Patent application number | Description | Published |
20110227896 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode (OLED) display including a substrate main body; a driving circuit on the substrate main body; an organic light emitting element on the driving circuit; and a front substrate covering the organic light emitting element and coupled to the substrate main body, wherein the driving circuit includes a wire, the wire including a planar portion parallel to a surface of the substrate main body, and a connection portion connected to the planar portion and extending in a direction orthogonal to the substrate main body. | 09-22-2011 |
20110267327 | ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display is capable of reducing variation in power transmitted to pixels to reduce or prevent non-uniformity of brightness from being generated. The organic light emitting display includes a pixel including a red sub pixel, a green sub pixel, and a blue sub pixel and first pixel power source lines for supplying a first pixel power from a first pixel power source to the red sub pixel, the green sub pixel, and the blue sub pixel, wherein the first pixel power source lines coupled to at least two different color sub pixels of the red, green and blue sub pixels have different widths. The first pixel power source lines have widths that may correspond to a voltage drop of the first pixel power source or may correspond to deterioration of the respective sub pixels to which they are coupled. | 11-03-2011 |
20110292014 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device that can display an image with desired luminance is disclosed. The organic light emitting display device includes: pixels at crossing regions of scan lines and data lines; first control transistors between a first power supply (for supplying current to the pixels) and the pixels in the odd-numbered rows (or, in a second embodiment, the even-numbered rows); and second control transistors between the first power supply and the pixels in the even-numbered rows (or, in the second embodiment, the odd-numbered rows). The first control transistors are configured to turn on and off in alternation with the second control transistors during a scan period of one frame period. | 12-01-2011 |
20110310077 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel has a simple structure and compensates for a threshold voltage of a driving transistor. An organic light emitting display device includes the pixel, which includes: an organic light emitting diode; a first transistor having a second electrode coupled to the organic light emitting diode and a first electrode coupled to a data line; a second transistor between a gate electrode and the second electrode of the first transistor and turned on when a scan signal is supplied to a scan line; and a storage capacitor electrically coupled between the gate electrode of the first transistor and a first power supply. | 12-22-2011 |
20120001184 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE - A transparent organic light-emitting display device has an improved transmittance and a reduced voltage drop in an opposite electrode. The organic light-emitting display device includes: a first substrate having a transmitting region and a plurality of pixel regions separated from each other by the transmitting region interposed between the pixel regions; a plurality of pixel electrodes being located at the pixel regions, respectively; an opposite electrode facing the pixel electrodes and being at the transmitting region and the pixel regions; a second substrate facing the opposite electrode and being bonded to the first substrate; a first conductive unit being between the second substrate and the opposite electrode, opposite ends of the first conductive unit contacting the second substrate and the opposite electrode, respectively; and a second conductive unit facing the first conductive unit and contacting the opposite electrode that is between the first conductive unit and the second conductive unit. | 01-05-2012 |
20120019499 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device operates for an initializing period, a scan period and an emission period divided from one frame period. The organic light emitting display device includes: a data driver for supplying data signals to output lines; a connecting unit for selectively coupling a data line of data lines to a corresponding one of the output lines or an initial power supply, and being positioned between the output lines and the data lines; a second power driver for applying second power having a low level and a high level to pixels positioned at crossing regions of scan lines and the data lines; and a first control line commonly coupled to the pixels, in which each of the pixels includes an organic light emitting diode, and an anode electrode of the organic light emitting diode is supplied with a voltage of the initial power supply for the initializing period. | 01-26-2012 |
20120019500 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An embodiment relates to an organic light emitting display device that has a simple structure and compensate threshold voltage of a driving transistor. | 01-26-2012 |
20120019505 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel includes: an organic light emitting diode; a first transistor having a second electrode coupled with the organic light emitting diode and a first electrode coupled with a data line; a second transistor coupled between a gate electrode and the second electrode of the first transistor and turned on when a first scan signal is supplied to a first scan line; a third transistor coupled between the first electrode of the first transistor and the data line and turned on when a second scan signal is supplied to the second scan line; a first capacitor coupled between the first electrode of the first transistor and a first power supply; and a second capacitor coupled between the gate electrode of the first transistor and the first power supply. | 01-26-2012 |
20120038606 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display includes a pixel unit having pixels coupled to scan lines, first control lines, second control lines, data lines, and first and second power sources, a control line driver for providing a first control signal and a second control signal to the pixels through the first control lines and the second control lines, a scan driver for providing scan signals to the pixels through the scan lines, and a data driver for providing data signals to the pixels through data lines. The scan driver simultaneously supplies a first scan signal to the pixels through the scan signals. In the organic light emitting display, deviation in the threshold voltages of the driving transistors included in the pixels is compensated without a power swing so as to display an image with uniform brightness. | 02-16-2012 |
20120097951 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - An organic light-emitting display device includes a substrate including a rectangular light-emitting area and a circuit area, the circuit area including a thin film transistor, the light-emitting area including an electroluminescent layer produced by a solution deposition process, the light-emitting area being bounded by a first major side, a second major side, a first minor side and a second minor side, the first major side being opposite from and parallel to a second major side, each of these sides having wiring or dummies arranged thereat, and a pixel defining layer arranged on the wirings and on the dummies. In order to produce a uniform thickness electroluminescent layer via a solution deposition process, top surfaces of the pixel defining layer on each of the wirings and dummies that border the light emitting area are arranged in a same plane that is parallel to the substrate. | 04-26-2012 |
20120113234 | Stereoscopic image display device and driving method thereof, and data driving apparatus and shutter glasses for stereoscopic image display device - A stereoscopic image display device includes a display unit including a plurality of pixels and a data driver supplying first image data for a first view point to the plurality of pixels, second image data for a second view point to the plurality of pixels after supply of the first image data, third image data for the second view point to the plurality of pixels after supply of the second image data, and fourth image data for the first view point to the plurality of pixels after the input of the third image data. The stereoscopic image display device using such a time-division type scheme may decrease driving speed needed to display the stereoscopic image, may decrease reduction of luminance by reducing an amount of black data, and may decrease power consumption. | 05-10-2012 |
20120139901 | Pixel, stereopsis display device, and driving method thereof - The stereopsis display device comprises: a scan driver, transmitting a plurality of scan signals to a plurality of scan lines; a gate driver, transmitting a plurality of gate signals to a plurality of gate lines; a data driver, transmitting a plurality of data signals to a plurality of data lines; a controller controlling the scan driver, the gate driver, and the data driver, generating image data signals corresponding to a left-eye image period and a right-eye image period respectively, during one frame, and supplying them to the data driver; and a display unit, including a plurality of pixels, connected to a corresponding scan line, among the plurality of scan lines, the plurality of gate lines, and a corresponding data line, among the plurality of data lines. | 06-07-2012 |
20120139905 | Stereoscopic image display device and driving method thereof - A stereoscopic image display device may include: a display including a plurality of pixels; a data driver for applying first viewpoint image data and second viewpoint image data to a plurality of data lines connected to the pixels; a scan driver for applying a scan signal to a plurality of scan lines connected to the pixels to sequentially input the first viewpoint image data and the second viewpoint image data to the pixels; and a light emission driver for sequentially applying a light emitting signal to a plurality of light emitting lines connected to the pixels to allow the pixels to which the first viewpoint image data are input to sequentially emit light, and simultaneously applying a light emitting signal to a plurality of light emitting lines connected to the pixels to allow the pixels to which the second viewpoint image data are input to simultaneously emit light. | 06-07-2012 |
20120146999 | PIXEL FOR DISPLAY DEVICE, DISPLAY DEVICE, AND DRIVING METHOD THEREOF - A pixel of a display device is disclosed. According to one aspect, the pixel includes an organic light emitting diode (OLED). The pixel further includes a data sustain unit configured to maintain a data signal input from a data line during light emission of the OLED, a driving current supply unit configured to receive the data signal from the data sustain unit to emit light from the OLED, and a relay transistor configured to insulate the data sustain unit and the driving current supply unit from each other during light emission by the OLED. A data signal input to the data sustain unit is transmitted to the driving current supply unit after the OLED emits the light. A driving speed at which data to display a stereoscopic image is input may be decreased, a luminance reduction by black data may be reduced, and power consumption may be reduced. | 06-14-2012 |
20120154380 | PIXEL CIRCUIT, DEVICE AND METHOD FOR DISPLAYING STEREOSCOPIC IMAGE - A stereoscopic image display device is disclosed. According to one aspect, the stereoscopic image display device includes a display panel, a timing controller, a data driver, and a gate driver. The timing controller alternately outputs a left frame image signal and a right frame image signal, and outputs a plurality of first and second control signals. The data driver drives the data lines in response to the left frame image signal, the right frame image signal and the first control signals. The gate driver drives the gate lines and outputs a transfer signal in response to the second control signals. Each of a plurality of pixels includes a first transistor, a hold capacitor, a second transistor, a storage capacitor, and a liquid crystal capacitor. The first transistor is connected between a corresponding data line and a first node, and has a gate connected to a corresponding gate line. The hold capacitor is connected between the first node and a ground voltage. The second transistor is connected between the first node and a second node, and has a gate configured to receive the transfer signal. The storage capacitor is connected between the second node and the ground voltage. The liquid crystal capacitor is connected between the second node and the ground voltage. | 06-21-2012 |
20130135274 | Organic Light-emitting Display Device and Method of Manufacturing the Same - In an organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device comprises: a plurality of pixels, each including an electroluminescence (EL) device and a thin film transistor (TFT); and a power voltage supply line for applying a voltage to the TFT of each pixel. The power voltage supply line is divided into two lines disposed at respective sides of each pixel. An area where a power voltage supply line overlaps with another line is reduced, and thus the possibility that a short circuit may occur between the power voltage supply line and another line is decreased, thereby reducing a defect percentage of the product. | 05-30-2013 |
20130249883 | PIXEL CIRCUIT, METHOD OF DRIVING A PIXEL CIRCUIT, AND ORGANIC LIGHT EMITTING DISPLAY DEVICE - A pixel circuit includes an organic light emitting diode, a first PMOS transistor coupled between a first power voltage and an anode electrode of the organic light emitting diode, a second PMOS transistor coupled between a first node and the anode electrode of the organic light emitting diode, a first capacitor coupled between a second node and the first node, a second capacitor coupled between the first power voltage and the second node, a third PMOS transistor coupled between a data line and the second node, a fourth PMOS transistor coupled between a third node and the second node, a third capacitor coupled between the third node and a gate terminal of the third PMOS transistor, and a fifth PMOS transistor coupled between the data line and the third node. | 09-26-2013 |
20140070709 | METHOD OF ARRANGING POWER-LINES FOR AN ORGANIC LIGHT EMITTING DISPLAY DEVICE, DISPLAY PANEL MODULE, AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME - A method of arranging power-lines between a power supply circuit and a display panel in an organic light emitting display device, the method including: substantially symmetrically arranging first high power-lines between the power supply circuit and the display panel, the first high power-lines being configured to concurrently transmit a first high power voltage to first pixels; substantially symmetrically arranging second high power-lines outside of the first high power-lines between the power supply circuit and the display panel, the second high power-lines being configured to concurrently transmit a second high power voltage to second pixels; and substantially symmetrically arranging third high power-lines outside of the second high power-lines between the power supply circuit and the display panel, the third high power-lines being configured to concurrently transmit a third high power voltage to third pixels. | 03-13-2014 |
20140111563 | PIXEL, STEREOSCOPIC IMAGE DISPLAY DEVICE, AND DRIVING METHOD THEREOF - A stereoscopic image display device includes a display panel including a plurality of pixels, a scan driver, a gate driver, a data driver, and a controller, and a sub-frame includes a first period during which a data voltage according to an image data signal emitted in the previous sub-frame is initialized, a second period during which a data voltage according to the image data signal written in the previous sub-frame is transmitted and a threshold voltage of a driving transistor of each pixel is compensated, a third period during which a data voltage according to a next sub-frame's data signal is sequentially written to the respective pixels, and a fourth period that is concurrent with and equal to or longer than the third period and during which the respective pixels concurrently emit light corresponding to the data voltage according to the image data signal written in the previous sub-frame. | 04-24-2014 |
20140176520 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of being driven at a low driving frequency that includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first power supply coupled to a first electrode thereof to the OLED to correspond to a voltage applied to a first node, a second transistor coupled between a data line and a second node and turned on when a scan signal is supplied to a scan line, a third transistor coupled between the first node and the second node and turned on when a second control signal is supplied to a second control line, a first capacitor coupled between the second node and a fixed voltage source, and a second capacitor and a third capacitor serially coupled between the first node and the first power supply. | 06-26-2014 |
20140253612 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a plurality of pixels, each of the pixels including: a switching transistor; a relay transistor; a first capacitor; a driving transistor; and an organic light emitting diode (OLED). The OLED emits light according to a driving current from a first power source voltage, and a light emitting period for the OLED is one of a first light emitting period that is not temporally overlapped with a scan period in which data are written to the pixels or a second light emitting period that is temporally overlapped with the scan period. A duty of the light emitting period is controlled by controlling a time when a second power source voltage is applied as a low level voltage within the first light emitting period or controlling a time when the second power source voltage is applied as a low level voltage within the second light emitting period. | 09-11-2014 |
20140346470 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - Provided is an organic light emitting display device. The device includes an organic electroluminescence element in which a pixel electrode, an intermediate layer including a light emitting layer, and a cathode electrode are successively stacked, a cathode contact including an upper electrode contacting the cathode electrode and a lower electrode disposed on the same layer as the pixel electrode to contact the upper electrode, and a line disposed on the same layer as the lower electrode. At least three cathode contacts are disposed in a direction crossing the line, and the line is disposed between the cathode contacts. | 11-27-2014 |
20140346475 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF REPAIRING THE SAME - Provided is an organic light-emitting display apparatus and a method of repairing the same. The organic light-emitting display apparatus includes: an emission device comprising a plurality of sub-emission devices; an emission pixel circuit configured to supply a driving current to the emission device; a dummy pixel circuit configured to supply the driving current to the emission device; and a repair line coupling the emission device to the dummy pixel circuit, wherein the emission device is configured to receive the driving current from the emission pixel circuit or the dummy pixel circuit. | 11-27-2014 |
20140347401 | PIXEL, DISPLAY DEVICE COMPRISING THE SAME AND DRIVING METHOD THEREOF - A display device and a driving method thereof are disclosed. In one aspect, the display device includes a plurality of pixels, each including a driver which generates a driving current according to an input image data signal and a light emission portion formed of an organic light-emitting diode which emits light according to the driving current and at least one dummy pixel connected to a repair line that is connected to a light emission portion of at least one first pixel among the plurality of pixels. The dummy pixel includes a dummy pixel driver having the same structure as the drivers of each of the plurality of pixels, a dummy pixel light emission portion formed of an organic light-emitting diode, and a repair driver which transmits a driving current generated in the dummy pixel driver through the repair line when a driver of the first pixel fails. | 11-27-2014 |
20140353671 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A display device may include a display area for displaying an image. The display device may further include a peripheral area that surrounds the display area. The display device may further include a pixel disposed in the display area. The display device may further include a bus line disposed in the peripheral area and configured to transmit a signal. The display device may further include a connection conductor set electrically connected to the bus line. The display device may further include a branch line electrically connected to the connection conductor set, configured to receive the signal from the bus line, and configured to transmit the signal to the pixel, wherein a portion of the branch line is disposed in the display area. | 12-04-2014 |