Patent ID: 7420532

Claim:
A flat display apparatus having a display unit and driving circuits formed integrally on a substrate, said display unit having pixels laid out in a matrix, said driving circuits driving the pixels of said display unit, said flat display apparatus comprising: a first gradation setting circuit which, as part of said driving circuits, is disposed along one side of said display unit and which sets gradations of the pixels for a green color; and a second gradation setting circuit which, as part of said driving circuits, is disposed along another side of said display unit and which sets gradations of the pixels for red and blue colors, said another side being positioned opposite to said one side; wherein said first and said second gradation setting circuits each include a plurality of series circuits corresponding to said gradations, each of said series circuits being formed by switching circuits turned on and off depending on logical values of bits making up gradation data for designating said gradations, said first and said second gradation setting circuits setting the gradations for said pixels by causing said series circuits to select reference voltages corresponding to said gradations on the basis of said gradation data; wherein, in said first gradation setting circuit, pairs of series circuits each disposed along said one side constitute units arranged perpendicular to said one side in such a manner as to form blocks which correspond each to one of said pixels and which are positioned along said one side; and wherein, in said second gradation setting circuit, said series circuits are disposed perpendicular to said one side in such a manner as to form blocks which correspond each to one of said pixels and which are arranged along said one side.