Display device and method of manufacturing the same
A display device and a method of manufacturing a display device are provided. The display device includes: a base substrate; a color conversion pattern disposed on the base substrate; and a low refractive layer disposed on the base substrate, stacked with the color conversion pattern, and having a lower refractive index than the color conversion pattern. The low refractive layer includes a first base resin and particle clusters dispersed in the first base resin, and the particle clusters include a plurality of particles and bridges that combine the particles.
1. A display device comprising:
a base substrate;
a color conversion pattern on the base substrate; and
a low refractive layer on the base substrate, stacked with the color conversion pattern, and having a lower refractive index than the color conversion pattern,
wherein
the low refractive layer comprises:
a first base resin, and
particle clusters dispersed in the first base resin and comprising a plurality of particles and bridges combining the particles.
2. The display device of claim 1 , wherein
the color conversion pattern and the low refractive layer are in contact with each other to form an optical interface,
a surface of the low refractive layer contacting the color conversion pattern is an uneven surface, and
the uneven surface of the low refractive layer is formed by the particle clusters.
3. The display device of claim 1 , wherein
the color conversion pattern comprises:
a second base resin, and
wavelength shifters dispersed in the second base resin,
wherein a refractive index of the second base resin is at least 0.3 higher than the refractive index of the low refractive layer.
4. The display device of claim 1 , wherein
pores are defined between the particles of the particle clusters, and
the refractive index of the low refractive layer is 1.1 to 1.4.
5. The display device of claim 1 , wherein
the particles are silica particles, and
the bridges comprise polysiloxane bonds.
6. The display device of claim 5 , wherein
the first base resin comprises a siloxane polymer,
a weight-average molecular weight of the siloxane polymer is about 100 to about 10,000 g/mol, and
the siloxane polymer has a fluorine-substituted side chain.
7. The display device of claim 5 , wherein
the silica particles are non-hollow silica particles, and
a size of the silica particles is about 10 nm to about 30 nm.
8. The display device of claim 1 , wherein
the low refractive layer comprises:
a first low refractive layer between the base substrate and the color conversion pattern, or
a second low refractive layer on the color conversion pattern.
9. The display device of claim 8 , further comprising:
a first wavelength band filter between the base substrate and the first low refractive layer,
wherein the first wavelength band filter is configured to selectively absorb blue-wavelength light.
10. The display device of claim 9 , wherein
the first wavelength band filter comprises an organic material, and
the first wavelength band filter is in contact with the first low refractive layer.
11. The display device of claim 10 , wherein a refractive index of the first wavelength band filter is at least 0.3 higher than a refractive index of the first low refractive layer.
12. The display device of claim 8 , further comprising:
a second wavelength band filter between the color conversion pattern and the second low refractive layer,
wherein
the second low refractive layer is configured to cover side surface of the color conversion pattern, and
the second wavelength band filter is configured to selectively reflect green-wavelength light or blue-wavelength light.
13. The display device of claim 12 , wherein
the second wavelength band filter is a Bragg reflector comprising one or more first inorganic layers and one or more second inorganic layers alternately stacked, and
the second wavelength band filter is in contact with the color conversion pattern and the second low refractive layer.
14. The display device of claim 13 , wherein
the first inorganic layers have a refractive index of 1.7 or higher,
the second inorganic layers have a refractive index of 1.5 or lower, and
a lowermost layer of the second wavelength band filter in contact with the color conversion pattern and an uppermost layer of the second wavelength band filter in contact with the second low refractive layer both comprise the first inorganic layers.
15. The display device of claim 8 , wherein
the display device further comprises:
a first pixel to display a first color and a second pixel to display a second color different from the first color, and
an organic layer on the second low refractive layer and comprising an organic material,
wherein the first low refractive layer, the second low refractive layer, and the organic layer are all across the first and second pixels.