公开(公告)号：US07009666B2

公开(公告)日：2006-03-07

申请号：US09961441

申请日：2001-09-24

申请人： Asad A. Khan ,  Michael E. Stefanov ,  Clive Catchpole

发明人： Asad A. Khan ,  Michael E. Stefanov ,  Clive Catchpole

IPC分类号： G02F1/1335 ,  G02F1/1333 ,  G02F1/01 ,  G02F21/00

CPC分类号： G02F1/133528 ,  G02F1/133536 ,  G02F1/133555 ,  G02F1/133723 ,  G02F1/13718 ,  G02F2001/133541 ,  G02F2001/133738 ,  G02F2001/133757

摘要： A reflective cholesteric display that may be viewed under a wide range of ambient lighting conditions, ranging from complete darkness to bright sunlight. The display includes a chiral nematic liquid crystal material located between first and second substrates, an ambidextrous or bi-directional circular polarizer, a partial mirror, also referred to as a transflector, and a light source. The liquid crystal material includes focal conic and planar textures that are stable in the absence of an electric field. The ambidextrous circular polarizer is located adjacent to one of the substrates that constrain the liquid crystal material. The chiral nematic liquid crystal display may be operated in both a transmissive mode and a reflective mode.

公开(公告)号：US5188171A

公开(公告)日：1993-02-23

申请号：US902201

申请日：1992-06-22

申请人： Michael E. Stefanov ,  Rand R. Biggers ,  Jeff W. Rish, III ,  Girardeau L. Henderson ,  Chuong N. Pham

发明人： Michael E. Stefanov ,  Rand R. Biggers ,  Jeff W. Rish, III ,  Girardeau L. Henderson ,  Chuong N. Pham

IPC分类号： F28F13/00 ,  F28F27/00

CPC分类号： F28F27/00 ,  F28F13/00 ,  F28F2013/008

摘要： A liquid-crystal heat valve is constructed to be controlled with multiple ectrode pairs. So constructed, it is controllable by alternating electric potentials in different phases applied to corresponding electrode pairs, thus increasing the maximum heat-transfer rate of the heat valve by increasing its duty cycle.

摘要翻译： 液晶加热阀被构造成用多​​个电极对进行控制。 如此构造，可以通过施加到相应电极对的不同相中的交替电位来控制，从而通过增加其占空比来增加热阀的最大热传递速率。

公开(公告)号：US4637725A

公开(公告)日：1987-01-20

申请号：US780520

申请日：1985-09-26

申请人： Michael E. Stefanov ,  Brian J. Sullivan ,  Anthony J. Ticknor

发明人： Michael E. Stefanov ,  Brian J. Sullivan ,  Anthony J. Ticknor

IPC分类号： G01B9/02 ,  G01J9/02 ,  G01B11/02

CPC分类号： G01B9/02097 ,  G01B9/02038 ,  G01J9/02 ,  G01B2290/10

摘要： An interferometer in Mach-Zehnder configuration comprises beamsplitters (10, 12) and mirrors (11, 13), which divide an optical beam whose wavefront is to be monitored into an information component and a reference component, and which recombine the information and reference components to form an interference pattern that changes dynamically at a spatial light modulator (14) in response to dynamic variations in the atmosphere through which the beam passes. A spatial light filter (15) comprising a plate with a pin-hole aperture is positioned to transmit the reference component of the beam, but with second-order aberrations being removed from the reference component prior to recombination of the information and reference components. The wavefront of the reference component that recombines with the information component is a substantially unaberrated version of the wavefront of the beam whose wavefront is to be monitored. An acousto-optical beam-steering device (20) steers the reference component in real time so as to maintain substantially continuous alignment of a maximum-intensity centroid of the reference component with respect to the pin-hole aperture of the spatial light filter (15).

摘要翻译： Mach-Zehnder配置的干涉仪包括分束器（10,12）和反射镜（11,13），其将要监视波阵面的光束分成信息分量和参考分量，并将信息和参考分量 以形成响应于光束通过的大气中的动态变化而在空间光调制器（14）处动态变化的干涉图案。 包括具有针孔孔径的板的空间光过滤器（15）被定位成传输光束的参考分量，但是在信息和参考分量的重组之前将二阶像差从参考分量中去除。 与信息分量重组的参考分量的波前是要监视其波阵面的波束的波阵面的基本上未经修改的版本。 声光束转向装置（20）实时地引导基准分量，以保持参考分量的最大强度重心相对于空间滤光器（15）的针孔孔径的基本连续对准 ）。

公开(公告)号：US06833894B2

公开(公告)日：2004-12-21

申请号：US09758775

申请日：2001-01-11

申请人： Jignesh V. Gandhi ,  Michael E. Stefanov

发明人： Jignesh V. Gandhi ,  Michael E. Stefanov

IPC分类号： G02F11335

CPC分类号： G02F1/13363 ,  G02F2001/1398 ,  G02F2202/40 ,  G02F2203/02 ,  G02F2203/64 ,  G02F2413/02 ,  G02F2413/07 ,  G02F2413/08

摘要： A high contrast twisted nematic liquid crystal cell in which outgoing or reflected light is linearly polarized and has the same polarization angle as incoming or incident light when the cell is in an off state. Matching the polarization axes of incoming and outgoing light allows less light to pass through a final analyzer with the cell in an off state to provide a darker off state, and allows more light through with the cell in an on state, resulting in an enhanced contrast ratio display. A method of determining placement of optical retarders for enhanced contrast in a reflective twisted nematic liquid crystal display device is also described.

摘要翻译： 高对比度扭转向列液晶单元，其中输出或反射光线性偏振并且当单元处于关闭状态时具有与入射或入射光相同的偏振角。 匹配入射光和出射光的偏振轴允许较少的光通过最终的分析仪，其中电池处于关闭状态以提供较暗的关闭状态，并且允许更多的光通过电池处于导通状态，导致增强的对比度 比率显示。 还描述了在反射扭曲向列型液晶显示装置中确定用于增强对比度的光学延迟器的放置的方法。

公开(公告)号：US06172720B2

公开(公告)日：2001-01-09

申请号：US08862561

申请日：1997-05-23

申请人： Asad Aziz Khan ,  Stanley Joseph Laskos, Jr. ,  Michael E. Stefanov

发明人： Asad Aziz Khan ,  Stanley Joseph Laskos, Jr. ,  Michael E. Stefanov

IPC分类号： G02F1133

CPC分类号： C09K19/54

摘要： A liquid crystal material for a display device includes a first chiral nematic liquid crystal component and a second component that exhibits no liquid crystalline phase at any temperature. The second component is present in an amount effective to reduce the bulk viscosity of the liquid crystal material by at least about 26% at room temperature or is present in an amount of at least about 5% by weight based upon the total weight of the liquid crystal material. The liquid crystal material may have a positive dielectric anisotropy. The second component may have a molecular weight not exceeding 205 grams/mole. Embodiments relate to a display device comprising the present material. Another aspect includes a method of increasing the switching speed in a display that employs the present material.

摘要翻译： 用于显示装置的液晶材料包括在任何温度下不显示液晶相的第一手征向列型液晶组分和第二组分。 第二组分的存在量有效地在室温下将液晶材料的体积粘度降低至少约26％，或以基于液体总重量的至少约5重量％的量存在 水晶材料。 液晶材料可具有正的介电各向异性。 第二组分的分子量可以不超过205克/摩尔。 实施例涉及包括本材料的显示装置。 另一方面包括增加采用本材料的显示器中的切换速度的方法。

公开(公告)号：US5963289A

公开(公告)日：1999-10-05

申请号：US957984

申请日：1997-10-27

申请人： Michael E. Stefanov ,  John H. Erdmann ,  Christopher Frank ,  Yimin Ji

发明人： Michael E. Stefanov ,  John H. Erdmann ,  Christopher Frank ,  Yimin Ji

IPC分类号： G02F1/1333 ,  G02F1/13

CPC分类号： G02F1/133351

摘要： A method of manufacturing liquid crystal on silicon devices uses asymmetric placement of scribes on silicon and glass substrate layers to maximize the yield of processed active matrix silicon wafers. Asymmetrical scribing minimizes a dimension from a gasket seal between the substrates to a lower bond pad edge. An opposite glass overhang provides an interconnect redundancy for an ITO plate or a repair site for electrical contact to the ITO plate. Methods of device separation employing partial sawing are also employed.

摘要翻译： 在硅器件上制造液晶的方法使用在硅和玻璃基底层上划线的不对称放置，以使处理的有源矩阵硅晶片的产量最大化。 不对称划线使得从基板之间的垫圈密封到下焊接边缘的尺寸最小化。 相对的玻璃突出部为ITO板或与ITO板的电接触的修复部位提供互连冗余。 还采用使用部分锯切的装置分离方法。