Solvent mixtures for antireflective coating compositions for...

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

Reexamination Certificate

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C430S326000, C430S330000, C430S271100, C430S272100, C430S313000, C430S323000, C528S259000, C525S154000, C522S111000, C522S164000, C522S166000

Reexamination Certificate

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07824844

ABSTRACT:
The invention relates to an antireflective coating composition capable of being coated beneath a photoresist layer, where the antireflective coating composition comprises a polymeric crosslinker and a solvent mixture, where the solvent mixture comprises at least one primary organic solvent and at least one secondary organic solvent selected from any of structures 1, 2 and 3,where, R1, R3, and R4, are selected from H and C1-C6alkyl, and R2, R5, R6, R7, R8, and R9are selected from C1-C6alkyl, and n=1-5. The invention also relates to an antireflective coating composition capable of being coated beneath a photoresist layer, where the antireflective coating composition comprises a polymeric crosslinker and a solvent mixture, where the solvent mixture comprises at least 2 organic solvents, and where the antireflective coating composition has a liquid particle count at 0.2 micron of less than 100/ml after accelerated aging.

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