Display panel and manufacturing method therefor, and display device

The display panel according to claim 31, wherein the conductive portion includes a first sub-conductive portion, a second sub-conductive portion and a third sub-conductive portion;

• wherein
• the first sub-conductive portion is located on a side of the conductive layer away from the connection portion, and is electrically connected to the conductive layer and the second sub-conductive portion;
• the second sub-conductive portion is located on the hole wall of the pattern recognition hole, and is electrically connected to the third sub-conductive portion;
• and
• the third sub-conductive portion is located on the surface of the connection portion away from the display substrate, and is in contact with the connection portion.

A manufacturing method of a display panel, comprising:

• manufacturing a display substrate, the display substrate having a pattern recognition region;
• forming a heat dissipation film on a non-light exit side of the display substrate;
• the heat dissipation film including an adhesive layer, a heat conduction layer and a conductive layer that are away from the display substrate in sequence;
• forming a pattern recognition hole in the heat dissipation film;
• the pattern recognition hole penetrating the adhesive layer, the heat conduction layer and the conductive layer;
• and an orthogonal projection of the pattern recognition hole on the display substrate being at least partially overlapped with the pattern recognition region;
• and
• forming a conductive portion;
• the conductive portion being disposed at least on a hole wall of the pattern recognition hole, and an end of the conductive portion being connected to the conductive layer, and another end of the conductive portion being connected to a portion of the display substrate exposed by the pattern recognition hole.