• 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:
    An electrochromic device having an electrochromic layer of persistent electrochromic material such as tungsten oxide, and an electrolyte layer and a counter electrode which comprises an oxidizing agent which has oxidizing electrode potential more negative than the electrochromic layer to provide a stored charge for erasing color from the electrochromic layer, and to increase the emf of the charge for the erase function. Examples of suitable oxidizing agents are manganese dioxide and chromic oxide.
    公开号:SU1022669A3
    申请号:SU813318204
    申请日:1981-07-17
    公开日:1983-06-07
    发明作者:Доменико Джиглиа Роберт
    申请人:Американ Цианамид Компани (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to information display systems based on the robust electrochromism of inorganic materials. An electrochromic device BOf containing a film of electrochromic tungsten oxide deposited as segments on a transparent current is applied, and the film of tungsten oxide itself is covered with a layer of electrolyte based on a polymer containing a sulfonic acid group reading the electrode of the device is made of carbon-paper sheet. This device is a mediocre electro-optical characteristic. The closest to the proposed one is an electrochromic device containing a film of a stable electrochromic inorganic compound, an electrode layer on one side of this film, an electrolyte layer on the opposite side and a conductive layer of the reading electrode on the opposite side of the electrolyte layer 2. The disadvantages of this device are degraded performance and complexity. The purpose of the invention is to improve the performance and simplify the structure. This goal is achieved by the fact that in an electrochromic device containing a film of a stable electrochromic inorganic compound, an electrode layer on one side of this film, an electrolyte layer on the opposite side of this film and a conductive layer of the reading electrode on the opposite side of the electrolyte layer, an electrochemically reversible oxidizing reagent, and the oxidizing agent is manganese dioxide or chromium. The drawing shows an electrochromic device. The device contains a film of a steady electrochromic inorganic compound, an electrode layer 2 on one side of this film, an electrolyte layer 3 on the opposite side of this film, and a conductive layer of the reading electrode 4 on the opposite side of the electrolyte layer 3. The electrochromic structure is placed between the substrates 5 and 6. The electrochromic device is connected via a switch to the current source 8 through the rheostat 9. When the switch 7 is set to positions 10, the electrochromic film is stained. By changing the switch from 10 to I, the bleaching of the electrochromic film is carried out. Into the carbon-based reading electrode 4, which is in contact with the electrolyte layer 3, oxidizing agents, such as manganese dioxide or chromium oxide, are introduced to increase the charge EMF accumulated inside the device, which increases the potential of the open circuit in a colored state. . The electrolyte layer 3 may be a liquid electrolyte solution, however, it is preferable to use a solid or viscous ion exchange resin layer, for example, described in V.Y. Example. The electrochromic device manufactured as described in 1} f has an electrochromic tungsten oxide film deposited in the form of segments forming a digital image system on the conductive electrode layer of the BECA glass plate. Throughout the tungsten oxide strip is coated with a layer of copolymer resin electrolyte, having sulfonic acid functional groups. The resin coating layer is slightly wetted by exposure to a humid atmosphere for several hours, and it contains titanium dooxy as a pigment. A charcoal sheet of a touch electrode is prepared as described in examples 1 and 2 Clj, with the exception that the sheet is not covered with an electrochromic solution w6. A conductive carbon sheet is pressed between a layer of electrolyte resin of a tungsten oxide electrode and a substrate of HESA glass of a reading electrode. The fabricated device has almost the same structure;, which is shown in the drawing. The second device is prepared in the same way, with the exception that an oxidizing agent consisting of manganese dioxide is introduced into a suspension of carbon fibers and a binder prepared for the production of a carbon paper electrode. The mixture contains 78 ml of acrylic fiber suspension, 0.88 ml of 0.2% aqueous solution Magniflok 1563-C, 0.44 ml of 10% Surfonic En-120 in water, 0.33, ml of suspension 60% Teflon 30-Bi , 1.60 g of Carbot Ex-C 72-Ar carbon powder, 320 ml of de-ionized water. This suspension is thoroughly mixed and poured onto a grid for paper production in order to remove the carbon-paper electrode that is different from the paper electrode of the first device only the content of manganese dioxide. Both devices are tested by applying a direct current potential across the electrodes. (Moreover, the tungsten oxide side is negative in order to obtain the same desired degree of staining in the electrochromic layer of each device. To obtain the same staining in a device containing an oxidizing agent, or a slightly higher voltage or a slightly longer period for dyeing. The first colored device has the measured open circuit potential B, and the second colored device. which contains manganese dioxide, has a potential of times (1 closed circuit equal to 0.92 V. When the electrodes of each device are short-circuited through an external circuit, the first staining erases approximately an irregular 1.0–1.2 s, while in the device, containing manganese dioxide in the reading electrode, the staining is erased only after 0.6 s. When performing the erase function with an applied voltage, an additional increase in erasure rate is realized. Manufactured in accordance with this example, the devices withstand 5 million switching cycles (staining-erasing) without failure and without a substantial ear; P r and m ep2. A sheet of carbon paper reading electrode is prepared as described in examples 1 and 2 with the exception that the sheet is not covered with a WO5 blend of hydrochromic. Dissolve 1 g of trioxide in 50 ml of deionized water. This solution is coated on one side of the reading electrode and heated to 70 ° C for 1 hour. A degree of surface coating of chromium trioxide of 4 mg / cm is obtained. Devices made in accordance with this example, withstand 1 ml. switching cycles (oitf, rashivaiee - erasure) without failure and without significant deterioration in quality. .
    权利要求:
    Claims (3)
    [1]
    1. ELECTROCHROMIC DEVICE, comprising a film of a stable electrochromic inorganic compound, an electrode layer on one side of this film, an electrolyte layer on the opposite side of this film, and a conductive layer of a read electrode on the opposite side of the electrolyte layer, characterized in that, in order to improve performance and simplify structure, the layer of the reading electrode includes an electrochemically reversible oxidizing reagent.
    [2]
    2. The device according to claim 1, with the fact that the oxidizing reagent is manganese dioxide.
    [3]
    3. The device pop. 1, characterized in that the oxidizing reagent is chromium oxide.
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    US5215821A|1993-06-01|Solid-state electrochromic device with proton-conducting polymer electrolyte and Prussian blue counterelectrode
    US4205903A|1980-06-03|Writing/erasing technique for an electrochromic display cell
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    Inaba et al.1995|Electrochromic display device of tungsten trioxide and prussian blue films using polymer gel electrolyte of methacrylate
    同族专利:
    公开号 | 公开日
    EP0044392B1|1984-08-01|
    KR850000135B1|1985-02-27|
    EP0044392A1|1982-01-27|
    AT8822T|1984-08-15|
    DE3165215D1|1984-09-06|
    JPS5756825A|1982-04-05|
    IN153478B|1984-07-21|
    US4344674A|1982-08-17|
    KR830006712A|1983-10-06|
    IL62930A|1984-12-31|
    IL62930D0|1981-07-31|
    BR8103614A|1982-03-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8858837B2|2005-08-19|2014-10-14|Lg Chem, Ltd.|Electrolyte comprising eutectic mixture and electrochemical device using the same|US3827784A|1971-12-09|1974-08-06|American Cyanamid Co|Simple, bonded graphite counter electrode for electrochromic devices|
    US3978007A|1971-12-09|1976-08-31|American Cyanamid Company|Simple, bonded graphite counter electrode for EC devices|
    CH594263A5|1975-11-29|1977-12-30|Ebauches Sa|
    US4174152A|1978-02-13|1979-11-13|American Cyanamid Company|Electrochromic devices with polymeric electrolytes|
    JPS6326372B2|1978-07-20|1988-05-30|Matsushita Electric Ind Co Ltd|
    JPS5540751A|1978-09-19|1980-03-22|Matsushita Electric Ind Co Ltd|Device for electrochromic display|
    JPS5811612B2|1979-11-06|1983-03-03|Nippon Kokuen Kogyo Kk|JPS60216333A|1984-04-12|1985-10-29|Asahi Glass Co Ltd|Electrochromic display element|
    US4889414A|1984-08-21|1989-12-26|Eic Laboratories, Inc.|Light modulating device|
    US5241411A|1987-07-02|1993-08-31|Saint-Gobain Vitrage|Electrochromic variable transmission glazing|
    FR2629222B1|1988-03-25|1992-04-30|Saint Gobain Vitrage|VARIABLE TRANSMISSION GLAZING OF THE ELECTROCHROME TYPE|
    US4960323A|1988-10-05|1990-10-02|Ford Motor Company|Method for maintaining the electrochromic activity of an electrochromic material|
    US7450292B1|2003-06-20|2008-11-11|Los Alamos National Security, Llc|Durable electrooptic devices comprising ionic liquids|
    US7372610B2|2005-02-23|2008-05-13|Sage Electrochromics, Inc.|Electrochromic devices and methods|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US06/157,612|US4344674A|1980-07-18|1980-07-18|Electrochromic display device with improved erasing characteristic|
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