Display device

Patent metadata

Field	Value
Publication number	US-12048217-B2
Application number	US-202117521154-A
Country	US
Kind code	B2
Filing date	Nov 8, 2021
Priority date	Dec 14, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A display device may include a substrate including a plurality of first areas and a plurality of second areas adjacent to the first areas, a pixel defining layer, and a light blocking layer. The pixel defining layer is disposed on the substrate. The pixel defining layer defines a plurality of first openings positioned in each of the first areas and a plurality of second openings positioned in each of the second areas. The light blocking layer is disposed in each of the second areas on the substrate and surrounds the second openings in the plan view. An area of each of the second openings may be larger than an area of each of the first openings in the plan view.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a plurality of first areas and a plurality of second areas adjacent to the first areas;
a plurality of first light emitting structures disposed in each of the plurality of first areas on the substrate and defining a plurality of first light emitting pixels in a plan view, wherein each of the plurality of first light emitting structures includes a first lower electrode, a first upper electrode disposed on the first lower electrode, and a first light emitting layer disposed between the first lower electrode and the first upper electrode;
a plurality of second light emitting structures disposed in each of the plurality of second areas on the substrate and defining a plurality of second light emitting pixels in the plan view, wherein each of the plurality of second light emitting structures includes a second lower electrode, a second upper electrode disposed on the second lower electrode, and a second light emitting layer disposed between the second lower electrode and the second upper electrode; and
a light blocking layer disposed in each of the second areas on the substrate and surrounding the second light emitting pixels in the plan view,
wherein an area of a second light emitting pixel among the second light emitting pixels is larger than an area of a first light emitting pixel among the first light emitting pixels and which emits light of a same color as the second light emitting pixel in the plan view.

2. The display device of claim 1 , wherein the first areas and the second areas are alternately arranged in one direction.

3. The display device of claim 1 , wherein each of the first and second light emitting pixels includes:
a red light emitting pixel which emits red light;
a green light emitting pixel which emits green light; and
a blue light emitting pixel which emits blue light.

4. The display device of claim 1 , wherein the display device is driven in a sharing mode in which the first and second light emitting pixels simultaneously emit light, or in a private mode in which the second light emitting pixels emit light.

5. The display device of claim 1 , wherein the first light emitting pixels are repeatedly arranged in a row direction and a column direction, and the second light emitting pixels are repeatedly arranged in the row direction and the column direction.

6. The display device of claim 1 , wherein a shape of each of the first light emitting pixels and a shape of each of the second light emitting pixels are the same in the plan view.

7. The display device of claim 6 , wherein each of the first and second light emitting pixels has a rhombus shape in the plan view.

8. The display device of claim 1 , wherein a shape of each of the first light emitting pixels and a shape of each of the second light emitting pixels are different from each other in the plan view.

9. The display device of claim 8 , wherein each of the first light emitting pixels has a rhombus shape in the plan view, and
wherein each of the second light emitting pixels has a rectangular shape in the plan view.

10. The display device of claim 9 , wherein second blue light emitting pixels among the second light emitting pixels and which emit blue light are disposed in a first column of each of the second areas in the plan view, and
wherein second red light emitting pixels which emit red light and second green light emitting pixels which emit green light, among the second light emitting pixels, are alternately disposed in a second column of each of the second areas in the plan view.

11. The display device of claim 9 , wherein each of the second light emitting pixels has a same-sized rectangular shape, and
wherein the second light emitting pixels are sequentially arranged in one direction in the plan view.

12. The display device of claim 1 , further comprising:
an encapsulation layer disposed on the first and second upper electrodes; and
a protective member disposed on the encapsulation layer.

13. The display device of claim 12 , wherein the light blocking layer is disposed on the encapsulation layer in each of the second areas.

14. The display device of claim 12 , further comprising:
a light blocking member disposed on the protection member in each of the second areas.

15. The display device of claim 14 , wherein the light blocking member is divided into a blocking area which blocks light in a lateral direction and a transmission area which transmits light in a front direction.

16. A display device comprising:
a substrate including a plurality of first areas and a plurality of second areas adjacent to the first areas;
a pixel defining layer disposed on the substrate and defining a plurality of first openings positioned in each of the first areas and a plurality of second openings positioned in each of the second areas; and
a light blocking layer disposed in each of the second areas on the substrate and surrounding the second openings in a plan view,
an area of each of the second openings is larger than an area of each of the first openings in the plan view.

17. The display device of claim 16 , wherein the first areas and the second areas are alternately arranged in one direction.

18. The display device of claim 16 , wherein a first light emitting layer which emits light of one of red, green, and blue lights is disposed in each of the first openings, and
wherein a second light emitting layer which emits a same color as the first light emitting layer is disposed in each of the second openings.

19. The display device of claim 18 , wherein the display device is driven in a sharing mode in which the first light emitting layer and the second light emitting layer simultaneously emit light, or in a private mode in which the second light emitting layer emits light.

20. The display device of claim 16 , wherein the first openings are repeatedly arranged in a row direction and a column direction, and the second openings are repeatedly arranged in the row direction and the column direction.

Assignees

• Samsung Display Co Ltd

Inventors

• Hong Jongbeom
• Kim Reehyang
• Shim Yongsub
• Yoo Youngjun
• Yi Junghwan

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8792

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

• H10K59/873

  Encapsulations · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/352 Primary

  the areas of the RGB subpixels being different · CPC title