Patent ID: 7025860
Filing Date: 2006-04-11
Classification: B23H,C25D,C25F,H01L

Abstract:
1. An apparatus for performing an electrochemical process on a surface of a workpiece, comprising: a first conductive element for coupling to a first potential; an insulating member disposed overlying said first conductive element; a second conductive element for coupling to a second potential, wherein said second conductive element overlies said insulating member; a substantially smooth, substantially incompressible support plate overlying said second conductive element and having a plurality of conductive regions that are electrically coupled to said first conductive element, a plurality of holes that expose said second conductive element, and a plurality of channels that are in fluid communication with said plurality of holes, wherein said support plate has a coefficient of surface friction of less than about 0.2 and a surface roughness less than about 100 micro-inches per inch; and a carrier configured to position the workpiece proximate said support plate.