- Patent Title: SiC trench transistor device and methods of manufacturing thereof
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Application No.: US16193296Application Date: 2018-11-16
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Publication No.: US10586845B1Publication Date: 2020-03-10
- Inventor: Thomas Aichinger , Wolfgang Bergner , Paul Ellinghaus , Rudolf Elpelt , Romain Esteve , Florian Grasse , Caspar Leendertz , Shiqin Niu , Dethard Peters , Ralf Siemieniec , Bernd Zippelius
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Murphy, Bilak & Homiller, PLLC
- Main IPC: H01L29/06
- IPC: H01L29/06 ; H01L29/16 ; H01L21/265 ; H01L29/423 ; H01L29/66 ; H01L27/088

Abstract:
According to an embodiment of a semiconductor device, the device includes gate trenches formed in a SiC substrate and extending lengthwise in parallel in a first direction. Rows of source regions of a first conductivity type are formed in the SiC substrate and extend lengthwise in parallel in a second direction which is transverse to the first direction. Rows of body regions of a second conductivity type opposite the first conductivity type are formed in the SiC substrate below the rows of source regions. Rows of body contact regions of the second conductivity type are formed in the SiC substrate. The rows of body contact regions extend lengthwise in parallel in the second direction. First shielding regions of the second conductivity type are formed deeper in the SiC substrate than the rows of body regions.
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