Liquid crystal display device with interdigital electrodes

Details Liquid crystal display device with interdigital electrodes Liquid crystal display device with interdigital electrodes

1974-10-31

1976-08-17

Gensler, Paul L.

Communications: electrical

Land vehicle alarms or indicators

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

340166EL, 340324M, G02F 113

Patent

active

039750850

ABSTRACT:
AC drive voltages out of phase with each other are applied to a pair of interdigital electrodes disposed opposite to each other and adjacent to a liquid crystal material. By the AC drive voltages displaced in phase from each other rotating electric fields are generated to cause liquid crystal molecules to be violently rotated or perturbed. As a result, a contrast as well as rise and fall characteristics can be improved.

REFERENCES:
patent: 3774989 (1973-11-01), Takahashi
Heidrich et al., Switching of Nematic Liquid Crystals by Surface Waves, IBM Tech. Discl., vol. 15, No. 1, June 1972, pp. 165-167.

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