Display substrate and manufacturing method therefor, and display apparatus

A manufacturing method for a display substrate, comprising:

• providing a first base;
• forming a plurality of touch control signal lines on a side of the first base, lengths of at least two touch signal lines decreasing in sequence;
• and
• forming a plurality of touch units on a side of the plurality of touch signal lines away from the first base, a touch unit being electrically connected to a touch signal line;
• wherein resistances of at least two touch units increase in sequence, the at least two touch units in an increasing order of the resistances in sequence are electrically connected to the at least two touch signal lines in a decreasing order of the lengths in sequence, respectively;
• the plurality of touch units each include a touch electrode;
• and at least one touch unit of the at least two touch units further includes an auxiliary electrode that is stacked with and electrically connected to a touch electrode of the at least one touch unit;
• and
• wherein in a touch unit including an auxiliary electrode and a touch electrode, a surface of the auxiliary electrode proximate to the touch electrode is in direct contact with a surface of the touch electrode proximate to the auxiliary electrode, and the auxiliary electrode is located on a side of the touch electrode proximate to the first base;
• and
• forming the plurality of touch units on the side of the plurality of touch signal lines away from the first base includes:
• forming a planarization film on the side of the plurality of touch signal lines away from the first base;
• patterning the planarization film to form second via holes for exposing the plurality of touch signal lines in the planarization film, and to form a plurality of grooves on a surface of the planarization film away from the first base, so as to obtain a first planarization layer;
• forming a first conductive film on a side of the first planarization layer away from the first base;
• patterning the first conductive film, and reserving portions of the first conductive film located in the plurality of grooves, so as to obtain a plurality of auxiliary electrodes;
• forming a second conductive film on a side of the plurality of auxiliary electrodes away from the first base;
• and
• patterning the second conductive film to obtain a plurality of touch electrodes, wherein the auxiliary electrode is electrically connected to the touch electrode.