An organic electroluminescent display device includes a substrate, pixels on the substrate and each including an organic emission layer, and a sealing member covering the pixels and configured to block moisture and gas from outside the organic electroluminescent display device to the pixels. The sealing member includes an inorganic layer of which a lower surface is opposite to an upper surface thereof and closer to the pixels than the upper surface, and each of the upper surface and the lower surface has an uneven shape.