Display substrate and preparation method therefor, and display apparatus

A display substrate, comprising:

• a driving backplane;
• a first electrode layer located at one side of the driving backplane, the first electrode layer comprising a plurality of first electrodes distributed in an array;
• a leakage cutoff layer located at one side of the first electrode layer away from the driving backplane, the leakage cutoff layer being located between two adjacent first electrodes, and there being a cutoff groove and cutoff protrusions located at both sides of the cutoff groove on a surface of one side of the leakage cutoff layer away from the driving backplane;
• a light emitting functional layer located at one side of the leakage cutoff layer and the first electrode layer away from the driving backplane;
• and
• a second electrode layer located at one side of the light emitting functional layer away from the driving backplane.

A method for preparing a display substrate, comprising:

• forming a first electrode layer on a surface of one side of a driving backplane, the first electrode layer comprising a plurality of first electrodes distributed in an array;
• forming a leakage cutoff layer on the surface of the driving backplane, on which the first electrode layer is formed, the leakage cutoff layer being located between two adjacent first electrodes, and there being a cutoff groove and cutoff protrusions located at both sides of the cutoff groove on a surface of one side of the leakage cutoff layer away from the driving backplane;
• forming a light emitting functional layer at one side of the leakage cutoff layer and the first electrode layer away from the driving backplane;
• and
• forming a second electrode layer at one side of the light emitting functional layer away from the driving backplane.