发明申请
- 专利标题： SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
- 专利标题（中）： 半导体器件及其制造方法
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申请号： US11608538申请日： 2006-12-08
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公开(公告)号： US20070138547A1公开(公告)日： 2007-06-21
- 发明人: Kazutoshi Nakamura
- 申请人： Kazutoshi Nakamura
- 申请人地址： JP Tokyo
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2005-356109 20051209
- 主分类号： H01L29/76
- IPC分类号： H01L29/76
摘要：
A semiconductor device comprises a semiconductor region of the first conduction type. A first main electrode is connected to the semiconductor region. A base region of the second conduction type is formed on the semiconductor region. A diffused region of the first conduction type is formed on the base region. A second main electrode is connected to the diffused region and the base region. A first trench is formed extending from a surface of the diffused region to the semiconductor region. A second trench is formed from the first trench deeper than the first trench. A gate electrode is formed on a side of the first trench via a first insulator film. A protruded electrode is formed in the second trench via a second insulator film as protruded lower than the gate electrode.
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