| 摘要 |
PURPOSE:To provide a display material which is capable of coloring and decoloring, free from inadvertent coloring and readily adaptable to multicoloring and exhibits clear colors, and which comprises a material layer contg. a particular pigment and a supporting electrolyte and capable of undergoing solid-liq. change by heating and cooling. CONSTITUTION:A pigment capable of undergoing oxidation and/or reduction reaction by application of electric current and thus coloring and decoloring (e.g., crystal violet lactone) and a supporting electrolyte (e.g., tetra-n- butylammonium tetrafluoroborate) are incorporated in an insulating medium (e.g., PE) in respective amts. of at least 1/10<7>wt.% and at least 10<-10>mol./l, thereby obtaining a material layer 22. Then, a solid coating film of the above- mentioned material layer 22 is formed on a substrate 21 of a synthetic resin having a colorless or white conductive substance kneaded thereinto. On the solid coating film is superimposed by thermocompression bonding a synthetic resin film 23 having a vapor deposition film 24 of ITO etc. disposed on the whole surface of one side thereof, thereby obtaining a display material.
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