Method of producing aluminate fluorescent material, aluminate fluorescent material and light emitting device
US-2019330526-A1 · Oct 31, 2019 · US
Method of producing aluminate fluorescent material, aluminate fluorescent material and light emitting device
US11142686B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11142686-B2 |
| Application number | US-201916508974-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 11, 2019 |
| Priority date | Sep 28, 2016 |
| Publication date | Oct 12, 2021 |
| Grant date | Oct 12, 2021 |
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Abstract
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Provided are a method of producing an aluminate fluorescent material, an aluminate fluorescent material and a light emitting device. The production method includes heat-treating a mixture prepared by mixing a compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr and Ca, a Mg-containing compound not acting as a flux, a Mn-containing compound, an Al-containing compound, a first flux containing at least one alkali metal element selected from the group consisting of Na, K, Rb and Cs, and a Mg-containing second flux to give an aluminate fluorescent material.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of producing a fluorescent material, comprising: heat-treating a mixture prepared by mixing a compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr and Ca, a Mg-containing compound not acting as a flux, a Mn-containing compound, an Al-containing compound, a first flux containing at least one alkali metal element selected from the group consisting of Na, K, Rb and Cs, and a Mg-containing second flux to obtain the fluorescent material. 2. The method of producing a fluorescent material according to claim 1 , wherein the compound containing at least one alkaline earth metal element comprises a Ba-containing compound. 3. The method of producing a fluorescent material according to claim 1 , wherein the first flux containing at least one alkali metal element comprises a Na-containing compound and/or a K-containing compound. 4. The method of producing a fluorescent material according to of claim 1 , wherein in the mixture, a molar amount of Mg in the Mg-containing compound not acting as a flux is in a range of 0 mol % or more and 69 mol % or less relative to a molar amount of the alkaline earth metal element, and a molar amount of Mg in the Mg-containing second flux is in a range of 1 mol % or more and 70 mol % or less. 5. The method of producing a fluorescent material according to of claim 1 , wherein the Mg-containing second flux comprises magnesium fluoride. 6. The method of producing a fluorescent material according to claim 5 , wherein a content of the magnesium fluoride is in a range of 1 mol % or more and 70 mol % or less relative to the molar amount of the alkaline earth metal element contained in the mixture. 7. The method of producing a fluorescent material according to claim 1 , wherein a content of the first flux is in a range of 0.2 mol % or more and less than 30.0 mol % relative to the molar amount of the alkaline earth metal element contained in the mixture.
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between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title
Die-attach connectors and bond wires · CPC title
characterised by their shape, e.g. plate or foil · CPC title
Wavelength conversion materials · CPC title
- C09K11/643Primary
with alkaline earth metals · CPC title
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- What does patent US11142686B2 cover?
- Provided are a method of producing an aluminate fluorescent material, an aluminate fluorescent material and a light emitting device. The production method includes heat-treating a mixture prepared by mixing a compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr and Ca, a Mg-containing compound not acting as a flux, a Mn-containing compound, …
- Who is the assignee on this patent?
- Nichia Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K11/643. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 12 2021 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).