Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1990-06-12

1993-10-26

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313355, H01J 2907

Patent

active

052569322

ABSTRACT:
A color cathode ray tube includes an electron gun, a fluorescent screen which emits light when contacted by electron beams emitted from the electron gun, and a shadow mask arranged between the electron gun and the fluorescent screen and having a plurality of through holes for the electron beams. The color cathode ray tube further includes an electron beam reflecting film formed on an electron beam irradiated surface of the shadow mask using tungsten powder, to which at least a metal, that is not more likely to be oxidized than tungsten, is added or coated.

REFERENCES:
patent: 3604970 (1971-09-01), Culbertson et al.
patent: 4442376 (1984-04-01), Van Der Waal et al.
patent: 4692659 (1987-09-01), Takenaka et al.
patent: 4734615 (1988-03-01), Koike et al.
patent: 4810927 (1989-03-01), Watanabe
patent: 4884004 (1989-11-01), Deal et al.
"Reduction of Doming Effect in CRT Shadow Mask by the Electron Reflective Coatings" by Koitabashi et al, Feb. 9, 1989.
German article entitled, "Werkstoffkunde fur die Elektrotechnik und Elektronik" by Dr. phil. Lothar Hahn; Chem.-Ing. Irene Munke u.a.; Veb Verlag Technik Berlin; 4., unveranderte Auflage; p. 465; 1986.

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