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公开(公告)号：US3779751A
公开(公告)日：1973-12-18
申请号：US3779751D
申请日：1971-09-13
Applicant: XEROX CORP
Inventor： HAAS W , FLANNERY J , MECHLOWITZ B , ADAMS J
Abstract: Liquid crystalline compositions having a cholesteric mesophase are disclosed. The compositions have extended mesomorphic ranges and are stable at relatively low temperatures. Uses of the novel compositions in various electro-optic applications are also disclosed.
Abstract translation: 公开了具有胆甾型中间相的液晶组合物。 组合物具有延伸的介晶范围并且在相对低的温度下是稳定的。 还公开了在各种电光应用中的新型组合物的用途。
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2.发明授权
公开(公告)号：US3718380A
公开(公告)日：1973-02-27
申请号：US3718380D
申请日：1971-08-05
Applicant: XEROX CORP
CPC classification number: G02F1/132 , G02F1/13731 , Y10S359/90
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，以及其中电场诱导转变成像液晶性成像的成像系统。
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3.发明授权
公开(公告)号：US3854751A
公开(公告)日：1974-12-17
申请号：US34949773
申请日：1973-04-09
Applicant: XEROX CORP
CPC classification number: G02F1/13731 , G02F1/133
Abstract: A liquid crystalline composition having optical uniaxiality is driven by electrical fields to alternate its optic axis between substantially normal positions of orientation. Imaging at speeds greater than 500 cycles per second are achieved with enhanced imaging contrast.
Abstract translation: 具有光学单轴性的液晶组合物由电场驱动以将其光轴交替在取向的基本正常位置之间。 通过增强的成像对比度实现每秒钟超过500个循环的成像。
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4.发明授权
公开(公告)号：US3816113A
公开(公告)日：1974-06-11
申请号：US17973171
申请日：1971-09-13
Applicant: XEROX CORP
Inventor： HAAS W , FLANNERY J , MECHLOWITZ B , ADAMS J
Abstract: Compositions formed from nematic liquid crystalline compounds are disclosed. The novel compositions of the invention have extended nematic mesomorphic temperature ranges which are significantly larger than those of the individual components of the compositions and are stable at relatively low temperatures.
Abstract translation: 公开了由向列型液晶化合物形成的组合物。 本发明的新型组合物具有延伸的向列型介晶温度范围，其显着大于组合物的各组分，并且在较低温度下是稳定的。
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5.发明授权Imaging system with an aligned liquid crystal image contrasted by a non-aligned liquid crystal background 失效具有非对准液晶结构对比的具有对准的液晶图像的成像系统
公开(公告)号：US3843230A
公开(公告)日：1974-10-22
申请号：US41457173
申请日：1973-11-09
Applicant: XEROX CORP
Inventor： HAAS W , ADAMS J , MECHLOWITZ B
IPC: G02F1/1337 , G02F1/16
CPC classification number: G02F1/133703 , Y10S359/90
Abstract: Novel liquid crystalline compositions containing an advantageous aligning agent resin, which causes said compositions, upon application to any suitable substrate to spontaneously align or to have a greater tendency to become aligned in an orientation wherein major axes of the molecules comprising liquid crystalline material are substantially perpendicular to the plane of the subtrate. Such liquid crystalline compositions are particularly suited for use in phase transition systems wherein a film comprising cholesteric liquid crystalline material having the tendency to align is transformed to the nematic liquid crystalline state by the application of electrical fields of sufficient field strengths. Such compositions are also used in other liquid crystalline imaging systems making use of differently aligned portions of liquid crystalline films.
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Patent Agency Ranking
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
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。
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7.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
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。
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8.发明授权
公开(公告)号：US3848965A
公开(公告)日：1974-11-19
申请号：US40738573
申请日：1973-10-17
Applicant: XEROX CORP
CPC classification number: G02F1/13718
Abstract: A method wherein an optically negative liquid crystal film or layer which initially does not substantially scatter incident monochromatic light is caused to diffusely scatter the incident light by means of relatively small pitch changes effected in the optically negative material. An imaging system wherein an optically negative liquid crystal film is imaged in the desired image configuration by the above-described method is also disclosed.
Abstract translation: 通过在光学负极材料中实现的相对较小的间距变化，使得最初基本上不散射入射单色光的光学阴性液晶膜或层扩散散射入射光。 还公开了一种通过上述方法将光学负极液晶膜成像为期望的图像配置的成像系统。
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公开(公告)号：US3806230A
公开(公告)日：1974-04-23
申请号：US20778771
申请日：1971-12-14
Applicant: XEROX CORP
Inventor： HAAS W
IPC: C09K19/54 , C09K19/58 , G02F1/13 , G02F1/137 , G02F1/139 , G03G5/14 , G03G7/00 , G09F9/30 , G02F1/16
CPC classification number: C09K19/586 , C09K19/54 , G02F1/13 , G02F1/13718 , G03G5/14 , G03G7/00 , Y10S359/90
Abstract: Liquid crystalline compositions possessing the optical properties of the cholesteric liquid crystalline mesophase and comprising a nematic liquid crystalline material and at least one optically active non-mesomorphic material have optical storage capabilities when utilized in an imaging process wherein an electrical field is applied across a layer of the composition. An image formed in this manner is retained when the electric field or current is removed from the liquid crystalline imaging layer. Typically the image is scattering, contrasting with the clear unaffected region not subjected to the electrical field, and can be erased with high frequency A.C. fields.
Abstract translation: 具有胆甾型液晶中间相的光学性质的液晶组合物，其包含向列型液晶材料和至少一种光学活性非介晶材料，当用于成像过程时具有光学存储能力，其中电场跨越一层 组成。 当从液晶成像层去除电场或电流时，保持以这种方式形成的图像。 通常，图像散射，与未受电场影响的清晰的未受影响区域形成对比，并且可以用高频率的A.C.场来擦除。
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公开(公告)号：US3744920A
公开(公告)日：1973-07-10
申请号：US3744920D
申请日：1971-01-06
Applicant: XEROX CORP
CPC classification number: G02F1/1313 , G01N21/91
Abstract: A system for identifying the presence of physical surface patterns and/or areas in a surface which have different electrical conductivity characteristics from those of adjacent areas of the same surface. The system utilizes the optical characteristics of liquid crystal films having optically negative properties.
Abstract translation: 用于识别表面中存在与同一表面的相邻区域具有不同导电特性的物理表面图案和/或区域的系统。 该系统利用具有光学负性质的液晶膜的光学特性。
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