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Proceedings Paper

Multilevel imaging system realizing k1=0.3 lithography
Author(s): Akiyoshi Suzuki; Kenji Saitoh; Minoru Yoshii
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Paper Abstract

The pursuit of ultimate resolution by optical lithography has given rise to many new technologies, such as PSM, oblique illumination etc. In order to realize the benefit of these new technologies in practice, a new exposure technology IDEAL is proposed. First exposure is for fine patterns, which are imaged with high contrast and large depth of focus, while second exposure is done with multileveled light distribution. These two exposures collaborate each other to form fine patterns with reasonable focus margin and good 2D profile. Experimental result of logic gate patterns are shown and demonstrate the possibility of k1 equals 0.3 lithography. Using IDEAL, KrF lithography can be extended to 100-110 nm and ArF to 80 nm resolution.

Paper Details

Date Published: 26 July 1999
PDF: 12 pages
Proc. SPIE 3679, Optical Microlithography XII, (26 July 1999); doi: 10.1117/12.354351
Show Author Affiliations
Akiyoshi Suzuki, Canon Inc. (Japan)
Kenji Saitoh, Canon Inc. (Japan)
Minoru Yoshii, Canon Inc. (Japan)


Published in SPIE Proceedings Vol. 3679:
Optical Microlithography XII
Luc Van den Hove, Editor(s)

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