Display device, method of fabricating the display device, and tiled display device including a plurality of display devices

A method of fabricating a display device, the method comprising:

• preparing a substrate comprising a first surface, a second surface opposite the first surface, and a first side surface disposed between the first surface and the second surface;
• disposing light emitting elements on the first surface;
• forming a side wiring on the first surface, the first side surface, and the second surface;
• printing a paste on the substrate and the side wiring by a silicon pad;
• and
• forming an overcoat layer by curing the paste,
• wherein in the forming of the overcoat layer, CaCO3 and SiO2 included in the paste cause a pozzolanic reaction together with H2O to generate xCaO·ySiO2·zH2O where x, y, and z are natural numbers.

A tiled display device comprising:

• a first display device and a second display device;
• and
• a seam disposed between the first display device and the second display device and connects the first display device to the second display device, wherein
• each of the first display device and the second display device comprises:
• a substrate comprising:
• a first surface;
• a second surface opposite the first surface;
• and
• a first side surface disposed between the first surface and the second surface;
• a light emitting element disposed on the first surface;
• a side wiring disposed on the first surface, the first side surface, and the second surface;
• and
• an overcoat layer covering the side wiring,
• wherein the overcoat layer comprises at least one of CaCO3 and xCaO·ySiO2·zH2O where x, y, and z are natural numbers.