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.: US15850192Application Date: 2017-12-21
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Publication No.: US10656527B2Publication Date: 2020-05-19
- 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 Vazken Alexanian
- Main IPC: G03F7/40
- IPC: G03F7/40 ; G03F7/20 ; H01L21/308 ; H01L21/027 ; G03F1/22 ; H01L21/033 ; G03F1/54

Abstract:
A lithographic patterning method includes forming a multi-layer patterning material film stack on a semiconductor substrate. Forming the patterning material film stack more particularly includes forming a hard mask layer and forming a resist layer over the hard mask layer. The hard mask layer is configured to support selective deposition of a metal-containing layer on the resist layer, the selective deposition of the metal-containing layer on the resist layer occurring after pattern development. The method further includes exposing the multi-layer patterning material film stack to patterning radiation to form a desired pattern in the resist layer, developing the pattern formed in the resist layer, and selectively depositing the metal-containing layer on the developed pattern in the resist layer. The selective deposition avoids deposition of the metal-containing layer on portions of the hard mask layer corresponding to respective openings in the resist layer.
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