Phosphor and light emitting device

Details Phosphor and light emitting device Phosphor and light emitting device

2011-04-19

2011-04-19

Koslow, C. Melissa (Department: 1734)

Compositions

Inorganic luminescent compositions

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

C313S503000, C257S096000

Reexamination Certificate

active

07927512

ABSTRACT:
A light emitting device includes a light emitting element1that has a light emission peak wavelength in a range from 300 nm to 530 nm, and a phosphor2that absorbs light from the light emitting element1and converts the wavelength of the light to emit light with a light emission peak wavelength different from the light emitting element. The phosphor is represented by the general formula M15−xEuxM2mM3nO2m+(3/2)n+5where x, m and n fall within ranges 0.0001≦x≦0.3, 1.0≦m≦2.5 and 0≦n≦2.5, M1is at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn, M2is at least one element selected from the group consisting of Si, Ge and Sn, and M3is at least one element selected from the group consisting of B, Al, Ga, In and rare earth elements.

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Japanese Office Action for corresponding JP Application No. 2007-529526, Sep. 14, 2010 (w/ Engilsh translation of relevant part).

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