- 专利标题: Metal gate structure and methods thereof
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申请号: US17446900申请日: 2021-09-03
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公开(公告)号: US11682669B2公开(公告)日: 2023-06-20
- 发明人: Ming-Chi Huang , Ying-Liang Chuang , Ming-Hsi Yeh , Kuo-Bin Huang
- 申请人: Taiwan Semiconductor Manufacturing Co., Ltd.
- 申请人地址: TW Hsinchu
- 专利权人: Taiwan Semiconductor Manufacturing Co., Ltd.
- 当前专利权人: Taiwan Semiconductor Manufacturing Co., Ltd.
- 当前专利权人地址: TW Hsinchu
- 代理机构: Haynes and Boone, LLP
- 分案原申请号: US16947758 2020.08.14
- 主分类号: H01L27/088
- IPC分类号: H01L27/088 ; H01L21/311 ; H01L21/3213 ; H01L21/8234 ; H01L21/8238 ; H01L27/092 ; H01L29/06 ; H01L29/423 ; H01L29/49 ; H01L29/51 ; H01L29/66
摘要:
Provided is a metal gate structure and related methods that include performing a metal gate cut process. The metal gate cut process includes a plurality of etching steps. For example, a first anisotropic dry etch is performed, a second isotropic dry etch is performed, and a third wet etch is performed. In some embodiments, the second isotropic etch removes a residual portion of a metal gate layer including a metal containing layer. In some embodiments, the third etch removes a residual portion of a dielectric layer.
公开/授权文献
- US20210398975A1 METAL GATE STRUCTURE AND METHODS THEREOF 公开/授权日:2021-12-23
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