Invention Grant
- Patent Title: Method for fabricating hole pattern
- Patent Title (中): 孔图案制作方法
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Application No.: US12774644Application Date: 2010-05-05
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Publication No.: US08222152B2Publication Date: 2012-07-17
- Inventor: Jun-Hyeub Sun
- Applicant: Jun-Hyeub Sun
- Applicant Address: KR Gyeonggi-do
- Assignee: Hynix Semiconductor Inc.
- Current Assignee: Hynix Semiconductor Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR10-2009-0133388 20091229
- Main IPC: H01L21/467
- IPC: H01L21/467

Abstract:
A method for fabricating a hole pattern includes forming a first hard mask layer over an etch target layer, forming a second hard mask pattern over the first hard mask layer, which are patterned to be a line type in a first direction and have a selective etch ratio to the first hard mask layer, forming a third hard mask layer over the first hard mask layer to bury a space between adjacent ones of the second hard mask pattern, forming a photoresist pattern over the third hard mask layer, which is patterned to be a line type in a second direction; etching the third hard mask layer using the photoresist pattern to form a third hard mask pattern, removing the photoresist pattern, and etching the first hard mask layer using the second and third hard mask patterns.
Public/Granted literature
- US20110159693A1 METHOD FOR FABRICATING HOLE PATTERN Public/Granted day:2011-06-30
Information query
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