Patent ID: 8890779
Filing Date: 2014-11-18
Classification: G09G

Abstract:
1. An organic light emitting display comprising: a display unit spatially divided into a plurality of shared cathode electrodes each shared as a cathode electrode by each of a different plurality of organic light emitting diodes and configured to receive a respective one of a corresponding plurality of different second powers from a respective one of a corresponding plurality of second output terminals, the display unit being configured to display an image in response to data signals and scan signals; a data driver configured to generate the data signals from image signals, and to supply the generated data signals to the display unit; a scan driver for supplying the scan signals to the display unit; a power supply comprising a first output terminal for outputting a first power to the display unit, and the plurality of second output terminals for concurrently outputting respective ones of the corresponding plurality of different second powers to respective ones of the shared cathode electrodes; and a driving voltage calculator for calculating respective different voltages of the corresponding plurality of different second powers for the respective ones of the shared cathode electrodes based on magnitudes of respective ones of the data signals.