Ferroelectric liquid crystal data storage card

Details Ferroelectric liquid crystal data storage card Ferroelectric liquid crystal data storage card

1988-05-09

1990-09-04

Moffit, James W.

Static information storage and retrieval

Radiant energy

Liquid crystal

365117, 235380, 235492, G11C 1304

Patent

active

049549855

ABSTRACT:
A card with a display function and a data storage capability comprises a pair of substrates; a plurality of electrodes on the substrates; a liquid crystal orientation control film on the electrodes; and a liquid crystal material with a strong dielectric property filled between the pair of substrates; wherein the liquid crystal material with the strong dielectric property is utilized to provide for a liquid crystal display region and a data storage region to write in, erase, and rewrite external data by addition of external energy to the liquid crystal material.

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patent: 4158201 (1979-06-01), Smith et al.
patent: 4575621 (1986-03-01), Dreifus
patent: 4614861 (1986-09-01), Pavlov et al.
patent: 4752820 (1988-06-01), Kuroiwa et al.
patent: 4758718 (1988-07-01), Fujisaki et al.
patent: 4812634 (1989-03-01), Ohta

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