发明申请
- 专利标题: METHOD OF FORMING OPENINGS
- 专利标题(中): 形成开口的方法
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申请号: US13431945申请日: 2012-03-27
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公开(公告)号: US20120184105A1公开(公告)日: 2012-07-19
- 发明人: Pei-Yu Chou , Jiunn-Hsiung Liao
- 申请人: Pei-Yu Chou , Jiunn-Hsiung Liao
- 主分类号: H01L21/311
- IPC分类号: H01L21/311
摘要:
A method for forming openings is provided. First, a substrate with a silicon-containing photo resist layer thereon is provided. Second, a first photo resist pattern is formed on the silicon-containing photo resist layer. Later, a first etching procedure is carried out on the silicon-containing photo resist layer to form a plurality of first openings by using the first photo resist pattern as an etching mask. Next, a second photo resist pattern is formed on the silicon-containing photo resist layer. Then, a second etching procedure is carried out on the silicon-containing photo resist layer to form a plurality of second openings by using the second photo resist pattern as an etching mask.
公开/授权文献
- US08673544B2 Method of forming openings 公开/授权日:2014-03-18
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