Ferroelectric liquid crystal data storage card

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United States of America Patent

PATENT NO 4954985
SERIAL NO

07192016

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Abstract

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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 Owner(s)

Patent OwnerAddress
SEMICONDUCTOR ENERGY LABORATORY CO LTDKANAGAWA KANAGAWA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yamazaki, Shunpei Tokyo, JP 7534 239327

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