Glass composition, glass fibers, glass cloth, and method for producing glass fibers
US-2019144329-A1 · May 16, 2019 · US
Glass for use in wavelength conversion material, wavelength conversion material, wavelength conversion member, and light-emitting device
US11804577B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11804577-B2 |
| Application number | US-201816638784-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 22, 2018 |
| Priority date | Sep 27, 2017 |
| Publication date | Oct 31, 2023 |
| Grant date | Oct 31, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO 2 , 1 to 30% B 2 O 3 , over 4 to 20% Al 2 O 3 , 0.1 to 10% Li 2 O, 0 to below 9% Na 2 O+K 2 O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.
First claim
Opening claim text (preview).
The invention claimed is: 1. A wavelength conversion member including a phosphor dispersed in a glass matrix, the glass matrix containing, in terms of % by mass, 30 to 75% SiO 2 , 1 to 30% B 2 O 3 , over 4 to 20% Al 2 O 3 , 0.1 to 10% Li 2 O, 0.1 to 10% BaO, 0 to below 9% Na 2 O+K 2 O, 0.1 to 10% MgO+CaO+SrO+BaO+ZnO, and 0.3 to 1.2% F 2 . 2. The wavelength conversion member according to claim 1 , the glass matrix being substantially free of a lead component and an arsenic component. 3. The wavelength conversion member according to claim 1 , the glass matrix further containing, in terms of % by mass, 0 to 10% ZrO 2 . 4. The wavelength conversion member according to claim 1 , the glass matrix having a softening point of 750° C. or lower. 5. The wavelength conversion member according to claim 1 , the glass matrix having a level of coloration λ 80 of 400 nm or less. 6. The wavelength conversion member according to claim 1 , wherein the phosphor is at least one selected from nitride phosphor, oxynitride phosphor, oxide phosphor, sulfide phosphor, oxysulfide phosphor, halide phosphor, and aluminate phosphor. 7. A light-emitting device comprising the wavelength conversion member according to claim 1 and a light source operable to irradiate the wavelength conversion member with excitation light.
Assignees
Inventors
Classifications
- H10H20/8513Primary
having two or more wavelength conversion materials · CPC title
Wavelength conversion means · CPC title
Improving the yield, e-g- reduction of reject rates · CPC title
Encapsulations · CPC title
Powdered glass (C03C8/02 takes precedence); Bead compositions · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11804577B2 cover?
- Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by …
- Who is the assignee on this patent?
- Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification H10H20/8513. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 31 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).