发明申请
- 专利标题: Method of Forming Trench-Gate Field Effect Transistors
- 专利标题(中): 形成沟槽栅场效应晶体管的方法
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申请号: US13075091申请日: 2011-03-29
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公开(公告)号: US20110177662A1公开(公告)日: 2011-07-21
- 发明人: Hamza Yilmaz , Daniel Calafut , Christopher Boguslaw Kocon , Steven P. Sapp , Dean E. Probst , Nathan L. Kraft , Thomas E. Grebs , Rodney S. Ridley , Gary M. Dolny , Bruce D. Marchant , Joseph A. Yedinak
- 申请人: Hamza Yilmaz , Daniel Calafut , Christopher Boguslaw Kocon , Steven P. Sapp , Dean E. Probst , Nathan L. Kraft , Thomas E. Grebs , Rodney S. Ridley , Gary M. Dolny , Bruce D. Marchant , Joseph A. Yedinak
- 主分类号: H01L21/336
- IPC分类号: H01L21/336
摘要:
A method of forming a field effect transistor includes: forming a trench in a semiconductor region; forming a shield electrode in the trench; performing an angled sidewall implant of impurities of the first conductivity type to form a channel enhancement region adjacent the trench; forming a body region of a second conductivity type in the semiconductor region; and forming a source region of the first conductivity type in the body region, the source region and an interface between the body region and the semiconductor region defining a channel region therebetween, the channel region extending along the trench sidewall. The channel enhancement region partially extends into a lower portion of the channel region to thereby reduce a resistance of the channel region.
公开/授权文献
- US08043913B2 Method of forming trench-gate field effect transistors 公开/授权日:2011-10-25
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