Display substrate, method for manufacturing the same, and display panel

A method for manufacturing a display substrate, comprising:

• providing a flexible substrate, the flexible substrate comprising a bending region;
• forming a first groove in the bending region;
• forming a first flexible layer on at least an inner wall of the first groove;
• forming at least one rib on the first flexible layer at a bottom of the first groove;
• forming a wiring layer that covers the rib on the first flexible layer, so that the wiring layer is formed with alternating protrusions and recessions, and an orthographic projection of the protrusions on the flexible substrate and an orthographic projection of the rib on the flexible substrate at least partially overlap;
• and
• forming a planarization layer having at least one second groove on the wiring layer,
• wherein the second groove is formed in the planarization layer at a side of the planarization layer away from the flexible substrate, and an orthographic projection of the second groove on the flexible substrate and the orthographic projection of the rib on the flexible substrate at least partially overlap.