# US 2013/0153155 A1 · System for manufacturing liquid crystal display device

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- Number: US 2013/0153155 A1
- Document ID: US20130153155A1
- Status: Published application
- Kind: A1
- Application number: 13/761,536
- Filed: 2013-02-07
- Published: 2013-06-20
- Earliest claimed: 2010-09-30
- Assignees: Nitto Denko Corporation
- Inventors: Satoshi Hirata; Seiji Kondo
- Web page: https://patentgrep.com/patent/US20130153155A1

## CPC

- B32B 38/1808: {characterised by the laying up of the layers}
- G02F 1/1303: {Apparatus specially adapted to the manufacture of LCDs}
- G02F 1/133528: {Polarisers}
- Y10T 156/10: Methods of surface bonding and/or assembly therefor
- Y10T 156/1062: Prior to assembly
- Y10T 156/1317: Means feeding plural workpieces to be joined
- Y10T 156/1322: Severing before bonding or assembling of parts
- Y10T 156/17: Surface bonding means and/or assemblymeans with work feeding or handling means
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A system for manufacturing a liquid crystal display device, comprising a panel turning mechanism that has: a long side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one long side of the liquid crystal panel; and a short side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one short side of the liquid crystal panel and is configured to turn over the liquid crystal panel about an axis not parallel to any of the long and short sides of the liquid crystal panel in such a manner that the positional relationship between the long and short sides is reversed while both the long and short sides are supported.

## Claims

### Claim 1

A system for manufacturing a liquid crystal display device by bonding sheet pieces of optical functional films comprising polarizing films 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 of optical functional films is bonded to the liquid crystal panel and before another of the sheet pieces of optical functional films is bonded thereto, wherein
the panel turning mechanism has: a long side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one long side of the liquid crystal panel; and a short side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one short side of the liquid crystal panel, and
the panel turning mechanism turns over the liquid crystal panel about a single axis neither parallel to the long side of the liquid crystal panel nor to the short side of the liquid crystal panel in such a manner that the positional relationship between the long and short sides of the liquid crystal panel is reversed.

### Claim 2 (depends on 1)

The system according to claim 1, wherein
the long side-supporting part comes into contact with only an end face along one long side of the liquid crystal panel to support the liquid crystal panel, and
the short side-supporting part comes into contact with only an end face along one short side of the liquid crystal panel to support the liquid crystal panel.

### Claim 3 (depends on 2)

The system according to claim 2, wherein
the long side-supporting part comes into contact with only an end face along a long side of the liquid crystal panel to support the liquid crystal panel, wherein the long side is closer to the single axis, and
the short side-supporting part comes into contact with only an end face along a short side of the liquid crystal panel to support the liquid crystal panel, wherein the short side is closer to the single axis.

### Claim 4 (depends on 1)

The system according to claim 1, wherein the panel turning mechanism has a both surface-contact part for coming into contact with at least part of both surfaces of the liquid crystal panel.

### Claim 5 (depends on 1)

The system according to claim 1, wherein the panel turning mechanism turns over the liquid crystal panel about an axis inclined by 45° from a direction of feeding of the liquid crystal panel to a direction parallel to the surface of the liquid crystal panel.

### Claim 6 (depends on 1)

The system according to claim 1, which is for manufacturing the liquid crystal display device 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 to form sheet pieces of the optical functional films, and bonding the sheet pieces to both surfaces of the rectangular liquid crystal panel.

### Claim 7 (depends on 1)

The system according to claim 1, which is for manufacturing the liquid crystal display device 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 the rectangular liquid crystal panel.