Display substrate and manufacture method thereof, display device

A display substrate, comprising a display region and a peripheral region at a periphery of the display region, wherein the peripheral region comprises a first scan driving circuit and a second scan driving circuit that are on a first side of the display region, the first scan driving circuit is on a side of the second scan driving circuit close to the display region, and the peripheral region further comprises a binding region on a second side, which is adjacent to the first side, of the display region, and the binding region comprises a plurality of contact pads, and the plurality of contact pads are configured to be connected with power lines;

• the peripheral region comprises an organic insulation layer, the organic insulation layer at least partially covers the first scan driving circuit and at least partially covers the second scan driving circuit, and comprises a first groove that is in a strip shape and extends substantially along a first direction to expose a portion between the first scan driving circuit and the second scan driving circuit, and
• the first groove also extends from the first side to the second side and extends substantially along a second direction on the second side, and the second direction intersects the first direction;
• a first width of a portion of the first groove on the first side is smaller than a second width of a portion of the first groove on the second side, and the second width is 2-3 times the first width.

A manufacture method of a display substrate, comprising forming a display region and a peripheral region at a periphery of the display region, wherein a first scan driving circuit and a second scan driving circuit are formed on a first side of the display region and in the peripheral region, the first scan driving circuit is formed on a side of the second scan driving circuit close to the display region, and a binding region is formed on a second side, which is adjacent to the first side, of the display region and in the peripheral region, the binding region comprises a plurality of contact pads, and the plurality of contact pads are configured to be connected with power lines;

• the manufacture method further comprises:
• forming an organic insulation layer in the peripheral region, wherein the organic insulation layer at least partially covers the first scan driving circuit and at least partially covers the second scan driving circuit, and comprises a first groove that is partially in a strip shape and extends substantially along a first direction to expose a portion between the first scan driving circuit and the second scan driving circuit, the first groove extends from the first side to the second side and extends substantially along a second direction on the second side, and the second direction is different from intersects the first direction;
• the manufacture method further comprises:
• providing a base substrate and forming a first power line of the power lines and a second power line of the power lines on the base substrate and in the peripheral region, wherein the second power line of the power lines is on a side of the first power line of the power lines away from the display region,
• wherein in a direction perpendicular to the base substrate, the first groove does not overlap with the second power line of the power lines.