Invention Grant
- Patent Title: Methods of forming contact features in field-effect transistors
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Application No.: US16393543Application Date: 2019-04-24
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Publication No.: US11081403B2Publication Date: 2021-08-03
- Inventor: Yi-Hsiung Lin , Yi-Hsun Chiu , Shang-Wen Chang
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L21/762 ; H01L21/8238 ; H01L27/092 ; H01L29/08 ; H01L29/66 ; H01L29/78 ; H01L23/522

Abstract:
A method includes forming an interlayer dielectric (ILD) layer over a first epitaxial source/drain (S/D) feature and a second epitaxial S/D feature, where the first epitaxial S/D feature is disposed adjacent to the second epitaxial S/D feature, forming a dummy contact feature in the ILD layer over the first epitaxial S/D feature, removing a portion of the dummy contact feature and a portion of the ILD layer disposed above the second epitaxial S/D feature to form a first trench, removing a remaining portion of the dummy contact feature to form a second trench, and forming a metal S/D contact in the first and the second trenches.
Public/Granted literature
- US20200006160A1 Methods of Forming Contact Features in Field-Effect Transistors Public/Granted day:2020-01-02
Information query
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