Display device

Abstract

Disclosed is a display device. The display device includes: a first substrate including a plurality of unit light emitting areas; a first electrode and a second electrode located in each of the plurality of unit light emitting areas of the first substrate; a first insulating layer exposing one area of each of the first electrode and the second electrode; a light emitting element located on the first insulating layer and having a first end and a second end in a length direction; a light conversion pattern adjacent to the light emitting element, covering a portion of an upper surface of the light emitting element, and exposing the first end and the second end of the light emitting element; a first contact electrode located on the first electrode and connecting the one area of the exposed first electrode with the first end of the light emitting element; and a second contact electrode located on the second electrode.

Claims

1. A display device, the display device comprising: The first substrate comprises multiple unit light-emitting regions; The first electrode and the second electrode are located in each of the plurality of unit light-emitting regions of the first substrate; A first insulating layer exposes one region of each of the first electrode and the second electrode, and covers the remaining regions except for that one region; A light-emitting element is located on the first insulating layer and includes a first end and a second end in the length direction; A light conversion pattern is adjacent to the light-emitting element, covers a portion of the upper surface of the light-emitting element, exposes the first end and the second end of the light-emitting element, and does not overlap with the first end and the second end of the light-emitting element in the thickness direction of the first substrate; A first contact electrode is located on the first electrode and connects the exposed area of ​​the first electrode to the first end of the light-emitting element; as well as A second contact electrode is located on the second electrode and connects the exposed area of ​​the second electrode to the second end of the light-emitting element.

2. The display device according to claim 1, wherein: The plurality of unit light-emitting regions include a first light-emitting region, a second light-emitting region, and a third light-emitting region, and A first color light will be emitted from the first emitting region, a second color light will be emitted from the second emitting region, and a third color light will be emitted from the third emitting region.

3. The display device according to claim 2, wherein, The light conversion pattern includes a first light conversion pattern superimposed on the first light-emitting region in the thickness direction and including a first wavelength conversion particle, a second light conversion pattern superimposed on the second light-emitting region in the thickness direction and including a second wavelength conversion particle, and a first scattering pattern superimposed on the third light-emitting region in the thickness direction and including scattering particles.

4. The display device according to claim 3, wherein: The first light conversion pattern is configured to convert the first color light into the second color light and output the second color light. The second light conversion pattern is configured to convert the second color light into the third color light and output the third color light.

5. The display device according to claim 4, further comprising: An encapsulation layer is located on the first electrode, the second electrode, the light-emitting element, and the light conversion pattern.

6. The display device according to claim 5, further comprising: The second substrate is opposite to the first substrate. The second substrate includes a first color filter, a second color filter, and a third color filter. The first color filter is superimposed on the first light-emitting region in the thickness direction and configured to allow the second color light to pass through. The second color filter is superimposed on the second light-emitting region in the thickness direction and configured to allow the third color light to pass through. The third color filter is superimposed on the third light-emitting region in the thickness direction and configured to allow the first color light to pass through.

7. The display device according to claim 6, further comprising: The filler is positioned between the first substrate and the second substrate.

8. The display device according to claim 6, wherein, The second substrate includes a light-blocking pattern between adjacent color filters in the first, second, and third color filters.

9. The display device according to claim 3, wherein, The size of the first wavelength conversion particle is larger than the size of the second wavelength conversion particle.

10. The display device according to claim 3, further comprising: The first embankment pattern is located in each of the plurality of unit light-emitting regions of the first substrate and is spaced apart from each other. The first electrode and the second electrode are positioned on the first embankment pattern.

11. The display device according to claim 10, wherein, The light conversion pattern also includes a side light conversion pattern located on the opposing side surfaces of the first dam pattern, and the side light conversion pattern is positioned between the first electrode and the first contact electrode and between the second electrode and the second contact electrode.

12. The display device according to claim 1, wherein, The light conversion pattern is also positioned between the first insulating layer and the lower surface of the light-emitting element.

13. The display device according to claim 1, further comprising: A dummy electrode is located on the upper surface of the light conversion pattern and superimposed on the light-emitting element in the thickness direction, and is electrically and physically separated from the first contact electrode and the second contact electrode.

14. The display device according to claim 1, wherein, The light conversion pattern, positioned to overlap with the light-emitting element in the thickness direction, has a cross-section of an inverted trapezoidal shape in the length direction, wherein the upper width in the length direction is greater than the lower width in the length direction.

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