Patent ID: 7727836

Claim:
A method of manufacturing a semiconductor device comprising: forming a first conductive film and a second conductive film from a same conductive film over a substrate; forming a first insulating film over the first conductive film and the second conductive film; etching a portion of the first insulating film to form opening over the second conductive film; forming a second insulating film over the first insulating film and in the opening over the second conductive film; forming a semiconductor film over the second insulating film; and patterning the semiconductor film to form an active layer of a thin film transistor and an upper electrode of a capacitor wherein the active layer is located over the first conductive film with the first insulating film and the second insulating film interposed therebetween, and the upper electrode of the capacitor is located over the second conductive film with the second insulating film interposed therebetween in the opening, wherein a capacitor is formed between the second conductive film and the upper electrode with the second insulating film interposed therebetween.