Method of making picture tube fluorescent screen

Details Method of making picture tube fluorescent screen Method of making picture tube fluorescent screen

1982-09-20

1983-12-27

Hoffman, James R.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

Using specified radiation-sensitive composition other than a...

427 64, 427 68, G03C 500

Patent

active

044231288

ABSTRACT:
There are disclosed a composition for making a picture tube fluorescent screen characterized by essentially consisting of a light-sensitive resin at least having recurring units (1) and (2) represented by the formulas: ##STR1## wherein R and X.sup.- have the same meanings as defined in the specification, and CaS-based phosphor particles surface-coated with SiO.sub.2 which are dispersed in an aqueous medium, and a method of making a picture tube fluorescent screen using the same.
According to this invention, it is possible to make a picture tube exhibiting an excellent light emitting efficiency and a contrast by a simple process.

REFERENCES:
patent: 4287229 (1981-09-01), Watanabe et al.
patent: 4339524 (1982-07-01), Ichimura et al.

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