IP Library Granted Patent US 7,906,899
Granted Patent B2
US 7,906,899 · App. 12/033,206 · Granted Mar 15, 2011

Organic EL device, line head, and electronic apparatus with light shield

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Quick Facts
Patent No.
US 7,906,899
App. No.
12/033,206
Granted
Mar 15, 2011
Kind
B2
Abstract

A top emission-type organic EL device includes a first electrode formed on a substrate, an organic function layer formed on the first electrode, and a second electrode formed on the organic function layer, wherein light generated from the organic function layer is extracted from the second electrode side, and wherein a light shielding layer covering a part of the second electrode is formed on the second electrode.

Claims (26)

1. A top emission-type organic EL device comprising: a first electrode formed on a substrate; an organic function layer formed on the first electrode; and a second electrode formed on the organic function layer, wherein light generated from the organic function layer is extracted from the second electrode side, wherein a light shielding layer directly covering only a peripheral portion of the second electrode is formed on the second electrode, wherein the first electrode is partitioned on the substrate by a partition wall having an opening part on the first electrode, and wherein the partition wall includes a first partition wall and a second partition wall, and the first partition wall is formed to cover a portion of a top surface of the first electrode.

2. The organic EL device according to claim 1 , wherein the light shielding layer includes an opening part, which has a shape similar to that of the second electrode, on the second electrode.

3. The organic EL device according to claim 2 ,

wherein the light shielding layer includes an opening part, which has a shape similar to that of the opening part of the partition wall, on the second electrode.

4. The organic EL device according to claim 2 , wherein the opening part of the light shielding layer is formed within a plane area of the first electrode.

5. The organic EL device according to claim 3 , wherein the center of the opening part of the light shielding layer is disposed to coincide with the center of the second electrode or the center of the opening part of the partition wall.

6. The organic EL device according to claim 2 , wherein the opening part of the light shielding layer has an approximately circular shape in a plan view.

7. A top emission-type organic EL device comprising: a first electrode formed on a substrate; an organic function layer formed on the first electrode; a second electrode formed on the organic function layer; and an auxiliary electrode formed on the second electrode so as to be brought into contact with the second electrode, wherein light generated from the organic function layer is extracted from the second electrode side, wherein the auxiliary electrode directly covers only a peripheral portion of the second electrode so as to partially shield light emitted from the organic function layer, wherein the first electrode is partitioned on the substrate by a partition wall having an opening part on the first electrode, and wherein the partition wall includes a first partition wall and a second partition wall, and the first partition wall is formed to cover a portion of a top surface of the first electrode.

8. The organic EL device according to claim 7 , wherein the auxiliary electrode includes an opening part, which has a shape similar to that of the second electrode, on the second electrode.

9. The organic EL device according to claim 8 ,

wherein the auxiliary electrode includes an opening part, which has a shape similar to that of the opening part of the partition wall, on the second electrode.

10. The organic EL device according to claim 8 , wherein the opening part of the auxiliary electrode is formed within a plane area of the first electrode.

11. The organic EL device according to claim 9 , wherein the center of the opening part of the auxiliary electrode is disposed to coincide with the center of the second electrode or the center of the opening part of the partition wall.

12. The organic EL device according to claim 8 , wherein the opening part of the auxiliary electrode has an approximately circular shape in a plan view.

13. The organic EL device according to claim 1 , wherein the light shielding layer has a light reflecting property.

14. A line head comprising the organic EL device according to claim 1 .

15. An electronic apparatus comprising the organic EL device according to claim 1 .

16. The organic EL device according to claim 7 , wherein the auxiliary electrode has a light reflecting property.

17. The organic EL device according to claim 1 , further comprising:

a second electrode contact wiring, formed outside of the first partition wall, for supplying a predetermined electric potential to the second electrode,

wherein the light shielding layer is electrically contacted to the second electrode contact wiring.

18. The organic EL device according to claim 7 , further comprising:

a second electrode contact wiring, formed outside of the first partition wall, for supplying a predetermined electric potential to the second electrode,

wherein the auxiliary electrode is electrically contacted to the second electrode contact wiring.

19. The top emission-type organic EL device according to claim 1 , wherein the light shielding layer forms a single opening in a central region of a light emitting area.

20. The top emission-type organic EL device according to claim 7 , wherein the auxiliary electrode forms a single opening in a central region of a light emitting area.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2022
From: EL TECHNOLOGY FUSION GODO KAISHA
To: ELEMENT CAPITAL COMMERCIAL COMPANY PTE. LTD.
Reel/Frame 059435/0428 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2018
From: SEIKO EPSON CORPORATION
To: EL TECHNOLOGY FUSION GODO KAISHA
Reel/Frame 047998/0879 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 19, 2008
From: UCHIDA, MASAHIRO
To: SEIKO EPSON CORPORATION
Reel/Frame 020531/0151 →