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490 条记录 (耗时 0.011 秒)

    High contrast light shutter system
    81.
    发明公开
    High contrast light shutter system 失效
    高对比度快门系统

    公开(公告)号：EP0463723A3

    公开(公告)日：1992-06-10

    申请号：EP91303983.0

    申请日：1991-05-02

    申请人： TEKTRONIX INC.

    发明人： Bos, Philip J.

    IPC分类号： G02F1/1335

    CPC分类号： G02F1/13363 ,  G02F1/1395 ,  G02F2001/133638 ,  G02F2202/40 ,  G02F2413/01 ,  G02F2413/08

    摘要： A light shutter system (10) incorporates a liquid crystal cell (12) operating as a variable optical retarder to selectively produce opaque and transmissive optical states corresponding to the respective first and second amounts of system optical retardation. The cell switches between a residual amount of retardation and an increased amount that equals the sum of half-wave retardation and the amount of residual retardation to provide a shutter system whose system retardation switches between zero retardation and half-wave retardation and thereby produces opaque and transmissive states with an optimal contrast ratio. The cell is positioned between a linear polarizing filter (14) and an elliptical analyzer (16), the latter including a linear polarizing filter (20) and an optical retarder (18) of fixed value. The transmission axis of the linear polarizing filters are angularly displaced relative to a projection of the optic axes of the cell by an amount that provides maximum light extinction in the opaque state. Maximum output light transmission in the transmission state is achieved by establishing for the cell an optical thickness that exceeds half-wave retardation by an additional amount equal to the residual retardation. Other preferred embodiments that provide equivalent performance are described.

    High contrast light shutter system
    83.
    发明公开
    High contrast light shutter system 失效
    Lichtventilvorrichtung mit hohem Kontrast。

    公开(公告)号：EP0463723A2

    公开(公告)日：1992-01-02

    申请号：EP91303983.0

    申请日：1991-05-02

    申请人： TEKTRONIX INC.

    发明人： Bos, Philip J.

    IPC分类号： G02F1/1335

    CPC分类号： G02F1/13363 ,  G02F1/1395 ,  G02F2001/133638 ,  G02F2202/40 ,  G02F2413/01 ,  G02F2413/08

    摘要： A light shutter system (10) incorporates a liquid crystal cell (12) operating as a variable optical retarder to selectively produce opaque and transmissive optical states corresponding to the respective first and second amounts of system optical retardation. The cell switches between a residual amount of retardation and an increased amount that equals the sum of half-wave retardation and the amount of residual retardation to provide a shutter system whose system retardation switches between zero retardation and half-wave retardation and thereby produces opaque and transmissive states with an optimal contrast ratio. The cell is positioned between a linear polarizing filter (14) and an elliptical analyzer (16), the latter including a linear polarizing filter (20) and an optical retarder (18) of fixed value. The transmission axis of the linear polarizing filters are angularly displaced relative to a projection of the optic axes of the cell by an amount that provides maximum light extinction in the opaque state. Maximum output light transmission in the transmission state is achieved by establishing for the cell an optical thickness that exceeds half-wave retardation by an additional amount equal to the residual retardation. Other preferred embodiments that provide equivalent performance are described.

    摘要翻译： 光闸系统（10）包括作为可变光学延迟器操作的液晶单元（12），以选择性地产生对应于相应的第一和第二系统光学延迟量的不透明和透射光学状态。 电池在剩余量的延迟和增加的量之间切换，其等于半波延迟和剩余延迟量之和，以提供系统延迟在零延迟和半波延迟之间切换的快门系统，从而产生不透明和 具有最佳对比度的透射状态。 单元位于线性偏振滤光器（14）和椭圆分析仪（16）之间，后者包括线性偏振滤光器（20）和具有固定值的光学延迟器（18）。 线性偏振滤光器的透射轴相对于单元的光轴的投影以不透明状态提供最大光消光的量角位移。 通过为单元建立超过半波延迟的光学厚度等于残余延迟的附加量来实现透射状态下的最大输出光透射。 描述了提供等效性能的其它优选实施例。

    Transient state liquid crystal image bar with contrast enhancement
    85.
    发明公开
    Transient state liquid crystal image bar with contrast enhancement 失效
    StabförmigesÜbergangszustands-FlüssigkristallabbildungselementmiterhöhtemKontrast。

    公开(公告)号：EP0272820A2

    公开(公告)日：1988-06-29

    申请号：EP87310601.7

    申请日：1987-12-02

    申请人： XEROX CORPORATION

    发明人： Dir, Gary A. ,  Perregaux, Alain E.

    IPC分类号： G02F1/133

    CPC分类号： G02F1/1393 ,  G02F1/13363 ,  G02F2001/133531 ,  G02F2001/133638 ,  G02F2413/01

    摘要： A transient state liquid crystal image bar (12) having enhanced contrast with lower required driving voltage. The image bar is of the type having a nematic liquid crystal cell configured as a single array of dot shutters energizable by a single frequency voltage with crossed polarizer (14) and analyzer (15). The polarizing axis of the polarizer is at 45 degrees with the liquid crystal molecules (13) in their rest state. Thus, when all the image bar shutters are energized, it is in the non-transmission condition. For bursts of light to pass, the voltage to selected dot shutters is interrupted and reapplied. In one embodiment, the improvement is achieved by an optical compensator (28) or thin prism placed between the polarizer and the liquid crystal cell. In another embodiment, a quarter-wave plate is placed between the liquid crystal cell and the analyzer, with the analyzer being rotated about the image bar's optical axis a predetermined angle from its initial crossed position with respect to the polarizer, so that there is increased extinction of the light exiting from the liquid crystal cell, when the liquid crystal material is in its normally stable energized state.

    摘要翻译： 一种瞬态液晶影像棒（12），具有较低的所需驱动电压的对比度。 该图像棒是具有向列型液晶单元的类型，该向列型液晶单元被配置为具有由具有交叉偏振器（14）和分析器（15）的单个频率电压激励的点阵列的单个阵列。 偏振器的偏振轴在液晶分子（13）处于静止状态时为45度。 因此，当所有图像条快门都通电时，它处于非传输状态。 对于猝发的光通过，所选择的百叶窗的电压被中断并重新应用。 在一个实施例中，通过放置在偏振器和液晶单元之间的光学补偿器（28）或薄棱镜来实现改进。 在另一个实施例中，四分之一波片被放置在液晶单元和分析器之间，分析器围绕图像棒的光轴以相对于偏振器的初始交叉位置为预定角度旋转，使得增加 当液晶材料处于其正常稳定的通电状态时，从液晶单元出射的光的消光。

    Liquid crystal display
    86.
    发明公开
    Liquid crystal display 失效
    液晶显示器

    公开(公告)号：EP0142326A1

    公开(公告)日：1985-05-22

    申请号：EP84307677.9

    申请日：1984-11-07

    申请人： STC PLC

    发明人： Crossland, William Alden ,  Davey, Anthony Bernard

    IPC分类号： G02F1/137

    CPC分类号： G02F1/141 ,  G02F1/133528 ,  G02F2001/133638

    摘要： A ferro-electric liquid crystal display is adapted for viewing by reflection of light from the display. Each cell (12) of the display has a transparent front electrode (14) and a reflective back electrode (13). A polariser (17) is mounted in front of the display which is an odd number of quarter wavelengths in thickness. The polariser is orientated relative to the display to provide a maximum contrast ratio between the two cell conditions.

    摘要翻译： 铁电液晶显示器适合于通过来自显示器的光的反射来观看。 显示器的每个单元（12）具有透明的前电极（14）和反射后电极（13）。 偏振器（17）安装在显示器的前面，其厚度为奇数个四分之一波长。 偏振器相对于显示器取向以提供两种电池状态之间的最大对比度比。

    DISPLAY PANEL AND DISPLAY DEVICE
    90.
    发明公开
    DISPLAY PANEL AND DISPLAY DEVICE 审中-公开
    显示面板和显示设备

    公开(公告)号：EP3279719A1

    公开(公告)日：2018-02-07

    申请号：EP15832663.7

    申请日：2015-08-06

    申请人： BOE Technology Group Co., Ltd. ,  Hefei BOE Optoelectronics Technology Co., Ltd.

    发明人： PARK, Kuhyun

    IPC分类号： G02F1/1335 ,  G02F1/1362

    CPC分类号： G02F1/133528 ,  G02F1/133308 ,  G02F1/13338 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1362 ,  G02F1/1368 ,  G02F2001/133331 ,  G02F2001/133531 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2001/133638 ,  G02F2413/01 ,  H01L51/5281

    摘要： The embodiment of the present invention provides a display panel, which belongs to the field of display technology. The display panel comprises: a first polarizing layer, a display substrate, a second polarizing layer and a phase difference film; wherein the first polarizing layer is arranged at one side of the display substrate, and the first polarizing layer is arranged between the second polarizing layer and the display substrate, a transmission axis direction of the first polarizing layer and a transmission axis direction of the second polarizing layer are perpendicular to each other; the phase difference film is arranged between the first polarizing layer and the second polarizing layer. The present invention arranges a second polarizing layer and a phase difference film on the basis of the existing display panel, such that only the linearly polarized light whose polarizing direction is parallel to the transmission axis direction of the second polarizing layer can be emitted from the display panel, hence, the user whose viewing angle is perpendicular to the display panel can see the content in the display panel, while the user whose viewing angle is in other directions cannot see the contents in the display panel, thereby protecting the user's privacy effectively.

    摘要翻译： 本发明实施例提供一种显示面板，属于显示技术领域。 该显示面板包括：第一偏光层，显示基板，第二偏光层和相位差膜; 其中，所述第一偏振层布置在所述显示基板的一侧，并且所述第一偏振层布置在所述第二偏振层和所述显示基板之间，所述第一偏振层的透射轴方向和所述第二偏振层的透射轴方向 层彼此垂直; 相位差膜布置在第一偏振层和第二偏振层之间。 本发明在现有的显示面板的基础上设置第二偏振层和相差膜，使得只有偏振方向平行于第二偏振层的透射轴方向的线偏振光可以从显示器发射 因此，视角与显示面板垂直的用户可以看到显示面板中的内容，而视角在其他方向的用户无法看到显示面板中的内容，从而有效地保护了用户的隐私。