A display panel includes a substrate including an opening area, a display area, and a first non-display area, the first non-display area being between the opening area and the display area, a plurality of display elements arranged in the display area, a thin film encapsulation layer that covers the display elements, the thin film encapsulation layer including an inorganic encapsulation layer and an organic encapsulation layer, a groove in the first non-display area, a planarization layer in the first non-display area, the planarization layer covering the groove, a first inorganic insulating layer under the planarization layer such that the first inorganic insulating layer is between the planarization layer and the substrate, and a second inorganic insulating layer over the planarization layer.