Patent ID: 8445962

Claim:
A semiconductor device comprising: a transistor comprising: a semiconductor film; a gate insulating film adjacent to the semiconductor film; and a gate adjacent to the semiconductor film with the gate insulating film interposed therebetween; a first wiring electrically connected to the semiconductor film; a first insulating film over the transistor and the first wiring, the first insulating film including a first opening over the first wiring; a color filter over the first insulating film, the color filter including a second opening over the first opening; a second insulating film over the color filter, the second insulating film including a third opening over the first opening; and a pixel electrode over the second insulating film, the pixel electrode being in contact with the first wiring through the first to third openings, wherein the first insulating film is interposed between the first wiring and the color filter so that the first wiring is not in contact with the color filter in the first to third openings, wherein a portion where the pixel electrode is in contact with the first wiring is provided over a first region and a second region, wherein the first region and the second region each include a semiconductor, and wherein an impurity concentration of the first region is higher than that of the second region.