IP Library Granted Patent US 10,043,995
Granted Patent B2
US 10,043,995 · App. 15/881,160 · Granted Aug 7, 2018

Organic electroluminescence display device

Inventors: Toshihiro Sato (Tokyo, JP); Hironori Toyoda (Tokyo, JP)
Assignee: Japan Display Inc.
H01L51/5246H01L27/3211H01L51/504H01L51/5256H01L51/5284H01L27/3246H01L27/3248H01L27/3258H01L27/3276H01L2251/301H01L2251/558
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Quick Facts
Patent No.
US 10,043,995
App. No.
15/881,160
Granted
Aug 7, 2018
Kind
B2
Abstract

An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.

Claims (39)

1. An organic electroluminescence display device comprising:

a substrate including a display area and a non-display area surrounding the display area;

a first electrode that is in the display area;

a first organic layer that is on the first electrode and includes a light-emitting layer;

a second electrode that is on the first organic layer;

a second organic layer that is on the second electrode;

a first inorganic layer that is on the second organic layer;

a second inorganic layer that is on the first inorganic layer and in contact with the first inorganic layer in the non-display area,

wherein the second inorganic layer covers the first organic layer and the second organic layer in plan view.

2. The organic electroluminescence display device according to claim 1 , further comprising a third inorganic layer between the second organic layer and the first inorganic layer.

3. The organic electroluminescence display device according to claim 2 , wherein the second organic layer is thicker than the third inorganic layer.

4. The organic electroluminescence display device according to claim 1 , further comprising an insulating film that is on the first electrode and covers an edge portion of the first electrode.

5. The organic electroluminescence display device according to claim 4 , wherein

a first distance and a second distance are distances between a top surface of the substrate and a top surface of the second organic layer;

the first distance is in a first area that is included the insulating film in plan view;

the second distance is in a second area that is not included the insulating film in plan view; and

the first distance is bigger than the second distance.

6. The organic electroluminescence display device according to claim 1 , wherein the second organic layer is inside the first inorganic layer and the second inorganic layer in plan view.

7. The organic electroluminescence display device according to claim 2 , wherein the third inorganic layer is conductive.

8. An organic electroluminescence display device comprising:

a substrate including a display area and a non-display area surrounding the display area;

a first electrode that is in the display area and formed in each of sub-pixels;

a first organic layer that is on the first electrode and includes a light-emitting layer;

a second electrode that is on the first organic layer;

a second organic layer that is on the second electrode;

a first inorganic layer that is on the second organic layer;

a second inorganic layer that is on the first inorganic layer and in contact with the first inorganic layer in the non-display area,

wherein the second inorganic layer covers the sub-pixels successively.

9. The organic electroluminescence display device according to claim 8 , further comprising a third inorganic layer between the second organic layer and the first inorganic layer.

10. The organic electroluminescence display device according to claim 9 , wherein the second organic layer is thicker than the third inorganic layer.

11. The organic electroluminescence display device according to claim 8 , further comprising an insulating film that is on the first electrode and covers an edge portion of the first electrode.

12. The organic electroluminescence display device according to claim 11 , wherein

a first distance and a second distance are distances between a top surface of the substrate and a top surface of the second organic layer;

the first distance is in a first area that is included the insulating film in plan view;

the second distance is in a second area that is not included the insulating film in plan view; and

the first distance is bigger than the second distance.

13. The organic electroluminescence display device according to claim 8 , wherein the second organic layer is inside the first inorganic layer and the second inorganic layer in plan view.

14. The organic electroluminescence display device according to claim 8 , wherein the first inorganic layer covers the sub-pixels successively.

15. The organic electroluminescence display device according to claim 9 , wherein the third inorganic layer is conductive.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
Priority Claims (1)
JP 2013-206170 · Oct 1, 2013 · national
Continuity (5)
Continuation 15705473 · Sep 15, 2017
Continuation 15401382 · Jan 9, 2017
Continuation 15060136 · Mar 3, 2016
Continuation 14503444 · Oct 1, 2014
Related Publication 20180166651A1 · Jun 14, 2018