Display substrate and method for manufacturing the same, and display device

A display substrate, comprising:

• a base substrate;
• a plurality of sub-pixels, located on the base substrate, wherein each of the plurality of sub-pixels comprises a light emitting element, and the light emitting element comprises a light emitting functional layer, and a first electrode and a second electrode located on two sides of the light emitting functional layer, wherein the first electrode is located between the light emitting functional layer and the base substrate, and the light emitting functional layer comprises a conductive sub-layer;
• and
• an isolation structure, located on the base substrate,
• wherein the isolation structure is located between adjacent sub-pixels of the plurality of sub-pixels, and the conductive sub-layer in the light emitting functional layer is disconnected at a position where the isolation structure is located,
• the plurality of sub-pixels comprise a plurality of first color sub-pixels, a plurality of second color sub-pixels, and a plurality of third color sub-pixels, and the isolation structure comprises a plurality of ring-shaped isolation parts, each of the plurality of ring-shaped isolation parts surrounds one of the plurality of first color sub-pixels, one of the plurality of second color sub-pixels, or one of the plurality of third color sub-pixels,
• wherein the light emitting functional layer comprises a first light emitting layer and a second light emitting layer located on two sides of the conductive sub-layer in a direction perpendicular to the base substrate, and the conductive sub-layer is a charge generation layer.