Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of forming an optical waveguide with an optical path conversion function directly on a substrate by a simple process, the optical waveguide allowing fine processing and having high surface accuracy, and to provide the optical waveguide manufactured by the manufacturing method.SOLUTION: In a method for manufacturing an optical waveguide whose clad part is formed of a positive photosensitive resin, an inclined surface which is formed by film loss in a process of developing the positive photosensitive resin is set to an optical path conversion mirror surface. Preferably, a polysiloxane-based positive photosensitive resin is used as the positive photosensitive resin, and a core part surrounded by the clad part is formed of a negative photosensitive resin.
Abstract:
PROBLEM TO BE SOLVED: To provide a photocurable resin composition useful as a hard coating material for an image display surface of an image display device resulting in a cured product having superior adhesion and scratch resistance.SOLUTION: The photocurable resin composition comprises: (A) a polyvalent alcohol (meth)acrylate compound; (B) a photo radical generator or a heat radical generator; and (C) an epoxy (meth)acrylate compound having a specified structure, further preferably, (D) a phosphoric acid (meta)acrylate compound and/or (F) another epoxy resin.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical waveguide with less optical loss.SOLUTION: The method for manufacturing an optical waveguide includes the following steps (I) to (III). They are: (I) a step of forming a photocurable resin composition layer 4 containing a photo-radical initiator and a polymerizable compound, and a water-soluble non-photocurable resin composition layer 3, in this order from below, on a lower clad 1 formed on a substrate 2; (II) an exposure step of exposing the photocurable resin composition layer 4 by use of a photomask 6 to form a core part 8; and (III) an alkali development step of removing an unexposed part of the photocurable resin composition layer 4 and the water-soluble non-photocurable resin composition layer 3 with an alkali developing solution.
Abstract:
PROBLEM TO BE SOLVED: To provide a curable resin composition which allows alkali development, yields a cured product excellent in adhesion and scratch resistance, and is useful as a hard coating material for an image display surface of an image display device.SOLUTION: Provided is a curable resin composition containing (A) a polyvalent alcohol acrylate compound, (B) a compound containing an acrylic group or methacrylic group and a carboxyl group in a molecule, (C) a siloxane compound containing a glycidyl group, and (D) a photo-radical generator. The (C) siloxane compound containing a glycidyl group is preferably a compound represented by the general formula (1) or (2), particularly a siloxane compound containing a 3-glycidoxypropyl group. The general formulas (1) and (2) are as described in the description of the claimed invention.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing an optical waveguide that allows fine processing, has high surface accuracy, is manufactured in a simple process, and has an optical path conversion function. SOLUTION: The method of manufacturing the optical waveguide has the optical path conversion function of forming a core part using photo-curable resin or positive type photosensitive resin. The method of manufacturing the optical waveguide has a process of forming an optical path conversion mirror surface by continuously varying the irradiation amount of irradiation light to the photo-curable resin or positive type photosensitive resin. The optical waveguide is manufactured by the manufacturing method. Preferably, the optical waveguide has a clad part and the core part on a substrate or a support film. COPYRIGHT: (C)2010,JPO&INPIT