Patent application number | Description | Published |
20080238835 | Display apparatus and driving method therefor - A display apparatus disclosed herein includes a plurality of pixel circuits, each having a plurality of switches configured to receive a driving signal of a predetermined period and to be controlled for opening and closing operation by the driving signal, a drive circuit configured to control the open/closed state of the switches, being operable to scan the pixel circuits and open and close the switches in periods independent of each other. | 10-02-2008 |
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 |
20080303847 | Display panel driving method, display apparatus, display panel driving apparatus and electronic apparatus - In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, including the step of: variably controlling, where the one-field period has N light emitting periods, N being equal to or greater than 2, the end timing of the ith light emitting period and the start timing of the i+1th light emitting period so as to satisfy the total light emitting period length within the one-field period, i being an odd number which satisfies 1≦i≦N−1 while i+1 satisfies 2≦i+1≦N. | 12-11-2008 |
20090002282 | EL display panel, power supply line drive apparatus, and electronic device - Disclosed herein is an electroluminescence display panel including: a pixel circuit; a signal line; a scan line; a drive power supply line; a common power supply line; a power supply line drive circuit; a high-potential power supply line; and a low-potential power supply line. | 01-01-2009 |
20090009068 | METHOD FOR MANUFACTURING ORGANIC EL DISPLAY AND ORGANIC EL DISPLAY - Disclosed herein is a method for manufacturing an organic electroluminescence display including multilayer structures that are each formed in a respective one of pixel areas in an effective area of a substrate and are each formed by a lower electrode, an organic layer, and an upper electrode, the organic electroluminescence display having a common electrode that electrically connects the pixel areas, the method including the steps of: forming a protective electrode and an outer-peripheral electrode that are electrically connected to the common electrode; forming the multilayer structures; and carrying out film deposition treatment involving electrification of the substrate. | 01-08-2009 |
20090033686 | Display panel driving method, display apparatus, display panel driving apparatus and electronic apparatus - In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, the driving method including a step of variably controlling, where the one-field period has N light emitting periods disposed therein, N being equal to or greater than 2, the light emitting period length of a particular one of the light emitting periods and the other light emitting period or periods to provide a difference in luminance between the particular light emitting period and the other light emitting period or periods so that the particular light emitting period is visually observed as the center of light emission. | 02-05-2009 |
20090046088 | Organic electroluminescence display apparatus, driving circuit for driving organic electroluminescence light emitting portion, and driving method for organic electroluminescence light emitting portion - A driving circuit for driving an organic electroluminescence light emitting portion includes: a driving transistor of the n channel type having source/drain regions, a channel formation region and a gate electrode; an image signal writing transistor having source/drain regions, a channel formation region and a gate electrode; and a capacitor element. A first voltage for supplying current toward the organic electroluminescence light emitting portion through the driving transistor and a second voltage for preventing a potential difference between the second node and a cathode electrode provided on the organic electroluminescence light emitting portion from exceeding a threshold voltage of the organic electroluminescence light emitting portion are selectively applied from the power supply section to the first one of the source/drain regions of the driving transistor. An LDD (Lightly Doped Drain) structure is formed adjacent the first one of the source/drain regions of the driving transistor. | 02-19-2009 |
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 |
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 |
20090140638 | Display device - A display device in which pixels, each including an emission area, are arranged in a form of a matrix, the display device including: a first electrode formed from the emission area of the pixels to a non-emission area on a periphery of the emission area; a second electrode formed so as to be common to the pixels; and a light emitting material layer formed between the first electrode and the second electrode; wherein film thickness in the non-emission area of at least one of the first electrode and the second electrode is larger than film thickness in the emission area. | 06-04-2009 |
20090153448 | Self-luminous display device and driving method of the same - A self-luminous display device includes: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current channel of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, the drive circuit applies a light emission enabling bias to the light-emitting diode after correcting the drive transistor and writing a data voltage to the control node, provides, during a light emission enabled period in which the light emission enabling bias is applied, a light emission interruption period adapted to change the light emission enabling bias to a non-light emission bias with the data voltage held by the holding capacitor, and performs a light emission disabling process, adapted to reverse-bias the light-emitting diode to stop the light emission, for a constant period after the light emission enabled period. | 06-18-2009 |
20090160743 | Self-luminous display device and driving method of the same - Disclosed herein is a self-luminous display device including: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, during a period in which at least actual threshold voltage and mobility corrections are performed on the drive transistor before the light-emitting diode can emit light, the drive circuit performs a preliminary threshold voltage correction of the drive transistor, i.e., a dummy Vth correction, with the light-emitting diode in a non-light emitting state, the drive circuit next performs a correction preparation for a constant period by reverse-biasing the light-emitting diode and initializing the voltage held by the holding capacitor, and the drive circuit performs the actual threshold voltage correction and mobility correction after the correction preparation. | 06-25-2009 |
20090184902 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits. | 07-23-2009 |
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 |
20090256782 | Image display device and method of driving the same - An image display device includes a display portion formed by disposing pixel circuits in a matrix, and a signal line driving circuit and a scanning line driving circuit for driving the pixel circuits through signal lines and scanning lines of the display portion. The pixel circuit includes at least: a light emitting element; a drive transistor for current-driving the light emitting element by a drive current corresponding to a gate-to-source voltage thereof; a hold capacitor composed of either one capacitor or a plurality of coupling capacitors for holding therein the gate-to-source voltage; and a write transistor adapted to be turned ON/OFF in accordance with a write signal outputted from the scanning line driving circuit, thereby setting a voltage developed across terminals of the hold capacitor at a voltage of corresponding one of the signal line. | 10-15-2009 |
20090256826 | Image display device and driving method of image display device - Disclosed herein is an image display device for displaying input image data on a display section formed by arranging pixel circuits in a form of a matrix by driving the pixel circuits by a signal line driving circuit and a scanning line driving circuit via a signal line and a scanning line of the display section. | 10-15-2009 |
20090278833 | Display apparatus, display-apparatus driving method and eletronic instrument - Disclosed herein is a display apparatus including a pixel matrix section including pixel circuits laid out to form a pixel matrix to serve as pixel circuits each having an electro optical device, a signal writing transistor, a signal storage capacitor, and a device driving transistor, and a power-supply section configured to change a power-supply electric potential appearing on a power-supply line for providing a driving current flowing to the device driving transistor from one level to another in order to control transitions from a light emission period of the electro optical device to a no-light emission period of the electro optical device and vice versa, and stopping an operation to assert the power-supply electric potential on the power-supply line during a portion of the no-light emission period of the electro optical device. | 11-12-2009 |
20090278834 | Display apparatus, display-apparatus driving method and electronic instrument - Disclosed herein is a display apparatus including a pixel matrix section including pixel circuits laid out to form a pixel matrix to serve as pixel circuits each having an electro optical device, a signal writing transistor, a signal storage capacitor, and a device driving transistor, and a power-supply section configured to change a power-supply electric potential appearing on a power-supply line for providing a driving current flowing to the device driving transistor from one level to another in order to control transitions from a light emission period of the electro optical device to a no-light emission period of the electro optical device and vice versa, and stopping an operation to assert the power-supply electric potential on the power-supply line during a portion of the no-light emission period of the electro optical device. | 11-12-2009 |
20090315814 | Self-light emitting display unit and electronic device - A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased. | 12-24-2009 |
20100141626 | Display device, driving method for display device, and electronic apparatus - A display device includes a pixel array unit including pixels arranged in a matrix, the pixels each including an electrooptical element, a writing transistor for writing an image signal, a storage capacitor for storing the image signal, and a driving transistor for driving the electrooptical element in accordance with the image signal, the pixels each having a threshold correction process function for, before light emission of the electrooptical element, changing a source potential of the driving transistor to a potential obtained by subtracting a threshold voltage of the driving transistor from an initial gate potential of the driving transistor; and a power supply unit configured to set, as a power supply potential of a power supply line for supplying a current to the driving transistor, different potential values for a threshold correction period for execution of the threshold correction process and a light-emission period for the electrooptical element. | 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 |
20100149077 | IMAGE DISPLAY PANEL, IMAGE DISPLAY DEVICE, AND MANUFACTURING METHOD OF THE IMAGE DISPLAY PANEL - An image display panel includes: a lower substrate; self-light emitting elements for image display that are arranged on the lower substrate in a matrix shape and form an image display unit; a self-light emitting element for monitoring that is arranged on the lower substrate and emits monitoring light for the image display unit; and an upper substrate that holds the self-light emitting elements for image display and the self-light emitting element for monitoring in conjunction with the lower substrate, wherein the self-light emitting elements for image display emit emission light to the lower substrate side or the upper substrate side, and the self-light emitting element for monitoring emits the monitoring light to at least the upper substrate side or the lower substrate side. | 06-17-2010 |
20100149166 | DISPLAY, METHOD OF DRIVING DISPLAY, AND ELECTRONIC DEVICE - A display includes a pixel array section having pixels in a matrix, each pixel including an electro-optical device, a writing transistor writing a video signal, a storage capacitor retaining the video signal, and a driving transistor driving the electro-optical device based upon the video signal; scan lines for respective rows of the unit providing a scanning signal to the writing transistor; power supply lines for respective rows of the unit selectively providing a first potential and a second potential, lower than the first potential, to a drain electrode of the driving transistor; and signal lines for respective columns of the unit selectively providing the video signal and a video signal reference potential to the writing transistor; wherein a potential setting period is provided from when the pixels are turned off until the first potential is provided to the power supply line. | 06-17-2010 |
20100176400 | Display device and electronic apparatus - A display device includes: a pixel array unit having pixels including a circuit configuration, in which a first electrode of an electro-optical element and a source electrode of a driving transistor are connected together, a gate electrode of the driving transistor and a source electrode or a drain electrode of a writing transistor are connected together, a holding capacitor is connected between the gate electrode and the source electrode of the driving transistor, and an auxiliary capacitor is connected between the first electrode and a second electrode of the electro-optical element, disposed on a substrate in a matrix shape, wherein, from one pixel of adjacent pixels to an area of the other pixel, the auxiliary capacitor of the one pixel is set to be disposed, and an electrode of the auxiliary capacitor that is disposed on the electro-optical element side is conductive with the second electrode of the electro-optical element. | 07-15-2010 |
20110032238 | Pixel circuit and display device - A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits. | 02-10-2011 |
20120062107 | DISPLAY DEVICE - In a display device including, a display area having a plurality of organic EL devices on a substrate; a peripheral area having a driving circuit for the organic EL devices and surrounding the display area on the substrate; and an organic insulating film covering at least the driving circuit, the organic insulating film has a separating groove which divides itself into the inner part and outer part at the periphery of the display area. | 03-15-2012 |
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 |
20120154258 | PIXEL CIRCUIT AND DISPLAY DEVICE - A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits. | 06-21-2012 |
20120176421 | DISPLAY APPARATUS AND METHOD OF LAYING OUT PIXEL CIRCUITS - Herein disclosed a display apparatus including: a pixel array having a matrix of pixel circuits each including respective electrooptical elements for determining a display brightness level and respective drive circuits for driving the electrooptical elements; wherein adjacent two of the pixel circuits are paired with each other, and each of the drive circuits of the adjacent two pixel circuits includes at least one transistor having a low-concentration source/drain region or an offset region of an offset gate structure, the electrooptical elements and the drive circuits of the adjacent two pixel circuits being laid out such that a line interconnecting a drain region and a source region of the at least one transistor extends parallel to a direction of pixel columns of the pixel circuits of the pixel array. | 07-12-2012 |
20120306729 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including: a pixel circuit; a signal line; a scan line; a drive power supply line; a common power supply line; a power supply line drive circuit; a high-potential power supply line; and a low-potential power supply line. | 12-06-2012 |
20130002735 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits. | 01-03-2013 |
20130027281 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME INCLUDING A LIGHT EMISSION INTERRUPTION PERIOD DURING A LIGHT EMISSIN ENABLED PERIOD - A self-luminous display device includes: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current channel of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, the drive circuit applies a light emission enabling bias to the light-emitting diode after correcting the drive transistor and writing a data voltage to the control node, provides, during a light emission enabled period in which the light emission enabling bias is applied, a light emission interruption period adapted to change the light emission enabling bias to a non-light emission bias with the data voltage held by the holding capacitor, and performs a light emission disabling process, adapted to reverse-bias the light-emitting diode to stop the light emission, for a constant period after the light emission enabled period. | 01-31-2013 |
20130044047 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits. | 02-21-2013 |
20130093801 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display panel including pixels disposed on a substrate, where each of the pixels includes a light emitting element, and a capacitor. The capacitor of a first one of the pixels is partially overlapped, in a vertical direction, by respective pixel areas of two of the pixels. The anode of the capacitor of the first one of the pixels may be disposed closer to the substrate than a cathode of the capacitor, thereby reducing a parasitic capacitance between the capacitor and an anode of the light emitting element of one of the two pixels overlapping the capacitor. | 04-18-2013 |
20130140575 | DISPLAY APPARATUS AND METHOD OF LAYING OUT PIXEL CIRCUITS - Herein disclosed a display apparatus including: a pixel array having a matrix of pixel circuits each including respective electrooptical elements for determining a display brightness level and respective drive circuits for driving the electrooptical elements; wherein adjacent two of the pixel circuits are paired with each other, and each of the drive circuits of the adjacent two pixel circuits includes at least one transistor having a low-concentration source/drain region or an offset region of an offset gate structure, the electrooptical elements and the drive circuits of the adjacent two pixel circuits being laid out such that a line interconnecting a drain region and a source region of the at least one transistor extends parallel to a direction of pixel columns of the pixel circuits of the pixel array. | 06-06-2013 |
20130241403 | SELF-LIGHT EMITTING DISPLAY UNIT AND ELECTRONIC DEVICE - A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased. | 09-19-2013 |
20130249385 | DISPLAY DEVICE - A display device including: a substrate with a display area having a plurality of organic EL devices and a peripheral area having a driving circuit for the organic EL devices and surrounding the display area on the substrate; an organic insulating film covering at least the driving circuit; and a groove in the organic insulating film along a line between the display area and the peripheral area, an inorganic but not an not the organic insulating film being present in an outermost portion of the peripheral area spaced apart from the groove. | 09-26-2013 |
20130264557 | DISPLAY DEVICE - A display device in which pixels each including an emission area are arranged in a form of a matrix, the display device including: a first electrode formed from the emission area of the pixels to a non-emission area on a periphery of the emission area; a second electrode formed so as to be common to the pixels; and a light emitting material layer formed between the first electrode and the second electrode; wherein film thickness in the non-emission area of at least one of the first electrode and the second electrode is larger than film thickness in the emission area. | 10-10-2013 |
20130264950 | PIXEL CIRCUIT AND DISPLAY DEVICE - A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits. | 10-10-2013 |
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 |
20140070694 | SELF-LIGHT EMITTING DISPLAY UNIT AND ELECTRONIC DEVICE - A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased. | 03-13-2014 |
20140071031 | SELF-LUMINOUS DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits. | 03-13-2014 |
20140132648 | DISPLAY PANEL DRIVING METHOD, DISPLAY APPARATUS, DISPLAY PANEL DRIVING APPARATUS AND ELECTRONIC APPARATUS - In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, including the step of: variably controlling, where the one-field period has N light emitting periods, N being equal to or greater than 2, the end timing of the ith light emitting period and the start timing of the i+1th light emitting period so as to satisfy the total light emitting period length within the one-field period, i being an odd number which satisfies 1≦i≦N−1 while i+1 satisfies 2≦i+1≦N. | 05-15-2014 |
20140209882 | SELF-LIGHT EMITTING DISPLAY UNIT AND ELECTRONIC DEVICE - A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased. | 07-31-2014 |
20140232705 | DRIVE CIRCUIT, DRIVING METHOD, DISPLAY UNIT, AND ELECTRONIC APPARATUS - A drive section driving a plurality of pixel circuits by line-sequential scanning is provided. On a plurality of the pixel circuits belonging to one horizontal line, the above-described drive section performs a first preparation drive based on a first voltage in a first preparation period, then performs a second preparation drive based on the first voltage in a second preparation period, and performs writing of luminance information in a subsequent writing period. The second preparation period ends at a timing out of the first preparation periods of other horizontal lines. | 08-21-2014 |
20140240206 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line. | 08-28-2014 |
20140247292 | DISPLAY PANEL DRIVING METHOD, DISPLAY APPARATUS, DISPLAY PANEL DRIVING APPARATUS AND ELECTRONIC APPARATUS - In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, the driving method including a step of variably controlling, where the one-field period has N light emitting periods disposed therein, N being equal to or greater than 2, the light emitting period length of a particular one of the light emitting periods and the other light emitting period or periods to provide a difference in luminance between the particular light emitting period and the other light emitting period or periods so that the particular light emitting period is visually observed as the center of light emission. | 09-04-2014 |
20140320548 | 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. | 10-30-2014 |
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 |
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 |
20140346487 | DISPLAY DEVICE HAVING SHARED COLUMN LINES - A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits. | 11-27-2014 |
20140368413 | DISPLAY APPARATUS AND DRIVING METHOD THEREFOR - A display apparatus disclosed herein includes a plurality of pixel circuits each having a plurality of switches configured to receive a driving signal of a predetermined period and be controlled for opening and closing operation by the driving signal; and a drive circuit configured to control the open/closed state of the switches; the drive circuit being operable to scan the pixel circuits and open and close the switches in periods independent of each other. | 12-18-2014 |
20150061980 | EL DISPLAY PANEL, POWER SUPPLY LINE DRIVE APPARATUS, AND ELECTRONIC DEVICE - Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line. | 03-05-2015 |
20150070342 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display panel including pixels disposed on a substrate, where each of the pixels includes a light emitting element, and a capacitor. The capacitor of a first one of the pixels is partially overlapped, in a vertical direction, by respective pixel areas of two of the pixels. The anode of the capacitor of the first one of the pixels may be disposed closer to the substrate than a cathode of the capacitor, thereby reducing a parasitic capacitance between the capacitor and an anode of the light emitting element of one of the two pixels overlapping the capacitor. | 03-12-2015 |