DICHROIC LIQUID CRYSTAL COMPOSITION AND METHOD FOR ENHANCING THE COLOR OF DICHROIC DYES

Abstract

Abstract Translated from French COMPOSITION AYANT A LA FOIS UN PIC D'ABSORPTION A DES LONGUEURS D'ONDE SUPERIEURES A 650NM ET UN PARAMETRE D'ORDRE SUPERIEUR A 0,60. ELLE COMPREND UN MATERIAU HOTE CONSTITUE DE CRISTAUX LIQUIDES; ET UN COLORANT INVITE ANTHRAQUINONIQUE PRESENTANT UNE STRUCTURE CYCLIQUE PENTAGONALE DICARBOXIMIDO N-SUBSTITUE RELIEE AUX DEUX ATOMES DE CARBONE LES PLUS EXTERNES D'AU MOINS UN CYCLE BENZENIQUE LATERAL DE LA MOLECULE D'ANTHRAQUINONE PAR LES GROUPES CARBONYLES DE LA STRUCTURE DICARBOXIMIDO. APPLICATION A LA FABRICATION D'AFFICHAGES A CRISTAUX LIQUIDES. COMPOSITION HAVING BOTH A HIGH ABSORPTION AT WAVELENGTHS GREATER THAN 650NM AND A PARAMETER OF ORDER GREATER THAN 0.60. IT INCLUDES A HOST MATERIAL CONSISTING OF LIQUID CRYSTALS; AND AN ANTHRAQUINONIC GUEST DYE SHOWING A PENTAGONAL DICARBOXIMIDO N-SUBSTITUTE CYCLIC STRUCTURE CONNECTED TO THE TWO OUTSTANDING CARBON ATOMS OF AT LEAST ONE LATERAL BENZENIC CYCLE OF THE ANTHRAQUINONE MOLECULE BY THE DICAROXIMIDO CARBIMONYURE GROUPS. APPLICATION TO THE MANUFACTURE OF LIQUID CRYSTAL DISPLAYS.

Inventors

• 👤 Siegfried Aftergut
• 👤 Herbert Stanley Cole Jr

Bibliographic Details