Patent ID: 9633901
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A method for manufacturing a semiconductor device, the method comprising: forming a first semiconductor element and a second semiconductor element in a semiconductor wafer, the first semiconductor element including a first electrode formed on a front surface of the semiconductor wafer, and the second semiconductor element being adjacent to the first semiconductor element and including a second electrode formed on the front surface; forming a first insulating layer on the front surface located at a first boundary portion between the first electrode and the second electrode; applying a specific potential different from a potential of the second electrode on the first electrode after the formation of the first insulating layer; removing at least a part of the first insulating layer after the application of the specific potential so as to expose at least a part of the front surface located in the first boundary portion by sputtering the first insulating layer through a mask having an opening located above the first insulating layer located on the first boundary portion and an opening located above an exposed region of the first electrode; growing a metal layer on the exposed region of the first electrode through the mask after the removal of at least the part of the first insulating layer; and cutting the semiconductor wafer at a region of the semiconductor wafer including the exposed front surface in the first boundary portion so as to divide the first semiconductor element from the second semiconductor element.