Invention Grant
- Patent Title: FinFET fabrication methods
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Application No.: US16673661Application Date: 2019-11-04
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Publication No.: US11276766B2Publication Date: 2022-03-15
- Inventor: Chun Hsiung Tsai , Cheng-Yi Peng , Yin-Pin Wang , Kuo-Feng Yu , Da-Wen Lin , Jian-Hao Chen , Shahaji B. More
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/8234 ; H01L21/265 ; H01L21/324 ; H01L21/768 ; H01L21/223

Abstract:
A method and structure for doping source and drain (S/D) regions of a PMOS and/or NMOS FinFET device are provided. In some embodiments, a method includes providing a substrate including a fin extending therefrom. In some examples, the fin includes a channel region, source/drain regions disposed adjacent to and on either side of the channel region, a gate structure disposed over the channel region, and a main spacer disposed on sidewalls of the gate structure. In some embodiments, contact openings are formed to provide access to the source/drain regions, where the forming the contact openings may etch a portion of the main spacer. After forming the contact openings, a spacer deposition and etch process may be performed. In some cases, after performing the spacer deposition and etch process, a silicide layer is formed over, and in contact with, the source/drain regions.
Public/Granted literature
- US20200066869A1 FINFET FABRICATION METHODS Public/Granted day:2020-02-27
Information query
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