Addressing liquid crystal cells using bipolar data strobe pulses

Details Addressing liquid crystal cells using bipolar data strobe pulses Addressing liquid crystal cells using bipolar data strobe pulses

1986-04-02

1988-03-01

Birmiel, Howard A.

Communications: electrical

Continuously variable indicating

With meter reading

340784, G09G 336, G06F 314

Patent

active

047289473

ABSTRACT:
A method of addressing a matrix addressed ferroelectric liquid crystal cell is described that uses parallel entry of balanced bipolar data pulses on one set of electrodes to co-operate with serial entry of unipolar strobe pulses on the other set of electrodes. Data entry is preceded with blanking (erasing) pulses applied to the strobe lines. The polarity of the strobing and blanking pulses is periodically reversed to maintain charge balance in the long term.

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