Panel reversing apparatus, and system and method of manufacturing optical display element

Patent metadata

Field	Value
Publication number	US-10429678-B2
Application number	US-201715619817-A
Country	US
Kind code	B2
Filing date	Jun 12, 2017
Priority date	Jun 20, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

Disclosed is a panel reversing apparatus which reverses a panel, the panel reversing apparatus including: a panel support unit which supports the panel; and a rotating unit which rotates the panel support unit so as to reverse a direction, in which one surface of the panel supported by the panel support unit faces, and a direction, in which the other surface of the panel faces, in which the panel support unit includes a single surface contact unit which is in contact with only one surface between the one surface and the other surface of the panel.

First claim

What is claimed is:

1. A method of manufacturing an optical display element by laminating an optical film on both surfaces of a panel, the method comprising:
supporting, by a panel reversing apparatus, a panel, of which an optical film is laminated on one surface, and reversing the panel before an optical film is laminated on the other surface of the panel,
wherein in the reversing of the panel, the panel is reversed by the panel reversing apparatus which includes a panel support unit including a single surface contact unit contacting only the other surface of the panel to support the panel, and a rotating unit which rotates the panel support unit so as to reverse a direction, in which one surface of the panel supported by the panel support unit faces, and a direction, in which the other surface of the panel faces,
wherein the panel support unit further comprises an absorbing means comprising a plurality of suction holes,
wherein the single surface contact unit includes a head which is in contact with a center of a contact surface of the panel, and at least one pair of radial arms extending in an outwardly radial direction from the head to be in contact with at least a part of the contact surface of the panel and positioned in a diagonal line of the contact surface of the panel, and
wherein the plurality of suction holes are arranged in the head and radial arms of the single surface contact unit.

2. The method of claim 1 , further comprising:
first laminating a sheet piece of a first optical film formed by unwinding the first optical film from a first film roll, around which the elongated first optical film is wound, and cutting the first optical film in a width direction, on one surface of the panel; and
second laminating a sheet piece of a second optical film formed by unwinding the second optical film from a second film roll, around which the elongated second optical film having a different width from a width of the first optical film is wound, and cutting the second optical film in a width direction, on the other surface of the panel.

3. The method of claim 1 , further comprising:
first laminating a sheet piece of a first optical film on one surface of the panel by peeling a sheet piece of a first optical film from a first release film by unwinding the first release film from a first film roll, around which the sheet piece of the first optical film is wound while being bonded to the elongated first release film, together with the sheet piece of the first optical film; and
second laminating a sheet piece of a second optical film on the other surface of the panel by peeling a sheet piece of a second optical film from a second release film by unwinding the second release film from a second film roll, around which the sheet piece of the second optical film having a different width from a width of the first optical film is wound while being bonded to the elongated second release film, together with the sheet piece of the second optical film.

4. An apparatus for reversing a panel, the apparatus comprising:
a panel support unit which supports the panel;
a rotating unit which rotates the panel support unit so as to reverse a direction, in which one surface of the panel supported by the panel support unit faces, and a direction, in which the other surface of the panel faces; and
an absorbing means comprising a plurality of suction holes,
wherein the panel support unit includes a single surface contact unit which is in contact with only one surface between the one surface and the other surface of the panel,
wherein the single surface contact unit includes a head which is in contact with a center of a contact surface of the panel, and at least one pair of radial arms extending in an outwardly radial direction from the head to be in contact with at least a part of the contact surface of the panel and positioned in a diagonal line of the contact surface of the panel, and
wherein the plurality of suction holes are arranged in the head and radial arms of the single surface contact unit.

5. The apparatus of claim 4 , wherein the single surface contact unit maintains a contact with a contact surface of the panel through the absorbing means by vacuum adsorbing force.

6. The apparatus of claim 4 , wherein the contact surface of the panel, which is in contact with the single surface contact unit, is a surface between the one surface and the other surface of the panel before an optical film is laminated.

7. The apparatus of claim 6 , wherein the rotating unit rotates the panel support unit after a first optical film is laminated on the one surface of the panel and before a second optical film is laminated on the other surface of the panel, and the single surface contact unit is in contact with the other surface of the panel.

8. The apparatus of claim 4 , wherein the panel has a rectangular shape, and
the rotating unit rotates the panel support unit based on a rotation shaft which is not parallel to any one side of the long side and the short side so that a position relationship between the long side and the short side of the panel is reversed.

9. A system for manufacturing an optical display element by laminating an optical film on both surfaces of a panel, the system comprising:
a panel reversing apparatus which reverses a panel by supporting the panel, of which an optical film is laminated on one surface, before an optical film is laminated on the other surface of the panel,
wherein the panel reversing apparatus includes:
a panel support unit which includes a single surface contact unit contacting only the other surface of the panel to support the panel;
a rotating unit which rotates the panel support unit so as to reverse a direction, in which one surface of the panel supported by the panel support unit faces, and a direction, in which the other surface of the panel faces; and
an absorbing means comprising a plurality of suction holes,
wherein the single surface contact unit includes a head which is in contact with a center of a contact surface of the panel, and at least one pair of radial arms extending in an outwardly radial direction from the head to be in contact with at least a part of the contact surface of the panel and positioned in a diagonal line of the contact surface of the panel, and
wherein the plurality of suction holes are arranged in the head and radial arms of the single surface contact unit.

10. The system of claim 9 , wherein the optical display element is manufactured by laminating a sheet piece of a first optical film, which is formed by unwinding the first optical film from a first film roll, around which the elongated first optical film is wound, and cutting the first optical film in a width direction, on the one surface of the panel, and laminating a sheet piece of a second optical film, which is formed by unwinding the second optical film from a second film roll, around which the elongated second optical film having a different width from a width of the first optical film is wound, and cutting the second optical film in a width direction, on the other surface of the panel.

11. The system of claim 9 , wherein the optical display element is manufactured by peeling a sheet piece of a first optical film from a first release film by unwinding the first release film from a first film roll, around which the sheet piece of the first optical film is wound while being bonded to the elongated first release film, together with the sheet piece of the first optical film and laminating the sheet piece of the first optical film on one surface of the panel, and peeling a sheet piece of a second optical film from a second release film by unwinding the second release film from a second

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C09J7/29

  Laminated material (metallised plastics C09J7/22) · CPC title

• B32B37/0046

  characterised by constructional aspects of the apparatus · CPC title

• B32B2551/00

  Optical elements · CPC title

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title

• G02F1/1303 Primary

  Apparatus specially adapted to the manufacture of LCDs · CPC title