Patent ID: 6328808
Filing Date: 2001-12-11
Classification: C23C

Abstract:
An apparatus, comprising:shadow ring defining at least one support bore for receiving at least one resting pin and a plurality of guide pin bores for receiving a plurality of guide pins;a hanger member comprising the at least one resting pin and adapted to support the shadow ring and reset the position of the shadow ring relative to the support member when the shadow ring is supported on the hanger member;a support member comprising the plurality of guide pins; wherein the support member is movable vertically between a first position and a second position;so that, in the first position of the support member, the shadow ring is supported by the hanger member and the at least one resting pin is disposed in the at least one support bore; andso that, in the second position of the support member, the shadow ring covers an outer peripheral portion of a substrate and the plurality of guide pins are disposed in the plurality of guide pin bores.