利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.02 秒)

    Liquid crystal devices
    4.
    发明公开
    Liquid crystal devices 失效
    液晶器件

    公开(公告)号：EP0098070A3

    公开(公告)日：1984-12-27

    申请号：EP83303373

    申请日：1983-06-10

    申请人： The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and

    发明人： Waters, Colin Martin ,  Raynes, Edward Peter

    IPC分类号： G02F01/137 ,  G02F01/133

    CPC分类号： G02F1/13725 ,  C09K19/0208 ,  C09K19/60 ,  G02F1/13475

    摘要： A liquid crystal device comprises a layer of long pitch cholesteric liquid crystal material incorporating a pleochroic dye. The layer is contained between two cell walls surface treated to align liquid crystal molecules in a tilted homogeneous structure. The surface alignment and natural pitch of the cholesteric material are matched to provide a progressive molecular twist of between π and 2π, preferably about 3π/2, with a uniform tilt direction. The ratio of natural pitch P divided by thickness d of the liquid crystal layer is arranged to lie between 0.5 and 1.0, with a value of d less than 20 µm. Both low tilt and high tilt surface alignment may be used separately or in combination. Polarisers may be used to enhance contrast between ON and OFF states. The device has a sharp transmission/voltage characteristic which enables it to be used in large multiplex addressed matrix displays.

    摘要翻译： 液晶装置包括掺入多色性染料的长间距胆甾型液晶材料层。 该层包含在经过表面处理的两个单元壁之间，以将液晶分子排列成倾斜的均匀结构。 胆甾醇材料的表面排列和天然沥青相匹配，以均匀倾斜方向提供介于π和2π之间，优选约3π/ 2的递进分子扭转。 液晶层的自然间距P除以厚度d的比值被设置在0.5和1.0之间，其值d小于20μm。 低倾斜和高倾斜表面对齐可以分开使用或组合使用。 偏振器可用于增强ON和OFF状态之间的对比度。 该器件具有尖锐的传输/电压特性，可用于大型多路复用寻址矩阵显示器。

    Touch sensitive switches
    5.
    发明公开
    Touch sensitive switches 失效
    触摸敏感开关

    公开(公告)号：EP0079711A3

    公开(公告)日：1984-10-03

    申请号：EP82305767

    申请日：1982-10-29

    申请人： The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and

    发明人： Hilsum, Cyril ,  Raynes, Edward Peter

    IPC分类号： H03K17/96 ,  H03K17/975 ,  G02F01/13

    CPC分类号： H03K17/962

    摘要： A touch sensitive switch comprises a liquid crystal cell (1, 20) and means (Figure 4, or 8) for measuring capacitive changes when the cell is deformed by touch. The cell (1) comprises a layer (8) of a liquid crystal material between slides (2, 3) bearing electrodes (5, 6). Capacitive changes are detected for example by a comparator (Figure 4) or by a bridge circuit (Figure 8) which includes one or more cells (W, X, Y, Z). Touching one cell (W, X, Y, Z) unbalances the bridge. The area of cell that is touched may be coincident with (Figure 1) or separate from (Figure 3) a display area. For some types of cell extra sensitivity is achieved by maintaining a voltage across the cell between a critical and saturation value (Figure 5).

    Autostereoscopic display
    8.
    发明授权
    Autostereoscopic display 失效
    自动立体显示设备

    公开(公告)号：EP0721132B1

    公开(公告)日：2002-09-11

    申请号：EP95309180.8

    申请日：1995-12-18

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Woodgate, Graham John ,  Harrold, Jonathan ,  Ezra, David ,  Omar, Basil ,  Raynes, Edward Peter

    IPC分类号： G02B27/26 ,  G02B27/22 ,  H04N13/00 ,  G02F1/1335

    CPC分类号： G02F1/133528 ,  G02B27/26 ,  G02F1/13362 ,  G02F2001/133565 ,  G02F2001/133638 ,  G02F2413/09 ,  H04N13/286 ,  H04N13/305 ,  H04N13/31 ,  H04N13/32 ,  H04N13/324 ,  H04N13/337 ,  H04N13/341 ,  H04N13/346 ,  H04N13/349 ,  H04N13/361 ,  H04N13/376 ,  H04N13/378 ,  H04N13/38 ,  H04N13/398

    摘要： A display device comprises a source 1 of light of a first polarization, a source of light of a second polarization different from the first polarization, an optical system arranged to image the light emitted by the light sources through a spatial light modulator (SLM) to produce an image of the source of light of the first polarization at a first viewing zone and an image of the second source of light at a second viewing zone, the SLM including a plurality of picture elements arranged to modulate the light emitted by the sources of light, and a plurality of polarization adjusting means each being optically aligned with at least one respective picture element, the polarization adjusting means comprising a first group arranged to permit the transmission of light of the first polarization and substantially prevent transmission of light of the second polarization, and a second group arranged to permit the transmission of light of the second polarization and substantially prevent transmission of light of the first polarization such that the image on the SLM which can be viewed from the first viewing zone is that of the picture elements optically aligned with the polarization adjusting means of the first group and the image which can be viewed from the second viewing zone is that of the picture elements optically aligned with the polarization adjusting means of the second group. The polarization adjusting means may comprise an array of polarizing elements 5a, 5b, or alternatively may comprise an array of wave plates 33. The optical system may comprise a lens 3 or array of lenses provided between the light sources 1, 2 and the SLM 4. A spatial light modulator which may be used in 3D displays of stereoscopic or autostereoscopic type comprises substrates (19, 21) between which is disposed a liquid crystal layer (20). The layer comprises two sets of pixels (12, 13) for displaying left and right eye images. A pixellated polarisation adjustor (31, 32; 33, 34) is disposed between one of the substrates (21) and the liquid crystal layer (20) so as to minimise parallax effects. The pixels (12, 13) of the liquid crystal layer (20) are operated in the same mode i.e. all normally black or all normally white.

    Liquid crystal display element and device
    9.
    发明公开
    Liquid crystal display element and device 失效
    Flüssigkristallanzeige-Element und -Vorrichtung

    公开(公告)号：EP0706075A1

    公开(公告)日：1996-04-10

    申请号：EP95306982.0

    申请日：1995-10-03

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Raynes, Edward Peter ,  Bonnet, Paul

    IPC分类号： G02F1/141

    CPC分类号： G02F1/141 ,  G02F1/133345 ,  G02F1/133371 ,  G02F2203/30

    摘要： A liquid crystal display element (10a, b, c, 30a, b, c, 56) comprises first and second electrodes (18, 20, 36, 38) and a bistable ferroelectric liquid crystal material (22, 44) therebetween. The display element (10a, b, c, 30a, b, c, 56) defines a plurality of sub-elements (24a, b, c, 46a, b, c, 50, 52, 54), the liquid crystal material (22, 44) of each of which is switchable between its stable states upon the application of a voltage exceeding a predetermined level to the first and second electrodes (18, 20, 36, 38). The liquid crystal material (22, 44) has a minimum in its response time - voltage characteristic. In one embodiment, the liquid crystal material (22) is of stepped thickness so that the sub-elements (24a, b,c) have different liquid crystal layer thicknesses.

    摘要翻译： 液晶显示元件（10a，b，c，30a，b，c，56）包括第一和第二电极（18,20,36,38）和双稳态铁电液晶材料（22,44）。 显示元件（10a，b，c，30a，b，c，56）限定多个子元件（24a，b，c，46a，b，c，50,52,54），液晶材料 其特征在于，当所述第一和第二电极（18,20,36,38）施加超过预定水平的电压时，所述第二电极可在其稳定状态之间切换。 液晶材料（22,44）的响应时间 - 电压特性最小。 在一个实施例中，液晶材料（22）具有阶梯状厚度，使得子元件（24a，b，c）具有不同的液晶层厚度。