Patent ID: 6486866
Filing Date: 2002-11-26
Classification: G02B,G02F,G09G

Abstract:
A display device comprising:display media each of which has a dispersion medium, a large number of electrophoretic particles dispersed in said dispersion medium, said electrophoretic particles being driven by applying an electric field to each of said display media, to thereby perform a desired display operation, said electrophoretic particles comprising small-sized two-color ball electrophoretic particles each of which is composed of a pair of hemispherical portions different from each other in terms of color or reflectance and charging characteristic; and control means for controlling a time required for applying an electric field to each of said display media in such a manner that the electric field is applied to said display medium only for a time required for said two-color ball electrophoretic particles present on the display screen side of said display medium, or the side opposed to said display screen side, of said display medium to be reversed, but to migrate before reaching to the opposed side or to the display screen side.