Display device

Patent metadata

Field	Value
Publication number	US-11081532-B2
Application number	US-201916687562-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Dec 28, 2018
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

Provided is a display apparatus including a display module having a folding region and a plurality of non-folding regions adjacent to the folding region and including a display surface configured to display an image, and a support member below the display module and supporting the display module, wherein the display module is operated in a plurality of modes, and the plurality of modes includes a first mode in which the folding region has a first curvature radius and is folded in a first bending direction which surrounds a virtual first bending axis defined below the display module and a second mode in which the folding region has a second curvature radius and is folded in a second bending direction which surrounds a virtual second bending axis defined above the display module, wherein the first curvature radius is greater than the second curvature radius.

First claim

What is claimed is:

1. A display device comprising:
a display panel comprising a light emitting region and a non-light emitting region adjacent to the light emitting region;
a color conversion layer on the display panel;
a light blocking layer on the display panel, and a main opening portion corresponding to the light emitting region and a sub-opening portion corresponding to the non-light emitting region, the main opening portion and the sub-opening portion being defined at the light blocking layer; and
a color filter layer on the color conversion layer, wherein:
the color filter layer comprises:
a main filter portion corresponding to the main opening portion;
a sub-filter portion corresponding to the sub-opening portion; and
a light blocking filter portion corresponding to the non-light emitting region and not overlapping the sub-opening portion.

2. The display device of claim 1 , wherein the display panel comprises an organic electroluminescent device configured to emit a first color light.

3. The display device of claim 2 , wherein the color conversion layer comprises:
a first color conversion part comprising a first quantum dot configured to convert the first color light into a second color light;
a second color conversion part comprising a second quantum dot configured to convert the first color light into a third color light; and
a third color conversion part configured to transmit the first color light.

4. The display device of claim 3 , wherein the color filter layer comprises:
a first filter configured to transmit the second color light;
a second filter configured to transmit the third color light; and
a third filter configured to transmit the first color light, wherein each of the first filter, the second filter, and the third filter comprises:
the main filter portion and the light blocking filter portion, and
at least one selected from the first filter, the second filter, and the third filter further comprises the sub-filter portion.

5. The display device of claim 4 , wherein the first color light is blue light, the second color light is red light, and the third color light is green light, and
the first filter and the third filter comprise the sub-filter portion, but the second filter does not comprise the sub-filter portion.

6. The display device of claim 4 , wherein the third color conversion part and the third filter are provided integrally.

7. The display device of claim 3 , wherein the first color conversion part and the third color conversion part further comprise a scattering agent.

8. The display device of claim 3 , wherein the color filter layer comprises:
a third filter overlapping the third color conversion part and configured to transmit the first color light; and
a fourth filter overlapping the first color conversion part and the second color conversion part and configured to transmit a fourth color light.

9. The display device of claim 1 , wherein the light blocking layer is between the display panel and the color filter layer.

10. The display device of claim 1 , wherein the light blocking layer is on the color conversion layer, and the color filter layer covers the light blocking layer.

11. The display device of claim 1 , wherein the color filter layer is directly on the color conversion layer.

12. A display device comprising:
a light emitting region, a reflective region spaced apart from the light emitting region on a plane, and a light blocking region surrounding the light emitting region and the reflective region, comprising:
a display panel comprising an organic electroluminescent device;
a color conversion layer on the display panel and comprising a plurality of color conversion parts located to correspond to the light emitting region;
a color filter layer on the color conversion layer and comprising a plurality of filters; and
a light blocking layer on the display panel and comprising a light blocking part overlapping the light blocking region but not overlapping the light emitting region and the reflective region.

13. The display device of claim 12 , wherein the light emitting region comprises:
a red light emitting region, a green light emitting region, and a blue light emitting region, and
the reflective region comprises a red reflective region and a blue reflective region.

14. The display device of claim 12 , wherein the light emitting region comprises:
a plurality of red light emitting regions, a plurality of green light emitting regions, and a plurality of blue light emitting regions, wherein:
the red light emitting regions, the green light emitting regions, and the blue light emitting regions are alternately arranged in a first direction, and
each of the red light emitting regions, the green light emitting regions, and the blue light emitting regions is arranged in a second direction crossing the first direction.

15. The display device of claim 14 , wherein the reflective region comprises:
a red reflective region between the red light emitting regions arranged in the second direction; and
a blue reflective region between the blue light emitting regions arranged in the second direction.

16. The display device of claim 13 , wherein the organic electroluminescent device is configured to emit blue light, and the color conversion parts comprise:
a first color conversion part located to correspond to the red light emitting region and comprising a red quantum dot;
a second color conversion part located to correspond to the green light emitting region and comprising a green quantum dot; and
a third color conversion part located to correspond to the blue light emitting region.

17. The display device of claim 13 , wherein the filters comprise:
a red filter overlapping the red light emitting region and the red reflective region;
a green filter overlapping the green light emitting region; and
a blue filter overlapping the blue light emitting region and the blue reflective region.

18. The display device of claim 13 , wherein, on a plane, an area of the red light emitting region is greater than an area of the green light emitting region and an area of the blue light emitting region.

19. The display device of claim 12 , wherein a ratio of an area of the reflective region to a total area of the light emitting region, the reflective region, and the light blocking region is greater than 0% to 10% or less.

20. A display device comprising:
a display panel comprising an organic electroluminescent device;
a color conversion layer on the display panel and comprising a plurality of color conversion parts spaced apart from each other on a plane;
a light blocking layer on the organic electroluminescent device and having a main opening portion overlapping the color conversion parts and a sub-opening portion not overlapping the color conversion parts; and
a color filter layer on the color conversion layer and comprising a plurality of filters, wherein:
each of the filters comprises a main filter portion overlapping the main opening portion, and a light blocking filter portion adjacent to the main filter portion, and
at least one of the filters further comprises a sub-filter portion adjacent to the light blocking filter portion and spaced apart from the main filter portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Gak Seok
• Kim Byung-Chul
• Jang Chang-Soon
• Kim In Ok
• Song Inseok
• Oh Keunchan
• Jang Jieun

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/877

  comprising scattering means · CPC title

• G02F2201/52

  RGB geometrical arrangements · CPC title

• G02F1/133514

  Colour filters · CPC title

• H01L51/5284

  Electricity · mapped topic