Invention Grant
- Patent Title: PECVD films for EUV lithography
- Patent Title (中): 用于EUV光刻的PECVD膜
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Application No.: US14185757Application Date: 2014-02-20
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Publication No.: US09304396B2Publication Date: 2016-04-05
- Inventor: Nader Shamma , Thomas Mountsier , Don Schlosser
- 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
- Main IPC: H01L21/033
- IPC: H01L21/033 ; G03F7/09 ; H01L21/314 ; G03F7/16 ; H01L21/311 ; H01L21/027

Abstract:
Provided herein are multi-layer stacks for use in extreme ultraviolet lithography tailored to achieve optimum etch contrast to shrink features and smooth the edges of features while enabling use of an optical leveling sensor with little or reduced error. The multi-layer stacks may include an atomically smooth layer with an average local roughness of less than a monolayer, and one or more underlayers, which may be between a target layer to be patterned and a photoresist. Also provided are methods of depositing multi-layer stacks for use in extreme ultraviolet lithography.
Public/Granted literature
- US20140239462A1 PECVD FILMS FOR EUV LITHOGRAPHY Public/Granted day:2014-08-28
Information query
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