The second protection layer 630 may be disposed between the second adhesive member 610 and the first light transmitting member 650. In example embodiments, the second protection layer 630 may fill the second opening 655 and may be in direct contact with a lower surface of the second cover member 670 and an upper surface of the second adhesive member 610, and may cover a lower surface of the first light transmitting member 650. In addition, the second protection layer 630 may have a relatively lower viscosity than the second adhesive member 610, and may be completely (or readily) contacted to the lower surface of the second cover member 670, side walls defining the second opening 655 (e.g., an inner surface of the first light transmitting member 650), and the lower surface of the first light transmitting member 650. In other words, bubbles may not be generated between the lower surface of the second cover member 670 and an upper surface of the second protection layer 630. For example, the second protection layer 630 may include a photopolymer resin. Accordingly, as the second protection layer 630 having a relatively low viscosity is interposed between the second cover member 670 and the second adhesive member 610 and between the first light transmitting member 650 and the second adhesive member 610, the display device 100 may prevent or substantially prevent an adhesion failure between the second cover member 670 and the first cover member 590. In addition, the second protection layer 630 may serve as an impact absorbing layer. Accordingly, as the display device 100 includes the second protection layer 630, the display device 100 may be manufactured as a display device having an improved impact resistance.