An electronic device disclosed herein includes a cover glass, a display panel exposed through the cover glass, a flexible substrate extending from a periphery of the display panel and bent and positioned on a rear surface of the display panel, a display driver integrated circuit (DDI) disposed on the flexible substrate, a sensing circuit disposed on the flexible substrate and electrically connected with the display driver integrated circuit, signal lines that transmit a signal to sub-pixels arranged on the display panel, and a sensing line passing through a peripheral portion of the display panel and the flexible substrate and electrically connected with at least some of the signal lines through the sensing circuit.