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    • 96. 发明授权
    • Liquid crystal composition and electro-optic display device
    • 液晶组成和电光显示装置
    • US5776366A
    • 1998-07-07
    • US741720
    • 1996-10-31
    • Yoshitaka TomiTetsuya MatsushitaFusayuki TakeshitaKatsuyuki MurashiroEtsuo Nakagawa
    • Yoshitaka TomiTetsuya MatsushitaFusayuki TakeshitaKatsuyuki MurashiroEtsuo Nakagawa
    • G02F1/13C09K19/02C09K19/30C09K19/46C09K19/58C09K19/52
    • C09K19/586C09K19/0208C09K19/3001C09K19/3003C09K19/46C09K2019/0444
    • A chiral, nematic liquid crystal composition suitable to STN-LCD, having superior steepness, rapid response and being able to prevent occurrence of high order and low order domain of LCD, which composition contains as a first component, at least one compound expressed by the formula (1) ##STR1## as a second component, at least one compound expressed by the formula (2) ##STR2## and as a third component, at least one compound of benzonitrile group, ##STR3## and further having a chiral dopant as a fourth component. In the above formulas, R.sup.1 and R.sup.2 each represent a linear alkyl group of 1 to 10 carbon atoms, A and B each represent trans-1,4-cyclohexylene or 1,4-phenylene, and R.sup.3 represents a linear alkyl group of 1 to 10 carbon atoms, or a group wherein an optional --CH.sub.2 -- or two or more not adjacent --CH.sub.2 --s present in the above group are replaced by --O-- or --CH=CH--; X.sup.1 and X.sup.2 each independently represent H or F; C represents --COO--, --C.sub.2 H.sub.4 --, trans-1,4-cyclohexylene or 1,4-phenylene; and n represents 0 or 1, and as a fourth component, a chiral dopant in a quantity in which a ratio (d/p) of the thickness (d.mu.m) of a liquid crystal layer in a liquid crystal cell to be filled with the liquid crystal composition to the helical pitch thereof (p.mu.m) is 0.03 to 2.0.
    • 适用于STN-LCD的手性向列型液晶组合物,其具有优异的陡度,快速响应性并且能够防止LCD的高阶和低阶畴的发生,该组合物含有作为第一组分的至少一种化合物 式(1)作为第二组分的至少一种化合物作为第二组分,至少一种由式(2)表示的化合物(2)和作为第三组分的至少一种苄腈基化合物,< IMAGE> 3),并且还具有手性掺杂剂作为第四组分。 在上式中,R 1和R 2各自表示1〜10个碳原子的直链烷基,A和B各自表示反式-1,4-亚环己基或1,4-亚苯基,R3表示1〜 10个碳原子,或其中存在于上述基团中的任选的-CH 2 - 或两个或更多个不相邻的-CH 2 -S取代为-O-或-CH = CH-的基团; X1和X2各自独立地表示H或F; C表示-COO - , - C 2 H 4 - ,反式-1,4-亚环己基或1,4-亚苯基; n表示0或1,作为第四成分的手性掺杂剂,其中液晶单元中待填充的液晶层的厚度(dμm)的比值(dμm) 液晶组合物的螺旋间距(μm)为0.03〜2.0。
    • 97. 发明授权
    • Cyclohexane derivatives, liquid crystal compositions comprising the same and liquid crystal display devices
    • 环己烷衍生物,含有它们的液晶组合物和液晶显示装置
    • US06500503B2
    • 2002-12-31
    • US09842254
    • 2001-04-26
    • Koichi ShibataShuichi MatsuiHiroyuki TekeuchiKatsuyuki KawanoYasuhiro KuboEtsuo Nakagawa
    • Koichi ShibataShuichi MatsuiHiroyuki TekeuchiKatsuyuki KawanoYasuhiro KuboEtsuo Nakagawa
    • C09K1930
    • C07D239/26C07C17/16C07C17/18C07C17/2635C07C25/18C07C25/24C07C45/29C07C45/513C07C255/50C07C255/54C07C2601/14C07D319/06C07D339/08C09K19/3001C09K19/3028C09K19/3402C09K19/42C09K19/44C09K19/46C09K2019/0448C09K2019/0451C09K2019/3422Y10T428/10C07C22/08C07C49/813C07C47/24
    • Liquid crystalline compounds are disclosed which have large dielectric anisotropy and relatively low viscosity, and which are represented by formula (1) wherein R1 represents hydrogen or C1-C15 alkyl in which one or more non-adjacent methylene may be replaced by oxygen, sulfur or —CH═CH— and one or more hydrogen may be replaced by halogen; R2 represents hydrogen, cyano, halogen or C1-C15 alkyl in which one or more non-adjacent methylene may be replaced by oxygen, sulfur or —CH═CH— and one or more hydrogen may be replaced by halogen; L represents halogen or hydrogen; A1, A2, A4 and A5 each independently represent trans-1,4-cyclohexylene or 1,4-phenylene, one or more —CH2— in the trans-1,4-cyclohexylene may be replaced by oxygen or sulfur, one or more ═CH— in the 1,4-phenylene may be replaced by nitrogen, and one or more hydrogen in the 1,4-phenylene ring may be replaced by halogen; A3represents trans-1,4-cyclohexylene in which one or more —CH2— may be replaced by oxygen or sulfur; Z1,Z2,Z3 and Z4 each independently represent —COO—, —OCO—, —CH2CH2—, —(CH2)4—, —CH2O —, —OCH2—, —CF2O—, —OCF2— or a single bond; Q represents —CF2CH2— or —CH2CF2—; and k, l, m and n each independently represent 0 or 1 with the condition of k+l+m+n≦2. Further, liquid crystal compositions comprising at least one liquid crystalline compound of formula (1) and liquid crystal display devices composed of the compositions are disclosed.
    • 公开了具有大介电各向异性和相对低粘度的液晶化合物,其由式(1)表示,其中R 1表示氢或C 1 -C 15烷基,其中一个或多个不相邻的亚甲基可被氧,硫或 -CH = CH-,一个或多个氢可被卤素取代; R 2表示氢,氰基,卤素或C 1 -C 15烷基,其中一个或多个不相邻的亚甲基可被氧,硫或-CH = CH-代替,并且一个或多个氢可被卤素取代; L表示卤素或氢; A1,A2,A4和A5各自独立地表示反式-1,4-亚环己基或1,4-亚苯基,反式-1,4-亚环己基中的一个或多个-CH 2 - 可被氧或硫代替,一个或多个 = 1,4-亚苯基中的CH-可以被氮代替,1,4-亚苯基环中的一个或多个氢可被卤素取代; A3表示反式-1,4-亚环己基,其中一个或多个-CH 2 - 可被氧或硫取代; Z 1,Z 2,Z 3和Z 4各自独立地表示-COO - , - OCO - , - CH 2 CH 2 - , - (CH 2)4 - , - CH 2 O - , - OCH 2 - , - CF 2 O-,-OCF 2-或单键; Q表示-CF 2 CH 2 - 或-CH 2 CF 2 - ; 并且k,l,m和n各自独立地表示0或1,条件为k + 1 + m + n <= 2。 此外,公开了包含至少一种式(1)的液晶化合物和由该组合物组成的液晶显示装置的液晶组合物。