Display devices and methods of manufacturing display devices
View Patent ↗A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
1. A display device comprising:
a switching structure on a substrate, the switching structure including a switching device and a first optical distance controlling layer covering the switching device;
a first electrode on the switching structure;
a light emitting structure on the first electrode;
a second electrode on the light emitting structure; and
a first optical resonance layer including metal between the substrate and the switching structure, wherein
the second electrode and the first optical resonance layer cause an optical resonance of a light generated from the light emitting structure by providing a first optical resonance distance corresponding to a distance between an upper face of the first optical resonance layer and a bottom face of the second electrode.
2. The display device as claimed in claim 1 , wherein the first optical distance is determined to simultaneously generate optical resonances of red light, green light, and blue light generated from the light emitting structure.
3. The display device as claimed in claim 1 , wherein the first optical resonance distance is adjusted by controlling at least one of a thickness of the first optical distance controlling layer and a refraction index of the first optical distance controlling layer.
4. The display device as claimed in claim 1 , further comprising a buffer layer disposed between the substrate and the first optical resonance layer.
5. The display device as claimed in claim 1 , wherein the first optical resonance layer is semi-transparent.
6. The display device as claimed in claim 5 , wherein the first electrode is transparent and the second electrode is reflective or semi-transparent.
7. The display device as claimed in claim 5 , wherein the first electrode is semi-transparent and a second optical resonance distance for an optical resonance of the light is provided between the upper face of the first optical resonance layer and a bottom face of the first electrode.
8. The display device as claimed in claim 7 , wherein the second optical resonance distance is adjusted by controlling at least one of a thickness of the first optical distance controlling layer and a refraction index of the first optical distance controlling layer.
9. The display device as claimed in claim 7 , wherein a third optical resonance distance for an optical resonance of the light is provided between an upper face of the first electrode and the bottom face of the second electrode.
10. The display device as claimed in claim 9 , wherein the first, the second, and the third optical resonance distances are determined to respectively generate a first peak wavelength, a second peak wavelength, and a third peak wavelength corresponding to different colors of light having wavelengths within wavelength bands of red light, green light and blue light, respectively.
11. The display device as claimed in claim 10 , wherein each of the first, the second, and the third optical resonance distances is determined to simultaneously generate optical resonances of the red light, the green light and the blue light.
12. The display device as claimed in claim 1 , wherein the first optical resonance layer is reflective and the second electrode is semi-transparent.
13. The display device as claimed in claim 1 , further comprising:
a second optical distance controlling layer disposed on the second electrode; and
a second optical resonance layer disposed on the second optical resonance controlling layer.
14. The display device as claimed in claim 13 , wherein the second electrode is semi-transparent and a second optical resonance distance for an optical resonance of the light is provided between an upper face of the second electrode and a bottom face of the second optical resonance layer.
15. The display device as claimed in claim 14 , wherein the second optical resonance distance is adjusted by controlling at least one of a thickness of the second optical distance controlling layer and a refraction index of the second optical distance controlling layer.
16. The display device as claimed in claim 14 , wherein a third optical resonance distance for an optical resonance of the light is provided between the upper face of the first optical resonance layer and the bottom face of the second optical resonance layer.
17. The display device as claimed in claim 16 , wherein each of the first, the second, and the third optical resonance distances is determined to generate one peak wavelength within a wavelength band of visible light.
18. The display device as claimed in claim 1 , wherein
the optical resonance causes increase of luminance and/or intensity of light having a predetermined wavelength.