Liquid crystal composition and liquid crystal display device
    41.
    发明授权
    Liquid crystal composition and liquid crystal display device 失效
    液晶组成和液晶显示装置

    公开(公告)号:US5837161A

    公开(公告)日:1998-11-17

    申请号:US822688

    申请日:1997-03-24

    摘要: Liquid crystal compositions having a small value of .gamma. (V.sub.10 /V.sub.90) and a small .tau. (fast response speed) in order to cope especially with high speed response, while satisfying various characteristics required of STN display mode. These compositions comprise at least one compound expressed by formula (I) as a first component; expressed by any one of formulas (II-a) to (II-d) as a second component; and expressed by formula (III) or (IV) as a third component; and as a fourth component, a chiral component in the amount necessary for maintaining the ratio d/P of the cell thickness d (.mu.m) to the pitch length of twist P (.mu.m) in the range of 0.4 to 0.6 when the liquid crystal composition is used for liquid crystal display devices. ##STR1## wherein R.sup.1 to R.sup.9 represent an alkyl group having 1 to 10 carbon atoms; Z.sup.0 to Z.sup.4 represent, for example, --CH.sub.2 CH.sub.2 --; A.sup.1 to A.sup.4, B, C, E, and G independently represent, for example, 1,4-cyclohexylene or 1,4-phenylene; D represents 1,4-cyclohexylene or 1,3-pyrimidine-2,5-diyl; Q.sup.1 represents H or F; and q and m are independently 0 or 1.

    摘要翻译: 在满足STN显示模式所要求的各种特性的同时,为了特别应对高速响应,具有较小的伽马值(V10 / V90)和小的tau(快速响应速度)的液晶组合物。 这些组合物包含至少一种由式(I)表示的化合物作为第一组分; 由式(II-a)至(II-d)中的任一个表示作为第二组分; 并由式(III)或(IV)表示为第三组分; 作为第四成分,将液体厚度d(μm)的比d / P与捻数P(μm)的间距长度保持在0.4〜0.6的范围内所需的量的手性成分, 液晶组合物用于液晶显示装置。 (II-c)(II-c)(II-c)(II-c)(II-d)R6(B)Z2(C)R7(Ⅲ) R8(D)Z3(E)Z4(G)R9(IV)其中R1至R9表示具有1-10个碳原子的烷基; Z 0〜Z 4表示例如-CH 2 CH 2 - ; A1至A4,B,C,E和G独立地表示例如1,4-亚环己基或1,4-亚苯基; D代表1,4-亚环己基或1,3-嘧啶-2,5-二基; Q1表示H或F; q和m独立地为0或1。

    Liquid crystal composition and liquid crystal display element
    43.
    发明授权
    Liquid crystal composition and liquid crystal display element 有权
    液晶组成和液晶显示元件

    公开(公告)号:US06325949B1

    公开(公告)日:2001-12-04

    申请号:US09551641

    申请日:2000-04-18

    IPC分类号: C09K1930

    摘要: The present invention provides a liquid crystal composition comprising a component A being at least one compound selected from the group of compounds represented by Formulas (1-1) and (1-2) described in the specification and a component B being at least one compound selected from the group of compounds represented by Formulas (2-1) and (2-2) described in the specification.

    摘要翻译: 本发明提供一种液晶组合物,其包含成分A为至少一种选自本说明书中所述的由式(1-1)和(1-2)表示的化合物的化合物,组分B为至少一种化合物 选自由说明书中描述的式(2-1)和(2-2)表示的化合物组。

    Liquid crystal composition and liquid crystal display element
    45.
    发明授权
    Liquid crystal composition and liquid crystal display element 失效
    液晶组成和液晶显示元件

    公开(公告)号:US5792387A

    公开(公告)日:1998-08-11

    申请号:US753679

    申请日:1996-11-27

    摘要: A liquid crystal composition comprising, for example, a first component of the formula (1-2), a second component of the formula (2-a) and a third component of the formulas (3) and (4), the respective contents being 3 to 30%, 10 to 60% and 20 to 80%, each by weight, ##STR1## wherein R, R.sup.1, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each independently represent an alkyl group of C.sub.1-10 or an alkenyl group of C.sub.2-10 ; R.sup.7 represents an alkyl group, an alkenyl group or an alkoxymethyl group of C.sub.1-10 ; B.sup.1, C, D and J represent 1,4-cyclohexylene or 1,4-phenylene; E represents 1,4-cyclohexylene or pyrimidine-2,5-diyl; G represents 1,4-cyclohexylene or 1,4-phenylene wherein H at the lateral positions may be replaced by F; Z.sup.1 and Z.sup.6 represent --COO--, --C.sub.2 H.sub.4 -- or a single bond; and Z.sup.5 and Z.sup.7 represent --C--C-- or a single bond.

    摘要翻译: 一种液晶组合物,其包含例如式(1-2)的第一组分,式(2-a)的第二组分和式(3)和(4)的第三组分,各自的含量 (1-2)图像(2-a)R4(C)Z5(D)R5(3)R6( E)Z6(G)Z7(J)R7(4)其中R,R1,R3,R4,R5和R6各自独立地表示C1-10的烷基或C2-10的烯基; R7表示C1-10的烷基,烯基或烷氧基甲基; B1,C,D和J表示1,4-亚环己基或1,4-亚苯基; E表示1,4-亚环己基或嘧啶-2,5-二基; G表示1,4-亚环己基或1,4-亚苯基,其中侧向位置的H可以被F代替; Z 1和Z 6表示-COO - , - C 2 H 4 - 或单键; Z5和Z7表示-C-C-或单键。

    Ferroelectric liquid crystal composition
    50.
    发明授权
    Ferroelectric liquid crystal composition 失效
    铁电液晶组成

    公开(公告)号:US5141670A

    公开(公告)日:1992-08-25

    申请号:US417050

    申请日:1989-10-04

    摘要: A ferroelectic smectic C liquid crystal mixture and a display element having a quick electrooptical response and a good memory property are provided, the ferroelectric mixture having a Ps of 60 nC/cm2 or more and a tilt angle of 24.degree. or more and comprising(A) a first component comprising at least one optically active compound expressed by the formula ##STR1## wherein l and m are 0 or 1, both are not 1; n is an integer of 3 to 8; X and Y are H, F, Cl, or CN, both X and Y are not H; A is --COO-- or --OCO--; and R is C3--8 alkyl or alkoxy , and(B) a second component comprising at least one optically active compound expressed by the formula ##STR2## wherein l, m, n and R are as defined above; and A is --COO--, --OCO--, --CH.sub.2 O-- or --OCH.sub.2 --, a total content of the first and second components being 60 mol % or more in the mixture.

    摘要翻译: 提供了铁电型近晶C液晶混合物和具有快速电光响应和良好记忆性的显示元件,该铁电混合物具有60nC / cm 2以上的Ps和24°以上的倾斜角,并且包含(A )包含由式(I)表示的至少一种光学活性化合物的第一组分,其中l和m为0或1,两者均不为1; n为3〜8的整数, X和Y是H,F,Cl或CN,X和Y都不是H; A是-COO-或-OCO-; 和(B)第二组分,其包含至少一种由式(II)表示的光学活性化合物,其中l,m,n和R如上定义; 且A为-COO-,-OCO-, - CH 2 O-或-OCH 2 - ,该混合物中第一和第二组分的总含量为60mol%或更多。