A display device according to an exemplary embodiment includes: a first substrate; first data pads that are disposed in a first row extending along a first direction on the first substrate, second data pads that are disposed in a second row extending along the first direction on the first substrate, gate pads that are disposed in the first row and are not disposed in the second row on the first substrate, data lines that are connected with the first data pads and the second data pads on the first substrate, and control signal lines that are connected the gate pads, wherein the control signal lines extend in a side area of the second data pads from the gate pads.