Display panel, method for manufacturing same, and display device

A display panel, comprising:

• a substrate, comprising a display region and a non-display region disposed on an outer periphery of the display region;
• a light-emitting device and a packaging layer, disposed on the substrate;
• and
• at least one retaining wall and a signal trace, disposed on a side of the packaging layer proximate to the substrate;
• wherein the light-emitting device is disposed within the display region, the at least one retaining wall and the signal trace are disposed within the non-display region, and the signal trace is electrically connected to the light-emitting device and is provided with at least one aperture, wherein an orthographic projection of the at least one aperture on the substrate is disposed within an orthographic projection of the at least one retaining wall on the substrate;
• and
• wherein each of the at least one retaining wall comprises at least two organic insulating layers that are laminated, the display panel further comprises a third conductive layer between two adjacent organic insulating layers in the at least one retaining wall, and the third conductive layer comprises the signal trace;
• wherein the at least one retaining wall comprises a first retaining wall and a second retaining wall, and at least two organic insulating layers in the first retaining wall comprise a first organic insulating layer, a second organic insulating layer and a pixel defining layer that are laminated;
• and
• wherein the third conductive layer is disposed between the first organic insulating layer and the second organic insulating layer, and the orthographic projection of the at least one aperture on the substrate is within an orthographic projection of the first retaining wall on the substrate so as to release the moisture absorbed by the first organic insulating layer;
• wherein the signal trace comprises at least one first power signal lead, two second power signal leads and a power connecting bus, wherein an extending direction of a length of the power connecting bus is parallel to an extending direction of a length of a part of the at least one retaining wall, the two second power signal leads are arranged at a same side of the power connecting bus and are arranged at two ends of the power connecting bus respectively along the extending direction of the length of the power connecting bus, and an extending direction of a length of each of the two second power signal leads is perpendicular to the extending direction of the length of the power connecting bus, wherein the power connecting bus and the two second power signal leads are all independent parts, and the power connecting bus is electrically connected to each of the two second power signal leads;
• the at least one aperture is respectively disposed in the at least one first power signal lead, the two second power signal leads and the power connecting bus;
• an orthographic projection of the at least one first power signal lead on the substrate comprises a first overlap region with the orthographic projection of the at least one retaining wall on the substrate, an orthographic projection of each of the two second power signal leads on the substrate comprises a second overlap region with the orthographic projection of the at least one retaining wall on the substrate, and an orthographic projection of the power connecting bus on the substrate comprises a third overlap region with the orthographic projection of the at least one retaining wall on the substrate;
• and
• the orthographic projection of the at least one aperture on the substrate is respectively disposed within the first overlap region, the second overlap region and the third overlap region.