Display device and tiled display device including the same

A display device comprising:

• a substrate;
• a thin film transistor layer disposed on the substrate;
• a light emitting element disposed on the thin film transistor layer;
• a display area including the light emitting element;
• a non-display area surrounding the display area and including a plurality of edge portions;
• an engraved pattern portion disposed at least one edge portion of the plurality of edge portions of the non-display area and recessed from an upper surface of the thin film transistor layer;
• and
• a trench portion disposed at the plurality of edge portions of the non-display area and surrounding the display area, the trench portion recessed toward the substrate.

A tiled display device comprising:

• a plurality of display devices that display an image;
• and
• a coupling area disposed between the plurality of display devices,
• wherein at least one of the plurality of display devices comprises:
• a substrate comprising:
• a first surface,
• a second surface opposite to the first surface,
• a first chamfer surface extending from a side of the first surface,
• a second chamfer surface extending from a side of the second surface, and
• a side surface connecting the first chamfer surface to the second chamfer surface;
• a display area including a plurality of light emitting elements disposed on the first surface of the substrate;
• a non-display area surrounding the display area on the first surface of the substrate;
• an engraved pattern portion disposed at a corner portion of the non-display area and recessed from an upper surface of the non-display area;
• and
• a trench portion disposed at a plurality of edge portions of the non-display area to surround the display area, the trench portion recessed toward the substrate.