Patent ID: 8111222
Filing Date: 2012-02-07
Classification: G09G

Abstract:
1. A method of improving the output uniformity of a display device comprising the acts of: charging a capacitor to a first level for operating at least one pixel to emit a first emitted brightness; detecting the first emitted brightness of the at least one pixel of the display device via an external detection system that is substantially independent of the display device; determining non-uniformity of an output of a driver circuit connected with the at least one pixel based on the first emitted brightness; generating a calibration factor for the at least one pixel based on the non-uniformity to be used to modify the output of the driver circuit to improve the output uniformity when the at least one pixel is emitting the first emitted brightness; charging the capacitor to a second level for operating the at least one pixel to emit a further emitted brightness which is different from the first emitted brightness; and repeating the acts of detecting, determining and generating for generating a further calibration factor for modifying the output of the driver circuit when the at least one pixel is emitting the further emitted brightness so that the output of the driver circuit is compensated by varying the charge on the capacitor.