Display device and electronic apparatus including the same

Patent metadata

Field	Value
Publication number	US-11545653-B2
Application number	US-202117147955-A
Country	US
Kind code	B2
Filing date	Jan 13, 2021
Priority date	May 27, 2020
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A display device may include a pixel area and a transmission area adjacent to the pixel area, a circuit element disposed in the pixel area and including a transistor and a capacitor, a pixel electrode layer disposed in the pixel area and electrically connected to the circuit element, an emission layer disposed on the pixel electrode layer, an opposite electrode layer disposed on the emission layer, and a surface energy control layer disposed between the emission layer and the opposite electrode layer and including a perfluorinated material. The surface energy control layer may have a portion extending into the transmission area.

First claim

What is claimed is:

1. A display device comprising:
a pixel area and a transmission area adjacent to the pixel area;
a circuit element disposed in the pixel area and including a transistor and a capacitor;
a pixel electrode layer disposed in the pixel area and electrically connected to the circuit element;
an emission layer disposed on the pixel electrode layer;
an opposite electrode layer disposed on the emission layer; and
a surface energy control layer disposed between the emission layer and the opposite electrode layer and including a perfluorinated material, wherein
the surface energy control layer has a portion extending into the transmission area.

2. The display device of claim 1 , wherein the opposite electrode layer does not overlap the transmission area.

3. The display device of claim 1 , further comprising an aggregate particle disposed on the surface energy control layer and including a metal element.

4. The display device of claim 1 , wherein the opposite electrode layer includes silver (Ag), magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof.

5. The display device of claim 1 , further comprising an electron transport layer disposed between the surface energy control layer and the opposite electrode,
wherein the electron transport layer includes an opening corresponding to the transmission area.

6. The display device of claim 1 , further comprising an electron injection layer disposed between the surface energy control layer and the opposite electrode,
wherein the electron injection layer includes a metal.

7. The display device of claim 6 , wherein the electron injection layer does not overlap the transmission area.

8. The display device of claim 7 , wherein the metal of the electron injection layer includes an alkali metal, an alkaline earth metal, or a lanthanide metal.

9. The display device of claim 1 , wherein a thickness of the surface energy control layer is less than a thickness of the emission layer.

10. The display device of claim 1 , wherein a surface energy of the surface energy control layer is less than or equal to about 20 mJ/m 2 .

11. An electronic apparatus comprising a display device,
wherein the display device comprises:
a pixel area in which pixels are disposed and a transmission area adjacent to the pixel area;
a pixel electrode layer disposed in the pixel area;
an opposite electrode layer overlapping the pixel electrode layer in the pixel area and including a metal;
an emission layer disposed between the pixel electrode layer and the opposite electrode layer;
a surface energy control layer disposed between the emission layer and the opposite electrode layer, a portion of the surface energy control layer extending into the transmission area; and
a first sub-functional layer disposed between the surface energy control layer and the opposite electrode layer and including an organic material,
wherein the first sub-functional layer includes an opening corresponding to the transmission area.

12. The electronic apparatus of claim 11 , wherein a surface energy of the surface energy control layer is less than or equal to about 20 mJ/m 2 .

13. The electronic apparatus of claim 11 , wherein the surface energy control layer includes a perfluorinated material.

14. The electronic apparatus of claim 11 , wherein the opposite electrode layer includes silver (Ag), magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof.

15. The electronic apparatus of claim 11 , wherein the opposite electrode layer does not overlap the transmission area.

16. The electronic apparatus of claim 11 , further comprising an electron injection layer disposed between the surface energy control layer and the opposite electrode layer,
wherein the electron injection layer includes a metal.

17. The electronic apparatus of claim 16 , further comprising an aggregate particle disposed on the surface energy control layer,
wherein the aggregate particle includes a metal element.

18. The electronic apparatus of claim 17 , wherein the metal element of the aggregate particle includes a metal element included in the opposite electrode layer or a metal element included in the electron injection layer.

19. The electronic apparatus of claim 16 , wherein the metal of the electron injection layer includes an alkali metal, an alkaline earth metal, or a lanthanide metal.

20. The electronic apparatus of claim 11 , wherein a thickness of the surface energy control layer is less than a thickness of the emission layer.

21. The electronic apparatus of claim 11 , further comprising a component overlapping the transmission area.

22. The electronic apparatus of claim 21 , wherein the component includes a sensor or a camera.

23. The electronic apparatus of claim 11 , wherein the electronic apparatus includes a head-up display electronic apparatus, a mobile phone, or a display electronic apparatus for vehicles.

Assignees

• Samsung Display Co Ltd

Inventors

• Moon Chanho
• Kim Jaesik
• Kim Jaeik
• Lee Yeonhwa
• Lee Joongu

Classifications

• H01L2251/552

  Electricity · mapped topic

• H01L51/5225

  Electricity · mapped topic

• H01L51/5092

  Electricity · mapped topic

• H01L51/56 Primary

  Electricity · mapped topic

• H01L2227/323

  Electricity · mapped topic