公开(公告)号：US20090096942A1

公开(公告)日：2009-04-16

申请号：US12220805

申请日：2008-07-29

申请人： Tod L. Schneider ,  Erica Montbach ,  J. William Doane

发明人： Tod L. Schneider ,  Erica Montbach ,  J. William Doane

IPC分类号： G02F1/1335

CPC分类号： G02F1/13718 ,  B43L1/00 ,  G02F1/13338 ,  G02F1/13475 ,  G02F2001/13478

摘要： An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color.

摘要翻译： 电子书写板由一层或多层构成，其上形成图像并且可以选择性地擦除。 本发明的一个方面是一种双稳态胆甾型写字板，在施加书写压力的同时形成图像。 图像可以完全擦除，并在平板电脑上写入新的图像。 此外，可以选择性地擦除书写图像的任何或所有部分以恢复原始背景颜色。 本发明的另一方面是一种多色堆叠书写片，其中通过在片剂的表面上使用诸如无钉触针的仪器在施加书写压力的同时选择图像的颜色（通常通过施加合适的电压）。 书写片剂包括双稳态胆甾型液晶材料的至少两层或三层叠层。 选择的颜色可以被加法混合以达到所需的中间颜色。 图像可以完全擦除，并在平板电脑上写入新的图像。 此外，可以选择性地擦除书写图像的任何或所有部分以恢复原始背景颜色。

公开(公告)号：US20070237906A1

公开(公告)日：2007-10-11

申请号：US11762174

申请日：2007-06-13

申请人： Quan Li ,  Lisa Green ,  J. Doane ,  Asad Khan ,  Nithya Venkataraman ,  Irina Shiyanovskaya

发明人： Quan Li ,  Lisa Green ,  J. Doane ,  Asad Khan ,  Nithya Venkataraman ,  Irina Shiyanovskaya

IPC分类号： C09K19/00

CPC分类号： G02F1/133305 ,  G02F1/1334 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1036

摘要： A photodisplay device in which an optically addressed image can be viewed indefinitely, erased and readdressed with a new image is disclosed. Optically responsive reversible photochiral materials are incorporated into a bistable cholesteric liquid crystal in an electrooptic display cell. A high resolution image exposed on the cell is fixed by a low voltage pulse to unpatterned electrodes and can be, at a later time, erased with a high voltage pulse.

摘要翻译： 公开了一种光学显示装置，其中可以无限期地观看光学寻址的图像，用新的图像擦除和读取。 光电响应的可逆光学手性材料被并入到电子显微镜中的双稳态胆甾型液晶中。 在电池上暴露的高分辨率图像通过低电压脉冲固定到未图案化的电极，并且可以在稍后的时间用高电压脉冲擦除。

公开(公告)号：US20070126674A1

公开(公告)日：2007-06-07

申请号：US10587548

申请日：2005-01-28

申请人： J. William Doane ,  Asad Khan ,  Irina Shiyanovskaya

发明人： J. William Doane ,  Asad Khan ,  Irina Shiyanovskaya

IPC分类号： G09G3/36

CPC分类号： B32B27/00 ,  B32B2307/202 ,  B32B2457/202 ,  B44C1/105 ,  G02F1/133305 ,  G02F1/1334 ,  G02F1/13476 ,  G02F1/13718 ,  G02F2001/13478 ,  G02F2001/13613

摘要： The present invention relates to a display film that may be transferred by lamination or otherwise onto a substrate. The display film is formed of a stack of layers that can include different types, arrangements, and functionality within the stack depending upon factors including the characteristics of the substrate (e.g., upper or lower, transparent or opaque, substrates) and addressing of the display (e.g., active or passive matrix, electrical or optical addressing). The layers of the stacked display film include one or more electrode layers and one or more liquid crystal layers and, in addition, may include various combinations of an adhesive layer, preparation layer, casting layer, light absorbing layer, insulation layers, and protective layers. The liquid crystal layer can include cholesteric or other liquid crystal material. The liquid crystal layer can be a dispersion of liquid crystal in a polymer matrix formed by a variety of techniques. The display film may interact with components mounted on or laminated to the substrate, including a solar cell, active matrix backplane and electrodes. The display film may be mounted onto flexible or drapable substrates such as fabric and can itself be drapable. Thus, the invention offers substantial flexibility in fabrication and design that has not been previously possible in the display industry.

摘要翻译： 本发明涉及可以通过层压或其它方式转移到基底上的显示膜。 显示膜由堆叠形成，其可以包括堆叠内的不同类型，布置和功能，这取决于包括衬底的特性（例如，上或下，透明或不透明的衬底）和显示器的寻址的因素 （例如，有源或无源矩阵，电或光寻址）。 堆叠显示膜的层包括一个或多个电极层和一个或多个液晶层，并且还可以包括粘合剂层，制备层，浇铸层，光吸收层，绝缘层和保护层的各种组合 。 液晶层可以包括胆甾型或其它液晶材料。 液晶层可以是通过各种技术形成的聚合物基质中液晶的分散体。 显示膜可以与安装在基板上或层叠在基板上的部件相互作用，包括太阳能电池，有源矩阵背板和电极。 显示膜可以安装在诸如织物的柔性或可悬垂的基底上，并且本身可以是悬垂的。 因此，本发明在制造和设计方面提供了在显示器行业中以前不可能的巨大灵活性。

公开(公告)号：US07170481B2

公开(公告)日：2007-01-30

申请号：US11046487

申请日：2005-01-28

申请人： Joseph W. Doane ,  Asad A. Khan ,  Irina Shiyanovskaya ,  Tod Schneider ,  Oleg Pishnyak ,  Seth E. Green ,  Forrest N. Nicholson ,  Liang-Chy Chien

发明人： Joseph W. Doane ,  Asad A. Khan ,  Irina Shiyanovskaya ,  Tod Schneider ,  Oleg Pishnyak ,  Seth E. Green ,  Forrest N. Nicholson ,  Liang-Chy Chien

IPC分类号： G09G3/36

CPC分类号： B32B27/00 ,  B32B2307/202 ,  B32B2457/202 ,  B44C1/105 ,  G02F1/133305 ,  G02F1/1334 ,  G02F1/13476 ,  G02F1/13718 ,  G02F2001/13478 ,  G02F2001/13613

摘要： The present invention relates to a display film that may be transferred by lamination or otherwise onto a substrate. The display film is formed of a stack of layers that can include different types, arrangements, and functionality within the stack depending upon factors including the characteristics of the substrate (e.g., upper or lower, transparent or opaque, substrates) and addressing of the display (e.g., active or passive matrix, electrical or optical addressing). The layers of the stacked display film include one or more electrode layers and one or more liquid crystal layers and, in addition, may include various combinations of an adhesive layer, preparation layer, casting layer, light absorbing layer, insulation layers, and protective layers. The liquid crystal layer can include cholesteric or other liquid crystal material. The liquid crystal layer can be a dispersion of liquid crystal in a polymer matrix formed by a variety of techniques. The display film may interact with components mounted on or laminated to the substrate, including a solar cell, active matrix backplane and electrodes. The display film may be mounted onto flexible or drapable substrates such as fabric and can itself be drapable. A liquid crystal display includes the display film and a single substrate for supporting the display film. Thus, the invention offers substantial flexibility in fabrication and design that has not been previously possible in the display industry.

摘要翻译： 本发明涉及可以通过层压或其它方式转移到基底上的显示膜。 显示膜由堆叠形成，其可以包括堆叠内的不同类型，布置和功能，这取决于包括衬底的特性（例如，上或下，透明或不透明的衬底）和显示器的寻址的因素 （例如，有源或无源矩阵，电或光寻址）。 堆叠显示膜的层包括一个或多个电极层和一个或多个液晶层，并且还可以包括粘合剂层，制备层，浇铸层，光吸收层，绝缘层和保护层的各种组合 。 液晶层可以包括胆甾型或其它液晶材料。 液晶层可以是通过各种技术形成的聚合物基质中液晶的分散体。 显示膜可以与安装在基板上或层叠在基板上的部件相互作用，包括太阳能电池，有源矩阵背板和电极。 显示膜可以安装在诸如织物的柔性或可悬垂的基底上，并且本身可以是悬垂的。 液晶显示器包括显示膜和用于支撑显示膜的单个基板。 因此，本发明在制造和设计方面提供了在显示器行业中以前不可能的巨大灵活性。

公开(公告)号：US07023409B2

公开(公告)日：2006-04-04

申请号：US09780737

申请日：2001-02-09

申请人： Chris Blackson ,  Todd Ernst ,  Xiao-Yang Huang

发明人： Chris Blackson ,  Todd Ernst ,  Xiao-Yang Huang

IPC分类号： G09G3/36

CPC分类号： G09G3/3629 ,  G09G3/2018 ,  G09G3/2081 ,  G09G2300/0486

摘要： A method of addressing a bistable liquid crystal material having incremental reflectance properties disposed between opposed substrates is disclosed. One substrate has a first plurality of electrodes deposited thereon facing a second substrate which has a second plurality of electrodes disposed thereon. The intersection of the first and second plurality of electrodes forms a plurality of pixels. The addressing method includes applying a predetermined number of pulses to the first plurality of electrodes, and applying a like number of the predetermined number of pulses to the second plurality of electrodes. Each of the predetermined number of pulses has a different frequency, wherein the predetermined number of pulses are applied in a set time period.

公开(公告)号：US09134561B2

公开(公告)日：2015-09-15

申请号：US14057261

申请日：2013-10-18

申请人： Kent Displays Incorporated

发明人： Duane W. Marhefka

IPC分类号： G02F1/1333 ,  G06F3/046 ,  G06F3/041 ,  G06F3/038 ,  G06F3/045

CPC分类号： G02F1/13338 ,  G06F3/038 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/045 ,  G06F3/046

摘要： A drawing tablet device, utilizing a data capture device in connection with a pressure sensitive display, provides electronic information corresponding to images drawn on the pressure sensitive display to an external device. The drawing tablet includes a communication interface to couple the drawing tablet to the external device to transmit electronic information corresponding to images in real-time or as stored files.

摘要翻译： 利用与压敏显示器相关联的数据捕获装置的绘图装置向与外部装置提供对应于在压敏显示器上绘制的图像的电子信息。 绘图板包括用于将绘图板耦合到外部设备的通信接口，以便实时地或作为存储的文件传输对应于图像的电子信息。

公开(公告)号：US09005478B2

公开(公告)日：2015-04-14

申请号：US14147730

申请日：2014-01-06

申请人： Donald R. Diehl ,  Erica N. Montbach

发明人： Donald R. Diehl ,  Erica N. Montbach

IPC分类号： C09K19/32 ,  C09K19/58 ,  C07C69/76 ,  C07C49/00 ,  C07C255/57 ,  C07D321/00 ,  C07D321/10 ,  C07D321/12

CPC分类号： C09K19/586 ,  C07C255/57 ,  C07D321/00 ,  C07D321/10 ,  C07D321/12 ,  C09K2019/323 ,  Y10T428/10

摘要： A liquid crystal composition comprising a chiral dopant compound represented by the following structure (Structure 1): wherein: R1 and R2 are independently hydrogen, —(C═O)R9, —(C═O)R10, alkyl, aryl, alkaryl, alkenyl, cycloalkyl, alkoxyaryl, or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; R3 is hydrogen, halogen, cyano, alkoxy, NHCOR9, NHSO2R9, COOR9, OCOR9, aryl, alkyl, alkenyl, cycloalkyl, or heterocyclic all either substituted or unsubstituted; R4 is hydrogen, alkyl, aryl, alkenyl, cycloalkyl, or heterocyclic all either substituted or unsubstituted; R5, R6, R7, and R8 are independently hydrogen, halogen, cyano, alkoxy, NHCOR9, NHSO2R9, COOR9, OCOR9, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted, or combine with each other, or R5 can combine with R4 to form a carbocyclic or heterocyclic ring; R9 and R10 are independently alkyl, alkoxy, aryl, naphthyl, styryl, alkenyl, cycloalkyl, alkoxyaryl, cycloalkoxy, or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring. Also featured are liquid crystal compositions comprising a chiral dopant compound represented by any of Structure 2-4.

摘要翻译： 一种液晶组合物，其包含由以下结构（结构1）表示的手性掺杂剂化合物：其中：R 1和R 2独立地为氢， - （C = O）R 9， - （C = O）R 10，烷基，芳基，烷芳基， 烯基，环烷基，烷氧基芳基或杂环，均为取代或未取代的，或组合形成碳环或杂环; R3是氢，卤素，氰基，烷氧基，NHCOR9，NHSO2R9，COOR9，OCOR9，芳基，烷基，烯基，环烷基或杂环，全部是取代或未取代的; R4是氢，烷基，芳基，烯基，环烷基或杂环，全部是取代或未取代的; R5，R6，R7和R8独立地为氢，卤素，氰基，烷氧基，NHCOR9，NHSO2R9，COOR9，OCOR9，芳基，烷基，烯基，环烷基，烷氧基芳基或杂环，全部是取代或未取代的，或彼此结合，或 R5可与R4结合形成碳环或杂环; R 9和R 10独立地是烷基，烷氧基，芳基，萘基，苯乙烯基，烯基，环烷基，烷氧基芳基，环烷氧基或杂环，全部是取代或未取代的，或组合形成碳环或杂环。 还有一种液晶组合物，其包含由结构2-4中任一个表示的手性掺杂剂化合物。

公开(公告)号：US20130342432A1

公开(公告)日：2013-12-26

申请号：US13965255

申请日：2013-08-13

申请人： Kent Displays Incorporated

发明人： Tod Schneider ,  Oleg Pishnyak ,  Andrew DeMiglio ,  Mark Lightfoot ,  Duane Marhefka

IPC分类号： G09G3/34

CPC分类号： G09G3/3493 ,  G02F1/13338 ,  G02F1/133553 ,  G02F1/13718 ,  G06F3/041 ,  G09G3/3629

摘要： A display device includes a cholesteric liquid crystal writing tablet and a piezoelectric transducer. The piezoelectric transducer is subjected to a mechanical force that generates a voltage that is applied to the writing tablet that erases writing on the writing tablet. A further feature is a display device comprising a cholesteric liquid crystal display and a piezoelectric transducer. The piezoelectric transducer is subjected to a mechanical force that generates a voltage that is applied to the display that places the display in at least one of a color reflective planar state, a substantially transparent focal conic state and a gray scale state. Also featured is a method of erasing a cholesteric liquid crystal writing tablet.

摘要翻译： 显示装置包括胆甾型液晶书写板和压电换能器。 压电换能器受到产生施加到写入片上的电压的机械力，该写入片擦除书写片上的书写。 另一个特征是包括胆甾型液晶显示器和压电换能器的显示装置。 压电换能器经受机械力，其产生施加到显示器的电压，该显示器将显示器放置在彩色反射平面状态，基本上透明的焦点锥形状态和灰度状态中的至少一个中。 还有一种擦除胆甾型液晶书写片的方法。

公开(公告)号：US20120273725A1

公开(公告)日：2012-11-01

申请号：US13456622

申请日：2012-04-26

申请人： Donald R. Diehl ,  Thomas Welter ,  Erica N. Montbach ,  J. William Doane ,  Nithya Venkataraman

发明人： Donald R. Diehl ,  Thomas Welter ,  Erica N. Montbach ,  J. William Doane ,  Nithya Venkataraman

IPC分类号： C07D321/12 ,  C09K19/20 ,  C07D321/10 ,  C07D321/00 ,  C07D493/04

CPC分类号： C09K19/586 ,  C09K19/588 ,  Y10T428/10 ,  Y10T428/1036

摘要： A liquid crystal composition comprising a chiral dopant compound represented by the following formula: wherein: R1, R2 are independently aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; R3 and R4 are independently hydrogen, halogen, cyano, alkoxy, NHCOR7, NHSO2R7, COOR7, OCOR7, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine with either R1 or R2 to form a carbocylic or heterocyclic ring; R5 and R6 are independently hydrogen, CH2, CH, alkyl or aryl either substituted or unsubstituted, COOR7, or combine with L to form a carbocyclic or heterocyclic ring; R7 is aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted; L is the non-metallic elements required to form a carbocyclic or heterocyclic ring, or a single bond or a double bond; m is 1-3; n is 0-12.

摘要翻译： 一种液晶组合物，其包含由下式表示的手性掺杂剂化合物：其中：R 1，R 2独立地为取代或未取代的芳基，烷基，烯基，环烷基，烷氧基芳基，烷芳基或杂环，或组合形成碳环或杂环 ; R 3和R 4独立地为氢，卤素，氰基，烷氧基，NHCOR 7，NHSO 2 R 7，COOR 7，OCOR 7，芳基，烷基，烯基，环烷基，烷氧基芳基，烷芳基或杂环，均为取代或未取代的，或与R 1或R 2结合形成 碳环或杂环; R 5和R 6独立地是氢，CH 2，CH，被取代或未取代的COOR 7的烷基或芳基，或与L结合以形成碳环或杂环; R7是芳基，烷基，烯基，环烷基，烷氧基芳基或杂环，全部是取代或未取代的; L是形成碳环或杂环或单键或双键所需的非金属元素; m为1-3; n为0-12。

公开(公告)号：US20090033811A1

公开(公告)日：2009-02-05

申请号：US12152729

申请日：2008-05-16

申请人： Tod L. Schneider

发明人： Tod L. Schneider

IPC分类号： G02F1/133

CPC分类号： G06F3/0412

摘要： One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed by applying a suitable voltage while applying writing pressure, which results in a focal conic texture in a reduced gap region of the active layer while not changing the texture of the unreduced gap region of the active layer (e.g., a written portion being in a focal conic texture on a background in the planar texture). Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected by applying a suitable voltage while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be erased and new images written on the tablet. Gray scale achieved by varying the applied voltage during writing or the writing pressure in some cases, enables the writing tablet to produce a broad range of colors. The writing device is suitable for many applications such as a toy, sketch pad, erasable signage, tags or a large writing board without the mess of chalk or ink.

摘要翻译： 本发明的一个方面是一种双稳态胆甾型写字板，其上通过在施加写入压力的同时施加合适的电压而形成图像，这导致在有源层的缩小的间隙区域中的焦点圆锥形纹理，而不改变有源层的纹理 有源层的未减少的间隙区域（例如，在平面纹理中的背景上的焦点锥形纹理中的书写部分）。 本发明的另一方面是一种多色堆叠书写片，其中通过施加适当的电压，同时使用诸如未触摸笔的仪器在片剂的表面上施加书写压力来选择图像的颜色。 书写片剂包括双稳态胆甾型液晶材料的至少两层或三层叠层。 选择的颜色可以被加法混合以达到所需的中间颜色。 图像可以被擦除，并在平板电脑上写入新的图像。 在一些情况下，通过改变写入期间的施加电压或书写压力实现的灰度使得书写平板电脑能够产生宽范围的颜色。 书写装置适用于诸如玩具，素描垫，可擦除标牌，标签或大型书写板之类的许多应用程序，而无需粉笔或油墨。