IP Library › Granted Patent US 11,785,798
Granted Patent B2
US 11,785,798 · App. 17/243,003 · Granted Oct 10, 2023

Display with dam surrounding opening

Inventors: Hoi Soo Kwon (Pyeongtaek-si, KR); Sun Young Kim (Cheonan-si, KR); Seung Hwan Kim (Cheonan-si, KR); Hwi Seong Kim (Seongnam-si, KR); Yu Jin Ye (Asan-si, KR); Jae-Man Lee (Anyang-si, KR); Hee-Won Yoon (Asan-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K50/844H10K50/15H10K50/16H10K50/17H10K50/171H10K59/122H10K59/124H10K71/00H10K77/10H10K59/1201
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Quick Facts
Patent No.
US 11,785,798
App. No.
17/243,003
Granted
Oct 10, 2023
Kind
B2
Abstract

A display device includes: a substrate including an opening area, a peripheral area surrounding the opening area, and a display area surrounding the peripheral area; a transistor overlapping the display area on the substrate; an insulation layer on the transistor; a first electrode on the insulation layer; a pixel definition layer on the first electrode; an intermediate layer and a second electrode that overlap the first electrode and include a functional layer; a dam overlapping the peripheral area; and a first layer overlapping the peripheral area and spaced apart from the intermediate layer, wherein the first layer is spaced apart from an upper surface of the dam and covers a side surface of the dam.

Claims (47)

1. A display device comprising:

a substrate including an opening area, a peripheral area surrounding the opening area, and a display area surrounding the peripheral area;

a transistor overlapping the display area on the substrate;

an insulation layer on the transistor;

a first electrode on the insulation layer;

a pixel definition layer on the first electrode;

an intermediate layer and a second electrode that overlap the first electrode and include a functional layer;

a dam overlapping the peripheral area; and

a first layer overlapping the peripheral area and spaced apart from the intermediate layer,

wherein the first layer is free from overlapping at least a part of an upper surface of the dam and covers a side surface of the dam,

wherein the first layer is disposed on a same layer as the intermediate layer.

2. The display device of claim 1 , wherein an end of the first layer protrudes past an upper surface of the dam in a plan view.

3. The display device of claim 2 , further comprising an encapsulation layer on the second electrode,

wherein the encapsulation layer includes a first encapsulation inorganic layer, an encapsulation organic layer, and a second encapsulation inorganic layer, and an end of the second electrode overlaps the encapsulation organic layer.

4. The display device of claim 3 , wherein the first layer includes:

a first area exposing the upper surface of the dam; and

a second area exposing a portion of the insulation layer.

5. The display device of claim 4 , wherein the first encapsulation inorganic layer is in the first area on the upper surface of the dam.

6. The display device of claim 4 , wherein the first encapsulation inorganic layer contacts the insulation layer exposed in the second area, and has a stepped shape.

7. The display device of claim 4 , wherein the dam includes a plurality of dams having different heights.

8. The display device of claim 7 , wherein the first area overlaps at least one of the plurality of dams.

9. The display device of claim 8 , wherein

the display device further includes an inorganic insulation layer between the transistor and the substrate, and

the second area exposes the inorganic insulation layer.

10. The display device of claim 9 , wherein ends of the substrate, the inorganic insulation layer, the first encapsulation inorganic layer, and the second encapsulation inorganic layer define an inner surface of the opening area.

11. The display device of claim 1 , wherein the functional layer includes at least one of a hole injection layer, a hole transporting layer, an electron transporting layer, or an electron injection layer.

12. The display device of claim 11 , wherein the first layer includes a same material as at least one of the hole injection layer, the hole transporting layer, the electron transporting layer, or the electron injection layer.

13. A display device comprising:

a substrate including an opening area, a peripheral area surrounding the opening area, and a display area surrounding the peripheral area;

a transistor on the substrate;

an insulation layer on the transistor;

a first electrode on the insulation layer;

a pixel definition layer on the first electrode;

an intermediate layer and a second electrode that overlap the first electrode and include a functional layer;

a plurality of dams in the peripheral area; and

a first layer in the peripheral area,

wherein the first layer is free from overlapping at least a part of an upper surface of at least one of the plurality of dams,

wherein the first layer is disposed on a same layer as the intermediate layer.

14. The display device of claim 13 , wherein the first layer covers side surfaces of the plurality of dams.

15. The display device of claim 13 , further comprising an encapsulation layer on the second electrode,

wherein the encapsulation layer includes a first encapsulation inorganic layer, an encapsulation organic layer, and a second encapsulation inorganic layer, and

the first encapsulation inorganic layer contacts upper surfaces of the plurality of dams in the peripheral area.

16. The display device of claim 15 , wherein the first layer includes an end protruding from the upper surface of the dam.

17. The display device of claim 16 , wherein the first layer includes a first area exposing the upper surface of the dam in the peripheral area.

18. The display device of claim 17 , wherein the first encapsulation inorganic layer contacts the end of the first layer and the upper surface of the dam in the first area, and has a stepped shape.

19. The display device of claim 17 , wherein the first layer includes a second area exposing at least a portion of the insulation layer in the peripheral area.

20. The display device of claim 19 , wherein the first encapsulation inorganic layer contacts the insulation layer exposed in the second area, and has a stepped shape.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 28, 2021
From: KWON, HOI SOO; KIM, SUN YOUNG; KIM, SEUNG HWAN; KIM, HWI SEONG; YE, YU JIN; LEE, JAE-MAN; YOON, HEE-WON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056072/0407 →
Priority Claims (1)
KR 10-2020-0140520 · Oct 27, 2020 · national
Continuity (1)
Related Publication 20220131106A1 · Apr 28, 2022
Cited By (1)
US 12,232,355