Display substrate and display device

A display substrate, comprising:

• a base substrate and a plurality of sub-pixels arranged on the base substrate, wherein the display substrate further includes a data line;
• the sub-pixel include a sub-pixel driving circuit, the sub-pixel driving circuit includes:
• a first transistor, a fourth transistor, a driving transistor, and a first conductive connection portion;
• a first electrode of the first transistor is coupled to a second electrode of the driving transistor, a second electrode of the first transistor and a first end portion of the first conductive connection portion are arranged at different layers, the second electrode of the first transistor and the first end portion of the first conductive connection portion are coupled through a via hole;
• a second end portion of the first conductive connection portion is coupled to a gate electrode of the driving transistor;
• a first electrode of the fourth transistor is coupled to a corresponding data line, a second electrode of the fourth transistor is coupled to a first electrode of the driving transistor;
• at least part of an orthographic projection of the gate electrode of the first transistor on the base substrate is located between an orthographic projection of the first end portion on the base substrate and an orthographic projection of the gate electrode of the driving transistor on the base substrate;
• wherein the first conductive connection portion includes at least a part extending along a first direction;
• the second electrode of the first transistor includes a first portion, a second portion and a third portion coupled sequentially, each of the first portion and the third portion includes at least a part extending along a second direction, the second portion includes at least a part extending along the first direction, the first direction intersects the second direction;
• the third portion is coupled to the first end portion;
• wherein the display substrate further includes an initialization signal line;
• the sub-pixel driving circuit further includes a second transistor, and the first electrode of the second transistor is coupled to the initialization signal line, and the second electrode of the second transistor is coupled to the first end portion;
• an orthographic projection of the first end portion on the base substrate is located between an orthographic projection of the first electrode of the second transistor on the base substrate and the orthographic projection of the gate electrode of the first transistor on the base substrate;
• wherein the sub-pixel further includes:
• a shielding pattern, wherein an orthographic projection of the shielding pattern on the base substrate at least partially overlaps an orthographic projection of the second electrode of the first transistor on the base substrate, and also at least partially overlaps an orthographic projection of the second electrode of the second transistor on the base substrate.