Light-emitting display device

Abstract

The present invention provides a light-emitting display device that reduces unevenness caused by external light reflection and emits light of uniform intensity to each sub-pixel area. [Solution] The light-emitting display device according to multiple embodiments of the present disclosure may include a plurality of lower surface irregularities patterns on an insulating layer corresponding to a non-light-emitting region and a plurality of upper surface irregularities patterns on a black matrix. The light-emitting display device may further include a light-controlling irregularity pattern on the surface of the insulating layer corresponding to a color control pattern. Furthermore, the shape of the lower surface irregularities pattern and / or the upper surface irregularities pattern can be made different by sub-pixel regions.

Claims

1. A substrate in which light-emitting regions and non-light-emitting regions are defined, A light-emitting diode is positioned on the substrate so as to correspond to the light-emitting region, Corresponding to the non-emitting region, a bank layer located on the side surface of the light-emitting diode, The light-emitting diode and the insulating layer located above the bank layer, A color control pattern positioned to correspond to the light-emitting region on the upper part of the insulating layer, The insulating layer includes a black matrix located to correspond to the non-luminescent region on the upper part of the insulating layer, The insulating layer corresponding to the non-luminescent region includes a plurality of lower surface irregularities patterns. The aforementioned black matrix includes a plurality of upper uneven patterns on its surface. The plurality of lower uneven patterns and the plurality of upper uneven patterns each have an irregular shape, in this light-emitting display device.

2. The light-emitting display device according to claim 1, wherein the refractive index of the color control pattern is greater than the refractive index of the insulating layer.

3. The light-emitting display device according to claim 1, wherein the refractive index of the color control pattern is 0.07 to 0.2 greater than the refractive index of the insulating layer.

4. The light-emitting display device according to claim 1, wherein in the plurality of lower uneven patterns and the plurality of upper uneven patterns, the angle between the peak and the groove is 15 degrees or more and 60 degrees or less.

5. The light-emitting display device according to claim 4, wherein the peaks of the plurality of lower uneven patterns and the peaks of the plurality of upper uneven patterns are offset from each other.

6. The light-emitting device according to claim 4, wherein the grooves of the plurality of lower uneven patterns are arranged to correspond to the peaks of the plurality of upper uneven patterns, and the peaks of the plurality of lower uneven patterns are arranged to correspond to the grooves of the plurality of upper uneven patterns.

7. The light-emitting device according to claim 1, wherein the side surface of the bank layer is arranged to extend further into the light-emitting region than the side surface of the black matrix.

8. The light-emitting display device according to claim 1, wherein at least one of the plurality of lower uneven patterns and the plurality of upper uneven patterns extends to the peripheral region of the color control pattern.

9. The light-emitting device according to claim 1, further comprising a plurality of light-controlling uneven patterns located on the surface of the insulating layer corresponding to the light-emitting region.

10. The light-emitting display device according to claim 9, wherein the average pitch between a peak and an adjacent peak in the plurality of lower uneven patterns is smaller than the average pitch between a peak and an adjacent peak in the plurality of light-controlled uneven patterns.

11. The substrate includes a first sub-pixel region and a second sub-pixel region, The color control pattern includes a first color control pattern positioned to correspond to the light-emitting region of the first sub-pixel region, and a second color control pattern positioned to correspond to the light-emitting region of the second sub-pixel region. The light-emitting display device according to claim 1, wherein the black matrix includes a first black matrix positioned to correspond to the non-emitting region of the first subpixel region and a second black matrix positioned to correspond to the non-emitting region of the second subpixel region.

12. The plurality of lower uneven patterns include a plurality of first lower uneven patterns provided on the surface of the insulating layer corresponding to the non-emitting region of the first sub-pixel region, and a plurality of second lower uneven patterns located on the surface of the insulating layer corresponding to the non-emitting region of the second sub-pixel region. The light-emitting display device according to claim 11, wherein the plurality of upper uneven patterns include a plurality of first upper uneven patterns provided on the surface of the first black matrix and a plurality of second upper uneven patterns provided on the surface of the second black matrix.

13. Each of the plurality of first lower uneven patterns and the plurality of first upper uneven patterns extends to the peripheral region of the first color control pattern. The light-emitting display device according to claim 12, wherein the plurality of second lower uneven patterns and the plurality of second upper uneven patterns each extend to the peripheral region of the second color control pattern.

14. A plurality of first light-controlling uneven patterns are provided on the surface of the insulating layer corresponding to the light-emitting region of the first sub-pixel region, The light-emitting display device according to claim 13, further comprising a plurality of second light-controlling uneven patterns provided on the surface of the insulating layer corresponding to the light-emitting region of the second sub-pixel region.

15. The light-emitting display device according to claim 13, wherein the extension length of the first color control pattern into the peripheral region of the plurality of first lower uneven patterns and the plurality of first upper uneven patterns is longer than the extension length of the second color control pattern into the peripheral region of the plurality of second lower uneven patterns and the plurality of second upper uneven patterns.

16. The light-emitting display device according to claim 15, wherein the first sub-pixel region includes a green sub-pixel, and the second sub-pixel region includes a blue sub-pixel or a red sub-pixel.

17. The substrate further includes a third sub-pixel region, The color control pattern further includes a third color control pattern positioned to correspond to the light-emitting region of the third sub-pixel region, The light-emitting display device according to claim 11, wherein the black matrix further includes a third black matrix positioned to correspond to the non-emitting region of the third subpixel region.

18. The plurality of lower uneven patterns include a plurality of first lower uneven patterns provided on the surface of the insulating layer corresponding to the non-emitting region of the first sub-pixel region, a plurality of second lower uneven patterns provided on the surface of the insulating layer corresponding to the non-emitting region of the second sub-pixel region, and a plurality of third lower uneven patterns provided on the surface of the insulating layer in the non-emitting region of the third sub-pixel region. The light-emitting display device according to claim 17, wherein the plurality of upper uneven patterns include a plurality of first upper uneven patterns provided on the surface of the first black matrix, a plurality of second upper uneven patterns provided on the surface of the second black matrix, and a plurality of third upper uneven patterns provided on the surface of the third black matrix.

19. Each of the plurality of first lower uneven patterns and the plurality of first upper uneven patterns extends to the peripheral region of the first color control pattern. Each of the plurality of second lower uneven patterns and the plurality of second upper uneven patterns extends to the peripheral region of the second color control pattern. The light-emitting display device according to claim 18, wherein the plurality of third lower uneven patterns and the plurality of third upper uneven patterns each extend to the peripheral region of the third color control pattern.

20. A plurality of first light-controlling uneven patterns are provided on the surface of the insulating layer corresponding to the light-emitting region of the first sub-pixel region, A plurality of second light-controlling uneven patterns are provided on the surface of the insulating layer corresponding to the light-emitting region of the second sub-pixel region, The light-emitting device according to claim 19, further comprising a plurality of third light-controlling uneven patterns provided on the surface of the insulating layer corresponding to the light-emitting region of the third sub-pixel region.

21. The extension length of the first color control pattern into the peripheral region of the plurality of first lower uneven patterns and the plurality of first upper uneven patterns is The light-emitting display device according to claim 19, wherein the extension length of the plurality of second lower uneven patterns and the plurality of second upper uneven patterns to the peripheral region of the second color control pattern is longer than the extension length of the plurality of third lower uneven patterns and the plurality of third upper uneven patterns to the peripheral region of the third color control pattern.

22. The light-emitting display device according to claim 21, wherein the first sub-pixel region includes a green sub-pixel, the second sub-pixel region includes a red sub-pixel, and the third sub-pixel region includes a blue sub-pixel.

23. The light-emitting display device according to claim 22, wherein the voltage applied to the first subpixel region is greater than the voltage applied to the second subpixel region and the third subpixel region, respectively.

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