Patent ID: 8072073
Filing Date: 2011-12-06
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; a first wiring structure placed on said semiconductor substrate and having one or more first wiring layers, one or more insulating layers and a first via; a second wiring structure placed on said first wiring structure and having one or more second wiring layers, one or more second insulating layers, a second via and a third via; and an external terminal provided on said second wiring structure; wherein the second via, which is connected to the second wiring layer of said second wiring structure and to said external terminal, has a connection interface disposed at an end portion of the second via that is on the side of said external terminal, and the second via has an end portion on the side of said semiconductor substrate that is integrated with the second wiring layer so as to follow a grain boundary of the second wiring layer.