IP Library › Granted Patent US 12,471,425
Granted Patent B2
US 12,471,425 · App. 18/049,967 · Granted Nov 11, 2025

Display device and method of manufacturing the same

Inventors: Hyundeok Im (Yongin-si, KR); Jonghyuk Kang (Yongin-si, KR); Daehyun Kim (Yongin-si, KR); Jooyeol Lee (Yongin-si, KR); Hyunmin Cho (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H10H20/857H01L25/0753H05K1/0295H05K1/0296H05K1/111H10H20/812H10H20/813H10H20/819H10H20/8316H10H20/0364
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Quick Facts
Patent No.
US 12,471,425
App. No.
18/049,967
Granted
Nov 11, 2025
Kind
B2
Abstract

A display device includes a substrate, a first electrode extending in a first direction on the substrate, a first partition wall extending in the first direction on a central portion of the first electrode, a second electrode extending in parallel with the first electrode on the substrate, a second partition wall extending in the first direction on a central portion of the second electrode, and a plurality of light-emitting diodes electrically connected between the first electrode and the second electrode.

Claims (58)

1 . A display device comprising:

a substrate;

a first electrode on a surface of the substrate;

a first structure on the first electrode;

a second electrode on the surface of the substrate and spaced apart from the first electrode;

a second structure on the second electrode; and

a light-emitting diode on the first electrode and the second electrode,

wherein each of the first structure and the second structure comprises an organic insulating material,

wherein the light-emitting diode is spaced apart from the first structure and the second structure,

wherein a height of an upper surface of the first structure and the second structure from the surface of the substrate is greater than a height of an upper surface of the light-emitting diode from the surface of the substrate,

wherein the light-emitting diode overlaps the first electrode in a direction perpendicular to the surface of the substrate, and

wherein the light-emitting diode overlaps the second electrode in the direction perpendicular to the surface of the substrate.

2 . The display device of claim 1 , wherein an interval between the first electrode and the second electrode is less than a length of the light-emitting diode.

3 . The display device of claim 1 , wherein an interval between the first structure and the second structure is greater than a length of the light-emitting diode.

4 . The display device of claim 1 , wherein a width of a cross-section of the first structure and the second structure is not reduced in a direction that extends away from the substrate.

5 . The display device of claim 1 , wherein a first width of the upper surface of the first structure and the second structure is greater than a second width of a lower surface of the first structure and the second structure.

6 . The display device of claim 1 , wherein scattering particles are dispersed in the organic insulating material.

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

a first connection electrode on the first electrode; and

a second connection electrode on the second electrode.

8 . The display device of claim 7 , wherein the first connection electrode contacts the first electrode and a first end of the light-emitting diode, and

the second connection electrode contacts the second electrode and a second end of the light-emitting diode opposite to the first end.

9 . The display device of claim 7 ,

wherein at least a portion of the first connection electrode is on the first structure, and

wherein at least a portion of the second connection electrode is on the second structure.

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

a pixel-defining layer over the substrate and in which an opening exposing an emission region is defined,

wherein the light-emitting diode, the first structure, and the second structure are arranged in the emission region.

11 . A display device comprising:

a substrate;

a first electrode on a surface of the substrate;

a first structure on the first electrode;

a second electrode on the surface of the substrate and spaced apart from the first electrode;

a second structure on the second electrode;

a light-emitting diode on the first electrode and the second electrode; and

a pixel-defining layer over the substrate and in which an opening exposing an emission region is defined,

wherein the light-emitting diode, the first structure, and the second structure are arranged in the emission region,

wherein the light-emitting diode is spaced apart from the first structure and the second structure,

wherein a height of an upper surface of the first structure and the second structure from the surface of the substrate is greater than a height of an upper surface of the light-emitting diode from the surface of the substrate,

wherein the light-emitting diode overlaps the first electrode in a direction perpendicular to the surface of the substrate,

wherein the light-emitting diode overlaps the second electrode in the direction perpendicular to the surface of the substrate, and

wherein the first structure and the second structure comprise a same material as that of the pixel-defining layer.

12 . The display device of claim 10 , further comprising:

a capping layer filling the opening of the pixel-defining layer and covering lateral surfaces of the first structure and the second structure.

13 . The display device of claim 12 , wherein a refractive index of a material of the first structure and the second structure is greater than a refractive index of a material of the capping layer.

14 . A display device comprising:

a substrate;

a first electrode on a surface of the substrate;

a first structure on the first electrode;

a second electrode on the surface of the substrate and spaced apart from the first electrode;

a second structure on the second electrode; and

a light-emitting diode on the first electrode and the second electrode,

wherein each of the first structure and the second structure comprises an organic insulating material,

wherein the light-emitting diode is spaced apart from the first structure and the second structure,

wherein a height of an upper surface of the first structure and the second structure from the surface of the substrate is greater than a height of an upper surface of the light-emitting diode from the surface of the substrate, and

wherein the light-emitting diode overlaps a space between the first electrode and the second electrode.

15 . The display device of claim 14 , wherein the light-emitting diode overlaps the first electrode in a direction perpendicular to the surface of the substrate, and

wherein the light-emitting diode overlaps the second electrode in the direction perpendicular to the surface of the substrate.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2022
From: IM, HYUNDEOK; KANG, JONGHYUK; KIM, DAEHYUN; LEE, JOOYEOL; CHO, HYUNMIN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 061550/0708 →
Priority Claims (1)
KR 10-2017-0133484 · Oct 13, 2017 · national
Continuity (3)
Continuation 17061144 · Oct 1, 2020
Continuation 16154856 · Oct 9, 2018
Related Publication 20230066918A1 · Mar 2, 2023
References Cited (47)
US 7381625B2 · Xi et al. · 2008 [cited by applicant]
US 7612385B2 · Kim · 2009 [cited by examiner]
US 9112112B2 · Do et al. · 2015 [cited by applicant]
US 9287242B2 · Shibata · 2016 [cited by examiner]
US 9773761B2 · Do · 2017 [cited by applicant]
US 9786712B2 · Fujimoto et al. · 2017 [cited by applicant]
US 11063194B2 · Do et al. · 2021 [cited by applicant]
US 20060023451A1 · Han et al. · 2006 [cited by applicant]
US 20080111143A1 · Ishida et al. · 2008 [cited by applicant]
US 20080251381A1 · Shibata et al. · 2008 [cited by applicant]
US 20110033976A1 · Di Cioccio et al. · 2011 [cited by applicant]
US 20110089850A1 · Shibata et al. · 2011 [cited by applicant]
US 20110254043A1 · Negishi et al. · 2011 [cited by applicant]
US 20120007129A1 · Beom et al. · 2012 [cited by applicant]
US 20120326181A1 · Shibata et al. · 2012 [cited by applicant]
US 20130082271A1 · Kanegae · 2013 [cited by applicant]
US 20140124801A1 · Lee · 2014 [cited by applicant]
US 20140145237A1 · Do et al. · 2014 [cited by applicant]
US 20140159064A1 · Sakariya et al. · 2014 [cited by applicant]
US 20150124455A1 · Tamura et al. · 2015 [cited by applicant]
US 20150295146A1 · Ikegami et al. · 2015 [cited by applicant]
US 20160141457A1 · Ha et al. · 2016 [cited by applicant]
US 20160148911A1 · Do · 2016 [cited by applicant]
US 20160211245A1 · Do · 2016 [cited by applicant]
US 20170317228A1 · Sung · 2017 [cited by applicant]
US 20170338372A1 · Teraguchi · 2017 [cited by examiner]
US 20170358563A1 · Cho · 2017 [cited by examiner]
US 20180019369A1 · Cho · 2018 [cited by examiner]
US 20190019930A1 · Do · 2019 [cited by examiner]
US 20190096858A1 · Woo et al. · 2019 [cited by applicant]
US 20210210666A1 · Do et al. · 2021 [cited by applicant]
EP 2546900A1 · 2013 [cited by applicant]
KR 100592508B1 · 2006 [cited by applicant]
KR 1020120120377A · 2012 [cited by applicant]
KR 1020120122159A · 2012 [cited by applicant]
KR 1020150006798A · 2015 [cited by applicant]
KR 101490758B1 · 2015 [cited by applicant]
KR 101672781B1 · 2016 [cited by applicant]
KR 101711187B1 · 2017 [cited by applicant]
KR 101713818B1 · 2017 [cited by applicant]
KR 101730977B1 · 2017 [cited by applicant]
WO WO2015005654A1 · 2015 [cited by applicant]
WO WO2016080710A1 · 2016 [cited by applicant]
WO WO2017123039A1 · 2017 [cited by applicant]
Extended European Search Report for corresponding European Patent Application No. 17181066.6, dated Nov. 27, 2017, 7 pages. [cited by applicant]
European Patent Office Action for corresponding European Patent Application No. 17 181 066.6, dated Jan. 21, 2019, 8 pages. [cited by applicant]
Office Action issued in U.S. Appl. No. 15/646,590 by the USPTO, dated Jun. 26, 2018, 14 pages. [cited by applicant]