Display panel, method of manufacturing display panel

A display panel, comprising:

• a substrate;
• a conducting layer located on a side of the substrate, the conducting layer comprising a plurality of conducting traces spaced apart from one another;
• an insulating layer located on a side of the conducting layer away from the substrate, the insulating layer comprising a first surface away from the substrate and being provided with first through holes penetrating the insulating layer in a thickness direction of the substrate, each of the first through holes exposing a portion of a corresponding one of the conducting traces and comprising a sidewall and a first transition face arranged in the thickness direction of the substrate, and the first transition face connecting the sidewall with the first surface;
• and
• light-emitting units located on a side of the insulating layer away from the substrate, each of the light-emitting units comprising a first electrode, a light-emitting functional portion and a second electrode stacked in a direction away from the substrate, and at least a portion of the first electrode sequentially covering the first transition face and the sidewall, and being electrically connected to a corresponding one of the conducting traces;
• and
• an included angle between the first transition face and the first surface being greater than 90°.

A method of manufacturing a display panel, comprising:

• providing a substrate;
• forming a conducting layer on a side of the substrate, the conducting layer comprising a plurality of conducting traces spaced apart from one another;
• forming an insulating layer on a side of the conducting layer away from the substrate, the insulating layer comprising a first surface away from the substrate, and being provided with first through holes penetrating the insulating layer in a thickness direction of the substrate, each of the first through holes exposing a portion of a corresponding one of the conducting traces and comprising a sidewall and a first transition face arranged in the thickness direction of the substrate, and the first transition face connecting the sidewall with the first surface, and extending gradually away from a central axis of the first through hole in a direction away from the substrate;
• and
• forming light-emitting units on a side of the insulating layer away from the substrate, each of the light-emitting units comprising a first electrode, a light-emitting functional portion and a second electrode stacked in the direction away from the substrate, and at least a portion of the first electrode sequentially covering the first transition face and the sidewall, and being electrically connected to a corresponding one of the conducting traces.