Invention Grant
- Patent Title: Void free low stress fill
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Application No.: US17299753Application Date: 2019-12-05
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Publication No.: US11978666B2Publication Date: 2024-05-07
- Inventor: Anand Chandrashekar , Tsung-Han Yang
- Applicant: Lam Research Corporation
- Applicant Address: US CA Fremont
- Assignee: Lam Research Corporation
- Current Assignee: Lam Research Corporation
- Current Assignee Address: US CA Fremont
- Agency: Weaver Austin Villeneuve & Sampson LLP
- International Application: PCT/US2019/064768 2019.12.05
- International Announcement: WO2020/118100A 2020.06.11
- Date entered country: 2021-06-03
- Main IPC: H01L21/768
- IPC: H01L21/768 ; C23C16/04 ; C23C16/06 ; C23C16/455 ; C23C16/52 ; H01J37/32 ; H01L21/285 ; H10B69/00

Abstract:
Provided herein are methods of depositing low stress and void free metal films in deep features and related apparatus. Embodiments of the methods include treating the sidewalls of the holes to inhibit metal deposition while leaving the feature bottom untreated. In subsequent deposition operations, metal precursor molecules diffuse to the feature bottom for deposition. The process is repeated with subsequent inhibition operations treating the remaining exposed sidewalls. By repeating inhibition and deposition operations, high quality void free fill can be achieved. This allows high temperature, low stress deposition to be performed.
Public/Granted literature
- US20220020641A1 VOID FREE LOW STRESS FILL Public/Granted day:2022-01-20
Information query
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