Ferroelectric liquid crystal apparatus with temperature dependen

Details Ferroelectric liquid crystal apparatus with temperature dependen Ferroelectric liquid crystal apparatus with temperature dependen

1990-04-17

1991-08-20

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

350331T, 350333, 350350S, G09G 336

Patent

active

050418211

ABSTRACT:
A liquid crystal apparatus, comprises: a liquid crystal device comprising scanning electrodes, data electrodes and a ferroelectric liquid crystal disposed between the scanning electrodes and the data electrodes; means for applying a scanning selection signal and a scanning nonselection signal to the scanning electrodes; means for applying data signals to the data electodes in phase with the scanning selection signal; and means for varying the average voltage values of the data signals during the period of applying a scanning selection signal.

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