IP Library › Granted Patent US 12,543,408
Granted Patent B2
US 12,543,408 · App. 17/450,060 · Granted Feb 3, 2026

Display device

Inventors: Do Yeong Park (Yongin-si, KR); Sung Jin Lee (Yongin-si, KR); Kyung Bae Kim (Yongin-si, KR); Ji Hye Lee (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H10H20/819H01L25/0753H10H20/83
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Quick Facts
Patent No.
US 12,543,408
App. No.
17/450,060
Granted
Feb 3, 2026
Kind
B2
Abstract

A display device including a plurality of pixels, each of the pixels including a first area and a second area and including: a first electrode and a second electrode in the first area; a plurality of light-emitting elements located between the first electrode and the second electrode in the first area; a first insulating layer in the first area and the second area; and a second insulating layer on the first insulating layer, wherein the first insulating layer includes a first opening in the second area, the second insulating layer includes a second opening overlapping the first opening, and a width of the first opening in a first direction is greater than a width of the second opening in the first direction.

Claims (44)

1 . A display device comprising a plurality of pixels, each of the pixels including a first area and a second area and comprising:

a first electrode and a second electrode in the first area, the first electrode being spaced from the second electrode in a first direction that is perpendicular to a second direction along a thickness of the display device;

a plurality of first light-emitting elements located between the first electrode and the second electrode in the first area, the plurality of first light-emitting elements being overlapping and electrically connected to the first electrode and the second electrode;

a first insulating layer in the first area and the second area, the first insulating layer being on the first and second electrodes; and

a second insulating layer on the first insulating layer,

wherein the first insulating layer includes a first opening in the second area, the second area being a non-emission area of the display device,

wherein the second insulating layer includes a second opening overlapping the first opening, the first opening in the non-emission area having a second light-emitting element different from the plurality of first light-emitting elements,

wherein the second light-emitting element has a same structure as at least one of the plurality of first light-emitting elements, and wherein the second light-emitting element is spaced from and electrically isolated from the first electrode and the second electrode; and

wherein a width of the first opening in the first direction is greater than a width of the second opening in the first direction.

2 . The display device of claim 1 , further comprising a bank surrounding the first area and the second area.

3 . The display device of claim 1 , wherein the first area includes a first emission area and a second emission area, and

the second area is located between the first emission area and the second emission area.

4 . The display device of claim 3 , wherein the second area is located between two first areas arranged along the second direction.

5 . The display device of claim 1 , wherein the second light-emitting element is an ineffective light-emitting element in the second area.

6 . The display device of claim 5 , wherein the first light-emitting elements are effective light sources, and the ineffective light-emitting element is an ineffective light source.

7 . The display device of claim 5 , wherein the second insulating layer at least partially covers the ineffective light-emitting element.

8 . The display device of claim 5 , wherein the ineffective light-emitting element is in the first opening.

9 . A display device comprising:

a first emission area, a second emission area, and a non-emission area located between the first emission area and the second emission area;

a first electrode and a second electrode in the first emission area;

a plurality of first light-emitting elements located between the first electrode and the second electrode, the plurality of first light-emitting elements being overlapping and electrically connected to the first electrode and the second electrode;

a third electrode and a fourth electrode in the second emission area;

a plurality of second light-emitting elements located between the third electrode and the fourth electrode;

at least one contact electrode electrically connecting one of the first electrode and the second electrode and one of the third electrode and the fourth electrode; and

an insulating layer in the first emission area, the second emission area, and the non-emission area, the insulating layer being on the first and second electrodes,

wherein the insulating layer includes an opening area in the non-emission area,

wherein a third light-emitting element is in the opening area in the non-emission area, wherein the third light-emitting element has a same structure as at least one of the plurality of first light-emitting elements or the plurality of second light-emitting elements, and wherein the third light-emitting element is spaced from and electrically isolated from the first electrode and the second electrode.

10 . The display device of claim 9 , wherein the opening area includes:

a first opening area between the first electrode and the third electrode; and

a second opening area between the second electrode and the fourth electrode.

11 . The display device of claim 10 , wherein a width of the first opening area in a first direction is greater than a width of the second opening area in the first direction.

12 . The display device of claim 9 , wherein the plurality of first light-emitting elements and the plurality of second light-emitting elements are connected in series.

13 . The display device of claim 9 , wherein the insulating layer comprises:

a first insulating layer; and

a second insulating layer on the first insulating layer.

14 . The display device of claim 13 , wherein the first insulating layer includes a first opening overlapping the opening area, and

the second insulating layer includes a second opening overlapping the first opening.

15 . The display device of claim 14 , wherein a width of the first opening in a first direction is greater than a width of the second opening in the first direction.

16 . The display device of claim 14 , wherein the third light-emitting element comprises an ineffective light-emitting element in the opening area.

17 . The display device of claim 16 , wherein the plurality of first light-emitting elements and the plurality of second light-emitting elements are effective light sources, and

the ineffective light-emitting element is an ineffective light source.

18 . The display device of claim 16 , wherein the second insulating layer at least partially covers the ineffective light-emitting element.

19 . The display device of claim 16 , wherein the ineffective light-emitting element is in the first opening.

20 . The display device of claim 9 , further comprising a bank surrounding the first emission area, the second emission area, and the non-emission area.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 5, 2021
From: PARK, DO YEONG; LEE, SUNG JIN; KIM, KYUNG BAE; LEE, JI HYE
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 057708/0496 →
Priority Claims (1)
KR 10-2020-0137836 · Oct 22, 2020 · national
Continuity (1)
Related Publication 20220131038A1 · Apr 28, 2022
References Cited (35)
US 10249603B2 · Cho et al. · 2019 [cited by applicant]
US 10276630B2 · Lee et al. · 2019 [cited by applicant]
US 10340419B2 · Kim et al. · 2019 [cited by applicant]
US 10672946B2 · Cho et al. · 2020 [cited by applicant]
US 10761378B2 · Hong et al. · 2020 [cited by applicant]
US 10818647B2 · Kim et al. · 2020 [cited by applicant]
US 12080830B2 · Lee et al. · 2024 [cited by applicant]
US 20170005155A1 · You · 2017 [cited by examiner]
US 20170104009A1 · Peng et al. · 2017 [cited by applicant]
US 20180034000A1 · Lee · 2018 [cited by examiner]
US 20180136527A1 · Park · 2018 [cited by examiner]
US 20180175104A1 · Kang · 2018 [cited by examiner]
US 20190198811A1 · Choi · 2019 [cited by examiner]
US 20190244985A1 · Kim · 2019 [cited by examiner]
US 20190251898A1 · Cho · 2019 [cited by examiner]
US 20190319168A1 · Kim · 2019 [cited by examiner]
US 20200020741A1 · Woo · 2020 [cited by applicant]
US 20200411492A1 · Ju · 2020 [cited by examiner]
US 20210202608A1 · Lee · 2021 [cited by examiner]
US 20210265324A1 · Kong et al. · 2021 [cited by applicant]
US 20220130810A1 · Park et al. · 2022 [cited by applicant]
JP 2005302712A · 2005 [cited by examiner]
KR 1020180007025A · 2018 [cited by applicant]
KR 1020180007376A · 2018 [cited by applicant]
KR 1020180009014A · 2018 [cited by applicant]
KR 1020180011404A · 2018 [cited by applicant]
KR 1020190062654A · 2019 [cited by applicant]
KR 101987196B1 · 2019 [cited by applicant]
KR 1020200008075A · 2020 [cited by applicant]
KR 1020200010706A · 2020 [cited by applicant]
KR 1020200021014A · 2020 [cited by applicant]
KR 1020200088961A · 2020 [cited by applicant]
KR 1020220053765A · 2022 [cited by applicant]
WO WO2020209484A1 · 2020 [cited by applicant]
Machine Translation of JP2005302712A (Year: 2005). [cited by examiner]