Organic light-emitting device (OLED) display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9252395-B2
Application number	US-201414490487-A
Country	US
Kind code	B2
Filing date	Sep 18, 2014
Priority date	May 23, 2014
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

An organic light-emitting device (OLED) display is disclosed. In one aspect, the display includes a substrate, a plurality of first electrodes separated from each other over the substrate and a second electrode facing and formed across the first electrodes. The display also includes an intermediate layer interposed between the first electrodes and the second electrode, wherein the intermediate layer comprises an emission layer. The display further includes a plurality of encapsulation layer portions patterned to be separated from each other in an island form over the second electrode.

First claim

What is claimed is:

1. An organic light-emitting device (OLED) display comprising:
a substrate;
a plurality of first electrodes separated from each other over the substrate;
a single second electrode facing and formed across the plurality of first electrodes without discontinuity;
an intermediate layer interposed between the first electrodes and the second electrode, wherein the intermediate layer comprises a plurality of emission layers respectively disposed over the first electrodes; and
a plurality of encapsulation layer portions patterned to be separated from each other in an island form over the second electrode, wherein each of the encapsulation layer portions comprises an inorganic layer and an organic layer that is on the inorganic layer, the organic layer being in direct contact with a layer which is below the inorganic layer and is in direct contact with the inorganic layer.

2. The OLED display of claim 1 , wherein the substrate comprises a flexible substrate.

3. The OLED display of claim 1 , wherein each of the encapsulation layer portions comprises one or more inorganic layers.

4. The OLED display of claim 1 , wherein the inorganic layer is thicker than the organic layer.

5. The OLED display of claim 1 , wherein the encapsulation layer portions comprise an innermost layer that contacts the second electrode, and wherein the inorganic layers comprise the inner most layer.

6. The OLED display of claim 1 , further comprising an organic encapsulation layer that covers the encapsulation layer portions.

7. The OLED display of claim 6 , wherein the organic encapsulation layer is formed of one or more materials selected from the group consisting of polyethyleneterephthalate, polyethylenenaphthalate, polycarbonate, polyimide, polyethylenesulfonate, polyoxymethylene, and polyarylate.

8. The OLED display of claim 1 , wherein the encapsulation layer portions spatially correspond to the first electrodes.

9. The OLED display of claim 1 , wherein each of the encapsulation layer portions corresponds to a thin film transistor electrically connected to the first electrodes.

10. The OLED display of claim 9 , wherein the encapsulation layer portions are respectively formed directly above the thin film transistors.

11. A method of manufacturing an organic light-emitting device (OLED) display, the method comprising:
forming a plurality of first electrodes to be separated from each other over a substrate;
forming an intermediate layer including a plurality of emission layers respectively disposed over the first electrodes;
forming a single second electrode over the intermediate layer without discontinuity to face and to be across the plurality of first electrodes; and
forming a plurality of encapsulation layer portions that are patterned to be separated from each other in an island form over the second electrode, wherein each of the encapsulation layer portions comprises an inorganic layer and an organic layer that is on the inorganic layer, the organic layer being in direct contact with a layer which is below the inorganic layer and is in direct contact with the inorganic layer.

12. The method of claim 11 , wherein each of the encapsulation layer portions respectively comprises one or more inorganic layers.

13. The method of claim 11 , further comprising forming an organic encapsulation layer that covers the encapsulation layer portions.

14. The method of claim 11 , wherein the encapsulation layer portions spatially respectively correspond to the first electrodes.

15. An organic light-emitting device (OLED) display comprising:
a substrate;
a plurality of first electrodes separated from each other over the substrate;
a single second electrode facing and formed across the plurality of first electrodes without discontinuity;
an intermediate layer interposed between the first electrodes and the second electrode, wherein the intermediate layer comprises a plurality of emission layers respectively disposed over the first electrodes; and
a plurality of encapsulation layer portions formed over the second electrode and separated from each other, wherein each of the encapsulation layer portions comprises an inorganic layer and an organic layer that is on the inorganic layer, the organic layer being in direct contact with a layer which is below the inorganic layer and is in direct contact with the inorganic layer.

16. The OLED display of claim 15 , wherein the inorganic layer is thicker than the organic layer.

17. The OLED display of claim 15 , wherein the encapsulation layer portions comprise an innermost layer that contacts the second electrode, and wherein the inorganic layers comprise the inner most layer.

18. The OLED display of claim 1 , wherein the second electrode has first and second surfaces opposing each other, wherein the second surface faces the first electrodes, and wherein each of the encapsulation layer portions is formed only on the first surface of the second electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Oh Young-Eun

Classifications

• H10K71/60

  Forming conductive regions or layers, e.g. electrodes · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/805

  Electrodes · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title