Patent ID: 7566633

Claim:
A method for manufacturing a semiconductor device, comprising the steps of: forming a separation layer over a first substrate; forming a first insulating film over the separation layer; forming a thin film transistor over the first insulating film; forming a second insulating film to cover the thin film transistor; forming a conductive film which is electrically connected to the thin film transistor over the second insulating film; forming a third insulating film to cover the second insulating film and the conductive film; selectively forming a first opening in the second insulating film and the third insulating film; providing the first opening with a material having a lower elastic modulus than those of the second insulating film and the third insulating film; exposing the separation layer selectively by forming a second opening in the first insulating film, the second insulating film, and the third insulating film; separating the separation layer and the first substrate from the first insulating film by attaching a film having an adhesive surface to a surface of the third insulating film; and fixing the first insulating film to a second substrate.