A display device includes a display panel, a functional unit, a first flexible substrate, a display driving component, and a second flexible substrate. The display panel includes a first substrate and a second substrate. The second substrate includes a portion overlapping the first substrate and a non-overlapping portion not overlapping the first substrate. The first flexible substrate is connected to the non-overlapping portion. The first flexible substrate includes an insulator base with flexibility and an insulating coating portion disposed between the display driving component and the second flexible substrate. The display driving component is mounted on the non-overlapping portion to process a signal from the first flexible substrate and to supply the processed signal to the display panel. The second flexible substrate is connected to the first substrate to transmit a signal for driving the functional unit. The second flexible substrate is disposed to overlap the non-overlapping portion.