A display apparatus includes: a substrate including: a display area including a plurality of thin film transistors, and a plurality of display elements electrically connected to the plurality of thin film transistors; a first non-display area outside the display area; and a second non-display area at least partially surrounded by the display area; a through portion passing through the substrate in a vertical direction in the second non-display area; a metal layer surrounding the through portion at the second non-display area; and a hydrophobic blocking layer on an inner side surface of the through portion. The hydrophobic blocking layer includes an oxide of a metal material of the metal layer.