发明授权
US08310012B2 Semiconductor device having metal gate and manufacturing method thereof
有权
具有金属栅极的半导体器件及其制造方法
- 专利标题: Semiconductor device having metal gate and manufacturing method thereof
- 专利标题(中): 具有金属栅极的半导体器件及其制造方法
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申请号: US12759670申请日: 2010-04-13
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公开(公告)号: US08310012B2公开(公告)日: 2012-11-13
- 发明人: Guang-Yaw Hwang , Yu-Ru Yang , Jiunn-Hsiung Liao , Pei-Yu Chou
- 申请人: Guang-Yaw Hwang , Yu-Ru Yang , Jiunn-Hsiung Liao , Pei-Yu Chou
- 申请人地址: TW Hsin-Chu
- 专利权人: United Microelectronics Corp.
- 当前专利权人: United Microelectronics Corp.
- 当前专利权人地址: TW Hsin-Chu
- 代理商 Winston Hsu; Scott Margo
- 主分类号: H01L29/78
- IPC分类号: H01L29/78 ; H01L21/3205
摘要:
A semiconductor device includes a semiconductor substrate, a gate dielectric layer formed on the semiconductor substrate, and at least a first conductive-type metal gate formed on the gate dielectric layer. The first conductive-type metal gate includes a filling metal layer and a U-type metal layer formed between the filling metal layer and the gate dielectric layer. A topmost portion of the U-type metal layer is lower than the filling metal layer.
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