Patent ID: 7695597

Claim:
A conductive planarization assembly for use in electrochemical mechanical planarization, the conductive planarization assembly comprising: a first insulating member; a second insulating member overlying said first insulating member and having a plurality of first holes; and a conductive member interposed between said first insulating member and said second insulating member and electrically coupled to an external circuit, wherein said conductive member comprises a non-conductive layer, a first conductive sub-layer disposed on said non-conductive layer and formed of a first conductive material, and a plurality of electrode regions disposed on said first conductive sub-layer and formed of a second conductive material having a composition different from said first conductive material, said plurality of electrode regions exposed by said plurality of first holes, wherein said second insulating member and said conductive member each comprise a second hole and wherein said second holes are coaxial and are configured to receive a conductive contact and permit the conductive contact to extend through said second holes and make physical contact with a surface to be planarized.