IP Library Granted Patent US 7,498,737
Granted Patent B2
US 7,498,737 · App. 10/569,818 · Granted Mar 3, 2009

Method of manufacturing an organic electronic device and organic electronic device

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Quick Facts
Patent No.
US 7,498,737
App. No.
10/569,818
Granted
Mar 3, 2009
Kind
B2
Abstract

The invention discloses a method for manufacturing an organic electro-luminescent display device, the method comprising the steps of: providing a light-permeable substrate; arranging a plurality of transparent electrodes in a stripe-like manner on the light-permeable substrate, the transparent electrodes being made of a light-permeable conductive film; forming at least one organic layer on the subassembly, the at least one organic layer being made of an organic electro-luminescent medium so that the at least one organic layer covers the electrodes; forming a conductive film all over the at least one organic layer; and removing at least one portion of the conductive film so as to create stripe-like electrodes being electrical isolated to each other and extending in a direction perpendicular to the transparent electrodes using a radiation method.

Claims (34)

1. A method for manufacturing an organic electro-luminescent device, the method comprising the steps of:

providing a substrate;

arranging at least one first electrode on substrate, the first electrode being made of a first conductive film to form a subassembly;

forming a plurality of insulating ribs on the first electrode;

forming at least one organic layer on the subassembly, the at least one organic layer being made of an organic electro-luminescent medium, so that the at least one organic layer covers the first electrodes;

forming a second conductive film over the at least one organic layer; and

removing at least one portion of the second conductive film using a radiation method to create second electrodes that are electrically isolated from each other; wherein removing the at least one portion of the second conductive film includes removing a portion of the second conductive film from over the insulating ribs and removing at least a portion of the insulating ribs.

2. A method for manufacturing a display device according to claim 1 , wherein the step of arranging at least one first electrode comprises arranging a plurality of electrodes in a stripe-like manner to form lower stripe-like electrodes.

3. A method for manufacturing a display device according to claim 2 , wherein the step of removing at least one portion of the second conductive film comprises creating stripe-like electrodes extending in a direction perpendicular to the lower stripe-like electrodes.

4. A method for manufacturing a device according to claim 1 , wherein the step of removing at least one portion of the second conductive film using a radiation method comprises using a laser beam.

5. A method for manufacturing a display device according to claim 1 , wherein the step of removing at least one portion of the second conductive film using a radiation method comprises using an electron beam.

6. A method for manufacturing a device according to claim 1 , wherein the step of removing at least one portion of the second film comprises removing at least a portion of the organic layer.

7. A method for manufacturing a device according to claim 1 , wherein the step of forming a second conductive film is carried out by vacuum deposition.

8. A method for manufacturing a device according to claim 2 , wherein forming a plurality of insulating ribs includes forming the insulating ribs in a stripe-like manner on the lower stripe-like electrodes the, insulating ribs extending in a direction perpendicular to the lower stripe-like electrodes.

9. A method for manufacturing a device according to claim 1 , wherein the step of forming the plurality of ribs on the first electrode comprises arranging the plurality of ribs in laterally spaced rows parallel to each other.

10. A method for manufacturing a device according to claim 1 , wherein the step of forming the plurality of ribs on the first electrode comprises heating the ribs to cross-link the material of the ribs.

11. A method for manufacturing a device according to claim 10 , wherein the plurality of ribs are made of a photoresist and are subjected to heat of approximately 220° C.

12. A method for manufacturing a device according to claim 1 , wherein the step of forming the plurality of ribs on the first electrode comprises chamfering the edges of the ribs opposite to the first electrode.

13. A method for manufacturing a device according to claim 1 , wherein removing the at least one portion of the second conductive film comprises removing parts of the insulating rib thereby shaping the insulating rib into a “U”-shape.

14. An organic electro-luminescent device comprising:

a substrate;

at least one lower electrode arranged on the substrate and formed of a lower conductive film;

a plurality of insulating members each comprising a valley and consisting at least partially of insulating material and arranged on the lower electrode;

at least one organic layer formed of an organic electro-luminescent medium and arranged at least between two adjacent insulating members; and

upper electrodes made of a second conductive film deposited over the at least one organic layer.

15. A device according to claim 14 , wherein the lower electrode is one of a plurality of strip-like lower electrodes.

16. A device according to claim 15 , further comprising a plurality of stripe-like isolating members extending in a direction perpendicular to the lower electrodes.

17. A device according to claim 14 , wherein the insulating members form structures that comprise portions of the organic electroluminescent medium.

18. A device according to claim 14 , wherein the insulating material forms insulating ribs on the lower electrode.

19. A device according to claim 14 , wherein the insulating material forms insulating ribs on the lower electrode and the organic electro-luminescent medium is over the insulating ribs.

20. A device according to claim 14 , wherein the insulating material forms insulating ribs on the lower electrode, the organic electro-luminescent medium is over the insulating ribs and part of the second conductive film is over the organic electro-luminescent medium

21. A device according to claim 14 , wherein the insulating member is in the shape of a “U” and a base of the “U” is closer to the electrode than ends of legs of the “U”.

22. A device according to claim 21 , wherein the ends of the legs of the “U” comprise the medium of the at least one organic layer.

23. A device according to claim 21 , wherein the ends of the legs of the “U” comprise material of the second conductive film.

Assignments (3)
NUNC PRO TUNC ASSIGNMENT Recorded Feb 7, 2022
From: OSRAM OPTO SEMICONDUCTORS GMBH
To: OSRAM GMBH
Reel/Frame 058960/0821 →
CHANGE OF NAME Recorded Aug 11, 2020
From: DOLYA HOLDCO 5 LIMITED
To: PICTIVA DISPLAYS INTERNATIONAL LIMITED
Reel/Frame 053464/0327 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2020
From: OSRAM GMBH
To: DOLYA HOLDCO 5 LIMITED
Reel/Frame 053464/0330 →