Display panel and display device

A display device, comprising a display panel, which comprises:

• a plurality of light emission lines, configured to transmit a plurality of light emission control signals;
• a plurality of frequency sweep lines, configured to transmit a plurality of frequency sweep signals;
• and
• a plurality of sub-pixel groups, each of the sub-pixel groups comprises a plurality of sub-pixels, each of the sub-pixels comprises a light-emitting device and a pixel driving circuit;
• the pixel driving circuit is configured to provide a flow path according to a corresponding light emission control signal for a driving current driving the light-emitting device to emit light, the pixel driving circuit comprises a pulse amplitude modulation module and a pulse width modulation module, the pulse amplitude modulation module is configured to receive a corresponding pulse amplitude modulation voltage to control a pulse amplitude of the driving current;
• the pulse width modulation module is configured to control a pulse width of the driving current by cooperating with the pulse amplitude modulation module according to a corresponding frequency sweep signal and pulse width modulation voltage when the pixel driving circuit provides the flow path for the driving current according to the corresponding light emission control signal,
• wherein the pulse width modulation modules of the plurality of sub-pixels comprised in the same sub-pixel group are used to receive the same frequency sweep signal, and the pulse width modulation modules and the pulse amplitude modulation modules of the plurality of sub-pixels comprised in the same sub-pixel group are used to receive the same light emission control signal;
• the start time when the pixel driving circuits of at least two of the sub-pixel groups provide the flow paths for corresponding driving currents according to the corresponding light emission control signals is different.