Patent ID: 7282124
Filing Date: 2007-10-16
Classification: B23H,C25D,C25F,H01L

Abstract:
1. A pad assembly comprising: a pad support having a top surface, the top surface of the pad support comprising a first electrode configured to have a first polarity; a pad having a top surface and a bottom surface, the top surface of the pad configured to polish material from a surface of a semiconductor workpiece, the bottom surface of the pad mounted over the top surface of the pad support, the pad including at least one channel exposing at least a portion of the first electrode; and at least one contact integrated with the pad, the at least one contact being a second electrode configured to have a second polarity, the second polarity opposite to the first polarity, wherein the pad assembly is configured such that during relative motion between the pad assembly and the workpiece, the at least one contact experiences the same relative motion as the pad and the pad support.