Patent ID: 8853054

Claim:
A method of preparing a multilayer semiconductor structure, the method comprising the following steps in order: (a) forming a first dielectric layer on a front surface of a semiconductor device substrate, the semiconductor device substrate comprising two major, generally parallel surfaces, one of which is the front surface of the semiconductor device substrate and the other of which is a back surface of the semiconductor device substrate, a circumferential edge joining the front and back surfaces of the semiconductor device substrate, and a central plane between the front and back surfaces of the semiconductor device substrate; (b) bonding the front surface of the semiconductor device substrate having the first dielectric layer to a front surface of a handle substrate to thereby form a bonded structure, wherein the handle substrate comprises two major, generally parallel surfaces, one of which is the front surface of the handle substrate and the other of which is a back surface of the handle substrate, a circumferential edge joining the front and back surfaces of the handle substrate, and a central plane between the front and back surfaces of the handle substrate; (c) forming a second dielectric layer on the back surface of the handle substrate ; and (d) thinning the semiconductor device substrate.