Photosensitive resin composition for optical waveguide, photocurable film for formation of optical waveguide core layer, optical waveguide produced by using the resin composition or the photocurable film, and hybrid flexible printed wiring board for optical/electrical transmission
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United States of America Patent
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Jun 5, 2018
Issued Date -
Feb 9, 2017
app pub date -
Apr 14, 2015
filing date -
Apr 28, 2014
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Abstract
The present invention provides an optical waveguide photosensitive resin composition containing a resin component and a photoacid generator, wherein the photoacid generator has a characteristic property (x) such that an absorption limit (O—O transition energy) calculated based on the shape of an ultraviolet spectrum obtained by spectrometrically analyzing a 0.1 wt % propylene carbonate solution of the photoacid generator by means of an ultraviolet/visible spectrophotometer is 3.5 to 4.1 eV. Where an optical waveguide core layer is formed by using the inventive optical waveguide photosensitive resin composition, for example, the optical waveguide core layer has a lower loss, and is excellent in patternability and reflow resistance.
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