Patent ID: 6365488
Filing Date: 2002-04-02
Classification: H01L

Abstract:
A method of forming an integrated circuit comprising:providing a photoresist mask overlying a first semiconductor substrate; implanting ions into said first semiconductor substrate where it is not covered by said photoresist mask to form implanted regions; forming a first oxide layer overlying said first semiconductor substrate whereby said implanted regions form a buried layer structure; forming a second oxide layer overlying a second semiconductor substrate; bonding said first and said second oxide layers together to form a wafer; etching back said first semiconductor substrate to form the silicon layer of a silicon-on-insulator wafer to complete formation of said silicon-on-insulator wafer having a buried layer structure; and thereafter forming semiconductor device structures in and on said silicon layer wherein at least one of said semiconductor device structures contacts said buried layer through an opening in said silicon layer to complete fabrication of said integrated circuit.