In this paper we highlight the unique challenges associated in developing resist trim / reformation plasma etch process for SAQP integration scheme and summarize our efforts in optimizing the trim etch chemistries, process steps and plasma etch parameters for meeting the mandrel definition targets. Finally, we have shown successful patterning of 30nm pitch patterns via the resist-mandrel SAQP scheme and its implementation for Si-fin formation at 7nm node. |
ACCESS THE FULL ARTICLE
No SPIE Account? Create one
CITATIONS
Cited by 5 scholarly publications.
Etching
Lithography
Optical lithography
Plasma etching
Vacuum ultraviolet
Line edge roughness
Plasma