Light-emitting device comprising an EU(II)-activated phosphor

Details Light-emitting device comprising an EU(II)-activated phosphor Light-emitting device comprising an EU(II)-activated phosphor

2006-06-13

2006-06-13

Flynn, Nathan J. (Department: 2826)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

With reflector, opaque mask, or optical element integral...

C257S076000, C252S30140R

Reexamination Certificate

active

07061024

ABSTRACT:
The invention concerns a light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦b≦0.25, 0.0≦c≦0.25, 0.0≦d≦0.25, 0.0≦e≦0.25, 1.5≦x≦2.5, 1.5≦y≦2.5 and 1.5≦z≦2.5. The invention also concerns a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦b≦0.25, 0.0≦c≦0.25, 0.0≦d≦0.25, 0.0≦e≦0.25, 1.5≦x≦2.5, 1.5≦y≦2.5 and 1.5≦z≦2.5. The invention also concerns a phosphor of general formula (Sr1-a-bCabBacMgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦b≦0.25, 0.0≦c≦0.25, 0.0≦d≦0.25, 0.0≦e≦0.25, 1.5≦x≦2.5, 1.5≦y≦2.5 and 1.5 <z<2.5.

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