Method of operating a stacked display

Details Method of operating a stacked display Method of operating a stacked display

1983-01-14

1985-06-04

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340716, 340765, 350335, G09G 336

Patent

active

045217750

ABSTRACT:
Two levels of liquid crystal material and upper, center and lower transparent members are sandwiched to form a stacked display. Segment electrodes, which are disposed on opposite sides of the center transparent member, are controllable to selectively display information in one of the two levels while the other level is caused to remain transparent. By applying different waveforms to the levels, one level can be energized while the other is held inactive.

REFERENCES:
patent: 4231640 (1980-11-01), Funada et al.
patent: 4320484 (1982-03-01), Burdet
patent: 4335936 (1982-06-01), Nonomura et al.
patent: 4371870 (1983-02-01), Biferno
patent: 4399352 (1983-08-01), Ueda

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