Patent ID: 7379081

Claim:
An organic light emitting diode (OLED) display comprising: a plurality of pixels formed on a substrate, wherein each pixel comprises a subpixel of a first color, a subpixel of a second color, and a subpixel of a third color; a first reference voltage generator formed on the substrate, which generates a plurality of first reference voltages comprising a first highest reference voltage, and a first lowest reference voltage, wherein the plurality of first reference voltages corresponds to a subpixel of the first color; a second reference voltage generator formed on the substrate, which generates a plurality of second reference voltages comprising a second highest reference voltage and a second lowest reference voltage, wherein the plurality of second reference voltages corresponds to a subpixel of the second color; a third reference voltage generator formed on the substrate, which generates a plurality of third reference voltages comprising a third highest reference voltage and a third lowest reference voltage, wherein the plurality of third reference voltages corresponds to a subpixel of the third color; and a data driver formed on the substrate, wherein the data driver is configured to: convert digital video signals corresponding to the subpixels of the first, second, and third colors into data voltages based on the first, second, and third reference voltages, respectively, and transmit the data voltages to the subpixels of the first, second, and third colors, respectively.