Abstract: The present application discloses a display panel and a display device. The display panel includes a substrate, a driving circuit layer, and a light-emitting structure layer, wherein a drain of a repair transistor is connected to an anode of the light-emitting device, and a source of the repair transistor is connected to a cathode of the light-emitting device, so that when the light-emitting device has an abnormal bright spot, the repair electrode can connect a gate of the repair transistor to a power signal line, and can short-circuit the anode and the cathode of the light-emitting device, so as to facilitate repairing the abnormal bright spot in the light-emitting device as a dark spot.

Abstract: A pixel circuit, a display panel and a display device are disclosed. The pixel circuit include a lighting unit comprising a sub-pixel lighting unit, a pixel driving unit comprising a sub-pixel driving unit, and a fusing unit electrically connected between the sub-pixel lighting unit and the sub-pixel driving unit. The fusing unit breaks a connection between the sub-pixel lighting unit and the sub-pixel driving unit when a current outputted by the sub-pixel driving unit is higher than a fusing current threshold. This fusing unit could be broken under a high current. Therefore, when the sub-pixel lighting unit has a bright dot issue (this often means that the current is higher than the fusing current threshold), the fusing unit is broken and thus automatically fix the bright dot. This mechanism enormously reduces the repair time of the bright dots and raises the display quality and the manufacturing efficiency.

Abstract: A pixel driving circuit including a driving thin-film transistor; a regulating capacitor, wherein a first terminal of the regulating capacitor is connected to a control terminal of the driving thin-film transistor, and a second terminal of the regulating capacitor is connected to a first terminal of the driving thin-film transistor; a first capacitor, wherein a first terminal of the first capacitor is connected to the control terminal of the driving thin-film transistor, and a second terminal of the first capacitor is connected to a second terminal of the driving thin-film transistor; and a light-emitting device, wherein a first terminal of the light-emitting device is connected to the second terminal of the driving thin-film transistor, and a second terminal of the light-emitting device is grounded.