Display panel, and display device including the same

A display device comprising:

• a substrate having an opening;
• a thin film transistor on a display area of the substrate and comprising a semiconductor layer and a gate electrode, the display area at least partially surrounding the opening;
• a display element electrically connected to the thin film transistor;
• a first groove in a non-display area between the opening of the substrate and the display area and defined in a multi-layer, the first groove having a shape concaved into the multi-layer, wherein the multi-layer comprises a lower layer on the substrate and at least one layer on the lower layer, and the at least one layer and the lower layer comprise materials that have different etch selectivities;
• a partition wall in the non-display area, wherein the partition wall is between the first groove and the opening of the substrate;
• and
• an encapsulation layer covering the display element and comprising a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer,
• wherein the at least one layer has a tip that protrudes toward the first groove beyond a point at which a lateral surface of the lower layer facing the first groove and a bottom surface of the at least one layer meet, and
• wherein the first inorganic encapsulation layer extends to the non-display area and overlaps an upper surface, a lateral surface, the bottom surface of the at least one layer, and a portion of the lateral surface of the lower layer.