Patent ID: 8482516

Claim:
A reflective image display medium comprising: a filter including a first region having a chromatic color; a back substrate; a plurality of first particles that reflect light; a plurality of second particles having substantially black color and having opposite polarity to the first particles; and a plurality of cells disposed between the filter and the back substrate, each of the cells having the first particles and the second particles; wherein, when the chromatic color is displayed, the first particles are moved by an electric field to a filter side in the cell, and concentrated in a first area corresponding to the first region in the cell, and reflect a light to an outside of the reflective image display medium through the first region, when a black color is displayed, the second particles are moved by an electric field to the filter side in the cell and concentrated in the first area, and absorb a light irradiated to the second particles, the filter includes a second region that transmits a white light to an outside of the reflective image display medium, and when the chromatic color is displayed, the first particles concentrate in the first area and a second area corresponding to the second region in the cell, and reflect a light to the outside of the reflective image display medium through the first region and the second region.