Invention Grant
- Patent Title: Method for etching features using a targeted deposition for selective passivation
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Application No.: US17619979Application Date: 2020-07-01
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Publication No.: US12217955B2Publication Date: 2025-02-04
- Inventor: Wenchi Liu , Zhongkui Tan , Juan Valdivia , Colin Richard Rementer , Qing Xu , Yoko Yamaguchi , Yoshie Kimura , Hua Xiang , Yasushi Ishikawa
- 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: Beyer Law Group LLP
- International Application: PCT/US2020/040432 WO 20200701
- International Announcement: WO2021/003224 WO 20210107
- Main IPC: H01L21/02
- IPC: H01L21/02 ; C23C16/04 ; C23C16/40 ; C23C16/455 ; C23C16/56 ; H01J37/32 ; H01L21/3213

Abstract:
A method for patterning a stack having a mask with a plurality of mask features is provided. A targeted deposition is provided, wherein the targeted deposition comprises a plurality of cycles, wherein each cycle comprises flowing a precursor to deposit a layer of precursor and targeted curing the layer of precursor, comprising flowing a curing gas, flowing a modification gas, forming a plasma from the curing gas and modification gas, and exposing the layer of precursor to the plasma providing a targeted curing, wherein plasma from the curing gas cures first portions of the layer of precursor and plasma from the modification gas modifies second portions of the layer of precursor, wherein the modification of the second portion reduces curing of the layer of precursor of the second portions of the layer of precursor. The stack is etched through the targeted deposition.
Public/Granted literature
- US20220301853A1 METHOD FOR ETCHING FEATURES USING A TARGETED DEPOSITION FOR SELECTIVE PASSIVATION Public/Granted day:2022-09-22
Information query
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