WO2022074864A1 - 切込線形成装置及び切込線形成方法 - Google Patents

切込線形成装置及び切込線形成方法 Download PDF

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Publication number
WO2022074864A1
WO2022074864A1 PCT/JP2021/014914 JP2021014914W WO2022074864A1 WO 2022074864 A1 WO2022074864 A1 WO 2022074864A1 JP 2021014914 W JP2021014914 W JP 2021014914W WO 2022074864 A1 WO2022074864 A1 WO 2022074864A1
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WO
WIPO (PCT)
Prior art keywords
cut line
optical film
film laminate
transport direction
cutting line
Prior art date
Application number
PCT/JP2021/014914
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
清貴 堤
Original Assignee
日東電工株式会社
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Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN202180003509.XA priority Critical patent/CN115103746B/zh
Priority to KR1020217039744A priority patent/KR102507580B1/ko
Publication of WO2022074864A1 publication Critical patent/WO2022074864A1/ja

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    • 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
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • B32B2041/04—Detecting wrong registration, misalignment, deviation, failure

Definitions

  • the present invention relates to a cut line forming apparatus for continuously forming a cut line in an optical film laminate, and more specifically, a cut line is formed in an optical film laminate conveyed in a horizontal direction. After that, the optical film laminate is conveyed in the vertical direction, and the cut line formation position of the optical film laminate conveyed in the vertical direction is detected, so that the cut line can be formed with high accuracy.
  • the present invention relates to a forming apparatus and a forming method.
  • a long web-shaped optical film laminate in which a long web-shaped optical film and a long web-shaped carrier film are laminated via an adhesive layer is used.
  • cut lines in the width direction are continuously formed at positions determined based on the results of defect inspections performed in advance by using a cut line forming means arranged opposite to the pedestal. It is formed.
  • a plurality of sheets of optical film continuously supported on the carrier film are formed between two cut lines adjacent to each other in the length direction.
  • the sheet of the optical film is sent to the bonding device in a state of being supported by the carrier film, peeled from the carrier film together with the adhesive layer, and then bonded to the panel member.
  • Such an optical display device manufacturing system is referred to as a "continuous pasting (RTP) system” in distinction from an individual pasting system in which a sheet of an optical film cut out in advance is bonded to a panel member.
  • optical display devices have been increasing in size, and along with the increase in size, the sizes of optical film sheets and panel members used have also increased.
  • the position of the cut line continuously formed along the length direction of the optical film laminate is determined in the manufacturing process. During that time, it is necessary to make continuous and accurate decisions.
  • the cut line formed by the cut line forming means is placed downstream of the cut line forming means. It is detected by the cut line detecting means arranged on the side, the position of the formed cut line is obtained, and the cut line forming means is controlled based on the result.
  • a detection camera for detecting a cut line is provided on the downstream side of the cut position of the optical member sheet, and the cutting device is moved according to the position of the detected cut line to detect the cut position. Techniques for adjusting the distance to a position are disclosed.
  • the optical film laminate is usually configured to be horizontally conveyed from the position where the cut line is formed to the position where the cut line is detected, and the optical film laminate is conveyed between them. There is no mechanism to support it. Therefore, especially in the case of a large optical film in which the distance between adjacent cut lines is long, the optical film laminate bends due to its own weight from the position where the cut lines are formed to the detection position, and the adjacent cut lines are formed. An error may occur between the length between and the preset optical film length. Although it is possible to eliminate the error by increasing the tension of the optical film laminate, increasing the tension may cause stretching or breakage of the optical film laminate.
  • Patent Document 2 The technique disclosed in Patent Document 2 is configured so that the optical film laminate is vertically conveyed from the position where the cut line is formed to the position where the cut line is detected. In such a configuration, since the optical film laminate does not bend between the cut line formation position and the detection position, the length between the adjacent cut lines and the preset optical film length It is unlikely that an error will occur between the optics and the optics.
  • Patent Document 2 when a circular blade that rotates around a rotation axis in the vertical direction is used to form a cut line in an optical film laminate that is conveyed in the vertical direction, an actual apparatus is used.
  • the cut line forming unit (indicated by reference numeral 10 in FIG. 2) for forming a cut line in a normal RTP system is a circular blade having a rotation axis horizontal to the main surface of the optical film laminate to be conveyed. (That is, the rotating surface of the circular blade is orthogonal to the main surface of the optical film laminate), and the drive mechanism including the motor for rotating the circular blade is opposite to the circular blade with the optical film laminate sandwiched between them. It has a pedestal arranged on the side.
  • the circular blade and drive mechanism can be moved in a direction orthogonal to the main surface of the optical film laminate by a first movement mechanism including a motor and a guide rail, and a second movement including the motor and the guide rail.
  • the mechanism allows the optical film laminate to be moved across the main surface.
  • the circular blade, the driving mechanism, the first moving mechanism, and the second moving mechanism are supported by the support portion.
  • the support portion is configured to support a circular blade, a drive mechanism, a first moving mechanism, and a second moving mechanism on the side surface of the support portion.
  • the position where the cut line is formed in the optical film laminate is, for example, the support portion is moved in the transport direction of the optical film laminate together with the circular blade and the drive mechanism, or the support portion is fixed and the circular blade and the movement mechanism are moved.
  • the adjustment can be made by changing the feeding amount of the optical film laminate by using a film driving means such as a feed roller.
  • An object of the present invention is to provide a cut line forming device and a cut line forming method that enable high-precision cut line formation without adopting a large-scale and complicated configuration.
  • a long web-shaped optical film laminate including a long web-shaped carrier film and a long web-shaped optical film laminated on the carrier film via an adhesive layer is formed.
  • a cut line forming apparatus for continuously forming a cut line extending in the width direction.
  • the cut line forming device includes a cut line forming unit, a transport direction changing unit, and a cut line detecting unit.
  • the cut line forming portion forms a cut line in the optical film laminate that is horizontally conveyed from the surface opposite to the carrier film.
  • the transport direction changing portion is arranged on the downstream side in the transport direction of the optical film laminate from the cut line forming portion, and changes the transport direction of the optical film laminate after the cut line formation by a predetermined angle.
  • the cut line detection unit is arranged on the downstream side of the optical film laminate in the transport direction from the transport direction changing portion, and detects the cut line formed in the optical film laminate. It is preferable that no member in contact with the optical film laminate is arranged between the cut line forming portion and the transport direction changing portion.
  • a cut line is formed in the optical film laminated body that is conveyed in the horizontal direction.
  • the conveying direction of the optical film laminated body is It is not limited to being completely parallel to the horizontal plane (0 ° with respect to the horizontal plane), and may be transported substantially horizontally, specifically, the transport direction is with respect to the horizontal plane. It can include the case where the inclination is -15 ° to the case where the inclination is + 15 °.
  • the predetermined angle is preferably 60 ° or more and 120 ° or less. Further, in one embodiment, it is preferable that the distance between the cut line forming portion and the transport direction changing portion is 100 mm or more and 850 mm or less.
  • a long web-shaped optical film laminate including a long web-shaped carrier film and a long web-shaped optical film laminated on the carrier film via an adhesive layer.
  • the cut line forming method includes a cut line forming step, a transport direction changing step, and a cut line detecting step.
  • the cut line forming step forms a cut line in the optical film laminate from the surface opposite to the carrier film.
  • the transport direction changing step changes the transport direction of the optical film laminate after the cut line is formed by a predetermined angle on the downstream side of the transfer direction of the optical film laminate from the position where the cut line is formed.
  • the cut line detection step detects the cut line formed in the optical film laminate on the downstream side in the transport direction of the optical film laminate from the position where the transport direction changes.
  • the cut line is formed in a state where the transport direction of the optical film laminate is horizontal, and the transport direction is upward or downward. Since the cut line is detected in the state, the bending of the optical film laminate when the cut line is detected is smaller than that when the detection is performed when the transport direction is horizontal. Therefore, according to this cut line forming apparatus and cut line forming method, the length between adjacent cut lines, that is, the length of the formed optical film sheet and the preset length of the optical film sheet. The error can be made smaller than before, and high-precision cut line formation becomes possible.
  • a cut line for defining a plurality of optical film sheets continuously supported on a long web-shaped carrier film is formed on a long web-shaped optical film. It can be used to continuously form a laminate.
  • the cut line is formed when the transport direction of the optical film laminate is horizontal, and the cut line is formed when the transport direction is upward or downward. Since the detection is performed, the deflection of the optical film laminate when the cut line detection is performed is smaller than that when the detection is performed when the transport direction is horizontal.
  • the length between adjacent cut lines that is, the length of the optical film sheet to be formed, and the predetermined optical film sheet are defined.
  • the error with the length can be made smaller than before.
  • the optical film sheet formed between the adjacent cut lines is fed to the bonding position with the panel member while being supported on the long web-shaped carrier film, and is sent from the long web-shaped carrier film. After being peeled off together with the pressure-sensitive adhesive layer, it can be attached to the panel member with high accuracy.
  • a long web-like shape is used in the previous step of the cut line forming apparatus.
  • the optical film laminate is sent out from the cutting line forming apparatus to a subsequent process.
  • a speed adjusting device for adjusting the transport speed of the film
  • an exclusion device for removing the sheet of the optical film having defects from the long web-shaped carrier film
  • an optical film without defects A device such as a bonding device for peeling the sheet from the long web-shaped carrier film and bonding it to the panel member, a winding drive device for winding the long web-shaped carrier film, and the like can be provided.
  • FIG. 1 is a side view showing a schematic configuration for cutting line forming, including the cutting line forming device 1 according to the embodiment of the present invention.
  • FIG. 2 is a side view showing a schematic configuration of a cut line forming apparatus 1 according to an embodiment of the present invention.
  • the optical film laminate PL is fed in the direction indicated by the arrow D1 in FIG. This direction D1 is referred to as the "transport direction" of the optical film laminate PL.
  • the cut line forming apparatus 1 changes the transport direction of the cut line forming portion 10 for forming the cut line and the optical film laminate PL on which the cut line is formed in the cut line forming portion 10 at a predetermined angle. It is provided with a support roller (conveying direction changing unit) 20 for causing the transfer, and a cutting line detecting unit 30 for detecting the position of the cutting line of the optical film laminate PL whose transport direction has been changed.
  • the operation of the cut line forming unit 10 and the cut line detecting unit 30 is controlled by a control means (not shown) configured by a general-purpose computer or the like.
  • the optical film laminate PL on which the cut line is formed in the cut line forming apparatus 1 is a length joined to the long web-shaped optical film OP and the long web-shaped optical film OP via the pressure-sensitive adhesive layer A. It can be a laminated body containing the scale web-shaped carrier film C.
  • the long web-shaped optical film OP may be a single-layer film or a multilayer film in which two or more types of optical films (for example, a splitter and a retardation film) are bonded.
  • the optical film laminate PL is prepared as a roll R having a width corresponding to the length of one of the long side and the short side of the panel member.
  • the optical film laminate PL unwound from the roll R is cut through, for example, a film driving means D such as a feed roller for feeding the optical film laminate PL, a speed adjusting means S such as a dancer roll for adjusting the speed of film transport, and the like. It is sent to the drop line forming device 1.
  • a cut line is formed in the optical film laminate PL sent to the cut line forming device 1.
  • the cut line is the width of the optical film laminate PL from the surface opposite to the carrier film C to at least the surface of the pressure-sensitive adhesive layer A (that is, the interface between the carrier film C and the pressure-sensitive adhesive layer A). It is formed to extend in the direction.
  • the optical film laminate PL is sent to the downstream side of the transport direction D1 by a predetermined distance, and the next cut line is formed.
  • This predetermined transport distance corresponds to the other length of the long side and the short side of the panel member W to which the sheet PS of the optical film laminate PL is bonded.
  • the cut line formed in the cut line forming portion 10 and located on the pedestal 16 is referred to as the cut line CL1, and one cut line located on the downstream side in the transport direction of the cut line CL1.
  • the preceding cut line CL2 is used.
  • the cut line forming portion 10 includes a circular blade 11 having a rotation axis horizontal to the main surface of the optical film laminate PL, a drive unit 12 including a shaft and a motor for rotating the circular blade 11, and an optical film laminate.
  • a pedestal 13 arranged on the opposite side of the circular blade 11 with the PL sandwiched between the pedestal 13 and a pressing member 14 that presses the optical film laminate PL at the cutting line forming position to suppress bending and vibration of the optical film laminate PL.
  • the cut line forming portion 10 further includes a motor and a guide for moving the rotary blade 11 and the driving portion 12 in the vertical direction (direction orthogonal to the main surface of the optical film laminate PL) in FIG.
  • the circular blade 11, the drive unit 12, the first moving mechanism 15, and the second moving mechanism 16 are supported by the support portion 17.
  • the support portion 17 supports the circular blade 11, the drive portion 12, the first moving mechanism 15, and the second moving mechanism 16 on its side surface.
  • the cut line forming portion 10 moves the support portion 17 to move the position of the circular cutting tool 11 in the length direction (left-right direction in FIG. 2) of the optical film laminate PL. It further comprises 3 moving mechanisms (not shown). By operating the third moving mechanism, the positions where the cut lines CL1, CL2, ... Are formed on the optical film laminate PL can be adjusted.
  • the first moving mechanism 15, the second moving mechanism 16, and the support portion 17 are not moved, but only the circular cutting tool 11 and the driving portion 12 are moved to cut into the optical film laminate PL.
  • the positions of forming the lines CL1, CL2, ... Can be adjusted.
  • the circular blade 11, the drive unit 12, the first moving mechanism 15, and the second moving mechanism 16 are moved, and the cut lines CL1, CL2, ... ⁇ It is also possible to adjust the position to form.
  • the cut line forming unit 10 operates so as to form the cut lines CL1, CL2, ... On the optical film laminate PL by control by a control means (not shown). Specifically, in response to a control signal from the control means, the first moving mechanism 15 operates to lower the circular blade 11 to a predetermined position, and the drive unit 12 operates to rotate the circular blade 11 to rotate the second.
  • the drive mechanism 16 of the above operates to move the circular blade 11 in the width direction of the optical film laminate PL.
  • the transport direction changing unit 20 sets the transport direction of the optical film laminate PL from the transport direction in the cut line forming section 10 (direction d1 shown in FIG. 2) to an upward direction or a downward direction (the embodiment of FIG. 2).
  • the direction can be changed by a predetermined angle ⁇ with respect to the direction parallel to the horizontal plane (direction of 0 ° with respect to the horizontal plane).
  • the transport direction changing portion 20 has a support roller 22 that is at least longer than the width of the optical film laminate PL and is arranged so as to be in contact with one of the two main surfaces of the optical film laminate PL. ..
  • the distance L between the downstream portion) and the first contact position (contact portion with the support roller 22) in the transport direction changing portion 2 is 850 mm or less in order to minimize the deflection of the optical film laminate PL. It is preferably 650 mm or less, more preferably 350 mm or less, and even more preferably 350 mm or less. If the distance is larger than 850 mm, the optical film laminate may bend significantly due to its own weight.
  • the transport direction changing unit 20 is preferably as close as possible to the cut line forming unit 10, but various devices may be arranged between the cut line forming unit 10 and the transport direction changing unit 20. Therefore, in order to secure a space for arranging various devices, the distance L between the cut line forming portion 10 and the transport direction changing portion 20 is preferably 100 mm or more, and more preferably 150 mm or more. preferable.
  • the transport direction d2 of the optical film laminate PL after being changed by the transport direction changing unit 20 may be upward or downward with respect to the transport direction d1 before the change.
  • the predetermined angle ⁇ between the direction parallel to the horizontal plane and the transport direction d2 is preferably 60 ° or more and 120 ° or less, and the closer to 90 ° is preferable. If the predetermined angle ⁇ is 60 ° or more and 120 ° or less, the optical film laminate PL after the transfer direction is changed does not bend, or even if it does, the cut line detection unit 30 cuts. The deflection is limited to the extent that it does not affect the accuracy when detecting the position of the line.
  • a support member such as a roller that supports the optical film laminate PL from the lower main surface is arranged between the cut line forming portion 20 and the transport direction changing portion 30.
  • a support member is not arranged. Even if the support member is arranged between the cut line forming portion 10 and the transport direction changing portion 20, it does not provide a more effective contribution to the elimination of the bending of the optical film laminate PL between them. Not only that, if the adjustment accuracy of the support height of the optical film laminate PL by the support member is poor, the linear accuracy may decrease due to the support member pushing up the optical film laminate PL.
  • the transport direction position of the cut line CL1 formed by the cut line forming portion 10 is corrected by using the correction information.
  • the correction information is generated based on the amount of deviation between the position where the one preceding cut line CL2 detected by the cut line detection unit 30 is formed and the predetermined cut line formation reference position.
  • the cut line detecting unit 30 is arranged on the downstream side of the transport direction changing unit 20, the position of the cut line can be detected in a state where the optical film laminated body PL does not bend.
  • the cut line detection unit 30 can take an image of a predetermined range in the portion where the cut line CL2 is formed by using the camera and the illumination. It is preferable to use the image pickup means 32, but the present invention is not limited to this, and for example, an edge sensor such as a laser type or an ultrasonic type can also be used.
  • the predetermined range imaged by the image pickup means 32 is a range as long as it can generate correction information for correcting the formation position of the next cut line CL1 based on the position of the cut line CL2 already formed. , Not limited.
  • the predetermined range may be appropriately set according to the correction information to be generated, such as a range including only the cut line CL2 and a range including the cut line CL2 and one side edge portion of the optical film laminate PL. can.
  • FIG. 3 is a schematic flow chart showing a process of forming a cut line by the cut line forming device 1.
  • the step of forming the cut line by the cut line forming apparatus 1 is started by feeding out the optical film laminated body PL from the roll R of the optical film laminated body PL (s1).
  • the unwound optical film laminate PL is fed in the D1 direction shown in FIG. 1, and is fed to the cut line forming apparatus 1 via, for example, the speed adjusting means S (s2).
  • the cut line CL2 having a depth reaching at least the surface of the pressure-sensitive adhesive layer A from the surface opposite to the carrier film C is formed on the fed optical film laminate PL. (S3).
  • the optical film laminate PL on which the cut line CL2 is formed is further fed in the d1 direction of FIG. 2, and the transport direction is changed by a support roller 22 located on the downstream side from a direction parallel to the horizontal plane at a predetermined angle ⁇ . In this embodiment, it is sent in the d2 direction of FIG. 2 (s4).
  • the portion where the cut line CL2 is formed reaches the cut line detection unit 30 arranged on the downstream side of the support roller 22 (s5).
  • the optical film laminated body PL after the cut line CL2 is formed by the cut line forming portion 10 is the position where the optical film laminated body PL finally contacts the cut line forming portion 10 (the most downstream of the pedestal 13). Part) and the position where the support roller 22 first contacts (the distance L between them is preferably 100 mm or more and 850 mm or less), it is preferable that the film is conveyed without contacting other members. Further, it is preferable that the optical film laminate PL after the transfer direction is changed by the support roller 22 is conveyed at an angle in which the transfer direction d2 is close to 90 ° with respect to the direction parallel to the horizontal plane.
  • the angle ⁇ is not limited to 90 °
  • the optical film laminate PL after changing the transport direction is 60 ° or more and 120 ° or more with respect to the direction parallel to the horizontal plane, depending on the needs such as the configuration of the apparatus. It can be transported at an angle of ° or less.
  • the cut line CL2 is detected by the image pickup means 32 of the cut line detection unit 30 (s6).
  • the cut line CL2 can be detected, for example, by searching for the brightness of the entire acquired image and recognizing a place having a large contrast difference as a line.
  • the deviation between the position where the detected cut line CL2 is formed and the predetermined cut line formation reference position is inspected (s7), and if there is a deviation, it is generated based on the calculated deviation amount.
  • the support portion 17 of the cut line forming portion 10 is moved in the length direction of the optical film laminate PL according to the correction information (s8). After adjusting the position of the circular cutting tool 11 (that is, the position where the cut line CL1 is formed) by moving the support portion 17, the cut line CL1 is formed (s9).
  • the cut line CL1 can be formed without performing the step of s8 (s9).
  • the formation position of the cut line CL1 is adjusted by moving the support portion 17, but the present invention is not limited to this, and for example, the circular cutting tool 11 may be moved or fed. It can also be adjusted by changing the feeding amount of the optical film laminate with a film driving means such as a roller.
  • the optical film laminate PL is sent again by a predetermined distance (s10), and the steps from s5 to s9 are repeated.
  • the optical film sheet OP sheet defined between two adjacent cut lines continuously formed on the optical film laminate PL in this way is sent to the bonding process with the panel member. It can be attached to a panel member.
  • Cut line forming device 10 Cut line forming part 11 Circular blade 12 Drive part 13 Pedestal 14 Holding member 15 First moving mechanism 16 Second moving mechanism 17 Support part 20 Transport direction changing part 22 Support roller 30 Cut line Detection unit 32 Imaging means PL optical film laminate CL1, CL2 Notch line

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PCT/JP2021/014914 2020-10-09 2021-04-08 切込線形成装置及び切込線形成方法 WO2022074864A1 (ja)

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CN202180003509.XA CN115103746B (zh) 2020-10-09 2021-04-08 切割线形成装置以及切割线形成方法
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Publication number Priority date Publication date Assignee Title
JP4418210B2 (ja) * 2003-11-19 2010-02-17 大日本印刷株式会社 連続帳票のミシン目加工装置
JP2013114227A (ja) * 2011-11-30 2013-06-10 Sumitomo Chemical Co Ltd 光学部材貼合体の製造装置及び製造方法

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WO2009128115A1 (ja) 2008-04-15 2009-10-22 日東電工株式会社 光学フィルム積層体ロールならびにその製造方法および装置
TW201130619A (en) * 2010-03-02 2011-09-16 Ming-Ju Yu Digitalized route cutting method and device
JP5501404B2 (ja) * 2012-05-18 2014-05-21 日東電工株式会社 切込線形成装置及び切込線形成方法
JP6478599B2 (ja) * 2014-12-03 2019-03-06 日東電工株式会社 切込線形成方法及び切込線形成装置
KR102040250B1 (ko) * 2016-12-23 2019-11-04 주식회사 엘지화학 디스플레이 유닛 제조 시스템

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4418210B2 (ja) * 2003-11-19 2010-02-17 大日本印刷株式会社 連続帳票のミシン目加工装置
JP2013114227A (ja) * 2011-11-30 2013-06-10 Sumitomo Chemical Co Ltd 光学部材貼合体の製造装置及び製造方法

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KR20220047726A (ko) 2022-04-19
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