| Patent application number | Description | Published |
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| 20110025667 | POWER CONTROL SYSTEM FOR DISPLAY MODULE INCLUDING EXTERNAL DC-DC CONVERTER - A power control system includes a display module for displaying an image in accordance with image data, a DC-DC converter being external to the display module and for applying power to the display module, a host for generating a control signal for controlling the display module and outputting the control signal through a signal output pin of signal input/output pins of the host, and a connector connected to the signal input/output pins and for applying the control signal to the DC-DC converter and the display module. The DC-DC converter is adapted to apply power to the display module according to the control signal. Accordingly, the number of signal input/output pins of the connector can be reduced. | 02-03-2011 |
| 20110025678 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting display device is disclosed. The device includes a data driver for supplying a plurality of data signals and a reset voltage to each output line during every horizontal period. The data driver is configured to selectively supply the reset signal and the reset voltage based on a comparison of the data signal input to each data line during a current horizontal period with the data signal input to the data lines during the previous horizontal period. | 02-03-2011 |
| 20110057913 | Display apparatus and apparatus and method for generating power voltages - An apparatus for generating power voltages of a display apparatus including a plurality of pixel circuits comprises a storage capacitor power outputting unit configured to generate a storage capacitor power voltage using a first power voltage and apply the storage capacitor power voltage to storage capacitors included in the plurality of pixel circuits, and a gamma filter power outputting unit configured to generate a gamma filter power voltage using the first power voltage and apply the gamma filter power voltage to a gamma voltage generating unit. The first power voltage is generated from a power voltage supplied by a voltage source. The storage capacitor power voltage and the gamma filter power voltage are generated so as to have the same phase. | 03-10-2011 |
| 20110187693 | Display apparatus and method of operating the same - Provided are a display apparatus and a method of operating the display apparatus that generate data signals that compensate for a deviation of a first power supply voltage output from a direct current (DC)-DC converter. | 08-04-2011 |
| 20110254871 | DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - A display device includes a plurality of pixels, each of said plurality of pixels includes a driving transistor and a light emitting diode, a compensator to receive first and second pixel currents generated by the plurality of pixels according to first and second data voltages respectively applied to the plurality of pixels, the compensator to calculate an image data compensation amount to compensate for variations in characteristics of the driving transistor of each of said plurality of pixels and a data selector to transmit the first and second data voltages to the plurality of pixels and to transmit the first and second pixel currents to the compensator, the compensator to measure the first and second pixel currents generated as a result of the first and second data voltages corresponding to different gray scale levels and to calculate an actual threshold voltage and mobility of the driving transistor of each of the pixels, the compensator including a measurement resistor, the compensator to control a resistance value of the measurement resistor, the measurement resistor to convert the first pixel current corresponding to the first data voltage into a first measured voltage and the second pixel current corresponding to the second data voltage into a second measured voltage. | 10-20-2011 |
| 20110279436 | Display device and driving method thereof - An organic light emitting diode (OLED) display includes a display unit including a plurality of pixels, a plurality of scan lines, and a plurality of data lines, a data driver transmitting a plurality of data signals to the plurality of data lines, a scan driver transmitting a plurality of scan signals to the plurality of scan lines, a compensation controller supplying a predetermined first current to each organic light emitting diode in each of the plurality of pixels during a sensing period for measuring a driving voltage of the organic light emitting diode for each of a plurality of pixels, receiving the driving voltage of the organic light emitting diode supplied with the first current, and outputting measuring data for the transmitted driving voltage; and a signal controller compensating an input video signal according to the measuring data to generate image data. The compensation controller is separate from and external to the data driver. | 11-17-2011 |
| 20110279437 | Organic light emitting display and driving method thereof - An organic light emitting diode (OLED) display and a driving method thereof include an OLED, a driving transistor supplying a driving current to the OLED, a data line transmitting a data signal to the driving transistor, a first switch including a first electrode connected to one electrode of the OLED and a second electrode connected to the data line, and a second switch including a first electrode connected to the data line and a second electrode connected to the gate electrode of the driving transistor. The first switch is turned on such that a predetermined first current is transmitted to the OLED, the voltage of one electrode of the OLED is received through the data line, the deterioration degree of the OLED is detected according to the transmitted voltage, and the data signal transmitted to the data line is compensated according to the detected deterioration. | 11-17-2011 |
| 20110279444 | DISPLAY DEVICE TO COMPENSATE CHARACTERISTIC DEVIATION OF DRVING TRANSISTOR AND DRIVING METHOD THEREOF - A display device includes a display having a plurality of pixels, a compensator that for each of a plurality of pixels, calculates an image data compensation amount that compensates a characteristic deviation of a driving transistor of each pixel by measuring the first pixel current generated by the first data voltage and the second pixel current generated by the second data voltage obtained by amending the first data voltage, and initializes a panel capacitor that is parasitic on a plurality of data lines connected to the plurality of pixels in the measurement of the first pixel current and the measurement of the second pixel current; and a signal controller that generates an image data signal by reflecting the compensation amount of the image data. It is possible to shorten a compensation period for compensating a characteristic deviation between driving transistors, and since a data writing period in which a data signal is written in each pixel and a light emitting period in which, after the writing of the data signal corresponding to each pixel is completed, the entire pixel emits light at once, making it possible to more efficiently display the image. | 11-17-2011 |
| 20110298836 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting diode display is disclosed. A signal from the pixels in the display is transmitted to a circuit which compensates the image data according to the signal, which is indicative of one or more of ageing of the organic light emitting diodes, the threshold voltages of the driving transistors, and current mobility of the driving transistors. | 12-08-2011 |
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| 20110204369 | Organic Light-Emitting Display Device - An organic light-emitting display device which is transparent by improving a transmittance in transmitting regions and which reduces a voltage drop in an opposite electrode comprises: a substrate having a transmitting region and pixel regions separated from each other by the transmitting region; thin film transistors positioned on the substrate and disposed in the pixel regions, respectively; a passivation layer covering the thin film transistors, formed in the transmitting region and the pixel regions, and having a first opening formed in a location corresponding to at least a portion of the transmitting region; pixel electrodes formed on the passivation layer so as to be electrically connected to the thin film transistors, respectively, located in the pixel regions, and disposed so as to overlap and cover the thin film transistors, respectively; an opposite electrode facing the pixel electrodes, formed so as to be able to transmit light, and located in the transmitting region and the pixel regions; an organic emission layer interposed between the pixel electrodes and the opposite electrode so as to emit light; and a conduction unit formed of a conductive material, disposed so as to overlap with the first opening, and contacting the opposite electrode. | 08-25-2011 |
| 20110215329 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE - An organic light-emitting display device, formed to be transparent, includes a substrate; a plurality of thin film transistors disposed on the substrate; a passivation layer covering the plurality of thin film transistors; a plurality of pixel electrodes disposed on the passivation layer and connected electrically to the plurality of thin film transistors, and overlapping and covering the plurality of thin film transistors; a first conductive unit disposed on the passivation layer to be disconnected electrically from the pixel electrodes; a pixel defining layer formed on the passivation layer to cover edges of the pixel electrodes; an opposite electrode facing the plurality of pixel electrodes, and covering at least part of the first conductive unit; an organic layer, including an emission layer, disposed between the pixel electrodes and the opposite electrode; and a second conductive unit connected electrically to a portion of the opposite electrode and the first conductive unit. | 09-08-2011 |
| 20110220899 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display device having high transmittance with respect to external light and a method of manufacturing the same. The organic light emitting display device includes a substrate; a plurality of pixels formed on the substrate, each of the pixels including a first region that emits light and a second region that transmits external light; a plurality of thin film transistors disposed in the first region of each pixel; a plurality of first electrodes disposed in the first region of each pixel and electrically connected to the thin film transistors, respectively; a second electrode formed opposite to the plurality of first electrodes and comprising a plurality of transmission windows corresponding to the second regions; and an organic layer formed between the first electrodes and the second electrode. The transmission windows can be formed in the second electrode, that is, a cathode. | 09-15-2011 |
| 20110220908 | Organic light emitting display device - An organic light emitting display device includes a substrate, a plurality of sub-pixels on the substrate, each sub-pixel including a first region configured to emit light and a second region configured to transmit external light, a plurality of thin film transistors disposed in the first region of the each sub-pixel, a plurality of first electrodes disposed in the first region of each sub-pixel and electrically connected to the thin film transistors, a first insulating layer on at least a portion of the first region of each sub-pixel to cover a portion of the first electrode, an organic emission layer on the first electrode, a second insulating layer on at least a portion of the second region of each sub-pixel, the second insulating layer including a plurality of openings therein, and a second electrode covering the organic emission layer, the first insulating layer, and the second insulating layer. | 09-15-2011 |
| 20110227873 | TOUCH CONTROLLED DISPLAY DEVICE - A touch controlled display device is disclosed. The device comprises: a display panel including a display panel including a first surface, a second surface opposing the first surface and a plurality of pixels between the first and second surfaces, each pixel including a transmission area and a display area, the transmission area being configured to transmit light therethrough, an infrared source located on the side of the second surface of the display panel and configured to irradiate infrared light toward the first surface through the second surface, and an infrared sensor located on the side of the second surface of the display panel and configured to detect infrared light from the first surface through at least one transmission area of the plurality of pixels. | 09-22-2011 |
| 20110227875 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND TOUCH CONTROLLED DISPLAY DEVICE HAVING THE SAME - An organic light emitting diode display and touch controlled display device having the same are disclosed. The organic light emitting diode display includes: a display area including an organic light emitting layer emitting light, and a first electrode and a second electrode facing each other, the organic light emitting layer interposed between the first and second electrodes; and a transmission area adjacent to the display area, including a portion of the second electrode spaced away from the second electrode by a spacing area and a protruding portion on which the portion of the second electrode is seated, configured to transmit light irradiated from the outside through the spacing area. | 09-22-2011 |
| 20110272675 | Organic light emitting display device - A transparent organic light emitting display device having a uniform transmittance of external light and having uniformly formed transmissive windows in pixels. The device includes a substrate; pixels formed on the substrate, each of the pixels comprising: at least one light emitting region for emitting light; at least one transmissive region for transmitting external light; and at least one circuit region comprising a pixel circuit unit; an insulating layer covering the pixel circuit unit; pixel electrodes formed on the insulating layer in the light emitting region and the transmissive region of each pixel, and electrically connected to the pixel circuit unit; an organic layer formed on the pixel electrodes; and a facing electrode formed on the organic layer, integrally formed over all of the pixels, and having transmissive windows, wherein each of the transmissive windows corresponds to the transmissive region of each of the pixels. | 11-10-2011 |
| 20120080680 | Organic light emitting display device - An organic light emitting display device includes a substrate, a plurality of unit pixels on the substrate, each unit pixel including a first region that emits light and a second region that transmits external light, thin film transistors (TFTs) disposed in the first region of each unit pixel, first electrodes disposed in the first region of each unit pixel, each first electrode being electrically connected to one of the TFTs, a second electrode facing the first electrodes, and commonly disposed in the unit pixels, and an organic layer interposed between the first electrodes and the second electrode, and including an emissive layer. With respect to two adjacent pixels of the plurality of unit pixels, the first region and the second region in one unit pixel are symmetrical with the first region and the second region in another adjacent unit pixel, and the second regions are connected to each other. | 04-05-2012 |
| 20120104422 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display and a method of manufacturing the same. The organic light-emitting display is a transparent display where one can see through the display to view an image on the other side of the display. Each pixel of the display has a first region that includes an organic light emitting diode and a thin film transistor, and a larger second region that is transparent. The second region is made of either transparent layers or ultra thin layers so that light is not blocked. A second electrode of the display may include magnesium and may be produced by a selective deposition process, so that use of a fine metal mask may be avoided. | 05-03-2012 |
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| 20110057864 | Emission control driver and organic light emitting display using the same - An emission control driver including a plurality of stages, each including a first unit adapted to generate a first output signal at a first node thereof based on an input signal, a clock signal, a inverted input signal, first and second power source voltages, a second unit adapted to output an emission control signal based on the first output signal and the input signal, a third unit adapted to transmit the first or second power source to the first unit based on the emission control signal, a inverted clock signal and an inverted emission control signal when a first path between the first power source and the first node and a second path between the second power source and the first node are blocked by the clock signal, and a fourth unit adapted to output a inverted emission control signal based on the emission control signal and the first output signal. | 03-10-2011 |
| 20110076599 | APPARATUS AND METHOD FOR ALIGNING MASK - An apparatus and method for aligning a mask that includes disposing and firstly aligning a mask over a first substrate, with a space interposed therebetween, bringing the mask into contact with the first substrate and then measuring the alignment state of the mask with respect to the first substrate to detect an alignment error, secondly aligning the mask with respect to the first substrate based on the alignment error, transferring the first substrate to the next process, disposing and thirdly aligning the mask over a second substrate with the space interposed therebetween, and bringing the mask into contact with the second substrate. | 03-31-2011 |
| 20110080395 | PIXEL CIRCUIT, ORGANIC ELECTRO-LUMINESCENT DISPLAY APPARATUS USING THE PIXEL CIRCUIT AND METHOD OF DRIVING THE APPARATUS - An organic electroluminescent display apparatus including a pixel circuit and a method of driving the organic electroluminescent display apparatus are provided. Embodiments of the present invention may solve problems where the luminance of light is changed due to a change of a voltage of an anode of an organic electro-light emitting device such that an image quality is deteriorated when N-type transistors are used to form the organic electroluminescent display apparatus. | 04-07-2011 |
| 20110115764 | Pixel Circuit and Organic Electroluminescent Display Apparatus Using the Same - An improved pixel circuit including N-type transistors is provided. The pixel circuit includes a light emitting device driven by a driving current according to a gate voltage of a driving transistor. The pixel circuit also includes a first capacitor, a second transistor for transferring a data signal to a first terminal of the first capacitor in response to a scan control signal, a third transistor for diode-connecting the driving transistor in response to the scan control signal, a fourth transistor for applying a first power voltage to a first electrode of the driving transistor in response to an emission control signal, a fifth transistor for applying a sustain voltage to the first terminal of the first capacitor in response to the emission control signal, and a sixth transistor for applying the first power voltage to a second terminal of the first capacitor in response to an initialization control signal. | 05-19-2011 |
| 20110115772 | Pixel Circuit and Organic Electroluminescent Display Apparatus Using the Same - An improved pixel circuit is provided. The pixel circuit includes a light emitting device driven by a drive current according to a voltage applied to a gate electrode of a driving transistor. The pixel circuit also includes a first capacitor, a second transistor for transferring a data signal to a first terminal of the first capacitor in response to a scan control signal applied to a gate electrode of the second transistor, a third transistor for diode-connecting the driving transistor in response to a scan control signal applied to a gate electrode of the third transistor, a fourth transistor for applying a first power voltage to the first electrode of the driving transistor in response to an emission control signal, and a fifth transistor for applying a sustain voltage to a first terminal of the first capacitor in response to the emission control signal. The driving transistor and the second to fifth transistors are N-type transistors. | 05-19-2011 |
| 20110164017 | SCAN DRIVER AND FLAT PANEL DISPLAY DEVICE INCLUDING THE SAME - A scan driver includes a plurality of stages. Each of the plurality of stages includes an odd-numbered scan unit, an even-numbered scan unit, and a signal shift unit. The scan driver can selectively perform progressive scan and interlaced scan by varying logic levels of mode signals and clock signals applied to the stages. | 07-07-2011 |
| 20110227883 | SCAN DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SCAN DRIVER - A scan driver includes a plurality of stages for receiving a first start signal and a second start signal, a first clock signal and a second clock signal, and at least one of two interrupt signals and outputting a scan signal. Each stage includes an up-signal output unit for receiving the first start signal and for outputting a first output signal that is shifted by one horizontal period from the first start signal, a down-signal output unit for receiving a second start signal and outputting a second output signal shifted by one horizontal period from the second start signal, and a scan signal output unit for receiving the first and second output signals and outputting a high-level or low-level scan signal. | 09-22-2011 |
| 20110227884 | SCAN DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SCAN DRIVER - A scan driver is coupled to a plurality of scan lines and includes a plurality of stages. Each of the stages is configured to sequentially receives clock signals that are phase delayed by two horizontal cycles or more from three of a plurality of clock lines, and output a scan signal having a pulse width of two horizontal cycles or more to a corresponding scan line. The scan signals are overlapped with each other by one horizontal cycle or more. | 09-22-2011 |
| 20110285752 | Light emission control driver, light emitting display device using the same, and methodfor driving light emission control signal - A light emission control driver includes a first logic unit configured to receive a plurality of clock signals and a first input signal and generate a first output signal; a second logic unit configured to receive a plurality of clock signals and a second input signal and generate a second output signal; and an output controller configured to receive the first output signal, the second output signal, a first control signal, and a second control signal, and generate a light emission control signal. When a driving scheme of a display unit is a simultaneous light emission mode, the light emission control signal is controlled according to driving of the output controller, and, when the driving scheme of the display unit is a progressive light emission mode, the light emission control signal is controlled according to driving of the first logic unit, the second logic unit, and the output controller. | 11-24-2011 |
| 20120013588 | Display, Scan Driving Apparatus for the Display, and Driving Method Thereof - A scan driving apparatus includes a first driving apparatus connected to a plurality of scan lines and a second driving apparatus connected to the plurality of scan lines. Wherein when one of the first driving apparatus and the second driving apparatus is in a scan enable state such that the plurality of scan lines are applied with a scan signal, the other is in a floating state such that the output terminal is floated. The scan driving apparatus according to the present invention has the function of a shift register for sequentially applying the scan signals and may apply a scan signal of a different waveform which is additionally required. The output terminal of the scan driving apparatus is floated in a period in which a different waveform is necessary such that a scan signal having the different waveform may be applied without influence of the scan signal, thereby realizing a complicated scan signal. | 01-19-2012 |
| 20120044240 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - There is provided a method of driving an organic light emitting display capable of minimizing or reducing the amount of instantaneously current flowing in the display that is driven in a concurrent emission method. The method includes setting pixels included in j blocks of a panel in a non-emission state, charging the pixels with voltages corresponding to data signals, and emitting light by the pixels in units of horizontal lines respectively included in the j blocks to correspond to the charged voltages. | 02-23-2012 |
