Dual layer phosphor screen for cathode ray tube

Details Dual layer phosphor screen for cathode ray tube Dual layer phosphor screen for cathode ray tube

1978-03-17

1980-05-20

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Screen

204181R, 427 69, H01J 2918, H01J 2930

Patent

active

042041368

ABSTRACT:
A cathode ray tube is described having a high brightness, high resolution cathodoluminescence screen which exhibits a low noise level. Two discrete phosphor layers are provided on the interior of the tube faceplate. A thin electrophoretically deposited first phosphor layer of very finely divided phosphor is disposed upon the interior surface of the tube faceplate. A second gravity settle phosphor layer is disposed over the first phosphor layer.

REFERENCES:
patent: 2590018 (1952-03-01), Koller et al.
patent: 2958002 (1960-10-01), Cusano et al.
patent: 3231775 (1966-01-01), Pritchard
patent: 3525679 (1970-08-01), Wilcox et al.
patent: 3819409 (1974-06-01), Phillips
patent: 3904502 (1975-09-01), Phillips
patent: 4025662 (1977-05-01), Sumner

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