公开(公告)号：US5356564A

公开(公告)日：1994-10-18

申请号：US89171

申请日：1993-07-08

申请人： Wen-Liang Tsai ,  Hwei-Long Kuo ,  Shu-Hui Yang

发明人： Wen-Liang Tsai ,  Hwei-Long Kuo ,  Shu-Hui Yang

IPC分类号： C07C69/86 ,  C07C69/773 ,  C07C69/94 ,  C07C323/51 ,  C09K19/20 ,  G02F1/13 ,  C07C69/76 ,  C09K19/12

CPC分类号： C07C69/94 ,  C09K19/2021

摘要： A liquid crystal composition containing an optically active or a ferroelectric liquid crystal compound represented by the following formula: ##STR1## wherein: A is selected from the group consisting of oxygen and sulfur; B is selected from the group consisting of --(CH.sub.2).sub.m -- and --(CH.sub.2).sub.n --O--; R is an alkyl or alkoxyl group having 1 to 22 carbons; R' is an alkyl group having 2 to 8 carbons or an ether group having 2 to 8 carbons; m is an integer from 0 to 4; n is an integer from 2 to 5; k is an integer of 0 or 1; l is an integer of 0 or 1; C and D are selected form the group consisting of hydrogen atom and halogen atoms, and * represents a chiral center. The ferroelectric liquid crystals of the present invention exhibit optical and chemical stabilities, high-speed switching characteristic and high spontaneous polarization, and thus are excellent materials for use in 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：由氧和硫组成的组; B选自 - （CH 2）m - 和 - （CH 2）n -O-; R是碳原子数1〜22的烷基或烷氧基， R'是碳原子数2〜8的烷基或碳原子数2〜8的醚基， m为0〜4的整数; n是2至5的整数; k是0或1的整数; l为0或1的整数; C和D选自氢原子和卤素原子，*表示手性中心。 本发明的铁电液晶具有光学和化学稳定性，高速切换特性和高自发极化，因此是用于液晶装置和液晶光开关元件的优良材料。

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。

公开(公告)号：US5360575A

公开(公告)日：1994-11-01

申请号：US790246

申请日：1991-11-08

申请人： Wen-Liang Tsai ,  Hwei-Long Kuo

发明人： Wen-Liang Tsai ,  Hwei-Long Kuo

IPC分类号： C07C69/708 ,  C07C69/773 ,  C07C69/92 ,  C07C69/94 ,  C09K19/20 ,  C09K19/52 ,  C07C69/76 ,  G02F1/13

CPC分类号： C07C69/94 ,  C07C69/708 ,  C07C69/92 ,  C09K19/2021

摘要： An optically active lactic acid derivative having the formula (1a): ##STR1## wherein A is O or S; B is --(CH.sub.2).sub.m -- or --(CH.sub.2).sub.n --O; R1 is an alkoxy group having 1-22 carbon atoms, a phenolate, a substituted phenolate, a hydroxy group, or a halogen atom; R2 is an alkyl group having 2-8 carbon atoms; m is 0, 1, 2, 3 or 4; n is 2, 3, 4 or 5; C* is an asymmetric carbon atom. Liquid crystal compositions and liquid crystal devices containing the above mentioned derivatives are also disclosed.

摘要翻译： 具有式（1a）的光学活性乳酸衍生物：其中A是O或S; B是 - （CH 2）m - 或 - （CH 2）n -O; R1是具有1-22个碳原子的烷氧基，酚盐，取代的酚盐，羟基或卤素原子; R2是具有2-8个碳原子的烷基; m为0,1,2,3或4; n为2,3,4或5; C *是不对称碳原子。 还公开了含有上述衍生物的液晶组合物和液晶装置。