| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress mixing with the colors of other particle groups when the color of a particle group is displayed with gradation. <P>SOLUTION: A driving device 20 includes a voltage application unit 30 that applies, when it displays the color of a first electrophoresis migration particle 11 with gradation on a display medium 10, a first voltage equal to or higher than a threshold voltage necessary for peeling off at least some of the first electrophoresis migration particles 11 from a display substrate 1 or a backside substrate 2 and based on the gradation of the color of the first electrophoresis migration particles 11 between the substrates, and then applies a second voltage equal in polarity to the first voltage and lower than the threshold voltage. The display medium 10 includes the display substrate 1 having translucency, the backside substrate 2 disposed to face the display substrate 1 with a gap, a dispersion medium 6 sealed between the display substrate 1 and the backside substrate 2, and the first electrophoresis migration particles 11 and the second electrophoresis migration particles 12 different in color and charge polarity, dispersed in the dispersion medium 6 and sealed between the substrates to move therebetween according to an electric field formed between the substrates. <P>COPYRIGHT: (C)2012,JPO&INPIT |
