Patent ID: 9202417
Filing Date: 2015-12-01
Classification: G09G

Abstract:
1. A driving method of an electrophoretic display device, which has a plurality of pixels where an electrophoretic layer is interposed between a first electrode and a second electrode, and when in a case when the potential of the first electrode is higher than the potential of the second electrode, a first polarity is set, and in a case when the potential of the first electrode is lower than the potential of the second electrode, a second polarity is set, as a display state of the pixel, a first display state is selected by supplying a voltage with the first polarity to the pixel and a second display state is selected by supplying a voltage with the second polarity to the pixel, and a halftone state between the first display state and the second display state is selected according to a period when the potential of the first electrode is higher than the potential of the second electrode, comprising: supplying a first voltage pulse with one polarity of the first polarity or the second polarity to a first pixel in a third display state between the first display state and the second display state out of the plurality of pixels; supplying a second voltage pulse with the other polarity of the first polarity or the second polarity to the first pixel; supplying a third voltage pulse, which has the same polarity as the polarity of the first voltage pulse and has a duration different from a duration of the first voltage pulse, to a second pixel which is in the third display state out of the plurality of pixels; and supplying the second voltage pulse to the second pixel, wherein the second voltage pulse supplied to the first pixel and the second pixel is for a same duration, wherein a given pixel from among the plurality of pixel is driven to a final display state that is the first state, the second state, or the halftone state, when the final display state is the halftone state that is closer to the first state than the second state, the given pixel is driven to the first state before being driven to the final display state, and when the final display state is the halftone state that is closer to the second state than the first state, the given pixel is driven to the second state before being driven to the final display state.