Nematic liquid crystal display with surface bistability and control by flexoelectric effect
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 18, 1994
Grant Date -
N/A
app pub date -
Dec 22, 1992
filing date -
Jun 22, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bistable liquid crystal optical device includes two transparent plates (12, 14) provided with control electrodes (18, 19), between which is placed a nematic liquid crystal material (20). The transparent plates (12, 14) are surface-treated so as to define two stable configurations of molecules of the liquid crystal material generating respectively two flexoelectrical polarizations having components which are normal to electrodes P.sub.z 1P.sub.z 2 having opposite directions. Devices (30) are provided for applying perpendicular electrical field pulses to the plates (12, 14), said pulses being directed selectively one way or the other.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully