Display substrate and display device

A display substrate, comprising a first substrate, and scanning lines and data lines arranged on the first substrate, wherein the scanning lines extend along a first direction and arranged along a second direction on the first substrate, the data lines are arranged along the first direction and extend along the second direction on the first substrate, and the first direction intersects the second direction;

• the display substrate comprises a plurality of pixel structures, each pixel structure comprises a plurality of sub-pixel structures, each sub-pixel structure comprises a common electrode and a pixel electrode, and an orthogonal projection of the common electrode onto the first substrate overlaps with an orthogonal projection of the pixel electrode onto the first substrate;
• the sub-pixel structures comprise a target sub-pixel structure, the common electrode of the target sub-pixel structure comprises a first portion, a second portion, a third portion, and a fourth portion, and the first portion and the second portion are arranged along the first direction and extend along the second direction;
• the first portion is coupled to the second portion through the third portion at a side away from the scanning line corresponding to the target sub-pixel structure;
• and
• the fourth portion is coupled to the first portion at a side of the first portion close to the second portion and at a side close to the scanning line corresponding to the target sub-pixel structure, and the fourth portion is separated from the second portion.