Electrophoretic display and driving method thereof
An electrophoretic display and a driving method thereof are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes an electrophoretic unit and a driving substrate. The electrophoretic unit includes a plurality of electrophoretic particles. The driving substrate is disposed below the electrophoretic unit. The driving circuit is coupled to the driving substrate. The driving circuit sequentially provides a first reset signal and a second reset signal to the driving substrate during a reset period to reset the plurality of electrophoretic particles. The first reset signal sequentially includes a first sub-balanced signal and a first sub-mixed signal. The second reset signal sequentially includes a second sub-balanced signal and a second sub-mixed signal.
1. An electrophoretic display, comprising:
a display panel, comprising:
an electrophoretic unit, comprising a plurality of electrophoretic particles;
a driving substrate, disposed below the electrophoretic unit; and
a driving circuit, coupled to the driving substrate, and configured to sequentially provide a first reset signal and a second reset signal to the driving substrate during a reset period, so as to reset the electrophoretic particles,
wherein the first reset signal sequentially comprises a first sub-balanced signal and a first sub-mixed signal, and the second reset signal sequentially comprises a second sub-balanced signal and a second sub-mixed signal,
wherein the electrophoretic particles comprise a plurality of white electrophoretic particles, and the first sub-balanced signal comprises a first negative voltage pulse, a first positive voltage pulse, a second negative voltage pulse, and a first ground voltage pulse arranged in sequence, and the second sub-balanced signal comprises a second ground voltage pulse and a third negative voltage pulse arranged in sequence.
2. The electrophoretic display as claimed in claim 1 , wherein a time length of the first sub-balanced signal is larger than a time length of the second sub-balanced signal.
3. The electrophoretic display as claimed in claim 1 , wherein a total pulse width of all of positive voltage pulses of the first reset signal, the second reset signal and a driving signal is equal to a total pulse width of all of negative voltage pulses of the first reset signal, the second reset signal and the driving signal.
4. The electrophoretic display as claimed in claim 1 , wherein the electrophoretic particles comprise a plurality of color electrophoretic particles, and the first sub-balanced signal comprises a fourth negative voltage pulse, a third ground voltage pulse, a fifth negative voltage pulse, and a fourth ground voltage pulse arranged in sequence, and the second sub-balanced signal comprises a sixth negative voltage pulse.
5. The electrophoretic display as claimed in claim 1 , wherein the electrophoretic particles comprise a plurality of black electrophoretic particles, and the first sub-balanced signal comprises a seventh negative voltage pulse, a second positive voltage pulse, an eighth negative voltage pulse, a fifth ground voltage pulse, a ninth negative voltage pulse and a sixth ground voltage pulse arranged in sequence, and the second sub-balanced signal comprises a tenth negative voltage pulse, a seventh ground voltage pulse and an eleventh negative voltage pulse arranged in sequence.
6. The electrophoretic display as claimed in claim 1 , wherein the first sub-mixed signal comprises another plurality of positive voltage pulses and another plurality of negative voltage pulses arranged in interleaving, and the second sub-mixed signal comprises yet another plurality of positive voltage pulses and yet another plurality of negative voltage pulses arranged in interleaving,
wherein a pulse width of each of the another plurality of positive voltage pulses and the another plurality of negative voltage pulses is larger than a pulse width of each of the yet another plurality of positive voltage pulses and the yet another plurality of negative voltage pulses.
7. The electrophoretic display as claimed in claim 6 , wherein a pulse number of the first positive voltage pulses and the first negative voltage pulses is greater than a pulse number of the second positive voltage pulses and the second negative voltage pulses.
8. The electrophoretic display as claimed in claim 1 , wherein the driving circuit is further configured to provide a driving signal to the driving substrate during a display driving period, so as to drive the electrophoretic particles in the electrophoretic unit, such that the display panel displays a color corresponding to the driven electrophoretic particles.
9. A driving method of an electrophoretic display, wherein the electrophoretic display comprises a display panel and a driving circuit, and the display panel comprises an electrophoretic unit and a driving substrate, the driving method comprising:
providing a first reset signal to the driving substrate by a driving circuit during a reset period, so as to reset a plurality of electrophoretic particles in the electrophoretic unit through a first sub-balanced signal and a first sub-mixed signal sequentially included in the first reset signal; and
providing a second reset signal to the driving substrate by the driving circuit during the reset period, so as to reset the electrophoretic particles in the electrophoretic unit through a second sub-balanced signal and a second sub-mixed signal sequentially included in the second reset signal,
wherein the electrophoretic particles comprise a plurality of white electrophoretic particles, and the first sub-balanced signal comprises a first negative voltage pulse, a first positive voltage pulse, a second negative voltage pulse, and a first ground voltage pulse arranged in sequence, and the second sub-balanced signal comprises a second ground voltage pulse and a third negative voltage pulse arranged in sequence.