Dual-frequency, dielectric anisotropy liquid crystal display
    2.
    发明授权
    Dual-frequency, dielectric anisotropy liquid crystal display 失效
    双频,介电各向异性液晶显示

    公开(公告)号:US4688899A

    公开(公告)日:1987-08-25

    申请号:US754397

    申请日:1985-07-11

    摘要: A liquid crystal apparatus has first and second liquid crystal substrates opposing each other. Segment electrodes are formed on the inner surface of the first substrate. Common electrodes are formed on the inner surface of the second substrate. Seal members seal a liquid crystal composition in a predetermined region between the segment electrodes and the common electrodes. Light shutters are formed by these electrodes and the liquid crystal composition sealed therebetween. In order to reduce influence of a hysteresis effect in the liquid crystal composition when a high frequency electric field is applied, the liquid crystal composition has a dielectric scattering phenomenon in which its dielectric anisotropy in response a low frequency electric field is larger than the absolute value of its dielectric anisotropy in response a high frequency electric field.

    摘要翻译: 液晶装置具有彼此相对的第一和第二液晶基板。 在第一基板的内表面上形成有段电极。 公共电极形成在第二基板的内表面上。 密封构件在分段电极和公共电极之间的预定区域中密封液晶组合物。 光闸由这些电极形成并且液晶组合物之间被密封。 为了降低施加高频电场时的液晶组合物的滞后效应的影响,液晶组合物具有介电散射现象,其中低频电场响应的介电各向异性大于绝对值 其介电各向异性响应于高频电场。

    Color liquid crystal display device
    3.
    发明授权
    Color liquid crystal display device 失效
    彩色液晶显示装置

    公开(公告)号:US5852430A

    公开(公告)日:1998-12-22

    申请号:US629508

    申请日:1996-04-09

    申请人: Kenzo Endo

    发明人: Kenzo Endo

    IPC分类号: G09G3/36

    CPC分类号: G09G3/3607 G09G2320/041

    摘要: A temperature detection circuit and two RAMs are connected to a conversion circuit for converting image data into voltage designation signals and outputting the signals to a signal electrode driver. The temperature detection circuit detects the temperature of a liquid crystal display element as one of conditions which influence the behavior of liquid crystal molecules. One RAM is used to store a conversion table in which voltage designation signals for designating effective voltage to be applied to a liquid crystal layer are preset for image data for each predetermined temperature range of the liquid crystal display element. The other RAM is used to store input image data. In the conversion table, the number of different voltage designation signals in a high-temperature range is set to be smaller than that of different voltage designation signals in a normal temperature range. The conversion circuit reads out voltage designation signals in accordance with a detection signal from the temperature detection circuit and image data, and outputs the signals to the signal electrode driver. With this operation, effective voltages corresponding to the voltage designation signals are applied to the liquid crystal layer, and a color display with excellent perceptibility can always be obtained regardless of the temperature of the liquid crystal display element.

    摘要翻译: 温度检测电路和两个RAM连接到转换电路,用于将图像数据转换成电压指定信号,并将信号输出到信号电极驱动器。 温度检测电路检测液晶显示元件的温度作为影响液晶分子的行为的条件之一。 一个RAM用于存储转换表,其中为液晶显示元件的每个预定温度范围的图像数据预设了用于指定施加到液晶层的有效电压的电压指定信号。 另一个RAM用于存储输入图像数据。 在转换表中,将高温范围内的不同电压指定信号的数量设定为小于在正常温度范围内的不同电压指定信号的数量。 转换电路根据来自温度检测电路的检测信号和图像数据读出电压指定信号,并将该信号输出到信号电极驱动器。 通过该动作,对液晶层施加与电压指定信号对应的有效电压,无论液晶显示元件的温度如何,都能够始终获得具有良好感知性的彩色显示。

    Method and apparatus for detecting through-hole voids in multi-layer
printed wiring board
    4.
    发明授权
    Method and apparatus for detecting through-hole voids in multi-layer printed wiring board 失效
    用于检测多层印刷电路板中的通孔空隙的方法和装置

    公开(公告)号:US4930890A

    公开(公告)日:1990-06-05

    申请号:US210097

    申请日:1988-06-22

    摘要: A method and apparatus for detecting through-hole voids in a multi-layer printed circuit board. The through-hole is formed with an electrical conductor for interconnecting wiring patterns of upper layers and wiring patterns of lower layers of the printed wiring board and is illuminated with a beam having a wavelength falling within a specified wavelength band capable of exciting an luminescent beam from a layer material. The layer material is exposed by a through-hole void in the through-hole of the printed wiring board. The luminescent beam excited by the illumination beam impinging upon the layer material by way of the through-hole void in the through-hole is focussed by means of a focussing optical system and a photoelectric converter. The photoelectric converter converts the luminescent beam into an electrical signal. The presence of a through-hole void is indicated by the electrical signal.

    摘要翻译: 一种用于检测多层印刷电路板中的通孔空隙的方法和装置。 通孔形成有电导体,用于互连印刷线路板的上层的布线图案和下层的布线图案,并且用波长落在能够激发发光束的规定波长带内的波长照射 一层材料。 层状材料通过印刷电路板的通孔中的通孔空洞露出。 由通过通孔中的通孔空穴撞击在层材料上的照明光束激发的发光束通过聚焦光学系统和光电转换器聚焦。 光电转换器将发光束转换为电信号。 电气信号表示通孔空隙的存在。

    Electrophotographic printer with light micro-shutters
    5.
    发明授权
    Electrophotographic printer with light micro-shutters 失效
    带微型快门的电子照相打印机

    公开(公告)号:US4763142A

    公开(公告)日:1988-08-09

    申请号:US903592

    申请日:1986-09-03

    摘要: An image forming apparatus has a light source, and one or more liquid crystal units for forming a latent image on the photosensitive drum by controlling the passage of the light from the light source between the light source and the drum. The liquid crystal units have a plurality of shutter arrays arranged with a plurality of microshutters. The microshutter has a miniature region for controlling the passage of the light, and the regions are different at every microshutter for forming the individual shutter arrays.

    摘要翻译: 图像形成装置具有光源和一个或多个液晶单元,用于通过控制来自光源和光源之间的光源的光的通过来在感光鼓上形成潜像。 液晶单元具有布置有多个微型显示器的多个快门阵列。 微型切割器具有用于控制光的通过的微小区域,并且每个微型摆动区域在形成各个快门阵列时是不同的。