Electrically conductive coating in cathode ray tube

Details Electrically conductive coating in cathode ray tube Electrically conductive coating in cathode ray tube

1976-05-24

1977-10-04

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313479, 106 84, H01J 2900, H01J 3100

Patent

active

040526410

ABSTRACT:
An improved conductive coating for the inner wall of a cathode ray tube is disclosed. The coating consists essentially of 5-25% of at least one of the alkali metal oxides Na.sub.2 O, K.sub.2 O and Li.sub.2 O, 20-80% SiO.sub.2, 2-25% of at least one oxide selected from the group consisting of Ag.sub.2 O, CuO, CdO, CaO, SrO, BaO, CoO, PbO, MgO, HgO, NiO, ZnO, and MnO, 10-50% carbon, and 0-50% of a filler pigment, the total content of silica plus pigment being 45-85%.

REFERENCES:
patent: 2151992 (1939-03-01), Schwartz
patent: 2162391 (1939-06-01), Schwartz et al.
patent: 2223924 (1940-12-01), Stephan
patent: 2699510 (1955-01-01), Smelt
patent: 3108906 (1963-10-01), Scharrer et al.
patent: 3295008 (1966-12-01), Gallaro et al.
patent: 3715224 (1973-02-01), Campbell

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