Display apparatus including partition wall between color conversion layers
A display apparatus including a first pixel, a second pixel, and a third pixel includes: a first color conversion layer disposed on a substrate to correspond to an emission area of the first pixel and including first quantum dots; a second color conversion layer corresponding to an emission area of the second pixel and including second quantum dots; and a partition wall disposed between the first color conversion layer and the second color conversion layer and including partition wall-scattering particles and a first pigment.
1 . A display apparatus including a first pixel, a second pixel, and a third pixel which emit different colors, the display apparatus comprising: a first color conversion layer disposed on a substrate to correspond to an emission area of the first pixel and comprising first quantum dots; a second color conversion layer corresponding to an emission area of the second pixel and comprising second quantum dots; and a partition wall disposed between the first color conversion layer and the second color conversion layer and comprising partition wall-scattering particles and a first pigment, wherein the partition wall comprises a stack of: a first partition wall layer including the partition wall-scattering particles; and a second partition wall layer including the first pigment.
2 . The display apparatus of claim 1 , wherein a thickness of the second partition wall layer is less than a thickness of the first partition wall layer.
3 . The display apparatus of claim 1 , wherein each of the first pixel, the second pixel, and the third pixel comprises a light source which emits blue light, and
the second partition wall layer is disposed closer to the light source than the first partition wall layer is.
4 . The display apparatus of claim 3 , wherein the first pigment is yellow.
5 . The display apparatus of claim 1 , wherein a width of the first partition wall layer is less than or equal to a width of the second partition wall layer.
6 . The display apparatus of claim 1 , wherein an amount of the partition wall-scattering particles included in the partition wall is 5 weight percent (wt %) to 20 weight percent (wt %).
7 . The display apparatus of claim 1 , wherein the first pixel has a color of a longer wavelength than that of the second pixel, and an average size of the first quantum dots is greater than an average size of the second quantum dots.
8 . The display apparatus of claim 1 , further comprising a lower scattering particle layer disposed under the first color conversion layer and the second color conversion layer and comprising lower-scattering particles.
9 . The display apparatus of claim 1 , further comprising an upper scattering particle layer disposed over the first color conversion layer and the second color conversion layer and comprising upper-scattering particles.
10 . The display apparatus of claim 1 , wherein the partition wall is provided as a single layer, an amount of the partition wall-scattering particles included in the partition wall is 5 weight percent (wt %) to 20 weight percent (wt %), and an amount of the first pigment included in the partition wall is 0.4 weight percent (wt %) to 2 weight percent (wt %).
11 . The display apparatus of claim 1 , wherein the first color conversion layer comprises first scattering particles, and the second color conversion layer comprises second scattering particles.
12 . The display apparatus of claim 11 , wherein the first pixel has a color of a longer wavelength than that of the second pixel, and
an average size of the first scattering particles is greater than an average size of the second scattering particles.
13 . The display apparatus of claim 1 , further comprising a transmissive window arranged to correspond to the third pixel, wherein the transmissive window comprises third scattering particles.
14 . The display apparatus of claim 1 , further comprising a first color filter arranged to correspond to the first pixel, a second color filter arranged to correspond to the second pixel, and a third color filter arranged to correspond to the third pixel, wherein the first to third color filters have different colors from each other.
15 . A display apparatus comprising:
a first pixel, a second pixel, and a third pixel, each comprising an organic light-emitting diode which is disposed on a substrate and emits blue light;
a thin-film encapsulation layer covering the organic light-emitting diode;
an upper substrate disposed on the thin-film encapsulation layer and comprising a first color conversion layer corresponding to the first pixel, a second color conversion layer corresponding to the second pixel, and a transmissive window corresponding to the third pixel; and
a partition wall disposed on a lower surface of the upper substrate to correspond to a non-emission area between the first pixel, the second pixel, and the third pixel,
wherein the partition wall comprises partition wall-scattering particles and a first pigment, and
the partition wall comprises a stack of:
a first partition wall layer comprising the partition wall-scattering particles; and
a second partition wall layer comprising the first pigment.
16 . The display apparatus of claim 15 , wherein an amount of the partition wall-scattering particles included in the partition wall is 5 weight percent (wt %) to 20 weight percent (wt %).
17 . The display apparatus of claim 15 , wherein a diameter of the partition wall-scattering particles is about 200 nanometer (nm) to about 450 nanometer (nm).
18 . The display apparatus of claim 15 , wherein light transmittance of the first partition wall layer is greater than light transmittance of the second partition wall layer.
19 . The display apparatus of claim 18 , wherein the first pigment is yellow.
20 . The display apparatus of claim 15 , further comprising a first color filter corresponding to the first pixel, a second color filter corresponding to the second pixel, and a third color filter corresponding to the third pixel, wherein the first to third color filters have different colors from each other.
21 . The display apparatus of claim 20 , further comprising a light-blocking pattern disposed between the first color filter and the second color filter, wherein the light-blocking pattern has a color identical to that of the third color filter.
22 . The display apparatus of claim 15 , wherein an optical density of the partition wall is 0.01 per micrometer (/μm) to 0.2 per micrometer (/μm).