Patent ID: 7615474
Filing Date: 2009-11-10
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: (a) forming a conductive film on a first surface of a semiconductor substrate on which an electrode is formed, the semiconductor substrate having an integrated circuit, the electrode being electrically coupled to the integrated circuit, such that the electrode is covered by the conductive film, forming a plating resist layer on the conductive film such that the plating resist layer has an opening portion on a first part of the conductive film, and forming a metal layer on the first part of the conductive film by electrolytic plating, the electrolytic plating being performed by applying an electric current to the conductive film; (b) removing the plating resist layer after the step (a); (c) forming a resin layer on a second surface of the semiconductor substrate opposite to the first surface of the semiconductor substrate after the step (a); and (d) removing a second part of the conductive film by etching with the metal layer as a mask while etching a surface of the metal layer by the etching, after the steps (a), (b) and (c), the second part of the conductive film being exposed from the metal layer.