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    High polarization dopants for ferroelectric liquid crystal compositions
    5.
    发明授权
    High polarization dopants for ferroelectric liquid crystal compositions 失效
    铁电液晶组合物的高极化掺杂剂

    公开(公告)号：US06838128B1

    公开(公告)日：2005-01-04

    申请号：US10068557

    申请日：2002-02-05

    Applicant: Michael Wand ,  Xin Hua Chen

    Inventor： Michael Wand ,  Xin Hua Chen

    IPC: C07D213/65 ,  C07D239/26 ,  C07D307/33 ,  C07D405/12 ,  C09K19/02 ,  C09K19/34 ,  C09K19/58 ,  C07D239/24 ,  C07D307/56 ,  C07D405/02 ,  C09K19/42

    CPC classification number: C07D239/26 ,  C07D213/65 ,  C07D307/33 ,  C07D405/12 ,  C09K19/0225 ,  C09K19/3405 ,  C09K19/588 ,  Y10T428/10

    Abstract: The invention relates to chiral nonracemic liquid crystal compounds which are useful as components in liquid crystal compositions to impart high polarization to the mixture. The materials of this invention can be combined with liquid crystal host materials to impart improved properties to mixtures. Chiral nonracemic compounds of this invention can function as additives or dopants in host materials to impart chirality into an LC material. Most generally the invention provides mixtures containing one or more chiral nonracemic dopants which have a chiral nonracemic tail that is an optionally substituted α-ester γ-lactone of the formula: where * indicates a chiral carbon; R1 is a straight-chain or branched alkyl or alkenyl group wherein one or more non-neighboring carbon atoms can be replaced with an oxygen atom and wherein one or more carbons can be substituted with one or more halogens; R2 and R3, independently of one another, can be hydrogen, a halogen or a lower alkyl or alkenyl group; and X is hydrogen or a lower alkyl group. LC compounds having a chiral nonracemic tail of this general formula have large dipoles (and large spontaneous polarization (Ps)) and when doped into hosts such as achiral smectic C FLC hosts, lead to improved switching speeds of the FLC materials.

    Abstract translation: 本发明涉及手性非水性液晶化合物，其可用作液晶组合物中的组分以赋予混合物高的极化。 本发明的材料可以与液晶主体材料组合以赋予混合物改进的性能。 本发明的手性非芳香化合物可用作宿主材料中的添加剂或掺杂剂，以将手性赋予LC材料。 最普遍地，本发明提供了含有一种或多种手性非线性掺杂剂的混合物，其具有手性非线性尾部，其是任选取代的下式的α-酯γ-内酯：其中*表示手性碳; R1是直链或支链的烷基或烯基，其中一个或多个非相邻碳原子可以被氧原子代替，并且其中一个或多个碳可被一个或多个卤素取代; R2和R3彼此独立地可以是氢，卤素或低级烷基或烯基; X为氢或低级烷基。 具有该通式的手性非线性尾的LC化合物具有大的偶极（和大的自发极化（Ps）），并且当掺杂到诸如非手性近晶C FLC主体的主体中时，导致FLC材料的切换速度提高。

    Liquid crystal compounds having a silane tail with a perfluoroalkyl terminal portion
    6.
    发明授权
    Liquid crystal compounds having a silane tail with a perfluoroalkyl terminal portion 失效
    具有具有全氟烷基末端部分的硅烷尾部的液晶化合物

    公开(公告)号：US06737124B2

    公开(公告)日：2004-05-18

    申请号：US09753749

    申请日：2001-01-03

    Applicant: Neil Gough ,  Xin-Hua Chen ,  William N. Thurmes ,  Michael Wand

    Inventor： Neil Gough ,  Xin-Hua Chen ,  William N. Thurmes ,  Michael Wand

    IPC: C09K1934

    CPC classification number: C09K19/406 ,  C07F7/081 ,  C07F7/0812 ,  C09K19/408 ,  Y10T428/10

    Abstract: Chiral nonracemic, chiral racemic and achiral compounds useful as component of LC compositions which have a silane tail group which is partially fluorinated. The silane tail group comprises a perfluoroalkyl group. The silane tail group of this invention has the formula: where k is 0 or an integer ranging from 1-10; m and n are integers ranging from 1 to about 20; j is 0 or an integer ranging from 1 to 20; Z is —O— or a single bond; R1, R1′, R2 and R2′ are alkyl groups or perfluorinated alkyl groups; and RF is a perfluorinated alkyl group. The invention also provides LC compositions comprising one or more compounds of the invention with partially fluorinated silane tails. The invention also provides optical devices, particularly display devices which contain an aligned layer of an LC composition comprising one or more silane compounds of this invention.

    Abstract translation: 可用作具有部分氟化的硅烷末端基团的LC组合物的组分的手性非芳香性手性外消旋和非手性化合物。 硅烷尾组包括全氟烷基。 本发明的硅烷末端基团具有下式：其中k为0或1-10的整数; m和n是1至约20的整数; j为0或1〜20的整数; Z是-O-或单键; R 1，R 1，R 2和R 2'是烷基或全氟化烷基; 并且R F是全氟化的烷基。 本发明还提供了包含一种或多种本发明化合物与部分氟化硅烷尾料的LC组合物。 本发明还提供光学装置，特别是包含含有本发明的一种或多种硅烷化合物的LC组合物对准层的显示装置。

    Automated liquid crystal analysis instrument
    7.
    发明授权
    Automated liquid crystal analysis instrument 有权
    自动液晶分析仪

    公开(公告)号：US08106674B2

    公开(公告)日：2012-01-31

    申请号：US11930455

    申请日：2007-10-31

    Applicant: Michael Wand

    Inventor： Michael Wand

    IPC: G01R31/26

    CPC classification number: G01N27/041

    Abstract: Provided is a method for measuring one or more properties of liquid crystals in an automated manner. Also provided is a liquid crystal analysis instrument (LCAS) that automatically measures one or more properties of liquid crystals.

    Abstract translation: 提供了一种以自动化方式测量液晶的一种或多种性质的方法。 还提供了一种自动测量液晶的一个或多个特性的液晶分析仪（LCAS）。

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