Pixel circuit, display panel, display device and driving method

An organic light-emitting diode pixel circuit comprising a signal pre-storage module, a drive module, an organic light-emitting diode, and a drive transistor;

• the signal pre-storage module comprising:
• a first end for receiving a data signal, in a current frame of image signal, to be displayed by a pixel;
• a second end for receiving a gate line scan signal configured to enable a gate line connected with the pixel;
• a third end connected with a second end of the drive module;
• and
• a fourth end connected with a source of the drive transistor;
• the drive module comprising:
• a first end connected with a gate of the drive transistor, and
• a third end connected with the source of the drive transistor;
• wherein:
• the source of the drive transistor receives a first drive signal, and a drain of the drive transistor is connected with an anode of the organic light-emitting diode, and a cathode of the organic light-emitting diode receives a second drive signal;
• the signal pre-storage module is configured to store the data signal received by the first end of the signal pre-storage module, when a voltage of the first drive signal is higher than a voltage of the second drive signal and a gate line connected with the pixel is enabled;
• and
• the drive module is configured to drive the drive transistor by the first end of the drive module using a previous drive signal to enable the organic light-emitting diode to emit light when the voltage of the first drive signal is higher than the voltage of the second drive signal, the previous drive signal being generated by the drive module from a signal, in a previous frame of image signal;
• and to generate a current drive signal from the data signal stored in the signal pre-storage module, when the voltage of the first drive signal is not higher than the voltage of the second drive signal.