Patent ID: 7922881
Filing Date: 2011-04-12
Classification: H01J

Abstract:
1. A sputtering plasma reactor for plasma vapor deposition (PVD), the reactor comprising: a PVD chamber wall; a PVD target, wherein the target and the PVD chamber wall form a vacuum chamber, and wherein at least the portion of the target facing said vacuum chamber is composed of material to be sputtered; an insulating ring positioned between the target and the PVD chamber wall; a first O-ring provided to establish a vacuum seal between the target and the insulating ring; a second O-ring provided to establish a vacuum seal between the insulating ring and the PVD chamber wall; and at least one spacer positioned between the target and the insulating ring to maintain a gap between the insulating ring and the target, wherein the spacer comprises a plurality of pressure pads located around the outer circumference of the target, wherein each pressure pad is partially received in a counter bore formed in an outer flange of the target.