Gamma voltage generating module and liquid crystal panel

摘要

A Gamma voltage generating module for supplying a liquid crystal panel having a plurality of pixel units, each including comprising a main pixel region M and a sub pixel region S. The Gamma voltage generating modules have a reference voltage unit source to a first divider resistance string 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 forming Gamma voltages corresponding to 0-255 gray scales, and supplying the Gamma voltages to the sub pixel region S. 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. Also discloses a liquid crystal panel comprising the above Gamma voltage generating module.

主权项

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.