WO2016088619A1 - 光学フィルムの製造方法および製造装置 - Google Patents

光学フィルムの製造方法および製造装置 Download PDF

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Publication number
WO2016088619A1
WO2016088619A1 PCT/JP2015/083040 JP2015083040W WO2016088619A1 WO 2016088619 A1 WO2016088619 A1 WO 2016088619A1 JP 2015083040 W JP2015083040 W JP 2015083040W WO 2016088619 A1 WO2016088619 A1 WO 2016088619A1
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WO
WIPO (PCT)
Prior art keywords
detected
film
width direction
strip
optical film
Prior art date
Application number
PCT/JP2015/083040
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
岡野　彰
前田　実
宏太 仲井
将寛 八重樫
雄基 大瀬
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to KR1020167012936A priority Critical patent/KR101757604B1/ko
Priority to CN201580002766.6A priority patent/CN107041131A/zh
Priority to CN202210117239.1A priority patent/CN114236665A/zh
Publication of WO2016088619A1 publication Critical patent/WO2016088619A1/ja

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    • 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
    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • the present invention relates to an optical film manufacturing method and manufacturing apparatus.
  • An optical film is generally manufactured by producing a long film made of a predetermined resin material and then punching it as a film piece having a predetermined product shape using a punching device (for example, Patent Document 1).
  • a functional part such as an alignment mark may be provided at a specific position on the surface of the optical film.
  • the present invention has been made in order to solve the above-described conventional problems, and a main object of the present invention is a manufacturing method capable of manufacturing a film piece (optical film) in which functional parts are accurately arranged from a long strip-shaped film. And providing a manufacturing apparatus.
  • a band-shaped film having two or more detected parts in the width direction and two or more detected parts in the length direction is subjected to the width direction of the band-shaped film at a predetermined length direction feed pitch. Including cutting sequentially from one to the other, when cutting the strip-like film, detecting the position of the detected part, positioning the cut line with reference to the detected position of the detected part, Obtaining one piece of film having the detected portion to be detected one by one.
  • the position of the detected part is detected using a camera.
  • an optical film manufacturing apparatus before cutting out the band-shaped film in the width direction, detecting one side edge in the width direction of the band-shaped film, and when cutting out the band-shaped film, And moving from one side of the direction to the other, and the moving direction of the clipping means is determined based on the detected one side edge.
  • an optical film manufacturing apparatus includes a conveying unit that conveys the belt-like film at a predetermined feed pitch in the length direction, a detection unit that detects a detected portion of the belt-like film, and a width direction of the belt-like film from one to the other. And a cutting means for positioning the cutting line with reference to the detected position of the detected portion.
  • the detection means further detects one side edge in the width direction of the belt-like film, and the moving direction of the clipping means is determined based on the detected one side edge.
  • the position of the detected part is determined by detecting the position of the functional part as the detected part and positioning the cut line with the detected position of the detected part as a reference.
  • a well-positioned optical film can be obtained.
  • (A), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention.
  • (A)-(c) is a schematic plan view explaining the example of the arrangement pattern of the to-be-detected part by embodiment of this invention.
  • FIG. 1 (a), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention.
  • the strip film 100 having two or more detected portions 11 in the width direction and two or more detected portions 11 in the length direction is formed in the width direction of the strip film 100 at every predetermined length direction feed pitch.
  • the position of the detected part 11 is detected (FIG. 1 (a)), and the detected position of the detected part 11 is detected. This includes positioning the cut line as a reference (FIG. 1B), and obtaining the film pieces 10 each having the detected portion 11 to be detected one by one.
  • the optical film manufacturing apparatus used in the method for manufacturing an optical film of the present invention includes a transport unit that transports the belt-shaped film at a predetermined length direction feed pitch (hereinafter also simply referred to as a feed pitch), It includes a detecting means for detecting the detected portion and a cutout means.
  • the cutout means moves from one side to the other side in the width direction of the belt-like film, and positions the cutout line on the basis of the detected position of the detected portion.
  • FIG. 1A is a schematic cross-sectional view showing an example of the detection means and the cutout means.
  • a rectangular cutting blade for example, a Thomson blade
  • a camera is used as the detection means 30.
  • the detection unit 30 and the cutout unit 20 are integrally configured and are installed so as to be movable along the rail 40.
  • the detection means and the cutout means are installed separately, the detection means is fixed so as to detect a detected portion by imaging a predetermined area of the belt-like film, and the cutout means is movable. Installed.
  • the strip film 100 having two or more detected portions 11 in the width direction and two or more in the length direction is subjected to the width direction of the strip film 100 for each feed pitch. From one to the other (in the example shown in FIG. 1, from the left side to the right side of the drawing), the film pieces 10 having the detected portions 11 are obtained one by one.
  • the length direction is a direction that can correspond to the transport direction Y of the belt-like film, but is not limited to being parallel to the transport direction Y, and is ⁇ 45 ° with respect to the transport direction Y. It means a direction exceeding 45 °.
  • the width direction means a direction of ⁇ 45 ° to 45 ° with reference to a direction X orthogonal to the transport direction Y.
  • the belt-like film examples include a long optical film having an optical axis.
  • the film piece obtained by this invention can be used suitably as an optical film product used for an image display apparatus, for example.
  • Specific examples of the optical film having an optical axis include a retardation film and a polarizing film.
  • the detected part 11 is a part (functional part) that exhibits a predetermined function.
  • the functional part is a detected part, and the cut line is determined based on the functional part. According to the present invention, since the position to be cut out is determined after detecting the position of the detected portion, a film piece on which the detected portion (functional portion) is accurately positioned can be obtained. Moreover, even when there is variation in the interval between the detected portions on the strip film, or when the strip film is meandering, a film piece in which the detected portion is accurately positioned can be obtained.
  • the cut-out position cannot be adjusted according to the state of the strip-shaped film side, such as the variation in the interval between the functional sections and the meandering of the strip-shaped film.
  • a well-positioned film piece cannot be obtained.
  • the non-polarizing part namely, part which expresses the function which can permeate
  • Another example of the detected part (functional part) is an alignment mark.
  • the detected part 11 is a part that can be distinguished from the part other than the detected part 11 of the strip film 100. It is preferable that the detected part 11 can be distinguished from parts other than the detected part 11 in appearance. In one embodiment, the detected part 11 differs in light transmittance from parts other than the detected part. Moreover, in another embodiment, the to-be-detected part 11 differs in a color tone and / or lightness and darkness from parts other than a to-be-detected part. In FIG. 1, for the sake of easy viewing, the above-mentioned appearance distinction is not shown, and instead, the outline of the detected portion 11 is shown by a solid line.
  • FIG. 2A is a schematic plan view illustrating an example of an arrangement pattern of the detected portion 11 in the belt-like film 100
  • FIG. 2B illustrates another example of the arrangement pattern of the detected portion 11.
  • FIG. 2C is a schematic plan view illustrating still another example of the arrangement pattern of the detection target portion 11.
  • the detected part 11 can be arbitrarily arranged according to the use of the film piece.
  • the detected portions 11 are preferably arranged on a substantially straight line in the width direction (FIG. 2A).
  • the arrangement direction of the detected parts 11 with respect to the width direction edge of the belt-like film 100 can be any appropriate angle. That is, the arrangement direction of the detected parts may be orthogonal to the direction of the width direction edge of the belt-like film 100 (FIG.
  • the interval between the detected portions 11 may be the same (FIG. 2A) or may be different (FIG. 2C). According to the present invention, it is possible to obtain a film piece in which a detected portion is accurately positioned corresponding to various arrangement patterns of the detected portions. In addition, for example, as shown in FIG. 2C, a film piece in which the detected portion is accurately positioned can be obtained even if the arrangement pattern has no regularity.
  • the position of the detected part 11 is detected as shown in FIG. 1 (a), and then the detected position of the detected part 11 is detected as shown in FIG. 1 (b).
  • the cut line 12 is positioned as a reference. More specifically, the positioning of the cut line 12 is based on the position of the specific portion in the shape defined by the cut line 12 and the planar shape defined by the cut line 12 based on the detected position of the detected portion 11. This can be done in a controlled manner.
  • the specific location in the shape defined by the cut line 12 may be any location in the shape, such as the center of gravity, vertex, or a point on the side of the shape.
  • the strip film 100 is cut out, and the film pieces 10 having the detected portions 11 to be detected are obtained one by one.
  • the shape of the film piece 10 is defined by the cut line 12.
  • the shape of the film piece 10 can be any suitable shape. For example, a rectangle, a square, a polygon, a circle, an ellipse, etc. are mentioned.
  • the position of the detected part 11 is detected using a camera.
  • Arbitrary appropriate means can be employ
  • FIG. 1 the strip film 100 is cut out using a punching blade 20 corresponding to the shape of the film piece 10.
  • a punching blade 20 such as a Thomson blade
  • the cutting line 12 is positioned by detecting the position of the detected portion 11 and using the detected position of the detected portion 11 as a reference.
  • the position of a specific location in the planar shape defined by (for example, the center of gravity, apex, one point on the side, etc.) of the shape, and the orientation of the planar shape defined by the punching blade 20 (that is, perpendicular to the conveying direction Y and the conveying direction) The angle with respect to the direction X to be performed).
  • the punching blade 20 is moved upward or downward toward the strip film 100 to punch the strip film 100, thereby obtaining the film piece 10.
  • cutting means include cutting by laser light irradiation, cutting with a drill, router processing, water jet processing, and the like.
  • the cutting means 20 when the strip film 100 is cut out in the width direction, the cutting means 20 is moved from one side to the other side of the strip film 100 in the width direction. After cutting out one film piece by the above operation, the cutting means is moved in the width direction, and the next film piece is cut out by the same operation as the above operation (FIGS. 1B to 1D).
  • the movement of the cutout means 20 is a linear movement.
  • the moving direction of the clipping means 20 can be set in any appropriate direction depending on the arrangement of the detected part 11.
  • the moving direction of the cutting means 20 is preferably 90 ° ⁇ 45 °, more preferably 90 ° ⁇ 30 °, and still more preferably 90 ° with respect to the direction of one side edge in the width direction of the strip film 100. ⁇ 15 °.
  • one side edge in the width direction of the strip film 100 is detected, and the detected one side edge (more specifically, the one side edge)
  • the direction of movement of the cutout means 20 is determined based on (direction).
  • a detection means for detecting the detected portion 11 may be used, or a detection means different from the detection means for detecting the detected portion 11 may be used. . That is, the manufacturing apparatus of the present invention can include one or more detection means.
  • the strip film 100 is conveyed by a predetermined feed pitch, and the cutting operation in one row in the width direction is performed for the next row.
  • a plurality of film pieces 10 are formed from the long belt-like film 100 by repeating a predetermined number of times, with one cycle of the cutting operation in one row in the width direction and the conveyance of one pitch of the belt-like film 100 after the operation as one cycle.
  • the feed pitch can be set according to the distance in the length direction of the detected portion 11. For example, when the arrangement of the detected parts in the length direction is parallel to the transport direction Y, the feed pitch is preferably the same length as the distance in the length direction of the detected parts 11.
  • a long polarizer having a long shape and having non-polarizing portions arranged at predetermined intervals in the length direction and the width direction is used.
  • a portion other than the non-polarizing portion (hereinafter also referred to as a polarizing portion) transmits specific polarized light, whereas the non-polarizing portion transmits all polarized components.
  • Such a long polarizer is suitably used as a material for an image display device having a camera unit. More specifically, by using a polarizer cut out from a long polarizer having the non-polarizing part, the position of the non-polarizing part and the position of the camera part are combined to constitute an image display device.
  • the non-polarizing part is appropriately arranged (for example, By arranging the moving direction of the clipping means with respect to the conveying direction of the long polarizer, the direction of the absorption axis of the clipped polarizer can be precisely controlled by arranging as shown in FIG. it can. Moreover, the dispersion
  • the non-polarizing part is a decoloring part formed by decoloring a predetermined part of the polarizer intermediate.
  • the decoloring part can be formed by, for example, laser irradiation or chemical treatment (for example, acid treatment, alkali treatment, or a combination thereof).
  • the non-polarizing part is a through hole (typically, a through hole penetrating the polarizer in the thickness direction).
  • the through hole can be formed, for example, by mechanical punching (eg, punching, engraving blade punching, plotter, water jet) or removal of a predetermined portion of the polarizer intermediate (eg, laser ablation or chemical dissolution).
  • the non-polarizing portion can be distinguished from the portion other than the non-polarizing portion in appearance based on the color tone and / or light transmittance, and can be detected by the detecting means. Therefore, in the manufacturing method of the present invention, the non-polarizing part functions as the detected part 11 described above.
  • the production method of the present invention is suitably used when producing optical films such as retardation films and polarizer films.
  • it is suitably used for manufacturing a polarizer provided in an image display device with a camera (liquid crystal display device, organic EL device) such as a mobile phone such as a smartphone, a notebook PC, or a tablet PC.
  • a camera liquid crystal display device, organic EL device
  • a mobile phone such as a smartphone, a notebook PC, or a tablet PC.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polarising Elements (AREA)
  • Control Of Cutting Processes (AREA)
  • Length Measuring Devices By Optical Means (AREA)
PCT/JP2015/083040 2014-12-02 2015-11-25 光学フィルムの製造方法および製造装置 WO2016088619A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020167012936A KR101757604B1 (ko) 2014-12-02 2015-11-25 광학 필름의 제조 방법 및 제조 장치
CN201580002766.6A CN107041131A (zh) 2014-12-02 2015-11-25 光学薄膜的制造方法及制造装置
CN202210117239.1A CN114236665A (zh) 2014-12-02 2015-11-25 光学薄膜的制造方法及制造装置

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JP2014243855A JP6146921B2 (ja) 2014-12-02 2014-12-02 光学フィルムの製造方法および製造装置
JP2014-243855 2014-12-02

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WO2016088619A1 true WO2016088619A1 (ja) 2016-06-09

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JP (1) JP6146921B2 (enrdf_load_stackoverflow)
KR (1) KR101757604B1 (enrdf_load_stackoverflow)
CN (3) CN111483004A (enrdf_load_stackoverflow)
TW (1) TWI667111B (enrdf_load_stackoverflow)
WO (1) WO2016088619A1 (enrdf_load_stackoverflow)

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JP6872312B2 (ja) * 2015-09-30 2021-05-19 日東電工株式会社 偏光板の製造方法
JP7691853B2 (ja) * 2021-05-27 2025-06-12 日東電工株式会社 偏光子片の製造方法
KR20220169754A (ko) 2021-06-21 2022-12-28 최은지 입체퍼즐을 이용한 혼합현실 체감형 학습 교구
JP7555446B1 (ja) * 2023-03-29 2024-09-24 日東電工株式会社 光学フィルムの製造方法および製造装置
KR102720761B1 (ko) 2024-04-16 2024-10-23 주식회사 국보옵틱스 디스플레이의 시인성 개선 효과를 극대화 하는 광학필름의 제조방법

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Publication number Publication date
CN107041131A (zh) 2017-08-11
JP6146921B2 (ja) 2017-06-14
TWI667111B (zh) 2019-08-01
JP2016109722A (ja) 2016-06-20
CN111483004A (zh) 2020-08-04
CN114236665A (zh) 2022-03-25
TW201627119A (zh) 2016-08-01
KR101757604B1 (ko) 2017-07-12
KR20160087809A (ko) 2016-07-22

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