Display device and manufacturing method thereof

A display device comprising:

• a substrate including a display area having a through-hole and a non-display area adjacent to the display area;
• an inorganic insulating layer on the substrate;
• a light emitting stack on the inorganic insulating layer;
• a common electrode extending from the display area to the non-display area and disposed on the light emitting stack;
• an electrode patterning material layer contacting one end of the common electrode, and disposed on the light emitting stack;
• at least one groove formed in the light emitting stack and encircling the through-hole;
• and
• an inorganic encapsulating layer on the common electrode and in the at least one groove.

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

• forming a substrate including a display area and a non-display area;
• forming a sacrificial layer and a dam in the non-display area;
• forming a light emitting stack to cover the sacrificial layer and the dam;
• forming an electrode patterning material layer on the light emitting stack to be located in the non-display area;
• forming a second electrode on the light emitting stack to contact the electrode patterning material layer;
• forming a capping layer on the second electrode and the electrode patterning material layer;
• and
• forming a groove by irradiating laser light to the sacrificial layer.