The present invention provides {HEAD ~ liquid crystalline compounds} having a high voltage holding ratio and a low threshold voltage, little variation of these properties depending on temperature change, {TAIL ~ 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 { HEAD ~ liquid crystalline compounds } having a high voltage holding ratio and a low threshold voltage , little variation of these properties depending on temperature change , { TAIL ~ 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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