Patent ID: 9129557
Filing Date: 2015-09-08
Classification: G09G

Abstract:
1. An organic light emitting diodes (OLED) display having differently composed OLEDs with respective different voltage-to-current characteristic curves, the display comprising: a display unit including a plurality of data lines, a plurality of scan lines, a plurality of first subpixels having respective first OLEDs for emitting first colored lights in accordance with first image data representing a first color component of a multicolored image, a plurality of second subpixels having respective second OLEDs for emitting second colored lights in accordance with second image data representing a second color component of the multicolored image, and a plurality of third subpixels having respective third OLEDs for emitting third colored lights in accordance with third image data representing a third color component of the multicolored image, the first, second and third color, component being different from one another, wherein the plurality of first, second, and third subpixels are connected to corresponding ones of the data lines and of the scan lines; a scan driver configured for supplying a plurality of scan signals to the plurality of scan lines; a data driver configured for generating a plurality of data signals corresponding to the first to third image data and supplying a plurality of data line signals to respective ones of the plurality of data lines; a power supply unit configured for applying a first driving voltage to the plurality of first and second subpixels and for separately applying a second driving voltage of independently controlled magnitude to the plurality of third subpixels; and a power source controller configured to extract for each to be displayed image frame, each maximum grayscale value of the first to third image data and configured to variably control the first and second driving voltages according to the extracted maximum grayscale values, wherein the third OLEDs are differently composed than either of the first and second OLEDs and the third OLEDs have a different voltage-to-current characteristic curve than those of the first and second OLEDs.