Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1988-10-26
1991-01-15
Brier, Jeffery A.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340771, 3151694, G09G 328
Patent
active
RE0335207
ABSTRACT:
The dot matrix plasma display of the present invention comprises a plurality of parallel cathode strips mounted on the upper surface of a dielectric substrate. A glass plate is sealingly engaged over the upper surface of the substrate in spaced relation thereto so as to form an envelope therebetween. The undersurface of the glass plate includes a plurality of anode strips which extend in a direction parallel to one another and perpendicular to the cathode strips located on the substrate below. A dielectric film is printed over the cathode strips and includes a plurality of apertures therein which correspond to the junctures between the anode strips and the cathode strips, these junctures forming a dot matrix. Ionizable gas is contained within the envelope and is adapted to glow adjacent the junctures of any simultaneously actuated anode and cathode strips.
The method for driving the dot matrix plasma display includes actuating the cathode strips one at a time sequentially. Simultaneously with the actuation of each cathode strip, a pre-selected combination of anodes are also actuated so as to cause the gas to glow adjacent the junctures between the actuated anodes and cathode strips. The cathode strips are scanned at a frequency which to the human eye gives the appearance that they are constantly actuated.
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Hall Steven R.
Hesse Joseph F.
Person Herman R.
Brier Jeffery A.
Dale Electronics, Inc.
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