Patent ID: 7432886

Claim:
An organic electroluminescent display device comprising: an organic electroluminescent panel comprising a plurality of data lines for transferring a data voltage corresponding to digital image data, a plurality of scan lines for transferring a scanning signal, and a plurality of pixel circuits defined by the data lines and the scan lines, each of the pixel circuits having an organic electroluminescent device and a driving transistor for driving the organic electroluminescent device; a scan driver for selectively applying the scanning signal to the scan lines; and a data driver for receiving the digital image data and applying the data voltage corresponding to the digital image data to the data lines, the data driver comprising a voltage divider including a plurality of resistances connected in series between a source voltage and a reference voltage, the data voltage for a pixel circuit selected from among contact voltages formed between the resistances, wherein the data driver adjusts a magnitude of the data voltage by adjusting a magnitude of the reference voltage in accordance with a location of a corresponding one of the pixel circuits to compensate for a voltage change between a gate and a source of the driving transistor, the voltage change being caused by a voltage drop along a power source line for providing a driving current to the driving transistor.