Patent ID: 7884813
Filing Date: 2011-02-08
Classification: G09G

Abstract:
1. A self-luminescent display panel provided with a plurality of luminescent elements that are arranged at intersection positions of a plurality of data lines and a plurality of scanning lines, comprising: one frame period, which is time-divided into an even numbered minor frame and an odd numbered minor frame, said even numbered minor frame and said odd numbered minor frame containing N subframe periods wherein N is a positive integer, and a gradation display by a simple subframe method is set by an accumulated sum of one or plural lighting control periods, said panel being provided with a first gradation controller for lighting subframe periods for performing, with a plurality of pixels adjacent to each other being treated as one set, a dither processing for each subframe set by set, wherein when the gradation changes from (a−1) to (a), a plurality of kinds of arrangement patterns of dither coefficients are set in accordance with the number of newly lit subframes whereby the dither coefficients added in the same pixel for each subframe are made different from each other, and, in a plurality of pixels constituting a set on which said dither processing is performed, accumulated sums of the dither coefficient values added to a same pixel for each subframe are equal to each other among said plurality of pixels in a plurality of subframe units that are newly lit when the brightness level changes from (a−1) to (a), wherein an additional two subframe periods are lit in each of the even and odd numbered minor frames when the gradation level increases from (a−2) to (a), wherein the number of lit subframe periods in said even number minor frame is the same, between two consecutive gradations, wherein the number of lit subframe periods in said odd number minor frame is the same, between two consecutive gradations, wherein the number of lit subframe periods for a given gradation level is shifted by one with respect to the even and odd numbered minor frames, and wherein alternate dither masks are used with respect to sequentially lit subframe periods in both the even and odd minor frames.