Display device and manufacturing method thereof

A display device, comprising:

• a substrate comprising a plastic layer, a barrier layer, and a display area in which an image is displayed;
• a transistor disposed in the display area and comprising a gate electrode, a source electrode, and a drain electrode;
• a pixel electrode connected to the transistor;
• an emission layer overlapping the pixel electrode;
• and
• an opening disposed in the display area and penetrating the substrate,
• wherein the opening comprises a protruded portion and a depressed portion,
• wherein the barrier layer disposed in the protruded portion overlaps a metal auxiliary layer disposed at a same layer as at least one of the gate electrode, the source electrode, and the pixel electrode.

A method of manufacturing a display device, comprising:

• forming a pixel electrode connected to a transistor, a planarization layer, and a pixel definition layer on a substrate,
• wherein the substrate comprises a plastic layer and a barrier layer, and the planarization layer and the pixel definition layer overlap the pixel electrode;
• and
• forming an opening penetrating the substrate and at least one of the pixel definition layer and the planarization layer,
• wherein an external circumferential surface of the opening comprises a protruded portion at which the barrier layer is protruded toward a center of the opening, and a depressed portion at which the plastic layer is recessed away from the center of the opening,
• wherein the barrier layer overlaps at least one of the pixel definition layer and the planarization layer at the protruded portion.