Dry film for optical waveguide formation, optical waveguide, and process for producing the same

• Main Authors: MAEDA, YUKIO, ERIYAMA, YUUICHI, HUANG, FU-JUN
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2008
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTROGRAPHY; GENERAL PROCESSES OF COMPOUNDING; HOLOGRAPHY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS THEREFOR; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

A dry film from which an optical waveguide having high dimensional accuracy, satisfactory transmission characteristics, and excellent flex resistance can be easily produced in a short time. The dry film (1) comprises a base film (2), an uncured photosensitive resin composition layer (3), and a cover film (4) which have been superposed in this order. The photosensitive resin composition layer (3) comprises (A) a polymer comprising repeating units represented by the following formulae (1) and (2): (1) (2) (wherein R1 and R2 each independently is hydrogen or alkyl; R3 is (meth)acryloyl; X is a single bond or a divalent organic group; and Y is an unpolymerizable organic group), (B) a compound which contains a linear structure formed by the reaction of a polyol compound with a polyisocyanate compound and having urethane bonds repeatedly and has two to six (meth)acryloyl groups, (C) a compound having one or more ethylenically unsaturated groups per molecule, and (D) a photo-radical polymerization initiator.