Patent ID: 8053852
Filing Date: 2011-11-08
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor die having a front surface and a back surface and comprising a semiconductor portion between the front and the back surfaces, the semiconductor portion constituting the entire semiconductor portion between the front surface and the back surface of the semiconductor die; a light receiving element formed on the front surface as part of the semiconductor die and configured to receive light coming through the semiconductor portion in which the light receiving element is not formed; a pad electrode connected with the light receiving element and disposed on the front surface; a supporting body attached to the front surface and having a via hole standing on the pad electrode; a wiring disposed in the via hole so that the wiring is in contact with the pad electrode at one end of the via hole and extends from another end of the via hole to cover a portion of a surface of the supporting body; and a circuit board comprising an electrode that is in contact with the wiring covering the portion of the surface of the supporting body, wherein an average thickness of the semiconductor portion at the light receiving element and a thickness of the semiconductor portion at the via hole of the supporting body are substantially the same.