Pixel driving circuit, driving method thereof, and display panel

A driving method of a pixel driving circuit, comprising:

• providing a pixel driving circuit, wherein the pixel driving circuit comprises a first data input module, a second data input module, a display driving module, and a light emitting module;
• the display driving module comprises a driving transistor, and the driving transistor is controlled by a potential generated at the first node when the first data signal and the second data signal are coupled to the first node;
• the light emitting module comprises a light emitting element, and an anode of the light emitting element is connected to a second node, and a cathode of the light emitting element is grounded;
• the first data input module comprises a first transistor and a first storage capacitor;
• a first pole of the first transistor is connected to the first node, a second pole of the first transistor is connected to the first data signal, and a gate of the first transistor is connected to a first scan signal;
• a first storage capacitor, one end of the first storage capacitor is connected to the first node, and another end of the first storage capacitor is directly grounded;
• the second data input module comprises a second transistor and a second storage capacitor, a first pole of the second transistor is connected to a third node, a second pole of the second transistor is connected to the second data signal, and a gate of the second transistor is connected to a second scan signal;
• one end of the second storage capacitor is connected to the third node, and the other end of the second storage capacitor is connected to the first node;
• the driving method comprises within a display period of a frame image:
• the first data input module couples the first data signal to the first node;
• the second data input module couples the second data signal to the first node after the first data signal is coupled to the first node by the first data input module, so that a voltage at the first node becomes superposition of a voltage of the first data signal and a voltage of the second data signal;
• the display driving module transmits the power signal to the second node;
• the light emitting module generates a working current under the control of the power signal coupled to the second node and emit light according to the working current.

A display panel, comprising a pixel driving circuit, wherein the pixel driving circuit comprises a first data input module, a second data input module, a display driving module and a light emitting module;

• the first data input module is configured to couple a first data signal to a first node;
• the second data input module is configured to couple a second data signal to the first node after the first data signal is coupled to the first node by the first data input module, so that a voltage at the first node becomes superposition of a voltage of the first data signal and a voltage of the second data signal;
• the display driving module comprises a driving transistor, and the driving transistor is controlled by a potential generated at the first node when the first data signal and the second data signal are coupled to the first node, and is used to transmit a power signal to a second node;
• the light emitting module comprises a light emitting element, and an anode of the light emitting element is connected to the second node, and a cathode of the light emitting element is grounded, and the light emitting module is configured to generate a working current under the control of the power signal coupled to the second node and emit light according to the working current;
• the first data input module comprises a first transistor and a first storage capacitor;
• a first pole of the first transistor is connected to the first node, a second pole of the first transistor is connected to the first data signal, and a gate of the first transistor is connected to a first scan signal;
• a first storage capacitor, one end of the first storage capacitor is connected to the first node, and another end of the first storage capacitor is directly grounded;
• and
• the second data input module comprises a second transistor and a second storage capacitor, a first pole of the second transistor is connected to a third node, a second pole of the second transistor is connected to the second data signal, and a gate of the second transistor is connected to a second scan signal;
• one end of the second storage capacitor is connected to the third node, and the other end of the second storage capacitor is connected to the first node.