Compositions – Organic luminescent material containing compositions
Reexamination Certificate
2006-02-24
2010-12-28
Patel, Nimeshkumar D (Department: 2879)
Compositions
Organic luminescent material containing compositions
C257S088000, C313S503000, C313S364000
Reexamination Certificate
active
07857992
ABSTRACT:
A white light-emitting lamp (1) includes a semiconductor light-emitting device such as a LED chip (2) which has an emission wavelength of 360 nm or more and 440 nm or less, and a light-emitting part including a blue light-emitting phosphor, a green light-emitting phosphor and a red light-emitting phosphor, which emits white light when excited by light from the LED chip (2). At least one phosphor selected from Eu activated halophosphate phosphors and Eu activated aluminate phosphors is used as the blue light-emitting phosphor, Au and Al activated zinc sulfide phosphor is used as the green light-emitting phosphor, and at least one phosphor selected from Eu and Sm activated lanthanum sulfide phosphors and Cu and Mn activated zinc sulfide phosphors is used as the red light-emitting phosphor.
REFERENCES:
patent: 2006/0071587 (2006-04-01), Yamaguchi et al.
patent: 2009/0272985 (2009-11-01), Ishii et al.
patent: 2000 73052 (2000-03-01), None
patent: 2004 331934 (2004-11-01), None
English Translation of JP2000-073052, published 2000.
English Translation of JP2004-331934, published 2004.
K. Tadatomo, et al., “Development of White LED Fabricated by RGB Phosphor and Near Ultra-Violet LED”, Mitsubishi Cable Industries Journal, pp. 35-41, 2002.
Ishii Tsutomu
Ooya Yasumasa
Shirakawa Yasuhiro
Bowman Mary Ellen
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Patel Nimeshkumar D
Toshiba Materials Co., Ltd.
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