A display device comprising: a substrate; a first display area in which a plurality of main sub-pixels (Pm) are on the substrate; and a second display area in which a basic unit is arranged, the basic unit comprising an auxiliary light-emitting area (Pg), in which a plurality of auxiliary sub-pixels (Pa) are on the substrate, and a transmission portion, wherein each of the plurality of auxiliary sub-pixels comprises a pixel electrode on the substrate, an intermediate layer on the pixel electrode, and an opposite electrode on the intermediate layer, wherein the intermediate layer comprises an emission layer, wherein the plurality of auxiliary sub-pixels comprise: a plurality of first auxiliary sub-pixels comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels comprising an emission layer to emit a second color, wherein emission layers of the intermediate layers of second auxiliary sub-pixels that emit light of the second color from among the plurality of auxiliary sub-pixels are connected to each other, characterised in that a distance between a first auxiliary sub-pixel and each of the second auxiliary sub-pixels is larger than a distance between second auxiliary sub-pixels adjacent to each other from among the plurality of second auxiliary sub-pixels. a substrate; a first display area in which a plurality of main sub-pixels (Pm) are on the substrate; and a second display area in which a basic unit is arranged, the basic unit comprising an auxiliary light-emitting area (Pg), in which a plurality of auxiliary sub-pixels (Pa) are on the substrate, and a transmission portion, wherein each of the plurality of auxiliary sub-pixels comprises a pixel electrode on the substrate, an intermediate layer on the pixel electrode, and an opposite electrode on the intermediate layer, wherein the intermediate layer comprises an emission layer, wherein the plurality of auxiliary sub-pixels comprise: a plurality of first auxiliary sub-pixels comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels comprising an emission layer to emit a second color, wherein emission layers of the intermediate layers of second auxiliary sub-pixels that emit light of the second color from among the plurality of auxiliary sub-pixels are connected to each other, characterised in that a distance between a first auxiliary sub-pixel and each of the second auxiliary sub-pixels is larger than a distance between second auxiliary sub-pixels adjacent to each other from among the plurality of second auxiliary sub-pixels. a plurality of first auxiliary sub-pixels comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels comprising an emission layer to emit a second color, wherein emission layers of the intermediate layers of second auxiliary sub-pixels that emit light of the second color from among the plurality of auxiliary sub-pixels are connected to each other, characterised in that a distance between a first auxiliary sub-pixel and each of the second auxiliary sub-pixels is larger than a distance between second auxiliary sub-pixels adjacent to each other from among the plurality of second auxiliary sub-pixels.