公开(公告)号：US5748277A

公开(公告)日：1998-05-05

申请号：US390068

申请日：1995-02-17

申请人： Xiao-Yang Huang ,  Philip J. Bos ,  Deng-Ke Yang

发明人： Xiao-Yang Huang ,  Philip J. Bos ,  Deng-Ke Yang

IPC分类号： G02F1/137 ,  G09G3/20 ,  G09G3/36 ,  C09K19/02 ,  G09G5/00

CPC分类号： G09G3/3629 ,  G02F1/13718 ,  G09G2300/0486 ,  G09G2310/0205 ,  G09G2310/06 ,  G09G2320/0209 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/3681

摘要： A flat-panel liquid crystal display. The display includes a flat sheet of bistable chiral nematic liquid crystal material activated by a drive circuit that individually controls the display state of multiple picture elements at a refresh rate 1000 scan lines per second. The driver circuitry activates the liquid crystal domains into homeotropic states over a relatively long activation period and then, during a short (.about.1 msec.) selection period, either keeps the domains in a homeotropic state or initiate a transition to the transient twisted planar state. The drivers then activate the domains in an evolution phase to provide either focal conic or twisted planar end states across the two-dimensional array of picture elements.

摘要翻译： 平板液晶显示屏。 显示器包括由驱动电路激活的双稳态手性向列型液晶材料的平板，其以刷新率以每秒1000扫描线单独地控制多个图像元素的显示状态。 驱动器电路在相对较长的激活时间段内将液晶畴激活成垂直状态，然后在短（差分1毫秒）选择周期期间，将域保持在垂直状态或启动到瞬态扭曲平面状态的转变 。 然后，驱动程序在进化阶段激活域，以提供横跨二维图像元素阵列的焦点圆锥或扭曲的平面端状态。

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：US6154190A

公开(公告)日：2000-11-28

申请号：US852319

申请日：1997-05-07

申请人： Deng-Ke Yang ,  Yang-Ming Zhu ,  Xiao-Yang Huang

发明人： Deng-Ke Yang ,  Yang-Ming Zhu ,  Xiao-Yang Huang

IPC分类号： G02F1/133 ,  G02F1/137 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3629 ,  G02F1/13718 ,  G09G2300/0486 ,  G09G2310/0205 ,  G09G2310/06 ,  G09G2320/0209 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/3681

摘要： A flat-panel liquid crystal display. The display includes a flat sheet of bistable chiral nematic liquid crystal material activated by a drive circuit that individually controls the display state of multiple picture elements. The driver circuitry activates the liquid crystal domains with various drive schemes which have any number of different phases to attain various addressing sequence times. At the end of each drive scheme, the texture of the liquid crystal material is allowed to provide either focal conic or twisted planar end states across the two-dimensional array of picture elements. Each drive scheme employs at least a preparation phase and a selection phase to predispose the liquid crystal material to one of the end states.

摘要翻译： 平板液晶显示屏。 显示器包括由驱动电路激活的双稳态手性向列型液晶材料的平板，其单独控制多个图像元素的显示状态。 驱动器电路利用具有任意数量的不同相位的各种驱动方案激活液晶畴，以获得各种寻址顺序时间。 在每个驱动方案结束时，允许液晶材料的纹理在图像元素的二维阵列之间提供焦点圆锥或扭曲的平面端状态。 每个驱动方案至少使用准备阶段和选择阶段来将液晶材料倾向于其中一个结束状态。

公开(公告)号：US20080037306A1

公开(公告)日：2008-02-14

申请号：US11464698

申请日：2006-08-15

申请人： Duane Marhefka ,  Todd Ernst ,  Xiao-Yang Huang

发明人： Duane Marhefka ,  Todd Ernst ,  Xiao-Yang Huang

IPC分类号： H02M5/00

CPC分类号： G09G3/3629 ,  G09G3/3696 ,  G09G2330/021

摘要： A device and method for supplying a display, such as a liquid crystal display, for example a bistable ChLCD, with drive voltages for extremely low power operation. The method and the device implementing the method provides an energy storage device and a voltage converter being utilized to store energy in the storage device, such that a display can be driven during an inactive, powered-down phase of the converter by using the stored energy to drive the display.

摘要翻译： 用于提供诸如液晶显示器（例如双稳态ChLCD）的显示器的装置和方法具有用于极低功率操作的驱动电压。 实现该方法的方法和装置提供了一种能量存储装置和电压转换器，用于在存储装置中存储能量，使得可以通过使用存储的能量在转换器的无效，断电阶段期间驱动显示器 驱动显示。

公开(公告)号：US07317437B2

公开(公告)日：2008-01-08

申请号：US10983802

申请日：2004-11-08

申请人： Xiao-Yang Huang ,  Nick Martin Miller, IV

发明人： Xiao-Yang Huang ,  Nick Martin Miller, IV

IPC分类号： G09G3/36

CPC分类号： G09G3/3651 ,  G02F1/1368 ,  G09G5/363 ,  G09G5/39 ,  G09G2300/0486 ,  G09G2310/04 ,  G09G2320/041 ,  G09G2320/103 ,  G09G2330/022

摘要： A graphics controller for a color display system having a bistable liquid crystal display (LCD) for displaying a plurality of pixels arranged in a matrix includes a memory device for storing color data and status bits corresponding to each of the pixels, and a generating device for generating voltage data corresponding to the pixels based on the color data and the status bits for each of the pixels. In an exemplary case, the bistable LCD is a Cholesteric LCD. Preferably, the generating device has a first mode of operation in which the data corresponding to the pixels is generated for each corresponding pixel and a second mode of operation in which no data is generated; the generating device switches from the first operating mode to the second operating mode when all of the status bits for all of the pixels are zeros.

摘要翻译： 用于具有用于显示矩阵排列的多个像素的双稳态液晶显示器（LCD）的彩色显示系统的图形控制器包括用于存储与每个像素相对应的颜色数据和状态位的存储器件，以及用于 基于每个像素的颜色数据和状态位产生对应于像素的电压数据。 在示例性情况下，双稳态LCD是胆甾型LCD。 优选地，生成装置具有第一操作模式，其中针对每个对应的像素产生对应于像素的数据，以及不产生数据的第二操作模式; 当所有像素的所有状态位都为零时，生成装置从第一操作模式切换到第二操作模式。

公开(公告)号：US20070279350A1

公开(公告)日：2007-12-06

申请号：US11626428

申请日：2007-01-24

申请人： Xiao-Yang Huang ,  Duane Marhefka ,  Todd Ernst

发明人： Xiao-Yang Huang ,  Duane Marhefka ,  Todd Ernst

IPC分类号： G09G3/36

CPC分类号： G09G3/3651 ,  G09G3/3692

摘要： An apparatus and method of using a driver (e.g., a commercially available, off-the-shelf driver) designed for a traditional passive matrix liquid crystal display, such as a Twisted Nematic (TN) and supertwisted nematic (STN) displays, for example, to drive a bistable liquid crystal display.

摘要翻译： 使用为传统的无源矩阵液晶显示器（例如扭曲向列（TN））和超扭曲向列（STN）显示器设计的驱动器（例如，市售的现成的驱动器）的装置和方法，例如 ，以驱动双稳态液晶显示器。

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：US06819310B2

公开(公告)日：2004-11-16

申请号：US09836319

申请日：2001-04-18

申请人： Xiao-Yang Huang ,  Nick Martin Miller, IV

发明人： Xiao-Yang Huang ,  Nick Martin Miller, IV

IPC分类号： G09G336

CPC分类号： G09G3/3651 ,  G02F1/1368 ,  G09G3/3688 ,  G09G5/363 ,  G09G5/39 ,  G09G2300/0486 ,  G09G2310/04 ,  G09G2310/06 ,  G09G2320/041 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2330/022

摘要： A low power color display system includes a memory which, stores color data and status bits corresponding to a plurality of pixels, status logic, which generates the status bits responsive to receipt of color data for a respective one of the pixels, a data generator, which generates voltage data corresponding to the pixels based on the color data and the status bits for each of the pixels, driver circuitry, which generates voltage signals responsive to receipt of the voltage data for each of the pixels, and a bistable liquid crystal display (LCD) having multiple cells arranged in a matrix, each cell corresponding to a pixel, the LCD being responsive to the voltage signals. Preferably, the system also includes a power supply which provides power to the driver circuitry, and a power manager, the latter turning the power supply ON when the data generator is in the first operating mode and turning the power supply OFF when the data generator is in the second operating mode. The data generator generates the voltage data for a corresponding pixel N times to thereby permit application of the voltage signal corresponding to the pixel data to the LCD N time, where N is an integer established by the status bits.

摘要翻译： 低功率彩色显示系统包括存储器，其存储与多个像素相对应的颜色数据和状态位，状态逻辑，响应于对于像素中的相应一个的颜色数据的接收而产生状态位，数据生成器， 其基于颜色数据和每个像素的状态位产生对应于像素的电压数据，驱动器电路响应于每个像素的电压数据的接收而产生电压信号，以及双稳态液晶显示器 LCD），其具有排列成矩阵的多个单元，每个单元对应于像素，LCD响应于电压信号。 优选地，该系统还包括向驱动器电路提供电力的电源和功率管理器，后者在数据发生器处于第一操作模式时将电源接通并且当数据发生器为 在第二种操作模式。 数据发生器生成对应像素的电压数据N次，从而允许将对应于像素数据的电压信号施加到LCD N时间，其中N是由状态位建立的整数。

公开(公告)号：US06532052B1

公开(公告)日：2003-03-11

申请号：US09378830

申请日：1999-08-23

申请人： Asad A. Khan ,  Xiao-Yang Huang ,  J. William Doane ,  Gene A. Miceli ,  Donald J. Davis

发明人： Asad A. Khan ,  Xiao-Yang Huang ,  J. William Doane ,  Gene A. Miceli ,  Donald J. Davis

IPC分类号： G02F11335

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

摘要： The present invention is directed to a cholesteric liquid crystal display that includes a homogeneous alignment surface effective to provide increased brightness, low focal conic reflectance and/or reflected light treat is to a significant degree circularly polarized. The homogeneous alignment surface substantially homogeneously aligns the liquid crystal director adjacent thereto. The homogeneous alignment surface may be disposed on one or both sides of a cell of the display. In the case of a cell in which the homogeneous alignment surface is disposed on only one side, the substrate with the inhomogeneous alignment surface may be upstream or downstream of the substrate with the homogeneous alignment surface relative to a direction of incident light. Also included especially in the case of a cell that has the homogeneous alignment surface on both sides is the use of a polarizer to provide very good brightness and low focal conic reflectance. Such a cell may employ an alignment layer material with a high pretilt angle. A stacked display may be produced including at least one cell with at least one homogeneous alignment surface. In particular, a stacked cell display may include a lower cell with two homogeneous alignment surfaces and an upper cell in which the top side has an inhomogeneous alignment surface and the bottom side has a homogeneous alignment surface. The present invention achieves any one or combinations of the above features through the use of the homogeneous alignment surface produced with a predetermined alignment layer material and predetermined alignment conditions. The invention also includes a method of making the inventive display and the stacked inventive display.

摘要翻译： 本发明涉及一种胆甾醇型液晶显示器，其包括有效提供增加的亮度，低焦圆锥反射率和/或反射光的均匀取向表面，其处理程度是圆度极化的显着程度。 均匀取向表面基本均匀地排列与其相邻的液晶指向器。 均匀排列表面可以设置在显示器的单元的一侧或两侧。 在均匀排列表面仅设置在一侧的单元的情况下，具有不均匀取向表面的基板可以在基板的上游或下游，具有相对于入射光的方向的均匀取向表面。 特别是在具有两侧具有均匀取向表面的电池的情况下，使用偏振器提供非常好的亮度和低焦点二次曲线反射率。 这样的电池可以采用具有高预倾角的取向层材料。 可以生产堆叠的显示器，其包括具有至少一个均匀对准表面的至少一个单元。 特别地，层叠电池显示器可以包括具有两个均匀对准表面的下电池和上电池，其中顶侧具有不均匀的配向表面，并且底侧具有均匀的对准表面。 本发明通过使用由预定取向层材料制成的均匀取向表面和预定的取向条件来实现上述特征中的任何一种或组合。 本发明还包括制造本发明的显示器和叠层的本发明显示器的方法。

公开(公告)号：US06366330B1

公开(公告)日：2002-04-02

申请号：US09469548

申请日：1999-12-22

申请人： Asad Aziz Khan ,  Xiao-Yang Huang

发明人： Asad Aziz Khan ,  Xiao-Yang Huang

IPC分类号： G02F1133

CPC分类号： C09K19/54 ,  C09K19/542 ,  G02F1/13718 ,  Y10T428/10

摘要： A liquid crystal material for a display device includes a liquid crystal material comprising first chiral nematic liquid crystal component and a second component that exhibits no liquid crystalline phase. The second component is present in an amount not greater than 5% by weight based upon the total weight of the liquid crystal display material and is effective to avoid image sticking of the display device when in use. The liquid crystal material has positive dielectric anisotropy. The second component may have a molecular weight not exceeding 205 grams/mole.

摘要翻译： 用于显示装置的液晶材料包括包含第一手性向列型液晶组分和不显示液晶相的第二组分的液晶材料。 基于液晶显示材料的总重量，第二组分的存在量不超过5重量％，并且在使用时有效地避免了显示装置的图像残留。 液晶材料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。