| Patent application number | Description | Published |
|---|
| 20080197785 | 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. | 08-21-2008 |
| 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 |
| 20080198104 | Display apparatus, method of driving a display, and electronic device - In a display apparatus including a correction unit and a switching transistor, the correction unit operates in a non-light emission period such that a correction voltage for eliminating an effect of a variation in a characteristic of a driving transistor is stored in a storage capacitor. The switching transistor is disposed between one current terminal of the driving transistor and a light emitting element. The switching transistor turns off during the non-light emission period thereby to electrically disconnect the light emitting element from the one current terminal of the driving transistor thereby preventing a leakage current from flowing through the light emitting element during the period in which the correction unit operates, and thus preventing the correction voltage from having an error due to the leakage current. | 08-21-2008 |
| 20080198111 | Display apparatus and drive method therefor, and electronic equipment - A drive section sequentially supplies respective scanning lines with a control signal and supplies respective signal lines with a video signal to carry out a correction operation for holding a voltage equivalent to a threshold voltage of a drive transistor in a holding capacitance, and subsequently performs a write operation for writing the video signal in the holding capacitance, and before the correction operation, the drive section switches potentials at the bias line and adds a coupling voltage to one current terminal of the drive transistor via an auxiliary capacitance to carry out a preparation operation for an initialization to set a potential difference between a control terminal and the one current terminal of the drive transistor larger than the threshold voltage. | 08-21-2008 |
| 20080198182 | Display device and electronic apparatus - With a source voltage of a transistor driving a light emitting element set to a fixed voltage, variations in an emission luminance due to variations in the threshold voltage of the transistor are corrected. The fixed voltage is set in accordance with a signal level of a drive pulse signal on-off controlling a transistor supplying power to the first transistor. | 08-21-2008 |
| 20080224621 | Display device - A display device includes a pixel area where a plurality of pixels are arranged in a matrix and a driving circuit for driving the pixel area. Each of the pixels includes a signal-level holding capacitor having two ends, a first transistor that is turned on and off in accordance with a write signal, a second transistor having a gate connected to the one end of the signal-level holding capacitor and a source connected to the other end of the signal-level holding capacitor, a current-driven self-luminous light-emitting element having a cathode held at a cathode potential and an anode connected to the source of the second transistor, a third transistor that is turned on and off in accordance with a driving-pulse signal, and a fourth transistor that is turned on and off in accordance with a control signal. | 09-18-2008 |
| 20080225025 | Display device and electronic apparatus - A transistor connected to a power source for driving a light-emitting element driving transistor and a transistor setting to a predetermined voltage a source voltage of the light-emitting element driving transistor are commonly controlled by a control signal that takes one of three levels. | 09-18-2008 |
| 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 |
| 20080238909 | Display device, driving method therefor, and electronic apparatus - A display device includes a pixel array and a drive unit that drives the pixel array. The pixel array includes first and second scanning lines in rows, signal lines in columns, a matrix of pixels arranged at respective intersections of the scanning lines and the signal lines, power supply lines that supply power to each of the pixels, and ground lines. The drive unit includes a first scanner that sequentially supplies first control signals to the corresponding first scanning lines to perform line-sequential scanning on the pixels on a row-by-row basis, a second scanner that sequentially supplies second control signals to the corresponding second scanning lines in synchronization with the line-sequential scanning, and a signal selector that supplies video signals to the signal lines in synchronization with the line-sequential scanning. Each pixel includes a light-emitting element, a sampling transistor, a drive transistor, a switching transistor, and a pixel capacitor. | 10-02-2008 |
| 20080238955 | Display apparatus, driving method therefor and electronic apparatus - Disclosed herein is a display apparatus, including a pixel array section, and a driving section configured to drive said pixel array section. | 10-02-2008 |
| 20080278410 | Display and electronic apparatus - A display is disclosed, having an interconnect layout that allows easy repairing of a short-circuit defect even at the intersection of row and column interconnects. The display includes: row interconnects configured to be disposed along rows; column interconnects configured to be disposed along columns; and pixels configured to be disposed corresponding to intersections of the row and column interconnects arranged in a lattice manner. Each of the pixels includes at least a sampling transistor, a drive transistor, a holding capacitor, and a light-emitting element. The sampling transistor is turned on in response to a control signal supplied from one of the interconnects to thereby sample a video signal supplied from another of the interconnects and write the video signal to the holding capacitor. The drive transistor supplies the light-emitting element with a drive current dependent upon the video signal written to the holding capacitor. | 11-13-2008 |
| 20080278464 | Pixel circuit and display device - A pixel circuit includes an electro-optical element configured to emit light in response to a drive signal, a drive transistor configured to supply the drive signal to the electro-optical element, a pixel capacitor connected to a control input terminal of the drive transistor, a switching transistor provided at the control input terminal of the drive transistor, and a drive-signal stabilizing circuit configured to maintain the drive signal at a constant level. Each of the drive transistor and the switching transistor has a lightly doped drain structure, and a lightly doped drain region of the switching transistor has a longer length than a lightly doped drain region of the drive transistor. | 11-13-2008 |
| 20080284774 | Display, method for driving display, electronic apparatus - A display includes: a pixel array section configured to include power feed lines, 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 are arranged in a matrix, each of the pixels including a drive transistor and a light-emitting device, one of a pair of current terminals as source and drain of the drive transistor being connected to the power feed line, and a power supply scanner configured to sequentially switch potential of each power feed line between higher potential and lower potential, wherein the power supply scanner switches the higher potential applied to the power feed line between first higher potential and second higher potential at different levels in a predetermined sequence. | 11-20-2008 |
| 20080291125 | Display device, display device driving method, and electronic apparatus - A display device includes a pixel array portion and a driving portion for driving the pixel array portion. The pixel array portion includes row scanning lines, column signal lines, and pixels arranged in a matrix form at intersections of the scanning lines and the signal lines. The driving portion includes a write scanner for supplying a control signal to each of the scanning lines by sequentially scanning the scanning lines in each field and a signal selector for supplying a video signal to each of the signal lines in synchronization with the sequential scanning. The pixels each includes a storage capacitor, a light-emitting element, a sampling transistor for being turned on in response to the control signal, sampling the video signal, and storing the video signal in the storage capacitor, and a drive transistor for supplying a driving current to the light-emitting element in accordance with the stored video signal. | 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 |
| 20080291182 | Display device, driving method thereof, and electronic device - Disclosed herein is a display device including: a pixel array unit; and a driving unit; wherein said 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, each pixel includes a drive transistor, a sampling transistor, a switching transistor, a retaining capacitance, and a light emitting element, said 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 |
| 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 |
| 20090009441 | ORGANIC EL DEVICE AND ORGANIC EL DISPLAY APPARATUS - In the present invention, there is provided an organic electro luminescence device including: an organic electro luminescence light emitting element; and a driving circuit for driving the organic electro luminescence light emitting element, wherein the driving circuit includes (A) an element driving transistor, (B) a video-signal write transistor, and (C) a capacitor having a pair of particular and other electrodes, with regard to the element driving transistor, (A-1) a source/drain area provided on a particular side of the element driving transistor to serve as a particular source/drain area of the element driving transistor is connected to a current supply section, and (A-2) a source/drain area provided on the other side of the element driving transistor to serve as another source/drain area of the element driving transistor is connected to the anode electrode of the organic electro luminescence light emitting element and the particular electrode of the capacitor, forming a second node. | 01-08-2009 |
| 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 |
| 20090085903 | 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 |
| 20090102753 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - Disclosed herein is a display device including: a plurality of sub-pixels configured to be arranged in a matrix and each include 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 configured to be formed in a pixel area in which the plurality of sub-pixels are arranged in a matrix and electrically connect 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. | 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 |
| 20090109208 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed here in is a display apparatus, including, a pixel array section including a plurality of pixels arrayed in rows and columns and each including an electro-optical device, a pixel circuit provided commonly to each plural ones of the pixels in the same pixel row in the pixel array section and including a writing transistor for writing an image signal, a holding capacitor for holding the image signal written by the writing transistor and a driving transistor for driving the electro-optical devices of the plural pixels, and a plurality of scanning circuits configured to time-divisionally and selectively place the electro-optical devices included in the pixels into a forwardly biased state. | 04-30-2009 |
| 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 |
| 20090121974 | Display device, method for driving the same, 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 are arranged in a matrix; and a drive part configured to have at least a write scanner that sequentially supplies a control signal to the scan lines to thereby carry out line-sequential scanning and a signal selector that supplies a video signal to the signal lines in matching with the line-sequential scanning. | 05-14-2009 |
| 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 |
| 20090179838 | Display apparatus, driving method thereof and electronic instrument - An image display apparatus includes a pixel array section and a drive section configured to drive the pixel array section. The pixel array section is a pixel-circuit matrix with pixel circuits each serving as a matrix element. The drive section has at least a write scanner for supplying the control signal to each of the scan lines in order to carry out a sequential scanning operation on the scan lines for every field and a signal selector for supplying a video signal to each of the signal lines with a timing adjusted to the sequential scanning operation. Each of the pixel circuits employs at least a sampling transistor, a drive transistor, a signal holding capacitor and a light emitting device. | 07-16-2009 |
| 20090179839 | Display apparatus, method of driving display apparatus, and electronic apparatus - Disclosed herein is a display apparatus including a pixel array and a driver, the pixel array including rows of scanning lines, rows of feeding lines, columns of signal lines, and a matrix of pixels disposed at the crossings of the scanning lines and the signal lines, the driver including a write scanner for supplying a control signal successively to the scanning lines, a power supply scanner for switching each of the feeding lines between a high potential, a low potential, and an intermediate potential between the high potential and the low potential, and a signal selector for supplying a video signal, which alternately switches between a signal potential and a reference potential, to each of the signal lines. | 07-16-2009 |
| 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 |
| 20090201233 | Display device and electronic apparatus - A display device includes a drive section and a pixel array section including power lines, scanning lines, signal lines, and pixels in a matrix. Each pixel includes a sampling transistor, a drive transistor, a light-emitting element, and a storage capacitor. The drive section includes a write scanner supplying a control signal to one scanning line at a time, and a signal selector supplying a drive signal to each signal line. The sampling transistor applies the drive signal to the drive transistor. The drive transistor supplies a drive current based on the drive signal to the light-emitting element. The write scanner includes output buffers, each outputting a control signal including two pulses to a corresponding scanning line. Each output buffer includes first and second output sections, the first section outputting one pulse and the second section extracting a pulse from a pulse power supply and outputting the extracted pulse. | 08-13-2009 |
| 20090251493 | Pixel Circuit and Display Apparatus - It is aimed to increase efficiency and simplification of a pixel circuit having a threshold voltage correcting function. A sampling transistor Tr | 10-08-2009 |
| 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 |
| 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 |
| 20100033476 | Display device and electronic apparatus - A sampling transistor in embodiments 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 the falling of the control pulse, and samples a video signal Vsig from a signal line SL to write the video signal Vsig to a hold capacitor. A sampling transistor T1 has a double gate structure in which a pair of transistor elements are connected in common. This suppresses change in the threshold voltage of the sampling transistor. | 02-11-2010 |
| 20100033477 | Display panel module and electronic apparatus - Disclosed herein is a self-light-emission-type display panel module including: a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having a signal holding capacitor, a device driving transistor, and a signal sampling transistor; and a third driving section configured to provide a second control line connected to the other main electrode of the device driving transistor sequentially from time to time with the three different driving voltages. | 02-11-2010 |
| 20100033511 | Display panel module and electronic apparatus - Disclosed herein is a self-light-emission-type display panel module wherein a second driving voltage is set at the magnitude of a voltage which drives a device driving transistor employed in each pixel areas to operate in a saturated region during a time span between a start of a period for compensating the device driving transistor and a point of time immediately lagging behind a start of a light emission period and drives the device driving transistor employed in each of the pixel areas each receiving a signal electric potential having a level at least equal to a gradation level determined in advance in a linear region, and a third driving voltage is set at the magnitude of a voltage which drives the device driving transistor employed in each the pixel areas for all gradation levels to operate in a saturated region during the light emission period. | 02-11-2010 |
| 20100045637 | Display device and display drive method - A display device includes: a pixel array including pixel circuits arranged in a matrix state, in which each pixel circuit has a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the drive transistor and an inputted signal value; a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage of the drive transistor by supplying a drive voltage to the drive transistor in a state in which a gate potential of the drive transistor is in a reference value before giving the signal value to the storage capacitor; and a cut-off control means for cutting off the drive transistor by supplying an intermediate voltage which is lower than the drive voltage to the drive transistor in a after-correction period which is the period after the period of the threshold correction operation. | 02-25-2010 |
| 20100045652 | Display device and display drive method - A display device includes: a pixel array including pixel circuits arranged in a matrix, each pixel circuit having a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the transistor and an inputted signal value; and a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage by applying a drive voltage to the transistor in a state where a gate potential of the transistor is fixed in a reference potential before giving the signal value to the storage capacitor. The threshold correction operation is started in a state where the gate potential is made a correction acceleration potential higher than the reference potential only at the threshold correction operation of the first half in the plural threshold correction operations, then, returns the gate potential to the reference potential to be fixed. | 02-25-2010 |
| 20100045654 | Display device and display drive method - A display device includes: a pixel array including pixel circuits arranged in a matrix state, in which each pixel circuit has a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the drive transistor and an inputted signal value; a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage of the drive transistor before giving the signal value to the storage capacitor; and a cut-off control means for allowing the drive transistor to be cut off in at least one after-correction period and for allowing the drive transistor not to be cut off in at least one after-correction period in plural after-correction periods which are periods after the plural threshold correction operation periods. | 02-25-2010 |
| 20100053226 | Image display apparatus and method for driving the same - The present invention sets power supply drive signals DS[ | 03-04-2010 |
| 20100079430 | Display panel module and electronic apparatus - A self-light-emission-type display panel module employs: a pixel array section including pixel areas laid out to form a two dimensional matrix in a display area to serve as pixel areas each having a signal holding capacitor, a device driving transistor, and a signal sampling transistor; a first driving section; a second driving section; and a third driving section. | 04-01-2010 |
| 20100085340 | Display apparatus - A display apparatus includes a panel in which a plurality of pixels illuminated by self-luminous elements are arranged in a matrix and a photodetector disposed on a back surface of the panel for measuring the luminance of the pixels. Each of the pixels has an aperture portion on a reflective layer provided below a luminous layer, to transmit light emitted from the luminous layer. | 04-08-2010 |
| 20100085345 | Display apparatus and display driving method - A display apparatus includes the following components. A pixel array includes matrix-arranged pixel circuits each including at least a light emitting element, a drive transistor in which a drive voltage is applied between the drain and the source to supply a current corresponding to a signal value supplied between the gate and the source to the light emitting element, and a holding capacitor which is connected between the gate and the source of the drive transistor and which holds the input signal value. A mobility correction operating unit supplies the drive voltage to the transistor while the capacitor holds a correction signal value lower than the signal value to perform mobility correction for the transistor. A light emission operating unit allows the capacitor to hold the signal value and supplies the drive voltage to the transistor after correction to perform light emission at a luminance corresponding to the signal value. | 04-08-2010 |
| 20100103156 | Image display apparatus and method of driving the image display apparatus - The present invention sets a scanning line to which a driving signal for power supply is output to a floating state in an entire period of pauses of threshold voltage correction processing or a partial period thereof. | 04-29-2010 |
| 20100103162 | Image display apparatus and method of driving the image display apparatus - The present invention retains a scanning line for power supply in a floating state in a pause provided halfway through a period of emission. | 04-29-2010 |
| 20100117932 | Display device and electronic product - A display device includes: a screen unit; a drive unit; and a signal processing unit, wherein the screen unit includes rows of scanning lines, columns of signal lines, matrix-state pixel circuits and a light sensor, the drive unit includes a scanner supplying a control signal to the scanning lines and a driver supplying a video signal to the signal lines, the screen unit is sectioned into plural regions each having plural pixel circuits, the pixel circuit emits light in accordance with the video signal, the light sensor is arranged with respect to each region and outputs a luminance signal in accordance with the light emission; and the signal processing unit corrects the video signal in accordance with the luminance signal and supplies the signal to the driver. | 05-13-2010 |
| 20100117998 | Display device and electronic product - A display device includes: a screen unit; a drive unit; and a signal processing unit, wherein the screen unit includes rows of scanning lines, columns of signal lines, matrix-state pixel circuits and a light sensor, the drive unit includes a scanner supplying a control signal to the scanning lines and a driver supplying a video signal to the signal lines, the pixel circuit emits light in accordance with the video signal, the light sensor outputs a luminance signal in accordance with the light emission, and the signal processing unit corrects the video signal in accordance with the luminance signal and supplies the signal to the driver. | 05-13-2010 |
| 20100118002 | Display device and electronic product - A display device includes: a screen unit; a drive unit; and a signal processing unit, and wherein the screen unit includes rows of scanning lines, columns of signal lines, matrix-state pixel circuits and a light sensor, the drive unit includes a scanner supplying a control signal to the scanning lines and a driver supplying a video signal to the signal lines, the screen unit is sectioned into plural regions each having plural pixel circuits, the drive unit allows plural pixel circuits belonging to different regions to simultaneously emit light, the pixel circuit emits light in accordance with the video signal, the light sensor outputs a luminance signal in accordance with the light emission and the signal processing unit corrects the video signal in accordance with the luminance signal and supplies the signal to the driver. | 05-13-2010 |
| 20100118003 | Display device and electronic product - A display device includes: a screen unit; a drive unit; a signal processing unit; and a selector, wherein the screen unit includes rows of scanning lines, columns of signal lines, matrix-state pixel circuits and a light sensor, the drive unit includes a scanner supplying a control signal to the scanning lines and a driver supplying a video signal to the signal lines, the screen unit is sectioned into plural regions each having plural pixel circuits, the pixel circuit emits light in accordance with the video signal, the light sensor is arranged with respect to each region and outputs a luminance signal in accordance with the light emission, the selector supplies plural luminance signals to the signal processing unit by switching the signals, and the signal processing unit corrects the video signal in accordance with the luminance signals and supplies the video signal to the driver. | 05-13-2010 |
| 20100118017 | ORGANIC ELECTROLUMINESCENT LIGHT EMITTING UNIT DRIVING METHOD - An organic electroluminescent light emitting unit driving method includes a process (a) to execute preprocessing, a process (b) to execute threshold voltage cancellation processing, a process (c) to execute writing processing, a process (d) to set a first node to a floating state, and a process (e) to execute a series of processes at least once wherein after driving an organic electroluminescent light emitting unit, a reverse voltage is applied between the anode and cathode electrodes of the organic electroluminescent light emitting unit, with a series of processes (a) through (e) being repeated, with an auxiliary driving process being provided wherein a forward voltage is applied between the anode and cathode electrodes of the organic electroluminescent light emitting unit over a certain period, and with a period between the termination of the auxiliary driving process and the termination of the next process (b) being suppressed to 1 millisecond or less. | 05-13-2010 |
| 20100123837 | Display device - A display device includes: a panel in which plural pixels that emit lights according to a video signal are sectioned into plural areas; a light reception sensor that is arranged in each of the areas and outputs a light reception signal according to light emission luminance; and signal processing means. The area includes first and second pixel groups including at least one pixel and plural pixels other than the first pixel group, respectively. The signal processing means includes arithmetic means for outputting an arithmetic signal according to arithmetic operation of an offset value and a light reception value; converting means for outputting digital data according to the arithmetic signal; and correcting means for correcting the video signal according to the digital data and supplying the corrected video signal to the first pixel group. | 05-20-2010 |
| 20100123838 | Display device - A display device includes: a panel in which plural pixels emitting lights according to a video signal are sectioned into plural areas; a light reception sensor arranged in each of the areas and outputting a light reception signal according to light emission luminance; converting means for outputting digital data according to the light reception signal; and signal processing means. The area includes first and second pixel groups including at least one pixel and plural pixels other than the first pixel group, respectively. The signal processing means corrects the video signal according to arithmetic operation of digital data obtained when the first and the second pixel groups are caused to emit lights at predetermined light emission luminance and digital data obtained when light emission luminance of the second pixel group is maintained and that of the first pixel group is changed, and supplies the corrected signal to the first pixel group. | 05-20-2010 |
| 20100141627 | Method of driving organic electroluminescence display apparatus - A display apparatus includes a plurality of light-emitting elements, a driving circuit disposed in each of the plurality of light emitting elements, scanning lines, emission control lines, and data lines. Here, each driving circuit includes a driving transistor supplying current to the corresponding light-emitting element, changes the emission control signal from a first voltage value to a second voltage value to make the light-emitting element be in a non-emission state, and changes the emission control signal from the second voltage value to the first voltage value to correct the threshold voltage of the driving transistor, and the emission control signal has the first voltage value in a period other than a period of the second voltage value for correcting the threshold voltage of the driving transistor in a subsequent non-emission period. | 06-10-2010 |
| 20100149079 | Display device, method of driving display device, and electronic apparatus - A display device includes: a screen section; a drive section; and a signal processing section. The screen section includes scanning lines arranged in rows, signal lines arranged in columns, and pixel circuits arranged in a matrix. The drive section includes a scanner which supplies a control signal to the scanning lines, and a driver which supplies a video signal to the signal lines. Each of the pixel circuits includes a light-emitting element, a light-receiving element, and a drive transistor. The drive transistor outputs a drive current in response to the video signal and outputs a correction current in response to a luminance signal. The light-emitting element emits light in accordance with the drive current. The light-receiving element outputs the luminance signal in accordance with the light-emission. The signal processing section corrects the video signal in accordance with the correction current and supplies the corrected video signal to the driver. | 06-17-2010 |
| 20100149146 | Display - A display includes: a panel in which a plurality of pixels emitting light in response to a video signal are arranged; a light-receiving sensor outputting a light-reception signal in accordance with the light-emission of each pixel; calculation means for calculating correction data on the basis of the light-receiving signal; and drive control means for correcting the video signal on the basis of the correction data, wherein the light-receiving sensor is adhered to an outermost substrate constituting the panel by using a material with a refractive index which is equal to or smaller than that of the substrate. | 06-17-2010 |
| 20100171738 | Driving method of organic electroluminescence emission part - A driving method of a display device having a driving transistor and a display element, one source/drain region of the driving transistor connected to a power supply part, the other source/drain region connected to an anode electrode provided in the display element, the method includes the steps of: setting a potential of the anode electrode by applying a predetermined intermediate voltage to the anode electrode so that a potential difference between the anode electrode of the display element and a cathode electrode at the other end of the display element does not exceed a threshold voltage of the display element; and then holding the driving transistor in OFF-state while a drive voltage is applied from the power supply part to one source/drain region of the driving transistor. | 07-08-2010 |
| 20100231568 | Display apparatus and method of driving the same - Driving a display apparatus by performing write processing for applying an auxiliary video signal to a corresponding data line, then, applying a video signal, instead of the auxiliary video signal, to the corresponding data line, and in a state where a predetermined drive voltage is applied from a power supply portion to one area of the source and drain areas of a drive transistor, applying a voltage based on the auxiliary video signal and a voltage based on the video signal from the corresponding data line to the gate electrode of the drive transistor through a write transistor which is turned on in response to a scanning signal from the corresponding scanning line. | 09-16-2010 |
| 20100259533 | DISPLAY AND A METHOD OF DRIVING THE SAME - A display includes: a pixel circuit array section including a plurality of light-emitting elements and a plurality of pixel circuits; a scanning line drive circuit sequentially selecting the plurality of light-emitting elements and the plurality of the pixel circuits; a signal line drive circuit writing a light emission potential corresponding to a signal potential to a selected pixel circuit; and a control circuit, in which in each frame period, the control circuit outputs a light-off control signal at a lapse of a first period after writing the light emission potential to the selected pixel circuit by the signal line drive circuit, and then the control circuit outputs a light-on control signal at a lapse of a second period, and after that, the control circuit outputs a light-off control signal at a lapse of a third period which is longer than the first period. | 10-14-2010 |
| 20100271354 | 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, 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. | 10-28-2010 |
| 20110012876 | Display device and electronic equipment - A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning. | 01-20-2011 |
| 20110012935 | DISPLAY UNIT - A display unit with which luminance is able to be improved and a wide view angle is able to be secured while increase of the power consumption is inhibited is provided. The display unit includes a first region placing priority on front face luminance in which an aperture ratio of a light emitting region is relatively small, a second region placing priority on view angle luminance in which the aperture ratio of the light emitting region is relatively large, and a drive means for driving the first region and the second region. | 01-20-2011 |
| 20110043502 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes: a dummy pixel provided on a display panel; a reflection film provided on a light-emitting-surface side of the display panel for reflecting light emitted from the dummy pixel; a photodetector provided on an opposite side of the display panel from the light-emitting surface for detecting the light emitted from the dummy pixel and reflected from the reflection film; and a correction circuit for correcting, based on the results of detection by the photodetector, the luminance of effective pixels that contribute to image display. | 02-24-2011 |
| 20110080437 | Display device, driving method of display device, and electronic apparatus - A display device includes: first dummy pixels including a self-emission element emitting first color light corresponding to emission colors of pixels in a display area; second dummy pixels including a self-emission element emitting the first color light and a self-emission element emitting second color light and causing both self-emission elements to emit light at the same time; a deterioration degree calculating unit calculating a deterioration degree in brightness of the self-emission element emitting the first color light on the basis of a brightness detection result of the first dummy pixels and calculating a deterioration degree in current flowing in the self-emission element emitting the first color light on the basis of brightness detection results of the first and second dummy pixels; and a correction unit correcting the brightness of effective pixels contributing to an image display on the basis of the deterioration degree in brightness and the deterioration degree in current calculated by the deterioration degree calculating unit. | 04-07-2011 |
| 20110096046 | Display apparatus, method of driving a display, and electronic device - In a display apparatus including a correction unit and a switching transistor, the correction unit operates in a non-light emission period such that a correction voltage for eliminating an effect of a variation in a characteristic of a driving transistor is stored in a storage capacitor. The switching transistor is disposed between one current terminal of the driving transistor and a light emitting element. The switching transistor turns off during the non-light emission period thereby to electrically disconnect the light emitting element from the one current terminal of the driving transistor thereby preventing a leakage current from flowing through the light emitting element during the period in which the correction unit operates, and thus preventing the correction voltage from having an error due to the leakage current. | 04-28-2011 |
| 20110122324 | Display apparatus, method of driving the display device, and electronic device - A display device, which may control start or stop of light emission of an organic EL element without increasing the number of elements, a method of driving the display device, and an electronic device having the display device are provided. The display device includes: a display section having sets of light emitting elements and pixel circuits arranged two-dimensionally; and a drive section driving each of the pixel circuits based on a video signal. The pixel circuit has a dual-gate first transistor having a first gate and a second gate and controlling electric current flowing into each of the light emitting elements, and a second transistor writing a signal voltage into the first gate in accordance with the video signal. The drive section applies voltage different between for starting light emission of the light emitting element and for stopping light emission of the light emitting element to the second gate. | 05-26-2011 |
| 20110122325 | Display device, method of driving the display device, and electronic device - A display device, which may achieve low power consumption without disturbing high resolution, a method of driving the display device, and an electronic device having the display device are provided. The display device includes: a display section having sets of light emitting elements and pixel circuits arranged two-dimensionally; and a drive section driving each of the pixel circuits based on a video signal. The pixel circuit has a dual-gate first transistor having a first gate and a second gate and controlling electric current flowing into each of the light emitting elements, and a second transistor writing a signal voltage into the first gate in accordance with the video signal. The drive section applies the signal voltage to the pixel circuit such that at least part of values of gate-to-source voltage of the first transistor in a usable range is 5 V or lower. | 05-26-2011 |
| 20110134101 | Display device, method of driving the display device, and electronic device - A display device that may be controlled to be reduced in power consumption, a method of driving the display device, and an electronic device having the display device are provided. The display device includes: a display section including a display region in which a plurality of display pixels are arranged two-dimensionally, the display pixels having first light emitting elements, and a non-display region in which one or multiple adjustment pixels are arranged, each adjustment pixel having a second light emitting element; and a drive section driving each display pixel based on a video signal, and driving the adjustment pixel based on a fixed signal. The drive section applies a power-supply voltage, having a value corresponding to voltage variation in the second light emitting element when the second light emitting element emits light, to each display pixel. | 06-09-2011 |
| 20110134153 | Display apparatus and driving method therefor - A display apparatus includes a pixel array section and a driving section configured to drive the pixel array section. The pixel array section includes a plurality of first scanning lines and a plurality of second scanning lines extending along rows, a plurality of signal lines extending along columns, a plurality of pixels arranged in a matrix at positions at which the first and second scanning lines and the signal lines intersect with each other, and a plurality of power supply lines and a plurality of ground lines configured to perform feeding to the pixels. The driving section includes a first scanner, a second scanner, and a signal selector. Each of the pixels includes a light emitting element, a sampling transistor, a drive transistor, a switching transistor, and a pixel capacitance. | 06-09-2011 |
| 20110134340 | Display device, method of driving the display device, and electronic device - A display device capable of reducing power consumption, a method of driving the display device, and an electronic device having the display device are provided. A display panel has a display region in which a plurality of display elements are arranged two-dimensionally, each display element including a first organic EL element and a pixel circuit, and a non-display region in which one adjustment pixel including a second organic EL element is disposed. A power-supply voltage adjusting circuit sets a value as a latest power-supply voltage, the value being given by adding voltage variation, which is obtained when a constant current having a magnitude necessary for light emission with white luminance (the highest gray level) of the second organic EL element is applied to the second organic EL element, to an initially set power-supply voltage. A power line drive circuit sequentially applies the set power-supply voltage to power lines. | 06-09-2011 |
| 20110163943 | Image display device and electronic appliance - An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage. | 07-07-2011 |
