Packaging structure of electroluminescent element, method for manufacturing the same, display device

Patent metadata

Field	Value
Publication number	US-2023008515-A1
Application number	US-202217932888-A
Country	US
Kind code	A1
Filing date	Sep 16, 2022
Priority date	Feb 6, 2018
Publication date	Jan 12, 2023
Grant date	—

Abstract

A flexible display panel, a display device, and a manufacturing method for the flexible display panel are provided. The flexible display panel includes a first flexible substrate, a first metal layer on the first flexible substrate, and a second flexible substrate on the first metal layer. The flexible display panel further includes a first packaging barrier layer on the electroluminescent element, a second metal layer on the first packaging barrier layer, and a second packaging barrier layer on the second metal layer. The bendability and the flexibility of the proposed packaging structure of an electroluminescent element are significantly enhanced, which helps to improve the flexibility and the bendability of a display device to which the packaging structure of an electroluminescent element is applied.

First claim

1 . A flexible display panel comprising an electroluminescent element, the flexible display panel comprising:
a first flexible substrate; a first metal layer on the first flexible substrate; and a second flexible substrate on the first metal layer, wherein the flexible display panel further comprises:
a first packaging barrier layer on the electroluminescent element;
a second metal layer on the first packaging barrier layer; and
a second packaging barrier layer on the second metal layer.

2 . The flexible display panel according to claim 1 ,
wherein the first metal layer is between the first flexible substrate and the second flexible substrate.

3 . The flexible display panel according to claim 2 ,
wherein an orthographic projection of the second flexible substrate on the first flexible substrate coincides with the first flexible substrate and overlaps an orthographic projection of the first metal layer on the first flexible substrate.

4 . The flexible display panel according to claim 1 ,
wherein a material of the first metal layer comprises platinum, platinum-gold alloy or aluminum.

5 . The flexible display panel according to claim 1 ,
wherein the second metal layer is between the first packaging barrier layer and the second packaging barrier layer.

6 . The flexible display panel according to claim 5 ,
wherein an orthographic projection of the second packaging barrier layer on the first packaging barrier layer coincides with the first packaging barrier layer and overlaps an orthographic projection of the second metal layer on the first packaging barrier layer.

7 . The flexible display panel according to claim 5 ,
wherein the flexible display panel further comprises a buffer layer on the second packaging barrier layer.

8 . The flexible display panel according to claim 7 ,
wherein the flexible display panel further comprises a third packaging barrier layer on the buffer layer.

9 . The flexible display panel according to claim 1 ,
wherein a packaging structure of the flexible display panel comprises a driving circuit layer between the second flexible substrate and the electroluminescent element.

10 . The flexible display panel according to claim 1 ,
wherein the electroluminescent element comprises an organic light emitting diode.

11 . The flexible display panel according to claim 1 ,
wherein the first metal layer comprises a first metal mesh, and the second metal layer comprises a second metal mesh.

12 . The flexible display panel according to claim 1 ,
wherein the electroluminescent element is on the second flexible substrate.

13 . The flexible display panel according to 8 , wherein a material of the first packaging barrier layer, the second packaging barrier layer or the third packaging barrier layer comprises as least one selected from a group comprising Al 2 O 3 , TiO 2 , ZrO 2 , MgO, HFO 2 , Ta 2 O 5 , Si 3 N 4 , AlN, SiN, SiNO, SiO, SiO 2 , SiC, SiCN x , ITO and IZO.

14 . The flexible display panel according to 7 , wherein a material of the buffer layer comprises a transparent conductive resin.

15 . A display device comprising the flexible display panel according to claim 1 .

16 . A manufacturing method for a packaging structure of the electroluminescent element according to claim 1 , comprising:
forming the first flexible substrate; forming the first metal layer on the first flexible substrate; forming the second flexible substrate on the first metal layer; and forming the electroluminescent element on the second flexible substrate.

17 . The manufacturing method according to claim 16 , further comprising:
forming a first packaging barrier layer on the electroluminescent element; forming a second metal layer on the first packaging barrier layer; and forming a second packaging barrier layer on the second metal layer.

18 . The manufacturing method according to claim 17 , further comprising:
forming a buffer layer on the second packaging barrier layer; and forming a third packaging barrier layer on the buffer layer.

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Fashun

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/5253

  Electricity · mapped topic

• H01L51/0097 Primary

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic