Patent ID: 8059069

Claim:
An organic light emitting diode display device, comprising: a pixel unit including a plurality of pixels connected to scan lines and data lines; a scan driver adapted to generate and supply scan signals to the scan lines; a data driver adapted to generate and supply data signals to the data lines; an optical sensor adapted to generate an optical sensor signal corresponding to an intensity of light; and a data conversion unit adapted to compare a predetermined reference value with the optical sensor signal so as to generate a selection signal for selecting one of at least three modes, the data conversion unit is adapted to store an input image data or a changed input image data to correspond with the selection signal, wherein the data driver is adapted to generate the data signals to correspond to the input image data or the changed input image data stored in the data conversion unit, wherein the data conversion unit further includes: a comparator; a control unit adapted to determine changing the input image data to correspond to the selection signal; a first operator unit adapted to generate a pixel saturation data to correspond to the input image data transmitted from the control unit; a second operator unit adapted to extract the changed input image data to correspond to the pixel saturation data and the selection signal; and a memory adapted to store the input image data transmitted from the control unit or the changed input image data supplied from the second operator unit.