发明授权
US07670932B2 MOS structures with contact projections for lower contact resistance and methods for fabricating the same
有权
具有用于较低接触电阻的接触突起的MOS结构及其制造方法
- 专利标题: MOS structures with contact projections for lower contact resistance and methods for fabricating the same
- 专利标题(中): 具有用于较低接触电阻的接触突起的MOS结构及其制造方法
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申请号: US11762133申请日: 2007-06-13
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公开(公告)号: US07670932B2公开(公告)日: 2010-03-02
- 发明人: Jianhong Zhu , Fred Hause , David Wu
- 申请人: Jianhong Zhu , Fred Hause , David Wu
- 申请人地址: US TX Austin
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Ingrassia Fisher & Lorenz, P.C.
- 主分类号: C12N15/75
- IPC分类号: C12N15/75
摘要:
MOS structures with contact projections for lower contact resistance and methods for fabricating such MOS structures have been provided. In an embodiment, a method comprises providing a semiconductor substrate, fabricating a gate stack on the substrate, and forming a contact projection on the substrate. Ions of a conductivity-determining type are implanted within the substrate using the gate stack as an ion implantation mask to form impurity-doped regions within the substrate. A metal silicide layer is formed on the contact projection and a contact is formed to the metal silicide layer. The contact is in electrical communication with the impurity-doped regions via the contact projection.
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