An electronic device comprising: a housing including a window, configured to form a 1 st side of the electronic device, and a 2 nd side of the electronic device directed in an opposite direction of the 1 st side of the electronic device; a circuit board between the 1 st side and the 2 nd side of the electronic device, and comprising an input circuit configured to detect an input based on a change in a capacitance; a spacer between the window and the circuit board, and comprising a groove (320-M) formed on one side facing the window and a through-hole (320-H3) inside the groove (320-M); a conductive plate coupled to the groove (320-M) of the spacer, and disposed between the window and the through-hole (320-H3); and a flexible conductive contact (360-C) electrically connected to the input circuit by being mounted to one side of the circuit board facing the conductive plate, and inserted through the through-hole (320-H3) to electrically connect to the conductive plate, the conductive plate comprising: a plate portion formed of a non-conductive material and fit into the groove (320-M); a conductive layer disposed on the plate portion or inside the plate portion, and comprising a conductive pattern; and a contact portion disposed on a surface region of the plate portion exposed to the through-hole (320-H3), and electrically connected to the conductive layer, wherein the contact portion is electronically connected to the flexible conductive contact (360-C), and the conductive pattern forms the capacitance by a current provided from the circuit board. a housing including a window, configured to form a 1 st side of the electronic device, and a 2 nd side of the electronic device directed in an opposite direction of the 1 st side of the electronic device; a circuit board between the 1 st side and the 2 nd side of the electronic device, and comprising an input circuit configured to detect an input based on a change in a capacitance; a spacer between the window and the circuit board, and comprising a groove (320-M) formed on one side facing the window and a through-hole (320-H3) inside the groove (320-M); a conductive plate coupled to the groove (320-M) of the spacer, and disposed between the window and the through-hole (320-H3); and a flexible conductive contact (360-C) electrically connected to the input circuit by being mounted to one side of the circuit board facing the conductive plate, and inserted through the through-hole (320-H3) to electrically connect to the conductive plate, the conductive plate comprising: a plate portion formed of a non-conductive material and fit into the groove (320-M); a conductive layer disposed on the plate portion or inside the plate portion, and comprising a conductive pattern; and a contact portion disposed on a surface region of the plate portion exposed to the through-hole (320-H3), and electrically connected to the conductive layer, a plate portion formed of a non-conductive material and fit into the groove (320-M); a conductive layer disposed on the plate portion or inside the plate portion, and comprising a conductive pattern; and a contact portion disposed on a surface region of the plate portion exposed to the through-hole (320-H3), and electrically connected to the conductive layer, wherein the contact portion is electronically connected to the flexible conductive contact (360-C), and the conductive pattern forms the capacitance by a current provided from the circuit board.