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Ceramic composite for light conversion, process for production thereof, and light-emitting devices provided with same
US8940187B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940187-B2 |
| Application number | US-201113638021-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2011 |
| Priority date | Mar 31, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite. The ceramic composite for light conversion is a solidification product including a composition that is represented by a specific formula, and has a texture of continuously and three-dimensionally mutually entangled oxide phases including at least two phases of a first phase and a second phase, characterized in that the first phase is a Y 3 Al 5 O 12 fluorescent phase activated with Ce, and the second phase is an Al 2 O 3 phase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product, or characterized in that the first phase is a Y 3 Al 5 O 12 fluorescent phase activated with Gd and Ce, and the second phase is an Al 2 O 3 phase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product.
First claim
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The invention claimed is: 1. A ceramic composite for light conversion, the ceramic composite being a solidification product comprising a composition represented by the formula (1), the composition having a texture of continuously and three-dimensionally mutually entangled oxide phases comprising at least two phases of a first phase and a second phase, characterized in that the first phase is a Y 3 Al 5 O 12 fluorescent phase activated with Ce, and the second phase is an Al 2 O 3…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8940187B2 cover?
- Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite. The ceramic composite for light conversion is a solidificat…
- Who is the assignee on this patent?
- Ohtsubo Hideki, Sakata Shin-Ichi, Ishitobi Shinichi, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7716. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 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).