Display panel and preparation method therefor, and display device

A preparation method for a display panel, comprising:

• providing a substrate;
• forming a plurality of first electrodes on the substrate;
• forming an isolation structure on a side of the substrate, wherein the isolation structure is formed with at least one light-transmitting opening and a plurality of isolation openings, the isolation structure comprises a support portion facing the substrate and an isolation portion away from the substrate, a distance by which the isolation portion extends along and beyond an edge of the support portion is defined as a first spacing, and the first spacing located inside the light-transmitting opening is greater than the first spacing located inside an isolation opening;
• and
• forming a light-emitting functional layer and a second electrode in each of the isolation openings, wherein a first electrode, the light-emitting functional layer and the second electrode stacked at each isolation opening form a light-emitting device;
• wherein the first spacing at the isolation opening is less than the first spacing at the light-transmitting opening after all the light-emitting devices are formed.

A display device, comprising:

• a display panel comprising:
• a substrate;
• an isolation structure located on the substrate and defining at least one light-transmitting opening and a plurality of isolation openings;
• and
• a plurality of light-emitting devices at least partially located inside the isolation openings;
• wherein the isolation structure comprises a support portion and an isolation portion arranged on the support portion, a distance by which the isolation portion extends along and beyond an edge of the support portion is defined as a first spacing, and the first spacing located inside the light-transmitting opening is greater than the first spacing located inside an isolation opening.