A display apparatus includes a substrate including a sub-pixel area, a first thin-film transistor in the sub-pixel area, and including a first semiconductor layer, and a first gate electrode overlapping the first semiconductor layer with a gate-insulating layer therebetween, and a capacitor in the sub-pixel area, electrically connected to the first thin-film transistor, and including a first electrode including a same material as the first gate electrode, a second electrode overlapping the first electrode with a first inorganic insulating layer therebetween, a third electrode overlapping the second electrode with a second inorganic insulating layer therebetween, and a fourth electrode overlapping the third electrode with an insulating layer therebetween, the insulating layer being above the second inorganic insulating layer and including a first organic insulating layer defining an opening corresponding to the capacitor and filled with an inorganic insulating material.