Organic light-emitting display apparatus and method of manufacturing the same

An organic light-emitting display device, comprising:

• a display substrate comprising a first surface;
• a sealing substrate comprising a second surface facing the first surface of the display substrate;
• a display unit between the first surface of the display substrate and the second surface of the sealing substrate, wherein the display unit comprises a plurality of organic light-emitting diodes (OLEDs) and a plurality of thin-film transistors (TFTs) each electrically connected to a corresponding one of the OLEDs, wherein the plurality of OLEDs defines a display area;
• a sealing material disposed between the display substrate and the sealing substrate, and surrounding the display area;
• and
• an insulating layer comprising a plurality of through holes disposed in a region corresponding to the sealing material, wherein a partition wall is disposed within each of the plurality of through holes such that each of the plurality of through holes is divided into a plurality of sub-through holes, wherein each partition wall comprises a first sub-partition wall and a second sub-partition wall that comprise an insulating material and intersect with each other to form an intersection point when viewed in a direction perpendicular to the first surface of the display substrate, wherein a first intersection point of the partition wall in a first through hole and a second intersection point of the partition wall in a second through hole are arranged along a direction from an edge of the display substrate to the display area when viewed in a direction perpendicular to the first surface of the display substrate.