Display panels and manufacturing methods thereof and display apparatuses

A manufacturing method for a display panel, comprising:

• providing a substrate, wherein the substrate comprises a predetermined hole region, a first adjacent region surrounding the predetermined hole region, a second adjacent region surrounding the first adjacent region, and a display region surrounding the second adjacent region;
• forming a plurality of pixel structures arranged in an array in the display region, and forming a protruding ring in the second adjacent region;
• forming an encapsulation layer on the pixel structures arranged in an array and on sides of the protruding ring that are away from the substrate, wherein the protruding ring and a part of the encapsulation layer covering the protruding ring form a dam;
• and
• filling, with a semi-solid sealant, the first adjacent region and the predetermined hole region that are enclosed by the dam, forming an opening in the semi-solid sealant, and fully curing the semi-solid sealant to form a solid sealant, wherein the opening is configured to release stress generated by the semi-solid sealant during the full curing.

A display apparatus, comprising:

• a display panel, comprising:
• a substrate, comprising a predetermined hole region, a first adjacent region surrounding the predetermined hole region, a second adjacent region surrounding the first adjacent region, and a display region surrounding the second adjacent region;
• a plurality of pixel structures arranged in an array and located in the display region;
• a protruding ring, located in the second adjacent region;
• an encapsulation layer, covering the pixel structures arranged in an array and sides of the protruding ring that are away from the substrate, wherein the protruding ring and a part of the encapsulation layer covering the protruding ring form a dam;
• a solid sealant, filling the first adjacent region and the predetermined hole region that are enclosed by the dam;
• and
• an opening, located in the solid sealant, and configured to release stress generated by the solid sealant during full curing;
• and
• one or more photosensitive elements disposed on a back side of the display panel and aligned with the predetermined hole region;
• wherein the first adjacent region is a non-closed ring surrounding the predetermined hole region, the second adjacent region is a non-closed ring surrounding the first adjacent region, and the display region is a non-closed ring surrounding the second adjacent region.