Display device with substrate comprising an opening and adjacent grooves

A display device, comprising:

• a substrate that includes an opening and a display area adjacent to the opening, the substrate including a plurality of grooves formed between the opening and the display area;
• a display element layer on the substrate and that includes a plurality of display elements in the display area, the display element layer including at least one organic material layer, wherein the at least one organic material layer is disconnected by the plurality of grooves;
• a thin-film encapsulation layer disposed on the display element layer, the thin-film encapsulation layer including at least one inorganic encapsulation layer and at least one organic encapsulation layer;
• and
• a planarization layer that includes an organic insulating material, wherein the planarization layer is disposed between the opening and the display area.

A display device, comprising:

• a substrate that includes an opening and a display area in which a plurality of pixels are disposed, the opening being formed between the plurality of pixels;
• a display element layer that includes a plurality of display elements that respectively correspond to the plurality of pixels, the display element layer including at least one organic material layer;
• a thin-film encapsulation layer disposed on the display element layer;
• and
• a plurality of grooves formed in the substrate between the opening and the display area and that disconnect the at least one organic material layer.