FOUR- OR FIVE-RING LIQUID CRYSTAL COMPOUND HAVING LATERAL FLUORINE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Kobayashi Masahide
公开号:US20100309402A1
公开(公告)日:2010-12-09
The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, and a suitable elastic constant K
33
, and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition having stability to heat, light and so forth, a low viscosity, a large optical anisotropy, a suitable and negative dielectric anisotropy, and a suitable elastic constant K
33
, a low threshold voltage, a high maximum temperature (phase-transition temperature on a nematic phase-isotropic phase) of a nematic phase, and a low minimum temperature of the nematic phase. The liquid crystal compound which has a specific structure having fluorine at a lateral position and also having phenylene in which hydrogen on the benzene ring is replaced by fluorine, and a liquid crystal composition containing the compound are prepared.
本发明提供了一种液晶化合物,具有耐热、耐光等稳定性,广泛的向列相温度范围,低粘度,适当的光学各向异性和适当的弹性常数K33,进一步具有适当且负的介电各向异性和与其他液晶化合物优异的相容性,以及一种液晶组合物,具有耐热、耐光等稳定性,低粘度,大的光学各向异性,适当且负的介电各向异性,适当的弹性常数K33,低阈值电压,向列相的高最大温度(向列相-等向相相变温度)和低向列相的最低温度。制备了一种具有侧位氟和苯环上氢被氟取代的苯基的特定结构的液晶化合物以及含有该化合物的液晶组合物。