Multimode liquid crystal display

Details Multimode liquid crystal display Multimode liquid crystal display

1978-08-30

1980-07-08

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340805, G06F 314, G09F 932

Patent

active

042120110

ABSTRACT:
A liquid crystal display includes a pair of electrodes separated by the liquid crystal layer, with at least one of the electrodes fashioned of a background portion and N segmented portions. Each segment is selectively energizable with a first waveform, having the same frequency, but a different phase, relative to the waveform energizing the background areas of the same electrode. The remaining electrode is selectively driven by one of a multiplicity of phase-shifted waveforms of the same frequency, to facilitate the display of characters, symbols and other indicia in one of 2.sup.N+1 display states.

REFERENCES:
patent: 3961840 (1976-06-01), Morokawa
patent: 4079369 (1978-03-01), Fukumoto

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