Ferroelectric liquid crystal device
    4.
    发明公开
    Ferroelectric liquid crystal device 失效
    FerroelektrischeFlüssigkristallvorrichtung。

    公开(公告)号:EP0442504A2

    公开(公告)日:1991-08-21

    申请号:EP91102112.9

    申请日:1991-02-14

    摘要: A ferroelectric liquid crystal device having a pair of substrates each provided with voltage applying means, an orientation control layer formed on at least one of the substrates, and a layer of ferroelectric liquid crystal composition disposed between the pair of substrates, the ferroelectric liquid crystal composition comprising at least one compound (a) having an optically active group of the formula (I):
    , at least one compound (b) which is reverse to the compound (a) in the direction of a helical pitch induced in a nematic phase and at least one liquid crystal compound (c) exhibiting a smectic C phase, the liquid crystal composition exhibiting at least a smectic C phase, smectic A phase and nematic phase.

    摘要翻译: 一种具有一对基板的强电介质液晶器件,每个基板均设有电压施加装置,至少一个基板上形成的取向控制层(6)和设置在所述一对基板之间的铁电液晶组合物层(8) 包含至少一种具有式(I)的光学活性基团的化合物(a):的铁电液晶组合物,至少一种与化合物(a)相反的化合物(b) 在向列相中引起的螺旋间距和表现出近晶C相的至少一种液晶化合物(c),该液晶组合物至少表现出近晶C相,近晶A相和向列相。

    Ferroelectric liquid crystal compositions and use thereof
    8.
    发明公开
    Ferroelectric liquid crystal compositions and use thereof 失效
    FerroelektrischeFlüssigkristallzusammensetzungsowie deren Verwendung。

    公开(公告)号:EP0499482A1

    公开(公告)日:1992-08-19

    申请号:EP92301230.6

    申请日:1992-02-14

    IPC分类号: C09K19/46 C09K19/42

    摘要: A ferroelectric liquid crystal composition including: at least one compound of the formula (I):

    [where - A - represents 1,4-phenylene or 1,4-cyclohexylene group; - B - represents 1,4-phenylene or 2,6-naphthylene group; and R and R′ are, the same or different, a substituted or unsubstituted straight or branched chain alkyl or alkoxy group having 4-15 carbon atoms],
    at least one compound of the formula (II):

    [where k and j are 0 or 1 and k + j = 1; and R and R′ have the same meaning as defined in the formula (I)]
    and a compound selected from the group consisting of a compound of the formula (IV):

    [where R I represents a substituted or unsubstituted straight or branched chain alkyl or alkoxy group having 1-15 carbon atoms; R¹¹ represents a straight or branched chain alkyl group;

    represents 1,4-cyclohexylene, 1,4-phenylene or 2,5-pyrimidinylene group; X is a hydrogen or halogen atom or a cyano group; Y is -COO- or a single bond; Z is a hydrogen atom or a methyl group; k is 0 or 1; and * represents an asymmetric carbon atom]
    and a compound of the formula (V):

    [where R¹ and R¹′ are each a substituted or unsubstituted straight or branched chain alkyl or alkoxy group having 1-15 carbon atoms;

    is 1,4-cyclohexylene or 1,4-phenylene group; is a hydrogen atom or a methyl group; and * represents an asymmetric carbon atom].

    摘要翻译: 一种铁电液晶组合物,其包含:至少一种式(I)的化合物:其中A表示1,4-亚苯基或1,4-亚环己基; -B-表示1,4-亚苯基或2,6-亚萘基; 和R和R min相同或不同,具有4-15个碳原子的取代或未取代的直链或支链烷基或烷氧基],至少一种式(II)化合物:其中k和 j为0或1,k + j = 1; 和R和R min具有与式(I)中所定义相同的含义]和选自式(IV)的化合物的化合物:其中R 1表示取代或未取代的 具有1-15个碳原子的直链或支链烷基或烷氧基; R 1表示直链或支链烷基; 代表1,4-亚环己基,1,4-亚苯基或2,5-嘧啶基; X是氢或卤素原子或氰基; Y是-COO-或单键; Z是氢原子或甲基; k为0或1; 和*表示不对称碳原子]和式(V)化合物:其中R 1和R 1分别为取代或未取代的具有1- 15个碳原子; 是1,4-亚环己基或1,4-亚苯基; 是氢原子或甲基; 和*表示不对称碳原子]。

    Ferroelectric liquid crystal composition and liquid crystal device using the same
    9.
    发明公开
    Ferroelectric liquid crystal composition and liquid crystal device using the same 失效
    FerroelektrischeFlüssigkristallzusammensetzungsowieFlüssigkristallvorrichtungzu deren Verwendung。

    公开(公告)号:EP0495686A2

    公开(公告)日:1992-07-22

    申请号:EP92300479.0

    申请日:1992-01-20

    摘要: A ferroelectric liquid crystal composition including : at least one optically active compound of the formula (I) :
    where R 1 and R 2 are, the same or different, a substituted or unsubstituted straight or branched chain alkyl group having 1 to 15 carbon atoms, k represents an integer of 0 or 1, and * represents an asymmetric carbon atom ; and at least one compound selected from the group consisting of: compounds of the formula (II) :
    where R 3 and R 4 are a straight or branched chain alkyl or alkoxy group having 1-15 carbon atoms,
    each represent
    X represents -O-, -CO- or a single bond, m and n are independently an integer of 0 or 1 ; compounds of the formula (III) :
    where R 5 and R 6 are, the same or different, a straight or branched chain alkyl or alkoxy group having 1-15 carbon atoms, and p is an integer of 0 or 1 ; said ferroelectric liquid crystal composition exhibiting at least nematic phase, smectic A phase and smectic C phase.

    摘要翻译: 一种铁电液晶组合物,其包含:至少一种式(I)的光学活性化合物:其中R 1和R 2相同或不同的取代或未取代的直链或支链烷基 具有1至15个碳原子,k表示0或1的整数,*表示不对称碳原子; 和选自下列的化合物中的至少一种化合物:式(II)化合物:其中R 3和R 4是具有1-15个碳原子的直链或支链烷基或烷氧基的CHEM, 各自表示 X表示-O-,-CO-或单键,m和n独立地为0或1的整数; 式(III)化合物:其中R 5和R 6相同或不同,具有1-15个碳原子的直链或支链烷基或烷氧基,其中p是整数 0或1; 所述铁电液晶组合物至少显示向列相,近晶相A和近晶相C。