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    • 91. 发明授权
    • Liquid crystalline esters and mixtures
    • 液晶酯和混合物
    • US4550981A
    • 1985-11-05
    • US530830
    • 1983-09-09
    • Martin PetrzilkaMartin SchadtAlois Villiger
    • Martin PetrzilkaMartin SchadtAlois Villiger
    • C07C29/147C07C31/135C07C61/12C07C61/39C07C63/49C07C63/72C07C69/773C07C69/90C07C205/39C07C205/43C07C255/34C07C255/50C07C255/51C09K19/00C09K19/20C09K19/30G02F1/13C07C79/26C07C121/52
    • C07C255/00C07C205/43C07C29/147C07C309/00C07C31/1355C07C61/12C07C61/39C07C63/49C07C63/72C09K19/2007C09K19/3068C07B2200/09C07C2101/14
    • Compounds of the formula ##STR1## wherein X.sup.2 is a single covalent bond or --COO--; X.sup.1 is a single covalent bond, --COO--, --CH.sub.2 CH.sub.2 -- or when X.sup.2 is --COO--, X.sup.1 also can be p--C.sub.6 H.sub.4 --, p--C.sub.6 H.sub.4 --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --p--C.sub.6 H.sub.4, p--C.sub.6 H.sub.4 --COO-- or --COO--p--C.sub.6 H.sub.4 ; ring A is a benzene ring or trans-1,4-cyclohexylene; ring B is a benzene ring or when X.sup.2 is --COO-- and X.sup.1 is a single covalent bond, --COO-- or --CH.sub.2 CH.sub.2 --, ring B also can be trans-1,4-cyclohexylene; Z.sup.1, Z.sup.2 and Z.sup.3 individually are hydrogen or when positioned on a benzene ring which is not linked directly with a further ring via a single covalent bond, Z.sup.1, Z.sup.2 and Z.sup.3 also can be halogen, cyano or methyl; Y.sup.2 is cyano, nitro, 2,2-dicyanovinyl or when Y.sup.1 is hydrogen Y.sup.2 also can be 2,2-dicyano-1-methylvinyl; Y.sup.1 is halogen, cyano, C.sub.1 -C.sub.3 -alkyl or, when X.sup.1 includes a benzene ring or --COO-- or Y.sup.2 is nitro or at least one of Z.sup.1 and Z.sup.2 is other than hydrogen, Y.sup.1 also can be hydrogen; and R.sup.1 is C.sub.1 -C.sub.12 -alkyl or when positioned on a benzene ring R.sup.1 also can be C.sub.1 -C.sub.12 -alkoxy, their manufacture and use in liquid crystalline mixtures are described.
    • 其中X 2是单个共价键或-COO-; X 1是单个共价键,-COO - , - CH 2 CH 2 - 或当X 2是-COO-时,X 1也可以是对-C 6 H 4 - ,p-C 6 H 4 -CH 2 CH 2 - , - CH 2 CH 2-p-C 6 H 4,p-C 6 H 4 -CO 2 - 或-COO-p-C6H4; 环A是苯环或反式-1,4-亚环己基; 环B为苯环,或者当X2为-COO-且X1为单一共价键时,可以为-COO-或-CH2CH2-,环B也可为反式-1,4-亚环己基; Z1,Z2和Z3分别为氢或当位于不与另一个环通过单个共价键直接连接的苯环上时,Z 1,Z 2和Z 3也可以是卤素,氰基或甲基; Y2是氰基,硝基,2,2-二氰基乙烯基或当Y1是氢时,Y2也可以是2,2-二氰基-1-甲基乙烯基; Y1是卤素,氰基,C1-C3-烷基,或当X1包括苯环或-COO-或Y2是硝基或Z1和Z2中的至少一个不是氢时,Y1也可以是氢; R1为C1-C12烷基,或者当位于苯环R1上时,也可以是C1-C12-烷氧基,它们在液晶混合物中的制备和应用被描述。
    • 92. 发明授权
    • Multiring liquid crystal esters
    • 多种液晶酯
    • US4526704A
    • 1985-07-02
    • US512846
    • 1983-07-11
    • Martin PetrzilkaMartin SchadtAlois Villiger
    • Martin PetrzilkaMartin SchadtAlois Villiger
    • C07C69/773C09K19/20C09K19/30C09K19/44C09K3/34C07C69/78G02F1/13
    • C09K19/2007C09K19/3068C09K19/44
    • Compounds of the formula ##STR1## wherein n is 0 or 1; one of X.sup.1 and X.sup.2 is --COO-- or --OOC-- and the other is a single covalent bond or --CH.sub.2 CH.sub.2 --; X.sup.3 and X.sup.4 individually are a single covalent bond or --CH.sub.2 CH.sub.2 --, with the proviso that at most one of X.sup.1, X.sup.2, X.sup.3 and X.sup.4 is --CH.sub.2 CH.sub.2 --; rings A.sup.1 and A.sup.5 individually are a group of the formula ##STR2## or trans-1,4-cyclohexylene; rings A.sup.2, A.sup.3 and A.sup.4 individually are a group of formula II or, when ring A.sup.2, A.sup.3 or A.sup.4 is not linked with at least one of the other two of these rings by a single covalent bond then such ring also can be trans-1,4-cyclohexylene, with the proviso that at least one of rings A.sup.1 through A.sup.5 is a group of formula II; Y is hydrogen, or when Y is attached to a ring of formula II which is not linked with another ring via a single covalent bond, Y also can be fluorine, chlorine or methyl; and R.sup.1 and R.sup.2 individually are straight-chain alkyl of 1-7 carbon atoms, or when R.sup.1 or R.sup.2 is attached to a ring of formula II such R.sup.1 or R.sup.2 also can be straight-chain alkoxy of 1 to 7 carbon atoms;their manufacture and use for electro-optical and chromatographical purposes and liquid crystalline mixtures containing these compounds are described.
    • 式(Ⅰ)化合物其中n为0或1; X1和X2之一是-COO-或-OOC-,另一个是单个共价键或-CH 2 CH 2 - ; X 3和X 4分别是单个共价键或-CH 2 CH 2 - ,条件是X 1,X 2,X 3和X 4中至多一个是-CH 2 CH 2 - ; 环A1和A5分别是式II或反式-1,4-亚环己基的基团; 环A2,A3和A4分别是式II的基团,或者当环A2,A3或A4不与单个共价键中的至少一个这些环中的至少一个连接时,该环也可以是反式-1 ,4-环己烯基,条件是环A1至A5中的至少一个是式II的基团; Y是氢,或当Y连接到通过单个共价键不与另一个环连接的式II的环时,Y也可以是氟,氯或甲基; R1和R2分别为1-7个碳原子的直链烷基,或当R1或R2连接到式II的环上时,R 1或R 2也可以是1至7个碳原子的直链烷氧基; 描述了其用于电光学和色谱目的的制造和用途以及含有这些化合物的液晶混合物。
    • 97. 发明授权
    • Color switch
    • 彩色开关
    • US06801272B2
    • 2004-10-05
    • US10182832
    • 2002-08-02
    • Jürg FuenfschillingMartin Schadt
    • Jürg FuenfschillingMartin Schadt
    • G02F11347
    • G02F1/13473G02B5/3016G02F1/133533G02F1/133536G02F1/141G02F2201/343G02F2203/34H04N9/31
    • A color switch is provided for selectively switching between color bands for use, for example, in projection optics and direct view optics. The color switch has fewer and thinner layers than in the prior art, but exhibits equal or better color purity and light efficiency. The color switch or filter includes a first filter section for selectively blocking green light and including a cholesteric filter, a quarter wave plate and a liquid crystal switch. The color filter has a second filter section for selectively blocking blue and/or red light including a stack of retarder elements and liquid crystal switches, preferably Deformed Helical Ferroelectric (DHF) switches. The parameters of the filter are determined by an optimization process including minimizing a cost function (G) with respect to the parameters of the second filter section. A polarizing element may be positioned in front of the stack and may be of a type which does not absorb radiation.
    • 提供了一种颜色开关,用于选择性地在例如投影光学元件和直视图光学器件中使用的色带之间切换。 颜色开关具有比现有技术更薄和更薄的层,但是表现出相同或更好的色纯度和光效。 彩色开关或滤光器包括用于选择性地阻挡绿光并包括胆甾型滤光器,四分之一波片和液晶开关的第一滤光器部分。 滤色器具有用于选择性地阻挡蓝色和/或红色光的第二滤光器部分,包括一组延迟元件和液晶开关,优选变形螺旋铁电(DHF)开关。 滤波器的参数通过优化处理来确定,包括相对于第二滤波器部分的参数最小化成本函数(G)。 偏振元件可以位于堆叠的前面,并且可以是不吸收辐射的类型。
    • 99. 发明授权
    • Bistable ferroelectric liquid crystal cell
    • 双稳态铁电液晶电池
    • US6046789A
    • 2000-04-04
    • US971176
    • 1997-11-17
    • Jurg FunfschillingMartin Schadt
    • Jurg FunfschillingMartin Schadt
    • G02F1/137C09K19/02G02F1/1335G02F1/141G02F1/13
    • C09K19/0225G02F1/141
    • Known liquid crystal cells have a nematic liquid crystal configuration and, in accordance with this configuration, are referred to as TN or STN cells. It is true that such cells are adequate for many applications. However, their image quality is dependent to a very great extent on the user's angle of view. Furthermore, TN and STN cells require a continuously applied signal voltage if it is intended to display or store information on one. Bistable liquid crystal cells having a ferroelectric, chiral smectic liquid crystal layer do not have these disadvantages of nematic display cells. However, the commercial production of such bistable display cells has scarcely become established to date. This is in particular because they are not very suitable for reliably storing information or do not permit absolutely equivalent switching between the two bistable positions of the director. The invention now proposes a novel, bistable liquid crystal cell which avoids precisely these disadvantages. Starting from the SBFLC display cell disclosed in EP-A 0 405 346, the display cell according to the invention is distinguished in that its liquid crystal layer contains polymerized molecules and is formed, by treatment with light and an alternating electric field, in such a way that it has two equivalent, bistable switching states.
    • 已知的液晶单元具有向列型液晶结构,根据该结构,称为TN或STN单元。 这样的电池确实适用于许多应用。 然而,他们的图像质量在很大程度上取决于用户的观点。 此外,如果TN和STN单元旨在将信息显示或存储在一个上,则需要连续施加的信号电压。 具有铁电手性近晶液晶层的双稳态液晶单元不具有向列型显示单元的这些缺点。 然而,迄今为止,这种双稳态显示单元的商业生产几乎没有建立。 这特别是因为它们不太可靠地存储信息,或者不允许在导演的两个双稳态位置之间进行绝对等效的切换。 本发明现在提出了一种新颖的双稳态液晶单元,其精确地避免了这些缺点。 从EP-A 0 405 346中公开的SBFLC显示单元开始,根据本发明的显示单元的特征在于,其液晶层包含聚合分子,并且通过用光和交变电场处理形成在这样的 它具有两个等效的双稳态切换状态。