Display substrate, display device, and method for manufacturing display substrate

A display device, comprising a display substrate, wherein the display substrate comprises:

• a base substrate;
• a plurality of island regions located on one side of the base substrate;
• an empty region located between adjacent island regions;
• a plurality of bridge regions, connecting the adjacent island regions, wherein each island region of the plurality of island regions comprises at least one pixel, and each bridge region of the plurality of bridge regions comprises signal lines connecting pixels in the adjacent island regions;
• a first inorganic encapsulation layer, covering pixels of the island regions and the signal lines in the bridge regions;
• a first organic encapsulation layer, covering the first inorganic encapsulation layer;
• and
• a plurality of insulation layers, located between the first inorganic encapsulation layer and the base substrate in the bridge regions;
• wherein at least one insulation layer of the plurality of insulation layers has at least one first groove recessed to one side of the base substrate in the bridge regions;
• and
• the first inorganic encapsulation layer has corresponding concave second grooves at positions corresponding to the at least one first groove, the second grooves enable two adjacent island regions to communicate, and are configured to make a printing liquid flow to the adjacent island regions when forming the printing liquid of the first organic encapsulation layer of a current island region.