ACRYLATE POLYMER-DISPERSED LIQUID CRYSTAL MATERIAL AND DEVICES MADE THEREFROM

A composite material (22) includes droplets (24) of a liquid crystal material dispersed within a matrix (26) of a photopolymerized polymer. The material (22) is prepared by forming a solution of the liquid crystal material and a monomer, and then polymerizing the monomer with light. The solubility o...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAGISHI, FREDERICK G, MILLER, LEROY J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DYES FREQUENCY-CHANGING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A composite material (22) includes droplets (24) of a liquid crystal material dispersed within a matrix (26) of a photopolymerized polymer. The material (22) is prepared by forming a solution of the liquid crystal material and a monomer, and then polymerizing the monomer with light. The solubility of the liquid crystal material in the polymer is less than in the monomer. As polymerization progresses, a portion of the liquid crystal material separates as a second phase in the polymer matrix (26). The liquid crystal can be any suitable such material that is soluble in the monomer and less so in the polymer, and the monomer is a polymerizable acrylate or methacrylate. Liquid crystal devices are prepared by forming the composite material between two electrically conducting substrates.