IP Library Granted Patent US 9,972,667
Granted Patent B2
US 9,972,667 · App. 15/701,751 · Granted May 15, 2018

Display device

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Quick Facts
Patent No.
US 9,972,667
App. No.
15/701,751
Granted
May 15, 2018
Kind
B2
Abstract

A display device includes a substrate having an insulating surface; a plurality of pixel electrodes on the insulating surface, the plurality of pixel electrodes located away from each other; a first insulating layer covering an end of each of the pixel electrodes and exposing a part of a top surface of each of the pixel electrodes; and an organic layer provided on each of the pixel electrodes, the organic layer including a light emitting layer. As seen in a plan view, the first insulating layer includes a plurality of first regions, each of the plurality of first regions being around the exposed part of the top surface of the pixel electrodes, and a second region located between two adjacent first regions, the second region including a recessed portion.

Claims (24)

1. A display device, comprising:

a substrate having an insulating surface;

a plurality of pixel electrodes on the insulating surface, the plurality of pixel electrodes located away from each other;

a first insulating layer covering an end of each of the pixel electrodes and exposing a part of a top surface of each of the pixel electrodes; and

an organic layer provided on each of the pixel electrodes, the organic layer including a light emitting layer, wherein

as seen in a plan view, the first insulating layer includes a plurality of first regions, each of the plurality of first regions being around the exposed part of the top surface of the pixel electrodes, and a second region located between two adjacent first regions, the second region including a recessed portion.

2. The display device according to claim 1 , wherein

a distance between the insulating surface and a top surface of the first insulating layer in the first region is greater than a distance between the insulating surface and the top surfaces of the pixel electrodes.

3. The display device according to claim 1 , wherein

as seen in a plan view, each of the plurality of first regions is provided so as to surround the exposed part of the top surface of each of the pixel electrode continuously.

4. The display device according to claim 1 , wherein

in each of the plurality of first regions, the first insulating layer has a groove provided along the exposed part of the top surface of each of the pixel electrodes.

5. The display device according to claim 4 , wherein

a bottom surface of the recessed portion and a bottom surface of the groove are in the same plane as each other.

6. The display device according to claim 1 , further comprising a second insulating layer, wherein

the plurality of pixel electrodes are provided on the second insulating layer, and

as seen in a plan view, the second insulating layer has an opening in a region corresponding to a region including one of the first regions and the second region.

7. The display device according to claim 6 , wherein

a top surface of the first insulating layer in the first region and the top surfaces of the pixel electrodes are in the same plane as each other.

8. The display device according to claim 1 , wherein

the first insulating layer further includes a third region surrounded by the second region as seen in a plan view, and

a distance between the insulating surface and a top surface of the first insulating layer in the third region is greater than a distance between the insulating surface and a bottom surface of the recessed portion.

9. The display device according to claim 8 , wherein

a top surface of the first insulating layer in the first region and the top surface of the first insulating layer in the third region are in the same plane as each other.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2017
From: KIMURA, YASUKAZU; NISHINOHARA, TAKUMA; ITOGA, TOSHIHIKO; AKIMOTO, HAJIME
To: JAPAN DISPLAY INC.
Reel/Frame 043558/0381 →