| 摘要 |
PURPOSE:To prepare the title element which eliminates the necessity of spacer and sealing, is high in the response speed and has excellent durability and large area and functions of display and dimming, by sandwiching a particular resin compsn. and an electrochromic substance between a pair of counter electrodes. CONSTITUTION:In 100pts. resin (A) having a polar group and high dielectric constant (e.g., polyvinyl butyral) is dispersed 5-500pts. org. substance (B) contg. a polyalkylene oxide chain of the formula II (wherein R is alkyl having a b.p. of pref. 100 deg.C or above), such as a dialkyl ester of the formula I (wherein R1-R2 are each alkyl; and n>2) (e.g., triethylene glycol 2-ethylbutyrate) and 0.1-200pts. electrolyte (C) pref. contg. Li (e.g., LiClO4), thereby preparing a resin compsn. 4. On a substrate comprising a transparent substrate 1 such as glass or plastic sheet, and, formed thereon, a transparent electrode 2 comprising a transparent conductor, such as tin oxide film or indium oxide-tin oxide, are laminated thereon an electrochromic layer 3 comprising WO3, IrO2, or polyisothianathene, a resin compsn. 4, and a counter electrode 5 comprising a conductive substance, such as gold, silver or carbon, optionally having a reversible redox substance.
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