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    • 38. 发明授权
    • Chlorofluorobenzene liquid crystal compound, liquid crystal composition, and liquid crystal display device
    • 氯氟苯液晶化合物,液晶组合物和液晶显示装置
    • US07569258B2
    • 2009-08-04
    • US11368305
    • 2006-03-03
    • Yasuyuki GotoTeru ShimadaTeruyo Sugiura
    • Yasuyuki GotoTeru ShimadaTeruyo Sugiura
    • C09K19/30C09K19/12C07C25/13
    • C07C25/13C07C43/225C09K19/12C09K19/14C09K19/20C09K19/3003C09K19/3028C09K19/3066C09K2019/0407C09K2019/0411C09K2019/123C09K2019/301C09K2019/3016Y10T428/10
    • Such a liquid crystal compound is provided that has stability to heat, light and so forth, has a nematic phase in a wide temperature range, has a small viscosity, a suitable optical anisotropy, and suitable elastic constants K33 and K11 (K33: bend elastic constant, K11: splay elastic constant), and has suitable negative dielectric anisotropy and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the liquid crystal compound, and a liquid crystal display device containing the liquid crystal composition are also provided.The liquid crystal compound is represented by one of formulas (a) to (d), the liquid crystal composition contains the liquid crystal compound, and the liquid crystal display device contains the liquid crystal composition: wherein Ra and Rb are independently linear alkyl or linear alkoxy, rings A1, A2, B and C are independently trans-1,4-cyclohexylene or 1,4-phenylene, Z11, Z12, Z2 and Z3 are independently a single bond or alkylene, and one of X1 and X2 is fluorine, and the other thereof is chlorine.
    • 这种液晶化合物具有对热,光等具有稳定性,在宽温度范围内具有向列相,具有小的粘度,适当的光学各向异性和适当的弹性常数K33和K11(K33:弯曲弹性 常数,K11:弹性弹性常数),具有合适的负介电各向异性,与其他液晶化合物的相容性好。 还提供了含有液晶化合物的液晶组合物和含有液晶组合物的液晶显示装置。 液晶化合物由式(a)〜(d)中的一种表示,液晶组成物含有液晶化合物,液晶显示装置含有液晶组成物:其中,Ra和Rb独立地为直链烷基或直链 烷氧基,环A1,A2,B和C独立地为反式-1,4-亚环己基或1,4-亚苯基,Z11,Z12,Z2和Z3独立地为单键或亚烷基,X1和X2之一为氟, 另一个是氯。