CHOLESTERIC LIQUID CRYSTAL COMPOSITION AND CHOLESTERIC LIQUID CRYSTAL COLOR FILTER

PROBLEM TO BE SOLVED: To provide a cholesteric liquid crystal composition which can be patterned and fixed by irradiation with light and can form the selective reflecting images that are highly sharp without color drifting, and to provide a cholesteric liquid crystal color filter which has the presc...

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Bibliographische Detailangaben
Hauptverfasser:	SUGIYAMA TAKEKATSU, ICHIHASHI MITSUYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY 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 MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a cholesteric liquid crystal composition which can be patterned and fixed by irradiation with light and can form the selective reflecting images that are highly sharp without color drifting, and to provide a cholesteric liquid crystal color filter which has the prescribed selective reflection color of high sharpness and heat resistance. SOLUTION: The objective cholesteric liquid crystal composition comprises at least one of liquid crystal and polymerized monomer, photo-reactive chiral compound, polymerization initiator, and pigment respectively, where the wavelength of the absorption peak of this pigment is characteristically between the wavelength of the photosensitive peak of the photo-reactive chiral compound and the wavelength of the photosensitive peak of the polymerization initiator. In a preferred embodiment, the wavelength of the absorption peak of the pigment is in the range of 300-400. The objective cholesteric liquid crystal composition is characteristically produced by exposing the liquid crystal composition to the first beam in an image followed by polymerization and curing with the second beam.