IP Library › Granted Patent US 12,256,584
Granted Patent B2
US 12,256,584 · App. 17/546,738 · Granted Mar 18, 2025

Display device

Inventors: Hae Yun Choi (Yongin-si, KR); Sung Kook Park (Yongin-si, KR); Sung Eun Baek (Yongin-si, KR); Jin Woo Choi (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L27/156H01L33/38
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Quick Facts
Patent No.
US 12,256,584
App. No.
17/546,738
Granted
Mar 18, 2025
Kind
B2
Abstract

A display device includes a pixel, the pixel includes at least one light emitting element including a first end and a second end; a first electrode overlapping the at least one light emitting element and electrically connected to the first end of the at least one light emitting element; and a second electrode overlapping the at least one light emitting element and the first electrode and electrically connected to the second end of the at least one light emitting element, and the first electrode includes area electrodes divided according to a number and a position of area electrodes overlapping the at least one light emitting element.

Claims (71)

1. A display device comprising:

a pixel, wherein

the pixel includes:

at least one light emitting element including a first end and a second end;

a bonding electrode;

a first electrode overlapping the at least one light emitting element and electrically connected to the first end of the at least one light emitting element via the bonding electrode, the bonding electrode disposed between the first electrode and the first end of the at least one light emitting element; and

a second electrode overlapping the at least one light emitting element and the first electrode and electrically connected to the second end of the at least one light emitting element, and

the first electrode includes area electrodes divided according to a number and a position of area electrodes overlapping the at least one light emitting element.

2. The display device of claim 1 , wherein

the bonding electrode includes a metal selected from the group consisting of Copper, Gold, and Tin.

3. The display device of claim 2 , wherein the bonding electrode is made of a same material as the first electrode.

4. The display device of claim 3 , wherein

the pixel includes a first pixel area, a second pixel area, and a third pixel area; and

the first pixel area, the second pixel area, and the third pixel area are adjacent to each other in a vertical direction.

5. The display device of claim 4 , wherein

the first electrode includes a first area electrode, a second area electrode, and a third area electrode; and

a number of the at least one light emitting element overlapping the first area electrode is different from a number of the at least one light emitting element overlapping the second area electrode.

6. The display device of claim 5 , wherein the first area electrode, the second area electrode, and the third area electrode have different sizes.

7. The display device of claim 5 , wherein the first area electrode, the second area electrode, and the third area electrode have a same shape or different shapes.

8. The display device of claim 3 , wherein

the pixel includes a first pixel area, a second pixel area, a third pixel area, a fourth pixel area, a fifth pixel area, a sixth pixel area, a seventh pixel area, an eighth pixel area, a ninth pixel area, and a tenth pixel area; and

the first pixel area, the second pixel area, the third pixel area, the fourth pixel area, the fifth pixel area, the sixth pixel area, the seventh pixel area, the eighth pixel area, the ninth pixel area, and the tenth pixel area are disposed adjacent in a matrix.

9. The display device of claim 8 , wherein

the first electrode includes a first area electrode, a second area electrode, a third area electrode, a fourth area electrode, a fifth area electrode, a sixth area electrode, a seventh area electrode, an eighth area electrode, a ninth area electrode, and a tenth area electrode; and

the first area electrode, the second area electrode, the third area electrode, the fourth area electrode, the fifth area electrode, the sixth area electrode, the seventh area electrode, the eighth area electrode, the ninth area electrode, and the tenth area electrode are spaced apart from each other in a matrix.

10. The display device of claim 3 , wherein

the pixel includes a first pixel area and a second pixel area, and

the first pixel area and the second pixel area are adjacent to each other in a horizontal direction.

11. The display device of claim 10 , wherein

the first electrode includes a first area electrode and a second area electrode, and

a number of the at least one light emitting element overlapping the first area electrode is equal to a number of the at least one light emitting element overlapping the second area electrode.

12. The display device of claim 3 , wherein

the pixel includes a first pixel area and a second pixel area, and

the first pixel area and the second pixel area are adjacent to each other in a vertical direction.

13. The display device of claim 12 , wherein

the first electrode includes a first area electrode and a second area electrode, and

a number of the at least one light emitting element overlapping the first area electrode is different from a number of the at least one light emitting element overlapping the second area electrode.

14. A display device comprising:

a pixel, wherein

the pixel includes:

at least one light emitting element including a first end and a second end;

a bonding electrode;

a first electrode overlapping the at least one light emitting element and electrically connected to the first end of the at least one light emitting element via the bonding electrode, the bonding electrode disposed between the first electrode and the first end of the at least one light emitting element; and

a second electrode overlapping the at least one light emitting element and the first electrode and electrically connected to the second end of the at least one light emitting element, and

the first electrode includes area electrodes divided according to a number and a position of area electrodes overlapping the at least one light emitting element;

the pixel includes pixel areas, and the area electrodes correspond to the pixel areas; and

the at least one light emitting element is disposed in a zigzag pattern.

15. The display device of claim 14 , wherein

the bonding electrode includes a metal selected from the group consisting of Copper, Gold, and Tin.

16. The display device of claim 15 , wherein the bonding electrode is made of a same material as the first electrode.

17. The display device of claim 14 , wherein

the first electrode includes a first area electrode, a second area electrode, and a third area electrode, and

the first area electrode, the second area electrode, and the third area electrode have different sizes.

18. The display device of claim 14 , wherein

the bonding electrode is made of a same material as the first electrode.

19. The display device of claim 18 , wherein

a number of the at least one light emitting element overlapping the first area electrode is different from a number of the at least one light emitting element overlapping the second area electrode.

20. A display device comprising:

pixels, wherein

each of the pixels includes:

at least one light emitting element including a first end and a second end;

a bonding electrode; and

a first electrode overlapping the at least one light emitting element and electrically connected to the first end of the at least one light emitting element via the bonding electrode, the bonding electrode disposed between the first electrode and the first end of the at least one light emitting element via the bonding electrode, the bonding electrode disposed between the first electrode and the first end of the at least one light emitting element, and

the first electrode includes area electrodes divided according to a number and a position of area electrodes overlapping the at least one light emitting element; and

a distance between the area electrodes is smaller than a diameter of the at least one light emitting element.

21. The display device of claim 20 , wherein

the first electrode includes a first area electrode, a second area electrode, and a third area electrode, and

the first area electrode, the second area electrode, and the third area electrode have different sizes.

22. The display device of claim 20 , further comprising an insulating layer disposed between the area electrodes.

23. The display device of claim 22 , further comprising:

an auxiliary adhesive layer disposed on the first electrode and the insulating layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 9, 2021
From: CHOI, HAE YUN; PARK, SUNG KOOK; BAEK, SUNG EUN; CHOI, JIN WOO
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 058351/0332 →
Priority Claims (2)
KR 10-2021-0056895 · Apr 30, 2021 · national
KR 10-2021-0073060 · Jun 4, 2021 · national
Continuity (1)
Related Publication 20220352236A1 · Nov 3, 2022
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