Invention Grant
- Patent Title: Methods of fabricating a semiconductor device
- Patent Title (中): 制造半导体器件的方法
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Application No.: US14328283Application Date: 2014-07-10
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Publication No.: US09564325B2Publication Date: 2017-02-07
- Inventor: Chawon Koh , Cheol Hong Park , Ki-Jeong Kim , Hyunwoo Kim , Hyosung Lee
- Applicant: Chawon Koh , Cheol Hong Park , Ki-Jeong Kim , Hyunwoo Kim , Hyosung Lee
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR
- Agency: Myers Bigel, P.A.
- Priority: KR10-2013-0122112 20131014
- Main IPC: H01L21/311
- IPC: H01L21/311 ; H01L21/027 ; H01L21/308 ; H01L27/115

Abstract:
A method for fabricating a semiconductor device is provided. In the method, a first hard mask layer is formed on a stepped structure. The first hard mask layer has a level top surface and thickness sufficient to etch the structure. A second hard mask pattern is formed on the first hard mask layer. The first hard mask layer is etched using the second hard mask pattern. Size dispersion of the patterns may be reduced by the first hard mask layer.
Public/Granted literature
- US20150104945A1 METHODS OF FABRICATING A SEMICONDUCTOR DEVICE Public/Granted day:2015-04-16
Information query
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