Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1990-12-03

1993-05-25

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340805, G09G 336

Patent

active

052144178

ABSTRACT:
A liquid crystal display device wherein scanning voltages are applied to a plurality of scanning electrodes and signal waveforms are applied to a plurality of signal electrodes. The polarity of the voltages applied to the signal and scanning electrodes is inverted during predetermined periods. As the effective voltage of the display element is changed, correcting voltages are applied to the signal electrodes in order to reduce the contrast problem associated with changes in the effective voltage of adjacent display elements.

REFERENCES:
patent: 3995942 (1976-12-01), Kawakami et al.
patent: 4485380 (1984-11-01), Soneda et al.
patent: 4845482 (1989-07-01), Howard et al.
patent: 4864290 (1989-09-01), Waters
patent: 5010326 (1991-04-01), Yamazaki et al.

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