Patent ID: 6765551
Filing Date: 2004-07-20
Classification: G09G

Abstract:
A column electrode driving circuit for an image display device for selecting, from among a plurality of reference voltage levels, reference voltage levels respectively corresponding to gray scale levels in input data, and outputting the respective selected voltage levels to at least one data line, wherein the input data comprise data of a first color, a second color, and a third color, wherein:the reference voltage levels are independently selected corresponding to the gray scale levels in the input data of the first color, the second color, and the third color; among the reference voltage levels independently selected corresponding to a given gray scale level in the input data of the first color, the second color, and the third color, the reference voltage level selected corresponding to at least one color is different from the reference voltage level or levels selected corresponding to the other color or colors, the given gray scale level being within a predetermined range; and the reference voltage level selected corresponding to the given gray scale level in the input data of the at least one color is equal to a reference voltage level selected corresponding to another gray scale level in the input data of the other color or colors.