IP Library Granted Patent US 12,727,310
Granted Patent B2
US 12,727,310 · App. 17/567,769 · Granted Sep 1, 2026

Display device

Inventors: Do Yeong Park (Hwaseong-si, KR); Kyung Bae Kim (Seongnam-si, KR); Sung Chul Hong (Anyang-si, KR)
Assignee: Samsung Display Co., Ltd.
H10H29/142H10H20/821H10H20/831H10H20/84H10H20/851H10H20/855
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Quick Facts
Patent No.
US 12,727,310
App. No.
17/567,769
Granted
Sep 1, 2026
Kind
B2
Abstract

A display device includes an emission area and a sub-area spaced from the emission area in a first direction, a plurality of electrodes in the emission area and extending in the first direction, the plurality of electrodes being spaced from each other along a second direction crossing the first direction, a first insulating layer on the plurality of electrodes, and a plurality of light emitting elements on the first insulating layer, both ends of the plurality of light emitting elements being on the plurality of electrodes that are spaced from each other along the second direction, wherein the plurality of electrodes include a first electrode including a first portion and a second portion, the second portion of the first electrode having a width measured in the second direction that is smaller than a width of the first portion measured in the second direction.

Claims (46)

1 . A display device comprising:

an emission area and a sub-area spaced from the emission area in a first direction;

a plurality of electrodes in the emission area and extending in the first direction, the plurality of electrodes being spaced from each other along a second direction crossing the first direction;

a first insulating layer on the plurality of electrodes; and

a plurality of light emitting elements on the first insulating layer, both ends of the plurality of light emitting elements being on the plurality of electrodes that are spaced from each other along the second direction,

wherein the plurality of electrodes comprises a first electrode comprising a first portion and a second portion, the second portion of the first electrode having a width measured in the second direction that is smaller than a width of the first portion measured in the second direction, and

wherein the width of the first portion measured in the second direction gradually changes along the first direction over an entire length of the first portion, and

wherein a first side of the first portion of the first electrode protrudes in the second direction and a second side of the first portion of the first electrode is parallel to the first direction and is colinear with a side of the second portion of the first electrode.

2 . The display device of claim 1 , wherein the plurality of electrodes further comprises a second electrode spaced from the first electrode in the second direction, a third electrode between the first electrode and the second electrode, and a fourth electrode spaced from the second electrode in the second direction,

the fourth electrode comprises a first portion and a second portion, and

the first portion of the first electrode and the first portion of the fourth electrode are arranged side by side in the second direction.

3 . The display device of claim 2 , wherein a distance between the first electrode and the third electrode is equal to a distance between the second electrode and the fourth electrode, and

a distance between the first portion of the first electrode and the third electrode is equal to a distance between the second portion of the first electrode and the third electrode.

4 . The display device of claim 2 , wherein the second electrode and the third electrode have the same width as the second portion of the first electrode.

5 . The display device of claim 2 , further comprising:

a plurality of first banks overlapping the first electrode and the fourth electrode; and

a second bank overlapping the second electrode and the third electrode, wherein a distance between the first banks and the second bank is greater than a distance between the first electrode and the third electrode.

6 . The display device of claim 5 , wherein the second bank comprises a plurality of first bank portions and a second bank portion having a width measured in the second direction larger than that of the first bank portion,

the first bank portion is located at a portion of the third electrode that is facing the first portion of the first electrode, and

the second bank portion is located at a portion of the third electrode that is facing the second portion of the first electrode.

7 . The display device of claim 1 , wherein the plurality of electrodes further comprises a second electrode spaced from the first electrode in the second direction, the second electrode comprising a first portion and a second portion, and

both ends of the plurality of light emitting elements are on the first electrode and the second electrode.

8 . The display device of claim 1 , wherein at least a portion of each of the plurality of electrodes is in the sub-area, and

the first insulating layer comprises a plurality of contact portions in the sub-area and exposing a part of a top surface of the plurality of electrodes.

9 . The display device of claim 8 , further comprising a plurality of contact electrodes on the plurality of electrodes and in contact with some of the light emitting elements,

wherein the contact electrodes are in the emission area and the sub-area, and the contact electrodes contact with some of the electrodes through the plurality of contact portions in the sub-area.

10 . The display device of claim 1 , wherein the first electrode comprises a plurality of first portions spaced from each other in the first direction, and

the second portion is located between the plurality of first portions.

11 . The display device of claim 10 , wherein the plurality of light emitting elements comprises a first light emitting element group having one end on the first portion of the first electrode and a second light emitting element group having one end on other first portion of the first electrode, and

wherein the number of the light emitting elements of the first light emitting element group and the second light emitting element group is greater than the number of the light emitting elements having one end on the second portion of the first electrode.

12 . The display device of claim 11 , further comprising:

a color control structure on the light emitting elements;

a color filter layer on the color control structure; and

a first light blocking member on the color control structure and surrounding the color filter layer,

wherein the color filter layer overlaps the plurality of first portions of the first electrode, and wherein the first light blocking member comprises a portion overlapping the second portion of the first electrode.

13 . A display device comprising:

an emission area and a sub-area spaced from the emission area in a first direction;

a plurality of electrodes in the emission area and extending in the first direction, the plurality of electrodes being spaced from each other along a second direction crossing the first direction;

a first insulating layer on the plurality of electrodes; and

a plurality of light emitting elements on the first insulating layer, both ends of the plurality of light emitting elements being on the plurality of electrodes that are spaced from each other along the second direction,

wherein the plurality of electrodes comprises a first electrode comprising a first portion and a second portion, the second portion of the first electrode having a width measured in the second direction that is smaller than a width of the first portion measured in the second direction,

wherein the plurality of electrodes further comprises a second electrode spaced from the first electrode in the second direction, a third electrode between the first electrode and the second electrode, and a fourth electrode spaced from the second electrode in the second direction,

wherein the fourth electrode comprises a first portion and a second portion,

wherein the first portion of the first electrode and the first portion of the fourth electrode are arranged side by side in the second direction, and

wherein, an inner side of the first portion of the first electrode that is facing the third electrode is aligned in the first direction with an inner side of the second portion of the first electrode that is facing the third electrode.

14 . The display device of claim 13 , wherein in the first electrode, an outer side of the first portion of the first electrode protrudes from an outer side of the second portion of the first electrode in the second direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2022
From: PARK, DO YEONG; KIM, KYUNG BAE; HONG, SUNG CHUL
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 058776/0115 →
Priority Claims (1)
KR 10-2021-0000292 · Jan 4, 2021 · national
Continuity (1)
Related Publication 20220216264A1 · Jul 7, 2022
References Cited (33)
US 10818647B2 · Kim et al. · 2020 [cited by applicant]
US 10935828B2 · Jeong et al. · 2021 [cited by applicant]
US 11487143B2 · Jeong et al. · 2022 [cited by applicant]
US 11934058B2 · Jeong et al. · 2024 [cited by applicant]
US 12288833B2 · Yang et al. · 2025 [cited by applicant]
US 12382768B2 · Jeong et al. · 2025 [cited by applicant]
US 12393073B2 · Jeong et al. · 2025 [cited by applicant]
US 20140367705A1 · Bibl et al. · 2014 [cited by applicant]
US 20180188579A1 · Jeong · 2018 [cited by examiner]
US 20180323239A1 · Lee et al. · 2018 [cited by applicant]
US 20190386070A1 · Lee et al. · 2019 [cited by applicant]
US 20200403030A1 · Lee · 2020 [cited by examiner]
US 20210013190A1 · Kim et al. · 2021 [cited by applicant]
US 20210109624A1 · Lee et al. · 2021 [cited by applicant]
US 20210217739A1 · Lee et al. · 2021 [cited by applicant]
US 20210265324A1 · Kong et al. · 2021 [cited by applicant]
US 20250338687A1 · Jeong et al. · 2025 [cited by applicant]
US 20250341742A1 · Jeong et al. · 2025 [cited by applicant]
CN 108267903A · 2018 [cited by applicant]
CN 115803870A · 2023 [cited by applicant]
KR 20170141305A · 2017 [cited by applicant]
KR 1020180007025A · 2018 [cited by applicant]
KR 20180009014A · 2018 [cited by applicant]
KR 20180011404A · 2018 [cited by applicant]
KR 20180079080A · 2018 [cited by applicant]
KR 1020180122542A · 2018 [cited by applicant]
KR 1020200010706A · 2020 [cited by applicant]
KR 20200010701A · 2020 [cited by applicant]
KR 1020200027136A · 2020 [cited by applicant]
KR 20200034896A · 2020 [cited by applicant]
KR 20200129244A · 2020 [cited by applicant]
WO WO2020111452A1 · 2020 [cited by examiner]
WO WO2020226276A1 · 2020 [cited by examiner]