009 |
20090284450 | LIGHT-EMITTING APPARATUS - When the degradation of a light-emitting device is detected and the luminance is compensated, because the lowering in current efficiency involved in the degradation varies for each luminance, use of the same compensation coefficient provides a luminance region in which the compensation is insufficient. A light-emitting apparatus includes a light-emitting device; a control unit for changing a display luminance of the light-emitting device depending on an input signal; a degradation detection unit for detecting a degradation amount of the light-emitting device; and a correction unit for correcting the input signal depending on a detected degradation amount, wherein the correction unit corrects the input signal depending on the degradation amount of the light-emitting device and the display luminance determined by the input signal. | 11-19-2009 |
20090289875 | Electro-optical device and electronic apparatus - The invention provides an electro-optical device that has luminescent elements of a long lifetime by preventing oxygen or moisture from entering to luminescent layers or electrodes even in case of an electrode-optical device provided with a number of luminescent layers and an electronic apparatus provided with the electro-optical device. The invention can include an electro-optical device having first electrodes on a base body, a plurality of element areas including element layers including at least one functional layers disposed above the first electrodes, a second electrode formed above the element layers, a surrounding sections disposed on the base body so as to cover outer sides of the element layers included the element areas in the nearest proximity of the periphery of the base body, and a gas-barrier layer covering over the second electrode. Outer sides of the surrounding sections can be covered with the second electrode, and the gas-barrier layer can be in contact with the base body. | 11-26-2009 |
20090295689 | TWO AND THREE DIMENSIONAL VIEW DISPLAY - A display device ( | 12-03-2009 |
20090295690 | Electronic circuit and panel having the same - Disclosed herein is an electronic circuit, including: a light emitting element, having diode characteristics, for emitting a light in accordance with a drive current; a sampling transistor for sampling a video signal; a driving transistor for supplying the drive current to the light emitting element; and a hold capacitor for holding therein a predetermined potential, the hold capacitor being connected to each of an anode side of the light emitting element, and a gate of the driving transistor; wherein a laminated portion of a first metallic layer serving as a gate of the sampling transistor, and a second metallic layer serving as a source of the sampling transistor is formed so as to have an area equal to or smaller than a predetermined area. | 12-03-2009 |
20090295691 | Image display device - The present invention disposes a switch transistor between a driving transistor and a light emitting element, and sets the switch transistor in an off state during a non-emission period. Thereby, a variation in threshold voltage of the driving transistor is corrected while destruction of the light emitting element due to a reverse bias is avoided. | 12-03-2009 |
20090303162 | Image Display Device - Provided is an image display device in which deterioration of a self-light-emitting element within a pixel is corrected accurately. A driver transistor provided in each pixel to drive the self-light-emitting element is driven in a saturation region. A voltage detection unit detects a voltage across the self-light-emitting element of each pixel, which is observed when a constant current is supplied to the self-light-emitting element. When the voltage detected by the voltage detection unit exceeds a threshold voltage, one of a reference voltage and a power supply voltage is controlled to keep an operation region of the driver transistor to the saturation region in every one of a plurality of the pixels of the image display device. | 12-10-2009 |
20090303163 | Image Display Device - Provided is an image display device in which deterioration of a self-light-emitting element within a pixel is corrected accurately. A detection unit detects, within a detection period, a difference in characteristics between self-light-emitting elements of adjacent pixels. A first subtraction circuit outputs a differential voltage between a reference voltage and an image voltage to a self-light-emitting element that is determined by the detection unit as a deteriorated element. An amplifier amplifies an output of the first subtraction circuit with a gain [1/{1-(α/100)}] | 12-10-2009 |
20090303164 | Display Device - The invention provides an image display device capable of reducing the transmission delay of a scanning signal. A plurality of scanning signal lines are wired in one pixel circuit row. Pixel circuits of the pixel circuit row are connected to any of the plurality of scanning signal lines. | 12-10-2009 |
20090303165 | ACTIVE MATRIX DISPLAY DEVICE - In order to provide an active matrix display device in which parasitic capacitance or the like is suppressed by forming a thick insulating film around an organic semiconductor film and disconnection or the like does not occur in the opposing electrode formed on the upper layer of the thick insulating film, in an active matrix display device, first, a bank layer composed of a resist film is formed along data lines and scanning lines, and by depositing an opposing electrode of a thin film luminescent element on the upper layer side of the bank layer, capacitance that parasitizes the data lines can be suppressed. Additionally, a discontinuities portion is formed in the bank layer. Since the discontinuities portion is a planar section which does not have a step due to the bank layer, disconnection of the opposing electrode does not occur at this section. When an organic semiconductor film is formed by an ink jet process, a liquid material discharged from an ink jet head is blocked by the bank layer. | 12-10-2009 |
20090309815 | FLEXIBLE REFLECTIVE DISPLAY DEVICE - A flexible reflective display device capable of improving display quality by using a reflective electrode employing carbon nanotubes. In an exemplary embodiment, a flexible reflective display device includes a substrate, a thin film transistor, a first electrode, an electrophoretic layer and a second electrode layer. The thin film transistor is provided on the substrate. The first electrode includes carbon nanotubes and is electrically connected to the thin film transistor to display black color by reflecting external light. | 12-17-2009 |
20090309816 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device that is capable of compensating for deterioration of organic light emitting diodes includes: a scan driver driving scan lines, compensation control lines, and light emission control lines; a data driver supplying initialization voltage to data lines during a first subperiod of a horizontal period and supplying data signals to the data lines during a second subperiod of the horizontal period; and pixels positioned at crossing areas of the scan lines and the data lines. Each pixel includes: an organic light emitting diode; a pixel circuit including a driving transistor controlling current flowing through the organic light emitting diode; and a compensation unit adjusting voltage of the gate electrode of the driving transistor based on deterioration of the organic light emitting diode. The compensation unit includes a transistor and a capacitor serially coupled between the gate and source of the driving transistor. | 12-17-2009 |
20090309817 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device capable of maintaining a voltage of a driving power of a display panel in a substantially constant manner. The organic light emitting display device includes a display panel for receiving an image data and an input voltage to display an image; a driving IC for supplying the image data to the display panel, receiving the input voltage, and outputting an offset control signal in accordance with the received input voltage; and a power supply for controlling the input voltage in accordance with the offset control signal, and supplying the controlled input voltage to the display panel. | 12-17-2009 |
20090315812 | Panel and drive control method - In the present embodiment, threshold correction is performed simultaneously on all the pixels thanks to a common power line (DS) shared by all the pixels. Then, video signal lines are set to a second reference potential higher than a reference potential, followed by multi-step threshold correction and video signal writing which are performed in a line sequential manner. Performing the threshold correction immediately before the video signal writing ensures shorter time from the threshold correction to the video signal writing. This suppresses leak currents, providing improved image quality. | 12-24-2009 |
20090315813 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including: a pixel array section configured to have a plurality of pixels arranged in a matrix thereon, each of the pixels including an electro-optical element, a writing transistor, a driving transistor, and a storage capacitor connected between the gate electrode and the source electrode of the driving transistor for storing an image signal written by the writing transistor, each of the pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of the driving transistor with a correction amount determined from current flowing to the driving transistor; a detection section configured to detect variation of a characteristic of any transistor in the pixels; and a control section configured to control the period of the mobility correction process based on a result of the detection by the detection section. | 12-24-2009 |
20090315814 | Self-light emitting display unit and electronic device - A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased. | 12-24-2009 |
20090322657 | ORGANIC LIGHT EMITTING DISPLAY AND FABRICATING METHOD THEREOF - A flat panel display according to an exemplary embodiment of the present invention includes a transistor disposed on a substrate, a planarizing layer having a trench, which includes a bottom surface and a side surface, disposed on the transistor, a reflective film disposed in the trench, a pixel electrode disposed on the reflective film and connected to the transistor, a partition wall having an opening to expose a portion of the pixel electrode, an organic light emitting member disposed on the reflective film, and a common electrode disposed on the organic light emitting member. | 12-31-2009 |
20100001930 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display is conducted by using a time gray-scale system, in which one frame period is divided into a plurality of sub-frame periods, and a voltage applied to an EL element of a pixel is varied on a sub-frame period basis. Because of this, a display device is provided in which the fluctuations in brightness caused by an environment temperature of an EL element are suppressed with a gray-scale display method that is unlikely to be influenced by variations in characteristics of TFTs in a pixel portion and that is unlikely to be influenced by variations in a display period. | 01-07-2010 |
20100001931 | DISPLAY DEVICE AND ELECTRONIC DEVICE USING THE SAME - A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in the case where the light emitting element emits light and emits no light. In a case where the light emitting element emits light, a potential of the gate electrode of the driving transistor is to be held; and in a case where the light emitting element emits no light, a potential that certainly turns off the gate electrode of the driving transistor is kept on applying to the gate electrode of the driving transistor. | 01-07-2010 |
20100013745 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device having an electrostatic capacitive type touch panel function with reduced thickness and improved luminance. A display panel of the organic light emitting display device includes a substrate, a display unit having a plurality of pixels on the substrate, and a touch sensing unit on the display unit. The touch sensing unit includes an encapsulation substrate and a capacitive pattern layer on a side of the encapsulation substrate facing the display unit. The capacitive pattern layer has a plurality of openings corresponding in position to the plurality of pixels. | 01-21-2010 |
20100013746 | DISPLAY APPARATUS - In a display apparatus that includes an active matrix substrate on which multiple pixel circuits are disposed, each having a light emitting element, a drive transistor, a capacitor element connected between a gate terminal and the source terminal of the drive transistor, and a selection transistor, and a threshold voltage of the drive transistor is corrected by causing the capacitor element to hold the threshold voltage of the drive transistor, reverse bias voltages, each having a magnitude corresponding to a preset initial threshold voltage and a drive voltage of the drive transistor, the magnitude of the drive voltage being dependent on the amount of emission of the light emitting element, are supplied to the gate terminal of the drive transistor. | 01-21-2010 |
20100013747 | Light-Emitting Device and Driving Method Thereof - Charge corresponding to a potential difference between electrodes of an electroluminescence element is accumulated in a period in which the electroluminescence element emits light; the potential difference is detected without decrease in the luminance at the time of light emission of the electroluminescence element; and a reference potential of one electrode of the electroluminescence element is changed based on the detected potential difference, so that reduction in luminance of the electroluminescence element due to deterioration of the electroluminescence element is compensated. | 01-21-2010 |
20100019996 | DISPLAY SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - A display substrate includes a switching transistor electrically connected to a gate line and a data line, the data line extending in a first direction substantially perpendicular to the gate line extending in a second direction, the switching transistor including a switching active pattern comprising amorphous silicon, a driving transistor electrically connected to a driving voltage line and the switching transistor, the driving voltage line extended in the first direction, the driving transistor including a driving active pattern comprising a metal oxide; and a light-emitting element electrically connected to the driving transistor. | 01-28-2010 |
20100026612 | Display device and electronic apparatus - Disclosed herein is a sampling transistor in an embodiment of the present invention is kept at the on-state with a time width shorter than one horizontal cycle, during the period from the rising of a control pulse supplied from a scanner to a scan line WS to the falling of the control pulse, and samples a video signal from a signal line SL to write the video signal to a hold capacitor. The sampling transistor includes the channel region between the source and the drain and has a sandwich gate structure in which a shield that electrically shields the channel region is disposed on the other side of the channel region. This suppresses change in the threshold voltage of the sampling transistor. | 02-04-2010 |
20100033407 | ORGANIC EL DISPLAY APPARATUS AND MANUFACTURE METHOD THEREOF - [Problems] To enhance production efficiency of an organic EL display apparatus active-driven with an organic EL element and an organic transistor. | 02-11-2010 |
20100033408 | EL DISPLAY DEVICE FOR REDUCING PSEUDO CONTOUR - An organic EL display device capable of preventing generation of pseudo contours is provided. Digital data of pixels in one frame is stored in a frame memory, and display is performed according to the stored digital data. One frame is divided into a plurality of unit frames, each of which is divided into a plurality of sub-frames. In each of the sub-frames, display is performed for a bit corresponding to the digital data. | 02-11-2010 |
20100033409 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device including a power generator for sending a plurality of voltages to a display unit. The display unit receives a scan signal, a light emitting control signal, and a data signal, which enable a current corresponding to the data signal to flow from a first power supply to a second power supply. The display unit includes a pixel circuit that includes a storage capacitor adapted to store the data signal and to stabilize the stored data signal utilizing a third power supply. A driver IC includes a signal generator for generating the data signal, the scan signal, and the light emitting control signal, and further includes a power generator for generating the first power, the second power, and the third power, wherein the second power and the third power are at a lower voltage than that of the first power. | 02-11-2010 |
20100039355 | Speaker apparatus providing with visual screen - A speaker apparatus having a video screen function is disclosed, in which a cone paper of a conventional speaker is substituted with a flexible OLED for thereby displaying various images and video sources in sync with an audio source. A flexible OLED is provided for displaying a video source and an externally upgraded video source in a speaker apparatus which comprises a sound output apparatus having a sound coil, a magnet, and a damper, and an electric circuit apparatus of the sound output apparatus. | 02-18-2010 |
20100045575 | ORGANIC LIGHT EMITTING DIODE DISPLAY - Exemplary embodiments of the present invention relate to an OLED display. The OLED display according to exemplary embodiments of the present invention includes: a substrate; a plurality of pixel electrodes on the substrate; a pixel defining layer on the substrate and having a plurality of openings exposing the plurality of pixel electrodes; a plurality of organic emission layers on corresponding pixel electrodes of the plurality of pixel electrodes; a sealing member including a plurality of concave lens containers and covering the plurality of organic emission layers and the pixel defining layer; and at least one condenser in the plurality of lens containers. The at least one condenser is configured to form a condensing area on the pixel defining layer for each of the plurality of lens containers. | 02-25-2010 |
20100045576 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display is disclosed. In one embodiment, the display includes 1) an organic light emitting diode comprising i) a pixel electrode, ii) an organic emission layer formed on the pixel electrode, and iii) a common electrode formed on the organic emission layer, 2) a dual brightness enhancement film formed over the common electrode of the organic light emitting diode, 3) a first phase delaying plate formed on the dual brightness enhancement film, 4) a corner cube film formed on the first phase delaying plate, 5) a second phase delaying plate formed on the corner cube film and a 6) polarizing plate formed on the second phase delaying plate, wherein at least one of the elements 2)-5) is configured to reduce reflection of external light incident onto the polarizing plate and/or reduce the loss of light emitted from the organic emission layer before outputting the emitted light through the polarizing plate. | 02-25-2010 |
20100045577 | ACTIVE MATRIX DISPLAY DEVICE - In order to provide an active matrix display device in which parasitic capacitance or the like is suppressed by forming a thick insulating film around an organic semiconductor film and disconnection or the like does not occur in the opposing electrode formed on the upper layer of the thick insulating film, in an active matrix display device, first, a bank layer composed of a resist film is formed along data lines and scanning lines, and by depositing an opposing electrode of a thin film luminescent element on the upper layer side of the bank layer, capacitance that parasitizes the data lines can be suppressed. Additionally, a discontinuities portion is formed in the bank layer. Since the discontinuities portion is a planar section which does not have a step due to the bank layer, disconnection of the opposing electrode does not occur at this section. When an organic semiconductor film is formed by an ink jet process, a liquid material discharged from an ink jet head is blocked by the bank layer. | 02-25-2010 |
20100045578 | DISPLAY DEVICE - The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to be input into the pixel portion is reduced, and the magnitude of a current to flow through the EL element is allowed to be maintained at a constant level even when a temperature of an EL layer changes by providing the EL display with another EL element to be used for monitoring a temperature. | 02-25-2010 |
20100053038 | COLOR DISPLAY AND METHOD FOR PRODUCING THE SAME - A color display including a plurality of pixels on a substrate, each pixels being area-divided into plural sub-pixels including at least two sub-pixels that each emit colored light of different wavelengths and a white sub-pixel, wherein the at least two sub-pixels and the white sub-pixel each have at least an optical path length-adjusting layer and an organic electroluminescence layer interposed between a layer that partially transmits light and partially reflects light and a light reflection layer to form a resonator structure. | 03-04-2010 |
20100053039 | Display Device and Driving Method Thereof - A display device includes a plurality of pixels respectively including a plurality of light-emitting elements, a comparing unit for comparing input image signals during a plurality of continuous frames for each pixel and determining whether the input image signals are repeated, a signal converter for converting the input image signal into a compensating image signal for the pixel where the input image signals are repeated during the continuous frames, and a data driver generating a data signal corresponding to the compensation image signal to supply the data signal to the pixel. | 03-04-2010 |
20100053040 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device includes: horizontal scan lines; vertical scan lines; an electro-optical element disposed at each of positions where the horizontal scan lines and the vertical scan lines intersect and selectively turned on based on a video signal and a vertical scan signal; a defect information storing section that stores defect information indicating whether each of the electro-optical elements has a defect; and a video signal generating section that generates a video signal to be supplied to the electro-optical element in each position based on a video signal supplied from outside and the defect information, wherein the video signal generating section supplies a video signal to the electro-optical elements such that the supply of a level required for turning on an element is stopped for an electro-optical element having a defect and the video signal supplied from the outside is supplied to an electro-optical element having no defect. | 03-04-2010 |
20100053041 | PIXEL CIRCUIT, LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A pixel circuit including at least a light emitting element, and a thin film transistor that supplies to the light emitting element a first current controlling a gray scale according to luminance-current characteristics of the light emitting element, wherein the thin film transistor has a back gate electrode, at least a driving period in which the thin film transistor supplies the first current to the light emitting element, and a writing period in which a second current is written to the thin film transistor before the driving period in order to pass the first current to the thin film transistor during the driving period are included, and by changing voltages which are applied to the back gate electrode in the driving period and the writing period, current capability to a gate voltage of the thin film transistor is made to differ. | 03-04-2010 |
20100053042 | Display Device - A plurality of data signal lines each of which is connected to at least one pixel circuit in one pixel circuit column and is not connected to the pixel circuits of other pixel circuit columns are provided to one pixel circuit column, and the pixel circuits in the pixel circuit column are connected to any one of the plurality of data signal lines. An image display device having such a constitution can alleviate lowering of display quality attributed to transmission delay or voltage drop of a scanning signal. | 03-04-2010 |
20100066651 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an organic light emitting device and a manufacturing method thereof. The organic light emitting device according to an embodiment of the present invention comprises: a first pixel displaying a first color; a second pixel displaying a second color; and a third pixel displaying a third color; wherein each of the first, second, and third pixels comprise a first translucent member, a second translucent member disposed on the first translucent member, an intermediate member disposed between the first and second translucent members, and a pixel electrode disposed on the second translucent member. | 03-18-2010 |
20100066652 | DISPLAY APPARATUS - A display device having a substrate, a power supply line, and a pixel electrode. The display device also having a transistor having a gate electrode and electrically coupled between the power supply line and the pixel electrode, a opposite electrode, and an organic semiconductor film disposed between the pixel electrode and the opposite electrode. The display device further having a holding capacitor having a first electrode electrically coupled to the gate electrode of the transistor, a second electrode, and a first insulation film disposed between the first electrode and second electrode and a second insulation film. The holding capacitor of the display device being disposed between the substrate and the second insulation film and at a part of the second insulation film being disposed between the pixel electrode and the substrate. | 03-18-2010 |
20100066653 | DISPLAY DEVICE AND ELECTRONIC DEVICE - It is an object of the present invention to provide a display device in which images can be seen under a dark place to intense external light. In the display device, display is performed by changing the gray scale number depending on external light intensity, and display modes can be switched depending on contents displayed on the screen. An analog mode and a digital mode are switched depending on external light intensity. In an analog digital switching circuit, when a video signal is an analog value, a signal is outputted to a pixel array without any change and, when the video signal is a digital value, the signal is outputted to a circuit that performs a digital operation such as a latch circuit. Consequently, display gray scales of a pixel are changed appropriately. Accordingly, a clear image can be displayed. For example, it is possible to ensure visibility in a wide range of a dark place or under indoor florescent light to outdoor sun light. | 03-18-2010 |
20100073266 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - The present invention provides a display device and a method of driving the same. The display device includes: a light-emitting device; a first capacitor connected between a first contact point and a second contact point; a driving transistor including an input terminal connected to a first voltage, an output terminal, and a control terminal connected to the second contact point; a first switching transistor controlled by a first control signal and connected between a data voltage and the first contact point; a second switching transistor controlled by a second control signal and connected between a second voltage and the first contact point; a third switching transistor controlled by a third control signal and connected between the second contact point and the second voltage; a fourth switching transistor controlled by the first control signal and connected between the second contact point and the output terminal of the driving transistor; and a fifth switching transistor controlled by the second control signal and connected between the light-emitting device and the output terminal of the driving transistor. | 03-25-2010 |
20100073267 | Image display device - Disclosed herewith an image display device capable of displaying high quality images and preferred for reducing the manufacturing cost. The image display device is provided with illuminating state controlling state for controlling the illuminating state or non-illuminating state and constant voltage supply for supplying a constant voltage to each pixel through a signal line when the illuminating state is selected for the pixel. | 03-25-2010 |
20100073268 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND PATTERNING METHOD - An organic electroluminescent display device includes a driving TFT and pixels which are formed by organic electroluminescent elements and provided in a pattern on a substrate of the TFT. The driving TFT includes at least a substrate, a gate electrode, a gate insulating film, an active layer, a source electrode, and a drain electrode; the driving TFT further includes a resistive layer between the active layer and at least one of the source electrode and the drain electrode; and the pixels are formed in a pattern by a laser transfer method. A patterning method by a laser transfer method for producing the fine pixels is also provided. | 03-25-2010 |
20100079360 | Medical Devices Using Bistable Displays - The invention relates to a novel display system for a drug delivery device that reduces power consumption and permits the user of the device to see messages when the device is not in a powered state or when the device has encountered an error condition. By using a bistable display, the medical device is able to maintain messages that can been seen by the user even when the device's power supply is exhausted or when the device has encountered an error that interrupts its normal operation. The use of such a display also improves the battery life by eliminating the need to provide power to the display screen when it is not being updated. | 04-01-2010 |
20100085279 | INTERACTIVE DISPLAY BRACELET - A bracelet worn by a user displays images, including direct advertisements, received from a remote device. Structurally, the bracelet forms a circumference about a void for receiving the user's wrist. Further, the bracelet includes a wireless communication receiver for receiving signals from the remote device. Also, the bracelet includes a display element positioned along the circumference for displaying images defined by the signals. Typically, the display element will comprise light-emitting diodes (LEDs), organic light-emitting diodes (OLEDs), liquid crystal display (LCD) panels, and/or fiber optics. | 04-08-2010 |
20100085280 | Display system and method therefor - A display system and method thereof are provided, wherein the system includes a display device configured to produce a display and a controller in communication with the display device. The display device includes a first portion and a second portion. The controller updates the first portion of the display device at a higher rate than the second portion of the display device. | 04-08-2010 |
20100085281 | ELECTRO-OPTICAL DEVICE, ELECTRONIC APPARATUS, AND PROJECTION DISPLAY - An electro-optical device includes an element substrate having a first signal line; a second signal line extending in a second direction crossing the first signal line; a first field-effect transistor including a first semiconductor layer extending in a direction crossing the second direction; a second field-effect transistor including a second semiconductor layer extending in the direction crossing the second direction; a first pixel electrode is adjacent to a second pixel electrode. The first semiconductor layer and the second semiconductor layer are displaced from each other in the second direction. An end of the first semiconductor layer facing toward the second pixel electrode is closer to the second pixel electrode than an end of the second semiconductor layer facing toward the first pixel electrode. | 04-08-2010 |
20100085282 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode (OLED) display is disclosed. The OLED display includes a display panel including a plurality of pairs of data lines, a plurality of gate line groups crossing the pairs of data lines, and a plurality of pixels each having a drive thin film transistor (TFT) and an organic light emitting diode at each of crossings of the pairs of data lines and the gate line groups, a timing controller generating a non-overlap signal, and a sample and hold block that removes an overlap period between adjacently generated first holding clocks using the non-overlap signal to generate second holding clocks that do not overlap each other, applies sampled threshold voltages of the drive TFTs of the pixels to an output node in response to the second holding clocks, and discharges the output node in the overlap period in response to the non-overlap signal. | 04-08-2010 |
20100085283 | Light-Emitting Device and Electric Appliance - An inexpensive light emitting device capable of displaying a bright image and an electric appliance using the light emitting device. In the light emitting device having a pixel portion and a driver circuit formed on one insulating member, all of semiconductor elements for the pixel portion and the driver circuit are formed by n-channel semiconductor elements, thereby enabling the manufacturing process to be simplified. Each of light-emitting elements provided in the pixel portion emits light in such a direction that most of the light travels away from the insulating member, so that substantially the whole of the pixel-forming segment electrode (corresponding to a cathode of an EL element) is formed as an effective light-emitting area. Therefore, a low-priced light-emitting device capable of displaying a bright image can be obtained. | 04-08-2010 |
20100090931 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A display device formed by arranging pixel circuits in a matrix, wherein each pixel circuit includes a self-emissive element; a drive transistor for driving the self-emissive element; and a resistor element serially connected between the self-emissive element and the drive transistor. | 04-15-2010 |
20100090932 | ORGANIC LIGHT EMITTING DIODE DISPLAY - Embodiments of the invention provide an organic light emitting diode (OLED) display capable of preventing a defect of picture quality by instability of an output voltage of a power IC in a low temperature environment. The OLED display comprises: a display panel having an effective display area in which pixels displaying a gray scale are formed and a non-display area in which a pixel monitoring part monitoring a degree of deterioration of the pixels is formed, wherein each of the pixels includes an organic light emitting diode and a driving element; a power IC supplying a driving voltage to the display panel; and a voltage limiting part connected between the pixel monitoring part and the power IC to restrict voltage levels of feedback voltages supplied from the pixel monitoring part. | 04-15-2010 |
20100090933 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A bank for defining the regions in which pixels are formed has a stacked structure including: a base layer on the low level which also serves as an interlayer insulating film between the pixel forming regions; a middle bank layer on the middle level which serves to improve the fixation of an organic compound material (i.e., improve the uniformity of the film thickness of a positive hole transporting layer and an electron-transporting light emitting layer) in forming an organic EL layer; and a bank metal layer on the upper level which is made of a conductive material and serves also as a common voltage line (cathode line). | 04-15-2010 |
20100097302 | ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes a display unit including a plurality of pixels coupled to scan lines and data lines, a data driver for applying data signals to the data lines, a black data inserting unit between the display unit and the data driver for applying black data to the display unit, the black data being applied between periods in which the data signals are applied, and a timing controller for controlling the data driver and the black data inserting unit. | 04-22-2010 |
20100103082 | ELECTROLUMINESCENT DISPLAY WITH INITIAL NONUNIFORMITY COMPENSATION - A method of compensating for differences in characteristics of a plurality of electroluminescent (EL) subpixels having readout transistors, includes providing a first voltage source connected through a first switch to each subpixel's drive transistor and a second voltage source connected through a second switch to each subpixel's EL emitter; providing a current source connected through a third switch, and a current sink connected through a fourth switch, to the readout transistor; providing a test voltage to a subpixel; closing only the first and fourth switches and measuring the readout transistor voltage to provide a first signal representative of characteristics of the drive transistor; closing only the second and third switches and measuring the voltage to provide a second signal representative of characteristics of the EL emitter; repeating for each subpixel; and using the first and second signals for each subpixel to compensate for differences in characteristics of the EL subpixels. | 04-29-2010 |
20100103083 | ORGANIC LIGHT EMITTING DEVICE, AND APPARATUS AND METHOD OF GENERATING MODIFICATION INFORMATION THEREFOR - An organic light emitting device including a display panel including a plurality of pixels respectively including a driving transistor and an organic light emitting element; a driving unit to supply a driving signal to the display panel; a signal controller to control the driving unit; a signal modification unit to modify an input image signal based on modification information to generate a modified image signal; and a modification controller to generate and provide the modification information to the signal modification unit. The signal modification unit includes a first modification unit to convert the input image signal into a first modified signal according to first modification information generated based on a characteristic deviation of the driving transistor, and a second modification unit to convert the first modified signal into a second modified signal according to second modification information generated based on a characteristic deviation of the organic light emitting element. | 04-29-2010 |
20100109985 | IMAGE DISPLAY DEVICE - An image display device in which a plurality of pixel circuits are arranged has a current light-emitting element, a driver transistor for flowing current in the current light-emitting element, a retention capacitor for retaining a voltage determining an amount of current flowed from the driver transistor, and a writing switch for writing a voltage depending on an image signal to the retention capacitor. Transistors configuring the respective pixel circuits are an N-channel type transistor, each of the pixel circuits further includes an enable switch, an initialization capacitor for initializing the voltage of the retention capacitor, and a separation switch. | 05-06-2010 |
20100117935 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode (OLED) display is disclosed. The OLED display includes a display panel, a gate drive circuit, a data converter that divides video data corresponding to 1 frame into a plurality of bit-planes each having a different bitrate, maps bit-planes having a relatively large value of assigned time to first subfields, and maps bit-planes having a relatively small value of assigned time to second subfields arranged between the first subfields, so that time assigned values of successively arranged subfields have a zigzag pattern and a last subfield of the successively arranged subfields has a maximum time assigned value, and a data drive circuit. | 05-13-2010 |
20100117936 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display device and a method of manufacturing the same are disclosed. The organic light emitting display device includes a substrate on which first, second and third pixel units are arranged in row and column directions. To simplify manufacturing and reduce defects, the first, second and third pixel units are arranged so that each column of the display is formed of only one of the first, second, and third pixel units. | 05-13-2010 |
20100117937 | ORGANIC ELECTRO-LUMINESCENT DISPLAY DEVICE - An OLED device is disclosed. The OLED device disposes a voltage divider and a switch unit in the output stage of a power supplier, thereby lowering the level of a supply voltage VDD, which is applied to a driver IC in an emission interval, below that of the supply voltage which is applied to the driver IC in a non-emission interval. Accordingly, the OLED device can reduce electric power consumption. | 05-13-2010 |
20100117938 | Pixel circuit, display device, and electroinc appliance - A pixel circuit provided on a substrate on which a signal line, first and second scanning lines supplying first and second control pulse signals, a fixed power line, and a variable power line are arranged includes a capacitance element, a sampling transistor connected between the signal line and one of ends of the capacitance element, where the gate of the sampling transistor is connected to the first scanning line, a drive transistor of which gate is connected to the other end, where one of a drain and a source of the drive transistor is connected to the fixed power line, an initializing transistor of which gate is connected to the second scanning line, which is connected between the other end and the other of the drain and the source, and a light emitting element connected between the variable power line and the other of the drain and the source. | 05-13-2010 |
20100117939 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes a display unit including a plurality of data lines, a plurality of scan lines, and pixels at crossing regions of the data lines and scan lines, wherein the plurality of data lines are arranged into a plurality of groups; a data driver for supplying data signals to the data lines; a first demultiplexer at a first side of the display unit for associating the groups to first corresponding output channels of the data driver, and for coupling the output channels to the data lines in the first corresponding groups in accordance with control signals; a second demultiplexer at a second side of the display unit opposite the first side for associating the groups to second corresponding output channels of the data driver, and for coupling the output channels to the data lines in the second corresponding groups in accordance with the control signals. | 05-13-2010 |
20100123648 | TONESCALE COMPRESSION FOR ELECTROLUMINESCENT DISPLAY - A method for controlling an electroluminescent display to produce an image for display that has reduced luminance to reduce burn-in on the display while maintaining visible contrast, includes providing the electroluminescent (EL) display having a plurality of EL emitters, the luminance of the light produced by each EL emitter being responsive to a respective drive signal; receiving a respective input image signal for each EL emitter; and transforming the input image signals to a plurality of drive signals that have a reduced peak frame luminance value but maintains contrast in the displayed image to reduce burn-in by adjusting the drive signals to have reduced luminance provided by each pixel with the luminance decrease in a shadow range being less than the luminance decrease in a non-shadow range. | 05-20-2010 |
20100123649 | COMPENSATED DRIVE SIGNAL FOR ELECTROLUMINESCENT DISPLAY - Compensation is performed for initial nonuniformity or aging of drive transistors and electroluminescent (EL) emitters in 3T1C EL subpixels of an EL display, such as an organic light-emitting diode (OLED) display. A readout transistor connected to the EL emitter is used to readout the voltage of the emitter and compensation for ΔV | 05-20-2010 |
20100123650 | Portable Electronic Device - A portable electronic device used for connecting to a remote server includes an identification module, a signal transceiver module, an electro-phoretic display (EPD) and a power supply module. The signal transceiver module is used for transmitting an identified data received by the identification module to the remote server and receiving a data signal from the remote server. The EPD is used for displaying the data signal received by the signal transceiver module. The power supply module is electrically connected to the identification module, the signal transceiver module and the EPD for supplying power to them. The portable electronic device may connect to different financial locations according to user choices, so the latest financial information of user may be provided by the portable electronic device. | 05-20-2010 |
20100127955 | Pixel and organic light emitting display device using the same - A pixel includes an organic light emitting diode, a first transistor configured to control a connection between a first power source and the organic light emitting diode, a second transistor configured to control a connection between a reference power source and the gate electrode of the first transistor, a third transistor, a fourth transistor, and a fifth transistor connected such that, when the third transistor, the fourth transistor, and the fifth transistor are all turned on, a data line is coupled to an anode electrode of the organic light emitting diode; and a storage capacitor having a first electrode coupled to the gate electrode of the first transistor and having a second electrode coupled to a common node between the third and fifth transistors, wherein the fourth transistor is configured to drop a voltage of a data signal on the data line by a threshold voltage of the fourth transistor. | 05-27-2010 |
20100127956 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - An organic light emitting display device includes a scan driver for sequentially supplying a scan signal through scan lines; a data driver for supplying an initial power through data lines during a first period of a time period when the scan signal is supplied through a corresponding scan line of the scan lines, and for supplying data signals to the data lines during a second period of the time period when the scan signal is supplied through the corresponding scan line, the second period following the first period; and pixels at crossing regions of the scan lines and the data lines. | 05-27-2010 |
20100134388 | DISPLAY DEVICE AND PIXEL CIRCUIT - To efficiently compensate a threshold value of a driving transistor. In a state where a first switching transistor is non-conductive and a second switching transistor in conductive, a sampling transistor is made conductive and a reference voltage is supplied from a signal line to write a threshold voltage of a driving transistor to a first capacitance. After that, in a state where first and second switching transistors and are non-conductive, the sampling transistor is made conductive and a signal voltage from the signal line is written to the first capacitance. Further, after that the sampling transistor is put into a non-conductive state, and the first and second switching transistors are put in a conductive state, to drive the driving transistor and supply current to a light emitting element | 06-03-2010 |
20100141564 | Pixel and organic light emitting display device using the same - A pixel includes an organic light emitting diode, a second transistor configured to control a connection between a first power source and the organic light emitting diode, the second transistor having a gate electrode, a first transistor configured to control a connection between the gate electrode of the second transistor and a data line, the first transistor having a gate electrode coupled to a scan line, a third transistor configured to control a connection between the organic light emitting diode and a second electrode of the second transistor, the third transistor having a gate electrode coupled to a light emitting control line, a first capacitor having a first electrode coupled to the gate electrode of the second transistor and having a second electrode coupled to a first electrode of the second transistor, and a second capacitor having a first electrode coupled to the gate electrode of the second transistor. | 06-10-2010 |
20100141565 | CONTROL HEAD WITH ELECTROLUMINESCENT PANEL IN LAND MOBILE RADIO - An exemplary land mobile radio control head and method are provided. In one embodiment, the control head has the capability to utilize halo light of the control head to implement a multi-function indicator that communicates a state of the land mobile radio. In another embodiment, the control head has the capability to provide buffer images constructed from data received from the land mobile radio into a video stream for rendering on an electroluminescent display. In another embodiment, the control head provides the capability for a user to modify a configuration stored on the land mobile radio that defines one of several display modes to be utilized in generating data for use in forming images to be rendered on an electroluminescent display. | 06-10-2010 |
20100149077 | IMAGE DISPLAY PANEL, IMAGE DISPLAY DEVICE, AND MANUFACTURING METHOD OF THE IMAGE DISPLAY PANEL - An image display panel includes: a lower substrate; self-light emitting elements for image display that are arranged on the lower substrate in a matrix shape and form an image display unit; a self-light emitting element for monitoring that is arranged on the lower substrate and emits monitoring light for the image display unit; and an upper substrate that holds the self-light emitting elements for image display and the self-light emitting element for monitoring in conjunction with the lower substrate, wherein the self-light emitting elements for image display emit emission light to the lower substrate side or the upper substrate side, and the self-light emitting element for monitoring emits the monitoring light to at least the upper substrate side or the lower substrate side. | 06-17-2010 |
20100156761 | EDGE EMISSIVE DISPLAY DEVICE - A display device includes a plurality of Y display slices, each display slice having electronic structures, which include a one-dimensional array of X adjacent pixels that emit light from a face edge of the display slice in response to electrical power. The display slices are assembled in a layered arrangement to form an emissive face. Also included are control electrodes, power electrodes, data electrodes, and a connection structure for each display slice. Each connection structure connects at least (a) each of a plurality of groups of the corresponding display slice's pixels to a separate one of the control electrodes, (b) one or more of the power electrodes to at least one of the corresponding display slice's electronic structures, and (c) one or more of the data electrodes to at least one of the corresponding display slice's electronic structures. | 06-24-2010 |
20100156762 | Organic light emitting display device - An organic light emitting display (OLED) device capable of compensating for threshold voltage of a driving transistor in which this OLED device uses a scan driver to sequentially supply scan signals to scan lines. A data driver supplies data signals to data lines when the scan signals are supplied with pixels positioned at the intersections of the scan lines and the data lines. A common circuit unit formed in every horizontal line, receiving one or more external power sources required in driving the pixels and transferring the received external power to pixels positioned in the same horizontal lines. | 06-24-2010 |
20100156763 | Organic electroluminescent display device including heat-radiating means - An organic electroluminescent display device includes an organic electroluminescent display (OLED) panel having a first surface for displaying images and a second surface opposite to the first surface, a thermal pad attached to the second surface, a heat sink attached to the thermal pad such that the thermal pad is disposed between the OLED panel and the heat sink, a bottom case spaced apart from the heat sink and protecting the second surface of the OLED panel, the bottom case formed of a metallic material, and a top case covering edges of the first surface of the OLED panel and combined with the bottom case, wherein a plurality of heat-radiating pins are formed on a surface of the heat sink facing the bottom case. | 06-24-2010 |
20100171685 | DISPLAY DEVICE - To provide a high-performance and highly reliable display device with a high aperture ratio, including light-emitting elements, and a manufacturing method thereof, and a technique for manufacturing such a display device at a low cost with high productivity. A compensating circuit, a light-emitting element, a switch, and a transistor are included, in which one terminal of the switch is electrically connected to the compensating circuit, a gate of the transistor is electrically connected to the compensating circuit, one of a source and a drain of the transistor is electrically connected to a first electrode of the light-emitting element, the other of the source and the drain of the transistor is maintained at a certain potential, and a second electrode of the light-emitting element and the other terminal of the switch are electrically connected to the same wire. | 07-08-2010 |
20100177023 | SHIFT REGISTER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A shift register is disclosed. In one aspect, the shift register has a plurality of stages dependently coupled to an input line of a start pulse and is driven by first, second and third clock signals respectively input to first, second and third input lines. The shift register includes first and second voltage stabilizer circuits to prevent leakage currents. | 07-15-2010 |
20100177024 | Organic light emitting display - An organic light emitting display, includes scan lines and data lines that overlap each other, a pixel unit including pixels positioned at intersections of the scan lines and the data lines, a main power source line at one end of the pixel unit and adapted to receive a voltage of a first power source, and sub power source lines coupled to the main power source line and the pixels, wherein each of the pixels comprises at least one capacitor, and the capacitors have different capacitances based on a position of the respective pixels relative to the main power source line. | 07-15-2010 |
20100177025 | INFORMATION DISPLAY DEVICE - An information display device ( | 07-15-2010 |
20100182222 | LIGHT-EMITTING DEVICE, DISPLAY APPARATUS AND LIGHTING APPARATUS EACH INCLUDING LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD OF LIGHT-EMITTING DEVICE - A light-emitter includes a first electrode layer, a second electrode layer, and a light-emitting layer located between the first and second electrode layers. A gradient index lens is located proximate to the second electrode layer opposite the light-emitting layer and comprises a plurality of concentric parts. The concentric parts are grouped into a central zone and annular zones. Each annular zone includes at least two of the concentric parts. One of the concentric parts included in each annular zone has a refractive index different from a refractive index of another of the concentric parts. A wavelength of light emitted from the light-emitting layer is greater than a radius of the central zone and a width of each annular zone. An effective refractive index of each annular zone decreases in an outward direction from a center of the gradient index lens. | 07-22-2010 |
20100182223 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device that includes a plurality of signal lines and a plurality of scan lines, a plurality of pixels arranged at intersections of ones of the plurality of signal lines and ones of the plurality of scan lines, a scan driver to supply scan signals to the plurality of scan lines, the scan driver including a first plurality of thin film transistors and a data driver to supply data signals to the plurality of signal lines, the data driver including a second plurality of thin film transistors, wherein each of said plurality of pixels includes a first thin film transistor, a second thin film transistor and an organic light emitting diode, the first transistor being connected to the organic light emitting diode, the first transistor having an active layer made out of an oxide semiconductor, the second transistor, the first plurality of thin film transistors and the second plurality of thin film transistors each having an active layer made out of poly-silicon. | 07-22-2010 |
20100188316 | EMISSION CONTROL DRIVER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - An emission control driver includes a plurality of stages, each of the plurality of stages including a first driver for outputting a first output signal corresponding to one of the first output signal output from a previous stage or a first start pulse; a second driver for outputting a second output signal corresponding to one of the second output signal output from the previous stage or a second start pulse; and a third driver for receiving the first and second output signals and for outputting an emission control signal. | 07-29-2010 |
20100188317 | Reflective type display apparatus using dielectrophoresis and method of manufacturing the reflective type display apparatus - Example embodiments relate to a reflective type display apparatus using dielectrophoresis and a method of manufacturing the reflective type display apparatus. The display apparatus may include a first substrate and a second substrate arranged so as to face each other; a hydrophobic insulating layer formed on the first substrate; a hydrophobic pattern electrode unit arranged to form a non-uniform electric field; a hydrophilic dielectric medium with hydrophobic uncharged particles therein in a space between the first substrate and the second substrate; and a reflective plate arranged under the first substrate. The display apparatus may form an image by using dielectrophoresis of the hydrophobic uncharged particles according to an electric field gradient formed by the hydrophobic pattern electrode unit. | 07-29-2010 |
20100188318 | DISPLAY DEVICE - A display device includes: a display section including a plurality of pixels which emit light in an amount varied depending on an amount of current; signal lines for inputting a display signal voltage to the plurality of pixels; a switch circuit for switching between the signal lines to output signals corresponding to pixel states of the plurality of pixels, the pixel states being obtained through a supply of a detection-use power source to the plurality of pixels; and an A/D conversion section which includes a circuit for changing a reference voltage, and which sequentially detects signals corresponding to pixel states of pixels in each of a plurality of blocks which are obtained by dividing pixels in a horizontal line of the display section. The deteriorated pixels, which is accompanied by an in-plane gradient and fluctuations of the display section, are compensated without increasing a scale of a detection circuit. | 07-29-2010 |
20100194670 | OLED Display System Compensating for Changes Therein - A method of compensating an OLED display device having light-emitting elements that change with use, comprising the steps of: a) using the device to display images; b) sequentially displaying an ordered series of calibration images, wherein each of the calibration images have one or more corresponding flat fields, at least one of the corresponding flat fields of each calibration image of the ordered series has a different luminance value, and the calibration images are arranged in the ordered series so as to reduce perceived luminance discontinuities; c) measuring and recording current used by the display for each sequentially displayed calibration image; d) calculating compensation parameters based on the measured currents; e) compensating an input image using the compensation parameters; and f) displaying the compensated input image. | 08-05-2010 |
20100201609 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE - An organic light emitting diode (OLED) display device including a first substrate, OLEDs disposed on the first substrate, a second substrate facing the first substrate, and reflective layers disposed on the encapsulation substrate. The reflective layers are offset with respect to the OLEDs, so that the OLED display device can be used as a mirror when the display device does not display an image. | 08-12-2010 |
20100207848 | CHIPLET DISPLAY DEVICE WITH SERIAL CONTROL - A display device, including a substrate; an array of pixels arranged in rows and columns forming a light-emitting area over the substrate, each pixel including a first electrode, one or more layers of light-emitting material located over the first electrode, and a second electrode located over the one or more layers of light-emitting material; a first serial buss having a plurality of electrical conductors, each electrical conductor connecting one chiplet in a first set of chiplets to only one other chiplet in the first set in a serial connection, the chiplets being distributed over the substrate in the light-emitting area, each chiplet including one or more store-and-forward circuits for storing and transferring data connected to its corresponding electrical conductor; and a driver circuit in each chiplet for driving at least one pixel in response to data stored in the store-and-forward circuit. | 08-19-2010 |
20100220038 | Pixel and Organic Light Emitting Display Device Including the Same - A pixel includes: an organic light emitting diode coupled between a first power supply and a second power supply; a first transistor coupled between the organic light emitting diode and the second power supply; a second transistor coupled to a first node to which a gate electrode of the first transistor is coupled; a first capacitor coupled between the first node and a second node; a third transistor coupled between the second node and a data line; a fourth transistor coupled between the first node and the second node; a fifth transistor coupled between the first transistor and the second power supply; and a second capacitor coupled between the second node and a third node between the first transistor and the fifth transistor. | 09-02-2010 |
20100220039 | DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A DC-DC converter generates a first power and a second power for driving pixels in an organic light emitting display, such that the voltages of the first power and the second power are substantially independent of the voltage from a power supply or a battery. A voltage detector detects the voltage from the power supply, and a booster circuit and an inverter circuit respectively boost and invert the voltage from the power supply to generate and output the first and the second powers, respectively, for the pixels. A PWM controller controls the booster circuit and the inverter circuit to control voltages of the first power and the second power. The booster circuit is adapted to reduce the voltage from the power supply to be lower than the voltage of the first power when the voltage from the power supply detected by the voltage detector is higher than a reference voltage. | 09-02-2010 |
20100220040 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes an organic light emitting diode (OLED) having a cathode electrode coupled to a second power source, a second transistor coupled to a data line and a first scan line, a first transistor coupled between a second electrode of the second transistor and an anode electrode of the OLED, a third transistor coupled between a gate electrode and a second electrode of the first transistor, a fourth transistor coupled between the gate electrode of the first transistor and an initialization power source, a fifth transistor coupled between a first electrode of the first transistor and a first power source, a first capacitor coupled between the gate electrode of the first transistor and the first power source, and a second capacitor coupled between the gate electrode and the first electrode of the first transistor. | 09-02-2010 |
20100231487 | LIGHT-EMITTING DEVICE AND DISPLAY - This light-emitting device includes a first electrode, a second electrode disposed opposite to the first electrode and a phosphor layer which is sandwiched between the first electrode and the second electrode and constituted by dispersing n-type semiconductor particles in a p-type semiconductor medium. A light-emitting device in another embodiment includes a first electrode, a second electrode disposed opposite to the first electrode and a phosphor layer which is sandwiched between the first electrode and the second electrode wherein a p-type semiconductor is segregated among the n-type semiconductor particles. | 09-16-2010 |
20100231488 | METHOD FOR OPERATING ELECTROPHORETIC DISPLAY APPARATUS, ELECTROPHORETIC DISPLAY APPARATUS, AND ELECTRONIC SYSTEM - There is provided a method for operating an electrophoretic display apparatus including a first substrate; a second substrate; an electrophoretic device being held between the first substrate and the second substrate and containing electrophoretic particles; a first electrode formed on a surface of the first substrate, the surface facing the electrophoretic device; an insulation layer formed between the first electrode and the electrophoretic device; and a second electrode formed on a surface of the second substrate, the surface facing the electrophoretic device. The method includes: (a) driving the electrophoretic device by inputting a first potential to the first electrode and inputting a second potential to the second electrode, and (b) recovering a potential of the second electrode by changing the potential of the second electrode, from the second potential to the first potential, at a constant rate such that a voltage applied to the electrophoretic device is made equal to or smaller than a threshold voltage of the electrophoretic device, wherein (b) is performed after (a) and before next (a). | 09-16-2010 |
20100238092 | SCANNER, ELECTRO-OPTICAL PANEL, ELECTRO-OPTICAL DISPLAY DEVICE AND ELECTRONIC APPARATUS - A scanner includes a plurality of unit circuits configured with transistors of a same conductivity type. In the scanner, the unit circuit constituting the scanner includes an output transistor that selectively outputs, to an output terminal of the unit circuit, a signal given from an outside. A gate electrode of the output transistor is connected to one end of a voltage limiting transistor, and a gate electrode of the voltage limiting transistor is supplied with a first power supply potential. | 09-23-2010 |
20100245216 | Display panel and display device - A display panel includes: a plurality of pixel circuits formed in a matrix on a substrate; an insulating layer covering the plurality of pixel circuits; a plurality of light emitting elements connected to the plurality of pixel circuits, and arranged in a matrix on the insulating layer; a filtering layer including a light transmitting section at least in a part of a region facing the light emitting element and a light shielding section formed in a same plane as the light transmitting section, and formed on an opposite side from the pixel circuit in relation to the light emitting element; a light reflecting section formed in a region facing the light shielding section, and between the light emitting element and the filtering layer; and a light receiving element formed in a region facing the light shielding section, and on the pixel circuit side in relation to the light emitting element. | 09-30-2010 |
20100253607 | ORGANIC ELECTROLUMINESCENCE DISPLAY APPARATUS - Provided is an organic electroluminescence display apparatus including: a substrate; a polarizing plate disposed on a display surface side being an opposite side of the substrate; a thin film transistor; and a planarization layer for reducing an irregular form corresponding to a circuit pattern of the thin film transistor, the planarization layer including a pixel electrode and an organic electroluminescence device and including at least two layers, a thickness of each of the planarization layers being set to be smaller than a maximum height of irregularities resulting from the thin film transistor, each of the planarization layers including a contact hole provided at a distinct planar position and a connection wiring layer capable of electrically connecting the thin film transistor and the pixel electrode via the contact hole, and a tapered portion of the planarization layer closest to the organic electroluminescence device having 30 degrees or less. | 10-07-2010 |
20100253608 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A display device displays an image having a substantially uniform brightness by compensating for variations of the threshold voltages of driving transistors and compensating for the deterioration of an organic light emitting diode. A pixel includes an organic light emitting diode, two transistors, a storage capacitor, and a compensation unit. A driving transistor supplies a current to an OLED corresponding to the voltage in the storage capacitor. The compensation unit controls a voltage of a gate electrode of the driving transistor corresponding to a deterioration of the organic light emitting diode, and couples one electrode of the driving transistor to the data line during a compensation period, during which a threshold voltage of the driving transistor is compensated. | 10-07-2010 |
20100253609 | IMAGE DISPLAY APPARATUS - According to one embodiment, an image display apparatus includes a plurality of pixels. Each pixel has a light emitting device; a drive transistor electrically connected to the light emitting device; and a capacitor electrically connected to the drive transistor. A ratio of an area occupied by the drive transistor per one pixel to an area of the one pixel is equal to or more than 0.05. | 10-07-2010 |
20100259467 | DISPLAY PANEL AND SYSTEM FOR DISPLAYING IMAGES UTILIZING THE SAME - An embodiment of the invention provides a display panel, which includes a substrate having a pixel region and a peripheral region, a control element overlying the pixel region of the substrate, a conducting layer overlying the substrate in the peripheral region, a first insulating layer overlying the conducting layer in the peripheral region, wherein a ratio between an area of the first insulating layer and an area of the conducting layer in the peripheral region is between about 0.27 and 0.99, a lower electrode layer overlying the first insulating layer, and a second insulating layer overlying the lower electrode layer. | 10-14-2010 |
20100265165 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device capable of improving image quality on a large panel. The organic light emitting display device includes a panel divided into at least two regions including a first region crystallized by a first crystallization process and a second region crystallized by a second crystallization process, in which a boundary part of the first and second regions is subject to both the first crystallization process and the second crystallization process, and further includes: organic light emitting diodes at crossing regions of scan lines and data lines; and pixel circuits at the crossing regions and configured to supply currents to the organic light emitting diodes. Here, couplings between the pixel circuits within the first region and the boundary part and their respective organic light emitting diodes are different from couplings between the pixel circuits within the second region and their respective organic light emitting diodes. | 10-21-2010 |
20100265166 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE PIXEL - A pixel includes an organic light emitting diode; a first transistor; a second transistor coupled to a data line and turned on when a scan signal is supplied to an i | 10-21-2010 |
20100271292 | Display with improved electromagnetic compatibility characteristics - Disclosed herein is an apparatus. The apparatus includes a display module having a base member, an emissive component, and a flexible circuit. The flexible circuit includes a first end and an opposite second end. The base member is proximate the first end. The emissive component is mounted on the second end. The second end of the flexible circuit is disposed between the base member and the emissive component. | 10-28-2010 |
20100271293 | ELECTRO-OPTICAL APPARATUS, MANUFACTURING METHOD THEREOF, AND ELECTRONIC DEVICE - An electro-optical apparatus includes a substrate and multiple pixels formed upon the substrate. The substrate is formed by interleaving multiple strip-shaped tape members configured of a resin. | 10-28-2010 |
20100277400 | CORRECTION OF AGING IN AMOLED DISPLAY - The data line voltage on the data line of the AMOLED sub-pixels is measured while the OLED is being driven by a reference current, in order to determine the age of the OLED in the sub-pixel. The pixel transistor serves as a current source for driving the OLED in the sub-pixel with the reference current. The data line voltage is substantially equal to the forward voltage VF(aged) of the aged OLED being driven at the reference current. The forward voltage VF (un-aged) of a reference (un-aged) OLED sub-pixel also measured at the reference current, and is subtracted from the measured OLED diode forward voltage VF (aged) to obtain their difference ΔVF=VF(aged)−VF(un-aged). ΔVF is an indicator of the age of the OLED in the sub-pixel, and is used as an index to a look-up-table that stores the corresponding aging offset data for generating the incremental pixel current needed to maintain constant luminance in the aged OLED pixel. | 11-04-2010 |
20100277401 | EL DISPLAY PANEL DRIVING METHOD - In order to charge and discharge parasitic capacitance of a source signal line sufficiently and program a predetermined current value into a pixel transistor, it is necessary to output a relatively large current from the source driver circuit. However, if such a large current is passed through the source signal line, the value of this current is programmed into the pixel, causing a larger than desired current to flow through an EL element. For example, if a 10 times larger current is used for programming, a 10 times larger current flows through the EL element, and thus the EL element illuminates 10 times more brightly. To obtain predetermined emission brightness, the time during which the current flows through the EL element can be reduced to 1/10 of one frame (1 F). This way, the parasitic capacitance of the source signal line can be charged and discharged sufficiently and the predetermined emission brightness can be obtained. | 11-04-2010 |
20100277402 | ELECTRO-OPTICAL DEVICE, METHOD OF DRIVING THE SAME, AND ELECTRONIC APPARATUS - An aspect of the present invention provides an electro-optical device including a plurality of scanning lines, a plurality of data lines, a plurality of power lines extending in a direction intersecting with the plurality of data lines, and a plurality of pixel circuits provided corresponding to intersections of the plurality of scanning lines and the plurality of data lines, wherein pixel circuits of the plurality of pixel circuits provided adjacent to each other along one of the plurality of data lines is coupled to one of the plurality of power lines. | 11-04-2010 |
20100283713 | FOLDABLE PORTABLE DISPLAY - Techniques are generally described for a system, method and apparatus that provides a foldable portable display, such as may be used in conjunction with a handheld or other portable electronic device. The display screen may be folded and/or retracted into a smaller form factor for easy concealment and/or stowage. When in use, the display may be extended into a larger size and shape than the case for the device. | 11-11-2010 |
20100289727 | ELECTRO-LUMINESCENT DISPLAY WITH ADJUSTABLE WHITE POINT - The present invention provides an EL display adapted to receive a three-color input image signal, including three gamut-defining EL emitters for emitting red, green, and blue colored light and two additional EL emitters for emitting at least two additional colors of light, the chromaticity coordinates of the at least two additional colors of light lying inside the gamut and near the Plankian Locus; a structure for providing a display white point; and a controller responsive, to the provided display white point and the input image signal for providing first separate drive signals for the three gamut-defining EL emitters and second separate drive signals for the two additional EL emitters, wherein the respective luminance values corresponding to the second separate drive signals are each a function of the input image signal and the distances between the display white point and the pseudo-blackbody points of the two additional colors. | 11-18-2010 |
20100289728 | ORGANIC EL DISPLAY PANEL AND MANUFACTURING METHOD THEREOF - Provided is a technique which easily forms a bank the inner lateral surface of which has a part (lower part of the inner lateral surface) made to be lyophilic. The technique provides an organic EL display panel containing a plurality of organic EL elements in which each organic EL element comprises a substrate, an anode disposed on the substrate, an organic light emitting layer disposed on the anode, a cathode disposed on the organic light emitting layer, and a forward-tapered bank which regulates the area of the organic light emitting layer. A lyophobic organic film is disposed on the upper surface of the bank and the surface of the upper part of the tapered portion of the bank but not disposed on the surface of the lower part of the tapered portion of the bank of the organic EL element. | 11-18-2010 |
20100289729 | SURFACE-EMISSION DISPLAY DEVICE - A flat panel display device includes a circuit board ( | 11-18-2010 |
20100289730 | FOLDING ELECTRONIC DEVICE WITH CONTINUOUS DISPLAY - In general, in one aspect, the disclosure describes an apparatus that includes two panels pivotally connected together. The panels can pivot from an open arrangement where the two panels lay side by side to a closed arrangement where the two panels lay one on top of another. The apparatus also includes a flexible display connected to the two panels and having a portion that is mechanically free from the two panels. The apparatus further includes a cavity to receive at least a portion of the free portion of the display when the panels are pivoted into the closed arrangement. | 11-18-2010 |
20100295758 | PIXEL CIRCUIT - To efficiently execute threshold value compensation for a driving transistor for an electroluminescent element. A first storage capacitor has a first terminal connected to a data line. A first terminal of a switching transistor and a first terminal of a reset transistor are connected to a second terminal of the first storage capacitor. The first storage capacitor is formed overlapping a data line. | 11-25-2010 |
20100295759 | ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE - A solid-sealed organic electroluminescence display device is provided with means of preventing the occurrence of a dark spot in the market, due to the degradation of an organic EL light emitting layer by water entering from a pinhole of a sealant. In order to prevent the degradation of the organic EL layer by water, a first inorganic film, an organic flattening film, and a second inorganic film are formed on an upper electrode. Water entering from the pinhole in the second inorganic film diffuses into the organic flattening film, and degrades the organic EL layer in several months, resulting in a defect in the market. In order to prevent this, a material capable of reacting with oxygen or water and exhibiting color is added to the organic flattening film. Then, the defective organic electroluminescence display device is picked up and eliminated prior to delivery to the market. | 11-25-2010 |
20100309100 | DISPLAY DEVICE WITH PARALLEL DATA DISTRIBUTION - A display device responsive to a controller, including a substrate having a display area; a two-dimensional array of pixels formed on the substrate in the display area, each pixel comprising an optical element and a driving circuit for controlling the optical element in response to selected pixel information; a two-dimensional array of selection circuits located in the display area, each associated with one or more pixels, for selecting pixel information provided by the controller, wherein each selection circuit receives the provided pixel information, selects pixel information corresponding to its associated pixel(s) in response to the provided pixel information, and provides the selected pixel information to the corresponding driving circuit(s); and a parallel signal conductor electrically connecting the selection circuits in common for transmitting pixel information provided by the controller to each of the selection circuits. | 12-09-2010 |
20100309101 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREFOR - A display device includes: a substrate; a pair of partition walls above the substrate; a light-emitting portion above the substrate that includes a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode, the second electrode and the light-emitting layer located between the pair of partition walls; and a pixel circuit for applying a voltage to the first electrode. Each of the pair of partition walls includes a conductive portion and an insulating portion that covers side surfaces of the conductive portion for insulating the first electrode and the light-emitting layer from the conductive portion. The second electrode covers an upper surface of the conductive portion of each of the pair of partition walls and is electrically connected to the pixel circuit via the conductive portion. | 12-09-2010 |
20100315318 | TOP EMISSION TYPE ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - An organic electroluminescent display (OELD) device includes a first substrate having a first unit pixel region including first and second pixel regions; first and second gate lines along a first direction; first and second data lines along a second direction; a switching TFT in the first pixel region; a driving TFT in the first pixel region; a passivation layer including a first contact hole exposing a portion of the driving TFT; a first electrode contacting the driving TFT through the first contact hole; a bank surrounding the second pixel region an organic emitting layer in the second pixel region; and a transparent second electrode on the organic emitting layer and the bank, wherein the second pixel region is a region shifted from the first pixel region such that the second gate line goes across the second pixel region. | 12-16-2010 |
20100321279 | Transistor, electronic device including a transistor and methods of manufacturing the same - Disclosed are a transistor, an electronic device and methods of manufacturing the same, the transistor including a photo relaxation layer between a channel layer and a gate insulating layer in order to suppress characteristic variations of the transistor due to light. The photo relaxation layer may be a layer of a material capable of suppressing variations in a threshold voltage of the transistor due to light. The photo relaxation layer may contain a metal oxide such as aluminum (Al) oxide. The channel layer may contain an oxide semiconductor. | 12-23-2010 |
20100321280 | Display - A display having a display plane comprising individual pixel elements is proposed. The display can be controlled pixel by pixel by way of an array comprising control elements, with a sensor plane comprising individual photo diodes, which can be read out line by line by way of a readout circuit, being provided, which is used to scan the surface of a flat object adjacent to the display. | 12-23-2010 |
20100328196 | PASSIVE-MATRIX CHIPLET DRIVERS FOR DISPLAYS - A passive-matrix display device having a plurality of chiplets, each chiplet associated with one or more independent column electrodes located in the display area, each chiplet electrically connected to and driving a separate subset of the independent column electrodes and electrically connected to and driving a subset of the row electrodes to cause the light-emitting material in each pixel to emit light, wherein each chiplet includes a serial luminance shift register for shifting pixel luminance values corresponding to each independent column electrode from one chiplet to another and a column driver for driving each of the independent column electrodes to which it is connected with the corresponding pixel luminance values; and wherein each chiplet further includes a row driver for driving each corresponding row electrode to which it is connected and a row control shift register for controlling the row drivers. | 12-30-2010 |
20110006972 | ORGANIC EL DISPLAY DEVICE - A solid-sealing type organic EL display device is provided that can prevent water permeation through a defect generated in a passivation film which covers an extraction line in a peripheral sealing region thereby making it possible to prevent deterioration of an organic EL layer. An extraction line that couples a wiring line in a display region with a terminal part passes a peripheral sealing region. The extraction line is covered with an inorganic passivation film in the peripheral sealing region. The extraction line has a first flexure part and a second flexure part in the peripheral sealing region thereby making it possible to prevent a void and a crack generated in the inorganic passivation film from penetrating the peripheral sealing region. Consequently it is possible to prevent water permeation from outside and to prevent the deterioration of the organic EL layer. | 01-13-2011 |
20110012816 | Organic light emitting diode display - An organic light emitting diode display including a plurality of pixel areas and a transparent area interposed between the plurality of pixel areas, the display includes a substrate member, thin film transistors and capacitor elements on the substrate member, the thin film transistor and the capacitor elements overlapping with the pixel areas, a gate line, a data line, and a common power supply line on the substrate member, the gate line, the data line, and the common power supply line overlapping with the pixel areas and the transparent area, and being connected to corresponding ones of the thin film transistors and/or the capacitor elements, and pixel electrodes on the substrate member, the pixel electrodes overlapping with all of the thin film transistors and capacitor elements, and with respective portions of the gate line, the data line, and the common power supply line that overlap with the pixel areas. | 01-20-2011 |
20110018787 | DISPLAY DEVICE - Provided is a display device including: a display region in which a plurality of pixels each including a light emitting element are arranged; a power supply unit provided outside the display region; a plurality of power supply lines connected to the power supply unit, for supplying power to the elements; and a light emission control unit ( | 01-27-2011 |
20110025584 | LIGHT-EMITTING DIODE HEADS-UP DISPLAY FOR A VEHICLE - A display system for a vehicle is provided. The vehicle comprises a windshield and the display system comprises a substantially transparent organic light-emitting diode (OLED) display coupled to the windshield, the OLED display adapted to display information to an operator of the vehicle, and a control device coupled to the OLED display, the control device adapted to operate the OLED display to present information to the operator of the vehicle. | 02-03-2011 |
20110025585 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME - A pixel including: an organic light emitting diode that is coupled between a first power supply and a second power supply; a first transistor that is coupled between the first power supply and the organic light emitting diode and whose gate is connected to a first node; a second transistor that is coupled between the first node and a data line and whose gate electrode is coupled to a scan line; and a storage capacitor whose first electrode is coupled to the first node and second electrode is coupled to the first power supply, wherein the storage capacitor includes: a semiconductor layer that is positioned on a different layer from that of the data line and that expands to a region where the semiconductor layer overlaps with the data line and constitutes the first electrode, a first dielectric layer that is formed on the semiconductor layer, a first conductive layer that is formed on the first dielectric layer and constitutes the second electrode, a second dielectric layer that is formed on the first conductive layer, and a second conductive layer that is formed on the second dielectric layer and constitutes the first electrode together with the semiconductor layer, the first conductive layer being positioned between the data line and the semiconductor layer in order to cover the upper part of the region where it overlaps with the data line of the semiconductor layer. | 02-03-2011 |
20110025586 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display is driven in a simultaneous (or concurrent) emission scheme. The organic light emitting display includes: a display unit including a plurality of pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the pixels through the control lines; and a power driver for applying a power at different levels to the pixels of the display unit during a plurality of periods of one frame. The control signals and the power are concurrently provided to the pixels included in the display unit. | 02-03-2011 |
20110032177 | Method for Making an Electronic Display Device Covered by a Protection Plate - The invention relates to a method for making an electronic display device ( | 02-10-2011 |
20110037683 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display includes a substrate main body, an organic light emitting diode including a first electrode, an organic emissive layer, and a second electrode sequentially arranged on the substrate main body, a selective reflection layer arranged on the organic light emitting diode, a phase retardation film arranged on the selective reflection layer, a first linear polarizing film arranged on the phase retardation film, a twisted nematic liquid crystal layer arranged on the first linear polarizing film, a liquid crystal driving electrode arranged on the twisted nematic liquid crystal layer and a second linear polarizing film arranged on the liquid crystal driving electrode. | 02-17-2011 |
20110037684 | SWITCH MATRIX AND DISPLAY MATRIX OF DISPLAY DEVICE - The invention provides a switch matrix and display matrix of a display device. The display matrix of a display device includes: a switch matrix including M×N MEMS switches, wherein M is the number of rows and N is the number of columns, and MEMS switches in each row are controlled by a corresponding row drive signal to output respective column data signals; and a pixel matrix including M×N pixel units each of which is coupled with a corresponding one of the M×N MEMS switches and displays in response to the column data signal output from the corresponding MEMS switch. The switch matrix can simplify pixel design and reduce layout area of each pixel. Moreover, conventional design needs special process to handle high voltage of source driver. This invention can realize a display device with one common process while source driver uses high voltage process conventionally. | 02-17-2011 |
20110050550 | Pixel driving circuit for light emitting display panel - A display panel has a plurality of OLED pixels arranged in rows and columns. The pixel driving circuit has two or more current paths through a plurality of switching elements for providing the necessary current to the OLEDs in a pixel. The control end of each switching element is connected to the control end of the other switching elements, but each switching element has a separate power source which can be separately adjustable. In some embodiments, in a pixel or sub-pixel, one switching element is located at one end and one switching element is located at the other end of a pixel length, and each pixel is adjacent to a first power source line and a second power source line along the pixel length for separately providing the electrical power to two switching elements. | 03-03-2011 |
20110057864 | Emission control driver and organic light emitting display using the same - An emission control driver including a plurality of stages, each including a first unit adapted to generate a first output signal at a first node thereof based on an input signal, a clock signal, a inverted input signal, first and second power source voltages, a second unit adapted to output an emission control signal based on the first output signal and the input signal, a third unit adapted to transmit the first or second power source to the first unit based on the emission control signal, a inverted clock signal and an inverted emission control signal when a first path between the first power source and the first node and a second path between the second power source and the first node are blocked by the clock signal, and a fourth unit adapted to output a inverted emission control signal based on the emission control signal and the first output signal. | 03-10-2011 |
20110063196 | ELECTRONIC PAPER DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes a first substrate formed of a light transmitting material; a second substrate disposed to face the first substrate having a predetermined gap therebetween; at least one or more rotatable balls disposed between the first and second substrates and having electrical and optical anisotropy; and partitions dividing a space between the first and second substrates into a plurality of cell spaces accommodating the rotatable balls. The partitions are disposed to be spaced apart from each other with differing gaps therebetween in order to allow the cell spaces to have different sizes. When the same magnitude of voltage is applied to the rotatable balls disposed in the differently sized cell spaces, respective rotation angles of the rotatable balls become different, and accordingly a wide range of contrast levels is displayed. | 03-17-2011 |
20110069000 | SYSTEM FOR DISPLAYING IMAGES - A system for displaying images is provided. The system includes a full-color organic electroluminescent device having a bottom substrate. A reflection layer, a first transparent electrode, an organic electroluminescent unit, and a second transparent electrode are sequentially disposed on the bottom substrate. Particularly, a light enhancing layer is disposed between the bottom substrate and the first transparent electrode. | 03-24-2011 |
20110090137 | PIXEL CIRCUIT AND PIXEL DRIVING METHOD - An exemplary pixel circuit includes an OLED, a storage capacitor, a driving transistor and first through fourth switching transistors. The driving transistor is for driving the OLED at a predetermined brightness. The first source/drain electrode of the driving transistor is coupled to a terminal of the storage capacitor, the second source/drain electrode is coupled to the OLED, and the gate electrode is coupled to receive a data voltage through the first switching transistor. Gate-on voltages of the first and second switching transistors are in opposite phases to each other, and the first and second switching transistors are controlled by the same control signal. Likewise, gate-on voltages of the third and fourth switching transistors are in opposite phases to each other, and the third and fourth switching transistors are controlled by the same control signal. A pixel driving method is also disclosed. | 04-21-2011 |
20110095967 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel and an organic light emitting device that can display an image having a desired luminance. The pixel includes an organic light emitting diode (OLED), first through third transistors, and a first capacitor. The OLED has a cathode electrode coupled to a second power source. The second transistor controls the current from a first power source to the OLED. The first capacitor has a first terminal coupled to a gate electrode of the second transistor. The first transistor is coupled between a second terminal of the first capacitor and a data line, and turns on when a scan signal is supplied to a scan line. The third transistor is coupled between the gate electrode and a second electrode of the second transistor, and turns on when a control signal is supplied to a control line. The third transistor remains turned on for a longer time than the first transistor. | 04-28-2011 |
20110109531 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes: an organic light emitting diode including an anode electrode and a cathode electrode, where the cathode electrode is connected with a second power supply; a first transistor including a gate electrode, where the first transistor is connected between a first power supply and the organic light emitting diode, where the first transistor is configured to control an amount of current flowing from the first power supply through the organic light emitting diode to the second power supply; a second transistor connected between the gate electrode of the first transistor and the anode electrode of the organic light emitting diode; a third transistor connected between the first transistor and the first power supply; and a storage capacitor connected between the gate electrode of the first transistor and a data line. | 05-12-2011 |
20110109532 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting diode (OLED) display and a method for manufacturing the same are described. An exemplary embodiment provides an OLED display including: a substrate including a plurality of pixel areas; a light emitting unit including an organic light emitting diode and a plurality of first thin film transistors, the light emitting unit being formed in each of the plurality of pixel areas; and a sensor unit including a photosensor and a plurality of second thin film transistors, the sensor unit being formed in at least some of the plurality of pixel areas. Each of the plurality of first thin film transistors and the plurality of second thin film transistors includes an oxide semiconductor layer, and the photosensor includes an oxide photoelectric conversion layer that are made of a same material on a same layer as the oxide semiconductor layer. | 05-12-2011 |
20110115693 | Display Device - A display device includes a first display panel and a second display panel. The first display panel displays a first image in a first direction. The second display panel is on the first display panel and shares a common substrate with the first display panel. The second display panel displays a second image in the first direction. The second image at least partially overlaps the first image. | 05-19-2011 |
20110122053 | Organic Light Emitting Diode Display - An organic light emitting diode (OLED) display includes: a first substrate; an organic light emitting diode that is positioned on the first substrate and that emits light; a second substrate that is opposite to the first substrate with the organic light emitting diode interposed therebetween; a sealant that is positioned between the first substrate and the second substrate to cohere and seal the first substrate and the second substrate; and a refractive index change portion that is positioned on the second substrate to be opposite to the organic light emitting diode and that has a refractive index that sequentially reduces from the second substrate to the organic light emitting diode. | 05-26-2011 |
20110128211 | LUMINESCENT DISPLAY DEVICE - A luminescent display device includes a substrate and a thin-film transistor above the substrate. The thin-film transistor includes a semiconductor layer, a gate insulating film on the semiconductor layer, a gate electrode on the gate insulating film, a source electrode, and a drain electrode. The luminescent display device further includes an interlayer insulating film on the gate electrode, a first capacitor electrode on the interlayer insulating film in a region above the gate electrode, and a luminescent element configured to be driven by a driver to produce luminescence. The driver includes the thin-film transistor, and the first capacitor electrode and the gate electrode constitute a capacitor. | 06-02-2011 |
20110134018 | METHOD OF MANUFACTURING FLEXIBLE DISPLAY APPARATUS - A method of manufacturing a flexible display apparatus, and more particularly, to a flexible display apparatus including a display unit including a thin-film transistor which is easily encapsulated. The method of manufacturing a flexible display apparatus includes: sequentially forming a first plastic film and a first barrier layer on a first substrate; forming a thin-film transistor on the first barrier layer; forming on the thin-film transistor a display device that is electrically connected to the thin-film transistor; forming an encapsulation member including a second substrate, a second plastic film, and a second barrier layer, wherein the second substrate and the second film are sequentially stacked on the second barrier layer; combining the encapsulation member with the upper portion of the display device; ablating the first substrate from the first plastic film; and ablating the second substrate from the second plastic film. | 06-09-2011 |
20110134019 | ORGANIC LIGHT EMITTING DIODE DEVICE - An organic light emitting diode device is disclosed. The organic light emitting diode device includes a color calibration layer which is applied to the white sub-pixel. The color calibration layer selectively absorbs light in a given wavelength region thereby increasing luminance due to the white sub-pixel while simultaneously preventing the deformation of white color coordination. The contrast ratio may also be improved by reducing the reflection of external light, thereby minimizing the need for a polarizer, and the thickness of the device may thus be decreased and processing costs may be reduced. | 06-09-2011 |
20110140997 | DISPLAY DEVICE - The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to be input into the pixel portion is reduced, and the magnitude of a current to flow through the EL element is allowed to be maintained at a constant level even when a temperature of an EL layer changes by providing the EL display with another EL element to be used for monitoring a temperature. | 06-16-2011 |
20110156990 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel for use in an organic light emitting display device capable of displaying an image of uniform brightness is provided. The pixel includes: an organic light emitting diode; a first transistor for controlling the amount of current supplied to the organic light emitting diode; a storage capacitor coupled between a gate electrode and a second electrode of the first transistor; a second transistor coupled between the gate electrode of the first transistor and a data line, and configured to turn on when a scan signal is supplied to a scan line; a fourth transistor coupled between the first electrode of the first transistor and a first power source, and configured to be off during a period when a voltage is charged to the storage capacitor; and a third transistor coupled between the gate electrode and the first electrode of the first transistor. | 06-30-2011 |
20110169720 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device that can prevent distortion of an image transmitted therethrough by preventing light scattering. The organic light emitting display device includes a substrate in which a plurality of transmitting regions and a plurality of pixel regions are defined. The plurality of pixel regions are spaced apart from each other by the transmitting regions. A passivation layer is formed in all the plurality of transmitting regions and the plurality of pixel regions. A first aperture is formed in a location on the passivation layer, which corresponds to an at least part of the plurality of transmitting regions; a plurality of pixel electrodes that are formed on the passivation layer and are disposed to overlap and cover the thin film transistors. An opposite electrode formed to face the plurality of pixel electrodes and to allow light to pass therethrough. An organic emission layer is interposed between the plurality of pixel electrodes and the opposite electrode to emit light. | 07-14-2011 |
20110181500 | LUMINANCE COMPENSATION APPARATUS FOR AN OLED PANEL AND METHOD THEREOF - A luminance compensation apparatus for an OLED panel including a luminance integration unit and a luminance compensation unit is provided. The luminance integration unit is used for respectively integrating a luminance value for each dot of an OLED panel before a current frame period to obtain an integrated luminance value for each dot of the OLED panel. The luminance compensation unit is used for respectively converting the integrated luminance value for each dot of the OLED panel to a compensation luminance value for each dot of the OLED panel according to a compensation lookup table, and generating an output luminance value for each dot of the OLED panel according to the compensation for luminance value for each dot of the OLED panel and a luminance value for each dot of the OLED panel at the current frame period to drive signals to compensate luminance for each dot of the OLED panel. | 07-28-2011 |
20110187629 | FLAT PANEL DISPLAY APPARATUS AND ORGANIC LIGHT-EMITTING DISPLAY APPARATUS - A flat panel display apparatus includes a substrate; a display unit which is formed on the substrate and displays an image; a metal sheet which faces towards the substrate; a sealant which fills the entire free space between the substrate and the metal sheet and seals the space between the substrate and the metal sheet; and a polymer layer which is disposed on a surface of the metal sheet and has a lower thermal expansion coefficient than the metal sheet. An organic light-emitting display (OLED) apparatus including a sealant which fills an entire space between a substrate and a metal sheet is also disclosed. | 08-04-2011 |
20110193768 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes: an OLED; a first transistor having a first electrode coupled to a power source and a second electrode coupled to the OLED and configured to control a magnitude of current supplied to the OLED; a third transistor having a first electrode coupled a first node and a second electrode coupled to a gate electrode of the first transistor; a capacitor coupled between the first node and a second electrode of the first transistor; a second transistor having a first electrode coupled to the first node and a second electrode coupled to a data line and configured to be turned on when the third transistor is turned off; and a fourth transistor having a first electrode coupled to a gate electrode of the first transistor and a second electrode coupled to a reference power source and configured to be turned on and off concurrently with the second transistor. | 08-11-2011 |
20110221660 | Self-luminescent Display Device, Display Method and Portable Computer of the Same - A self-luminescent display device for an electronic device includes a display screen and a display controller. The display screen is utilized for displaying pictures via a plurality of self-luminescent elements, and includes a data display area for displaying an image and a status display area for displaying a status information of the electronic device. The display controller is utilized for receiving an image data corresponding to the image and a control signal corresponding to the status information, to drive the data display area and the status display area to display the image and the status information, respectively. | 09-15-2011 |
20110221661 | Organic light-emitting display device - An organic light-emitting display device includes a substrate, the substrate having a plurality of transmitting regions, a plurality of thin film transistors, a plurality of conductive lines, a passivation layer, a plurality of pixel electrodes on the passivation layer, an opposite electrode facing the plurality of pixel electrodes, an organic layer disposed among the plurality of pixel electrodes and the opposite electrode, and a plurality of masking films disposed in the plurality of transmitting regions. | 09-15-2011 |
20110248907 | DISPLAY APPARATUS - A display apparatus having an improved function for encapsulating a display unit, and comprising a substrate, wherein the display unit is disposed on the substrate; an encapsulation unit facing the display unit, the encapsulation unit comprising: a metal layer; and a composite member; and a sealing unit disposed between the substrate and the encapsulation unit and separated from the display unit so as to adhere the substrate to the encapsulation unit, wherein the composite member comprises a resin matrix and carbon fibers, and wherein the metal layer is disposed between the substrate and the composite member. | 10-13-2011 |
20110254757 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display includes a substrate including a display area and a non-display area, a display unit that is formed in the display area and includes a plurality of subpixels arranged in a matrix form, a main ground line that is positioned at a first side of the non-display area and is formed using the same material as source and drain electrodes included in each subpixel, and an auxiliary ground line that is formed to surround the non-display area, overlaps at least a portion of the main ground line at the first side of the non-display area, is electrically connected to the main ground line, and is formed using the same material as a lower electrode included in each subpixel. | 10-20-2011 |
20110260953 | LIGHT EMITTING DEVICE AND DISPLAY PANEL - A light emitting device includes a substrate, a patterned light-scattering layer, and an electroluminescent device. The patterned light-scattering layer is disposed on a portion of the substrate. The patterned light-scattering layer has a bottom surface in contact with the substrate, a top surface opposite to the bottom surface, and a plurality of sidewalls connecting the bottom surface and the top surface. The electroluminescent device is at least disposed on the sidewalls. | 10-27-2011 |
20110260954 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS - An organic light-emitting display apparatus includes: a plurality of thin film transistors (TFTs); a planarization layer covering the plurality of TFTs; a plurality of pixel electrodes formed on the planarization layer, each of the pixel electrodes being connected to a corresponding one of the plurality of TFTs using a via-hole passing through the planarization layer and having a light-emitting portion and a non-emitting portion, and each of the via-holes being located at a point farthest from each of the light-emitting portions surrounding the via-hole; a pixel defining layer formed on the planarization layer to respectively cover each of the via-holes and the non-emitting portions; organic layers, each organic layer including an emission layer and being disposed in a corresponding one of the light-emitting portions; and a counter electrode disposed on each of the organic layers. | 10-27-2011 |
20110260955 | ORGANIC EL LIGHT EMITTING DEVICE - An organic EL light emitting device is provided with: a substrate having a coloring region where two or more pixel regions are arranged in a line; line-shaped main banks which define the coloring region and face each other; pixel separation regions arranged among the pixel regions in the coloring region; a pixel electrode arranged for each of the pixel regions; and organic function layers arranged on the pixel electrodes. In the organic EL light emitting device, auxiliary banks, and grooves for communicating the pixel regions with each other are arranged in the pixel separation regions, and the projection of an end portion of a second pixel region side of a groove arranged in a pixel separation region (A) overlaps an auxiliary bank arranged in a pixel separation region (B) if the end portion thereof is projected from the first pixel region side to the second pixel region side in the line direction of the main banks when three successive pixel regions in the coloring region are set as the first pixel region, the second pixel region, and a third pixel region, and a pixel separation region between the first pixel region and the second pixel region is set as the pixel separation region (A), and a pixel separation region between the second pixel region and the third pixel region is set as the pixel separation region (B). | 10-27-2011 |
20110273366 | Display Device And An Electronic Apparatus Using The Same - In a conventional display device comprising a sub-display, the display device is increased in thickness and in the number of components as the number of displays is increased. In the present invention, a dual emission display device is used so that either surface of a display is used as a main display or a sub-display. Accordingly, the display device can be reduced in thickness and in the number of components. Further, mechanical reliability can be enhanced when the invention is applied to a tablet PC, a video camera and the like. | 11-10-2011 |
20110279356 | ELECTRO-OPTICAL DISPLAY DEVICE AND DISPLAY METHOD THEREOF - A method of reducing power consumption of an electro-optical display device which can display a still image with the use of analog signals. A circuit in which a small amount of leakage current flows between a source and a drain of a selection transistor when the selection transistor is off; the source of the selection transistor is connected to a gate of an N-channel driving transistor, a gate of a P-channel driving transistor, and one electrode of a capacitor; and a source of each of the N-channel driving transistor and the P-channel driving transistor is connected to one electrode of a display element is provided in each pixel. The longest time of one frame is set to 100 seconds or longer with the use of such a circuit, whereby power consumption at the time of rewriting is reduced. | 11-17-2011 |
20110298694 | ELECTROLUMINESCENT DISPLAY PANEL AND PIXEL STRUCTURE THEREOF - An electroluminescent (EL) display panel includes a blue EL device, a red EL device, a green EL device, a first power line electrically connected to the blue EL device, a second power line electrically connected to the red EL device, and a third power line electrically connected to the green EL device. The first power line has a first width, the second power line has a second width, and the third power line has a third width, wherein the first width is larger than the second width and the first width is larger than the third width. | 12-08-2011 |
20110316765 | MATRIX ADDRESSED DISPLAY SYSTEM - The present invention relates to the monitoring and correction of display errors in a matrix addressed display system. The display system comprises a graphics system, a display module and a display fault handling system including a memory. The display module has a matrix addressed electro-optical array of display elements, the display elements being arranged in rows and columns and having corresponding row and column circuit lines. The graphics system generates display data and sends this to the display module in order to activate using row and column circuit lines each of the display elements and thereby display visual information to a user of the system based on the display data. The display fault handling system is used to monitor over a period of time at least one electrical parameter of a plurality these circuit lines and determine whether or not a display error has occurred. | 12-29-2011 |
20120019436 | DISPLAY APPARATUS - A display apparatus includes a plurality of pixels. Each pixel has a light emitting unit, a memory cell, and a driving circuit. The memory cell stores an image data. The driving circuit is electrically connected with the light emitting unit and the memory cell, and drives the light emitting unit according to the image data. | 01-26-2012 |
20120026074 | Display device and organic light emitting diode display - A display device includes: a display substrate; a display unit formed on the display substrate and a sealing substrate affixed to the display substrate by an adhering layer that surrounds the display unit. The sealing substrate includes a composite member including a resin and a plurality of carbon fibers and an insulating member attached to the composite member. The insulating member includes a through hole. A metal film is disposed at one side of the sealing substrate, facing the display substrate; and a conductive connection portion contact the metal film through the through hole. | 02-02-2012 |
20120044128 | DISPLAY METHOD AND DEVICE USING PHOTONIC CRYSTAL CHARACTERISTICS - A display method and device using photonic crystal characteristics are disclosed. In the display method using photonic crystal characteristics in accordance with the present invention, when a plurality of particles having electric charges are dispersed in a solvent, an electric field is applied to control inter-particle distance. | 02-23-2012 |
20120044129 | REFLECTIVE COLOUR DISPLAY DEVICE - A reflective colour display device comprises a plurality of capillary sub-pixels arranged side by side. Each capillary sub-pixel has a first end and a second end, and a scattering medium disposed between said ends. Each capillary sub-pixel contains a transparent coloured medium which can be reversibly changed to a medium with a different light absorption property in an optical modulation region between the first end and the scattering medium. The optical modulation region of each capillary sub-pixel has a height to width aspect ratio of at least about 3. Light incident on the scattering medium through a first sub-pixel will be scattered into at least one neighbouring sub-pixel having a coloured medium of different colour to coloured medium in the first sub-pixel. | 02-23-2012 |
20120044130 | DISPLAY APPARATUS AND ELECTRONIC APPARATUS - A display apparatus includes a pixel unit in which pixels are arranged in a matrix pattern; and a driving circuit for driving the pixel unit. Each of the pixels includes a signal level holding capacitor; a first transistor that is turned on/off in response to a writing signal and via which one end of the signal level holding capacitor is connected to a signal line; a second transistor having one end of the signal level holding capacitor connected to a gate thereof and the other end of the signal level holding capacitor connected to a source thereof; a current-driven self-light-emitting element whose cathode is held at a cathode potential and whose anode is connected to the source of the second transistor; a third transistor that is turned on/off in response to a driving pulse signal; and a fourth transistor that is turned on/off in response to a control signal. | 02-23-2012 |
20120062449 | REDUCING VIDEO CROSS-TALK IN A VISUAL-COLLABORATIVE SYSTEM - A visual-collaborative system including a display screen configured to display images and a camera configured to capture images. The system also includes a video cross-talk reducer configured to estimate video cross-talk that is to be displayed on the display screen and captured by the camera, and reducing the estimated video cross-talk from captured images by the camera. The estimation of the video cross-talk and reduction of the video cross-talk is signal based. | 03-15-2012 |
20120062450 | Pixel circuit and display device - A pixel circuit includes: a switching transistor whose conduction is controlled by a drive signal supplied to the control terminal; a drive wiring adapted to propagate the drive signal; and a data wiring adapted to propagate a data signal. The drive wiring is formed on a first wiring layer and connected to the control terminal of the switching transistor. The data wiring is formed on a second wiring layer and connected to a first terminal of the switching transistor. A multi-layered wiring structure is used so that the second wiring layer is formed on a layer different from that on which the first wiring layer is formed. | 03-15-2012 |
20120068915 | LIGHT EMITTING DEVICE AND ELECTRONIC APPARATUS - To solve degradation with time of a light emitting element by a new method. When the potential of an electrode of a monitor pixel is sampled and fed back to a light emitting pixel, degradation with time of a light emitting element can be corrected. In addition, when a writing period is divided into a plurality of periods during which a plurality of rows are selected, a gray scale can be expressed by a weighted light emitting period. That is to say, a light emitting device of the invention has a plurality of monitoring light emitting elements, a monitor line for monitoring changes in the potentials of electrodes of the plurality of light emitting elements, and a means for preventing, when any one of the plurality of monitoring light emitting elements is short-circuited, a current from flowing to the short-circuited monitoring light emitting element through the monitor line. | 03-22-2012 |
20120086626 | FEEDBACK STRUCTURE FOR AN ORGANIC LIGHT-EMITTING DIODE DISPLAY - A feedback structure for an organic light-emitting diode display comprises an organic light-emitting diode panel, a driver chip and a signal transmission line group. The organic light-emitting diode panel includes a signal input terminal group and a signal feedback term connected to the ground. The driver chip includes a power input port connected to an external power source, a signal input port, and a feedback port connected to the ground. The signal transmission line group is electrically connected between the signal input terminal group and the signal output port. By such arrangements, it can ensure a stable segment control signal or avoid damage to the driver chip. | 04-12-2012 |
20120092239 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - An organic light emitting device including a first pixel, a second pixel and a third pixel displaying different colors from each other according to the present invention, the organic light emitting device includes a reflecting electrode and a translucent member forming a micro-cavity along with the reflecting electrode, wherein a optical path length is an interval between the reflecting electrode and the translucent member, and wherein the light path lengths of at least two pixels among the first pixel, the second pixel and the third pixel are the same. | 04-19-2012 |
20120098736 | ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAY - An organic light emitting diode (OLED) display is disclosed. In one embodiment, the display includes 1) a display panel including i) a display area configured to display an image and ii) a pad area adjacent to the display area and configured not to display an image, 2) a bezel configured to receive the display panel and 3) a reinforcing member positioned between the pad area of the display panel and the bezel. According to at least one embodiment, the deformation of the portion corresponding to the pad area of the display panel among the bezel may be prevented during an external impact, and thereby the twisting strength and the bending strength may be improved. | 04-26-2012 |
20120098737 | Organic light-emitting diode display device - An organic light-emitting diode (OLED) includes a substrate partitioned into a plurality of pixel regions, and a first electrode in each of the pixel regions on the substrate. The first electrode is partitioned into a first emission region and a second emission region. The OLED includes a first intermediate layer in the first emission region of the first electrode, a second intermediate layer in the second emission region of the first electrode, a second electrode interposed between the first electrode and the second intermediate layer, and a third electrode disposed on the first and second intermediate layers. Light generated by the first intermediate layer is transmitted through the first and third electrodes, and light generated by the second intermediate layer is transmitted through the third electrode. | 04-26-2012 |
20120112988 | DISPLAY DEVICE - Luminance ununiformity and color shading are prevented in a display area of an irregular hexagonal shape formed by cutting-off a corner from a rectangular shape. | 05-10-2012 |
20120112989 | DISPLAY APPARATUS AND METHOD FOR MAKING THE SAME - A pixel has an outer region extending linearly along a boundary with an adjacent pixel and an inner region extending along the inner side of the outer region. Wiring lines are arranged across the outer region and the inner region. An outer uneven zone is formed along the outer region and on a substrate due to level differences resulting from the presence of the wiring lines. Similarly, an inner uneven zone is formed along the inner region and on the substrate due to level differences resulting from the presence of the wiring lines. A pattern of a conductor film of which the wiring lines are made is formed properly such that recessed portions of the outer uneven zone are located directly behind their corresponding raised portions of the inner uneven zone, as viewed from inside the pixel. | 05-10-2012 |
20120127064 | ORGANIC ELECTROLUMINESCENT DISPLAY APPARATUS - Provided is a display apparatus that can select either an “outdoor visibility mode” or a “wide viewing angle mode” or either a “power saving mode” or a “wide viewing angle mode” depending on a user scene; that can also select intermediate states between the two modes; and provide high displayed image quality. An organic electroluminescent display apparatus of the present invention includes a plurality of pixels, an organic electroluminescent element, a data line driver, a pixel circuit, and a gate line driver, in which each pixel includes two organic electroluminescent elements that emit light of the same color, an element with high light-collecting property is disposed over a light emission side of only one of the two organic electroluminescent elements, and units that make a difference in lighting times or drive currents between the two organic electroluminescent elements are included. | 05-24-2012 |
20120127065 | Display Device and Method of Driving the Same - Disclosed is an EL display device by which accurate gray scales can be obtained. The EL display device comprises a source signal line driving circuit which includes an operation amplifier electrically connected to a correction TFT and a source signal line, and a pixel which includes an EL element and a driving TFT. An inputted analog signal voltage is converted into a current, the current is converted into a gate-source voltage of the correction TFT that has the same polarity as the driving TFT, the gate-source voltage is supplied as a source line signal to the source signal line, and the source line signal is applied to a gate electrode of the driving TFT. Thus the EL element can emit light at a luminance linearly corresponding to the inputted analog signal voltage. | 05-24-2012 |
20120133575 | DISPLAY APPARATUS - Provided is a display apparatus, which has both high light-emission efficiency and good display performance. The display apparatus includes multiple pixels, each of the multiple pixels including an organic light-emitting device including a first electrode, a light-emitting layer, and a second electrode, the multiple pixels including an optical unit for allowing a part of light emitted from the light-emitting layer to exit to outside while changing an exiting direction thereof, in which, in the multiple pixels including the optical unit, an optical distance between the light-emitting layer and the first electrode or an optical distance between the light-emitting layer and the second electrode is set to a predetermined value. | 05-31-2012 |
20120139819 | ORGANIC LIGHT EMITTING DIODE PIXEL ARRAY - An organic light emitting diode (OLED) pixel array includes a plurality of first signal lines, a plurality of second signal lines, and a plurality of pixel array units. The pixel array units are arranged in array on a substrate. Each of the pixel array units includes a plurality of OLED pixels. The OLED pixels are connected to the same first signal line and respectively connected to a first portion and a second portion of the second signal lines. At least two of the OLED pixels are located between the first portion and the second portion. A transmittance region is surrounded by the first portion, the second portion, and the OLED pixels, and the first portion and the second portion are respectively located at two opposite sides of the transmittance region. | 06-07-2012 |
20120139820 | Organic light emitting display device and driving method thereof - An organic light emitting display device of the present embodiments includes: a plurality of pixels positioned at intersections of scan lines, data lines, and emission control lines; a pixel unit, including the plurality of pixels, and divided into two or more blocks; a scan driver sequentially supplying scan signals to the scan lines; a data driver supplying data signals to the data lines in synchronization with the scan signals; and two or more emission drivers connected with emission control lines in the blocks, in which each emission driver supplies emission control signals to emission control lines connected thereto, and at least one or more emission control signals are supplied in each block simultaneously. | 06-07-2012 |
20120139821 | Organic Light Emitting Display Device and Method for Manufacturing the Same - The present disclosure relates to an organic light emitting display device and a method for manufacturing the same. The present disclosure suggests an organic light emitting display device including an organic layer; a display element layer including a display area representing video data and a pad area extended from the display area, on the organic layer; film elements formed on the display element layer; a film type printed circuit board connected to the pad area; and a reinforcing adhesive filling a space between the film type printed circuit board and the film elements | 06-07-2012 |
20120154258 | PIXEL CIRCUIT AND DISPLAY DEVICE - A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits. | 06-21-2012 |
20120162051 | Display Device - A display device with high-definition, in which display unevenness due to a voltage drop in a wiring or display unevenness due to a variation in characteristics of TFTs are suppressed. The display device of the invention comprises a first wiring for transmitting a video signal and a second wiring for supplying a current to a light emitting element. The first wiring and the second wiring extend parallel to each other, and are formed so as to overlap with each other at least partly with an insulating layer interposed therebetween. | 06-28-2012 |
20120169574 | Organic Light Emitting Display - An organic light emitting display includes pixels at crossing regions of scan lines, data lines, and emission control lines, a display unit including the pixels and divided into at least i blocks, wherein i is a natural number greater than 1, each of the blocks including corresponding scan lines, scan drivers each coupled to a corresponding one of the blocks for supplying scan signals to the corresponding scan lines, emission drivers included in the blocks for supplying emission control signals to the emission control lines, each of the blocks includes corresponding emission control lines, a data driver for supplying data signals to the data lines, a timing controller for controlling the scan drivers, the emission drivers, and the data driver and for supplying emission block control signals to control light emission of the pixels, wherein the pixels are set in a non-emissive state when receiving the emission block control signal. | 07-05-2012 |
20120176297 | PIXEL CIRCUIT AND DISPLAY DEVICE, AND A METHOD OF MANUFACTURING PIXEL CIRCUIT - The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element. | 07-12-2012 |
20120188150 | DISPLAY DEVICE - A display device including: scanning lines; data lines; pixels provided in a matrix; and a power line, each of the pixels includes: an organic EL device; a drive transistor which converts a data voltage applied to a gate into a drive current; a capacitor which holds a voltage according to the data voltage; a selector transistor having a gate connected to one of the scanning lines and a source connected to the gate of the drive transistor; a selector transistor having a gate connected to the scanning line, a source connected to a drain of the selector transistor, and a drain connected to the data line; and a guard potential transistor having a gate connected to the source of the selector transistor, a source connected to the drain of the selector transistor, and a drain connected to the power line. | 07-26-2012 |
20120194412 | Display device, Electronic Device and Method of Driving Display Device - The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted. | 08-02-2012 |
20120218173 | DISPLAY PANEL APPARATUS AND MANUFACTURING METHOD OF DISPLAY PANEL APPARATUS - A display panel apparatus includes pixels. Each pixel includes an organic luminescent layer between an upper electrode and a lower electrode and is configured to emit a red, a green, or a blue light. A glass substrate is above the upper electrode. A lens sheet is between the pixels and the glass substrate and includes lenses and a base. Each lens corresponds to a pixel and protrudes from the base. Partitions are between the glass substrate and the lens sheet for partitioning the lenses. The partitions have a first height that is greater than a second height of the lenses. The base includes trenches between the lenses. The trenches are recessed in a direction opposite the lenses. The partitions are in the trenches. Each partition has a cross-section that includes an upper side that has a different length than a bottom side and lateral sides that are tilted. | 08-30-2012 |
20120223873 | DISPLAY PANEL APPARATUS AND MANUFACTURING METHOD OF DISPLAY PANEL APPARATUS - A display panel apparatus includes a substrate and an organic electro-luminescence unit that includes an array. The array is above the substrate and includes a red, a green, and a blue pixel. A glass layer is above the organic electro-luminescence unit. A resin layer is between the glass layer and the organic electro-luminescence unit. A surface of the resin layer that is on a side toward the organic electro-luminescence unit includes concaves. Each of the concaves is concaved toward the glass layer and corresponds to one of the pixels. Lens resins are each in one of the concaves and include a surface that is substantially coplanar with the surface of the resin layer. A refractive index of the lens resin in the concave that corresponds to the blue pixel is greater than a refractive index of the lens resin in the concave that corresponds to the red pixel. | 09-06-2012 |
20120235888 | NEW BENZO[c]PHENANTHRENE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE CONTAINING SAME - There is provided a benzo[c]phenanthrene compound represented by formula [1]: | 09-20-2012 |
20120242562 | DISPLAY DEVICE - According to one embodiment, a display device includes an insulating layer, a display unit, and an organic EL layer. The display unit is provided on a major surface of the insulating layer and includes a plurality of gate lines, a plurality of signal lines, a plurality of power source lines and a plurality of pixel units arranged in a matrix configuration. The EL layer is provided on the display unit. Each pixel unit includes a drive transistor and a resistor. The drive transistor includes a drive gate electrode, a drive source electrode, and a drive drain electrode. The drive source electrode or the drive drain electrode is connected to one of the power source lines. An end of the resistor is connected to the drive gate electrode. An other end of the resistor is connected to one of the gate line, the signal line, and the power source line. | 09-27-2012 |
20120268353 | DISPLAY DEVICE - An object of the invention is to convert input RGB data to R′G′B′W data without suffering loss of gradations of the input RGB data. A display panel | 10-25-2012 |
20120268354 | DISPLAY DEVICE - Embodiments relate to an organic EL panel comprising a panel driving circuit for converting R′G′B′W data into driving signals which is supplied to a pixel circuit. At a RGB→R′G′B′W converting section, the bit width of input RGB data is greater than the bit width of converted R′G′B′W, and the characteristic curve of the amount of luminescent of W sub pixel for the input data of W in the said panel driving circuit is different from the R′G′B′ curve normalized at a luminance ratio necessary for a reproduction of white color with sub pixels of RGB. An appropriate process is carried out by the RGB→R′G′B′W converting section in accordance with the curve of input data from the panel driving circuit verses amount of luminescent to minimize an error which may be generated when a conversion is made. | 10-25-2012 |
20120268355 | Display Device - A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurality of current supply lines extending parallel to each other. Each current supply line is connected to a plurality of driving transistors in a line. One end of each current supply line is connected to the first current input terminal via a first wiring intersecting with the current supply lines, and the other end thereof is connected to the second current input terminal via a second wiring intersecting with the current supply lines. Accordingly, a current is supplied to each current supply line from both the first and the second current input terminals. The first and the second current input terminals are provided separately from each other. | 10-25-2012 |
20120287024 | METHOD FOR DRIVING DISPLAY DEVICE - In a display device using a light-emitting element or the like, the power consumption is reduced without reducing the display quality. A first operation and a second operation are carried out. In the first operation, a threshold voltage of a transistor is held in a capacitor. In the second operation, a signal potential corresponding to an image signal and the threshold voltage are added with the use of a capacitive coupling by the capacitor and are input to a gate of the transistor, so that a drain current of the transistor flows into a load element. The first operation is carried out once in a plurality of frames. A switch that determines whether the capacitor is electrically connected to a wiring to which a power supply potential is input is provided. A transistor in which a channel is formed in an oxide semiconductor layer is used as the switch. | 11-15-2012 |
20120287025 | ACTIVE MATRIX DISPLAY DEVICE AND DRIVING METHOD THEREOF - In a circuit in FIG. | 11-15-2012 |
20120287026 | DISPLAY PANEL AND PRODUCTION METHOD THEREOF - A display panel includes: a first substrate; light-emitting elements on a region of the first substrate; a second substrate facing the first substrate with the light-emitting elements therebetween; a glass frit between the first substrate and the second substrate so as to surround the region of the first substrate in which the light-emitting elements are disposed, the glass frit providing a hermetic seal between the first substrate and the second substrate; and a light-shielding part formed on one of the first substrate and the second substrate so as to extend along the glass frit, the light-shielding part shielding light. The light-shielding part has a lower light-shielding property in a region corresponding to the outer region of the glass frit than in a region corresponding to the inner region of the glass frit. The glass frit has been irradiated with light through the light-shielding part. | 11-15-2012 |
20120299806 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME - Provided are a novel organic compound appropriate for emission of blue light and an organic light-emitting device including the organic compound. The organic compound is represented by general formula 1: | 11-29-2012 |
20120306727 | FUSED POLYCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE USING THE COMPOUND - Provided are a fused polycyclic compound suitable for use mainly as a component for a blue-light-emitting device, and an organic light-emitting device using the compound. The fused polycyclic compound is represented by the general formulae (1), (2), (8) and (9). | 12-06-2012 |
20120306728 | Display Device, Driving Method Of The Same, and Electronic Device - A display device suppresses the influence of variations of a current value supplied to a light emitting element caused by a temperature change. In particular, luminance variations caused by a temperature gradient in a pixel portion due to a heat generated from a source signal line driver circuit are suppressed. In a display device including a gate signal line provided in a row direction, a source signal line provided in a column direction, and a light emitting element in a pixel portion arranged in matrix corresponding to the gate signal line and the source signal line, a column of monitor elements is provided beside the pixel portion, a constant current is supplied to each row of the monitor elements, and a voltage generated at the monitor element for each row of pixels is applied to light emitting elements of the corresponding row. | 12-06-2012 |
20120306729 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including: a pixel circuit; a signal line; a scan line; a drive power supply line; a common power supply line; a power supply line drive circuit; a high-potential power supply line; and a low-potential power supply line. | 12-06-2012 |
20120313844 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - An organic light-emitting display device includes a substrate, a plurality of pixel electrodes arranged in a matrix on the substrate, and an organic common layer covering the pixel electrodes. The pixel electrodes include a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes. An n-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column includes the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number. One of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)-th pixel column in the same row. | 12-13-2012 |
20120319929 | DISPLAY APPARATUS AND METHOD FOR MAKING THE SAME - A pixel has an outer region extending linearly along a boundary with an adjacent pixel and an inner region extending along the inner side of the outer region. Wiring lines are arranged across the outer region and the inner region. An outer uneven zone is formed along the outer region and on a substrate due to level differences resulting from the presence of the wiring lines. Similarly, an inner uneven zone is formed along the inner region and on the substrate due to level differences resulting from the presence of the wiring lines. A pattern of a conductor film of which the wiring lines are made is formed properly such that recessed portions of the outer uneven zone are located directly behind their corresponding raised portions of the inner uneven zone, as viewed from inside the pixel. | 12-20-2012 |
20120319930 | DISPLAY APPARATUS AND FABRICATION METHOD FOR DISPLAY APPARATUS - Disclosed herein is a display apparatus, including: a plurality of pixel circuits arrayed in a matrix; a driving wiring line to which the pixel circuits are connected; and a plurality of signal lines wired so as to cross with the driving wiring line and having the pixel circuits connected; the signal lines being wired in parallel to each other. | 12-20-2012 |
20120326951 | Display Device - To provide a display device with little signal delay and a display device that can operate with low power consumption, parasitic capacitance between a common wiring that applies a common potential to a plurality of pixels and signal lines that input signals for driving the pixels is avoided. Specifically, the common wiring is routed outwardly with respect to an external input terminal to which a signal is input from the, outside, to avoid intersections of the signal lines and the common wiring. Thus, parasitic capacitance between the common wiring and the signal lines is avoided, so that the display device can operate at high speed with low power consumption. | 12-27-2012 |
20120326952 | DISPLAY APPARATUS, METHOD OF MANUFACTURING DISPLAY APPARATUS, AND ELECTRONIC APPARATUS - A display apparatus includes a plurality of pixels each including an electro-optic element, a writing transistor writing a video signal into the pixel, a holding capacitor holding the video signal written by the writing transistor, and a driving transistor driving the electro-optic element based on the video signal held in the holding capacitor. The driving transistor includes a channel region, a gate electrode disposed opposite to the channel region, a first source/drain region closer to a power source, a second source/drain region closer to the electro-optic element, and impurity regions disposed between the channel region and the first and second source/drain regions and having a lower concentration than that of the corresponding source/drain region. The impurity region disposed between the channel region and the first source/drain region is formed in a region other than a region facing the gate electrode. | 12-27-2012 |
20130002526 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE - A novel organic compound suitable for emitting green light and an organic light-emitting device including the organic compound are provided. The organic compound is represented by general formula (1). | 01-03-2013 |
20130021228 | PIXEL CIRCUIT AND DISPLAY DEVICE - [Problem to be solved] To achieve low power consumption. [Solution] The driving transistor T | 01-24-2013 |
20130033416 | ORGANIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE HAVING THE SAME - An organic compound contains indacenodiperylene as the basic skeleton. | 02-07-2013 |
20130044046 | DISPLAY PANEL - A display panel includes a substrate, a TFT device, a patterned dielectric layer, a patterned metal layer and a bridge line. The TFT device is disposed in a display region. The patterned dielectric layer includes an ILD layer disposed over the TFT device, and a sealant stage disposed in a peripheral region. The patterned metal layer includes a signal line disposed on the ILD layer, and a first connecting line and a second connecting line. The first connecting line is disposed in an inner side of the sealant stage facing the display region, and the first connecting line is electrically connected to the signal line. The second connecting line is disposed in an outer side of the sealant stage opposite to the display region. The bridge line is disposed under the sealant stage, and the first connecting line and the second connecting line are electrically connected through the bridge line. | 02-21-2013 |
20130044047 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits. | 02-21-2013 |
20130050066 | DISPLAY DEVICE AND FABRICATING METHOD THEREOF - An exemplary display device includes a substrate, a plurality of first and second pixel units, a first display layer, a second display layer, a spacer and a first color filter. The substrate has a first and a second display region. The first and second pixel units are disposed in the first and second display regions, respectively. The first display layer and the second display layer are disposed on the first and second pixel units, respectively. The first display region is surrounded by the spacer therefore the first display layer is separated from the second display layer. The first color filter is disposed on the first display layer. The first display layer and the second display layer are based on different displaying mechanisms. Therefore, the display device has the advantages of both the first display layer and the second display layer. | 02-28-2013 |
20130057456 | DISPLAY PANEL, DISPLAY, AND ELECTRONIC UNIT - A display panel includes a unit for each sub-pixel, the unit including a plurality of openings, the unit having an array structure in which the openings are arranged in a close packing manner. In the array structure of the unit, when a single virtual opening is placed within a peripheral region of the unit, and a center of the virtual opening and centers of a plurality of openings located adjacent to the virtual opening are connected to one another by straight lines, only one basic figure for the arrangement in the close packing manner is created but two basic figures therefor are not created. | 03-07-2013 |
20130057457 | PIXEL CIRCUIT, DISPLAY PANEL, DISPLAY UNIT, AND ELECTRONIC SYSTEM - A pixel circuit includes: a writing circuit that samples a voltage of a signal line; and a driving circuit that generates from the signal line a current that depends on an output of the writing circuit, and delivers the current to a light-emitting device of a current-drive type. | 03-07-2013 |
20130057458 | PIXEL CIRCUIT AND DISPLAY DEVICE, AND A METHOD OF MANUFACTURING PIXEL CIRCUIT - The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element. | 03-07-2013 |
20130069851 | EL DISPLAY PANEL, ELECTRONIC APPARATUS AND EL DISPLAY PANEL DRIVING METHOD - An electro luminescence display panel adopting an active-matrix driving method and including pixel circuits, a capacitor control line, a coupling capacitor, and a pulse voltage source. | 03-21-2013 |
20130076603 | DISPLAY APPARATUS - Disclosed herein is a display apparatus has a pixel array section including: pixel circuits which are each provided with a driving transistor and an electro-optical device and are laid out to form a matrix; and a draw wire provided in each of the pixel circuits to serve as a wire connecting the driving transistor to a power-supply providing line, wherein the resistance of the draw wire is relatively large in the pixel circuit close to a source applying a power-supply voltage to the power-supply providing line. | 03-28-2013 |
20130082908 | INTEGRATED THERMAL SPREADING - Techniques are provided for removing thermal gradients from an organic light emitting diode (OLED) display. In one embodiment, an OLED display device includes a thermally conductive layer placed between electronic components housed within the device and the OLED display. Heat given off by the electronic components is transferred from warm to cold regions of the thermally conductive layer to create a more uniform ambient temperature across the back of the OLED display. Some embodiments indicate a position of the thermally conductive layer within layers of an OLED display stack (e.g., between a glass substrate and polyimide layer). Some embodiments include a specific range of thermal conductivities and/or thicknesses desired for the thermally conductive layer. | 04-04-2013 |
20130082909 | DISPLAY APPARATUS - A display apparatus includes a plurality of subpixels having different emission colors in a pixel, and each of the subpixels includes an organic EL device. A high-refractive-index transparent layer having a refractive index higher than that of an organic compound layer of the organic EL device is provided on a light exit side of the organic EL device, and further, a light extraction structure is arranged on an outer circumference of the subpixel on the light exit side of the high-refractive-index transparent layer. A distance between first electrodes of the subpixels closest to each other, which are respectively included in the two adjacent pixels, is set to be larger than that between the first electrodes of the two adjacent subpixels within the pixel. | 04-04-2013 |
20130082910 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE - An organic light emitting diode (OLED) display includes a display panel including data lines, scan lines crossing the data lines, and pixels which each include an organic light emitting diode and are arranged in a matrix form, a power generator which is enabled in a normal mode to generate a high potential power voltage for driving the display panel and is disabled in a low power mode, and a panel driving circuit which drives the data lines and the scan lines, disables the power generator in the low power mode to cut off an output of the power generator, and supplies an internal power less than the high potential power voltage to the display panel to reduce the high potential power voltage in the low power mode. | 04-04-2013 |
20130082911 | ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS - An electro-optical device including: first display elements divided into at least a first region and a second region, for displaying a first image, and second display elements each divided into at least a third region and a fourth region, for displaying a second image, the first and second display elements being arranged such that each third region is disposed between the first region and the second region of the adjacent first display element and each second region is disposed between the third region and the fourth region of the adjacent second display element; a parallax barrier layer provided on a side of the display elements adjacent to a viewer, the parallax barrier having light transmitting regions at positions thereof corresponding to boundaries between adjoining first and third regions as well as between adjoining second and fourth regions; and a spacer layer separating the display elements from the parallax barrier layer. | 04-04-2013 |
20130088416 | OLED Display Driver Circuits and Techniques - We describe a method of driving an OLED display. The OLED display comprises a plurality of pixel driver circuits on chiplets, each pixel driver circuit comprising an output transistor for driving a first connection of an associated OLED pixel. A cascode transistor on the chiplet is coupled between the output transistor and the first connection of said associated OLED pixel. A power supply is provided to the chiplet, defining a chiplet voltage range. A second connection of the associated OLED pixel is connected to an OLED voltage outside said chiplet voltage range. The OLED pixel is then driven using the pixel driver circuit on the chiplet over an OLED voltage range greater than said chiplet voltage range. In some preferred embodiments a drain connection of the cascode transistor is set at a voltage below a ground or negative (Vss) power supply to a chiplet. | 04-11-2013 |
20130093650 | Display Device - A signal line driving circuit which includes a digital signal sampling circuit, a storage circuit, a time setting circuit and a constant current circuit, is fabricated of TFTs on an insulating substrate which is made of the same substance as that of a pixel portion substrate. Thus, in a passive type EL display device, the problem of a distortion in the case of bonding the signal line driving circuit onto the pixel portion substrate can be eliminated. Besides, in an active type EL display device, each pixel is constructed of one transistor and an EL element. Thus, the aperture factor of the EL display device is enlarged. | 04-18-2013 |
20130093651 | DISPLAY DEVICE, ELECTRONIC DEVICE, AND DRIVING METHOD - A display device is described. The device includes an active-matrix luminescence panel that has data lines and pixels for determining luminescence of the pixels. Each pixel includes a driving transistor that converts a signal voltage from a data line into a signal current, and a first switch between the data line and the gate of the driving transistor. The device includes a test current generator to supply a test current to one of the data lines, a voltage detector to detect the voltage of one of the data lines, and a controller to control switches, the test current generator and the voltage detector. | 04-18-2013 |
20130100002 | ORGANIC EL DISPLAY DEVICE - An organic electro-luminescence (EL) display device including: above a substrate, scanning lines; data lines; emissive pixels disposed near cross-points of the scanning lines and the data lines; and power supply lines for supplying currents to the emissive pixels, wherein the emissive pixels each have: a switching thin film transistor having a gate to which a scan signal is supplied via one of the scanning lines; a current control thin film transistor for controlling a current to be applied to the emissive pixel, in accordance with the voltage determined based on a data voltage supplied from one of the data lines via the switching thin film transistor; and an organic EL element to which a current is supplied from one of the power supply lines via the current control thin film transistor, the organic EL element including a lower electrode, an organic light-emissive layer, and an upper electrode. | 04-25-2013 |
20130106676 | ORGANIC EL DISPLAY APPARATUS | 05-02-2013 |
20130113687 | ACTIVE MATRIX ORGANIC LIGHT EMITTING DIODE PIXEL CIRCUIT AND OPERATING METHOD THEREOF - An active matrix organic light emitting diode pixel circuit includes an organic light emitting diode, a driving circuit, a switching circuit and a capacitor. In a charge state, by controlling the switching circuit, a first end of the capacitor is electrically coupled to a signal input terminal, and a second end of the capacitor is electrically coupled to a first power source. In a compensation state, by controlling the switching circuit, the first end of the capacitor is electrically coupled to the signal input terminal, and the second end of the capacitor is electrically coupled to an anode of the organic light emitting diode. In an emission state, by controlling the switching circuit, the first end of the capacitor is electrically coupled to the driving circuit, and the second end of the capacitor is electrically coupled to the driving circuit and the anode of the organic light emitting diode. | 05-09-2013 |
20130113688 | ARRAY SUBSTRATE FOR GATE-IN-PANEL-TYPE ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE - An array substrate for a gate-in-panel (GIP)-type organic light-emitting diode (OLED) display device is provided. A plurality of circuit blocks are formed on gate circuit units and separated into pixel lines in which respective gate lines are disposed, and a plurality of clock lines formed in each of signal input units. Each of the signal input units includes at least one group. Each of the groups includes the plurality of clock lines. Each of the circuit blocks includes one or two partial circuit blocks, which are sequentially disposed in a row in a lengthwise direction of the gate line in each of the pixel lines. Each of the partial circuit blocks is included in a signal input unit disposed most adjacent thereto, and connected to a clock line formed in one group disposed most adjacent thereto through a plurality of first connection lines. | 05-09-2013 |
20130113689 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes: a pixel array unit having pixels including a circuit configuration, in which a first electrode of an electro-optical element and a source electrode of a driving transistor are connected together, a gate electrode of the driving transistor and a source electrode or a drain electrode of a writing transistor are connected together, a holding capacitor is connected between the gate electrode and the source electrode, and an auxiliary capacitor is connected between the first electrode and a second electrode, disposed in a matrix shape. A signal line used for transmitting a video signal is disposed between adjacent pixels, and from one pixel of adjacent pixels to an area of the other pixel, the auxiliary capacitor of the one pixel is set to be disposed. One electrode of the auxiliary capacitor disposed on the signal line side is conductive with the second electrode of the electro-optical element. | 05-09-2013 |
20130135183 | Display Device, Electronic Device and Method of Driving Display Device - The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted. | 05-30-2013 |
20130141316 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - An organic light emitting diode (OLED) display device and a method of driving the same are provided. A time point at which each of transistors is turned on is controlled without using an additional transistor so that a node connected to a source electrode of a driver transistor can be floated, and a node connected to a gate electrode of the driver transistor can be initialized to an initialization voltage level. Thus, initialization characteristics can be improved to enhance degradation of response characteristics and luminance, and a threshold voltage of the driver transistor and occurrence of a ripple at a high-potential voltage terminal can be compensated. | 06-06-2013 |
20130147689 | PIXEL STRUCTURE OF ELECTROLUMINESCENT DISPLAY PANEL - A pixel structure of electroluminescent display panel has a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region. The pixel structure of electroluminescent display panel includes a first organic light-emitting layer, and a second organic light-emitting layer. The first organic light-emitting layer is disposed in the first sub-pixel region for generating a first primary color light in the first sub-pixel region. The second organic light-emitting layer is disposed in the second sub-pixel region, and the third sub-pixel region for generating a second primary color light in the second sub-pixel region, and for generating a third primary color light in the third sub-pixel region. The first sub-pixel region, the second sub-pixel region, and the third sub-pixel region have different cavity lengths. | 06-13-2013 |
20130147690 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE WITH SIGNAL LINES FOR CARRYING BOTH DATA SIGNAL AND SENSING SIGNAL - An organic light-emitting display device having a signal line that is shared by a first column of pixels and a second column of pixels to transmit a data signal and a sensing signal. The organic light-emitting display device includes a plurality of columns of pixels, and a plurality of signal lines extending between the plurality of columns of pixels. Each of the plurality of signal lines is configured to transmit a data signal from a data driver to the first column of pixels at first times. The data signals control the operation of an organic light-emitting element in the first column of pixels. The same signal line transmits a sensing signal from the second column of pixels to the data driver at second times. The sensing signal represents a variable property of an electrical component in a pixel of the second column of pixels. | 06-13-2013 |
20130147691 | DRIVING CIRCUIT OF A SEMICONDUCTOR DISPLAY DEVICE AND THE SEMICONDUCTOR DISPLAY DEVICE - There are provided a driving circuit of a semiconductor display device which can obtain an excellent picture without picture blur (display unevenness) and with high fineness/high resolution, and the semiconductor display device. A buffer circuit used in the driving circuit of the semiconductor display device is constituted by a plurality of TFTs each having a small channel width, and a plurality of such buffer circuits are connected in parallel with each other. | 06-13-2013 |
20130147692 | DISPLAY DEVICE - Any one of a write scanning line, a power source supply line, and a video signal line is structured as a subsidiary wiring disposed in the same layer as that having a lower electrode disposed therein. The subsidiary wiring is used in the power source supply line through which a power source drive pulse to be pulse-driven is transmitted, or other wirings (such as the write scanning line and the video signal line). | 06-13-2013 |
20130169516 | PIXEL CIRCUIT, DISPLAY APPARATUS AND DRIVING METHOD - A pixel circuit includes an energy storage element, a driving transistor, a first transistor and a second transistor. The driving transistor has a gate electrically connected with the energy storage element. The first transistor has a first terminal electrically connected with the energy storage element and the gate of the driving transistor, and a second terminal electrically connected with the first terminal of the driving transistor. The second transistor has a first terminal electrically connected with the first terminal of the driving transistor and the second terminal of the first transistor, and a second terminal connected with a data voltage or a first voltage. During a first stage, the gates of the first and second transistors receive a first signal and a second signal, respectively, and the data voltage or the first voltage charges the energy storage element via the first and second transistors. | 07-04-2013 |
20130176194 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF REPAIRING THE SAME - An organic light-emitting display apparatus includes a plurality of pixels, each defined by a scan line, a data line, and a power supply line, a plurality of control lines branching off of one wire in a first direction and simultaneously transferring control signals to the plurality of pixels; and a plurality of repair bridges placed between neighboring ones of the plurality of control lines, each of the plurality of repair bridges including a first bridge connected to one of the neighboring ones of the plurality of control lines and a second bridge connected to another one of the neighboring control lines. | 07-11-2013 |
20130187839 | ORGANIC LIGHT EMITTING DISPLAY DEVICES AND METHODS OF MANUFACTURING ORGANIC LIGHT EMITTING DISPLAY DEVICES - An organic light emitting display device includes a first substrate, an organic light emitting structure, a peripheral circuit, a recess, a black matrix and a polarization structure. The first substrate may include a display region and a peripheral region. The peripheral region may surround the display region or extend along at least one side of the display region. The organic light emitting structure may be disposed over a first face of the first substrate in the display region. The peripheral circuit may be disposed over the first face of the first substrate in the peripheral region. The recess may be disposed on a second face of the first substrate in the peripheral region. The black matrix may be disposed in the recess. The polarization structure may be disposed over the black matrix and the second face of the first substrate. | 07-25-2013 |
20130187840 | DISPLAY APPARATUS - Provided is a display apparatus including: a substrate; a first organic light emitting element; a second organic light emitting element; a first color filter; and a second color filter in which the first color filter has a refractive index larger than a refractive index of the second color filter; the first color filter and the second color filter are in contact with each other; and in a cross section taken along a direction perpendicular to the substrate, at a part at which the first color filter and the second color filter are in contact with each other, the first color filter has an angle between a side surface thereof and the substrate, which is more than 90 degrees, and the second color filter has an angle between a side surface thereof and the substrate, which is less than 90 degrees. | 07-25-2013 |
20130201085 | PIXEL STRUCTURE OF ORGANIC ELECTROLUMINESCENCE DEVICE - A pixel structure of an organic electroluminescence device includes a scan line, and a data line, a bias line and a readout line on a substrate, a first switch device, a capacitor, a driving device, an organic light emitting device, a second switch device and a photo sensor device. The first switch device is electrically connected to the scan line and the data line. The capacitor is electrically connected to the first switch device and the bias line. The driving device is electrically connected to the first switch device, the capacitor and the bias line. The organic light emitting device is electrically connected to the driving device. The second switch device is electrically connected to the scan line and the readout line. The photo sensor device is electrically connected to the second switch device and the bias line. | 08-08-2013 |
20130201086 | ACTIVE LIGHT EMITTING DEVICE - An active light emitting device disposed on a substrate is provided. The active light emitting device includes a scan line, a data line, a power line, a circuit unit, and a light emitting unit. The circuit unit is connected to the scan line, the data line, and the power line. The circuit unit at least includes an overlapping component which is at least partially overlapped with the power line. The light emitting unit is driven by the circuit unit. A light emitting region and a circuit region on the substrate are defined respectively by the light emitting unit and the circuit unit. | 08-08-2013 |
20130201087 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel includes a first transistor coupled between a first power source and a first node, the first transistor including a gate electrode coupled to a second node, an organic light emitting diode (OLED) coupled between the first node and a second power source, a second transistor for supplying a data signal to the second node in response to a scan signal, a third transistor having a source electrode and a drain electrode electrically coupled to each other, the third transistor being coupled to the first power source and the second node, and a fourth transistor having a source electrode and a drain electrode electrically coupled to each other, the fourth transistor being coupled between the second node and the first node. | 08-08-2013 |
20130241808 | DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - A DC-DC converter includes a first power source generator, the first power source generator including an input port and a first output port, the first power source generator being configured to receive an input power source to the input port, and being configured to generate a first power source, the first power source being output to the first output port, and a selecting unit, the selecting unit being configured to selectively transmit, to the first power source generator, one of: a feedback voltage, the feedback voltage being input from an external feedback wiring line via a feedback terminal, and a voltage of the first output port. | 09-19-2013 |
20130241809 | IMAGE DISPLAY AND ORGANIC LIGHT-EMITTING DISPLAY INCLUDING IMAGE SHIFT UNIT - An image display is disclosed. In one embodiment, the display includes a first display panel comprising i) a first image display portion configured to display a first image and ii) a light transmissive portion formed outside the first image display portion and configured to display a second image. The display further includes i) a second display panel spaced apart from the first display panel and configured to generate the second image and ii) an image shift unit configured to shift the generated second image toward the light transmissive portion of the first display panel so that the shifted second image is projected through the light transmissive portion. | 09-19-2013 |
20130257696 | FLAT PANEL DISPLAY APPARATUS - A flat panel display apparatus includes a first substrate, a display unit on the first substrate, a terminal unit on the first substrate and adjacent to an outer portion of the display unit; a second substrate on the first substrate and covering the display unit; and a flexible printed circuit board (PCB) on the second substrate and extending beyond an edge of the second substrate. The flexible PCB connects to the terminal unit and includes a curved unit that is bent between the terminal unit and the edge of the second substrate and is formed inside the periphery of the first substrate. | 10-03-2013 |
20130257697 | DISPLAY DEVICE AND OUTPUT BUFFER CIRCUIT FOR DRIVING THE SAME - Disclosed herein is a display device including: a plurality of pixel circuits; a power source line connected to corresponding ones of the plurality of pixel circuits; and an output buffer circuit for supplying currents to corresponding ones of the plurality of pixel circuits by alternately applying a first potential applied to a first power source supply terminal, and a second potential applied to a second power source supply terminal to the power source line. The output buffer includes a variable resistance circuit connected to a path between the first power source supply terminal and the power source line, the variable resistance circuit serving to change a resistance value thereof in accordance with a magnitude of a total sum of the currents. | 10-03-2013 |
20130265214 | ELECTROLUMINESCENT DISPLAY PANEL AND ELECTRONIC APPARATUS - An electroluminescent display panel has pixel circuits for an active matrix driving system. At least one of the pixel circuits has a thin-film transistor in which a portion of a pattern of a metal wiring material above a channel layer of the thin-film transistor is disposed to shield the channel region of the thin-film transistor. | 10-10-2013 |
20130300638 | ORGANIC COMPOUND, ORGANIC ELECTROLUMINESCENCE ELEMENT, AND IMAGE DISPLAY DEVICE - The present invention provides an organic electroluminescence element having a high luminous efficiency. | 11-14-2013 |
20130307759 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An OLED display that can suppress color characteristic variation according to an observation angle. An OLED display includes a display unit provided on a substrate having an organic light emitting element displaying an image and a color compensation filter provided on a light emission side of the display unit. The color compensation filter includes a transparent base and a plurality of dichroic dyes arranged along an optical axis that is parallel with a line normal to the substrate in the base. | 11-21-2013 |
20130321248 | Semiconductor Device and Method for Driving Semiconductor Device - By holding a voltage that depends on a video signal in a first capacitor, holding a voltage that depends on a threshold voltage of a transistor in a second capacitor, and then applying a total voltage of the voltage held in the first capacitor and the voltage held in the second capacitor between a source and a gate of the transistor, even when the threshold voltage varies, a current corresponding to the video signal can be supplied to a load. The voltage that depends on the video signal and the voltage that depends on the threshold voltage of the transistor are separately acquired. | 12-05-2013 |
20130321249 | Semiconductor Device and Method for Driving Semiconductor Device - One electrode of SW | 12-05-2013 |
20130321250 | PIXEL CIRCUIT, DISPLAY DEVICE, AND METHOD OF DRIVING PIXEL CIRCUIT - A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes, wherein a source of a TFT | 12-05-2013 |
20130328751 | Portable Frame-less Reversible Luminous Suction Cup Display - The invention provides a frameless, lightweight, bright light, portable display in the form of electroluminescence with multiple reversible mounting suction cups. The luminous unit comes in various sizes of which most are round in shape. Each unit contains a power plug, inverter, and the electroluminescent panel. However, each unit also includes a minimum of 3 suction cup extensions allowing for the unit to be reversible. This unit is able to be mounted on the inside of a window or the outside of a window/hard slick surface with the light facing same direction no matter which side of the glass it is mounted thereon. | 12-12-2013 |
20130335306 | ORGANIC LIGHT EMITTING DISPLAY PANEL AND METHOD FOR DRIVING THE SAME - The present invention provides an organic light-emitting display (OLED) panel and a method for driving the same. The OLED panel comprises pixel rows, data lines, scan lines and power lines, and each of the pixel rows includes pairs of first and second pixels, and the data lines cross the scan lines, and the power lines are arranged parallel to the pixel rows. When driving the first or second pixel, two of the scan lines are turned on at the same time, and the two turned-on scan lines are positioned at two opposite sides of the driven first or second pixel. | 12-19-2013 |
20130335307 | DISPLAYS WITH PIXEL CIRCUITS CAPABLE OF COMPENSATING FOR TRANSISTOR THRESHOLD VOLTAGE DRIFT - A display device includes a pixel array. The pixel array includes multiple pixel elements. At least one pixel element includes an OLED, a first transistor, a second transistor, a third transistor, a first capacitor and a second capacitor. The first transistor has a first terminal coupled to an anode of the OLED for driving the OLED. The second transistor is coupled between a second terminal of the first transistor and a reset voltage and has a control terminal receiving a reset signal. The third transistor is coupled between the anode of the OLED and a control terminal of the first transistor and has a control terminal receiving a compensation signal. The first capacitor is coupled between the control terminal of the first transistor and the anode of the OLED. The second capacitor is coupled to the first capacitor and the control terminal of the first transistor. | 12-19-2013 |
20140002331 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME | 01-02-2014 |
20140022149 | DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - There are disclosed a DC-DC converter and an organic light emitting display including the same. The DC-DC converter includes a first voltage generator that has an inductor and a plurality of transistors, and converts an input voltage into a first voltage and outputs the first voltage to a first output terminal. The DC-DC converter also includes a controller that controls driving of the first voltage generator by supplying a first driving pulse to each transistor of the first voltage generator. In the DC-DC converter, the amplitude of the first driving pulse is adjustable. Accordingly, it is possible to provide a DC-DC converter and an organic light emitting display including the same, which can achieve high power conversion efficiency by change a driving pulse used in a DC-DC converter. | 01-23-2014 |
20140022150 | ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE AND PIXEL CIRCUIT THEREOF - An OLED (Organic Light-Emitting Diode) display device and a pixel circuit thereof are disclosed. In a pixel circuit, a driving transistor driving an OLED is controlled for a reset operation and a compensation of the pixel circuit, by which a threshold voltage of the driving transistor is memorized on a control terminal of the driving transistor. In the compensation operation, a connection node between the driving transistor and the OLED is specially controlled. A switch circuit is provided in the pixel circuit. Based on a control signal, the switch circuit couples the connection node to a control voltage level. An enable interval of the control signal covers an enable interval of the reset operation and an enable interval of the compensation operation. | 01-23-2014 |
20140043217 | PIXEL ARRAY STRUCTURE AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - A pixel array structure of a display device, for example, an organic light emitting display device, includes a plurality of pixel units. In the pixel array structure, each of the pixel units includes four color pixels arranged in a lattice form, and a white sub-pixel positioned at the center of the pixel unit. The four pixels are disposed at a periphery of the pixel unit. In the pixel array structure, pixels are efficiently arranged in consideration of characteristics of the pixels. | 02-13-2014 |
20140049454 | Pixel and Organic Light Emitting Display Using the Same - A pixel capable of increasing a contrast ratio includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first node coupled to a first electrode thereof to the OLED coupled to a second electrode thereof so as to correspond to a voltage applied to a second node, a second transistor coupled between the second electrode of the first transistor and the OLED and turned off when an emission control signal is supplied to an emission control line, and a capacitor coupled between the second electrode of the first transistor and the emission control line. | 02-20-2014 |
20140049455 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display including a substrate, a scan line transferring a scan signal, a compensation control line transferring a compensation control signal, an operation control line applying an operation control signal, a data line and a driving voltage line transferring a data signal and a driving voltage, respectively, a switching thin film transistor (TFT) connected to the scan line and the data line, a compensation TFT and an initialization TFT connected to the compensation control line, an operation control TFT connected to the operation control line and the switching TFT, a driving TFT connected to the driving voltage line, an organic light emitting diode connected to a drain electrode of the driving TFT, and a hold capacitor connected between a source electrode of the operation control TFT and a gate electrode of the initialization TFT. | 02-20-2014 |
20140055325 | PIXEL UNIT DRIVING CIRCUIT AND METHOD THEREOF, PIXEL UNIT AND DISPLAY APPARATUS - A pixel unit driving circuit and a method thereof, a pixel unit and a display apparatus can improve uniformity in the brightness of an OLED panel. The pixel unit driving circuit comprises a driving thin film transistor (DTFT), a matching thin film transistor (MTFT), a signal-erasing thin film transistor (ETFT), a charging control unit ( | 02-27-2014 |
20140062843 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of displaying an image with uniform brightness is disclosed. In one aspect, the pixel includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current that flows from a first power supply to a second power supply via the OLED in response to a voltage applied to a first node. The pixel also includes a second transistor that is coupled between a bias power supply and the first node and whose gate electrode is coupled to an emission control line. The pixel further includes a third transistor that is coupled between an anode electrode of the OLED and a feedback line and whose gate electrode is coupled to a control line. | 03-06-2014 |
20140071027 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes a plurality of pixels, each pixel including an organic light emitting diode (OLED) and a driving transistor, a sustain power supply unit applying a first sustain voltage to a plurality of data lines connected to the plurality of pixels, and a data driver applying one of a data signal and a second sustain voltage to the plurality of data lines. For each pixel, the sustain power supply unit applies the first sustain voltage as a first level voltage to reset a gate voltage of the driving transistor and applies the first sustain voltage as a second level voltage to increase the gate voltage of the driving transistor. When an anode voltage of the OLED in each pixel is discharged to be reset, the anode voltage of the OLED is controlled according to a voltage difference between the first level voltage and the second level voltage. | 03-13-2014 |
20140104145 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE - The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced. | 04-17-2014 |
20140111402 | ORGANIC LIGHT EMITTING DISPLAY DEVICE, AND METHOD OF GENERATING A GAMMA REFERENCE VOLTAGE FOR THE SAME - An organic light emitting display device includes a scan driving unit configured to provide a scan signal to pixel circuits via a plurality of scan lines, a data driving unit configured to provide a data signal to the pixel circuits via a plurality of data lines, a power unit configured to provide a first power voltage and a second power voltage to the pixel circuits, the first power voltage being greater than the second power voltage, a gamma reference voltage generating unit configured to generate a gamma reference voltage corresponding to a voltage difference between the first power voltage and a subtraction reference voltage, a gamma voltage generating unit configured to generate a plurality of gamma voltages based on the gamma reference voltage, and to provide the gamma voltages to the data driving unit, and a timing control unit. | 04-24-2014 |
20140111403 | Shift Register Unit, Shift Register Circuit, Array Substrate And Display Device - A shift register unit, a shift register circuit, an array substrate and a display device are provided. The present disclosure relates to the field of display device manufacture, and can prevent an OLED device from flickering while writing display data. A shift register comprises a first pull-up unit, connected with a high level end, a first clock signal end and a first control node (A); a first pull-down unit, connected with a low level end, a second clock signal end, an input signal end, the first pull-up unit, a first output end and the first control node (A); a pull-down switch unit, connected with the high level end, the low level end, the first clock signal end, the second clock signal end and a second control node (B); a second pull-down unit, connected with the low level end, the second control node (B) and a second output end; and a second pull-up unit, connected with the high level end, the first control node (A) and the second output end. | 04-24-2014 |
20140111404 | DISPLAY APPARATUS - According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit. | 04-24-2014 |
20140118227 | DISPLAY APPARATUS AND CONTROL METHOD THEREOF - A display apparatus and control method are provided. The display apparatus includes a transparent display panel, an image processor that processes an image signal to display an image on the transparent display panel based on the processed image signal, a sensor which senses a user located in front of and behind the transparent display panel. The display apparatus includes a controller that determines by the sensor whether a user is located in front of, or behind, the transparent display panel if the image is displayed on the transparent display panel to be normally recognized by a user located in front of the transparent display panel. The controller controls the image processor to selectively display on the transparent display panel a reverse image of the image to be normally recognized by a user located behind the transparent display panel according to the determination. | 05-01-2014 |
20140125565 | DEVICE AND METHOD FOR IMPROVING AMOLED DRIVING - Devices and methods for increasing the aperture ratio and providing more precise gray level control to pixels in an active matrix organic light emitting diode (AMOLED) display are provided. By way of example, one embodiment includes disposing a gate insulator and an interlayer dielectric material between a gate electrode of a thin-film transistor of a driving circuit and a channel of the thin-film transistor. The improved structure of the driving circuit facilitates a higher voltage range for controlling the gray level of the pixels, and may increase the aperture ratio of the pixels. | 05-08-2014 |
20140125566 | ELECTROLUMINESCENT DISPLAY PANEL AND ELECTRONIC APPARATUS - An electroluminescent display panel has pixel circuits for an active matrix driving system. At least one of the pixel circuits has a thin-film transistor in which a portion of a pattern of a metal wiring material above a channel layer of the thin-film transistor is disposed to shield the channel region of the thin-film transistor. | 05-08-2014 |
20140132488 | DISPLAY DEVICE HAVING BENT NON-DISPLAY AREA FOR REDUCED BEZEL WIDTH - The present disclosure relates to a display panel having a structure in which the left and right lateral side bezel areas are bent downward to reduce the width of bezel area visible to a user. The display device includes a transparent cover plate and a flexible display layer secured to the transparent cover plate. The transparent cover includes a flat portion. The flexible display layer includes a display area and a non-display area. The display area includes an upper flat area extending along a first plane below the flat portion of the transparent cover plate. The non-display area extends from at least an edge of the display area and at least part of the non-display area extends along a second plane for connection to receive a signal for displaying an image on the flexible display layer. A signal line between a signal source and the non-display area transmit the signal from the signal source to the non-display area. | 05-15-2014 |
20140132489 | DISPLAY APPARATUS WITH SELF-LUMINOUS DISPLAY PANEL - A display apparatus having a self-luminous display panel is provided. The self-luminous display panel including: a first electrode layer; a second electrode layer; a substrate which is disposed on a light-emitting surface of the second electrode layer; a light emitting layer which is interposed between the first electrode layer and the second electrode layer, and generates light based on holes and electrons transmitted by voltages applied to the first electrode layer and the second electrode layer; and a linear grid layer which is interposed between the substrate and the second electrode layer, and including linear grids arranged at a predetermined pitch in order to polarize and filter light generated by the light emitting layer and emitted through the substrate. | 05-15-2014 |
20140132490 | OLED DISPLAY PANEL, DRIVING CIRCUIT, AND DRIVING METHOD - The present invention relates to the field of organic light emitting diode (OLED) display, and provides an OLED display panel, a driving circuit, a driving method and a display device. The OLED display panel comprises: a first transparent substrate and a second transparent substrate arranged opposite to each other; an OLED array formed on one face of the first transparent substrate facing the second transparent substrate, and an optical display array and a first optical film formed on the other face of the first transparent substrate; and a second optical film formed on one face of the second transparent substrate opposite to the first transparent substrate, and an optical display array formed on the other face of the second transparent substrate, wherein the first and second optical films can be switched between a non-opaque status and an opaque status. According to the present invention, it is able to achieve double-sided display of the OLED display panel. | 05-15-2014 |
20140139408 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel includes an organic light emitting diode (OLED), a first transistor having a gate electrode coupled to a first node, a first electrode coupled to a first power supply, and a second electrode coupled to the OLED, a first capacitor for storing a data signal, and a second capacitor coupled between the first node and the second electrode of the first transistor to charge a voltage corresponding to the data signal and a threshold voltage of the first transistor, wherein, in a period where a voltage stored in the first capacitor is supplied to the first node, the second capacitor is electrically blocked from the first node. | 05-22-2014 |
20140139409 | DISPLAY MODULE - Organic EL display module including a pixel disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and a current supply line that supplies electric current to the pixel, wherein the pixel includes an active device selected by the scanning line, a data storage device that stores a data signal that is supplied from the data line by control of the active device, and an organic light emitting device that emits light by the electric current supplied by the current supply line according to the data signal stored in the data storage device, wherein the data storage device provides a lower electrode, an insulating layer and an upper electrode, and wherein the lower electrode has a same layer with a channel layer of the active device and the upper electrode is made of a metal material. | 05-22-2014 |
20140176400 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - Disclosed are an organic light emitting display device and a method of driving the same. The organic light emitting display device includes a display panel including a plurality of pixels including a pixel circuit for emitting light from an organic light emitting diode and a driving circuit unit driving the display panel. The driving method includes sensing a characteristic of a driving TFT of each of the pixels of the display panel to generate sensing data according to a user's setting using an input device, at a predetermined compensation driving time, or when an error occurs in sensing data generated by real-time sensing of each pixel of the display panel, and compensating for the characteristic of the driving TFT of each pixel by using the sensing data. | 06-26-2014 |
20140176401 | METHOD OF DRIVING ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes a display panel having a plurality of pixels provided with a pixel circuit to operate an organic light emitting diode, and a driving circuit to drive the display panel, wherein ‘n’ horizontal sensing lines are formed in the display panel, and a method for driving the display device includes: dividing the ‘n’ horizontal sensing lines formed in the display panel into a plurality of blocks; and sequentially or non-sequentially sensing the plurality of blocks via the sensing lines, wherein the plurality of blocks are sensed in order from the first to the last of the ‘n’ sensing lines by a sequential or non-sequential method. | 06-26-2014 |
20140191931 | FLAT PANEL DISPLAY DEVICE - A flat panel display device includes a pixel unit having scan-lines, data-lines, and first through third pixels that are coupled to the scan-lines and the data-lines, a scan driver that applies a scan signal to the pixel unit, a data driver that selectively applies a first data signal, a second data signal, a third data signal, and an initialization signal to the pixel unit, a demultiplexing unit having at least one demultiplexer that applies the first data signal, the second data signal, and the third data signal to the first pixels, the second pixels, and the third pixels, respectively, and that simultaneously applies the initialization signal to the first through third pixels, and a timing control unit that controls the scan driver, the data driver, and the demultiplexing unit. | 07-10-2014 |
20140218270 | DISPLAY DEVICE, DRIVING METHOD OF DISPLAY DEVICE, AND ELECTRONIC APPARATUS - The driving method of the display device having a driving transistor in at least one of the pixels, includes providing a display frame period consisting of a first period and a second period, a duration of the second period being longer than the first period and being set as the first period subtracted from the display frame period. The driving method also includes performing a threshold correction for the driving transistor during the first period and writing a signal voltage for the pixel during the second period. | 08-07-2014 |
20140218271 | DISPLAY APPARATUS - Disclosed herein is a display apparatus has a pixel array section including: pixel circuits which are each provided with a driving transistor and an electro-optical device and are laid out to form a matrix; and a draw wire provided in each of the pixel circuits to serve as a wire connecting the driving transistor to a power-supply providing line, wherein the resistance of the draw wire is relatively large in the pixel circuit close to a source applying a power-supply voltage to the power-supply providing line. | 08-07-2014 |
20140240206 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line. | 08-28-2014 |
20140247200 | DISPLAY, DISPLAY DRIVE METHOD, METHOD OF MANUFACTURING DISPLAY, AND ELECTRONIC APPARATUS - A display unit includes a plurality of display function layers provided in a stacking direction, and each including a plurality of pixel circuits. A pixel circuit group configured by predetermined number of the pixel circuits configures a single display pixel, and the predetermined number of the pixel circuits spans the plurality of display function layers. | 09-04-2014 |
20140247201 | DISPLAY PANEL AND PANEL INSPECTION APPARATUS - Disclosed herein is a display panel based on active matrix driving having a display area made up of N pixel control lines, M video signal lines orthogonally intersecting the N pixel control lines, and pixel circuits arranged at intersections between the N pixel control lines and M video signal lines, wherein positional identification patterns are arranged on every k (k being a natural number) pixel control lines inside each of the pixel circuits. | 09-04-2014 |
20140266993 | DISPLAY DEVICE - A display device includes: a display panel including: a display portion for displaying an image; and a first pad coupled with the display portion and for receiving an out signal from the display portion; a driver coupled with the display portion for supplying a driving signal to the display portion; a cover covering the display panel; and a connection unit coupling the first pad and the driver to each other to transmit the out signal to the driver, wherein at least a portion of the connection unit is in the cover. | 09-18-2014 |
20140266994 | STABLE DRIVING SCHEME FOR ACTIVE MATRIX DISPLAYS - A method and system for operating a pixel array having at least one pixel circuit is provided. The method includes repeating an operation cycle defining a frame period for a pixel circuit, including at each frame period, programming the pixel circuit, driving the pixel circuit, and relaxing a stress effect on the pixel circuit, prior to a next frame period. The system includes a pixel array including a plurality of pixel circuits and a plurality of lines for operation of the plurality of pixel circuits. Each of the pixel circuits includes a light emitting device, a storage capacitor, and a drive circuit connected to the light emitting device and the storage capacitor. The system includes a drive for operating the plurality of lines to repeat an operation cycle having a frame period so that each of the operation cycle comprises a programming cycle, a driving cycle and a relaxing cycle for relaxing a stress on a pixel circuit, prior to a next frame period. | 09-18-2014 |
20140285406 | GRAY-SCALE VOLTAGE GENERATING CIRCUIT AND DISPLAY UNIT - A gray-scale voltage generating circuit includes: a ladder resistor circuit including a plurality of resistors connected in series to one another, and configured to output a plurality of gray-scale voltages with different voltage values from ends of the respective resistors; and a constant current source configured to be connected in series to the ladder resistor circuit, in which the constant current source includes a current source transistor configured to be connected in series to the ladder resistor circuit, and a voltage setting section configured to select one voltage from the plurality of voltages and set the selected voltage as a voltage determining a current that is to flow through the current source transistor. | 09-25-2014 |
20140285407 | SYSTEM AND METHODS FOR EXTRACTION OF THRESHOLD AND MOBILITY PARAMETERS IN AMOLED DISPLAYS - A system extracts effective parameters from a pixel circuit that includes a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal. The system measures the value of at least one operating parameter of the pixel circuit at a plurality of levels, and then extracts the value of at least one related parameter of the pixel circuit, based on the measured values of the at least one operating parameter. The measured values of the operating parameter are translated to effective values for driving the pixel circuit, based on the extracted value. Then effective parameters for driving effective devices in the pixel circuit are extracted, based on the translated values, and stored for use in compensating input signals to the pixel circuit. | 09-25-2014 |
20140285408 | IMAGE DISPLAY - Herein disclosed an image display including: row scan lines configured to supply a control signal; column signal lines configured to supply a video signal; and pixel circuits configured to be disposed at intersections between the scan lines and the signal lines, wherein each of the pixel circuits has at least a drive transistor, a sampling transistor connected to a gate of the drive transistor, a capacitive part connected between the gate and a source of the drive transistor, and a light-emitting element connected to the source of the drive transistor. | 09-25-2014 |
20140285409 | DISPLAY DEVICE THAT SWITCHES LIGHT EMISSION STATES MULTIPLE TIMES DURING ONE FIELD PERIOD - A scan driving circuit includes a shift register unit and a logic circuit unit. The start of a start pulse of an output signal ST | 09-25-2014 |
20140285410 | Display Device - A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurality of current supply lines extending parallel to each other. Each current supply line is connected to a plurality of driving transistors in a line. One end of each current supply line is connected to the first current input terminal via a first wiring intersecting with the current supply lines, and the other end thereof is connected to the second current input terminal via a second wiring intersecting with the current supply lines. Accordingly, a current is supplied to each current supply line from both the first and. the second current input terminals. The first and the second current input terminals are provided separately from each other. | 09-25-2014 |
20140292621 | DISPLAY DEVICE - A display device includes a display module and a protective member that accommodates the display module. The protective member includes a first curved-line part extending in a horizontal direction and curved to have a concave surface on the top, a second curved-line part spaced apart from the first curved-line part to face the first curved-line part, formed below the first curved-line part, extending in the horizontal direction, and have a concave surface on the bottom, and connection parts that connect the first curved-line part and the second curved-line part to define an opening portion through which the portion of a display area is exposed. The display area comprises a display part exposed through the opening portion to display the effective image, a first peripheral part overlapped with the first curved-line part, and a second peripheral part overlapped with the second curved-line part. | 10-02-2014 |
20140306867 | PIXEL CIRCUIT, DRIVING METHOD THEREFOR AND DISPLAY DEVICE - Provided are a pixel circuit, a driving method for the pixel circuit and a display device including the pixel circuit. In the pixel circuit, when the data is written to the storage capacitor, the threshold voltage of the driving transistor and the data voltage are pre-stored in the storage capacitor by means of a diode connection formed by the driving transistor, so that the drift of the threshold voltage can be compensated effectively, and thus the uniformity and the stability of the driving current are maintained. Further, in the embodiment of the present disclosure, the scan signal for the pixel circuit is multiplexed in the touch circuit, and the coupling capacitor in the touch circuit is charged simultaneously while the storage capacitor is charged, and thus, the integration of the touch circuit into the pixel circuit can be realized perfectly without increasing the complexity of the circuit structure and the operation thereof. | 10-16-2014 |
20140313106 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting diode (OLED) display device includes a plurality of pixels each having a pixel circuit and an organic light emitting diode coupled to the pixel circuit. The OLED display device includes a scan driver which is configured to supply a scan signal to the scan lines and to supply an emission control signal to an emission control line commonly coupled to the pixels. The OLED display device also includes repair lines and repair circuits coupled to the repair lines. The repair circuits each have an output terminal coupled to an organic light emitting diode in corresponding pixel. A switching unit is configured to allow output lines of the data driver to be selectively coupled to the repair lines or the data lines. | 10-23-2014 |
20140313107 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME - There are provided a pixel and an organic light emitting display device having the same which can be repaired. The pixel includes a plurality of lines configured to include a scan line, a data line and a first power line, the plurality of lines arranged in a first or second direction; a pixel circuit coupled to the lines; and an organic light emitting diode coupled between the pixel circuit and a second power source. A first line disposed in the first direction among the lines intersects while overlapping with a second line disposed in the second direction among the lines or one or more electrodes on another layer, and the first line is divided to have a plurality of paths in at least one region in the overlapping region of the first line with the second line or the one or more electrodes. | 10-23-2014 |
20140313108 | SCAN DRIVER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME - A scan driver including a plurality of scan driving circuit units for outputting scan signals and a buffer unit for receiving a control signal input to a first scan driving circuit unit of the plurality of scan driving circuit units to output the received control signal to a second scan driving circuit unit of the plurality of scan driving circuit units. | 10-23-2014 |
20140313109 | DISPLAY DEVICE AND CONTROL METHOD THEREOF - Plural pixel circuits of a display device each include: a drive transistor having drain or source connected to a first power source voltage; a first capacitive element having a first electrode connected to a gate of the drive transistor and a second electrode connected to the source of the drive transistor; a second capacitive element having a first electrode connected to the second electrode of the first capacitive element and a second electrode directly connected to a data line that transmits a voltage corresponding to a light-emitting luminance; a first switching element that switches between conduction and non-conduction between the gate of the drive transistor and a fixed reference voltage; and a light-emitting device having a first electrode connected to source or drain of the drive transistor and a second electrode connected to a second power source voltage. | 10-23-2014 |
20140320384 | IMAGE DISPLAY - Herein disclosed an image display including: row scan lines configured to supply a control signal; column signal lines configured to supply a video signal; and pixel circuits configured to be disposed at intersections between the scan lines and the signal lines, wherein each of the pixel circuits has at least a drive transistor, a sampling transistor connected to a gate of the drive transistor, a capacitive part connected between the gate and a source of the drive transistor, and a light-emitting element connected to the source of the drive transistor. | 10-30-2014 |
20140333512 | PIXEL AND ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE USING THE SAME - A pixel circuit for an organic light emitting diode (OLED) display is disclosed. One inventive aspect includes an organic light emitting diode, a first transistor, a storage unit, a second transistor and a third transistor. The first transistor controls the amount of current flowing from a first power source coupled to a second power source via a second node and the organic light emitting diode in response to a voltage at a first node. The storage unit is connected to a data line, and stores a data signal from the data line. The second transistor is connected to a fourth node and the first node and is turned on when a second control signal is supplied. The third transistor is connected to the first node and a third node and is turned on when a third control signal is supplied. | 11-13-2014 |
20140333513 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display unit includes data lines, first scan lines, second scan lines, light emission control lines and pixels, where each pixel is connected to a corresponding data line of the data lines, a corresponding first scan line of the first scan lines, a corresponding second scan line of the second scan lines and a corresponding light emission control line of the light emission control lines; a scan driver configured to transfer first scan signals to the first scan lines, and transfer second scan signals to the second scan lines, respectively; a data driver configured to transfer data signals to the data lines, respectively; and a light emission control driver configured to transfer light emission control signals to the light emission control lines, respectively, in which the scan driver transfers the second scan signals substantially simultaneously to at least two second scan lines among the second scan lines. | 11-13-2014 |
20140340288 | DISPLAY DEVICE - A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage-capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage-capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction; and with the control unit, buffer transistors for outputting a pulse signal for sampling to an input video signal to each signal line are arrayed in a column in the longitudinal direction of the laser beam irradiation. | 11-20-2014 |
20140340289 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device including: a plurality of sub-pixels arranged in a matrix, each including an electro-optical element having a structure in which a display functional layer is sandwiched between an upper electrode and a lower electrode; and an auxiliary interconnect contact in a pixel area in which the plurality of sub-pixels are arranged in a matrix and electrically connecting the upper electrode to an auxiliary interconnect, wherein m (m is an integer equal to or larger than two) sub-pixels adjacent to each other along an arrangement direction of the sub-pixels are regarded as one group, and n (n is a natural number smaller than m) auxiliary interconnect contacts are formed for each group. | 11-20-2014 |
20140347253 | COMPENSATION UNIT AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - A compensation unit includes a current source unit, a current sink unit, a sensing resistor, a comparator, and a memory. The current source unit is configured to supply a first reference current to a first node. The current sink unit is configured to sink a second reference current from the first node. The sensing resistor is coupled between the first node and a second node. The comparator is configured to: compare a voltage at the first node with a voltage at the second node, and output a comparison result signal based on the comparison. The memory unit is configured to: store compensation data related to operational disparity of at least one organic light emitting diode and/or of at least one driving transistor, output the compensation data, and modify the compensation data based on the comparison result signal. | 11-27-2014 |
20140347254 | EL DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC EQUIPMENT PROVIDED WITH THE EL DISPLAY DEVICE - An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and non-luminescence of an EL element ( | 11-27-2014 |
20140354517 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes an organic light emitting diode (OLED) having a cathode electrode coupled to a second power supply, a pixel circuit configured to control an amount of current supplied to the OLED to correspond to a previous data signal, and a driver configured to store a present data signal supplied from a data line and to supply the previous data signal to the pixel circuit. The OLED, pixel circuit, and driver may be controlled by signals in a frame that includes first through fourth periods, the second power supply may be set to a first voltage in the first and second periods and to a second voltage in the third and fourth periods, and the first voltage may be a voltage at which the OLED does not emit light and the second voltage may be a voltage at which the OLED emits light. | 12-04-2014 |
20140354518 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes a plurality of organic light emitting diodes, each of which including a cathode electrode coupled to a second power source, a pixel circuit coupled to a scan line and to a data line, the pixel circuit configured to control current supplied from a first power source to the organic light emitting diodes corresponding to a data signal supplied to the data line, and first transistors between the pixel circuit and respective ones of the organic light emitting diodes, the first transistors configured to be turned on or to be turned off when a low emission control signal is supplied to a first emission control line, wherein a scan signal supplied to the scan line is a first voltage, and wherein the low emission control signal is a second voltage that is different than the first voltage. | 12-04-2014 |
20140354519 | DISPLAY APPARATUS - A display apparatus including a display module, and a drive device to deform the display module, is provided. The drive device switches the display module between a planar state and a curved state in which at least one lateral end of the display module protrudes forward. As such, the user may use the display module both in a planar state and a curved state. | 12-04-2014 |
20140361958 | ORGANIC LIGHT-EMITTING DIODE DISPLAY - An organic light-emitting diode display including: a display panel; a bezel on which the display panel is mounted; and a buffer disposed between a lower surface of the display panel and the bezel. The buffer includes a peripheral buffer and a central buffer that has a step-shaped structure. The peripheral buffer is disposed at first and second sides of the central buffer. | 12-11-2014 |
20140361959 | DISPLAY DEVICE - In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other. | 12-11-2014 |
20140361960 | PIXEL CIRCUIT AND DISPLAY DEVICE - A pixel circuit includes: a light emitting element; an n-channel drive transistor T | 12-11-2014 |
20140361961 | EL DISPLAY DEVICE AND PRODUCTION METHOD THEREFOR - An EL display device includes an EL display panel including a plurality of pixels each having an EL element. Each of the pixels has: driving transistor that supplies a current to EL element; first switching transistor; and second switching transistors that supply video signals to the pixel. The EL display device also includes: gate driver circuit that is formed and disposed along with pixels on the EL display panel; and gate driver IC that is externally connected to gate signal lines. Gate driver circuit is connected to a gate terminal of first switching transistor, and gate driver IC is connected to gate terminals of second switching transistors. | 12-11-2014 |
20140361962 | DISPLAY DEVICE - Any one of a write scanning line, a power source supply line, and a video signal line is structured as a subsidiary wiring disposed in the same layer as that having a lower electrode disposed therein. The subsidiary wiring is used in the power source supply line through which a power source drive pulse to be pulse-driven is transmitted, or other wirings (such as the write scanning line and the video signal line). | 12-11-2014 |
20140368413 | DISPLAY APPARATUS AND DRIVING METHOD THEREFOR - A display apparatus disclosed herein includes a plurality of pixel circuits each having a plurality of switches configured to receive a driving signal of a predetermined period and be controlled for opening and closing operation by the driving signal; and a drive circuit configured to control the open/closed state of the switches; the drive circuit being operable to scan the pixel circuits and open and close the switches in periods independent of each other. | 12-18-2014 |
20150009104 | ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY - An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of pixels arranged in a first direction and a second direction. Each of the pixels includes a first sub-pixel having a substantially isosceles triangle and a second sub-pixel having a substantially isosceles triangle shape, wherein the second sub-pixel is inverted with respect to the first sub-pixel. Each of the pixels also includes a third sub-pixel and a fourth sub-pixel each having a substantially right triangle shape, wherein the fourth sub-pixel is inverted with respect to the third sub-pixel. Two pixels adjacent to each other in the first direction are symmetric about an axis of symmetry that is parallel with the second direction, and two pixels adjacent to each other along the second direction are symmetric about an axis of symmetry that is parallel with the first direction. | 01-08-2015 |
20150009105 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - Provided is an active matrix display device using an organic EL panel including: a plurality of pixel circuits each including an organic light emitting diode arranged in a pixel region of the organic EL panel and a plurality of transistors configured to drive the organic light emitting diode; a plurality of scanning lines arranged along a first direction in the organic EL panel; and a plurality of data lines arranged along a second direction that is orthogonal to the first direction. In at least one set of pixel circuits that are adjacent in the first direction, gate electrodes and impurity diffusion regions of the plurality of transistors have an axisymmetric layout. Gate electrodes of at least one set of transistors that are symmetrically arranged in the at least one set of pixel circuits are integrated. | 01-08-2015 |
20150015464 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device including a pixel unit, a scan driver, a data driver and a timing controller. The pixel unit includes pixels positioned at intersection portions of scan lines and data lines, and an organic light emitting diode and a pixel circuit are formed in each pixel. The scan driver supplies a scan signal to the scan lines. The data driver supplies a data signal to the data lines. The timing controller supplies a scan control signal to the scan driver and supplies display data and a data control signal to the data driver. In the organic light emitting display device, each organic light emitting diode included in at least some of the pixels is driven by being coupled to a pixel circuit formed in an adjacent pixel. | 01-15-2015 |
20150015465 | UNIT PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME - A unit pixel includes a first sub-pixel that emits a first color light, a second sub-pixel that emits a second color light, a third sub-pixel that emits a third color light, and a fourth sub-pixel that emits a fourth color light. Here, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are arranged in a rhombus structure. | 01-15-2015 |
20150022428 | SHIFT REGISTER CIRCUIT - A shift register circuit for driving an OLED display panel is provided. The shift register circuit includes a plurality of circuit stages connected in series. Each circuit stage includes two shift registers and an enable-signal generator circuit. Each shift register includes two transistors, an input unit and a disable unit. The enable-signal generator circuit is configured to generate an enable signal according to the signals at the control terminals of the four transistors in the two shift registers. | 01-22-2015 |
20150035729 | OLED DISPLAY PANEL - An OLED display panel includes a plurality of spaced first pixels and a plurality of spaced second pixels arranged in rows and columns. Each of the first pixels includes a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel, the second sub-pixel and the third sub-pixel of each first pixel are substantially parallel to and spaced from each other. Each of the second pixels includes a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel, the second sub-pixel and the third sub-pixel of each second pixel are substantially parallel to and spaced from each other. The first pixels and the second pixels are arranged in alternate pattern in one row, and the first pixels and the second pixels are arranged in alternate pattern in one column | 02-05-2015 |
20150035730 | OLED DISPLAY PANEL - An OLED display panel includes a plurality of spaced first pixels and a plurality of spaced second pixels spaced from each other. Each of the first pixel and the second pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel, the second sub-pixel and the third sub-pixel are parallel to and spaced from each other. The first pixels and the second pixels are arranged in alternate pattern in one row. Of one first pixel and adjacent two second pixels of one row, the first sub-pixel of the first pixel is aligned with the first sub-pixel of the one second pixel, and the third sub-pixel of the first pixel is aligned with the third sub-pixel of the other one second pixel. | 02-05-2015 |
20150035731 | OLED DISPLAY PANEL - An organic light emitting diode (OLED) display panel includes a plurality of pixels spaced from each other. Each of the pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel, the second sub-pixel, and the third sub-pixel of each pixel are all rhombus shaped. The first sub-pixel, the second sub-pixel, and the third sub-pixel spaced from each other by three barriers. The three barriers are connected with each other in a Y-shaped pattern. An angle defined by two adjacent barriers is about 120 degrees. | 02-05-2015 |
20150035732 | STAGE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A stage includes an output unit configured to supply a scan signal to an output terminal according to voltages of first and second nodes; a first driver configured to control the voltages of the first and second nodes so that when a start signal or an output signal of a previous stage is supplied to a first input terminal, the scan signal is supplied from the output unit; and a second driver configured to control the voltages of the first and second nodes, corresponding to signals supplied to a second input terminal, a fourth input terminal and a fifth input terminal, wherein the second driver comprises eighth and ninth transistors coupled in series between the output terminal and the second node, and wherein a gate electrode of the eighth transistor is coupled to the first node, and a gate electrode of the ninth transistor is coupled to the fourth input terminal. | 02-05-2015 |
20150035733 | STAGE CIRCUIT AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A driver includes a first circuit to output a scan signal and a second circuit to output an emission control signal. The first circuit outputs the scan signal based on a first set of clock signals, and the second circuit outputs the emission control signal based on a second set of clock signals. The first set of clock signals and the second set of clock signals have at least one same clock signal and at least one different clock signal. The second circuit receives the scan signal and outputs the emission control signal based on the scan signal. The first circuit may be a scan driver and the second circuit may be an emission control driver of a display device. | 02-05-2015 |
20150035734 | Display Device Using a Demultiplexer Circuit - A display device is disclosed to include a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels coupled to the data lines and gate lines. The data lines include first and second data lines, and the pixels include first and second color pixels. The display device also includes a data driving circuit to generate data voltages through a plurality of output channels, a gate driving circuit coupled to the gate lines, and a timing controller to generate control signals to the data driving circuit and the gate driving circuit. The display device further includes a demultiplexer switching circuit with first demux switches to supply, when turned on, the data voltages from the output channels to the first data lines, and second demux switches to supply, when turned on, the data voltages from the output channels to the second data lines. | 02-05-2015 |
20150049006 | PIXEL CIRCUIT OF ORGANIC LIGHT EMITTING DIODE - A pixel circuit of an organic light emitting diode (OLED) is provided. The pixel circuit includes an OLED, a first transistor, a second transistor and a capacitor. The OLED receives a first voltage. A terminal of the first transistor is coupled to the OLED, and another terminal of the first transistor receives a second voltage. A terminal of the second transistor is coupled to the terminal of the first transistor, another terminal of the second transistor is coupled to a control terminal of the first transistor, a control terminal of the second transistor receives a scan signal. The capacitor is coupled between the control terminal of the first transistor and a third voltage. When the scan signal is enabled, the second voltage is set to a data voltage, the third voltage is set to a reference voltage, and the first voltage is set to a low voltage. | 02-19-2015 |
20150049007 | PIXEL DRIVING CIRCUIT OF ORGANIC-LIGHT EMITTING DIODE - A pixel driving circuit of an organic light emitting diode includes a first transistor including a first terminal, a control terminal and a second terminal and a capacitor including a first terminal and a second terminal. The first terminal and the second terminal of the capacitor are electrically coupled to the first terminal and the control terminal of the first transistor at a first node and a second node respectively. In a first period, a power source does not provide a power supply voltage to the first node, and a data voltage and a variable voltage are written in the first node and the second node respectively. In a second period, the power source provides the power supply voltage to the first node. The first transistor provides a driving current to an organic light emitting diode based on the voltage of the first node and the second node. | 02-19-2015 |
20150054718 | PIXEL CIRCUIT AND DISPLAY DEVICE USING THE SAME - Exemplary embodiments of the present invention relates to a pixel circuit for displaying an image of uniform luminance. The pixel circuit comprising an organic light emitting diode (OLED), an RS trigger comprising a first terminal connected to a scan line, a second terminal connected to an enable line, and a third terminal connected to a data line, the RS trigger configured to generate an output signal according to an enable signal, a data signal, and a scan signal respectively received via the enable line, the data line, and the scan line, and a driving transistor comprising a first electrode connected to a first power source, a second electrode connected to an anode of the OLED, and a gate electrode connected to an output terminal of the RS trigger, the driver transistor configured to control a current flowing through the OLED in response to the output signal of the RS trigger. | 02-26-2015 |
20150054719 | Organic Light Emitting Diode Display Device - An organic light emitting diode display device includes a plurality of pixels each including a plurality sub-pixels, the plurality of sub-pixels in each pixel arranged along a first direction; and a signal line providing a signal to each of the plurality of sub-pixels, wherein each of the plurality of sub-pixels includes an emission part and a transparent part arranged along a second direction being perpendicular to the first direction, and the emission part is connected to the signal line to receive the signal, and wherein the emission parts in adjacent sub-pixels along the first direction are arranged in a checkerboard pattern. | 02-26-2015 |
20150054720 | ORGANIC EL DISPLAY DEVICE - An object of the present invention is to, in an organic EL display device in which an initialization voltage is applied, extend the time period usable to write a video voltage as compared with the conventional art. In order to achieve this object, the organic EL display device includes a plurality of pixels each including an organic EL element; a plurality of video lines that supply a video voltage to each of the plurality of pixels; a plurality of scanning lines that supply a scanning voltage to each of the plurality of pixels; a unit that supplies a selection scanning voltage concurrently to an N number of scanning lines among the plurality of scanning lines, and supplies an initialization voltage to each of the plurality of video lines, in a k'th scanning period; and a unit that supplies a selection scanning voltage sequentially to the N number of scanning lines, and supplies video voltages to each of the plurality of video lines, in (k+1)th through (k+N)th scanning periods respectively. N is an integer of 2 or greater (2≦N) and k is any positive integer. | 02-26-2015 |
20150061978 | PIXEL ARRANGEMENT OF COLOR DISPLAY APPARATUS - An aspect of the disclosure relates to a color display apparatus, which includes a plurality of pixels P(i, j) arranged in a matrix having M columns and N rows, where i=1, 2, . . . , M, j=1, 2 . . . , N, and M and N are positive integers. A plurality of pixel pairs is defined along either the columns or the rows, and each pixel pair includes one pixel P(i, j) and the next immediate pixel, where if i is an odd integer, j is an odd integer, and if i is an even integer, j is an even integer. Each pixel pair has five subpixels, including a first subpixel configured to display a first color and symmetrically positioned across the pixels, a pair of second subpixels configured to display a second color and symmetrically positioned in the pixels respectively, and a pair of third subpixels configured to display a third color and symmetrically positioned in the pixels respectively, where the first subpixel is positioned between the pair of second subpixels. | 03-05-2015 |
20150061979 | DISPLAY PANEL, METHOD OF DRIVING THE SAME, AND ELECTRONIC APPARATUS - A display unit includes: a display section including a plurality of unit pixels; and a display drive section configured to generate a plurality of clock signals and supply the clock signals to the display section, the clock signals including two or more clock signals with phases different from one another. | 03-05-2015 |
20150061980 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line. | 03-05-2015 |
20150070252 | PIXEL CIRCUIT AND DISPLAY - A pixel circuit and a display, wherein the pixel circuit includes: a first pixel sub-circuit and a second pixel sub-circuit, as well as an initialization module and a data voltage writing module connected to the first pixel sub-circuit and the second pixel sub-circuit; wherein the initialization module is connected to a reset signal terminal and a low potential terminal, and is used to initialize the first pixel sub-circuit and the second pixel sub-circuit under a control of a reset signal inputted from the reset signal terminal; the data voltage writing module is connected to a data signal line and a gate signal terminal, and is used to firstly write a first data voltage to the first pixel sub-circuit and the second pixel sub-circuit under a control of a signal inputted from the gate signal terminal and to compensate for a driving module of the second pixel sub-circuit, and then to write a second data voltage to the first pixel sub-circuit and compensate for a driving module of the first pixel sub-circuit. The pixel circuit and the display can reduce a size of pixel circuit, so as to further reduce a pixel pitch, increase the number of the pixels contained in per unit area and improve a picture display quality. | 03-12-2015 |
20150070253 | DISPLAY DEVICE - A display device has a plurality of arrayed display pixels. A drive transistor includes a first gate electrode and supplies the current corresponding to a level of a luminance signal to the luminescence element. A switching transistor includes a source electrode, a drain electrode, a second gate electrode and a semiconductor layer. The semiconductor layer is faced with the second gate electrode and has, in a channel width direction perpendicular to a channel length direction of the switching transistor, a channel region with a first width and a remainder region with a second width larger than the first width. The source electrode or the drain electrode is connected to the first gate electrode. The source electrode and the drain electrode are provided on the semiconductor layer at an interval. The second gate electrode overlaps, in a plan view, the channel region entirely and the remainder region at least partially. | 03-12-2015 |
20150070254 | DISPLAY DEVICE AND ELECTRONIC DEVICE INCLUDING DISPLAY DEVICE - Objects are to provide a display device the power consumption of which is reduced, to provide a self-luminous display device the power consumption of which is reduced and which is capable of long-term use in a dark place. A circuit is formed using a thin film transistor in which a highly-purified oxide semiconductor is used and a pixel can keep a certain state (a state in which a video signal has been written). As a result, even in the case of displaying a still image, stable operation is easily performed. In addition, an operation interval of a driver circuit can be extended, which results in a reduction in power consumption of a display device. Moreover, a light-storing material is used in a pixel portion of a self-luminous display device to store light, whereby the display device can be used in a dark place for a long time. | 03-12-2015 |
20150077314 | AMOLED DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device is disclosed. In one aspect, the display device includes a plurality of pixels, a plurality of data lines respectively connected to the pixels, and a compensation unit connected to at least one the data lines. The compensation unit includes a first capacitor storing a leakage current of a pixel connected to the data line, a second capacitor storing a difference current, where the difference current is the difference between a reference current and a pixel current measured when a data signal of a reference gray signal is applied to the pixel. The compensation unit also includes a comparator outputting a difference value between the voltages stored in the first and second capacitors. According to embodiments, is possible to measure an accurate pixel current regardless of a leakage current and accurately detect deterioration of a pixel. | 03-19-2015 |
20150077315 | DISPLAY SYSTEMS WITH COMPENSATION FOR LINE PROPAGATION DELAY - A method for characterizing and eliminating the effect of propagation delay on data and monitor lines of AMOLED panels is introduced. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row. | 03-19-2015 |
20150084842 | PIXEL CIRCUIT, DRIVING METHOD FOR THE SAME, AND DISPLAY DEVICE - The present disclosure relates to the art of display manufacture. There are provided a pixel circuit, a driving method for the same and a display device. The pixel circuit comprises a light-emitting device and a driving transistor connected in series between a first voltage signal terminal and a second voltage signal terminal, and the pixel circuit further comprises a light-emitting control module and a compensation module; the light-emitting control module has an input terminal connected to a first control signal, an output terminal connected to the source and the drain of the driving transistor, and the light-emitting module is configured to control the state of the driving transistor in response to the first control signal so that the light-emitting device emits light or is turned off; the compensation module has an input terminal connected to a second control signal, and an output terminal connected to the gate and the source of the driving transistor, and to the light-emitting control module, and the compensation module is configured to disconnect or connect the gate and the source of the driving transistor in response to the second control signal, so that the voltage at the gate of the driving transistor compensates for the threshold voltage of the driving transistor when the light-emitting device emits light. The issue of the poor uniformity of the light-emitting diode in luminance can be addressed by the above technical solutions. | 03-26-2015 |
20150084843 | PIXEL DRIVING CIRCUIT, DRIVING METHOD THEREOF AND DISPLAY APPARATUS - Provided are a pixel driving circuit, a driving method thereof and a display apparatus. The pixel driving circuit includes an electroluminescent element, a driving transistor, a switch unit, a charging unit, a compensation unit, a cutoff unit and a storage unit. The pixel driving circuit charges the storage capacitor by the charging unit first, and then uses the method of charging first and discharging later to make the voltage in the storage capacitor match the driving current quickly to perform fast compensation of the threshold voltage V | 03-26-2015 |
20150084844 | CAPACITIVE-LOAD DRIVING CIRCUIT AND PLASMA DISPLAY APPARATUS USING THE SAME - A plasma display apparatus including a capacitive load and a driving circuit is provided. The plasma display apparatus includes a driving power source supplying a drive voltage to the capacitive load and a reference potential terminal supplying a reference potential to the capacitive load. A drive IC is coupled to the driving power source. | 03-26-2015 |
20150097762 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel includes an organic light emitting diode, a first transistor, and a second transistor. The first transistor establishes a first current path between a first node coupled to a first power source and a second node coupled to the organic light emitting diode. The second transistor establishes a second current path between the first and second nodes. The first and second transistors are coupled in parallel. | 04-09-2015 |
20150097763 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - An organic light emitting display device is capable of securing sufficient compensation period such that a threshold voltage of a driving transistor may be compensated. A pixel includes: an organic light emitting diode; a second transistor for controlling an amount of current supplied from a first power source to the organic light emitting diode; a first capacitor having a first terminal coupled to a gate electrode of the second transistor; a first transistor coupled between a second terminal of the first capacitor and a data line, and being configured to turn on when a scan signal is supplied to a scan line; and a third transistor coupled between a gate electrode and a second electrode of the second transistor and having a turning-on period that is not overlapped with that of the first transistor. The third transistor is configured to turn on for a longer time than the first transistor. | 04-09-2015 |
20150102985 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND REPAIRING METHOD THEREOF - An organic light emitting device includes a substrate including a display unit configured to display an image and a peripheral portion surrounding the display unit, a plurality of scan lines on the substrate and extending in a first direction, a plurality of data lines on the substrate and intersecting the scan lines in a second direction, a plurality of pixels at the display unit and connected to the scan lines and the data lines, a repair ring surrounding the display unit, a plurality of driving pads on the peripheral portion and connected to ends of the plurality of data lines, a pair of dummy driving pads on the peripheral portion and connected to ends of the repair ring, and a driving circuit configured to transmit a data signal to the plurality of driving pads and to the pair of dummy driving pads. | 04-16-2015 |
20150116191 | PIXEL CIRCUIT, METHOD FOR DRIVING THE SAME, ARRAY SUBSTRATE AND DISPLAY DEVICE - The pixel circuit comprises a driving sub-circuit, a controlling sub-circuit and a light-emitting sub-circuit. The light-emitting sub-circuit includes a first organic light-emitting element and a second organic light-emitting element. The first and second organic light-emitting elements are coupled to the driving sub-circuit respectively. The controlling sub-circuit is coupled to the driving sub-circuit so as to control the driving sub-circuit to drive the first and second organic light-emitting elements, so that at an identical display stage, one of the first and second organic light-emitting elements emits light in a forward bias state and the other does not emit light in a backward bias state, and at an adjacent display stage, the bias states are switched. | 04-30-2015 |
20150123883 | Display With Hybrid Progressive-Simultaneous Drive Pattern - A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensating and programming operations. The array of display pixels may have rows and columns. Row lines may be used to apply row control signals to rows of the display pixels. Column lines (data lines) may be used to apply display data and other signals to respective columns of display pixels. Display driver circuitry may simultaneously compensate multiple rows of the display pixels for drive transistor threshold voltage variations by supplying a common reference voltage over the data lines during a common compensation period. The display data may then be loaded into the rows sequentially before simultaneously commencing emission in each of the compensated and programmed rows. | 05-07-2015 |
20150138049 | SEMICONDUCTOR DEVICE AND DISPLAY DEVICE UTILIZING THE SAME - A source-drain voltage of one of two transistors connected in series becomes quite small in a set operation (write signal), thus the set operation is performed to the other transistor. In an output operation, two transistors operate as a multi-gate transistor, therefore, a current value can be small in the output operation. In other words, a current can be large in the set operation. Therefore, the set operation can be performed rapidly without being easily influenced by an intersection capacitance and a wiring resistance which are parasitic on a wiring and the like. Further, an influence of variations between adjacent ones can be small as one same transistor is used in the set operation and the output operation. | 05-21-2015 |
20150138050 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display includes: pixels respectively positioned in areas defined by scan lines and data lines; a scan driver configured to non-sequentially supply a scan signal to the scan lines, and to control a signal supplied by a first control line commonly coupled to the pixels so that the pixels are set in a non-emission state during a first period that is a partial period of an i (i is a natural number) frame and during a first period that is a partial period of an (i+2) frame; a data driver configured to supply a left data signal to the data lines during the i frame and during an (i+1) frame, and to supply a right data signal to the data lines during the (i+2) frame and during an (i+3) frame; and a timing controller configured to control the scan driver and the data driver, and to supply data to the data driver, wherein each of the (i+1) frame and the (i+3) frame is a period shorter than that of the i frame. | 05-21-2015 |
20150138051 | SCANNING DRIVE CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME - Disclosed herein is a display device, including display elements two-dimensionally disposed in a matrix; scanning lines, initialization control lines, and display control lines extending in a first direction; data lines extending in a second direction different from the first direction; and a scanning drive circuit. | 05-21-2015 |
20150138052 | IMAGE DISPLAY DEVICE AND METHOD FOR REPAIRING SHORT CIRCUIT FAILURE - The present invention relates to an image display device and a method for repairing a short circuit failure. The present invention is applicable to, for example, an active matrix type image display device using an organic EL device, and a short circuit location between wiring patterns is able to be repaired. In a scanning line WSL or a signal line DTL, a bypass wiring pattern BP for bypassing a region where the signal line DTL and the scanning line WSL intersect with each other is provided. By using the bypass wiring pattern BP, a short circuit location between wiring patterns is repaired. | 05-21-2015 |
20150145754 | PIXEL CIRCUIT FOR INCREASING ACCURACY OF CURRENT SENSING - A pixel circuit for increasing accuracy of current sensing of an organic light-emitting diode (OLED) display is disclosed. In one aspect, the pixel circuit includes an OLED, a driving circuit, and first to third transistors. The driving circuit is configured to adjust a magnitude of a current flowing through the OLED based at least in part on a data signal received from a data line. The first transistor is configured to electrically connect the data line and a holding capacitor based at least in part on a scan signal. The second transistor is configured to electrically connect the holding capacitor and the driving circuit based at least in part on a write control signal. The third transistor is configured to electrically connect the data line and an anode electrode of the OLED based at least in part on a sensing control signal. | 05-28-2015 |
20150145755 | DISPLAY DEVICE - To provide a display device that gives a viewer a strong stereoscopic effect or sense of depth or a natural stereoscopic effect or sense of depth in a two-dimensional image, a display device including a display portion having a curved surface is provided. The display portion may be bent in a horizontal direction or a vertical direction. Alternatively, the display portion may have a convex surface or a concave surface on a display surface side. The display device may include a frame portion. A display device including a frame portion and a display portion which has a display surface on a frame portion side, is located so as to be apart from the frame portion with a distance therebetween, and has a curved surface, in which the display portion overlaps with an opening of the frame portion, and an end portion of the display portion overlaps with the frame portion, is provided. | 05-28-2015 |
20150145756 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display includes a substrate including a display area and a non-display area, a display unit that is formed in the display area and includes a plurality of subpixels arranged in a matrix form, a main ground line that is positioned at a first side of the non-display area and is formed using the same material as source and drain electrodes included in each subpixel, and an auxiliary ground line that is formed to surround the non-display area, overlaps at least a portion of the main ground line at the first side of the non-display area, is electrically connected to the main ground line, and is formed using the same material as a lower electrode included in each subpixel. | 05-28-2015 |
20150302791 | DISPLAY PANEL, DISPLAY DEVICE, AND ELECTRONIC UNIT - A display panel including: a panel section including a display region where a plurality of pixels are arranged, and a gap region provided in a gap between the pixels; and a barrier section including a plurality of transmissive regions in a two-dimensional arrangement, and a light-blocking region to be around each of the transmissive regions. The transmissive regions are each configured to make entirely visible any one of the pixels therethrough when a viewer views the panel section not from a front but from a first or second direction via the barrier section, the pixels are each configured by a plurality of sub-pixels varying in type, and the sub-pixels in each of the pixels are arranged not in stripes but differently. | 10-22-2015 |
20150302799 | DRIVING CIRCUIT FOR ACTIVE MATRIX ORGANIC LIGHT-EMITTING DIODE - The disclosure discloses a driving circuit for AMOLED consisting essentially of a scanning line for providing a scanning voltage; a reverse scanning line for providing a reverse scanning voltage reverse to the scanning voltage; a data line for providing a data voltage; a storage capacitor; and a CMOS transmission gate having two control terminals, an input terminal and an output terminal. The two control terminals are respectively electrically coupled to the scanning line and the reverse scanning line. The input terminal is electrically coupled to the data line. The output terminal is electrically coupled to the storage capacitor. The CMOS transmission gate is configured to couple the data voltage to the storage capacitor via control of the scanning voltage and the reverse scanning voltage. | 10-22-2015 |
20150310805 | Organic Light Emitting Diode Display - An organic light emitting diode display with improved aperture ratio includes: a substrate; first and second pixels disposed in a first row of the substrate and third and fourth pixels disposed in a second row adjacent to the first row and respectively disposed in the same columns as the first and second pixels; a scan line and a previous scan line applying a scan signal and a previous scan signal, respectively, to the pixel units; a data line and a driving voltage line applying a data signal and a driving voltage, respectively, to the pixel units; and a common initialization voltage line disposed between the first and second pixels and between the third and fourth pixels, commonly connected to the pixel units, and applying an initialization voltage. One common initialization contact hole connected to all pixels units and one initialization voltage line connected to the common initialization contact hole are surrounded by the pixel units. | 10-29-2015 |
20150325168 | DRIVE CIRCUIT, DISPLAY DEVICE AND DRIVING METHOD - A retention unit which retains input data, and a light emission control unit which compensates a value of a drive current that flows to a light emission element based on the input data which is retained in the retention unit, are provided in each pixel unit of a display device. While the light emission control unit displays input data of an image of an Nth frame during a light emission period TL (N) by driving the light emission element, input data of an image of an (N+1)th frame is written to the retention unit which becomes a pair together with the light emission control unit, as processing in a write processing period TS (N+1) of the (N+1)th frame. | 11-12-2015 |
20150325172 | Display Correction Circuit, Display Correction System, and Display Device - To improve display quality of a pixel of an organic EL panel. Display correction is performed in the pixel with a small number of transistors in the pixel of the organic EL panel. A capacitor and an oxide semiconductor transistor are formed in a display driver IC. A minute current flowing in the pixel is measured from the amount of change in capacitor voltage to correct display. Because the off-state current of an oxide semiconductor is extremely small even at high temperatures, current can be accurately measured and display images can be accurately corrected. | 11-12-2015 |
20150349276 | COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF - Provided herein are a compound capable of improving light emitting efficiency, stability, and lifespan of the element, an organic element using the same, and an electric device for the same. | 12-03-2015 |
20150356922 | PIXEL CIRCUIT, DISPLAY DEVICE, AND DRIVE METHOD THEREFOR - A pixel circuit, a display device, and a drive method therefor. The pixel circuit comprises: a first power source (ELVDD), a second power source (ELVSS), an organic light-emitting diode (OLED), a first capacitor (C | 12-10-2015 |
20150356923 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each display pixel includes a driving transistor comprising a first terminal, a second terminal, and a third terminal, a capacitor connected to the first terminal of the driving transistor, a first switching transistor connected to the data line and the first terminal of the driving transistor, a light-emitting element connected to the third terminal of the driving transistor configured to emit light, a second switching transistor connected between the sensing line and the light-emitting element, and a third switching transistor connected between the third terminal of the driving transistor and the light-emitting element. | 12-10-2015 |
20150364083 | ORGANIC LIGHT-EMITTING DIODE DISPLAY - An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a display panel, a data driver, an emission control driver, a timing controller, a gate driver, an initialization driver, and a timing controller. The emission control driver is configured to sequentially apply an emission control signal to emission control lines, the emission control signal configured to determine a light emission period and a non-light emission period. The timing controller is configured to output a first start signal and a second start signal. The gate driver is configured to receive the first start signal from the timing controller, sequentially apply a gate initialization signal to gate initialization lines based on the first start signal, and sequentially apply a scan signal to the scan lines. The initialization driver is configured to receive the second start signal and sequentially apply an OLED initialization signal to the OLED initialization lines. | 12-17-2015 |
20150371587 | ORGANIC LIGHT EMITTING DIODE PIXEL COMPENSATION CIRCUIT, AND DISPLAY PANEL AND DISPLAY DEVICE CONTAINING THE SAME - An OLED pixel compensation circuit includes first, second, third, fourth, fifth, sixth and seventh transistors and a storage capacitor. The first transistor has a gate electrode coupled to a scan signal, a first electrode coupled to a data signal, and a second electrode coupled to a gate electrode of the fifth transistor. The second transistor has a gate electrode coupled to the scan signal, a first electrode coupled to a power supply voltage, and a second electrode coupled to a second electrode of the storage capacitor. The third transistor has a gate electrode coupled to a first light emitting signal, a first electrode coupled to the power supply voltage. The transistors and the storage capacitor are configured to compensate the threshold voltage drift of the fifth transistor, which is the driving transistor for the OLED. | 12-24-2015 |
20150379930 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes an (i−1)th pixel, an i-th pixel, and an (i+1)th pixel, each including an organic light emitting diode and a driving transistor to control a driving current flowing through the organic light emitting diode. A first node of the i-th pixel, to which a control electrode of the driving transistor of the i-th pixel is connected, is initialized to an initialization voltage in synchronization with an (i−1)th scan signal applied to the i-th pixel, and an anode of the organic light emitting diode of the i-th pixel is initialized to the initialization voltage in synchronization with an i-th scan signal applied to the (i+1)th pixel. | 12-31-2015 |
20150379932 | METHOD AND SYSTEM FOR PROGRAMMING AND DRIVING ACTIVE MATRIX LIGHT EMITTING DEVICE PIXEL HAVING A CONTROLLABLE SUPPLY VOLTAGE - Method and system for programming and driving active matrix light emitting device pixel is provided. The pixel is a voltage programmed pixel circuit, and has a light emitting device, a driving transistor and a storage capacitor. The pixel has a programming cycle having a plurality of operating cycles, and a driving cycle. During the programming cycle, the voltage of the connection between the OLED and the driving transistor is controlled so that the desired gate-source voltage of a driving transistor is stored in a storage capacitor. | 12-31-2015 |
20150380471 | PIXEL ARRANGEMENT STRUCTURE, DISPLAY DEVICE AND DISPLAY METHOD THEREOF - A pixel arrangement structure according to the present disclosure may include pixel units parallel to each other. The pixel units each includes a plurality of first pixels and second pixels spaced from each other. The first pixels each include a first sub-pixel located in a first row, a second sub-pixel located in a second row, and a third sub-pixel located in third and fourth rows. The second pixels each include a third sub-pixel located in the first and second rows, a first sub-pixel located in the third row, and a second sub-pixel located in the fourth row. The first sub-pixels and second sub-pixels are arranged horizontally, while the third sub-pixels are arranged longitudinally. | 12-31-2015 |
20160019836 | PIXEL CIRCUIT FOR AC DRIVING, DRIVING METHOD AND DISPLAY APPARATUS - A pixel circuit for AC driving, a driving method and a display apparatus relate to display manufacturing field, and are capable of removing effect of internal resistance of a power supply line on a current for light-emitting and effect of a threshold voltage of a driving transistor on the display nonuniformity of a panel while effectively avoiding rapid aging of OLED. The pixel circuit includes: a first capacitor, a second capacitor, a first voltage input unit, a second voltage input unit, a data signal input unit, a first light emitting unit and a second light emitting unit. | 01-21-2016 |
20160019843 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Aspects of embodiments of the present invention include a display device including: a display unit comprising a plurality of scan lines that extend in a row direction, a plurality of data lines that extend in a column direction, and a plurality of pixels coupled to the scan lines and the data lines; a scan driver configured to sequentially apply a scan signal of a gate-on voltage to the scan lines during a writing period for applying a data voltage to the pixels; and a data driver configured to apply a data voltage to the data lines during the writing period, wherein a first power source voltage supplying a driving current of the pixels is applied to the data lines during a period other than the writing period. | 01-21-2016 |
20160027381 | ORGANIC LIGHT-EMITTING DIODE DISPLAY AND METHOD OF DRIVING THE SAME - An organic light-emitting diode (OLED) display and a method of driving the same are disclosed. In one aspect, the method includes displaying an image on a display panel based at least in part on a first power voltage provided through a first power line and a second power voltage having a first voltage level provided through a second power line. The display panel is configured to receive the first and second power voltages from a power supply unit. The method also includes providing the second power voltage having a second voltage level higher than the first voltage level to the display panel through the second power line, detecting a second power line current flowing through the second power line when the second power voltage has the second voltage level, and turning off the power supply unit when the second power line current is detected. | 01-28-2016 |
20160035805 | ORGANIC LIGHT EMITTING DISPLAY APPARATUS - An organic light emitting display apparatus includes a first pixel and a second pixel. The first pixel includes a first data line, a first driving thin film transistor (TFT), and a first contact metal connected to the first driving TFT and in a layer at a same level as a layer of the first data line. The second pixel includes a second data line, a second driving TFT, and a second contact metal connected to the second driving TFT and in a layer at a same level as a layer of the second data line. The first gap between the first driving TFT and the first contact metal is different from a second gap between the second driving TFT and the second contact metal. | 02-04-2016 |
20160049115 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - The present invention provides a display device and a method of driving the same. The display device includes: a light-emitting device; a first capacitor connected between a first contact point and a second contact point; a driving transistor including an input terminal connected to a first voltage, an output terminal, and a control terminal connected to the second contact point; a first switching transistor controlled by a first control signal and connected between a data voltage and the first contact point; a second switching transistor controlled by a second control signal and connected between a second voltage and the first contact point; a third switching transistor controlled by a third control signal and connected between the second contact point and the second voltage; a fourth switching transistor controlled by the first control signal and connected between the second contact point and the output terminal of the driving transistor; and a fifth switching transistor controlled by the second control signal and connected between the light-emitting device and the output terminal of the driving transistor. | 02-18-2016 |
20160055793 | COMPOSITE SHEET AND DISPLAY DEVICE INCLUDING THE SAME - According to an embodiment of the present invention, a composite sheet includes a shock mitigating layer including an elastic member and a graphite layer accommodated in the elastic member, a first heat dissipation sheet configured to be attached to one surface of the shock mitigating layer, and a second heat dissipation sheet configured to be attached to another surface of the shock mitigating layer. | 02-25-2016 |
20160055800 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device has first and second pixel columns and at least one third pixel column. The first pixel column includes first pixels to emit light of a first color and a second pixels to emit light of a second color alternately arranged in a first direction. The second pixel column includes the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column. The at least one third pixel column includes third pixels to emit light of a third color and arranged in the first direction. The first and second pixel columns are alternately arranged in a second direction crossing the first direction. The third pixel column is between the first and second pixel columns. The second pixel of the first pixel column and the second pixel of the second pixel column are connected to a same data line. | 02-25-2016 |
20160063921 | Organic Light-Emitting Diode Display With Reduced Capacitive Sensitivity - A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensation and programming operations. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. The capacitor may have a first terminal coupled to the gate of the drive transistor and a second terminal coupled to the light-emitting diode. In one embodiment, two scan control signals and two emission control signals may be used for each row of display pixels. In another embodiment, a single scan control signal and a single emission control signal may be formed for each row of display pixels. | 03-03-2016 |
20160063922 | Organic Light-Emitting Diode Display - A display may have an array of organic light-emitting diode display pixels. Each display pixel may have a light-emitting diode that emits light under control of a drive transistor. Each display pixel may also have control transistors for compensation and programming operations. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. The capacitor may have a first terminal coupled to the gate of the drive transistor and a second terminal coupled to the light-emitting diode. In one embodiment, two scan control signals and two emission control signals may be used for each row of display pixels. In another embodiment, a single scan control signal and a single emission control signal may be formed for each row of display pixels. | 03-03-2016 |
20160071461 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting display device is disclosed. One inventive aspect includes a plurality of pixels provided at a region sectioned by scan lines and data lines and an initialization power unit. The plurality of pixels are configured to control the amount of a current flowing from a first power source to a second power source through an organic light emitting diode in response to a data signal. The initialization power unit supplies initialization power to a driving transistor within each pixel circuit. The initialization power unit further controls the voltage of the initialization power supply to maintain a substantially constant voltage difference between the second power source and the initialization power. | 03-10-2016 |
20160071462 | ORGANIC LIGHT EMITTING DIODE DISPLAY APPARATUS WITH POWER CIRCUIT TO ACCELERATE A VOLTAGE LEVEL - An organic light emitting diode (OLED) display apparatus includes a power circuit and a pixel. The power circuit serves to provide a first voltage. The pixel includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a capacitor, and an OLED. During a programming period, a first terminal of the capacitor receives a data voltage through the turned-on first transistor, a first terminal of the second transistor receives the first voltage, a control terminal of the second transistor is coupled to a second terminal of the capacitor and coupled to a second terminal of the second transistor through the turned-on third transistor, and the power circuit regulates a voltage level or a current of the first voltage to accelerate a voltage level of the control terminal of the second transistor to reach a target voltage. | 03-10-2016 |
20160071463 | Semiconductor Device, Driver IC, Display Device, and Electronic Device - A semiconductor device including a test circuit is miniaturized. The semiconductor device includes r first input terminals (r is an integer of 2 or more), a second input terminal, r functional circuits, a demultiplexer, and a switch circuit. The demultiplexer is a pass transistor logic circuit. R output terminals of the demultiplexer are electrically connected to respective input terminals of the functional circuit and the input terminal is electrically connected to the second input teiminal. Input terminals of the r circuits are electrically connected to the respective first input terminals through the switch circuit. For example, a signal for verification is input to the first input terminal in verification of the functional circuit to operate the demultiplexer. One signal for verification is input to r functional circuits by the demultiplexer. | 03-10-2016 |
20160078802 | LED DISPLAY CONTROL METHOD AND CONTROL CARD, LED DISPLAY SCREEN SYSTEM - The invention relates to a LED display control method adapted for being applied to multiple LEDs electrically connected to N numbers of scan lines. The method includes steps of: during a first round of scanning, receiving a row selection signal and decoding the received row selection signal to sequentially scan the N numbers of scan lines as per a first scanning order and thereby drive and control the LEDs; and during a second round of scanning, receiving another row selection signal and decoding the received another row selection signal to sequentially scan the N numbers of scan lines as per a second scanning order and thereby drive and control the LEDs. The first and second round of scannings are alternately performed, the first and second scanning orders are mutually reverse orders. The invention further provides a LED display screen system and a LED display control card. | 03-17-2016 |
20160078813 | ORGANIC LIGHT EMITTING DISPLAY CAPABLE OF COMPENSATING FOR LUMINANCE VARIATIONS CAUSED BY CHANGES IN DRIVING ELEMENT OVER TIME AND METHOD OF MANUFACTURING THE SAME - Provided are an organic light emitting display and a method of manufacturing the same. The organic light emitting display includes: a display panel including a plurality of pixels, each pixel including: a light emitting element, and a driving element to drive the light emitting element, a data driving circuit to, within one horizontal display period: write sensing data to a pixel on a horizontal display line through a data line, sense the pixel current of the pixel through a reference line, and then write display data compensated by a first offset compensation value to the pixel, an offset calculator to calculate a second offset compensation value for compensating changes in the driving element over time based on the sensed value of the pixel current, and an offset memory to update the pre-stored first offset compensation value with the second offset compensation value when display data writing is stopped. | 03-17-2016 |
20160078815 | METHOD FOR DETERMINING A REFRESH FREQUENCY FOR A MATRIX OF OLED ACTIVE PIXELS AND CORRESPONDING DEVICE - A device includes an OLED pixel and a control circuit controlled at a refresh rate thereof. The device includes first and second dummy control circuits having similar operating characteristics to the control circuit. A controller and logic circuit switch on the first and second dummy control circuits and apply an input voltage so the first and second dummy control circuits output first and second output voltages. At a first time, the controller and logic circuit switch off the second dummy control circuit so a leakage current flows through the second dummy control circuit to ground, causing the second output voltage to reduce. Comparison circuitry determines a second time at which, due to the reduction of the second output voltage, a difference between the first and second output voltages is greater than a threshold. Determination circuitry determines the refresh frequency based upon elapsed time between the first and second times. | 03-17-2016 |
20160093249 | Scanning Structure and Bi-Directional Scanning Method for Driving a Pixel Circuit of an Active-Matrix Organic Light-Emitting Diode - A scanning structure for driving a pixel circuit of an active-matrix organic light-emitting diode display includes a Sn−1 signal unit having a pixel driving circuit for receiving an upper scan signal with a downward scanning direction and a lower scan signal with an upward scanning direction as an input signal. The pixel driving circuit includes a first input end and a first output end. A driving signal can be received by the first input end, transformed to a first scan signal by the pixel driving circuit, and outputted by the first output end. A Sn signal unit includes a Sn pixel circuit having a second input end coupled to the first output end and a second output end. The first scan signal can be received by the Sn pixel circuit and transformed to a second scan signal, and the second scan signal can be outputted by the second output end. | 03-31-2016 |
20160098952 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Exemplary embodiments of the present invention disclose a display device, and a method of driving the same. The display device includes a display unit including pixels included in one or more deterioration region groups and pixels included in one or more reference groups corresponding to the deterioration region groups, a sensing unit configured to sense a current flowing through an organic light emitting diode of each of the deterioration region groups and each of the reference groups and provide current information about the deterioration region group and current information about the reference group. Exemplary embodiments of the present invention also provide a compensation circuit configured to convert first data supplied from the outside into second data by using compensation data corresponding to a compensation prediction curve and output the second data, and compare the current information about the deterioration region group and the current information about the reference group and correct the compensation prediction curve for the deterioration region group; and a data driver configured to supply the second data to the display unit through data lines as data signals. | 04-07-2016 |
20160098953 | DISPLAY PANEL AND ELECTRONIC DEVICE WITH ELECTROSTATIC DISCHARGE PROTECTION FUNCTION - A display panel with an electrostatic discharge (ESD) protection function, includes a organic light emitting diode (OLED) light area, a scan driving circuit, and a data driving circuit. Therein, the OLED light area includes a number of pixel regions which are arranged in array mode. The scan driving circuit and the OLED light area are connected to each other via a number of scan lines which are fanned out. The data driving circuit and the OLED light area are connected to each other via a number of data lines which are fanned out. Therein, each data line is connected to one voltage point via a first OLED, each scan line is connected to one voltage point via a second OLED. | 04-07-2016 |
20160104418 | TIMING CONTROLLER, ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY HAVING THE SAME AND METHOD FOR DRIVING THE OLED DISPLAY - A timing controller, OLED display having the same and method of for driving the display are disclosed. The timing controller includes a failure mode determiner that can receive an input signal and determine whether the OLED display is in a failure mode based on the input signal. The timing controller also includes a failure mode generator configured to store a fail signal, output the fail signal in the failure mode, and selectively output a multiplexed signal including one of the input signal or the fail signal based on whether the OLED display is in the failure mode. The timing controller further includes a failure mode controller configured to receive the multiplexed signal from the failure mode generator, store the multiplexed signal, and selectively output the multiplexed signal of a current frame or the multiplexed signal of a previous frame based on whether the OLED display is in the failure mode. | 04-14-2016 |
20160104420 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display includes at least one first data line, at least one second data line, a plurality of driving transistors, and a plurality of light emitters. Each driving transistor has a driving gate electrode connected to the at least one first data line and the at least one second data line, and the light emitters are respectively connected to the driving transistors. Emission regions of the light emitter do not overlap the at least one first data line, the at least one second data line, and the driving transistors. A shielding portion overlaps an end of the at least one first data line and an end of the at least one second data line. | 04-14-2016 |
20160104424 | PIXEL, DISPLAY DEVICE HAVING THE SAME, AND THIN FILM TRANSISTOR (TFT) SUBSTRATE FOR DISPLAY DEVICE - A pixel, a display device having the same, and a thin film transistor (TFT) substrate for the display device are disclosed. In one aspect, the pixel includes an emitter configured to emit light based at least in part on a driving current. The pixel also includes a driving transistor including an active layer, a first electrode electrically connected to a first end portion of the active layer, a second electrode electrically connected to a second end portion of the active layer, a first gate electrode configured to receive a data voltage from a data driver so as to form a channel in the active layer, and a second gate electrode configured to receive a bias voltage from a voltage source, wherein the channel is configured to adjust the driving current. | 04-14-2016 |
20160104426 | DISPLAY APPARATUS HAVING A VOLTAGE CONNECTING LINE - A display apparatus includes a display panel including a gate line disposed in a display area and extending in a first direction, a data line extending in a second direction crossing the first direction and a switching element electrically connected to the gate line and the data line. A first data driving part is electrically connected to a first peripheral area adjacent to the display area. A second data driving part is electrically connected to a second peripheral area adjacent to the first peripheral area. The display panel includes a voltage connecting line disposed between the first peripheral area and the second peripheral area. The voltage connecting line connects the first data driving part to the second data driving part. | 04-14-2016 |
20160117983 | PIXEL CIRCUIT, DRIVING METHOD THEREOF AND DISPLAY PANEL - A circuit is disclosed. The circuit includes a first transistor, to respond to a first scanning signal and to transmit a first voltage, a first capacitor, to store the first voltage, and an organic light emitting diode. The circuit also includes a second transistor, to provide a current to the organic light emitting diode, a third transistor, to respond to a second scanning signal and to transmit a first potential signal to the second transistor, and a fourth transistor, to respond to the first scanning signal and to form a diode connection of the second transistor. The circuit also includes a fifth transistor, to respond to a third scanning signal and to transmit a second signal voltage to the second transistor, and a sixth transistor, to respond to a light emitting scanning signal, and to output the current to the organic light emitting diode. | 04-28-2016 |
20160133185 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device according to an embodiment includes a display panel including n (n is a natural number) number of horizontal lines, an ith (i is a natural number satisfying a condition of 1 | 05-12-2016 |
20160133188 | Voltage driving pixel circuit, display panel and driving method thereof - The present disclosure relates to a voltage driving pixel circuit, a display panel and a driving method thereof. The voltage driving pixel circuit comprises: any two power lines and a load connected in each power line, wherein there is one or more AND gate circuits between the any two power lines. By means of the voltage driving pixel circuit of the present disclosure, the power lines form a network structure in the light emitting phase, so as to avoid voltage change of the power line voltage Vdd of each row in the pixel in the light emitting phase, thereby improving lateral resistance drop and crosstalk phenomenon of the variable power line voltage Vdd. | 05-12-2016 |
20160133846 | ORGANIC LIGHT EMITTING ELEMENT - Provided is an organic light emitting element including: an anode; a cathode; and an organic compound layer formed between the anode and the cathode and including a hole injection layer, a hole transport layer, and an emission layer, in which: the emission layer includes a host and a dopant; the hole transport layer includes a hole transport material having multiple aromatic hydrocarbon skeletons and a single bond for linking the aromatic hydrocarbon skeletons; the hole transport material has a triplet level T | 05-12-2016 |
20160140896 | DISPLAY DEVICE - A display device including a display area and a non-display area surrounding the display area. The non-display area includes a test data line (TDL) which receives a test data signal from an external source, a plurality of connection line units (CLUs) which connect the data lines and the TDL, and a dummy line unit which is formed in the non-display area. Each of the CLUs includes a test switch having an input terminal connected to the TDL, an output terminal connected to one of a plurality of data lines disposed in the display area, and a control terminal connected to a test switch control line which receives a test switch control signal from an external source. At least one of the CLUs includes a disconnection portion which interrupts the TDL, wherein both ends of the disconnection portion are connected to the dummy line unit by bypass connection lines, respectively. | 05-19-2016 |
20160140903 | SCANLINE DRIVER AND DISPLAY DEVICE INCLUDING THE SAME - A scanline driver includes a shift register circuit and an output buffer. The shift register circuit provides a register output signal and a plurality of signals based on a scan input signal and a plurality of clock signals. The shift register circuit is arranged at at least one horizontal side of a pixel circuit region and includes a plurality of unit pixel circuits connected to a scanline. The output buffer provides a scanline enable signal to the scanline based on the register output signal and the plurality of signals. The output buffer is arranged at at least one vertical side of the pixel circuit region in a pixel array. | 05-19-2016 |
20160148563 | DISPLAY DEVICE - A display device includes: a pixel region in which plural pixels, each including a light emitting element, a capacitor, a drive transistor, and a switch transistor, are arranged in rows and columns; scanning lines; signal lines; and parasitic capacitance which occurs between a source node of the light emitting element of each of the plural pixels and a signal line among the signal lines, wherein when images having different grayscales are displayed in the pixels on adjacent rows which are a 1st-row pixel and a 2nd-row pixel, a difference between a gate-source voltage of the drive transistor of the 1st-row pixel and a gate-source voltage of the drive transistor of the 2nd-row pixel is less than a voltage value of one grayscale, the difference being represented by ΔVdata×Cad/(Cs+Cad+Coled). | 05-26-2016 |
20160148565 | PIXEL CIRCUIT AND ORGANIC LIGHT-EMITTING DISPLAY DEVICE INCLUDING THE SAME - Provided is an organic light-emitting display device including: a first pixel; a second pixel; and a common capacitor connected to the first and second pixels, wherein the first pixel comprises: a first switching transistor transmitting a first data signal in response to a first scan signal; a second switching transistor transmitting the first data signal to the common capacitor; a first storage capacitor storing a charge corresponding to the first data signal; a first driving transistor generating a driving current corresponding to the charge stored in the first storage capacitor; and a first organic light-emitting diode (OLED) emitting light corresponding to the first driving current, and wherein the second pixel comprises: a third switching transistor transmitting a second data signal in response to a second scan signal; a fourth switching transistor transmitting the second data signal to the common capacitor; a second storage capacitor storing a charge corresponding to the second data signal; a second driving transistor generating a driving current corresponding to the charge stored in the second storage capacitor; and a second organic light-emitting diode (OLED) emitting light corresponding to the second driving current. | 05-26-2016 |
20160148574 | PIXEL UNIT STRUCTURE OF ORGANIC LIGHT EMITTING DIODE DISPLAY PANEL AND DRIVING MECHANISM THEREOF - A pixel unit structure of an organic light emitting diode display panel includes a switch transistor, a storage capacitor, an organic light emitting diode, a driving transistor, a first control circuit, and a second control circuit. The organic light emitting diode is controlled by the driving transistor and the first control circuit to emit light. The pixel unit operates in a number of time events repeating in sequence. | 05-26-2016 |
20160155387 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD OF THE SAME | 06-02-2016 |
20160163256 | OLED DISPLAY MODULES FOR LARGE-FORMAT OLED DISPLAYS - OLED display modules for large-format displays are disclosed. The OLED display module includes a matrix of OLEDs, with each OLED having an anode and a cathode, and an OLED drive circuit having electrical connections defined by rows and columns that electrically connect to the OLEDs in the OLED matrix. Groups of adjacent rows are arranged in parallel and groups of adjacent columns are arranged in parallel, thereby defining super pixels each having an array of four or more OLEDS, wherein the OLEDs in a given super pixel cannot be individually activated. The modules can be combined to form the large-format display. | 06-09-2016 |
20160163257 | ORGANIC LIGHT EMITTING DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - An organic light emitting display apparatus includes a timing controller, a power supply, a sensor controller, a sensor, and a power controller. The timing controller outputs a vertical synchronization signal. The power supply outputs a first power and a second power to a display through first and second power lines. The sensor controller outputs a sensor control signal synchronized with the vertical synchronization signal. The sensor measures current flowing through the first power line in synchronization with the sensor control signal. The power controller controls the power supply based on the measured current, and the power supply adjusts the voltage level of the first power based on the sensor control signal. The sensor control signal has a period based on dividing the vertical synchronization signal. | 06-09-2016 |
20160189607 | ARRAY SUBSTRATE, LIQUID CRYSTAL DISPLAY PANEL AND ORGANIC LIGHT EMITTING DISPLAY PANEL - An array substrate, a liquid crystal display panel and an organic light emitting display panel are disclosed. The array substrate includes: a plurality of pixel units arranged in a plurality of rows and a plurality of columns and divided into a plurality of pixel unit groups each including n rows of pixel units, where n is equal to or larger than 1; and at least one driving circuit each disposed on a side of the pixel unit group in a row direction, where the at least one driving circuit interleaves with neighboring preceding and succeeding pixel unit groups in a column direction of the plurality of pixel units. | 06-30-2016 |
20160203762 | GATE DRIVING CIRCUIT | 07-14-2016 |
20160203765 | ORGANIC LIGHT-EMITTING DIODE DISPLAY | 07-14-2016 |
20160253956 | DISPLAY, METHOD FOR DRIVING DISPLAY, AND ELECTRONIC APPARATUS | 09-01-2016 |
20160253957 | SCANNING DRIVE CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME | 09-01-2016 |
20160379552 | PIXEL, ORGANIC LIGHT EMITTING DISPLAY DEVICE, AND DRIVING METHOD THEREOF - A pixel including: an organic light emitting diode; a first transistor configured to control an amount of current that passes through the organic light emitting diode to flow to a second power from a first power that is connected to a first electrode of the first transistor corresponding to a voltage of a first node; a second transistor between a data line and the first node; a third transistor between the first node and a reference power; a fourth transistor between a second node and an initialization power, the second node being connected to an anode electrode of the organic light emitting diode; a first capacitor; and a second capacitor connected in series to the first capacitor, the first and second capacitors being between the first node and the first power. | 12-29-2016 |
20160379553 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF, AND ORGANIC LIGHT EMITTING DISPLAY - Provided are pixel circuits using organic light emitting diodes (OLEDs) and a driving method thereof, and an organic light emitting display including the pixel circuits. The OLED is driven to emit light by a drive transistor generating a drive current compensated with respect to a threshold voltage difference and mobility deviation. The drive transistor may receive reference voltage and data signals in response to separate scan signals supplied to the pixel circuits via different scan lines. As a result, a threshold voltage compensation time, which may include the time during which a reference voltage is supplied to the drive transistor in response to a particular scan signal, may be set long enough regardless of a time during which the data signal is supplied to the pixel circuits located in respective rows of the organic light emitting display in response to a separate scan signal. | 12-29-2016 |
20160379560 | PIXEL, ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE PIXEL AND DRIVING METHOD OF ORGANIC LIGHT EMITTING DISPLAY DEVICE - A pixel includes an organic light emitting diode, and a driving circuit configured to supply current to the organic light emitting diode, the driving circuit including a driving transistor configured to control a level of the current flowing in the organic light emitting diode based on a level of a voltage supplied to a data line, and a first transistor including a first electrode electrically connected to an anode of the organic light emitting diode, a second electrode configured to receive an initialization power, and a gate electrode electrically connected to the data line, wherein the first transistor is configured to supply the initialization power to the anode of the organic light emitting diode when the first transistor is turned on such that the organic light emitting diode does not emit light. | 12-29-2016 |
20170236471 | ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS | 08-17-2017 |
20190147797 | Detection Method of Pixel Circuit, Driving Method of Display Panel, Display Device and Pixel Circuit | 05-16-2019 |
20190147801 | COMPENSATION METHOD FOR DISPLAY PANEL, DRIVING DEVICE, DISPLAY DEVICE, AND STORAGE MEDIUM | 05-16-2019 |
20190148462 | METHOD AND APPARATUS FOR PRODUCING FLEXIBLE OLED DEVICE | 05-16-2019 |
20220139298 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device includes pixels, a controller, and a data driver. The controller selects a target pixel among the pixels and generates an adjusted gray level for the target pixel based on gray levels corresponding to the target pixel and relevant pixels neighboring the target pixel. The data driver generates a data signal for the target pixel based on the adjusted gray level. The target pixel, at least one of the relevant pixels, and at least one of the pixels of the display device respectively emit light of three colors different from each other. Four mixed colors are different from each other and are each a mixture of at least two of the three colors. The controller generates the adjusted gray level using reference coefficients for at least one of the three colors and for at least one of the four mixed colors. | 05-05-2022 |
20220139327 | SCAN DRIVER - A scan driver including a plurality of scan stages. A first scan stage among the plurality of scan stages includes first-to-sixth transistors and a first capacitor. The first transistor is connected to a first Q node, a first scan clock line, and a first scan line. A second transistor is connected to a first scan carry line and the first Q node. A third transistor is connected to a first sensing carry line and a second sensing carry line. A fourth transistor is connected to a first control line and the third transistor. A fifth transistor is connected to the fourth transistor, a second control line, and a first node. A first capacitor is connected to the fifth transistor. A sixth transistor is connected to a third control line, the first node, and the first Q node. | 05-05-2022 |
20220139337 | PIXEL CIRCUIT AND DISPLAY PANEL - The pixel circuit includes a data-writing module, a drive module, a storage module, a first light emission control module, a second light emission control module, a light-emitting module and a first initialization module. A first terminal of the first initialization module is electrically connected to a second light emission control signal input terminal, a second terminal of the first initialization module is electrically connected to a control terminal of the drive module; or the pixel circuit includes an initialization voltage input terminal, the first terminal of the first initialization module is electrically connected to the initialization voltage input terminal, the second terminal of the first initialization module is electrically connected to the control terminal of the drive module. The first initialization module is configured to initialize the control terminal of the drive module under a control of a control signal input into a control terminal of the first initialization module. | 05-05-2022 |