Patent ID: 7990602

Claim:
A display medium comprising: a pair of substrates; an electrode arranged between the pair of substrates; a multilayered structure including plural color-forming layers arranged between one substrate of the pair of substrates and the electrode, each of the plural color-forming layers containing an electroconductive cloth or film-member porous body configured as a single independent member and an electrochromic dye which is retained by the porous body and is reversibly colored or decolored by at least one of an electrochemical oxidation reaction or a reduction reaction, and the colors when the electrochromic dyes in the respective plural color-forming layers are colored being different from one another; and an electrolytic material included in a region between the pair of substrates, wherein the electrolytic material is a liquid or a gel, and permeates the multilayered structure; the electrolytic material is a solution in which an electrolyte is dissolved in a solvent, or a gel of the solution; and the electrolytic material further contains a redox agent which does not form a color by a redox reaction.