Patent · US Active

Liquid crystal dopants

US7678292B2 · kind B2 · utility

1Cited by

6References

19Claims

0Family size

Assignee

Polydisplay ASA · NO

Inventors

Kjetil A. Netland · Flekkefjord, NO
Maxim V. Mitrokhine · Saratov, RU
Lorenzo Williams · Oslo, NO
Kjetil H. Holm · Oslo, NO
Fiona J. Farrand · Oslo, NO

Key dates

Filing date	Sep 2, 2003
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Nov 4, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2323/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An ionic dopant comprising a sulfur or a phosphorus containing anion with a randon cation, for use in a smectic A liquid crystal composition. The cation preferably comprises a quaternary ammonium cation.

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