Patent ID: 8508440

Claim:
An organic light emitting display comprising: a scan driver for sequentially supplying a scan signal to a plurality of scan lines during each of a plurality of sub-frames included in one frame; a data driver for applying differing analog data voltages to a plurality of data lines coupled to a plurality of pixels during at least one light emitting sub-frame of the plurality of sub-frames included in the one frame, the differing analog data voltages for controlling corresponding differing luminance of the plurality of pixels, and for applying a voltage corresponding to a black gradation to the plurality of data lines during at least two non-light emitting sub-frames of the plurality of sub-frames included in the one frame to improve a uniformity of a same luminance among respective ones of the plurality of pixels of the organic light emitting display device to which a same one of the analog data voltages is being applied, and to improve a differentiation of the same luminance among the respective ones of the plurality of pixels from different luminance among all others of the plurality of pixels to which different ones of the analog data voltages are being applied; and a pixel portion comprising the plurality of pixels, the pixel portion for displaying an image according to the scan signal supplied to the plurality of scan lines and according to the differing analog data voltages and the voltage corresponding to the black gradation applied to the plurality of data lines.