The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1995
Filed:
Aug. 14, 1992
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The invention relates to an electro-optically switchable columnar liquid-crystalline system wherein the columns have ferroelectric transverse polarization. The molecules in the columns of electro-optically switchable ferroelectric phases are tilted to or otherwise aligned with the longitudinal axis of the columns in such a manner than the columns are ferroelectrically polarized. The ferroelectric polarization is in a direction transverse to the column axis or has at least one transverse component. The polarization direction need not be the same for all columns of a columnar phase. The transverse polarization of the columns is fully or partially realigned by application of an electrical field to the liquid crystal. The liquid-crystalline system according to the invention can be used to produce electro-optical switching and display devices.