Display device
A display device can include a substrate including first to fourth subpixels, a light emitting element disposed on the substrate, a plurality of light conversion layers disposed on the light emitting element, and a plurality of color filters disposed on the plurality of light conversion layers. The plurality of light conversion layers can include first and second light conversion layers configured to emit light having different colors. Further, in the first subpixel, the first light conversion layer can be disposed on the light emitting element and the second light conversion layer can be disposed on the first light conversion layer.
1 . A display device comprising:
a substrate including first to fourth subpixels;
a light emitting element disposed on the substrate;
a plurality of light conversion layers disposed on the light emitting element; and
a plurality of color filters disposed on the plurality of light conversion layers,
wherein the plurality of light conversion layers include first and second light conversion layers configured to emit light of different colors,
wherein in the first subpixel, the first light conversion layer is disposed on the light emitting element and the second light conversion layer is disposed on the first light conversion layer, and
wherein the first light conversion layer is also disposed on the second subpixel.
2 . The display device of claim 1 , wherein the light emitting element includes:
a first light emitting layer disposed on the substrate, and configured to emit blue light; and
a second light emitting layer disposed on the first light emitting layer, and configured to emit green light.
3 . The display device of claim 2 , further comprising a third light emitting layer,
wherein the third light emitting layer is disposed on the second light emitting layer and is configured to emit blue light.
4 . The display device of claim 1 , wherein the first light conversion layer absorbs blue light and converts the blue light into green light to emit the green light, and
the second light conversion layer absorbs green light and converts the green light into red light to emit the red light.
5 . The display device of claim 1 , wherein, in the second subpixel, the first light conversion layer is disposed on the light emitting element.
6 . The display device of claim 1 , wherein the plurality of light conversion layers further include a fourth light conversion layer configured to emit light of a color different from the color of light emitted from the first light conversion layer, and
in the second subpixel, the fourth light conversion layer is disposed on the light emitting element and the first light conversion layer is disposed on the fourth light conversion layer.
7 . The display device of claim 6 , wherein the fourth light conversion layer absorbs green light and converts the green light into red light to emit the red light.
8 . The display device of claim 7 , wherein the fourth light conversion layer absorbs a portion of the green light emitted from the light emitting element, converts an absorbed portion of the green light into red light to emit the red light, and transmits a remaining portion of the green light.
9 . The display device of claim 1 , wherein the plurality of light conversion layers further include a third light conversion layer disposed in the fourth subpixel, and
the third light conversion layer absorbs green light and converts the green light into red light to emit the red light.
10 . The display device of claim 9 , wherein the third light conversion layer absorbs a portion of the green light emitted from the light emitting element to convert an absorbed portion of the green light into red light, and transmits a remaining portion of the green light.
11 . The display device of claim 1 , wherein the plurality of color filters include first to third color filters,
the first color filter is disposed in the first subpixel to transmit red light,
the second color filter is disposed in the second subpixel to transmit green light, and
the third color filter is disposed in the third subpixel to transmit blue light.
12 . The display device of claim 11 , wherein the first subpixel emits the red light,
the second subpixel emits the green light,
the third subpixel emits the blue light, and
the fourth subpixel emits white light.
13 . The display device of claim 1 , further comprising:
an absorption film disposed on an entire surface of the first to fourth subpixels.