Fluorescent display device

Details Fluorescent display device Fluorescent display device

1978-09-28

1981-05-26

Segal, Robert

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

H01J 172, H01J 6166

Patent

active

042700680

ABSTRACT:
A fluorescent display device having at least a filamentary cathode for emitting electrons, pattern display sections each coated with fluorescent material, a plurality of control electrodes electrically independent of one another provided opposite to the pattern display sections respectively, the anodes and control electrodes being selectively given drive signals thereby to make the electrons emitted from the filamentary cathode impinge on the anodes so as to display characters, numerals, graphic forms and the like on the pattern display sections, and a plurality of auxiliary electrodes provided at or above and in the vicinity of gaps between the control electrodes respectively and at all times kept at a positive potential with respect to the filamentary cathode so that the mutual influence of the control electrodes may be intercepted.

REFERENCES:
patent: 2686273 (1954-08-01), Hough et al.
patent: 3868535 (1975-02-01), Kupsky
patent: 3903448 (1975-09-01), Kuchinsky et al.

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