Patent ID: 6344414
Filing Date: 2002-02-05
Classification: B24B

Abstract:
A film removal apparatus in which a film is removed from a wafer, the apparatus comprising:a wafer backing film having a first portion and a second portion composed of different materials, said wafer backing film being substantially circular in shape and the first portion and the second portion being concentric, the first portion having a circular shape at the center of said backing film and the second portion having an annular shape and surrounding the first portion; an assembly film on which the first portion of the wafer backing film and the second portion of the wafer backing film are mounted, said assembly film and said wafer backing film thereby forming an assembly for mounting on a wafer carrier; and a backing shim for vertical adjustment of the first portion of the wafer backing film with respect to the second portion of the wafer backing film, in accordance with the thickness of the backing shim.