| US 7,616,185 B2 | ||
| Image display medium, image display device, and image display method | ||
| Yoshiro Yamaguchi, Atsugi (Japan); Kiyoshi Shigehiro, Fujisawa (Japan); Yoshinori Machida, Atsugi (Japan); Motohiko Sakamaki, Hadano (Japan); and Takeshi Matsunaga, Hadano (Japan) | ||
| Assigned to Fuji Xerox Co., Ltd., Tokyo (Japan) | ||
| Filed on Aug. 29, 2001, as Appl. No. 9/940,801. | ||
| Claims priority of application No. 2000-335702 (JP), filed on Nov. 02, 2000. | ||
| Prior Publication US 2002/0050976 A1, May 02, 2002 | ||
| Int. Cl. G09G 3/34 (2006.01) | ||
| U.S. Cl. 345—107 [359/296] | 25 Claims |
| 1. A reflective image display medium comprising:
a display substrate having a first side and a second side;
a back substrate;
an electrode formed on the first side;
a spacer for forming a gap between the display substrate and the back substrate;
two kinds of particles differing in color and charging polarity sealed between the display substrate and the back substrate,
wherein the two kinds of particles are respectively retroreflective particles and black particles; and
a filter of plural colors for transmitting light of a specific wavelength, wherein the filter formed on the second side, the
filter containing dispersed colored fine particles, and
wherein the filter is divided into plural chromatic regions and plural achromatic regions, the achromatic regions being configured
to transmit a reflected light reflected by one kind of the particles to an outside of the reflective image display medium.
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