Plasma display apparatus

Details Plasma display apparatus Plasma display apparatus

1991-02-27

1993-07-27

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

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

340805, 3151694, G09G 322

Patent

active

052313824

ABSTRACT:
The invention provides voltage potential differences for selectively discharging cells in a plasma display device, with greater brightness and reduced power consumption. The driving pulses applied to either selected cells or non-selected cells during one scanning cycle includes a high frequency hold mode period after a low frequency address mode period. During the hold mode period, a duty factor of its pulse train is selected to be smaller than that of the address mode period. Particularly, the pulse width of the pulse train in the hold mode period is shorter than an interval of pulses thereof. In other words, the duty factor of the hold mode period is selected to be less than 1/2 to decrease the voltage causing an erroneous discharge. In another embodiment, to improve brightness, the duration of hold mode is, extended to cover one more scanning cycle.

REFERENCES:
patent: 4097780 (1978-06-01), Ngo
patent: 4461978 (1984-07-01), Mikoshiba et al.
patent: 4859910 (1989-08-01), Iwakawa et al.
patent: 5003228 (1991-03-01), Hada et al.

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