JP2013186184A - Continuous manufacturing method of optical display panel and continuous manufacturing system of optical display panel - Google Patents

Continuous manufacturing method of optical display panel and continuous manufacturing system of optical display panel Download PDF

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JP2013186184A
JP2013186184A JP2012049351A JP2012049351A JP2013186184A JP 2013186184 A JP2013186184 A JP 2013186184A JP 2012049351 A JP2012049351 A JP 2012049351A JP 2012049351 A JP2012049351 A JP 2012049351A JP 2013186184 A JP2013186184 A JP 2013186184A
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optical
bonding
film
carrier film
speed
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JP5868733B2 (en
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Kazuya Hata
和也 秦
Seiji Umemoto
清司 梅本
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to JP2012049351A priority Critical patent/JP5868733B2/en
Priority to KR1020147018863A priority patent/KR101774631B1/en
Priority to CN201380004348.1A priority patent/CN103999142B/en
Priority to PCT/JP2013/055966 priority patent/WO2013133261A1/en
Priority to TW102107932A priority patent/TWI482698B/en
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    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0047—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/342—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges
    • B29C66/9392—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges in explicit relation to another variable, e.g. speed diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4825—Pressure sensitive adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8246—Servomechanisms, e.g. servomotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
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  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Polarising Elements (AREA)
  • Theoretical Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a continuous manufacturing method of an optical display panel, capable of reducing a bubble defect prone to generate at an initial stage of bonding between an optical cell and an optical film.SOLUTION: A continuous manufacturing method of an optical display panel includes: a carrier film conveyance step for conveying a carrier film with an optical film laminated thereon; a separation step for separating the optical film from the carrier film; a front end bonding step for bonding a front end of the optical film to a front end of an optical cell; and a bonding step for bonding the optical film with an adhesive agent onto the optical cell to form the optical display panel, while conveying the optical cell so as to execute a start of bonding of a portion following the front end of the optical film of which front end is bonded, onto the optical cell, before a start of conveying the carrier film.

Description

本発明は、キャリアフィルムから剥離された光学フィルムを粘着剤を介して光学セルに貼り合せて光学表示パネルを形成する光学表示パネルの連続製造方法および光学表示パネルの連続製造システムに関する。   The present invention relates to an optical display panel continuous manufacturing method and an optical display panel continuous manufacturing system in which an optical film peeled from a carrier film is bonded to an optical cell via an adhesive to form an optical display panel.

キャリアフィルムの巻取ロールと貼合ロールとの回転速度を同期させながら、粘着剤を介して光学フィルムが形成されているキャリアフィルムを内側にして剥離手段で折り返して当該キャリアフィルムから光学フィルムを粘着剤とともに剥離するとともに、剥離された光学フィルムを粘着剤を介して光学セルに連続して貼り合せる光学表示パネルの連続製造システムが知られている（例えば、特許文献１参照）。   While synchronizing the rotation speed of the take-up roll and the laminating roll of the carrier film, the carrier film on which the optical film is formed via the adhesive is turned inside and folded by the peeling means to adhere the optical film from the carrier film. There is known a continuous manufacturing system for an optical display panel that peels together with an agent and continuously bonds the peeled optical film to an optical cell via an adhesive (for example, see Patent Document 1).

特開２００４−３３８４０８号JP 2004-338408 A

しかしながら、上記の連続製造システムでは、特に貼合初期に装置制御の不安定さ等により光学フィルムが弛み、光学セルと光学フィルムとの間に気泡を生じることが懸念される。   However, in the above continuous production system, there is a concern that the optical film is loosened due to instability of apparatus control or the like particularly in the initial stage of bonding, and bubbles are generated between the optical cell and the optical film.

本発明は、上記の課題に鑑みてなされたものであって、貼合初期に光学セルと光学フィルムとの間で生じやすい気泡不良を低減できる、光学表示パネルの連続製造方法および光学表示パネルの連続製造システムを提供する。   The present invention has been made in view of the above-described problems, and is capable of reducing bubble defects that are likely to occur between an optical cell and an optical film in the initial stage of bonding, and a method for continuously manufacturing an optical display panel and an optical display panel. Provide a continuous manufacturing system.

上記課題を解決するために、鋭意研究を重ねた結果、以下の本発明を完成するに至ったものである。すなわち、予め光学フィルムの前端部を光学セルの前端部に貼り合せた上で貼合開始タイミング（例えば、貼合ロールの回転開始タイミング）をキャリアフィルムの搬送開始タイミング（例えば、巻取ロールの回転開始タイミング）よりも早くすることで、貼合初期から光学フィルムに確実に張力を付与しながら、当該光学フィルムを光学セルに貼り合せることができ、その結果、貼合初期に光学セルと光学フィルムとの間で生じやすい気泡不良を低減できることを見出した。   As a result of intensive studies in order to solve the above problems, the present invention has been completed. That is, after the front end of the optical film is bonded to the front end of the optical cell in advance, the bonding start timing (for example, the rotation start timing of the bonding roll) is changed to the carrier film conveyance start timing (for example, the winding roll is rotated). It is possible to bond the optical film to the optical cell while reliably applying tension to the optical film from the initial stage of bonding, and as a result, the optical cell and the optical film at the initial stage of bonding. It has been found that bubble defects that tend to occur between the two can be reduced.

本発明の光学表示パネルの連続製造方法は、
粘着剤を含む光学フィルムが当該粘着剤を介して積層されているキャリアフィルムを搬送するキャリアフィルム搬送工程と、
前記キャリアフィルム搬送工程により搬送された前記キャリアフィルムを内側にして折り返して当該キャリアフィルムから前記光学フィルムを剥離する剥離工程と、
前記剥離工程により剥離された前記光学フィルムの前端部を光学セルの前端部に貼り合せる前端部貼合工程と、
前記キャリアフィルム搬送工程による前記キャリアフィルムの搬送開始よりも先に、前記前端部が貼り合された前記光学フィルムの前記前端部以降の部分の前記光学セルへの貼合開始が実行されるように、光学セルを搬送しながら、前記剥離工程で前記キャリアフィルムから剥離された前記光学フィルムを前記粘着剤を介して該光学セルに貼り合せて光学表示パネルを形成する貼合工程と、を含む。 The continuous manufacturing method of the optical display panel of the present invention is as follows.
A carrier film transporting step for transporting a carrier film in which an optical film containing an adhesive is laminated via the adhesive;
A peeling step of peeling the optical film from the carrier film by folding the carrier film conveyed by the carrier film conveying step inside;
A front end portion bonding step of bonding the front end portion of the optical film peeled by the peeling step to the front end portion of the optical cell;
Prior to the start of conveyance of the carrier film in the carrier film conveyance step, the bonding start to the optical cell of the portion after the front end of the optical film on which the front end is bonded is performed. A bonding step of forming an optical display panel by bonding the optical film peeled from the carrier film in the peeling step to the optical cell via the adhesive while transporting the optical cell.

この構成では、予め光学フィルムの前端部を光学セルの前端部に貼り合せた上で、キャリアフィルムの搬送開始よりも先に光学フィルムの光学セルへの貼合開始を実行させるため、貼合初期から光学フィルムを弛ませることなく、光学フィルムに確実に張力を付与しながら、当該光学フィルムを光学セルに貼り合せることができ、結果として、貼合初期に光学フィルムと光学セルとの間に生じやすい気泡不良を低減できる。   In this configuration, after the front end of the optical film is bonded to the front end of the optical cell in advance, the initial bonding is performed in order to start the bonding of the optical film to the optical cell prior to the start of the conveyance of the carrier film. The optical film can be bonded to the optical cell while securely applying tension to the optical film without loosening the optical film. As a result, it occurs between the optical film and the optical cell in the initial stage of bonding. Easy bubble defects can be reduced.

上記発明の一実施形態として、前記貼合工程は、前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの間にある途中の時点から所定の期間、該該光学フィルムが剥離されたキャリアフィルムの搬送速度を前記光学フィルムの該光学セルへの貼合速度に一致させる、または前記貼合速度よりも大きくさせることが好ましい。   As one Embodiment of the said invention, the said bonding process is a predetermined period from the time in the middle between the bonding start time which starts bonding the said optical film to the said optical cell, and the bonding completion time which completes bonding. It is preferable to make the conveyance speed of the carrier film from which the optical film has been peeled coincide with the bonding speed of the optical film to the optical cell, or to be larger than the bonding speed.

例えば、キャリアフィルムの搬送速度よりも貼合速度を大きくした関係を貼合処理期間の全域で維持した場合には、貼り合せ全域に渡って、光学フィルムに掛かる張力が増大する一方であり、光学表示パネルに反り（湾曲）状態が発生する恐れがある。よって、貼合開始から貼合完了までの間にある途中の時点から所定期間、光学フィルムが剥離された（後の）キャリアフィルムの搬送速度を貼合速度と同期させる、または貼合速度より大きくすることで、光学フィルムに掛かる張力の増大を抑え、光学表示パネルの反り発生を抑えることができる。   For example, when maintaining the relationship in which the bonding speed is larger than the conveying speed of the carrier film throughout the entire bonding process period, the tension applied to the optical film is increasing over the entire bonding area, The display panel may be warped (curved). Therefore, the conveyance speed of the carrier film from which the optical film has been peeled off (after) is synchronized with the bonding speed from the midpoint between the start of bonding and the completion of bonding, or greater than the bonding speed. By doing so, an increase in the tension applied to the optical film can be suppressed, and the occurrence of warpage of the optical display panel can be suppressed.

上記発明の一実施形態として、前記途中の時点から剥離完了時点までの間で、前記貼合速度と前記キャリアフィルムの搬送速度とを一致させることが好ましい。   As one embodiment of the invention described above, it is preferable that the bonding speed and the conveying speed of the carrier film coincide with each other between the intermediate point and the peeling completion point.

上記発明の一実施形態として、前記貼合工程は、前記貼合開始時点から前記貼合完了時点まで、前記貼合速度がゼロより大きい構成であり、および、前記貼合完了前に前記キャリアフィルムの搬送速度がゼロである構成である。   As one Embodiment of the said invention, the said bonding process is a structure from which the said bonding speed is larger than zero from the said bonding start time to the said bonding completion time, and the said carrier film before the said completion of bonding. This is a configuration in which the transport speed is zero.

この構成では、貼合開始時点から貼合完了時点まで貼合速度をゼロより大きくさせることで、貼合完了を安定して行える。また、貼合完了前にキャリアフィルムの搬送速度をゼロにさせることで、次に光学セルと貼り合わされる光学フィルムの巻き込みを防止できる。   In this configuration, the bonding completion can be stably performed by increasing the bonding speed from zero from the bonding start time to the bonding completion time. Moreover, the conveyance speed of a carrier film is made into zero before completion of bonding, and the entrainment of the optical film bonded with an optical cell next can be prevented.

また、他の発明の光学表示パネルの連続製造システムは、
粘着剤を含む光学フィルムが当該粘着剤を介して積層されているキャリアフィルムを搬送するキャリアフィルム搬送部と、
前記キャリアフィルム搬送部により搬送されたキャリアフィルムを内側にして折り返して当該キャリアフィルムから前記光学フィルムを剥離する剥離部と、
前記剥離部で剥離された前記光学フィルムの前端部を光学セルの前端部に貼り合せ、かつ、 光学セルを搬送しながら、前記キャリアフィルムから剥離された前記光学フィルムを前記粘着剤を介して該光学セルに貼り合せて光学表示パネルを形成する貼合部と、
前記キャリアフィルム搬送部による前記キャリアフィルムの搬送開始よりも先に、前記貼合部による前記前端部が貼り合された前記光学フィルムの前記前端部以降の部分の前記光学セルへの貼合開始が実行されるように、該貼合部を駆動制御し、かつ該キャリアフィルム搬送部を駆動制御する駆動制御部と、を有する。 Moreover, the continuous manufacturing system of the optical display panel of another invention is as follows.
A carrier film transport unit that transports a carrier film in which an optical film containing an adhesive is laminated via the adhesive;
A peeling part for turning the carrier film conveyed by the carrier film conveying part inside and peeling the optical film from the carrier film;
The front end portion of the optical film peeled off at the peeling portion is bonded to the front end portion of the optical cell, and the optical film peeled off from the carrier film is conveyed through the adhesive while transporting the optical cell. A bonding part that forms an optical display panel by bonding to an optical cell;
Prior to the start of conveyance of the carrier film by the carrier film conveyance unit, the bonding start to the optical cell of the portion after the front end of the optical film to which the front end by the bonding unit is bonded is performed. And a drive control unit that drives and controls the laminating unit and drives and controls the carrier film transport unit.

上記発明の一実施形態として、前記キャリアフィルム搬送部が、前記剥離部よりも上流側に、キャリアフィルムの搬送時の張力を調整する張力調整部を有することが好ましい。この張力調整部により、貼合初期において光学フィルムにしっかり張力を付与でき、その結果、貼合初期の気泡不良をより低減できる。張力調整部としては、ダンサーロールが例示される。   As one embodiment of the invention described above, it is preferable that the carrier film transport unit has a tension adjusting unit that adjusts the tension during transport of the carrier film on the upstream side of the peeling unit. By this tension adjusting unit, it is possible to firmly apply tension to the optical film in the initial stage of bonding, and as a result, it is possible to further reduce bubble defects in the initial stage of bonding. An example of the tension adjustment unit is a dancer roll.

上記発明の一実施形態として、前記駆動制御部が、
前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの間にある途中の時点から所定の期間、前記キャリアフィルム搬送部による前記光学フィルムが剥離されたキャリアフィルムの搬送速度を前記貼合部による前記光学フィルムの前記光学セルへの貼合速度に一致させるように、または前記貼合速度よりも大きくなるように、該貼合部および該キャリアフィルム搬送部を駆動制御することが好ましい。 As one embodiment of the invention, the drive control unit is
The optical film by the carrier film transport unit was peeled off for a predetermined period from a point in the middle between the start of bonding and the completion of bonding to start the bonding of the optical film to the optical cell. The laminating part and the carrier film are conveyed so that the conveying speed of the carrier film is matched with the laminating speed of the optical film to the optical cell by the laminating part or larger than the laminating speed. It is preferable to drive and control the unit.

上記発明の一実施形態として、前記駆動制御部が、
前記貼合開始時点から前記貼合完了時点まで、前記貼合速度がゼロより大きくなるように、該貼合部を駆動制御し、および、前記貼合完了前に前記キャリアフィルムの搬送速度をゼロにするように、該キャリアフィルム搬送部を駆動制御することが好ましい。 As one embodiment of the invention, the drive control unit is
From the bonding start time to the bonding completion time, the bonding part is driven and controlled so that the bonding speed is greater than zero, and the carrier film transport speed is zero before the bonding is completed. As described above, it is preferable to drive and control the carrier film transport unit.

上記発明の一実施形態として、前記駆動制御部が、
次の貼合開始時点直前において、貼合速度＝０、キャリアフィルム搬送速度＝０になるように、貼合部を駆動制御し、キャリアフィルム搬送部を駆動制御することが好ましい。 As one embodiment of the invention, the drive control unit is
Immediately before the next bonding start time point, it is preferable to drive and control the bonding part and drive and control the carrier film conveying part so that the bonding speed = 0 and the carrier film conveying speed = 0.

上記発明の一実施形態として、前記貼合部が、前記光学フィルムを前記光学セル面に押圧する貼合ローラと、該貼合ローラに対向して配置される受けローラとを有し、該貼合ローラと該受けローラとの間に該光学フィルムと該光学セルとを挟持しつつ搬送しながら、該光学セル面に該光学フィルムを貼り合せ、
前記駆動制御部が、前記貼合ローラおよび／または前記受けローラを駆動制御する。 As one embodiment of the invention, the bonding unit includes a bonding roller that presses the optical film against the optical cell surface, and a receiving roller that is disposed to face the bonding roller. Bonding the optical film to the optical cell surface while conveying the optical film and the optical cell while sandwiching the optical film between the combining roller and the receiving roller,
The drive control unit drives and controls the bonding roller and / or the receiving roller.

上記発明の一実施形態として、キャリアフィルム搬送部は、剥離部の搬送上流側に配置されてキャリアフィルムを搬送する上流側フィルム供給部（フィードローラ）および／または剥離部の搬送下流側に配置されてキャリアフィルムを搬送する下流側フィルム供給部（フィードローラ）を有し、前記駆動制御部が、キャリアフィルムを搬送するために、上流側フィルム供給部および／または下流側フィルム供給部を駆動制御する。   As one embodiment of the invention, the carrier film transport unit is disposed on the upstream side of the peeling unit and upstream of the upstream side film supply unit (feed roller) for transporting the carrier film and / or on the downstream side of the transport of the peeling unit. A downstream film supply unit (feed roller) that conveys the carrier film, and the drive control unit drives and controls the upstream film supply unit and / or the downstream film supply unit to convey the carrier film. .

上記発明の一実施形態として、キャリアフィルム搬送部は、光学フィルムが剥離された後のキャリアフィルムを巻き取る巻取部を有して構成され、前記駆動制御部が、キャリアフィルムを搬送するために、巻取部を駆動制御する。また、キャリアフィルム搬送部は、上流側フィルム供給部、下流側フィルム供給部および巻取部の内、１つ以上を有して構成されていてもよい。   As one embodiment of the invention, the carrier film transport unit is configured to include a winding unit that winds up the carrier film after the optical film is peeled off, and the drive control unit transports the carrier film. The drive of the winding unit is controlled. In addition, the carrier film transport unit may include one or more of an upstream film supply unit, a downstream film supply unit, and a winding unit.

光学表示パネルの連続製造システムの一例を示した概略図。Schematic which showed an example of the continuous manufacturing system of an optical display panel. 駆動制御部の動作について説明するための図。The figure for demonstrating operation | movement of a drive control part. 駆動制御部の動作について説明するための図。The figure for demonstrating operation | movement of a drive control part. 駆動制御部の動作について説明するための図。The figure for demonstrating operation | movement of a drive control part. 駆動制御部の動作について説明するための図。The figure for demonstrating operation | movement of a drive control part. 駆動制御部の動作について説明するための図。The figure for demonstrating operation | movement of a drive control part. 実施形態の貼合速度と巻取速度との速度関係を示す図。The figure which shows the speed relationship between the bonding speed | velocity | rate and winding speed of embodiment. 実施例１の速度条件を示す図。FIG. 3 is a diagram illustrating speed conditions of the first embodiment. 実施例２の速度条件を示す図。FIG. 6 is a diagram illustrating speed conditions of the second embodiment. 実施例３の速度条件を示す図。FIG. 6 is a diagram illustrating speed conditions of Example 3. 実施例４の速度条件を示す図。FIG. 6 is a diagram illustrating speed conditions of Example 4. 実施例５の速度条件を示す図。FIG. 10 is a diagram illustrating speed conditions of Example 5. 比較例１の速度条件を示す図。The figure which shows the speed conditions of the comparative example 1. 比較例２の速度条件を示す図。The figure which shows the speed conditions of the comparative example 2. FIG.

本実施形態において、光学フィルムがキャリアフィルムに形成されている形態は特に制限されない。例えば、ロール状に巻かれたもので構成されていてもよい。ロールとしては、例えば、（１）キャリアフィルムと当該キャリアフィルム上に粘着剤を介して形成された帯状の光学フィルムとを有する積層光学フィルムをロール状に巻いたものが挙げられる。この場合、光学表示パネルの連続製造システムは、帯状の光学フィルムから光学フィルムを形成するために、キャリアフィルムを切断せずに残して、当該帯状の光学フィルムおよび粘着剤を所定間隔に切断（積層光学フィルムをハーフカット）する切断部を有する。   In the present embodiment, the form in which the optical film is formed on the carrier film is not particularly limited. For example, you may be comprised by what was wound by roll shape. Examples of the roll include a roll of a laminated optical film having (1) a carrier film and a belt-like optical film formed on the carrier film via an adhesive. In this case, in order to form the optical film from the belt-shaped optical film, the continuous production system of the optical display panel leaves the carrier film without cutting and cuts the belt-shaped optical film and the adhesive at predetermined intervals (lamination). It has a cutting part for half-cutting an optical film.

また、ロールとして、例えば、（２）キャリアフィルムと当該キャリアフィルム上に粘着剤を介して形成された光学フィルムとを有する積層光学フィルムをロール状に巻いたもの（いわゆる切り目入り積層光学フィルムのロール）が挙げられる。なお、光学フィルムとしては、偏光フィルム、輝度向上フィルム、位相差フィルム、これらを２つ以上積層した光学フィルム等が挙げられる。   Moreover, as a roll, for example, a roll of a laminated optical film having (2) a carrier film and an optical film formed on the carrier film via an adhesive (a roll of a so-called cut laminated optical film) ). Examples of the optical film include a polarizing film, a brightness enhancement film, a retardation film, and an optical film in which two or more of these are laminated.

例えば、図１に示す第１ロール１は、第１キャリアフィルム１２と、第１キャリアフィルム１２に積層された第１偏光フィルム（光学フィルムの一例）１３を有する第１積層光学フィルム１１をロール状に巻いたものである。第１偏光フィルム１３はフィルム本体１３ａと粘着剤層１３ｂとを有する。   For example, the 1st roll 1 shown in FIG. 1 rolls the 1st laminated | multilayer optical film 11 which has the 1st carrier film 12 and the 1st polarizing film (an example of an optical film) 13 laminated | stacked on the 1st carrier film 12. It is wrapped around. The first polarizing film 13 has a film body 13a and an adhesive layer 13b.

偏光フィルムは、例えば、偏光子（厚さは１．５〜８０μｍ程度）と、偏光子の片面または両面に偏光子保護フィルム（厚さは一般的に１〜５００μｍ程度）が接着剤または接着剤なしで形成される。第１積層光学フィルム１１を構成する他のフィルムとして、例えば、λ／４板、λ／２板等の位相差フィルム（厚さは一般的に１０〜２００μｍ）、視角補償フィルム、輝度向上フィルム、表面保護フィルム等が挙げられる。積層光学フィルムの厚みは、例えば、１０μｍ〜５００μｍの範囲が挙げられる。偏光フィルムとキャリアフィルムとの間に介在する粘着剤は、特に制限されず、例えば、アクリル系粘着剤、シリコーン系粘着剤、ウレタン系粘着剤等が挙げられる。粘着剤の層厚みは、例えば、１０μｍ〜５０μｍの範囲が好ましい。粘着剤とキャリアフィルムとの剥離力としては、例えば、０．１５（Ｎ／５０ｍｍ幅サンプル）が例示されるが、特にこれに限定されない。剥離力は、ＪＩＳ Ｚ０２３７に準じて測定される。   Examples of the polarizing film include a polarizer (thickness is about 1.5 to 80 μm) and a polarizer protective film (thickness is generally about 1 to 500 μm) on one or both sides of the polarizer as an adhesive or an adhesive. Formed without. As another film constituting the first laminated optical film 11, for example, a retardation film (thickness is generally 10 to 200 μm) such as a λ / 4 plate and a λ / 2 plate, a viewing angle compensation film, a brightness enhancement film, A surface protective film etc. are mentioned. As for the thickness of a laminated optical film, the range of 10 micrometers-500 micrometers is mentioned, for example. The pressure-sensitive adhesive interposed between the polarizing film and the carrier film is not particularly limited, and examples thereof include an acrylic pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, and a urethane pressure-sensitive adhesive. The layer thickness of the pressure-sensitive adhesive is preferably in the range of 10 μm to 50 μm, for example. Examples of the peeling force between the pressure-sensitive adhesive and the carrier film include 0.15 (N / 50 mm width sample), but are not particularly limited thereto. The peeling force is measured according to JIS Z0237.

キャリアフィルムは、例えばプラスチックフィルム（例えば、ポリエチレンテレフタレート系フィルム、ポリオレフィン系フィルム等）等の従来公知のフィルムを用いることができる。また、必要に応じシリコーン系や長鎖アルキル系、フッ素系や硫化モリブデン等の適宜な剥離剤でコート処理したものなどの、従来に準じた適宜なものを用いうる。   As the carrier film, for example, a conventionally known film such as a plastic film (for example, a polyethylene terephthalate film, a polyolefin film, or the like) can be used. In addition, if necessary, an appropriate material according to the prior art such as a silicone-based, long-chain alkyl-based, fluorine-based or molybdenum sulfide-coated material may be used.

光学表示パネルは、光学セルの片面または両面に少なくとも光学フィルムが粘着剤を介して貼り合わされたものであり、必要に応じて駆動回路が組込まれる。光学セルは、例えば、液晶セル、有機ＥＬセルが挙げられる。液晶セルは、例えば、垂直配向（ＶＡ）型、面内スイッチング（ＩＰＳ）型などの任意なタイプのものを用いることができる。有機ＥＬセルは、例えば、トップエミッション方式、ボトムエミッション方式、ダブルエミッション方式などの任意のタイプのものを用いることができる。図１に示す液晶セルＰは、対向配置される一対の基板（第１基板Ｐａ、第２基板Ｐｂ）間に液晶層が封止された構成である。   In the optical display panel, at least an optical film is bonded to one side or both sides of an optical cell via an adhesive, and a drive circuit is incorporated as necessary. Examples of the optical cell include a liquid crystal cell and an organic EL cell. As the liquid crystal cell, for example, an arbitrary type such as a vertical alignment (VA) type or an in-plane switching (IPS) type can be used. As the organic EL cell, for example, an arbitrary type such as a top emission method, a bottom emission method, a double emission method, or the like can be used. The liquid crystal cell P shown in FIG. 1 has a configuration in which a liquid crystal layer is sealed between a pair of substrates (a first substrate Pa and a second substrate Pb) arranged to face each other.

＜実施形態１＞
以下、図１〜３を参照しながら、本実施形態に係る光学表示パネルの連続製造システムを具体的に説明するが、本発明は本実施形態の態様に限定されるものではない。光学セルとして液晶セルを、光学フィルムとして偏光フィルムを例に説明する。以下では、偏光フィルムが両面に貼り合わされた液晶セルを液晶表示パネルと称する。図１は光学表示パネルの連続製造システムの概略図であり、図２は駆動制御部の動作を説明するための図である。図３は貼合速度と巻取速度との速度関係を示す図である。 <Embodiment 1>
Hereinafter, a continuous production system for an optical display panel according to the present embodiment will be specifically described with reference to FIGS. 1 to 3, but the present invention is not limited to the aspect of the present embodiment. A liquid crystal cell will be described as an example of an optical cell, and a polarizing film will be described as an example of an optical film. Hereinafter, a liquid crystal cell in which a polarizing film is bonded to both surfaces is referred to as a liquid crystal display panel. FIG. 1 is a schematic view of an optical display panel continuous manufacturing system, and FIG. 2 is a diagram for explaining the operation of a drive control unit. FIG. 3 is a diagram showing a speed relationship between the bonding speed and the winding speed.

本実施形態に係る光学表示パネルの連続製造システムは、第１キャリアフィルム搬送部１０１と、第１剥離部４０と、第１液晶セル搬送部１０２と、第１貼合部１０３（第１貼合ロール５０ａ、第１駆動ロール５０ｂ）と、第１駆動制御部１１０と、第２液晶セル搬送部１０４と、第２キャリアフィルム搬送部と、第２剥離部と、第２貼合部（第２貼合ロール、第２駆動ロール）と、第２駆動制御部と、光学表示パネル搬送部とを有する。本実施形態では、液晶セルの上側から偏光フィルムを貼り合せて、次いで、偏光フィルムが貼り合された液晶セルを反転（裏表反転、必要に応じて９０°回転）させて、当該液晶セルの上側から偏光フィルムを貼り合せているが、液晶セルの下側から偏光フィルムを貼り合せ、液晶セルを反転させて、液晶セルの下側から偏光フィルムを貼り合せてもよく、液晶セルの上側から偏光フィルムを貼り合せ、液晶セルを反転させないで、液晶セルの下側から偏光フィルムを貼り合せてもよく、液晶セルの下側から偏光フィルムを貼り合せ、液晶セルを反転させないで、液晶セルの上側から偏光フィルムを貼り合せてもよい。   The continuous manufacturing system of the optical display panel which concerns on this embodiment is the 1st carrier film conveyance part 101, the 1st peeling part 40, the 1st liquid crystal cell conveyance part 102, and the 1st bonding part 103 (1st bonding). Roll 50a, first drive roll 50b), first drive control unit 110, second liquid crystal cell transport unit 104, second carrier film transport unit, second peeling unit, and second bonding unit (second A bonding roll, a second drive roll), a second drive control unit, and an optical display panel transport unit. In the present embodiment, the polarizing film is bonded from the upper side of the liquid crystal cell, and then the liquid crystal cell to which the polarizing film is bonded is reversed (reversed from front to back, rotated by 90 ° as necessary) to move the upper side of the liquid crystal cell. The polarizing film may be bonded from the lower side of the liquid crystal cell, the polarizing film may be reversed from the lower side of the liquid crystal cell, and the polarizing film may be bonded from the lower side of the liquid crystal cell. A polarizing film may be bonded from the lower side of the liquid crystal cell without attaching the film and the liquid crystal cell being inverted, and an upper side of the liquid crystal cell may be bonded without attaching the polarizing film from the lower side of the liquid crystal cell. Alternatively, a polarizing film may be attached.

第１液晶セル搬送部１０２は、第１貼合部１０３に液晶セルＰを供給し搬送する。本実施形態では、第１液晶セル搬送部１０２は、搬送ローラ部８０および吸着プレート等を有して構成される。搬送ローラ８０を回転させることで、あるいは吸着プレートを移送させることで、液晶セルＰを製造ライン下流側へ搬送する。第１偏光フィルム１３１の貼合処理において、第１液晶セル搬送部１０２は、後述する第１駆動制御部１１０に制御され、液晶セルＰを第１貼合部１０３の貼合位置に搬送する。   The 1st liquid crystal cell conveyance part 102 supplies the liquid crystal cell P to the 1st bonding part 103, and conveys it. In the present embodiment, the first liquid crystal cell transport unit 102 includes a transport roller unit 80 and a suction plate. The liquid crystal cell P is transported downstream of the production line by rotating the transport roller 80 or by transferring the suction plate. In the bonding process of the 1st polarizing film 131, the 1st liquid crystal cell conveyance part 102 is controlled by the 1st drive control part 110 mentioned later, and conveys the liquid crystal cell P to the bonding position of the 1st bonding part 103. FIG.

第１キャリアフィルム搬送部１０１は、粘着剤を含む帯状の第１偏光フィルムが当該粘着剤を介して積層されている第１キャリアフィルム１２を搬送する。本実施形態では、第１キャリアフィルム搬送部１０１は、第１ロール１から第１積層光学フィルム１１を繰り出し、帯状の第１偏光フィルムを所定間隔で切断して第１偏光フィルム１３１を第１キャリアフィルム１２上に形成するための第１切断部２０を有する。この第１偏光フィルム１３１は後述する第１剥離部４０で第１キャリアフィルムから剥離されて第１貼合部１０３に供給される。そのために、第１キャリアフィルム搬送部１０１は、第１切断部２０、第１ダンサーロール３０（張力調整部の一例）、第１巻取部６０を有する。なお、第１キャリアフィルム搬送部１０１は、第１剥離部４０よりも搬送上流側または搬送下流側に第１キャリアフィルム１２（第１積層光学フィルム１１）を搬送するフィードロール（不図示）を適宜有していてもよい。   The 1st carrier film conveyance part 101 conveys the 1st carrier film 12 with which the strip | belt-shaped 1st polarizing film containing an adhesive is laminated | stacked through the said adhesive. In this embodiment, the 1st carrier film conveyance part 101 unwinds the 1st lamination | stacking optical film 11 from the 1st roll 1, cut | disconnects a strip | belt-shaped 1st polarizing film at predetermined intervals, and makes the 1st polarizing film 131 a 1st carrier. It has the 1st cutting part 20 for forming on the film 12. FIG. This 1st polarizing film 131 is peeled from the 1st carrier film by the 1st peeling part 40 mentioned later, and is supplied to the 1st bonding part 103. FIG. For this purpose, the first carrier film transport unit 101 includes a first cutting unit 20, a first dancer roll 30 (an example of a tension adjusting unit), and a first winding unit 60. The first carrier film transport unit 101 appropriately includes a feed roll (not shown) that transports the first carrier film 12 (first laminated optical film 11) to the transport upstream side or transport downstream side of the first peeling unit 40. You may have.

第１切断部２０は、吸着部２１で第１キャリアフィルム１２側から第１積層光学フィルム１１を固定しながら、帯状の第１偏光フィルムを液晶セルＰに対応する大きさに切断し、第１キャリアフィルム１２上に第１偏光フィルム１３１を形成する。第１切断部２０としては、例えばカッター、レーザー装置などが挙げられる。   The first cutting unit 20 cuts the strip-shaped first polarizing film into a size corresponding to the liquid crystal cell P while fixing the first laminated optical film 11 from the first carrier film 12 side by the adsorption unit 21, A first polarizing film 131 is formed on the carrier film 12. Examples of the first cutting unit 20 include a cutter and a laser device.

第１ダンサーロール３０は、搬送過程、貼合過程などの各過程において、第１キャリアフィルム１２の張力を保持する機能を持つ。この第１ダンサーロール３０により、貼合初期から第１偏光フィルム１３１に張力をより確実に付与できる。第１キャリアフィルム搬送部１０１は、第１ダンサーロール３０を介して第１キャリアフィルム１２を搬送する。   The first dancer roll 30 has a function of maintaining the tension of the first carrier film 12 in each process such as a conveyance process and a bonding process. The first dancer roll 30 can more reliably apply tension to the first polarizing film 131 from the initial stage of bonding. The first carrier film transport unit 101 transports the first carrier film 12 via the first dancer roll 30.

第１剥離部４０は、液晶セルＰに第１偏光フィルム１３１を貼り合せる場合に、その先端で第１キャリアフィルム１２を内側にして折り返して、第１キャリアフィルム１２から第１偏光フィルム１３１（粘着剤を含む）を剥離する。本実施形態では、第１剥離部４０としては、先端に先鋭ナイフエッジ部を用いているが、これに限定されるものではない。   When the first polarizing film 131 is bonded to the liquid crystal cell P, the first peeling portion 40 is folded back with the first carrier film 12 inside at the tip, and the first polarizing film 131 (adhesive) (Including the agent). In the present embodiment, the first peeling portion 40 uses a sharp knife edge portion at the tip, but is not limited thereto.

第１巻取部６０は、巻取ローラ６０ａを有し、第１偏光フィルム１３１が剥離された第１キャリアフィルム１２を巻取ローラ６０ａに巻き取る。本実施形態では、第１偏光フィルム１３１の貼合期間（過程）において、第１巻取部６０による第１キャリアフィルム１２の巻取速度Ｖ１（ｔ）は、第１偏光フィルム１３１が剥離されたキャリアフィルムの搬送速度に相当する。第１巻取部６０は、後述する第１駆動制御部１１０によって駆動制御（駆動開始、停止、回転速度など）される。第１駆動制御部１１０は、例えば、第１巻取部６０の巻取ローラ６０ａを回転駆動するモータＭ１を制御する。   The first winding unit 60 includes a winding roller 60a, and winds the first carrier film 12 from which the first polarizing film 131 has been peeled off on the winding roller 60a. In this embodiment, in the bonding period (process) of the 1st polarizing film 131, the winding speed V1 (t) of the 1st carrier film 12 by the 1st winding part 60 was the 1st polarizing film 131 peeled. It corresponds to the conveyance speed of the carrier film. The first winding unit 60 is drive-controlled (drive start, stop, rotation speed, etc.) by a first drive control unit 110 described later. For example, the first drive control unit 110 controls the motor M1 that rotationally drives the winding roller 60a of the first winding unit 60.

第１貼合部１０３は、まず、第１剥離部４０で剥離された第１偏光フィルム１３１の前端部を液晶セルＰの前端部に貼り合せる。次いで、第１貼合部１０３は、第１キャリアフィルム１２の搬送開始よりも先に、液晶セルＰを搬送しながら、前端部が貼り合わされた第１偏光フィルム１３１の当該前端部以降の部分を液晶セルＰに貼り合せて、液晶表示パネルを形成する。本実施形態では、第１貼合部１０３は、第１貼合ローラ５０ａ、第１駆動ローラ５０ｂで構成される。第１偏光フィルム１３１の貼合期間（過程）において、第１駆動ローラ（受けローラ）５０ｂの回転速度は、貼合速度Ｖ２（ｔ）に相当し、第１駆動ローラ５０ｂは、後述する駆動制御部１１０によって駆動制御（駆動開始、停止、回転速度など）される。なお、第１駆動ローラ５０ｂの駆動に応じて、第１貼合ローラ５０ａが従動する機構であるが、これに制限されず、駆動と従動が逆の機構でもよく、両方が駆動機構であってもよい。第１駆動制御部１１０は、例えば、第１駆動ローラ５０ｂを回転駆動するモータＭ２を制御する。   The first bonding unit 103 first bonds the front end portion of the first polarizing film 131 peeled off at the first peeling portion 40 to the front end portion of the liquid crystal cell P. Then, the 1st bonding part 103 is the part after the said front-end part of the 1st polarizing film 131 in which the front-end part was bonded, conveying the liquid crystal cell P, before the conveyance start of the 1st carrier film 12. A liquid crystal display panel is formed by bonding to the liquid crystal cell P. In this embodiment, the 1st bonding part 103 is comprised by the 1st bonding roller 50a and the 1st drive roller 50b. In the bonding period (process) of the first polarizing film 131, the rotation speed of the first driving roller (receiving roller) 50b corresponds to the bonding speed V2 (t), and the first driving roller 50b is driven control described later. Drive control (drive start, stop, rotation speed, etc.) is performed by the unit 110. In addition, although it is a mechanism in which the 1st bonding roller 50a follows according to the drive of the 1st drive roller 50b, it is not restrict | limited to this, The mechanism in which a drive and a follow are reverse may be sufficient, and both are drive mechanisms. Also good. For example, the first drive control unit 110 controls the motor M2 that rotationally drives the first drive roller 50b.

第１巻取部６０による第１キャリアフィルム１２の巻き取りで（または、不図示の上記フィードローラによって）、第１偏光フィルム１３１が貼合位置Ｑに送り込まれる。一方、第１駆動ローラ５０ｂおよび第１貼合ローラ５０ａの回転によって液晶セルＰが搬送され、貼り合せが開始される。   The first polarizing film 131 is fed into the bonding position Q by winding the first carrier film 12 by the first winding unit 60 (or by the feed roller (not shown)). On the other hand, the liquid crystal cell P is conveyed by the rotation of the first driving roller 50b and the first bonding roller 50a, and bonding is started.

このとき、第１偏光フィルム１３１には、第１巻取部６０（または上記フィードローラ）による送り込み作用と、第１駆動ローラ５０ｂと第１貼合ローラ５０ａとで挟まれることで引き込まれる引き込み作用が生じている。ここで、装置制御の不安定さ等により送り込み作用の方が大きくなると、第１偏光フィルム１３１が弛んだり、第１偏光フィルム１３１に掛かる張力が不安定になることが懸念される。そこで、本実施形態では、第１巻取部６０（巻取速度Ｖ１）と第１貼合部５０（貼合速度Ｖ２）を以下のように制御することで上記課題を解決する。   At this time, the first polarizing film 131 is fed by the first winding unit 60 (or the feed roller) and is drawn by being sandwiched between the first driving roller 50b and the first laminating roller 50a. Has occurred. Here, if the feeding action becomes larger due to instability of the apparatus control or the like, there is a concern that the first polarizing film 131 is loosened or the tension applied to the first polarizing film 131 becomes unstable. Then, in this embodiment, the said subject is solved by controlling the 1st winding part 60 (winding speed V1) and the 1st bonding part 50 (bonding speed V2) as follows.

第１駆動制御部１１０は、第１キャリアフィルム搬送部１０１による第１キャリアフィルム１２の搬送開始よりも先に、液晶セルＰに前端部が貼り合された第１偏光フィルム１３１の液晶セルＰに対する第１貼合部５０による貼合開始が実行されるように、貼合部５０を駆動制御し、かつ第１キャリアフィルム搬送部１０１を駆動制御する。本実施形態では、第１駆動制御部１１０は、前述の第１巻取部６０および第１駆動ロール５０ｂをそれぞれ制御し、第１偏光フィルム１３１の貼合処理期間における、第１キャリアフィルム１２の巻取速度Ｖ１（キャリアフィルムの搬送速度、偏光フィルムの送込速度）、液晶セルＰへ第１偏光フィルム１３１を貼り合せる貼合速度Ｖ２（液晶セルの搬送速度、偏光フィルムの引込速度）を駆動制御する。図３に、貼合処理の全期間における巻取速度Ｖ１、貼合速度Ｖ２の速度関係について示す。   The first drive control unit 110 applies the liquid crystal cell P to the first polarizing film 131 whose front end is bonded to the liquid crystal cell P before the first carrier film transport unit 101 starts transporting the first carrier film 12. The bonding unit 50 is driven and controlled, and the first carrier film transport unit 101 is driven and controlled so that the bonding start by the first bonding unit 50 is executed. In this embodiment, the 1st drive control part 110 controls the above-mentioned 1st winding part 60 and the 1st drive roll 50b, respectively, and the bonding process period of the 1st polarizing film 131 of the 1st carrier film 12 is carried out. Winding speed V1 (carrier film conveying speed, polarizing film feeding speed), and bonding speed V2 (liquid crystal cell conveying speed, polarizing film drawing speed) for bonding the first polarizing film 131 to the liquid crystal cell P are driven. Control. In FIG. 3, it shows about the speed relationship of the winding speed V1 in the whole period of a bonding process, and the bonding speed V2.

図３において、剥離開始の期間は、第１キャリアフィルム１２から第１偏光フィルム１３１の先端が剥離開始され、第１偏光フィルム１３１が貼合位置へ送られる（図２Ａ参照、Ｖ１＞０）。このとき巻取ローラ６０ａによって、または第１剥離部４０より搬送上流側あるいは搬送下流側のフィードローラによって、第１偏光フィルム１３１が貼合位置に送られる。第１偏光フィルム１３１は、貼合位置Ｑに到達し一旦送り込みが停止する（巻取ロール６０ａを停止する（図２Ｂ参照、Ｖ１＝０）。   In FIG. 3, during the peeling start period, the leading edge of the first polarizing film 131 starts to peel from the first carrier film 12, and the first polarizing film 131 is sent to the bonding position (see FIG. 2A, V1> 0). At this time, the first polarizing film 131 is sent to the bonding position by the winding roller 60a or by the feed roller on the upstream side or downstream side of the transport from the first peeling unit 40. The first polarizing film 131 reaches the bonding position Q and temporarily stops feeding (the winding roll 60a is stopped (see FIG. 2B, V1 = 0)).

次いで、貼合処理が開始される。まず、第１貼合ローラ５０ａが第１偏光フィルム１３１の前端部を上方から押さえるようにして液晶セルＰの前端部に貼り合せる。次いで、貼合初期において、貼合開始時点Ｔ１で巻取ロール６０ａを回転させるよりも先に、第１駆動ローラ５０ｂと第１貼合ローラ５０ａを回転させ、これらロール間に第１偏光フィルム１３１および液晶セルＰを挟みながら搬送し、第１偏光フィルム１３１を液晶セルＰ面に貼り合せる（図２Ｃ参照）。   Then, the bonding process is started. First, the first bonding roller 50a is bonded to the front end portion of the liquid crystal cell P so as to press the front end portion of the first polarizing film 131 from above. Next, at the initial stage of bonding, the first driving roller 50b and the first bonding roller 50a are rotated before the winding roll 60a is rotated at the bonding start time T1, and the first polarizing film 131 is interposed between these rolls. Then, the first polarizing film 131 is bonded to the surface of the liquid crystal cell P with the liquid crystal cell P being sandwiched (see FIG. 2C).

その後、巻取開始時点Ｔ２で巻取ロール６０ａを回転させて第１キャリアフィルム１２を搬送させ、第１偏光フィルム１３１を送り出す（Ｖ１＞０）。次いで、貼合中期において、巻取速度と貼合速度とを同期（一致）させる（Ｖ１＝Ｖ２）。   Then, the winding roll 60a is rotated at the winding start time T2, the first carrier film 12 is conveyed, and the first polarizing film 131 is sent out (V1> 0). Next, in the middle stage of bonding, the winding speed and the bonding speed are synchronized (matched) (V1 = V2).

次いで、貼合終期において、現時点で貼り合わせられている第１偏光フィルム１３１が第１キャリアフィルム１２から完全に剥離完了し、その後、巻取ロール６０ａを停止させるために速度差発生時点Ｔ４で巻取速度Ｖ１を減速し、貼合完了前に巻取ロール６０ａの回転を停止する（Ｖ１＝０、図２Ｄ参照）。その後、第１駆動ロール５０ｂの回転を減速（貼合速度Ｖ２を減速）させつつ、液晶セルＰへの第１偏光フィルム１３１の貼合を完了させる（図２Ｅ参照）。貼合完了後に第１駆動ロール５０ｂの回転を停止する（Ｖ２＝０）。その後、次の貼合準備に移行する。   Next, at the final stage of bonding, the first polarizing film 131 bonded at the present time is completely peeled off from the first carrier film 12, and then wound at a speed difference generation time T4 in order to stop the winding roll 60a. The take-up speed V1 is decelerated and the rotation of the take-up roll 60a is stopped before the bonding is completed (V1 = 0, see FIG. 2D). Then, bonding of the 1st polarizing film 131 to the liquid crystal cell P is completed, decelerating rotation of the 1st drive roll 50b (deceleration of bonding speed V2) (refer FIG. 2E). After the bonding is completed, the rotation of the first drive roll 50b is stopped (V2 = 0). Then, it moves to the next bonding preparation.

また、別実施形態として、第１駆動制御部１１０は、貼合開始から貼合完了時点までの間にある途中の時点から、第１キャリアフィルム１２から第１偏光フィルム１３１が剥離し終える剥離完了時点まで貼合速度と巻取速度とを同期させてもよい。また、第１駆動制御部１１０は、少なくとも貼合完了直前にはＶ２＞Ｖ１の速度関係になるように駆動制御してもよい。   Moreover, as another embodiment, the 1st drive control part 110 is the completion of peeling from which the 1st polarizing film 131 finishes peeling from the 1st carrier film 12 from the middle point between the bonding start and the bonding completion time. The pasting speed and the winding speed may be synchronized up to the time point. Further, the first drive control unit 110 may perform drive control so that the speed relationship of V2> V1 is satisfied at least immediately before the completion of bonding.

また、第１駆動制御部１１０は、貼合開始時点Ｔ１から貼合完了時点Ｔ５まで、貼合速度Ｖ２がゼロより大きくなるように第１駆動ローラ５０ｂを駆動制御し、かつ、貼合完了前に巻取速度Ｖ１をゼロにするように第１巻取部６０の巻取ロール６０ａを駆動制御する。第１駆動制御部１１０は、次の貼合開始時点直前において、Ｖ２（ｔ）＝０、Ｖ１（ｔ）＝０になるように、第１駆動ローラ５０ｂおよび第１巻取部６０の巻取ロール６０ａを駆動制御する。   Moreover, the 1st drive control part 110 carries out drive control of the 1st drive roller 50b from pasting start time T1 to pasting completion time T5 so that pasting speed V2 may become larger than zero, and before pasting completion The winding roll 60a of the first winding unit 60 is driven and controlled so that the winding speed V1 is zero. The first drive control unit 110 winds the first drive roller 50b and the first winding unit 60 so that V2 (t) = 0 and V1 (t) = 0 immediately before the next bonding start time. The roll 60a is driven and controlled.

また、第１駆動制御部１１０は、第１巻取部６０に代わり（又は第１巻取部６０に加えて）、第１剥離部４０よりも搬送下流側で第１巻取部６０より上流側に設置されたフィードローラ（不図示）を制御することで、第１キャリアフィルム１２の搬送速度を制御するように構成してもよい。   In addition, the first drive control unit 110 replaces the first winding unit 60 (or in addition to the first winding unit 60), and is upstream of the first winding unit 60 on the downstream side of the first peeling unit 40. You may comprise so that the conveyance speed of the 1st carrier film 12 may be controlled by controlling the feed roller (not shown) installed in the side.

また、第１駆動制御部１１０は、第１巻取部６０に代わり（又は第１巻取部６０に加えて）、第１剥離部４０よりも搬送上流側に設置されたフィードローラ（不図示）を制御することで、第１キャリアフィルム１２の搬送速度を制御するように構成してもよい。   Further, the first drive control unit 110 replaces the first winding unit 60 (or in addition to the first winding unit 60), and a feed roller (not shown) installed upstream of the first peeling unit 40. ) May be controlled to control the conveyance speed of the first carrier film 12.

第１駆動制御部１１０は、専用装置、専用回路で構成されていてもよく、コンピュータと上記各制御手順を実行するプログラムとの協働作用で構成されていてもよく、ファームウエアで構成されていてもよい。   The first drive control unit 110 may be configured by a dedicated device or a dedicated circuit, may be configured by a cooperative action of a computer and a program that executes each of the above control procedures, or configured by firmware. May be.

（第２液晶セル搬送部）
第２液晶セル搬送部１０４は、第１貼合部１０３により第１偏光フィルム１３１が貼り合せられた液晶セルＰを搬送して第２貼合部に供給する。第２液晶セル搬送部１０４には、第１偏光フィルム１３１が貼り合せられた液晶セルＰを９０°水平回転させる回転機構（不図示）と、第１偏光フィルム１３１が貼り合せられた液晶セルＰを上下反転させる反転機構が備えられている。 (Second liquid crystal cell transfer unit)
The 2nd liquid crystal cell conveyance part 104 conveys the liquid crystal cell P with which the 1st polarizing film 131 was bonded by the 1st bonding part 103, and supplies it to a 2nd bonding part. The second liquid crystal cell transport unit 104 includes a rotation mechanism (not shown) for horizontally rotating the liquid crystal cell P to which the first polarizing film 131 is bonded by 90 °, and the liquid crystal cell P to which the first polarizing film 131 is bonded. Is provided with a reversing mechanism for vertically reversing.

前述したように、液晶セルＰの他方面に偏光フィルムを貼り合せるための各種手段は、上記で説明した各種手段、装置等を用いることができる。第２キャリアフィルム搬送部は、第１キャリアフィルム搬送部と同様の装置で構成でき、第２貼合部は、第１貼合部と同様の装置で構成できる。例えば、第２ダンサーロールは第１ダンサーロール３０と同様の装置で構成でき、第２巻取部は第１巻取部６０と同様の装置で構成でき、第２貼合ローラおよび第２駆動ローラは第１貼合ローラ５０ａおよび第１駆動ローラ５０ｂと同様の機構で構成できる。また、第２駆動制御部は第１駆動制御部１１０と同様の機能を有して構成される。   As described above, the various means and devices described above can be used as various means for attaching the polarizing film to the other surface of the liquid crystal cell P. A 2nd carrier film conveyance part can be comprised with the apparatus similar to a 1st carrier film conveyance part, and a 2nd bonding part can be comprised with the apparatus similar to a 1st bonding part. For example, the second dancer roll can be configured with the same device as the first dancer roll 30, the second winding unit can be configured with the same device as the first winding unit 60, the second laminating roller and the second driving roller. Can be configured by the same mechanism as the first laminating roller 50a and the first driving roller 50b. The second drive control unit is configured to have the same function as the first drive control unit 110.

光学表示パネル搬送部（不図示）は、搬送ローラや吸着プレート等で構成でき、第２貼合部により作製された液晶表示パネルＹを下流へ搬送する。また、搬送下流側に、液晶表示パネルＹを検査するための検査装置が設置されていてもよい。この検査装置の検査目的、検査方法は特に制限されない。   The optical display panel transport unit (not shown) can be composed of a transport roller, a suction plate, etc., and transports the liquid crystal display panel Y produced by the second bonding unit downstream. An inspection device for inspecting the liquid crystal display panel Y may be installed on the downstream side of the conveyance. The inspection purpose and inspection method of this inspection apparatus are not particularly limited.

（連続製造方法）
本実施形態に係る光学表示パネルの連続製造方法は、 粘着剤を含む光学フィルムが当該粘着剤を介して積層されているキャリアフィルムを搬送するキャリアフィルム搬送工程と、
前記キャリアフィルム搬送工程により搬送された前記キャリアフィルムを内側にして折り返して当該キャリアフィルムから前記光学フィルムを剥離する剥離工程と、
前記剥離工程により剥離された前記光学フィルムの前端部を光学セルの前端部に貼り合せる前端部貼合工程と、
前記キャリアフィルム搬送工程による前記キャリアフィルムの搬送開始よりも先に、前記前端部が貼り合された前記光学フィルムの前記前端部以降の部分の前記光学セルへの貼合開始が実行されるように、光学セルを搬送しながら、前記剥離工程で前記キャリアフィルムから剥離された前記光学フィルムを前記粘着剤を介して該光学セルに貼り合せて光学表示パネルを形成する貼合工程と、を含む。 (Continuous manufacturing method)
The continuous manufacturing method of the optical display panel according to the present embodiment includes a carrier film transporting process for transporting a carrier film in which an optical film containing a pressure-sensitive adhesive is laminated via the pressure-sensitive adhesive,
A peeling step of peeling the optical film from the carrier film by folding the carrier film conveyed by the carrier film conveying step inside;
A front end portion bonding step of bonding the front end portion of the optical film peeled by the peeling step to the front end portion of the optical cell;
Prior to the start of conveyance of the carrier film in the carrier film conveyance step, the bonding start to the optical cell of the portion after the front end of the optical film on which the front end is bonded is performed. A bonding step of forming an optical display panel by bonding the optical film peeled from the carrier film in the peeling step to the optical cell via the adhesive while transporting the optical cell.

前記貼合工程は、前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの間にある途中の時点から所定の期間、該光学フィルムが剥離されたキャリアフィルムの搬送速度を前記光学フィルムの該光学セルへの貼合速度に一致させる。また、別実施形態として、記貼合工程は、前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの途中の時点から所定の期間、該キャリアフィルムの搬送速度を前記貼合速度よりも大きくさせる。   In the pasting step, the optical film was peeled off for a predetermined period from a point in the middle between the pasting start time at which the optical film was pasted on the optical cell to the pasting time at which the pasting was completed. The conveyance speed of the carrier film is matched with the bonding speed of the optical film to the optical cell. As another embodiment, the notifying step includes the carrier film for a predetermined period from a point in the middle from the start of bonding to the completion of bonding to the bonding completion time from the start of bonding of the optical film to the optical cell. The conveyance speed is made larger than the pasting speed.

また、液晶セルＰの他方基板にも偏光フィルムを貼り合せる場合には、液晶セルＰの回転および上下反転させる旋回工程を有する。旋回工程は、第１偏光フィルムが貼り合せられた液晶セルＰを９０°水平回転および上下反転させる工程である。なお、旋回工程として、液晶セルＰの長辺と短辺の位置関係が逆転するように、長辺及び短辺のいずれとも平行でない１軸を中心に液晶セルＰを反転させてもよい。そして、第２偏光フィルムを貼り合せる工程は、上記の第１貼合工程と同様である。   In addition, when a polarizing film is bonded to the other substrate of the liquid crystal cell P, the liquid crystal cell P has a turning process of rotating and upside down. The turning step is a step of horizontally rotating the liquid crystal cell P on which the first polarizing film is bonded and turning it upside down. In the turning process, the liquid crystal cell P may be inverted about one axis that is not parallel to either the long side or the short side so that the positional relationship between the long side and the short side of the liquid crystal cell P is reversed. And the process of bonding a 2nd polarizing film is the same as said 1st bonding process.

＜別実施形態＞
上記実施形態では、ロールから繰り出された積層光学フィルムを所定間隔で切断（ハーフカット）するものであったが、本発明はとくにこの構成に制限されない。例えば、ロールから繰り出された積層光学フィルムを欠点検査し、当該検査結果に基づいて欠点を避けるように切断（いわゆるスキップカット）してもよい。また、積層光学フィルムに予め付された欠点情報を読み取り、当該欠点情報に基づいて欠点を避けるように切断してもよい。欠点情報は、欠点位置がわかるようにマーキングしたものでもよい。 <Another embodiment>
In the above embodiment, the laminated optical film fed from the roll is cut (half cut) at a predetermined interval, but the present invention is not particularly limited to this configuration. For example, the laminated optical film fed out from the roll may be inspected for defects and cut (so-called skip cut) so as to avoid the defects based on the inspection results. Moreover, the defect information previously attached | subjected to the laminated optical film may be read, and it may cut | disconnect so that a defect may be avoided based on the said defect information. The defect information may be marked so that the position of the defect can be understood.

また、第１ロールの第１偏光フィルムは予め切断されて第１キャリアフィルムに形成されていてもよい。すなわち、第１ロールとして、いわゆる切り目入り積層光学フィルムのロールを用いてもよい。この場合、第１切断手段及び第２切断手段が不要となるため、タクトタイムを短縮することができる。第２ロールも第１ロールと同様に切り目入り積層光学フィルムのロールであってもよい。   Moreover, the 1st polarizing film of a 1st roll may be cut | disconnected previously, and may be formed in the 1st carrier film. That is, a roll of a so-called cut laminated optical film may be used as the first roll. In this case, the first cutting means and the second cutting means are not necessary, and the tact time can be shortened. Similarly to the first roll, the second roll may be a roll of a laminated optical film with cuts.

また、上記実施形態では、光学セルの両面に光学フィルムを貼り合せていたが、光学セルの片面にのみ光学フィルムを貼り合せるものであってもよい。   Moreover, in the said embodiment, although the optical film was bonded on both surfaces of the optical cell, you may bond an optical film only on the single side | surface of an optical cell.

＜実施例＞
図１の連続製造システムで、偏光フィルム（日東電工株式会社製ＶＥＧ１７２４ＤＵ）を対向配置される無アルカリガラス基板（コーニング製）間に液晶層が封止された構成の長方形状の液晶セルの片側の基板にその長辺側から短辺方向に沿って貼り合せた。実施例および比較例では、貼合速度Ｖ２および巻取速度（偏光フィルムが剥離されたキャリアフィルムの搬送速度）Ｖ１をそれぞれ以下のように設定して貼り合せた。 <Example>
In the continuous production system of FIG. 1, a liquid crystal layer is sealed on one side of a non-alkali glass substrate (manufactured by Corning) on which a polarizing film (VEG1724DU manufactured by Nitto Denko Corporation) is opposed. The substrate was bonded along the short side direction from the long side. In the examples and comparative examples, the bonding speed V2 and the winding speed (conveying speed of the carrier film from which the polarizing film was peeled) V1 were set as follows and bonded.

実施例１は、剥離部で剥離された偏光フィルムの前端部を液晶セルの前端部に貼り合せた上で、貼合開始時点Ｔ１で、巻取ローラより先に第１駆動ローラを回転させて貼合を開始した（Ｖ２＞０）。その後巻取開示時点Ｔ２に巻取ローラを回転させた（Ｖ１＞０）。その後、途中の時点（速度同期点）Ｔ３から貼合終期までＶ１＝Ｖ２とした。速度同期点Ｔ３が初期領域にある。実施例１の速度条件を図４Ａに示す。   In Example 1, after the front end portion of the polarizing film peeled off at the peeling portion was bonded to the front end portion of the liquid crystal cell, the first driving roller was rotated before the winding roller at the bonding start time T1. Bonding was started (V2> 0). Thereafter, the winding roller was rotated at the winding disclosure time T2 (V1> 0). Then, it was set to V1 = V2 from the halfway point (speed synchronous point) T3 to the end of pasting. The speed synchronization point T3 is in the initial region. The speed condition of Example 1 is shown in FIG. 4A.

実施例２は、速度同期点Ｔ３が貼合中期の立ち上がり位置であること以外、実施例１と同様である。実施例２の速度条件を図４Ｂに示す。   Example 2 is the same as Example 1 except that the speed synchronization point T3 is a rising position in the middle of bonding. The speed condition of Example 2 is shown in FIG. 4B.

実施例３は、速度同期点Ｔ３が貼合中期の立ち上がり終点であること以外、実施例１と同様である。実施例３の速度条件を図４Ｃに示す。   Example 3 is the same as Example 1 except that the speed synchronization point T3 is a rising end point in the middle of bonding. The speed condition of Example 3 is shown in FIG. 4C.

実施例４は、貼合開始時点Ｔ１で、巻取ローラより先に第１駆動ローラを回転させて貼合を開始した（Ｖ２＞０）。その後巻取開示時点Ｔ２に巻取ローラを回転させた（Ｖ１＞０）。その後、貼合中期でＶ１＞Ｖ２とし、その後、貼合終期において（途中の時点Ｔ３）Ｖ１＝Ｖ２とした。実施例４の速度条件を図４Ｄに示す。   In Example 4, at the bonding start time T1, the first drive roller was rotated before the winding roller to start bonding (V2> 0). Thereafter, the winding roller was rotated at the winding disclosure time T2 (V1> 0). Then, it was set as V1> V2 in the middle stage of pasting, and it was set as V1 = V2 in the pasting final stage (halfway time T3). The speed condition of Example 4 is shown in FIG. 4D.

実施例５は、貼合開始時点Ｔ１で、巻取ローラより先に第１駆動ローラを回転させて貼合を開始した（Ｖ２＞０）。その後巻取開示時点Ｔ２に巻取ローラを回転させた（Ｖ１＞０）。その後、貼合中期の立ち上がりでＶ１＞Ｖ２とし、貼合中期でＶ１＜Ｖ２とし、その後、貼合終期において（途中の時点Ｔ３）Ｖ１＝Ｖ２とした。実施例５の速度条件を図４Ｅに示す。   In Example 5, at the bonding start time T1, the first driving roller was rotated before the winding roller to start bonding (V2> 0). Thereafter, the winding roller was rotated at the winding disclosure time T2 (V1> 0). Then, it was set as V1> V2 at the rising of the middle stage of bonding, V1 <V2 at the middle stage of bonding, and then V1 = V2 at the final stage of bonding (intermediate time point T3). The speed condition of Example 5 is shown in FIG. 4E.

比較例１は、貼合開始から貼合終期まで、Ｖ１＝Ｖ２とした。比較例１の速度条件を図５Ａに示す。   In Comparative Example 1, V1 = V2 was set from the start of bonding to the end of bonding. The speed condition of Comparative Example 1 is shown in FIG. 5A.

比較例２は、貼合開始から貼合中期領域終点までＶ１＜Ｖ２とし、貼合終期でＶ１＝Ｖ２とした（速度同期点Ｔ３が中期領域終点である）こと以外、実施例１と同様である。比較例２の速度条件を図５Ｂに示す。   Comparative Example 2 is the same as Example 1 except that V1 <V2 is set from the start of bonding to the end of the intermediate region of the bonding, and V1 = V2 is set at the end of the bonding (speed synchronization point T3 is the end of the intermediate region). is there. The speed condition of Comparative Example 2 is shown in FIG. 5B.

貼合後における偏光フィルムと液晶セルとの間の前方部分（貼合初期に貼り合わされた部分）の気泡の有無を目視検査で評価した。その結果、実施例１から３では気泡発生していなかったが、比較例１、２では気泡が発生することがあった。この実施例および比較例の結果から、偏光フィルムの前端部を液晶セルの前端部に貼り合せた上で、キャリアフィルムの搬送開始よりも先に貼合開始を実行することで、貼合初期から確実に偏光フィルムに張力を掛けることができ、貼合初期に液晶セルと偏光フィルムとの間に生じやすい気泡不良を低減できたことを確認できた。また、巻取速度Ｖ１を貼合速度Ｖ２に早めに同期させた実施例１および２では、液晶表示パネルの反りも低減できたことを確認できた。   The presence or absence of bubbles in the front part (the part pasted at the initial stage of pasting) between the polarizing film and the liquid crystal cell after pasting was evaluated by visual inspection. As a result, bubbles were not generated in Examples 1 to 3, but bubbles were sometimes generated in Comparative Examples 1 and 2. From the results of this example and the comparative example, after bonding the front end portion of the polarizing film to the front end portion of the liquid crystal cell, by performing the bonding start prior to the start of the conveyance of the carrier film, It was confirmed that tension could be applied to the polarizing film with certainty, and bubble defects that were likely to occur between the liquid crystal cell and the polarizing film could be reduced in the initial stage of bonding. Moreover, in Example 1 and 2 which made the winding speed V1 synchronize early with the bonding speed V2, it has confirmed that the curvature of the liquid crystal display panel could also be reduced.

１１ 第１積層光学フィルム
１２ 第１キャリアフィルム
１３１ 第１偏光フィルム（光学フィルムの一例）
３０ 第１ダンサーロール
４０ 第１剥離部
５０ａ 第１貼合ローラ
５０ｂ 第１駆動ローラ
６０ 第１巻取部
６０ａ 巻取ローラ
１０１ 第１キャリアフィルム搬送部
１０２ 第１液晶セル搬送部
１０３ 第１貼合部
１１０ 第１駆動制御部
Ｐ 液晶セル（光学セルの一例）
Ｙ 液晶表示パネル（光学表示パネルの一例） 11 First laminated optical film 12 First carrier film 131 First polarizing film (an example of an optical film)
30 1st dancer roll 40 1st peeling part 50a 1st bonding roller 50b 1st drive roller 60 1st winding part 60a Winding roller 101 1st carrier film conveyance part 102 1st liquid crystal cell conveyance part 103 1st bonding Unit 110 first drive control unit P liquid crystal cell (an example of an optical cell)
Y liquid crystal display panel (an example of an optical display panel)

Claims (5)

粘着剤を含む光学フィルムが当該粘着剤を介して積層されているキャリアフィルムを搬送するキャリアフィルム搬送工程と、
前記キャリアフィルム搬送工程により搬送された前記キャリアフィルムを内側にして折り返して当該キャリアフィルムから前記光学フィルムを剥離する剥離工程と、
前記剥離工程により剥離された前記光学フィルムの前端部を光学セルの前端部に貼り合せる前端部貼合工程と、
前記キャリアフィルム搬送工程による前記キャリアフィルムの搬送開始よりも先に、前記前端部が貼り合された前記光学フィルムの前記前端部以降の部分の前記光学セルへの貼合開始が実行されるように、光学セルを搬送しながら、前記剥離工程で前記キャリアフィルムから剥離された前記光学フィルムを前記粘着剤を介して該光学セルに貼り合せて光学表示パネルを形成する貼合工程と、を含む光学表示パネルの連続製造方法。 A carrier film transporting step for transporting a carrier film in which an optical film containing an adhesive is laminated via the adhesive;
A peeling step of peeling the optical film from the carrier film by folding the carrier film conveyed by the carrier film conveying step inside;
A front end portion bonding step of bonding the front end portion of the optical film peeled by the peeling step to the front end portion of the optical cell;
Prior to the start of conveyance of the carrier film in the carrier film conveyance step, the bonding start to the optical cell of the portion after the front end of the optical film on which the front end is bonded is performed. A bonding step of forming an optical display panel by bonding the optical film peeled from the carrier film in the peeling step to the optical cell via the adhesive while transporting the optical cell. A continuous manufacturing method for display panels. 前記貼合工程は、前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの間にある途中の時点から所定の期間、該光学フィルムが剥離されたキャリアフィルムの搬送速度を前記光学フィルムの該光学セルへの貼合速度に一致させる、または前記貼合速度よりも大きくさせる、請求項１に記載の光学表示パネルの連続製造方法。   In the pasting step, the optical film was peeled off for a predetermined period from a point in the middle between the pasting start time at which the optical film was pasted on the optical cell to the pasting time at which the pasting was completed. The continuous manufacturing method of the optical display panel of Claim 1 which makes the conveyance speed of a carrier film correspond to the bonding speed to the said optical cell of the said optical film, or makes it larger than the said bonding speed. 粘着剤を含む光学フィルムが当該粘着剤を介して積層されているキャリアフィルムを搬送するキャリアフィルム搬送部と、
前記キャリアフィルム搬送部により搬送されたキャリアフィルムを内側にして折り返して当該キャリアフィルムから前記光学フィルムを剥離する剥離部と、
前記剥離部で剥離された前記光学フィルムの前端部を光学セルの前端部に貼り合せ、かつ、光学セルを搬送しながら、前記キャリアフィルムから剥離された前記光学フィルムを前記粘着剤を介して該光学セルに貼り合せて光学表示パネルを形成する貼合部と、
前記キャリアフィルム搬送部による前記キャリアフィルムの搬送開始よりも先に、前記貼合部による前記前端部が貼り合された前記光学フィルムの前記前端部以降の部分の前記光学セルへの貼合開始が実行されるように、該貼合部を駆動制御し、かつ該キャリアフィルム搬送部を駆動制御する駆動制御部と、を有する光学表示パネルの連続製造システム。 A carrier film transport unit that transports a carrier film in which an optical film containing an adhesive is laminated via the adhesive;
A peeling part for turning the carrier film conveyed by the carrier film conveying part inside and peeling the optical film from the carrier film;
The front end portion of the optical film peeled off at the peeling portion is bonded to the front end portion of the optical cell, and the optical film peeled off from the carrier film is conveyed through the adhesive while transporting the optical cell. A bonding part that forms an optical display panel by bonding to an optical cell;
Prior to the start of conveyance of the carrier film by the carrier film conveyance unit, the bonding start to the optical cell of the portion after the front end of the optical film to which the front end by the bonding unit is bonded is performed. A continuous production system for an optical display panel, comprising: a drive control unit that drives and controls the laminating unit and drives and controls the carrier film conveyance unit. 前記キャリアフィルム搬送部が、前記剥離部よりも上流側に、キャリアフィルムの搬送時の張力を調整する張力調整部を有する、請求項３に記載の光学表示パネルの連続製造システム。   The continuous manufacturing system of the optical display panel according to claim 3, wherein the carrier film transport unit includes a tension adjusting unit that adjusts a tension during transport of the carrier film on the upstream side of the peeling unit. 前記駆動制御部が、
前記光学フィルムを前記光学セルに貼り合せ始める貼合開始時点から貼り合せ完了する貼合完了時点までの間にある途中の時点から所定の期間、前記キャリアフィルム搬送部による前記該光学フィルムが剥離されたキャリアフィルムの搬送速度を前記貼合部による前記光学フィルムの前記光学セルへの貼合速度に一致させるように、または前記貼合速度よりも大きくなるように、該貼合部および該キャリアフィルム搬送部を駆動制御する、請求項３または４に記載の光学表示パネルの連続製造システム。 The drive control unit is
The optical film is peeled off by the carrier film transport unit for a predetermined period from a point in the middle between the start of bonding and the completion of bonding after the start of bonding the optical film to the optical cell. The bonding part and the carrier film so that the conveying speed of the carrier film matches the bonding speed of the optical film to the optical cell by the bonding part or larger than the bonding speed. The continuous manufacturing system of the optical display panel according to claim 3 or 4, wherein the transport unit is driven and controlled.
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