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公开(公告)号：US06727968B1
公开(公告)日：2004-04-27
申请号：US09529159
申请日：2000-06-07
申请人： Guy Peter Bryan-Brown , Victor Chaklam Hui , John Clifford Jones , Ian Charles Sage , Emma Louise Wood
发明人： Guy Peter Bryan-Brown , Victor Chaklam Hui , John Clifford Jones , Ian Charles Sage , Emma Louise Wood
IPC分类号： G02F11337
CPC分类号： C09K19/56 , C09K19/0208 , G02F1/1337 , G02F1/133703 , G02F1/1391 , G02F1/1396 , G02F2001/13775
摘要： Liquid crystal devices are formed by a layer of a liquid crystal material enclosed between two cell walls, both carrying electrode structures, and one or both walls treated to align molecules of the liquid crystal material. Most alignment treatment give alignment and surface pretilt with a strong azimuthal and zenithal anchoring energy to contacting liquid crystal molecules. The invention reduces at least one of the azimuthal zenithal or translational anchoring energy to improve switching characteristics and optical performance by allowing movement of liquid crystal molecules at or close to the cell wall. The reduction of anchoring energy may be achieved by an oligomer or short chain polymer which is either spread on the surface or added to the liquid crystal material. The size of oligomer or short chain polymer is low enough that it does not appreciably phase separate from the liquid crystal material. The polymer layer has the characteristics of having imperfect solubility in the liquid crystal material used in the device, of having a physical affinity for the surface of the substrate, and of retaining a substantially liquid like surface at the polymer/liquid crystal interface. The polymer may be formed by polymerisation of reactive low molecular weight materials in solution in the liquid crystal fluid. The resulting solution or dispersion of polymer in liquid crystal is then filled into the cell, and the polymer is allowed to coat the substrate surfaces.
摘要翻译： 液晶装置由两层电池壁之间的液晶材料层构成，两层电池结构，以及被处理以使液晶材料分子对准的一个或两个壁。 大多数定向处理使得对准和表面预倾斜具有强的方位和天顶锚固能量以接触液晶分子。 本发明通过允许液晶分子在细胞壁处或附近移动来减少方位角天顶或平移锚定能中的至少一个，以改善开关特性和光学性能。 锚定能量的降低可以通过在表面上扩散或添加到液晶材料中的低聚物或短链聚合物来实现。 低聚物或短链聚合物的尺寸足够低，使其与液晶材料不相分离。 该聚合物层具有在该器件中使用的液晶材料中具有不完全的溶解性，对该基片的表面具有物理亲和性，并且在该聚合物/液晶界面处保持基本上液态的表面的特性。 可以通过在液晶流体的溶液中聚合反应性低分子量材料来形成聚合物。 然后将所得的聚合物在液晶中的溶液或分散体填充到电池中，并使聚合物涂覆在基材表面上。
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公开(公告)号：US20110104389A1
公开(公告)日：2011-05-05
申请号：US12736897
申请日：2009-05-19
CPC分类号： G02F1/13378 , B82Y10/00 , B82Y40/00 , G02F1/1391 , G02F2001/133761 , G02F2202/28 , G03F7/0002
摘要： The invention relates to a method of patterning a layer formed from a fixable material such as photopolymer on a surface in a desired pattern. The method involves coating selected areas of the substrate with an adhesion promoter and subsequently coating the fixable material. The fixable material is then fixed, for instance by curing by exposure to UV radiation. The adhesion promoter is adapted to have a surface energy which is designed to adhere to the substrate or selected areas thereof and also to the fixed material such that fixed material may be easily removed from areas of the substrate not coated with adhesion promoter but retained in areas where the adhesion promoter has bonded to the substrate.
摘要翻译： 本发明涉及一种在所需图案的表面上图案化由可固定材料如光聚合物形成的层的方法。 该方法包括用粘合促进剂涂覆基底的选定区域，随后涂覆可固定材料。 然后固定可固化材料，例如通过暴露于紫外线辐射固化。 粘合促进剂适于具有被设计成粘附到基底或其选定区域以及固定材料上的表面能，使得固定材料可以容易地从未涂覆有粘合促进剂的基底的区域移除，但保留在区域 其中粘合促进剂已经结合到基底上。
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3.发明授权Liquid crystal device exhibiting zernithal bistability and a cell wall for such a device 失效显示氮化硼双稳态的液晶装置和用于这种装置的电池壁公开(公告)号：US07280175B2
公开(公告)日：2007-10-09
申请号：US10775342
申请日：2004-02-11
IPC分类号： G02F1/1337
CPC分类号： G02F1/13378 , G02F1/139 , G02F1/1391 , G02F1/1392 , G02F1/1396 , G02F2001/133765
摘要： A bistable nematic liquid crystal device cell is provided with a surface alignment grating on at least one cell wall and a surface treatment on the other wall. Such treatment may be a homeotropic alignment or a planar alignment with or without an alignment direction, and zero or a non zero pretilt. The surface profile on the monograting is asymmetric with its groove height to width selected to give approximately equal energy within the nematic material in its two allowed alignment arrangements. The monograting may be formed by a photolithographic process or by embossing of a plastics material. The cell is switched by dc pulses coupling to a flexoelectric coefficient in the material, or by use of a two frequency addressing scheme and a suitable two frequency material. Polarisers either side of the cell distinguish between the two switched states. The cell walls may be rigid or flexible, and are coated with electrode structures, e.g. in row and column format giving an x,y matrix of addressable pixels on the cell.
摘要翻译： 双稳向列型液晶器件单元在至少一个单元壁上设置有表面对准光栅并在另一个壁上具有表面处理。 这种处理可以是垂直排列或具有或不具有取向方向的平面对准，以及零或非零预倾斜。 在单一研磨中的表面轮廓是不对称的，其槽高度被选择为在其两个允许的对准装置中在向列型材料内产生大致相等的能量。 单晶化可以通过光刻工艺或通过塑料材料的压花形成。 电池通过耦合到材料中的柔性电系数的直流脉冲或通过使用双频寻址方案和合适的两频率材料来切换。 电极的两侧的极化器区分两个切换状态。 细胞壁可以是刚性的或柔性的，并且涂覆有电极结构，例如， 以行和列格式给出单元格上的可寻址像素的x，y矩阵。
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公开(公告)号：US06456348B2
公开(公告)日：2002-09-24
申请号：US09740260
申请日：2000-12-20
IPC分类号： G02F11337
CPC分类号： G02F1/13378 , G02F1/139 , G02F1/1391 , G02F1/1392 , G02F1/1396 , G02F2001/133765
摘要： A bistable nematic liquid crystal device cell is provided with a surface alignment grating on at least one cell wall and a surface treatment on the other wall. Such treatment may be a homeotropic alignment or a planar alignment with or without an alignment direction, and zero or a non zero pretilt. The surface profile on the monograting is asymmetric with its groove height to width selected to give approximately equal energy within the nematic material in its two allowed alignment arrangements. The monograting may be formed by a photolithographic process or by embossing of a plastics material. The cell is switched by dc pulses coupling to a flexoelectric coefficient in the material, or by use of a two frequency addressing scheme and a suitable two frequency material. Polarisers either side of the cell distinguish between the two switched states. The cell walls may be rigid or flexible, and are coated with electrode structures, e.g. in row and column format giving an x,y matrix of addressable pixels on the cell.
摘要翻译： 双稳向列型液晶器件单元在至少一个单元壁上设置有表面对准光栅并在另一个壁上具有表面处理。 这种处理可以是垂直排列或具有或不具有取向方向的平面对准，以及零或非零预倾斜。 在单一研磨中的表面轮廓是不对称的，其槽高度被选择为在其两个允许的对准装置中在向列型材料内产生大致相等的能量。 单晶化可以通过光刻工艺或通过塑料材料的压花形成。 电池通过耦合到材料中的柔性电系数的直流脉冲或通过使用双频寻址方案和合适的两频率材料来切换。 电极的两侧的极化器区分两个切换状态。 细胞壁可以是刚性的或柔性的，并且涂覆有电极结构，例如， 以行和列格式给出单元格上的可寻址像素的x，y矩阵。
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公开(公告)号：US06249332B1
公开(公告)日：2001-06-19
申请号：US09043788
申请日：1998-03-30
IPC分类号： G02F11337
CPC分类号： G02F1/13378 , G02F1/139 , G02F1/1391 , G02F1/1392 , G02F1/1396 , G02F2001/133765
摘要： A bistable nematic liquid crystal device cell (1) is provided with a surface alignment grating on at least one cell wall (3) and a surface treatment on the other wall (4). Such treatment may be a homeotropic alignment or a planar alignment with or without an alignment direction, and zero or a non zero pretilt. The surface profile on the monograting is asymmetric with its grove height to width selected to give approximately equal energy within nematic material (2) in its two allowed alignment arrangements. The monograting may be formed by a photolithographic process or by embossing of a plastics material. The cell (1) is switched by dc pulses coupling to a flexoelectric coefficient in the material (2), or by use of a two frequency addressing scheme and a suitable two frequency material. Polarizers (13,13′) either side of the cell (1) distinguish between the two switched states. The cell walls (3,4) may be rigid or flexible, and are coated with electrode structures (6,7), e.g. in row and column format giving an x,y matrix of addressable pixels on the cell (1).
摘要翻译： 双稳向列型液晶器件单元（1）在至少一个单元壁（3）上设置有表面对准光栅，并在另一壁（4）上设置表面处理。 这种处理可以是垂直排列或具有或不具有取向方向的平面对准，以及零或非零预倾斜。 在单一研磨中的表面轮廓是不对称的，其格栅高度与宽度被选择以在其两个允许的对准布置中在向列相材料（2）内产生大致相等的能量。 单晶化可以通过光刻工艺或通过塑料材料的压花形成。 电池（1）通过耦合到材料（2）中的柔性电系数的直流脉冲或通过使用双频寻址方案和合适的两种频率材料来切换。 单元（1）的任一侧的偏振器（13,13'）区分两种切换状态。 细胞壁（3,4）可以是刚性的或柔性的，并且被电极结构（6,7）涂覆，例如， 以行和列格式给出单元（1）上的可寻址像素的x，y矩阵。
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公开(公告)号：US6075583A
公开(公告)日：2000-06-13
申请号：US793527
申请日：1997-02-27
IPC分类号： G02F1/1333 , C09K19/02 , C09K19/38 , C09K19/54 , G02F1/1334 , G02F1/137 , G02F1/141 , G02F1/133
CPC分类号： G02F1/141 , C09K19/0225 , C09K19/542 , G02F1/1334 , G02F2001/13775
摘要： In order to the effects of impact on liquid crystal devices a polymer network is introduced into ferroelectric liquid crystal cells. A liquid crystal device comprises two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, characterised in that the liquid crystal material contains a small amount of monomer. The liquid crystal material may also contain a photoinitiator. The monomer material may be cured to produce the polymer network; the curing may be carried out in the presence of an electric or magnetic field. Further, the monomer may be cured in an isotropic or liquid crystal phase.
摘要翻译： PCT No.PCT / GB95 / 02036 Sec。 371日期1997年2月27日 102（e）1997年2月27日PCT PCT 1995年8月30日PCT公布。 公开号WO96 / 07123 日期1996年3月7日为了对液晶装置的影响，将聚合物网络引入铁电液晶单元。 一种液晶装置包括两个间隔开的电池壁，每个电池壁都带有电极结构，并在至少一个面对表面上进行处理，该对置表面具有取向层，封闭在电池壁之间的层状液晶材料层，其特征在于液晶材料含有小的 单体量。 液晶材料也可以含有光引发剂。 单体材料可以固化以产生聚合物网络; 固化可以在电场或磁场的存在下进行。 此外，单体可以在各向同性或液晶相中固化。
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公开(公告)号：US09034429B2
公开(公告)日：2015-05-19
申请号：US12736897
申请日：2009-05-19
CPC分类号： G02F1/13378 , B82Y10/00 , B82Y40/00 , G02F1/1391 , G02F2001/133761 , G02F2202/28 , G03F7/0002
摘要： The invention relates to a method of patterning a layer formed from a fixable material such as photopolymer on a surface in a desired pattern. The method involves coating selected areas of the substrate with an adhesion promoter and subsequently coating the fixable material. The fixable material is then fixed, for instance by curing by exposure to UV radiation. The adhesion promoter is adapted to have a surface energy which is designed to adhere to the substrate or selected areas thereof and also to the fixed material such that fixed material may be easily removed from areas of the substrate not coated with adhesion promoter but retained in areas where the adhesion promoter has bonded to the substrate.
摘要翻译： 本发明涉及一种在所需图案的表面上图案化由可固定材料如光聚合物形成的层的方法。 该方法包括用粘合促进剂涂覆基底的选定区域，随后涂覆可固定材料。 然后固定可固化材料，例如通过暴露于紫外线辐射固化。 粘合促进剂适于具有被设计成粘附到基底或其选定区域以及固定材料上的表面能，使得固定材料可以容易地从未涂覆有粘合促进剂的基底的区域移除，但保留在区域 其中粘合促进剂已经结合到基底上。
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公开(公告)号：US06714273B2
公开(公告)日：2004-03-30
申请号：US10212141
申请日：2002-08-06
IPC分类号： G02F11337
CPC分类号： G02F1/13378 , G02F1/139 , G02F1/1391 , G02F1/1392 , G02F1/1396 , G02F2001/133765
摘要： A bistable nematic liquid crystal device cell is provided with a surface alignment grating on at least one cell wall and a surface treatment on the other wall. Such treatment may be a homeotropic alignment or a planar alignment with or without an alignment direction, and zero or a non zero pretilt. The surface profile on the monograting is asymmetric with its groove height to width selected to give approximately equal energy within the nematic material in its two allowed alignment arrangements. The monograting may be formed by a photolithographic process or by embossing of a plastics material. The cell is switched by dc pulses coupling to a flexoelectric coefficient in the material, or by use of a two frequency addressing scheme and a suitable two frequency material. Polarisers either side of the cell distinguish between the two switched states. The cell walls may be rigid or flexible, and are coated with electrode structures, e.g. in row and column format giving an x,y matrix of addressable pixels on the cell.
摘要翻译： 双稳向列型液晶器件单元在至少一个单元壁上设置有表面对准光栅并在另一个壁上具有表面处理。 这种处理可以是垂直排列或具有或不具有取向方向的平面对准，以及零或非零预倾斜。 在单一研磨中的表面轮廓是不对称的，其槽高度被选择为在其两个允许的对准装置中在向列型材料内产生大致相等的能量。 单晶化可以通过光刻工艺或通过塑料材料的压花形成。 电池通过耦合到材料中的柔性电系数的直流脉冲或通过使用双频寻址方案和合适的两频率材料来切换。 电极的两侧的极化器区分两个切换状态。 细胞壁可以是刚性的或柔性的，并且涂覆有电极结构，例如， 以行和列格式给出单元格上的可寻址像素的x，y矩阵。
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9.发明授权Ferroelectric liquid crystal device comprising a polymer and exhibiting a minimum in a response time verses voltage curve 有权铁电液晶装置包括聚合物并且在响应时间内呈现最小的电压曲线公开(公告)号：US06215543B1
公开(公告)日：2001-04-10
申请号：US09516192
申请日：2000-03-01
IPC分类号： G02F1133
CPC分类号： G02F1/141 , C09K19/0225 , C09K19/542 , G02F1/1334 , G02F2001/13775
摘要： In order to reduce the effects of impact on liquid crystal devices a polymer network is introduced into ferroelectric liquid crystal cells. A liquid crystal device comprises two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, characterised in that the liquid crystal material contains a small amount of monomer. The liquid crystal material may also contain a photoinitiator. The monomer material may be cured to produce the polymer networks the curing many be carried out in the presence of an electric or magnetic field. Further, the monomer may be cured in an isotropic or liquid crystal phase.
摘要翻译： 为了降低对液晶装置的影响，将聚合物网络引入铁电液晶单元。 一种液晶装置包括两个间隔开的电池壁，每个电池壁都带有电极结构，并在至少一个面对表面上进行处理，该对置表面具有取向层，封闭在电池壁之间的层状液晶材料层，其特征在于液晶材料含有小的 单体量。 液晶材料也可以含有光引发剂。 单体材料可以固化以产生聚合物网络，许多在电场或磁场存在下进行固化。 此外，单体可以在各向同性或液晶相中固化。
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公开(公告)号：US5754264A
公开(公告)日：1998-05-19
申请号：US687495
申请日：1996-08-06
IPC分类号： G02F1/1337 , G02F1/1339 , G02F1/141 , G02F1/13
CPC分类号： G02F1/13378 , G02F1/13394 , G02F1/141 , G02F1/1416 , G02F2001/133765
摘要： A ferroelectric liquid crystal device comprises a layer of a ferroelectric liquid crystal material contained between two cell walls carrying electrode structures and a surface alignment treatment. The surface alignment is provided by a profiled surface, e.g., a grating, on at least one cell wall. The grating may be a monograting or a bigrating, with a symmetric or asymmetric profile. Such a profiling enables surface tilt and alignment anchoring energy to be independently arranged to suit liquid crystal material and device type to give a required molecular arrangement and low device defect. The grating may be provided by interferography, photolithography, embossing, ruling, or carrier layer transfer. Alignment directions on the cell walls may be parallel or non-parallel. The surface tilt on both cell walls may be the same or different values. The cell walls may be relatively rigid, e.g., glass slides, or flexible, e.g., thin plastic which may have its inner face embossed to provide one or both a grating and a set of spacer pillars.
摘要翻译： PCT No.PCT / GB95 / 00178 Sec。 371日期：1996年8月6日 102（e）日期1996年8月6日PCT 1995年1月30日PCT PCT。 公开号WO95 / 22076 日期：1995年8月17日铁电液晶装置包括含有电极结构的两个电池壁和表面取向处理之间的铁电液晶材料层。 表面对准由至少一个细胞壁上的成型表面，例如光栅提供。 光栅可以是单一或者大的，具有对称或不对称的轮廓。 这种轮廓使得表面倾斜和对准锚固能量被独立地布置成适合液晶材料和器件类型，以产生所需的分子排列和低的器件缺陷。 光栅可以通过干涉，光刻，压纹，刻线或载体层转移来提供。 单元壁上的对准方向可以是平行的或不平行的。 两个细胞壁上的表面倾斜可以是相同或不同的值。 细胞壁可以是相对刚性的，例如玻璃片，或柔性例如薄塑料，其可以具有压花的内表面以提供光栅和一组间隔柱。
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