Plasma picture screen with red phosphor
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United States of America Patent
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Jun 3, 2003
Grant Date -
Jul 5, 2001
app pub date -
Dec 19, 2000
filing date -
Dec 22, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plasma picture screen fitted with a phosphor layer comprising a red phosphor activated by Eu.sup.3+ shows an improved red color point (x.gtoreq.0.64 and y.ltoreq.0.35) and shorter decay times .tau..sub.1/10 as compared with the standard phosphor (Y,Gd)BO.sub.3. The phosphor according to the invention has a lattice in which the activator Eu.sup.3+ occupies a location which has no inversion symmetry.
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