Patent ID: 6171513
Filing Date: 2001-01-09
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; anda wafer carrier having a first portion for mounting the first portion of said wafer backing film thereon and a second portion for mounting the second portion of said wafer backing film thereon, the second portion of the wafer carrier having an annular shape and surrounding the first portion of the wafer carrier,wherein the second portion of the wafer carrier is adjustable with respect to the first portion of the wafer carrier in a vertical direction.