Light emitting device and manufacturing method thereof
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United States of America Patent
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Jan 20, 2015
Grant Date -
Feb 23, 2012
app pub date -
Aug 22, 2011
filing date -
Aug 23, 2010
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Abstract
A light emitting device includes a light emitting element that emits light having a wavelength of 250 nm to 500 nm and a fluorescent layer that is disposed on the light emitting element. The fluorescent layer includes a phosphor having a composition expressed by the equation, ((M1−x1Eux1)3−ySi13−zAl3+zO2+uN21−w), and an average particle diameter of 12 μm or more, wherein in the equation, M is an element that is selected from IA group elements, IIA group elements, IIIA group elements, IIIB group elements except Al, rare-earth elements, and IVB group elements, and x1, y, z, u, and w satisfy each of the inequalities simultaneously, that is to say each of the following inequalities is satisfied by the choice of values of the identified paramaters within the noted ranges of 0
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International Classification(s)
Inventor(s)
Inventor Name
Address
# of filed Patents
Total Citations
Albessard, Keiko
Kanagawa, JP
56
363
Fukuda, Yumi
Tokyo, JP
68
487
Kato, Masahiro
Kanagawa, JP
438
2356
Matsuda, Naotoshi
Kanagawa, JP
67
668
Mitsuishi, Iwao
Tokyo, JP
53
533
Nunoue, Shinya
Chiba, JP
312
3280
Okada, Aoi
Tokyo, JP
35
173
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