WO2020003931A1 - Procédé de fabrication d'un dispositif d'affichage optique - Google Patents

Procédé de fabrication d'un dispositif d'affichage optique Download PDF

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Publication number
WO2020003931A1
WO2020003931A1 PCT/JP2019/022258 JP2019022258W WO2020003931A1 WO 2020003931 A1 WO2020003931 A1 WO 2020003931A1 JP 2019022258 W JP2019022258 W JP 2019022258W WO 2020003931 A1 WO2020003931 A1 WO 2020003931A1
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WO
WIPO (PCT)
Prior art keywords
sheet
functional film
shaped optical
optical functional
bonding
Prior art date
Application number
PCT/JP2019/022258
Other languages
English (en)
Japanese (ja)
Inventor
誓大 藤原
曜彰 大沢
宜弘 中村
清貴 堤
孝二 秋山
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 KR1020207009268A priority Critical patent/KR20210023790A/ko
Priority to CN201980005783.3A priority patent/CN111373466A/zh
Publication of WO2020003931A1 publication Critical patent/WO2020003931A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • 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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • the present invention relates to a method for manufacturing an RTP optical display device. More specifically, in the present invention, the pressure-sensitive adhesive layer of the sheet-shaped optical functional film peeled off from the carrier film does not protrude from the top of the peeled body having the top, the leading end of the sheet-shaped optical functional film before peeling. Stopping at the stop position, the rewinding of the carrier film restarts the sheet-shaped optical functional film from the carrier film at the top of the peeled body while holding the leading end of the sheet-shaped optical functional film at the stop position on the peeled body.
  • the present invention relates to a method of manufacturing an optical display device so that at least a line-like deformation does not occur.
  • an optical display device is usually manufactured as follows. First, a strip-shaped optical film laminate having a predetermined width is unwound from a roll.
  • the strip-shaped optical film laminate includes a strip-shaped carrier film, an adhesive layer formed on one surface of the carrier film, and an optical functional film (protective film) supported on the carrier film via the adhesive layer. , A polarizer, a protective film, a pressure-sensitive adhesive layer, and a surface protective film).
  • a sheet-shaped optical function film is formed between adjacent cut lines by continuously making cut lines in the width direction, and the adjacent sheet-shaped optical function is formed. The films can be trimmed from each other by the action of tension.
  • the sheet-shaped optical functional film continuously supported on the carrier film is usually a normal one having no defect, and is peeled off from the carrier film together with the pressure-sensitive adhesive layer by the peeling means arranged near the panel bonding position. Is sent to the panel bonding position.
  • the sheet-shaped optical functional film reaching the panel bonding position is overlapped and pinched on the corresponding bonding surface of the panel member separately transported to the panel bonding position by a bonding means such as a pair of upper and lower bonding rolls that open and close. It is attached.
  • the carrier film side of the optical film laminate is wound around the top of a substantially wedge-shaped peeling means having a top facing the panel bonding position.
  • the sheet-shaped optical functional film is transported while returning the carrier film wound around the peeling means in a direction substantially opposite to the transport direction of the sheet-shaped optical functional film toward the panel laminating position. Exfoliated with the layer.
  • a position on the apparatus where the sheet-shaped optical functional film is peeled off from the carrier film is referred to as a peeling position, and the peeling position exists near the top of the peeling means.
  • the sheet-like optical functional film on the carrier film may be sent to a bonding position with a panel member in a state where its posture is shifted from an ideal posture. In this case, it is necessary to correct the orientation of the panel member according to the state of misalignment of the sheet-shaped optical functional film (also referred to as “posture adjustment”), and then bond the panel member and the sheet-shaped optical functional film. . Further, in such an RTP-type manufacturing system, streak-like deformation may occur in the pressure-sensitive adhesive layer.
  • Patent Document 1 describes that a line-shaped deformation that occurs in the pressure-sensitive adhesive layer of the sheet-shaped optical functional film and is perpendicular to the feeding of the sheet-shaped optical functional film is eliminated. Specifically, when the sheet-shaped optical functional film peeled off from the carrier film together with the pressure-sensitive adhesive layer stops at the top of the peeling means and stops, the streak-like deformation generated in the pressure-sensitive adhesive layer is adhered to the panel member. A method is described in which the pressing force of the laminating roller is used to adjust the transport speed of the laminating roller to be adjusted.
  • Patent Literature 2 discloses that when the step of bonding the one preceding optical film sheet from which the carrier film has been peeled off together with the pressure-sensitive adhesive layer to the one preceding panel member is completed, the next one that once protrudes from the top of the peeled body
  • a carrier film feeder in which a forward / reverse feed roller is disposed before and after the peeling member is described in which the front end portion of the optical film sheet with the pressure-sensitive adhesive layer on the carrier film is accurately returned to a predetermined position of the peeling member and made to stand by. I have.
  • Patent Document 3 an optical film sheet having an adhesive layer is sent to a substrate that has been transported in advance to a pair of open bonding units, and the optical film sheet closes when the optical film sheet is caught.
  • a sticking device for sticking an optical film sheet to a substrate with a pressure-sensitive adhesive layer in a sticking unit that operates by pressing.
  • Patent Document 4 when a sheet piece peeled off together with an adhesive layer from a carrier film is adhered to a liquid crystal panel, the sticking speed of the sticking roller is adjusted so as to eliminate the bending generated in the sheet piece. It is described that the speed is set faster than the speed.
  • Patent Document 5 describes that the top of a peeling body having a top of an apparatus for bonding an optical film sheet to a panel member is positioned closer to a bonding position of the apparatus to enhance bonding accuracy. It describes that the rear end of the optical film sheet is read at a predetermined detection position so that the front end of the optical film sheet is accurately positioned at a predetermined application position.
  • the present inventors have conducted intensive studies and sent the sheet-shaped optical functional film to the laminating position without causing streak-like deformation in the pressure-sensitive adhesive layer of the sheet-shaped optical functional film, which is the subject of the present invention, and bonded it.
  • a method for manufacturing an optical display device was realized by bonding a panel member waiting at the mating position with an adhesive layer having no streak-like deformation.
  • Embodiments of the present invention are as follows. As shown in FIG. 1, the carrier film 2, the pressure-sensitive adhesive layer 4 formed on one surface of the carrier film 2, and were continuously supported on the carrier film 2 via the pressure-sensitive adhesive layer 4. While peeling the sheet-shaped optical function film 3 together with the adhesive layer 4 from the carrier film 2 of the strip-shaped optical film laminate 1 including the plurality of sheet-shaped optical function films 3, the leading end 32 of the sheet-shaped optical function film 3 is removed.
  • the pair of attaching rollers 51 and 52 are sent toward the opened panel joining position 100 and are overlapped without stopping on the panel member 5 previously conveyed to the panel joining position 100, and are simultaneously closed by the closing operation.
  • the sheet-like optical function film 3 is sandwiched between the panel member 5 by a pair of sticking rollers 51 and 52 that open and close, and the sheet-like optical function film 3 is stuck to form an optical display device. It is a method of forming.
  • the sheet-shaped optical device supported on the carrier film 2 is used. Step A of stopping the leading end 32 of the functional film 3 at the stop position 200 on the peeling body 60 without projecting from the top 61 of the peeling body 60 having the top 61 arranged at a position facing the panel bonding position 100.
  • the panel member 5 is connected to a pair of attaching rollers 51 and 52. Is transported to the opened panel bonding position 100, stopped, and waits.
  • the method further includes removing the carrier film 2 from the top 61 of the release body 60.
  • the sheet-like optical functional film 3 is peeled off together with the pressure-sensitive adhesive layer 4, and the leading end 32 of the sheet-like optical functional film 3 is overlapped on the panel member 5 in a standby state without stopping.
  • Step D in which the rollers 51 and 52 are switched and closed, as shown in FIGS. 2B (f1) and (f2), FIGS. 8B (f1) and (f2), and FIGS. 10B (f1) and (f2). A pair of application rollers 51 and 52 that are closed are sandwiched and adhered to the panel member 5 at the same time that the leading end 32 of the sheet-shaped optical functional film 3 is overlapped on the panel member 5.
  • the method further comprises the sheet supported on the carrier film 2 as shown in FIGS. 2C (h1) and (h2), FIGS. 8C (h1) and (h2), and FIGS. 10C (h1) and (h2).
  • the next leading end portion 32 of the sheet-shaped optical functional film 3 reaches the stop position 200 on the peeling body 60
  • the next leading end portion 32 of the sheet-shaped optical functional film 3 stops and rotates. 2C (i1) and (i2) in FIG. 2C, wherein the rear end 31 of the sheet-shaped optical functional film 3 that is bonded and conveyed to the panel member 5 by the pair of bonding rollers 51 and 52 is conveyed.
  • the sheet-like optical functional film 3 and the panel member 5 are formed by a pair of sticking rollers 51 and 52 which rotate by closing operation. Complete bonding After those comprising a step G of opening operation of the pair of sticking rollers 51 and 52 closing operation, the.
  • FIGS. 2B (d1) and (e1) a pair of attaching rollers 51 and 52 for sandwiching and attaching the sheet-shaped optical functional film 3 and the panel member 5 are shown in FIGS. 2B (d1) and (e1), and FIG.
  • FIGS. 2B (d1) and (e1) a pair of attaching rollers 51 and 52 for sandwiching and attaching the sheet-shaped optical functional film 3 and the panel member 5 are shown in FIGS. 2B (d1) and (e1), and FIG.
  • FIG. 10B (d1) and (e1) the front end portion 32 of the sheet-like optical functional film 3 before the sheet-like optical functional film 3 and the panel member 5 are sandwiched. Is preferably rotated at the same speed as the sticking start speed v2 of the sheet-shaped optical function film 3 when the sheet-shaped optical function film 3 is stacked on the panel member 5.
  • the leading end portion 32 of the sheet-shaped optical functional film 3 is moved from the stop position 200 on the release body 60 to the panel bonding position.
  • a step H of detecting that the predetermined position 300 up to 100 has been reached can be included.
  • the distal end portion 32 of the sheet-shaped optical functional film 3 is attached to the panel member 5. It is preferable that the sticking start speed v2 of the sheet-shaped optical functional film 3 that is nipped by the pair of sticking rollers 51 and 52 that are stacked and closed and sent without stopping at the same time is less than 10 mm / sec.
  • the closing operation is performed as shown in FIGS. 2C (g1) and (h1), FIGS. 8C (g1) and (h1), and FIGS. 10C (g1) and (h1).
  • the bonding operation between the sheet-shaped optical functional film 3 and the panel member 5 reaches a predetermined length ⁇
  • the pair of bonding rollers 51, 52 is sandwiched between the pair of bonding rollers 51, 52 and is closed.
  • FIG. 2 is an enlarged schematic view of an apparatus for manufacturing an optical display device by bonding a sheet-shaped optical functional film and a panel member via an adhesive layer using a pair of bonding rollers at a panel bonding position.
  • FIG. 1 shows a two-point movement type camera detection device for reading the rear end of the sheet-shaped optical functional film and the leading end of the sheet-shaped optical functional film at a stop position on the peeling body having a conical section having a top. The position of the leading end is indicated by the current position and the virtual position so that the two-point moving type camera detecting device that detects the position by reading the rear end of the sheet-shaped optical function film reciprocates by the moving distance ⁇ .
  • FIG. 2A to 2C show a state in which the front end of the sheet-shaped optical functional film is advanced to the panel bonding position while the sheet-shaped optical functional film is peeled off from the carrier film and overlapped with the panel member waiting at the panel bonding position shown in FIG. It is a schematic diagram showing each process of (a1) and (a2)-(i1) and (i2) to hold and stick.
  • FIGS. 2A to 2C show a two-point moving type camera detection device that reads the rear end of the sheet-shaped optical functional film for measuring the amount of movement of the leading end of the sheet-shaped optical functional film.
  • FIG. 2A shows the steps (a1) and (a2) to (c1) and (c2). Subsequent to FIG.
  • FIG. 2A steps (d1) and (d2) to (f1) and (f2) are shown. Subsequent to FIG. 2B, steps (g1) and (g2) to (i1) and (i2) are shown. Details of a manufacturing process of an apparatus for manufacturing an optical display device shown in FIGS. 2A to 2C, which performs a bonding operation and operates a pair of bonding rollers configured to open and close in a vertical direction with respect to a feeding direction.
  • FIG. 9 is a control flowchart showing steps [s1] to [s20].
  • Examples of a sheet-shaped optical functional film 3 having a thickness of 110 ⁇ m and a film of a pressure-sensitive adhesive layer 4 having a thickness of 25 ⁇ m (total thickness 135 ⁇ m) are attached to a panel member 5 in Examples and Comparative Examples.
  • Examples 1 to 3 The evaluation items shown in the figure include cueing stop, film feeding speed v1, lamination start speed v2, lamination operation speed v3, glue streak, lamination, productivity, and the like.
  • a tip of the sheet-shaped optical functional film in a fixed cue state is detected from the top of the peeled body, representing the comparative example 1 of FIG. 4, and the sheet-shaped optical functional film is detected from the detection position of the tip to the panel bonding position.
  • FIG. 4 is a schematic diagram of a method of sticking by feeding and accurate positioning with a panel member.
  • the front end of the next sheet-shaped optical functional film after the completion of the preceding laminating step which is shown in Comparative Example 2 in FIG. 4, is detected at the panel bonding position, and the front and rear feeding of the sheet-shaped optical functional film is finely adjusted.
  • FIG. 4 is a schematic diagram of a method of bonding by more accurate positioning with a panel member. 4 shows the comparative example 3 in which the leading end of the next sheet-shaped optical functional film after the preceding laminating step is rewound to the feeding position provided on the upstream side from the top of the peeling body, and the leading end is detected.
  • FIGS. 8A to 8C show, like FIGS. 2A to 2C, the front end of the sheet-like optical functional film is advanced to the panel joining position while peeling the sheet-like optical functional film from the carrier film shown in FIG.
  • FIGS. 8A to 8C show, like FIGS. 2A to 2C, the front end of the sheet-like optical functional film is advanced to the panel joining position while peeling the sheet-like optical functional film from the carrier film shown in FIG.
  • FIG. 8A to 8C show a wide-field type which can alternately detect two points to be read, instead of a two-point movement type camera detection device for reading the rear end of the sheet-shaped optical functional film provided in FIGS. 2A to 2C. Is provided.
  • FIG. 8A shows the steps (a1) and (a2) to (c1) and (c2). Subsequent to FIG. 8A, steps (d1) and (d2) to (f1) and (f2) are shown.
  • FIG. 8B shows the steps (g1) and (g2) to (i1) and (i2).
  • FIG. 8A to 8C details of a manufacturing process of an apparatus for manufacturing an optical display device that performs a bonding operation and operates a pair of bonding rollers configured to open and close in a vertical direction with respect to a feeding direction.
  • FIG. 9 is a control flowchart showing steps [s1] to [s20].
  • 10A to 10C like FIGS. 2A to 2C, the tip of the sheet-like optical functional film is advanced to the panel joining position while peeling the sheet-like optical functional film from the carrier film shown in FIG. It is a schematic diagram showing each process of (a1), (a2)-(i1), and (i2) which overlap and pinch and affix on the panel member waiting at a position.
  • FIG. 10A to 10C show a two-point installation type in which two points are separately read instead of a two-point movement type camera detection device which reads the rear end of the sheet-like optical functional film provided in FIGS. 2A to 2C.
  • a complex fixed camera detection device is provided.
  • FIG. 10A shows each step of (a1) and (a2) to (c1) and (c2). Subsequent to FIG. 10A, steps (d1) and (d2) to (f1) and (f2) are shown. Subsequent to FIG. 10B, steps (g1) and (g2) to (i1) and (i2) are shown. Details of the manufacturing process of the device for manufacturing an optical display device shown in FIGS. 10A to 10C, which performs a bonding operation and operates a pair of bonding rollers configured to open and close in a vertical direction with respect to a feeding direction.
  • FIG. 9 is a control flowchart showing steps [s1] to [s20].
  • An object of the present invention is to provide a method for manufacturing an optical display device according to the RTP method.
  • the carrier film 2 an adhesive layer 4 formed on one surface of the carrier film 2, and a continuous film on the carrier film 2 via the adhesive layer 4.
  • the sheet-shaped optical functional film 3 is peeled off together with the pressure-sensitive adhesive layer 4 from the carrier film 2 of the strip-shaped optical film laminate 1 including a plurality of sheet-shaped optical functional films 3 which are supported in a seamless manner. Is moved toward the panel bonding position 100, is overlapped on the panel member 5 previously conveyed to the panel bonding position 100, and the sheet-shaped optical member is closed by a pair of bonding rollers 51 and 52 that open and close.
  • the adhesive layer 4 is formed so as not to cause streak-like deformation when the optical display device is manufactured. It is to provide a method of bonding the bets like optical function film 3 to the panel member 5.
  • Embodiments including embodiments 1 to 6 of the present invention will be described with reference to the enlarged schematic views of FIG. 1 and (a1) and (a2) to (i1) in FIGS. 2A to 8C, FIGS. 8A to 8C, and 10A to 10C. ) And (i2), and detailed steps [s1] to [s20] of the manufacturing process of the device 10 for manufacturing the optical display device of FIGS. 3, 9 and 11 respectively. This will be described below with reference to a control flow diagram.
  • FIG. 1 is an enlarged schematic view including a panel bonding position 100 of a device 10 for manufacturing an optical display device according to the RTP method.
  • the feeding device 8 for the sheet-shaped optical functional film 3 winds the carrier film 2 in a state in which the other surface is turned inward at the top 61 of the peeling body 60 and wound around the peeling body 60 without loosening.
  • a carrier film feeder operatively operative to rewind.
  • the feeding device 8 for the sheet-shaped optical functional film 3 can include forward / reverse feed rollers 80 and 81 disposed at least in front and back with the top 61 of the peeling body 60 interposed therebetween.
  • the feeding device 8 for the sheet-shaped optical function film 3 includes a forward / reverse rotation feed roller 80, a dancer roller 82 disposed between the forward / reverse rotation feed roller 80 and the peeling member 60, and the other one serving as a carrier film feeding device.
  • the camera detecting devices 70 and 71 or 72 a and 72 b read the rear end 31 of the sheet-shaped optical functional film 3 and measure the position of the leading end 32 of the sheet-shaped optical functional film 3, whereby the sheet-shaped optical functional film 3 is measured. An accurate stroke of the functional film 3 is secured.
  • FIG. 2A (a1) and (a2) show a peeled body having a top portion 61 in which the leading end 32 of the sheet-shaped optical functional film 3 supported on the carrier film 2 is disposed at a position facing the panel bonding position 100.
  • 60 stops at the stop position 200 on the peeling body 60 without cueing from the top 61 of the sheet-shaped optical functional film 3 at the stop position 200.
  • FIGS. 2A (b1) and 2 (b2) show the panel member 5 toward the pre-sticking position of the panel member 5, ie, the panel joining position 100, as is apparent from FIG. 2A (b2) or [s3] of FIG.
  • the state in which the panel member 5 is sucked and held by the suction conveyance means 90 at the pre-sticking position 600 prepared to convey the sheet.
  • [S6] in FIG. 3 is based on the position information x1 of the leading end portion 32 of the sheet-shaped optical function film before cueing recorded in the storage device 802 and the positional information x2 of the leading end position 500 of the panel member 5 before sticking.
  • a shift width and a shift angle (y, ⁇ ) in the longitudinal direction for example, a shift width and a shift angle (y, ⁇ ) in the longitudinal direction.
  • [S7] in FIG. 3 is a step of adjusting the position of the panel member 5 held by the suction conveyance unit 90 at the pre-sticking position 600 based on the calculation.
  • FIGS. 2A (c1) and (c2) show a process B in which the panel member 5 is transported to the panel bonding position 100 where the pair of bonding rollers 51 and 52 are opened, stopped, and waits. This is a step of transporting the panel member 5 whose position has been adjusted in advance to the panel bonding position 100 and stopping the panel member 5 at the panel bonding position 100 between the pair of opened bonding rollers 51 and 52 in [s8] of FIG. As shown.
  • FIG. 2A (b1) shows [s9] in FIG. 2A (b1) in order to detect the leading end 32 of the sheet-shaped optical functional film 3 reaching the predetermined position 300 located between the stop position 200 and the panel bonding position 100.
  • a two-point moving type camera detection device 70 for reading the rear end 31 of the sheet-shaped optical functional film 3 corresponds to the stop position 200 of the leading end 32 of the sheet-shaped optical functional film 3.
  • FIGS. 8A to 8C using a wide-field type single fixed camera detection apparatus 71 that alternately reads two points with one unit. And the flowchart of FIG. 9 will be described.
  • two composite fixed camera detecting devices 72a and 72b installed at a distance ⁇ separate two points. 10A to FIG. 10C in which the positions are read separately, and the flowchart of FIG. 11 will be described.
  • the rear end portion 31 is read to confirm the front end portion 32 of the functional film 3, and then the leading end of the sheet-shaped optical functional film 3 reaching the predetermined position 300 by the fixed camera detection device 72 a in [s 11] of FIG.
  • the rear end 31 of the sheet-like optical function film 3 is read, and the position of the front end 32 is detected. Therefore, the steps of FIGS. 10A to 10C do not include the step of moving the complex-fixed type camera detection devices 72a and 72b as in [s9] of FIG.
  • [[S10] in FIG. 3 is a step of sending the leading end portion 32 of the sheet-shaped optical functional film 3 from the stop position 200 on the peeling body 60 toward the panel member 5 waiting at the panel bonding position 100.
  • the delivery speed v1 of the sheet-shaped optical functional film 3 for sending out the sheet-shaped optical functional film 3 is preferably 5 mm / s to 10 mm / s as shown in FIG.
  • the leading end portion 32 of the sheet-shaped optically functional film 3 that has been sent out is superimposed on the panel member 5 that is on standby without stopping.
  • FIG. 2B (e1) and (e2) show that the leading end 32 of the sheet-shaped optical functional film 3 is placed on the release body 60 by monitoring the distance ⁇ of the feed length of the rear end 31 of the sheet-shaped optical functional film 3.
  • FIG. 2B (e1) or [s14] of FIG. 3 also represents a step of starting the closing operation of the pair of sticking rollers 51 and 52 that are opened and closed.
  • the transport speed of the optical function film 3 is sent out until the leading end portion 32 of the sheet-like optical function film 3 reaches a predetermined position 300 just before the panel bonding position.
  • the technical intention of switching from the speed v1 to the sticking start speed v2 with the panel member 5 is that the closing operation of the sticking rollers 51 and 52 is signaled when the leading end 32 of the sheet-shaped optical functional film 3 is detected at the predetermined position 300.
  • the speed switching after the leading end 32 of the sheet-shaped optical functional film 3 is detected at the predetermined position 300 is eliminated, so that the leading end 32 of the sheet-shaped optical functional film 3 is reliably and stably. This is because the front end portion 32 of the sheet-shaped optically functional film 3 and the panel member 5 are sandwiched between the sticking rollers 51 and 52 at the same time as being stacked on the panel member 5 without stopping. That.
  • the sticking start speed v2 is a feed speed of the sheet-shaped optical functional film 3 when the leading end portion 32 of the sheet-shaped optical functional film 3 is overlaid on the panel member 5, and is shown in Example 3 or Example 5 in FIG.
  • the delivery speed v1 can be the same as the delivery speed v1, but it is preferable that the first and second embodiments be performed until the leading end portion 32 of the sheet-shaped optical functional film 3 reaches the predetermined position 300 just before the panel bonding position. 2.
  • the sticking start speed v2 is set to be lower than the sending speed v1, that is, in a state of v2 ⁇ v1.
  • the sticking start speed v2 of the sheet-shaped optical functional film 3 which is simultaneously sent and nipped by the pair of sticking rollers 51 and 52 that are closed is more specifically, as shown in FIG. 2B (f1). Since the leading end portion 32 of the optical function film 3 is overlapped on the panel member 5 without stopping, it is more preferably less than 10 mm / sec. Further, it is preferable that the pair of attaching rollers 51 and 52 rotate at the same speed as the attaching start speed v2 of the sheet-shaped optical functional film 3 before sandwiching the sheet-shaped optical functional film 3 and the panel member 5. By rotating at the same speed v2 before the holding, the speed difference at the moment when the attaching rollers 51 and 52 come into contact with the sheet-shaped optical functional film 3 and the panel member 5 hardly occurs, and the attaching accuracy can be further improved.
  • FIGS. 2B (f1) and (f2) show the panel bonding of the leading end portion 32 of the sheet-shaped optical functional film 3 at the delivery speed v1 adjusted from the stop position 200 on the peeling body 60 to a speed higher than the bonding start speed v2.
  • the panel member 5 is sent out toward the position 5 and switches from the sending speed v1 to the sticking start speed v2 before reaching the predetermined position 300 between the stop position 200 on the peeling body 60 and the panel sticking position 100, and further waits.
  • FIG. 2B (f1) further shows the two-point movement type camera detection device 70 shown in FIG. 2A (b1) by using the rear end corresponding to the time when the front end 32 of the sheet-shaped optical functional film 3 reaches the predetermined position 300.
  • FIGS. 2C (g1) and (g2) show a pair of sticking rollers 51 that rotate while closing and rotating at the same time as the leading end 32 of the sheet-shaped optical functional film 3 is stacked on the sticking surface of the panel member 5 without stopping.
  • 52 shows a process in which the sheet-shaped optical functional film 3 and the panel member are sandwiched by 52 and further bonded together at a bonding start speed v2.
  • the leading end portion 32 of the sheet-shaped optical functional film 3 is sandwiched between a pair of attaching rollers 51 and 52 that operate to close, and the sheet-shaped optical functional film 3 and a panel member
  • the laminating speed of the pair of laminating rollers 51 and 52 that is closed when the lamination with the lamination 5 reaches the predetermined length ⁇ is from the lamination start speed v2 to a lamination operation higher than the lamination start speed v2.
  • the speed is switched to the speed v3.
  • the relationship between the delivery speed v1, the sticking start speed v2, and the sticking operation speed v3 is as follows.
  • the delivery speed at which the leading end portion 32 of the sheet-shaped optical functional film 3 is sent out from the stop position 200 of the peeling body 60 toward the panel bonding position 100 is v1.
  • the feeding speed v1 of the sheet-shaped optical functional film 3 is maintained until the leading end 32 reaches a predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100, and the predetermined position 300 Is switched to the pasting start speed v2 immediately before More preferably, the sticking start speed v2, which is equivalent to the sticking speed of the pair of sticking rollers 51 and 52 that perform the closing operation, is set such that the distance of sticking between the sheet-shaped optical functional film 3 and the panel member 5 is a predetermined length ⁇ . It is maintained until it reaches, and when it reaches the predetermined length ⁇ , it is further switched to the bonding operation speed v3.
  • the speeds of v1 to v3 are as shown in the first to sixth embodiments of FIG. v1 ⁇ v2, v3 ⁇ v1 V1> v2, v3 ⁇ v1 from the viewpoint of productivity It is preferable to have the following relationship.
  • 2C (i1) and (i2) are the final steps of an embodiment of the present invention, shown as steps [s19] and [s20] in FIG. 3, which comprise a pair of closed and rotating
  • steps [s19] and [s20] in FIG. 3 which comprise a pair of closed and rotating
  • a pair of closing operation is performed. This represents a final step G of switching the attaching rollers 51 and 52 to the opening operation.
  • the final step G is in the state shown in FIG. 2A (a1) and (a2). That is, the position and the angle of the leading end 32 of the next sheet-shaped optical functional film 3 stopped at the stop position 200 are checked by the two-point moving type camera detection device 70, while the pair located at the panel bonding position 100 is checked.
  • the pasting rollers 51 and 52 are opened, and the next panel member 5 waits at the pre-sticking position 600 and is ready to be conveyed to the panel joining position 100 of the opened pair of joining rollers 51 and 52. Then, each step of laminating the next sheet-shaped optical functional film 3 and the next panel member 5 is started subsequently.
  • the technical problem of the present invention shown in Examples 1 to 6 is that the adhesive layer 4 of the sheet-shaped optically functional film 3 has a deformed adhesive streak.
  • the technical solution for achieving this is to prevent the leading end portion 32 of the sheet-shaped optically functional film 3 from projecting from the top 61 of the peeling body 60, that is, to make the peeling body without cueing. 60 at a stop position 200.
  • the front end portion 32 of the sheet-shaped optical functional film 3 once sent out from the stop position 200 is stacked without stopping on the panel member 5 waiting at the panel bonding position 100, and a pair of bonding members that close and operate in conjunction with each other.
  • the sheet is fed without stopping until the rear end 31 of the sheet-shaped optical functional film 3 is cut off from the leading end 32 of the next sheet-shaped optical functional film 3 by being sandwiched and bonded by the rollers 51 and 52. That is to continue.
  • the leading end 32 of the sheet-shaped optical functional film 3 sent from the stop position 200 on the peeling body 60 is preferably continuously fed without stopping at three different speeds. is there.
  • the first speed is a delivery speed v1 that is a speed during a first stroke from the stop position 200 on the peeling body 60 to the panel bonding position 100 to a predetermined position 300, that is, a distance ⁇ .
  • the second speed during the second stroke from the predetermined position 300 until the bonding of the sheet-shaped optical function film 3 and the panel member 5 reaches the predetermined length ⁇ is preferably lower than the sending speed v1.
  • the start speed v2 is selected.
  • the technical intention is that the leading end portion 32 of the sheet-shaped optical functional film 3 is superimposed on the panel member 5 previously conveyed to the panel bonding position 100 where the pair of opened bonding rollers 51 and 52 are located.
  • the sheet-like optical functional film 3 and the panel member 5 are sandwiched by the pair of attaching rollers 51 and 52 that have been closed so far, and the feeding of the sheet-like optical functional film 3 is stopped.
  • the adjustment is performed so that the sheets are stuck at the sticking start speed v2 without being applied. If the sticking start speed v2 is too fast, the adjustment becomes more difficult.
  • the subsequent speed can be switched to the normal high-speed bonding operation speed v3. This is because, as shown in FIG. 4, the "sticking" phenomenon does not occur.
  • the length ⁇ of the first stroke is about 15 to 25 mm
  • the length ⁇ of the second stroke is a length ⁇ from the predetermined position 300 to the panel bonding position 100 and a predetermined length ⁇
  • ⁇ is about 1 to 5 mm
  • ⁇ is about 1 to 10 mm.
  • the sending speed v1 is switched from 10 mm / s to the pasting start speed v2 just before the predetermined position 300 to about 1/3 of 3 mm / s.
  • the laminating operation speed v3 is switched to a high speed of 200 mm / s to respond. I have.
  • Example 2 has almost the same correspondence, except that the sticking start speed v2 of 3 mm / s is set to slightly faster 5 mm / s. Also, the fourth embodiment does not differ greatly from these. The difference from the first embodiment is that the sending speed v1 of 10 mm / s is set slightly lower at 7 mm / s, and the sticking start speed v2 of 3 mm / s is set slightly higher at 5 mm / s.
  • Example 3 since the sticking start speed v2 was too fast as 10 mm / s, the leading end 32 of the sheet-shaped optical functional film 3 was overlapped on the waiting panel member 5 at the speed of v2. At the moment when the sheet is nipped between the pair of sticking rollers 51 and 52, the sheet is likely to be misaligned and no adhesive streak is generated, but this affects the misalignment.
  • Example 5 It has been confirmed that the output speed v1 is reduced to 5 mm / s, which has a slight effect on productivity. In Example 6, no glue streak was generated. However, in contrast to the high-speed laminating operation speed v3 of 200 mm / s employed in the other examples, a 1/40 low-speed 5 mm / s was employed. As a result, productivity is affected.
  • Comparative Example 1 to Comparative Example 3 shown in FIG. 4 in a method of manufacturing an RTP type optical display device, a front end portion 32 of a sheet-shaped optical functional film 3 is formed by a panel member in order to realize required bonding accuracy. 5 to 7, there is a technical problem in how to precisely position the sheet 3 from the top 61 of the peeled body 60 from the top 61 of the peeled body 60, as shown in FIGS. It will stop in the state where it was issued.
  • FIG. 5 detects the leading end of the sheet-shaped optical functional film 3 stopped in a fixed cue state from the top 61 of the peeling body 60, and from the detection position of the leading end to the panel bonding position 100.
  • FIG. 6 shows that the leading end of the next sheet-shaped optical functional film 3 after the preceding laminating step is stopped at the panel bonding position 100 in a crawling state, and is detected before and after the sheet-shaped optical functional film 3.
  • FIG. 5 detects the leading end of the sheet-shaped optical functional film 3 stopped in a fixed cue state from the top 61 of the peeling body 60, and from the detection position of the leading end to the panel bonding position 100.
  • FIG. 6 shows that the leading end of the next sheet-shaped optical functional film 3 after the preceding laminating

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Abstract

La présente invention concerne un procédé de fabrication d'un dispositif d'affichage optique par stratification d'un film fonctionnel optique en forme de feuille sur un élément de panneau sans provoquer au moins une déformation de strie dans une couche adhésive sensible à la pression. Avec le présent procédé, dans la couche adhésive sensible à la pression du film fonctionnel optique en forme de feuille enlevé d'un film de support, le film fonctionnel optique en forme de feuille est arrêté à une position d'arrêt où l'extrémité avant du film fonctionnel optique en forme de feuille avant l'enlevage ne fait pas saillie à partir d'une partie supérieure d'un corps d'enlevage ayant la partie supérieure, par l'enroulement redémarré du film de support, l'extrémité avant du film fonctionnel optique en forme de feuille est alimentée depuis la position d'arrêt du corps d'enlevage jusqu'à une position de stratification de panneau, tandis que le film fonctionnel optique en forme de feuille est enlevé du film de support au niveau de la partie supérieure du corps d'enlevage, l'extrémité avant est superposée sur l'élément de panneau qui a été précédemment transporté jusqu'à la position de stratification de panneau et, en même temps, sans arrêt, le film fonctionnel optique en forme de feuille et l'élément de panneau sont pris en sandwich et stratifiés par une paire de rouleaux de collage qui sont fermés à partir d'un état ouvert et tournés, ce qui permet de fabriquer le dispositif d'affichage optique sans provoquer de déformation de strie dans la couche adhésive sensible à la pression.
PCT/JP2019/022258 2018-06-29 2019-06-05 Procédé de fabrication d'un dispositif d'affichage optique WO2020003931A1 (fr)

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CN201980005783.3A CN111373466A (zh) 2018-06-29 2019-06-05 制造光学显示装置的方法

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JP2014095889A (ja) * 2012-10-10 2014-05-22 Nitto Denko Corp 光学的表示装置を製造する方法及び装置
US20150190995A1 (en) * 2014-01-08 2015-07-09 Lg Chem Ltd. System for laminating optical film and method for manufacturing display unit using the same
JP2017187618A (ja) * 2016-04-06 2017-10-12 日東電工株式会社 光学的表示装置を製造する方法
WO2018084044A1 (fr) * 2016-11-01 2018-05-11 日東電工株式会社 Procédé permettant de produire un dispositif d'affichage optique

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JP2002308519A (ja) * 2001-04-16 2002-10-23 Mitsui Chemicals Inc 粘着シートの貼着方法
JP2004338408A (ja) * 2003-04-24 2004-12-02 Mitsui Chemicals Inc フィルムのラミネート方法および装置
JP4371709B2 (ja) 2003-06-05 2009-11-25 富士フイルム株式会社 光学フィルム貼付装置及び方法
JP5140788B2 (ja) 2010-11-22 2013-02-13 日東電工株式会社 液晶表示素子の連続製造システムおよび液晶表示素子の連続製造方法
JP5458211B1 (ja) 2012-11-19 2014-04-02 日東電工株式会社 光学的表示装置を製造する方法及び装置
JP5458212B1 (ja) 2012-11-19 2014-04-02 日東電工株式会社 光学的表示装置を製造する方法及び装置
JP5452760B1 (ja) * 2013-09-25 2014-03-26 日東電工株式会社 光学的表示装置を製造する方法および装置
KR102040250B1 (ko) * 2016-12-23 2019-11-04 주식회사 엘지화학 디스플레이 유닛 제조 시스템

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Publication number Priority date Publication date Assignee Title
JP2014095889A (ja) * 2012-10-10 2014-05-22 Nitto Denko Corp 光学的表示装置を製造する方法及び装置
US20150190995A1 (en) * 2014-01-08 2015-07-09 Lg Chem Ltd. System for laminating optical film and method for manufacturing display unit using the same
JP2017187618A (ja) * 2016-04-06 2017-10-12 日東電工株式会社 光学的表示装置を製造する方法
WO2018084044A1 (fr) * 2016-11-01 2018-05-11 日東電工株式会社 Procédé permettant de produire un dispositif d'affichage optique

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JP2020003687A (ja) 2020-01-09
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TW202006432A (zh) 2020-02-01
JP6605662B1 (ja) 2019-11-13
CN111373466A (zh) 2020-07-03

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