FLUORESCENT SCREEN OF CATHODE-RAY TUBE HAVING HIGH RESOLUTION

FLUORESCENT SCREEN OF CATHODE-RAY TUBE HAVING HIGH RESOLUTION

PURPOSE: To obtain a clear image in which a void is reduced and there is no irregular distribution in light emitting brightness by precipitating and accumulat ing phosphor particles suspended in a polyvinyl alcohol aqueous solution. CONSTITUTION: Phosphor particles are suspended in a polyvinyl alcoh...

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Bibliographische Detailangaben
1. Verfasser: OZAWA RYUJI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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Beschreibung
Zusammenfassung:PURPOSE: To obtain a clear image in which a void is reduced and there is no irregular distribution in light emitting brightness by precipitating and accumulat ing phosphor particles suspended in a polyvinyl alcohol aqueous solution. CONSTITUTION: Phosphor particles are suspended in a polyvinyl alcohol aqueous solution having the concentration of 0.02 to 0.5wt.% and pH of 6.0 to 7.5, and a suspension is obtained. This suspension is injected into a cathode-ray tube vessel, and is rotated at high speed, and after the phosphor particles are accumulated on a face plate, a supernatant is removed and the resulting accumulative is dried.