| 摘要 |
PURPOSE:To eliminate the need for counter electrodes and to make the density of coloring constant by applying a voltage between plural pieces of conductive films provided on a transparent substrate to oxidize the conductive films thereby coloring the electrodes of the electrochemical coloring material on the conductive films. CONSTITUTION:An upper substrate 1 of transparent glass and a lower substrate 2 of a recessing shape are combined to provide a cell space. An electrolyte 7 of a lithium perchlorate soln. or the like is packed in the cell space. Plural pieces of transparent conductive films 4 such as indium oxide are provided on the inner side surface in the cell of the substrate 1 and electrodes 5 of an electrochemical coloring material such as tungsten oxide are formed thereon, whereby an intended electrochromic display device is obtained. In the stage of driving, a voltage by which oxidation reaction is effected in the films 4 is applied between plural pieces of the transparent conductive films. Thus the cations in the electrolyte 7 and the electrons from the films 4 are implanted into the electrodes 5, whereby the electrochemical coloring material is colored and displaying is performed. |
