Semiconductor device manufacturing: process – Chemical etching – Vapor phase etching
Reexamination Certificate
2006-11-28
2009-12-22
Wilczewski, M. (Department: 2822)
Semiconductor device manufacturing: process
Chemical etching
Vapor phase etching
C430S317000, C216S041000, C216S049000, C216S051000, C216S067000, C216S079000, C438S585000, C438S710000
Reexamination Certificate
active
07635649
ABSTRACT:
A method for manufacturing a semiconductor device is provided. The method includes forming a polysilicon layer on a semiconductor substrate, forming an anti-reflection coating on the polysilicon layer, forming a photoresist (PR) layer pattern on the anti-reflection coating, etching the anti-reflection coating using the PR layer pattern as a mask in capacitive coupled plasma (CCP) equipment using CF4, Ar, and O2, so as to cause a reaction by-product generated by etching the anti-reflect coating to be deposited on sidewalls of the PR layer pattern, thereby forming spacers, and etching the polysilicon layer using the PR layer pattern and the spacers as a mask.
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Dongbu Electronics Co. Ltd.
Saliwanchik Lloyd & Saliwanchik
Wilczewski M.
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