Invention Grant
- Patent Title: Super junction semiconductor device with overcompensation zones
- Patent Title (中): 具有过补偿区域的超结半导体器件
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Application No.: US13769630Application Date: 2013-02-18
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Publication No.: US08901623B2Publication Date: 2014-12-02
- Inventor: Armin Willmeroth , Franz Hirler , Uwe Wahl
- 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 ; H01L21/8238

Abstract:
According to an embodiment, a super junction semiconductor device may be manufactured by introducing impurities of a first impurity type into an exposed surface of a first semiconductor layer of the first impurity type, thus forming an implant layer. A second semiconductor layer of the first impurity type may be provided on the exposed surface and trenches may be etched through the second semiconductor layer into the first semiconductor layer. Thereby first columns with first overcompensation zones obtained from the implant layer are formed between the trenches. Second columns of the second conductivity type may be provided in the trenches. The first and second columns form a super junction structure with a vertical first section in which the first overcompensation zones overcompensate a corresponding section in the second columns.
Public/Granted literature
- US20140231904A1 Super Junction Semiconductor Device with Overcompensation Zones Public/Granted day:2014-08-21
Information query
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