WO2013133261A1 - 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 - Google Patents

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 Download PDF

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Publication number
WO2013133261A1
WO2013133261A1 PCT/JP2013/055966 JP2013055966W WO2013133261A1 WO 2013133261 A1 WO2013133261 A1 WO 2013133261A1 JP 2013055966 W JP2013055966 W JP 2013055966W WO 2013133261 A1 WO2013133261 A1 WO 2013133261A1
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WIPO (PCT)
Prior art keywords
optical
film
bonding
carrier film
speed
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PCT/JP2013/055966
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English (en)
French (fr)
Japanese (ja)
Inventor
和也 秦
梅本　清司
Original Assignee
日東電工株式会社
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Priority to CN201380004348.1A priority Critical patent/CN103999142B/zh
Priority to KR1020147018863A priority patent/KR101774631B1/ko
Publication of WO2013133261A1 publication Critical patent/WO2013133261A1/ja

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • 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
    • 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
    • B29C63/02—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

Definitions

  • 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.
  • 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.
  • the bonding start timing for example, the rotation start timing of the bonding roll
  • the carrier film conveyance start timing for example, the winding roll is rotated
  • the continuous manufacturing method of the optical display panel of the present invention is as follows.
  • 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.
  • 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.
  • 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.
  • 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.
  • the laminating speed and the conveying speed of the carrier film are matched between the midway point and the peeling completion time point.
  • 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.
  • 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.
  • 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;
  • 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 drive control unit that drives and controls the laminating unit and drives and controls the carrier film transport unit.
  • the carrier film transport unit has a tension adjusting unit that adjusts a tension during transport of the carrier film on the upstream side of the peeling unit.
  • 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.
  • the drive control unit is The optical film by the carrier film transport part was peeled off for a predetermined period from a point in the middle between the start of bonding and the completion of bonding until the optical cell was bonded 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 3 is a diagram illustrating speed conditions according to the first embodiment.
  • FIG. 6 is a diagram illustrating speed conditions of the second embodiment.
  • FIG. 6 is a diagram illustrating speed conditions of Example 3.
  • FIG. 6 is a diagram illustrating speed conditions of Example 4.
  • FIG. 10 is a diagram illustrating speed conditions of Example 5. The figure which shows the speed conditions of the comparative example 1. The figure which shows the speed conditions of the comparative example 2.
  • FIG. 3 is a diagram illustrating speed conditions according to the first embodiment.
  • FIG. 6 is a diagram illustrating speed conditions of the second embodiment.
  • FIG. 6 is a diagram illustrating speed conditions of Example 3.
  • FIG. 6 is a diagram illustrating speed conditions of Example 4.
  • FIG. 10 is a diagram illustrating speed conditions of Example 5.
  • FIG. 3 is a diagram illustrating speed conditions according to the first embodiment.
  • FIG. 6 is a diagram illustrating speed conditions
  • the form in which the optical film is formed on the carrier film is not particularly limited.
  • 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.
  • 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.
  • 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) ).
  • 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.
  • the 1st roll 1 shown in FIG. 1 rolls the 1st laminated
  • the first polarizing film 13 has a film body 13a and an adhesive layer 13b.
  • the polarizing film examples include a polarizer (thickness is about 1.5 to 80 ⁇ m) and a polarizer protective film (thickness is generally about 1 to 500 ⁇ m) on one or both sides of the polarizer as an adhesive or an adhesive. Formed without.
  • a retardation film thickness is generally 10 to 200 ⁇ m
  • the thickness of the laminated optical film is, for example, in the range of 10 ⁇ m to 500 ⁇ m.
  • 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 ⁇ m to 50 ⁇ m, 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.
  • a conventionally known film such as a plastic film (for example, a polyethylene terephthalate film, a polyolefin film, etc.) can be used.
  • 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.
  • the optical display panel is one in which at least an optical film is bonded to one or both sides of an optical cell via an adhesive, and a drive circuit is incorporated as necessary.
  • the optical cell include a liquid crystal cell and an organic EL cell.
  • 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.
  • 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.
  • FIG. 1 is a schematic view of an optical display panel continuous manufacturing system
  • 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.
  • 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).
  • 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.
  • a polarizing film may be attached.
  • the 1st liquid crystal cell conveyance part 102 supplies the liquid crystal cell P to the 1st bonding part 103, and conveys it.
  • 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.
  • 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.
  • the 1st carrier film conveyance part 101 conveys the 1st carrier film 12 in which the beltlike 1st polarizing film containing an adhesive is laminated via the adhesive concerned.
  • the 1st carrier film conveyance part 101 unwinds the 1st lamination
  • 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.
  • 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.
  • 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.
  • 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.
  • the first peeling portion 40 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).
  • the first peeling portion 40 uses a sharp knife edge portion at the tip, but is not limited thereto.
  • 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.
  • 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.
  • the first drive control unit 110 controls the motor M1 that rotationally drives the winding roller 60a of the first winding unit 60.
  • First bonding portion 103 first bonds the front end portion of first polarizing film 131 peeled off by first peeling portion 40 to the front end portion of 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.
  • the 1st bonding part 103 is comprised by the 1st bonding roller 50a and the 1st drive roller 50b.
  • 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.
  • the 1st bonding roller 50a follows according to the drive of the 1st drive roller 50b, it is not restrict
  • the first drive control unit 110 controls the motor M2 that rotationally drives the first drive roller 50b.
  • the first polarizing film 131 is fed to the bonding position Q by winding the first carrier film 12 by the first winding unit 60 (or by the feed roller (not shown)).
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • bonding speed V2 liquid crystal cell conveying speed, polarizing film drawing speed
  • 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).
  • 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 bonding process is started.
  • 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.
  • 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.
  • 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).
  • the winding roll 60a is rotated to convey the first carrier film 12, and the first polarizing film 131 is sent out (V1> 0).
  • 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.
  • 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).
  • 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.
  • 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.
  • 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 roll 60a is driven and controlled.
  • 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.
  • 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.
  • 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.
  • 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.
  • a 2nd carrier film conveyance part can be comprised with the apparatus similar to a 1st carrier film conveyance part
  • a 2nd bonding part can be comprised with the apparatus similar to a 1st bonding part.
  • 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.
  • 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.
  • 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.
  • 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.
  • the notifying step includes the carrier film for a predetermined period from a point in time 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.
  • 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.
  • 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.
  • the process of bonding a 2nd polarizing film is the same as said 1st bonding process.
  • 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.
  • 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.
  • subjected to the laminated optical film may be read, and it may cut
  • the defect information may be marked so that the position of the defect can be understood.
  • the first polarizing film of the first roll may be cut in advance and formed on the first 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.
  • the second roll may be a roll of a laminated optical film with cuts.
  • the optical film is bonded to both surfaces of the optical cell, but the optical film may be bonded only to one surface of the optical cell.
  • 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 placed opposite.
  • the substrate was bonded along the short side direction from the long side.
  • 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.
  • the speed condition of Example 1 is shown in FIG. 4A.
  • 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.
  • Example 3 is the same as Example 1 except that the speed synchronization point T3 is the rising end point in the middle of bonding.
  • the speed condition of Example 3 is shown in FIG. 4C.
  • the speed condition of Example 4 is shown in FIG. 4D.
  • the speed condition of Example 5 is shown in FIG. 4E.
  • the speed condition of Comparative Example 1 is shown in FIG. 5A.
  • the speed condition of Comparative Example 2 is shown in FIG. 5B.
  • 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)

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PCT/JP2013/055966 2012-03-06 2013-03-05 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 WO2013133261A1 (ja)

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JP5868733B2 (ja) 2016-02-24
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TWI482698B (zh) 2015-05-01

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