US20100288432A1 - Manufacturing system of optical display device and manufacturing method of optical display device - Google Patents

Manufacturing system of optical display device and manufacturing method of optical display device Download PDF

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Publication number
US20100288432A1
US20100288432A1 US12/811,640 US81164008A US2010288432A1 US 20100288432 A1 US20100288432 A1 US 20100288432A1 US 81164008 A US81164008 A US 81164008A US 2010288432 A1 US2010288432 A1 US 2010288432A1
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United States
Prior art keywords
optical member
optical
excluded
releasing film
sensitive adhesive
Prior art date
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Abandoned
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US12/811,640
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English (en)
Inventor
Kazuo Kitada
Satoru KOSHIO
Takuya NAKAZONO
Tomokazu YURA
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Nitto Denko Corp
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Nitto Denko Corp
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Assigned to NITTO DENKO CORPORATION reassignment NITTO DENKO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KITADA, KAZUO, KOSHIO, SATORU, NAKAZONO, TAKUYA, YURA, TOMOKAZU
Publication of US20100288432A1 publication Critical patent/US20100288432A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
    • B32B37/182—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only one or more of the layers being plastic
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • 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
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/60—In a particular environment
    • B32B2309/65—Dust free, e.g. clean room
    • 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
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • 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
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
    • Y10T156/1168—Gripping and pulling work apart during delaminating
    • Y10T156/1195—Delaminating from release surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/19—Delaminating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/19—Delaminating means
    • Y10T156/195—Delaminating roller means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/19—Delaminating means
    • Y10T156/1994—Means for delaminating from release surface

Definitions

  • the present invention relates to a manufacturing system of an optical display device having an optical display unit, and an optical member bonded onto the optical display unit and having a predetermined size, and a manufacturing method thereof.
  • Patent Document 1 a manufacturing method of Patent Document 1 has been known.
  • this manufacturing method from a material 1 roll in which a sheet product having an optical member is wound, the sheet product is unrolled up, a defect of the sheet product is detected, and then the sheet product is cut based on the detection result to be formed into each sheet product piece. Next, the releasing film thereon is peeled therefrom, and then the optical member is bonded onto a liquid crystal cell.
  • the manufacturing method is a method wherein: without cutting a releasing film in a sheet product, some other optical member (for example, a polarizing plate) therein is cut; this releasing film allows the continuity of the sheet product to be kept; and while this releasing film is peeled, one piece of the optical member is bonded onto an optical display unit (liquid crystal cell) through a pressure-sensitive adhesive interposed therebetween.
  • some other optical member for example, a polarizing plate
  • Patent Document 1 JP-A-2007-140046
  • Patent Document 2 JP-A-2005-37416
  • Patent Document 1 an optical member therein is in the state of a sheet piece obtained by cutting all members of a long sheet product; therefore, a defect inspection thereof can easily be made. Additionally, the optical member judged as a defective member in the defect inspection can easily be excluded. In the meantime, in the case of a method of cutting, without cutting partial members (such as a releasing film) of a sheet product, the other members (the method may be referred to as half cut hereinafter) as in Patent Document 2, an optical member judged as a defective member is not easily excluded.
  • cut optical members are present on a releasing film through a pressure-sensitive adhesive interposed therebetween, and further optical members each judged as a non-defective member are present to be adjacent to optical members each judged as a defective member; therefore, it is very difficult to remove only the optical members judged to be defective so that the members are not bonded onto a liquid crystal cell.
  • An object thereof is to provide a manufacturing system of an optical display device in which the following can be attained in the case of bonding optical members to optical display units, respectively: an optical member to be excluded, which is, for example, an optical member judged as a defective member, can be appropriately excluded so that the optical member is not bonded onto any optical display unit and a manufacturing method of an optical display device.
  • the present invention is a manufacturing system of an optical display device having an optical display unit and an optical member of a predetermined size bonded onto the optical display unit, the system includes:
  • a cutting device to cut an optical member without cutting a releasing film in a long laminated optical product having the optical member and the releasing film laid on the optical member, and thereby form, on the releasing film, the optical member of the predetermined size to be bonded onto the optical display unit and an optical member to be excluded,
  • a peeling device to peel the releasing film from the optical member of the predetermined size formed by the cutting device
  • a bonding device to bond the optical member of the predetermined size onto the optical display unit while or after the releasing film is peeled from the optical member of the predetermined size by the peeling device
  • an excluding device having a pressure-sensitive adhesive surface and excluding, from the releasing film, the optical member to be excluded which is formed by the cutting device by allowing the optical member to be excluded to bond onto the pressure-sensitive adhesive surface.
  • the optical member to be excluded which is cut by the cutting device, is appropriately excluded from the releasing film; thus, without bonding the member onto any optical display unit, only the optical member of the predetermined size can be appropriately bonded onto the optical display unit.
  • the system may be made so as to read defect data (defect position coordinates) attached to an end region of the optical member or the releasing film (the reading is a function of a reading device) at the time of the exclusion, analyze the data, determine the position of a defect, and apply excluding treatment to the defect-containing optical member.
  • the system may also be configured so as to read a defect mark attached to an end region of the optical member (the mark means that a defect is present from the position to which the mark is attached in the width direction of the film), and apply excluding treatment to the mark-containing optical member.
  • the “pressure-sensitive adhesive surface” is, for example, a pressure-sensitive adhesive or a pressure-sensitive adhesive layer formed on a surface of each of a roll, a tape, a flat plate, a warped plate, or the like.
  • the excluding device has a rotatable roller for exclusion around which a pressure-sensitive adhesive tape is wound, and excludes, from the releasing film, the optical member to be excluded which is formed by the cutting device by allowing the optical member to be excluded to bond onto the pressure-sensitive adhesive surface.
  • the system further includes an inspecting device to make a defect inspection of the laminated optical product, wherein the optical member of the predetermined size is a member judged as a non-defective member in the defect inspection by the inspecting device, and the optical member to be excluded is a member judged as a defective member in the defect inspection by the inspecting device.
  • the defect inspection of the optical member can be favorably made without the necessity of considering a retardation inherent in the releasing film, and defects such as foreign substances or scratches bonding to or included in the releasing film. It is allowable to make a defect inspection of the optical member without peeling the releasing film from the laminated optical product.
  • this defect inspection the kind and coordinates of a defect are detected as defect data, and based on the defect data, the optical member is judged as a non-defective member or a defective member.
  • the cutting device has a structure in which the long laminated optical product is cut into a predetermined size which is beforehand set.
  • the optical member is cut at positions which contain the defect and are apart from the position of the defect by a predetermined distance (the distance is set to, for example, about 50 mm, which gives a margin for the cutting positions).
  • the optical product is cut into the predetermined size to avoid the optical member containing the defect.
  • This cutting method is called “skip cut”.
  • the optical member containing the defect, which is judged as a defective product is excluded by the excluding device. In this manner, the yield of optical display devices is largely improved.
  • the excluding device excludes, from the releasing film, the optical member to be excluded, by allowing a surface of the optical member to be excluded, the surface being opposite to the optical member surface onto which the releasing film is bonded, to bond onto the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape.
  • the optical member to be excluded when the surface of the optical member to be excluded that is opposite to the optical member surface onto which the releasing film is bonded is bonded onto the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape (for example, a pressure-sensitive adhesive tape having adhesive strength stronger than the force for peeling the optical member and the releasing film from each other) to exclude the optical member to be excluded, the optical member to be excluded can be appropriately excluded without interrupting the treatment by means of the bonding device for bonding the optical display unit and the optical member onto each other, nor setting an accumulating mechanism between the excluding device and the bonding device.
  • the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape for example, a pressure-sensitive adhesive tape having adhesive strength stronger than the force for peeling the optical member and the releasing film from each other
  • the excluding device excludes the optical member to be excluded at an upstream position relative to the bonding device in the course of carrying the laminated optical product.
  • the productivity is favorably made particularly better.
  • the productivity is largely affected by a time loss based on a matter that the excluding treatment by the excluding device and the bonding treatment by the bonding device are conducted in the same space; thus, when the matter is removed, the productivity is largely improved.
  • the excluding device excludes the optical member to be excluded by pressing the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape wound around the roller for exclusion, onto the optical member to be excluded, at a roll member of a carrying means for carrying the laminated optical product and thereby allowing the optical member to be excluded to bond onto the pressure-sensitive adhesive tape.
  • the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape which is wound around the roller for exclusion, is pressed onto the optical member to be excluded that is positioned at the roll member of the carrying means, thereby bonding the optical member to be excluded onto the pressure-sensitive adhesive tape so that the optical member to be excluded can be appropriately excluded.
  • the structure is preferred.
  • the roll member may be comprised of a single roller, or a plurality of rollers.
  • the carrying direction of the laminated optical member wound around the roll member is changed preferably by less than 180°, more preferably by 120°, even more preferably by a value in the range of 90 to 60° in a state where the releasing film of the laminated optical product is faced inwards.
  • the manufacturing method of an optical display device is a manufacturing method of an optical display device an optical display unit and an optical member of a predetermined size bonded onto the optical display unit, the method includes:
  • Another embodiment has a structure in which the bonding device has a rotatable pushing roller for pressing the optical member toward the optical unit, and by means of the pushing roller, the optical member to be excluded from which the releasing film is peeled is pressed onto the surface of the tape member wound around the roller for exclusion, thereby bonding the optical member to be excluded onto the tape member to be excluded.
  • the tape member may be a tape on which a pressure-sensitive adhesive is formed, and may be a simple tape.
  • the size, the thickness, the material and the like of the tape are not particularly limited. Examples of the tape include various plastic tapes.
  • the tape is preferably comprised of a material capable of being appropriately bonded onto the pressure-sensitive adhesive between the optical member and the releasing film.
  • the pressure-sensitive adhesive layer of the optical member to be excluded from which the releasing film is peeled is pressed onto the surface of the tape member wound around the roller for exclusion, thereby bonding the optical member to be excluded onto the tape member through the pressure-sensitive adhesive layer of the optical member so that the optical member can be favorably excluded.
  • the excluding device is located near the bonding device to make use of a partial function of the bonding device. Thus, the excluding device can be made compact. In this point, the structure is preferred.
  • the tape member may be a tape on which a pressure-sensitive adhesive is formed, and may be a simple tape.
  • the size, the thickness, the material and the like of the tape are not particularly limited. Examples of the tape include various plastic tapes.
  • the tape is preferably comprised of a material capable of being appropriately bonded onto the pressure-sensitive adhesive between the optical member and the releasing film. The use of a tape as the tape member can favorably make costs far lower and make the handling of the member in the use simpler than that of a pressure-sensitive adhesive tape.
  • the excluding device has a peeling means to peel the releasing film from the optical member to be excluded, and
  • a pushing roller for exclusion to press the optical member to be excluded, from which the releasing film is peeled by the peeling means, toward the roller for exclusion
  • the pressure-sensitive adhesive layer of the optical member to be excluded is pressed onto the surface of the tape member wound around the roller for exclusion, thereby bonding the optical member to be excluded onto the tape member to be excluded.
  • the pushing roller for exclusion makes it possible to press the pressure-sensitive adhesive layer of the optical member to be excluded, from which the releasing film is peeled, onto the surface of the tape member wound around the roller for exclusion, thereby bonding the optical member to be excluded onto the tape member to be appropriately excluded.
  • the optical display device of the present invention is, for example, a liquid crystal display device, or an organic EL display device.
  • the liquid crystal display device has, as its optical display unit, a liquid crystal cell.
  • the organic EL display device has, as its optical display unit, an organic EL cell.
  • a defect means, for example, a stain, a scratch, an especial defect in a bruise form, as is twisted, in which a foreign substance is nipped (the defect may be referred as knick), an air bubble, or a foreign substance on a surface of an object or the inside thereof.
  • FIG. 1 A flowchart of a manufacturing method of an optical display device.
  • FIG. 2 A view illustrating an example of a laminated structure of an optical member, a laminated optical member, and an optical display unit.
  • FIG. 3 A view for explaining a device structure of a manufacturing system.
  • FIG. 4 A view for explaining a device structure of the manufacturing system.
  • FIG. 5A A view for explaining a device structure of the manufacturing system.
  • FIG. 5B A view for explaining a device structure of the manufacturing system.
  • FIG. 5C A view for explaining a device structure of the manufacturing system.
  • FIG. 6 A view for explaining a device structure of the manufacturing system.
  • FIG. 7 A view for explaining a device structure of the manufacturing system.
  • FIG. 8 A view for explaining a device structure of the manufacturing system.
  • FIG. 9 A view for explaining a device structure of the manufacturing system.
  • FIG. 10A A view for explaining a device structure of the manufacturing system.
  • FIG. 10B A view for explaining a device structure of the manufacturing system.
  • FIG. 10C A view for explaining a device structure of the manufacturing system.
  • FIG. 11 A view for explaining a device structure of a manufacturing system.
  • FIG. 12A A view for explaining a device structure of a manufacturing system.
  • FIG. 12B A view for explaining a device structure of the manufacturing system.
  • FIG. 12C A view for explaining a device structure of the manufacturing system.
  • FIG. 13 A view for explaining a device structure of a different manufacturing system.
  • FIG. 14A A view for explaining a device structure of a different manufacturing system.
  • FIG. 14B A view for explaining a device structure of the different manufacturing system.
  • FIG. 14C A view for explaining a device structure of the different manufacturing system.
  • FIG. 1 shows a flow chart of a manufacturing method of an optical display device.
  • FIG. 2 shows a schematic view of a sectional structure of first and second laminated optical products F 1 and F 2 , first and second optical members F 11 and F 22 , and a liquid crystal cell W (optical display unit).
  • FIG. 3 shows an example of an arrangement plan view of a manufacturing system of an optical display device in Embodiment 1 of FIG. 1 .
  • FIGS. 4 to 10C are each a view for explaining an example of the manufacturing system of an optical display device in Embodiment 1.
  • Embodiment 1 may have a structure of excluding an optical member judged to contain a defect at a position where the optical member is bonded onto an optical display unit, or may have a structure of excluding the optical member at the upstream side relative to the bonding position. For example, a case where an optical member is excluded for the purpose of sampling for process-inspection, sampling for quality-inspection, or the like is also illustrated, as well as a case where an optical member judged to contain a defect is excluded.
  • Examples of the optical member, which is bonded onto the optical display unit include a polarizer film, a retardation film, a viewing angle compensating film and a brightness enhancement film; and any combination of two or more of these films.
  • a transparent film for protection may be laminated on one surface or both surfaces of anyone of these optical members.
  • the second laminated optical product F 2 also has the same structure. The structure of the first laminated optical product F 1 may be different from that of the second laminated optical product F 2 .
  • the first laminated optical product F 1 has a laminated structure having a first optical member F 11 , a releasing film F 12 , and a surface protecting member F 13 .
  • the first optical member F 11 is comprised of a first polarizer F 11 a , a first polarizer protecting film F 11 b on one surface thereof through an adhesive layer (not illustrated) interposed therebetween, and a second polarizer protecting film F 11 c on the other surface thereof through an adhesive layer (not illustrated) interposed therebetween.
  • a laminated structure comprised of a polarizer and a polarizer protecting film may be referred as a polarizing plate.
  • the first and second polarizer protecting films F 11 b and F 11 c may each be, for example, a triacetylcellulose (TAC) film or a polyethylene terephthalate (PET) film.
  • TAC triacetylcellulose
  • PET polyethylene terephthalate
  • the surface protecting film F 13 is laid on the first polarizer protecting film F 11 b through a weak pressure-sensitive adhesive layer F 15 interposed therebetween.
  • the releasing film F 12 is laid on the second polarizer protecting film F 11 c through a pressure-sensitive adhesive layer F 14 interposed therebetween.
  • the first and second polarizer protecting films F 11 b and F 11 c are not particularly limited, and are each comprised of, for example, a film whose material is a thermoplastic resin excellent in transparency, mechanical strength, thermal stability, water blocking property, isotropy and the like.
  • thermoplastic resin examples include cellulose resins such as triacetylcellulose, polyester resin, polyethersulfone resin, polysulfone resin, polycarbonate resin, polyamide resin, polyimide resin, polyolefin resin, (meth) acrylic resin, cyclic polyolefin resin (norbornene based resin), polyarylate resin, polystyrene resin, and polyvinyl alcohol resin; and mixtures thereof.
  • cellulose resins such as triacetylcellulose, polyester resin, polyethersulfone resin, polysulfone resin, polycarbonate resin, polyamide resin, polyimide resin, polyolefin resin, (meth) acrylic resin, cyclic polyolefin resin (norbornene based resin), polyarylate resin, polystyrene resin, and polyvinyl alcohol resin; and mixtures thereof.
  • the first optical member F 11 is an optical film having a multi-layer laminated structure in which various optical layers are laminated onto each other when the layers are practically used.
  • the optical layers are not particularly limited.
  • An example thereof is a method of applying a hard coating treatment, antireflective treatment or a surface treatment for prevention of sticking, or for diffusion or antiglare to a surface of the polarizer protecting film on which the polarizer is not bonded (a surface on which no adhesive coating layer is laid), or laminating an aligned liquid crystal layer for viewing angle compensation, or the like onto the surface; or a member in which one or more of the following are laminated onto the surface: a reflector, a semi-transmissive plate, a retardation plate (including such as a 1 ⁇ 2 or 1 ⁇ 4 wavelength plate ( ⁇ plate)), or an optical film used to form a liquid crystal display device or the like, such as a viewing angle compensating film.
  • the first polarizer F 11 a is comprised of, for example, a polyvinyl alcohol based film.
  • the releasing film F 12 is temporarily bonded onto an uncovered surface of the first pressure-sensitive adhesive layer F 14 in order to prevent the surface from being polluted, or the like. This makes it possible to prevent the pressure-sensitive adhesive layer F 14 from being contacted when the laminated product is in an ordinarily-handled state.
  • the releasing film F 12 may be an appropriate film according to prior art, for example, an appropriate thin sheet piece which is optionally subjected to coating treatment with an appropriate peeling agent, such as a silicone based, long-chain alkyl based or fluorine-contained peeling agent, or molybdenum sulfite;
  • an appropriate peeling agent such as a silicone based, long-chain alkyl based or fluorine-contained peeling agent, or molybdenum sulfite
  • the sheet piece include a plastic film, a rubber sheet, a paper piece, a nonwoven cloth, a net, a foamed sheet and a metallic foil piece, and any laminated product thereof.
  • the surface protecting member F 13 is formed through the weak pressure-sensitive adhesive layer F 15 .
  • a main purpose thereof is the prevention of a scratch or a stain, or the like.
  • the surface protecting member may be, for example, an appropriate member according to prior art, for example, an appropriate thin sheet piece which is optionally subjected to coating treatment with an appropriate peeling agent, such as a silicone based, long-chain alkyl based or fluorine-contained peeling agent, or molybdenum sulfite; examples of the sheet piece include a plastic film, a rubber sheet, a paper piece, a nonwoven cloth, a net, a foamed sheet and a metallic foil piece, and any laminated product thereof.
  • an appropriate peeling agent such as a silicone based, long-chain alkyl based or fluorine-contained peeling agent, or molybdenum sulfite
  • examples of the sheet piece include a plastic film, a rubber sheet, a paper piece, a nonwoven cloth, a
  • the pressure-sensitive adhesive layer F 14 and the weak pressure-sensitive adhesive layer F 15 are laid in order to attain bonding with other members such as a liquid crystal cell.
  • the pressure-sensitive adhesive which constitutes the pressure-sensitive adhesive layer F 14 and the weak pressure-sensitive adhesive layer F 15 , respectively, are not particularly limited, and each of the layers may be formed by an appropriate pressure-sensitive adhesive according to the prior art, such as an acrylic pressure-sensitive adhesive.
  • the isolating structure 50 is comprised of walls made of a transparent material, and a framework structure. Blowers 40 are set to the ceiling of the isolating structure 50 .
  • the blowers 40 are each equipped with an HEPA filter so that highly clean air is sent into the division wall structure 50 to generate a flow of the clean air.
  • Air discharging openings 50 a are made in the wall surface underneath of the division wall structure 50 in order to discharge the air therein to the outside. Filters may also be set to the planes of the openings to prevent invading materials from the outside.
  • the division wall structure 50 and the blowers 40 make it possible to maintain a clean environment of the whole of the manufacturing system and appropriately prevent the contamination of foreign substances from the outside. It is unnecessary to render the whole of the factory a clean room since only the manufacturing system is isolated from the outside by the division wall structure 50 .
  • the width of the first material roll depends on the adhesion size of an optical display unit.
  • a first carrying device 12 for carrying the first laminated optical product F 1 is comprised of, for example, a pair of nip rollers, tension rollers, a rotation driving device, an accumulating device A, a sensor device, a controlling device and the like (see FIG. 4 ).
  • a first pre-inspection peeling device 13 illustrated in FIG. 4 peels the releasing film F 12 from the first laminated optical product F 1 which is being carried.
  • the first pre-inspection peeling device 13 has a structure in which from the carried first laminated optical product F 1 , the releasing film F 12 is wound around a knife edge region of a peeling mechanism 131 to be peeled, and then the peeled releasing film F 12 is wound up around a roll 132 .
  • a first defect inspecting device 14 illustrated in FIG. 4 inspects defects of the first laminated optical product F 1 . Without considering a retardation inherent in the releasing film F 12 , the defect inspection of the first optical member F 11 can be made.
  • Examples of the method for the defect inspection used herein include a method of applying image-photographing and image-processing to both surfaces of the first laminated optical product F 1 through transmissible light or reflective light; a method of arranging, between a CCD camera and an inspecting target, a polarizing film for inspection so as to be in a crossed Nichol state between the film and the polarization axis of the polarizing plate, which is the inspecting target (the arrangement may be referred to as 0-degree cross), and then applying image-photographing and image-processing thereto; and a method of arranging, between a CCD camera and an inspecting target, a polarizing film for inspection so as to give a predetermined angle (for example, an angle in a range more than 0 degree and not more than 10 degrees) between the film and the polarization axis of the polarizing plate, which is the inspecting target (the arrangement may be referred to as x-degree cross), and then applying image-photographing and image-processing thereto.
  • the defect data obtained in the first defect inspecting device 14 are tied to positional data (for example, position coordinates) thereof, and transmitted to the controlling device so that the data can contribute to a cutting method through a first cutting device 16 , which will be described later.
  • the defect-containing first laminated optical product F 1 is configured to be excluded by a first excluding device 19 , which will be described later, so as not to be bonded onto any optical display unit W.
  • the first releasing film bonding device 15 adheres the releasing film F 12 a onto the first optical member F 11 through the first pressure-sensitive adhesive layer F 14 interposed therebetween.
  • the releasing film F 12 a is unrolled from a material roll 151 of the releasing film F 12 a , and then the releasing film F 12 a and the first laminated optical product F 1 are sandwiched between one or more roll pairs 152 .
  • the roller pair(s) 152 allow(s) predetermined pressure to act thereon, thereby bonding the releasing film F 12 a onto the first optical member F 11 through the first pressure-sensitive adhesive layer F 14 interposed therebetween.
  • a first cutting device 16 illustrated in FIG. 4 cuts the surface protecting member 13 , the weak pressure-sensitive adhesive layer 15 , the first optical member 11 and the first pressure-sensitive adhesive layer F 14 without cutting the releasing film 12 a . It is preferred that the first cutting device 16 cuts the laminate into a predetermined size based on the position coordinates of the defects detected in the first defect inspecting treatment to avoid defect regions.
  • the method for the cutting is, for example, laser cutting, cutter cutting, or some other known cutting method.
  • the device is configured to cut the laminate to avoid the defects based on the defect data obtained by the first defect inspecting device 14 . In this way, the yield of the first laminated optical products F 1 is largely improved.
  • a defect-containing first laminated optical product F 1 out of the first laminated optical products F 1 is configured to be excluded by a first excluding device 19 , which will be described later, so as not to be bonded onto any optical display unit W.
  • Non-defective product judgment ( FIG. 1 , S 7 ): From the results of the defect inspection based on the first defect inspecting device 14 , it is judged whether the products are each a non-defective product or not.
  • the judgment criterion for the non-defective product judgment is beforehand set. For example, the judgment is made in accordance with the number of the detects per predetermined area, the size of the defects, and the kind of the defects. The non-defective product judgment is made severer as the display performance for higher precision is required.
  • a peeling mechanism 171 of the first peeling device has a knife edge region having a sharp tip, and is configured in such a manner that the releasing film F 12 a is wound around this knife edge region to be transferred reversely, whereby the releasing film F 12 a is peeled and additionally the first laminated optical product F 1 after the releasing film F 12 a is peeled is sent onto a surface of the optical display unit W.
  • the peeled releasing film F 12 a is wound up around a roll 172 .
  • a pushing roller 181 is brought into contact with a surface of the surface protecting member F 13 , and a guide roller 182 is brought into contact with the lower surface of the optical display unit W to press the first laminated optical product F 1 onto the optical display unit W surface, thereby bonding the uncovered bonding-surface of the first optical member F 11 (the surface of the first pressure-sensitive adhesive layer F 14 ), from which the releasing film F 12 a has been peeled, onto the optical display unit W surface.
  • the pushing roller 181 and the guide roller 182 may each be an elastic roller (made of, for example, a silicone rubber), or a roller made of metal.
  • the washed optical display unit W is carried up to a first bonding device by a carrying means R.
  • the carrying means R is comprised of, for example, a plurality of carrying rollers, a mechanism for switching the carrying direction, a rotation driving device, a sensor device, a controlling device, and the like.
  • the first optical member F 11 is bonded onto one of the surfaces of the optical display unit W.
  • the following will describe a manufacturing step of bonding a second optical member F 21 onto the other surface with reference to FIGS. 9 , and 10 A to 10 C.
  • the same steps as in the above-mentioned manufacturing step may be briefly described.
  • the second laminated optical product F 2 which is a long product, is prepared as a second material roll.
  • the laminated structure of the second laminated optical product F 2 has a structure as illustrated in FIG. 2 .
  • the second laminated optical product F 2 has a second optical member F 21 , a releasing film F 22 , and a surface protecting member F 23 .
  • the second optical member F 21 is comprised of a second polarizer F 21 a , a third polarizer protecting film F 21 b on one of the surfaces thereof through an adhesive layer (not illustrated) interposed therebetween, and a fourth polarizer protecting film F 21 c on the other surface thereof through an adhesive layer (not illustrated) interposed therebetween.
  • a second carrying device 22 illustrated in FIG. 9 for carrying the second laminated optical product F 2 has the same structure as the first carrying device 12 . However, the carrying direction of the second laminated optical product F 2 is configured to reverse to the carrying direction of the first laminated optical product F 1 , and further the product F 2 is carried to direct the surface of the releasing film F 22 upward.
  • a second pre-inspection peeling device illustrated in FIG. 9 peels the releasing film F 22 from the second laminated optical product F 2 which is being carried. Its peeling mechanism is similar to the above-mentioned peeling mechanism.
  • the second pre-inspection peeling device is configured in such a manner that the releasing film F 22 is wound around a knife edge region of a peeling mechanism 231 to be peeled, and then this peeled releasing film F 22 is wound up around a roll 232 .
  • Defect inspecting step (S 13 ) After the releasing film removing step (S 11 ), a second defect inspecting device 24 illustrated in FIG. 9 inspects the defects of the second laminated optical product F 2 .
  • the structure of the second defect inspecting device 24 is similar to that of the first defect inspecting device 14 .
  • the structure of the second cutting device 26 is similar to that of the first cutting device 16 .
  • Non-defective product judgment From the results of the defect inspection based on the second defect inspecting device 24 , it is judged whether the products are each a non-defective product or not.
  • the judgment criterion for the non-defective product judgment is beforehand set. For example, the judgment is made in accordance with the number of the detects per predetermined area, the size of the defects, and the kind of the defects. The non-defective product judgment is made severer as the display performance for higher precision is required.
  • the optical display unit W 1 is rotated by 90 degrees by means of a carrying direction switching mechanism of a carrying mechanism R to make the polarizer of the first optical member F 11 and that of the second optical member F 21 into a crossed Nichol relationship.
  • a peeling mechanism 271 of the second peeling device has a knife edge region having a sharp tip, and is configured in such a manner that the releasing film F 22 a is wound around this knife edge region to be transferred reversely, whereby the releasing film F 22 a is peeled and additionally the second laminated optical product F 2 after the releasing film F 22 a is peeled is sent onto a surface of the optical display unit W 1 .
  • the peeled releasing film F 22 a is wound up around a roll 272 .
  • a pushing roller 281 is brought into contact with a surface of the surface protecting member F 23 , and a guide roller 282 is brought into contact with the upper surface of the optical display unit W 1 to press the second laminated optical product F 2 onto the optical display unit W 1 surface, thereby bonding the uncovered bonding-surface of the second optical member F 21 (the surface of the second pressure-sensitive adhesive layer F 24 ), from which the releasing film has been peeled, onto the optical display unit W 1 surface.
  • Step of inspecting an optical display device W 12 An inspecting device 30 inspects an optical display device W 12 having both surfaces on which the optical members are bonded, respectively.
  • the method for the inspection is, for example, a method of applying image-photographing and image-processing to both the surfaces of the optical display device W 12 through reflective right.
  • Another example thereof is a method of setting a polarizing film for inspection between a CCD camera and an inspection target.
  • the algorithm for the image-processing may be a known manner. For example, defects can be detected by, for example, gray-scale decision based on binary image processing.
  • the optical display device W 12 is a non-defective product or not.
  • the display device W 12 is carried to the next mounting step.
  • the display device W 12 is judged to be defective, the display device is subjected to reworking treatment to adhere an optical film thereon newly.
  • the resultant product is inspected.
  • the product is carried to the mounting step.
  • the product is again subjected to reworking treatment or disposal treatment.
  • an optical display device By carrying out, in a series of the above-mentioned manufacturing steps, the bonding step for the first optical member F 11 and the bonding step for the second optical member F 21 in a continuous manufacturing line, an optical display device can be favorably manufactured.
  • the above-mentioned individual steps are particularly performed inside an isolating structure isolated from any factory, optical members can be bonded onto an optical display unit in an environment where cleanness is kept, so that a high-quality optical display device can be manufactured.
  • FIGS. 5A to 5C and FIGS. 7 to 9 are views for explaining structural examples of the excluding device.
  • the structure of the first excluding device 19 is not limited to structures given herein as examples. Various modifications of these structures may be used, and the modifications are included in the technical scope of the present invention.
  • the first excluding device 19 for excluding the first laminated optical product F 1 is described.
  • the action of the first excluding device 19 illustrated in FIG. 5A is described with reference to FIG. 6 .
  • Example 1 of the first excluding device 19 has a structure in which the optical member F 1 to be excluded is excluded at a position where the optical display unit W and the optical member F 11 are bonded onto each other.
  • a roller 192 for exclusion may be an elastic roller (made of, for example, silicone rubber), or may be a roller made of metal.
  • the pushing roller 181 pushes, toward the roller 192 for exclusion, the pressure-sensitive adhesive layer F 14 surface of the optical member F 11 to be excluded, from which the releasing film F 12 a has been peeled by the peeling mechanism 171 , so that the optical member F 11 to be excluded is bonded onto the tape 191 .
  • the optical member F 11 to be excluded, together with the tape 191 is wound around a winding roller 193 .
  • Example 2 of the first excluding device 19 which is illustrated in FIG. 5B , has a structure in which the optical member F 11 to be excluded is excluded at the upstream side relative to the position where the optical display unit W and the optical member F 11 are bonded onto each other.
  • This structure is higher in productivity than the structure of Example 1 since the treatment for bonding the optical display unit W and the optical member F 11 onto each other is not interrupted for a long period of time.
  • the action of Example 2 of the first excluding device 19 which is illustrated in FIG. 5B , is described with reference to FIG. 7 .
  • the first excluding device 19 is comprised of a peeling mechanism 195 for peeling the releasing film F 12 a from the first laminated optical product F 1 , a tape 191 , a roller 192 for exclusion around which the tape 191 is wound, a pushing roller 194 for exclusion which pushes, toward the roller 192 for exclusion, the first optical member F 11 to be excluded from which the releasing film F 12 a is peeled, a winding roller 193 for winding the tape 191 onto which the first optical member F 11 to be excluded is bonded, and an accumulating device A arranged at the downstream side of the device.
  • the roller 192 for exclusion and the pushing roller 194 for exclusion may each be an elastic roller (made of, for example, silicone rubber), or may be a roller made of metal. The action thereof is as follows.
  • the peeling mechanism 195 works to shift to the excluding position.
  • the peeling mechanism 195 has a structure similar to that of the above-mentioned peeling mechanism, which has the knife edge region. However, this peeling mechanism 195 has a mechanism that is shifted to the excluding position when excluding treatment is conducted.
  • the tip of the knife edge region of the shifted peeling mechanism 195 is positioned toward the roller 192 for exclusion, around which the tape 191 is wound, and the first optical member F 11 from which the releasing film F 12 a is peeled is put onto the roller 192 for exclusion.
  • the accumulating device A is in a driving state, and works in such a manner that the treatment for bonding the optical display unit W and the first optical member F 11 onto each other is not interrupted during the excluding treatment.
  • the pushing roller 194 for exclusion pushes, toward the roller 192 for exclusion, the pressure-sensitive adhesive layer F 14 surface of the optical member F 11 to be excluded so that the optical member F 11 is pushed onto the tape 191 .
  • the optical member F 11 together with the tape 191 , is wound around the winding roller 193 .
  • Example 3 of the first excluding device 19 which is illustrated in FIG. 5C , has a structure in which the optical member F 11 to be excluded is excluded at the upstream side relative to the position where the optical display unit W and the optical member F 11 are bonded onto each other.
  • This structure is higher in productivity than the structure of Example 1 since the treatment for bonding the optical display unit W and the optical member onto each other is not interrupted for a long period of time.
  • the action of Example 3 of the first excluding device 19 which is illustrated in FIG. 5C , is described with reference to FIG. 8 .
  • the first excluding device 19 is comprised of a pressure-sensitive adhesive tape 191 , a roller 192 for exclusion around which the pressure-sensitive adhesive tape 191 is wound, and a winding roller 193 for winding the pressure-sensitive adhesive tape 191 .
  • Example 3 is not equipped with the peeling mechanism 195 , the pushing roller 194 nor the accumulating device A as in Example 2. Thus, Example 3 makes it possible to make the device simple. The action thereof is as follows.
  • the roller 192 for exclusion, around which the pressure-sensitive adhesive tape 191 is wound, is shifted by the side of the roller 12 at the excluding position.
  • the excluding position is, for example, the roller 121 of the carrying device 12 .
  • the roller 192 for exclusion pushes, toward the roller 121 , the first optical member F 11 so that the first optical member F 11 to be excluded is bonded onto the pressure-sensitive adhesive tape 191 .
  • the optical member F 11 together with the pressure-sensitive adhesive tape 191 , is wound around the winding roller 193 .
  • the roller 192 for exclusion is returned to the original position.
  • the system acts in such a manner that the treatment for bonding the optical display unit W and the first optical member F 11 onto each other is not interrupted during the excluding treatment.
  • the above-mentioned action is controlled by the controlling device 1 .
  • the following will describe a second excluding device 29 for excluding the second optical member F 21 to be excluded.
  • the structure and the action of the second excluding device 29 illustrated in FIG. 10A are similar to the structure in FIG. 5A and the action thereof, respectively.
  • a guide roller 282 is shifted vertically and upward.
  • a roller 292 for exclusion around which a tape 291 is wound is shifted to the bonding position, which is the position where the guide roller 282 is fixed.
  • a pushing roller 281 is shifted vertically and upward to push the pressure-sensitive adhesive layer F 24 surface of the defect-containing second optical member F 21 onto the tape 291 to adhere the second optical member F 21 onto the tape 291 .
  • the defect-containing second optical member F 21 together with the tape 291 , is then wound around a roller 293 .
  • the structure of a second excluding device 29 illustrated in FIG. 10B is similar, in effect structure, to the structure in FIG. 5B .
  • the structure of a second excluding device 29 illustrated in FIG. 10C is similar to that in FIG. 5C ; the action thereof is also similar although they are different from each other in arrangement position.
  • a first laminated optical product F 1 in FIG. 11 is carried to face its releasing film F 12 upward.
  • the structure and the function of each of a first pre-inspection peeling device 13 , a first defect inspecting device 14 , a first releasing film bonding device 15 and a first cutting device 16 are the similar to those described above. However, the arrangements of these members are different in accordance with the positions of the releasing film F 12 and a releasing film F 12 a.
  • each of a first peeling device 17 , a first bonding device 18 and a first excluding device 19 in FIGS. 12A to 12C are similar to those described above. However, the arrangements of these members are different in accordance with the position of a releasing film F 12 a.
  • a second laminated optical product F 2 in FIG. 13 is carried to face its releasing film F 22 downward.
  • the structure and the function of each of a second pre-inspection peeling device 23 , a second defect inspecting device 24 , a second releasing film bonding device 25 and a second cutting device 26 are similar to those described above. However, the arrangements of these members are different in accordance with the positions of the releasing film F 22 and a releasing film F 22 a.
  • each of a second peeling device 27 , a second bonding device 28 and a second excluding device 29 in FIGS. 14A to 14C are also similar to those described above.
  • the arrangements of these members are different in accordance with the positions of releasing films F 22 and F 22 a.
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