Patent ID: 7075507

Claim:
A gray scale display method for providing memories that respectively store each bit of gray scale data which indicates gray shade and that cause pixels arranged in a matrix in the row direction and in the column direction to produce a gray scale display, said gray scale display method comprising the steps of: dividing one field into subfields corresponding to bits of said gray scale data; setting a period of each subfield in such a manner as to correspond to a weight of each of said bits; in each subfield and with respect to each pixel having a plurality of bit memories and a self-rewritable memory, reading, from one of the said memories, a bit corresponding to the subfield within the gray scale data corresponding to the pixel, latching the bit, producing at least one of an ON display and an OFF display according to the bit, and writing the latched bit to the one of the memories via said self-rewritable memory.