Patent ID: 8288184

Claim:
A production method of a semiconductor device including a semiconductor chip on a substrate with an insulating surface, the semiconductor chip having a conductive pattern film, the production method comprising the following successive steps: a first insulating pattern film-forming step of forming a first insulating film on a semiconductor substrate and on a conductive pattern film formed on the semiconductor substrate and reducing a thickness of the first insulating film in a region where the conductive pattern film is arranged by patterning; a flattening film-forming step of forming a second insulating film and polishing the second insulating film, thereby forming a flattening film; a cleavage layer-forming step of implanting a substance for cleavage into the semiconductor substrate through the flattening film, thereby forming a cleavage layer; an attachment step of attaching the flattening film of the semiconductor substrate to a substrate with an insulating surface, thereby completing the attachment step between the two substrates; and a separation step of separating the semiconductor substrate from the cleavage layer.