New bistable cholesteric liquid-crystal display

Journal Article · Tue Jul 01 00:00:00 EDT 1980 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.91680· OSTI ID:5381638

Berreman, D W; Heffner, W R

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), Vol. 37:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DISPLAY DEVICES
STABILITY
LIQUID CRYSTALS
ELECTRIC FIELDS
ELECTRIC POTENTIAL
EXPERIMENTAL DATA
ORGANIC COMPOUNDS
PULSE TECHNIQUES
SURFACES
SWITCHING CIRCUITS
CRYSTALS
DATA
ELECTRONIC CIRCUITS
FLUIDS
INFORMATION
LIQUIDS
NUMERICAL DATA
360000* - Materials