Provided is a display device including a display panel, and a window member on the display panel, wherein the window member includes a window base material including a flexible portion in which a first area having a first rigidity and a second area having second rigidity that is less than the first rigidity are alternately located, a buffer layer on the window base material and having a refractive index that is smaller than a refractive index of the window base material, and a filler layer on the buffer layer and having a refractive index that is smaller than the refractive index of the buffer layer.