Patent ID: 7880955

Claim:
An electrophoretic dispersion solution comprising: a nonpolar solvent; and plural kinds of electrophoretic particles, wherein at least one kind of the electrophoretic particles has, on surfaces, a copolymer including a first monomer that has a charged group and a second monomer expressed by a first formula represented as where R denotes a hydrogen atom or a methyl group, R′ denotes a hydrogen atom or an alkyl group with a carbon number of 1 through 4, n is a natural number, and x denotes an integer of 1 through 3; and at least another kind of the electrophoretic particles has, on surfaces, a polymer including a third monomer expressed by a second formula represented as as a component of the polymer, where R denotes a hydrogen atom or a methyl group and R″″ denotes an alkyl group with a carbon number of 4 or larger.