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    Liquid crystal alignment structures and optical devices containing same
    42.
    发明授权
    Liquid crystal alignment structures and optical devices containing same 失效

    公开(公告)号：US06395354B1

    公开(公告)日：2002-05-28

    申请号：US09708752

    申请日：2000-11-08

    Applicant: Hassan Sahouani ,  Kim M. Vogel ,  Marc D. Radcliffe

    Inventor： Hassan Sahouani ,  Kim M. Vogel ,  Marc D. Radcliffe

    IPC: G02F11337

    CPC classification number: G02F1/133711 ,  G02F1/133528 ,  G02F2001/133726 ,  Y10T428/1005

    Abstract: An alignment structure useful in a liquid crystal display device comprising a substrate having disposed thereon an oriented film of a lyotropic nematic liquid crystalline material. Particularly useful lyotropic materials include a class of nematic liquid crystalline compounds known as chromonics. The substrates can be made by coating the lyotropic liquid crystal material onto the substrate to provide an oriented film of the lyotropic material. The alignment structure can also include one or more polarizing dyes or other additives and can thus be made to perform polarizing, retarding and/or color filtering functions in addition to alignment and orientation functions. Optical devices containing such alignment structures and methods of making such devices are also described.

    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds
    44.
    发明授权
    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds 失效
    控制锥形液晶化合物混合物锥角倾斜角的过程

    公开(公告)号：US5658491A

    公开(公告)日：1997-08-19

    申请号：US542179

    申请日：1995-10-12

    Applicant: John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    Inventor： John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    IPC: G02F1/13 ,  C07D239/26 ,  C07D239/34 ,  C09K19/04 ,  C09K19/34 ,  C09K19/06 ,  C09K19/12 ,  C09K19/32

    CPC classification number: C07D239/26 ,  C09K19/04 ,  C09K19/3458 ,  C09K19/3469

    Abstract: A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (i) an aliphatic fluorocarbon terminal portion comprising a terminal fluoroalkyl or fluoroether group and an alkylene group having at least two carbon atoms and containing at least one catenary ether oxygen atom, (ii) an aliphatic hydrocarbon terminal portion, and (iii) a central core connecting the terminal portions; and (b) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound; with the provisos that at least one of the compositions (a) and (b) comprises at least one chiral liquid crystal compound and that the combining of compositions (a) and (b) provides an optically active, tilted chiral smectic liquid crystal composition. The process enables control of cone tilt angle and thereby control of the brightness characteristics of liquid crystal display devices.

    Abstract translation: 用于控制倾斜的近晶液晶组合物的锥体倾斜角的方法包括将（a）至少一种液晶组合物组合的步骤，所述液晶组合物包含至少一种近晶或潜暗的近晶液晶化合物，所述液晶组合物包含（i）脂族碳氟化合物末端部分， 末端氟代烷基或氟代醚基和具有至少两个碳原子并含有至少一个链烯氧原子的亚烷基，（ii）脂肪族烃末端部分和（iii）连接末端部分的中心核心; 和（b）至少一种液晶组合物，其包含至少一种近晶或潜层间的近晶液晶化合物; 条件是组合物（a）和（b）中的至少一种包含至少一种手性液晶化合物，并且组合物（a）和（b）的组合提供光学活性的倾斜手性近晶液晶组合物。 该过程能够控制锥形倾斜角度，从而控制液晶显示装置的亮度特性。

    Optical bodies containing cholesteric liquid crystal material and methods of manufacture
    49.
    发明授权
    Optical bodies containing cholesteric liquid crystal material and methods of manufacture 有权
    含有胆固醇液晶材料的光学体及其制造方法

    公开(公告)号：US07277141B2

    公开(公告)日：2007-10-02

    申请号：US11141578

    申请日：2005-05-31

    Applicant: Richard J. Pokorny ,  Marc D. Radcliffe ,  Philip E. Watson ,  Christopher C. Bowley ,  Ikuko Ebihara

    Inventor： Richard J. Pokorny ,  Marc D. Radcliffe ,  Philip E. Watson ,  Christopher C. Bowley ,  Ikuko Ebihara

    IPC: G02F1/1335 ,  G09K19/02 ,  G02B5/30

    CPC classification number: G02B5/3016

    Abstract: An optical body includes a substrate and a cholesteric liquid crystal layer disposed on the substrate. The cholesteric liquid crystal layer has a non-uniform pitch along a thickness direction of the layer and comprises a crosslinked polymer material that substantially fixes the cholesteric liquid crystal layer. The crosslinking hinders diffusion of cholesteric liquid crystal material within the cholesteric liquid crystal layer. In other methods of making an optical body, a reservoir of chiral material is provided during the process over a first cholesteric liquid crystal layer to diffuse into the layer and provide a non-uniform pitch. Alternatively, two coating compositions can be disposed on a substrate where the material of the first coating composition is not substantially soluble in the second coating composition.

    Abstract translation: 光学体包括衬底和设置在衬底上的胆甾型液晶层。 胆甾型液晶层沿着该层的厚度方向具有不均匀的间距，并且包括基本上固定胆甾醇型液晶层的交联聚合物材料。 交联阻碍胆甾型液晶材料在胆甾型液晶层内的扩散。 在制造光学体的其它方法中，在第一胆甾醇型液晶层的过程中提供手性材料的储存器以扩散到该层中并提供不均匀的间距。 或者，两个涂料组合物可以设置在基材上，其中第一涂料组合物的材料基本上不溶于第二涂料组合物。

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