Picture display device

Details Picture display device Picture display device

1982-10-05

1985-04-30

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313422, H01J 2970, H01J 2972

Patent

active

RE0318760

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 et al.
patent: 4029984 (1977-06-01), Endriz
patent: 4118651 (1978-10-01), Scott
patent: 4137486 (1979-01-01), Schwarz

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