A display device comprising: a substrate having an upper surface; a first light-emitting structure on a first emitting area of a substrate; a second light-emitting structure on a second emitting area adjacent to the first emitting area of the substrate, and a third light-emitting structure on a third emitting area adjacent to the second emitting area of the substrate, wherein the second emitting area is disposed between the first emitting area and the third emitting area; a fourth light-emitting structure on a fourth emitting area adjacent to the third emitting area of the substrate, wherein the third emitting area is disposed between the second emitting area and the fourth emitting area, wherein the first, second, third and fourth emitting areas are a different color from each other, and wherein each of the light emitting structures comprises a lower electrode, a light-emitting layer and an upper electrode, the lower electrode having a lower surface facing the upper surface of the substrate, the display further comprising: a first insulating layer between the substrate and the first light-emitting structure, the first insulating layer extending between the substrate and the second, third and fourth light-emitting structures, and a second insulating layer formed between the first insulating layer and only the second and fourth light-emitting structures, such that a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the second and fourth light-emitting structures is greater than a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first and third light-emitting structures and a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the third light emitting structure is substantially equal to the vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first light-emitting structure. a substrate having an upper surface; a first light-emitting structure on a first emitting area of a substrate; a second light-emitting structure on a second emitting area adjacent to the first emitting area of the substrate, and a third light-emitting structure on a third emitting area adjacent to the second emitting area of the substrate, wherein the second emitting area is disposed between the first emitting area and the third emitting area; a fourth light-emitting structure on a fourth emitting area adjacent to the third emitting area of the substrate, wherein the third emitting area is disposed between the second emitting area and the fourth emitting area, wherein the first, second, third and fourth emitting areas are a different color from each other, and wherein each of the light emitting structures comprises a lower electrode, a light-emitting layer and an upper electrode, the lower electrode having a lower surface facing the upper surface of the substrate, the display further comprising: a first insulating layer between the substrate and the first light-emitting structure, the first insulating layer extending between the substrate and the second, third and fourth light-emitting structures, and a second insulating layer formed between the first insulating layer and only the second and fourth light-emitting structures, such that a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the second and fourth light-emitting structures is greater than a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first and third light-emitting structures and a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the third light emitting structure is substantially equal to the vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first light-emitting structure. a first insulating layer between the substrate and the first light-emitting structure, the first insulating layer extending between the substrate and the second, third and fourth light-emitting structures, and a second insulating layer formed between the first insulating layer and only the second and fourth light-emitting structures, such that a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the second and fourth light-emitting structures is greater than a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first and third light-emitting structures and a vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the third light emitting structure is substantially equal to the vertical distance between the upper surface of the substrate and the lower surface of the lower electrode of the first light-emitting structure.