Addressing liquid crystal cells

Details Addressing liquid crystal cells Addressing liquid crystal cells

1987-03-31

1990-03-20

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

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

350332, 350333, 340805, 340811, 340784, G02F 113, G09G 336, G09G 300

Patent

active

049096079

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. The polarity of the strobe pulses is periodically reversed to maintain charge balance in the long term.

REFERENCES:
patent: 4048633 (1977-09-01), Sano
patent: 4413256 (1983-11-01), Yasuda et al.
patent: 4591886 (1986-05-01), Umeda et al.
patent: 4638310 (1987-01-01), Ayliffe
Alta Frequency, vol. 51, No. 3, May/Jun. 1982, pp. 152-158, Milalo It E. Cebi et al.: "A Video Controller for a Liquid Crystal Alphanumeric Panel".

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