Patent ID: 8048283
Filing Date: 2011-11-01
Classification: C25D,H01L

Abstract:
1. A method for electroplating a semiconductor wafer, comprising: applying a first electrode to a wafer at a first location; traversing an anode over an upper surface of the wafer from a second location toward the first location, the second location being opposed to the first location relative to a centerline extending across the upper surface of the wafer; establishing a meniscus of electroplating solution between the anode and the upper surface of the wafer, whereby an electrical current flows through the meniscus between the anode and the first electrode to electroplate a material on the wafer; applying a second electrode to the wafer at the second location when the anode has traversed the upper surface of the wafer a sufficient distance from the second location, whereby the electrical current flows through the meniscus between the anode and the second electrode to electroplate the material on the wafer; removing the first electrode from the wafer after applying the second electrode; and completing traversal of the anode over the upper surface of the wafer.