System for manufacturing display unit

Patent metadata

Field	Value
Publication number	US-10807348-B2
Application number	US-201716328020-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Aug 25, 2016
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

Provided is a system for manufacturing a display unit, the system including: a carrying unit which carries an optical film including a polarizing film including an adhesive layer and a release film to which the polarizing film is bonded to be peeled off through the adhesive layer; a cutting unit which cuts the optical film by a predetermined depth, in which the release film is not cut, and forms a polarizing film sheet piece on the optical film; a peeling unit which peels the polarizing film sheet piece from the release film; and an attachment unit which attaches the polarizing film sheet piece peeled from the release film to a panel, in which the attachment unit includes: a pair of attachment rolls which presses and attaches the polarizing film sheet piece onto one surface of the panel; and a magnetic force generating unit or a suction part, which suppresses an upper attachment roll positioned at an upper side between the pair of attachment rolls from sagging by using magnetic force or suction.

First claim

What is claimed is:

1. A system for manufacturing a display unit, which attaches an optical film to a panel, the system comprising:
a carrying unit which carries the optical film including a polarizing film;
a cutting unit which cuts the optical film to a size corresponding to a size of the panel; and
an attachment unit which attaches the optical film to the panel,
wherein the attachment unit includes:
an attachment roll which presses and attaches the optical film onto one surface of the panel; and
a sagging suppressing unit which suppresses the attachment roll from sagging.

2. The system of claim 1 , wherein the sagging suppressing unit includes a magnetic force generating unit which suppresses the attachment roll from sagging by using magnetic force.

3. The system of claim 2 , wherein the magnetic force generating unit includes a permanent magnet having an intensity of 20 to 50 MGOe.

4. The system of claim 2 , wherein the magnetic force generating unit includes an electromagnet, of which magnetic force is adjusted by adjusting an amount of an applied current.

5. The system of claim 2 , wherein the magnetic force generating unit includes a plurality of magnetic force generating units which are disposed while being spaced apart from one another in a longitudinal direction of the attachment roll.

6. The system of claim 1 , wherein the sagging suppressing unit includes a support part which is in contact with a part of an outer peripheral surface of the attachment roll and supports the attachment roll.

7. The system of claim 2 , wherein the sagging suppressing unit adjusts a distance between the magnetic force generating unit and the attachment roll.

8. The system of claim 1 , wherein a diameter of the attachment roll is 20 to 80 mm.

9. The system of claim 1 , wherein a length of the attachment roll is 1,800 to 3,700 mm.

10. The system of claim 2 , wherein the magnetic force generating unit is in contact with a part of an outer peripheral surface of the attachment roll and is in the form of a roll which is capable of supporting the attachment roll.

11. The system of claim 2 , wherein the attachment roll includes a ferromagnetic substance at a position facing the magnetic force generating unit.

12. The system of claim 1 , wherein the sagging suppressing unit directs suction toward the attachment roll and suppresses the attachment roll from sagging by using suction force.

Assignees

• Lg Chemical Ltd

Inventors

• Park San
• Choi Hang Suk
• Jang Eung Jin
• Lee Suk Jae
• Park Kyung Hyeok
• Jeung Bong Su
• Ryoo Jea Han
• Nam Pil Soo
• Lee Beom Seok
• Lim Yu Jin

Classifications

• G02F1/1335 Primary

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/1303

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• B32B37/10 Primary

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

• G02B5/3033

  in the form of a thin sheet or foil, e.g. Polaroid · CPC title

• B29D11/0073

  Optical laminates · CPC title