• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A liquid crystal display module consists of two substrate carriers with transparent conductive coatings which enclose a liquid crystal between them. A light storage layer at the rear of the module consists of a phosphor with a long afterglow between the polarisation filter and the metal bronze or glass reflector. This results in a clear display of figures, letters or symbols without double images caused by parallax, even in complete darkness, without requiring another source of light. The volume is merely increased by one optical storage layer and the module is suitable for series prodn.
    公开号:SU892400A1
    申请号:SU762361802
    申请日:1976-05-10
    公开日:1981-12-23
    发明作者:Дунманн Юрген
    申请人:Феб Верк Фюр Фернзеэлектроник (Инопредприятие)；
    IPC主号:
    专利说明:

    (54) LIQUID-CRYSTAL DEVICE FOR INDICATING NUMBERS, SIGNS
    I
    The invention relates to an optoelectricity, in particular, to devices for the in-depth display of information in the form of numbers, characters or symbols.
    A liquid-crystal indicator device designed to indicate numbers, letters, symbols with the ability to display both in the presence of external illumination and in the dark, contains two transparent substrates with transparent electrodes on the inner sides, between which a liquid-crystalline compound is located. Sveta. One of the electrodes is divided into segments, when applying control voltages to which you can create an image of a letter or number that is visible when there is external illumination. In order to ensure that, in the dark, an electroluminescent substance is introduced into the composition of the liquid-crystalline material, which, under the action of the applied voltage, is luminous
    reading information in the dark fl.
    The disadvantages of the known technical solution are the low intensity of light emitted by the electroluminescent substance, since its percentage in the layer of liquid crystal (LCD) could not be great, as well as the short service life, because LCD and electroluminescent substance are usually
    10 poorly compatible.
    The closest to the proposed technical essence and the achieved effect is a liquid crystal display device containing two
    权利要求:
    Claims (2)
    [1]
    ts are transparent substrates with electrically conducting layers on the inner sides between which the layer of liquid crystal is placed. On the back side of the substrates a layer of light-accumulating material — an electroluminescent layer — is placed, and electrodes are provided for connecting control voltages to the electroluminescent layer. When the voltage of the 38 voltages is applied to the LCD layer, it becomes possible to display letters, numbers and symbols in the presence of external illumination, when voltages are applied to the electroluminescent layer, it is possible to display information in complete darkness. The simultaneous and independent control of both layers is possible, and thus, the known device possesses wide operational characteristics with the TKaMtt f 2, the disadvantage of the known device. is the technological complexity of the manufacture of such a device, due to the need to manufacture two sets of electrodes - one to control the QC layer and the other to control the electroluminescent layer. Also for; Controlling the electroluminescent layer requires a sufficiently high voltage to be applied and therefore the power consumption for controlling such a device is considerable. The purpose of the invention is to improve the manufacturability of manufacturing liquid crystal display devices that provide the ability to read information both in the presence of external illumination and in complete darkness. The delivered chain is achieved by the fact that in the liquid crystal display device, there are two substrates with a liquid crystal substance equipped with transparent electrically conductive layers between them, the luminescent light layer is provided on the back side of the liquid crystal device, the latter is made in the form of a mixture of a luminescent material with a high afterglow and reflective material. Moreover, as a preferred embodiment, metallic bronze and / or glass reflectors are proposed as a reflective layer. FIG. 1 shows a liquid crystal display device equipped with a single light-accumulating layer; in fig. 2 - a device equipped with a light-acoustic sing and reflector. The liquid crystal indicator device (FIG. 1) contains front 1 and back 2 transparent substrates between which liquid crystal 3 is placed. Polarizers 4 and 5 and the structure of the LCD layer 3 are mutually arranged so that in the excited state the indicator indicator part is It is black 0 on a light background or vice versa, depending on the relative position of polarizers 4 and 5 ,. The light accumulating and reflecting layer 6 is located on the back side of the indicator. It is made, for example, from a mixture of zinc sulphide, medc and metallic bronze. After excitation of the light accumulating layer 6 by the source of external illumination — ultraviolet, daylight or artificial light, the display of numbers, signs or symbols in the dark is possible due to the light emitted by the light accumulating layer 6. The indicator device (FIG. 2) additionally contains a reflector 7, and the light accumulating layer is made For example, from a mixture of copper zinc oxide. The reflector 7, the light accumulating layer 6 and the polarizer 5 are glued together to the substrate 2 with a polyacrylate solution. When the light accumulative layer 6 is illuminated from an external illumination source, the indication in the dark also becomes possible. The technical and economic effect of the invention is to simplify the manufacturing technology of indicator devices that provide indications both in external lighting and in the dark. Claim i. A liquid crystal display device for displaying phra signs or symbols comprising two substrates with a liquid crystal substance provided between them with transparent electrically conductive layers, with a light-accumulating luminescent layer on the back side of the liquid crystal device, characterized in that The light accumulating layer is made in the form of a mixture of a luminescent material with a high afterglow and a reflective material.
    [2]
    2. A device pop, 1, characterized in that metal bronzes are used as the reflective layer, in / shga glass reflectors. Information sources, . taken into account in examination 1, Lime of the Academy of Sciences of the Armenian SSR, ser. Physics, 1973, No. 8, p. 309-311. 2, Patent of France No. 219О307, cl. 5 09P 13/00, 1974.
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    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE2618902A1|1976-12-30|
    DD120724A1|1976-06-20|
    CH601825A5|1978-07-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO1999006884A1|1997-08-04|1999-02-11|Optiva, Inc.|Liquid crystal display|
    RU2468286C2|2008-04-28|2012-11-27|Шарп Кабусики Кайся|Lighting device, display device and tv set|
    DE2706375C3|1977-02-15|1982-08-26|Siemens AG, 1000 Berlin und 8000 München|Display arrangement with a light valve device, in particular a liquid crystal cell|
    DE2746818A1|1977-10-18|1979-04-26|Siemens Ag|DISPLAY UNIT WITH A PASSIVE ELECTRO-OPTICAL DISPLAY|
    DE2835347A1|1978-08-11|1980-02-28|Fraunhofer Ges Forschung|DISPLAY DEVICE WITH AN ELECTROOPTIC LIGHT VALVE|
    DE2915847C2|1978-09-29|1986-01-16|Nitto Electric Industrial Co., Ltd., Ibaraki, Osaka|Electro-optically activated display|
    FR2573232B1|1984-11-13|1987-01-09|Aerospatiale|ILLUMINATED ULTRAVIOLET LIGHT DISPLAY DEVICE|
    US4668049A|1984-12-18|1987-05-26|Itt Corporation|Illumination for a scattering type liquid crystal display|
    JPS62273410A|1986-04-04|1987-11-27|Sherwood Medical Co|Portable electronic patient monitor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD186583A|DD120724A1|1975-06-12|1975-06-12|
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