Nematic liquid crystal mixtures and a matrix liquid crystal display

A nematic liquid crystal mixture having a positive dielectric anisotropy Delta∈ of at least +4 and a birefringence Deltan of at least 0.12, characterized in that the mixtures comprises one or more components having the core structurewherein L , L , Y and Z are each independently of one another H or...

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Bibliographische Detailangaben
Hauptverfasser:	RIEGER BERNHARD, REIFFENRATH VOLKER, HITTICH REINHARD
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 LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A nematic liquid crystal mixture having a positive dielectric anisotropy Delta∈ of at least +4 and a birefringence Deltan of at least 0.12, characterized in that the mixtures comprises one or more components having the core structurewherein L , L , Y and Z are each independently of one another H or F, one of Q and Q is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene and the other residue Q or Q is -CH2CH2-, -CH2CH2CH2CH2- or-if at least one of L , L , Y and Z denotes F-also a single bond, whereby this core structure can be optionally further fluorinated in the benzene rings.