Laminating device

Patent metadata

Field	Value
Publication number	US-11897239-B2
Application number	US-202117425950-A
Country	US
Kind code	B2
Filing date	Jan 7, 2021
Priority date	Jan 17, 2020
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A lamination device includes: an elastic lamination seat, including a deformation bearing portion, the deformation bearing portion including a bearing surface for bearing a to-be-laminated flexible display panel, and the bearing surface being configured as a curved surface protruding towards the cover plate; an auxiliary bearing film, configured to pre-bend and fix the to-be-laminated flexible display panel onto the bearing surface when the elastic lamination seat is in a natural state; and a driving mechanism, connected to the elastic lamination seat and configured to drive the elastic lamination seat to move towards or away from the cover plate, wherein when the driving mechanism drives the elastic lamination seat to move towards the cover plate, the elastic lamination seat is squeezed to produce elastic deformation and the bearing surface gradually laminates the flexible display panel onto the cover plate from the middle to two sides.

First claim

What is claimed is:

1. A lamination device, configured to laminate a cover plate onto a flexible display panel, comprising:
an elastic lamination seat, comprising a deformation bearing portion, the deformation bearing portion comprising a bearing surface for bearing a to-be-laminated flexible display panel, and the bearing surface being configured as a curved surface protruding toward the cover plate;
an auxiliary bearing film configured to pre-bend and fix the to-be-laminated flexible display panel on the bearing surface when the elastic lamination seat is in a natural state; and,
a driving mechanism connected to the elastic lamination seat and configured to drive the elastic lamination seat to move toward or away from the cover plate, wherein when the driving mechanism drives the elastic lamination seat to move toward the cover plate, the elastic lamination seat is squeezed to produce elastic deformation and the bearing surface gradually laminates the flexible display panel onto the cover plate from a middle to two sides; wherein
the bearing surface comprises second cambered surfaces at two ends, a first cambered surface between the two second cambered surfaces, and a third cambered surface;
the third cambered surface is tangentially connected with ends of the second cambered surfaces away from the first cambered surface, the third cambered surface is recessed toward the elastic lamination seat; the flexible display panel after being laminated onto the cover plate comprises curved sections at two ends and a flat section between the two curved sections;
when the driving mechanism applies an acting force to the elastic lamination seat, deformation of the third cambered surface applies an acting force to the second cambered surface along a tangential direction of a junction of the third cambered surface and the second cambered surface so as to promote the second cambered surface to be filled to the curved section of the flexible display panel and laminate the curved section with a cambered section of the cover plate;
wherein the elastic lamination seat further comprises a deformation supporting portion, the deformation supporting portion comprises a supporting surface opposite to the bearing surface and flat side surfaces located at two ends of the supporting surface, the supporting surface and each of the flat side surfaces are connected by a transitional surface, and the transitional surface is configured as a stepped surface;
wherein a maximum distance between a circle center of the second cambered surface and the first cambered surface in a third direction is H 2 , a distance between an end of the curved section away from the flat section and the flat section in the third direction is H 1 , and H 2 is less than or equal to H 1 , wherein the third direction is a direction parallel to a symmetry axis of a cross section of the elastic lamination seat;
wherein the lamination device comprises stop blocks located at two sides of the elastic lamination seat in a second direction, each of the stop blocks is movable, each of the stop blocks can move along the second direction and can move along the third direction, before the driving mechanism drives the elastic lamination seat to move towards the cover plate, each of the stop blocks moves to a position corresponding to a position of the third cambered surface.

2. The lamination device according to claim 1 , wherein a cross-sectional shape of the elastic lamination seat is a symmetrical shape, the second cambered surface is tangentially connected to the first cambered surface, and a length of the first cambered surface is equal to a length of the flat section of the flexible display panel.

3. The lamination device according to claim 2 , wherein a radius of the second cambered surface is less than or equal to a minimum radius of the curved section of the flexible display panel.

4. The lamination device according to claim 2 , wherein a width in a first direction between two ends on a side, facing the elastic lamination seat, of the flexible display panel after being laminated onto the cover plate is W, a width of the bearing surface in the first direction is W 1 , and W 1 is less than W, wherein the first direction is a direction perpendicular to a symmetry axis of a cross section of the elastic lamination seat.

5. The lamination device according to claim 2 , wherein an angle between a tangent at a junction of the second cambered surface and the third cambered surface and a first direction is α 2 , and an angle between a tangent at an endpoint of one end, away from the flat section, of the curved section of the flexible display panel and the first direction is α 1 , α 2 ≥α 1 , and the first direction is a direction perpendicular to a symmetry axis of a cross section of the elastic lamination seat.

6. The lamination device according to claim 5 , positions of the stop blocks corresponding to a position of the third cambered surface in a direction perpendicular to the flat section, each of the stop blocks having a barrier wall configured to be in contact with a side wall of the elastic lamination seat, the barrier wall preventing the deformation of the elastic lamination seat in an extending direction of the elastic lamination seat when the driving mechanism drives the elastic lamination seat to move toward the cover plate, wherein the second direction is a direction parallel to the extending direction of the elastic lamination seat.

7. The lamination device according to claim 6 , wherein the barrier wall is configured as a cambered surface protruding toward the elastic lamination seat.

8. The lamination device according to claim 5 , wherein in the second direction, a radius of the third cambered surface gradually increases from the middle of the elastic lamination seat toward two ends, and the second direction is a direction parallel to an extending direction of the elastic lamination seat.

9. The lamination device according to claim 1 , wherein the flat side surfaces are in smoothly transitional connection with the deformation bearing portion.

10. The lamination device according to claim 9 , wherein a height of the elastic lamination seat in a third direction ranges from 30 mm to 40 mm, and the third direction is a direction parallel to a normal line of the supporting surface.

11. The lamination device according to claim 9 , further comprising a base, the base being arranged between the supporting surface and the driving mechanism, the driving mechanism driving the elastic lamination seat to move through the base, a side of the base facing the supporting surface being provided with a groove matching the deformation supporting portion, the supporting surface being embedded in the groove.

12. The lamination device according to claim 1 , wherein a material of the elastic lamination seat comprises silicone, and a hardness of the elastic lamination seat ranges from 20 A to 40 A.

13. The lamination device according to claim 2 , wherein an angle of the curved section of the flexible display panel after being laminated onto the cover plate ranges from 90° to 150° .

14. The lamination device according to claim 2 , wherein the flat side surfaces are in smoothly transitional connection with the deformation bearing portion.

15. The lamination device according to claim 14 , wherein a height of the elastic lamination seat in a third direction ranges from 30 mm to 40 mm, and the third direction is a direction parallel to a normal line of the supporting surface.

16. The lamination device according to claim 14 , further comprising a base, the base being arranged between the supp

Assignees

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

Inventors

• Liu Xingguo
• Qing Wei
• Liu Shaokui
• Wang Zhihui
• Chen Zuquan
• Zeng Wei
• Shen Danping
• Deng Jia
• Wang Jialin

Classifications

• H10P72/00

  Handling or holding of wafers, substrates or devices during manufacture or treatment thereof · CPC title

• B32B37/0046 Primary

  characterised by constructional aspects of the apparatus · CPC title

• B32B38/1866 Primary

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

• B32B37/10

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

• B32B37/003

  to avoid air inclusion · CPC title