A display device comprising: a substrate ; a first display area (DA1) in which a plurality of main sub-pixels (Pm) are on the substrate; and a second display area (DA2) 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 (TA), 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 (Pa1) comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels (Pa2) 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 (DA1) in which a plurality of main sub-pixels (Pm) are on the substrate; and a second display area (DA2) 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 (TA), 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 (Pa1) comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels (Pa2) 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 (Pa1) comprising an emission layer to emit a first color; a plurality of second auxiliary sub-pixels (Pa2) 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. <EOS>