Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1985-10-09

1987-10-27

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

340784, G02F 1133

Patent

active

047025603

ABSTRACT:
A liquid crystal display device comprising a liquid crystal module including liquid crystal display panel having a plurality of liquid crystal picture elements arranged in a matrix form, and driving circuits for applying driving signals to signal electrodes and to scanning electrodes of the liquid crystal display panel, respectively; a control circuit for controlling the operation of the liquid crystal module; a first circuit for dividing frequency of a timing signal given by the control circuit and producing a first signal of lower frequency; and a second circuit for inverting the first signal of lower frequency once per frame period and generating a second signal to reverse the polarity of voltages applied to liquid crystal display elements with its period .tau..sub.M" satisfying the inequality

REFERENCES:
patent: 4206459 (1980-06-01), Houryu et al.
patent: 4317115 (1982-02-01), Kawakami et al.
patent: 4413256 (1983-11-01), Yasuda et al.
patent: 4427978 (1984-01-01), Williams
patent: 4560982 (1985-12-01), Sonehara et al.
patent: 4571584 (1986-02-01), Suzuki
patent: 4600274 (1986-07-01), Morozumi
patent: 4602850 (1986-07-01), DeBenedetti

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