Display panel
A display panel includes a light emitting element layer including a light emitting element that generates a first color light, a light control layer over the light emitting element layer, a color filter layer over the light control layer, and a low refractive index layer that is between the light control layer and the color filter layer and that has a thickness of about 0.2 μm to about 2.5 μm.
1 . A display panel comprising:
a light emitting element layer comprising a light emitting element configured to generate a first color light;
a light control layer over the light emitting element layer, the light control layer comprising a quantum dot;
a color filter layer over the light control layer; and
a refractive index layer, having refractive index of at most about 1.4, between the light control layer and the color filter layer, the refractive index layer having a thickness of about 0.2 μm to about 2.5 μm.
2 . The display panel of claim 1 , wherein the refractive index layer has a thickness of about 0.4 μm to about 2.5 μm.
3 . The display panel of claim 1 , wherein the light control layer comprises a first light control pattern configured to convert the first color light into a second color light, a second light control pattern configured to convert the first color light into a third color light, and a third light control pattern configured to transmit the first color light, and
wherein the first light control pattern and the second light control pattern comprise the quantum dot.
4 . The display panel of claim 3 , wherein the color filter layer comprises a first color filter corresponding to the first light control pattern, a second color filter corresponding to the second light control pattern, and a third color filter corresponding to the third light control pattern, and
wherein the refractive index layer comprises a first refractive index pattern corresponding to the first color filter, a second refractive index pattern corresponding to the second color filter, and a third refractive index pattern corresponding to the third color filter.
5 . The display panel of claim 4 , wherein the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern have different thicknesses.
6 . The display panel of claim 5 , wherein the first color filter, the second color filter, and the third color filter have different thicknesses.
7 . The display panel of claim 6 , wherein thicknesses of the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern are inversely proportional to thicknesses of the first color filter, the second color filter, and the third color filter respectively.
8 . The display panel of claim 5 , wherein the first light control pattern is on a first pixel area, the second light control pattern is on a second pixel area, and the third light control pattern is on a third pixel area, and
wherein the first pixel area, the second pixel area, and the third pixel area have different areas in a plan view.
9 . The display panel of claim 8 , wherein thicknesses of the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern are inversely proportional to areas of the first pixel area, the second pixel area, and the third pixel area respectively.
10 . The display panel of claim 3 , wherein the refractive index layer comprises a first refractive index pattern corresponding to the first light control pattern, a second refractive index pattern corresponding to the second light control pattern, and a third refractive index pattern corresponding to the third light control pattern, and
wherein the third refractive index pattern has a smaller thickness than each of the first refractive index pattern and the second refractive index pattern.
11 . The display panel of claim 1 , further comprising:
a capping layer between the light control layer and the refractive index layer and configured to provide a planar surface to the light control layer.
12 . A display panel comprising:
a light emitting element layer comprising a light emitting element configured to emit a first color light;
a light control layer over the light emitting element layer;
a color filter layer over the light control layer, the color filter layer comprising a first color filter, a second color filter, and a third color filter having different thicknesses; and
a refractive index layer, having a refractive index of at most about 1.4, between the light control layer and the color filter layer in a thickness direction, the refractive index layer comprising a first refractive index pattern corresponding to the first color filter, a second refractive index pattern corresponding to the second color filter, and a third refractive index pattern corresponding to the third color filter,
wherein the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern have different thicknesses.
13 . The display panel of claim 12 , wherein the light control layer comprises a first light control pattern, a second light control pattern, and a third light control pattern, and
wherein the first light control pattern corresponds to the first refractive index pattern, the second light control pattern corresponds to the second refractive index pattern, and the third light control pattern corresponds to the third refractive index pattern.
14 . The display panel of claim 13 , wherein at least one light control pattern selected from among the first light control pattern, the second light control pattern, and the third light control pattern comprises a quantum dot, and remaining light control pattern(s) do not comprise any quantum dot.
15 . The display panel of claim 14 , wherein the at least one light control pattern comprising the quantum dot has a thickness of about 0.4 μm or more.
16 . The display panel of claim 14 , wherein each remaining light control pattern not comprising any quantum dot have a smaller thickness than the at least one light control pattern comprising the quantum dot.
17 . The display panel of claim 13 , wherein the first light control pattern is on a first pixel area, the second light control pattern is on a second pixel area, and the third light control pattern is on a third pixel area, and
wherein areas of the first pixel area, the second pixel area, and the third pixel area are inversely proportional to thicknesses of the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern corresponding to the first pixel area, the second pixel area, and the third pixel area respectively.
18 . The display panel of claim 12 , wherein thicknesses of the first color filter, the second color filter, and the third color filter are inversely proportional to thicknesses of the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern respectively.
19 . The display panel of claim 12 , further comprising:
a capping layer between the light control layer and the refractive index layer and configured to cover the refractive index layer and the capping layer comprising an inorganic material.
20 . A display panel comprising:
a light emitting element layer comprising a light emitting element configured to emit a first color light;
a light control layer over the light emitting element layer;
a color filter layer over the light control layer, the color filter layer comprising a first color filter, a second color filter, and a third color filter having different thicknesses; and
a refractive index layer, having a refractive index of at most about 1.4, between the light control layer and the color filter layer, the refractive index layer comprising a first refractive index pattern corresponding to the first color filter, a second refractive index pattern corresponding to the second color filter, and a third refractive index pattern corresponding to the third color filter,
wherein the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern have different thicknesses,
wherein the first refractive index pattern, the second refractive index pattern, and the third refractive index pattern of the refractive index layer each has a thickness of about 0.2 μm to about 2.5 μm.