Display panel and driving method of display panel

A driving method of a display panel comprising a plurality of pixel circuits, in which each of the plurality of pixel circuits comprises:

• a light emitting unit comprising a light emitting element;
• a control circuit comprising an input end and an output end, the control circuit being configured to control a light emitting duration of the light emitting element based on a voltage of the input end;
• a first switching element connected between the input end and the output end of the control circuit;
• and
• a signal input unit comprising a second switching element and configured to transmit an input signal to the input end of the control circuit, the input signal comprising a reference signal, a gradation data signal and a sweep signal,
• the driving method comprising:
• setting the voltage of the input end of the control circuit to a first value based on the reference signal input through the signal input unit while turning on the first and second switching elements;
• changing the voltage of the input end of the control circuit from the first value to a second value in response to the first and second switching elements being turned off;
• and
• after changing the voltage of the input end of the control circuit to the second value, controlling the light emitting duration based on the voltage of the input end of the control circuit being changed in time based on the gradation data signal and the sweep signal input through the signal input unit,
• wherein the first switching elements of each of the plurality of pixel circuits are configured to turn on or off at once, and
• wherein a voltage value of the sweep signal is changed in time continuously.