IP Library Patent Application 18477616
Patent Application
App. No. 18/477,616

DISPLAY DEVICE

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Quick Facts
Patent No.
US None
App. No.
18/477,616
Abstract

According to an embodiment, a display device comprises a first substrate, a lower electrode, a rib including a pixel aperture, a partition on the rib, an organic layer covering the lower electrode, an upper electrode covering the organic layer, a first sealing layer formed of an inorganic material to continuously cover a thin film including the organic layer and the upper electrode, and the partition, a resin layer covering the first sealing layer, a second sealing layer formed of an inorganic material to cover the resin layer, a second substrate facing the second sealing layer, and an adhesive layer adhering the second sealing layer and the second substrate.

Claims (51)

1 . A display device comprising:

a first substrate;

a lower electrode arranged above the first substrate, in a display area including a pixel;

a rib including a pixel aperture overlapping with the lower electrode;

a partition arranged on the rib in the display area;

an organic layer which covers the lower electrode through the pixel aperture and which emits light in accordance with application of a voltage;

an upper electrode covering the organic layer;

a first sealing layer formed of an inorganic material to continuously cover a thin film including the organic layer and the upper electrode, and the partition;

a resin layer covering the first sealing layer;

a second sealing layer formed of an inorganic material to cover the resin layer;

a second substrate facing the second sealing layer; and

an adhesive layer adhering the second sealing layer and the second substrate.

2 . The display device of claim 1 , wherein

end portions of the thin film and the first sealing layer are located above the partition and covered with the resin layer.

3 . The display device of claim 2 , wherein

the partition includes a conductive lower portion and an upper portion which protrudes from a side surface of the lower portion, and

the resin layer is in contact with the upper portion.

4 . The display device of claim 1 , wherein

a thickness of the resin layer is five or less times as large as a height of the partition.

5 . The display device of claim 4 , wherein the thickness of the resin layer is larger than the height of the partition.

6 . The display device of claim 1 , wherein

an end portion of the resin layer is located in a surrounding area around the display area and is covered with the second sealing layer.

7 . The display device of claim 6 , wherein

an end portion of the second sealing layer is located in the surrounding area and covered with the adhesive layer.

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

a conductive layer arranged in a surrounding area around the display area, connected to the partition, and covered with the thin film, wherein

each of the partition and the conductive layer includes a conductive lower portion and an upper portion which protrudes from a side surface of the lower portion.

9 . The display device of claim 8 , wherein

the thin film is divided by an end portion of the conductive layer.

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

a conductive pad arranged in a surrounding area around the display area, and located between the first substrate and the second sealing layer in a thickness direction of the first substrate, wherein

the second sealing layer includes an aperture overlapping with the pad.

11 . The display device of claim 10 , wherein

the pad is exposed from the adhesive layer.

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

a dam structure including a plurality of protruding portions arranged in a surrounding area around the display area, wherein

the second sealing layer covers at least a part of the dam structure.

13 . The display device of claim 12 , wherein

a portion of the second sealing layer which covers the dam structure is covered with the adhesive layer.

14 . The display device of claim 12 , wherein

the dam structure surrounds the display area.

15 . The display device of claim 14 , further comprising:

a conductive layer arranged in the surrounding area, connected to the partition, and covered with the thin film, wherein

each of the partition and the conductive layer includes a conductive lower portion and an upper portion which protrudes from a side surface of the lower portion, and

the dam structure surrounds the conductive layer.

16 . The display device of claim 12 , further comprising:

a conductive pad arranged in the surrounding area, wherein

the dam structure includes a first protruding portion located between the pad and the display area, and a second protruding portion located between the pad and the first protruding portion,

the first protruding portion and the second protruding portion are covered with the second sealing layer,

the adhesive layer covers a portion of the second sealing layer, which covers the first protruding portion, and

the adhesive layer does not cover a portion of the second sealing layer, which covers the second protruding portion.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 27, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071751/0446 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 4, 2023
From: HANARI, JUN
To: JAPAN DISPLAY INC.
Reel/Frame 065114/0239 →