Patent ID: 9697776
Date: 2017-07-04
CPC Classifications: G09G

Claim:
1. An organic light emitting display device, comprising: a display panel includes a plurality of pixels including an organic light emitting devices to emit light based on data currents corresponding to data voltages; a storage area to store accumulated data of the pixels; a degradation compensator to determine degrees of degradation of the pixels based on the accumulated data, select a flat up mode or a flat down mode, select a reference pixel based on the selected mode, generate ratios of a maximum emission brightness of the reference pixel to a maximum emission brightness of the pixels as first coefficients, and generate modulated data for the pixels using the first coefficients and margin ratios; and a panel driver to transform the modulated data to the data voltages, add the modulated data to the accumulated data, and store the accumulated data in the storage area.