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公开(公告)号：US20170176784A1
公开(公告)日：2017-06-22
申请号：US14971094
申请日：2015-12-16
IPC分类号： G02F1/137 , G02F1/139 , G02F1/1334 , G02F1/133 , G02F1/1333 , G02F1/1335
CPC分类号： G02F1/137 , G02F1/13306 , G02F1/133305 , G02F1/13338 , G02F1/1334 , G02F1/133555 , G02F1/13718 , G02F1/1391 , G02F2203/02 , G02F2203/05 , G02F2203/34
摘要： A multicolored pressure sensitive liquid crystal device includes a first transparent substrate that is flexible on which pressure is applied and a second substrate spaced apart from the first substrate. Also included are electrically conductive layers, one of which is in contact with the first substrate and is transparent and another of which is in contact with the second substrate. The electrically conductive layers are separated from each other. Also included is a pressure sensitive liquid crystal layer including cholesteric liquid crystal disposed between the electrically conductive layers. The liquid crystal layer includes at least first and second color regions. The first color region reflects light of a first color and the second color region reflects light of a second color. The pressure applied to the substrate results in a change in reflectance of the liquid crystal. In another aspect, the liquid crystal layer can include at least first and second regions that differ from each other in terms of a characteristic selected from the group consisting of wavelength of reflection, reflectivity, linewidth, electrooptic response, pressure sensitivity and combinations thereof.
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公开(公告)号：US10287503B2
公开(公告)日：2019-05-14
申请号：US15160767
申请日：2016-05-20
IPC分类号： C09K19/02 , C09K19/54 , G02F1/1334 , G02F1/137
摘要： An enhanced brightness cholesteric liquid crystal eWriter device for writing and drawing includes substrates and electrically conductive layers disposed on the substrates. There is a gap, d, between the electrically conductive layers. Polymer dispersed cholesteric liquid crystal material is disposed in the gap. The polymer dispersed cholesteric liquid crystal material exhibits a written reflectance, R, which occurs in response to pressure applied to one of the substrates that changes reflectance of the cholesteric liquid crystal material. The device follows the relationship Rd1 d2, where Rd2 is a written reflectance of an eWriter device of gap d2 and Rd1 is written reflectance of another eWriter device of gap d1. Further, a cholesteric liquid crystal eWriter device includes a layer of cholesteric liquid crystal material in a cell gap, d, wherein d
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公开(公告)号：US10088701B2
公开(公告)日：2018-10-02
申请号：US14069901
申请日：2013-11-01
发明人： Asad Khan , Mauricio Echeverri , Erica Montbach
IPC分类号： G02F1/1333 , G02F1/137 , G06F1/16 , G06F3/0354 , G06F3/041
摘要： A cholesteric liquid crystal (ChLC) electronic writing device incorporates a dot pattern recognition system. When writing pressure is applied to the writing device an image composed of writing or drawing is displayed by a pressure sensitive ChLC polymer dispersion stacked in a multilayer system of the device. A specialized stylus with sensor and associated electronics is used to form the image on the electronic writing device. The stylus produces electrical information indicating the path or trajectory of the writing that is displayed by the electronic writing device, which can be transferred via wireless signal to any other displaying device. This forms a replica image on the displaying device that is a replica of the image on the electronic writing device.
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公开(公告)号：US09927672B2
公开(公告)日：2018-03-27
申请号：US14971094
申请日：2015-12-16
IPC分类号： G02F1/137 , G02F1/133 , G02F1/1334 , G02F1/1335 , G02F1/139 , G02F1/1333
CPC分类号： G02F1/137 , G02F1/13306 , G02F1/133305 , G02F1/13338 , G02F1/1334 , G02F1/133555 , G02F1/13718 , G02F1/1391 , G02F2203/02 , G02F2203/05 , G02F2203/34
摘要： A multicolored pressure sensitive liquid crystal device includes a first transparent substrate that is flexible on which pressure is applied and a second substrate spaced apart from the first substrate. Also included are electrically conductive layers, one of which is in contact with the first substrate and is transparent and another of which is in contact with the second substrate. The electrically conductive layers are separated from each other. Also included is a pressure sensitive liquid crystal layer including cholesteric liquid crystal disposed between the electrically conductive layers. The liquid crystal layer includes at least first and second color regions. The first color region reflects light of a first color and the second color region reflects light of a second color. The pressure applied to the substrate results in a change in reflectance of the liquid crystal. In another aspect, the liquid crystal layer can include at least first and second regions that differ from each other in terms of a characteristic selected from the group consisting of wavelength of reflection, reflectivity, linewidth, electrooptic response, pressure sensitivity and combinations thereof.
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公开(公告)号：US20150124178A1
公开(公告)日：2015-05-07
申请号：US14069901
申请日：2013-11-01
发明人： Asad Khan , Mauricio Echeverri , Erica Montbach
IPC分类号： G02F1/1333 , G06F1/16 , G06F3/0354 , G02F1/137
CPC分类号： G02F1/13338 , G02F1/13718 , G06F1/1652 , G06F3/03545 , G06F3/041
摘要： A cholesteric liquid crystal (ChLC) electronic writing device incorporates a dot pattern recognition system. When writing pressure is applied to the writing device an image composed of writing or drawing is displayed by a pressure sensitive ChLC polymer dispersion stacked in a multilayer system of the device. A specialized stylus with sensor and associated electronics is used to form the image on the electronic writing device. The stylus produces electrical information indicating the path or trajectory of the writing that is displayed by the electronic writing device, which can be transferred via wireless signal to any other displaying device. This forms a replica image on the displaying device that is a replica of the image on the electronic writing device.
摘要翻译： 胆甾型液晶（ChLC）电子书写装置结合了点阵图形识别系统。 当对写入装置施加写入压力时，通过堆叠在装置的多层系统中的压敏ChLC聚合物分散体显示由书写或绘图组成的图像。 使用具有传感器和相关电子设备的专用触笔在电子书写装置上形成图像。 触笔产生指示由电子书写装置显示的书写的路径或轨迹的电信息，该电子书写装置可通过无线信号传送到任何其他显示装置。 这在显示装置上形成作为电子书写装置上的图像的副本的复本图像。
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