Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2005-08-03
2008-09-23
Koslow, C. Melissa (Department: 1793)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C313S503000, C428S690000, C428S917000
Reexamination Certificate
active
07427367
ABSTRACT:
The present invention provides thioaluminate phosphor compounds BaAl2S4and BaAl4S7with novel crystal structures that have higher luminosity and improved color coordinates. The invention is also directed to rare earth element activated barium thioaluminate phosphor films comprising a phosphor compound having a novel crystal lattice structure that increases the electroluminescent light emission from the film. The phosphor films are for use in electroluminescent displays and in particular, thick film dielectric electroluminescent displays.
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Kamkar Morad
Stiles James Alexander Robert
Fay Sharpe LLP
Ifire Technology Corp.
Koslow C. Melissa
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