发明名称 |
Halophosphate phosphor and white light-emitting device |
摘要 |
<p>The present invention provides a blue (blue-green) phosphor that has sufficient emission intensity in the wavelength region around 490 nm and that has high emission luminance at a temperature region reached during LED operation. The present invention also provides a white light-emitting device that uses a high-luminance green phosphor having an emission peak wavelength of 535 nm or greater and that has improved bright blue reproducibility. A phosphor having a chemical composition of general formula [1] has sufficient emission intensity in a wavelength region around 490 nm, and a white light-emitting device that uses such a phosphor has improved bright blue reproducibility.
(In general formula [1], X is Cl; c, d and x are numbers satisfying 2.7 ‰¤ c ‰¤ 3.3, 0.9 ‰¤ d ‰¤ 1.1 and 0.3 ‰¤ x ‰¤ 1.2; and a and b satisfy the conditions a+b = 5-x and 0.12 ‰¤ b/(a+b) ‰¤ 0.4.)</p> |
申请公布号 |
EP2535392(B1) |
申请公布日期 |
2014.09.03 |
申请号 |
EP20120172725 |
申请日期 |
2011.12.26 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
SAKUTA, HIROAKI;KAGAWA, KAZUHIKO;SATOU, YOSHIHITO;SETO, TAKATOSHI;KIJIMA, NAOTO |
分类号 |
H05B33/14;C09K11/73;H01L33/50 |
主分类号 |
H05B33/14 |
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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