Patent ID: 6818567
Filing Date: 2004-11-16
Classification: H01L,Y10S

Abstract:
A method for selectively oxidizing a silicon wafer, said method comprising:covering each of whole areas of both surfaces of a silicon wafer with an oxidation inhibitor film with interposition of a pad oxide film; patterning said pad oxide film and an oxidation inhibitor film on said pad oxide film on one surface of said silicon wafer to form desired patterns to partially expose the one surface of said silicon wafer through said patterns; removing said pad oxide film and said oxidation inhibitor film on said pad oxide film formed on the other surface of said silicon wafer to expose the whole area of the other surface of said silicon wafer, oxidizing regions exposed partially on the surface of said silicon wafer and the whole area of the other surface of said silicon wafer, simultaneously to grow a silicon dioxide film on both surfaces of said silicon wafer, and removing said oxidation inhibitor film overlying said pad oxide film and the underlying pad oxide film remaining on the one surface of said silicon wafer, wherein said exposed regions on the one surface of said silicon wafer and the exposed whole area on the other surface of said silicon wafer are subjected to said oxidation process by a batch type thermal oxidation furnace.