Method of manufacturing a cathode ray tube phosphor screen

Details Method of manufacturing a cathode ray tube phosphor screen Method of manufacturing a cathode ray tube phosphor screen

1993-05-05

1994-11-22

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

430 25, 430 26, 430 27, 430 28, G03C 500

Patent

active

053668340

ABSTRACT:
In a cathode-ray tube phosphor, a layer consisting of a substantially uniform SiO.sub.2 film or an organic film consisting essentially of at least one type of a polymer selected from the group consisting of an acrylic resin, gelatin, alginic acid, chitosan, and a urea resin is formed as a first layer on the surface of a phosphor particle, and a layer containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one member selected from the group consisting of a colloidal silica, an alumina sol, and a titania sol each having a particle size of 50 nm or less is formed as a second layer on the first layer. This phosphor is excellent in oxidation resistance and dispersibility.

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