Patent ID: 7271043
Filing Date: 2007-09-18
Classification: H01L

Abstract:
1. A method of forming a semiconductor substrate comprising: providing a layered structure comprising a first substrate and a multiple orientation surface layer located over the first substrate, said multiple orientation surface layer comprising a first region and a second region, said first region including a first strained semiconducting layer separated from a layer of a first lattice dimension material by a regrown portion of said first lattice dimension material, said second region comprising a second strained semiconducting layer atop a second lattice dimension material and separated from said layer of said first lattice dimension material and said first region by a dielectric material; forming an insulating material on said multiple orientation surface layer; bonding a second substrate to said insulating material; and removing said first substrate, said layer of said first lattice dimension material, said regrown portion of said first lattice dimension material, said second lattice dimension material in said second region, and a portion of said dielectric material to expose a surface of said first strained layer and said second strained layer, wherein said first strained semiconducting layer has a crystallographic orientation and a stress different from said second strained semiconducting layer.