Patent ID: 7514780

Claim:
A power semiconductor device comprising: a first semiconductor region of a first conductive type joined with a first electrode; a second semiconductor region of a second conductive type joined with a second electrode; a third semiconductor region of the first conductive type mounted in said second semiconductor region; a semiconductor chip, mounted with a first electrode pad for said first electrode on a semiconductor substrate main surface at the inside surrounded by said third semiconductor region; a multilayer substrate having a first wiring layer, and a second wiring layer of a more inside layer than said first wiring layer from said first electrode pad, to take out an electrode of said semiconductor chip; and a first wiring layer part for the first electrode mounted in a region opposing to the semiconductor substrate main surface at the inside surrounded by said third semiconductor region of said multilayer substrate, wherein said first wiring layer part for the first electrode and said first electrode pad are connected with by a conductive bonding material, said first wiring layer part for the first electrode and the second wiring layer are connected at a conductive through-hole part, and said second wiring layer is extended to the outside of a region opposing the semiconductor substrate main surface at the inside surrounded by said third semiconductor region.