Invention Grant
- Patent Title: Mask removal for tight-pitched nanostructures
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Application No.: US16374279Application Date: 2019-04-03
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Publication No.: US10943816B2Publication Date: 2021-03-09
- Inventor: Juntao Li , Kangguo Cheng , ChoongHyun Lee
- 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 Douglas Pearson
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L21/033 ; H01L21/308 ; H01L21/311

Abstract:
A method for manufacturing a semiconductor device includes forming a hardmask layer on a substrate, and patterning the hardmask layer into a plurality of hardmask portions. The method also includes forming a liner layer on the plurality of hardmask portions, and removing a portion of the liner layer from at least one hardmask portion of the plurality of hardmask portions. The removing exposes one or more surfaces of the at least one hardmask portion. In the method, the at least one hardmask portion and a remaining portion of the liner layer are removed. A pattern of remaining ones of the plurality of hardmask portions are transferred to the substrate to form one of a plurality of patterned substrate portions and a plurality of openings in the substrate.
Public/Granted literature
- US20200321245A1 MASK REMOVAL FOR TIGHT-PITCHED NANOSTRUCTURES Public/Granted day:2020-10-08
Information query
IPC分类: