Patent ID: 6943067

Claim:
A method of forming a three-dimensional integrated semiconductor device, comprising: providing a first device member, said first device member comprising a first circuit element formed at least partially in a first semiconductor film, wherein said semiconductor film is formed as a semiconductor island surrounded by insulating material, a first contact portion, and a first planar insulating layer of dielectric material having a first free surface; providing a second device member, said second device member comprising a second circuit element formed at least partially in a second semiconductor film and a second planar insulating layer of dielectric material formed on the second semiconductor film having a second free surface; stacking said first and second device members on top of each other such that said first free surface of said first planar insulating layer faces said second free surface of said second planar insulating layer; bonding said first planar insulating layer and said second planar insulating layer together; and forming a second contact portion extending through said second device member, said second semiconductor layer, said second planar insulating layer and said first planar insulating layer to said first contact portion.