Patent ID: 7663586
Filing Date: 2010-02-16
Classification: G09G

Abstract:
1. A reference voltage generation circuit that generates a plurality of reference voltages to be used for gamma correction, the reference voltage generation circuit comprising: first to Jth gamma correction data registers in which gamma correction data for generating the reference voltages is set, J being an integer greater than one; and a reference voltage select circuit that selects K select voltages from first to Lth select voltages arranged in potential descending order or potential ascending order and outputs the K select voltages as first to Kth reference voltages in potential descending order or potential ascending order, based on the gamma correction data set in one of the first to Jth gamma correction data registers, L being an integer greater than two, and K being an integer greater than one and smaller than L, the first to Kth reference voltages being output as the plurality of reference voltages, the reference voltage select circuit including: the reference voltage select circuit outputting at least the first reference voltage and the second reference voltage of the first to Kth reference voltages.