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New bistable cholesteric liquid-crystal display

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.91680· OSTI ID:5381638

We have made a new type of cholesteric liquid-crystal display device that is bistable in the absence of an applied field. One of the two stable states has 360/sup 0/ of twist between the two surfaces. The other is an untwisted state, like an unstrained nematic with all directors parallel. One method of switching is to apply a pulse of about 3 V or more between the cell surfaces, to obtain the twisted state or a pulse of about 1.5--2 V to obtain the untwisted state. Lesser pulses have no lasting effect. These switching characteristics have promise for displays with large numbers of characters.

Research Organization:
Bell Laboratories, Murray Hill, New Jersey 07974
OSTI ID:
5381638
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 37:1; ISSN APPLA
Country of Publication:
United States
Language:
English

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