Patent ID: 7326638
Filing Date: 2008-02-05
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising the steps of: (a) forming an electronic circuit on one surface of a semiconductor substrate and forming electrode pads by disposing electrode terminals of the electronic circuit through interconnections on said one surface of the semiconductor substrate; (b) grinding a back surface which is a surface of the semiconductor substrate opposite said one surface; (c) forming a first resin layer on the back surface of the semiconductor substrate; (d) forming a barrier metal layer on each of the electrode pads by an electroless plating technique after forming the first resin layer; (e) forming a solder core on the barrier metal layer by printing a solder paste and heating; (f) forming a second resin layer on a surface of the semiconductor substrate on which the solder core is formed; (g) exposing the solder core by grinding the second resin layer; and (h) forming a solder bump by printing a solder paste on an exposed surface of the solder core, and by applying a heat treatment.