公开(公告)号：US20130135568A1

公开(公告)日：2013-05-30

申请号：US13704826

申请日：2011-06-08

Applicant: David Coates ,  Tony Orlando Alkins

Inventor： David Coates ,  Tony Orlando Alkins

IPC: G02F1/1335

CPC classification number: G02F1/133553 ,  G02F1/133504 ,  G02F1/133514 ,  G02F1/13718 ,  G02F2001/133567

Abstract: A cholesteric liquid crystal display device (10) comprises a layer of cholesteric liquid crystal material (11) supported by at least one substrate (13; electrode layers (14,15) on opposite sides of the layer of cholesteric liquid crystal material (11); and a light absorptive or reflective layer (17) on the rear side of the layer of cholesteric liquid crystal material (11). To provide non-uniform reflection of light, there is a layer (18) of reflective flakes (19) on the front side of the light absorptive or reflective layer (17), or the reflective layer is shaped to be non-planar.

Abstract translation: 胆甾型液晶显示装置（10）包括由胆甾型液晶材料层（11）的相对侧上的至少一个基板（13;电极层（14,15））支撑的胆甾醇型液晶材料层（11） ;以及在胆甾型液晶材料层（11）的背面的光吸收或反射层（17），为了提供不均匀的光反射，在反射片（19）上有一个层（18） 光吸收或反射层（17）的前侧或反射层被成形为非平面的。

公开(公告)号：US20090161034A1

公开(公告)日：2009-06-25

申请号：US11629095

申请日：2005-06-14

Applicant: David Coates ,  Amir Ben Shalom ,  Shlomit Angel-Devir ,  Christopher John Hughes

Inventor： David Coates ,  Amir Ben Shalom ,  Shlomit Angel-Devir ,  Christopher John Hughes

IPC: G02F1/137

CPC classification number: G09G3/3629 ,  G02F1/13718 ,  G09G2300/0486 ,  G09G2310/065

Abstract: In a cholesteric liquid crystal display device (24), to drive a surface-stabilized layer of cholesteric liquid crystal material into the focal conic state, there is applied drive signal comprising a series of pulses (30, 34, 35, 36, 37, 38, 41). At least one initial pulse has sufficient energy to drive the layer of cholesteric liquid crystal material into the homeotropic state and the subsequent pulses have time-averaged energies which reduce to a minimum level at which the layer of cholesteric liquid crystal material is driven into the focal conic state. This produces a focal conic state of particularly low reflectance, which allows a high contrast ratio to be achieved.

Abstract translation: 在胆甾醇型液晶显示装置（24）中，为了将胆甾醇型液晶材料的表面稳定层驱动到聚焦圆锥状态，施加驱动信号，该驱动信号包括一系列脉冲（30,34,35,36,37， 38，41）。 至少一个初始脉冲具有足够的能量以将胆甾型液晶材料层驱动到垂直状态，并且随后的脉冲具有时间平均的能量，这些能量降低到胆甾型液晶材料层被驱动到焦点中的最小水平 圆锥状态。 这产生特别低反射率的焦点锥形状态，这允许实现高对比度。

公开(公告)号：US20080198173A1

公开(公告)日：2008-08-21

申请号：US12030891

申请日：2008-02-14

Applicant: David COATES ,  Christopher John Hughes

Inventor： David COATES ,  Christopher John Hughes

IPC: G09G3/36 ,  G09G5/00

CPC classification number: G09G3/18 ,  G09G3/2044 ,  G09G3/2059 ,  G09G3/3629 ,  G09G2300/0486 ,  G09G2310/0283 ,  G09G2310/061 ,  G09G2310/065 ,  G09G2320/041

Abstract: A cholesteric liquid crystal display apparatus is driven in accordance with image data having a predetermined number of possible grey levels. Drive signals are applied to the electrodes of the at least one cell which drive each pixel of the display apparatus into a state selected from a number of predetermined states in accordance with the image data. A number of predetermined states less than the predetermined number of possible grey levels of the image data is used but the image data is error diffusion dithered so that the spatial filtering performed by the eye of the viewer compensates for the low number of states used. By using such a low number of states, there are achieved several advantages in the design of the drive circuit which increase its simplicity and reduce cost.

Abstract translation: 胆甾型液晶显示装置根据具有预定数量的可能的灰度级的图像数据被驱动。 驱动信号被施加到根据图像数据将显示装置的每个像素驱动到从多个预定状态中选出的状态的至少一个单元的电极。 使用小于图像数据的预定数量的可能的灰度级的多个预定状态，但是图像数据是错误扩散抖动，使得由观看者进行的空间滤波补偿所使用的低数量的状态。 通过使用这种低数量的状态，在驱动电路的设计中实现了几个优点，其增加了其简单性并降低了成本。

公开(公告)号：US07250199B2

公开(公告)日：2007-07-31

申请号：US11038170

申请日：2005-01-21

Applicant: Andreas Wachtler ,  Reinhard Hittich ,  Eike Poetsch ,  Herbert Plach ,  David Coates ,  Bernhard Rieger ,  Joachim Krause

Inventor： Andreas Wachtler ,  Reinhard Hittich ,  Eike Poetsch ,  Herbert Plach ,  David Coates ,  Bernhard Rieger ,  Joachim Krause

IPC: C09K19/30 ,  C09K19/12 ,  C07C25/24

CPC classification number: C07C17/2635 ,  C07C22/08 ,  C07C25/24 ,  C07C25/28 ,  C07C43/225 ,  C07C255/50 ,  C07C2601/14 ,  C09K19/3003 ,  C09K2019/0444 ,  Y10T428/10

Abstract: Novel phenylcyclohexanes of the formula I in which n is 0 to 7, Q1 and Q2 are H, or one of these radicals is alternatively CH3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, —CF3, —CN, —OCF3 or —OCHF2, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q1=Q2=H and simultaneously X=CN, Y and/or Z are F.

Abstract translation: 其中n为0至7，Q 1和Q 2的式I的新型苯基环己烷为H，或这些基团中的一个为CH 3， 其中，R为0,1,2,3,4或5，A为反式-1,4-亚环己基，1,4-亚苯基，3-氟-1,4-亚苯基或单键，X为F ，Cl，-CF 3，-CN，-OCF 3或-OCHF 2，Y和Z各自独立地为 ，H或F，条件是在A为单键的情况下，Q 1 = Q 2 = H，同时X = CN，Y和/ 或Z是F.

公开(公告)号：US07125500B2

公开(公告)日：2006-10-24

申请号：US11059551

申请日：2005-02-17

Applicant: Louise Farrand ,  David Coates

Inventor： Louise Farrand ,  David Coates

IPC: C09K19/38 ,  C09K19/20 ,  C09K19/12 ,  C09K19/30 ,  C09K19/52

CPC classification number: C09K19/0403 ,  C09K19/322 ,  C09K19/3405 ,  C09K19/38 ,  C09K19/42 ,  C09K19/586 ,  C09K2019/0444 ,  C09K2019/0448 ,  C09K2019/3095 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1036 ,  Y10T428/1041 ,  Y10T428/1059

Abstract: The invention relates to multireactive polymerizable mesogenic compounds of formula I R1—MG—R2 I wherein R1, R2 and MG have the meaning given in claim 1, to a polymerizable mesogenic composition comprising at least two components, at least one which is a compound of formula I, to a linear or crosslinked polymer obtainable by polymerization of one or more compounds of formula I or of a polymerizable composition comprising one or more compounds of formula I and to the use of a compound of formula I, or a polymerizable composition or polymer obtainable thereof, in optical elements such as polarizers, optical retardation or compensation films, alignment layers, colour filters or holographic elements, in liquid crystal displays such as PDLC, polymer gel or polymer stabilized cholesteric texture (PSCT) displays, in adhesives, synthetic resins with anisotropic mechanical properties, cosmetics, diagnostics or liquid crystal pigments, for decorative and security applications, and for nonlinear optics or optical information storage.

Abstract translation: 本发明涉及式I的多官能可聚合介晶化合物<？in-line-formula description =“In-line Formulas”end =“lead”？> R 1 -MG-R 2 其中R 1，R 2，和M 2具有在线公式描述=“In-line formula”end =“tail” 权利要求1中给出的含义涉及一种可聚合的介晶组合物，其包含至少两种组分，至少一种是式I化合物，其可通过一种或多种式I化合物的聚合或可聚合的 组合物，其包含一种或多种式I化合物，以及在光学元件如偏振器，光学延迟或补偿膜，取向层，滤色器或全息元件中使用式I化合物或其可获得的可聚合组合物或聚合物 在诸如PDLC，聚合物凝胶或聚合物稳定的胆甾醇结构（PSCT）显示器的液晶显示器中，在粘合剂中， 具有各向异性力学性能的合成树脂，化妆品，诊断或液晶颜料，用于装饰和安全应用，以及非线性光学或光学信息存储。

公开(公告)号：US07105209B2

公开(公告)日：2006-09-12

申请号：US10432682

申请日：2001-11-22

Applicant: Michael Heckmeier ,  Melanie Klasen-Memmer ,  Georg Lüssem ,  Kazuaki Tarumi ,  David Coates ,  Owain Llyr Parri ,  Mark Verrall ,  Mark John Goulding ,  Stephen Christopher Kitson

Inventor： Michael Heckmeier ,  Melanie Klasen-Memmer ,  Georg Lüssem ,  Kazuaki Tarumi ,  David Coates ,  Owain Llyr Parri ,  Mark Verrall ,  Mark John Goulding ,  Stephen Christopher Kitson

IPC: C09K19/52 ,  G02F1/1337

CPC classification number: G02F1/133711 ,  G02F1/1391 ,  G02F1/1393 ,  G02F2001/133715 ,  G02F2001/133726 ,  G02F2001/133742 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1036

Abstract: The invention relates to an alignment layer comprising a polymerized liquid crystal material with homeotrophic orientation, to methods of its preparation, to polymerizable liquid crystal compositions and liquid crystal polymers used for the preparation of the alignment layer, to liquid crystal devices comprising the alignment layer, and to a method of controlling the electrooptical steepness of a liquid crystal display comprising at least one alignment layer by varying the surface anchoring energy of the alignment layer.

Abstract translation: 本发明涉及一种包括具有同位素取向的聚合液晶材料的取向层，其制备方法，用于制备取向层的聚合性液晶组合物和液晶聚合物，包括取向层的液晶装置， 以及通过改变对准层的表面锚定能量来控制包括至少一个取向层的液晶显示器的电光陡度的方法。

公开(公告)号：US20060182898A1

公开(公告)日：2006-08-17

申请号：US11335844

申请日：2006-01-20

Applicant: Amir Ben-Shalom ,  David Coates

Inventor： Amir Ben-Shalom ,  David Coates

IPC: G02F1/1333 ,  C09K19/02

CPC classification number: G02F1/13718 ,  Y10T428/10 ,  Y10T428/1036

Abstract: A display apparatus includes a cholesteric liquid crystal display device comprising a layer of cholesteric liquid crystal material contained between two substrates, each substrate carrying an electrode layer so that the layer of cholesteric liquid crystal material is interposed between the electrode layers. A piezoelectric element is electrically connected to the electrode layers of the cholesteric liquid crystal display device. The piezoelectric element is capable of being manually activated to generate a drive signal which is sufficient to switch the layer of cholesteric liquid crystal material from the planar state to the focal conic state. The substrates are arranged to allow the layer of cholesteric liquid crystal material to be sheared to switch the layer of cholesteric liquid crystal material from the focal conic state to the planar state by manual compression of the cholesteric liquid crystal display device. Thus the display device can be switched without the need for a battery or other power source.

Abstract translation: 显示装置包括胆甾醇型液晶显示装置，其包括在两个基板之间包含的胆甾型液晶材料层，每个基板承载电极层，使得胆甾醇型液晶材料层插入在电极层之间。 压电元件电连接到胆甾型液晶显示装置的电极层。 压电元件能够被手动激活以产生足以将胆甾醇型液晶材料层从平面状态切换到焦点锥形状态的驱动信号。 基板被布置成允许胆甾型液晶材料层被剪切，以通过胆甾型液晶显示装置的手动压缩将胆甾型液晶材料层从焦点锥形状态切换到平面状态。 因此，可以切换显示装置而无需电池或其他电源。

公开(公告)号：US20060007090A1

公开(公告)日：2006-01-12

申请号：US10529377

申请日：2003-09-30

Applicant: Amir Ben-Shalom ,  David Coates

Inventor： Amir Ben-Shalom ,  David Coates

IPC: G09G3/36

CPC classification number: G02F1/13718 ,  G02F2001/13478 ,  G09G3/3607 ,  G09G3/3629 ,  G09G2300/0486 ,  G09G2310/06

Abstract: A distinct color LCD apparatus including at least two layers of respectively disparate encapsulated liquid crystal materials; Structural means for maintaining said layers proximate to each other and in a substantially parallel orientation; Electrically conductive means for addressing at least one substantially parallel address across the encapsulated liquid crystal material in each of the respective layers; and Coordinated with said means for addressing, an electrical pulse driving means (I) wherein a state is selected from the list Homeouopre and planar and (U) whereby said state is communicated to a predetermined address between one of said parallel layers.

Abstract translation: 一种独特的彩色液晶显示装置，包括至少两层分别不同的封装液晶材料; 用于将所述层保持彼此靠近并且基本上平行取向的结构装置; 导电装置，用于在每个相应层中的封装液晶材料之间寻址至少一个基本上平行的地址; 并且与所述寻址装置协调，电脉冲驱动装置（I），其中从所述列表中选择状态，并且平面和（U），从而所述状态被传送到所述并行层之一之间的预定地址。

公开(公告)号：US20050128395A1

公开(公告)日：2005-06-16

申请号：US10924910

申请日：2004-08-25

Applicant: David Coates ,  Owain Parri ,  Jeremy Ward ,  David Joicey ,  Keith Wilbourn ,  Colum Dickson ,  John Scott

Inventor： David Coates ,  Owain Parri ,  Jeremy Ward ,  David Joicey ,  Keith Wilbourn ,  Colum Dickson ,  John Scott

IPC: G02F1/1337

CPC classification number: G02F1/133719 ,  G02F2001/133715 ,  G02F2001/133742

Abstract: Homeotropically oriented layers and films of liquid crystals especially on polymeric substrates. The layers and films, which also can be multi-layered films comprising a homeotropically aligned anisotropic film are preparable by application of an orientation layer to the substrate. The orientation layer can be either an organic surfactant which is fixed in a matrix of a polymeric material or an inorganic thin layer such as aluminum or Al2O3.

Abstract translation: 液晶的垂直取向层和膜，特别是在聚合物基材上。 也可以是包括垂直取向的各向异性膜的多层膜的层和膜可以通过向基板施加取向层来制备。 取向层可以是固定在聚合物材料或无机薄层如铝或Al 2 O 3 3的基体中的有机表面活性剂。

公开(公告)号：US06677042B2

公开(公告)日：2004-01-13

申请号：US09954013

申请日：2001-09-18

Applicant: Matthias Kuntz ,  David Coates ,  Simon Greenfield ,  John Patrick

Inventor： Matthias Kuntz ,  David Coates ,  Simon Greenfield ,  John Patrick

IPC: B32B1502

CPC classification number: C09D11/50 ,  C09D7/65 ,  C09D7/68 ,  C09D7/69 ,  C09K19/00 ,  C09K19/38 ,  G02B5/3016 ,  Y10S428/916 ,  Y10T428/249921 ,  Y10T428/2982

Abstract: The invention relates to polymer beads comprising an anisotropic polymer material with helically twisted structure, to their use in reflective films, spraying or printing inks or as pigments, for optical or electrooptical, decorative or security applications, to a reflective film comprising one or more polymer beads in a transmissive binder, and to a security marking or security device comprising one or more polymer beads or comprising a reflective film.