IP Library Granted Patent US 12,557,482
Granted Patent B2
US 12,557,482 · App. 18/334,411 · Granted Feb 17, 2026

Display device

Inventors: Yuko Matsumoto (Tokyo, JP); Kimitaka Ohata (Tokyo, JP); Hiraaki Kokame (Tokyo, JP)
Assignee: MAGNOLIA WHITE CORPORATION
H10K59/122H10K59/1201H10K59/352H10K59/873
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Quick Facts
Patent No.
US 12,557,482
App. No.
18/334,411
Granted
Feb 17, 2026
Kind
B2
Abstract

According to one embodiment, a display device includes a rib including first to third pixel apertures, a partition which includes a lower portion on the rib and an upper portion protruding from a side surface of the lower portion, first to third display elements overlapping the first to third pixel apertures, first to third sealing layers including first to third portions on the upper portion. At least two of a first width of an area in which the first portion overlaps the upper portion, a second width of an area in which the second portion overlaps the upper portion and a third width of an area in which the third portion overlaps the upper portion are different from each other.

Claims (24)

1 . A display device comprising:

a rib comprising a first pixel aperture, a second pixel aperture and a third pixel aperture;

a partition which includes a lower portion provided on the rib and an upper portion protruding from a side surface of the lower portion, and surrounds the first pixel aperture, the second pixel aperture and the third pixel aperture;

a first display element which includes a first lower electrode, a first upper electrode and a first organic layer provided between the first lower electrode and the first upper electrode, and overlaps the first pixel aperture;

a second display element which includes a second lower electrode, a second upper electrode and a second organic layer provided between the second lower electrode and the second upper electrode, and overlaps the second pixel aperture;

a third display element which includes a third lower electrode, a third upper electrode and a third organic layer provided between the third lower electrode and the third upper electrode, and overlaps the third pixel aperture;

a first sealing layer which covers the first display element and comprises a first portion located on the upper portion;

a second sealing layer which covers the second display element and comprises a second portion located on the upper portion; and

a third sealing layer which covers the third display element and comprises a third portion located on the upper portion, wherein

at least two of a first width of an area in which the first portion overlaps the upper portion, a second width of an area in which the second portion overlaps the upper portion and a third width of an area in which the third portion overlaps the upper portion are different from each other.

2 . The display device of claim 1 , wherein

the first width, the second width and the third width are different from each other.

3 . The display device of claim 1 , wherein

an area of the first pixel aperture is greater than an area of the third pixel aperture, and

the first width is less than the third width.

4 . The display device of claim 3 , wherein

the area of the first pixel aperture is greater than an area of the second pixel aperture,

the area of the third pixel aperture is less than the area of the second pixel aperture,

the first width is less than the second width, and

the third width is greater than the second width.

5 . The display device of claim 1 , wherein

the first organic layer emits blue light,

the second organic layer emits green light, and

the third organic layer emits red light.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 27, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071784/0533 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2023
From: MATSUMOTO, YUKO; OHATA, KIMITAKA; KOKAME, HIRAAKI
To: JAPAN DISPLAY INC.
Reel/Frame 063942/0913 →
Priority Claims (1)
JP 2022-096615 · Jun 15, 2022 · national
Continuity (1)
Related Publication 20230413612A1 · Dec 21, 2023
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