PHOTOSENSITIVE RESIN COMPOSITION FOR OPTICAL WAVEGUIDE, PHOTOCURABLE FILM FOR FORMING CORE LAYER OF OPTICAL WAVEGUIDE, AND OPTICAL WAVEGUIDE AND HYBRID FLEXIBLE PRINTED WIRING BOARD FOR OPTICAL AND ELECTRIC TRANSMISSION USING THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a photosensitive resin composition for an optical waveguide, which has favorable low tackiness, high transparency and a low loss and achieves cost reduction while maintaining good R-to-R (roll-to-roll) adaptability and a high-resolution patterning property as a material for forming an optical waveguide, particularly, a material for forming a core layer.SOLUTION: The photosensitive resin composition for an optical waveguide comprises a resin component and a photoacid generator. The resin component comprises an epoxy resin component including both of an aromatic epoxy resin and an aliphatic epoxy resin, in which the aromatic epoxy resin is included by 55 wt.% or more and less than 80 wt.% in the whole epoxy resin component, and the aliphatic epoxy resin is included by more than 20 wt.% and 45 wt.% or less.SELECTED DRAWING: None