Patent ID: 9269713
Filing Date: 2016-02-23
CPC Classification: H01L

Claim Text:
1. A power semiconductor device comprising: a first substrate that is highly doped with a first dopant type, the first substrate having a front face and a back face, the back face forming a backside of the device, a vertical p-type FET and a vertical n-type FET provided laterally adjacent to each other on the front face of the first substrate, wherein a first of the vertical FETs has a first drift zone and a second of the vertical FETs has a complementary second drift zone with a complementary doping to the first dopant of the first substrate, and a complementary highly doped second region provided between the complementary second drift zone and the first substrate, wherein the p-type FET and the n-type FET share the first substrate as a common backside, and wherein a region between the complementary second drift zone and the first substrate, including at least a part of the complementary highly doped second region, comprises a highly conductive structure providing a low ohmic connection between the complementary second drift zone and the first substrate.