公开(公告)号：US07965359B2

公开(公告)日：2011-06-21

申请号：US12375899

申请日：2007-07-26

Applicant: Terry J. Scheffer ,  Jiuzhi Xue

Inventor： Terry J. Scheffer ,  Jiuzhi Xue

IPC: G02F1/1335

CPC classification number: G02F1/133753 ,  G02F2001/133761 ,  G02F2001/134372 ,  G02F2001/1398

Abstract: Self-compensating, quasi-homeotropic liquid crystal devices (100, 200, 300, 400) overcome the contrast reducing effects of smaller pretilt angles. The devices exhibit extremely high contrast ratio but at the same time suppress fringe field-induced disclination lines in high pixel density and small pixel size quasi-homeotropic displays. The surface pretilt (520, 540) and cell twist (570) angles are set at values that, in combination, contribute to establishing a cuspate singularity in the contrast ratio for normally incident light in response to a drive signal switching the liquid crystal device to the OFF director field state that provides nearly 0% optical efficiency. The OFF director field state corresponds to a subthreshold drive level that provides for the liquid crystal device self-compensation for in plane optical retardation. Setting the cell gap (“d”) to provide substantially 100% optical efficiency in response to a value of the drive signal switching the liquid crystal device to the ON director field state achieves optimal dynamic range for the liquid crystal device.

Abstract translation: 自补偿准准垂直液晶装置（100,200,300,400）克服了较小预倾斜角的对比度降低效果。 器件表现出非常高的对比度，同时抑制高像素密度和小像素大小准垂直显示器中的条纹场引发的旋错线。 表面预倾斜（520,540）和细胞扭曲（570）角度被设定为这样的值，其组合有助于响应于将液晶装置切换到液晶装置的驱动信号而在正常入射光的对比度中建立尖点奇异点 OFF指示器场状态提供近0％的光学效率。 OFF导向器场状态对应于提供用于平面光学延迟的液晶装置自补偿的亚阈值驱动电平。 设置单元间隙（“d”）以响应于将液晶装置切换到导通器磁场状态的驱动信号的值来提供基本上100％的光学效率，从而实现了液晶装置的最佳动态范围。

公开(公告)号：US5861869A

公开(公告)日：1999-01-19

申请号：US444652

申请日：1995-05-19

Applicant: Terry J. Scheffer ,  Arlie R. Conner ,  Benjamin R. Clifton ,  Dennis W. Prince

Inventor： Terry J. Scheffer ,  Arlie R. Conner ,  Benjamin R. Clifton ,  Dennis W. Prince

IPC: G09G3/20 ,  G09G3/36 ,  G09G5/10

CPC classification number: G09G3/3625 ,  G09G3/3622 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/2022

Abstract: Method and apparatus for providing gray level addressing for passive liquid crystal display (LCD) panels having overlapping row and column electrodes defining pixels are disclosed. Depending upon whether the rows are being addressed by "standard" or "Swift" addressing, the signals for applying to the column electrodes are determined by different calculations, in all of which modes the amplitudes of the column signals are related to the gray level desired to be displayed by the individual pixels. For a split interval system, column signals of appropriate amplitude and polarity are applied during different subintervals of a characteristic time interval of the display panel depending upon the method of addressing the rows. In the full interval mode, the column signals applied over a full time interval are based on the desired gray level of all the pixels in the column, adjusted to provide the proper rms voltage across all the pixels so that they display the desired gray levels. The adjustment can be spread across multiple addressing intervals and can be added into the column signal when rows are selected or can be applied to the column electrode when no row is selected.

Abstract translation: 公开了用于为具有重叠的行和列电极定义像素的无源液晶显示（LCD）面板提供灰度级寻址的方法和装置。 根据这些行是否被“标准”或“Swift”寻址来寻址，用于施加到列电极的​​信号由不同的计算确定，在所有这些模式中，列信号的幅度与期望的灰度级有关 由各个像素显示。 对于分割间隔系统，根据寻址行的方法，在显示面板的特征时间间隔的不同子间隔期间施加适当幅度和极性的列信号。 在全间隔模式下，在全时间间隔内施加的列信号基于列中所有像素的期望灰度级，被调整以提供跨所有像素的适当均方根电压，使得它们显示所需的灰度级。 调整可以跨多个寻址间隔分布，并且当行被选择时可以添加到列信号中，或者当没有选择行时可以将其应用于列电极。

公开(公告)号：US5852429A

公开(公告)日：1998-12-22

申请号：US684433

申请日：1996-07-19

Applicant: Terry J. Scheffer ,  Benjamin R. Clifton

Inventor： Terry J. Scheffer ,  Benjamin R. Clifton

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3625 ,  G09G3/3622 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/2022

Abstract: An addressing method and apparatus addresses faster responding liquid crystal display panels (LCDs) so that video rate, high information content LCDs having time constants on the order of 50 ms or less are perceived as having improved contrast by limiting peak voltage levels across the pixels. In a preferred embodiment, a first set of LCD electrodes is continuously driven with signals each comprising a train of pulses that are periodic in time, have a common period T, are independent of the information to be displayed, and are preferably orthonormal. Plural column signals are generated from the collective information states of the pixels defined by the overlap with a second electrode pattern. Each column signal is proportional to the sum, obtained by considering each pixel in the column, of the exclusive-or (XOR) products of the logic level of the amplitude of each row signal times the logic level of the information state of the pixel corresponding to that row. Hardware implementation comprises an external video source, a controller that receives and formats video data and timing information, a storage device that stores display data, a row signal generator, a column signal generator, and at least one LCD panel. Alternative embodiments provide circuits to reduce the number of column voltage levels required to generate a displayed image.

Abstract translation: 寻址方法和装置解决了更快响应的液晶显示面板（LCD），使得具有大约50ms或更小的时间常数的视频速率，高信息内容LCD被认为通过限制像素上的峰值电压电平具有改善的对比度。 在优选实施例中，第一组LCD电极被连续驱动，每个信号包括在时间上是周期性的脉冲串，具有公共周期T，独立于要显示的信息，并且优选地是正交的。 从与第二电极图案的重叠限定的像素的集合信息状态生成多个列信号。 每列信号与通过考虑列中的每个像素获得的和每行行信号的幅度的逻辑电平的异或（XOR）乘积乘以对应于像素的信息状态的逻辑电平而得到的和成比例 到那行 硬件实现包括外部视频源，接收和格式化视频数据和定时信息的控制器，存储显示数据的存储设备，行信号发生器，列信号发生器和至少一个LCD面板。 替代实施例提供用于减少生成显示图像所需的列电压电平数量的电路。

公开(公告)号：US5767836A

公开(公告)日：1998-06-16

申请号：US486369

申请日：1995-06-07

Applicant: Terry J. Scheffer ,  Arlie R. Conner ,  Benjamin R. Clifton

Inventor： Terry J. Scheffer ,  Arlie R. Conner ,  Benjamin R. Clifton

IPC: G02F1/133 ,  G09F9/00 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2011 ,  G09G3/3622 ,  G09G3/3625 ,  G09G3/2014 ,  G09G3/2022

Abstract: Method and apparatus for providing gray level addressing for passive liquid crystal display (LCD) panels having overlapping row and column electrodes defining pixels are disclosed. Depending upon whether the rows are being addressed by "standard" or "Swift" addressing, the signals for applying to the column electrodes are determined by different calculations, in all of which modes the amplitudes of the column signals are related to the gray level desired to be displayed by the individual pixels. For a split interval system, column signals of appropriate amplitude and polarity are applied during different subintervals of a characteristic time interval of the display panel depending upon the method of addressing the rows. In the full interval mode, the column signals applied over a full time interval are based on the desired gray level of all the pixels in the column, adjusted to provide the proper rms voltage across all the pixels so that they display the desired gray levels.

公开(公告)号：US5548422A

公开(公告)日：1996-08-20

申请号：US84874

申请日：1993-06-28

Applicant: Arlie Conner ,  Jonathan R. Biles ,  Terry J. Scheffer ,  Gary B. Kingsley

Inventor： Arlie Conner ,  Jonathan R. Biles ,  Terry J. Scheffer ,  Gary B. Kingsley

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363 ,  G02F1/1347

CPC classification number: G02F1/133621 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/13473 ,  G02F1/13363 ,  G02F2001/133638

Abstract: An optical notch filter component in a color LCD display comprises an electronically controllable variable retarder interposed between circularly polarizing elements. Entering light in a particular spectral region is circularly polarized by a first of the circularly polarizing elements, and selectively retarded by zero or a half wavelength by the retarder so as to controllably yield right or left handed circular polarization. The second circular polarizer transmits only one of the circular polarizations of the light. By controlling the circular polarization of the light with the retarder, the light is either transmitted or attenuated. More uniform stopband attenuation is provided when the optical notch filter component comprises oppositely handed circular polarizing elements and a variable retarder which applies zero retardation in one of its states. A direct view display system substantially without parallax effects is formed from a stacked assembly of the notch filter components with thin substrate construction. Higher contrast is provided by doubly analyzing each color band.

Abstract translation: 彩色LCD显示器中的光学陷波滤波器组件包括插入在圆偏振元件之间的电子可控可变延迟器。 进入特定光谱区域的光被第一个圆偏振元件圆偏振，并且被延迟器选择性地延迟零或一半的波长，从而可控地产生右旋或左旋圆偏振。 第二圆偏振器仅透射光的圆偏振中的一种。 通过用延迟器控制光的圆偏振，光被传输或衰减。 当光学陷波滤波器组件包括相反方向的圆形偏振元件和在其状态之一中施加零延迟的可变延迟器时，提供更均匀的阻带衰减。 基本上没有视差效应的直视图显示系统由具有薄衬底结构的陷波滤波器组件的堆叠组件形成。 通过双重分析每个色带提供更高的对比度。

公开(公告)号：US5473338A

公开(公告)日：1995-12-05

申请号：US77859

申请日：1993-06-16

Applicant: Dennis W. Prince ,  John K. Grosspietsch ,  Benjamin R. Clifton ,  Terry J. Scheffer

Inventor： Dennis W. Prince ,  John K. Grosspietsch ,  Benjamin R. Clifton ,  Terry J. Scheffer

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3625 ,  G09G3/3614 ,  G09G3/3622 ,  G09G3/2007 ,  G09G3/2022

Abstract: The optical response of the pixels of many flat panel display devices, such as liquid crystal displays (2), depends upon the spectral components, as well as the rms value, of the pixel voltage waveform during a frame period. Because each row and column electrode (10 and 11) addresses multiple pixels (14), the spectral voltage components of the voltage across any pixel during a frame period will depend upon the optical state of other pixels in the same column (11). This crosstalk phenomena can be greatly reduced by modifying the addressing signals. One method of modifying the addressing signals is to modulate them so that the spectral components of all pixel voltage waveforms fall primarily in a frequency band (54) in which the optical response is nearly independent of the frequency. Another method is to analyze (220) the spectral components of the pixel voltage waveform over a frame period before it is displayed and adjust (222) the amplitude of the addressing signals to compensate for the frequency dependence of the optical response. When using a gray scale addressing method involving an adjustment factor, such as one based upon virtual pixels (266), the value of each virtual information element (270) is multiplied by a correction factor to compensate for the different frequency components associated with the virtual row.

Abstract translation: 诸如液晶显示器（2）的许多平板显示装置的像素的光学响应取决于在帧周期期间的像素电压波形的频谱分量以及有效值。 因为每个行和列电极（10和11）都寻址多个像素（14），所以在帧周期期间跨任何像素的电压的光谱电压分量将取决于同一列（11）中其他像素的光学状态。 通过修改寻址信号可以大大减少串扰现象。 修改寻址信号的一种方法是调制它们，使得所有像素电压波形的光谱分量主要落在其中光学响应几乎与频率无关的频带（54）中。 另一种方法是在显示之前的帧周期上分析（220）像素电压波形的光谱分量，并且调整（222）寻址信号的幅度以补偿光学响应的​​频率依赖性。 当使用涉及诸如基于虚拟像素（266）的调整因子的灰度级寻址方法时，将每个虚拟信息元素（270）的值乘以校正因子以补偿与虚拟像素相关联的不同频率分量 行。

公开(公告)号：US4218281A

公开(公告)日：1980-08-19

申请号：US911663

申请日：1978-06-01

Applicant: Rino Doriguzzi ,  Markus Egloff ,  Meinolph Kaufmann ,  Terry J. Scheffer

Inventor： Rino Doriguzzi ,  Markus Egloff ,  Meinolph Kaufmann ,  Terry J. Scheffer

IPC: G02F1/1335 ,  G02F1/13357 ,  G04G9/00 ,  G09F9/30 ,  G02F1/03 ,  B32B31/12

CPC classification number: G02F1/133615 ,  G02F1/1335 ,  G04G9/0041 ,  G09F9/30

Abstract: A process for the manufacture of an electrooptical display device including a circuit board and a liquid crystal display cell mounted on the circuit board, including forming a circuit board having at least one light conducting region; disposing the liquid crystal display cell adjacent the light conducting region of the circuit board; locating at least one light emitting element in the circuit board for illuminating the light conducting region; and attaching a semi-transparent reflector to the liquid crystal cell; wherein at least part of the circuit board is manufactured by combining a reflecting layer, which is produced by the deposition of a reflective material on a substrate or on one side of a mesh, with a light diffusing substance, by embedding these two materials together in a transparent polyester or epoxy resin.

Abstract translation: 一种制造电光显示装置的方法，包括安装在电路板上的电路板和液晶显示单元，包括形成具有至少一个导光区域的电路板; 将液晶显示单元配置在电路板的导光区域附近; 将至少一个发光元件放置在所述电路板中以照亮所述导光区域; 并将半透明反射器附接到液晶单元; 其中，所述电路板的至少一部分通过将通过将所述两种材料嵌入在一起而将通过将反射材料沉积在基板上或在网的一侧上的反射层与光漫射物质组合而制成 透明聚酯或环氧树脂。

公开(公告)号：US4106859A

公开(公告)日：1978-08-15

申请号：US684251

申请日：1976-05-07

Applicant: Rino Doriguzzi ,  Markus Egloff ,  Meinolph Kaufmann ,  Jurgen Nehring ,  Terry J. Scheffer

Inventor： Rino Doriguzzi ,  Markus Egloff ,  Meinolph Kaufmann ,  Jurgen Nehring ,  Terry J. Scheffer

IPC: G09F9/00 ,  G02B5/126 ,  G02F1/1335 ,  C09K3/34 ,  B05D3/12 ,  C03C17/00 ,  G02F1/01

CPC classification number: G02B5/126 ,  G02F1/133553 ,  Y10S359/90 ,  Y10T428/1077 ,  Y10T428/24355 ,  Y10T428/24364 ,  Y10T428/24521 ,  Y10T428/24975

Abstract: A novel light scattering reflector and methods of making and using it are disclosed. The reflector, which can advantageously be used in conjunction with liquid crystal displays, includes a layer carrier formed of glass or rigid PVC foil. The layer carrier is roughened by sandblasting, impressing with a grooved die, or by other techniques to provide an irregular surface. A reflective metal coating is subsequently evaporated onto the roughened surface to complete the reflector structure. Auxiliary materials may also be coated onto the layer carrier to improve the characteristics of the device.

Abstract translation: 公开了一种新颖的光散射反射器及其制造和使用方法。 可以有利地与液晶显示器一起使用的反射器包括由玻璃或刚性PVC箔形成的层载体。 层状载体通过喷砂粗糙化，用沟槽模具进行压印，或通过其它技术来提供不规则表面。 反射金属涂层随后蒸发到粗糙表面上以完成反射器结构。 辅助材料也可以涂覆到载体上以改善装置的特性。

公开(公告)号：US4032218A

公开(公告)日：1977-06-28

申请号：US581082

申请日：1975-05-27

Applicant: Terry J. Scheffer

Inventor： Terry J. Scheffer

IPC: G02F1/1347 ,  C09K19/50 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139 ,  G09F9/00 ,  G02F1/13

CPC classification number: C09K19/50 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/133553 ,  G02F1/1396 ,  G02F2001/133638 ,  G02F2201/08 ,  G02F2201/343

Abstract: An improved apparatus is disclosed for producing and modulating monochromatic light and is characterized by a bright, high contrast display surface. The apparatus includes a linear polarizer positioned between a light source and a liquid crystal cell, and utilizes, as a reflector, a substance with a helical structure. A circular polarizer is positioned between the liquid crystal cell and the reflector.

Abstract translation: 公开了用于产生和调制单色光的改进的装置，其特征在于明亮的高对比度显示表面。 该装置包括位于光源和液晶单元之间的线性偏振器，并且使用具有螺旋结构的物质作为反射器。 圆偏振器位于液晶单元和反射器之间。