Patent ID: 8512540
Filing Date: 2013-08-20
Classification: C25D,H01L

Abstract:
1. A plating process comprising a first step of connecting a film-formation surface of a wafer to a cathode electrode, inclining the wafer to the surface of a plating solution and immersing the wafer into the plating solution with applying a first current between the cathode electrode and an anode electrode placed in the plating solution, and a second step of, after immersing the film-formation surface in the plating solution, applying a second current between the cathode electrode and the anode electrode to form a metal film on the film-formation surface by electrolytic plating, wherein in the first step, the first current is controlled on the basis of an inclination angle between the liquid surface and the film-formation surface, wherein the first current is represented by the following equation (1): wherein I