High-sensitivity oxime ester photopolymerization initiator and photopolymerization composition containing the same

摘要

The present invention provides oxime ester phenylcarbazole compounds useful as photoinitiators for photocrosslinking reactions. Specifically, it has a structure in which a carbon atom that is double-bonded to a nitrogen atom in the structure of the oxime ester is bonded, and is directly bonded to a (C1-C20) alkyl group or (C6-C20) allyl group. Features. Since the compound according to the present invention and the photopolymerization composition containing the compound have improved solubility, excellent photosensitivity, residual film ratio, pattern stability and resist adhesion, LCD black resist, color resist It is useful for overcoats, column spacers, organic insulating films and the like.