Composition for optical waveguide, dry film for optical waveguide and optical waveguide using epoxies
US-2019212495-A1 · Jul 11, 2019 · US
Resin composition for optical waveguide cores, and dry film, optical waveguide core and photoelectric composite wiring board, each of which uses same
US11680163B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11680163-B2 |
| Application number | US-201816755284-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2018 |
| Priority date | Oct 13, 2017 |
| Publication date | Jun 20, 2023 |
| Grant date | Jun 20, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a resin composition for optical waveguide cores, the resin composition including liquid epoxy resin, and solid epoxy resin, in which a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A resin composition for optical waveguide cores, the resin composition comprising: liquid epoxy resin; and solid epoxy resin, wherein a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less, a ratio of the liquid epoxy resin to the entire resin composition is 5 to 23 mass %, and a difference between an average refractive index of the liquid epoxy resin and an average refractive index of the entire resin composition is 0.04 or less. 2. The resin composition for optical waveguide cores according to claim 1 , wherein a difference between a refractive index of an epoxy resin that is contained in the resin composition and has a highest refractive index and a refractive index of an epoxy resin that is contained in the resin composition and has a lowest refractive index is 0.100 or less. 3. The resin composition for optical waveguide cores according to claim 1 , wherein the liquid epoxy resin includes two or more kinds of epoxy resins. 4. A dry film for optical waveguide cores, the dry film comprising a dried product of the resin composition for optical waveguide cores according to claim 1 . 5. An optical waveguide core comprising a cured product of the resin composition for optical waveguide cores according to claim 1 . 6. A photoelectric composite wiring board comprising the optical waveguide core according to claim 5 . 7. An optical waveguide core comprising a cured product of the dry film for optical waveguide cores according to claim 4 . 8. A photoelectric composite wiring board comprising the optical waveguide core according to claim 7 .
Assignees
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Classifications
characterised by the core material · CPC title
- G02B6/1221Primary
made from organic materials · CPC title
use in electrical or conductive gadgets · CPC title
- C08L63/00Primary
Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
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- What does patent US11680163B2 cover?
- Provided is a resin composition for optical waveguide cores, the resin composition including liquid epoxy resin, and solid epoxy resin, in which a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less.
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02B6/1221. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 20 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).