Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2008-04-22
2008-04-22
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S30160R, C313S582000, C313S584000, C313S486000
Reexamination Certificate
active
07361289
ABSTRACT:
The present invention provides a green light-emitting phosphor for a light-emitting device excited by vacuum ultraviolet rays, a light-emitting device, and a method of preparing the same. The green light-emitting phosphor is represented by the formula AxB4-2xO6-2x:Mny, wherein A is Mg, Zn, Ca, or Li, B is Al or Ga, 0.6≦x≦1.4, and 0.01≦y≦0.1. The phosphor has excellent brightness, color purity, and discharging characteristics, and a short decay time. In one embodiment, the phosphor has a stable spinel structure, and is stable with regard to external influence such as heat, ion bombardment, and vacuum ultraviolet rays. Longer-lived light-emitting devices are also disclosed.
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Choi Ick-Kyu
Kim Yong-Seon
Kwon Seon-Young
Park Kyu-chan
Christie Parker & Hale LLP
Koslow C. Melissa
Samsung SDI & Co., Ltd.
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