A display device according to an embodiment of the present inventive concept includes: a substrate that includes a main display portion and first side portions connected with the main display portion; scan lines and data lines that are disposed on the substrate; pixels that are connected with the scan lines and the data lines; data voltage transmission lines that are respectively connected with the data lines; connection wires that are connected with the data voltage transmission lines; sub-connection wires that are connected with the connection wires; and a driver that is connected with the sub-connection wires, wherein the order of alignment of the data line connected with the connection wires and the order of alignment of the sub-connection wires connected with the connection wires are the same.