Patent ID: 7977775
Filing Date: 2011-07-12
Classification: H01L

Abstract:
1. A semiconductor device comprising: a lead frame having an obverse surface, a reverse surface opposite to the obverse surface, a die pad portion, and a first lead arranged in the vicinity of the die pad portion; a semiconductor chip mounted over the die pad portion with face up and having a first pad over a main surface of the semiconductor chip; a conductor for electrically coupling the first lead and the first pad; and a resin package for sealing therein the die pad portion, the semiconductor chip, the conductor, and the inner lead portion of the first lead, wherein an obverse surface of the die pad has a first porous metal layer formed using a plurality of Ag nanoparticles, wherein the die pad portion is bonded to a back surface of the semiconductor chip via an Ag paste, wherein a size of the Ag nanoparticles is smaller than a size of an Ag filler of the Ag paste, and wherein an epoxy resin of the Ag paste penetrates between each said Ag nanoparticle.