Display device
A display device includes first and second unit pixels adjacent to each other in a first direction. Each of the first and second unit pixels includes a first group disposed in a first row and a second group disposed in a second row spaced apart from the first row. The first group includes a first light emitting area emitting a first light, and a second light emitting area emitting a second light. The second group includes a light receiving area and third and fourth light emitting areas spaced apart from each other with the light receiving area interposed therebetween and emitting the third light. The fourth light emitting area of the first unit pixel and the third light emitting area of the second unit pixel are spaced apart from each other by a distance from about 25 micrometers to about 100 micrometers in the first direction.
1 . 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 comprising:
a first group disposed in a first row; and
a second group disposed in a second row spaced apart from the first row in a second direction perpendicular to the first direction,
wherein the first group comprises:
a first light-emitting area emitting a red light; and
a second light-emitting area spaced apart from the first light-emitting area by a first distance in the first direction and emitting a blue light, wherein the second group comprises:
a light-receiving area;
a third light-emitting area emitting a green light; and
a fourth light-emitting area emitting the green light and spaced apart from the third light-emitting area in the first direction such that the light-receiving area is disposed between the third light-emitting area and the fourth light-emitting area,
wherein the third light-emitting area and the fourth light-emitting area are each spaced apart from the light-receiving area by a second distance in the same second group,
wherein the fourth light-emitting area of the first unit pixel and the third light-emitting area of the second unit pixel are spaced apart from each other by a third distance equal to or greater than about 25 micrometers and equal to or smaller than about 100 micrometers in the first direction, and
wherein, in each of the first unit pixel and the second unit pixel, a number of the light-receiving areas is half of a sum of a number of the third light-emitting areas and a number of the fourth light-emitting areas.
2 . The display device of claim 1 , further comprising:
a base layer;
a display element layer disposed on the base layer; and
an input-sensing layer disposed on the display element layer, wherein
the display element layer comprises:
first, second, third, and fourth light-emitting elements that are disposed to correspond to the first, second, third, and fourth light-emitting areas; and
a light-receiving element disposed to correspond to the light-receiving area.
3 . The display device of claim 2 , wherein each of the first, second, third, and fourth light-emitting elements comprises a first light-emitting electrode, a hole transport region, a light-emitting layer, an electron transport region, and a second electrode, which are sequentially stacked on each other,
the light-receiving element comprises a light-receiving electrode, the hole transport region, a light-receiving layer, the electron transport region, and the second electrode, which are sequentially stacked on each other,
the first light-emitting element further comprises a first resonance auxiliary layer disposed between the light-emitting layer and the hole transport region,
the third light-emitting element further comprises a first sub-resonance auxiliary layer disposed between the light-emitting layer and the hole transport region,
the fourth light-emitting element further comprises a second sub-resonance auxiliary layer disposed between the light-emitting layer and the hole transport region, and
the light-receiving element further comprises a third sub-resonance auxiliary layer disposed between the light-receiving layer and the hole transport region.
4 . The display device of claim 3 , wherein the first sub-resonance auxiliary layer, the second sub-resonance auxiliary layer, and the third sub-resonance auxiliary layer are a single continuous layer.
5 . The display device of claim 1 , wherein each of the first and second distances is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.
6 . The display device of claim 1 , wherein the second light-emitting area and the light-receiving area overlap each other in the second direction, and
a separation distance in the second direction between the second light-emitting area and the light-receiving area is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.
7 . The display device of claim 1 , wherein each of the first unit pixel and the second unit pixel further comprises:
a fifth light-emitting area disposed between the first light-emitting area and the second light-emitting area to emit the blue light; and
a sixth light-emitting area disposed between the fifth light-emitting area and the second light-emitting area to emit the red light.
8 . The display device of claim 7 , wherein the first light-emitting area and the fifth light-emitting area are spaced apart from each other by a fifth distance in the first direction,
the fifth light-emitting area and the sixth light-emitting area are spaced apart from each other by a sixth distance in the first direction,
the sixth light-emitting area and the second light-emitting area are spaced apart from each other by a seventh distance in the first direction, and
each of the fifth, sixth, and seventh distances is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.
9 . The display device of claim 7 , wherein the fifth light-emitting area overlaps the third light-emitting area in the second direction,
the sixth light-emitting area overlaps the light-receiving area in the second direction, and
the second light-emitting area overlaps the fourth light-emitting area in the second direction.
10 . The display device of claim 9 , wherein each of a separation distance between the fifth light-emitting area and the third light-emitting area in the second direction, a separation distance between the sixth light-emitting area and the light-receiving area in the second direction, and a separation distance between the second light-emitting area and the fourth light-emitting area in the second direction is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.
11 . The display device of claim 1 , wherein each of the first, second, third, and fourth light-emitting areas and the light-receiving area have at least one of a lozenge shape, a square shape, and a rectangular shape when viewed in a plan view.
12 . The display device of claim 1 , wherein each of the first unit pixel and the second unit pixel comprises:
two light-emitting areas disposed in the second row; and
one light-receiving area disposed in the second row.
13 . The display device of claim 1 , further comprising a third unit pixel disposed adjacent to the first unit pixel in the second direction, wherein the third unit pixel comprises:
a second-second light-emitting area overlapping the first light-emitting area of the first unit pixel in the second direction and emitting the blue light;
a first-second light-emitting area spaced apart from the second-second light emitting area in the first direction, overlapping the second light-emitting area of the first unit pixel in the second direction, and emitting the red light;
a third-second light-emitting area overlapping the second-second light-emitting area in the second direction and emitting the green light;
a fourth-second light-emitting area spaced apart from the third-second light-emitting area in the first direction, overlapping the light-receiving area of the first unit pixel in the second direction, and emitting the green light; and
a second light-receiving area disposed between the third-second light-emitting area and the fourth-second light-emitting area.
14 . A display device comprising:
a first unit pixel;
a second unit pixel adjacent to the first unit pixel in a first direction;
a base layer;
a display element layer disposed on the base layer and comprising a pixel definition layer through which an opening is defined, first, second, third, and fourth light-emitting elements that are distinguished from each other by the pixel definition layer, and a light-receiving element; and
an input-sensing layer disposed on the display element layer, wherein each of the first, second, third, and fourth light-emitting elements and the light-receiving element comprise a first electrode, a hole transport region, an electron transport region, and a second electrode, which are sequentially stacked on each other,
the first light-emitting element further comprises a first resonance auxiliary layer disposed between the hole transport region and the electron transport region and a first layer disposed between the first resonance auxiliary layer and the electron transport region and emitting a first light,
the second light-emitting element further comprises a second light-emitting layer disposed between the hole transport region and the electron transport region and emitting a second light,
the third light-emitting element further comprises a first sub-resonance auxiliary layer disposed between the hole transport region and the electron transport region and a third light-emitting layer disposed between the first sub-resonance auxiliary layer and the electron transport region and emitting a third light,
the fourth light-emitting element further comprises a second sub-resonance auxiliary layer disposed between the hole transport region and the electron transport region and a fourth light-emitting layer disposed between the second sub-resonance auxiliary layer and the electron transport region and emitting the third light,
the light-receiving element further comprises a third sub-resonance auxiliary layer disposed between the hole transport region and the electron transport region and a light-receiving layer disposed between the first sub-resonance auxiliary layer and the electron transport region, and
the first sub-resonance auxiliary layer, the second sub-resonance auxiliary layer, and the third sub-resonance auxiliary layer are a single connected layer having no disconnected portions.
15 . The display device of claim 14 , wherein, when viewed in a plan view, each of the first unit pixel and the second unit pixel comprises:
a first group disposed in a first row; and
a second group disposed in a second row spaced apart from the first row in a second direction perpendicular to the first direction, the first group comprises:
a first light-emitting area corresponding to the first light-emitting element; and
a second light-emitting area spaced apart from the first light-emitting area by a first distance in the first direction and corresponding to the second light-emitting element, and the second group comprises:
a light-receiving area corresponding to the light-receiving element;
a third light-emitting area corresponding to the third light-emitting element; and
a fourth light-emitting area corresponding to the fourth light-emitting element and spaced apart from the third light-emitting area in the first direction such that the light-receiving area is disposed between the third light-emitting area and the fourth light-emitting area, and
wherein the third light-emitting area and the fourth light-emitting area are each spaced apart from the light-receiving area by a second distance in the same second group.
16 . The display device of claim 15 , wherein the fourth light-emitting area of the first unit pixel is spaced apart from the third light-emitting area of the second unit pixel by a third distance in the first direction, and
the third distance is greater than each of the first and second distances.
17 . The display device of claim 16 , wherein the third distance is equal to or greater than about 25 micrometers and equal to or smaller than about 100 micrometers.
18 . The display device of claim 15 , wherein a separation distance in the second direction between the second light-emitting area and the light-receiving area is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.
19 . The display device of claim 15 , wherein each of the first unit pixel and the second unit pixel further comprises:
a fifth light-emitting area disposed between the first light-emitting area and the second light-emitting area and emitting the second light; and
a sixth light-emitting area disposed between the fifth light-emitting area and the second light-emitting area and emitting the first light.
20 . The display device of claim 19 , wherein the first light-emitting area and the fifth light-emitting area are spaced apart from each other by a fifth distance in the first direction,
the fifth light-emitting area and the sixth light-emitting area are spaced apart from each other by a sixth distance in the first direction,
the sixth light-emitting area and the second light-emitting area are spaced apart from each other by a seventh distance in the first direction, and
each of the fifth, sixth, and seventh distances is equal to or greater than about 10 micrometers and equal to or smaller than about 40 micrometers.