Disclosed is a display device and a multi-screen display device using the same, which include a minimized bezel area. The display device includes a display substrate including a plurality of subpixels, respectively provided in a plurality of pixel areas defined by a plurality of data lines and a plurality of gate lines, and a data pad part connected to each of the plurality of data lines in a one-to-one relationship and a data routing film adhered to the data pad part, the data routing film including a plurality of data routing lines respectively connected to the plurality of data lines. The data routing film is closely adhered to the display substrate to surround the data pad part, one side of the display substrate, and a rear surface of the display substrate overlapping the data pad part.