公开(公告)号：US20090161034A1

公开(公告)日：2009-06-25

申请号：US11629095

申请日：2005-06-14

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

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

IPC分类号： G02F1/137

CPC分类号： G09G3/3629 ,  G02F1/13718 ,  G09G2300/0486 ,  G09G2310/065

摘要： 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.

摘要翻译： 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：US20130329166A1

公开(公告)日：2013-12-12

申请号：US13884656

申请日：2011-11-02

申请人： Assaf Poliakine ,  Amir Ben-Shalom ,  Christopher John Hughes ,  David Coates

发明人： Assaf Poliakine ,  Amir Ben-Shalom ,  Christopher John Hughes ,  David Coates

IPC分类号： G02F1/01 ,  G02F1/13

CPC分类号： G02F1/0102 ,  B44C5/04 ,  B44F1/04 ,  B44F1/08 ,  G02F1/1313 ,  G02F1/1333 ,  G02F1/1334 ,  G02F1/13718 ,  G02F2001/133302

摘要： A decorative panel (1) comprises a transparent front substrate (2) having a foreground image printed thereon, the foreground image having varying transparency across its area. Behind the foreground image, is at least one layer (3) of optically reflective or absorptive material which has a reflectance or absorptance that is changeable in response to an external stimulus and which transmits incident light that is not reflected or absorbed. Behind the at least on layer of reflective material, is a background layer (4) on which light transmitted by the at least one layer of optically reflective or absorptive material is incident and which is not transparent.

摘要翻译： 装饰板（1）包括其上印有前景图像的透明前基板（2），其前景图像在其区域上具有不同的透明度。 在前景图像之后，是光反射或吸收材料的至少一层（3），其具有响应于外部刺激而变化并且透射未被反射或吸收的入射光的反射率或吸收率。 在至少在反射材料层之后的背景层（4）上由至少一层光学反射或吸收材料透射的光入射到其上并且不透明的背景层（4）。

公开(公告)号：US20080165097A1

公开(公告)日：2008-07-10

申请号：US11667481

申请日：2005-11-07

申请人： David Coates ,  Amir Ben Shalom ,  Shlomir Engle Dvir

发明人： David Coates ,  Amir Ben Shalom ,  Shlomir Engle Dvir

IPC分类号： G09G3/36

CPC分类号： G09G3/3648 ,  G02F2001/134318 ,  G09G2300/023 ,  G09G2300/0426 ,  G09G2300/0439 ,  G09G2310/02

摘要： A liquid crystal display device includes at least one cell which provides a rectangular array of addressable pixels having an average area of at least 4 mm2. The cell comprises: two substrates (11, 12) defining therebetween a cavity; a layer of liquid crystal material in the cavity; and a respective conductive layer (13, 14) formed on each of the substrates (11, 12). The conductive layers (13, 14) are patterned to provide a rectangular array of separate drive electrodes (51) each capable of driving an area of the layer of liquid crystal material adjacent the respective drive electrode as one of said pixels. The conductive layers (13, 14) also provide a separate track (33) connected to each of the separate drive electrodes (51) and extending to a position outside the array of addressable pixels where the tracks (33) form terminals (34) each capable of receiving a respective drive signal. This allows direct addressing of the pixels. The relatively large size of the pixels allows such direct drive without an unacceptable reduction in the contrast ratio. In addition, the conductive layers may be patterned in a variety of ways to further improve the contrast ratio, e.g. the second conductive layer (14) is patterned to provide a common electrode (72) and a plurality of separate counter electrodes (76). Each respective counter electrode (76) extends over an area opposite one of the gaps (35) between the lines of the electrodes (51).

摘要翻译： 液晶显示装置包括至少一个单元，其提供具有至少4mm 2的平均面积的可寻址像素的矩形阵列。 电池包括：在其间限定空腔的两个基板（11,12） 空腔中的一层液晶材料; 以及形成在每个基板（11,12）上的相应的导电层（13,14）。 对导电层（13,14）进行构图以提供单独的驱动电极（51）的矩形阵列，每个驱动电极能够驱动邻近各个驱动电极的液晶材料层的区域作为所述像素之一。 导电层（13,14）还提供连接到每个分离的驱动电极（51）并且延伸到可寻址像素阵列之外的位置的单独轨道（33），其中轨道（33）各自形成终端（34） 能够接收相应的驱动信号。 这允许直接寻址像素。 相对较大尺寸的像素允许这种直接驱动，而不会使对比度降低。 此外，导电层可以以各种方式图案化以进一步提高对比度，例如， 图案化第二导电层（14）以提供公共电极（72）和多个单独的对置电极（76）。 每个相应的电极（76）在与电极（51）的线之间的间隙（35）相对的区域上延伸。

公开(公告)号：US20060182898A1

公开(公告)日：2006-08-17

申请号：US11335844

申请日：2006-01-20

申请人： Amir Ben-Shalom ,  David Coates

发明人： Amir Ben-Shalom ,  David Coates

IPC分类号： G02F1/1333 ,  C09K19/02

CPC分类号： G02F1/13718 ,  Y10T428/10 ,  Y10T428/1036

摘要： 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.

摘要翻译： 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

申请人： Amir Ben-Shalom ,  David Coates

发明人： Amir Ben-Shalom ,  David Coates

IPC分类号： G09G3/36

CPC分类号： G02F1/13718 ,  G02F2001/13478 ,  G09G3/3607 ,  G09G3/3629 ,  G09G2300/0486 ,  G09G2310/06

摘要： 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.

摘要翻译： 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：US08013819B2

公开(公告)日：2011-09-06

申请号：US11798184

申请日：2007-05-10

申请人： Amir Ben-Shalom ,  Lahav Langboim ,  Ilan Feldman ,  David Coates

发明人： Amir Ben-Shalom ,  Lahav Langboim ,  Ilan Feldman ,  David Coates

IPC分类号： G09G3/36

CPC分类号： G09G3/3629 ,  G09G3/2014 ,  G09G3/2077 ,  G09G2300/0486 ,  G09G2330/021

摘要： A cholesteric liquid crystal display device comprises three cells each comprising a layer of cholesteric liquid crystal material and an electrode arrangement capable of providing independent driving of a plurality of pixels across the layer of cholesteric liquid crystal material by respective drive signals. A drive circuit applies a respective drive signal to each pixel to drive the pixel into states which are variable to provide a reflectance varying within a predetermined range of reflectances. The drive signals involve a combination of two drive schemes to provide reflectances in different portions of the range. In particular, (a) when providing a reflectance in a first portion of higher reflectance, the drive signals comprise a first waveform shaped to drive the pixel into a stable state, the waveform having a shape which is variable to provide a stable state having a varying reflectance; and (b) when providing a reflectance in a second portion of lower reflectance, the drive signals comprise a second waveform shaped to drive the pixel into the homeotropic state and the planar state alternately, the periods of time during which the pixel is driven into the homeotropic and planar states being variable to provide a varying average reflectance as perceived by a viewer. Such a combination of drive schemes allows a good contrast ratio and color gamut to be achieved because of the use of the homeotropic state but only increases the power consumption by a relatively small amount as the homeotropic state is only used for a portion of the pixels.

摘要翻译： 胆甾醇型液晶显示装置包括三个单元，每个单元包括胆甾型液晶材料层和能够通过相应的驱动信号提供穿过胆甾型液晶材料层的多个像素的独立驱动的电极装置。 驱动电路将相应的驱动信号施加到每个像素以将像素驱动到可变的状态，以提供在预定反射范围内变化的反射率。 驱动信号涉及两个驱动方案的组合，以在该范围的不同部分提供反射。 特别地，（a）当在较高反射率的第一部分中提供反射率时，驱动信号包括成形为将像素驱动到稳定状态的第一波形，该波形具有可变的形状，以提供具有 变化反射率; 和（b）当在较低反射率的第二部分中提供反射率时，驱动信号包括形状为将像素驱动成垂直状态和平面状态的第二波形，其中像素被驱动到 垂直和平面状态是可变的，以提供观察者感觉到的变化的平均反射率。 驱动方案的这种组合允许由于使用垂直状态而实现良好的对比度和色域，而仅仅将像素的一部分使用垂直状态，而仅增加功率消耗相对较小的量。

公开(公告)号：US07719501B2

公开(公告)日：2010-05-18

申请号：US10529377

申请日：2003-09-30

申请人： Amir Ben-Shalom ,  David Coates

发明人： Amir Ben-Shalom ,  David Coates

IPC分类号： G09G3/36

CPC分类号： G02F1/13718 ,  G02F2001/13478 ,  G09G3/3607 ,  G09G3/3629 ,  G09G2300/0486 ,  G09G2310/06

摘要： 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.

摘要翻译： 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：US20080042959A1

公开(公告)日：2008-02-21

申请号：US11798184

申请日：2007-05-10

申请人： Amir Ben-Shalom ,  Lahav Langboim ,  Ilan Feldman ,  David Coates

发明人： Amir Ben-Shalom ,  Lahav Langboim ,  Ilan Feldman ,  David Coates

IPC分类号： G09G3/36 ,  G02F1/137

CPC分类号： G09G3/3629 ,  G09G3/2014 ,  G09G3/2077 ,  G09G2300/0486 ,  G09G2330/021

摘要： A cholesteric liquid crystal display device comprises three cells each comprising a layer of cholesteric liquid crystal material and an electrode arrangement capable of providing independent driving of a plurality of pixels across the layer of cholesteric liquid crystal material by respective drive signals. A drive circuit applies a respective drive signal to each pixel to drive the pixel into states which are variable to provide a reflectance varying within a predetermined range of reflectances. The drive signals involve a combination of two drive schemes to provide reflectances in different portions of the range. In particular, (a) when providing a reflectance in a first portion of higher reflectance, the drive signals comprise a first waveform shaped to drive the pixel into a stable state, the waveform having a shape which is variable to provide a stable state having a varying reflectance; and (b) when providing a reflectance in a second portion of lower reflectance, the drive signals comprise a second waveform shaped to drive the pixel into the homeotropic state and the planar state alternately, the periods of time during which the pixel is driven into the homeotropic and planar states being variable to provide a varying average reflectance as perceived by a viewer. Such a combination of drive schemes allows a good contrast ratio and colour gamut to be achieved because of the use of the homeotropic state but only increases the power consumption by a relatively small amount as the homeotropic state is only used for a portion of the pixels.

摘要翻译： 胆甾醇型液晶显示装置包括三个单元，每个单元包括胆甾型液晶材料层和能够通过相应的驱动信号提供穿过胆甾型液晶材料层的多个像素的独立驱动的电极装置。 驱动电路将相应的驱动信号施加到每个像素以将像素驱动到可变的状态，以提供在预定反射范围内变化的反射率。 驱动信号涉及两个驱动方案的组合，以在该范围的不同部分提供反射。 特别地，（a）当在较高反射率的第一部分中提供反射率时，驱动信号包括成形为将像素驱动到稳定状态的第一波形，该波形具有可变的形状，以提供具有 变化反射率; 和（b）当在较低反射率的第二部分中提供反射率时，驱动信号包括形状为将像素驱动成垂直状态和平面状态的第二波形，其中像素被驱动到 垂直和平面状态是可变的，以提供观察者感觉到的变化的平均反射率。 驱动方案的这种组合允许由于使用垂直状态而实现良好的对比度和色域，而仅仅将像素的一部分使用垂直状态，而仅增加功率消耗相对较小的量。

公开(公告)号：US20090103027A1

公开(公告)日：2009-04-23

申请号：US11667838

申请日：2005-11-14

申请人： Christopher John Hughes ,  David Coates ,  Anthony Orlando Alkins

发明人： Christopher John Hughes ,  David Coates ,  Anthony Orlando Alkins

IPC分类号： G02F1/1347

CPC分类号： G02F1/13476 ,  G02F1/13718

摘要： A cholesteric liquid crystal display device (40) comprises a stack of three cells (10), each cell comprising a layer of cholesteric liquid crystal material (19) capable of being switched between a plurality of states including a planar state in which it reflects light with wavelengths in a central band (31) corresponding to red, green and blue, respectively, and in overtone bands (32, 33) on both sides of the central band (31). Each adjacent pair of cells 10 in the stack is held together by a layer of adhesive (42, 43). At least one of the layers of adhesive (42, 43) includes a red dye which is absorbent of light with wavelengths in the overtone bands (32) on the side of the central band (31) of lower wavelength. The red dye improves the perceived red colour of light reflected from the red cell (10R) by suppressing the overtone bands. The provision of the red dye in the adhesive provides several advantages in manufacture.

摘要翻译： 胆甾型液晶显示装置（40）包括三个单元（10）的堆叠，每个单元包括胆甾醇型液晶材料层（19），其能够在多个状态之间切换，所述多个状态包括反射光的平面状态 分别对应于红色，绿色和蓝色的中心频带（31）中的波长，以及在中心频带（31）两侧的泛音频带（32,33）。 堆叠中的每个相邻的单元格对10通过一层粘合剂（42,43）保持在一起。 粘合剂层（42,43）中的至少一层包括红色染料，其是在较低波长的中心带（31）侧上的泛音带（32）中具有波长的光的吸收剂。 红色染料通过抑制泛音带改善了从红细胞（10R）反射的光的感知红色。 在粘合剂中提供红色染料在制造中提供了几个优点。

公开(公告)号：US20130135568A1

公开(公告)日：2013-05-30

申请号：US13704826

申请日：2011-06-08

申请人： David Coates ,  Tony Orlando Alkins

发明人： David Coates ,  Tony Orlando Alkins

IPC分类号： G02F1/1335

CPC分类号： G02F1/133553 ,  G02F1/133504 ,  G02F1/133514 ,  G02F1/13718 ,  G02F2001/133567

摘要： 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.

摘要翻译： 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。