Ferroelectric liquid crystal light shutter device and method of

Details Ferroelectric liquid crystal light shutter device and method of Ferroelectric liquid crystal light shutter device and method of

1987-05-26

1989-08-22

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

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

350333, 350350S, 340767, 340793, G02F 113, G09G 300, G09G 320

Patent

active

048590355

ABSTRACT:
An improved ferroelectric liquid crystal light shutter device formed of an array of light shutter elements, each including a ferroelectric liquid crystal exhibiting a chiral smectic phase. The light shutter elements are divided into a plurality of groups for multiplexing in accordance with a predetermined duty ratio. The formerly memorized states of the light shutter elements belonging to one of the groups and the light shutter elements to be addressed in the next scanning sequence are erased. Thereafter, the erased light shutter elements are turned into a memorized "ON-state" or "OFF-state" in accordance with image data signals. The formerly memorized states of the light shutter elements other than those which are erased or memorized are maintained by the application of predetermined voltage levels.

REFERENCES:
patent: 4608558 (1986-08-01), Amstutz et al.
Kohji Iwasa, "A Ferroelectric Liquid Crystal Display", the subject No. 17, A New Liquid Crystal Display and Some Problems Thereof, in 1985 Electric-Information Correlated Institute Combined Assembly.
Yuzuru Sato, "The 31st Research Meeting Paper" of A Group (Liquid Crystal Group) in No. 142-Committee of Organic Materials for Information Science.

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