Color display tube having an external magnetic shield

Details Color display tube having an external magnetic shield Color display tube having an external magnetic shield

1994-10-28

1997-07-01

Patel, Nimeshkumar

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313313, H01J 2986

Patent

active

056441916

ABSTRACT:
Color display tube having a display screen with a pattern of phosphor elements. To reduce mislanding errors of the electron beams, particularly in the y-direction, the color display tube is arranged within an external magnetic shield which is constituted by an open arrangement (frame) of bars of a soft-magnetic material. The bars jointly constitute, for example the ribs of a block.

REFERENCES:
patent: 4710669 (1987-12-01), Adamski et al.
patent: 4845402 (1989-07-01), Smith
patent: 4853790 (1989-08-01), Dickie
patent: 5194776 (1993-03-01), Chevalier
A. Haga et al, "A new type of magnetic shield (abstract)", J. Appl. Phys. 64 (10), Nov. 15, 1988, p. 5706.

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