| 主权项 |
1. A driving method for driving an electrophoretic display comprising a first surface on a viewing side, a second surface on a non-viewing side, and an electrophoretic fluid sandwiched between a common electrode and a layer of pixel electrodes; the electrophoretic fluid comprises a first type of pigment particles, a second type of pigment particles, and a third type of pigment particles, all of which are dispersed in a solvent or solvent mixture, wherein
(a) the three types of pigment particles have optical characteristics differing from one another; (b) the first type of pigment particles and the second type of pigment particles carry opposite charge polarities; and (c) the third type of pigment particles has the same charge polarity as the second type of pigment particles but at a lower intensity;the method comprises the following steps:
(i) driving a pixel in the electrophoretic display to the color state of the first type of pigment particles or the color state of the second type of pigment particles; (ii) applying a first driving voltage to the pixel in the color state of the first type of pigment particles for a first period of time, wherein the first driving voltage has the same polarity as the second type of pigment particles and the first period of time is not sufficiently long to drive the pixel to the color state of the second type of pigment particles, or
applying a second driving voltage to the pixel in the color state of the second type of pigment particles for a second period of time, wherein the second driving voltage has the same polarity as the first type of pigment particles and the second period of time is not sufficiently long to drive the pixel to the color state of the first type of pigment particles; and (iii) applying a shaking waveform. |
