Display substrate and method for manufacturing same, and display device

A display substrate, comprising:

• a base substrate with an encapsulation region and an edge region on a periphery of the encapsulation region, wherein the encapsulation region comprises a display region and a peripheral region surrounding the display region, and the edge region comprises a bonding region on at least one side of the base substrate;
• a plurality of stacked inorganic film layers on a side of the base substrate;
• a plurality of first grooves, at the edge region, spaced apart from each other in a direction distal from the encapsulation region, and extending along a periphery of the base substrate, wherein the plurality of first grooves run through at least one inorganic film layer of the plurality of stacked inorganic film layers, and orthographic projections of the plurality of first grooves on the base substrate have a non-overlapping region with the bonding region, and distances between the plurality of first grooves and the display region are larger than distances between the plurality of first grooves and an edge of the base substrate;
• and
• an organic layer, covering the plurality of first grooves;
• wherein the plurality of stacked inorganic film layers further comprise:
• a buffer layer between the base substrate and the at least one inorganic film layer, the buffer layer comprising a first buffer pattern;
• wherein
• an orthographic projection of the first buffer pattern on the base substrate covers the encapsulation region and a part of the edge region, and
• an orthographic projection of the organic layer on the buffer layer partially overlaps the first buffer pattern and a border line of the first buffer pattern.