Pixel driving circuit

A pixel driving circuit, comprising:

• a driving thin-film transistor;
• a regulating capacitor, wherein a first terminal of the regulating capacitor is connected to a control terminal of the driving thin-film transistor, and a second terminal of the regulating capacitor is connected to a first terminal of the driving thin-film transistor;
• a first capacitor, wherein a first terminal of the first capacitor is connected to the control terminal of the driving thin-film transistor, and a second terminal of the first capacitor is connected to a second terminal of the driving thin-film transistor;
• a light-emitting device, wherein a first terminal of the light-emitting device is connected to the second terminal of the driving thin-film transistor, and a second terminal of the light-emitting device is grounded;
• and
• a first switch, wherein a first terminal of the first switch is connected to a first signal terminal, and a second terminal of the first switch is connected to the control terminal of the driving thin-film transistor.