White light emitting diode

Details White light emitting diode White light emitting diode

2011-06-28

2011-06-28

Koslow, C. Melissa (Department: 1734)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C313S503000, C313S487000, C257S098000

Reexamination Certificate

active

07968005

ABSTRACT:
The inventive white-light emitting diode is characterized in that it comprises a source emitting radiation whose wavelength band ranges from 370 to 420 nm, a first blue and red-light emitting phosphor of formula Ba3(1-x)Eu3xMg1-yMnySi2O8 (1), wherein 0 < x 0,3 and 0 < y 0,3 and a second green-light emitting phosphor. In another embodiment, said diode comprises the same source and a single phosphor whose chemical composition is Ba3(1-x)Eu3xMg1-yMnySi2O8, wherein 0 < x 0,3 et 0 < y 0,3 and which is embodied in the form of a mixture of at least Ba2SiO4, Ba2MgSi2O7 and Ba3MgSi2O8 phases. The inventive diode can be used for a lighting device.

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patent: WO 02/054502 (2002-07-01), None
patent: WO 2005/004202 (2005-01-01), None

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