IP Library › Granted Patent US 8,809,879
Granted Patent B2
US 8,809,879 · App. 13/439,237 · Granted Aug 19, 2014

Light-emitting device and a method of manufacturing light-emitting device

Inventors: Kensuke Yoshizumi (Kanagawa, JP); Koji Ono (Tochigi, JP)
Assignee: Semiconductor Energy Laboratory Co., Ltd.
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Quick Facts
Patent No.
US 8,809,879
App. No.
13/439,237
Granted
Aug 19, 2014
Kind
B2
Abstract

To provide a highly reliable light-emitting device and especially a light-emitting device which can be formed without use of a metal mask and includes a plurality of light-emitting elements. A structural body at least an end of which has an acute-angled shape is provided so that the end can pass downward through an electrically conductive film formed over the insulating layer and can be at least in contact with an insulating layer having elasticity, thereby physically separating the electrically conductive film, and the electrically conductive films are thus electrically insulated from each other. Such a structure may be provided between adjacent light-emitting elements so that the light-emitting elements can be electrically insulated from each other in the light-emitting device.

Claims (41)

1. A light-emitting device comprising:

a first light-emitting element including a first lower electrode layer, a first upper electrode layer over the first lower electrode layer, and a first layer including a light-emitting organic compound interposed between the first lower electrode layer and the first upper electrode layer;

a second light-emitting element being adjacent to the first light-emitting element and including a second lower electrode layer, a second upper electrode layer over the second lower electrode layer, and a second layer including a light-emitting organic compound interposed between the second lower electrode layer and the second upper electrode layer;

an insulating layer including a depression, the depression being between the first light-emitting element and the second light-emitting element; and

a structural body,

wherein the insulating layer covers at least an edge portion of the first lower electrode layer and an edge portion of the second lower electrode layer,

wherein an end of the structural body is stuck in the insulating layer, and

wherein the first upper electrode layer is formed in a same layer as the second upper electrode layer and is separated over the depression of the insulating layer from the second upper electrode layer.

2. The light-emitting device according to claim 1 ,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer are provided over a first substrate,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer face a second substrate, and

wherein a sealing material is provided between the second substrate and the first light-emitting element and between the second substrate and the second light-emitting element.

3. The light-emitting device according to claim 1 ,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer are provided over a first substrate,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer face a second substrate, and

wherein a space is formed between the second substrate and the first light-emitting element and between the second substrate and the second light-emitting element.

4. The light-emitting device according to claim 1 , wherein a side surface of the first upper electrode layer is aligned with a side surface of the first layer.

5. The light-emitting device according to claim 4 , wherein the side surface of the first upper electrode layer and the side surface of the first layer are aligned with part of an exposed surface of the depression.

6. The light-emitting device according to claim 1 , wherein the insulating layer comprises a material selected from the group consisting of polyimide, acrylic, polyamide, and epoxy.

7. The light-emitting device according to claim 1 , wherein the first lower electrode layer is configured to transmit light from the first layer.

8. The light-emitting device according to claim 1 , wherein the first upper electrode layer is configured to transmit light from the first layer.

9. A light-emitting device comprising:

a first light-emitting element including a first lower electrode layer, a first upper electrode layer over the first lower electrode layer, and a first layer including a light-emitting organic compound interposed between the first lower electrode layer and the first upper electrode layer;

a second light-emitting element being adjacent to the first light-emitting element and including a second lower electrode layer, a second upper electrode layer over the second lower electrode layer, and a second layer including a light-emitting organic compound interposed between the second lower electrode layer and the second upper electrode layer;

an insulating layer including a depression, the depression being between the first light-emitting element and the second light-emitting element; and

a structural body,

wherein at least an end of the structural body has an acute-angled shape,

wherein the insulating layer covers at least an edge portion of the first lower electrode layer and an edge portion of the second lower electrode layer,

wherein the end of the structural body is stuck in the insulating layer, and

wherein the first upper electrode layer is formed in a same layer as the second upper electrode layer and is separated over the depression of the insulating layer from the second upper electrode layer by the structural body.

10. The light-emitting device according to claim 9 ,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer are provided over a first substrate,

wherein the first light-emitting element, the second light-emitting element, and the insulating layer face a second substrate, and

wherein a space is formed between the second substrate and the first light-emitting element and between the second substrate and the second light-emitting element.

11. The light-emitting device according to claim 10 , wherein the structural body is provided over the second substrate.

12. The light-emitting device according to claim 9 , wherein a side surface of the first upper electrode layer is aligned with a side surface of the first layer.

13. The light-emitting device according to claim 12 , wherein the side surface of the first upper electrode layer and the side surface of the first layer are aligned with part of an exposed surface of the depression.

14. The light-emitting device according to claim 9 , wherein the end of the structural body is in contact with the insulating layer at the depression.

15. The light-emitting device according to claim 9 , wherein the insulating layer comprises a material selected from the group consisting of polyimide, acrylic, polyamide, and epoxy.

16. The light-emitting device according to claim 9 , wherein the first lower electrode layer is configured to transmit light from the first layer.

17. The light-emitting device according to claim 9 , wherein the first upper electrode layer is configured to transmit light from the first layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 5, 2012
From: YOSHIZUMI, KENSUKE; ONO, KOJI
To: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Reel/Frame 027993/0573 →
Priority Claims (1)
JP 2011-085581 · Apr 7, 2011 · national
Continuity (1)
Related Publication 20120256204A1 · Oct 11, 2012