Manufacturing method of display panel and display panel

A manufacturing method of a display panel, comprising following steps:

• providing a display panel main body, the display panel main body comprising at least one metal pad located in an outer pin joint area, and a side surface of the at least one metal pad being exposed to an outside;
• forming a protective member covering the side surface of the at least one metal pad on a side surface of the display panel main body;
• patterning the protective member to expose the side surface of the at least one metal pad;
• forming a conductive layer on an exposed surface of the at least one metal pad;
• and forming a chip on film on a surface of the conductive layer away from the at least one metal pad,
• wherein the protective member comprises an adhesive layer and a protective film, the adhesive layer is attached between the side surface of the display panel main body and the protective film, and the adhesive layer covers the side surface of the at least one metal pad, and
• wherein a release film is attached to a side of the adhesive layer away from the protective film before forming the protective member, wherein forming the protective member covering the side surface of the at least one metal pad on the side surface of the display panel main body comprising:
• tearing off the release film and attaching the protective member to the side surface of the display panel main body.