Picture display device

Details Picture display device Picture display device

1979-04-24

1980-10-07

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural ray-type tube

313422, 315366, H01J 2950, H01J 2970

Patent

active

042271177

ABSTRACT:
A picture display device comprising an electron source for producing band-shaped electron beams, electron beam control means for controlling the selective passage of the electron beams, deflection means for horizontally and vertically deflecting the electron beams and display means for emitting light in response to impingement of the electron beams thereon. The electron source comprises a plurality of linear thermionic cathodes, a focusing electrode for focusing the electron beams emitted from each linear thermionic cathode to band-shaped electron beams and an electron beam emitting electrode having a plurality of apertures therethrough, and a negative pulse voltage is sequentially applied to the linear thermionic cathodes to emit the required electron beams for one scanning line.

REFERENCES:
patent: 2965801 (1960-12-01), Archer et al.
patent: 3935500 (1976-01-01), Oess
patent: 4029984 (1977-06-01), Endriz

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