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A new organic electrochromic display has been developed, which can display three different colors (red, green and greenish-blue) on a white background using new redox-pair dyes. The new dyes are composed of an anthraquinone compound showing red coloration at the reduced state, and a diphenylamine compound which shows green and greenish-blue colorations at two different oxidized states.
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Ueno et al. (1985) studied this question.
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