Curable resin composition for light guide, curable dry film for light guide

A curable resin, optical waveguide technology, applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems of dry film cracking and cracking, optical waveguide performance degradation, dry film storage stability and other problems such as insufficient performance

Inactive Publication Date: 2007-02-28
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Assuming that this resin composition is used as a dry film, as in the dry film described in JP-A-2003-202437, when the composition is applied to a release paper such as PET for lamination and the lamination In the operation of curling the dry film or attaching it to the substrate to form an optical waveguide, there are defects such as dry film cracking and cracks, and the performance of the optical waveguide decreases.
In addition, when the resin composition for an optical waveguide described in JP-A-2003-149475 is used as a solution, the optical waveguide finally obtained has insufficient mechanical properties such as processability and bending. During processing, defects such as cracks and cracks occur, and the performance of the optical waveguide decreases.
[0007] Furthermore, the substances described in either of the two gazettes have the problem of corrosion of stainless steel storage containers and the like due to carboxyl groups, and in addition, performance such as storage stability of the dry film is not sufficient.

Method used

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  • Curable resin composition for light guide, curable dry film for light guide
  • Curable resin composition for light guide, curable dry film for light guide
  • Curable resin composition for light guide, curable dry film for light guide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] A solution containing the above-mentioned curable resin composition 1 for an optical waveguide was applied on a plastic substrate by spin coating, and dried at 80° C. for 30 minutes. Then, through a photomask having a line pattern with a width of 30 μm, irradiate with a wavelength of 365 nm and a luminous intensity of 10 mW / cm 2 UV light for 100 seconds to make it UV curable. Then, the substrate having the resin composition layer irradiated with ultraviolet rays was immersed in a developer composed of 1.8% tetramethylammonium hydroxide aqueous solution (TMAH aqueous solution) to dissolve the unexposed part of the resin composition, and then dried. . Thus, a core portion having a linear pattern with a width of 30 μm was formed. As a result, a thin core-shaped substance can be formed, and the contours of the concave portions among the convex portions of the core portion are clearly defined. In addition, such a substance having a well-defined concave portion does not ca...

Embodiment 2～4

[0113] A core portion was formed in the same manner as in Example 1, except that each solution containing the above-mentioned curable resin compositions 2 to 4 for optical waveguides was used. As a result, a thin core-shaped substance can be formed, and the contours of the concave portions among the convex portions of the core portion are clearly defined. In addition, such a substance having a well-defined concave portion does not cause the core portion to be deformed by the upper cladding layer or the transmission loss of the optical waveguide to be reduced due to the inclusion of air bubbles in the concave portion.

Embodiment 5

[0115] The above-mentioned curable dry film 1D for optical waveguide was transferred to the surface of the plastic substrate by the normal-pressure hot roll bonding method (temperature: 100° C.), and the polyethylene terephthalate film was peeled off. Then, through a photomask having a line pattern with a width of 30 μm, irradiate with a wavelength of 365 nm and a luminous intensity of 10 mW / cm 2 UV light for 100 seconds to make it UV curable. Then, this was immersed in a developing solution composed of a 1.8% TMAH aqueous solution to dissolve the unexposed portion of the dry film, and then dried. Thus, a core portion having a linear pattern with a width of 30 μm was formed. As a result, a thin core-shaped substance can be formed, and the contours of the concave portions among the convex portions of the core portion are clearly defined. In addition, such a substance having a well-defined concave portion does not reduce the transmission loss of the optical waveguide due to de...

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Abstract

A curable resin composition for light guide characterized by containing as essential components copolymer (A) from radically polymerizable compound (a) having in its molecule an acid group of acid anhydride group and / or acid group blocked and a radically polymerizable unsaturated group and other radically polymerizable compound (b); polymerizable unsaturated compound (B); and polymerization initiator (C). There is further provided a curable dry film for light guide consisting of this composition; and provided a light guide having at least one of underpart clad layer (13), core portion (15) and upper part clad layer (17) formed therefrom.

Description

technical field [0001] The present invention relates to a curable resin composition for an optical waveguide, a curable dry film for an optical waveguide, an optical waveguide, and a method for forming a core portion for an optical waveguide. Background technique [0002] In recent years, an optical waveguide as an optical transmission medium has attracted attention due to demands for larger capacity and higher speed of information processing in optical communication systems and computers. Such optical waveguides are typified by quartz-based waveguides. However, in order to manufacture a quartz-based waveguide, a special manufacturing device must be used, and the manufacturing time is long. [0003] On the other hand, there is a literature that proposes a radiation-curable dry film for forming an optical waveguide and a method of manufacturing an optical waveguide using it, that is, instead of a quartz-based waveguide, the thin film is laminated on the substrate and irradia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/02C08F2/44G03F7/033G02B6/12G02B6/122G02B6/138
CPCG02B6/138G03F7/033Y10T428/31855G02B6/1221C08F265/02C08J5/18C08L101/00C08L2203/16
Inventor 今井玄儿樋口贵祐
Owner KANSAI PAINT CO LTD
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