Patent ID: 6416647
Filing Date: 2002-07-09
Classification: C25D,H01L

Abstract:
An apparatus for electroplating a met al onto a substrate having a substrate plating surface, comprising:a rotatable substrate support member having means for holding and rotating the substrate with the substrate plating surface facing upward during an electroplating process; a cathode clamp ring disposed in electrical contact with the substrate plating surface; an anode disposed above the substrate support member, an electroplating solution inlet supplying an electroplating solution fluidly connecting the anode and the substrate plating surface; a power source connected to the anode and the cathode clamp ring, wherein an electrical contact to the cathode clamp ring is isolated from a region between the substrate support member and the anode, a cavity ring disposed below the electroplating solution inlet, the cavity ring and the anode defining a cavity for holding the electroplating solution; and an actuator connected to the cavity ring to move the cavity ring about a substantially horizontal plane.