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Proceedings Paper

ArF Immersion Lithography for 45-nm and beyond
Author(s): Akihiro Yamada
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Paper Abstract

Water-based ArF Immersion Lithography has overcome obstacles and enabled the 45nm node of mass products. Canon has developed immersion exposure system the FPA7000 AS7 for 45nm node. The new platform, the FPA-7000, is designed to cover multiple generations. The lens performance about wavefront aberration of the FPA-7000AS7 is predicted to be less than 4m&lgr;. The illumination performance meets the target required for the 45nm node. A solution tool for optimization is introduced to be connected with the FPA-7000. Moreover, latest studies of immersion, such as nozzle pressure, temperature control and defect inspection result are reported, and also discusses the possibility of high-refractive-index immersion.

Paper Details

Date Published: 14 May 2007
PDF: 10 pages
Proc. SPIE 6607, Photomask and Next-Generation Lithography Mask Technology XIV, 66071G (14 May 2007); doi: 10.1117/12.729263
Show Author Affiliations
Akihiro Yamada, Canon Inc. (Japan)

Published in SPIE Proceedings Vol. 6607:
Photomask and Next-Generation Lithography Mask Technology XIV
Hidehiro Watanabe, Editor(s)

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