A light emitting display device, comprising: a substrate including a first pixel, a second pixel, a third pixel, and an infrared ray emission portion, the first pixel, the second pixel, and the third pixel to emit light of different colors; a first electrode on the substrate; a second electrode overlapping the first electrode; an emission layer between the first electrode and the second electrode; a pixel defining layer; a hole transport layer between the first electrode and the emission layer and extending over the pixel defining layer; an electron transport layer between the emission layer and the second electrode; an electron injection layer between the electron transport layer and the second electrode; and a resonance auxiliary layer between the first electrode and the emission layer, wherein the resonance auxiliary layer includes a first auxiliary layer on the first pixel and a second auxiliary layer in the infrared ray emission portion, and wherein the first auxiliary layer and the second auxiliary layer include a same material, wherein, in a cross-sectional view, the first auxiliary layer is confined to the first pixel, the second auxiliary layer is confined to the infrared ray emission portion and an infrared ray emission layer is confined to the infrared ray emission portion; and wherein the emission layer includes: a first emission layer in the first pixel; and a second emission layer in the infrared ray emission portion, wherein the first emission layer and the second emission layer include a same material, and wherein the first emission layer and the second emission layer are in a same layer, and the infrared ray emission layer is on the second emission layer. a substrate including a first pixel, a second pixel, a third pixel, and an infrared ray emission portion, the first pixel, the second pixel, and the third pixel to emit light of different colors; a first electrode on the substrate; a second electrode overlapping the first electrode; an emission layer between the first electrode and the second electrode; a pixel defining layer; a hole transport layer between the first electrode and the emission layer and extending over the pixel defining layer; an electron transport layer between the emission layer and the second electrode; an electron injection layer between the electron transport layer and the second electrode; and a resonance auxiliary layer between the first electrode and the emission layer, wherein the resonance auxiliary layer includes a first auxiliary layer on the first pixel and a second auxiliary layer in the infrared ray emission portion, and wherein the first auxiliary layer and the second auxiliary layer include a same material, wherein, in a cross-sectional view, the first auxiliary layer is confined to the first pixel, the second auxiliary layer is confined to the infrared ray emission portion and an infrared ray emission layer is confined to the infrared ray emission portion; and wherein the emission layer includes: a first emission layer in the first pixel; and a second emission layer in the infrared ray emission portion, wherein the first emission layer and the second emission layer include a same material, and wherein the first emission layer and the second emission layer are in a same layer, and the infrared ray emission layer is on the second emission layer. a first emission layer in the first pixel; and a second emission layer in the infrared ray emission portion, wherein the first emission layer and the second emission layer include a same material, and wherein the first emission layer and the second emission layer are in a same layer, and the infrared ray emission layer is on the second emission layer.