Invention Grant
- Patent Title: SiC device and methods of manufacturing thereof
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Application No.: US16797463Application Date: 2020-02-21
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Publication No.: US10896952B2Publication Date: 2021-01-19
- 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:
A semiconductor device includes gate trenches formed in a SiC substrate and extending lengthwise in parallel in a first direction. A trench interval which defines a space between adjacent gate trenches extends in a second direction perpendicular to the first direction. Source regions of a first conductivity type formed in the SiC substrate occupy a first part of the space between adjacent gate trenches. Body regions of a second conductivity type opposite the first conductivity type formed in the SiC substrate and below the source regions occupy a second part of the space between adjacent gate trenches. Body contact regions of the second conductivity type formed in the SiC substrate occupy a third part of the space between adjacent gate trenches. Shielding regions of the second conductivity type formed deeper in the SiC substrate than the body regions adjoin a bottom of at least some of the gate trenches.
Information query
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