Patent ID: 7236147

Claim:
A display device providing a gray scale display by controlling in accordance with an input video signal individual pixels on a display panel so that each pixel emits light or does not emit light in individual sub-fields that are defined by dividing one field and arranged on a time base in a prescribed order, said sub-fields being weighted to represent gray levels; wherein said plurality of sub-fields are weighted in such a way that at least one non-display gray level which cannot be displayed by combining said plurality of sub-fields is arranged between displayable gray levels by combining said plurality of sub-fields, and wherein said display device comprises, a diffuser that receives said video signal for, when said video signal represents said non-display gray level, diffusing temporally and/or spatially a difference between said non-display gray level and one of said display gray levels so that said non-display gray level can be equivalently displayed with said display gray levels; a sub-field corresponder that converts a video signal representing one field output from said diffuser into a video signal representing individual sub-fields; and an emitter that controls said pixels on said display panel so that each pixel emits light or does not emit light in said individual sub-fields, in accordance with said video signal representing said individual sub-fields output from said sub-field corresponder.