A system for displaying images is provided. The system includes a display device including a display device having a pixel unit array. Each pixel unit is constituted by a first sub-pixel and a second sub-pixel adjoined thereto. The first sub-pixel includes a plurality of first charged colored particles and a plurality of second charged colored particles to receive a light source that doesn't pass through a color filter. The second sub-pixel includes a plurality of third charged colored particles and a plurality of fourth charged colored particles to receive the light source. The pluralities of first, second, third, and fourth charged colored particles have at least three colors in total.