| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrochromic display element excellent in contrast when displaying in color or in black and white. SOLUTION: The electrochromic display element is composed of an electrode, an oxidized coloring film formed on the electrode, a solid electrolyte film formed on this coloring film, a color reduction film formed on this solid electrolyte film, and an electrode formed on this reduction film. The above solid polyelectrolyte film consists of a kind of an aromatic high molecular compound selected from the following materials containing proton conductivity substituent: polysulfone, polyether sulfone, polyether ether sulfone, polyariel ether sulfone, polyphenylene oxide, polyphenylene sulfide, polyphenylene sulfoxide, polyparaphenylene, polyarylene, polyether ketone, polyether ether ketone, polyether ketone, polybenzoxazole, polybenzothiazole, polybenzimidazole, polymide, polyamide, and polyamidoimide. COPYRIGHT: (C)2006,JPO&NCIPI
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