Flexible display module and display device

Patent metadata

Field	Value
Publication number	US-12596404-B2
Application number	US-202318362042-A
Country	US
Kind code	B2
Filing date	Jul 31, 2023
Priority date	Dec 30, 2021
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

A flexible display module and a display device relate to the field of display, and used for displaying an image. A problem that a flexible display panel is prone to producing cracks or film layers in the flexible display panel are separated from each other when a reel rolls up the flexible display module is solved. The flexible display module includes the reel and the flexible display panel, the reel is magnetic, and the flexible display panel can be rolled up onto the reel; and the flexible display panel includes a magnetic attraction part, which is configured to be attracted by the reel when the flexible display panel is rolled up onto the reel, so that the flexible display panel fits with the reel.

First claim

What is claimed is:

1 . A flexible display module, comprising:
a magnetic reel; a flexible display panel that is rollable around the reel, wherein the flexible display panel comprises a magnetic attraction part that is configured to be attracted by the reel when the flexible display panel is rolled up onto the reel; wherein the magnetic attraction part comprises a magnetic powder and a fixing adhesive layer for fixing the magnetic powder; and the fixing adhesive layer is provided with an accommodating cavity and the magnetic powder is located in the accommodating cavity; wherein the flexible display panel further comprises a plurality of film layers in a laminated arrangement, at least one film layer comprises a receiving cavity, the receiving cavity is a receiving hole or a receiving groove, the magnetic attraction part is filled in the receiving hole or the receiving groove, and the receiving cavity comprises a first receiving cavity; wherein a top surface of the fixing adhesive layer and a side wall of the first receiving cavity enclose to form the accommodating cavity, the magnetic powder is located on the top surface of the fixing adhesive layer, and a top surface of the magnetic powder is not higher than a top surface of the first support layer.

2 . The flexible display module according to claim 1 , wherein the reel is an electromagnetic reel and, when the flexible display panel is rolled up onto the electromagnetic reel, the electromagnetic reel is magnetic when energized.

3 . The flexible display module according to claim 1 , wherein the fixing adhesive layer comprises a first adhesive layer and a second adhesive layer arranged opposite to each other, and the accommodating cavity is formed between the first adhesive layer and the second adhesive layer; and
a groove is arranged on a side of the first adhesive layer towards the second adhesive layer, and the groove is enclosed by the second adhesive layer to form the accommodating cavity.

4 . The flexible display module according to claim 1 , wherein the magnetic powder is mixed in the fixing adhesive layer.

5 . The flexible display module according to claim 1 , wherein the plurality of film layers comprises a first support layer, a second support layer, a substrate, an array film layer, a display film layer, and a packaging film layer.

6 . The flexible display module according to claim 5 , wherein a connecting adhesive layer is arranged between the magnetic attraction part and a film layer adjacent to the magnetic attraction part.

7 . The flexible display module according to claim 6 , wherein the connecting adhesive layer and the fixing adhesive layer are integrated.

8 . The flexible display module according to claim 5 , wherein the magnetic attraction part is arranged in at least one film layer of the flexible display panel.

9 . The flexible display module according to claim 8 , wherein the fixing adhesive layer is located within the receiving cavity.

10 . The flexible display module according to claim 9 , wherein at least one of film layers on a side of the array film layer away from the display film layer is provided with the first receiving cavity.

11 . The flexible display module according to claim 10 , wherein the first receiving cavity extends along an axial direction of the reel.

12 . The flexible display module according to claim 9 , wherein the receiving cavity further comprises a second receiving cavity, and a non-display area of at least one of film layers on a side of the substrate away from the second support layer is provided with the second receiving cavity.

13 . The flexible display module according to claim 12 , wherein the second receiving cavity is located on both sides of the flexible display panel along an axial direction of the reel.

14 . The flexible display module according to claim 5 , wherein the magnetic attraction part is located between any two adjacent film layers in the flexible display panel, and the fixing adhesive layer is bonded with the any two adjacent film layers.

15 . The flexible display module according to claim 5 , wherein the magnetic attraction part is located between any two adjacent film layers in the film layers on a side of the display film layer away from the packaging film layer; and/or
the magnetic attraction part is located between any two adjacent film layers in the film layers on a side of the array film layer away from the substrate.

16 . The flexible display module according to claim 15 , wherein the magnetic powder is located on both sides of the flexible display panel along an axial direction of the reel, and the fixing adhesive layer in a non-display area.

17 . A flexible display device, comprising the flexible display module according to claim 1 .

18 . The flexible display module according to claim 1 , wherein the receiving cavity comprises a plurality of first receiving holes, and the plurality of first receiving holes are all arranged in the first support layer.

19 . The flexible display module according to claim 1 , wherein the receiving cavity comprises a plurality of first receiving grooves, and the plurality of first receiving grooves are arranged in parallel and spaced apart.

Assignees

• Hefei Visionox Tech Co Ltd

Inventors

• Zheng Cai
• Xie Hongjun
• Ding Liwei

Classifications

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• H04M1/0268

  including a flexible display panel · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title