Pixel driving circuit and control method thereof

A pixel driving circuit, comprising:

• a signal driving module connected to scanning signal lines and data signal lines for driving a light emitting diode of the signal driving module to emit light based on the scanning signal lines and the data signal lines;
• a voltage detection module electrically connected to the signal driving module for collecting a detection voltage of the light emitting diode of the signal driving module and comparing the detection voltage with a reference voltage to generate a control signal;
• and
• a short circuit processing module electrically connected to the signal driving module and the voltage detection module for controlling the light emitting diode of the signal driving module to be turned off or on based on the control signal;
• wherein, the scanning signal lines include a first scanning signal line and a second scanning signal line, and the signal driving module includes:
• a first switching transistor, wherein a gate of the first switching transistor is electrically connected to the first scanning signal line, one of a source and a drain of the first switching transistor is electrically connected to the data signal line, and another of the source and the drain of the first switching transistor is electrically connected to a first node;
• a driving transistor, wherein a gate of the driving transistor is electrically connected to the first node, one of a source and a drain of the driving transistor is electrically connected to a second node, and another of the source and the drain of the driving transistor is electrically connected to a power signal terminal;
• a storage capacitor, wherein one terminal of the storage capacitor is electrically connected to the first node, and another terminal of the storage capacitor is electrically connected to the second node;
• a light emitting diode, wherein an anode of the light emitting diode is electrically connected to the second node, and a cathode of the light emitting diode is electrically connected to a ground terminal;
• and
• a second switching transistor, wherein a gate of the second switching transistor is electrically connected to the second scanning signal line, one of a source and a drain of the second switching transistor is electrically connected to the second node, and another of the source and the drain of the second switching transistor is electrically connected to the voltage detection module;
• wherein the short circuit processing module is connected in series between any adjacent two of the power signal terminal, the driving transistor, the light emitting diode, and the ground terminal;
• wherein, the voltage detection module includes:
• a controller electrically connected to the short circuit processing module for detecting the detection voltage of the light emitting diode of the signal driving module and comparing the detection voltage with the reference voltage to generate the control signal;
• a reference switch, wherein one terminal of the reference switch is electrically connected to a third node, another terminal of the reference switch is electrically connected to the controller and a reference voltage terminal, and another of the source and the drain of the second switching transistor is electrically connected to the third node;
• and
• a sampling switch, wherein one terminal of the sampling switch is electrically connected to the third node, and another terminal of the sampling switch is electrically connected to the controller.