IP Library › Granted Patent US 11,811,010
Granted Patent B2
US 11,811,010 · App. 17/661,518 · Granted Nov 7, 2023

Display device and method of fabricating the same

Inventors: Chong Sup Chang (Hwaseong-si, KR); Hyun Ae Kim (Seoul, KR); Eui Kang Heo (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H01L33/62H01L25/0753H01L27/1214H01L29/78633H01L2933/0066
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Quick Facts
Patent No.
US 11,811,010
App. No.
17/661,518
Granted
Nov 7, 2023
Kind
B2
Abstract

A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other on the substrate, a first insulating pattern on the substrate to cover at least a portion of each of the first electrode and the second electrode, a light emitting element between the first electrode and the second electrode on the first insulating pattern, a first contact electrode in contact with the first electrode and one end portion of the light emitting element, a second contact electrode in contact with the second electrode and another end portion of the light emitting element, and a second insulating pattern on the light emitting element and of which at least a portion is in contact with each of the first contact electrode and the second contact electrode, wherein the second insulating pattern includes a first upper surface not in contact with the first contact electrode or the second contact electrode.

Claims (14)

1. A method of fabricating a display device, the method comprising:

forming a first electrode and a second electrode on a substrate,

forming a light emitting element on the first electrode and the second electrode,

forming an insulating layer on the light emitting element;

forming a lift off layer on the insulating layer and patterning the insulating layer to form an insulating pattern on the light emitting element;

forming a metal layer on the first electrode, the second electrode, and the lift off layer,

removing the lift off layer, and

forming a first contact electrode in contact with one side surface of the insulating pattern and a second contact electrode in contact with another side surface of the insulating pattern,

wherein the insulating pattern comprises a first upper surface not in contact with the first contact electrode or the second contact electrode.

2. The method of claim 1 , wherein the first contact electrode is in contact with the first electrode and one end portion of the light emitting element, and the second contact electrode is in contact with the second electrode and another end portion of the light emitting element.

3. The method of claim 2 , wherein an upper surface of the insulating pattern is not in contact with the first contact electrode or the second contact electrode.

4. The method of claim 3 , wherein:

the forming of the lift off layer further comprises forming a hard mask layer between the insulating layer and the lift off layer; and

the insulating pattern comprises a region in which the one side surface and the other side surface are exposed and are not in contact with the first contact electrode or the second contact electrode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2022
From: CHANG, CHONG SUP; KIM, HYUN AE; HEO, EUI KANG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 059717/0204 →
Priority Claims (1)
KR 10-2019-0105691 · Aug 28, 2019 · national
Continuity (2)
Division 16910962 · Jun 24, 2020
Related Publication 20220263002A1 · Aug 18, 2022
Cited By (1)
US 12,677,509