Referring to FIGS. 14 to 17, in the closed state, the first area A1 of the display 103 may be exposed to the outside of the electronic device 100 (e.g., the second structure 102), and the second area A2 may be received in the second structure 102. For example, in the closed state, the first structure 101 may be positioned adjacent to the roller 151, and the support sheet 153 may be rolled up around the roller 151. As much as the support sheet 153 is wound around the roller 151, the distance, e.g., the arrangement gap (e.g., the arrangement gap G of FIG. 22), between the surface of the display 103 and the inner surface of the edge of the second plate 121a may be reduced. According to an embodiment, as the arrangement gap G decreases, it is possible to suppress or prevent external foreign bodies from flowing into the inside of the second structure 102 through the arrangement gap G. According to an embodiment, the second area A2 or the multi joint hinge structure 113 inside the second structure 102 may be generally received in a space between the second plate 121a (e.g., rear case) and the support member 121d. As described above, the space in which the second area A2 or the multi joint hinge structure 113 is received may be separated by the support member 121d from the space (e.g., the space between the third plate 121c and the support member 121d) in which the printed circuit board is received.
