Invention Grant
- Patent Title: Semiconductor device including current spread region
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Application No.: US17031358Application Date: 2020-09-24
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Publication No.: US11552170B2Publication Date: 2023-01-10
- Inventor: Michael Hell , Rudolf Elpelt , Thomas Ganner , Caspar Leendertz
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Cooper Legal Group LLC
- Priority: DE102019125676.3 20190924
- Main IPC: H01L29/10
- IPC: H01L29/10 ; H01L21/04 ; H01L29/16 ; H01L29/66 ; H01L29/78

Abstract:
A semiconductor device includes a silicon carbide semiconductor body. A first shielding region of a first conductivity type is connected to a first contact at a first surface of the silicon carbide semiconductor body. A current spread region of a second conductivity type is connected to a second contact at a second surface of the silicon carbide semiconductor body. A doping concentration profile of the current spread region includes peaks along a vertical direction perpendicular to the first surface. A doping concentration of one peak or one peak-group of the peaks is at least 50% higher than a doping concentration of any other peak of the current spread region. A vertical distance between the one peak or the one peak-group of the current spread region and the first surface is larger than a second vertical distance between the first surface and a maximum doping peak of the first shielding region.
Public/Granted literature
- US20210091184A1 SEMICONDUCTOR DEVICE INCLUDING CURRENT SPREAD REGION Public/Granted day:2021-03-25
Information query
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