Liquid crystal display having electrically controlled birefringe

Details Liquid crystal display having electrically controlled birefringe Liquid crystal display having electrically controlled birefringe

1990-12-18

1993-01-26

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 55, 359 63, 359 77, G02F 113

Patent

active

051826640

ABSTRACT:
Disclosed is a homeotropic liquid crystal display which comprises a pair of substrates and a nematic liquid crystal layer disposed between the pair of substrate to form a cell. The substrates have tilt orientation directions parallel to each other which are capable of orientating liquid crystal molecules homeotropically or pseudo-homeotropically at an angle range of from 0.degree. to about 20.degree.. The nematic liquid crystal layer has negative dielectric anistropy and contains no or a very small amount of chiral molecules. The cell has a response time shorter than the driving frame time, and a small gap and low viscosity so that the liquid crystal layer is not twisted at an "OFF" state but is spontaneously twisted only in an "ON" state in which a pulse voltage is applied to the cell.

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