A display device comprising: (a) an electrophoretic medium which comprises a first type of particles, a second type of particles and a third type of particles, all dispersed in a solvent or solvent mixture; the first type of particles and second type of particles are white and black, respectively and the third type of particles is non-white and non-black; wherein: (i) the first type of particles has a charge of one polarity and the second and third types of particles have charges of the opposite polarity, (ii) the charge intensity of the third type of particles is weaker than that of the second type of particles, and (iii) the second type of particles has an electric field threshold, wherein electric field threshold is defined as the maximum electric field that may be applied to the electrophoretic medium for a period not longer than 30 seconds without causing the second type of particles to appear at the viewing side of a pixel when the pixel is driven from a color state other than that of the second type of particles; the display being characterized by: (b) a plurality of pixels wherein each pixel has first, second and third sub-pixels, the first and second sub-pixels each having a color filter, the two color filters and the third type of particles having three different colors, the colors of the color filters being selected to be complementary to the color of the third type of particles according to the additive or subtractive color system, and the third sub-pixel having a color filter which is clear and colorless or having no color filter. (a) an electrophoretic medium which comprises a first type of particles, a second type of particles and a third type of particles, all dispersed in a solvent or solvent mixture; the first type of particles and second type of particles are white and black, respectively and the third type of particles is non-white and non-black; wherein: (i) the first type of particles has a charge of one polarity and the second and third types of particles have charges of the opposite polarity, (ii) the charge intensity of the third type of particles is weaker than that of the second type of particles, and (iii) the second type of particles has an electric field threshold, wherein electric field threshold is defined as the maximum electric field that may be applied to the electrophoretic medium for a period not longer than 30 seconds without causing the second type of particles to appear at the viewing side of a pixel when the pixel is driven from a color state other than that of the second type of particles; the display being characterized by: (i) the first type of particles has a charge of one polarity and the second and third types of particles have charges of the opposite polarity, (ii) the charge intensity of the third type of particles is weaker than that of the second type of particles, and (iii) the second type of particles has an electric field threshold, wherein electric field threshold is defined as the maximum electric field that may be applied to the electrophoretic medium for a period not longer than 30 seconds without causing the second type of particles to appear at the viewing side of a pixel when the pixel is driven from a color state other than that of the second type of particles; (b) a plurality of pixels wherein each pixel has first, second and third sub-pixels, the first and second sub-pixels each having a color filter, the two color filters and the third type of particles having three different colors, the colors of the color filters being selected to be complementary to the color of the third type of particles according to the additive or subtractive color system, and the third sub-pixel having a color filter which is clear and colorless or having no color filter.