Solvents and photoresist compositions for 193 nm imaging

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

Reexamination Certificate

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Details

C430S306000, C430S320000, C430S322000, C430S434000, C430S494000

Reexamination Certificate

active

10418740

ABSTRACT:
New photoresists are provided that are suitable for short wavelength imaging, including sub-200 nm, particularly 193 nm. Resists of the invention comprise a polymer that is preferably substantially free of aromatic moieties and comprises photoacid-labile repeat units, a photoactive components such as one or more photoacid generator compounds and a solvent component that comprises methyl isoamyl ketone (5-methyl-2-hexanone).

REFERENCES:
patent: 2002/0031720 (2002-03-01), Nakamura et al.

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