Method of manufacturing display device

Patent metadata

Field	Value
Publication number	US-10919211-B2
Application number	US-201715649124-A
Country	US
Kind code	B2
Filing date	Jul 13, 2017
Priority date	Jul 22, 2016
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A method of manufacturing a display device includes bending a first film member of a processing object such that a part of one side of the first film member surrounds a part of an outer side of a bending area of a second film member of the processing object while the first film member is laminated on the second film member.

First claim

What is claimed is:

1. A method of manufacturing a display device, the method comprising:
placing a processing object on a stage, the processing object comprising a first film member and a second film member, the first and second film members being partially adhered to each other by a first adhesive layer; and
bending the first film member of the processing object such that a part of one side of the first film member surrounds a part of an outer side of a bending area of a second film member of the processing object and the first and second film members are further adhered to each other by a second adhesive layer, the first and second adhesive layers being spaced apart from each other on opposite sides of a bent portion of the first and second film members,
wherein an empty gap is formed between the bent portion of the first film member and the bent portion of the second film member along an entire distance between the first adhesive layer and the second adhesive layer,
wherein the first film member comprises a first flexible printed circuit board, and
wherein the second film member comprises a display panel.

2. The method of claim 1 , further comprising measuring a force applied to the stage.

3. The method of claim 1 , wherein the bending comprises:
bringing a bending head into contact with the first film member; and
bending the first film member to surround the part of the outer side of the bending area of the second film member while the bending head is fixed to the first film member.

4. The method of claim 1 , wherein the bending comprises:
bending the first film member to surround the part of the outer side of the bending area of the second film member while a bending head is fixed to the first film member; and
bringing a pressing member into contact with the first film member and detaching the bending head from the first film member, and
wherein the bending head comprises a first finger and a second finger.

5. The method of claim 1 , wherein the bending comprises:
bending the first film member such that an angle formed by an extension line of the first film member and a virtual horizontal line is a right angle while a front bending head is in contact with the one side of the first film member;
detaching the front bending head from the first film member and bringing a back bending head into contact with another side of the first film member; and
bending the first film member while the back bending head is fixed to the first film member.

6. The method of claim 1 , wherein the first film member further comprises a first panel connected with the first flexible printed circuit board, and
wherein the second film member further comprises a second flexible printed circuit board connected with the display panel.

7. The method of claim 6 , wherein the display panel has the bending area, and
wherein the bending comprises bending the first flexible printed circuit board such that the part of the one side of the first flexible printed circuit board surrounds the part of the outer side of the bending area of the display panel while a bending head is fixed to the first flexible printed circuit board.

8. The method of claim 7 , wherein the bending comprises:
attaching an auxiliary tape to the first flexible printed circuit board; and
bending the first flexible printed circuit board such that the part of the one side of the first flexible printed circuit board surrounds the part of the outer side of the bending area of the display panel while the bending head is in contact with the first flexible printed circuit board.

9. The method of claim 6 , wherein the first flexible printed circuit board comprises a plurality of contact hands, and each of the contact hands is connected with the first panel.

10. The method of claim 9 , wherein the processing object further comprises a third adhesive layer, and
wherein the third adhesive layer, the first film member, the first adhesive layer, and the second film member are sequentially laminated.

11. The method of claim 10 , wherein an end of the third adhesive layer is outside of an end of the first adhesive layer.

12. The method of claim 10 , wherein an end of the first adhesive layer is outside of an end of the third adhesive layer.

13. The method of claim 10 , further comprising arranging a first support between the first film member and the bending area of the second film member.

14. The method of claim 13 , further comprising arranging a second support to maintain the bent shape of the first film member after the bending.

15. The method of claim 1 , wherein a plurality of electronic elements are on the first film member.

16. The method of claim 1 , further comprising measuring a gap between the first film member and the second film member after the bending, the gap being at the bent portion between the first and second adhesive layers.

17. The method of claim 1 , further comprising checking an alignment of the first film member and the second film member.

18. A method of manufacturing a display device, the method comprising:
placing a processing object on a stage; and
bending a first film member of the processing object such that a part of one side of the first film member surrounds a part of an outer side of a bending area of a second film member of the processing object, the first and second film members of the processing object being laminated on each other,
wherein a cylinder is at one side of the stage and a rod extends between the cylinder and the stage, and
wherein the rod moves into the cylinder to induce movement of the stage when the first film member contacts with the second film member during the bending.

19. A method of manufacturing a display device, the method comprising:
placing a processing object on a stage; and
bending a first film member of the processing object such that a part of one side of the first film member surrounds a part of an outer side of a bending area of a second film member of the processing object, the first and second film members of the processing object being laminated on each other,
wherein the bending comprises lowering one end of the stage by pivoting the stage.

20. A method of manufacturing a display device, the method comprising:
bending a first film member of a processing object such that a part of one side of the first film member surrounds a part of an outer side of a bending area of a second film member of the processing object, the first and second film members of the processing object being laminated on each other,
wherein the bending comprises:
bending the first film member such that an angle formed by an extension line of the first film member and a virtual horizontal line is a right angle;
bringing a bending guide into contact with the first film member; and
allowing a bending head to bend the first film member while the bending guide is in contact with the first film member.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Myung Gil
• Lee Jung Min
• Lee Sang Moo
• Jang Sae Sam

Classifications

• B32B38/1866

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

• B32B37/18

  involving the assembly of discrete sheets or panels only · CPC title

• B29L2031/3437

  Cellular phones · CPC title

• H05K3/323

  by applying an anisotropic conductive adhesive layer over an array of pads · CPC title

• B29L2031/3475

  Displays, monitors, TV-sets, computer screens · CPC title