发明名称 |
LIGHT EMITTING DEVICE AND ILLUMINATION DEVICE |
摘要 |
<p>An LED with a semiconductor light emitting element that emits a blue or a blue-violet light, and a fluorescent material that absorbs some or all of the light emitted from the element and emits a fluorescent light of a wavelength different from the absorbed light. The fluorescent material is a mixed fluorescent material obtained by mixing a first fluorescent material that emits a blue-green or a green light, a second fluorescent material that has a peak emission wavelength longer than that of the first fluorescent material and emits a green or a yellow-green light, a third fluorescent material that has a 1 peak emission wavelength longer than that of the second fluorescent material and emits a yellow-green, a yellow or a yellow-red light, and a fourth fluorescent material that has a peak emission wavelength longer than that of the third fluorescent material and emits a yellow-red or a red light.</p> |
申请公布号 |
EP2056366(B1) |
申请公布日期 |
2013.04.03 |
申请号 |
EP20070805885 |
申请日期 |
2007.07.30 |
申请人 |
FUJIKURA LTD.;NATIONAL INSTITUTE FOR MATERIALS SCIENCE |
发明人 |
KIMURA, NAOKI;SUZUKI, RYUJI;SAKUMA, KEN;HIROSAKI, NAOTO |
分类号 |
H01L33/00;C09K11/08;C09K11/59;C09K11/64;H01L33/50 |
主分类号 |
H01L33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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