IP Library Granted Patent US 12,419,182
Granted Patent B2
US 12,419,182 · App. 17/846,025 · Granted Sep 16, 2025

Display device including a transparent conductive layer covering optical adjustment layers

Inventors: Masumi Nishimura (Tokyo, JP); Hayata Aoki (Tokyo, JP); Hiroumi Kinjo (Tokyo, JP)
Assignee: Magnolia White Corporation
H10K59/876H10K50/81H10K50/82H10K50/852H10K59/80522H10K71/00
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Quick Facts
Patent No.
US 12,419,182
App. No.
17/846,025
Granted
Sep 16, 2025
Kind
B2
Abstract

According to one embodiment, a display device includes a first bottom electrode, a second bottom electrode, a first organic layer covering the first bottom electrode, a second organic layer covering the second bottom electrode, a first top electrode covering the first organic layer, a second top electrode covering the second organic layer, a first optical adjustment layer disposed on the first top electrode, a second optical adjustment layer disposed on the second top electrode, and a transparent conductive layer covering the first optical adjustment layer and the second optical adjustment layer, and being in contact with the first top electrode and the second top electrode.

Claims (31)

1. A display device comprising:

a base material;

a first insulating layer disposed on the base material;

a first bottom electrode disposed on the first insulating layer and a second bottom electrode disposed on the first insulating layer;

a second insulating layer disposed on the first insulating layer, and comprising a first opening portion overlapping the first bottom electrode and a second opening portion overlapping the second bottom electrode;

a first organic layer including a first light emitting layer, disposed in the first opening portion, and covering the first bottom electrode;

a second organic layer including a second light emitting layer, disposed in the second opening portion, and covering the second bottom electrode;

a first top electrode covering the first organic layer;

a second top electrode covering the second organic layer and spaced apart from the first top electrode;

a first optical adjustment layer disposed on the first top electrode;

a second optical adjustment layer disposed on the second top electrode and spaced apart from the first optical adjustment layer; and

a transparent conductive layer covering the first optical adjustment layer and the second optical adjustment layer, being in contact with the first top electrode and the second top electrode, and electrically connecting the first top electrode and the second top electrode to each other, wherein

each of the first organic layer and the second organic layer is thicker than the second insulating layer,

the first top electrode and the second top electrode face each other at an interval on the second insulating layer, and

the transparent conductive layer is in direct contact with the second insulating layer between the first top electrode and the second top electrode.

2. The display device of claim 1 , wherein

an emission spectrum of the first light emitting layer is different from an emission spectrum of the second light emitting layer, and

a thickness of the first optical adjustment layer is different from a thickness of the second optical adjustment layer.

3. The display device of claim 1 , wherein

the second insulating layer is an inorganic insulating layer.

4. The display device of claim 1 , wherein

the transparent conductive layer covers an end surface of the first optical adjustment layer and an end surface of the second optical adjustment layer directly above the second insulating layer.

5. The display device of claim 1 , wherein

the first organic layer includes a first side surface on the second insulating layer,

the second organic layer includes a second side surface on the second insulating layer,

the first top electrode covers the first side surface, and

the second top electrode covers the second side surface.

6. The display device of claim 5 , wherein

a part of the first side surface and a part of the second side surface face each other and form a recess portion.

7. The display device of claim 6 , wherein

the transparent conductive layer is disposed in the recess portion and covers the first top electrode and the second top electrode.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 27, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071741/0492 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2022
From: NISHIMURA, MASUMI; AOKI, HAYATA; KINJO, HIROUMI
To: JAPAN DISPLAY INC.
Reel/Frame 060273/0427 →
Priority Claims (1)
JP 2021-104902 · Jun 24, 2021 · national
Continuity (1)
Related Publication 20220416209A1 · Dec 29, 2022
References Cited (4)
US 20170104036A1 · Maeda · 2017 [cited by examiner]
US 20190334112A1 · Lee · 2019 [cited by examiner]
JP 201456666A · 2014 [cited by applicant]
WO WO2014041743A1 · 2014 [cited by examiner]