Patent ID: 7880950

Claim:
A display element comprising an electrolyte containing silver or a compound containing silver in the chemical structure thereof between opposed electrodes, and carrying out driving operation for the opposed electrodes to induce silver dissolution and deposition, wherein the electrolyte contains a compound represented by Formula (A); and a compound represented by Formula (1) or Formula (2): wherein X and Y each represent an alkyl group having 1 to 4 carbon atoms, provided that they may be the same or different; “k” and “i” each represent an integer of 0 to 4; “m” and “n” each represent an integer of 3 to 7; and “A” represents an acid component, R 7 —S—R 8 Formula (1) wherein R 7 and R 8 each represent a substituted or unsubstituted hydrocarbon group, provided that an aromatic ring is not included when a ring containing a sulfur atom is formed: wherein, M is a hydrogen atom, a metal atom or a quaternary ammonium; Z represents a nitrogen containing heterocylic group; “n” represents an integer of 0 to 5; R 9 represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkylcarbonamide group, an arylcarbonamide group, an alkylsulfonamide group, an arylsulfonamide group, an alkoxy group, an aryloxy group, an alkylthio group, a arylthio group, an alkylcarbamoyl group, an arylcarbamoyl group, a carbamoyl group, an alkylsulfamoyl group, an arylsulfamoyl group, a sulfamoylmoyl group, a cyano group, an alkylsulfonyl group, an arylsulfonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylcarbonyl group, an arylcarbonyl group, an acyloxy group, a carboxyl group, a carbonyl group, a sulfonyl group, an amino group, a hydroxyl group or a heterocyclic group, provided that when “n” is two or more, plural R 9 s may be the same or different, the plural R 9 s may be joined to form a ring which forms a condensed ring.