White light apparatus with enhanced color contrast
US-9954145-B2 · Apr 24, 2018 · US
Red light emitting phosphor, method for producing the same and light emitting device package including the same
US9982192B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9982192-B2 |
| Application number | US-201414780261-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 28, 2014 |
| Priority date | Oct 21, 2013 |
| Publication date | May 29, 2018 |
| Grant date | May 29, 2018 |
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Abstract
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Disclosed are a phosphor, in particular, a red light emitting phosphor, a method for producing the same and a light emitting device package including the same. Provided is a red light emitting phosphor emitting light having a main absorption band in a blue wavelength range and a main peak in a red wavelength range, the red light emitting phosphor being represented by the following Formula 1. (Sr 1−x Eu x )Lu 2 O 4 [Formula 1]
First claim
Opening claim text (preview).
The invention claimed is: 1. A red light emitting phosphor emitting light having a main absorption band in a blue wavelength range and a main peak in a red wavelength range, the red light emitting 5 phosphor represented by the following Formula 1, (Sr 1−x Eu x )Lu 2 O 4 [Formula 1] wherein x is 0.001 to 0.1. 2. The red light emitting phosphor according to claim 1 , wherein light of the red wavelength range has a peak wavelength of 610 nm to 620 nm. 3. The red light emitting phosphor according to claim 1 , wherein the blue wavelength range comprises at least a part of a range of 350 nm to 500 nm. 4. The red light emitting phosphor according to claim 1 , wherein x is 0.005 to 0.03. 5. A method for producing a red light emitting phosphor, the method comprising: synthesizing the red light emitting phosphor using Sr 3 N 2 , SrCO 3 , Lu 2 O 3 and Eu 2 O 3 as a raw material such that the red light emitting phosphor comprises a compound represented by the following Formula 1 in which europium (Eu) is substituted with strontium (Sr), wherein synthesizing the red light emitting phosphor is performed at a pressure of 9 atm or more, and wherein synthesizing the red light emitting phosphor is performed at a temperature of 1,000° C. or higher, (Sr 1−x Eu x )Lu 2 O 4 , [Formula 1] wherein x is 0.001 to 0.1. 6. The method according to claim 5 , wherein the red light emitting phosphor emits light having a main peak in a red wavelength range, and wherein light of the red wavelength range has a peak wavelength of 610 nm to 620 nm. 7. The method according to claim 5 , wherein the red light emitting phosphor emits light having a main absorption band in a blue wavelength range, and wherein the blue wavelength range comprises at least a part of a range of 350 nm to 500 nm. 8. The method according to claim 5 , wherein x is 0.005 to 0.03. 9. A light emitting device package comprising the phosphor represented by Formula 1 according to claim 1 .
Assignees
Inventors
Classifications
- C09K11/7787Primary
Oxides (C09K11/7785 takes precedence) · CPC title
Electricity · mapped topic
Wavelength conversion means · CPC title
Wavelength conversion materials · CPC title
containing beryllium, magnesium, alkali metals or alkaline earth metals · CPC title
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- What does patent US9982192B2 cover?
- Disclosed are a phosphor, in particular, a red light emitting phosphor, a method for producing the same and a light emitting device package including the same. Provided is a red light emitting phosphor emitting light having a main absorption band in a blue wavelength range and a main peak in a red wavelength range, the red light emitting phosphor being represented by the following Formula 1. …
- Who is the assignee on this patent?
- Lg Electronics Inc
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7787. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 29 2018 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).