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    • 9. 发明公开
    • LIQUID CRYSTALLINE COMPOUND, LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL DISPLAY ELEMENT
    • FLÜSSIGKRISTALLVERBINDUNG,FLÜSSIGKRISTALLZUSAMMENSETZUNG,FLÜSSIGKRISTALLANZEIGEELEMENT
    • EP2123623A1
    • 2009-11-25
    • EP08703217.3
    • 2008-01-15
    • Chisso CorporationChisso Petrochemical Corporation
    • SHIMADA, Teru
    • C07C25/24C07C43/225C07C69/773C09K19/12C09K19/14C09K19/16C09K19/18C09K19/20C09K19/30C09K19/32C09K19/34G02F1/13
    • C09K19/10C09K19/30C09K2019/0407C09K2019/0444Y10T428/10
    • The invention provides a liquid crystal compound which has stability to heat, light and so forth, shows liquid crystal phases in a wide temperature range, and has a small viscosity, an appropriate optical anisotropy, a large dielectric anisotropy, and an excellent compatibility with other liquid crystal compounds. The invention provides a liquid crystal composition which has an appropriate optical anisotropy, an appropriate dielectric anisotropy, a low threshold voltage, and a high maximum temperature and a low minimum temperature of a nematic phase. The invention provides a liquid crystal display device which has a short response time, a small power consumption, a small driving voltage, and a large contrast, and can be used in a wide temperature range.
      The liquid crystal compound is a halogeno-benzene derivative having a trifluoropropenyl group or trifluoropropynyl group at a side chain, such as, for example, trans-4'-[3,5-difluoro-4-(3,3,3-trifluoropropenyl)phenyl]-trans-4-p ropylbicyclohexyl. The liquid crystal composition contains a compound which is this derivative. The liquid crystal display device uses this liquid crystal composition.
    • 本发明提供了一种对热,光等具有稳定性的液晶化合物,在宽的温度范围内显示出液晶相,并且具有小的粘度,适当的光学各向异性,大的介电各向异性和与其它的优异的相容性 液晶化合物。 本发明提供了具有适当的光学各向异性,适当的介电各向异性,低阈值电压以及向列相的最高温度和低的最低温度的液晶组合物。 本发明提供一种液晶显示装置,其响应时间短,功耗小,驱动电压小,对比度大,可以在宽温度范围内使用。 液晶化合物是在侧链具有三氟丙烯基或三氟丙炔基的卤代苯衍生物,例如反式-4' - [3,5-二氟-4-(3,3,3-三氟丙烯基 )苯基] - 反式-4-对甲苯基双环己基。 液晶组合物含有作为该衍生物的化合物。 液晶显示装置使用该液晶组合物。