Patent ID: 8512540

Claim:
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): I=I 0 (φ−cos φ sin φ)/π (1) wherein I 0 is an intensity of the second current and 2φ is an angle made by straight lines passing through the wafer center and intersections of outer edge of the wafer with the surface of the plating solution.