Invention Grant
- Patent Title: Graded hardmask interlayer for enhanced extreme ultraviolet performance
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Application No.: US16188843Application Date: 2018-11-13
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Publication No.: US10998191B2Publication Date: 2021-05-04
- Inventor: Jennifer Church , Ekmini A. De Silva , Dario Goldfarb
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Abdy Raissinia
- Main IPC: H01L21/033
- IPC: H01L21/033 ; G03F7/20 ; H01L21/027

Abstract:
A patterning stack and methods are provided for semiconductor processing. The method includes forming a graded hardmask, the graded hardmask including a first material and a second material with extreme ultraviolet (EUV) absorption cross sections for absorption of EUV wavelengths, the second material configured to provide adhesion to photoresist materials. The method also includes depositing a photoresist layer over the graded hardmask. The method additionally includes patterning the photoresist layer. The method further includes etching the graded hardmask. The method also includes removing the photoresist layer.
Public/Granted literature
- US20200152460A1 GRADED HARDMASK INTERLAYER FOR ENHANCED EXTREME ULTRAVIOLET PERFORMANCE Public/Granted day:2020-05-14
Information query
IPC分类: