Patent ID: 7883956
Filing Date: 2011-02-08
Classification: H01L

Abstract:
1. A method for forming coplanar active regions and isolation regions in a semiconductor structure, the method comprising: depositing a semiconductor-on-insulator (SOI) layer on a substrate; etching to remove portions of the SOI layer over the substrate, the etching including forming openings between remaining portions of the SOI layer; forming shallow trench isolation (STI) regions in the openings between the remaining portions of the SOI layer; implanting the substrate with hydrogen to form a hydrogen implanted region; bonding a silicon layer to a surface of the STI region and the SOI layer; cleaving the substrate at the hydrogen implanted region formed within the substrate; and etching all of the substrate not cleaved after the cleaving to expose at least one active region and at least one isolation region, wherein the at least one active region and the at least one isolation region are coplanar.