Patent ID: 9666437
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. A method for manufacturing a semiconductor device including a semiconductor chip having a front surface electrode and a rear surface electrode provided on a front surface and a rear surface, respectively, the method comprising: a front surface electrode layer forming step of forming a front surface electrode layer as the front surface electrode on a front surface of a semiconductor wafer forming the semiconductor chip; a protective film forming step of forming a protective film on the front surface of the semiconductor wafer such that a portion of the protective film exposes the front surface electrode layer and the protective film is retained on an outer circumferential portion of the semiconductor wafer after the front surface electrode layer forming step; a thinning step of grinding a rear surface of the semiconductor wafer to reduce a thickness of the semiconductor wafer after the protective film forming step; a plating step of forming an electrode plating film as the front surface electrode on a surface of the front surface electrode layer after the thinning step; and a rear surface electrode forming step of forming the rear surface electrode on the ground rear surface of the semiconductor wafer after the plating step, wherein the plating step of forming the electrode plating film is performed before the rear surface electrode forming step.