Patent ID: 8941635
Filing Date: 2015-01-27
Classification: G09G

Abstract:
1. A driving circuit for an electrophoretic display device that comprises a common electrode to which a common voltage is applied, a pixel electrode and an electrophoretic particle interposed between the common electrode and the pixel electrode, the driving circuit comprising: a first backup capacitor retaining a first voltage that is higher than a power supply voltage; a second backup capacitor retaining a second voltage that is higher than the first voltage; a third backup capacitor retaining a third voltage that is generated by inverting the second voltage with reference to the common voltage; a display setting register retaining either a display clearing signal or a display retaining signal; a low voltage detection circuit detecting a reduction in the power supply voltage; a display setting circuit outputting the display clearing signal when the low voltage detection circuit detects the reduction in the power supply voltage while the display setting register retains the display clearing signal; and a drive voltage output circuit outputting the second voltage, the third voltage or the common voltage to the pixel electrode in accordance with display data, the drive voltage output circuit being configured to output the second voltage or the third voltage to the pixel electrode in accordance with the display clearing signal.