Patent ID: 7846817

Claim:
A method for manufacturing a semiconductor device comprising: forming a silicon oxide film over a single crystal semiconductor substrate and a silicon nitride film over the silicon oxide film; irradiating the single crystal semiconductor substrate with at least one of hydrogen and a rare gas element to form a separation layer which is formed at a certain depth from a surface of the single semiconductor substrate, and a single crystal semiconductor film over the separation layer; selectively etching the silicon oxide film and the silicon nitride film to form a plurality of silicon oxide layers and a plurality of silicon nitride layers; after selectively etching the single crystal semiconductor substrate by using the plurality of silicon nitride layers as masks to form a plurality of separation layers and a plurality of single crystal semiconductor layers, removing the plurality of silicon nitride layers; bonding a substrate having an insulating surface and the single crystal semiconductor substrate with each other; and separating the single crystal semiconductor substrate and the plurality of single crystal semiconductor layers from each other so as to provide the plurality of single crystal semiconductor layers over the insulating surface of the substrate.