IP Library Granted Patent US 11,908,848
Granted Patent B2
US 11,908,848 · App. 17/203,496 · Granted Feb 20, 2024

Display device including electrode patterns and method of fabricating the same

Inventors: Jong Chan Lee (Suwon-si, KR); Sang Jun Park (Daegu, KR); Jeong Hyun Lee (Asan-si, KR); Woong Hee Jeong (Seoul, KR); Kwang Taek Hong (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H01L25/167H01L25/0753H01L33/62H01L2933/0066
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Quick Facts
Patent No.
US 11,908,848
App. No.
17/203,496
Granted
Feb 20, 2024
Kind
B2
Abstract

A display device and a method of fabricating a display device are provided. The display device includes a substrate comprising a contact area and a line area, a first electrode that extends in a first direction on the substrate, a first electrode pattern that extends in the first direction and is spaced apart from the first electrode on the substrate, a second electrode that extends in the first direction and is between the first electrode and the first electrode pattern on the substrate, a second electrode pattern that extends in the first direction and is between the first electrode and the second electrode on the substrate, and a first light-emitting element between the first electrode and the second electrode pattern in the contact area.

Claims (37)

1. A display device comprising:

a substrate comprising a contact area and a line area;

a first electrode that extends in a first direction on the substrate;

a first electrode pattern that extends in the first direction and is spaced apart from the first electrode on the substrate;

a second electrode that extends in the first direction and is between the first electrode and the first electrode pattern on the substrate;

a second electrode pattern that extends in the first direction and is between the first electrode and the second electrode on the substrate;

a first light-emitting element between the first electrode and the second electrode pattern in the contact area;

a first contact electrode on the first electrode in the contact area and in contact with a first end of the first light-emitting element;

a second contact electrode comprising a first area and a second area, wherein the first area is on the second electrode pattern in the contact area and is in contact with a second end of the first light-emitting element, and wherein the second area extends from the first area and is in the line area; and

a first pattern on the second area in the line area,

wherein the first pattern comprises a same material as the first contact electrode.

2. The display device of claim 1 , wherein the first pattern is in physical contact with the second area.

3. The display device of claim 1 , further comprising a second light-emitting element between the second electrode and the first electrode pattern in the contact area.

4. The display device of claim 3 , further comprising a third contact electrode on the second electrode in the contact area and in contact with a first end of the second light-emitting element,

wherein the second contact electrode further comprises a third area that extends from the second area to be on the first electrode pattern in the contact area, and is in contact with a second end of the second light-emitting element.

5. The display device of claim 4 , wherein the third contact electrode comprises a same material as the first contact electrode.

6. The display device of claim 1 , further comprising an insulating layer on the second contact electrode,

wherein the insulating layer exposes at least a part of the second area in the line area, and covers the first area in the contact area.

7. The display device of claim 6 , wherein the first pattern is in physical contact with the second area exposed by the insulating layer.

8. The display device of claim 7 , wherein an upper surface of the second area is in direct contact with a lower surface of the first pattern.

9. The display device of claim 1 , further comprising an insulating layer on the second contact electrode,

wherein the insulating layer is between the second area and the first pattern in the line area, and comprises a plurality of contact holes that penetrate through the insulating layer to expose a part of the second area.

10. The display device of claim 9 , wherein the first pattern is in direct contact with the second area through the plurality of contact holes that penetrate through the insulating layer.

11. The display device of claim 1 , wherein a thickness of the first contact electrode, a thickness of the second contact electrode, and a thickness of the first pattern are each in a range of 150 Å to 1,000 Å.

12. A display device comprising:

a substrate;

an electrode layer on the substrate and comprising a first electrode, a first electrode pattern spaced apart from the first electrode, a second electrode between the first electrode and the first electrode pattern, and a second electrode pattern between the first electrode and the second electrode;

a plurality of light-emitting elements on the electrode layer and comprising a first light-emitting element and a second light-emitting element, wherein both ends of the first light-emitting element are on the first electrode and the second electrode pattern, respectively, and wherein both ends of the second light-emitting element are on the second electrode and the first electrode pattern, respectively;

a first contact electrode on the first electrode to overlap the first electrode and in contact with a first end of the first light-emitting element;

a second contact electrode on the second electrode to overlap the second electrode and in contact with a first end of the second light-emitting element;

a third contact electrode on the electrode layer and comprising a first area, a second area, and a third area, wherein the first area overlaps the second electrode pattern and is in contact with a second end of the first light-emitting element, the second area overlaps the first electrode pattern and is in contact with a second end of the second light-emitting element, and the third area couples the first area with the second area;

an insulating layer on the third contact electrode; and

a first pattern on the third area,

wherein the insulating layer covers the first area and the second area and exposes at least a part of the third area.

13. The display device of claim 12 , wherein the first pattern is in physical contact with the third area exposed by the insulating layer.

14. The display device of claim 13 , wherein the third contact electrode comprises crystalline indium tin oxide (ITO), and

wherein the first pattern comprises crystalline ITO and/or amorphous ITO.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 16, 2021
From: LEE, JONG CHAN; PARK, SANG JUN; LEE, JEONG HYUN; JEONG, WOONG HEE; HONG, KWANG TAEK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 055618/0019 →
Priority Claims (1)
KR 10-2020-0066903 · Jun 3, 2020 · national
Continuity (1)
Related Publication 20210384178A1 · Dec 9, 2021
Cited By (3)
US 12,672,414 US 12,677,509 US 12,740,477