A display device may include a first pixel area on which a first pixel is disposed, a second pixel area on which a second pixel is disposed, the second pixel area being disposed adjacent to the first pixel area along a first direction, a lower connection line connecting the first pixel and the second pixel, and crossing the first pixel area and the second pixel area, an inorganic insulating layer disposed on the lower connection line and having a groove between the first pixel area and the second pixel area, and an organic insulating layer filling the groove of the inorganic insulating layer.