Pixel driving circuit, display panel and display device

A display panel, comprising:

• a light-emitting element;
• and
• a plurality of pixel driving circuits electrically connected to the light-emitting element,
• wherein:
• each of at least a partial number of the plurality of the pixel driving circuits includes:
• a driving module, wherein a control terminal of the driving module is directly electrically connected to a first node, a first terminal of the driving module is directly electrically connected to a second node, and a second terminal of the driving module is directly electrically connected to a third node;
• a voltage writing module, wherein a first terminal of the voltage writing module is directly electrically connected to a preset potential signal line, a second terminal of the voltage writing module is directly electrically connected to the second node, and a control terminal of the voltage writing module directly electrically connected to a first control signal line;
• a potential holding module directly connected between the first node and the second node;
• and
• a potential coupling module including a coupling capacitor, wherein a first terminal of the coupling capacitor is directly electrically connected to the first control signal line, and a second terminal of the coupling capacitor is directly electrically connected to at least one of the second node and the third node.

A display device, comprising:

• a display panel including a light-emitting element;
• and
• a plurality of pixel driving circuits electrically connected to the light-emitting element,
• wherein each of at least a partial number of the plurality of the pixel driving circuits includes:
• a driving module, wherein a control terminal of the driving module is directly electrically connected to a first node, a first terminal of the driving module is directly electrically connected to a second node, and a second terminal of the driving module is directly electrically connected to a third node;
• a voltage writing module, wherein a first terminal of the voltage writing module is directly electrically connected to a preset potential signal line, a second terminal of the voltage writing module is directly electrically connected to the second node, and a control terminal of the voltage writing module directly electrically connected to a first control signal line;
• a potential holding module directly connected between the first node and the second node;
• and
• a potential coupling module including a coupling capacitor, wherein a first terminal of the coupling capacitor is directly electrically connected to the first control signal line, and a second terminal of the coupling capacitor is directly electrically connected to at least one of the second node and the third node.