OLED with mesh metal layer in flexible substrate

Patent metadata

Field	Value
Publication number	US-12369486-B2
Application number	US-202217932888-A
Country	US
Kind code	B2
Filing date	Sep 16, 2022
Priority date	Feb 6, 2018
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

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

The invention claimed is:

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,

wherein the first metal layer comprises a first metal mesh, and the second metal layer comprises a second metal mesh,
wherein the second flexible substrate comprises a first portion parallel to the first flexible substrate and a second portion extending from the first portion towards the first flexible substrate, the second portion is arranged along an edge of the first flexible substrate and directly contacts the first flexible substrate, such that an entirety of the first metal mesh is within a space enclosed by the first portion, the second portion and the first flexible substrate, and an orthographic projection of the first metal mesh on the first flexible substrate is surrounded by an orthographic projection of the second portion of the second flexible substrate on the first flexible substrate, and
wherein the second packaging barrier layer comprises a third portion parallel to the first flexible substrate and a fourth portion extending from the third portion towards the first packaging barrier layer, the fourth portion is arranged along an edge of the first packaging barrier layer and directly contacts the first packaging barrier layer, such that an entirety of the second metal mesh is within a space enclosed by the third portion, the fourth portion and the first packaging barrier layer, and an orthographic projection of the second metal mesh on the first packaging barrier layer is surrounded by an orthographic projection of the fourth portion of the second packaging barrier layer on the first packaging barrier 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 7 , wherein a material of the buffer layer comprises a transparent conductive resin.

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

10. The flexible display panel according to 9 , 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 Al2O3, TiO2, ZrO2, MgO, HFO2, Ta2O5, Si3N4, AlN, SiN, SiNO, SiO, SiO2, SiC, SiCNx, ITO and IZO.

11. 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.

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

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

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

Assignees

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

Inventors

• Li Fashun

Classifications

• H10K50/844

  Encapsulations · CPC title

• H10K59/8731

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

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K71/00

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

• Y02P70/50

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