| 摘要 |
<p>Disclosed are: a liquid crystalline compound which is stable to heat, light and the like, exhibits a liquid crystal phase in a wide temperature range, has a small viscosity, adequate optical anisotropy, large dielectric anisotropy, and excellent compatibility with other liquid crystalline compound; a liquid crystal composition having adequate optical anisotropy and dielectric anisotropy and a low threshold voltage, and exhibits a nematic phase having a high upper-limit temperature and a low lower-limit temperature; and a liquid crystal display element having 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. For example, a halogenobenzene derivative having a trifluoropropenyl group or a trifluoropropynyl group in a side chain, such as trans-4'-[3,5-difluoro-4-(3,3,3-trifluoropropenyl)phenyl]-trans-4-propylbicyclohexyl, can be used as the liquid crystalline compound. The liquid crystal composition comprises the derivative. The liquid crystal display element utilizes the liquid crystal composition.</p> |
