Patent ID: 7209112

Claim:
An image display device comprising: an image display medium which includes a display substrate, a rear substrate, display side electrodes which are linearly disposed at a side of the display substrate in a predetermined direction, rear side electrodes which are linearly disposed at a side of the rear substrate in a direction intersecting the predetermined direction, and plural types of colored particles each having different charging characteristics, which are interposed so as to be movable between the display side electrodes and the rear side electrodes; and a voltage applying component by which a voltage is applied to a display side electrode and a rear side electrode, both selected to contribute to an image display, to generate therebetween a potential difference which triggers particle movement, and a voltage is applied to at least one of a display side electrode and to a rear side electrode, in which at least one of the display side electrode and the rear side electrode is not selected to contribute to the image display, to generate therebetween a potential difference which is smaller than the potential difference which triggers particle movement, thereby inhibiting a movement of particles at least one of towards and away from an electrode not selected to contribute to the image display, wherein the voltage applying component applies a voltage to the display side electrodes and the rear side electrodes such that a potential difference between the display side electrodes contributing to image display and the display side electrodes not contributing to the image display is smaller than a potential difference between the rear side electrodes contributing to the image display and the rear side electrodes not contributing to the image display, thereby further inhibiting a movement of particles between the display side electrodes contributing to image display and the display side electrodes not contributing to the image display.