Plasma display apparatus

Details Plasma display apparatus Plasma display apparatus

1987-07-22

1989-08-22

Boudreau, Leo H.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151692, 3151693, 3151694, 340771, 340805, G09G 310

Patent

active

048599107

ABSTRACT:
The invention provides voltage potential differences for selectively discharging cells in a plasma display device, with greater brightness and reduced power consumption. The plasma display device has orthogonally related electrodes sealed in an atmosphere of neon gas. When a predetermined potential is applied between two intersecting electrodes, the neon gas glows at the intersection. The predetermined potential is achieved by applying two pulse trains which have opposite phases and therefore oppositely going voltage polarities. The difference in the oppositely going peak voltages of the two pulse trains provides a firing potential at the selected intersection. To reduce power consumption, the cell at the intersection is fired at a high potential during an address mode and thereafter held in a glowing state by a greatly reduced voltage. Another embodiment produces a similar result by changing the frequency of driving pulses in the firing and the holding modes.

REFERENCES:
patent: 3869644 (1975-03-01), Yano et al.
patent: 4496879 (1985-01-01), Suste
patent: 4595919 (1986-06-01), Holz et al.

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