Patent ID: 7646058
Filing Date: 2010-01-12
Classification: H01L

Abstract:
1. A vertical semiconductor power device comprising a plurality of semiconductor power cells connected to a bottom electric terminal disposed on a bottom surface of a semiconductor substrate and at least a top electrical terminal disposed on a top surface of the substrate and connected to the semiconductor power cells, said semiconductor power device further comprising: contact trenches opened through an insulation layer and extended into regions of said power cells wherein said contact trenches are filled with metallic contact plugs providing electrical and thermal conductivity contacts; said top electrical terminal further comprising a solderable front metal disposed on top of said insulation layer and contacting said metal plugs penetrated through said insulation layer wherein said metallic contact plugs and said front metal are composed of a metallic material having a thermal conductivity higher than a thermal conductivity of aluminum and/or aluminum alloys and said metallic contact plugs and said from metal comprises a continuous uninterrupted electrical and thermal conductivity conducting path from said semiconductor power device to said front metal.