Patent ID: 7817171

Claim:
A device for driving a display apparatus including a display screen which has a plurality of pixels, each of the pixels having a plurality of sub-pixels for displaying different colors in accordance with (i) whether a color filter is provided or (ii) a color of the color filter, specific one of the sub-pixels, which constitute each of the pixels, displaying a color that is able to be displayed by one or more sub-pixels other than the specific sub-pixel, the device, comprising: first generating means for generating, in accordance with an input signal indicative of a color to be displayed by each of the pixels, a signal for driving each of the sub-pixels; second generating means for generating, in accordance with an input signal indicative of a color to be displayed by each of the pixels, a signal for driving each of the sub-pixels so as to limit a luminance of the specific sub-pixel as compared to the first generating means, the input signals being identical to each other, control means for (a) dividing the display screen into small regions, (b) evaluating a relative brightness of each of the small regions in accordance with an input signal by which each of the pixels is displayed, (c) judging whether or not the display screen has a first small region that is brighter by a predetermined degree than other small regions, (d) causing the first generating means to generate a signal for driving a sub-pixel contained in the first small region, and (e) causing the second generating means to generate a signal for driving a sub-pixel contained in each of other remaining small regions.