Cathode-ray tube fluorescent material and its method of manufact

Details Cathode-ray tube fluorescent material and its method of manufact Cathode-ray tube fluorescent material and its method of manufact

1994-03-10

1995-07-25

Bell, Mark L.

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

2523014R, 2523016S, 427 64, 427 68, C09K 1108

Patent

active

054359384

ABSTRACT:
Electrolytes are attached to fluorescent particle surfaces to prevent open spots in cathode-ray tube coatings dried at high temperatures. Electrolytes that are sulfates, nitrates, or chlorides of alkali or alkaline-earth metals are added to a liquid suspension of fluorescent particles which have passed through a cleaning step. Electrolytes are added to the suspension to make the conductivity of the clear top liquid greater than 30 .mu..OMEGA..sup.-1 cm.sup.-1. The fluorescent particle preparation process is finished with a final dehydration and drying step.

REFERENCES:
patent: 2651584 (1953-09-01), Longini et al.
patent: 5145743 (1992-09-01), Beutel et al.

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