Indicia display device

Details Indicia display device Indicia display device

1977-09-12

1979-06-05

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

313518, 313519, 340779, H01J 1748

Patent

active

041575431

ABSTRACT:
The indicia display device of the present invention comprises a sealed compartment having a dielectric substrate therein. A plurality of first conductor runs are imposed on the substrate which is subsequently coated with a first layer of dielectric material having a plurality of apertures therethrough. The apertures provide vias for a plurality of second conductors to electrically connect the first conductors to a pre-determined pattern of indicia cathode segments superimposed on the first layer of dielectric material. The apertures are remotely positioned from the cathode segments and may be located either within or without the pattern of cathode segments. A second layer of delectric material is imposed on the first layer covering the apertures and second conductors with the edges of this layer abutting the edges of the cathode segments. A thin transparent anode is located on the inner surface of the window of the sealed compartment. An ionizable gas is within the compartment and produces a cathode glow adjacent cathode segments whenever an electrical potential of predetermined magnitude is imposed between the cathodes and anodes.

REFERENCES:
patent: 3728571 (1973-04-01), Uemura et al.
patent: 3786487 (1974-01-01), Yanagisawa
patent: 3824582 (1974-07-01), Glaser et al.
patent: 3912964 (1975-10-01), Kouyama et al.

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