Patent ID: 8710642

Claim:
A semiconductor device comprising: a first wiring board; a first semiconductor element mounted on the first wiring board; a second wiring board disposed over the first semiconductor element; a second semiconductor element mounted on the second wiring board; a connecting portion disposed between the first wiring board and the second wiring board so as to electrically connect the first wiring board and the second wiring board; a first resin layer disposed between the first wiring board and the second wiring board so as to seal the first semiconductor element and so as to bond the first wiring board and the second wiring board together; and a second resin layer that seals the second semiconductor element; wherein the connecting portion includes a first protruding electrode provided for the first wiring board and a second protruding electrode provided for the second wiring board and connected to the first protruding electrode; and the first protruding electrode bites into the second protruding electrode.