Patent ID: 6024630
Filing Date: 2000-02-15
Classification: B24B

Abstract:
An apparatus for holding a substrate during polishing, comprising:a backing member supported from a housing support member;a retaining ring assembly surrounding the backing member, the retaining ring assembly being separate from and movable relative to the backing member and separate from and movable relative to the housing support member;a first set of one or more elastic members connecting the housing support member to the retaining ring assembly, the first set of elastic members elastically urging the retaining ring assembly away from a polishing pad; anda second set of one or more elastic members connecting the housing support member to the retaining ring assembly, the second set of elastic members elastically urging the retaining ring assembly towards the polishing pad;wherein either the first or second set of elastic members is configured to increase or to decrease a magnitude of a force between the housing support member and the retaining ring assembly.