ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF

摘要

The present invention relates to an organic light emitting display device and a method to drive the same. The organic light emitting display device comprises: a power supply unit to supply a first power supply voltage and a second power supply voltage to a first and a second power supply applying lines, respectively; and a power control unit which calculates a reference power supply voltage corresponding to the maximum average gray level using the distribution of a first to a third image data for each gray level, models voltage drops of the first and second power supply voltages for first to third sub-pixels, and changes the second power supply voltage by applying the voltage drop to the reference power supply voltage.