Invention Grant
- Patent Title: Organic mandrel protection process
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Application No.: US15491432Application Date: 2017-04-19
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Publication No.: US10354873B2Publication Date: 2019-07-16
- Inventor: Akiteru Ko , Angelique Raley , Sophie Thibaut , Satoru Nakamura , Nihar Mohanty
- Applicant: Tokyo Electron Limited
- Applicant Address: JP Tokyo
- Assignee: Tokyo Electron Limited
- Current Assignee: Tokyo Electron Limited
- Current Assignee Address: JP Tokyo
- Agency: Wood Herron & Evans LLP
- Main IPC: H01L21/033
- IPC: H01L21/033 ; H01L21/02 ; H01L21/027 ; H01L21/311 ; H01L21/66

Abstract:
Provided is a method of patterning spacers, the method comprising: providing an initial patterned structure in a substrate in a processing chamber, the initial patterned structure comprising an organic mandrel and an underlying layer; exposing the patterned structure in a direct current superposition (DCS) plasma treatment process, the process depositing a layer of a first material on the initial patterned structure; performing an atomic layer conformal deposition process using a second material, the first material providing protection to the organic mandrel at the beginning of the atomic layer conformal deposition process; performing a spacer etch mandrel pull process, the process creating a final patterned structure with a target final sidewall angle; concurrently controlling integration operating variables in the DCS plasma treatment process, the atomic layer conformal deposition process, and the spacer etch mandrel pull process in order to meet the target final sidewall angle and other integration objectives.
Public/Granted literature
- US20170358450A1 Organic Mandrel Protection Process Public/Granted day:2017-12-14
Information query
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