Display device

Patent metadata

Field	Value
Publication number	US-12520707-B2
Application number	US-202318156410-A
Country	US
Kind code	B2
Filing date	Jan 19, 2023
Priority date	Jan 20, 2022
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

According to one embodiment, a display device includes a substrate, an insulating layer above the substrate, a lower electrode above the insulating layer in a display area, an upper electrode facing the lower electrode, an organic layer provided in the display area and a surrounding area, and a first ridge in the surrounding area. The first ridge includes a lower portion, and an upper portion provided on the lower portion and including an end portion protruding from a side surface of the lower portion. At least part of the organic layer is divided by the first ridge in the surrounding area.

First claim

What is claimed is:

1 . A display device comprising:
a substrate; an insulating layer provided above the substrate; a lower electrode provided above the insulating layer in a display area including a pixel; an upper electrode facing the lower electrode; an organic layer provided in the display area and a surrounding area around the display area such that a portion provided in the display area is located between the lower electrode and the upper electrode and emits light based on a potential difference between the lower electrode and the upper electrode; a pixel circuit provided in the display area and applying voltage to the lower electrode; a drive circuit provided in the surrounding area and supplying a signal to the pixel circuit; and a first ridge provided in the surrounding area and surrounding the display area as seen in plan view, wherein the first ridge includes a lower portion, and an upper portion provided on the lower portion and comprising an end portion protruding from a side surface of the lower portion, at least part of the organic layer is divided by the first ridge in the surrounding area, and the first ridge is located between the drive circuit and an end portion of the substrate as seen in plan view.

2 . A display device comprising:
a substrate; an insulating layer provided above the substrate; a lower electrode provided above the insulating layer in a display area including a pixel; an upper electrode facing the lower electrode; an organic layer provided in the display area and a surrounding area around the display area such that a portion provided in the display area is located between the lower electrode and the upper electrode and emits light based on a potential difference between the lower electrode and the upper electrode; a first ridge provided in the surrounding area; an insulating second ridge provided in the surrounding area, wherein the first ridge includes a lower portion, and an upper portion provided on the lower portion and comprising an end portion protruding from a side surface of the lower portion, at least part of the organic layer is divided by the first ridge in the surrounding area the lower portion is conductive, and the organic layer continuously covers a side surface and an upper surface of the second ridge.

3 . The display device of claim 2 , wherein
the second ridge surrounds the display area as seen in plan view.

4 . The display device of claim 2 , wherein
the second ridge includes at least two second ridges, and the first ridge is provided between the two second ridges adjacent to each other.

5 . A display device comprising:
a substrate; an insulating layer provided above the substrate; a lower electrode provided above the insulating layer in a display area including a pixel; an upper electrode facing the lower electrode; an organic layer provided in the display area and a surrounding area around the display area such that a portion provided in the display area is located between the lower electrode and the upper electrode and emits light based on a potential difference between the lower electrode and the upper electrode; a first ridge provided in the surrounding area; a rib comprising an aperture overlapping the lower electrode; and a partition provided above the rib in the display area, wherein the first ridge includes a lower portion, and an upper portion provided on the lower portion and comprising an end portion protruding from a side surface of the lower portion, at least part of the organic layer is divided by the first ridge in the surrounding area the partition is formed of a same material as the first ridge, the organic layer includes a first organic layer which is in contact with the lower electrode through the aperture, a second organic layer located on the partition and spaced apart from the first organic layer, and a third organic layer provided in the surrounding area, and at least part of the third organic layer is divided by the first ridge.

6 . The display device of claim 5 , further comprising:
a feed line provided in the surrounding area; and a conductive layer provided above the rib in the surrounding area and connected to the feed line and the partition.

7 . The display device of claim 6 , wherein
the feed line is located between the insulating layer and the rib, the rib comprises a plurality of contact holes provided in the surrounding area, and the conductive layer is connected to the feed line through the contact holes.

8 . The display device of claim 7 , wherein
the contact holes extend in a first direction longwise, and are arranged in a second direction intersecting with the first direction.

9 . The display device of claim 7 , wherein
the conductive layer comprises a plurality of apertures smaller than the contact holes.

10 . The display device of claim 6 , wherein
the conductive layer surrounds the display area.

11 . The display device of claim 6 , wherein
at least part of the organic layer is divided by the conductive layer.

12 . The display device of claim 6 , wherein
the first ridge surrounds the conductive layer.

13 . A display device comprising:
a substrate; an insulating layer provided above the substrate; a lower electrode provided above the insulating layer in a display area including a pixel; an upper electrode facing the lower electrode; an organic layer provided in the display area and a surrounding area around the display area such that a portion provided in the display area is located between the lower electrode and the upper electrode and emits light based on a potential difference between the lower electrode and the upper electrode; a first ridge provided in the surrounding area; a first sealing layer formed of an inorganic material and covering the organic layer located in the surrounding area; and a first resinous layer which covers the first sealing layer, wherein the first ridge includes a lower portion, and an upper portion provided on the lower portion and comprising an end portion protruding from a side surface of the lower portion, and at least part of the organic layer is divided by the first ridge in the surrounding area.

14 . The display device of claim 13 , further comprising a second sealing layer formed of an inorganic material and covering the first resinous layer, wherein
the second sealing layer is in contact with the first sealing layer outside an end portion of the first resinous layer.

15 . The display device of claim 14 , further comprising a second resinous layer which covers the second sealing layer.

Assignees

• Magnolia White Corp

Inventors

• Tabatake Hiroshi

Classifications

• H10K59/122

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

• H10K59/873 Primary

  Encapsulations · CPC title