| abstract |
Liquid-crystal compounds represented by general formula (I) and a liquid-crystal composition containing any of the compounds, wherein R1 represents C1-15 alkyl; rings A1, A2, and A3 each independently represents trans-1,4-cyclohexylene, trans-1,4-silacyclohexylene, 1,4-phenylene, etc.; X1, X2, and X3 each independently represent -(CH2)4-, -(CH2)3-O-, -O(CH2)3-, or a single bond; Y1 represents hydrogen or C1-15 alkyl; and m and n each is 0 or 1. The compounds have a liquid-crystal phase in a wide temperature range, a low viscosity, and a large negative value of Δε, are easily miscible with other liquid-crystal materials, and are useful as a component of nematic liquid-crystal composition suitable for use in both the TFT and IPS display systems. |