LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT

PROBLEM TO BE SOLVED: To provide a liquid crystal composition satisfying at least one characteristic or having appropriate balance between at least two of the characteristics, such as a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, low viscosity,...

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Bibliographische Detailangaben
Hauptverfasser:	SAITO MASAYUKI, HATTORI NORIKAZU
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:	PROBLEM TO BE SOLVED: To provide a liquid crystal composition satisfying at least one characteristic or having appropriate balance between at least two of the characteristics, such as a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, low viscosity, an appropriate optical anisotropy, a negative large dielectric constant anisotropy, large specific resistivity, high stability to ultraviolet rays, high stability to heat; and furthermore, to provide an AM element having characteristics, such as a short response time, a high voltage holding ratio, a high contrast ratio and a long life. SOLUTION: The liquid crystal composition contains a compound having tetrahydropyran-2,5-diyl with large negative dielectric constant anisotropy as a first component, 4-propyl-4'-vinylbi(cyclohexane) as a second component, a particular compound having a high upper limit temperature as a third component, and a particular compound having a negative large dielectric constant anisotropy as a forth component, and has negative dielectric anisotropy; and the liquid crystal display element contains this composition. COPYRIGHT: (C)2010,JPO&INPIT