IP Library Granted Patent US 7,947,973
Granted Patent B2
US 7,947,973 · App. 11/729,840 · Granted May 24, 2011

Organic light-emitting device

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Quick Facts
Patent No.
US 7,947,973
App. No.
11/729,840
Granted
May 24, 2011
Kind
B2
Abstract

An organic light-emitting device, including a substrate, an organic light-emitting element on the substrate, a sealing member on the organic light-emitting element, a ¼ wavelength layer on one surface of the substrate, the organic light-emitting element, or the sealing member, and a linear polarization layer on one surface of the substrate, the organic light-emitting element, the sealing member, or the ¼ wavelength layer, the linear polarization layer being closer to an image display surface than the ¼ wavelength layer.

Claims (45)

1. An organic light-emitting device, comprising:

a substrate;

an organic light-emitting element on the substrate;

a sealing member on the organic light-emitting element;

a ¼ wavelength layer on the substrate; and

a linear polarization layer having a plurality of wire grids spaced apart from each other on the substrate, at least one of the ¼ wavelength layer and the linear polarization layer being positioned between the sealing member and the substrate, and the linear polarization layer being closer to an image display surface than the ¼ wavelength layer.

2. The organic light-emitting device as claimed in claim 1 , wherein the image display surface is a surface of the substrate.

3. The organic light-emitting device as claimed in claim 2 , wherein the linear polarization layer is on the substrate, the ¼ wavelength layer is on the linear polarization layer, and the organic light-emitting element is on the ¼ wavelength layer.

4. The organic light-emitting device as claimed in claim 2 , wherein the ¼ wavelength layer is on a surface of the substrate, the organic light-emitting element is on the ¼ wavelength layer, and the linear polarization layer is on a surface of the substrate opposite to the ¼ wavelength layer.

5. The organic light-emitting device as claimed in claim 2 , wherein at least one of the ¼ wavelength layer and the linear polarization layer is between the substrate and the organic light-emitting element.

6. The organic light-emitting device as claimed in claim 1 , wherein the image display surface is a surface of the sealing member.

7. The organic light-emitting device as claimed in claim 6 , wherein the ¼ wavelength layer is on the organic light-emitting element, and the linear polarization layer is on the ¼ wavelength layer.

8. The organic light-emitting device as claimed in claim 7 , further comprising a protective layer on the linear polarization layer.

9. The organic light-emitting device as claimed in claim 6 , further comprising a protective layer on the organic light-emitting element,

wherein the ¼ wavelength layer is on the protective layer and the linear polarization layer is on the ¼ wavelength layer.

10. The organic light-emitting device as claimed in claim 6 , further comprising a protective layer on the organic light-emitting element,

wherein the ¼ wavelength layer is formed between the organic light-emitting element and the protective layer, and the linear polarization layer is on the protective layer.

11. The organic light-emitting device as claimed in claim 8 , wherein the protective layer comprises at least one of an organic insulating material or an inorganic insulating material.

12. The organic light-emitting device as claimed in claim 6 , further comprising a reflective layer interposed between the substrate and the organic light-emitting element,

wherein the ¼ wavelength layer is between the reflective layer and the organic light-emitting element, and the linear polarization layer is on the organic light-emitting element.

13. The organic light-emitting device as claimed in claim 6 , wherein the sealing member is a transparent substrate, and the ¼ wavelength layer and the linear polarization layer are between the sealing member and the organic light-emitting element.

14. The organic light-emitting device as claimed in claim 6 , wherein the sealing member is a transparent substrate, the ¼ wavelength layer is on a surface of the sealing member facing the organic light-emitting element, and the linear polarization layer is on an opposite surface of the sealing member to the ¼ wavelength layer.

15. The organic light-emitting device as claimed in claim 6 , wherein the sealing member is a transparent substrate, the linear polarization layer is on a surface of the sealing member facing the organic light-emitting element, and the ¼ wavelength layer is on a surface of the linear polarization layer facing the organic light-emitting element.

16. The organic light-emitting device as claimed in claim 1 , further comprising:

a thin film transistor on the substrate, the organic light-emitting element being electrically connected to the thin film transistor.

17. The organic light-emitting device as claimed in claim 16 , wherein the image display surface is a surface of the substrate, and further comprises at least one of:

a) wherein the linear polarization layer is on the substrate, the ¼ wavelength layer is on the linear polarization layer, and the thin film transistor and the organic light-emitting element are on the ¼ wavelength layer;

b) wherein the linear polarization layer is on the thin film transistor, and the ¼ wavelength layer is on the linear polarization layer;

c) wherein the organic light-emitting device further comprises a protective layer covering the thin film transistor, and the linear polarization layer is on the protective layer, and the ¼ wavelength layer is on the linear polarization layer;

d) wherein the linear polarization layer is on the substrate, the thin film transistor is on the linear polarization layer, and the ¼ wavelength layer is on the thin film transistor;

e) wherein at least one of the linear polarization layer and the ¼ wavelength layer is interposed between layers constituting the thin film transistor;

f) wherein the linear polarization layer is on an opposite surface of the substrate to the thin film transistor, and the ¼ wavelength layer is on the thin film transistor;

g) wherein the ¼ wavelength layer is on a surface of the substrate, the thin film transistor is on the ¼ wavelength layer, and the linear polarization layer is on a surface of the substrate opposite to the ¼ wavelength layer; or

h) wherein the ¼ wavelength layer and the linear polarization layer are sequentially on a surface of the substrate opposite to the organic light-emitting element.

18. The organic light-emitting device as claimed in claim 16 , wherein the image display surface is a surface of the sealing member, and further comprises at least one of:

a) wherein the ¼ wavelength layer is on the organic light-emitting element, and the linear polarization layer is on the ¼ wavelength layer;

b) wherein the organic light emitting device further comprises a protective layer on the linear polarization layer, the protective layer being formed from inorganic or organic insulating material;

c) wherein organic light emitting device further comprises a protective layer on the organic light-emitting element, the ¼ wavelength layer is on the protective layer, and the linear polarization layer is on the ¼ wavelength layer;

d) wherein organic light emitting device further comprises a protective layer on the organic light-emitting element, the ¼ wavelength layer is between the organic light-emitting element and the protective layer, and the linear polarization layer is on the protective layer;

e) wherein organic light emitting device further comprises a reflective layer interposed between the substrate and the organic light-emitting element, and the ¼ wavelength layer is between the reflective layer and the organic light-emitting element, and the linear polarization layer is on the organic light-emitting element;

f) wherein the sealing member is a transparent substrate, the ¼ wavelength layer is on a surface of the sealing member opposite to the organic light-emitting element, and the linear polarization layer is on the ¼ wavelength layer;

g) wherein the sealing member is a transparent substrate, the ¼ wavelength layer is on a surface of the sealing member facing the organic light-emitting element, and the linear polarization layer is on a opposite surface of the sealing member opposite to the ¼ wavelength layer; or

h) wherein the sealing member is a transparent substrate, the linear polarization layer is on a surface of the sealing member facing the organic light-emitting element, and the ¼ wavelength layer is on a surface of the linear polarization layer facing the organic light-emitting element.

19. The organic light-emitting device as claimed in claim 16 , wherein the organic light emitting device is a front emission active matrix organic light-emitting device.

20. The organic light-emitting device as claimed in claim 1 , wherein at least one of the ¼ wavelength layer and the linear polarization layer is between the organic light emitting element and the substrate.

Assignments (3)
MERGER Recorded Sep 11, 2012
From: SAMSUNG MOBILE DISPLAY CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 029096/0174 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 15, 2008
From: SAMSUNG SDI CO., LTD.
To: SAMSUNG MOBILE DISPLAY CO., LTD.
Reel/Frame 021998/0771 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2007
From: SONG, YOUNG-WOO; LEE, JONG-HYUK; KIM, WON-JONG; CHO, YOON-HYEUNG; LEE, JOON-GU; HA, JAE-HEUNG
To: SAMSUNG SDI CO., LTD.
Reel/Frame 019195/0462 →