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Proceedings Paper

Photoresists for microlithography, or The Red Queen's Race
Author(s): Ralph R. Dammel
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Paper Abstract

Photolithography is a key component of the industry's ability to continue to shrink devices according to Moore's Law, and any improvements immediately translate into large economic benefits for the industry. The relative contribution of the wetware, i.e., the photoresists and other chemicals used in the photolithography step, vs. the contribution of the exposure tool development is investigated by expressing the resist performance improvement as a numerical aperture (NA). Using this equivalent NA concept, it is shown that the contribution from resist improvements has historically outpaced that from stepper NA improvements. However, R&D expenditures for hardware and wetware have consistently been at greatly different levels. While part of that difference is probably intrinsic in the cost structure of the respective development efforts, it is suggested that the relative amount of spending on resist R&D has historically not been at a level that optimizes the overall return for the industry.

Paper Details

Date Published: 24 July 2002
PDF: 10 pages
Proc. SPIE 4690, Advances in Resist Technology and Processing XIX, (24 July 2002); doi: 10.1117/12.474159
Show Author Affiliations
Ralph R. Dammel, Clariant Corp. (United States)


Published in SPIE Proceedings Vol. 4690:
Advances in Resist Technology and Processing XIX
Theodore H. Fedynyshyn, Editor(s)

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