Non-chiral smectic C liquid crystal display

Details Non-chiral smectic C liquid crystal display Non-chiral smectic C liquid crystal display

1996-10-22

1998-07-14

Dang, Hung X.

Liquid crystal cells, elements and systems

With specified nonchemical characteristic of liquid crystal...

Within smectic phase

349 99, 349103, 349136, G02F 1139, G02F 11335, G02F 11337

Patent

active

057812659

ABSTRACT:
A liquid crystal display according to this invention has a pair of transparent electrodes, a non-chiral smectic liquid crystal therebetween, a polarizer and an analyzer which are attached to the electrodes. The smectic layers are perpendicular to the electrodes and the liquid crystal has a twisted structure where the twist angle is twice the molecular tilt angle. In this configuration, the molecular director is forced to continuously rotate along the cone surface formed by the requirement that the molecules are tilted with respect to the layer normal and pinned at the surfaces. The basic principles of the optical modulation in the present invention are similar to those in twist nematic liquid crystal structures.

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