Patent ID: 8506770

Claim:
A pad for an electrochemical planarization tool, the pad comprising: a patterned pad surface that is adapted to be positioned against a substrate surface to be treated, said patterned pad surface comprising a plurality of first electrically conductive protruding surface areas and a plurality of second electrically conductive protruding surface areas; a plurality of first electrolyte flow channels formed in said patterned pad surface, wherein each of said plurality of first electrolyte flow channels is laterally delineated by a respective one of said plurality of first electrically conductive protruding surface areas and at least some of said plurality of first electrolyte flow channels extend from proximate a center of said patterned pad surface and terminate at an edge of said patterned pad surface; and a plurality of second electrolyte flow channels formed in said patterned pad surface, wherein each of said plurality of second electrolyte flow channels is defined by at least one of said plurality of second electrically conductive protruding surface areas, at least some of said plurality of second electrolyte flow channels are fluidly connected to at least one of said plurality of first electrolyte flow channels, and at least some of said plurality of second electrically conductive protruding surface areas are connected to at least one of said plurality of first electrically conductive protruding surface areas.