Patent ID: 8836636
Filing Date: 2014-09-16
Classification: G09G

Abstract:
1. A driving method of an electrophoretic display device, comprising: the electrophoretic display device comprises a display unit including a plurality of pixels in which electrophoretic elements including electrophoretic particles are interposed between a pair of substrates, and the display unit displays an image based on image data that is configured with first and second gray scales; each pixel of the plurality of pixels including a pixel electrode, a pixel switching element, a memory circuit connected between the pixel electrode and the pixel switching element, and a switch circuit connected between the pixel electrode and the memory circuit; and first and second control lines connected to the switch circuit, wherein when a first ratio of first pixel data corresponding to the first gray scale is 50% or more of the image data, a first three-step image display driving action is performed to display the image on the display unit as follows: a first pixel data signal input step in which the image data is input as a first image signal to the memory circuit of each pixel; a first image display step for the first pixel data in which all the pixels are set in the first gray scale by inputting first control signals having a first same potential to the first and second control lines so that an entire area of the display unit is in the first gray scale; and a second image display step for the first pixel data in which a first portion of the image, which corresponds to the second gray scale that is different from the first gray scale, is displayed at the display unit by inputting a first potential to one control line of the first and second control lines connected to the pixel electrode of the pixel to which the first image signal corresponding to the second gray scale is input, and electrically disconnecting the other control line so that the display unit displays the image in the first and second pray scales.