Patent ID: 9019318
Filing Date: 2015-04-28
Classification: G09G

Abstract:
1. A driving method for an electrophoretic display device which comprises a plurality of pixels and has a color system comprising a first color state, a second color state and intermediate color states between the first color state and the second color state, the method comprising: (i) applying a first driving pulse to drive a pixel of the plurality of pixels from an initial color state of the pixel to the first color state, wherein the initial color state is selected from the group consisting of the first color state, the second color state and the intermediate color states and the first driving pulse is applied for a predetermined length of time which is the same regardless of the initial color state of the pixel; and (ii) applying a second driving pulse to drive the pixel to a color state of a desired level, wherein the first driving pulse and the second driving pulse have the same magnitude, but opposite polarities.