Phosphorus luminescent display tube

Details Phosphorus luminescent display tube Phosphorus luminescent display tube

1978-06-12

1980-02-26

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Coplanar electrodes

313497, H01J 6302, H01J 6306

Patent

active

041907876

ABSTRACT:
A phosphorus luminescent display tube of the triode type having, in a vacuum casing, a filamentary cathode for emitting thermions, a control electrode for accelerating and controlling the thermions emitted from the cathode, a plurality of pattern display sections each composed of a plurality of segment anodes each coated with a phosphor layer for emitting light when the thermions impinge thereon, the segment anodes being selectively given an anode potential, and auxiliary anode conductors provided in the vicinity of and substantially on the same level with the segment anodes and kept positive with respect to the filamentary cathode so as to absorb electron oscillations occurring in the vicinity of the segment anodes to which the anode potential is not given.

REFERENCES:
patent: 3508101 (1970-04-01), Tanji
patent: 3668466 (1972-06-01), Shimada
patent: 3780326 (1973-12-01), Raago
patent: 4047072 (1977-09-01), Kishino et al.

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