| abstract |
Liquid crystal compound exhibiting a low driving voltage, a liquid crystal phase within a broad temperature range and a good compatibility with other known liquid crystal compounds at low temperatures is provided, which compound is expressed by the formulan n wherein R is H or a linear or branched alkyl group of 1-10C, X is H or F, and a vinyl group has a transconfiguration, and which compound has a high dielectric anisotropy value for its relatively low viscosity and can drive liquid crystal display elements under a low voltage, and further exhibits a liquid crystal phase within a broad temperature range of about room temperature to about 200°C, and exhibits a good compatibility with many other liquid crystalline compounds. |