It may be understood that each of sub-pixels of a display panel may be arranged to include a pixel circuit as shown in FIG. 4. Alternatively, multiple ones of the sub-pixels may be arranged to share the second switching transistor and the sensing signal line. Regardless of the manner of arrangement, the voltage of the anode of the light-emitting diode may be sensed and compensated by using a compensation method provided by the embodiment(s) of the present disclosure.

It should be noted that each of the above driving transistors and switching transistors may be a thin film transistor or a metal oxide semiconductor field effect transistor (MOSFET), and embodiments of the present disclosure are not limited thereto. In an embodiment according to the present disclosure, depending on types of the switching transistors and signal on signal terminals, the first electrode of the switching transistor may be its source and the second electrode of the switching transistor may be its drain; or, conversely, the first electrode of the switching transistor may be its drain and the second electrode of the switching transistor may be its source. The light-emitting transistor may be an OLED. In the above description, for a n-type transistor, the first level signal is a high-level signal and the second level signal is a low-level signal. For a p-type transistor, the first level signal is a low-level signal and the second level signal is a high-level signal.