Resist exposure system and method of forming a pattern on a...

Radiation imagery chemistry: process – composition – or product th – Effecting frontal radiation modification during exposure,...

Reexamination Certificate

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C430S270100, C430S905000, C430S907000, C430S910000, C430S945000

Reexamination Certificate

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10921709

ABSTRACT:
A resist exposure system and a method of forming a pattern on a resist are provided and include an exposure source, a photoresist composition, and a mask positioned therebetween. The resist composition comprises a first photoresist X and a second photoresist Y. The first photoresist X absorbs at a higher wavelength than the second photoresist Y. The second photoresist Y has a lower glass transitional temperature than the first photoresist X.

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T.S. Ravi, K. Konjuh, D. Mordo, K. MacWilliams, W.G.M. Van Den Hoek, Pearl™—PECVD Anti-Reflective Layer for Sub 0.35 μm Lithography, Novellus Technical Paper, Dec. 1997, Novellus Systems Inc.
Metrology Supporting Deep Ultraviolet Lithography, http://www.eeel.nist.gov/810.01/lithography—deep.html.

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