Invention Application
US20160163584A1 SELF-ALIGNED DOUBLE PATTERNING PROCESS FOR TWO DIMENSIONAL PATTERNS
有权
用于两维图案的自对准双文件处理方法
- Patent Title: SELF-ALIGNED DOUBLE PATTERNING PROCESS FOR TWO DIMENSIONAL PATTERNS
- Patent Title (中): 用于两维图案的自对准双文件处理方法
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Application No.: US14674792Application Date: 2015-03-31
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Publication No.: US20160163584A1Publication Date: 2016-06-09
- Inventor: Lei Yuan , Jia Zeng , Youngtag Woo , Jongwook Kye
- Applicant: GLOBALFOUNDRIES Inc.
- Main IPC: H01L21/768
- IPC: H01L21/768

Abstract:
One method includes forming a mandrel element above a hard mask layer, forming first and second spacers on the mandrel element, removing the mandrel element, a first opening being defined between the first and second spacers and exposing a portion of the hard mask layer and having a longitudinal axis extending in a first direction, forming a block mask covering a middle portion of the first opening, the block mask having a longitudinal axis extending in a second direction different than the first direction, etching the hard mask layer in the presence of the block mask and the first and second spacers to define aligned first and second line segment openings in the hard mask layer extending in the first direction, etching recesses in a dielectric layer disposed beneath the hard mask layer based on the first and second line segment openings, and filling the recesses with a conductive material.
Public/Granted literature
- US09437481B2 Self-aligned double patterning process for two dimensional patterns Public/Granted day:2016-09-06
Information query
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