Pixel circuit, its driving methods, organic light-emitting diode display panel, and display device

A pixel circuit comprising:

• a driving transistor;
• a first storage capacitor;
• an organic light-emitting diode (OLED),
• wherein a gate electrode of the driving transistor is connected to a first end of the first storage capacitor,
• wherein a first electrode of the driving transistor is connected to an anode of the OLED, and
• wherein a cathode of the OLED is configured to receive a first voltage;
• a driving controlling circuit connected to the first end of the first storage capacitor, a second end of the first storage capacitor, the first electrode of the driving transistor and a second electrode of the driving transistor, wherein the driving controlling circuit is configured to, based on a first scanning signal and a second scanning signal, charge or discharge the first storage capacitor based on the first voltage, a second voltage and a data voltage to compensate for a threshold voltage of the driving transistor with a gate-to-source voltage of the driving transistor when the OLED is driven by the driving transistor to emit light;
• and
• a touch controlling circuit directly connected to the data voltage and a touch signal reading line, wherein the touch controlling circuit includes a touch sensor and is configured to, based on the first scanning signal and the second scanning signal, sense via the touch sensor whether or not a touch has been detected by the touch sensor and transmit a corresponding touch sensing signal to the touch signal reading line.