Patent ID: 8537454
Filing Date: 2013-09-17
Classification: G02F,G09G

Abstract:
1. A display medium driver including a display substrate that has translucency, a rear substrate that is opposed to the display substrate with a gap interposed therebetween, a dispersion medium that is enclosed between the display substrate and the rear substrate, a first particle group that is dispersed in the dispersion medium and that migrates by applying a first voltage of which an absolute value is equal to or greater than a first threshold value across the substrates, and a second particle group that is dispersed in the dispersion medium and that migrates by applying a second voltage of which an absolute value is equal to or greater than a second threshold value less than the first threshold value across the substrates, the driver comprising: a setting unit that sets a voltage value and a voltage application time of the first voltage with which the first particle group does not migrate at the time of causing the second particle group to migrate depending on a display density of the second particle group when the second particle group is caused to migrate after the first particle group is caused to migrate; and a voltage application unit that first applies the first voltage set by the setting unit across the substrates and then applies the second voltage across the substrates by