Patent ID: 6357071
Filing Date: 2002-03-19
Classification: B08B,B24B,H01L,Y10S

Abstract:
An apparatus for cleaning an edge of a wafer comprising:a belt having an inner surface and an outer surface; a first roller having an outer surface and a first axis of rotation, said outer surface of said first roller engaging said inner surface of said belt; a second roller having an outer surface and a second axis of rotation, said outer surface of said second roller engaging said inner surface of said belt, said second axis of rotation being fixed in relationship to said first axis of rotation; a rotation mechanism to rotate said wafer about a third axis of rotation, said third axis of rotation being not parallel to either of said first or said second axes of rotation; a motor coupled to said second roller for rotating said belt about said first and second rollers; and a positioning mechanism to position said belt against said edge, wherein said first and second axes of rotation are oblique to said third axis of rotation.