A display apparatus includes a substrate having a display area and a peripheral area outside the display area, a dam in the peripheral area, a first inorganic layer located in both the display area and the peripheral area and covering the dam, an upper surface of the first inorganic layer being nonplanar, and a roughness of the upper surface at a first part of the first inorganic layer outside the dam being greater than a roughness of the upper surface near a center of the display area, an organic layer covering the first inorganic layer in the display area and a portion of the peripheral area, and a second inorganic layer located in both the display area and the peripheral area and covering the dam and the organic layer.