Invention Grant
- Patent Title: Patterning material film stack with hard mask layer configured to support selective deposition on patterned resist layer
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Application No.: US16657654Application Date: 2019-10-18
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Publication No.: US11500293B2Publication Date: 2022-11-15
- Inventor: Ekmini Anuja De Silva , Indira Seshadri , Jing Guo , Ashim Dutta , Nelson Felix
- 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: Ryan, Mason & Lewis, LLP
- Agent L. Jeffrey Kelly
- Main IPC: G03F7/20
- IPC: G03F7/20 ; H01L21/308 ; H01L21/027 ; G03F1/22 ; H01L21/033 ; G03F1/54 ; G03F7/40

Abstract:
A semiconductor structure comprises a semiconductor substrate, and a multi-layer patterning material film stack formed on the semiconductor substrate. The patterning material film stack comprises at least a hard mask layer and a resist layer formed over the hard mask layer. The hard mask layer is configured to support selective deposition of a metal-containing layer on a developed pattern of the resist layer through inclusion in the hard mask layer of one or more materials inhibiting deposition of the metal-containing layer on portions of the hard mask layer corresponding to respective openings in the resist layer. The hard mask layer illustratively comprises, for example, at least one of a grafted self-assembled monolayer configured to inhibit deposition of the metal-containing layer, and a grafted polymer brush material configured to inhibit deposition of the metal-containing layer.
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