Resin composition for light guide, solidified dry membrane , light guide and forming method thereof

A technology of optical waveguide and composition, which is applied in the field of optical waveguide, can solve the problems of dry film fracture or rupture, insufficient mechanical properties such as optical waveguide processability, bending property, and inability to obtain transmission characteristics, etc., and achieve low transmission loss Effect

Inactive Publication Date: 2005-07-13
KANSAI PAINT CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the above-mentioned carboxyl group-containing resin is used as a dry film for optical waveguide formation, when the composition is coated on a release paper such as PET and laminated, and when the laminated dry film is wound film, or pasting the dry film on the substrate to form an optical waveguide, etc., the dry film may have defects such as cracks or cracks, which will reduce the performance of the optical waveguide
In addition, in the technology described in the above-mentioned publication, when the upper cladding layer is formed on the surface of the core part and the lower cladding layer using a dry film, there is a possibility that there will be a gap between the depression in the convex part of the core part and the upper cladding layer. voids, the designed core shape cannot be obtained, and thus sufficient transmission characteristics cannot be obtained
[0007] In the resin composition for an optical waveguide described in JP-A-2003-149475, there is no description of using the composition as a dry film for forming an optical waveguide. KOKAI Publication No. 2003-202437 similarly applies the composition to release paper such as PET for lamination, and when winding the laminated dry film, or sticking the dry film on the substrate During processing operations such as forming an optical waveguide, the dry film may have defects such as cracks or cracks, which may degrade the performance of the optical waveguide
In addition, when the resin composition for an optical waveguide described in JP-A-2003-149475 is prepared and used as a solution, the finally obtained optical waveguide has insufficient mechanical properties such as processability and bendability. When the waveguide is installed in the required place or during processing, there may be defects such as breakage or cracking, which will degrade the performance of the optical waveguide
Furthermore, when the dry film is used to form the upper cladding layer on the surfaces of the core portion and the lower cladding layer in the same manner as in JP-A-2003-202437 , the gap between the dimples in the convex portion of the core portion and the upper cladding layer Voids may be generated, the designed core shape cannot be obtained, and thus sufficient transmission characteristics cannot be obtained

Method used

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  • Resin composition for light guide, solidified dry membrane , light guide and forming method thereof
  • Resin composition for light guide, solidified dry membrane , light guide and forming method thereof
  • Resin composition for light guide, solidified dry membrane , light guide and forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0192] Formation of optical waveguides:

[0193] Formation of the lower cladding layer

[0194] The curable resin composition Z-2 for optical waveguides was coated on the surface of the silicon substrate by the spin coating method, and dried at 80° C. for 30 minutes. Then irradiate with a wavelength of 365nm and an illumination of 200mW / cm 2 After 5 seconds of ultraviolet rays, it was thermally cured at 150° C. for 30 minutes to obtain a lower cladding layer with a thickness of 40 μm.

[0195] The formation of the core part (1):

[0196] Next, the curable resin composition Z-1 for an optical waveguide was applied on the upper surface of the lower cladding layer by a spin coating method, and dried at 80° C. for 30 minutes. Then pass through a photomask with a line pattern with a width of 30 μm, and irradiate with a wavelength of 365 nm and an illuminance of 10 mW / cm 2 UV light for 100 seconds to make it radiation cured. Next, the substrate having the resin composition laye...

Embodiment 1-2 and 1-3

[0209] Production and evaluation of dry film:

[0210] Resin compositions Z-1 to Z-2 for optical waveguides were coated on polyethylene terephthalate films (film thickness 25 μm) with a knife-edge applicator, and then dried at 80°C for 30 minutes to prepare optical waveguides. Resin composition dry film. Among them, "○" was used to form a dry film, and "X" was not used to form a dry film. In addition, the formed dry film was transferred onto a silicon substrate by an atmospheric pressure hot roll adhesion method (temperature 100° C.). The results that can be evenly transferred to the silicon substrate are indicated by "○", and those where the dry film part remains on the base film, or cannot be transferred to the silicon substrate, or cracks occur in the transferred film are indicated by "X". The results are shown in Table 3.

[0211] As a result of the above evaluation, in Examples 1-2 and 1-3, curable dry films for optical waveguides having film softening temperatures of ...

Embodiment 1-4

[0216] Formation and evaluation of dry film-based optical waveguides:

[0217] A curable dry film for an optical waveguide was prepared using the curable resin compositions Z-1 and Z-2 for an optical waveguide, and an optical waveguide was formed using the dry film.

[0218] Formation of the lower cladding layer:

[0219] The curable dry film ZD-2 for optical waveguide composed of curable resin composition Z-2 for optical waveguide was transferred to the surface of the silicon substrate by the normal pressure hot roll adhesion method (temperature 100°C), and then irradiated with a wavelength of 365nm , Illumination 200mW / cm 2 After 5 seconds of ultraviolet rays, it was thermally cured at 150° C. for 30 minutes to obtain a lower cladding layer with a thickness of 40 μm.

[0220] The formation of the core part (1):

[0221] Next, the curable dry film ZD-1 for optical waveguide composed of curable resin composition Z-1 for optical waveguide is transferred to the upper surface ...

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Abstract

The present invention provides a curable resin composition for an optical waveguide, which contains, as essential components, a carboxyl group-containing urethane compound (A), a polymerizable unsaturated compound (B), and two or more compounds capable of ring opening in the molecule. A polymeric functional group compound (C), and a radiation polymerization initiator (D); the present invention also provides a method for forming an optical waveguide, the method is by heating the lower cladding layer (I) and the core part (II) A method of manufacturing an optical waveguide by sticking a dry film composed of a thermosetting resin composition on the surface and then curing it to form the upper cladding layer (III), wherein the Tg of the dry film is higher than that of the cured resin forming the core part (II). Tg is lower by 10° C. or more, and the sticking temperature of the dry film is set to a temperature higher than the Tg of the dry film by 10° C. or more.

Description

technical field [0001] The present invention relates to a curable resin composition for an optical waveguide, a curable dry film for forming an optical waveguide, and an optical waveguide obtained using the same, and further relates to a method for forming an optical waveguide and an optical waveguide obtained by the method. Background technique [0002] In recent years, optical waveguides have attracted attention as optical transmission media due to the need for larger capacity and higher speed of information processing in optical communication systems and computers. As the above-mentioned optical waveguide, a quartz-based waveguide is representative, but it has problems such as requiring a special manufacturing apparatus and taking a long time to manufacture. [0003] Japanese Patent Application Laid-Open No. 2003-202437 proposes to laminate a dry film containing a radiation-polymerizable component on a base material, and then irradiate a certain amount of light to cure th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02C08G18/00C08G18/08G02B6/10G02B6/12G02B6/13
CPCC08G18/0823G02B6/1221G02B6/138H05K3/285H05K2203/124G02B6/02G02B6/12
Inventor 樋口贵祐今井玄儿
Owner KANSAI PAINT CO LTD
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