Patent ID: 7857946

Claim:
A sputtering film forming method for forming a deposition film whose film thickness is distributed at a predetermined inclination rate in one direction of a fully exposed surface of a substrate, said method comprising the steps of: positioning a target at an incline to the fully exposed surface of the substrate upon which a film is to be formed, and forming the film having the predetermined inclination rate in the one direction of the fully exposed surface of the substrate upon the fully exposed surface of the substrate while the substrate is rotated about a normal axis to the fully exposed surface of the substrate; and terminating the forming of the film at a predetermined timing from a commencement of the forming of the film, wherein the forming of the film is terminated, when the substrate has rotated by 360 degrees×n+180 degrees+α, where n is a natural number, including 0, and −10 degrees<α<10 degrees.