Display panel and preparation method thereof, and display device

A preparation method of a display panel, comprising:

• forming an electroluminescent device on a display area of a base substrate;
• forming an inorganic packaging layer and an organic packaging layer sequentially on the electroluminescent device to form a packaging structure;
• wherein the inorganic packaging layer and the organic packaging layer are alternately stacked, and
• the inorganic packaging layer extends from the display area to a hole area located at the display area;
• and
• forming an organic layer on the packaging structure in an isolation area between the display area and the hole area.

A display device, comprising a display panel, wherein the display panel comprises a base substrate, and has:

• a display area,
• a peripheral area surrounding the display area,
• a hole area located at the display area, and
• an isolation area located between the hole area and the display area, and
• wherein the display area comprises:
• an electroluminescent device located on the base substrate, and
• a packaging structure for sealing the electroluminescent device, the packaging structure comprises an inorganic packaging layer and an organic packaging layer alternately stacked, and the inorganic packaging layer extends to the hole area;
• and
• wherein the isolation area comprises an organic layer disposed on the inorganic packaging layer.