Abstract: Method for driving an electrophoretic display layer to color states having improved a* and/or b* values. The display layer includes an electrophoretic medium with first, second, third, and fourth types of particles. The first and third particles have charges of opposite polarity than the second and fourth particles. The first particles have greater charge magnitude than the third particles. The second particles have greater charge magnitude than the fourth particles. The method includes (a) applying a pre-push voltage pulse of the first polarity and a given amplitude to the display layer for a first time period to promote separation of the first and third particles; and (b) applying push-pull voltage pulses to the display layer for a second time period to drive the display to a color state of the third particles. The push-pull voltage pulses alternate between the first and second polarity with amplitudes greater than the given amplitude.

Abstract: A method for driving a bistable display device is provided. The bistable display device has a matrix of pixels arranged in a plurality of rows and a plurality of columns, a timing controller and a source driver. The timing controller is configured to sequentially output control signals which correspond to a positive high voltage, a negative high voltage and a ground voltage respectively to the source driver. The source driver is configured to drive each pixel with the voltages corresponding to the control signals. The method comprises: providing only the positive high voltage or the ground voltage to one of two pixels in two adjacent rows of the same column if the source driver provides the positive high voltage to the other one when the source driver consecutively drives the two pixels.

Abstract: An exemplary driver circuit for bistable display device includes a plurality of pixel electrodes, a first power supply, a second power supply, a high-voltage gate control port selectively driven by the first power supply, a low-voltage gate control port selectively driven by the second power supply, a reference potential port, a first discharging circuit connecting the high-voltage gate control port to the ground, a second discharging circuit connecting the low-voltage gate control port to the ground, and a switch for deciding whether the reference potential port is electrically connected to a reference voltage source or not.

Abstract: A driving method for pixels of bistable display is adapted into a bistable display having a plurality of pixels. The driving method comprises: increasing predetermined driving forces of the pixels to increased driving forces in a predetermined period; employing the increased driving forces to drive the pixels in the predetermined period respectively; and employing the predetermined driving forces configured for driving the pixels to drive the pixels out of the predetermined period respectively.

Abstract: An exemplary driver circuit for bistable display device includes a plurality of pixel electrodes, a first power supply, a second power supply, a high-voltage gate control port selectively driven by the first power supply, a low-voltage gate control port selectively driven by the second power supply, a reference potential port, a first discharging circuit connecting the high-voltage gate control port to the ground, a second discharging circuit connecting the low-voltage gate control port to the ground, and a switch for deciding whether the reference potential port is electrically connected to a reference voltage source or not.

Abstract: A method for driving a bistable display device is provided. The bistable display device has a matrix of pixels arranged in a plurality of rows and a plurality of columns, a timing controller and a source driver. The timing controller is configured to sequentially output control signals which correspond to a positive high voltage, a negative high voltage and a ground voltage respectively to the source driver. The source driver is configured to drive each pixel with the voltages corresponding to the control signals. The method comprises: providing only the positive high voltage or the ground voltage to one of two pixels in two adjacent rows of the same column if the source driver provides the positive high voltage to the other one when the source driver consecutively drives the two pixels.