Patent ID: 8193076
Filing Date: 2012-06-05
Classification: H01L,Y10T

Abstract:
1. A method for forming a thin semiconductor substrate by releasing it from a semiconductor template through the use of a mechanically weak layer, comprising the steps of: forming a mechanically weak layer on a semiconductor template, said mechanically weak layer formed substantially conformal to said semiconductor template; forming a thin semiconductor substrate on said mechanically weak layer, said thin semiconductor substrate conformal to said mechanically weak layer, said mechanically weak layer and said template forming a wafer, said thin-film semiconductor substrate having surface features in contact with said mechanically weak layer; defining the border of said thin-film semiconductor substrate to be released by exposing the peripheral of said mechanically weak layer; and releasing said thin-film semiconductor substrate by applying a controlled air flow parallel to said mechanically weak layer wherein said controlled air flow separates said thin semiconductor substrate and said template according to lifting forces.