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

A method of manufacturing a display substrate, comprising:

• forming a base substrate on a back plate;
• forming a first film layer on a side of the base substrate away from the back plate;
• forming an adhesive material portion on a side of the first film layer away from the base substrate;
• forming a second film layer on a side of the adhesive material portion away from the base substrate;
• and
• peeling the base substrate from the back plate, wherein the first film layer, the adhesive material portion and the second film layer are formed on the base substrate;
• wherein the first film layer has a first surface facing the second film layer, the second film layer has a second surface facing the first film layer, and the first surface is at least partially in contact with the second surface;
• wherein a non-flat contact area is formed between the first film layer and the second film layer, and the adhesive material portion is arranged at least partially in the non-flat contact area to adhere the first film layer and the second film layer;
• and
• wherein an adhesion between the adhesive material portion and the first film layer is greater than an adhesion between the first film layer and the second film layer, and an adhesion between the adhesive material portion and the second film layer is greater than the adhesion between the first film layer and the second film layer.