Disclosed in the present invention are the optically active aromatic compounds having a trifluoromethyl group useful as a component of ferroelectric liquid crystal compositions, a process for preparing the above compounds, liquid crystal compositions having the above compounds as an active ingredient, and liquid crystal elements using the above compositions. The optically active aromatic compounds of the present invention represented by the formula:
have the very excellent properties as a liquid crystal material and are useful for the preparation of liquid crystal compositions and the liquid crystal elements using such compositions.
本发明公开了可用作
铁电液晶组合物成分的具有三
氟甲基的光学活性芳香族化合物、制备上述化合物的工艺、以上述化合物为活性成分的液晶组合物以及使用上述组合物的液晶元件。本发明的光学活性芳香族化合物由式表示:
具有非常优异的液晶材料特性,可用于制备液晶组合物和使用此类组合物的液晶元件。