发明名称 |
Phosphor, light-emitting device using same, image display and illuminating device |
摘要 |
The present invention relates to a phosphor represented by the following general formula (I), comprising: a composite oxide containing a divalent and trivalent metal elements as a host crystal; and at least Ce as an activator element in said host crystal, wherein the phosphor has a maximum emission peak in a wavelength range of from 485 nm to 555 nm in the emission spectrum at room temperature: <?in-line-formulae description="In-line Formulae" end="lead"?>M1aM2bM3cOd (I)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein M1 represents an activator element containing at least Ce; M2 represents a divalent metal element; M3 represents a trivalent metal element; <u style="single">a is a number within a range of 0.0001<=<u style="single">a<=0.2; b is a number within a range of 0.8<=b<=1.2; c is a number within a range of 1.6<=c<=2.4; and d is a number within a range of 3.2<=d<=4.8. Further, a light emitting device comprising said phosphor and a display and a lighting system having said light emitting device as a light source are disclosed. In accordance with the present invention, a phosphor which can be easily produced and can provide a light emitting device having a high color rendering, a light emitting device comprising the phosphor, and a display and a lighting system comprising the light emitting device as a light source can be provided.
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申请公布号 |
US2009026920(A1) |
申请公布日期 |
2009.01.29 |
申请号 |
US20050631390 |
申请日期 |
2005.06.30 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
SHIMOMURA YASUO;KIJIMA NAOTO |
分类号 |
H01J63/04;C09K11/78;H01J1/62 |
主分类号 |
H01J63/04 |
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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