Patent · US Expired

Electro-optical material having a lamellar liquid crystal structure

US6181407A · kind A · utility

1Cited by

8References

6Claims

0Family size

Assignee

DEUTSCHE TELEKOM AG · DE

Inventors

Wolfgang Dultz · Frankfurt am Main, DE
Leonid A. Beresnev · Dayton, US
Ashok Bizadar · New Delhi, IN
Wolfgang Haase · Reinheim, DE

Key dates

Filing date	Jun 23, 1997
Grant date	Jan 30, 2001
Priority date	—
Expiry date	Jun 23, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2323/02
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An electro-optic material that is characterized by short reaction times when working with a low drive voltage. For that, the electro-optic material has a lamellar liquid crystal (10), which contains one or more components and into which chiral molecules (20), whose longitudinal axes (m) are longer than the longitudinal axes of the molecules (10) forming the lamellar liquid crystal, are introduced at a predefined concentration, so that the longitudinal axes (m) of the chiral molecules (20) are tilted, without an external electric field, statistically by a predefined angle (.theta..sub.m) toward the normal (z) of the layer of the lamellar liquid crystal (10).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.