| 摘要 |
PURPOSE:To realize lowering of drive voltage and speed-up of response and to prevent deterioration of function in a dry state by adding a sulfonated styrene polymer as a binder to a specified inorg. proton conductor powder to form a solid-state electrolyte layer. CONSTITUTION:A transparent electrode is attached to a transparent base made of glass or the like, and on this layer an electrochromic layer 4 made of, e.g., WO3, colorable, decolorable, or discolorable reversibly by electrochemical reduction and oxidation is formed. The intended electrochromic display element can be obtained by adding the polymer of sulfonated styrene expressed by the formula as a binder into an inorg. powder high in proton conductivity, selected from a hydronium-substd. type beta''-alumina and antimony oxide hydrate and tin oxide hydrate, and coating said layer with the coating soln. obtd. by above-mentioned way to form a solid-state electrolyte layer. |
