Patent ID: 8921224
Filing Date: 2014-12-30
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming, on a first surface of a semiconductor substrate containing silicon, a ring-like insulating film having a ring-like shape as seen from the above of the first surface; sequentially laminating a first insulating film, a first silicon film and a first metal film on the first surface and the ring-like insulating film; forming an opening which passes through the semiconductor substrate, the first insulating film and the first silicon film from a second surface of the semiconductor substrate located on the opposite side to the first surface by use of the first metal film as a stopper, as well as passing through the inside of the ring of the ring-like insulating film, to reach the surface of the first metal film; forming a second insulating film so as to cover an inner wall of the opening; and embedding a second metal film into the opening, to form a through electrode connected with the first metal film.