Patent ID: 6380046
Filing Date: 2002-04-30
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, said method comprising the steps of:forming a porous silicon layer by anodic oxidation of a first single crystal silicon substrate; proceeding an epitaxial growth of a single crystal silicon film on the porous silicon layer; forming a silicon oxide film on the single crystal silicon film; bonding the first single crystal silicon substrate to a second substrate through the silicon oxide film, said second substrate being as a support; carrying out a first heat treatment to the first single crystal silicon substrate and the second substrate; polishing the first single crystal silicon substrate until the porous silicon layer is exposed; exposing the single crystal silicon film by removing the porous silicon layer; forming a silicon island by patterning the single crystal silicon film; and thermally oxidizing the silicon island at a temperature in a range of from 1050 to 1150Â° C.