Patent ID: 9536485
Date: 2017-01-03
CPC Classifications: G09G

Claim:
1. A Gamma voltage generating module for supplying Gamma voltage to a liquid crystal panel comprising a plurality of pixel units, each of the pixel unit comprising a main pixel region M and a sub pixel region S, wherein the Gamma voltage generating module comprises: a reference voltage unit for supplying reference voltages to a divider resistance string; a first divider resistance string, coupled to the reference voltage unit, for dividing the reference voltages to form Gamma voltages corresponding to 0-255 gray scales, and supplying the Gamma voltages to the main pixel region M; and a second divider resistance string, coupled to the reference voltage unit, for dividing the reference voltages to form Gamma voltages corresponding to 0-255 gray scales, and supplying the Gamma voltages to the sub pixel region S; wherein in the first divider resistance string and the second divider resistance string, the Gamma voltage generating points at least at gray scales of 0, Gx, Gx+1 and 255 connect with the reference voltages; wherein Gx refers to a gray scale corresponding to a brightness inversion when a gray scale G of a pixel unit is converted to a combination of a gray scale Gm of the main pixel region M and a gray scale Gs of the sub pixel region S.