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    Liquid crystal display device
    2.
    发明授权
    Liquid crystal display device 有权
    液晶显示装置

    公开(公告)号：US06669865B1

    公开(公告)日：2003-12-30

    申请号：US09696282

    申请日：2000-10-26

    申请人： David Coates ,  Simon Greenfield ,  Mark Goulding ,  James Hanmer ,  Shirley Marden ,  Owain Llyr Parri

    发明人： David Coates ,  Simon Greenfield ,  Mark Goulding ,  James Hanmer ,  Shirley Marden ,  Owain Llyr Parri

    IPC分类号： C09K1938

    CPC分类号： C09K19/38 ,  C09K2219/03 ,  G02B5/3016 ,  G02F1/133528 ,  Y10T428/1041

    摘要： A liquid crystal display device containing a liquid crystal cell and at least one reflective polarizer or a polarizer combination having at least one reflective polarizer as a means to generate circular polarized light. The reflective polarizer includes an optically active layer of an anisotropic polymer material with a helically twisted planar molecular orientation. The material is oriented so that the axis of the molecular helix extends transversely to the layer, and the pitch of the molecular helix is varied in such a manner that the difference between the maximum pitch and the minimum pitch is at least 100 nm. The reflective polarizer is obtainable by copolymerization of a mixture of a chiral polymerizable mesogenic material including a) at least one achiral polymerizable mesogenic compound having at least one polymerizable functional group in the presence of b) at least one chiral polymerizable mesogenic compound having one polymerizable functional group and/or at least one non-polymerizable chiral mesogenic compound, c) an initiator, d) optionally a non-mesogenic compound having at least one polymerizable functional group, e) optionally a dye and, i) optionally a stabilizer. The invention also discloses methods of manufacturing such a reflective polarizer. The invention further discloses a mixture of a chiral polymerizable mesogenic material used for manufacturing such a reflective polarizer.

    摘要翻译： 一种液晶显示装置，其包含液晶单元和至少一个反射偏振器或具有至少一个反射偏振器的偏振器组合，作为产生圆偏振光的手段。 反射偏振器包括具有螺旋扭曲的平面分子取向的各向异性聚合物材料的光学活性层。 该材料被定向成使得分子螺旋线的轴线横向延伸，并且分子螺旋线的间距以最大间距和最小间距之差至少为100nm的方式变化。 反射型偏振片可通过手性可聚合介晶材料的混合物共聚获得，该混合物包括：a）至少一种具有至少一个可聚合官能团的非手性可聚合介晶化合物，其中b）至少一种具有一个可聚合官能团的手性可聚合介晶化合物 基团和/或至少一种不可聚合的手性介晶化合物，c）引发剂，d）任选的具有至少一个可聚合官能团的非介晶化合物，e）任选的染料和i）任选的稳定剂。 本发明还公开了制造这种反射偏振器的方法。 本发明还公开了用于制造这种反射偏振器的手性可聚合介晶材料的混合物。

    Macromolecular dispersion type liquid crystal display element and method of manufacturing the same
    4.
    发明授权
    Macromolecular dispersion type liquid crystal display element and method of manufacturing the same 失效
    高分子分散型液晶显示元件及其制造方法

    公开(公告)号：US06355315B1

    公开(公告)日：2002-03-12

    申请号：US09712845

    申请日：2000-11-15

    申请人： Hirofumi Kubota ,  Shinya Kosako ,  Kenji Nakao ,  Noriko Naito ,  Tsuyoshi Uemura ,  Masao Yamamoto

    发明人： Hirofumi Kubota ,  Shinya Kosako ,  Kenji Nakao ,  Noriko Naito ,  Tsuyoshi Uemura ,  Masao Yamamoto

    IPC分类号： C09K1938

    CPC分类号： C09K19/544 ,  C09K2019/546 ,  G02F1/1334 ,  Y10T428/10 ,  Y10T428/2984

    摘要： A method of forming a polymer dispersion type liquid crystal display element having a polymer dispersion type liquid crystal sandwiched between a pair of substrates, each having an inside electrode, is disclosed. The droplets either are dispersed and held in a continuous matrix phase of the polymer or held in a three dimensional network of a matrix containing the polymer. In the method, the value of (V90×R/d is at least 0.7 where V90 is that voltage required for transmittance of a voltage-transmittance characteristic of the display element to be 90% when the element is at 30° C., d is the interval between the substrate pair, and R is the average particle size of the liquid crystal droplets. In the method, a liquid crystal polymer precursor compatible solution containing a liquid crystal and a polymer precursor placed between the substrate pair is held at a temperature greater than the thermal phase separation temperature of the precursor solution, which is irradiated with ultraviolet to permit phase separation of the liquid crystal and the polymer precursor.

    摘要翻译： 公开了一种形成具有夹在一对基板之间的聚合物分散型液晶的聚合物分散型液晶显示元件的方法，每个基板具有内部电极。 液滴分散并保持在聚合物的连续基质相中或保持在含有聚合物的基质的三维网络中。 在该方法中，当V90为元素为30℃时的显示元件的电压 - 透光率特性的透射率的透过率所需的电压，V90xR / d为0.7以上，d为 衬底对之间的间隔，R是液晶微滴的平均粒径，在该方法中，将含有液晶的液晶聚合物前体相容溶液和位于衬底对之间的聚合物前体保持在大于 前体溶液的热相分离温度，其被紫外线照射以允许液晶和聚合物前体的相分离。

    Combination of optical elements
    7.
    发明授权
    Combination of optical elements 有权
    组合光学元件

    公开(公告)号：US06544605B1

    公开(公告)日：2003-04-08

    申请号：US09230335

    申请日：1999-01-25

    申请人： Mark Verrall ,  Jeremy Ward ,  James Hanmer ,  David Coates

    发明人： Mark Verrall ,  Jeremy Ward ,  James Hanmer ,  David Coates

    IPC分类号： C09K1938

    CPC分类号： G02F1/13363 ,  C09K19/38 ,  C09K2019/0448 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2001/133543 ,  G02F2001/133633 ,  G02F2413/02 ,  G02F2413/08 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/1041

    摘要： The invention relates to a combination of optical elements comprising at least one optical retardation film and at least one broadband reflective polarizer, characterized in that the optical retardation film is comprising at least one layer of an anisotropic polymer material having an optical symmetry axis substantially parallel to the plane of the layer, said optical retardation film being obtainable by polymerization of a mixture of a polymerizable mesogenic material comprising: a) at least one reactive mesogen having at least one polymerizable functional group; b) an initiator, c) optionally a non-mesogenic compound having two or more polymerizable functional groups; and d) optionally a stabilizer; and relates to an optical retardation film used in said combination of optical elements and to a liquid crystal display comprising said combination of optical elements.

    摘要翻译： 本发明涉及包括至少一个光学延迟膜和至少一个宽带反射偏振器的光学元件的组合，其特征在于光学延迟膜包括至少一层各向异性聚合物材料，其具有基本上平行于 所述光学延迟膜可通过可聚合介晶材料的混合物的聚合获得，所述混合物包含：a）至少一种具有至少一个可聚合官能团的反应性介晶; b）引发剂，c）任选具有两个或更多个可聚合官能团的非介晶化合物; 和d）任选的稳定剂; 涉及在所述光学元件的组合中使用的光学延迟膜和包括所述光学元件的组合的液晶显示器。

    Macromolecular dispersion type liquid crystal display element and method of manufacturing the same
    8.
    发明授权
    Macromolecular dispersion type liquid crystal display element and method of manufacturing the same 失效
    高分子分散型液晶显示元件及其制造方法

    公开(公告)号：US06355314B1

    公开(公告)日：2002-03-12

    申请号：US09712126

    申请日：2000-11-15

    申请人： Hirofumi Kubota ,  Shinya Kosako ,  Kenji Nakao ,  Noriko Naito ,  Tsuyoshi Uemura ,  Masao Yamamoto

    发明人： Hirofumi Kubota ,  Shinya Kosako ,  Kenji Nakao ,  Noriko Naito ,  Tsuyoshi Uemura ,  Masao Yamamoto

    IPC分类号： C09K1938

    CPC分类号： C09K19/544 ,  C09K2019/546 ,  G02F1/1334 ,  Y10T428/10 ,  Y10T428/2984

    摘要： A polymer dispersion type liquid crystal display element is disclosed. The element has a polymer dispersion type liquid crystal sandwiched between a pair of substrates, each having an inside electrode. Liquid crystal droplets are dispersed either in a polymer matrix continuous phase or in a three-dimensional matrix-containing polymer. When no voltage is applied to the electrodes, the liquid crystal molecules in the droplets present a bipolar-form orientation pattern having at least two poles in the vicinity of the interfaces between the liquid crystal droplets and the polymer. When a clear point transition temperature of the liquid crystal is Tni, the pattern of bipolar-form orientation is maintained at least when the element is operating at a temperature in the range of 5° C. to (Tni−5)° C.

    摘要翻译： 公开了一种聚合物分散型液晶显示元件。 该元件具有夹在一对基板之间的聚合物分散型液晶，每个基板具有内部电极。 液晶微滴分散在聚合物基质连续相或三维基质聚合物中。 当电极没有施加电压时，液滴中的液晶分子呈现在液晶小滴和聚合物之间的界面附近具有至少两个极点的双极型取向图案。 当液晶的清晰点转变温度为Tni时，至少当元件在5℃至（Tni-5）℃范围内的温度下操作时，至少保持双极型取向的图案。