The present application discloses a pixel driving circuit and a display panel. Before the charging module charges the pixel electrode, the present application releases the voltage of the pixel electrode by means of the discharging electrode. Therefore, it is possible to avoid that the voltage of the pixel electrode is charged to a target value after the residual voltage on the pixel electrode needs to be canceled during charging the pixel electrode by the charging module. As a result, the power consumption of the pixel electrode during the charging/discharging process can be reduced, and the charging/discharging time period of the pixel electrode can be reduced.

A display panel and a display device are provided. The display panel includes at least one pixel circuit and a light emitting element. One pixel circuit includes a driving transistor, a second transistor, a third transistor, and a first light-emission controlling module. The second transistor is connected between a data line and a source of the driving transistor and is configured to provide a data signal. The third transistor is connected between a voltage adjusting signal line and the source of the driving transistor and is configured to provide an adjusting voltage. The first light-emission controlling module is connected between a first power supply terminal and the source of the driving transistor and is configured to provide a power supply voltage. The power supply voltage provided by the first power supply terminal is VP, and the adjusting voltage is VJ, where VP<VJVP+3.5V, and/or VP+1V<VJ.

A display device can include a display panel including subpixels connected to data lines and reference lines, a driving circuit connected to the data lines, a sensing circuit including a first voltage circuit connected to the reference lines and configured to apply a first reference voltage to initialize sensing nodes of the subpixels, and a sampling circuit configured to perform a sampling operation to sense the sensing nodes of the subpixels. Also, the display device can further include a timing controller configured to generate a first reference voltage control signal for varying a level of the first reference voltage based on a driving frequency of the display panel.

An electrophoretic display panel includes a first substrate, electrophoretic particles, a scan line, a data line, and a pixel. The scan line, the data line, and the pixel are located on the same side of the first substrate facing the electrophoretic particles. The scan line is configured to transmit a scan signal to the pixel. The data line is configured to transmit a data signal to the pixel, and a data signal includes multiple unit periods. In a write state in a drive stage of the electrophoretic display panel, the data signal includes a drive signal and at least one adjustment signal inserted into the drive signal and configured to divide the drive signal into at least two drive sub-signals, and a voltage of a drive sub-signal of the at least two drive sub-signal is different from a voltage of an adjustment signal in a unit period.

A dimming device according to the present disclosure includes a dimming panel. The dimming panel includes a dimming layer, a plurality of column electrodes, and a plurality of row electrodes. The dimming layer has a plurality of regions partitioned in a matrix. The column electrodes are arranged in a row direction along a front surface of the dimming layer. Each of the column electrodes extends in a column direction. The row electrodes face the column electrodes with the plurality of regions interposed therebetween and are arranged in the column direction along a back surface of the dimming layer. Each of the row electrodes extends in the row direction. Voltages having substantially the same waveform are supplied to a column electrode and a row electrode corresponding to a region of the regions controlled to a predetermined transmittance, among the column electrodes and the row electrodes.

Multi-particle electrophoretic displays, including three and four-particle displays, and methods of driving such displays with waveforms having shaking pulses configured to reduce or eliminate image ghosting.

In one or more examples, a display apparatus may include a display panel on which sub-pixels are arranged, each of the sub-pixels including an organic light-emitting diode and a driving transistor for driving the organic light-emitting diode, data lines disposed on the display panel and connected to the sub-pixels, gate lines disposed on the display panel and connected to the sub-pixels, sensing lines disposed on the display panel and connected to the sub-pixels, a data driving circuit configured to supply data voltages to the data lines, a gate driving circuit configured to supply gate voltages to the gate lines, a sensing circuit connected to the sensing lines to sense sensing voltages of the sub-pixels, and a controller configured to determine whether at least one of the driving transistor and the organic light-emitting diode is defective based on a sensing voltage sensed by the sensing circuit.