Patent ID: 7759629

Claim:
A method for manufacturing a semiconductor device, comprising the steps of: forming a first insulating layer over a substrate; forming a metal layer over the first insulating layer; forming a release layer by oxidizing a surface of the metal layer; exposing the first insulating layer by forming an opening portion in the metal layer and the release layer; forming a second insulating layer over the opening portion and the release layer; forming a photoelectric conversion element over the second insulating layer, wherein the photoelectric conversion element overlaps the metal layer; forming an amplifier circuit, which is configured to amplify an output current of the photoelectric conversion element, wherein the amplifier circuit comprises a thin film transistor formed in the opening portion so that the amplifier circuit does not overlap the release layer; forming a protective layer over the photoelectric conversion element and the amplifier circuit; and separating the photoelectric conversion element and the amplifier circuit, together with the second insulating layer from the substrate using the release layer.