An electronic device is provided that includes wireless communication circuity, a housing including a first housing part and a second housing part movably coupled to the first housing part, and a flexible display including an active area configured to display visual information and a non-active area positioned within the housing independently of movement of the second housing part, wherein the flexible display includes a plurality of layers, wherein at least one layer of the plurality of layers includes a conductive sheet, wherein the conductive sheet includes a first part positioned within the active area and a second part positioned within the non-active area, wherein the second part includes at least one feed point electrically connected to the wireless communication circuity and at least one ground point electrically connected to a ground of the electronic device, and wherein the wireless communication circuity is configured to communicate with an external electronic device using at least a part of the second part.