IP Library › Granted Patent US 12684930
Granted Patent B2
US 12684930 · App. 18/074,395 · Granted Jul 14, 2026

Display device

Inventors: Jun Seok Min (Suwon-si, KR); Won Tae Kim (Suwon-si, KR); Soo Hyun Moon (Suwon-si, KR); Woo Guen Jang (Seongnam-si, KR)
Assignee: Samsung Display Co., Ltd.
H10H29/37H10H20/8506H10H20/857H10W90/00
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Quick Facts
Patent No.
US 12684930
App. No.
18/074,395
Granted
Jul 14, 2026
Kind
B2
Abstract

A display device includes a first barrier wall and a second barrier wall spaced from each other on a substrate; a first electrode on the first barrier wall and extending in a first direction; a second electrode on the second barrier wall and spaced from the first electrode in a second direction, the second electrode extending in the first direction; and light emitting elements between the first and second barrier walls and on the first electrode and the second electrode, wherein the first barrier wall includes a first portion and a second portion that is located further from the second barrier wall than the first portion is, and the second barrier wall includes a third portion opposing the first portion and a fourth portion that is located further from the first barrier wall than the third portion is.

Claims (37)

1 . A display device comprising:

a first barrier wall and a second barrier wall spaced from each other on a substrate;

a first electrode on the first barrier wall and extending in a first direction;

a second electrode on the second barrier wall and spaced from the first electrode in a second direction, the second electrode extending in the first direction; and

light emitting elements between the first and second barrier walls and on the first electrode and the second electrode,

wherein the first barrier wall comprises a first portion and a second portion arranged alternately along the first direction in a plan view, wherein, in the plan view, the second portion is located further from the second barrier wall than the first portion is, and

wherein the second barrier wall comprises a third portion opposing the first portion and a fourth portion that is located further from the first barrier wall than the third portion is.

2 . The display device of claim 1 , wherein opposing inner sides of the second portion of the first barrier wall and the fourth portion of the second barrier wall are concave and inner sides of the first portion and the third portion oppose in the second direction, respectively, and

wherein a first distance between the first portion and the third portion is smaller than a second distance between the second portion and the fourth portion.

3 . The display device of claim 2 , wherein a length of the light emitting elements is smaller than the first distance and the second distance.

4 . The display device of claim 2 , wherein a distance between the first electrode and the second electrode is smaller than the first distance and a length of the light emitting elements.

5 . The display device of claim 1 , wherein the first electrode and the second electrode comprise opposing first sides that extend in parallel with each other, wherein an area of an overlapping portion between the first electrode and the first portion of the first barrier wall is greater than an area of an overlapping portion between the first electrode and the second portion of the first barrier wall, and

wherein an area of an overlapping portion between the second electrode and the third portion of the second barrier wall is greater than an area of an overlapping portion between the second electrode and the fourth portion of the second barrier wall.

6 . The display device of claim 5 , wherein in the first barrier wall, a width of the first portion is greater than of the second portion,

wherein in the second barrier wall, a width of the third portion is greater than a width of the fourth portion, and

wherein other sides opposite to one sides of the first barrier wall and the second barrier wall that oppose each other extend in the first direction in parallel with each other.

7 . The display device of claim 5 , wherein the first electrode and the second electrode comprise second sides opposite to the first sides, the second sides extending in parallel with each other, respectively.

8 . The display device of claim 5 , wherein in the first barrier wall, a width of the first portion is equal to a width of the second portion,

wherein in the second barrier wall, a width of the third portion is equal to a width of the fourth portion, and

wherein other sides opposite to one sides of the first barrier wall and the second barrier wall that oppose each other are not parallel with each other.

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

a first connection electrode on the first electrode and the first barrier wall and extending in the first direction; and

a second connection electrode on the second electrode and the second barrier wall and extending in the first direction,

wherein the first connection electrode and the second connection electrode comprise opposing sides extending in parallel with each other.

10 . The display device of claim 9 , wherein a distance between the first connection electrode and the second connection electrode is smaller than a length of the light emitting elements.

11 . The display device of claim 1 , wherein the light emitting elements comprise:

a first light emitting element located between the first portion of the first barrier wall and the third portion of the second barrier wall;

a second light emitting element located between the second portion of the first barrier wall and the fourth portion of the second barrier wall; and

a third light emitting element located between the first light emitting element and the second light emitting element.

12 . The display device of claim 1 , wherein the second portion and the fourth portion of the first barrier wall and the second barrier wall comprise outer sides having a shape inclined in a direction between the first direction and the second direction.

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

a third barrier wall spaced from the first barrier wall in the second direction with the second barrier wall interposed therebetween;

a third electrode between the first electrode and the second electrode and located on the second barrier wall; and

a fourth electrode on the third barrier wall and spaced from the second electrode in the second direction.

14 . The display device of claim 13 , wherein a distance between the first portion of the first barrier wall and the third portion of the second barrier wall is smaller than a distance between the second portion of the first barrier wall and the fourth portion of the second barrier wall, and

wherein a distance between the third portion of the second barrier wall and the third barrier wall is smaller than a distance between the fourth portion of the second barrier wall and the third barrier wall.

15 . The display device of claim 14 , wherein the second barrier wall comprises both sides of the fourth portion in the second direction, which are inwardly recessed toward a center of the second barrier wall from both sides of the third portion in the second direction.