Patent ID: 7570412

Claim:
A manufacturing method of an electrochromic displaying element, comprising: a step in which a metal oxide particle layer is formed on a transparent conductive film of a displaying electrode having a transparent substrate including the transparent conductive film; a step in which metal oxide particles in the metal oxide particle layer react with a coupling agent shown in Chemical Formula (3); a step in which a reversible recording material is formed so that the above reacted substance further reacts with a compound shown in Chemical Formula (4); a step in which an electrode having a substrate including a conductive film corresponding to the displaying electrode is formed; and a step in which an electrolyte layer is formed between the displaying electrode and the electrode corresponding to the displaying electrode; wherein [Chemical Formula (3)] M—R 1 —A (3) in Chemical Formulae (3) and (4), M shows a functional group including an element selected from Si, Ti, and Al; Z shows a linkage of a methylene group or a sulfide group capable of having a substituent group; Ar shows an aromatic group capable of having a substituent group; R 1 and R 2 show corresponding alkylene groups capable of having a substituent group; R 3 shows an alkylene group capable of forming a ring structure linked with —N—C—O— and able to have a substituent group; “n” is an integer which is 1 or more; and each of A and B independently shows a functional group selected from an amino group, a carboxyl group, an epoxy group, an isocyanate group, a thioisocyanate group, an amido group, an ester group, an aldehyde group, and a hydroxyl group.