Patent ID: 8405648

Claim:
A driver circuit for a bistable display device comprising: a plurality of pixel electrodes; a first power supply; a second power supply; a reference voltage source configured for supplying a reference potential; a high-voltage gate control port selectively driven by the first power supply and configured for providing a first control voltage to control whether to supply the pixel electrodes with a high voltage; a low-voltage gate control port selectively driven by the second power supply and configured for providing a second control voltage to control whether to supply the pixel electrodes with a low voltage; a reference potential port configured for receiving and providing the reference potential as a voltage reference for powering the pixel electrodes; a first discharging circuit electrically connecting the high-voltage gate control port to the ground and configured for accelerating an electrical discharge of the high-voltage gate control port when the first power supply stops driving the high-voltage gate control port; a second discharging circuit electrically connecting the low-voltage gate control port to the ground and configured for accelerating an electrical discharge of the low-voltage gate control port when the second power supply stops driving the low-voltage gate control port; and a switch; wherein when the first power supply and the second power supply respectively drive the high-voltage gate control port and the low-voltage gate control port, the switch is switched to allow the reference potential port to electrically communicate with the reference voltage source; wherein when the first power supply and the second power supply respectively stop driving the high-voltage gate control port and the low-voltage gate control port, the switch is switched to cut off the electrical communication between the reference potential port and the reference voltage source.