Invention Grant
- Patent Title: Line end shortening reduction during etch
- Patent Title (中): 刻蚀期间线端缩短缩短
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Application No.: US12165539Application Date: 2008-06-30
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Publication No.: US08668805B2Publication Date: 2014-03-11
- Inventor: Gowri Kota , Frank Y. Lin , Qinghua Zhong
- Applicant: Gowri Kota , Frank Y. Lin , Qinghua Zhong
- Applicant Address: US CA Fremont
- Assignee: Lam Research Corporation
- Current Assignee: Lam Research Corporation
- Current Assignee Address: US CA Fremont
- Agency: Beyer Law Group LLP
- Main IPC: C23F1/00
- IPC: C23F1/00 ; H01L21/306

Abstract:
A semiconductor device may be formed by the method comprising providing a patterned photoresist mask over the etch layer, the photoresist mask having at least one photoresist line having a pair of sidewalls ending at a line end, placing a coating over the at least one photoresist line comprising at least one cycle, wherein each cycle comprises: a) depositing a polymer layer over the photoresist line, wherein an amount of polymer at the line end is greater than an amount of polymer on the sidewalls, and b) hardening the polymer layer, and etching features into the etch layer through the photoresist mask, wherein a line end shortening (LES) is less than or equal to 1.
Public/Granted literature
- US20080268211A1 LINE END SHORTENING REDUCTION DURING ETCH Public/Granted day:2008-10-30
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