Sub-pixel structure and pixel structure of an Electrophoretic color display

There is disclosed a sub-pixel structure of an electrophoretic display. The electrophoretic color display comprising a drive unit (110), a display unit (120) and a transparent electrode (130), wherein the display unit (120) is on the driving unit (110) and the transparent electrode (130) on the display unit (120) is applied , The display unit (120) comprises a plurality of first charged particles (122) and a plurality of second charged particles (124). A color of the first charged particles (122) is different from a color of the second charged particles (124). The diameter of the first charged particles (122) are larger than the diameter of the second charged particles (124). The first charged particles (122) and the second charged particles (124) have the same electrical property. The sub-pixel structure of the electrophoretic color display has a high light utilization.