Display apparatus

A display apparatus comprising a display area and a peripheral area outside the display area, the display apparatus comprising:

• a substrate comprising a first base layer, a first barrier layer, a second base laver, and a second barrier layer that are sequentially stacked;
• a thin-film transistor and a display device, the thin-film transistor being located on the substrate in the display area, and the display device being electrically connected to the thin-film transistor;
• at least one through portion located in the display area and vertically penetrating through the substrate and a plurality of layers stacked on the substrate;
• and
• at least one groove surrounding the at least one through portion,
• wherein the thin-film transistor comprises a semiconductor layer, a gate electrode, a source electrode, and a drain electrode, the plurality of layers comprise a first inorganic insulating layer between the semiconductor layer and the gate electrode, a second inorganic insulating layer between the gate electrode and the source and drain electrodes, and an organic insulating layer on the thin-film transistor,
• end portions of the first inorganic insulating layer and the second inorganic insulating layer are covered by the organic insulating layer, the end portions of the first inorganic insulating layer and the second inorganic insulating layer facing the at least one through portion at an outer side of the at least one groove, and
• the second barrier layer comprises at least one tip protruding toward the at least one groove, and the at least one tip is not covered by the organic insulating layer.