Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1978-09-11

1980-05-27

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

340765, 340811, 350332, G02F 113

Patent

active

042053110

ABSTRACT:
A liquid crystal display device having a liquid crystal display cell disposed between a first electrode and a second electrode is disclosed. A circuit for applying an exciting voltage to the first electrode is also provided. An integrator integrates the exciting voltage to produce a mean DC voltage. The mean DC voltage is applied to the second electrode. If necessary, an impedance converter is provided to convert the impedance of the output from the integrator so that it is lower than that of the liquid crystal cell.

REFERENCES:
patent: 3653745 (1972-04-01), Mao
patent: 3750140 (1973-07-01), Gray
patent: 3781864 (1973-12-01), Fujita
patent: 3781865 (1973-12-01), Yamazaki
patent: 3809458 (1974-05-01), Henner et al.
patent: 3912977 (1975-10-01), Fillmore
patent: 4011002 (1977-03-01), Ebihara et al.
patent: 4137523 (1979-01-01), Mukaiyama

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