Patent ID: 8184077

Claim:
A liquid crystal display device, comprising: a liquid crystal panel having a plurality of gate lines and data lines crossing each other, and having red (R), green (G) and blue (B) pixels arranged in a matrix pattern; a light source transmitting light through the R, G, and B pixels creating red, green, and blue colors respectively; a gate driving unit for applying scan signals to the gate lines; a lookup table for storing gray scale values of image information including R, G and B data, where a gray scale value of a gray level of the B data that is lower than a gray level at which a color saturation is reduced, is stored as a gray scale value of gray levels that are higher than the gray level at which the color saturation is reduced, wherein the lookup table includes a same initial gray scale value of at least one of the R and G data for all gray levels prior to a gray level at which the color saturation is reduced and the lookup table includes different gray scale values of the R and G data to mix with the B gray scale values from a gray level at which the color saturation is reduced to an uppermost gray level; a data processing unit for compensating image information according to the gray scale values in the lookup table; and a data driving unit for receiving the compensated image information and applying the compensated image information to the data lines.