Patent ID: 7479972

Claim:
A display device of multiple gray levels corresponding to a predetermined number of bits of video data, the display device presenting an image based on a field period comprising a predetermined number of sub-field periods of an equal duration, comprising: a plurality of pixels arranged in a matrix form; a pulse signal generation circuit that outputs, for light emission, pulse signals of a predetermined number that is equal to the predetermined number of bits of video data, each of the pulse signals having a respective duration that is equal to or less than the equal duration of the sub-field periods; and a pulse signal selection circuit that selects one of the pulse signals for each of the sub-field periods and supplies the selected pulse signal to a corresponding pixel, wherein the durations of the pulse signals correspond to the bits of the video signal so that at least one of the pulse signals has a duration less than the equal duration of the sub-field periods and at least three pulse signals have different durations.