Abstract: A display panel, a method for manufacturing the display panel, and a display device are provided. The display panel includes: a base substrate; at least one insulating layer arranged on the base substrate; an isolation pillar arranged on a side of the insulating layer distal to the base substrate, wherein a side surface of the isolation pillar is provided with an undercut structure; a light-emitting functional layer arranged on a side of the isolation pillar distal to the base substrate, wherein the light-emitting functional layer is disconnected at a position of the undercut structure; and an inorganic encapsulation layer arranged on a side of the light-emitting functional layer distal to the base substrate: wherein a first insulating layer in the at least one insulating layer is located in a first region where the isolation pillar is located.

Abstract: A display substrate includes a substrate, a reflective layer, a plurality of first signal lines, and an active layer that are stacked in sequence. The active layer includes a plurality of active pairs, and an active pair includes two active patterns. An orthographic projection of an active pattern on the substrate overlaps with an orthographic projection of a first signal line on the substrate, and a portion of the active pair that does not overlap with the first signal line has a gap. An orthographic projection of the reflective layer on the substrate covers at least part of a gap of at least one active pair.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate, sub-pixels and an isolation structure, each sub-pixel includes a light-emitting functional layer including film layers. The isolation structure is between adjacent sub-pixels, the isolation structure includes a first sub-isolation structure and a second sub-isolation structure, the first sub-isolation structure is between the second sub-isolation structure and the base substrate, and the size of the first sub-isolation structure is smaller than that of the second sub-isolation structure, the second sub-isolation structure includes a protruding portion; or, a slope angle of a side surface of the first sub-isolation structure is greater than 60 degrees and less than 120 degrees, and/or, a slope angle of a side surface of the second sub-isolation structure is greater than 60 degrees and less than 120 degrees; and at least one film layer is disconnected at the isolation structure.