An electronic device comprising: a first housing; a second housing; a hinge module configured to enable the first housing and the second housing to be folded with respect to each other; a display panel supported by the first housing and the second housing; a conductive plate positioned under the display panel, wherein the conductive plate comprises: a first flat portion disposed with respect to the first housing, a second flat portion disposed with respect to the second housing, and a flexible portion formed between the first flat portion and the second flat portion, the flexible portion including a plurality of openings spaced apart from each other so as to enable the flexible portion to bend when the first housing and the second housing are folded with respect to each other; a blocking member (481, 482) positioned under the flexible portion of the conductive plate such that the blocking member (481, 482) overlaps with the plurality of openings of the flexible portion of the conductive plate; a first reinforcing plate positioned at least partially under a first portion of the flexible portion; and a second reinforcing plate positioned at least partially under a second portion of the flexible portion, wherein the first reinforcing plate and the second reinforcing plate are disposed to have a gap (g) between the first reinforcing plate and the second reinforcing plate and wherein each of the first reinforcing plate and the second reinforcing plate is adhesively attached to a portion of the conductive plate except for at least a portion of the flexible portion of the conductive plate corresponding to the plurality of openings. a first housing; a second housing; a hinge module configured to enable the first housing and the second housing to be folded with respect to each other; a display panel supported by the first housing and the second housing; a conductive plate positioned under the display panel, wherein the conductive plate comprises: a first flat portion disposed with respect to the first housing, a second flat portion disposed with respect to the second housing, and a flexible portion formed between the first flat portion and the second flat portion, the flexible portion including a plurality of openings spaced apart from each other so as to enable the flexible portion to bend when the first housing and the second housing are folded with respect to each other; a first flat portion disposed with respect to the first housing, a second flat portion disposed with respect to the second housing, and a flexible portion formed between the first flat portion and the second flat portion, the flexible portion including a plurality of openings spaced apart from each other so as to enable the flexible portion to bend when the first housing and the second housing are folded with respect to each other; a blocking member (481, 482) positioned under the flexible portion of the conductive plate such that the blocking member (481, 482) overlaps with the plurality of openings of the flexible portion of the conductive plate; a first reinforcing plate positioned at least partially under a first portion of the flexible portion; and a second reinforcing plate positioned at least partially under a second portion of the flexible portion, wherein the first reinforcing plate and the second reinforcing plate are disposed to have a gap (g) between the first reinforcing plate and the second reinforcing plate and wherein each of the first reinforcing plate and the second reinforcing plate is adhesively attached to a portion of the conductive plate except for at least a portion of the flexible portion of the conductive plate corresponding to the plurality of openings.