发明授权
US08368126B2 Trench metal oxide semiconductor with recessed trench material and remote contacts
有权
沟槽金属氧化物半导体具有凹槽沟槽材料和远程触点
- 专利标题: Trench metal oxide semiconductor with recessed trench material and remote contacts
- 专利标题(中): 沟槽金属氧化物半导体具有凹槽沟槽材料和远程触点
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申请号: US12098950申请日: 2008-04-07
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公开(公告)号: US08368126B2公开(公告)日: 2013-02-05
- 发明人: Deva N. Pattanayak , Kyle Terrill , Sharon Shi , Misha Lee , Yuming Bai , Kam Lui , Kuo-In Chen
- 申请人: Deva N. Pattanayak , Kyle Terrill , Sharon Shi , Misha Lee , Yuming Bai , Kam Lui , Kuo-In Chen
- 申请人地址: US CA Santa Clara
- 专利权人: Vishay-Siliconix
- 当前专利权人: Vishay-Siliconix
- 当前专利权人地址: US CA Santa Clara
- 主分类号: H01L29/80
- IPC分类号: H01L29/80
摘要:
Remote contacts to the polysilicon regions of a trench metal oxide semiconductor (MOS) barrier Schottky (TMBS) device, as well as to the polysilicon regions of a MOS field effect transistor (MOSFET) section and of a TMBS section in a monolithically integrated TMBS and MOSFET (SKYFET) device, are employed. The polysilicon is recessed relative to adjacent mesas. Contact of the source metal to the polysilicon regions of the TMBS section is made through an extension of the polysilicon to outside the active region of the TMBS section. This change in the device architecture relieves the need to remove all of the oxides from both the polysilicon and silicon mesa regions of the TMBS section prior to the contact step. As a consequence, encroachment of contact metal into the sidewalls of the trenches in a TMBS device, or in a SKYFET device, is avoided.
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