Single substrate ac plasma display

Details Single substrate ac plasma display Single substrate ac plasma display

1977-01-17

1978-08-08

Trafton, David L.

Communications: electrical

Audible indication

Percussion-type sound producer

313518, 340336, H01J 1748

Patent

active

041060091

ABSTRACT:
It has been discovered that the electric field created at an ON site of a planar ac plasma display device in response to the combined sustain and wall voltages propagates along the cathodic electrode during each half cycle of the sustain signal. This means that the electrodes can be made to extend much farther away from the interelectrode gap than was heretofore believed, providing glow paths which extend farther away from the interelectrode gap than have been heretofore provided. Illustrative display devices taking advantage of this discovery include a seven-segment display in which each segment comprises a central electrode and two outer electrodes, and fixed-format displays in which each electrode is formed in the shape of an alphabetic character.

REFERENCES:
patent: 3703657 (1972-11-01), Shesser
patent: 3760403 (1973-09-01), Kippenhan
patent: 3811061 (1974-05-01), Nakayama et al.
patent: 3935494 (1976-01-01), Dick et al.
patent: 3993921 (1976-11-01), Robinson
patent: 4019086 (1977-04-01), Person et al.
George W. Dick and Martin R. Biazzo; "A Planar Single-Substrate AC Plasma Display;" IEEE Transactions on Elec. Dev.; Apr. 1976, pp. 429-437.

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