Light emitting device having surface-modified quantum dot luminophores
US-9196785-B2 · Nov 24, 2015 · US
Light emitting device having strontium oxyorthosilicate type phosphors
US8963173B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8963173-B2 |
| Application number | US-97299610-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 20, 2010 |
| Priority date | Dec 21, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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Exemplary embodiments of the present invention relate to light emitting devices including strontium oxyorthosilicate-type phosphors. The light emitting device includes a light emitting diode, which emits light in the UV or visible range, and phosphors disposed around the light emitting diode to absorb light emitted from the light emitting diode and emit light having a different wavelength from the absorbed light. The phosphors include an oxyorthosilicate phosphor having a general formula of Sr 3-x-y-z Ca x M II y SiO 5 : Eu z with a calcium molar fraction in the range of 0<x≦0.05.
First claim
Opening claim text (preview).
What is claimed is: 1. A light emitting device, comprising: a light emitting diode; and phosphors to absorb light emitted from the light emitting diode and emit light having a different wavelength from the absorbed light, the phosphors having the general formula M I 3-x-y-z Ca x M II y SiO 5 : Eu z , wherein, M I is at least one element selected from Sr and Ba; M II is at least one element selected from Mg, Ba, Cu, Zn, and Mn; 0<x≦0.05; 0≦y≦0.5; and 0<z≦0.25, w…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- C09K11/77342Primary
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8963173B2 cover?
- Exemplary embodiments of the present invention relate to light emitting devices including strontium oxyorthosilicate-type phosphors. The light emitting device includes a light emitting diode, which emits light in the UV or visible range, and phosphors disposed around the light emitting diode to absorb light emitted from the light emitting diode and emit light having a different wavelength from …
- Who is the assignee on this patent?
- Lee Chung Hoon, Tews Walter, Roth Gundula, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C09K11/77342. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 24 2015 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).