To prevent the incorporation of gas, such as air (bubbles), into cells during the enclosure of a dispersion liquid containing electrophoretic particles in the cells. In the enclosure of a dispersion liquid, which contains electrophoretic particles dispersed in a hydrophobic dispersion medium, in a matrix of cells defined by a plurality of partitions, the dispersion liquid is supplied to the cells, an LB film of amphiphilic molecules each having both a hydrophilic group and a hydrophobic group is formed over at least exposed portions of the dispersion liquid in the openings of the cells, and the openings of the cells are hermetically sealed with a substrate with the LB film interposed therebetween.