Patent ID: 7646100
Filing Date: 2010-01-12
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate comprising a first insulating film disposed on a front surface thereof; a first pad electrode layer disposed on part of the first insulating film; a second insulating film disposed on the first pad electrode layer and having a first via hole; a second pad electrode layer disposed on the second insulating film; a metal plug disposed in the first via hole and electrically connecting the first and second pad electrode layers; a penetrating electrode disposed in a second via hole and electrically connected to the first pad electrode layer, the second via hole being formed from a back surface of the semiconductor substrate toward the first pad electrode layer; a first protecting layer disposed on the second insulating film; a wiring layer disposed on the back surface and electrically connected to the penetrating electrode; and a second protecting layer disposed on the back surface to cover at least part of the wiring layer, wherein the first pad electrode layer covers one end of the second via hole formed in the semiconductor substrate so as to close the one end, the first protecting layer covers a portion of the second pad electrode layer and leaves another portion of the second pad electrode layer exposed, and a conductive terminal is disposed on a part of the wiring layer not covered by the second protecting layer and is away from the second via hole in a direction parallel to the front surface of the semiconductor substrate.