Strongly scattering ceramic converter and method for producing same
US-2015329778-A1 · Nov 19, 2015 · US
Light wavelength conversion member and light-emitting device
US11945987B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11945987-B2 |
| Application number | US-201916973367-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 17, 2019 |
| Priority date | Jul 31, 2018 |
| Publication date | Apr 2, 2024 |
| Grant date | Apr 2, 2024 |
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Abstract
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In one aspect of the present disclosure, there is provided an optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al 2 O 3 crystal grains and crystal grains represented by formula X 3 Al 5 O 12 :Ce. In the optical wavelength conversion member 9 , atoms of element X are present also in an Al 2 O 3 crystal grain adjacent to the interface between the Al 2 O 3 crystal grain and an X 3 Al 5 O 12 :Ce crystal grain.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical wavelength conversion member comprising a polycrystalline ceramic sintered body containing, as main components, Al 2 O 3 crystal grains and crystal grains represented by formula X 3 Al 5 O 12 :Ce, wherein X of X 3 Al 5 O 12 :Ce is at least one element selected from the following element group: X: lanthanoids (except for Ce), Y, and Sc; and atoms of element X are present also in an Al 2 O 3 crystal grain adjacent to the interface between the Al 2 O 3 crystal grain and an X 3 Al 5 O 12 :Ce crystal grain, wherein said atoms of element X are present at depths of 1 nm to 20 nm as measured from the surface of the Al 2 O 3 crystal grain adjacent to the interface. 2. A light-emitting device comprising an optical wavelength conversion member as recited in claim 1 and a light-emitting element.
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Classifications
characterised by their material, e.g. binder · CPC title
of wavelength conversion means · CPC title
- H10H20/8512Primary
Wavelength conversion materials · CPC title
- C09K11/7774Primary
Aluminates · CPC title
based on aluminium oxide · CPC title
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- What does patent US11945987B2 cover?
- In one aspect of the present disclosure, there is provided an optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al 2 O 3 crystal grains and crystal grains represented by formula X 3 Al 5 O 12 :Ce. In the optical wavelength conversion member 9 , atoms of element X are present also in an Al 2 O 3 crystal grain adjacent to the…
- Who is the assignee on this patent?
- Ngk Spark Plug Co, Niterra Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10H20/8512. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 02 2024 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).