Pixel drive circuit, display device and driving method

A pixel drive circuit corresponding to a GOA unit, wherein the pixel drive circuit comprises:

• a shift register circuit and a pixel compensation circuit;
• the shift register circuit comprising a signal input terminal, a signal output terminal and at least one clock signal input terminal, the signal input terminal being configured to receive an input signal, the clock signal input terminal being configured to receive a clock signal, the shift register circuit being configured to process the input signal based on the clock signal and generate a first control signal and transmit the first control signal to the signal output terminal, wherein the first control signal comprises a voltage compensation signal for compensating for a threshold voltage of the pixel compensation circuit and a time adjustment signal for adjusting a light-emitting time of the pixel compensation circuit;
• the shift register circuit further comprising a voltage adjustment module, the voltage adjustment module being connected to the signal output terminal of the shift register circuit, the voltage adjustment module being configured to perform pulse width modulation on the time adjustment signal in the first control signal generated by the shift register circuit within a predetermined time period, so that the light-emitting time of the pixel compensation circuit varies with the pulse width modulation, wherein the predetermined time period is a time period between an end of writing all data signals of one frame and a start of a control signal of a next frame;
• the signal output terminal of the shift register circuit being connected to a light-emitting control terminal of the pixel compensation circuit, the light-emitting control terminal changing a turn-on time of a light-emitting module of the pixel compensation circuit correspondingly based on a pulse width variation of the time adjustment signal in the received first control signal so as to adjust a light-emitting time of a light-emitting component in the corresponding GOA unit,
• wherein the voltage adjustment module comprises a voltage adjustment control terminal, a voltage adjustment input terminal, and a voltage adjustment output terminal, the voltage adjustment input terminal is configured to receive a threshold value voltage signal, the voltage adjustment output terminal is connected to the signal output terminal of the shift register circuit, the voltage adjustment control terminal is configured to receive an enable signal within the predetermined time period, and perform pulse width modulation on the time adjustment signal through the threshold value voltage signal under a control of the enable signal.