The present invention provides liquid crystalline compounds having a high voltage holding ratio and a low threshold voltage, {HEAD ~ little variation} of these properties depending on {TAIL ~ temperature change}, high Δn, and good compatibility with other liquid crystal materials particularly under a low temperature; liquid crystal compositions containing these crystalline compounds; and liquid crystal display devices comprising these liquid crystal compositions 
The present invention provides liquid crystalline compounds having a high voltage holding ratio and a low threshold voltage , { HEAD ~ little variation } of these properties depending on { TAIL ~ temperature change } , high Δn , and good compatibility with other liquid crystal materials particularly under a low temperature ; liquid crystal compositions containing these crystalline compounds ; and liquid crystal display devices comprising these liquid crystal compositions
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