Invention Grant
- Patent Title: Lithographic technique for feature cut by line-end shrink
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Application No.: US16541340Application Date: 2019-08-15
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Publication No.: US10763113B2Publication Date: 2020-09-01
- Inventor: Yung-Sung Yen , Chun-Kuang Chen , Ko-Bin Kao , Ken-Hsien Hsieh , Ru-Gun Liu
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee Address: TW Hsin-Chu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/027 ; H01L21/768 ; H01L21/033 ; H01L21/311

Abstract:
A technique for patterning a workpiece such as an integrated circuit workpiece is provided. In an exemplary embodiment, the method includes receiving a dataset specifying a plurality features to be formed on the workpiece. A first patterning of a hard mask of the workpiece is performed based on a first set of features of the plurality of features, and a first spacer material is deposited on a sidewall of the patterned hard mask. A second patterning is performed based on a second set of features, and a second spacer material is deposited on a sidewall of the first spacer material. A third patterning is performed based on a third set of features. A portion of the workpiece is selectively processed using a pattern defined by a remainder of at least one of the patterned hard mask layer, the first spacer material, or the second spacer material.
Public/Granted literature
- US20190378712A1 LITHOGRAPHIC TECHNIQUE FOR FEATURE CUT BY LINE-END SHRINK Public/Granted day:2019-12-12
Information query
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