Invention Grant
- Patent Title: Method for producing a superjunction device
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Application No.: US17393779Application Date: 2021-08-04
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Publication No.: US11894445B2Publication Date: 2024-02-06
- Inventor: Daniel Tutuc , Matthias Kuenle , Ingo Muri , Hans Weber
- Applicant: Infineon Technologies Austria AG
- Applicant Address: AT Villach
- Assignee: Infineon Technologies Austria AG
- Current Assignee: Infineon Technologies Austria AG
- Current Assignee Address: AT Villach
- Agency: Murphy, Bilak & Homiller, PLLC
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/265 ; H01L29/06 ; H01L29/08 ; H01L29/78 ; H01L21/8234

Abstract:
Disclosed is a method for producing a semiconductor device, the method including forming a plurality of semiconductor arrangements one above the other, wherein forming each of the plurality of semiconductor arrangements includes forming a semiconductor layer, forming a plurality of trenches in a first surface of the semiconductor layer, and implanting dopant atoms of at least one of a first type and a second type into at least one of a first sidewall and a second sidewall of each of the plurality of trenches. Forming of at least one of the plurality of semiconductor arrangements further includes forming a protective layer covering mesa regions between the plurality of trenches of the respective semiconductor layer, and covering a bottom, the first sidewall and the second sidewall of each of the plurality of trenches that are formed in the respective semiconductor layer.
Information query
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