Invention Grant
- Patent Title: Power semiconductor device
- Patent Title (中): 功率半导体器件
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Application No.: US12502759Application Date: 2009-07-14
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Publication No.: US08169023B2Publication Date: 2012-05-01
- Inventor: Miwako Akiyama , Yusuke Kawaguchi , Yoshihiro Yamaguchi
- Applicant: Miwako Akiyama , Yusuke Kawaguchi , Yoshihiro Yamaguchi
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Patterson & Sheridan, LLP
- Priority: JP2008-184822 20080716
- Main IPC: H01L29/76
- IPC: H01L29/76 ; H01L31/062

Abstract:
An impurity concentration profile in a vertical direction of a p type base contact layer of a power semiconductor device has a two-stage configuration. In other word, the impurity concentration profile is highest at an upper face of the p type base contact layer, has a local minimum value at a position other than the upper face and a lower face of the base contact layer, and has a local maximum value at a position lower than the position of the local minimum value.
Public/Granted literature
- US20100013010A1 POWER SEMICONDUCTOR DEVICE Public/Granted day:2010-01-21
Information query
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