Touch substrate and display device

A touch substrate, comprising a touch area and a peripheral area surrounding the touch area, wherein the touch substrate further comprises a touch electrode and a touch signal line that are coupled to each other;

• at least portion of the touch electrode is located in the touch area;
• at least portion of the touch signal line is located in the peripheral area, the touch signal line comprises a first part, a second part and a third part that are connected end to end in sequence, each of the first part and the third part includes a first edge and a third edge, the second part includes a second edge, two ends of the second edge are connected to the first edge and the third edge respectively, an extension of the second edge intersects an extension direction of the first edge or an extension direction of the third edge,
• wherein the touch signal line comprises a first conductive layer and a second conductive layer arranged in different layers and a touch insulation layer arranged between the first conductive layer and the second conductive layer, each of the first conductive layer and the second conductive layer includes the second part, the touch insulation layer comprises a first via hole, the second part in the first conductive layer is coupled to the second part in the second conductive layer through the first via hole, an orthographic projection of the first via hole onto a base substrate of the touch substrate overlaps with an orthographic projection of the second part onto the base substrate.