公开(公告)号：US6104448A

公开(公告)日：2000-08-15

申请号：US465192

申请日：1999-12-15

申请人： J. William Doane ,  Deng-Ke Yang ,  Liang-Chy Chien

发明人： J. William Doane ,  Deng-Ke Yang ,  Liang-Chy Chien

IPC分类号： C09K19/02 ,  C09K19/54 ,  C09K19/58 ,  G02F1/01 ,  G02F1/137

CPC分类号： G02F1/13718 ,  C09K19/02 ,  C09K19/542 ,  C09K19/586 ,  G02F1/0131 ,  G02F2001/13775

摘要： A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that permits the liquid crystal to change textures upon the application of a field and ruggedizes the structure. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field. In yet another embodiment, the application of mechanical force to the cell changes the material from an optically clear state to a light reflecting state.

摘要翻译： 新型液晶光调制元件和材料的特征在于液晶和聚合物的液晶光调制材料，液晶是具有正介电各向异性的手性向列液晶，并且包括有效形成焦圆锥和扭曲的量的手性材料 平面纹理，聚合物在液晶单元中以相分离的畴分布，其量允许液晶在施加场合时改变纹理并且使结构坚固化。 在另一个实施方案中，该材料在彩色光反射状态下的零场稳定性，在其间具有光散射状态和多个稳定的反射状态，以及在场的存在下光学清晰。 在另一个实施例中，向电池施加机械力将材料从光学透明状态改变为光反射状态。

公开(公告)号：US5691795A

公开(公告)日：1997-11-25

申请号：US425289

申请日：1995-04-20

申请人： J. William Doane ,  Deng-Ke Yang ,  Liang-Chy Chien

发明人： J. William Doane ,  Deng-Ke Yang ,  Liang-Chy Chien

IPC分类号： C09K19/02 ,  C09K19/54 ,  C09K19/58 ,  G02F1/01 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1335

CPC分类号： C09K19/586 ,  C09K19/02 ,  C09K19/542 ,  C09K19/544 ,  G02F1/13718 ,  G02F1/0131 ,  G02F2001/13345 ,  G02F2001/13775

摘要： A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.

摘要翻译： 新型液晶光调制元件和材料的特征在于液晶和聚合物的液晶光调制材料，液晶是具有正介电各向异性的手性向列液晶，并且包括有效形成焦圆锥和扭曲的量的手性材料 平面纹理，聚合物在液晶单元中以相分离的畴分布，其量在不存在场的情况下稳定焦锥和扭曲的平面纹理，并且允许液晶在施加场时改变纹理。 在一个实施例中，该材料是在场关断状态下的光散射并且在场导通条件下是光学透明的，而在另一实施例中，该材料在场关闭状态下是光学透明的并且在场导通条件下的光散射 。 在另一个实施方案中，该材料在彩色光反射状态下的零场稳定性，在其间具有光散射状态和多个稳定的反射状态，以及在场的存在下光学清晰。

公开(公告)号：US5251048A

公开(公告)日：1993-10-05

申请号：US885754

申请日：1992-05-18

申请人： J. William Doane ,  Deng-Ke Yang

发明人： J. William Doane ,  Deng-Ke Yang

IPC分类号： G02F1/1334 ,  G02F1/137 ,  G02F3/02 ,  G09G3/36 ,  G02F1/133

CPC分类号： G02F1/1334 ,  G09G3/3629 ,  G09G3/3696 ,  G02F1/13718 ,  G02F3/022 ,  G09G2300/0486

摘要： A light modulating apparatus comprising a liquid crystal light modulating material confined between substrates, elongated electrically-conductive paths supported on opposite sides of the light modulating material by the substrates and a pair of gating systems for supplying voltage pulses to the electrically conductive paths for addressing the light modulating material is disclosed. The light modulating material includes polydomains of polymer network dispersed in a chiral nematic liquid crystal having positive dielectric anisotropy. This material is confined by the substrates between inner surfaces treated to promote homogeneous alignment of the liquid crystal near the inner surfaces. The apparatus provides energy efficient passive control of a bistable light modulating material.

摘要翻译： 一种光调制装置，包括限制在基板之间的液晶光调制材料，由基板支撑在光调制材料的相对侧上的细长导电路径和用于向导电路径提供电压脉冲的一对门控系统， 公开了光调制材料。 光调制材料包括分散在具有正介电各向异性的手性向列型液晶中的聚合物网络的多畴。 这种材料被处理过的内表面之间的衬底所限制，以促进内表面附近的液晶的均匀取向。 该装置提供双稳态光调制材料的能量效率被动控制。

公开(公告)号：US6061107A

公开(公告)日：2000-05-09

申请号：US852589

申请日：1997-05-07

申请人： Deng-Ke Yang ,  Zhijian Lu ,  J. William Doane

发明人： Deng-Ke Yang ,  Zhijian Lu ,  J. William Doane

IPC分类号： G02F1/1334 ,  G02F1/137 ,  G02F1/1333 ,  G02F1/1339

CPC分类号： G02F1/13718 ,  G02F1/1334

摘要： Polymer/cholesteric liquid crystal dispersions are provided in which the liquid crystal phase separated from the polymer matrix to form droplets. The cholesteric liquid crystals were positive dielectric anisotropic. At a zero field condition, the liquid crystal in the droplets was bistable, that is, the liquid crystal can be in either the reflecting planar state or the scattering focal conic state. When the liquid crystal 101 was in the planar texture, the helical axis of the liquid crystal was more or less perpendicular to the cell surface; colored light 105 was Bragg reflected. When the liquid crystal 101 was in the focal conic texture, the helical axis was more or less parallel to the cell surface, incident light was scattering 106 in the forward direction.

摘要翻译： 提供聚合物/胆甾型液晶分散体，其中液晶相与聚合物基质分离形成液滴。 胆固醇液晶呈正介电各向异性。 在零场条件下，液滴中的液晶是双稳态的，即液晶可以处于反射平面状态或散射焦锥状态。 当液晶101处于平面结构时，液晶的螺旋轴或多或少垂直于单元表面; 彩色灯105被布拉格反射。 当液晶101处于焦锥状纹理时，螺旋轴或多或少地平行于单元表面，入射光向前方散射106。

公开(公告)号：US20100289999A1

公开(公告)日：2010-11-18

申请号：US12779293

申请日：2010-05-13

申请人： Deng-Ke Yang ,  Young Cheol Yang ,  Rui Bao

发明人： Deng-Ke Yang ,  Young Cheol Yang ,  Rui Bao

IPC分类号： C09K19/02 ,  C09K19/00 ,  C09K19/58

CPC分类号： C09K19/544 ,  C09K19/12 ,  C09K19/2007 ,  C09K19/542 ,  C09K2019/0448 ,  C09K2019/548

摘要： The invention provides a liquid crystal (LC) composition, a LC device such as a liquid crystal display and a phase modulator, and a method thereof. The liquid crystal composition comprises a liquid crystal and a polymer. The liquid crystal exhibits a macroscopic anisotropic property such as optical property in the absence of the polymer under a condition such as certain temperature. The polymer in the composition stabilizes the liquid crystal so that the liquid crystal exhibits a macroscopic isotropic property under the same condition, and the liquid crystal stabilized by the polymer exhibits the macroscopic anisotropic property when an electrical field is applied thereon. The devices exhibit technical merits such as large viewing angle, fast response time, better contrast ratio, easy manufacturability of large size display with improved dark state, easy manufacturing process with wider temperature region, and polarization-insensitivity of PSI phase modulator, among others.

摘要翻译： 本发明提供液晶（LC）组合物，液晶显示器和相位调制器等LC器件及其方法。 液晶组合物包含液晶和聚合物。 在一定温度的条件下，液晶在不存在聚合物的情况下表现出宏观的各向异性特性。 组合物中的聚合物使液晶稳定，使得在相同条件下液晶显示宏观的各向同性，并且当施加电场时，由聚合物稳定的液晶表现出宏观的各向异性特性。 该装置具有视觉角度大，响应时间快，对比度高，易于制造，具有改善的暗态的大尺寸显示器，易于制造温度范围宽的制造工艺，以及PSI相位调制器的极化不敏感性等优点。

公开(公告)号：US06268839B1

公开(公告)日：2001-07-31

申请号：US09076577

申请日：1998-05-12

申请人： Deng-Ke Yang ,  Xiao-Yang Huang ,  Nick M. Miller

发明人： Deng-Ke Yang ,  Xiao-Yang Huang ,  Nick M. Miller

IPC分类号： G09G336

CPC分类号： G09G3/3629 ,  G09G3/2018 ,  G09G3/2051 ,  G09G2300/0486

摘要： A series of drive schemes are used to apply a single phase of at least one voltage pulse to drive a display with a bistable cholesteric liquid crystal material to a gray scale reflectance. Each drive scheme takes into consideration the initial texture of the cholesteric material and the range of voltages that may be applied between maximum and minimum reflectance of the material. Application of the single phase can be implemented by either time modulation or amplitude modulation.

摘要翻译： 使用一系列驱动方案来施加至少一个电压脉冲的单相以将具有双稳态胆甾型液晶材料的显示器驱动至灰度级反射。 每个驱动方案考虑了胆甾型材料的初始纹理以及可能在材料的最大和最小反射率之间施加的电压范围。 单相的应用可以通过时间调制或幅度调制来实现。

公开(公告)号：US20150362649A1

公开(公告)日：2015-12-17

申请号：US14738392

申请日：2015-06-12

申请人： Deng-Ke Yang ,  Alireza Moheghi ,  Hossein Nemati

发明人： Deng-Ke Yang ,  Alireza Moheghi ,  Hossein Nemati

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1334 ,  G02F1/1337

CPC分类号： G02F1/133528 ,  G02B5/3016 ,  G02B6/0031 ,  G02B6/0055 ,  G02B6/0056 ,  G02B6/0066 ,  G02B27/286 ,  G02F1/1334 ,  G02F1/133524 ,  G02F1/133723 ,  G02F1/13439 ,  G02F2001/133531 ,  G02F2001/133738

摘要： A polarizing waveguide plate includes a pair of spaced transparent plates that define a gap therebetween. Disposed within the gap is a composite material formed of a mixture of polymer mater and liquid crystal material. Positioned proximate to one edge of the gap is an edge light, while a reflector/converter is positioned proximate to another edge of the gap. During operation, unpolarized light is emitted from the edge light and is received within the gap. As such, a portion of the light polarized in a first direction is permitted to exit the waveguide, while the remaining portion of the light that is polarized in a second direction, orthogonal to the first direction, is converted by the converter/reflector so that its polarization is also in the first direction. As such, substantially all of the unpolarized light from the edge light is emitted by the polarizing waveguide plate as polarized light.

摘要翻译： 偏振波导板包括在其间限定间隙的一对间隔开的透明板。 在间隙内设置由聚合物和液晶材料的混合物形成的复合材料。 靠近间隙的一个边缘定位的是边缘光，而反射器/转换器被定位成接近间隙的另一边缘。 在操作期间，非偏振光从边缘光发射并被接收在间隙内。 这样，允许沿第一方向偏振的光的一部分离开波导，而与第一方向垂直的第二方向偏振的光的剩余部分由转换器/反射器转换，使得 其极化也在第一个方向。 因此，来自边缘光的基本上所有的非偏振光作为偏振光被偏振波导板发射。

公开(公告)号：US20120194498A1

公开(公告)日：2012-08-02

申请号：US13183444

申请日：2011-07-15

申请人： Deng-Ke Yang ,  Heng-Yin Chen ,  Young-Cheol Yang ,  Rafael S. Zola ,  Chao-Chiun Liang ,  Chih-Jen Chen

发明人： Deng-Ke Yang ,  Heng-Yin Chen ,  Young-Cheol Yang ,  Rafael S. Zola ,  Chao-Chiun Liang ,  Chih-Jen Chen

IPC分类号： G09G3/36 ,  G06F3/038

CPC分类号： G09G3/3651 ,  G09G2310/06 ,  G09G2310/061

摘要： A bi-stable active matrix (AM) display apparatus and a method for driving a display panel thereof are provided. The bi-stable AM display apparatus includes a bi-stable AM display panel, a scan driver, a data driver and a controller. A frame period is divided into a resetting phase and a determining phase. The controller resets pixels on a plurality of scan lines of the bi-stable AM display panel to a homotropic state in the resetting phase through the scan driver and the data driver. The controller writes frame information into the pixels on the scan lines in the determining phase through the scan driver and the data driver.

摘要翻译： 提供一种双稳态有源矩阵（AM）显示装置及其显示面板的驱动方法。 双稳态AM显示装置包括双稳态AM显示面板，扫描驱动器，数据驱动器和控制器。 帧周期被分为复位阶段和确定阶段。 控制器通过扫描驱动器和数据驱动器将复位阶段中的双稳态AM显示面板的多条扫描线上的像素复位为同型态。 控制器通过扫描驱动器和数据驱动器在确定阶段将帧信息写入扫描线上的像素。

公开(公告)号：US06204835B1

公开(公告)日：2001-03-20

申请号：US09076564

申请日：1998-05-12

申请人： Deng-Ke Yang ,  Yang-Ming Zhu

发明人： Deng-Ke Yang ,  Yang-Ming Zhu

IPC分类号： G09G336

CPC分类号： G09G3/3629 ,  G09G3/2007 ,  G09G2300/0486 ,  G09G2310/06 ,  G09G2310/065 ,  G09G2320/0247

摘要： Bistable cholesteric liquid crystal material is disposed between opposed substrates, wherein one of the substrates has a first plurality of electrodes facing a second plurality of electrodes on the other substrate, wherein the intersection of the first and the second plurality of electrodes forms a plurality of pixels. The material is addressed by applying a preparation voltage across the first and second plurality of electrodes and then subsequently applying a selection voltage across the first and second plurality of electrodes. The material is then allowed to relax for a period of time, whereupon the preparation and selection voltages are reapplied. These steps are repeated until the liquid crystal material obtains the desired reflectance.

摘要翻译： 双稳态胆甾型液晶材料设置在相对的基板之间，其中一个基板具有面对另一基板上的第二多个电极的第一多个电极，其中第一和第二多个电极的交点形成多个像素 。 通过在第一和第二多个电极上施加制备电压然后随后在第一和第二多个电极上施加选择电压来解决材料。 然后使材料放松一段时间，然后重新应用制备和选择电压。 重复这些步骤，直到液晶材料获得所需的反射率。

公开(公告)号：US5877826A

公开(公告)日：1999-03-02

申请号：US796228

申请日：1997-02-06

申请人： Deng-Ke Yang ,  Ming Xu

发明人： Deng-Ke Yang ,  Ming Xu

IPC分类号： C09K19/02 ,  G02F1/1347 ,  G02F1/137 ,  G02F1/133 ,  G02F1/1335

CPC分类号： G02F1/13473 ,  C09K19/0208 ,  G02F1/13718

摘要： A liquid crystal shutter and a drive waveform for controlling the same is presented by this invention. The liquid crystal shutter includes two distinct layers of liquid crystal material where one layer has a right hand twist sense and the other layer has a left hand twist sense. An electric field is selectively applied to the layers of liquid crystal material which have dual frequency properties. Accordingly, when a low frequency is applied to the liquid crystal materials they exhibit a positive dielectric anisotropy and a homeotropic texture which is substantially transparent. When a high frequency electric field is applied to the liquid crystal materials they exhibit a negative dielectric anisotropy and a planar texture which is substantially reflective. The liquid crystal material may be selected to selectively reflect predetermined spectrums of light. By alternatingly applying low and high frequencies to the liquid crystal shutter, the transition time between the transparent and reflective states is minimized.

摘要翻译： 本发明提出一种液晶快门及其控制驱动波形。 液晶快门包括两层不同的液晶材料层，其中一层具有右手扭曲感，另一层具有左手扭曲感。 选择性地将电场施加到具有双频特性的液晶材料层。 因此，当向液晶材料施加低频时，它们呈现正的介电各向异性和基本上透明的垂直纹理。 当向液晶材料施加高频电场时，它们呈现负介电各向异性和基本反射的平面纹理。 可以选择液晶材料以选择性地反射预定光谱。 通过将低频和高频交替地施加到液晶快门，透明和反射状态之间的转变时间被最小化。