Display device using electro-optic plate and a membrane switch

Details Display device using electro-optic plate and a membrane switch Display device using electro-optic plate and a membrane switch

1986-12-04

1988-03-29

Arnold, Bruce Y.

Communications: electrical

Land vehicle alarms or indicators

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

340783, G02F 1055

Patent

active

047339500

ABSTRACT:
A display apparatus using a light-transmitting ceramic plate having an electrooptic effect known as Kerr effect is disclosed. The ceramic plate is placed between two parallel polarizers having a same axis of polarization. A transparent flexible sheet faces a surface of the ceramic plate. The flexible sheet has a plurality of transparent striped electrodes on a surface facing the surface of the ceramic plate. The striped electrodes are locally brought into contact with the surface of the ceramic plate by a pressure applied by a pressure application head which is either always or intermittently pressed onto the flexible sheet. The pressure application head is movable in a direction parallel to the striped electrodes for scanning.

REFERENCES:
patent: 3292171 (1966-12-01), Wilson
patent: 3495232 (1970-02-01), Wagner
patent: 4113360 (1978-09-01), Baur et al.
patent: 4158201 (1979-06-01), Smith et al.
patent: 4170772 (1979-10-01), Bly
patent: 4636786 (1987-01-01), Haertling

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