Flexible organic light-emitting display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11244993-B2
Application number	US-202016891783-A
Country	US
Kind code	B2
Filing date	Jun 3, 2020
Priority date	Dec 5, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Provided are a flexible organic light-emitting display device and a method of manufacturing the same. The flexible organic light-emitting display device includes a metal oxide infiltrated layer as part of at least one of a plurality of organic layers stacked on and around an organic light-emitting device.

First claim

What is claimed is:

1. A display device, comprising:
an organic light-emitting device;
a plurality of organic layers stacked on the organic light-emitting device, the plurality of organic layers comprising an organic insulating material; and
a metal oxide infiltrated layer which is a part of at least one target organic layer selected from the plurality of organic layers, the metal oxide infiltrated layer including a metal oxide diffused and infiltrated into an exposed surface of the at least one target organic layer according to a sequential vapor deposition method,
wherein the plurality of organic layers comprise:
a base organic layer serving as a substrate,
an insulation organic layer of a thin film transistor that is connected to the organic light-emitting device, and
an encapsulation organic layer on a second side of the organic light-emitting device, which is opposite to a first side of the organic light-emitting device where the base organic layer is located,

wherein the encapsulation organic layer covers the organic light-emitting device,
wherein the thin film transistor comprises:
an active layer disposed on the base organic layer,
a gate insulating layer covering the active layer,
a gate electrode disposed on the gate insulating layer and facing the active layer,
an interlayer insulating layer covering the gate electrode,
a source electrode and a drain electrode disposed on the interlayer insulating layer to be respectively connected to different portions of the active layer, and
a via layer covering the source electrode and the drain electrode, and

wherein the insulation organic layer comprises the gate insulating layer, the interlayer insulating layer, and the via layer.

2. The display device of claim 1 , wherein the metal oxide infiltrated layer is a part of the base organic layer.

3. The display device of claim 2 , wherein the metal oxide infiltrated layer is a part of a surface of the base organic layer that faces the organic light-emitting device.

4. The display device of claim 2 , wherein the metal oxide infiltrated layer is a part of a second surface of the base organic layer, which is opposite from a first surface of the base organic layer facing the organic light-emitting device.

5. The display device of claim 1 , wherein the metal oxide infiltrated layer is a part of the via layer.

6. The display device of claim 1 , wherein the metal oxide infiltrated layer is a part of the interlayer insulating layer.

7. The display device of claim 1 , wherein the metal oxide infiltrated layer is a part of the encapsulation organic layer.

8. The display device of claim 1 , further comprising a protection organic layer on an outer surface of the base organic layer, wherein the metal oxide infiltrated layer is a part of the protection organic layer.

9. The display device of claim 1 , further comprising a window organic layer on the encapsulation organic layer,
wherein the metal oxide infiltrated layer is a part of the window organic layer.

10. A method of manufacturing a display device, the method comprising:
stacking a plurality of organic layers on an organic light-emitting device, the plurality of organic layers comprising an organic insulating material; and
forming a metal oxide infiltrated layer as a part of a surface of at least one target organic layer selected from the plurality of organic layers utilizing a sequential vapor deposition method, the metal oxide diffused and infiltrated into an exposed surface of the at least one target organic layer according to the sequential vapor deposition method,
wherein stacking the plurality of organic layers comprises:
providing a base organic layer serving as a substrate,
forming an insulation organic layer of a thin film transistor that is formed to be connected to the organic light-emitting device,
forming an encapsulation organic layer on a side opposite to a side where the base organic layer is located, and
forming a protection organic layer on an outer surface of the base organic layer that is opposite the insulation organic layer,

wherein the encapsulation organic layer covers the organic light-emitting device,
wherein forming the thin film transistor comprises:
disposing an active layer on the base organic layer,
forming a gate insulating layer to cover the active layer,
disposing a gate electrode on the gate insulating layer and facing the active layer,
forming an interlayer insulating layer to cover the gate electrode,
disposing a source electrode and a drain electrode on the interlayer insulating layer to be respectively connected to different portions of the active layer, and
forming a via layer to cover the source electrode and the drain electrode, and

wherein the insulation organic layer comprises the gate insulating layer, the interlayer insulating layer, and the via layer.

11. The method of claim 10 , wherein the metal oxide infiltrated layer is formed on a surface of the base organic layer that faces the organic light-emitting device.

12. The method of claim 10 , wherein the metal oxide infiltrated layer is formed as a part of a first surface of the based organic layer, which is opposite from a second surface of the base organic layer facing the organic light-emitting device.

13. The method of claim 10 ,
wherein the metal oxide infiltrated layer is formed as a part of the via layer.

14. The method of claim 10 ,
wherein the metal oxide infiltrated layer is formed as a part of the interlayer insulating layer.

15. The method of claim 10 , wherein the metal oxide infiltrated layer is formed as a part of the encapsulation organic layer.

16. The method of claim 10 ,
wherein the metal oxide infiltrated layer is formed as a part of the protection organic layer.

17. The method of claim 10 , further comprising forming a window organic layer on the encapsulation organic layer, wherein the metal oxide infiltrated layer is formed as part of the window organic layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Chang Moonwon
• Kim Seunghun
• Sung Wooyong
• Song Seungyong

Classifications

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K50/8445 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title