Invention Grant
- Patent Title: Low-k gate spacer and methods for forming the same
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Application No.: US16592955Application Date: 2019-10-04
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Publication No.: US10833170B2Publication Date: 2020-11-10
- Inventor: Wen-Kai Lin , Bo-Yu Lai , Li Chun Te , Kai-Hsuan Lee , Sai-Hooi Yeong , Tien-I Bao , Wei-Ken Lin
- 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: Slater Matsil, LLP
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/8238 ; H01L27/092 ; H01L29/08 ; H01L29/78

Abstract:
Embodiments of the present disclosure relate to a FinFET device having gate spacers with reduced capacitance and methods for forming the FinFET device. Particularly, the FinFET device according to the present disclosure includes gate spacers formed by two or more depositions. The gate spacers are formed by depositing first and second materials at different times of processing to reduce parasitic capacitance between gate structures and contacts introduced after epitaxy growth of source/drain regions.
Public/Granted literature
- US20200035809A1 Low-K Gate Spacer and Methods for Forming the Same Public/Granted day:2020-01-30
Information query
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