Patent ID: 7990606

Claim:
A display element comprising an electrolyte layer containing silver or a compound containing silver in a chemical structure thereof between opposed electrodes, and carrying out driving operation for the opposed electrodes to induce silver dissolution and deposition, wherein the electrolyte layer comprises a butyral resin having a number of PVA groups represented by (A) of from 15% to 25% based on a total number of the PVA groups represented by (A), PVAc group represented by (B), and PVB group represented by (C), wherein R is a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group, a coloring material having an average primary particle diameter of from 200 nm to 1,000 nm, an organic solvent having a boiling point of from 120° C. to 300° C., and a weight ratio of the organic solvent to the butyral resin is between 10:1 and 10:5.