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 |
20080198103 | Display device and driving method thereof - Disclosed herein is a display device including: a pixel array unit having pixel circuits arranged in a form of a matrix; and a control unit having a writing scanning unit for outputting, to the sampling transistor, a writing scanning pulse. The control unit effects control to supply a control input terminal of the drive transistor with a fixed potential for a threshold value correcting operation for retaining a voltage corresponding to a threshold voltage of the drive transistor in the storage capacitor. When setting a voltage across the storage capacitor to the threshold voltage of the drive transistor by repeating the threshold value correcting operation a plurality of times on a time division basis, the control unit effects control to perform each the threshold value correcting operation and the sampling transistor to a conducting state. | 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 |
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 |
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 |
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 |
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 |
20080225026 | Display apparatus, driving method thereof, and electronic system - A display apparatus includes: a pixel array section including a row of first and second 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 on the signal line to hold the signal potential in the holding capacitor, the driving transistor makes the light emitting device conductive to be in a luminous state in accordance with the held signal potential, and the switching transistor becomes ON in accordance with the control signal supplied in advance of the sampling of the video signal to change the light emitting device to a non-luminous state. | 09-18-2008 |
20080225027 | Pixel circuit, display device, and driving method thereof - Disclosed herein is a display device including a pixel array unit and a control unit. | 09-18-2008 |
20080231199 | Driving method for organic electroluminescence light emitting section - A driving method for an organic electroluminescence light emitting section of an organic EL display apparatus which includes a scanning circuit, an image signal outputting circuit, totaling N×M organic electroluminescence elements, M scanning lines, N data lines, and a current supplying section. The driving method, includes the steps of: carrying out a preprocess; carrying out a threshold voltage cancellation process; carrying out a wiring process; and supplying current to the organic electroluminescence light emitting section to drive the organic electroluminescence light emitting section. | 09-25-2008 |
20080231200 | Driving method for organic electroluminescence light emitting section - A driving method for an organic electroluminescence light emitting section using a driving circuit, the driving circuit includes a driving transistor, an image signal writing transistor, a light emission control transistor, and a capacitor section. The driving method includes the steps of: carrying out a preprocess of applying a first node initialization voltage and applying a second node initialization voltage; carrying out a threshold voltage cancellation process; placing the light emission control transistor into an on state, a writing process of applying an image signal; and placing the image signal writing transistor into an off state so that current is supplied to the organic electroluminescence light emitting section to drive the organic electroluminescence light emitting section. | 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 |
20080231576 | Pixel circuit and display apparatus as well as fabrication method for display apparatus - Disclosed herein is a pixel circuit including: at least one transistor whose conduction state is controlled by a drive signal received by a control terminal; and a driving wiring line to which the drive signal is propagated, the control terminal of the transistor being connected to the driving wiring line. The driving wiring line is connected to a wiring line in a different layer so as to form a multilayer wiring line. | 09-25-2008 |
20080231625 | Display apparatus and drive method thereof and electronic device - Disclosed herein is a display apparatus including a pixel array section and a drive section. The pixel array section has power supply lines, scan lines arranged in row, signal lines arranged in column, and pixels arranged in matrix at intersections of each of the scan lines and each of the signal lines. The drive transistor is connected at one of a pair of current terminals to the light emitting device and at the other of the pair of current terminals to the power supply line. The drive section supplies a control signal to each scan line and a video signal to each signal line to drive each pixel, executing a threshold voltage correcting operation, a write operation, and a light emitting operation. | 09-25-2008 |
20080238830 | Display device, driving method thereof, and electronic apparatus - A display device includes pixel array unit and a driver unit. A sampling transistor samples a signal potential to hold the signal potential in a holding capacitor. A driver transistor flows a drive current to a light emitting element in accordance with the signal potential held. A main scanner in the driver unit outputs the control signal having a shorter pulse width than the time period to the scan line to make the sampling transistor conductive during a time period while the signal line is at the signal potential, thereby adding the signal potential a correction for a mobility of the driver transistor when the signal potential is held in the holding capacitor. | 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 |
20080238901 | 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 to sample a video signal and store the sampled video signal, a holding capacitor configured to hold the sampled video signal, and a driving transistor configured to drive the electro-optical device; and a driving circuit configured to carry out a selective scan operation on the pixel circuits in row units, and a threshold-voltage correction operation to correct variations of the threshold voltage of every driving transistor wherein, before the driving circuit carries out a threshold-voltage correction operation in a horizontal scan period, the driving circuit performs a preparatory operation prior to the horizontal scan period in order to fix each of electric potentials appearing on the gate and the source of the driving transistor at a predetermined level. | 10-02-2008 |
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 |
20080246403 | Display, method for driving display, and electronic apparatus - Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix, each having an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between the gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically. | 10-09-2008 |
20080246747 | Display, method for driving display, and electronic apparatus - Disclosed herein is a display including: a pixel array part configured to include pixels arranged in a matrix, each of the pixels including an electro-optical element, a write transistor for sampling and writing an input signal voltage supplied through a signal line, a holding capacitor for holding the input signal voltage written by the write transistor, and a drive transistor for driving the electro-optical element based on the input signal voltage held in the holding capacitor. | 10-09-2008 |
20080252626 | Self-luminous display panel driving method, self-luminous display panel and electronic apparatus - A self-luminous display panel driving method for driving a self-luminous display panel of the active matrix driving type, includes the step of executing threshold value correction operation for a driving transistor divisionally in a plurality of periods within at least one of which, after a point of time of an end of a preceding correction period till a point of time of a start of a succeeding correction period, a potential to be applied to the drain electrode of the driving transistor is controlled to an intermediate potential between a first potential for lighting driving of the driving transistor and a second potential for initialization applied within a preparation period of the first one of the correction periods. | 10-16-2008 |
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 |
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 |
20090002354 | Display device and method for driving the same - A display device includes a display unit, a horizontal drive circuit, and a vertical drive circuit, the display unit including pixels in a matrix formation, as well as respective signal lines and scan lines via which the drive circuits drive the pixels. Each pixel includes a light-emitting element, a hold capacitor, a write transistor, and a drive transistor. Mobility fluctuations in the drive transistor are compensated for by successively setting the voltage of the signal line to an intermediate voltage and to a tone voltage. In addition, the intermediate voltage is varied in accordance with the tone voltage as well as with the distance from the input terminal of a write signal to a respective pixel. The device thereby compensates for mobility fluctuations in the drive transistor and prevents shading due to irregularities in the waveform of the write signal. | 01-01-2009 |
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 |
20090033652 | Display device and method of driving the same - A display device includes a display portion formed by disposing pixels in matrix, in which the pixel includes: a light emitting element; a signal level holding capacitor; a writing transistor for receiving a write signal from the vertical drive circuit, and being turned ON/OFF by the write signal, thereby setting a voltage across the terminals of the signal level holding capacitor at a signal level on a signal line; and a driving transistor for driving the light emitting device; and the vertical drive circuit sets a signal level of the write signal for an entire or partial time period of a time period for which the drive for the light emitting device is not influenced in a non-emission time period for which light emission of the light emitting device is stopped at a signal level of the write signal on a shorter time period side in other time periods. | 02-05-2009 |
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 |
20090058771 | Method of driving organic electroluminescence emission portion - Disclosed herein is a method of driving an organic electroluminescence emission portion, the method including the steps of: applying a first node initialization voltage to corresponding one of the data lines, and supplying the video signal instead of the first node initialization voltage for a predetermined scanning time period, applying the first node initialization voltage from the corresponding one of the data lines to the first node through the write transistor held in an ON state for initializing the potential at the first node, and holding a state of applying the first node initialization voltage from the corresponding one of the data lines to the first node through the write transistor held in an ON state for holding the potential at the first node. | 03-05-2009 |
20090066616 | Display apparatus and driving method for display apparatus - The present invention provides a display apparatus, including: a display section including a plurality of pixels disposed in a matrix and a plurality of signal lines and a plurality of scanning lines; and a horizontal driving circuit and a vertical driving circuit configured to drive the signal lines and the scanning lines of the display section to display an image on the display section; each of the pixels including a light emitting device; a signal level storage capacitor, a writing transistor, and a driving transistor. | 03-12-2009 |
20090073095 | Display device and driving method of display device - The present invention sets a display device for displaying a desired image on a display section, the display section being formed by arranging pixels in a form of a matrix, by outputting a driving signal for a signal line and a writing signal to the signal line and a scanning line of the display section by a horizontal driving circuit and a vertical driving circuit, wherein the pixel includes a light emitting element, a signal level storage capacitor, a transistor for writing. | 03-19-2009 |
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 |
20090091562 | Display Apparatus and Driving Method Therefor - A sampling transistor T | 04-09-2009 |
20090101904 | DISPLAY DEVICE - Disclosed herein is a display device including: a support substrate; a drive circuit provided on the support substrate; an interlayer insulating film which covers the drive circuit; organic field light-emitting elements arranged in a display region on the interlayer insulating film; and a lead-out wiring extended from the organic field light-emitting elements to a peripheral region around the display region, wherein the interlayer insulating film includes a laminated film made up of an inorganic insulating film and organic insulating film stacked in this order, the organic insulating film has an isolation trench which surrounds the display region, the isolation trench being devoid of the organic insulating film and having the inorganic insulating film at its bottom, and the drive circuit and lead-out wiring are insulated from each other by the inorganic insulating film where the lead-out wiring crosses the isolation trench. | 04-23-2009 |
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 |
20090115765 | Method of driving organic electroluminescence emission portion - Disclosed herein is a method of driving an organic electroluminescence emission portion, the driving method including the steps of: executing steps from preprocessing step to writing step for at least continuous three scanning time periods; applying a first node initialization voltage to corresponding one of the data lines, and supplying the video signal instead of the first node initialization voltage for each of the scanning time periods; applying the first node initialization voltage from the corresponding one of the data lines to the first node through the write transistor held in the ON state, thereby initializing the potential at the first node; and applying the first node initialization voltage from the corresponding one of the data lines to the first node through the write transistor held in an ON state, thereby holding the potential at the first node. | 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 |
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 |
20090122047 | Display apparatus, driving method for display apparatus and electronic apparatus - The present invention provides a display apparatus, includes: a pixel array section including a plurality of scanning lines disposed in rows, a plurality of signal lines disposed in columns, and a plurality of pixels arranged in rows and columns at places at which the scanning lines and the signal lines intersect with each other; and a driving section configured to drive the pixels through the scanning lines and the signal lines; the driving section carrying out block-sequential driving wherein the scanning lines are grouped for each predetermined number to form blocks and the pixels disposed in rows and columns are sequentially driven in a unit of a block and line-sequential driving wherein the scanning lines are scanned in each of the blocks to sequentially drive the pixels in a unit of a row. | 05-14-2009 |
20090122053 | Display apparatus, driving method for display apparatus and electronic apparatus - A plurality of scanning periods are combined to form a composite period (2H). Within the first period of the front half, threshold value (Vth) correction is carried out all at once, and within the second period of the latter half, signal (Vsig) writing operation is carried out. High speed writing can be carried out even where the scanning period is shortened. | 05-14-2009 |
20090128017 | ORGANIC ELECTRIC FIELD LIGHT-EMITTING DISPLAY DEVICE - An organic electric field light-emitting display device includes: a plurality of pixel circuits, each disposed at one of the intersections between a plurality of signal lines and a plurality of scan lines, each of the pixel circuits including an organic electric field light-emitting element; a power auxiliary circumferential line electrically connected to one of two electrodes adapted to apply an electric field to the organic electric field light-emitting element, the power auxiliary circumferential line being disposed in a ring-like arrangement around the pixel arrangement region; and a plurality of dummy wirings formed on the underlying layer of the power auxiliary circumferential line between the intersections between either one of the plurality of signal lines and the plurality of scan lines and the power auxiliary circumferential line, the plurality of dummy wirings being insulated and isolated from the signal or scan line in proximity. | 05-21-2009 |
20090128027 | ACTIVE MATRIX DISPLAY DEVICE - An active matrix display device includes a driving section provided on a substrate, an insulating film stacked on the driving section, and light-emitting elements arranged in a matrix on the insulating film, each of the light-emitting elements having a light-emitting layer between 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 includes an auxiliary wiring provided on the same layer as the lower electrode of the light-emitting element and adapted to adjust the electrical resistance of the upper electrode, and drive wirings disposed in the underlying layer of the auxiliary wiring via the insulating film and adapted to drive the light-emitting element, wherein the auxiliary or drive wiring is routed in a roundabout manner where the auxiliary and drive wirings overlap. | 05-21-2009 |
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 |
20090135166 | Display apparatus and fabrication method and fabrication apparatus for the same - A pixel array section includes a plurality of pixel circuits disposed in a matrix and each including a driving transistor, a storage capacitor, an electro-optical element, and a sampling transistor. Each pixel circuit includes a pixel divided into a plurality of divisional pixels for each of which an electro-optical element is provided, and a test transistor provided between the driving transistor and the electro-optical elements for carrying out on/off operations for specifying whether or not the electro-optical element is a dark spot element so that the electro-optical element of the dark spot can be specified. The number of the test transistors is smaller than the number of the divisional elements of the original one pixel. | 05-28-2009 |
20090135174 | Display apparatus, driving method for display apparatus and electronic apparatus - The present invention provides a display apparatus, includes: a pixel array section; and a driving section; the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other. The driving section including a write scanner and a signal selector. | 05-28-2009 |
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 |
20090167652 | Display device, method for driving same, and electronic apparatus - In an embodiment of the present invention, a signal driver employs a two-stage system in which the potential of a signal line (SL) is switched from a reference potential (Vofs) to an intermediate potential (Vofs | 07-02-2009 |
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 |
20090195480 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including a pixel array section; and a driving section; the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other, and a plurality of feed lines disposed in parallel to the scanning lines, the driving section including a signal selector for supplying a driving signal having a signal potential to the signal lines, a write scanner for successively supplying a control signal to the scanning lines, and a drive scanner for supplying a power supply, which changes over between a high potential and a low potential, to the feed lines. | 08-06-2009 |
20090195527 | Display apparatus, driving method for display apparatus and electronic apparatus - A display apparatus, including: a pixel array section; and a driving section; the pixel array section including a plurality of scanning lines disposed along the direction of a row, a plurality of signal lines disposed along the direction of a column, a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other, and a plurality of feed lines disposed in parallel to the scanning lines; the driving section including a scanner for successively supplying a control signal to the scanning lines with a phase difference of a horizontal period, a selector for supplying an image signal having a signal potential, which changes over between a reference potential and a signal potential within each horizontal period, to the signal lines, and a power supply for supplying a power supply voltage, which changes over between a high potential and a low potential within each horizontal period, to the feed lines. | 08-06-2009 |
20090200937 | DISPLAY DEVICE AND METHOD OF MANUFACTURING DISPLAY DEVICE - A display device includes lead wiring drawn out from a display region to a peripheral region of the display region; a first insulating film covering the lead wiring disposed on a substrate; a plurality of pieces of annular wiring disposed in a state of enclosing the display region in a multiple manner between the display region and the peripheral region on the first insulating film; a second insulating film covering the annular wiring disposed above the substrate, and having a groove pattern having each of the pieces of annular wiring as a bottom surface; and a light emitting element disposed on the second insulating film within the display region. | 08-13-2009 |
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 |
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 |
20090219234 | EL display panel module, EL display panel, integrated circuit device, electronic apparatus and driving controlling method - Disclosed herein is an EL display panel module, including: a pixel array section including a panel serving as a substrate, and a plurality of pixels disposed in a matrix on the panel and each including a pixel circuit, and a light emitting region; and a driving circuit for driving the pixel circuits such that a threshold value correction operation is carried out commonly for plural ones of the pixel circuits which are connected to each signal line and writing of a signal potential corresponding to a gradation value is executed time-sequentially for the individual pixel circuits, the driving circuit applying a reset potential lower than a reference potential for the threshold value correction to the plural ones of the pixel circuits before first writing of the signal potential after the threshold value correction operation is completed; the pixel array section and the driving circuit being mounted on the same substrate. | 09-03-2009 |
20090219235 | 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. | 09-03-2009 |
20090219278 | Electroluminescence display panel, electronic apparatus and driving method for electroluminescence display panel - An EL display panel having a pixel structure ready for an active matrix driving method, includes: an input signal line driving section configured to output an intermediate potential for mobility correction, a threshold value correction potential and a signal potential corresponding to a gradation value in order for each horizontal scanning period; and a writing controlling driving section configured to have a control period for keeping an on state of a sampling transistor for controlling writing of the potentials within a period beginning with a timing midway of an application period of the intermediate potential and ending with another point of time midway of an application period of the signal potential. | 09-03-2009 |
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 |
20090244049 | Panel and driving controlling method - The present invention provides a panel, including: a plurality of pixel circuits disposed in rows and columns and each including a light emitting element for emitting light in response to driving current, a sampling transistor for sampling an image signal, a driving transistor for supplying the driving current to the light emitting element, and a storage capacitor for storing a predetermined potential; a power supplying section configured to supply a predetermined power supply voltage to the pixel circuits disposed in rows and columns; and a power supply line for connecting all of the pixel circuits disposed in rows and columns and the power supply section to each other. | 10-01-2009 |
20090244050 | PANEL AND DRIVING CONTROLLING METHOD - The present invention provides a panel, including: a plurality of pixel circuits disposed in rows and columns and each including a light emitting element for emitting light in response to driving current, a sampling transistor for sampling an image signal, a driving transistor for supplying the driving current to the light emitting element, and a storage capacitor for storing a predetermined potential; and a power supplying section configured to supply a power supply voltage of a high potential or a low potential at a time to all of the pixel circuits arranged in rows and columns; the power supplying section setting the power supply voltage to be supplied to the low potential, with which the gate-source voltage of the driving transistor becomes higher than a threshold voltage of the driving transistor, by Q times within a one-field period, Q being equal to or greater than 2. | 10-01-2009 |
20090244055 | Image displaying apparatus and image displaying method - An image displaying apparatus is configured to display a desired image on an image displaying section employed in the image displaying apparatus by making use of a signal-line driving circuit and a scan-line driving circuit to drive pixel circuits. Each of the pixel circuits employs at least a light emitting device, a signal-level holding capacitor, a driving transistor for driving the light emitting device and a signal writing transistor. The signal-line driving circuit and the scan-line driving circuit drive each of the pixel circuits so as to put the light emitting device employed in the pixel circuit in a no-light emission state of emitting no light in a no-light emission period and a light emission state of emitting light in a light emission period repeatedly. | 10-01-2009 |
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 |
20090256168 | DISPLAY ELEMENT, MANUFACTURING METHOD OF THE SAME AND DISPLAY DEVICE - A display element including: a first electrode; an auxiliary wiring formed on the periphery of the first electrode in such a manner as to be insulated from the first electrode; an insulating portion having first and second openings, the first opening adapted to expose the first electrode, and the second opening adapted to expose the auxiliary wiring, an organic layer adapted to cover at least the exposed surface of the first electrode in the first opening; and a second electrode adapted to cover at least the organic layer and the exposed surface of the auxiliary wiring in the second opening, wherein the organic layer has a layered structure which includes at least a hole injection layer and light-emitting layer stacked in this order from the side of the first electrode, and the edge of the hole injection layer is provided more inward than the edge of the organic layer. | 10-15-2009 |
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 |
20090262102 | Display device, driving method of display device, and electronic device - Disclosed herein is a display device including a pixel array unit, a first scanning circuit, a second scanning circuit and a selecting circuit. | 10-22-2009 |
20090262258 | 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. | 10-22-2009 |
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 |
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 |
20090284451 | DISPLAY DEVICE - A display device includes: a pixel array having a plurality of pixels arranged in a matrix form, each of the pixels including a sampling transistor configured to sample a data potential from a video signal line which is insulated from and intersects a control line in response to the change in potential of the control line, and a light-emitting element configured to emit light at the brightness commensurate with the magnitude of the post-sampling data potential. | 11-19-2009 |
20090288865 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes an anode electrode provided for each pixel, an opening insulation film which covers the periphery of the anode electrode and which defines an pixel opening, and a storage capacitor disposed below the anode electrode through a planarizing insulation film, having a function to store charge for driving a pixel, and including capacitor electrodes wider than the pixel opening. | 11-26-2009 |
20090289963 | Display device, method of laying out light emitting elements, and electronic device - Disclosed herein is a display device in which light emitting elements of a plurality of colors including a light emitting element emitting blue light are formed in each pixel on a substrate on which a transistor is formed for each sub-pixel, and a plurality of pixels formed with sub-pixels of the plurality of colors as a unit are arranged in a form of a matrix, wherein relative positional relation between transistors of sub-pixels of respective light emission colors including blue light and a light emitting section of a light emitting element emitting the blue light is laid out such that distances between the transistors of the sub-pixels of the respective light emission colors including the blue light and the light emitting section of the light emitting element emitting the blue light are equal to each other for the respective colors. | 11-26-2009 |
20090294163 | Display device, method of laying out wiring in display device, and electronic device - A display device includes: a pixel array section having pixels arranged in a form of a matrix on a display panel; a first terminal group disposed on the display panel so as to correspond to each control line of a first control line group arranged in each pixel row of the pixel array section; a first wiring group for electrically connecting each terminal of the first terminal group to each control line of the first control line group; a second terminal group disposed on the display panel for a second control line group arranged in each pixel row of the pixel array section with a plurality of control lines as a unit; and a second wiring group for electrically connecting each terminal of the second terminal group to each control line of the second control line group through parts between the terminals of the first terminal group. | 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 |
20090295773 | Display device - A display device, including: a pixel array portion having pixel circuits disposed in a matrix, each of the pixel circuits including a drive transistor for generating a drive current, and an electro-optic element connected to an output terminal of the drive transistor, and power source supply lines as scanning lines through which pulse-like power source voltages are supplied to power source supply terminals of the drive transistors, respectively, wired therein; wherein power source contact portions through which the corresponding one of the power source supply terminals and the corresponding one of the power source supply lines are connected to each other are provided at predetermined distances from one another in a plurality of portions every drive transistor. | 12-03-2009 |
20090295785 | DISPLAY APPARATUS, DRIVING METHODS AND ELECTRONIC INSTRUMENTS - A display apparatus employs a pixel array section including pixel circuits forming a matrix, signal lines as columns, scan lines as rows and power-supply lines, and driving sections. The driving sections are a signal selector, a write scanner and a drive scanner. The signal selector provides an electric potential representing a gradation or a predetermined reference electric potential. The write scanner provides a control signal. The drive scanner provides a power-supply voltage changing the electric potential from high to low. The drive scanner drives adjacent power-supply lines as a group. The number of lines as a group is determined in advance. The drive scanner switches a power-supply voltage from high to low and vice versa, and applies the voltage to groups by shifting the phase from group to group. The voltage is supplied to a group at the same phase and switched the electric potential. | 12-03-2009 |
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 |
20090315918 | Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including: a display panel having 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 temperature detection section configured to detect the temperature of the display panel; and a control section configured to control the period of the mobility correction process based on a result of the detection by the temperature detection section. | 12-24-2009 |
20090322722 | Display device, a method of driving the same, and electronic apparatus including the same - Disclosed herein is a display device, including a display portion including a plurality of first wirings and a plurality of second wirings each disposed in rows, respectively, a plurality of third wirings disposed in columns, respectively, and a plurality of light emitting elements and a plurality of pixel circuits each disposed in a matrix, a first drive portion for successively applying a selection pulse containing a first voltage, a second voltage and a third voltage to the plurality of first wirings, a second drive portion for successively applying a current control pulse in accordance with which a transient current is caused to flow through the pixel circuit to the plurality of second wirings, and a third drive portion for applying a signal pulse containing a signal potential corresponding to a video signal to each of the plurality of third wirings. | 12-31-2009 |
20090322730 | DISPLAY DEVICE - Disclosed herein is a display device that allows a vertical scanning line to be shared between a plurality of rows without increasing the number of control lines or control signals, the display device including pixel circuits; vertical scanning lines; and horizontal scanning lines. | 12-31-2009 |
20090322734 | Display device - Disclosed herein is a display device including a pixel array section having pixel circuits arranged in a form of a matrix, the pixel circuits each including a driving transistor for generating a driving current, an electrooptic element connected to an output terminal of the driving transistor, a storage capacitor for retaining information corresponding to signal amplitude of a video signal, and a sampling transistor for writing the information corresponding to the signal amplitude to the storage capacitor; a vertical scanning section configured to generate a vertical scanning pulse for vertical scanning of the pixel circuits; a horizontal scanning section configured to supply the video signal to the pixel circuits so as to coincide with the vertical scanning in the vertical scanning section; and a driving signal constancy achieving circuit for holding the driving current constant. | 12-31-2009 |
20100006853 | ELECTRONIC DEVICE AND METHOD OF MANUFACTURING THE SAME - An electronic device includes: a substrate; and a plurality of thin film transistors disposed in lines at least in one direction in terms of planar view when viewed from one principal surface of the substrate; each of the plurality of thin film transistors including a preliminary heating layer on the substrate, an insulating layer on the preliminary heating layer, and a thin film semiconductor layer a part of which overlaps the preliminary heating layer through the insulating film, wherein a portion of the preliminary heating layer other than the portion overlapping the thin film semiconductor layer has a planar shape which is line-symmetrical with respect to an axis extending in a direction perpendicularly intersecting the one direction. | 01-14-2010 |
20100007583 | Image display device - Disclosed herein is an image display device including a display section formed by arranging pixel circuits in a matrix form. Each pixel circuit includes at least a light emitting element, a drive transistor, a holding capacitor, and a write transistor. A light emission and non-light emission periods are alternately repeated. A light emission period start voltage and a non-light emission period start voltage are alternately output to the signal line. The terminal voltage of the holding capacitor is set to start the light emission and non-light emission periods. The write signal is set to sequentially delay the timings. The power drive signal is set in units of a plurality of successive lines. The drain voltage of the drive transistor is pulled up to high level at a time other than when the one of the terminals is connected to the signal line by the write signal in different lines. | 01-14-2010 |
20100013821 | DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC DEVICE - A display device includes: a display unit including first and second lines, light emitting elements and pixel circuits; a first drive unit sequentially applying a selection pulse to the first lines; and a second drive unit applying a signal pulse including first to third voltages to each of the second lines. Each of the pixel circuits includes a first transistor sampling the signal pulse, and a second transistor driving one of the light emitting elements. The first drive unit applies the selection pulse when the first voltage is being applied by the second drive unit, before a correction of a threshold voltage of the second transistor is initiated and within a period that the one of the light emitting elements is being turned out, and the first drive unit applies the selection pulse when the second voltage is being applied by the second drive unit. | 01-21-2010 |
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 |
20100026729 | Active-matrix display apparatus driving method of the same and electronic instruments - Disclosed herein is an active-matrix display apparatus, wherein if any particular one of N light emitting sub-devices pertaining to any specific one of pixel circuits is defective, the particular light emitting sub-device is electrically disconnected from the specific pixel circuit and the magnitude of a driving current supplied to the (N−1) remaining light emitting sub-devices pertaining to the specific pixel circuit is adjusted so that the (N−1) remaining light emitting sub-devices receive a driving current from a device driving transistor with a magnitude suppressed to a value equal to ((N−1)/N) times the magnitude of a driving current which is supplied to a normal pixel circuit not including a defective light emitting sub-device. | 02-04-2010 |
20100033089 | DISPLAY DEVICE - A display device includes: a light emitting layer configured to emit light in accordance with current; a first pixel separation film configured to define a first opening for providing a light emitting region when the light emitting layer emits light; and a second pixel separation film laminated on the first pixel separation film and configured to define a second opening that is restricted so as not to gradually become wider as apart from a surface contacted with the first pixel separation film. | 02-11-2010 |
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 |
20100033510 | Image pickup apparatus and method of driving the same - A display apparatus includes: a display area formed by disposing pixel circuits in a matrix; a signal line drive circuit for generating drive signals for signal lines in accordance with image data, and outputting the drive signals for the signal lines to signal lines of the display area, respectively; and a scanning line drive circuit for outputting write signals to scanning lines for write of the display area, respectively; wherein when there is no change in the image data, the scanning line drive circuit stops the write signals from being outputted. | 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 |
20100039421 | DRIVING METHOD FOR ORGANIC ELECTROLUMINESCENCE LIGHT EMITTING SECTION - A driving method for an organic EL light emitting section is provided which achieves optimization of a mobility correction process for a transistor of a driving circuit in response to luminance. In a driving method for an organic EL light emitting section wherein a driving circuit | 02-18-2010 |
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 |
20100045648 | Image display device and driving method of image display device - Disclosed herein is an image display device including a display section, a signal line driving circuit, and a scanning line driving circuit. The display section is formed by arranging pixel circuits in a form of a matrix. The signal line driving circuit is configured to output a driving signal for a signal line to the signal line of the display section. The scanning line driving circuit is configured to output a driving signal for a scanning line to the scanning line of the display section. The pixel circuits each include at least a light emitting element, a driving transistor configured to drive the light emitting element connected to a source by a driving current corresponding to a gate-to-source voltage, a storage capacitor configured to retain the gate-to-source voltage, and a writing transistor configured to set a terminal voltage of the storage capacitor by a voltage of the signal line. | 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 |
20100045709 | DISPLAY APPARATUS, DISPLAY CONTROL APPARATUS, AND DISPLAY CONTROL METHOD AS WELL AS PROGRAM - A display apparatus includes: a plurality of pixel circuits arrayed in a matrix fashion; a light emitting circuit provided to each pixel circuit and emitting light correspondingly to a drive current; and a detection circuit provided to a predetermined pixel circuit and outputting a signal according to a temperature that varies with luminance of the light emitting circuit. | 02-25-2010 |
20100053131 | Image display apparatus - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 03-04-2010 |
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 |
20100085285 | Display apparatus, display data processing device, and display data processing method - A display apparatus includes: an edge processing section extracting an edge component of a display data signal; a display data signal processing section changing the display data signal according to a level conversion signal and adding the edge component thereto; a level conversion signal generating section changing the level conversion signal according to the display data signal and a signal output from the display data signal processing section; and a display section performing a display operation according to the signal output from the display data processing section. | 04-08-2010 |
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 |
20100118014 | Display device, electronic device, and method of driving display device - A display device is provided having improved reliability compared with the related art. The display device includes, for each pixel: a photo-emission element and a first MOS transistor connected in series between a first power source line and a second power source line; a capacitor connected to be inserted between a gate and a source of the first MOS transistor; and a second MOS transistor connected to be inserted between a signal line to be applied with a image signal voltage and the gate of the first MOS transistor, the second MOS transistor being controlled by a scan signal to change between ON-state and OFF-state, wherein ON-period of the first transistor is established within a period in which the photo-emission element is maintained to an extinction state and the signal line is applied with a voltage having a fixed level independent from the image signal voltage. | 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 |
20100149075 | DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC APPARATUS - A display device includes a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal. | 06-17-2010 |
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 |
20100149143 | Display apparatus, pixel layout method for display apparatus, and electronic device - In a display apparatus, a plurality of pixels are disposed in an array. Each pixel includes: an electro-optical element; a write transistor that writes a picture signal; a drive transistor that drives the electro-optical element according to the picture signal written by the write transistor; a hold capacitor, connected between the gate and source electrodes of the drive transistor, that holds the picture signal written by the write transistor; and an auxiliary capacitor, connected between the anode of the electro-optical element and a fixed potential node. Each auxiliary capacitor is formed straddling the boundary between specific pixel pairs adjacent in the pixel layout direction on a pixel row. An island metal pattern is formed between pixel pairs other than the specific pixel pairs, at a site corresponding to that of the auxiliary capacitor. | 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 |
20100149152 | Display device, driving method for the display device, and electronic apparatus - A display device includes: a pixel array unit in which pixels are arranged in a matrix shape, each of the pixels including an electro-optic element, a writing transistor that writes a video signal, a driving transistor that drives the electro-optic element according to the video signal written by the writing transistor, and a storage capacitor that is connected between a gate electrode and a source electrode of the driving transistor and stores the video signal written by the writing transistor; and a power supply line that supplies power supply potential to the pixels, the power supply potential selectively taking first potential for supplying an electric current to the driving transistor and second potential for applying reverse bias to the electro-optic element. | 06-17-2010 |
20100149153 | Display device, display device drive method, and electronic apparatus - In a display device in which pixels are arranged in a matrix, each pixel has an electro-optical element, a write transistor that writes a video signal, a drive transistor that drives the electro-optical element in accordance with the video signal written by the write transistor, a storage capacitor that is connected between a gate electrode and a source electrode of the drive transistor to store the video signal written by the write transistor. Current is prevented from flowing to the drive transistor when the write transistor writes the video signal. | 06-17-2010 |
20100149164 | Display device, display data processing device, and display data processing method - A display device includes: an extraction unit extracting an edge component of a display data signal; an adder unit adding an edge component to the display data signal; a signal generation unit generating a control signal in accordance with the display data signal and an output signal of the adder unit; a correction unit carrying out correction processing on the edge component in accordance with the control signal and outputting the corrected edge component to the adder unit; and a display unit carrying out a display operation in accordance with the output signal of the adder unit. | 06-17-2010 |
20100156860 | Display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel. | 06-24-2010 |
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 |
20100188384 | Display apparatus and method of driving same - A display apparatus including a pixel array and a driver configured to drive the pixel array, the pixel array having scanning lines as rows, signal lines as columns, a matrix of pixels disposed at respective intersections of the scanning lines and the signal lines, and power supply lines disposed along respective rows of the pixels, the driver having a main scanner for successively supplying control signals to the scanning lines to perform line-sequential scanning on the rows of the pixels, a power supply scanner for supplying a power supply voltage, which selectively switches between a first potential and a second potential, to the power supply lines in synchronism with the line-sequential scanning, and a signal selector for supplying a signal potential, which serves as a video signal, and a reference potential to the signal lines as the columns in synchronism with the line-sequential scanning. | 07-29-2010 |
20100201717 | Display device and driving method thereof - A driving method for a display device includes the steps of: performing writing processing to apply a video signal to a first node over a data line via a writing transistor with a predetermined driving voltage applied from a power supply to one of source/drain regions of a driving transistor, wherein the trailing edge of a scanning signal to be applied to a gate electrode of the writing transistor at the writing processing step is inclined; and the luminance characteristic of display elements connected onto each of a scan lines is controlled by controlling the crest value of the scanning signal, which is applied to first to M-th scan lines, for each of the scan lines. | 08-12-2010 |
20100214276 | DISPLAY APPARATUS, DRIVING METHOD OF DISPLAY APPARATUS AND ELECTRONIC EQUIPMENT - Prior to increasing the voltage level of an input signal to be sampled in a step-by-step manner and writing a signal voltage Vsig at a desired voltage level, a precharge is performed which writes a precharge voltage Vpre, lower than the signal voltage Vsig, so as to apply the same voltage Vpre to the gate of a drive transistor in advance. This not only provides a reduced gate-to-source voltage of the drive transistor at the time of writing of the signal voltage Vsig but also extends a mobility correction time required for a mobility correction operation. The extension of the mobility correction time required for the mobility correction operation ensures a relatively smaller variation in the correction time, thus suppressing the variation in brightness. The extension also permits a write pulse to be set to the optimal pulse width. | 08-26-2010 |
20100230681 | Display unit - A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity. | 09-16-2010 |
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 |
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 |
20100245324 | DISPLAY APPARATUS AND ELECTRONIC INSTRUMENT - A display apparatus includes: a plurality of pixel circuits; and a signal supply circuit which supplies any one of a potential of a video signal, an extinction potential for extinguishing light-emitting devices, and a high-level potential higher than the extinction potential, wherein each of the plurality of pixel circuits includes a storage capacitor which retains a voltage corresponding to the video signal, a drive transistor which supplies a current based on the voltage retained in the storage capacitor to the corresponding light-emitting device, a light-emitting device which emits light in accordance with the current supplied from the drive transistor, and a write transistor which writes the voltage corresponding to the video signal to the storage capacitor after the potentials supplied by the signal supply circuit in order of the high-level potential and the extinction potential are given to the gate terminal of the drive transistor. | 09-30-2010 |
20100253659 | DISPLAY APPARATUS AND DRIVING METHOD FOR DISPLAY APPARATUS - Disclosed herein is a driving method for a display apparatus which includes: (1) a scanning line; (2) a data line; (3) a display element; (4) a feeder line; (5) a current detection line; and (6) a switching element, the driving method for a display apparatus including a current detection step of placing the switching element into an on state in a state wherein a potential of the current detection line is maintained so that a potential difference between the second end of a light emitting element and the current detection line does not exceed a threshold voltage of the light emitting element and supplying current flowing through a driving transistor to the current detection line so as to be detected. | 10-07-2010 |
20100253674 | METHOD FOR DRIVING DISPLAY ELEMENT AND METHOD FOR DRIVING DISPLAY DEVICE - Disclosed herein is a method for driving a display element including a current-driven light emitting part and a drive circuit, the drive circuit including a write transistor, a drive transistor, and a capacitive part, the method including the steps of: executing threshold voltage cancel processing of changing potential of the second node toward potential obtained by subtracting threshold voltage of the drive transistor from potential of the first node in a state in which the potential of the first node is kept; and executing write processing of applying a video signal from the data line to the first node via the write transistor turned to an on-state by a scan signal from the scan line. | 10-07-2010 |
20100259532 | Display device and display driving method - Disclosed herein is a display device including: a pixel array configured to include pixel circuits that are arranged in a matrix and each have at least a light emitting element, a switching transistor for inputting a signal value supplied to a signal line, and a drive transistor for current application to the light emitting element dependent on the input signal value; a signal value output unit configured to output signal values given to the pixel circuits in the pixel array to the signal lines disposed on the pixel array; and a write controller configured to give, to the pixel circuits on a line-by-line basis, scan pulses for carrying out conduction control of the switching transistor and inputting the signal value on the signal line to the pixel circuit, and allow the scan pulses given to lines to each have a pulse waveform set depending on mobility of the drive transistors in a corresponding one of the lines of the pixel array. | 10-14-2010 |
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 |
20100271347 | Display unit - A display unit with which diffraction reflection is able to be decreased is provided. The display unit includes a display section having an organic EL device and a pixel circuit for every pixel. The pixel circuit has a first transistor for writing a video signal and a second transistor for driving the organic EL device based on the video signal written by the first transistor. The second transistor has a gate, a source and a drain. The organic EL device has an anode, an organic layer, and a cathode. An upper face of the source or the drain is formed at least in a region opposed to the anode or the cathode. | 10-28-2010 |
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 |
20100289782 | Pixel circuit, display apparatus, and driving method for pixel circuit - A pixel circuit includes: a light emitting element; a driving transistor for applying current to the light emitting element in response to a signal value applied between a gate and a source thereof when a driving voltage is applied between a drain and the source thereof; first and second capacitors connected in series between the gate and the source of the driving transistor; a sampling transistor connected between the gate of the driving transistor and a predetermined signal line; a switching transistor connected to supply a potential of the signal line to a node between the first and second capacitors; and a light detection element connected between the gate of the driving transistor and the node between the first and second capacitors for supplying current of a current amount in accordance with an emitted light amount of the light emitting element. | 11-18-2010 |
20100289793 | Driving method for pixel circuit and display apparatus - Disclosed here is a driving method for a pixel circuit which includes a light emitting element, a driving transistor for applying current in response to a signal value applied between a gate and a source thereof to the light emitting element when a driving voltage is applied between a drain and the source thereof, and a holding capacitor connected between the gate and the source of the driving transistor for holding the input signal value, the driving method comprising steps carried out within a light emitting period of one cycle which includes a no-light emitting period and the light emitting period, the steps including a first step to a sixth step. | 11-18-2010 |
20100289829 | Display apparatus, light detection method and electronic apparatus - Disclosed herein is a display apparatus, including a plurality of pixel circuits disposed in a matrix at positions at which a plurality of signal lines and a plurality of scanning lines cross each other and individually including a light emitting element, a light emission driving section adapted to apply a signal value to each of the pixel circuits to cause the pixel circuit to emit light of a luminance corresponding to the signal value, and a light detection section including a light detection element which functions as a switching element by switching the light detection element between an on state and an off state and functions as a light sensor for detecting light from the light emitting element in the off state, the light detection section further including a detection signal outputting circuit formed in the light detection section for outputting light detection information from the light detection element. | 11-18-2010 |
20100289830 | Display device and display method - Disclosed herein is a display device including: a pixel circuit for generating a signal value for display by synthesizing signal values input within one horizontal period, and making display at a gradation corresponding to the signal value for display; a signal line disposed in a form of a column on a pixel array where the pixel circuit is arranged in a form of a matrix; a scanning line disposed in a form of a row on the pixel array; a signal line driving section configured to output signal values as a signal value to be supplied to each pixel circuit to the signal line within one horizontal period; and a scanning line driving section configured to sequentially introduce the signal values within one horizontal period, the signal values being generated in the signal line, into the pixel circuit in each row by driving the scanning line. | 11-18-2010 |
20100289831 | Display apparatus, method for controlling light detection operation - Disclosed herein is a display apparatus, including: pixel circuits disposed in a matrix at positions at which a plurality of signal lines and scanning lines cross each other and each including a light emitting element; a light emission driving section adapted to apply a signal value to each of the pixel circuits; a light detection section having a light sensor; a correction information production section adapted to detect the light detection information outputted to the light detection line and supply information for correction of the signal value corresponding to a result of the detection to the light emission driving section; and an initialization control section adapted to set all nodes of the detection signal outputting circuit to an equal potential within a period in which the light detection section does not carry out the light detection operation. | 11-18-2010 |
20100289832 | Display apparatus - A display apparatus includes: a pixel array including a plurality of pixel circuits disposed in a matrix and each including a light emitting element, a driving transistor for supplying current in response to a signal value applied between a gate and a source thereof to the light emitting element when a driving voltage is applied between a drain and the source thereof, and a holding capacitor connected between the gate and the source of the driving transistor for holding the input signal value, the driving transistor having a multi-gate structure wherein two or more transistors formed using an oxide semiconductor material are connected in series; and a light emission driving section. | 11-18-2010 |
20100309174 | DISPLAY DEVICE, DRIVING METHOD OF DISPLAY DEVICE, AND ELECTRONIC DEVICE PERFORMING DUTY CONTROL OF A PIXEL - A display device capable of controlling the emission period of pixels of a display screen individually pixel by pixel. In some embodiments, there is provided an apparatus comprising a display screen and at least one driving circuit. The display screen comprises a plurality of pixels. Each pixel comprises a light-emitting element and a control circuit to receive an input having a value that sets a time period for which the light-emitting element is to emit light and to control the light-emitting element to emit light for the time period. The at least one driving circuit is adapted to control the plurality of pixels to emit light by providing to each pixel a signal having a value that sets a length of time for which the pixel is to emit light. The signal value for a first pixel is different from the signal value for a second pixel. | 12-09-2010 |
20100309186 | Drive method of display device - A drive method of a display device includes the steps of: performing threshold voltage cancel processing at least once, which changes a potential of a second node of a display device toward a potential obtained by subtracting a threshold voltage of a drive transistor from a potential of a first node by applying a given drive voltage to one source/drain region of the drive transistor from a feeding line while maintaining the potential of the first node; and then, performing writing processing which applies a video signal to the first node from a data line through a write transistor, wherein the sum of lengths of periods in which the threshold voltage cancel processing is performed is so set as to be shorter as a frame frequency becomes higher. | 12-09-2010 |
20110001741 | Display device and electronic apparatus - A display device includes: plural pixel circuits; and a scanning circuit that supplies a scanning signal for supplying a video signal including information of a display target video to the plural pixel circuits and transitions potential of the scanning signal to off-potential halfway in a mobility correction period for correcting mobility, wherein each of the plural pixel circuits includes a storage capacitor for storing voltage equivalent to the video signal, a writing transistor that writes the video signal in the storage capacitor on the basis of the scanning signal and changes to a non-conduction state when the off-potential of the scanning signal is supplied, a driving transistor that outputs electric current corresponding to the voltage equivalent to the video signal written in the storage capacitor, and a light emitting element that emits light according to the electric current output from the driving transistor. | 01-06-2011 |
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 |
20110037786 | Display device, method for correcting luminance degradation, and electronic apparatus - A display device includes a first reference pixel section configured to be driven to emit light at a predetermined luminance, a second reference pixel section configured to be driven to emit light when an amount of luminance degradation is to be detected, and a correcting unit configured to correct luminance degradation of effective pixels that contribute to display on the basis of a detection result of luminances of the first reference pixel section and the second reference pixel section. | 02-17-2011 |
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 |
20110050867 | DISPLAY DEVICE AND CONTROL METHOD - A stereoscopic video display system includes a display device for displaying stereoscopic video, an image pickup element for generating image data, a position determiner for processing the image data received by the image pickup element to determine position information of at least one object identified in the image data, and a plurality of light output sections each having one or more light transmitters. Each light transmitter is configured to output timing signals having a signal strength based on the determined position information. The stereoscopic video display system also includes at least one set of shutter eyeglasses including a light receiving section for receiving timing signals output from at least one of the light transmitters of the light output sections. | 03-03-2011 |
20110069051 | DISPLAY - A display unit including a display region including a plurality of luminescence elements, a non-display region including a plurality of luminescence elements and a photoreception element, a drive unit connected to each of the luminescence elements in the display region, a photoreception drive circuit connected to the plurality of luminescence elements in the non-display region, and a photoreception processing unit which receives a signal output from each of the plurality of luminescence elements in the non-display region and outputs a degradation signal to the drive unit, the drive unit providing a signal to the plurality of luminescence elements in the display region based on the degradation signal. | 03-24-2011 |
20110074753 | Display apparatus - A display apparatus includes a pixel array that has pixel units arranged in a matrix on the basis of a predetermined array pattern, each pixel unit having a light emitting element formed therein and having a structure configured to emit light generated from the light emitting element. In the structure of the pixel unit, a photodetection element which allows a current to flow in response to received light is provided to correspond to an inner area of a light emitting layer which forms the light emitting element. The pixel unit has a light incidence structure configured to allow the light, which is generated from the light emitting element, to be incident to the photodetection element. | 03-31-2011 |
20110074838 | DISPLAY DEVICE - A display device according to the present invention includes pixel units. Each of the pixel units is made up of N consecutive pixels. One of N (N≧3) colors including R (red), G (green) and B (blue) is assigned to each of the N pixels. Each of the N pixels includes a sampling transistor Ms, drive transistor Md, holding capacitor Cs and light-emitting element (organic light-emitting diode OLED). Of the N pixels, a specific color pixel that is susceptible to a dark dot (e.g., B) or that has the highest relative luminosity factor (e.g., G) has more sets of pixel circuit elements including the drive transistor Md, holding capacitor Cs and organic light-emitting diode OLED than other color pixels and has two or more sets thereof. | 03-31-2011 |
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 |
20110096065 | Display apparatus and method for driving the same - A method of driving a display apparatus formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion, the method comprising the steps of: performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to a gate electrode of a driving transistor of Q×N display devices configuring groups of display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period T | 04-28-2011 |
20110102308 | Image display device with imaging unit - An image display unit comprises a display area including pixels, and an imaging unit disposed at its rear side behind the display area. Light transmissive sections are located within the display area and correspond to the pixels. The light transmissive sections are configured to separately receive light incident upon the image display unit, and pass the received light to the imaging unit. | 05-05-2011 |
20110109610 | Display device and electronic apparatus - A display device includes: pixel circuits; a signal electric potential generating unit generating a first signal electric potential used for increasing the number of gray scales of luminance of light emission of the pixel circuits and a second signal electric potential equal to or higher than the first signal electric potential, based on a video signal; and a control signal generating unit generating a control signal used for supplying the first and second signal electric potentials to the pixel circuits. Each of the pixel circuits includes a holding capacitor used for maintaining a signal voltage corresponding to the second signal electric potential, a writing transistor writing the second signal electric potential to the holding capacitor based on the control signal after writing the first signal electric potential, a driving transistor outputting a signal current based on the signal voltage corresponding to mobility of the driving transistor at the first signal electric potential written by the writing transistor, and a light emitting device emitting light in accordance with the signal current. | 05-12-2011 |
20110109664 | Display device, method for driving the same, and electronic unit - A display device includes: a display section including a plurality of pixels each having a light emitting element and a pixel circuit; and a drive circuit performing display drive on the plurality of pixels through selecting each of the plurality of pixels to write a first signal voltage and a second signal voltage in this order into the selected pixel, the first and second signal voltages being provided based on a video signal. The drive circuit varies magnitude of each of the first and second signal voltages in accordance with a gray-scale value of the video signal, thereby performing gray-scale interpolation on a light emission luminance level for each of the light emitting elements. | 05-12-2011 |
20110109813 | DISPLAY DEVICE AND DRIVE METHOD THEREFOR, AND ELECTRONIC UNIT - A display device includes: pixels each including a light-emitting element; scan lines and signal lines; a scan line drive circuit applying a selection pulse to each of the scan lines in succession; and a signal line drive circuit writing video signals to respective selected pixels through switching a gray-scale interpolation voltage, a basic voltage, and a video signal voltage to apply each voltage selected by switching to each of the signal lines. The signal line drive circuit performs gray-scale interpolation on a light emission luminance level for each of the light emitting elements through setting the video signal voltage to a fundamental gray-scale voltage, and through varying the gray-scale interpolation voltage. The scan line drive circuit starts and completes an application of the selection pulse during each of a period of a gray-scale interpolation voltage, a period of a basic voltage and a period of a video signal voltage. | 05-12-2011 |
20110109817 | Display device, method of driving the same, and electronic unit - A display device includes: pixels each including a light emitting element; scan lines, signal lines, and power supply lines; a scan line drive circuit applying a selection pulse to the scan lines in succession; a signal line drive circuit applying a signal pulse to the signal lines through switching a gray-scale interpolation voltage, a basic voltage and a video signal voltage, in this order to perform gray-scale interpolation; and a power supply line drive circuit applying a control pulse to the power supply lines. The scan line drive circuit generates the selection pulse through alternately switching an on-voltage and an off-voltage, and applies the pulse to the scan lines so that application of the on-voltage to the scan line starts in a time period of the gray-scale interpolation voltage and the on-voltage is switched to the off-voltage in a time period of the basic voltage. | 05-12-2011 |
20110115773 | IMAGE DISPLAY AND IMAGE DISPLAY METHOD - An image display includes: a display panel in which a plurality of pixels including first display elements, respectively, are two-dimensionally arranged; a drive section deriving, from a plurality of pieces of still image data and display times of a plurality of still images based on the plurality of pieces of still image data, an accumulated display time of each first display element in each still image data when the plurality of still images are sequentially displayed from one to another, and deriving, from the accumulated display time of each first display element derived in each still image data and degradation characteristic data stored in a memory section, a correction amount of each still image data in each pixel, and further sequentially displaying a plurality of still images based on a plurality of pieces of still image data corrected with use of the obtained correction amount from one to another. | 05-19-2011 |
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 |
20110128276 | Display apparatus and display drive method - A display apparatus includes: a pixel array including pixel circuits arranged in a matrix form, in which each pixel circuit has a light-emitting device, a drive transistor applying a current corresponding to a gate-source voltage to the light-emitting device, a sampling transistor inputting a voltage supplied from a signal line to a gate of the drive transistor, and a storage capacitor connected between the gate and source of the drive transistor so as to store a threshold voltage of the drive transistor and an input video signal voltage; a signal selector that supplies a reference voltage and the video signal voltage to signal lines arranged in columns on the pixel array in horizontal periods corresponding to the number of horizontal lines in one unit when the horizontal lines of the respective pixel circuits of the pixel array are grouped as one unit; and a scanner that applies a pulse to control lines arranged in rows on the pixel array so as to control the sampling transistor of the pixel circuit. | 06-02-2011 |
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 |
20110164010 | Display apparatus, light detection method and electronic apparatus - Disclosed herein is a display apparatus including a plurality of pixel circuits, a displaying driving section, and a light amount information detection section. The pixel circuits are disposed in a matrix at positions at which a signal line and a plurality of scanning lines cross with each other. The displaying driving section applies a signal value to each pixel circuit and drives the scanning lines to cause the pixel circuit to emit light with a luminance according to the signal value to carry out image display. The light amount information detection section detects light amount information. Each pixel circuit includes a light emitting element, a driving transistor, a sampling transistor, and a switching transistor. Each pixel circuit can execute light detection operation of varying the gate potential of the driving transistor in response to a received light amount and outputting the source potential of the driving transistor. | 07-07-2011 |
20110164011 | Display apparatus, light detection method and electronic apparatus - Disclosed herein is a display apparatus, including pixel circuits disposed in a matrix at positions at which signal lines and scanning lines cross each other and individually including a light emitting element; a light emission driving section to apply a signal value to each of the pixel circuits to cause the circuit to emit light of a luminance; and a light detection section provided in each of the pixel circuits and including a sensor-switch serving element which functions by switching thereof between an on state and an off state and functions, in the off state thereof, as a light sensor for detecting light from the light emitting element of the pixel circuit, and a detection signal outputting transistor connected to a light detection line for outputting light detection information corresponding to a variation amount of current of the sensor-switch serving element in the off state to the light detection line. | 07-07-2011 |
20110169802 | Signal processing apparatus, display apparatus, electronic apparatus, signal processing method and program - A signal processing apparatus including a conversion efficiency degradation value calculation section adapted to calculate a conversion efficiency degradation value regarding degradation of a conversion efficiency when driving current supplied to a light emitting element in each of a plurality of pixel circuits is converted into a luminance based on information regarding degradation of the conversion efficiency produced in response to lapse of light emission time of the light emitting element; a current amount degradation value calculation section adapted to calculate a current amount degradation value regarding degradation of the driving current based on information regarding degradation of the driving current produced in response to lapse of the light emission time of the light emitting element; and a correction section adapted to correct a gradation value of an image signal to be inputted to the pixel circuit based on the conversion efficiency degradation value and the current amount degradation value. | 07-14-2011 |
20110169812 | Pixel circuit, display device, driving method of pixel circuit, and driving method of display device - A pixel circuit, disposed at a part where a scanning line and a signal line intersect each other, includes at least an electrooptic element, a drive transistor, a sampling transistor, and a retaining capacitance. The drive transistor has a gate connected to an input node, a source connected to an output node, and a drain connected to a predetermined power supply potential and supplies a driving current to the electrooptic element according to a signal potential retained in the retaining capacitance. The electrooptic element has one terminal connected to the output node and another terminal connected to a predetermined potential. The sampling transistor is connected between the input node and the signal line and operates when selected by the scanning line, samples an input signal from the signal line, and retains the input signal in the retaining capacitance. The retaining capacitance is connected to the input node. The pixel circuit further includes a compensating circuit which detects a decrease in the driving current from a side of the output node and feeds back a result of detection to a side of the input node to compensate for a decrease in the driving current, which decrease is attendant on a secular change of the drive transistor. | 07-14-2011 |
20110175868 | DISPLAY DEVICE, METHOD OF DRIVING THE DISPLAY DEVICE, AND ELECTRONIC UNIT - A display device includes a display section including a plurality of scan lines and a plurality of power lines, being arranged in rows, a plurality of signal lines arranged in columns, and a plurality of pixels arranged in a matrix; and a driver section driving each pixel. The power lines are individually provided for each of units with a plurality of pixel rows as a unit, and the driver section reverses a scan direction of scan lines in the unit between odd and even fields. | 07-21-2011 |
20110181587 | Image display device having imaging device - An image display device having an imaging device, includes: an image display part in which a plurality of pixels including light-emitting devices are arranged; a light transmission region provided in the image display part; an imaging device arranged on a back side of the image display part; a light condensing means for condensing light passing through the light transmission region to the imaging device; and a position detecting means for obtaining position information of a subject based on image information acquired through the imaging device. | 07-28-2011 |
20110181626 | Display device and display driving method - Disclosed herein is a display device including a pixel array configured to include pixel circuits arranged in a matrix having a light emitting element, driving transistor, sampling transistor, and hold capacitor. The display device further includes a signal selector, driving control scanner, and writing scanner. The signal selector alternately carries out supply of a video signal voltage in order from a beginning line to an end line in a unit and supply of a video signal voltage in order from an end line to a beginning line in a unit. The writing scanner outputs the pulse to the writing control lines in such a way that input of a video signal voltage in order from a beginning line to an end line in a unit and input of a video signal voltage in order from an end line to a beginning line in a unit are alternately carried out. | 07-28-2011 |
20110181629 | DISPLAY DEVICE, METHOD OF DRIVING THE DISPLAY DEVICE, AND ELECTRONIC DEVICE - A display device includes: a display section including scan lines, power lines, signal lines, and pixels, each having a light emitting element and a pixel circuit which has a first transistor controlling a current in the light emitting element, and a second transistor writing a voltage on the signal line to the first transistor; and a driver section driving the pixels. Each power line is provided for each unit of pixel rows. The driver section sequentially applies a first pulse signal for inactivating the light emitting element to each of the scan lines in a pixel row unit, and applies one or more second pulse signals for activating the second transistor to at least a scan line corresponding to a pixel row to be inactivated first in the pixel row unit while a non-gray-scale signal is applied to each signal line. | 07-28-2011 |
20110187699 | Pixel circuit, display and driving method thereof - The invention provides a pixel circuit that can cancel the influence of the mobility of a drive transistor. A drive transistor supplies a light-emitting element with an output current dependent upon an input voltage. The light-emitting element emits light with a luminance dependent upon a video signal in response to the output current supplied from the drive transistor. The pixel circuit includes a correction unit that corrects the input voltage held by a capacitive part in order to cancel the dependence of the output current on the carrier mobility. | 08-04-2011 |
20110193843 | 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. | 08-11-2011 |
20110205205 | Pixel circuit, display device, method of driving the display device, and electronic unit - A display device includes: a pixel circuit including a light emitting element, first to third ,transistors, and a capacitive element; and a scan line. The pixel circuit is configured in such a manner that, one of a drain and a source of the first transistor is connected to a gate of the second transistor, the third transistor and the capacitive element are connected in series between a gate of the first transistor and the gate of the second transistor, and variation in scan line voltage is transmitted to the gate of the second transistor via the third transistor and the second capacitive element. | 08-25-2011 |
20110205252 | Display device, driving method of display device, and driving method of display element - Disclosed herein is a driving method of a display device. The display device includes display elements arranged in a form of a two-dimensional matrix and each have a driving circuit and a light emitting section. The driving circuit includes a driving transistor having a gate electrode and source/drain regions and a capacitance section, and a current flowing through the light emitting section via the source/drain regions of the driving transistor. The driving method includes the step of performing a first writing process, a second writing process, and then setting the gate electrode of the driving transistor in a floating state. A current corresponding to a value of a voltage retained in the capacitance section for retaining a voltage of the gate electrode of the driving transistor with respect to a source region of the driving transistor flows through the light emitting section, so that the light emitting section emits light. | 08-25-2011 |
20110216054 | DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - In a display apparatus, as shown in FIG. | 09-08-2011 |
20110227897 | Display device, driving method thereof, and electronic apparatus - A display device comprises a pixel array unit including a plurality of pixels, and power supply lines and a power supply scanner for supplying a power supply voltage switching between first and second potentials to each of the power supply lines, wherein each of the pixels includes a light emitting element, a sampling transistor, a driver transistor, and a holding capacitor. The sampling transistor samples a signal potential to be held in the holding capacitor, the driver transistor receives a supply of a current from the power supply scanner through the power supply line at a first potential and flows a drive current to the light emitting element in accordance with the held signal potential, and the power supply scanner changes the power supply line from the first potential to the second potential before the sampling transistors samples the signal potential. | 09-22-2011 |
20110234925 | Display device and electronic device - A display device includes: a display unit having a plurality of pixels each including a light emitting element, a drive transistor and a correction transistor, a scan line, a signal line, a power supply line and a gate line connected to the pixels; a scan line drive circuit applying a selection pulse to the scan line; and a signal line drive circuit writing a video signal to a pixel selected by the scan line drive circuit by applying a video signal voltage to the signal line. The drive transistor and the correction transistor are connected to each other in series on a path between the power supply line and the light emitting element in each of the pixels. Gate voltage for correction to be applied to the gate of the correction transistor via the gate line is set individually in each of unit regions in the display unit. | 09-29-2011 |
20110241729 | Inverter circuit and display - An inverter circuit includes: first to third transistors; and first and second capacity elements. The first transistor makes/breaks connection between an output terminal and a first voltage line in response to potential difference between an input terminal and the first voltage line or its correspondent. The second transistor makes/breaks connection between a second voltage line and the output terminal in response to potential difference between a gate of the second transistor and the output terminal or its correspondent. The third transistor makes/breaks connection between a gate of the second transistor and a third voltage line in response to potential difference between the input terminal and the third voltage line or its correspondent. The first and second capacity elements are inserted in series between the input terminal and the gate of the second transistor. A junction between the first and second capacity elements is connected to the output terminal. | 10-06-2011 |
20110241730 | Inverter circuit and display - An inverter circuit includes: first to third transistors; and first and second capacity elements. The first transistor makes/breaks connection between an output terminal and a first voltage line in response to potential difference between an input terminal and the first voltage line or its correspondent. The second transistor makes/breaks connection between a second voltage line and the output terminal in response to potential difference between a gate of the second transistor and the output terminal or its correspondent. The third transistor makes/breaks connection between a gate of the second transistor and a third voltage line in response to potential difference between the input terminal and the third voltage line or its correspondent. The first and second capacity elements are inserted in series between the input terminal and the gate of the second transistor. A junction between the first and second capacity elements is connected to the output terminal. | 10-06-2011 |
20110242069 | Inverter circuit and display device - An inverter circuit including: first to third transistors; first and second switches; and a first capacitive element. The first and second transistors are connected in series between a first voltage line and a second voltage line. The third transistor is connected between the second voltage line and a gate of the second transistor. The first and second switches are connected in series between a voltage supply line and a gate of the third transistor, and are turned on/off alternately to prevent the first and second switches from simultaneously turning ON. One end of the first capacitive element is connected to a node between the first and second switches. Off-state of the first transistor allows a predetermined fixed voltage to be supplied from the voltage supply line to the gate of the second transistor, via the first switch, the one end of the first capacitive element and the second switch. | 10-06-2011 |
20110242079 | Inverter circuit and display device - An inverter circuit includes: first and second transistors connected between first and second voltage lines; a fifth transistor having a drain connected to a fifth voltage line and a source connected to a gate of the second transistor; a first capacitive element between a gate and the source of the fifth transistor; a second capacitive element between a first input terminal and the source of the fifth transistor; and the third capacitive element between a second input terminal and the source of the fifth transistor. A first pulse signal into the first input terminal has a phase advanced more than a second pulse signal into the second input terminal. The second pulse signal is switched while the gate of the fifth transistor and the first voltage line are connected. The first pulse signal is switched while the gate of the fifth transistor and the first voltage line are unconnected. | 10-06-2011 |
20110242080 | Inverter circuit and display - An inverter circuit includes: a first transistor and a second transistor; a first switch and a second switch; and a first capacity element, in which the first and second transistors are connected in series between a first voltage line and a second voltage line, the first and second switches are connected in series between a supply voltage line and a gate of the second transistor, and are alternately turned on and off so as not to be turned on simultaneously, an end of the first capacity element is connected between the first switch and the second switch, and off-state of the first transistor allows a predetermined fixed voltage to be supplied from the supply voltage line to the gate of the second transistor through the first switch, the end of the first capacity element and the second switch. | 10-06-2011 |
20110242143 | Signal processing apparatus, display apparatus, electronic apparatus, signal processing method and program - Disclosed herein is a signal processing apparatus, including: a luminance degradation information production section adapted to produce luminance degradation information regarding degradation of a luminance in accordance with a temperature condition upon emission; a luminance degradation value calculation section adapted to calculate a luminance degradation value regarding degradation of the luminance for each pixel circuit; and a correction section adapted to correct the gradation value of an image signal to be inputted to the pixel circuit based on the luminance degradation value. | 10-06-2011 |
20110273491 | 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. | 11-10-2011 |
20110279439 | Display apparatus, method of driving a display, and electronic device - In a display apparatus including a switching transistor, 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. | 11-17-2011 |
20110285692 | 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. | 11-24-2011 |
20110316836 | Display device and display driving method therefor - Disclosed herein is a display device, including: a pixel array in which pixel circuits each having a light emitting element, a driving transistor for applying a current corresponding to a gate-to-source voltage to the light emitting element connected to a source side by applying a drive voltage across a drain and a source, a sampling transistor for inputting a signal line voltage to a gate of the driving transistor by being caused to conduct, and a sustaining capacitor connected between the gate and the source of the driving transistor for sustaining a video signal voltage inputted thereto are disposed in a matrix; a signal selector; a drive control scanner; and a write scanner. | 12-29-2011 |
20120001948 | Display device, pixel circuit and display drive method thereof - A display device includes: a pixel array in which pixel circuits each having a light emitting device and a drive transistor which applies current corresponding to an inputted video signal voltage to the light emitting device are arranged in a matrix state; a signal selector supplying at least the video signal voltage and a reference voltage as signal line voltages to respective signal lines arranged in columns on the pixel array; a first write scanner outputting a first scanning pulse with respect to respective first write control lines arranged in rows on the pixel array, which is used for controlling input of the signal line voltages to the pixel circuits; and a second write scanner outputting a second scanning pulse with respect to respective second write control lines arranged in columns on the pixel array, which is used for controlling input of the signal line voltages to the pixel circuits with the first scanning pulse. | 01-05-2012 |
20120013590 | Organic electroluminescent display device, method of manufacturing organic electroluminescent display device, and electronic apparatus - Disclosed is an organic electroluminescent (EL) display device including a pixel array section in which pixels having organic EL elements are arranged; and a drive circuit section provided in a circumferential portion of the pixel array section on the same substrate as that of the pixel array section, the drive circuit section having a circuit configuration including a capacitive element, wherein the capacitive element uses, as a dielectric member, an organic layer formed in the circumferential portion of the pixel array section through the same process as that of the organic layer of the organic EL element. | 01-19-2012 |
20120038620 | DISPLAY DEVICE, METHOD OF DRIVING SAME, AND ELECTRONIC DEVICE - A display device is disclosed. The display device includes: a pixel array portion and a driver portion for driving the pixel array portion. The pixel array portion has rows of scanning lines, columns of signal lines, pixels arranged in rows and columns at intersections of the scanning lines and the signal lines, and power lines disposed in a corresponding manner to the rows of the pixels. The driver portion includes a main scanner, a power-supply scanner, and a signal selector. Each of the pixels includes light-emitting devices, a sampling transistor, a driving transistor, a retaining capacitor. | 02-16-2012 |
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 |
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 |
20120062620 | 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. | 03-15-2012 |
20120068992 | DRIVING METHOD FOR ORGANIC ELECTROLUMINESCENCE LIGHT EMITTING SECTION - A driving method for an organic EL light emitting section achieves optimization of mobility correction for a transistor of a driving circuit in response to luminance. In a driving circuit formed from a driving transistor, an image signal writing transistor and a capacitor section having a pair of electrodes, a driving method carries out a pre-process, a threshold voltage cancellation process and a writing process. A variable correction voltage which relies upon the image signal voltage is applied to a first node of the capacitor and a voltage which is higher than a potential of the second node of the capacitor in the threshold voltage cancellation process is applied to the drain electrode of the driving transistor, between the threshold voltage cancellation process and the writing process, to raise the potential of the second node in response to a characteristic of the driving transistor. | 03-22-2012 |
20120081417 | DISPLAY APPARATUS AND DRIVING METHOD FOR DISPLAY APPARATUS - The present invention provides a display apparatus, including: a display section including a plurality of pixels disposed in a matrix and a plurality of signal lines and a plurality of scanning lines; and a horizontal driving circuit and a vertical driving circuit configured to drive the signal lines and the scanning lines of the display section to display an image on the display section; each of the pixels including a light emitting device; a signal level storage capacitor, a writing transistor, and a driving transistor. | 04-05-2012 |
20120092391 | SELF-LUMINOUS DISPLAY PANEL DRIVING METHOD, SELF-LUMINOUS DISPLAY PANEL AND ELECTRONIC APPARATUS - A self-luminous display panel driving method for driving a self-luminous display panel of the active matrix driving type, includes the step of executing threshold value correction operation for a driving transistor divisionally in a plurality of periods within at least one of which, after a point of time of an end of a preceding correction period till a point of time of a start of a succeeding correction period, a potential to be applied to the drain electrode of the driving transistor is controlled to an intermediate potential between a first potential for lighting driving of the driving transistor and a second potential for initialization applied within a preparation period of the first one of the correction periods. | 04-19-2012 |
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 |
20120120036 | DISPLAY APPARATUS, METHOD OF DRIVING A DISPLAY, AND ELECTRONIC DEVICE - In a display apparatus including a switching transistor, 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. | 05-17-2012 |
20120133633 | DISPLAY DEVICE, ELECTRONIC DEVICE, AND METHOD OF DRIVING DISPLAY DEVICE - A display device is provided having improved reliability compared with the related art. The display device includes, for each pixel: a photo-emission element and a first MOS transistor connected in series between a first power source line and a second power source line; a capacitor connected to be inserted between a gate and a source of the first MOS transistor; and a second MOS transistor connected to be inserted between a signal line to be applied with a image signal voltage and the gate of the first MOS transistor, the second MOS transistor being controlled by a scan signal to change between ON-state and OFF-state, wherein ON-period of the first transistor is established within a period in which the photo-emission element is maintained to an extinction state and the signal line is applied with a voltage having a fixed level independent from the image signal voltage. | 05-31-2012 |
20120133637 | 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. | 05-31-2012 |
20120146036 | Device using oxide semiconductor, display device, and electronic apparatus - Disclosed herein is a device using an oxide semiconductor, the device including a circuit part configured to include a thin film transistor using the oxide semiconductor as a channel material, wherein the circuit part has a lower interconnect, an upper interconnect, and an interlayer insulating film, the interlayer insulating film includes an oxide semiconductor layer and a channel protective layer, and the channel protective layer is interposed between an outer circumferential surface of a rising part of the oxide semiconductor layer corresponding to thickness of the lower interconnect and the upper interconnect. | 06-14-2012 |
20120146886 | DISPLAY APPARATUS AND ELECTRONIC APPARATUS - Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate. | 06-14-2012 |
20120154352 | DISPLAY APPARATUS - A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when the display panel displays an image by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes an operating time conversion factor holder, a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator. | 06-21-2012 |
20120154453 | DISPLAY APPARATUS AND DISPLAY APPARATUS DRIVING METHOD - A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator. | 06-21-2012 |
20120154682 | DISPLAY APPARATUS AND DISPLAY APPARATUS DRIVING METHOD - A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator. | 06-21-2012 |
20120154683 | Display apparatus and display apparatus driving method - A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a black-level shift amount holder, and a video signal generator. | 06-21-2012 |
20120162164 | PIXEL CIRCUIT AND DISPLAY DEVICE - A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain is connected to a power source potential, a capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts. | 06-28-2012 |
20120162188 | SIGNAL PROCESSING DEVICE AND DISPLAY APPARATUS - A signal processing device includes: a switching element for driving supplying a driving current supplied from a power supply section to a light emitting portion; and a cutoff element cutting off the switching element for driving according to a cutoff signal supplied before a threshold voltage adjusting signal for adjusting a threshold voltage of the switching element for driving is supplied to the switching element for driving from a signal line for supplying the threshold voltage adjusting signal. | 06-28-2012 |
20120162280 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A signal processing device measures an actual luminance of a pixel circuit having a light-emitting device every update period by setting levels of gradation values. A conversion efficiency value is calculated for the light-emitting device to convert a driving current supplied in accordance with a gradation value into a luminance based on the luminance value and a gradation value corresponding to the luminance value. A driving current corresponding to the luminance value is calculated, and a comparison is made of the relationship between the driving current and a gradation value corresponding to the luminance value with the relationship between a driving current and a gradation value when the pixel circuit is in a correction reference state. This is used to calculate a current amount deterioration value of a driving current of the pixel circuit, and generates current amount deterioration characteristic information of the pixel circuit. | 06-28-2012 |
20120162284 | Signal processing device, signal processing method, display device, and electronic apparatus - A signal processing device includes a measuring unit, a conversion efficiency calculation unit, and a conversion efficient deterioration value calculation unit. The measuring unit outputs levels of driving signals having different magnitudes every update period to drive a pixel circuit and measures the luminance of the pixel circuit when driven accordingly. The conversion efficiency calculation unit calculates a conversion efficiency value of the pixel circuit based on the relationship between driving current value and luminance value. The conversion efficiency deterioration value calculation unit compares the conversion efficiency value of the pixel circuit with a conversion efficiency value of a correction reference state, calculates a conversion efficiency deterioration value corresponding to an elapsed time from the correction reference state, and updates luminance deterioration information with the conversion efficiency deterioration value. | 06-28-2012 |
20120162285 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A signal processing device measures an actual luminance of a light-emitting device by setting levels of gradation values indicating the degree of light emission to a pixel circuit having the light-emitting device to generate measurement information. The device also calculates gradation deterioration characteristics based on the measurement information and the relationship between a gradation value and a luminance value when the pixel circuit is in a correction reference state. A deterioration value calculation calculates a conversion efficiency deterioration value of conversion efficiency for the light-emitting device to convert a driving current supplied for a gradation value into a luminance to generate conversion efficiency deterioration characteristic information. Finally, the device calculates current amount deterioration value that calculates a current amount deterioration value regarding deterioration of a driving current of the pixel circuit based on the gradation deterioration characteristic to generate current amount deterioration characteristic information of the prescribed pixel circuit. | 06-28-2012 |
20120169794 | 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 | 07-05-2012 |
20120175647 | 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. | 07-12-2012 |
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 |
20120176360 | DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - A display device includes: a pixel array section; and a drive section, the pixel array section including scan lines, signal lines, pixels, and power lines, the drive section including a main scanner, a drive scanner, and a signal selector, wherein each of the pixels includes a light-emitting element, sampling transistor, drive transistor, and holding capacitor. | 07-12-2012 |
20120182281 | 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 T | 07-19-2012 |
20120206324 | 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. | 08-16-2012 |
20120218251 | 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. | 08-30-2012 |
20120223925 | PHOTODETECTION CIRCUIT, PHOTODETECTION METHOD, DISPLAY PANEL, AND DISPLAY - There is provided a photodetection circuit and a photodetection method capable of obtaining high detection accuracy while reducing burn-in, and a display panel and a display including the above-described photodetection circuit. A photodetection circuit detecting incident light includes: a transistor provided between a fixed power supply line and a photodetection line; a photodiode provided between a gate of the transistor and a control line, and having a cathode directed toward the control line; a first capacitor connected, between the gate of the transistor and the control line, in parallel with the photodiode; and a second capacitor provided between the gate of the transistor and the fixed power supply line. | 09-06-2012 |
20120223930 | INVERTER CIRCUIT AND DISPLAY UNIT - An inverter circuit includes: a first transistor, a second transistor, a third transistor, a fourth transistor, and a fifth transistor; an input terminal and an output terminal; and a capacitor. The capacitor is inserted between a gate of the second transistor and one of a source and a drain of the second transistor in which the one is located on an output terminal side. | 09-06-2012 |
20120223978 | PIXEL CIRCUIT, DISPLAY PANEL, DISPLAY DEVICE AND ELECTRONIC UNIT - There is provided a pixel circuit capable of obtaining high-luminance while suppressing power consumption. Further, there are provided a display panel having the pixel circuit, and a display device including the display panel. Still further, there is provided an electronic unit including the display device. The pixel circuit includes a first transistor driving a light-emitting element, a plurality of holding capacitors connected in series between a gate and a source of the first transistor, a second transistor provided between a first signal line and the gate of the first transistor, and a third transistor provided between a second signal line and one of junctions of the holding capacitors. | 09-06-2012 |
20120249517 | METHOD OF DRIVING ORGANIC ELECTROLUMINESCENCE EMISSION PORTION - A pixel circuit and driving method are disclosed, wherein the pixel circuit comprises a first transistor, a second transistor, and a capacitor. The first transistor is connected between a power source and a light emission portion, and the second transistor is connected to a data line. The capacitor is initialized according to a potential, and a video signal is applied from the data line to the capacitor through the second transistor. For driving, an initialization voltage is applied to the data line and the video signal is supplied to the data line, with the second transistor being turned ON prior to applying the initialization voltage to the data line. | 10-04-2012 |
20120286275 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device has pixels including electro-optical elements and transistors. Each pixel has a metal layer of a gate electrode of the transistor, a semiconductor layer in which a source region and a drain region of the transistor are formed, and a capacitance element formed between the same metal layer as the metal layer of the gate electrode and the semiconductor layer upon application of a voltage to the metal layer. | 11-15-2012 |
20120287092 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes a control line through which a drive signal output from a driver is transmitted and transistors arranged along a direction in which the control line extends and driven with the drive signal transmitted through the control line. Parasitic capacitances between gates and sources/drains of the transistors are varied in accordance with distances thereof from the driver in the direction in which the control line extends. | 11-15-2012 |
20120287102 | PIXEL CIRCUIT, DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR DRIVING PIXEL CIRCUIT - A pixel circuit includes a display part, hold capacitance, a write transistor that writes a drive voltage corresponding to a video signal to the hold capacitance, and a drive transistor that drives the display part based on the drive voltage written to the hold capacitance. The pixel circuit is so configured as to be capable of controlling opening and closing of a current path of the display part in association with processing of writing the drive voltage corresponding to the video signal to the hold capacitance. | 11-15-2012 |
20120293397 | BOOTSTRAP CIRCUIT, INVERTER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - Disclosed herein is a bootstrap circuit including: a transistor; and a capacitor connected between a gate electrode of the transistor, and one of source and drain regions of the transistor, the bootstrap circuit serving to carry out a bootstrap operation in which an electric potential at the gate electrode is changed depending on a change in an electric potential at the one of the source and drain regions, in which the transistor has a structure in which the source region and the drain region have a structure of being asymmetric with respect to a line passing through a center of the gate electrode. | 11-22-2012 |
20120313922 | DISPLAY DEVICE, PIXEL CIRCUIT, ELECTRONIC APPARATUS, AND METHOD OF DRIVING DISPLAY DEVICE - A display device includes a display portion, a hold capacitor, a write transistor writing a drive voltage corresponding to a video signal to the hold capacitor, a drive transistor driving the display portion in accordance with the drive voltage written to the hold capacitor, and a pulse width adjusting portion adjusting a width of a pulse signal causing a drive pulse used to drive at least one of the write transistor and the drive transistor so as to correspond to an environmental change. | 12-13-2012 |
20120313923 | PIXEL CIRCUIT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND PIXEL CIRCUIT DRIVING METHOD - Disclosed herein is a pixel circuit including: a light emitting element; a storage capacitor; a writing transistor for writing a driving voltage corresponding to a video signal to the storage capacitor; and a driving transistor for driving the light emitting element on a basis of the driving voltage written to the storage capacitor, wherein a characteristic of the writing transistor is controllable in such a manner as to be operatively associated with a process of writing the driving voltage corresponding to the video signal to the storage capacitor. | 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 |
20120320029 | IMAGE DISPLAY DEVICE - An image display device and method of driving an image display device with alternative repeating of an emission period during which the light emitting element is made to emit light and a non-emission period during which light emission of the light emitting element is stopped. The terminal voltage of a storage capacitor is set to the voltage of a signal line, whereby light emission luminance of the light emitting element in a next emission period is set. | 12-20-2012 |
20120327058 | PIXEL CIRCUIT, DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING PIXEL CIRCUIT - Disclosed herein is a pixel circuit, including: a display portion; a drive transistor driving the display portion; and a characteristics controlling portion configured to control characteristics of the drive transistor. | 12-27-2012 |
20130002635 | 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. | 01-03-2013 |
20130002642 | DISPLAY DEVICE WITH POWER SOURCE SUPPLY SCAN CIRCUITS AND DRIVING METHOD THEREOF - A display device includes a pixel array unit having pixels disposed in a matrix shape, each pixel including an electro-optical element, a write transistor for sampling and writing an input signal voltage, a holding capacitor for holding a signal voltage written by the write transistor, and a driver transistor for driving the electro-optical element in response to the signal voltage held in the holding capacitor. The display device further includes a scan circuit for selectively scanning each pixel in the pixel array unit at a row unit basis, and a plurality of power source supply scan circuits for selectively supplying a first potential and a second potential lower than the first potential to power supply line wired per each pixel row of the pixel array unit to supply current to the driver transistors, synchronously with scanning by the scan circuit. | 01-03-2013 |
20130009854 | PIXEL CIRCUIT, DISPLAY DEVICE, DRIVING METHOD OF PIXEL CIRCUIT, AND DRIVING METHOD OF DISPLAY DEVICE - A display device including pixel circuits arranged in a form of a matrix, with the pixel circuits respectively including an electro-optical element, a drive transistor, a sampling transistor, and a capacitive element. The sampling transistor samples a signal from the signal line in the capacitive element. The drive transistor and the electro-optical element are arranged in series to form a current path between a power supply line and a ground line. The drive transistor is configured to control a driving current through the current path according to a signal potential stored in the capacitive element. Compensation for driving current dependence on a characteristic of the drive transistor is provided, with such compensation being based upon a current through the current path occurring before a light emission period. | 01-10-2013 |
20130009933 | PIXEL CIRCUIT, DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING PIXEL CIRCUIT - A pixel circuit including: an elelectrooptic element; a hold capacitor; a write transistor writing a drive voltage corresponding to a video signal supplied to one of main electrode terminals thereof to the hold capacitor; and a drive transistor driving the electrooptic element in accordance with the drive voltage written to the hold capacitor. A pixel circuit is adapted such that it can suppress turn ON of the electrooptic element during a first processing in which a current is supplied to the hold capacitor through the drive transistor while the drive voltage corresponding to the video signal is written to the hold capacitor through the write transistor. | 01-10-2013 |
20130027369 | 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. | 01-31-2013 |
20130038593 | PIXEL CIRCUIT, DISPLAY DEVICE, DRIVING METHOD OF PIXEL CIRCUIT, AND DRIVING METHOD OF DISPLAY DEVICE - A pixel circuit includes a compensating circuit that detects a decrease in the driving current from an output node side of a drive transistor and feeds back detection results to an input node side of the drive transistor to compensate for a decrease in the driving current, which decrease is attendant on a secular change of the drive transistor. | 02-14-2013 |
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 |
20130057535 | 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. | 03-07-2013 |
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 |
20130082906 | PIXEL CIRCUIT, PIXEL CIRCUIT DRIVING METHOD, DISPLAY APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is a pixel circuit including: a light-emitting device; a constant current drive circuit configured to include a first transistor as a constant current source for supplying a predetermined current to the light-emitting device; and a switching circuit configured to include a second transistor for opening/closing electrical connection between a gate of the first transistor and a predetermined potential and connect the gate of the first transistor to the potential via the second transistor, thereby turning off the first transistor. | 04-04-2013 |
20130083000 | PIXEL CIRCUIT, PIXEL CIRCUIT DRIVING METHOD, DISPLAY APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is a pixel circuit including: a light-emitting device; a constant current drive circuit configured to include a first transistor as a constant current source for supplying a predetermined current to the light-emitting device; a second transistor configured to open/close electrical connection between the first transistor and the light-emitting device; and a switching circuit configured to switch between an on state and an off state of the second transistor by controlling a gate voltage of the second transistor. | 04-04-2013 |
20130099222 | DISPLAY, METHOD FOR DRIVING DISPLAY, AND ELECTRONIC APPARATUS - Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix and each have an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically. | 04-25-2013 |
20130100104 | DISPLAY, METHOD FOR DRIVING DISPLAY, AND ELECTRONIC APPARATUS - Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix and each have an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically. | 04-25-2013 |
20130113692 | DISPLAY AND METHOD FOR MANUFACTURING DISPLAY - A display includes a pixel array part with pixels that each have at least one transistor whose conduction state is controlled by a drive signal input to a control terminal, and a scanner including a plurality of buffers that are formed of transistors. The buffers correspond to a pixel arrangement and output a drive signal to the control terminals of the transistors of the pixels. The transistors of the pixels and the transistors of the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction and has a predetermined wavelength. The transistors in the buffers are formed in such a way that the channel length direction of the transistors is set parallel to the scan direction of the laser light. | 05-09-2013 |
20130120339 | BUFFER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE, AND ELECTRONIC EQUIPMENT - A buffer circuit includes a first transistor circuit having a first conductivity type transistor, a second transistor circuit having a second conductivity type transistors, in which the first and second transistor circuits are serially connected between a first fixed power supply and a second fixed power supply, and input terminals and output terminals of each of the first and second transistor circuits are connected in common respectively, in which at least one transistor circuit of the first transistor circuit and the second transistor circuit is a double gate transistor, and in which wherein a switch element, when any one transistor circuit of the first and the second transistor circuits is in an operating state, is included to supply a voltage of a third fixed power supply to a common connection node of the double gate transistor of the other transistor circuit. | 05-16-2013 |
20130120347 | LEVEL SHIFTER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - A level shifter circuit, wherein a first and a second transistor circuit are connected serially, a third and a fourth transistor circuit are connected serially; a first input voltage is applied to the second transistor circuit and a second input voltage is applied to the fourth transistor circuit; an input terminal of the first transistor circuit is connected to an output terminal of the third and the fourth transistor circuits, and an input terminal of the third transistor circuit is connected to an output terminal of the first and the second transistor circuits; two transistor circuits of at least one side of two transistor circuits of a first fixed power source side and two transistor circuits of a second fixed power source side are configured of double gate transistors; and the level shifter circuit has a switch element for applying a voltage to a common connection node. | 05-16-2013 |
20130120348 | DRIVING METHOD FOR ORGANIC ELECTROLUMINESCENCE LIGHT EMITTING SECTION - A driving method for an organic EL light emitting section is provided which achieves optimization of a mobility correction process for a transistor of a driving circuit in response to luminance. The light emitting section may include a driving circuit with a driving transistor, an image signal writing transistor and a capacitor section having a pair of electrodes (corresponding to a first node ND | 05-16-2013 |
20130127363 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes an anode electrode provided for each pixel, an opening insulation film which covers the periphery of the anode electrode and which defines an pixel opening, and a storage capacitor disposed below the anode electrode through a planarizing insulation film, having a function to store charge for driving a pixel, and including capacitor electrodes wider than the pixel opening. | 05-23-2013 |
20130127370 | EL DISPLAY PANEL MODULE, EL DISPLAY PANEL, INTEGRATED CIRCUIT DEVICE, ELECTRONIC APPARATUS AND DRIVING CONTROLLING METHOD - Disclosed herein is an EL display panel module, including: a pixel array section including a panel serving as a substrate, and a plurality of pixels disposed in a matrix on the panel and each including a pixel circuit, and a light emitting region; and a driving circuit for driving the pixel circuits such that a threshold value correction operation is carried out commonly for plural ones of the pixel circuits which are connected to each signal line and writing of a signal potential corresponding to a gradation value is executed time-sequentially for the individual pixel circuits, the driving circuit applying a reset potential lower than a reference potential for the threshold value correction to the plural ones of the pixel circuits before first writing of the signal potential after the threshold value correction operation is completed; the pixel array section and the driving circuit being mounted on the same substrate. | 05-23-2013 |
20130127373 | DISPLAY DEVICE - A display device including a pixel array having a plurality of pixels arranged in a matrix form, each of the pixels including a sampling transistor configured to sample a data potential from a video signal line which is insulated from and intersects a control line in response to the change in potential of the control line, and a light-emitting element configured to emit light at the brightness commensurate with the magnitude of the post-sampling data potential. | 05-23-2013 |
20130127802 | DISPLAY APPARATUS, METHOD OF DRIVING A DISPLAY, AND ELECTRONIC DEVICE - In a display apparatus including a switching transistor, 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. | 05-23-2013 |
20130127819 | DISPLAY DEVICE, METHOD OF LAYING OUT WIRING IN DISPLAY DEVICE, AND ELECTRONIC DEVICE - A display device includes: a pixel array section having pixels arranged in a form of a matrix on a display panel; a first terminal group disposed on the display panel so as to correspond to each control line of a first control line group arranged in each pixel row of the pixel array section; a first wiring group for electrically connecting each terminal of the first terminal group to each control line of the first control line group; a second terminal group disposed on the display panel for a second control line group arranged in each pixel row of the pixel array section with a plurality of control lines as a unit; and a second wiring group for electrically connecting each terminal of the second terminal group to each control line of the second control line group through parts between the terminals of the first terminal group. | 05-23-2013 |
20130135280 | DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC APPARATUS - A display device includes pixel array unit and a driver unit. A sampling transistor samples a signal potential to hold the signal potential in a holding capacitor. A driver transistor flows a drive current to a light emitting element in accordance with the signal potential held. A main scanner in the driver unit outputs the control signal having a shorter pulse width than the time period to the scan line to make the sampling transistor conductive during a time period while the signal line is at the signal potential, thereby adding the signal potential a correction for a mobility of the driver transistor when the signal potential is held in the holding capacitor. | 05-30-2013 |
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 |
20130147695 | DISPLAY, METHOD FOR DRIVING DISPLAY, ELECTRONIC APPARATUS - Disclosed herein is a display including, 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. | 06-13-2013 |
20130153876 | DISPLAY DEVICE, METHOD OF LAYING OUT LIGHT EMITTING ELEMENTS, AND ELECTRONIC DEVICE - Disclosed herein is a display device in which light emitting elements of a plurality of colors including a light emitting element emitting blue light are formed in each pixel on a substrate on which a transistor is formed for each sub-pixel, and a plurality of pixels formed with sub-pixels of the plurality of colors as a unit are arranged in a form of a matrix, wherein relative positional relation between transistors of sub-pixels of respective light emission colors including blue light and a light emitting section of a light emitting element emitting the blue light is laid out such that distances between the transistors of the sub-pixels of the respective light emission colors including the blue light and the light emitting section of the light emitting element emitting the blue light are equal to each other for the respective colors. | 06-20-2013 |
20130176324 | DISPLAY DEVICE, ELECTRONIC APPARATUS, DISPLAYING METHOD, AND PROGRAM - Disclosed herein is a display device including: a sampling block sampling image data continuously inputted thereto at predetermined intervals; a gradation value/deterioration amount converting block converting a gradation value of an image based on the image data sampled in the sampling block into a deterioration amount; a deterioration amount storing block calculating and accumulating a difference in deterioration amount between a correction object pixel and a reference pixel by using the deterioration amount obtained through the conversion in the gradation value/deterioration amount converting block; a correction amount calculating block calculating a correction amount required for resolving the deterioration amount difference stored in the deterioration amount storing block based on an estimated deterioration amount within a correction period of time; and a deterioration amount difference correcting block correcting the gradation value of the corresponding pixel with the correction amount thus calculated. | 07-11-2013 |
20130249878 | DISPLAY APPARATUS AND ELECTRONIC APPARATUS - Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel. | 09-26-2013 |
20130249888 | METHOD FOR DRIVING DISPLAY ELEMENT AND METHOD FOR DRIVING DISPLAY DEVICE - Disclosed herein is a method for driving a display element including a current-driven light emitting part and a drive circuit, the drive circuit including a write transistor, a drive transistor, and a capacitive part, the method including the steps of: executing threshold voltage cancel processing of changing potential of the second node toward potential obtained by subtracting threshold voltage of the drive transistor from potential of the first node in a state in which the potential of the first node is kept; and executing write processing of applying a video signal from the data line to the first node via the write transistor turned to an on-state by a scan signal from the scan line. | 09-26-2013 |
20130249962 | DISPLAY APPARATUS, DISPLAY DATA PROCESSING DEVICE, AND DISPLAY DATA PROCESSING METHOD - A display apparatus includes: an edge processing section extracting an edge component of a display data signal; a display data signal processing section changing the display data signal according to a level conversion signal and adding the edge component thereto; a level conversion signal generating section changing the level conversion signal according to the display data signal and a signal output from the display data signal processing section; and a display section performing a display operation according to the signal output from the display data processing section. | 09-26-2013 |
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 |
20130271435 | PIXEL CIRCUIT, ACTIVE MATRIX APPARATUS AND DISPLAY APPARATUS - A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. An input signal is sampled from a signal line so as to be held in a holding capacitor. The threshold voltage of the drive transistor is imparted to the holding capacitor in order to cancel an influence of the threshold voltage. | 10-17-2013 |
20130278573 | IMAGE DISPLAY APPARATUS - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 10-24-2013 |
20130278646 | IMAGE DISPLAY DEVICE HAVING IMAGING DEVICE - An image display device having an imaging device, includes: an image display part in which a plurality of pixels including light-emitting devices are arranged; a light transmission region provided in the image display part; an imaging device arranged on a back side of the image display part; a light condensing means for condensing light passing through the light transmission region to the imaging device; and a position detecting means for obtaining position information of a subject based on image information acquired through the imaging device. | 10-24-2013 |
20130278648 | DISPLAY AND METHOD FOR MANUFACTURING DISPLAY - A display includes a pixel array part with pixels that each have at least one transistor whose conduction state is controlled by a drive signal input to a control terminal, and a scanner including a plurality of buffers that are formed of transistors. The buffers correspond to a pixel arrangement and output a drive signal to the control terminals of the transistors of the pixels. The transistors of the pixels and the transistors of the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction and has a predetermined wavelength. The transistors in the buffers are formed in such a way that the channel length direction of the transistors is set parallel to the scan direction of the laser light. | 10-24-2013 |
20130293459 | IMAGE DISPLAY DEVICE WITH IMAGING UNIT - An image display unit comprises a display area including pixels, and an imaging unit disposed at its rear side behind the display area. Light transmissive sections are located within the display area and correspond to the pixels. The light transmissive sections are configured to separately receive light incident upon the image display unit, and pass the received light to the imaging unit. | 11-07-2013 |
20130314306 | 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. | 11-28-2013 |
20130320847 | DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC APPARATUS - A display device including a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal. | 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 |
20130321383 | 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 |
20130328752 | DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC APPARATUS - A display device comprises a pixel array unit including a plurality of pixels, and power supply lines and a power supply scanner for supplying a power supply voltage switching between first and second potentials to each of the power supply lines, wherein each of the pixels includes a light emitting element, a sampling transistor, a driver transistor, and a holding capacitor. The sampling transistor samples a signal potential to be held in the holding capacitor, the driver transistor receives a supply of a current from the power supply scanner through the power supply line at a first potential and flows a drive current to the light emitting element in accordance with the held signal potential, and the power supply scanner changes the power supply line from the first potential to the second potential before the sampling transistors samples the signal potential. | 12-12-2013 |
20130328951 | 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. | 12-12-2013 |
20140028642 | DISPLAY UNIT - A display unit with which diffraction reflection is able to be decreased is provided. The display unit includes a display section having an organic EL device and a pixel circuit for every pixel. The pixel circuit has a first transistor for writing a video signal and a second transistor for driving the organic EL device based on the video signal written by the first transistor. The second transistor has a gate, a source and a drain. The organic EL device has an anode, an organic layer, and a cathode. An upper face of the source or the drain is formed at least in a region opposed to the anode or the cathode. | 01-30-2014 |
20140028737 | DISPLAY DEVICE, ELECTRONIC DEVICE, AND METHOD OF DRIVING DISPLAY DEVICE - A display device is provided having improved reliability compared with the related art. The display device includes, for each pixel: a photo-emission element and a first MOS transistor connected in series between a first power source line and a second power source line; a capacitor connected to be inserted between a gate and a source of the first MOS transistor; and a second MOS transistor connected to be inserted between a signal line to be applied with a image signal voltage and the gate of the first MOS transistor, the second MOS transistor being controlled by a scan signal to change between ON-state and OFF-state, wherein ON-period of the first transistor is established within a period in which the photo-emission element is maintained to an extinction state and the signal line is applied with a voltage having a fixed level independent from the image signal voltage. | 01-30-2014 |
20140035969 | DISPLAY APPARATUS, METHOD OF DRIVING A DISPLAY, AND ELECTRONIC DEVICE - In a display apparatus including a switching transistor, 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. | 02-06-2014 |
20140035973 | DISPLAY APPARATUS AND ELECTRONIC APPARATUS - Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel. | 02-06-2014 |
20140043218 | 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. | 02-13-2014 |
20140049456 | DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - A display device including: a pixel array section; power supply lines; and auxiliary electrodes, wherein each pixel has an auxiliary capacitance, and one of electrodes of the auxiliary capacitance is connected to the source electrode of the drive transistor, and another electrode is connected to the auxiliary electrode for the pixel. | 02-20-2014 |
20140049530 | 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. | 02-20-2014 |
20140054575 | DISPLAY UNIT - A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity. | 02-27-2014 |
20140055431 | IMAGE DISPLAY APPARATUS - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 02-27-2014 |
20140055432 | DISPLAY DEVICE - Disclosed herein is a display device that allows a vertical scanning line to be shared between a plurality of rows without increasing the number of control lines or control signals, the display device including pixel circuits; vertical scanning lines; and horizontal scanning lines. | 02-27-2014 |
20140055443 | DISPLAY DEVICE, DISPLAY DATA PROCESSING DEVICE, AND DISPLAY DATA PROCESSING METHOD - A display device includes: an extraction unit extracting an edge component of a display data signal; an adder unit adding an edge component to the display data signal; a signal generation unit generating a control signal in accordance with the display data signal and an output signal of the adder unit; a correction unit carrying out correction processing on the edge component in accordance with the control signal and outputting the corrected edge component to the adder unit; and a display unit carrying out a display operation in accordance with the output signal of the adder unit. | 02-27-2014 |
20140062844 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - There is provided a display device including pixel circuits which are arranged and each of which includes a driving transistor to drive an electro-optical element and a capacitor connected between a gate electrode and one source/drain electrode of the driving transistor. The driving transistor is configured by stacking the gate electrode and the source/drain electrode and a peripheral portion of the gate electrode is covered by the source/drain electrode. | 03-06-2014 |
20140078130 | PIXEL CIRCUIT AND DISPLAY APPARATUS - A pixel circuit performs a threshold voltage correcting function. A sampling transistor becomes conductive in response to a control signal supplied from a scan line and samples a video signal supplied from a signal line to a pixel capacitor during a horizontal scanning period. The pixel capacitor applies an input voltage to a gate of a drive transistor in response to the sampled video signal. The drive transistor supplies an output current in accordance with the input voltage to a light-emitting device. A threshold voltage correcting period is provided to be part of the horizontal scanning period, to detect the threshold voltage of the drive transistor, and to write the threshold voltage in the pixel capacitor. | 03-20-2014 |
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 |
20140125717 | DISPLAY APPARATUS, DRIVING METHOD THEREOF, AND ELECTRONIC SYSTEM - A display apparatus includes: a pixel array section including a row of first and second 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 on the signal line to hold the signal potential in the holding capacitor, the driving transistor makes the light emitting device conductive to be in a luminous state in accordance with the held signal potential, and the switching transistor becomes ON in accordance with the control signal supplied in advance of the sampling of the video signal to change the light emitting device to a non-luminous state. | 05-08-2014 |
20140132647 | 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. | 05-15-2014 |
20140139569 | 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. | 05-22-2014 |
20140139649 | DISPLAY DEVICE AND CONTROL METHOD - A stereoscopic video display system includes a display device for displaying stereoscopic video, an image pickup element for generating image data, a position determiner for processing the image data received by the image pickup element to determine position information of at least one object identified in the image data, and a plurality of light output sections each having one or more light transmitters. Each light transmitter is configured to output timing signals having a signal strength based on the determined position information. The stereoscopic video display system also includes at least one set of shutter eyeglasses including a light receiving section for receiving timing signals output from at least one of the light transmitters of the light output sections. | 05-22-2014 |
20140152723 | 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. | 06-05-2014 |
20140175447 | DISPLAY APPARATUS, METHOD OF DRIVING A DISPLAY, AND ELECTRONIC DEVICE - In a display apparatus including a switching transistor, 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. | 06-26-2014 |
20140183510 | DISPLAY UNIT HAVING AN ARRANGEMENT OF A RETENTIVE CAPACITOR AND AN EL DEVICE OF EACH PIXEL WITH RESPECT TO ADJACENT PIXEL FOR LOW LIGHT LEAKAGE AMONG ADJACENT PIXELS - A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity. | 07-03-2014 |
20140204004 | DISPLAY DEVICE WITH POWER SOURCE SUPPLY SCAN CIRCUITS CONDUCTING NEGATIVE FEEDBACK AND DRIVING METHOD THEREOF - A display device includes a pixel array unit having pixels disposed in a matrix shape, each pixel including an electro-optical element, a write transistor for sampling and writing an input signal voltage, a holding capacitor for holding a signal voltage written by the write transistor, and a driver transistor for driving the electro-optical element in response to the signal voltage held in the holding capacitor. The display device further includes a scan circuit for selectively scanning each pixel in the pixel array unit at a row unit basis, and a plurality of power source supply scan circuits for selectively supplying a first potential and a second potential lower than the first potential to power supply line wired per each pixel row of the pixel array unit to supply current to the driver transistors, synchronously with scanning by the scan circuit. | 07-24-2014 |
20140209917 | DISPLAY DEVICE WITH THRESHOLD CORRECTION - A display device comprises a first pixel circuit and a second pixel circuit adjacent to the first pixel circuit along a first direction. The first pixel circuit includes a first transistor and a first electro-optic element, and the second pixel circuit includes a second transistor and a second electro-optic element. A power supply line extends along the first direction. A connection wiring is connected between the first transistor and the second transistor, and is connected to the power supply line via a contact portion having at least two contact holes. | 07-31-2014 |
20140210871 | 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. | 07-31-2014 |
20140217384 | 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. | 08-07-2014 |
20140217388 | 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. | 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 |
20140218420 | 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. | 08-07-2014 |
20140232758 | DISPLAY DEVICE AND ELECTRONIC PRODUCT HAVING LIGHT SENSORS IN PLURAL PIXEL REGIONS - 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. | 08-21-2014 |
20140246662 | DISPLAY APPARATUS AND ELECTRONIC APPARATUS - Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel. | 09-04-2014 |
20140247204 | 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 | 09-04-2014 |
20140253608 | 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. | 09-11-2014 |
20140264355 | 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. Each pixel includes a drive transistor for supplying driving current to the light-emitting element in accordance with the video signal stored in a storage capacitor. | 09-18-2014 |
20140267465 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, PROGRAM, AND ELECTRONIC APPARATUS - Provided is a signal processing device including a signal synthesis unit that generates a first synthesis signal configured from an image signal to cause a first light emitting element used for displaying an image to emit light and a dummy pixel signal to cause a second light emitting element used for measuring brightness to emit light, a conversion unit that converts the generated first synthesis signal into a second synthesis signal to cause only the first light emitting element of the first light emitting element and the second light emitting element to emit light at identical brightness, regardless of a degradation degree of the first light emitting element, and a light emission control unit that causes the first light emitting element and the second light emitting element to emit light, on a basis of the second synthesis signal. | 09-18-2014 |
20140313240 | DISPLAY DEVICE, DISPLAY DATA PROCESSING DEVICE, AND DISPLAY DATA PROCESSING METHOD - A display device includes: an extraction unit extracting an edge component of a display data signal; an adder unit adding an edge component to the display data signal; a signal generation unit generating a control signal in accordance with the display data signal and an output signal of the adder unit; a correction unit carrying out correction processing on the edge component in accordance with the control signal and outputting the corrected edge component to the adder unit; and a display unit carrying out a display operation in accordance with the output signal of the adder unit. | 10-23-2014 |
20140320472 | 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. | 10-30-2014 |
20140327009 | DISPLAY AND METHOD FOR MANUFACTURING DISPLAY - A display includes a pixel array part with pixels that each have at least one transistor whose conduction state is controlled by a drive signal input to a control terminal, and a scanner including a plurality of buffers that are formed of transistors. The buffers correspond to a pixel arrangement and output a drive signal to the control terminals of the transistors of the pixels. The transistors of the pixels and the transistors of the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction and has a predetermined wavelength. The transistors in the buffers are formed in such a way that the channel length direction of the transistors is set parallel to the scan direction of the laser light. | 11-06-2014 |
20140327665 | 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 | 11-06-2014 |
20140332797 | 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. | 11-13-2014 |
20140333212 | PIXEL CIRCUIT AND DISPLAY DEVICE - A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain is connected to a power source potential, a capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts. | 11-13-2014 |
20140339531 | 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. | 11-20-2014 |
20140339534 | DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC APPARATUS - A display device including a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal. | 11-20-2014 |
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 |
20140340378 | 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. | 11-20-2014 |
20140340435 | DISPLAY APPARATUS, DISPLAY DATA PROCESSING DEVICE, AND DISPLAY DATA PROCESSING METHOD - A display apparatus includes: an edge processing section extracting an edge component of a display data signal; a display data signal processing section changing the display data signal according to a level conversion signal and adding the edge component thereto; a level conversion signal generating section changing the level conversion signal according to the display data signal and a signal output from the display data signal processing section; and a display section performing a display operation according to the signal output from the display data processing section. | 11-20-2014 |
20140346490 | DISPLAY UNIT - A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity. | 11-27-2014 |
20140347337 | 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. | 11-27-2014 |
20140347338 | PIXEL CIRCUIT, DISPLAY AND DRIVING METHOD THEREOF - The invention provides a pixel circuit that can cancel the influence of the mobility of a drive transistor. A drive transistor supplies a light-emitting element with an output current dependent upon an input voltage. The light-emitting element emits light with a luminance dependent upon a video signal in response to the output current supplied from the drive transistor. The pixel circuit includes a correction unit that corrects the input voltage held by a capacitive part in order to cancel the dependence of the output current on the carrier mobility. | 11-27-2014 |
20140347406 | 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. | 11-27-2014 |
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 |
20140362063 | PIXEL CIRCUIT, DISPLAY DEVICE, DRIVING METHOD OF PIXEL CIRCUIT, AND DRIVING METHOD OF DISPLAY DEVICE - A pixel circuit includes a drive transistor that has a gate connected to an input node and a source connected to an output node. The drive transistor supplies a driving current to an electrooptic element via the output node. A sampling transistor is connected between the input node and a signal line and samples an input signal from the signal line, which is retained in a retaining capacitance connected to the input node. The magnitude of the driving current is based on a value of the retained signal. The pixel circuit further includes a compensating circuit which detects a decrease in the driving current attendant on a secular change of the drive transistor from a side of the output node and feeds back a result of the detection to a side of the input node to compensate for the decrease. | 12-11-2014 |
20150015565 | 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. | 01-15-2015 |
20150042232 | LEVEL SHIFTER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - A level shifter circuit, wherein a first and a second transistor circuit are connected serially, a third and a fourth transistor circuit are connected serially; a first input voltage is applied to the second transistor circuit and a second input voltage is applied to the fourth transistor circuit; an input terminal of the first transistor circuit is connected to an output terminal of the third and the fourth transistor circuits, and an input terminal of the third transistor circuit is connected to an output terminal of the first and the second transistor circuits; two transistor circuits of at least one side of two transistor circuits of a first fixed power source side and two transistor circuits of a second fixed power source side are configured of double gate transistors; and the level shifter circuit has a switch element for applying a voltage to a common connection node. | 02-12-2015 |
20150054802 | BUFFER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE, AND ELECTRONIC EQUIPMENT - A buffer circuit includes a first transistor circuit having a first conductivity type transistor, a second transistor circuit having a second conductivity type transistors, in which the first and second transistor circuits are serially connected between a first fixed power supply and a second fixed power supply, and input terminals and output terminals of each of the first and second transistor circuits are connected in common respectively, in which at least one transistor circuit of the first transistor circuit and the second transistor circuit is a double gate transistor, and in which wherein a switch element, when any one transistor circuit of the first and the second transistor circuits is in an operating state, is included to supply a voltage of a third fixed power supply to a common connection node of the double gate transistor of the other transistor circuit. | 02-26-2015 |
20150054819 | DRIVE METHOD OF DISPLAY DEVICE - A drive method of a display device includes the steps of: performing threshold voltage cancel processing at least once, which changes a potential of a second node of a display device toward a potential obtained by subtracting a threshold voltage of a drive transistor from a potential of a first node by applying a given drive voltage to one source/drain region of the drive transistor from a feeding line while maintaining the potential of the first node; and then, performing writing processing which applies a video signal to the first node from a data line through a write transistor, wherein the sum of lengths of periods in which the threshold voltage cancel processing is performed is so set as to be shorter as a frame frequency becomes higher. | 02-26-2015 |
20150084030 | 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. | 03-26-2015 |
20150084940 | 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. | 03-26-2015 |