An electronic device includes a housing that comprises a first surface, a second surface, and a side surface, the housing having at least one through-hole formed on the side surface, a flexible polymer layer that comprises a first part that is parallel to the first surface, a second part extending from the first part along the side surface, and a third part extending from the second part and inserted between the first part and the second surface, the polymer layer having at least one opening that passes through the second part and the third part, a plurality of display elements disposed on the flexible polymer layer, a display driving circuit, and at least one conductive line coupled to the polymer layer, extends along the second part, and is arranged around the opening, the through-hole and the opening being at least partially aligned with each other.