Particle use for image display media, image display panel using the particles, and image display device

Particles used for image display media in an image display panel, comprising at least two groups of the image display media sealed between opposed substrates, at least one of two substrates being transparent, and in which the image display media, to which an electrostatic field generated between two electrodes having different potentials is applied, are made to move so as to display an image, wherein one of the two groups of the particles having different charge characteristics and different optical reflectance included in the at least two groups of the image display media has a surface on which a macroscopic concavo-convex portion exists, and the other of the two groups of the particles has a surface on which no macroscopic concavo-convex portion exists and on which fine particles are adhered in an electrostatic manner;

• and
• wherein, among the two groups of the particles having different charge characteristics and different reflectance, the fine particles adhered to the surface of the particles, on which no macroscopic concavo-convex portion exists, have a reverse charge polarity with respect to a charge polarity of the particles having the surface, on which no macroscopic concavo-convex portion exists, and, the fine particles do not change a charge polarity of the particles having the surface, on which no macroscopic concavo-convex portion exists, after being adhered.