Organic light-emitting display panel and preparation method thereof, and display device

A preparation method of an organic light-emitting display panel, comprising:

• providing a base substrate;
• forming a plurality of touch electrode wirings, an organic functional layer, and a plurality of first electrodes sequentially on the base substrate, the plurality of the touch electrode wirings being electrically insulated from each other, the plurality of the first electrodes being electrically insulated from each other, wherein the plurality of the touch electrode wirings and the plurality of the first electrodes are in a one-to-one correspondence;
• forming a first encapsulation structure on a side of the plurality of the first electrodes away from the base substrate, and then using a laser irradiation process to electrically connect respective first electrodes with the touch electrode wirings corresponding thereto by via holes passing through the organic functional layer;
• and
• after forming the organic functional layer and before forming the plurality of the first electrodes, the method further comprises:
• forming a plurality of spacers on the organic functional layer, wherein each of the plurality of the spacers has a longitudinal cross-section in a shape of an inverted trapezoid,
• wherein the forming the plurality of the first electrodes comprises:
• forming a first electrode layer by an evaporation method, wherein the first electrode layer cracks at edges of the plurality of the spacers to form the plurality of the first electrodes being electrically insulated from each other.