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1. 发明申请

WO1990010629A1 OPTICALLY ACTIVE DIOXOLANYLACRYLIC AND DIOXOLANYLPROPIONIC ACID ESTERS CONTAINING A MESOGENIC RESIDUE, A PROCESS FOR MANUFACTURING THEM AND THEIR USE AS DOPING AGENTS IN LIQUID CRYSTAL MIXTURES 审中-公开
标题翻译：含有杀虫剂的光学活性二氧化丙烯酸和二油酸乳酸酯，一种制备它们的方法及其作为液体混合物中掺入剂的用途
公开(公告)号：WO1990010629A1
公开(公告)日：1990-09-20
申请号：PCT/EP1990000369
申请日：1990-03-07
申请人： HOECHST AKTIENGESELLSCHAFT , MÜLLER, Ingrid , DÜBAL, Hans-Rolf , ESCHER, Klaus , HEMMERLING, Wolfgang , ILLIAN, Gerhard , MURAKAMI, Mikio , OHLENDORF, Dieter , WINGEN, Rainer
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： C07D405/12
CPC分类号： C07D317/72 , C07D405/12 , C09K19/0225 , C09K19/3405 , C09K19/3466 , C09K19/3491 , C09K19/3497 , C09K19/588
摘要： Optically active 1,3 dioxolane derivatives containing a mesogenic residue, of the general formula (I), are suitable as doping agents especially in ferro-electrical liquid crystal mixtures. The meanings of the symbols in the general formula are: R1 is constructed similarly to the part of the general formula to the right of X or an alkyl or alkylene residue which may be substituted; R?2, R3, R4¿ = H or alkyl (R4 may also be alkenyl) which may also be substituted [R2, R3 together with the C(2) of the dioxolane ring may be a cycloaliphate or a keto group]; j, l, n = zero, 1 or 2 and k, m = zero or 1 provided that if k = zero, n = zero also, if n = zero, m = zero also and l « j + l + n « 3; -A?1, -A2, -A3¿ = aromatic, heterocyclic or aliphatic ring system; -M1,- M2 = -CO-O, -O-CO, -CH¿2?CH2, -CH=CH, -CH2O, -OCH2, -C=C and X = CH=CH, CH2-CH2. The special advantage of the compounds with the general formula (I) is that they can induce a high twisting capacity in a cholesteric phase without substantially affecting in the smectic C* phase the value of the spontaneous polarisation already in the mixture. They are therefore suitable for pitch compensation, especially for ferro-electrical liquid crystal mixtures.

2. 发明申请

WO1990016007A1 LIQUID-CRYSTAL SWITCHING AND DISPLAY ELEMENT 审中-公开
标题翻译：液晶开关和显示元件
公开(公告)号：WO1990016007A1
公开(公告)日：1990-12-27
申请号：PCT/EP1990000901
申请日：1990-06-09
申请人： HOECHST AKTIENGESELLSCHAFT , ESCHER, Claus , DÜBAL, Hans-Rolf , HARADA, Takamasa , ILLIAN, Gerhard , MURAKAMI, Mikio , OHLENDORF, Dieter
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： G02F01/137
CPC分类号： G02F1/141 , C09K19/0225 , C09K19/3463 , G02F1/1416
摘要： The liquid-crystal element described consists of a housing with transparent discs and electrodes, polarisation foils, orientation films, plus a smectic ferro-electric liquid-crystalline material. This FLC material is dielectrically positive (i.e. Δε>0), with the result that the liquid-crystal element has a high contrast and, in addition, is switchable even when high voltages (e.g. greater than 15 V) are applied. Unlike LC elements with dielectrically negative material, no change in surface texture occurs under such conditions. The increase in the effective cone angle produced by applying an electric field to the element described above can also be used to produce so-called grey shades.

3. 发明申请

WO1990011336A1 LIQUID CRYSTAL MIXTURES, IN PARTICULAR FERROELECTRIC LIQUID CRYSTAL MIXTURES 审中-公开
标题翻译：液晶混合物，特别是电磁液晶混合物
公开(公告)号：WO1990011336A1
公开(公告)日：1990-10-04
申请号：PCT/EP1990000458
申请日：1990-03-21
申请人： HOECHST AKTIENGESELLSCHAFT , DÜBAL, Hans-Rolf , ESCHER, Claus , HARADA, Takamasa , HEMMERLING, Wolfgang , ILLIAN, Gerhard , MÜLLER, Ingrid , MURAKAMI, Mikio , OHLENDORF, Dieter , WINGEN, Rainer
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： C09K19/58
CPC分类号： C09K19/46 , C09K19/3463 , C09K19/58 , C09K19/588
摘要： Liquid crystal mixtures, in particular ferroelectric crystal mixtures, are based on at least 2 mixing components of general formula (I) and at least one carboxylic acid ester of general formula (II), (III) or (IV), in which X = 0 or a single bond. The ferroelectric mixtures contain, in addition, a dopant in the form of an optically active compound. The mixture possess properties such as high contrast, low melting point and brief switching times which are advantageous in electrooptical display elements.
摘要翻译：液晶混合物，特别是铁电晶体混合物，基于至少2种通式（I）的混合组分和至少一种通式（II），（III）或（IV）的羧酸酯，其中X = 0或单键。此外，铁电混合物还含有光学活性化合物形式的掺杂剂。该混合物具有诸如高对比度，低熔点和短切换时间的特性，这在电光显示元件中是有利的。

4. 发明申请

WO1991008509A1 USE OF FLUORINATED AROMATIC POLYAMIDES AS THE ORIENTATION LAYER FOR LIQUID CRYSTAL SWITCHING AND DISPLAY DEVICES 审中-公开
标题翻译：使用氟化芳族聚酰胺作为液晶切换和显示装置的方向层
公开(公告)号：WO1991008509A1
公开(公告)日：1991-06-13
申请号：PCT/EP1990001893
申请日：1990-11-12
申请人： HOECHST AKTIENGESELLSCHAFT , DÜBAL, Hans-Rolf , MURAKAMI, Mikio , HERRMANN-SCHÖNHERR, Otto , SCHNELLER, Arnold
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： G02F01/1337
CPC分类号： C08G69/32 , G02F1/133711 , Y10T428/1018 , Y10T428/31725
摘要： The invention relates to the use of substituted aromatic polyamides as the orientation layer for liquid crystal switching and display devices. The polyamides contain structural units of formula (I), where the symbols have the following meaning: -X- = (a), (b), (c), -Y- = (d), where R?1 and R2¿ are the same or different and stand for perfluorinated alkyl with 1 to 4 carbon atoms, R?3 and R4¿ are the same or different and stand for H or CF¿3?, and -W- stands for -O-, -C(CH3)2-, -C(CF3)2, for example. Orientation layers made from these polyamides cure at low temperatures, possess good adhesive strength and high transparency and permit a large surface tilt.

5. 发明申请

WO1990015360A1 FERROELECTRIC LIQUID CRYSTAL DISPLAY WITH GREY LEVELS AND/OR A CONTINUOUS GREY SCALE 审中-公开
标题翻译：具有灰度级和/或连续灰度级的电磁液晶显示器
公开(公告)号：WO1990015360A1
公开(公告)日：1990-12-13
申请号：PCT/EP1990000761
申请日：1990-05-11
申请人： HOECHST AKTIENGESELLSCHAFT , DÜBAL, Hans-Rolf , ESCHER, Claus , ILLIAN, Gerhard , MURAKAMI, Mikio , OHLENDORF, Dieter
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： G02F01/1333
CPC分类号： G02F1/1333 , G02F1/133345 , G02F1/136213 , G02F1/141 , G02F2203/30
摘要： The invention concerns a process for producing grey levels for liquid crystal displays which do not require short switching times, bondings or drivers, and which do not cause undesirable colour sampling. Colour sampling is prevented because the thickness of the liquid crystal layers remains constant over the entire switching region of the display, i.e., for all image points. In addition, to obviate the use of leads, drivers or shorter switching times, the effective electric field is varied in the space above an image point. The basis of the invention is therefore the division of an image point (the size of which is usually approximately 50 to 1000 mu m) into partial surfaces or regions in which, at constant external voltage, the effective electric field is different while the thickness of the liquid crystal layer does not change. The electric field can be varied by varying the distance between the electrode (2, 2') and the LC layer (5) above the surface of an image point, or by varying the dielectric constant of the layer (3, 3') between the electrode and the LC layer above the surface of an image point.
摘要翻译：本发明涉及一种用于生产液晶显示器的灰度级的方法，其不需要较短的切换时间，粘合或驱动器，并且不会引起不期望的颜色采样。由于液晶层的厚度在显示器的整个切换区域上保持恒定，即对于所有图像点，因此防止了彩色采样。此外，为了避免使用引线，驱动器或更短的开关时间，有效电场在图像点上方的空间中变化。因此，本发明的基础是将图像点（其尺寸通常为约50至1000μm）分割成部分表面或区域，其中在恒定的外部电压下，有效电场不同，而厚度液晶层不变。可以通过改变图像表面之上的电极（2,2'）和LC层（5）之间的距离，或者通过改变图像点之间的层（3,3'）的介电常数来改变电场，电极和LC层在图像点的表面上方。

6. 发明申请

WO1990011335A1 FERROELECTRIC LIQUID CRYSTAL MIXTURES 审中-公开
标题翻译：电磁液晶混合物
公开(公告)号：WO1990011335A1
公开(公告)日：1990-10-04
申请号：PCT/EP1990000457
申请日：1990-03-21
申请人： HOECHST AKTIENGESELLSCHAFT , DÜBAL, Hans-Rolf , ESCHER, Claus , HARADA, Takamasa , HEMMERLING, Wolfgang , ILLIAN, Gerhard , MÜLLER, Ingrid , MURAKAMI, Mikio , OHLENDORF, Dieter , WINGEN, Rainer
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： C09K19/58
CPC分类号： C09K19/3458 , C09K19/46 , C09K19/58 , C09K19/588
摘要： Ferroelectric liquid crystal mixtures are based on at least 2 mixing components of general formula (I) and contain, in addition, at least one optically active dopant from one or more of the following groups: (a) optically active esters of tetrahydrofuran-2-carboxylic acid; (b) optically active aryl-2,3-epoxyalkyl ethers; (c) optically active 1,3-dioxolan-4-yl-ethers. Said mixtures possess high spontaneous polarization and permit substantial compensation of the pitch of the helix in a nematic phase.

7. 发明申请

WO1998029780A1 METHOD FOR PRODUCING ORIENTATING LAYERS FOR LIQUID CRYSTAL DISPLAYS 审中-公开
标题翻译：用于生产取向层用于液晶显示器
公开(公告)号：WO1998029780A1
公开(公告)日：1998-07-09
申请号：PCT/EP1997007060
申请日：1997-12-16
申请人： HOECHST RESEARCH & TECHNOLOGY DEUTSCHLAND GMBH & CO. KG , SCHÖSSLER, Ulrich , DÜBAL, Hans-Rolf , DÖSSEL, Karl-Friedrich
发明人： HOECHST RESEARCH & TECHNOLOGY DEUTSCHLAND GMBH & CO. KG
IPC分类号： G02F01/1337
CPC分类号： G02F1/133711
摘要： The invention relates to a method for producing water-resistant polymer layers on a substrate. According to said method, an aqueous polymer dispersion not containing salts for raising electric conductivity is applied to the substrate and heated to a temperature of between 80 DEG C and 300 DEG C. The resulting water-resistant layers are orientating layers and the substrate is a substrate for liquid crystal displays.
摘要翻译：在用于在基板上的聚合物的耐水层的制备方法，不含有盐，以增加导电性的聚合物水分散体，施加到衬底并加热到范围从80℃至300℃的温度下在此，防水层的取向层和基片是用于液晶显示器的基板。

8. 发明申请

WO1990011547A1 FERROELECTRIC LIQUID CRYSTAL SYSTEMS WITH HIGH SPONTANEOUS POLARIZATION AND GOOD ORIENTATION PROPERTIES 审中-公开
标题翻译：具有高自发极化和良好定向特性的电磁液晶系统
公开(公告)号：WO1990011547A1
公开(公告)日：1990-10-04
申请号：PCT/EP1990000459
申请日：1990-03-21
申请人： HOECHST AKTIENGESELLSCHAFT , ESCHER, Claus , DÜBAL, Hans-Rolf , HARADA, Takamasa , HEMMERLING, Wolfgang , ILLIAN, Gerhard , MÜLLER, Ingrid , MURAKAMI, Mikio , OHLENDORF, Dieter , WINGEN, Rainer
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： G02F01/137
CPC分类号： C09K19/3441 , C09K19/0225 , C09K19/588 , G02F1/141
摘要： Ferroelectric liquid crystal systems with high spontaneous polarization, in particular greater than 35 nC cm-2, and good orientation properties in the ferroelectric phase, in particular, the S¿C?* phase, contain at least three different optically active compounds, preferably dopants in a non-optically active basic mixture which has a nematic phase above the smectic phase. The optically active compounds are chosen so that they do not all induce a helix with an identical direction of rotation in the nematic phase. Their relative concentration is chosen so that the overall resulting pitch of the helix in the total cholesterol phase is not less than 10 νm.

9. 发明申请

WO1988003525A1 CHIRAL ARYLOXY PROPIONIC ACID ESTERS AND THEIR USE AS DOPING AGENT IN LIQUID CRYSTAL PHASES 审中-公开
标题翻译： CHIRAL ARYLOXY丙酸酯及其作为液晶相的代谢剂使用
公开(公告)号：WO1988003525A1
公开(公告)日：1988-05-19
申请号：PCT/EP1987000653
申请日：1987-11-02
申请人： HOECHST AKTIENGESELLSCHAFT , WINGEN, Rainer , DÜBAL, Hans-Rolf , HEMMERLING, Wolfgang , MÜLLER, Ingrid , OHLENDORF, Dieter
发明人： HOECHST AKTIENGESELLSCHAFT
IPC分类号： C07C69/712
CPC分类号： C07D239/26 , C07D239/34 , C09K19/586 , C09K19/588
摘要： Aryl carboxylic acid esters of 2-hydroxy propionic acid esters are known in particular as doping agents for converting tilted smectic liquid crystals into ferro-electric phases. There is interest in other doping agents in order to vary the caracteristics of ferro-electric liquid crystal phases for practical applications. New chiral aryloxy propionic acid esters of the general formula (I) are described in which R is a straight-chained alkyl or alkyloxy residue with 1 to 16 C atoms or one branched alkyl or alkyloxy residue with 4 to 16 C atoms, whereby one or two non-adjacent CH2 groups may be replaced by one sulfur and/or oxygen atom; A is one or two or three aromatic or hetero-aromatic rings, which are connected to one another directly or by one or two COO groups; A is a chemical bond or one or two aromatic or hetero-aromatic rings which are directly connected to one another; R2 is a) if B is a chemical bond, a straight-chained alkyl residue with 1 to 15 C atoms, in which one or two CH2 non-adjacent groups can be replaced by one oxygen and/or sulfur atom; or an alkyl residue with 2 to 10 C atoms, which contains one asymmetric C atom, substituted with CH3, halogen or a COOC2H5 group; or also an alkyl residue with 3 to 10 C atoms, which contains two adjacent asymmetric C atoms, of which one is substituted with halogen and the other with a CH3 group, or which form jointly with an O atom an oxyrane ring; or b) if B is one or two aromatic or hetero-aromatic rings directly linked to one another, alkyl residues as mentioned under a) or alkoxy residues with the same number of C atoms and same structure of the alkyl group as in a).
摘要翻译： 2-羟基丙酸酯的芳基羧酸酯特别是用于将倾斜的近晶液晶转化成铁电相的掺杂剂。为了在实际应用中改变铁电液晶相的特性，对其它掺杂剂有兴趣。描述了通式（I）的新的手性芳氧基丙酸酯，其中R 1是具有1至16个C原子的直链烷基或烷氧基残基或具有4至16个C原子的一个支链烷基或烷氧基残基，一个或两个不相邻的CH 2基团可被一个硫和/或氧原子取代; A是一个或两个或三个芳族或杂芳族环，它们彼此直接连接或由一个或两个COO基彼此连接; A是一个化学键或一个或两个彼此直接连接的芳香环或杂芳环; R2是a）如果B是化学键，则具有1至15个C原子的直链烷基残基，其中一个或两个CH 2不相邻基团可被一个氧和/或硫原子代替; 或具有2至10个C原子的烷基残基，其含有被CH 3，卤素或COOC 2 H 5基团取代的一个不对称C原子; 或具有3至10个C原子的烷基，其含有两个相邻的不对称C原子，其中一个被卤素取代，另一个与CH3基团取代，或与O原子一起形成氧环; 或b）如果B是一个或两个彼此直接连接的芳族或杂芳族环，则a）所述的烷基残基或具有相同数目的C原子的烷氧基残基和与a）相同的烷基结构。

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