Patent ID: 6686858
Filing Date: 2004-02-03
Classification: H03M

Abstract:
An active matrix device comprising:a pixel portion including a plurality of pixels, each of the plurality of pixels comprising at least a first thin film transistor formed over a substrate; a driver circuit for driving said pixel portion, said driver circuit comprising a D/A conversion circuit, said D/A conversion circuit comprising: a first power supply line; a second power supply line having a different potential from said first power supply line; an output line; a plurality of first resistors electrically connectable between said first power supply line and said output line in parallel through a plurality of first switching elements, respectively; a plurality of second resistors electrically connectable between said second power supply line and said output line in parallel through a plurality of second switching elements, respectively, wherein each of the plurality of first switching elements comprises at least a second thin film transistor provided over the substrate and each of the plurality of second switching elements comprises at least a third thin film transistor provided over the substrate.