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    Liquid crystal display system
    1.
    发明授权
    Liquid crystal display system 失效
    液晶显示系统

    公开(公告)号：US3836230A

    公开(公告)日：1974-09-17

    申请号：US37419973

    申请日：1973-06-27

    Applicant: XEROX CORP

    Inventor： ADAMS J ,  BECKER J ,  HAAS W

    IPC: G09G3/18 ,  G02F1/00 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1347 ,  G09F9/35 ,  G09F9/46 ,  G02F1/16

    CPC classification number: G02F1/0063 ,  G02F1/13473 ,  G02F2201/343

    Abstract: A liquid crystal color display system which utilizes a plurality of films or layers of optically negative liquid crystalline materials as passive light discriminating screens is disclosed. The display system may be operated in a two color mode or a three color mode and has the capability of producing various color hues. The system lends itself to operation at very high frequency.

    Abstract translation: 公开了一种利用光学负极液晶材料的多个膜或层作为被动光鉴别屏的液晶彩色显示系统。 显示系统可以以双色模式或三色模式操作，并且具有产生各种色调的能力。 该系统适用于非常高的频率运行。

    Liquid crystal imaging system in which an electrical field is created by an x-y address system
    2.
    发明授权
    Liquid crystal imaging system in which an electrical field is created by an x-y address system 失效
    由X-Y地址系统产生的电场中的液晶成像系统

    公开(公告)号：US3718382A

    公开(公告)日：1973-02-27

    申请号：US3718382D

    申请日：1971-08-05

    Applicant: XEROX CORP

    Inventor： WYSOCKI J ,  MADRID R ,  HAAS W ,  ADAMS J ,  BECKER J

    IPC: G02F1/1339

    CPC classification number: G02F1/1339

    Abstract: A system transforming an optically negative liquid crystalline substance to an optically positive liquid crystalline mesophase by an applied electrical field, and an imaging system wherein the electrical field-induced transition images a liquid crystalline member.

    Abstract translation: 通过施加的电场将光学阴性液晶物质转化为光学阳性液晶中间相的系统，以及其中电场诱导的转变成像液晶元件的成像系统。

    Holding field to improve the image retention of a cholesteric nematic phase transition liquid crystal imaging system
    4.
    发明授权
    Holding field to improve the image retention of a cholesteric nematic phase transition liquid crystal imaging system 失效
    保留领域，以提高液相色谱相转移液晶成像系统的图像保持

    公开(公告)号：US3790251A

    公开(公告)日：1974-02-05

    申请号：US3790251D

    申请日：1971-11-29

    Applicant: XEROX CORP

    Inventor： WYSOCKI J ,  BECKER J ,  DIR G

    IPC: G09F9/30 ,  G02F1/133 ,  G02F1/137 ,  G02F1/16

    CPC classification number: G02F1/13731

    Abstract: An imaging system including an imaging layer comprising cholesteric liquid crystalline material in an electrical field capable of having field strengths in the cholesteric nematic phase transition field strength range or the Grandjean to focalconic texture transformation field strength range of the liquid crystalline imaging material. The imaging material is typically imaged by placing an imagewise phase-transition or texturetransformation inducing electrical field across a layer of imaging material. The present invention controls such an imaging system by maintaining a substantially uniform holding field across the entire surface of the imaging material, said holding field typically being maintained across the imaging material after it has been imaged. The holding field may be applied in the form of various phenomena. The particular type of holding field applied has field strengths below the cholesteric-nematic phase transition or the Grandjean to focal-conic texture transformation field strength thresholds of the imaging material. The imaging system, and especially its image memory and image relaxation characteristics are controlled by varying the strength of the holding field, and by applying field pulses in imagewise configuration to image the liquid crystalline imaging material, or by pulsing the field uniformly across the entire surface of the imaging material to field strengths above the phasetransition threshold or the texture transformation threshold, thereby enhancing the image already formed in the imaging material.

    Abstract translation: 一种成像系统，包括成像层，该成像层包括能够在胆甾型向列相变场强度范围内具有场强的电场中的胆固醇液晶材料，或液晶成像材料的Grandjean至焦圆锥形纹理变换场强范围。 成像材料通常通过在成像材料层上放置成像相变或纹理转换诱导电场来成像。 本发明通过在成像材料的整个表面上保持基本上均匀的保持场来控制这种成像系统，所述保持场通常在成像材料成像之后保持在成像材料上。 保持区域可以以各种现象的形式应用。 保持场的特定类型的场强低于胆甾型向列相变或Grandjean至成像材料的焦点锥体纹理变换场强阈值。 成像系统，特别是其图像存储器和图像松弛特性通过改变保持场的强度以及通过在成像构造中施加场脉冲来对液晶成像材料进行成像，或通过均匀地脉冲整个表面的场来控制 的场强大于相变阈值或纹理变换阈值，从而增强已经在成像材料中形成的图像。

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