Display substrate, manufacturing method thereof and display panel

A manufacturing method of a display substrate, wherein the display substrate is divided into a display area and a non-display area surrounding the display area, the display area comprises an emitting area and a non-emitting area, and the manufacturing method of the display substrate comprises:

• forming a first electrode and a first auxiliary cathode spaced apart from each other on a base through a single patterning process, wherein the first electrode is located in the display area and the first auxiliary cathode is located in the non-emitting area;
• forming a second electrode and a second auxiliary cathode spaced apart from each other through a single patterning process, wherein the second electrode and the second auxiliary cathode are formed on sides of the first electrode and the first auxiliary electrode far away from the base, the second electrode is located in the display area, and the second auxiliary cathode is located in the non-emitting area;
• and projections of the first auxiliary cathode and the second auxiliary cathode on the base are in a mesh structure;
• forming a pixel definition layer on sides of the second electrode and the second auxiliary cathode far away from the base, wherein the pixel definition layer is at least located in the non-emitting area;
• and
• forming a cathode on sides of the pixel definition layer far away from the base, wherein the cathode at least covers the display area,
• wherein the cathode, the first auxiliary cathode and the second auxiliary cathode are electrically connected.