The invention discloses a display panel, a driving method thereof and a
display device, and belongs to the technical field of display. A sub-pixel of the display panel comprises a pixel circuit and a light-emitting element; the pixel circuit at least comprises a driving
transistor, a data write-in module, a threshold compensation module and a bias adjustment module. The data write-in module is used for providing a
data signal for the driving
transistor, the bias adjustment module is used for adjusting the bias state of the driving
transistor through a bias adjustment
signal, and the threshold compensation module is used for detecting and compensating the deviation of the
threshold voltage of the driving transistor; a first power
signal connected with the first
electrode of the driving transistor is a fixed value, a second power
signal connected with the second
electrode of the driving transistor is a change value, and a bias adjusting signal is a change value. The driving method is applied to the display panel. The
display device comprises the display panel. According to the invention, the problem of poor display effect caused by threshold drift after the driving transistor works for a long time can be improved, and the
power consumption of the panel can be reduced.