Shadow mask assembly for a cathode ray tube

Details Shadow mask assembly for a cathode ray tube Shadow mask assembly for a cathode ray tube

1979-04-19

1981-09-29

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907

Patent

active

042925657

ABSTRACT:
A cathode ray tube in which a shadow mask assembly constituted by a shadow mask and a mask frame is positioned to face a phosphor screen formed on the inner face of a panel at a predetermined distance. The shadow mask and/or the mask frame is plated with a nickel film 0.5 to 3.0 microns thick and is subsequently blackened, thereby preventing a black oxide film from peeling off the shadow mask assembly.

REFERENCES:
patent: 2728008 (1955-12-01), Burnside
patent: 2826538 (1958-03-01), Hunter et al.
patent: 3349272 (1967-10-01), Bathelt et al.
patent: 3777203 (1973-12-01), Yamada et al.
patent: 3885190 (1975-05-01), Taniguchi et al.
patent: 3935036 (1976-01-01), Kinsch

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