Display substrate and display device

A display substrate, comprising a display region and a peripheral region surrounding the display region;

• wherein the display region comprises a plurality of gate lines, a plurality of data lines, and a plurality of pixel units, and each of the plurality of pixel units comprises a driving transistor and a pixel electrode that are connected to each other;
• wherein the peripheral region comprises signal lines and at least one electrostatic discharge structure for performing electrostatic discharge on the signal lines;
• wherein the electrostatic discharge structure comprises a first electrostatic discharge pattern connected to the signal lines;
• and a second electrostatic discharge pattern arranged in a different layer from the first electrostatic discharge pattern, wherein a first insulating layer is arranged between the second electrostatic discharge pattern and the first electrostatic discharge pattern, so as to insulate the first electrostatic discharge pattern from the second electrostatic discharge pattern, and an orthogonal projection of the second electrostatic discharge pattern on a base substrate of the display substrate at least partially overlaps an orthogonal projection of the first electrostatic discharge pattern on the base substrate;
• wherein the orthogonal projection of the first electrostatic discharge pattern on the base substrate is in a shape of continuous line with gaps between linear portions, and the first electrostatic discharge pattern is arranged in parallel to at least a part of the signal lines;
• the orthogonal projection of the second electrostatic discharge pattern on the base substrate is in a shape of continuous line with gaps between linear portions, and the second electrostatic discharge pattern is closed end to end;
• and
• wherein the electrostatic discharge structure further comprises a comb-shaped third electrostatic discharge pattern, comprising a plurality of first comb teeth and a first connection portion for connecting one end of the plurality of first comb teeth, wherein the first connection portion is connected to the signal lines;
• and a fourth electrostatic discharge pattern, located on a side of the plurality of first comb teeth of the third electrostatic discharge pattern away from the first connection portion, wherein a third insulation layer is arranged between the fourth electrostatic discharge pattern and the third electrostatic discharge pattern.