COLOR SIGNAL CORRECTION APPARATUS, COLOR SIGNAL CORRECTION METHOD AND IMAGE DISPLAY APPARATUS, ESPECIALLY SUPPRESSING THE CHANGE OF A CHROMATICITY POINT IN A GRADATION CHARACTERISTIC OF AN ACHROMATIC COLOR

摘要

PURPOSE: A color signal correction apparatus and a color signal correction method and an image display apparatus are provided to improve display quality by suppressing balance variation of three polarity values at each gray level and also by suppressing variation of chromaticity point. CONSTITUTION: A color signal correction apparatus has an emission characteristics correction unit applying a correction processing to correct emission luminance characteristics of each color to a plurality of color signals(Ra,Ga,Ba) corresponding to each of a plurality of emitters emitting different colors respectively. Offset value determination units determine offset values(Rb,Gb) for color correction to suppress the variation of chromaticity point of a color linked to the variation of luminance level of a white color. And an offset value adding units(731,732) add the offset values to at least another color signal(Ba).