Display device and electronic device including the same

Patent metadata

Field	Value
Publication number	US-2025359418-A1
Application number	US-202519009174-A
Country	US
Kind code	A1
Filing date	Jan 3, 2025
Priority date	May 16, 2024
Publication date	Nov 20, 2025
Grant date	—

Abstract

A display device includes: a substrate including a first narrow pixel and a first wide pixel; a first electrode on the substrate; a light emitting layer on the first electrode; a second electrode on the light emitting layer; an encapsulation layer on the second electrode; and a capping layer between the second electrode and the encapsulation layer, where a thickness of the capping layer of the first narrow pixel is greater than a thickness of the capping layer of the first wide pixel.

First claim

What is claimed is:

1 . A display device comprising:
a substrate including a first narrow pixel and a first wide pixel; a first electrode on the substrate; a light emitting layer on the first electrode; a second electrode on the light emitting layer; an encapsulation layer on the second electrode; and a capping layer between the second electrode and the encapsulation layer, wherein a thickness of the capping layer of the first narrow pixel is greater than a thickness of the capping layer of the first wide pixel.

2 . The display device of claim 1 , wherein
each of the first narrow pixel and the first wide pixel emits light of a first color.

3 . The display device of claim 1 , wherein
the first wide pixel emits light in a normal mode, and the first narrow pixel emits light in a private mode.

4 . The display device of claim 1 , wherein
a thickness of the light emitting layer of the first narrow pixel is less than a thickness of the light emitting layer of the first wide pixel.

5 . The display device of claim 1 , wherein
the substrate further includes a second narrow pixel and a second wide pixel, and a thickness of the capping layer of the second narrow pixel is the same as a thickness of the capping layer of the second wide pixel.

6 . The display device of claim 5 , wherein
each of the second narrow pixel and the second wide pixel emits light of a second color.

7 . The display device of claim 5 , wherein
a thickness of the capping layer of the first narrow pixel is greater than a thickness of the capping layer of the second narrow pixel.

8 . The display device of claim 1 , wherein
the substrate further includes a third narrow pixel and a third wide pixel, and a thickness of the capping layer of the third narrow pixel is the same as a thickness of the capping layer of the third wide pixel.

9 . The display device of claim 8 , wherein
each of the third narrow pixel and the third wide pixel emits light of a third color.

10 . The display device of claim 8 , wherein
a thickness of the capping layer of the first narrow pixel is less than a thickness of the capping layer of the third narrow pixel.

11 . The display device of claim 1 , wherein
the substrate further includes a second narrow pixel and a second wide pixel, and a thickness of the capping layer of the second narrow pixel is greater than a thickness of the capping layer of the second wide pixel.

12 . The display device of claim 11 , wherein
a thickness of the capping layer of the first narrow pixel is the same as a thickness of the capping layer of the second narrow pixel.

13 . The display device of claim 11 , wherein
a thickness of the capping layer of the first narrow pixel is greater than a thickness of the capping layer of the second narrow pixel.

14 . The display device of claim 1 , further comprising
a first light blocking layer on the encapsulation layer.

15 . The display device of claim 14 , wherein
the first light blocking layer is provided with a first opening overlapping the first narrow pixel and a second opening overlapping the first wide pixel.

16 . The display device of claim 15 , wherein
a width of the first opening in a first direction is less than a width of the second opening in the first direction.

17 . The display device of claim 14 , further comprising
a second light blocking layer on the first light blocking layer.

18 . The display device of claim 17 , further comprising
a third light blocking layer on the second light blocking layer.

19 . The display device of claim 18 , wherein
the first to third light blocking layers overlap each other.

20 . The display device of claim 18 , further comprising
a polarizing layer on the second light blocking layer.

21 . An electronic device comprising:
a processor to provide input image data; and a display device to display an image based on the input image data, the display device including sub-pixel areas, wherein the display device comprises: a substrate including a first narrow pixel and a first wide pixel; a first electrode on the substrate; a light emitting layer on the first electrode; a second electrode on the light emitting layer; an encapsulation layer on the second electrode; and a capping layer between the second electrode and the encapsulation layer, wherein a thickness of the capping layer of the first narrow pixel is greater than a thickness of the capping layer of the first wide pixel.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoo Gi Na
• Kim Hyo Min
• Kim Ji Young
• Park Eun Ji

Classifications

• H10K59/8052

  Cathodes · CPC title

• H10K59/8051

  Anodes · CPC title

• H10K59/8792

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

• H10K59/873

  Encapsulations · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title