An electronic device (100; 300) comprising: a first housing (110; 310); a second housing (120; 320); a hinge device (164; 364) disposed between the first housing and the second housing such that the second housing is foldable from one end of the first housing; a flexible display (130; 400) disposed on the first housing and the second housing; and a protection frame (340, 350, 550, 810) disposed to cover at least a portion of an edge of the flexible display and comprising at least one conductive member (820, 821, 822, 1010) attached to an inner surface (811b, 812b) thereof facing the flexible display, wherein the flexible display (130, 400) comprises: a display panel (131, 430) comprising a front surface portion facing in a first direction where the flexible display is visually exposed to an outside in an unfolded state in which the first housing and the second housing are arranged side by side in a straight line, a first extension extending from one end of the front surface portion and bent in a second direction opposite to the first direction to face a lateral direction perpendicular to the first direction, and a second extension extending from the first extension and attached to a rear surface (400b, 811b) of the front surface portion to be parallel to the front surface portion; a glass layer disposed in the first direction with respect to the display panel; a polymer layer disposed in the first direction with respect to the glass layer, wherein the polymer layer comprises a first portion disposed to overlap the glass layer, and a second portion disposed outside the first portion and disposed to overlap the protection frame (340, 350, 550, 810) and the first extension; an adhesive (P1, P2, P3, 832) disposed between the glass layer and the first portion of the polymer layer; and an adhesive member attached to a rear surface (400b, 811b) of the second portion of the polymer layer and having adhesive force only in the first direction opposite to the second direction. a first housing (110; 310); a second housing (120; 320); a hinge device (164; 364) disposed between the first housing and the second housing such that the second housing is foldable from one end of the first housing; a flexible display (130; 400) disposed on the first housing and the second housing; and a protection frame (340, 350, 550, 810) disposed to cover at least a portion of an edge of the flexible display and comprising at least one conductive member (820, 821, 822, 1010) attached to an inner surface (811b, 812b) thereof facing the flexible display, wherein the flexible display (130, 400) comprises: a display panel (131, 430) comprising a front surface portion facing in a first direction where the flexible display is visually exposed to an outside in an unfolded state in which the first housing and the second housing are arranged side by side in a straight line, a first extension extending from one end of the front surface portion and bent in a second direction opposite to the first direction to face a lateral direction perpendicular to the first direction, and a second extension extending from the first extension and attached to a rear surface (400b, 811b) of the front surface portion to be parallel to the front surface portion; a glass layer disposed in the first direction with respect to the display panel; a polymer layer disposed in the first direction with respect to the glass layer, wherein the polymer layer comprises a first portion disposed to overlap the glass layer, and a second portion disposed outside the first portion and disposed to overlap the protection frame (340, 350, 550, 810) and the first extension; an adhesive (P1, P2, P3, 832) disposed between the glass layer and the first portion of the polymer layer; and an adhesive member attached to a rear surface (400b, 811b) of the second portion of the polymer layer and having adhesive force only in the first direction opposite to the second direction. a display panel (131, 430) comprising a front surface portion facing in a first direction where the flexible display is visually exposed to an outside in an unfolded state in which the first housing and the second housing are arranged side by side in a straight line, a first extension extending from one end of the front surface portion and bent in a second direction opposite to the first direction to face a lateral direction perpendicular to the first direction, and a second extension extending from the first extension and attached to a rear surface (400b, 811b) of the front surface portion to be parallel to the front surface portion; a glass layer disposed in the first direction with respect to the display panel; a polymer layer disposed in the first direction with respect to the glass layer, wherein the polymer layer comprises a first portion disposed to overlap the glass layer, and a second portion disposed outside the first portion and disposed to overlap the protection frame (340, 350, 550, 810) and the first extension; an adhesive (P1, P2, P3, 832) disposed between the glass layer and the first portion of the polymer layer; and an adhesive member attached to a rear surface (400b, 811b) of the second portion of the polymer layer and having adhesive force only in the first direction opposite to the second direction.