Method for driving liquid-crystal panel

Details Method for driving liquid-crystal panel Method for driving liquid-crystal panel

1984-09-11

1987-06-23

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340811, 340812, 340805, G09G 336

Patent

active

046756671

ABSTRACT:
In a method for driving a liquid-crystal display panel of the type in which each of display picture elements arranged in a matrix array is provided with a switching transistor; a common electrode is formed on a first base plate disposed in opposed relationship with a second base plate with display picture element electrodes thereon, a liquid crystal being sandwiched between the first and second base plates; and the liquid crystal is driven by an alternating electric field of two voltage levels given by switching the potential of the common electrode between two potential levels during each display cycle, the potential of the common electrode is either linearly or non-linearly decreased during a display period at the lower voltage level of the two voltage levels and the potential of the common electrode is also either linearly or non-linearly increased during a display period at the higher voltage level.

REFERENCES:
patent: 4231035 (1980-10-01), Van Doorn et al.
patent: 4378557 (1983-03-01), Murata
patent: 4560982 (1985-12-01), Sonehara et al.

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