Color Liquid Crystal Display Device and Gamma Correction Method for the Same

A color liquid crystal display device employing a pixel division method in which each pixel of an image displayed in a predetermined screen is configured with a predetermined number of two or more sub-pixels obtained by spatial or temporal division of one pixel in a predetermined division ratio, the device comprising:

• a plurality of pixel formation portions provided correspondingly to respective pixels of the image, each of the portions forming a pixel of any of primary colors for color display with the predetermined number of sub-pixels;
• a drive circuit for providing each of the pixel formation portion with applied voltages respectively corresponding to the sub-pixels composing the pixel to be formed by that pixel formation portion, based on a gradation value indicated by an input signal provided from outside as a video signal representing the image;
• and
• a gamma correction part for correcting a relationship between a gradation value indicated by the input signal and a luminance value of the pixel formed by the pixel formation portion according to the gradation value independently for each of the primary colors for color display,
• wherein each of the pixel formation portions forms the pixel by displaying the predetermined number of sub-pixels with luminance values different from one another based on the applied voltages, and
• wherein the gamma correction part corrects the relationship such that gradation dependence of chromaticity is suppressed when the screen is viewed from a front thereof, and also corrects the relationship in the vicinity of a predetermined gradation value, which is determined by the division ratio in the one pixel and differences in the applied voltage among the predetermined number of sub-pixels, such that the gradation dependence of the chromaticity is suppressed when the screen is viewed from a predetermined oblique direction.