Patent ID: 6702407
Filing Date: 2004-03-09
Classification: G09G,H01L

Abstract:
A color image display device comprising:a pixel array portion including a plurality of source signal lines, a plurality of gate signal lines, a plurality of pixel electrodes provided in respective regions where the respective source signal lines and the respective gate signal lines intersect with each other, and a plurality of switching elements for driving the plurality of pixel electrodes; a source signal line driving circuit for driving the plurality of source signal lines; and a gate signal line driving circuit for driving the plurality of gate signal lines, wherein the source signal line driving circuit includes a plurality of D/A conversion circuits and a plurality of source line selecting circuits, wherein each of the D/A conversion circuits is connected to the source signal lines, in which three source signal lines corresponding to three colors of R (red), G (green) and B (blue) are made a unit and the number of which is a multiple of three, through each of the source line selecting circuits, wherein gray-scale power supply lines connected to the respective D/A conversion circuits are one system, and wherein power supply voltages corresponding to the three colors of the RGB are applied to the gray-scale power supply lines in one gate line selecting period.