Patent ID: 7508072

Claim:
A semiconductor device comprising: a semiconductor substrate comprising a front surface and a back surface and having a via hole connecting the front and back surfaces; an electronic circuit disposed on the front surface; a first pad electrode disposed on the front surface so as to cover the via hole and connected with the electronic circuit; a second pad electrode disposed on the front surface and connected with the first pad electrode; a protection film disposed on the front surface so as to cover the whole first pad electrode and having an opening to expose part of the second pad electrode; an inorganic supporting body attached to the front surface of the semiconductor substrate; an organic attachment layer attaching the inorganic supporting body to the semiconductor substrate and being in contact with the exposed part of the second pad electrode through the opening in the protection film; and a wiring layer disposed on the back surface so as to be in contact with the first pad electrode through the via hole, wherein the semiconductor device is configured to be mounted on a circuit board.