Patent ID: 8159509
Filing Date: 2012-04-17
Classification: G09G

Abstract:
1. A method of controlling a color display device comprising a display screen having a plurality of pixels arranged in an array, each of the plurality of pixels including primary color sub-pixels for reproducing at least respective, three primary colors and at least one subsidiary color sub-pixel for reproducing a color different from the primary colors to increase a number of gradation levels of the primary colors of the primary color sub-pixels, comprising the steps of: inputting into a processor or generating by the processor an original luminance signal and original color-difference signals determined from an original image which is desired to be displayed on the screen; generating a primary color data signal for each of the primary color sub-pixels on a basis of the original luminance signal and original color-difference signals by the processor to output the primary color data signal to a timing controller together with the original luminance signal, the primary color data signal indicating a voltage to be applied to the primary color sub-pixel; and generating by the timing controller a subsidiary color data signal on the basis of the original luminance signal to output the subsidiary color data signal to a source driver of the screen together with the primary color data signals, the subsidiary color data signal indicating a voltage to be applied to the subsidiary color sub-pixel of the pixel having the primary color sub-pixel for which the primary color data signal is generated.