IP Library › Granted Patent US 11,296,297
Granted Patent B2
US 11,296,297 · App. 16/878,761 · Granted Apr 5, 2022

Display device having an inorganic layer covering an end of a first electrode

Inventors: Gun Woo Ko (Seoul, KR); Chan Young Kim (Hwaseong-si, KR); Jung Tae Park (Incheon, KR); Yeong Ho Lee (Hwaseong-si, KR); Seong Min Cho (Seongnam-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L51/5203H01L27/3258H01L27/3262H01L27/3265H01L2251/303
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,296,297
App. No.
16/878,761
Granted
Apr 5, 2022
Kind
B2
Abstract

A display device includes: a first electrode; a second electrode overlapping the first electrode; a light emission layer disposed between the first electrode and the second electrode; a partition wall overlapping a portion of the first electrode; and an inorganic layer disposed between the partition wall and the first electrode, wherein the inorganic layer covers an end of the first electrode.

Claims (59)

1. A display device comprising:

a first electrode;

a second electrode overlapping the first electrode;

a light emission layer disposed between the first electrode and the second electrode;

a partition wall overlapping a portion of the first electrode; and

an inorganic layer disposed between the partition wall and the first electrode,

wherein the inorganic layer covers an end of the first electrode,

wherein an upper surface of the inorganic layer is higher than an upper surface of the light emission layer in a direction substantially perpendicular to an upper surface of the first electrode.

2. The display device of claim 1 , wherein

the light emission layer is surrounded by the first electrode, the inorganic layer, and the second electrode.

3. The display device of claim 1 , wherein

a side surface of the light emission layer contacts a side surface of the inorganic layer.

4. The display device of claim 1 , wherein

the light emission layer has a thickness of about 2000 angstroms to about 4000 angstroms.

5. The display device of claim 1 , wherein

the inorganic layer has a thickness of about 50 angstroms to about 5000 angstroms.

6. The display device of claim 1 , wherein

the inorganic layer includes at least one of a silicon oxide, a silicon oxynitride, or a silicon nitride.

7. The display device of claim 1 , wherein

the inorganic layer is in contact with the second electrode.

8. The display device of claim 1 , further comprising:

a transistor disposed on a substrate; and

an insulating layer disposed on the transistor,

wherein the second electrode is in contact with the insulating layer.

9. A display device comprising:

a transistor disposed on a substrate;

an insulating layer disposed on the transistor;

a first electrode disposed on the insulating layer and electrically connected to the transistor;

a second electrode overlapping the first electrode;

a light emission layer disposed between the first electrode and the second electrode; and

an inorganic layer disposed between the first electrode and the second electrode,

wherein the inorganic layer contacts the light emission layer and covers an end of the first electrode,

wherein the light emission layer is surrounded by the first electrode, the inorganic layer, and the second electrode.

10. The display device of claim 9 , wherein

the second electrode includes a first area overlapping the first electrode and a second area corresponding to a remaining portion, and

a distance from an upper surface of the substrate to an upper surface of the first area of the second electrode is greater than a distance from the upper surface of the substrate to an upper surface of the second area.

11. The display device of claim 9 , wherein

an end of the light emission layer contacts an end of the inorganic layer.

12. The display device of claim 9 , wherein

the light emission layer has a thickness of about 2000 angstroms to about 4000 angstroms.

13. The display device of claim 9 , wherein

the inorganic layer has a thickness of about 50 angstroms to about 5000 angstroms.

14. A display device comprising:

a first electrode;

a second electrode overlapping the first electrode;

a light emission layer disposed on the first electrode;

a partition wall overlapping a portion of the first electrode; and

an inorganic layer disposed between the partition wall and the first electrode,

wherein the inorganic layer includes an opening overlapping the partition wall.

15. The display device of claim 14 , wherein

the light emission layer is surrounded by the first electrode, the inorganic layer, and the second electrode.

16. The display device of claim 14 , wherein

the light emission layer has a thickness of about 2000 angstroms to about 4000 angstroms.

17. The display device of claim 14 , wherein

the inorganic layer has a thickness of about 50 angstroms to about 5000 angstroms.

18. The display device of claim 14 , wherein

the inorganic layer includes at least one of a silicon oxide, a silicon oxynitride, or a silicon nitride.

19. The display device of claim 14 , wherein

the inorganic layer contacts a portion of the second electrode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 20, 2020
From: KO, GUN WOO; KIM, CHAN YOUNG; PARK, JUNG TAE; LEE, YEONG HO; CHO, SEONG MIN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 052709/0972 →
Priority Claims (1)
KR 10-2019-0109444 · Sep 4, 2019 · national
Continuity (1)
Related Publication 20210066639A1 · Mar 4, 2021