Phosphor and light emitting device using the same

Details Phosphor and light emitting device using the same Phosphor and light emitting device using the same

2007-02-01

2009-10-27

Lorengo, Jerry (Department: 1793)

Compositions

Inorganic luminescent compositions

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

C252S30140R, C252S30140H, C313S302000

Reexamination Certificate

active

07608202

ABSTRACT:
There is provided a phosphor emitting light of high brightness and having high weatherability, which has a composition represented by the following general formula:in-line-formulae description="In-line Formulae" end="lead"?(M11−yRy)aMgM2bM3cOa+2b+(3/2)cX2in-line-formulae description="In-line Formulae" end="tail"?wherein M1is at least one element selected from the group consisting of Ca, Sr, Ba, Zn and Mn, M2is at least one element selected from the group consisting of Si, Ge and Sn, M3is at least one element selected from the group consisting of B, Al, Ga and In, X is at least one element selected from the group consisting of F, Cl, Br and I, R is at least one element selected from the group consisting of rare earth elements with Eu being an inevitable element, and y, a, b and c satisfy the following relationships of 0.0001≦y≦0.3, 7.0≦a<10.0, 3.0≦b<5.0 and 0≦c<1.0.

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