Display substrate, working method thereof, and display device

A working method of a display substrate, wherein:

• the display substrate comprises K pixel rows and K is a positive integer greater than 1;
• at least one pixel row comprises an initial signal line, a scan signal line, and a plurality of sub-pixels disposed sequentially along an extension direction of the initial signal line and the scan signal line;
• the initial signal line comprises a third initial signal line, the scan signal line comprises a second scan signal line, and at least one sub-pixel comprises a pixel drive circuit, the pixel drive circuit at least comprises a storage capacitor, a second transistor, a third transistor as a drive transistor and an eighth transistor as an initialization transistor;
• in a same sub-pixel, a first plate of the storage capacitor is connected to a first electrode of the second transistor and a control electrode of the driving transistor, and a second electrode of the second transistor is connected to a first electrode of the driving transistor;
• in at least a pixel row, the eighth transistor is connected with the third initial signal line, the second scan signal line, and a second electrode of the drive transistor, the working method comprising:
• providing, by the eighth transistor, an initial signal of the third initial signal line to a second electrode of the drive transistor under control of the second scan signal line,
• wherein:
• the display substrate further comprises a plurality of light emitting elements corresponding to a plurality of pixel drive circuits, a first scan signal line, a third scan signal line, a fourth scan signal line, a first initial signal line, a second initial signal line, a first power line, a light emitting control line, and a data signal line;
• the pixel drive circuits are configured to drive the light emitting elements to emit light, and the pixel drive circuit comprises a first reset sub-circuit, a second reset sub-circuit, a third reset sub-circuit, a write-in sub-circuit, a compensation sub-circuit, a drive sub-circuit and a light emitting sub-circuit;
• the first reset sub-circuit comprises a first transistor, the second reset sub-circuit comprises a seventh transistor, the third reset sub-circuit comprises the eighth transistor, the write-in sub-circuit comprises a fourth transistor, the compensation sub-circuit comprises the second transistor and the storage capacitor, the drive sub-circuit comprises the third transistor, and the light emitting sub-circuit comprises a fifth transistor and a sixth transistor;
• in a direction perpendicular to the display substrate, the display substrate comprises a base substrate and a shielding layer, a first semiconductor layer, a first conductive layer, a second conductive layer, a second semiconductor layer, a third conductive layer, a fourth conductive layer and a fifth conductive layer which are sequentially stacked on the base substrate;
• and
• the first semiconductor layer comprises active layers of the third transistor to the eighth transistor;
• the first conductive layer comprises control electrodes of the third transistor to the eighth transistor, a first electrode plate of the storage capacitor, and the first initial signal line;
• the second conductive layer comprises a second electrode plate of the storage capacitor;
• the second semiconductor layer comprises active layers of the first transistor and the second transistor;
• the third conductive layer comprises the first scan signal line, the third scan signal line, and the second initial signal line;
• the fourth conductive layer comprises first electrodes and second electrodes of the first transistor to the eighth transistor, and a connection electrode of the second electrode plate, and the third initial signal line;
• and the fifth conductive layer comprises the data signal line, the first power line and an anode connection electrode of the light emitting element.