Color cathode ray tube having a shadow mask covered with a porou

Details Color cathode ray tube having a shadow mask covered with a porou Color cathode ray tube having a shadow mask covered with a porou

1989-08-31

1991-05-21

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, H01J 2907

Patent

active

050178300

ABSTRACT:
A color cathode ray tube having a vacuum envelope including a panel with an inner surface, a neck and a funnel connecting the neck to the panel, a phosphor screen provided on the inner surface of the panel for emitting visible light, an electron gun provided in the neck for emitting a plurality of electron beams towards the phosphor screen, a shadow mask provided adjacent to the phosphor screen with a predetermined distance from the phosphor screen, and a porous layer, which is formed on a surface of the shadow mask facing to the electron gun. The porous layer is formed by using metal alkoxide solution which contains black color pigment containing both of cobalt oxide and nickel oxide.

REFERENCES:
patent: 4665338 (1987-05-01), Inaba et al.
patent: 4734615 (1988-03-01), Koike et al.

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