Electro-optical display device

Details Electro-optical display device Electro-optical display device

1978-09-21

1981-09-22

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

340642, 340756, 340765, G08B 536

Patent

active

042913047

ABSTRACT:
An electro-optical display device for representation of an item of information such as digits, the display device including a front and rear plate spaced apart to form a cavity for receiving a switchable medium, the front plate on a surface facing the medium being provided with at least one segmented electrode having segments and the rear plate on a surface facing the front plate and the medium being provided with a rear electrode assembly for each segmented electrode, the segments of the segmented electrode and the rear electrode assembly being energized to switch the optical properties in the medium characterized by front control electrodes being disposed on the front plate and electrically connected with selected one of the segments of each segmented electrode and a back control electrode disposed on the rear plate overlying the front control electrode so that an indication is made by one of the front control electrodes and the back control electrodes when the associated segment should be energized.

REFERENCES:
patent: 2307173 (1943-01-01), Vian
patent: 3781863 (1973-12-01), Fujita
patent: 3938140 (1976-02-01), Garcia et al.
patent: 3943500 (1976-03-01), Buchanan
patent: 4037927 (1977-07-01), Krueger
patent: 4054368 (1977-10-01), Krueger et al.
patent: 4104620 (1978-08-01), Cronin
Paul Smith; "Multiplexing Liquid-Crystal Displays"; Electronics; May 25, 1978, pp. 113-121.
Ian Holt; "LCD Environmental and Multiplex Problems Now Solved"; Electron; Sep. 15, 1977; pp. 48, 51, 53.
H. E. Bergt & K. H. Walter, "Optoelektronische Anzeigeeinheiten," Elektronik, vol. 4, 1976, pp. 36-42.
"Nachrichtentechnische Zeitung," Ntz-Kurier, 28, 1975, pp. K62-K63.

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