Laminating device and laminating method of display substrate

Patent metadata

Field	Value
Publication number	US-11938707-B2
Application number	US-202017414920-A
Country	US
Kind code	B2
Filing date	Dec 30, 2020
Priority date	Mar 24, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A laminating device includes: a plate being bendable, having a resilience characteristic and for bearing the flexible substrate; a supporting base platform for supporting the plate and driving the plate and the flexible substrate on the plate to move; a bending assembly for applying stress to drive the plate and the flexible substrate on the plate to be bent towards a side, facing away from the flexible substrate, of the plate, and for releasing stress to allow the plate and the flexible substrate to rebound; and a fixing fixture for fixing the protective cover plate. The protective cover plate is used to be laminated to the flexible substrate, a shape of the fixing fixture is same as or similar to that of the protective cover plate, the fixing fixture is bent to form an accommodating space, and the protective cover plate is fixed in the accommodating space.

First claim

What is claimed is:

1. A laminating device, comprising:
a plate, which is bendable, has a resilience characteristic, and is configured for bearing a flexible substrate;
a supporting base platform, for supporting the plate and driving the plate and the flexible substrate on the plate to move;
a bending assembly, for applying stress so as to drive the plate and the flexible substrate on the plate to be bent towards a side of the plate facing away from the flexible substrate, and for releasing stress so as to allow the plate and the flexible substrate to rebound; and
a fixing fixture, for fixing a protective cover plate, wherein the protective cover plate is for being laminated to the flexible substrate; a shape of the fixing fixture is same as or similar to a shape of the protective cover plate; the fixing fixture is bent to form an accommodating space; and the protective cover plate is fixed in the accommodating space;
wherein the bending assembly comprises:
a bearing membrane, configured to be laminated on a surface of a side of the flexible substrate facing the plate, to be disposed on the plate together with the flexible substrate and to drive the flexible substrate and the plate to be bent; and
a drive component, configured to be used in cooperation with the bearing membrane, and to drive the bearing membrane to be bent by stretching the bearing membrane.

2. The laminating device according to claim 1 , wherein the bearing membrane comprises a stretching part exceeding an edge of the flexible substrate; and
the drive component comprises a jig and a roller shaft, the jig is used to clamp an edge of the stretching part and apply a pulling force to the stretching part, and the roller shaft is used to support the stretching part and change a direction of the pulling force of the stretching part.

3. The laminating device according to claim 2 , wherein the bending assembly further comprises:
a plate resilience assisting rod, connected with an edge of the plate, and configured to apply stress so as to drive the plate to be bent and release stress so as to allow the plate to rebound.

4. The laminating device according to claim 1 , wherein the plate comprises a stainless steel layer and a buffer layer, and a surface of the buffer layer is configured as a bearing surface.

5. The laminating device according to claim 4 , wherein the stainless steel layer has a tensile strength of more than 1500 MPa, a hardness of more than 530 HV, and a thickness of 0.1 mm-0.2 mm.

6. The laminating device according to claim 4 , wherein the buffer layer is a silica gel material layer, and has a hardness of 20-60 Shore A.

7. The laminating device according to claim 6 , wherein the stainless steel layer and the buffer layer are compounded and integrated through a silica gel injection molding process; and the supporting base platform is a rigid base platform and welded to the stainless steel layer.

8. The laminating device according to claim 1 , wherein the plate is configured to be magnetic; and
the fixing fixture is configured to be magnetic and adjustable in magnetism.

9. The laminating device according to claim 8 , wherein the fixing fixture comprises a base material and a magnetic layer disposed in the base material; and the magnetic layer is configured to be adjustable in magnetism through an electric signal.

10. The laminating device according to claim 1 , wherein the protective cover plate comprises a main part and two bent parts at two ends of the main part;
the fixing fixture comprises a first part and two second parts at two ends of the first part; a shape of the first part is same as or similar to a shape of the main part of the protective cover plate, and shapes of the two second parts are same as or similar to shapes of the two bent parts of the protective cover plate respectively; and the first part is respectively detachably connected with the two second parts.

11. The laminating device according to claim 10 , wherein the main part comprises a panel region and two ¼ arc bent regions at two ends of the panel region respectively; and each bent part comprises a ¼ arc bent region, and the ¼ arc bent region of each bent part is connected with a respective one of the two ¼ arc bent regions of the main part to form a 180° bend between the main part and the bent part.

12. A laminating method of a display substrate, adopting the laminating device according to claim 1 for laminating, and comprising:
placing the flexible substrate on the plate;
fixing the protective cover plate in the accommodating space formed by the fixing fixture;
applying stress through the bending assembly to drive the plate and the flexible substrate on the plate to be bent towards the side of the plate facing away from the flexible substrate;
driving the plate and the flexible substrate to enter the accommodating space formed by the fixing fixture;
releasing stress through the bending assembly to allow the plate and the flexible substrate to rebound, so as to realize lamination of the flexible substrate and the protective cover plate; and
driving the plate to move out of the accommodating space.

13. The laminating method according to claim 12 , wherein the plate is configured to be magnetic; the fixing fixture is configured to be magnetic and adjustable in magnetism; and
after the stress is released through the bending assembly to allow the plate and the flexible substrate to rebound, so as to realize the lamination of the flexible substrate and the protective cover plate, the method further comprises:
adjusting the magnetism of the fixing fixture to allow the fixing fixture and the plate to be magnetically attracted, so as to realize complete lamination of the flexible substrate and the protective cover plate.

14. The laminating method according to claim 12 , wherein:
a shape of a bent outer side surface of the flexible substrate is coincident with a shape of a bent inner side surface of the protective cover plate, or
a bending curvature diameter of the bent outer side surface of the flexible substrate is smaller than a bending curvature diameter of the bent inner side surface of the protective cover plate.

15. The laminating method according to claim 12 , wherein
said applying the stress through the bending assembly to drive the plate and the flexible substrate on the plate to be bent towards the side of the plate facing away from the flexible substrate, comprises:
stretching the bearing membrane through the drive component to bend the bearing membrane, so as to drive the plate and the flexible substrate to be bent along with the bearing membrane.

16. The laminating method according to claim 15 , wherein the bending assembly comprises a plate resilience assisting rod; and
said driving the plate to move out of the accommodating space comprises:
driving the plate, through the plate resilience assisting rod, to be bent and to pass through an opening of the accommodating space; and
driving the plate to move out of the accommodating space from the opening of the accommodating space.

17. The laminating method according to claim 12 , wherein the fixing fixture comprises a first part and two second parts at two ends of the first part; the first part is respectively detachably connected with the two second parts; and
said fixing the protective cover plate in the accommodating space formed by the fixing fixture comprises:
detaching and separating the two second parts of the fixing fixture from the first part;
matching a main part of the protective cover plate and the first part of the fixing fixt

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Liu Xingguo
• Tang Qiang
• Wang Zhihui
• Qing Wei
• Wang Ce
• Liu Shaokui
• Deng Jia
• Wang Jialin
• Chen Zuquan
• Chai Yuanyuan

Classifications

• B32B37/0053 Primary

  Constructional details of laminating machines comprising rollers; Constructional features of the rollers · CPC title

• B32B37/0046

  characterised by constructional aspects of the apparatus · CPC title

• B32B37/10

  characterised by the pressing technique, e.g. using action of vacuum or fluid pressure · CPC title

• B32B38/0012

  Mechanical treatment, e.g. roughening, deforming, stretching · CPC title

• B32B38/1866 Primary

  conforming the layers or laminate to a convex or concave profile · CPC title