Electronic displays

Details Electronic displays Electronic displays

1983-10-12

1985-07-09

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

340784, G02F 1133, G09F 900

Patent

active

045278636

ABSTRACT:
A polar co-ordinate display of full 360.degree. arc comprised of electrode bearing substrates each side of a layer of dyed phase change liquid crystal material. One set of electrodes comprises concentric spirals, the other set comprises radials. The display is multiplex addressed using four select waveform signals. These four signals V.sub.1, V.sub.2, V.sub.3, and V.sub.x satisfy the following conditions:

REFERENCES:
patent: 3588225 (1971-06-01), Nicastro
patent: 3800524 (1974-04-01), Matsumura et al.
patent: 3955208 (1976-05-01), Wick
patent: 4313663 (1982-02-01), Stemme
patent: 4326279 (1982-04-01), Shanks
patent: 4422729 (1983-12-01), Suzuki

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