Patent ID: 6972488
Filing Date: 2005-12-06
Classification: H01L,H05K

Abstract:
1. A semiconductor device comprising: a printed wiring board comprised of an electrically insulating substrate and a metal wiring formed on said substrate; a semiconductor chip mounted on said metal wiring; and a molded resin formed on said metal wiring, covering said semiconductor chip therewith, wherein said metal wiring and said substrate are formed with at least one through-hole in a region other than a region in which said semiconductor chip is to be formed, said through-hole is filled with said molded resin with said through-hole being plated at an inner wall thereof with a noble metal having a small adhesion force with said molded resin, and further with said metal wiring being coated at a surface thereof with said noble metal, and an interfacial surface between said noble metal and said molded resin through which moisture contained in said semiconductor device escapes outside extends externally beyond said semiconductor device from said semiconductor chip.