| 摘要 |
PROBLEM TO BE SOLVED: To obtain an anti-ferroelectric liquid crystal composition capable of forming a liquid crystal element capable of obtaining a wide operating temperature range, rapid switching speed and stabilized contract by making the composition include a specific optically inactive compound and a specific optically active compound. SOLUTION: This liquid crystal comprises (A) preferably 1-40 mol% one or more kinds of optically inactive compounds such as a compound of formula III selected from the compound group represented by formula I [R1 and R2 are each a 3-16C (F-substituted) optically active alkyl or a 3-16C (F-substituted) optically inactive alkoxyalkyl; A is a group of formula II (Z1 is H or F) or the like; X1 and X2 are each COO, OCO, O, a single bond or the like] and (B) preferably 60-99 mol% one or more kinds of optically active compounds such as a compound of formula IV [R3 is a 3-20C alkyl or a polyfluoroalkyl; R4 is a 2-10C alkyl; A3 is a group of formula V or the like; X5 is COO, CH2O or the like; Y1 is CF3, CH3 or the like].
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