High brightness orange-yellow-emitting electroluminescent phosphor and method of making
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United States of America Patent
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Jan 27, 2004
Grant Date -
N/A
app pub date -
Sep 5, 2002
filing date -
Sep 5, 2002
priority date (Note) -
Expired
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Abstract
An orange-yellow-emitting zinc sulfide-based electroluminescent phosphor is described wherein the phosphor has a brightness of greater than 10 foot-Lamberts. More particularly, the phosphor has a brightness of at least about 13 foot-Lamberts and an x color coordinate from about 0.51 to about 0.56 and a y color coordinate from about 0.42 to about 0.48. The zinc sulfide phosphor is activated with manganese, copper, chlorine, and a metal selected from gold and antimony.
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