Phosphor, light emitting device, surface light source device, display device and illumination device
US-9200200-B2 · Dec 1, 2015 · US
Phosphor, method for producing the same, and luminescent device using the same
US9399731B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9399731-B2 |
| Application number | US-201313991860-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 2, 2013 |
| Priority date | Dec 14, 2012 |
| Publication date | Jul 26, 2016 |
| Grant date | Jul 26, 2016 |
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Abstract
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A blue phosphor having an emission peak wavelength different from that of conventional blue phosphors, a method for producing the same, and a high-intensity luminescent device using the phosphor are provided. The phosphor of the present invention is represented by a general formula Me a Re b Al c Si d O e N f (Me may contain one or more elements selected from Mg, Ca, Sc, Y, and La as second elements, provided that Sr or Ba is contained as an essential first element, and Re may contain one or more elements selected from Mn, Ce, Tb, Yb, and Sm as second elements, provided that Eu is contained as an essential first element), where the composition ratio represented by a, b, c, d, e, and f has the following relations: a+b=1, 0.005<b<0.25, 1.60<c<2.60, 2.50<d<4.05, 3.05<e<5.00, and 2.75<f<4.40.
First claim
Opening claim text (preview).
What is claimed is: 1. A phosphor represented by a general formula Me a Re b Al c Si d O e N f (Me contains one or more elements selected from Sr and Ba, and Re contains Eu), wherein the composition ratio represented by a, b, c, d, e, and f has the following relations: a+b= 1, 0.005< b< 0.25, 1.60< c< 2.60, 2.45< d< 4.05, 3.05< e< 5.00, and 2.75< f< 4.40: wherein the ratio of c/d and e/f have the following relationships: 0.610< c/d< 0.690,1.00< e/f…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9399731B2 cover?
- A blue phosphor having an emission peak wavelength different from that of conventional blue phosphors, a method for producing the same, and a high-intensity luminescent device using the phosphor are provided. The phosphor of the present invention is represented by a general formula Me a Re b Al c Si d O e N f (Me may contain one or more elements selected from Mg, Ca, Sc, Y, and La as second el…
- Who is the assignee on this patent?
- Denki Kagaku Kogyo Kk, Nat Inst For Materials Science, Denka Company Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K11/0883. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 26 2016 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).