Patent ID: 6736945
Filing Date: 2004-05-18
Classification: C25D,H01L

Abstract:
A wafer plating apparatus comprising:a wafer support member having a wafer clamp for holding a wafer with the wafer surface to be plated facing down, and having a wafer support portion which has an L-shaped cross-section and which is capable of supporting the surface to be plated over its entire peripheral edge; and a plating tank in which a plating solution is circulated while the plating solution is made to overflow from an upper opening, said wafer plating apparatus performing plating, while the wafer surface to be plated is laid face down, being maintained in contact with the surface of the plating solution, and while the wafer is rotated, in a state in which the wafer is clamped by the wafer clamp and the wafer support member, wherein the wafer support member has a spiral groove for discharging air remaining on the peripheral edge of the surface to be plated while the surface of the plating solution and the wafer are in contact with each other, the spiral groove being formed on the inner peripheral surface side of the wafer support portion.