A display device comprising: a display substrate including a plurality of subpixels, respectively provided in a plurality of subpixel 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 including a plurality of data routing lines respectively connected to the plurality of data lines, wherein the plurality of data routing lines has a first area adhered to the display substrate to electrically connect a portion of the data pad part, a second area adhered to a first side of the display substrate, and a third area adhered to a rear surface of the display substrate, characterized in that the display substrate comprises a first display area and a second display area surrounding the first display area, wherein a plurality of first unit pixels is provided in the first display area, each first unit pixel including a plurality of subpixels, each first unit pixel having a first size in a first axis direction parallel to a first lengthwise direction of the display device, the plurality of first unit pixels arranged along the first axis direction at a reference pixel pitch being a distance between center portions of two adjacent first unit pixels along the first axis direction, and a plurality of second unit pixels is provided in the second display area, each second unit pixel including a plurality of subpixels and having a second size in the first axis direction less than the first size of each of the plurality of first unit pixels, a distance along the first axis direction between a side of the display substrate and a center of each of the second unit pixels adjacent to the side of the display substrate being equal to or less than half of the reference pixel pitch, wherein the plurality of subpixels comprise: a passivation layer covering the display substrate; a light emitting device including a first portion and a second portion opposite to the first portion, the first portion being relatively farther away from the rear surface of the display substrate than the second portion, and the first portion including a first electrode and a second electrode; and a planarization layer on the passivation layer, and wherein the planarization layer covers the light emitting device, except for a first electrode contact hole and a second electrode contact hole associated with the first and second electrodes (E1, E2). a display substrate including a plurality of subpixels, respectively provided in a plurality of subpixel 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 including a plurality of data routing lines respectively connected to the plurality of data lines, wherein the plurality of data routing lines has a first area adhered to the display substrate to electrically connect a portion of the data pad part, a second area adhered to a first side of the display substrate, and a third area adhered to a rear surface of the display substrate, characterized in that the display substrate comprises a first display area and a second display area surrounding the first display area, wherein a plurality of first unit pixels is provided in the first display area, each first unit pixel including a plurality of subpixels, each first unit pixel having a first size in a first axis direction parallel to a first lengthwise direction of the display device, the plurality of first unit pixels arranged along the first axis direction at a reference pixel pitch being a distance between center portions of two adjacent first unit pixels along the first axis direction, and a plurality of second unit pixels is provided in the second display area, each second unit pixel including a plurality of subpixels and having a second size in the first axis direction less than the first size of each of the plurality of first unit pixels, a distance along the first axis direction between a side of the display substrate and a center of each of the second unit pixels adjacent to the side of the display substrate being equal to or less than half of the reference pixel pitch, wherein the plurality of subpixels comprise: a passivation layer covering the display substrate; a light emitting device including a first portion and a second portion opposite to the first portion, the first portion being relatively farther away from the rear surface of the display substrate than the second portion, and the first portion including a first electrode and a second electrode; and a planarization layer on the passivation layer, and wherein the planarization layer covers the light emitting device, except for a first electrode contact hole and a second electrode contact hole associated with the first and second electrodes (E1, E2). a passivation layer covering the display substrate; a light emitting device including a first portion and a second portion opposite to the first portion, the first portion being relatively farther away from the rear surface of the display substrate than the second portion, and the first portion including a first electrode and a second electrode; and a planarization layer on the passivation layer, and wherein the planarization layer covers the light emitting device, except for a first electrode contact hole and a second electrode contact hole associated with the first and second electrodes (E1, E2).