Pigment-attached phosphor
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United States of America Patent
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Aug 20, 1991
Grant Date -
N/A
app pub date -
Dec 19, 1989
filing date -
Aug 25, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pigment-attached phosphor in which pigment particles are attached to the surfaces of phosphor particles by a binder, the binder being 0.01 to 1.0 parts by weight and preferably 0.05 to 0.80 parts by weight of gelatin and 0.01 to 0.5 parts by weight and preferably 0.02 to 0.40 parts by weight of urea resin, all against 100 parts by weight of phosphor, the weight ratio of the gelatin and urea resin being within a range of 1:1 to 10:1 and preferably 1:1 to 8:1. The gelatin and urea resin ensure a strong and better attachment of the pigment particles to the surfaces of the phosphor particles.
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