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Jung-Keun Ahn

Jung-Keun Ahn, Yongin-City KR

Patent application numberDescriptionPublished
20100007674ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - In an organic light emitting display, a gamma can be applied according to color regardless of the sequence of data output from a data driver, even if a separate gamma by color is used. A method for driving the organic light emitting display is also provided.01-14-2010
20100097302ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes a display unit including a plurality of pixels coupled to scan lines and data lines, a data driver for applying data signals to the data lines, a black data inserting unit between the display unit and the data driver for applying black data to the display unit, the black data being applied between periods in which the data signals are applied, and a timing controller for controlling the data driver and the black data inserting unit.04-22-2010
20110043505Power supply device, display device including the power supply device, and driving method using the same - The described technology relates generally to a power supply, a display device including the same, and a driving method thereof to reduce power consumption of the display device. Embodiments include a power source voltage controller sensing a panel current flowing in the display panel and controlling a feedback voltage according to the panel current and the power source voltage, and a DC-DC converter generating a power source voltage according to the feedback voltage to respectively supply it to the plurality of light emitting elements.02-24-2011
20110050669Display device and driving method thereof - A driving method of a display device that includes a display panel including a plurality of light emitting elements, is supplied with a power source voltage, and includes a saturation region and a non-saturation region according to variation of a panel current flowing to the display panel is provided. The driving method includes sensing the panel current, determining the power source voltage and the panel current, controlling a feedback voltage to drive the power source voltage to be equal to a saturation voltage corresponding to a saturation point at a boundary between the saturation region and the non-saturation region based on the determined power source voltage and the determined panel current, and controlling the power source voltage according to the feedback voltage to supply the controlled power source voltage to each of the plurality of light emitting elements.03-03-2011

Jung-Keun Ahn, Suwon-Si KR

Patent application numberDescriptionPublished
20080265772Composition for forming electrodes and plasma display panel manufactured with the same - An electrode composition includes a metal in an amount of about 52% to about 62% by weight of the composition, a glass insulation material in an amount of about 5% to about 7% by weight of the composition, a coloring agent in an amount of about 3% to about 9% by weight of the composition, and a vehicle.10-30-2008
20080303438Plasma display panel - Provided is a plasma display panel (PDP). The PDP includes first and second substrates which face each other with a predetermined gap, barrier ribs which are disposed between the first and second substrates and define discharge cells, discharge electrodes which are disposed between the first and second substrates and have different widths, phosphor layers which are formed in the discharge cells, and colored layers which colors the phosphor layers of the discharge cells. Specifically, a red colored layer colors the red phosphor layer and a blue colored layer colors the blue phosphor layers, while the green phosphor layers are not colored.12-11-2008
20090256784INVERTER AND DISPLAY DEVICE INCLUDING THE SAME - An inverter includes a first PMOS transistor having a gate electrode coupled to a first input port, a first electrode coupled to a first node and a second electrode coupled to the gate electrode or a second power source; a second PMOS transistor having a gate electrode coupled to the first input port, and first and second electrodes coupled respectively to a first power source and an output port; a third PMOS transistor having a gate electrode coupled to the first node, first and second electrodes coupled respectively to the output port and a second input port; and a capacitor coupled between the first node and the output port.10-15-2009
20100110050Organic light emitting display device - An organic light emitting display device comprising: a data driver supplying data signals to data output lines; a scan driver supplying scan signals sequentially to scan output lines; a light emitting control line driver supplying light emitting control signals to light emitting control output lines; and a pixel unit including a plurality of pixels connected to the output lines of each driver, at least one driver having a buffer circuit disposed at each output line. Each buffer circuit comprises a transistor having a gate layer, source and drain layers and a metal layer for shielding Electro-Static Discharge (ESD), wherein the metal layer is formed over the gate layer when the gate layer is overlapped by one of the source or a drain electrodes, or the metal layer is formed to not overlap the gate layer when the gate layer is not overlapped by the source or a drain electrodes.05-06-2010
20100188375ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A light emitting display is configured to reduce or prevent motion blur by shortening a time that a black frame is displayed between image frames. One embodiment includes display region, a data driver, a scan driver, and a controller. The display region displays frames of images according to a data signal and a scan signal. The data driver transmits data for displaying first frames and second (black) frames between the first frames. The scan driver includes first and second scan driving circuits for transmitting scan signals, and a switch unit for selectively coupling the first and second scan driving circuits. The scan driver transmits scan signals sequentially during the first frames and transmits scan signals to at least two of the scan lines concurrently by driving the first and second scan driving circuits in parallel during the second frames. The controller transmits a driving control signal to control the switch.07-29-2010

Patent applications by Jung-Keun Ahn, Suwon-Si KR