公开(公告)号：US5366659A

公开(公告)日：1994-11-22

申请号：US215525

申请日：1994-03-22

申请人： Wen-Liang Tsai ,  Hwei-Long Kuo ,  Shih-Yiing Sheu

发明人： Wen-Liang Tsai ,  Hwei-Long Kuo ,  Shih-Yiing Sheu

IPC分类号： C07D239/34 ,  C09K19/34 ,  C07C41/00 ,  C07D239/02 ,  C09K19/52

CPC分类号： C09K19/3463 ,  C07D239/34

摘要： A liquid crystal composition containing an optically active or a ferroelectric liquid crystal compound represented by the following formula: ##STR1## wherein A can be either --CH.sub.2 -- or --CO--; R can be either an alkyl or alkoxyl group having 1 to 22 carbons: R' is an alkyl group having 2 to 8 carbons; x and y are integers of either 0 or 1, provided that when x=0, y.noteq.1; D can be a hydrogen or a halogen atom; and * represents a chiral center. The ferroelectric liquid crystals of the present invention exhibit optical and chemical stabilities, high-speed responsive, and high spontaneous polarization, and thus are excellent materials for use in making liquid crystal devices and liquid crystal light switching elements.

摘要翻译： 含有由下式表示的光学活性物质或铁电液晶化合物的液晶组合物： -CO-; R可以是具有1至22个碳的烷基或烷氧基：R'是具有2至8个碳原子的烷基; x和y是0或1的整数，条件是当x = 0时，y等于1; D可以是氢或卤素原子; *表示手性中心。 本发明的铁电液晶具有光学和化学稳定性，高速响应性和高自发极化，因此是用于制造液晶装置和液晶光开关元件的优良材料。