Patent application number | Description | Published |
20090278772 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light emitting display and a method for driving the same. An organic light emitting display includes: a frame memory having a first portion configured to store a first portion of image signals that is the same in an n−1 | 11-12-2009 |
20100283769 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting display is disclosed. In one aspect, the display includes a controller configured to receive an input image signal asynchronous with the first clock, to generate an output image signal based on the input image signal, and to supply the output image signal to the scan and data drivers, wherein the output image signal is synchronous with the first clock. As a result, the image brightness is not dependent upon the frequency of the input image signal. | 11-11-2010 |
20110025670 | Organic Light Emitting Display and Method of Driving the Same - An organic light emitting display capable of reducing power consumption in a standby mode to increase the use time of a battery and a method of driving the same. The organic light emitting display includes a pixel unit for displaying an image by utilizing a plurality of frames and in accordance with data signals and scan signals; a data driver for outputting the data signals; a scan driver for outputting the scan signals; and a controller for controlling the data driver and the scan driver so that, in at least one frame of the plurality of frames, the scan signals are not transmitted to the pixel unit. | 02-03-2011 |
20110025677 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display capable of reducing power consumption in a standby mode and a method of driving the same. The organic light emitting display includes a pixel unit having a first emission region and a second emission region, wherein the pixel unit is configured to generate a driving current in accordance with data signals and scan signals to emit light so that light is emitted by the pixel unit only in the first emission region in a standby mode, a data driver for transmitting the data signals only to the first emission region in the standby mode, a scan driver for outputting the scan signals, and a power source supplier for generating and outputting voltages of an initialization power source and for blocking the driving current from flowing to the second emission region by utilizing a voltage of the initialization power source in the standby mode. | 02-03-2011 |
20110050676 | Apparatus for Outputting Gamma Filter Reference Voltage, Display Apparatus, and Method of Driving the Display Apparatus - An apparatus for outputting a gamma filter reference voltage, the apparatus including a gamma filter reference voltage generator that generates a first reference voltage to be applied as a reference voltage to a gamma filter and a plurality of second reference voltages, a temperature sensor that generates temperature information by sensing temperature, and a reference voltage adjustment unit that selects at least one of the plurality of second reference voltages based on the temperature information and applies the selected second reference voltage to the gamma filter. | 03-03-2011 |
20110084954 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD FOR THE SAME - An organic light emitting display device that includes: a pixel unit that displays an image by receiving a data signal, a scan signal, a first pixel power, and a second pixel power; a regulator that receives first input voltage from the outside and boosts the received first input voltage to generate the first pixel power and inverts the received first input voltage to generate second pixel power; a driver driving unit that includes a power generator and a signal generator generating the data signal and the scan signal. Further, a switching unit that selectively connects the pixel unit with the regulator or the pixel unit with the driver driving unit; and a control unit that transmits the first pixel power and the second pixel power generated by the regulator or the driver driving unit to the pixel unit. | 04-14-2011 |
20110115835 | PIXEL CIRCUIT AND ORGANIC LIGHT- EMITTING DIODE DISPLAY USING THE PIXEL CIRCUIT - A pixel circuit and an organic light emitting diode (OLED) display including the pixel circuit. The pixel circuit includes an organic light emitting diode OLED having an anode; a storage capacitor having a terminal connected to a first electric power and another terminal connected to a first node; a third transistor having a gate connected to a first scan line, a first electrode connected to the first node, and a second electrode connected to the anode of the OLED; a second transistor having a gate connected to the first scan line, a first electrode connected to a data line, and a second electrode connected to a second node; a fourth transistor having a gate connected to a light emission control line, a first electrode connected to the first electric power, and a second electrode connected to the second node; and a first transistor having a gate connected to the first node, a first electrode connected to the second node, and a second electrode connected to the anode of the OLED. A voltage at the first node is adjusted by controlling a pulse width of a first scan signal provided from the first scan line in order to control a current supplied to the OLED. | 05-19-2011 |
20110141089 | POWER DRIVER, SOURCE DRIVER, AND DISPLAY APPARATUS INCLUDING THE DRIVERS - A power driver, a source driver, and a display apparatus including the drivers, may reduce standby mode power consumption. The power driver includes a plurality of boosters and a plurality of amplifiers. The power driver is configured to apply a voltage for driving a display apparatus. The power driver is configured to turn off all the plurality of amplifiers when the display apparatus is in a standby mode. | 06-16-2011 |
20110175880 | POWER DRIVER, DRIVING METHOD OF THE SAME, AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING POWER DRIVER - A power driver for applying a voltage necessary for driving a gate driver for a display panel includes a first booster, a voltage selector, and a second booster. The first booster receives a voltage from a battery and generates a first voltage. The voltage selector selects one of the first voltage and a second voltage generated outside the power driver and applied to the display panel. The second booster receives an output of the voltage selector and generates a voltage necessary for the driving of the gate driver. | 07-21-2011 |
20110205202 | ORGANIC ELECTROLUMINESCENT DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A method and system for controlling power consumption of a display is disclosed. The method includes determining battery voltage, brightness of ambient light, temperature, and adjusting the brightness of the organic electroluminescent display apparatus, or by adjusting the voltage difference between a first power voltage and a second power voltage of the organic electroluminescent display apparatus, according to the battery voltage, the brightness of the ambient light, the temperature, and image data of the organic electroluminescent display apparatus. | 08-25-2011 |
20120032995 | APPARATUS AND METHOD FOR GENERATING GRAY-SCALE VOLTAGE, AND ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE - An apparatus and method for performing natural luminance adjustment by adjusting voltage levels of gray-scale voltages of a display device through a plurality of steps and determining gray-scale voltage levels of intermediate luminance levels using predetermined data when a luminance level of the display device is adjusted. | 02-09-2012 |
20120044273 | DISPLAY APPARATUS AND POWER SUPPLYING METHOD PERFORMED BY DISPLAY APPARATUS - A display apparatus and a power providing method performed by the display apparatus including a panel that operates in a normal mode or a low power display mode; a power supplying unit that outputs a first high voltage and a first low voltage to the panel in the normal mode, wherein the first high voltage and the first low voltage are first power voltages; and a driving integrated circuit that selectively receives a plurality of input voltages according to a display mode, and that outputs a second high voltage and a second low voltage to the panel in the low power display mode, wherein the second high voltage and the second low voltage are second power voltages. | 02-23-2012 |
20130113997 | DISPLAY DEVICE, DRIVING DEVICE FOR DISPLAY DEVICE, AND DRIVING METHOD THEREOF - A display device is disclosed. The display device includes a first horizontal line having a first sequence of colored pixels, and a second horizontal line having a second sequence of colored pixels. The display device also includes a signal controller for detecting a first input video signal and a second input video signal for pixels respectively disposed on a left outermost vertical line and a right outermost vertical line of the display from an input video signal. The signal controller also corrects the first input video signal and the second input video signal so that they have grayscales that are less than a threshold value. The image quality characteristic is improved by removing the color shift phenomenon of the right and left outermost vertical lines in the display device. | 05-09-2013 |
20130127924 | METHOD FOR CONTROLLING BRIGHTNESS IN A DISPLAY DEVICE AND THE DISPLAY DEVICE USING THE SAME - A luminance control method of a display device is provided to control luminance of a display device. The display device has a display unit having a plurality of pixels emitting light. In some aspects, the luminance control method includes receiving a luminance level, applying a first luminance control method if the received luminance level is less than a reference luminance level, calculating an average value of video data for each frame if the luminance level is greater than the reference luminance level, applying the first luminance control method if the average value is less than a reference gray level value, and applying a second luminance control method if the average value is greater than the reference gray value level. | 05-23-2013 |
20130249881 | DISPLAY DEVICE, APPARATUS FOR GENERATING GAMMA VOLTAGE, AND METHOD FOR THE SAME - A display device includes a display unit including a plurality of pixels connected to a plurality of data lines, a data driver selecting a grayscale voltage according to an image data signal among a plurality of gamma voltages to apply the grayscale voltage to the plurality of data lines, a gamma voltage generator generating a plurality of gamma voltages; and a reference voltage generator generating a reference voltage to generate a plurality of gamma voltages in cooperation with a power source voltage to drive the plurality of pixels. | 09-26-2013 |
20140022226 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of minimizing power consumption is disclosed. In one embodiment, the pixel includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first power supply to the OLED to correspond to a voltage applied to a first node, and a second transistor and a third transistor coupled between a second node electrically coupled to a data line and the first node in parallel in a period where a scan signal is supplied. | 01-23-2014 |
20140068374 | DISPLAY DEVICE AND METHOD OF DETECTING ERROR THEREIN - A method of detecting an error in a display device including a memory and a driving IC on which the memory is arranged is disclosed. The method includes receiving display data and a first error correction code of the display data from an outside, generating a second error correction code based on the received display data, comparing the received first error correction code with the generated second error correction code to provide a first comparison result, and detecting the error based on the first comparison result. | 03-06-2014 |
20140191663 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - There is provided an organic light emitting display device capable of reducing power consumption by adjusting a voltage according to an input image and deterioration of the organic light emitting display device and a method of driving the same. | 07-10-2014 |
20140240305 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A power system for an organic light emitting diode (OLED) display includes a power supplier and a power source controller. The power supplier respectively supplies a first power source voltage and a second power source voltage to first and second power source voltage application lines. The power source controller calculates a reference power source voltage corresponding to a maximum average grayscale using a distribution for each grayscale of first to third image data, models each voltage drop of the first and second power source voltages for first to third subpixels, and reflects the voltage drop to the reference power source voltage to change the second power source voltage. | 08-28-2014 |
20140347253 | COMPENSATION UNIT AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - A compensation unit includes a current source unit, a current sink unit, a sensing resistor, a comparator, and a memory. The current source unit is configured to supply a first reference current to a first node. The current sink unit is configured to sink a second reference current from the first node. The sensing resistor is coupled between the first node and a second node. The comparator is configured to: compare a voltage at the first node with a voltage at the second node, and output a comparison result signal based on the comparison. The memory unit is configured to: store compensation data related to operational disparity of at least one organic light emitting diode and/or of at least one driving transistor, output the compensation data, and modify the compensation data based on the comparison result signal. | 11-27-2014 |
20140347332 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light emitting display and a method for driving the same are presented. The display and the method enable display of images at a substantially constant luminance level over time, even when degradation of the organic light emitting diode occurs. Components are used to compensate for the degradation of an organic light emitting diode and a difference in the threshold voltage/mobility of a driving transistor. | 11-27-2014 |
20150022429 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device is disclosed. In one aspect, the display device includes a display panel including a plurality of pixels, and a data driver including a plurality of data output unit buffers electrically connected to a plurality of data lines electrically connected to the pixels. Each of the data output unit buffers includes an output terminal, a first transistor for applying a high level data voltage to the output terminal, and a second transistor for applying a low level data voltage to the output terminal. Each of the data output unit buffers also includes a first switch electrically connecting the first and second transistors to the output terminal, and a second switch electrically connecting a ground voltage to the output terminal. | 01-22-2015 |
20150042630 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - An organic light emitting display device includes pixels, a data driver, a scan driver, a control line driver and a temperature estimating unit. The pixels are respectively disposed at intersection portions of data lines, scan lines, sensing control lines and emission control lines. The data driver supplies data signals to the data lines. The scan driver progressively supplies a scan signal to the scan lines. The control line driver progressively supplies a sensing control signal to the sensing control lines during a temperature sensing period, and progressively supplies an emission control signal to the emission control lines during a normal driving period. The temperature estimating unit estimates temperatures of the pixels according to the amplitudes of currents supplied from the pixels through data lines during the temperature sensing period. | 02-12-2015 |
Patent application number | Description | Published |
20090140661 | Organic electroluminescence display and driving method thereof - An organic electroluminescence display device is disclosed. The display comprises pixels which emit light according to data signals by controlling current from a pixel power supply through an organic light emitting diode, and to a ground power supply. In order to eliminate an initial glare, the pixel power supply is gradually provided to the pixels, and after a delay, the ground power supply is then gradually provided to the pixels. | 06-04-2009 |
20090218937 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display having an improved image quality. The organic light emitting display includes a data driver for supplying a data signal to data lines; a scan driver for supplying a scan signal to scan lines; pixels at crossing regions between the data lines and the scan lines; a power source unit for generating a first power; a first voltage divider for dividing the first power to generate a first reference power; a second voltage divider for dividing a power from an external power source to generate a second reference power; and a switch to transmit one of the first reference power or the second reference power to the data driver. Each of the pixels includes an organic light emitting diode that emits light when a current flows from the first power to the second power. | 09-03-2009 |
20090219236 | Organic light emitting display device and method of driving the same - An organic light emitting display device is disclosed. The device has a drive circuit which generates a reference clock to be used for synchronizing data signals supplied to the pixels. The reference clock is based on the frame frequency. As a result, the display will provide images of consistent quality which do not vary with input data frequency. | 09-03-2009 |
20090219265 | Organic light emitting display device and method for driving the same - An organic light emitting display device having low power consumption is disclosed. Power in the device is saved by precharging data lines if the data of the current frame has a higher voltage than the data of the previous frame. Accordingly, if the data lines are precharged the data line driving buffer does not need to use as much power. | 09-03-2009 |
20100033514 | DRIVER IC AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - An organic light emitting display device includes: a display unit for displaying an image corresponding to data signals, scan signals, a first power, and a second power; a gamma correction unit for generating a gray level voltage corresponding to each gray level in accordance with a reference voltage; a voltage generator for generating the reference voltage; a data driver for generating the data signals by utilizing an image signal and the gray level voltages, and for transmitting the data signals to the display unit; a scan driver for generating the scan signals and transmitting the scan signals to the display unit; and a power supply unit for generating the first power and second power and for transmitting the powers to the display unit, wherein the reference voltage is a first reference voltage corresponding to an input power from the outside or a second reference voltage corresponding to the first power. | 02-11-2010 |
20140316760 | METHOD OF THREE-DIMENSIONAL OPTOELECTRICAL SIMULATION OF IMAGE SENSOR - A three-dimensional optoelectrical simulation includes generating a process simulation result including a doping profile of a silicon substrate of image sensor, a structure simulation result with respect to a back end of line structure, and a merged result generated by merging a process simulation result and a structure simulation result, selectively extending the merged result to an extended result by using a process simulation result or a structure simulation result, generating a segmented result for each pixel based on a merged result or an extended result, an optical crosstalk simulation result of image sensor based on a structure simulation result and an optical mesh, and a final simulation result including an electrical crosstalk simulation result of the image sensor based on a segmented result for each pixel and an optical crosstalk simulation result. | 10-23-2014 |