System for manufacturing a liquid crystal display including a liquid crystal display panel turning mechanism

Patent metadata

Field	Value
Publication number	US-9341869-B2
Application number	US-201313929045-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Sep 17, 2010
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A system and a method for manufacturing a liquid crystal display element through a reduced number of steps are provided, in which a liquid crystal panel is turned over, by means of a panel turning mechanism, about an axis not parallel to any of the long and short sides of the liquid crystal panel so that the positional relationship between the long and short sides of the liquid crystal panel can be reversed, after one of sheet pieces of optical functional films is bonded to the liquid crystal panel and before another of the sheet pieces is bonded thereto, which can achieve the same effect by a single operation as in the case where turning over the liquid crystal panel and rotating it are performed independently.

First claim

What is claimed is:

1. A system for manufacturing a liquid crystal display element by a process comprising feeding optical functional films from first and second continuous rolls with different widths, respectively, which are each formed by winding, into a roll, a long optical functional film comprising a polarizing film, transversely cutting the optical functional films into sheet pieces of the optical functional films, and bonding the sheet pieces to both surfaces of a rectangular liquid crystal panel, comprising:
a panel turning mechanism for turning over the liquid crystal panel after one of the sheet pieces is bonded to the liquid crystal panel and before another of the sheet pieces is bonded thereto, wherein
the panel turning mechanism turns over the liquid crystal panel about an axis not parallel to any of long and short sides of the liquid crystal panel so that a positional relationship between the long and short sides of the liquid crystal panel can be reversed, and
wherein the panel turning mechanism comprises a long side-supporting part to support a long side of the liquid crystal panel and a short side-supporting part to support a short side of the liquid crystal panel, and the panel turning mechanism is configured to turn over the liquid crystal panel about an axis inclined by 45° from a feed direction of the liquid crystal panel to a direction parallel to a surface of the liquid crystal panel.

2. A system for manufacturing a liquid crystal display element by a process comprising feeding sheet pieces of optical functional films and carrier films from first and second continuous rolls with different widths, respectively, which are each formed by winding, into a roll, a laminate comprising a carrier film and sheet pieces of an optical functional film comprising a polarizing film, peeling off the sheet pieces of the optical functional films from the carrier films, and bonding the sheet pieces to both surfaces of a rectangular liquid crystal panel, comprising:
a panel turning mechanism for turning over the liquid crystal panel after one of the sheet pieces is bonded to the liquid crystal panel and before another of the sheet pieces is bonded thereto, wherein
the panel turning mechanism turns over the liquid crystal panel about an axis not parallel to any of long and short sides of the liquid crystal panel so that a positional relationship between the long and short sides of the liquid crystal panel can be reversed, and
wherein the panel turning mechanism comprises a long side-supporting part to support a long side of the liquid crystal panel and a short side-supporting part to support a short side of the liquid crystal panel, and the panel turning mechanism is configured to turn over the liquid crystal panel about an axis inclined by 45° from a feed direction of the liquid crystal panel to a direction parallel to a surface of the liquid crystal panel.

3. The system according to claim 1 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis passing through a central portion of the liquid crystal panel.

4. The system according to claim 1 , wherein the panel turning mechanism shifts the liquid crystal panel to a level different from the level where the liquid crystal panel is fed and then turns over the liquid crystal panel about an axis passing through the liquid crystal panel.

5. The system according to claim 1 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis passing through a corner portion of the liquid crystal panel.

6. The system according to claim 1 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis not passing through the liquid crystal panel.

7. The system according to claim 5 , wherein the liquid crystal panel is fed along a linear feed path, and
the panel turning mechanism turns over the liquid crystal panel so that the liquid crystal panel is displaced from the feed path, and then transfers the liquid crystal panel onto the feed path.

8. The system according to claim 2 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis passing through a central portion of the liquid crystal panel.

9. The system according to claim 2 , wherein the panel turning mechanism shifts the liquid crystal panel to a level different from the level where the liquid crystal panel is fed and then turns over the liquid crystal panel about an axis passing through the liquid crystal panel.

10. The system according to claim 2 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis passing through a corner portion of the liquid crystal panel.

11. The system according to claim 2 , wherein the panel turning mechanism turns over the liquid crystal panel about an axis not passing through the liquid crystal panel.

12. The system according to claim 10 , wherein the liquid crystal panel is fed along a linear feed path, and
the panel turning mechanism turns over the liquid crystal panel so that the liquid crystal panel is displaced from the feed path, and then transfers the liquid crystal panel onto the feed path.

Assignees

• Nitto Denko Corp

Inventors

• Hirata Satoshi
• Kondo Seiji
• Hada Kazuya

Classifications

• B43K8/028

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• B43K21/20

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• B43K21/045

  with writing-cores automatically replaced from magazines · CPC title

• B43K21/033 Primary

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• B43K21/006

  Pencil-barrels · CPC title