| Patent application number | Description | Published |
|---|
| 20110007067 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display that can stably extract information from pixels. A driving method of the organic light emitting display includes: generating first digital values by sensing deterioration information of organic light emitting diodes respectively included in a plurality of pixels coupled to a data line during two or more continuous frame periods; storing the first digital values in a memory; generating second digital values by sensing threshold voltage and mobility information of driving transistors respectively included in the pixels during two or more continuous frame periods; storing the second digital values in the memory; converting input data into calibration data according to the information stored in the memory to display an image having a uniform brightness, irrespective of the deterioration information of the organic light emitting diodes and the threshold voltage and mobility information of the driving transistors; and supplying a data signal in accordance with the calibration data to the data line. | 01-13-2011 |
| 20110012819 | CURRENT GENERATOR AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A current generator for supplying or sinking current to/from pixels. The current generator includes a variable power source, a first amplifier having a first input terminal coupled to the variable power source, a sensing resistor coupled between an output terminal of the first amplifier and an external terminal of the current generator, and a second amplifier having a first input terminal and a second input terminal coupled to respective ends of the sensing resistor and an output terminal coupled to a second input terminal of the first amplifier. | 01-20-2011 |
| 20110018858 | Organic light emitting display and method of driving the same - An organic light emitting display capable of compensating for threshold voltage variations of a driving transistor may include scan and data drivers, pixels, an initial power source unit, a switching unit, a compensating unit, and a timing controller. The scan and data drivers may control current that flows from a first to a second power source via an OLED. The switching unit may selectively couple the initial power source unit to the data driver. The compensating unit may store second data corresponding to a threshold voltage of a driving transistor and may transmit the stored second data to the data driver. The timing controller may transmit the externally supplied first data input to the data driver and may control the scan driver, the data driver, and the compensating unit. The data driver may generate and supply third data signals to the pixels using the first and the second data. | 01-27-2011 |
| 20110057917 | Organic light emitting display and method of driving the same - An organic light emitting display includes a mode determining unit adapted to determine whether the display is in a low power or common driving mode based on an operation control signal and to generate a control signal corresponding to the determined mode, a scan driver adapted to sequentially supply scan signals to scan lines, a data driver adapted to supply data signals to data lines in synchronization with the scan signals, pixels arranged at intersections of the scan lines and the data lines, and a timing controller adapted to control the scan driver and the data driver so that a frame frequency changes based on whether the low power driving mode or the common driving mode control signal is supplied from the mode determining unit, wherein the scan driver is adapted to uniformly maintain a pulse width of the scan signals regardless of a change in the frame frequency. | 03-10-2011 |
| 20110063283 | Organic light emitting display and method of driving the same - A method of driving an organic light emitting display, includes extracting information on deterioration of an organic light emitting diode (OLED) and information on a threshold voltage and mobility of a driving transistor included in each of the pixels to store the information in a memory unit during a non-display period, converting input data into corrected data using the information items stored in the memory unit, and supplying data signals corresponding to the corrected data to data lines, wherein, extracting the information, includes storing the information on the deterioration of the OLED and the information on the threshold voltage and mobility of the driving transistor in a non-volatile memory, and storing the information in a volatile memory. | 03-17-2011 |
| 20110279433 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting diode display device includes a display unit including a plurality of pixels; a data driver applying data voltage to the pixels; and a power supplier including a first power source providing high-level voltage to the anode electrode of organic light emitting diodes and a second power source providing low-level voltage to the cathode electrode of the organic light emitting diodes included in the pixels, in which the power supplier provides the second power source in a sink method at positive voltage, when the threshold voltage of a driving transistor for driving the organic light emitting diodes shifts to a negative. When gate-source voltage of a driving transistor shifts to negative threshold voltage, it is possible to apply the data voltage at positive voltage and to simplify a driving IC, thereby ensuring wide use, by applying voltage of a second power source ELVSS at positive voltage. | 11-17-2011 |
| 20110279492 | ORGANIC LIGHT EMITTING DISPLAY AND CONTROL SIGNAL GENERATING CIRCUIT OF ORGANIC LIGHT EMITTING DISPLAY - A signal generating circuit generating an output signal corresponding to a controlling input, the signal generating circuit including a rising path increasing the output signal during a rising period in synchronization with a time that the controlling input is increased, and a falling path decreasing the output signal during a falling period in synchronization with a time that the controlling input is decreased, wherein the rising period and the falling period are different from each other. | 11-17-2011 |
| 20110291119 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting diode display is disclosed. The organic light emitting diode display includes a base substrate including a display area and a non-display area around the display area, a plurality of pixels formed over the display area of the base substrate, the plurality of pixels including a common electrode, a common power line formed over the base substrate and electrically connected to a circuit of each of the plurality of pixels, an encapsulation substrate bonded to the base substrate by a sealing member surrounding the plurality of pixels, the encapsulation substrate including an inner surface facing the base substrate, a first conductive layer formed over the inner surface and electrically connecting the common power line to a first potential, and a second conductive layer formed over the inner surface and spaced apart from the first conductive layer, the second conductive layer electrically connecting the common electrode to a second potential. | 12-01-2011 |
