Cathode-ray tube with an internal magnetic shield

Details Cathode-ray tube with an internal magnetic shield Cathode-ray tube with an internal magnetic shield

1985-02-28

1986-11-11

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313407, 313481, H01J 2906, H01J 2994

Patent

active

046224904

ABSTRACT:
A cathode-ray tube has a rectangular faceplate panel sealed to a funnel thereof along an edge of a sidewall of the panel, and has an internal magnetic shield disposed therein proximate an inner surface of the sidewall and extending backward along an inner surface of the funnel. The magnetic shield has at least one opening disposed in at least one corner thereof for allowing dispersal of getter material therethrough and onto the inner surfaces of the sidewall and the funnel adjacent the edge.

REFERENCES:
patent: 3802757 (1974-04-01), Benda et al.
patent: 4019085 (1977-04-01), Sakata
patent: 4198587 (1980-04-01), Verhoeven et al.
patent: 4506188 (1985-03-01), Puhak

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