Patent ID: 8471367

Claim:
A semiconductor device manufacturing method, the method comprising: forming a first insulating film on a front surface of a semiconductor substrate; forming an electrode section in the first insulating film; forming a barrier layer that covers the electrode section; forming a silicide layer that is connected to the electrode section; after said forming the silicide layer and said forming the first insulating film, forming a via hole by etching from a back surface toward the front surface of the semiconductor substrate and by using the first insulating film and the silicide layer as an etching stopping layer; forming a second insulating film on a sidewall and a bottom surface of the via hole and on the back surface of the semiconductor substrate; etching the second insulating film to expose the silicide layer and the first insulating film in the via hole; and forming a through-hole electrode layer at the second insulating film on the sidewall of the via hole, the second insulating film on the back surface of the semiconductor substrate, the first insulating film on the bottom surface of the via hole, and the silicide layer.