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    Liquid crystal display device
    1.
    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。

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

    公开(公告)号：US06217955B1

    公开(公告)日：2001-04-17

    申请号：US09117710

    申请日：1998-08-04

    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, f) 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f）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。

    Electrooptical liquid crystal system
    4.
    发明授权
    Electrooptical liquid crystal system 有权
    电光液晶系统

    公开(公告)号：US06187222B1

    公开(公告)日：2001-02-13

    申请号：US09506815

    申请日：2000-02-18

    申请人： David Coates ,  Owain Llyr Parri ,  Simon Greenfield ,  Martin David Tillin ,  Mark John Goulding ,  Patrick Nolan

    发明人： David Coates ,  Owain Llyr Parri ,  Simon Greenfield ,  Martin David Tillin ,  Mark John Goulding ,  Patrick Nolan

    IPC分类号： C09K1934

    CPC分类号： C09K19/3469 ,  C09K19/12 ,  C09K19/14 ,  C09K19/2007 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/38 ,  C09K19/544 ,  C09K2019/0448 ,  C09K2019/0481 ,  Y10T428/10 ,  Y10T428/1077

    摘要： An electroptical system which between 2 electrode layers contains a PDLC film comprising a liquid crystal mixture forming micro-droplets in an optically isotropic, transparent polymer matrix, in which one of the refractive indices of the liquid crystal mixture is matched to the refractive index of the polymer matrix, which exhibits an electrically switchable transparency essentially independent of the polarization of the incident light, the precursor of the PDLC film of which comprises one or more monomers, oligomers and/or prepolymers and a photoinitiator, and is cured photoradically, the liquid crystal mixture of which comprises one or more compounds of the formula I in which the substituents are defined herein characterized in that the liquid crystal mixture additionally contains one or more reactive liquid crystalline compounds in order to obtain improved switching times especially at low temperatures.

    摘要翻译： 在2个电极层之间的光学系统包含PDLC膜，其包含在光学各向同性的透明聚合物基质中形成微滴的液晶混合物，其中液晶混合物的折射率之一与聚合物的折射率相匹配 基质，其表现出基本上与入射光的极化无关的电可切换透明体，其PDLC膜的前体包含一种或多种单体，低聚物和/或预聚物和光引发剂，并且在光电偶存下固化，液晶混合物 其包含一种或多种式Iin的化合物，其取代基在本文中定义，其特征在于液晶混合物另外含有一种或多种反应性液晶化合物，以便获得改进的切换时间，特别是在低温下。

    Electrooptical liquid crystal system
    7.
    发明授权
    Electrooptical liquid crystal system 失效
    电光液晶系统

    公开(公告)号：US06565769B2

    公开(公告)日：2003-05-20

    申请号：US09750102

    申请日：2000-12-29

    申请人： David Coates ,  Owain Llyr Parri ,  Simon Greenfield ,  Martin David Tillin ,  Mark John Goulding ,  Patrick Nolan

    发明人： David Coates ,  Owain Llyr Parri ,  Simon Greenfield ,  Martin David Tillin ,  Mark John Goulding ,  Patrick Nolan

    IPC分类号： C09K1912

    CPC分类号： C09K19/3469 ,  C09K19/12 ,  C09K19/14 ,  C09K19/2007 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/38 ,  C09K19/544 ,  C09K2019/0448 ,  C09K2019/0481 ,  Y10T428/10 ,  Y10T428/1077

    摘要： To improve switching times, especially at low temperatures, one or more reactive liquid crystalline compounds is added to a liquid crystal mixture used in an electrooptical system. The electrooptical system comprises a PDLC film comprising a liquid crystal mixture forming micro- droplets in an optically isotropic, transparent polymer matrix between 2 electrode layers, one of the refractive indices of the liquid crystal mixture is matched to the refractive index of the polymer matrix, the PDLC film exhibits an electrically switching transparency essentially independent of the polarization of the incident light, the precursor of the PDLC film comprises one or more monomers, oligomers and/or prepolymers and a photoinitiator, and is cured photoradically, the liquid crystal mixture comprises one or more compounds of the formula I  wherein R, A1, A2, Z1, Z2, X1, X2, Q, Y and n are as defined herein.

    摘要翻译： 为了改善切换时间，特别是在低温下，将一种或多种反应性液晶化合物加入到用于电光学系统的液晶混合物中。 电光系统包括PDLC膜，其包含在2个电极层之间的光学各向同性的透明聚合物基质中形成微滴的液晶混合物，液晶混合物的折射率之一与聚合物基质的折射率相匹配， PDLC膜表现出基本上与入射光的极化无关的电切换透明体，PDLC膜的前体包含一种或多种单体，低聚物和/或预聚物以及光引发剂，并且在光电偶联下固化，液晶混合物包含一种或多种 更多的式I化合物，其中R，A1，A2，Z1，Z2，X1，X2，Q，Y和n如本文所定义。