Compound liquid crystal indicator screen

Details Compound liquid crystal indicator screen Compound liquid crystal indicator screen

1975-01-29

1976-11-16

Corbin, John K.

G02F 128

Patent

active

039920828

ABSTRACT:
A compound liquid crystal indicator screen having at least two liquid crystal cells which are arranged in tandem directly behind one another in a direction of a light beam characterized by a pair of glass outer plate members with at least one very thin transparent carrier foil member, a plurality of strip elements spacing the members to form a stack of spaced members and a glass solder sealing the periphery or marginal edges of the members to provide a plurality of spaced chambers with adjacent chambers being separated by the foil member and each chamber containing a liquid crystal layer to form one of the liquid crystal cells. Each of the foil members has a transparent electrode pattern disposed on each opposite surface which patterns are aligned with each other and each pattern has at least one lead extending to a margin of the foil and each of the plate members has a conductive layer on a surface facing the foil member with a lead extending to a margin of the plate member so that an electrical field could be selectively imposed on the liquid crystal layer of each cell to operate each cell independently of the other cells and simultaneously therewith. The strip elements are preferably of a U-shape having legs and are received with their legs engaging opposite surfaces of each of the plate members with selected strip elements contacting leads of the electrode patterns of the foil member to enable applying the electrical current to the cells.

REFERENCES:
patent: 3612654 (1971-10-01), Klein et al.
patent: 3661444 (1972-05-01), Matthies
patent: 3675988 (1972-07-01), Soref
patent: 3873186 (1975-03-01), Ritchie
patent: 3881808 (1975-05-01), Gurtler

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