An electronic device (200, 400) comprising: a first housing including a first space; a second housing including a second space; a hinge configured to couple the first housing and the second housing rotatably with respect to each other; a display panel including a first flexible printed circuit board, FPCB,, the display panel being supported by the first housing and the second housing; a window supported by the first housing, the hinge and the second housing, wherein the display panel is positioned under the window and disposed to be viewable through at least a part of the window;a polymer member positioned under at least a part of the display panel; a first conductive member positioned under the polymer member in the first space of the first housing; a second conductive member positioned under the polymer member in the second space of the second housing; a first printed circuit board, PCB, positioned under the first conductive member in the first space of the first housing, the first PCB including a ground electrically connected to the first FPCB; a second printed circuit board, PCB, positioned under the second conductive member in the second space of the second housing, a supporting member disposed between the second PCB and the second conductive member, the supporting member including at least one conductive portion electrically connected to the second PCB; and at least one second FPCB electrically connecting the first PCB to the second PCB, wherein the first FPCB is electrically connected to the first conductive member in the first space of the first housing through a first conductive adhesive member, the at least one conductive portion is electrically connected to the second conductive member in the second space of the second housing through a second conductive adhesive member, and the at least one conductive portion is electrically connected to the ground of the first PCB through the second PCB and the at least one second FPCB. a first housing including a first space; a second housing including a second space; a hinge configured to couple the first housing and the second housing rotatably with respect to each other; a display panel including a first flexible printed circuit board, FPCB,, the display panel being supported by the first housing and the second housing; a window supported by the first housing, the hinge and the second housing, wherein the display panel is positioned under the window and disposed to be viewable through at least a part of the window;a polymer member positioned under at least a part of the display panel; a first conductive member positioned under the polymer member in the first space of the first housing; a second conductive member positioned under the polymer member in the second space of the second housing; a first printed circuit board, PCB, positioned under the first conductive member in the first space of the first housing, the first PCB including a ground electrically connected to the first FPCB; a second printed circuit board, PCB, positioned under the second conductive member in the second space of the second housing, a supporting member disposed between the second PCB and the second conductive member, the supporting member including at least one conductive portion electrically connected to the second PCB; and at least one second FPCB electrically connecting the first PCB to the second PCB, wherein the first FPCB is electrically connected to the first conductive member in the first space of the first housing through a first conductive adhesive member, the at least one conductive portion is electrically connected to the second conductive member in the second space of the second housing through a second conductive adhesive member, and the at least one conductive portion is electrically connected to the ground of the first PCB through the second PCB and the at least one second FPCB.