IP Library › Granted Patent US 11,527,522
Granted Patent B2
US 11,527,522 · App. 17/349,433 · Granted Dec 13, 2022

Display device and method of fabricating the same

Inventors: Sangjin Park (Yongin-si, KR); Heena Kim (Hwaseong-si, KR); Youngseok Baek (Hwaseong-si, KR); Donghyun Yang (Seongnam-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L25/167H01L27/124
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Quick Facts
Patent No.
US 11,527,522
App. No.
17/349,433
Granted
Dec 13, 2022
Kind
B2
Abstract

A method of fabricating a display device includes forming a circuit layer on a base layer, forming a first preliminary electrode and a second preliminary electrode on the circuit layer, forming a photoresist layer on the first preliminary electrode and the second preliminary electrode, patterning the photoresist layer to form a photoresist pattern, treating a region of each of the first preliminary electrode and the second preliminary electrode to form a first electrode and a second electrode having regions of lower and higher electrical resistance, and disposing a light-emitting element on the first electrode and the second electrode at regions having lower electrical resistance.

Claims (25)

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

forming a circuit layer on a base layer;

forming a first preliminary electrode and a second preliminary electrode on the circuit layer;

forming a photoresist layer on the first preliminary electrode and the second preliminary electrode;

patterning the photoresist layer to form a photoresist pattern;

treating a region of each of the first preliminary electrode and the second preliminary electrode to form a first electrode and a second electrode having regions of lower and higher electrical resistance; and

disposing a light-emitting element on the first electrode and the second electrode at regions having lower electrical resistance.

2. The method of claim 1 , wherein

the first electrode comprises a first region and a second region,

the second electrode comprises a third region and a fourth region, and

the second region and the fourth region comprise treated regions.

3. The method of claim 2 , wherein

the first region and the third region include indium tin oxide, and

the second region and the fourth region include indium tin oxide that is doped with oxygen ions.

4. The method of claim 2 , wherein

the first region and the third region include aluminum, and

the second region and the fourth region include aluminum oxide.

5. The method of claim 2 , wherein the second region and the fourth region are amorphous regions.

6. The method of claim 1 , wherein the treating step comprises injecting an ion into the first preliminary electrode and the second preliminary electrode.

7. The method of claim 6 , wherein the ion is an oxygen ion.

8. The method of claim 1 , wherein the treating step comprises injecting nitrogen or argon atoms or plasma to the first preliminary electrode and the second preliminary electrode.

9. The method of claim 1 , wherein the disposing step comprises:

providing solution, in which the light-emitting element and solvent are contained, on the first electrode and the second electrode;

aligning the light-emitting element; and

evaporating the solvent.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2021
From: PARK, SANGJIN; KIM, HEENA; BAEK, YOUNGSEOK; YANG, DONGHYUN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056611/0572 →
Priority Claims (1)
KR 10-2018-0143736 · Nov 20, 2018 · national
Continuity (2)
Division 16673953 · Nov 4, 2019
Related Publication 20210313307A1 · Oct 7, 2021