Patent ID: 9673139
Date: 2017-06-06
CPC Classifications: C25D,H01L

Claim:
1. A semiconductor device comprising: a first insulating film formed on a semiconductor substrate; a first wiring formed on the first insulating film; a second insulating film provided on the first insulating film to cover the first wiring; and a second wiring formed on the second insulating film, wherein: the second insulating film has a first opening part and a second opening part which expose the first wiring, the second wiring has a seed layer provided in the first opening part and in a periphery of the first opening part, and a first plating layer provided on the seed layer, the first plating layer covers an upper surface and a side surface of the seed layer, a lower surface of the first plating layer is in direct contact with an upper surface of the second insulating film in entire circumference outside the seed layer, and the seed layer is not provided in the second opening part and in a periphery of the second opening part.