Method of control for an analog display device of the non-contin

Details Method of control for an analog display device of the non-contin Method of control for an analog display device of the non-contin

1977-09-16

1980-03-04

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340805, 340765, 340784, G06F 314

Patent

active

041919556

ABSTRACT:
A liquid crystal film placed between plate electrodes and point electrodes can have a first optical state 1 if the electrical excitation applied between the plate and point electrodes is higher than a threshold value V.sub.s and a second optical state 0 of this excitation is lower than the threshold value. A set of P voltages is applied to the P point connections of the device and a second set of S voltages is applied simultaneously to the S sector connections. In a boundary sector, some points of the liquid crystal are thus in state 1 while other points are in state 0. In the case of each of the other sectors, the points of any one sector are all in one of the two states 1 or 0.

REFERENCES:
patent: 3936676 (1976-02-01), Fujita
patent: 3949242 (1976-04-01), Hirasawa et al.
patent: 4048633 (1977-09-01), Sano
patent: 4054385 (1977-10-01), Wheable
patent: 4060801 (1977-11-01), Stein et al.
patent: 4060802 (1977-11-01), Matsuki

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