Proximity focused element scale image display device

Details Proximity focused element scale image display device Proximity focused element scale image display device

1977-05-16

1979-05-08

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

H01J 2956, H01J 2980, H01J 3120

Patent

active

041538560

ABSTRACT:
An envelope of a display device includes a rear wall and a front wall having a cathodoluminescent screen thereon. Within the envelope are a plurality of electron beam guides and means for extracting electron beams out of the guide at various points. The electron beam guide comprises a first guide grid parallel to and spaced from the rear wall and a guide grid structure between the first grid and the front wall. Although there are unequal electric fields on the front and rear sides of the beam guide, the first guide grid and the guide grid structure maintain symmetry of the electric fields within the guide.

REFERENCES:
patent: 671358 (1976-03-01), Siekanowicz et al.
patent: 3935500 (1976-01-01), Oess et al.
patent: 4028582 (1977-06-01), Anderson et al.
patent: 4088920 (1978-05-01), Siekanowicz et al.

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