Pixel driving structure and display panel

A pixel driving structure, comprising:

• a pulse width modulation driving circuit configured to control a pulse width of a driving current supplied to a light emitting device to be driven according to a pulse width modulation data voltage;
• a pulse amplitude modulation driving circuit configured to control an amplitude of the driving current supplied to the light emitting device to be driven according to a pulse amplitude modulation data voltage;
• and
• a buffer circuit electrically coupled between the pulse width modulation driving circuit and the pulse amplitude modulation driving circuit for adjusting a rate at which the pulse width modulation driving circuit applies a pulse width modulation voltage to the pulse amplitude modulation driving circuit, wherein
• the pulse amplitude modulation driving circuit comprises a first driving transistor and a first storage capacitor, and wherein,
• a first electrode of the first storage capacitor is electrically coupled with a first power voltage terminal, and a second electrode of the first storage capacitor is electrically coupled with a control electrode of the first driving transistor;
• the buffer circuit comprises a second storage capacitor a first electrode of the second storage capacitor is electrically coupled with the pulse width modulation driving circuit, and a second electrode of the second storage capacitor is electrically coupled with the control electrode of the first driving transistor.