Patent ID: 7799620

Claim:
A method for manufacturing a semiconductor device comprising: forming an ion-doped layer at a predetermined depth from a surface of a single-crystal semiconductor substrate and forming a first insulating layer over the single-crystal semiconductor substrate; forming a second insulating layer over a first region of an insulating substrate and forming a non-single-crystal semiconductor layer over the second insulating layer; bonding the single-crystal semiconductor substrate to a second region of the insulating substrate where the second insulating layer is not formed, with the first insulating layer interposed therebetween, after forming the non-single-crystal semiconductor layer; forming a single-crystal semiconductor layer over the insulating substrate by separating a portion of the single-crystal semiconductor substrate at the ion-doped layer from the insulating substrate; and patterning the non-single-crystal semiconductor layer and the single-crystal semiconductor layer at the same time.