Patent ID: 11171226

Abstract:
IGBT semiconductor structure having a p+ substrate, an n− layer, at least one p region adjacent to the n− layer, and at least one n+ region adjacent to the p region, a dielectric layer and three terminal contacts. The p region forms a first p-n junction together with the n− layer, and the n+ region forms a second p-n junction together with the at least one p region. The dielectric layer covers the first p-n junction and the second p-n junction. The second terminal contact is implemented as a field plate on the dielectric layer and a doped intermediate layer with a layer thickness of 1 μm-50 μm and a dopant concentration of 1012-1017 cm−3 is arranged between the p+ substrate and the n− layer, wherein the intermediate layer is integrally joined to at least the p+ substrate.