发明授权
US08253222B2 Semiconductor device and fabrication method of semiconductor device
有权
半导体器件的半导体器件及其制造方法
- 专利标题: Semiconductor device and fabrication method of semiconductor device
- 专利标题(中): 半导体器件的半导体器件及其制造方法
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申请号: US13027792申请日: 2011-02-15
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公开(公告)号: US08253222B2公开(公告)日: 2012-08-28
- 发明人: Seiji Momota , Takeshi Fujii , Satoshi Kamijima , Makoto Asai
- 申请人: Seiji Momota , Takeshi Fujii , Satoshi Kamijima , Makoto Asai
- 申请人地址: JP Kawasaki-shi JP Kariya
- 专利权人: Fuji Electric Co., Ltd.,Denso Corporation
- 当前专利权人: Fuji Electric Co., Ltd.,Denso Corporation
- 当前专利权人地址: JP Kawasaki-shi JP Kariya
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2010-037535 20100223
- 主分类号: H01L29/41
- IPC分类号: H01L29/41
摘要:
A semiconductor device includes a first semiconductor region of a first conductivity type; a second semiconductor region of a second conductivity type, disposed on a surface of the first semiconductor region, and having an impurity concentration higher than that of the first semiconductor region; a trench that penetrates the second semiconductor region to reach the first semiconductor region; a first electrode disposed inside the trench via an insulating film; a first recess portion disposed deeper than an upper end of the first electrode, in a surface layer of the second semiconductor region, so as to be in contact with the trench; and a second electrode embedded in the first recess portion.
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