Display device

Patent metadata

Field	Value
Publication number	US-2024389411-A1
Application number	US-202418664457-A
Country	US
Kind code	A1
Filing date	May 15, 2024
Priority date	May 17, 2023
Publication date	Nov 21, 2024
Grant date	—

Abstract

According to one embodiment, a display device includes subpixels each of which includes a lower electrode, an upper electrode and an organic layer between the lower and upper electrodes, and a partition which includes a lower portion and an upper portion protruding from a side surface of the lower portion and surrounds each of the subpixels. In the embodiment, the partition includes a first partition in which the lower portion includes first and second conductive layers which overlap each other, and a second partition in which the lower portion includes an insulating layer and the second conductive layer provided on the insulating layer.

First claim

What is claimed is:

1 . A display device comprising:
a plurality of subpixels each of which includes a lower electrode, an upper electrode facing the lower electrode, and an organic layer provided between the lower electrode and the upper electrode and emitting light based on a potential difference between the lower electrode and the upper electrode; and a partition which includes a lower portion and an upper portion protruding from a side surface of the lower portion, and surrounds each of the subpixels, wherein the partition comprises:
a first partition in which the lower portion includes first and second conductive layers which overlap each other; and
a second partition in which the lower portion includes an insulating layer and the second conductive layer provided on the insulating layer.

2 . The display device of claim 1 , wherein
at least one side faces the first partition in each of the subpixels.

3 . The display device of claim 1 , wherein
the upper electrode of each of the subpixels is in contact with a side surface of the lower portion of the first partition.

4 . The display device of claim 1 , wherein
the partition includes a plurality of second partitions which extend parallel to each other.

5 . The display device of claim 1 , wherein
the subpixels include a plurality of first subpixels which display a first color, a plurality of second subpixels which display a second color and a plurality of third subpixels which display a third color, an aperture ratio of each of the first subpixels is greater than an aperture ratio of each of the second subpixels and an aperture ratio of each of the third subpixels, and at least one side of each of the first subpixels faces the second partition.

6 . The display device of claim 5 , wherein
three sides of each of the first subpixels face the second partition.

7 . The display device of claim 5 , wherein
the first subpixels are linearly arranged between the first partition and the second partition, and the partition is not provided between the adjacent first subpixels.

8 . The display device of claim 7 , wherein
the partition further comprises a connection portion which connects the first partition and the second partition to each other in an end portion of a display area including the subpixels.

9 . The display device of claim 7 , wherein
the partition further comprises a connection portion which connects the first partition and the second partition to each other in a surrounding area around a display area which includes the subpixels.

10 . The display device of claim 5 , wherein
the first subpixels are linearly arranged between the first partition and the second partition, the second partition has a protrusion which extends toward the first partition between the adjacent first subpixels, and a distal end of the protrusion is spaced apart from the first partition.

11 . A display device comprising:
a plurality of subpixels each of which includes a lower electrode, an upper electrode facing the lower electrode, and an organic layer provided between the lower electrode and the upper electrode and emitting light based on a potential difference between the lower electrode and the upper electrode; and a partition which includes a lower portion and an upper portion protruding from a side surface of the lower portion and surrounds each of the subpixels, wherein the partition comprises:
a first partition in which the lower portion has a first height; and
a second partition in which the lower portion has a second height which is less than the first height.

12 . The display device of claim 11 , wherein
at least one side faces the first partition in each of the subpixels.

13 . The display device of claim 11 , wherein
the upper electrode of each of the subpixels is in contact with a side surface of the lower portion of the first partition.

14 . The display device of claim 11 , wherein
the partition includes a plurality of second partitions which extend parallel to each other.

15 . The display device of claim 11 , wherein
the subpixels include a plurality of first subpixels which display a first color, a plurality of second subpixels which display a second color and a plurality of third subpixels which display a third color, an aperture ratio of each of the first subpixels is greater than an aperture ratio of each of the second subpixels and an aperture ratio of each of the third subpixels, and at least one side of each of the first subpixels faces the second partition.

16 . The display device of claim 15 , wherein
three sides of each of the first subpixels face the second partition.

17 . The display device of claim 15 , wherein
the first subpixels are linearly arranged between the first partition and the second partition, and the partition is not provided between the adjacent first subpixels.

18 . The display device of claim 17 , wherein
the partition further comprises a connection portion which connects the first partition and the second partition to each other in an end portion of a display device including the subpixels.

19 . The display device of claim 17 , wherein
the partition further comprises a connection portion which connects the first partition and the second partition to each other in a surrounding area around a display area including the subpixels.

20 . The display device of claim 15 , wherein
the first subpixels are linearly arranged between the first partition and the second partition, the second partition has a protrusion which extends toward the first partition between the adjacent first subpixels, and a distal end of the protrusion is spaced apart from the first partition.

Assignees

• Japan Display Inc

Inventors

• Hanari Jun
• Miyake Hidekazu

Classifications

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/352

  the areas of the RGB subpixels being different · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title