Display device

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
• the pulse signal selection circuit comprises a plurality of delay flip flops that output a plurality of pulse selection timing signals based on a sub-horizontal period clock that is a horizontal period clock corresponding to the sub-field periods by delaying a sub-field period signal that has the duration of the sub-field periods, and a plurality of selector circuits that select and output the pulse signals in response to the pulse selection timing signals.

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
• the pulse signal selection circuit comprises a selector circuit provided for each row of the matrix form and configured to receive only two of the pulse signals at a time for the selection of the pulse signal supplied to the pixel.

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 the predetermined number of bits of video data minus one, 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.