Method for manufacturing a screen for a cathode ray tube

Details Method for manufacturing a screen for a cathode ray tube Method for manufacturing a screen for a cathode ray tube

1992-07-29

1994-03-01

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

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

430 23, G03C 500

Patent

active

052906485

ABSTRACT:
A method for manufacturing a screen for a cathode ray tube is provided comprising the steps of forming a first phosphor layer through coating a phosphor slurry containing a first phosphor, polyvinyl alcohol having a polymerization degree of 1,500 to 2,000 and distilled water on the inner surface of a panel, drying, exposing and developing the first phosphor layer, and then forming a second phosphor layer through coating a phosphor slurry containing a second phosphor, polyvinyl alcohol having a polymerization degree of 1,500 to 2,000 and distilled water on the surface of the first phosphor layer, drying, exposing and developing the second phosphor layer; wetting the surface of the first and second phosphor layers with distilled water; and forming a third phosphor layer through coating a phosphor slurry containing a third phosphor, polyvinyl alcohol having a polymerization degree of 500 to 600 and distilled water on the surface of the first and second phosphor layers, drying, exposing and developing the third phosphor layer.

REFERENCES:
patent: 2837429 (1958-06-01), Whiting
patent: 4612268 (1986-09-01), Miura et al.

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