A display device comprising: a first unit pixel; and a second unit pixel adjacent to the first unit pixel in a first direction, each of the first unit pixel and the second unit pixel include: a first group (PXAG1, PXAG 1-1) disposed in a first row; and a second group (PXAG2, PXAG2-1) disposed in a second row spaced apart from the first row in a second direction perpendicular to the first direction, the first group (PXAG1, PXAG1-1) comprising: a first light emitting area (PXA1, PXA1-1) emitting a first light; and a second light emitting area (PXA2, PXA2-1) spaced apart from the first light emitting area (PXA1, PXA1-1) by a first distance (L 1, L 1 - 1) in the first direction and emitting a second light, the second group (PXAG2, PXAG2-1) comprising: a light receiving area (FX, FX-1); a third light emitting area (PXA3, PXA3-1) emitting a third light; and a fourth light emitting area (PXA4, PXA4-1) emitting the third light and spaced apart from the third light emitting area (PXA3, PXA3-1) by a second distance (L 2, L 2 - 1) in the first direction such that the light receiving area (FX, FX-1) is disposed between the third light emitting area (PXA3, PXA3-1) and the fourth light emitting area (PXA4, PXA4-1), wherein the fourth light emitting area of the first unit pixel and the third light emitting area (PXA3-1) of the second unit pixel are spaced apart from each other by a distance (L 3) equal to or greater than about 25 micrometers and equal to or smaller than about 100 micrometers in the first direction. a first unit pixel; and a second unit pixel adjacent to the first unit pixel in a first direction, each of the first unit pixel and the second unit pixel include: a first group (PXAG1, PXAG 1-1) disposed in a first row; and a second group (PXAG2, PXAG2-1) disposed in a second row spaced apart from the first row in a second direction perpendicular to the first direction, the first group (PXAG1, PXAG1-1) comprising: a first light emitting area (PXA1, PXA1-1) emitting a first light; and a second light emitting area (PXA2, PXA2-1) spaced apart from the first light emitting area (PXA1, PXA1-1) by a first distance (L 1, L 1 - 1) in the first direction and emitting a second light, the second group (PXAG2, PXAG2-1) comprising: a light receiving area (FX, FX-1); a third light emitting area (PXA3, PXA3-1) emitting a third light; and a fourth light emitting area (PXA4, PXA4-1) emitting the third light and spaced apart from the third light emitting area (PXA3, PXA3-1) by a second distance (L 2, L 2 - 1) in the first direction such that the light receiving area (FX, FX-1) is disposed between the third light emitting area (PXA3, PXA3-1) and the fourth light emitting area (PXA4, PXA4-1), wherein a first group (PXAG1, PXAG 1-1) disposed in a first row; and a second group (PXAG2, PXAG2-1) disposed in a second row spaced apart from the first row in a second direction perpendicular to the first direction, the first group (PXAG1, PXAG1-1) comprising: a first light emitting area (PXA1, PXA1-1) emitting a first light; and a second light emitting area (PXA2, PXA2-1) spaced apart from the first light emitting area (PXA1, PXA1-1) by a first distance (L 1, L 1 - 1) in the first direction and emitting a second light, the second group (PXAG2, PXAG2-1) comprising: a light receiving area (FX, FX-1); a third light emitting area (PXA3, PXA3-1) emitting a third light; and a fourth light emitting area (PXA4, PXA4-1) emitting the third light and spaced apart from the third light emitting area (PXA3, PXA3-1) by a second distance (L 2, L 2 - 1) in the first direction such that the light receiving area (FX, FX-1) is disposed between the third light emitting area (PXA3, PXA3-1) and the fourth light emitting area (PXA4, PXA4-1), wherein a first light emitting area (PXA1, PXA1-1) emitting a first light; and a second light emitting area (PXA2, PXA2-1) spaced apart from the first light emitting area (PXA1, PXA1-1) by a first distance (L 1, L 1 - 1) in the first direction and emitting a second light, the second group (PXAG2, PXAG2-1) comprising: a light receiving area (FX, FX-1); a third light emitting area (PXA3, PXA3-1) emitting a third light; and a fourth light emitting area (PXA4, PXA4-1) emitting the third light and spaced apart from the third light emitting area (PXA3, PXA3-1) by a second distance (L 2, L 2 - 1) in the first direction such that the light receiving area (FX, FX-1) is disposed between the third light emitting area (PXA3, PXA3-1) and the fourth light emitting area (PXA4, PXA4-1), wherein a light receiving area (FX, FX-1); a third light emitting area (PXA3, PXA3-1) emitting a third light; and a fourth light emitting area (PXA4, PXA4-1) emitting the third light and spaced apart from the third light emitting area (PXA3, PXA3-1) by a second distance (L 2, L 2 - 1) in the first direction such that the light receiving area (FX, FX-1) is disposed between the third light emitting area (PXA3, PXA3-1) and the fourth light emitting area (PXA4, PXA4-1), wherein the fourth light emitting area of the first unit pixel and the third light emitting area (PXA3-1) of the second unit pixel are spaced apart from each other by a distance (L 3) equal to or greater than about 25 micrometers and equal to or smaller than about 100 micrometers in the first direction.