Patent ID: 7678226
Filing Date: 2010-03-16
Classification: H01J,H01L

Abstract:
1. A bellows shield for protecting a bellows on a substrate holder of a plasma processing system, comprising: a cylindrical wall comprising an inner surface, an outer surface, a first end, and a second end; wherein said first end comprises an attachment flange, said attachment flange comprising: wherein said attachment flange further comprises a plurality of fastening receptors coupled to said interior surface and said second exterior surface of said attachment flange and configured to receive fastening devices in order to couple said bellows shield to said substrate holder; and wherein said second end of said cylindrical wall comprises an end surface; and a protective barrier provided on a plurality of exposed surfaces of said bellows shield, wherein said exposed surfaces comprise said end surface of said second end, said outer surface of said cylindrical wall, and said exterior surface of said attachment flange of said first end, and said protective barrier is a coating which comprises yttrium or dysprosium and wherein at least a portion of said inner surface includes an anodization layer thereon and does not include said protective barrier thereon, and wherein at least a portion of said mating surface does not include an anodization layer thereon and does not include said protective barrier thereon.