发明申请
- 专利标题: METHODS OF FABRICATING A SEMICONDUCTOR DEVICE
- 专利标题(中): 制造半导体器件的方法
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申请号: US14328283申请日: 2014-07-10
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公开(公告)号: US20150104945A1公开(公告)日: 2015-04-16
- 发明人: Chawon Koh , Cheol Hong Park , Ki-Jeong Kim , Hyunwoo Kim , Hyosung Lee
- 申请人: Chawon Koh , Cheol Hong Park , Ki-Jeong Kim , Hyunwoo Kim , Hyosung Lee
- 优先权: KR10-2013-0122112 20131014
- 主分类号: H01L21/308
- IPC分类号: H01L21/308
摘要:
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.
公开/授权文献
- US09564325B2 Methods of fabricating a semiconductor device 公开/授权日:2017-02-07
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