WO2009096388A1 - 光学表示ユニットの製造方法および光学表示ユニットの製造システム - Google Patents
光学表示ユニットの製造方法および光学表示ユニットの製造システム Download PDFInfo
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- WO2009096388A1 WO2009096388A1 PCT/JP2009/051264 JP2009051264W WO2009096388A1 WO 2009096388 A1 WO2009096388 A1 WO 2009096388A1 JP 2009051264 W JP2009051264 W JP 2009051264W WO 2009096388 A1 WO2009096388 A1 WO 2009096388A1
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- Prior art keywords
- sheet product
- defect
- transport
- optical
- film
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Classifications
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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
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
- B32B2037/268—Release layers
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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
- B32B2429/00—Carriers for sound or information
- B32B2429/02—Records or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
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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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/206—Organic displays, e.g. OLED
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/171—Physical features of handled article or web
- B65H2701/1719—Photosensitive, e.g. exposure, photographic or phosphor
Definitions
- the present invention relates to a method of manufacturing an optical display unit in which an optical film piece is bonded to an optical display substrate, and a manufacturing system thereof.
- Patent Document 1 A manufacturing method disclosed in JP-A-2005-37416 (Patent Document 1) is known.
- a release film is left out of a sheet product, and another optical film (for example, a polarizing plate) is cut (hereinafter, this cutting method may be referred to as a half cut).
- this cutting method may be referred to as a half cut.
- substrate for example, liquid crystal panel
- a defect of the optical film is detected using a detection means before half-cutting, and if a defect is detected, the sheet product is cut so as to avoid this defect.
- a cutting method is called a skip cut or a skip cut method.
- the sheet product is cut so as to avoid the defects, and therefore, only an optical film without defects is bonded to the optical display substrate, which is preferable.
- the present invention has been made in view of the above circumstances, and the object thereof is to suitably exclude an optical film including a defect when the optical film is bonded to an optical display substrate, and the accuracy of the exclusion.
- An optical display unit manufacturing method and an optical display unit manufacturing system are provided.
- the manufacturing method of the optical display unit of the present invention is as follows: A long sheet product in which a release film is bonded to an optical film via an adhesive layer is cut into a predetermined shape, leaving the release film, and an adhesive layer of a predetermined shape obtained by the cutting and An optical film unit with an adhesive made of an optical film is a method for producing an optical display unit by peeling from the release film and bonding it to an optical display substrate on the adhesive layer side, In the process of transporting the sheet product, an estimated transport distance when the position specifying information provided in the sheet product is transported from the first position on the transport upstream side to the second position on the transport downstream side of the first position; Comparing the measured transport distance between the first position and the second position obtained by detecting the position specifying information using the detection means at each of the first position and the second position, The conveyance process of the sheet product is corrected so that the actually measured conveyance distance is within a predetermined range of the predicted conveyance distance.
- the predicted transport distance when transporting from the first position to the second position, and the distance between the first position and the second position obtained by detecting the position specifying information using the detection unit If the measured transport distance is not within the predetermined range of the predicted transport distance, the sheet product is transported so that the actual transport distance is within the predetermined range of the predicted transport distance. Processing can be corrected. In other words, since the conveyance control can be corrected by actually detecting the conveyance distance of the sheet product, it can be cut into a piece of optical film with an adhesive having a predetermined shape that accurately corresponds to the optical display substrate to be bonded. .
- the position specifying information is a mark, and examples thereof include laser marks by laser marking, magic ink marks by magic marking, ink marks by inkjet printing means, labels, scratches, cuts, punched holes, and the like. Further, when the sheet product is provided in advance, for example, a two-dimensional code, a label, a barcode, a line, a hole, a distance value, and the like can be given.
- the detection means is configured according to the position specifying information, and includes, for example, a combination of an imaging means and an image analysis means, a photodetector, a barcode reader, a means for detecting a hole (for example, a gear), a means for detecting a distance value, and the like. It is done.
- the “predetermined range” in the “predicted transport distance within the predetermined range” is set according to the accuracy requirement of skip cut.
- the lower limit value and the upper limit value are 100 mm or less, more preferably 50 mm or less, and even more preferably 20 mm or less. is there.
- the predicted transport distance is calculated based on a detection result of the detection unit at the first position and a transport control unit for the transport unit that transports the sheet product.
- the transfer control means controls the transferring means so that the position specifying information is detected at the second position.
- the transport amount in this case corresponds to the predicted transport distance.
- the conveying means conveys the sheet product according to the conveyance amount.
- the predicted transport distance and the actual transport distance should be the same, but as shown in the above-mentioned problem, the predicted transport distance and the actual transport distance may be greatly different. In the present application, this is preferably improved. is doing.
- the actually measured transport distance is calculated based on the detection results of the transport distance measuring means for measuring the transport distance of the sheet product and the detecting means for each of the first position and the second position.
- the conveyance distance of the sheet product can be measured by the conveyance distance measuring unit with the detection of the position specifying information at the first position as the starting point and the detection of the position specifying information at the second position as the end point.
- the detection means at the second position is provided on the downstream side or the upstream side in the transport direction of the cutting means.
- the sheet product at the cutting position may be stopped, which is a cause of errors in the transport distance. Therefore, by installing the detection means at the second position either before or after the cutting means, it is possible to suitably correct the conveyance process in consideration of the conveyance distance error including the influence of the half-cut process.
- the position specifying information is provided in advance in the sheet product, and the sheet product is wound in a roll shape.
- the position specifying information is the same as that described above.
- the position where the position specifying information is formed is not particularly limited, and may be, for example, an end portion in the sheet product width direction or a central portion.
- the position specifying information is provided in the sheet product on the upstream side of the conveyance from the first position.
- the means for forming the position specifying information is configured according to the type of the position specifying information, and examples thereof include a laser marker, an ink jet printer, a magic, a labeler, a punching means, and a cutter. Further, even if the position specifying information is provided in advance in the sheet product, the position specifying information can be newly formed in the manufacturing process. The position where the position specifying information is provided does not substantially interfere with the function of the detecting means at the first position, and the position specifying information may be formed immediately before the detection processing by the detecting means. On the other hand, position specifying information may be formed.
- the error fluctuates due to, for example, long-time operation or the like and the position specifying information (sometimes referred to as a pseudo defect) is not accurately excluded, an alarm sound, an alarm lamp, etc. Because the notification is made to the user, it can be known that the error has increased. As a result, the operator can analyze the error variation of the manufacturing system, and the analysis data can be effectively used for adjustment and maintenance of the apparatus. In addition, the operator can adjust various devices to prevent outflow of defects.
- the position specifying information sometimes referred to as a pseudo defect
- the sheet product includes a defect inherent in the pressure-sensitive adhesive layer and / or the optical film, and the optical film piece with the pressure-sensitive adhesive having a predetermined shape that eliminates the defect. There is a configuration to cut.
- the pressure-sensitive adhesive layer and / or optical film in which the defect is present can be skip-cut with high accuracy, and a predetermined-shaped pressure-sensitive adhesive-attached optical film piece in which the defect is eliminated can be suitably obtained.
- the defect can be used as the position specifying information.
- the release film before the first position, is peeled off from the sheet product to perform defect inspection of the optical film and the pressure-sensitive adhesive layer, and then released after the defect inspection.
- the release film is peeled off from the sheet product to perform defect inspection of the optical film and the pressure-sensitive adhesive layer, and then released after the defect inspection.
- the release film can be removed and defect detection (inspection) of the optical film and the pressure-sensitive adhesive layer can be performed. Therefore, it is not necessary to consider the phase difference inherent in the release film and the defects such as foreign matter and scratches attached to or existing in the release film, and the defect detection (inspection) of the optical film and the pressure-sensitive adhesive layer can be performed.
- another optical display unit manufacturing system includes: A long sheet product in which a release film is bonded to an optical film via an adhesive layer is cut into a predetermined shape, leaving the release film, and an adhesive layer of a predetermined shape obtained by the cutting and A system for producing an optical display unit by peeling an optical film piece with an adhesive made of an optical film from the release film and bonding it to an optical display substrate on the adhesive layer side, Conveying means for conveying the sheet product; A transport control means for controlling the transport means; In the process of transporting the sheet product, an estimated transport distance when the position specifying information provided in the sheet product is transported from the first position on the transport upstream side to the second position on the transport downstream side of the first position; A comparison comparing the measured transport distance between the first position and the second position obtained by detecting the position specifying information using the detection means at each of the first position and the second position.
- Correction means for correcting the conveyance processing of the sheet product so that the actually measured conveyance distance is within a predetermined range of the predicted conveyance distance;
- Cutting means for cutting the sheet product into the optical film piece with the adhesive having the predetermined shape,
- a peeling means for peeling the optical film piece with an adhesive from a release film, It is the structure which has the bonding means which bonds the said optical film piece with an adhesive from which the said release film peeled to an optical display board
- the sheet product is cut into pieces of optical film with an adhesive having a predetermined shape by a cutting means, and then the release film is peeled off from the optical film piece with an adhesive by a peeling means, and the adhesive means is bonded by a bonding means.
- It is the structure which bonds the adhesive layer side of the optical film piece with an agent to an optical display substrate.
- it has the conveyance means which conveys a sheet product, and the conveyance control means which controls a conveyance means.
- the comparison unit includes the predicted conveyance distance when the position specifying information provided in the sheet product is conveyed from the first position on the upstream side of the conveyance to the second position on the downstream side of the conveyance from the first position, and the first This is a function of comparing the measured transport distance between the first position and the second position obtained by detecting the position specifying information using the detection means at each of the position and the second position.
- the correction means is a function for correcting the sheet product conveyance process so that the actually measured conveyance distance is within a predetermined range of the predicted conveyance distance.
- the predicted transport distance is calculated based on the detection result of the first position detection means and the transport control means for the transport means. Further, the actually measured transport distance is calculated based on the detection results of the transport distance measuring means for measuring the transport distance of the sheet product and the detecting means for each of the first position and the second position.
- the transport distance measuring unit can be configured by an encoder or the like that detects the number of rotations of a feed unit (for example, a roller pair) that forms part of the transport unit.
- the detection means at the second position is provided on the downstream side or the upstream side in the transport direction of the cutting means.
- position specifying information forming means for providing position specifying information to the sheet product on the upstream side of conveyance from the first position.
- informing means for informing when the actually measured transport distance is not within the predetermined range of the predicted transport distance.
- the sheet product includes a defect inherent in the pressure-sensitive adhesive layer and / or the optical film, and the optical film piece with the pressure-sensitive adhesive having a predetermined shape that eliminates the defect.
- a detection device that detects defects, and a sheet product that is cut by the cutting means so as to eliminate defects detected by the detection device, and a sheet product that is half-cut by the cutting means is obtained.
- the structure which excludes the optical film and adhesive layer containing a fault part is preferable.
- a peeling means for peeling a release film from the sheet product Means for inspecting defects of the optical film and the pressure-sensitive adhesive layer after the release film is peeled; There exists the structure which has further the bonding means which bonds a release film on the said adhesive layer after the said defect test
- optical display substrate of the present invention examples include a liquid crystal panel composed of a glass substrate unit of a liquid crystal cell, an organic EL light emitting substrate, and the like.
- FIG. 3 is a flowchart of a method for manufacturing the optical display unit of the first embodiment.
- 6 is a flowchart of a method for manufacturing the optical display unit of the second embodiment. It is a figure for demonstrating the manufacturing system of Embodiment 1.
- FIG. It is a figure for demonstrating the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing system of Embodiment 2.
- FIG. It is a figure for demonstrating the apparatus structure of the manufacturing
- FIG. 1 shows a flowchart of a method for manufacturing the optical display unit of the first embodiment.
- FIG. 3 shows an example of the apparatus configuration of the manufacturing system.
- the manufacturing system of Embodiment 1 includes first and second pre-inspection peeling devices 13 and 23 and first and second release film sticking devices 15 and 25 in the configuration of the manufacturing system of Embodiment 2 to be described later. There is no configuration example. Further, as another embodiment of the manufacturing system of the first embodiment, a configuration in which the first and second defect inspection devices 14 and 24 are not provided can be exemplified.
- optical film As the optical film provided on the optical display substrate of the present invention, for example, various optical films used in a liquid crystal display device can be used. Two or more of a polarizer, a retardation film, a viewing angle compensation film, a brightness enhancement film, and these films can be used. An optical film laminated in combination is exemplified. A transparent film for protection (for example, a polarizer protective film described later) may be laminated on the surface of these films. Further, an adhesive layer is formed on one surface of the optical film so as to be attached to the optical display substrate, and a release film for protecting the adhesive layer is provided. In addition, a surface protective film may be provided on the other surface of the optical film via an adhesive layer or directly.
- the release film is peeled off from the pressure-sensitive adhesive layer formed on one surface of the optical film to which it is bonded, and the surface protective film is peeled off from the optical film together with the pressure-sensitive adhesive layer to which it is bonded.
- an optical film in which an adhesive layer is laminated may be referred to as an optical film with an adhesive, and a release film (or a surface protective film and an adhesive layer that adheres this to the optical film) is further laminated thereon.
- the formed film may be referred to as a sheet product.
- the first sheet product F1 has a laminated structure in which a first optical film F11 and a first release film F12 are laminated via a first pressure-sensitive adhesive layer F14.
- FIG. 9 further shows a laminated structure of the first sheet product having the surface protective film F13.
- the first optical film F11 includes a first polarizer F11a, a first film F11b having an adhesive layer (not shown) on one side thereof, and an adhesive layer (not shown) having the other side. 2 film F11c.
- the first and second films F11b and F11c are, for example, polarizer protective films (for example, triacetyl cellulose film, PET film, etc.).
- the second film F11c is bonded to the optical display substrate surface side via the first adhesive F14 (at this time, the first release film F12 is peeled off).
- a surface treatment can be applied to the first film F11b. Examples of the surface treatment include a hard coat treatment, an antireflection treatment, a treatment for the purpose of prevention of sticking, diffusion or antiglare, and the like.
- the first release film F12 is provided via the second film F11c and the first pressure-sensitive adhesive layer F14.
- the surface protection film F13 is provided through the 1st film F11b and the adhesive layer F15. Specific configurations of the first and second films F11b and F11c will be described later. Below, the laminated structure of a polarizer and a polarizer protective film may be called a polarizing plate.
- the following processes are carried out in an isolation structure isolated from the factory, and the cleanliness is maintained. In particular, it is important that the cleanliness is maintained in the bonding step of bonding the optical film to the optical display unit.
- the first sheet material F1 is fed out from the first roll stock prepared and installed, and conveyed to the downstream side of the optical display unit manufacturing system of the present invention.
- the first conveying device 12 that conveys the first sheet product F1 includes, for example, a nip roller pair, a guide roller, a rotation driving device, an accumulating device A, a sensor device, a control device, and the like.
- the first defect inspection device 14 is used to inspect defects or pseudo defects of the first sheet product F1 (substantially the first optical film F11 and the first pressure-sensitive adhesive layer F14).
- the defect inspection method here, for example, there is a method in which transmitted light and / or reflected light are imaged and processed on both surfaces of the first sheet product F1.
- the first sheet product F1 includes a polarizer
- the polarizing film for inspection is arranged so as to be crossed Nicol with the polarization axis of the first sheet product (sometimes referred to as 0 degree cross) for inspection.
- An image of the transmitted light that passes through the polarizing film and the first sheet product F1 is photographed with a CCD camera, and the image processing is performed.
- the range may be referred to as x-degree cross)
- the transmitted light passing through the inspection polarizing film and the first sheet product F1 is imaged with a CCD camera and processed. It is done.
- a known method can be applied to the image processing algorithm, and for example, a defect can be detected by density determination by binarization processing.
- the defect inspection method is not limited to the image capturing and image processing method using the CCD camera, and a method capable of determining the intensity of transmitted light and reflected light, wavelength change, and the like can be employed.
- the first defect inspection apparatus 14 is configured by an area sensor such as a CCD camera, for example, and a plurality of lines are installed according to the width size with respect to the conveyance direction of the first sheet product F1.
- a defect (type, size, number) is detected by image processing analysis for each of the fractionated inspection areas.
- the position coordinates of each detected defect are stored as the position coordinates of the inspection area (fractionated area).
- the defect information configured here includes, for example, defect type, size, number, inspection area coordinates, identification number, image data of the inspection area, and the like, and the captured image data (image data before fractionation) ).
- the defect information is transmitted to the first cutting device 16. Note that the resolution of the position of the defect is increased by reducing the inspection area. Note that the image data captured by the first defect inspection device 14 may be transmitted to the control device 1, and the control device 1 may analyze the image to detect the defect and create defect information.
- the information of the defect obtained by the first defect inspection device 14 is transmitted to the control device 1 and provided to the cutting method by the first cutting device 16 described later.
- the defect information is used to skip the defect.
- the configuration of the defect information and the skip cut in this embodiment will be described later.
- the defect inspection can be performed when the sheet product is manufactured, and the defect information obtained at this time may be directly provided as a barcode on the sheet product, or a separate medium (floppy (registered trademark) disk). , Various media such as CD-RW, storage devices such as hard disks, etc.) can be taken in and sent to the control device 1 of the optical display unit manufacturing system of the present invention.
- the first cutting device 16 leaves the first release film F12 and cuts the surface protective film F13, the pressure-sensitive adhesive layer F15, the first optical film F11, and the first pressure-sensitive adhesive layer F14 of other members into a predetermined size (half-length). Cut).
- the cutting means include a laser device, a cutter, and other known cutting means.
- the control device 1 controls the cutting timing of the first cutting device 16.
- the control device 1 operates the accumulation device A and stops the conveyance after the accumulation device A.
- the control device 1 transmits a cutting command to the first cutting device 16. Based on this command, the first cutting device 16 cuts (half-cuts) the first sheet product F1.
- the control apparatus 1 is comprised so that it may cut
- the first optical film F ⁇ b> 11 including the defect is excluded by a first exclusion device 19 described later, and is configured not to be attached to the liquid crystal panel W.
- FIG. 1, S6 Cleaning step
- the transport mechanism R includes, for example, a transport roller, a transport direction switching mechanism, a rotation drive device, a sensor device, and a control device.
- the polishing cleaning device 10 and the water cleaning device 11 will be described later.
- the steps of the first roll original fabric preparation step, the first inspection step, the first cutting step, the first optical film laminating step, and the cleaning step are preferably performed on a continuous production line.
- the first adhesive-equipped optical film was bonded to one surface of the liquid crystal panel W.
- the reference numeral W1 denotes a liquid crystal panel having the first optical film F11 on the surface.
- Second roll original fabric preparation step (FIG. 1, S11).
- a long second sheet product F2 is prepared as a second roll material.
- the laminated structure of the second sheet product F2 has the same configuration as that of the first sheet product, but is not limited thereto.
- a second optical film F21 and a second release film F22 are laminated via a second pressure-sensitive adhesive layer F24.
- FIG. 9 further shows a laminated structure of the second sheet product having the surface protective film F23.
- the second optical film F21 includes a second polarizer 21a, a third film F21b having an adhesive layer (not shown) on one side thereof, and a fourth film having an adhesive layer (not shown) on the other side.
- F21c Second roll original fabric preparation step
- the third and fourth films F21b and F21c are, for example, polarizer protective films (for example, triacetyl cellulose film, PET film, etc.).
- the fourth film F21c is bonded to the optical display substrate surface side via the second pressure-sensitive adhesive layer F24 (at this time, the second release film F22 is peeled off).
- the third film F21b can be subjected to a surface treatment. Examples of the surface treatment include a hard coat treatment, an antireflection treatment, a treatment for the purpose of prevention of sticking, diffusion or antiglare, and the like.
- the second release film F22 is provided via the fourth film F21c and the second pressure-sensitive adhesive layer F24.
- the surface protection film F23 is provided through the 3rd film F21b and the adhesive layer F25. Specific configurations of the third and fourth films F21b and F21c will be described later.
- the second sheet material F2 is fed out from the prepared and installed second roll, and conveyed to the downstream side of the optical display unit manufacturing system of the present invention.
- the second conveying device 22 that conveys the second sheet product includes, for example, a nip roller pair, a guide roller, a rotation driving device, an accumulating device A, a sensor device, a control device, and the like.
- Second inspection step (FIG. 1, S13, corresponding to a defect detection step).
- the second defect inspection device 24 is used to inspect defects or pseudo defects of the second sheet product F2 (substantially the second optical film F21 and the second pressure-sensitive adhesive layer F24).
- the defect inspection method here is the same as the method using the first defect inspection apparatus 14 described above.
- Second cutting step (FIG. 1, S14).
- the second cutting device 26 cuts the surface protection film F23, the pressure-sensitive adhesive layer F25, the second optical film F21, and the second pressure-sensitive adhesive layer F24 of other members into a predetermined size (half) while leaving the second release film F22. Cut).
- the timing of cutting is controlled by the control device 1 and further configured to cut so as to avoid the defects based on the information on the defects obtained by the second defect inspection device 24. Thereby, the yield of the 2nd optical film F21 improves significantly.
- the second optical film F21 including the defect is configured to be excluded by a second rejection device 29 described later and not attached to the liquid crystal panel W1.
- Second bonding step (FIG. 1, S15).
- the optical film with adhesive (including the surface protective film F23 and the adhesive layer F25) is bonded to a surface different from the surface to which the first optical film F11 of the liquid crystal panel W1 is bonded with the second adhesive layer F24.
- an optical film with a second adhesive including the second optical film F21
- the liquid crystal panel W1 is rotated 90 degrees by the transport direction switching mechanism of the transport mechanism R, and the first optical film.
- F11 and the second optical film F21 have a crossed Nicols relationship.
- the optical film with the second pressure-sensitive adhesive and the liquid crystal panel W1 are sandwiched between rolls and are pressure-bonded.
- the inspection device 30 inspects the liquid crystal panel W12 having the optical film attached to both sides.
- the inspection method include a method of capturing an image and processing an image using reflected light on both surfaces of the liquid crystal panel W12.
- a method of irradiating a light source from one surface of the liquid crystal panel W12 and photographing and processing a transmitted light image by the transmitted light from the other surface is exemplified.
- the defect is detected as a bright spot.
- a method of installing a polarizing film for inspection between the CCD camera and the inspection object is also exemplified. Note that a known method can be applied to the image processing algorithm, and for example, a defect can be detected by density determination by binarization processing.
- the non-defective product of the liquid crystal panel W12 is determined based on the defect information obtained by the inspection apparatus 30.
- the liquid crystal panel W12 determined as non-defective is conveyed to the next mounting process. If a defective product is determined, a rework process is performed, a new optical film is applied, and then inspected.If a good product is determined, the process proceeds to a mounting process. Discarded.
- the optical display is performed by executing the first bonding process between the liquid crystal panel and the first optical film F11 and the second bonding process with the second optical film F21 on a continuous manufacturing line.
- the unit can be suitably manufactured.
- an optical film can be bonded to a liquid crystal panel (optical display substrate) in a clean environment and a high-quality optical display unit. Can be manufactured.
- FIG. 10 shows a system configuration for skip cut confirmation according to the first embodiment.
- FIG. 12 is a flowchart of skip cut accuracy confirmation processing.
- the defect inspection apparatus for detecting defects of the sheet product is used in combination as an apparatus for detecting position specifying information (sometimes referred to as a simulated defect) provided in the sheet product for confirmation of skip cut accuracy.
- position specifying information sometimes referred to as a simulated defect
- An example is shown.
- it can be detected by a position specifying information detecting device provided separately from the defect inspection device.
- the control device 1 has functions such as an image analysis unit 301, a memory 303, a comparison unit 304, a correction unit 305, a conveyance control unit 306, an actually measured conveyance distance calculation unit 307, and a predicted conveyance distance calculation unit 308.
- the transport control means 306 is a function for controlling the transport device 12.
- the image analysis unit 301 has a function of analyzing the image data from the first defect inspection apparatus 14 and the imaging unit 202 to obtain the type of defect, the coordinate position of the sheet product, the coordinate position of the pseudo defect, and the like.
- Various types of data are stored in the memory 303, and for example, measurement data of the encoder 302 that measures the rotation amount of the feeding unit 12b that constitutes a part of the conveying unit of the sheet product F1 is stored.
- the feeding means 12b is composed of a pair or a plurality of roll pairs, and is configured to feed while sandwiching the sheet product F1.
- the feeding means 12b is also controlled by the transport control means 306.
- the actually measured transport distance calculating means 307 is an encoder between the position where the pseudo defect is detected by the first defect inspection apparatus 14 (first position) and the position where the pseudo defect is detected again by the imaging means 202 (second position).
- the conveyance amount measured by 302 is calculated. This transport amount corresponds to the actually measured transport distance. For example, when the measurement of the encoder 302 is started from the time when the pseudo defect is detected at the first position, and the measurement is finished at the time when the pseudo defect is detected again at the second position, the measurement amount of the encoder 302 is measured. Is obtained as the actually measured transport distance. Further, the encoder 302 is always in a measurement state, and can be calculated by subtracting the measurement value at the time when the pseudo defect is detected at the first position from the measurement value at the time when the pseudo defect is detected at the second position. Good.
- the predicted transport distance calculating unit 308 predicts from the position (first position) where the pseudo defect is detected by the first defect inspection apparatus 14 to the position (second position) where the pseudo defect is detected again by the imaging unit 202.
- the transport amount is calculated. This transport amount corresponds to the predicted transport distance.
- the transport amount is set from experience values such as test operation and actual operation. Based on this transport amount, the feeding means 12b is controlled.
- the comparison means 304 is a function that compares the predicted transport distance with the actually measured transport distance and determines whether or not the actually measured transport distance is within a predetermined range of the predicted transport distance.
- the correction unit 305 has a function of correcting the sheet product conveyance process so that the actually measured conveyance distance is within a predetermined range of the predicted conveyance distance.
- the correction unit 305 corrects the measurement function of the encoder, for example. This correction process may be performed automatically or by an operator's input operation.
- the timing for attaching a pseudo defect include, for example, adjustment before the start of manufacturing, periodic execution during manufacturing, maintenance, arbitrary time when it is desired to check the accuracy of defect cutting, and the like.
- This timing may be set in advance, or may be configured to arbitrarily set the timing with a manual switch. This makes it possible to easily mark a pseudo defect automatically or using a manual switch as compared with a conventional configuration in which a temporary defect is handwritten with magic.
- the pseudo defect is attached using the position specifying information forming unit 201 on the upstream side of the defect inspection apparatus 14.
- a predetermined pseudo defect is given to the sheet product in advance, and the sheet product to which this pseudo defect is attached can be used for the optical display unit manufacturing system of the present invention.
- the position specifying information forming unit 201 can be omitted in the system of the present invention.
- the pseudo defect marked on the first sheet product F1 is detected by the defect inspection apparatus 14 (S42).
- the first sheet product F1 is conveyed by the feeding unit 12b on the downstream side in the conveyance direction.
- the encoder 302 measures the rotation amount (conveyance amount) of the feeding means 12 b and the measurement data is recorded in the memory 303.
- the first sheet product F1 with the pseudo defect is conveyed downstream. Then, based on the skip cut control command from the control device 1, the conveying device 12 and the cutting device 16 are controlled, and the first sheet product F1 including the pseudo defect is skip cut (S44).
- the pseudo defect subjected to the skip cut process is detected by the imaging unit 202 installed on the downstream side in the transport direction of the cutting device 16 (S45). By this detection, the actually measured transport distance is calculated (S46).
- step S47 it is determined whether or not the actually measured transport distance is within a predetermined range of the predicted transport distance. If the measured transport distance is within the predetermined range of the predicted transport distance, the process returns to step S40, and if not, correction processing is performed (S48).
- FIG. 11 shows a system configuration for skip cut confirmation.
- FIG. 13 is a flowchart of the skip cut accuracy confirmation process. The description of the configuration similar to that of the first embodiment is omitted or briefly described.
- the imaging means 202 is installed on the upstream side in the transport direction of the cutting device 16.
- the pseudo defect marked on the first sheet product F1 is detected by the defect inspection apparatus 14 (S42).
- the first sheet product F1 is conveyed by the feeding unit 12b on the downstream side in the conveyance direction.
- the encoder 302 measures the rotation amount (conveyance amount) of the feeding means 12 b and the measurement data is recorded in the memory 303.
- the first sheet product F1 to which the pseudo defect is attached is conveyed downstream, and the pseudo defect is detected by the imaging unit 202 installed on the upstream side of the cutting device 16 in the conveyance direction (S50). By this detection, the actually measured transport distance is calculated (S51).
- step S52 it is determined whether or not the actually measured transport distance is within a predetermined range of the predicted transport distance. If the measured transport distance is within the predetermined range of the predicted transport distance, the process returns to step S40, and if not, correction processing is performed (S53).
- FIG. 14 shows a system configuration for skip cut confirmation.
- 15 and 16 are flowcharts of the skip cut accuracy confirmation process.
- the method for forming the pseudo defect is not particularly limited, but the one attached by the laser device is preferable from the viewpoint of the defect size of the pseudo defect, the size of which member is formed, and the position control.
- the laser output can be changed depending on the member of the sheet product, and a pseudo defect can be created in the surface position of the sheet product (first and second sheet products), the inside of the stack, and the like.
- the pseudo defects can be formed on the sheet product by the above-described position specifying information forming means, which is exemplified as the position specifying information.
- the false defect portion marked on the sheet product (first sheet product F1, second sheet product F2) is detected (inspected) (S102).
- This is defect detection by the defect inspection apparatus (14, 24).
- the sheet products (F1, F2) are conveyed to the cutting device (16, 26), and are subjected to a cutting process so as to eliminate the pseudo defect portion (S103). That is, a pseudo defect is detected by the defect inspection device (14, 24), defect information (pseudo defect information) from the defect inspection device (14, 24) is transmitted to the control device 1, and the cutting timing by the control device 1 is transmitted.
- the disconnection process is executed by the control.
- the cutting device (16, 26) cuts the sheet product (F1, F2) so as to eliminate the defect. Specifically, cutting is performed as follows.
- the manufacturing system shown in FIG. 14 includes a first conveying device 12 that conveys a first sheet product F1 (including the first optical film F11) from an upstream side to a downstream side in the conveying direction, a marking device 201 that creates a pseudo defect, and a pseudo First defect inspection device 14 for inspecting defects, cutting device for cutting sheet products, imaging means 202 (CCD camera) for imaging the cut first sheet products F1, imaging (image) data imaged by imaging means 202 And the position information of the pseudo defect detected by the first defect inspection device 14 is the position information given by the marking device 201.
- Position information determination means 204 (one function of the control device 1) for determining whether or not they match, so that when the position information does not match, the position information matches. (Is one function of the control device 1, corresponding to the correction means) cut position correcting means 205 for correcting the cross-sectional position is configured to have a like.
- the marking device 201 adds pseudo defects, for example, at regular intervals or arbitrarily, and the first defect inspection device 14 detects the pseudo defects.
- the first sheet product F1 is conveyed to the first cutting device 16 by the first conveying device 12.
- the 1st cutting device 16 is the structure which stops and cut
- FIG. With this accumulating device A, the above-described inspection process can be performed without stopping the conveyance of the first sheet product F1.
- the first cutting device 16 is controlled to cut the first sheet product with a predetermined length. Then, the positional relationship between the pseudo defect position (inspection area coordinates) included in the transmitted defect information and the next cutting position is determined, and cutting is performed. This will be described with reference to FIG.
- FIG. 17 is a diagram for explaining an example of the skip cut performed during the continuous operation.
- the long first sheet material F1 is cut at a predetermined length (a).
- the predetermined length (a) is set in accordance with the size of bonding to the liquid crystal panel (optical display substrate).
- a defect or a pseudo defect exists more than 100 mm on the upstream side in the transport direction from the next cutting position (broken line). That is, it is cut at the next cutting position (broken line). And in order to exclude a fault or a pseudo defect, it cut
- the margin value is not required to be taken into consideration, or the margin value is reduced, the cutting distance from the defect or the pseudo defect is set to be small, and the defect cutting accuracy can be confirmed periodically. Therefore, the yield of the optical film is good, and there is no risk that the optical film with the first pressure-sensitive adhesive including the defect or the pseudo defect will be bonded to the liquid crystal panel W without considering the margin value.
- a defect or a pseudo defect is present more than 100 mm downstream from the next cutting position (broken line) in the transport direction, it is cut as a defective product. That is, without being cut at the next cutting position (broken line), in order to eliminate the defect or the pseudo defect, it is cut at a position of 100 mm upstream from the defect or the pseudo defect (illustrated by a one-dot chain line).
- the first sheet product F1 including the cut pseudo defect is imaged.
- the imaging unit 202 is configured by an area sensor such as a CCD camera, and the captured image data is transmitted to the control apparatus 1.
- the pseudo defect detecting means 203 which is one function of the control device 1, detects the pseudo defect by performing image processing and analysis on the captured (image) data.
- the detection method and detection accuracy are the same as the defect detection by the first defect inspection apparatus 14.
- the position information determination unit 204 (corresponding to the comparison unit), which is a function of the control device 1, determines whether or not the detected position information of the pseudo defect matches the position information of the pseudo defect provided by the marking device 201. Judging. For example, the pseudo defect image data (fractionated inspection area image data) detected by the pseudo defect detection means 203 and the inspection area coordinates thereof, and the defect information image data (minute) detected by the first defect inspection device 14. The inspection area image data) and the inspection area coordinates are compared, and it is determined whether or not they match. If they match, the process returns to step S100 to wait for the next accuracy confirmation instruction. On the other hand, if they do not match, the process proceeds to the next step in order to correct the cutting position in order to prevent the risk of the defect or pseudo-defect flowing out downstream.
- the image data of the pseudo defect detected by the pseudo defect detecting means 203 and the inspection area coordinates thereof are configured to match the image data of the defect information detected by the defect inspection apparatus and the inspection area coordinates thereof, An optical film with a pressure-sensitive adhesive containing defects or pseudo defects can be accurately eliminated. According to the above operation, in the case where the bonding process between the optical film with adhesive and the optical display substrate is continuously executed, defect elimination can be automatically executed with high accuracy.
- the control device 1 stores the displacement amount per operation time. Intelligent control that automatically corrects the amount of misalignment can be executed.
- an alarm device for warning sound, warning sound, alarm lamp lighting / flashing, warning display, etc., when those pseudo defect positions do not match
- an alarm device for warning sound, warning sound, alarm lamp lighting / flashing, warning display, etc., when those pseudo defect positions do not match
- the marking device 201 adds pseudo defects, for example, at regular intervals or arbitrarily, and the pseudo defects are detected by the first defect inspection device 14.
- the defects are preferably attached to the surface and visible with the naked eye.
- the pseudo defect information includes, for example, the type, size, number, inspection area coordinates, identification number, and image data of the inspection area of the pseudo defect, and is associated with the image data captured by the first defect inspection apparatus 14. The The information on the pseudo defect is transmitted to the control device 1.
- the control device 1 commands the cutting timing to the first cutting device 16 in the same manner as the above operation.
- This cutting timing is set so that the accuracy of the cutting process can be accurately confirmed for the pseudo defect portion. For example, it is set to cut at a distance of 100 mm upstream of the conveyance direction and 100 mm downstream of the defect position.
- the pseudo defect detected by the first defect inspection apparatus 14 is the center position of the first sheet product F1 cut to a length of 200 mm in the conveyance direction (position of a length of 100 mm). ).
- the pseudo defect position is expected to be shifted from the center position of the length in the conveyance direction of the first sheet product F1.
- the amount of deviation can be measured, the accuracy of skip cutting can be confirmed, and the cutting position can be corrected so that the amount of deviation can be kept within a certain range.
- the first sheet product F1 cut to a length of 200 mm in the conveying direction (corresponding to F in FIG. 18) is picked up by the image pickup means 202, and the pseudo defect detection means 203 performs image processing / analysis. Then, a pseudo defect is detected.
- the imaging unit 202 can take an image of the cut first sheet product F1, analyze it, and automatically detect pseudo defects.
- the pseudo defect detecting means 203 measures the distance between the central portion of the detected pseudo defect and the cut surface (end portion) in the transport direction. If the measured distance (corresponding to the lengths L1 and L2 in FIG. 18) is in the range of 40% to 60% of the length of the cut first sheet product F1, the pseudo defect is cut. It is determined that it exists in the central portion of the one-sheet product F1, and it is determined that the detected position information of the pseudo defect coincides with the position information of the pseudo defect provided by the marking device 201.
- the above-mentioned “range of 40% to 60% of 200 mm” is an example, and can be changed depending on the configuration of the apparatus system, transport distance, inspection area area, etc., for example, set to 45% to 55%, 30% to 70% You can also
- the cutting position is corrected (cutting timing is corrected).
- L1 is 45% of F
- L2 is 70% of the length of F
- the control device 1 may be realized by a cooperative action between a software program and hardware resources such as a CPU and a memory. In this case, program software, processing procedures, various settings, and the like are stored in the memory in advance.
- the control device 1 can be configured by a dedicated circuit, firmware, or the like.
- the control device 1 is composed of a plurality of computers (concepts including a personal computer and a microcomputer), each of which is a defect inspection device (14, 24), a cutting device (16, 26), and a transport device (12, 22).
- the accumulator A may be arranged.
- the defect portion can be surely eliminated by taking into consideration various apparatus errors, control errors, mechanical errors generated during continuous / stop operation, etc. in a manufacturing system such as a defect inspection apparatus, an optical film transport apparatus, and a cutting apparatus.
- a manufacturing system such as a defect inspection apparatus, an optical film transport apparatus, and a cutting apparatus.
- the cutting position is automatically corrected, so there is no need to eliminate extra optical films that do not contain defects, and the yield of optical films can be reduced. It can be greatly improved.
- the notification step for example, when the error fluctuates due to long-time operation or the like and the pseudo defect is not accurately eliminated, the error is greatly increased because the operator is notified by an alarm sound, an alarm lamp, or the like. You can know that As a result, the operator can analyze the error variation of the manufacturing system, and the analysis data can be effectively used for adjustment and maintenance of the apparatus.
- the marking process is performed in the manufacturing system.
- the present invention is not particularly limited to this, and for example, a pseudo defect is formed in the roll sheet manufacturing line of the first sheet product. It can also be configured as follows.
- defect information inspection area coordinates, defect type, size, etc.
- code information for example, QR code, bar code
- FIG. 2 shows a flowchart of the manufacturing method of the optical display unit of the second embodiment.
- FIG. 4 shows a configuration of an optical display unit manufacturing system according to the second embodiment. Processing similar to that of the first embodiment will be omitted or briefly described.
- FIG. 2 1st roll original fabric preparation process (FIG. 2, S1) and a conveyance process (FIG. 2, S2) are the same as that of Embodiment 1.
- FIG. 2 1st roll original fabric preparation process (FIG. 2, S1) and a conveyance process (FIG. 2, S2) are the same as that of Embodiment 1.
- FIG. 2 1st roll original fabric preparation process (FIG. 2, S1) and a conveyance process
- the first pre-inspection peeling device 13 peels the release film F12 (H11 in FIG. 5) from the conveyed first sheet product F1. Details of the peeling mechanism will be described later.
- the first defect inspection apparatus 14 inspects defects of the first sheet product F1 (substantially the first optical film F11 and the first pressure-sensitive adhesive layer F14) after the release film removing step. It is not necessary to consider the retardation inherent in the release film F12, and the defect inspection of the first optical film F11 and the first pressure-sensitive adhesive layer F14 can be performed.
- the method of defect inspection is as described above.
- the optical film with the first pressure-sensitive adhesive (first optical film F11 and first pressure-sensitive adhesive layer F14) including defects is excluded by a first exclusion device 19 described later, and is configured not to be attached to the liquid crystal panel W. .
- the 1st release film bonding apparatus 15 bonds the release film F12a (refer FIG. 5) to the 1st optical film F11 via the 1st adhesive layer F14 after a 1st fault test process.
- the detail of the 1st release film bonding apparatus 15 is mentioned later.
- First cutting step (FIG. 2, S26).
- the first cutting device 16 leaves the release film F12a, and the surface protective film F13, the adhesive layer F15, the first optical film F11, and the first adhesive layer of other members.
- F14 is cut into a predetermined size.
- the 1st bonding apparatus 18 is liquid crystal panel W with the 1st adhesive layer F14 for the optical film (including surface protection film F13 and adhesive layer F15) with the 1st adhesive after the release film H12 was peeled. Paste to. At the time of bonding, as will be described later, the optical film with the first pressure-sensitive adhesive and the liquid crystal panel W are sandwiched by a roll and are pressure bonded.
- FIG. 2nd roll original fabric preparation process (FIG. 2, S11) and a conveyance process (FIG. 2, S12) are the same as that of Embodiment 1.
- the second pre-inspection peeling device 23 peels the release film F22 (H21 in FIG. 7) from the second sheet product F2 being conveyed. Details of the peeling mechanism will be described later.
- the second defect inspection device 24 inspects defects of the second sheet product F2 (substantially the second optical film F21 and the second pressure-sensitive adhesive layer F24) after the release film removing step. It is not necessary to consider the phase difference inherent in the release film F22 and the defects such as foreign matter and scratches attached to or existing in the release film F22, and the defect inspection of the second optical film F21 and the second adhesive layer F24 can be performed.
- the method of defect inspection is as described above.
- the optical film with the second pressure-sensitive adhesive (second optical film F21 and second pressure-sensitive adhesive layer F24) including the defects is excluded by a second exclusion device 29 described later, and is not attached to the liquid crystal panel W1. .
- the 2nd mold release film bonding apparatus 25 bonds the mold release film F22a (refer FIG. 7) to the 2nd optical film F21 via the 2nd adhesive layer F24 after a 2nd fault test process.
- the detail of the 2nd release film bonding apparatus 25 is mentioned later.
- the second cutting device 26 leaves the release film F22a, and the surface protective film F23, the adhesive layer F25, the second optical film F21, and the second adhesive layer of other members. F24 is cut into a predetermined size.
- the 2nd bonding apparatus 28 is liquid crystal panel W1 with the 2nd adhesive layer F24 for the 2nd optical film with adhesive from which the release film F22a peeled (including surface protection film F23 and adhesive layer F25).
- the first optical film F11 is bonded to a surface different from the surface to which the first optical film F11 is bonded.
- FIG. 5 is a diagram illustrating the first transport device 12, the first pre-inspection peeling device 13, the first defect inspection device 14, the first release film sticking device 15, and the first cutting device 16.
- FIG. 6 is a view showing the first peeling device 17, the first sticking device 18, and the first exclusion device 19.
- FIG. 7 is a diagram illustrating the second transport device 22, the second pre-inspection peeling device 23, the second defect inspection device 24, the second release film sticking device 25, and the second cutting device 26.
- FIG. 8 is a diagram illustrating the second peeling device 27, the second sticking device 28, and the second exclusion device 29.
- the isolation structure 50 is composed of a transparent material wall and a frame structure.
- the blower 40 is installed on the ceiling of the isolation structure 50.
- the blower 40 includes a HEPA filter and blows air with high cleanness into the partition wall structure 50.
- An air discharge opening 50a for discharging the internal air to the outside is provided at the bottom of the wall surface of the partition wall structure 50.
- a filter can be provided on the opening surface to prevent intruders from the outside.
- the polishing cleaning apparatus 10 can remove and clean the surface adhering foreign matter by polishing both surfaces of the liquid crystal panel W with polishing means (not shown). Examples of the adhering foreign matter include glass fine pieces, fiber pieces, and the like.
- the water cleaning device 11 is configured to clean both surfaces of the liquid crystal panel W with water using a brush and then dry the surface.
- the first roll of the long first sheet product F1 is installed on a roller gantry that is linked to a motor or the like so as to rotate freely or at a constant rotational speed.
- the rotation speed is set by the control device 1 and the drive is controlled.
- the first transport device 12 is a transport mechanism that transports the first sheet product F1 to the downstream side.
- the first transport device 12 is controlled by the control device 1.
- the first pre-inspection peeling device 13 has a configuration in which the release film F12 is peeled from the conveyed first sheet product F1 and wound on a roll 132.
- the winding speed around the roll 132 is controlled by the control device 1.
- the peeling mechanism 131 has a knife edge portion with a sharp tip, and the release film F12 is wound around the knife edge portion and transferred in reverse, thereby peeling the release film F12 and removing the release film F12. It is comprised so that the 1st sheet material F1 after peeling may be conveyed in a conveyance direction.
- the first defect inspection device 14 performs defect inspection after the release film F12 is peeled off.
- the first defect inspection device 14 detects the defect or the pseudo defect by analyzing the image data captured by the CCD camera, and further calculates the position coordinate.
- the position coordinates of this defect are provided for the skip cut by the first cutting device 16 described later.
- the configuration of defect detection by the first defect inspection apparatus 14 is as described above.
- the first release film bonding apparatus 15 newly bonds the release film F12a to the first optical film F11 via the first pressure-sensitive adhesive layer F14 after the first defect inspection.
- the release film F12a is fed out from the roll 151 of the release film F12a, and the release film F12a and the first optical film F11 are sandwiched by one or a plurality of roller pairs 152.
- a predetermined pressure is applied to bond together.
- the rotation speed, pressure control, and conveyance control of the roller pair 152 are controlled by the control device 1.
- the first cutting device 16 leaves the release film F12a, and the surface protective film 15, the first optical film F11, the first pressure-sensitive adhesive layer F14, and the pressure-sensitive adhesive of other members.
- the layer F15 is half-cut into a predetermined size.
- the cutting timing can be exemplified by a configuration commanded from the control device 1 as described above. Further, the cutting timing can be calculated by the control means of the first cutting device 16. In this case, the defect information is transmitted to the first cutting device 16.
- the first cutting device 16 half-cuts the first sheet product F1 to a predetermined size (a) so as to avoid a defect portion (including a pseudo defect).
- the cut product including the defective portion is rejected as a defective product by the first rejecting device 19 in a subsequent process.
- the first cutting device 16 may continuously cut into a predetermined size while ignoring the existence of the defect. In this case, it can be configured such that the portion is removed without being bonded in the bonding process described later. Control in this case also depends on the function of the control device 1.
- the first cutting device 16 is provided with a holding table that sucks and holds the first sheet product F1 from the back surface, and the laser device is provided above the first sheet product F1.
- the first sheet product F1 is moved in parallel so that the laser is scanned in the width direction, leaving the lowermost release film F12a, the first pressure-sensitive adhesive layer F14, the first optical film F11, the surface protective film F13, and the pressure-sensitive adhesive.
- the layer F15 is half-cut at a predetermined pitch in the transport direction.
- this laser apparatus collects gas (smoke) generated from the air nozzle that blows warm air toward the cutting site and the cutting site conveyed by the hot air so as to be sandwiched from the width direction of the first sheet product F1.
- the smoke collecting duct that smokes is configured integrally.
- the accumulation device A of the transport mechanism moves in the vertical direction so as not to stop the continuous transport of the downstream and upstream first sheet products F1. It is configured. This operation is also controlled by the control device 1.
- the 1st bonding apparatus 18 contains at least the 1st optical film with adhesive (1st optical film F11, 1st adhesive layer F14) from which the release film F12a was peeled by the 1st peeling apparatus 17 after the said cutting process. ) Is bonded to the liquid crystal panel W with the first pressure-sensitive adhesive layer F14.
- the first pressure-sensitive adhesive optical film is bonded to the liquid crystal panel W surface by the pressing roller 181 and the guide roller 182.
- the control device 1 controls the pressing pressure and driving operation of the pressing roller 181 and the guide roller 182.
- the peeling mechanism 171 of the first peeling device 17 has a knife edge portion with a sharp tip, and the release film F12a is peeled off by wrapping the release film F12a around the knife edge portion and reversing it.
- the first optical film F11 after peeling off the release film F12a is configured to be sent out to the liquid crystal panel W surface.
- a state where a tension of 100 N / m or more and 1000 N / m or less is applied to the release film F12a and / or until the first optical film F11 is pressed against the liquid crystal panel W surface after the release film F12a is peeled off.
- the bonding accuracy of the first optical film F11 can be improved.
- the release film F12a may be stretched and broken, and the time until press contact is longer than 3 seconds. And there exists a possibility that the edge part of the 1st optical film peeled from the release film F12a may curve, and a crease
- the peeled release mold F12a is wound around a roll 172. The winding control of the roll 172 is controlled by the control device 1.
- the laminating mechanism is composed of a pressing roller 181 and a guide roller 182 disposed opposite thereto.
- the guide roller 182 is composed of an elastic roller that is rotationally driven by a motor, and is arranged so as to be movable up and down.
- a pressing roller 181 composed of an elastic roller that is rotationally driven by a motor is disposed directly above it so as to be movable up and down.
- the pressing roller 181 is raised to a position higher than the upper surface so as to open a gap between the rollers.
- both the guide roller 182 and the pressing roller 181 may be rubber rollers or metal rollers.
- the liquid crystal panel W is cleaned by various cleaning devices and is transported by the transport mechanism R.
- the transport control of the transport mechanism R is also controlled by the control device 1.
- the first rejection apparatus 19 that excludes the first sheet product F1 including the defects.
- the guide roller 182 moves vertically downward.
- the roller 192 around which the adhesive tape 191 is stretched moves to a fixed position of the guide roller 182.
- the pressing roller 181 is moved vertically downward to press the surface of the first adhesive-attached optical film (including the surface protective film F13 and the adhesive layer F15) including the defects against the adhesive tape 191, and the first adhesive-attached optical film is pressed.
- the film is attached to the pressure-sensitive adhesive tape 191, and the first optical film with a pressure-sensitive adhesive including defects is wound around the roller 193 together with the pressure-sensitive adhesive tape 191.
- the liquid crystal panel W1 manufactured as described above is transported to the downstream side, and the second optical film F21 is bonded thereto.
- the description of the same device configuration will be briefly described.
- the liquid crystal panel W1 is rotated 90 ° by the transport direction switching mechanism of the transport mechanism R and then the second.
- the optical film F21 is bonded.
- each step is processed in a state where the second sheet product F2 is inverted (with the release film on the upper surface), and the second optical film F21 is processed. Is configured to be bonded from the lower side of the liquid crystal panel W1.
- the second transport device 22 is a transport mechanism that transports the second sheet product F2 to the downstream side.
- the second transport device 22 is controlled by the control device 1.
- the second pre-inspection peeling device 23 is configured to peel the release film F22 from the conveyed second sheet product F2 and wind it around a roll 232.
- the winding speed around the roll 232 is controlled by the control device 1.
- the peeling mechanism 231 has a knife edge portion with a sharp tip, and the release film F22 is wrapped around the knife edge portion and transferred in reverse, thereby peeling the release film F22 and removing the release film F22. It is comprised so that the 2nd sheet material F2 after peeling may be conveyed in a conveyance direction.
- the second defect inspection device 24 performs defect inspection after the release film F22 is peeled off.
- the second defect inspection device 24 analyzes the image data picked up by the CCD camera, detects the defect, and calculates its position coordinates. The position coordinates of this defect are provided for the skip cut by the second cutting device 26 described later.
- the second release film laminating apparatus 25 bonds the release film F22a to the second optical film F21 via the second pressure-sensitive adhesive layer F24 after the second defect inspection.
- the release film F22a is unwound from the roll raw fabric 251 of the release film F22a, and the release film F22a and the second optical film F21 are sandwiched by one or a plurality of roller pairs 252, and the roller pair At 252, a predetermined pressure is applied to perform bonding.
- the rotation speed, pressure control, and conveyance control of the roller pair 252 are controlled by the control device 1.
- the second cutting device 26 leaves the release film F22a, and the surface protective film F23, the adhesive layer F25, the second optical film F21, and the second adhesive of other members.
- the layer F24 is half-cut into a predetermined size.
- the second cutting device 26 is, for example, a laser device. Based on the position coordinates of the defect detected in the second defect inspection process, the second cutting device 26 cuts to a predetermined size so as to avoid the defect portion. That is, the cut product including the defective portion is rejected as a defective product by the second rejection device 29 in a later process. Or the 2nd cutting device 26 may ignore the presence of a fault, and may cut continuously to a predetermined size. In this case, it can be configured such that the portion is removed without being bonded in the bonding process described later. Control in this case also depends on the function of the control device 1.
- the second cutting device 26 is provided with a holding table for sucking and holding the second sheet product F2 from the back surface, and a laser device is provided below the second sheet product F2.
- the second sheet product F2 is moved in parallel so as to scan the laser in the width direction, leaving the bottom release film F22a, the surface protective film F23, the adhesive layer F25, the second optical film F21, the second adhesive.
- the layer F24 is cut at a predetermined pitch in the transport direction.
- the accumulation device A of the transport mechanism moves in the vertical direction so as not to stop the continuous transport of the downstream and upstream second sheet products F2. It is configured. This operation is also controlled by the control device 1.
- the 2nd bonding apparatus 28 is the 2nd optical film with adhesive (it includes the surface protection film F23 and the adhesive layer F25) from which the release film F22a was peeled by the 2nd peeling apparatus 27 after the cutting process.
- Two adhesive layers F24 are bonded to the liquid crystal panel W1.
- the second pressure-sensitive optical film is bonded to the surface of the liquid crystal panel W1 by the pressing roller 281 and the guide roller 282.
- the control device 1 controls the pressing pressure and driving operation of the pressing roller 281 and the guide roller 282.
- the structure of the 2nd peeling apparatus 27 and the 2nd bonding apparatus 28 is a function structure similar to the above-mentioned 1st peeling apparatus 17 and the 1st bonding apparatus 18.
- the second rejection apparatus 29 that excludes the second sheet material F2 including the defects.
- the guide roller 282 moves vertically upward.
- the roller 292 around which the adhesive tape 291 is stretched moves to a fixed position of the guide roller 282.
- the pressing roller 281 vertically upward, the second optical film with a pressure-sensitive adhesive (including the surface protective film F23 and the pressure-sensitive adhesive layer F25) is pressed against the pressure-sensitive adhesive tape 291, and the second pressure-sensitive adhesive optical film is A second adhesive-coated optical film including defects is attached to the adhesive tape 291 and wound around the roller 293 together with the adhesive tape 291.
- the liquid crystal panel W12 provided with the first and second optical films F11 and F21 is conveyed to the inspection device 30.
- the inspection device 30 performs inspection on both sides of the liquid crystal panel W12 that has been conveyed.
- the inspection contents include surface foreign matter and dirt on the optical film, foreign matter inside the laminated film, air bubbles, breakage, dirt, and the like, and are configured by known reflection inspection means, transmission inspection means, and the like.
- each device is calculated by, for example, a method in which a sensor is arranged at a predetermined position and detected, or the rotary member of the transport device (12, 22) or the transport mechanism R is detected by a rotary encoder or the like. Is calculated as follows.
- the optical film with the first adhesive is attached from the upper surface of the liquid crystal panel W
- the optical film with the second adhesive is attached from the lower surface of the liquid crystal panel W. It is not limited to this affixing structure, The structure which affixes a 1st optical film with an adhesive from the lower surface of the liquid crystal panel W, and then affixes an optical film with a 2nd adhesive on the upper surface of the liquid crystal panel W can also be performed.
- Automatic inspection equipment that realizes defect inspection is an apparatus that automatically inspects defects (also referred to as defects) of sheet-like products. It irradiates light and reflects the reflected or transmitted light image with a line sensor or two-dimensional image. The defect detection is performed based on the acquired image data obtained through an imaging unit such as a TV camera. Further, the image data is acquired in a state where the inspection polarizing film is interposed in the optical path between the light source and the imaging unit.
- the polarization axis (for example, polarization absorption axis) of the polarizing film for inspection is in a state (crossed Nicols) orthogonal to the polarization axis (for example, polarization absorption axis) of the polarizer of the sheet product to be inspected. Be placed.
- crossed Nicols a black image is input from the imaging unit if there is no defect, but if there is a defect, that part will not be black (recognized as a bright spot). Therefore, a defect can be detected by setting an appropriate threshold value. In such bright spot detection, defects such as surface deposits and internal foreign matter are detected as bright spots.
- the cutting step of the present invention is not limited to the cutting method.
- the bonding process of bonding a sheet product to an optical display substrate after cutting the bonding method using a roll pair has been described, but the bonding process of the present invention is not limited to that method.
- the pressure-sensitive adhesive layer is not particularly limited, but can be formed of an appropriate pressure-sensitive adhesive such as an acrylic type. Low moisture absorption and heat resistance due to prevention of foaming and peeling phenomenon due to moisture absorption, deterioration of optical characteristics due to thermal expansion difference, prevention of liquid crystal cell warpage, and formation of a high-quality and durable image display device. It is preferable that it is an adhesive layer excellent in property. Moreover, it can be set as the adhesion layer etc. which contain microparticles
- the adhesive layer may be provided on a necessary surface as necessary. For example, when referring to a polarizing plate comprising a polarizer and a polarizer protective layer, the adhesive layer is adhered to one or both surfaces of the polarizer protective layer as necessary. A layer may be provided.
- release film examples include various thin films such as various plastic films, rubber sheets, paper, cloth, non-woven fabrics, nets, foam sheets, metal foils, laminates thereof, and silicone or long chains as necessary. Appropriate conventional ones such as those coated with an appropriate release agent such as alkyl-based, fluorine-based or molybdenum sulfide can be used.
- the surface protective film for example, various thin films such as various plastic films, rubber sheets, paper, cloth, non-woven fabrics, nets, foam sheets and metal foils, laminates thereof, and silicone or long chain alkyls as necessary
- an appropriate one according to the prior art such as one coated with an appropriate release agent such as fluorine-based or molybdenum sulfide, can be used.
- the optical display unit according to the present invention can be preferably used for forming an image display device such as a liquid crystal display device, an organic EL display device, or a PDP.
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Abstract
Description
光学フィルムに粘着剤層を介して離型フィルムが貼り合わされた長尺のシート製品を、当該離型フィルムを残して所定形状に切断し、当該切断して得られた所定形状の粘着剤層および光学フィルムからなる粘着剤付光学フィルム片を、前記離型フィルムから剥離して粘着剤層側で光学表示基板に貼り合わせて光学表示ユニットを製造する方法であって、
前記シート製品を搬送する過程において、当該シート製品に設けられた位置特定情報を搬送上流側の第1位置から当該第1位置よりも搬送下流側の第2位置まで搬送する際の予測搬送距離と、当該第1位置および当該第2位置のそれぞれで検出手段を用いて当該位置特定情報を検出することで得られた当該第1位置から当該第2位置間の実測搬送距離と、を比較し、
前記実測搬送距離が、前記予測搬送距離の所定範囲内になるように、前記シート製品の搬送処理を補正することを特徴とする。
光学フィルムに粘着剤層を介して離型フィルムが貼り合わされた長尺のシート製品を、当該離型フィルムを残して所定形状に切断し、当該切断して得られた所定形状の粘着剤層および光学フィルムからなる粘着剤付光学フィルム片を、前記離型フィルムから剥離して粘着剤層側で光学表示基板に貼り合わせて光学表示ユニットを製造するシステムであって、
前記シート製品を搬送する搬送手段と、
前記搬送手段を制御する搬送制御手段と、
前記シート製品を搬送する過程において、当該シート製品に設けられた位置特定情報を搬送上流側の第1位置から当該第1位置よりも搬送下流側の第2位置まで搬送する際の予測搬送距離と、当該第1位置および当該第2位置のそれぞれで検出手段を用いて当該位置特定情報を検出することで得られた当該第1位置から当該第2位置間の実測搬送距離と、を比較する比較手段と、
前記実測搬送距離が、前記予測搬送距離の所定範囲内になるように、前記シート製品の搬送処理を補正する補正手段と、
前記シート製品を、前記所定形状の粘着剤付光学フィルム片に切断する切断手段と、
前記粘着剤付光学フィルム片を、離型フィルムから剥離する剥離手段と、
前記離型フィルムが剥離された前記粘着剤付光学フィルム片を、粘着剤層側で光学表示基板に貼り合せる貼合手段と、を有する構成である。
前記離型フィルムが剥離された後に、前記光学フィルムおよび前記粘着剤層の欠点検査する手段と、
前記欠点検査後に、前記粘着剤層に離型フィルムを貼り合せる貼合手段と、をさらに有する構成がある。
F2 第2シート製品
F11 第1光学フィルム
F11a 第1偏光子
F11b 第1フィルム
F11c 第2フィルム
F12 第1離型フィルム
F13 表面保護フィルム
F14 第1粘着剤層
F21 第2光学フィルム
F21a 第2偏光子
F21b 第3フィルム
F21c 第4フィルム
F22 第2離型フィルム
F23 表面保護フィルム
F24 第2粘着剤層
W 液晶パネル(光学表示基板)
1 制御装置
10 研磨洗浄装置
11 水洗浄装置
12 第1搬送装置
13 第1検査前剥離装置
14 第1欠点検査装置
15 第1離型フィルム貼合装置
16 第1切断装置
17 第1剥離装置
18 第1貼合装置
19 第1排除装置
22 第2搬送装置
23 第2検査前剥離装置
24 第2欠点検査装置
25 第2離型フィルム貼合装置
26 第2切断装置
27 第2剥離装置
28 第2貼合装置
29 第2排除装置
201 マーキング装置
202 撮像手段
203 擬似欠点検出手段
204 位置情報判断手段
205 切断位置補正手段
301 画像解析手段
302 エンコーダ
303 メモリ
304 比較手段
305 補正手段
306 搬送制御手段
307 実測搬送距離算出手段
308 予測搬送距離算出手段
本発明の実施形態1について以下に説明する。図1に実施形態1の光学表示ユニットの製造方法のフローチャートを示す。図3に製造システムの装置構成の一例を示す。実施形態1の製造システムは、後述する実施形態2の製造システムの構成の内、第1、第2検査前剥離装置13、23、第1、第2離型フィルム貼付装置15、25を備えていない構成例である。また、実施形態1の製造システムの別実施形態として、第1、第2欠点検査装置14、24を備えていない構成も例示できる。
本発明の光学表示基板に設けられる光学フィルムは、例えば、液晶表示装置に用いられる各種光学フィルムを用いることができ、偏光子、位相差フィルム、視角補償フィルム、輝度向上フィルム、それらフィルムの2以上の組み合わせ積層された光学フィルムが例示される。これらフィルムの表面には、保護用の透明フィルム(例えば、後述の偏光子保護フィルム等)が積層されたものである場合がある。また、光学フィルムの一方表面には、光学表示基板に貼り付けられるように、粘着剤層が形成され、この粘着剤層を保護するための離型フィルムが設けられる。また、光学フィルムのその他方表面には、粘着剤層を介してまたは直接に表面保護フィルムが設けられる場合がある。これらフィルムの具体的構成は後述する。なお、前記離型フィルムは、それが接着する前記光学フィルムの一方表面に形成される粘着剤層から剥離し、前記表面保護フィルムは、それが接着する前記粘着剤層と共に前記光学フィルムから剥離する。以下において、粘着剤層が積層された光学フィルムを粘着剤付光学フィルムと称することがあり、これにさらに離型フィルム(またはさらに表面保護フィルムおよびこれを光学フィルムに接着する粘着剤層)が積層されたフィルムをシート製品と称することがある。
(1)第1ロール原反準備工程(図1、S1)。長尺の第1シート製品を第1ロール原反として準備する。第1ロール原反の幅は、光学表示基板の貼り合わせサイズに依存している。図9に示すように、第1シート製品F1の積層構造は、第1光学フィルムF11と、第1離型フィルムF12とが、第1粘着剤層F14を介して積層されている。図9ではさらに、表面保護フィルムF13を有する第1シート製品の積層構造を示す。例えば、第1光学フィルムF11は、第1偏光子F11aと、その一方面に接着剤層(不図示)を介した第1フィルムF11bと、その他方面に接着剤層(不図示)を介した第2フィルムF11cとで構成されている。
第1実施例のスキップカット方法およびスキップカット精度の確認処理について説明する。図10は、実施例1のスキップカット確認のためのシステム構成である。図12は、スキップカット精度の確認処理のフロー図である。ここでは、シート製品の欠点を検出する欠点検査装置を、スキップカット精度の確認のために、シート製品に設けられている位置特定情報(模擬欠点と称することがある)を検出する装置として併用する例を示している。位置特定情報の種類に応じて、欠点検査装置とは別に設けた位置特定情報検出装置で検出することもできる。
撮像工程(S104)。切断された擬似欠点を含む第1シート製品F1を撮像する。第1欠点検査装置14と同様に、撮像手段202は、CCDカメラ等エリアセンサで構成され、撮像された撮像(画像)データは、制御装置1に送信される。
欠点検出装置、搬送装置、切断装置、制御装置等の精度確認を行う場合に以下の動作が例示される。まず、マーキング装置201で、例えば、一定間隔あるいは任意に、擬似欠点を付し、この擬似欠点を第1欠点検査装置14で検出する。欠点は、表面に付され肉眼でも視認できることが好ましい。第1欠点検査装置14の検査エリア範囲は、例えば、フィルム搬送方向5mm×フィルム幅方向5mm=25mm2に設定されている。擬似欠点の情報は、例えば、擬似欠点の種類、サイズ、個数、検査エリア座標、識別番号、検査エリアの画像データ等で構成され、第1欠点検査装置14で撮像された画像データと紐付けされる。擬似欠点の情報は、制御装置1に送信される。
また、上記第1切断工程および第2切断工程の別実施形態を以下に説明する。この実施形態は、上記の第1検査工程、第2検査工程を備えていない場合に特に有効である。第1および第2ロール原反の幅方向の一方の端部には、所定ピッチ単位(例えば1000mm)に第1、第2シート状製品の欠点情報(検査エリア座標、欠点の種類、サイズ等)がコード情報(例えばQRコード、バーコード)として付されている場合がある。このような場合、切断する前段階で、このコード情報を読み取り、解析して欠点部分を避けるように、第1、第2切断工程において所定サイズに切断する。この場合、コード情報読み取り装置、解析装置は、欠点の検出装置に相当する。
本発明の実施形態2について以下に説明する。図2に実施形態2の光学表示ユニットの製造方法のフローチャートを示す。図4に実施形態2における光学表示ユニットの製造システムの構成を示す。実施形態1と同様の処理については省略または簡単に説明する。
以下に、実施形態2の製造方法を実現する好適な製造システムの一例について説明する。図5は、第1搬送装置12、第1検査前剥離装置13、第1欠点検査装置14、第1離型フィルム貼付装置15、第1切断装置16について示す図である。
欠点検査を実現する自動検査装置は、シート状製品の欠点(欠陥とも称される)を自動で検査する装置であり、光を照射し、その反射光像や透過光像をラインセンサーや2次元TVカメラなどの撮像部を介して取得し、取得された画像データに基づいて、欠点検出を行う。また、光源と撮像部の間の光路中に検査用偏光フィルムを介在させた状態で画像データを取得する。通常、この検査用偏光フィルムの偏光軸(例えば、偏光吸収軸)は、検査対象であるシート製品の偏光子の偏光軸(例えば、偏光吸収軸)と直交する状態(クロスニコル)となるように配置される。クロスニコルに配置することで、仮に欠点が存在しなければ撮像部から全面黒の画像が入力されるが、欠点が存在すれば、その部分が黒にならない(輝点として認識される)。従って、適宜のしきい値を設定することで、欠点を検出することができる。このような輝点検出では、表面付着物、内部の異物等の欠点が輝点として検出される。また、この輝点検出のほかに、検査対象物に対して透過光画像をCCD撮像し画像解析することで異物検出する方法もある。また、検査対象物に対して反射光画像をCCD撮像し画像解析することで表面付着異物を検出する方法もある。
上記の粘着剤層は、特に限定されるものではないが、アクリル系等の従来に準じた適宜な粘着剤にて形成することができる。吸湿による発泡現象や剥がれ現象の防止、熱膨脹差等による光学特性の低下や液晶セルの反り防止、ひいては高品質で耐久性に優れる画像表示装置の形成性等の点により、吸湿率が低くて耐熱性に優れる粘着層であることが好ましい。また、微粒子を含有して光拡散性を示す粘着層などとすることができる。粘着層は必要に応じて必要な面に設ければよく、例えば、偏光子と偏光子保護層からなる偏光板について言及するならば、必要に応じて、偏光子保護層の片面または両面に粘着層を設ければよい。
上記の離型フィルムとしては、例えば各種プラスチックフィルム、ゴムシート、紙、布、不織布、ネット、発泡シートや金属箔、それらのラミネート体等の適宜な薄葉体を、必要に応じシリコーン系や長鎖アルキル系、フッ素系や硫化モリブデン等の適宜な剥離剤でコート処理したものなどの、従来に準じた適宜なものを用いうる。
表面保護フィルムとしては、例えば各種プラスチックフィルム、ゴムシート、紙、布、不織布、ネット、発泡シートや金属箔、それらのラミネート体等の適宜な薄葉体を、必要に応じシリコーン系や長鎖アルキル系、フッ素系や硫化モリブデン等の適宜な剥離剤でコート処理したものなどの、従来に準じた適宜なものを用いうる。
Claims (17)
- 光学フィルムに粘着剤層を介して離型フィルムが貼り合わされた長尺のシート製品を、当該離型フィルムを残して所定形状に切断し、当該切断して得られた所定形状の粘着剤層および光学フィルムからなる粘着剤付光学フィルム片を、前記離型フィルムから剥離して粘着剤層側で光学表示基板に貼り合わせて光学表示ユニットを製造する方法であって、
前記シート製品を搬送する過程において、当該シート製品に設けられた位置特定情報を搬送上流側の第1位置から当該第1位置よりも搬送下流側の第2位置まで搬送する際の予測搬送距離と、当該第1位置および当該第2位置のそれぞれで検出手段を用いて当該位置特定情報を検出することで得られた当該第1位置から当該第2位置間の実測搬送距離と、を比較し、
前記実測搬送距離が、前記予測搬送距離の所定範囲内になるように、前記シート製品の搬送処理を補正することを特徴とする光学表示ユニットの製造方法。 - 前記予測搬送距離が、前記第1位置における検出手段の検出結果および前記シート製品を搬送する搬送手段に対する搬送制御手段に基づいて算出される請求項1記載の光学表示ユニットの製造方法。
- 前記実測搬送距離が、前記シート製品の搬送距離を測定する搬送距離測定手段と、前記第1位置および第2位置のそれぞれの検出手段の検出結果に基づき算出される請求項1または2記載の光学表示ユニットの製造方法。
- 前記第2位置における検出手段が、前記切断手段の搬送方向下流側または上流側に設けられている請求項1から3のいずれかに記載の光学表示ユニットの製造方法。
- 前記位置特定情報が前記シート製品に予め設けられ、当該シート製品がロール状に巻かれている請求項1から4のいずれかに記載の光学表示ユニットの製造方法。
- 前記第1位置より搬送上流側で、前記位置特定情報を前記シート製品に設ける請求項1から5のいずれかに記載の光学表示ユニットの製造方法。
- 前記実測搬送距離が、前記予測搬送距離の所定範囲内にない場合に、その旨を報知する請求項1から6のいずれかに記載の光学表示ユニットの製造方法。
- 前記シート製品が、前記粘着剤層および/または前記光学フィルムに内在する欠点を含んでおり、当該欠点を排除した前記所定形状の粘着剤付光学フィルム片に切断する請求項1から7のいずれかに記載の光学表示ユニットの製造方法。
- 前記第1位置の前に、前記シート製品から離型フィルムを剥離して前記光学フィルムおよび前記粘着剤層の欠点検査を行ない、次いで、欠点検査後に離型フィルムを粘着剤層に貼り合せる請求項1から8のいずれかに記載の光学表示ユニットの製造方法。
- 光学フィルムに粘着剤層を介して離型フィルムが貼り合わされた長尺のシート製品を、当該離型フィルムを残して所定形状に切断し、当該切断して得られた所定形状の粘着剤層および光学フィルムからなる粘着剤付光学フィルム片を、前記離型フィルムから剥離して粘着剤層側で光学表示基板に貼り合わせて光学表示ユニットを製造するシステムであって、
前記シート製品を搬送する搬送手段と、
前記搬送手段を制御する搬送制御手段と、
前記シート製品を搬送する過程において、当該シート製品に設けられた位置特定情報を搬送上流側の第1位置から当該第1位置よりも搬送下流側の第2位置まで搬送する際の予測搬送距離と、当該第1位置および当該第2位置のそれぞれで検出手段を用いて当該位置特定情報を検出することで得られた当該第1位置から当該第2位置間の実測搬送距離と、を比較する比較手段と、
前記実測搬送距離が、前記予測搬送距離の所定範囲内になるように、前記シート製品の搬送処理を補正する補正手段と、
前記シート製品を、前記所定形状の粘着剤付光学フィルム片に切断する切断手段と、
前記粘着剤付光学フィルム片を、離型フィルムから剥離する剥離手段と、
前記離型フィルムが剥離された前記粘着剤付光学フィルム片を、粘着剤層側で光学表示基板に貼り合せる貼合手段と、を有する光学表示ユニットの製造システム。 - 前記予測搬送距離が、前記第1位置の検出手段の検出結果および前記搬送手段に対する搬送制御手段に基づいて算出される請求項10記載の光学表示ユニットの製造システム。
- 前記実測搬送距離が、前記シート製品の搬送距離を測定する搬送距離測定手段と、前記第1位置および第2位置のそれぞれの検出手段の検出結果に基づき算出される請求項10または11記載の光学表示ユニットの製造システム。
- 前記第2位置における検出手段が、前記切断手段の搬送方向下流側または上流側に設けられている請求項10から12のいずれかに記載の光学表示ユニットの製造システム。
- 前記第1位置より搬送上流側で、前記位置特定情報を前記シート製品に設ける位置特定情報形成手段を有する請求項10から13のいずれかに記載の光学表示ユニットの製造システム。
- 前記実測搬送距離が、前記予測搬送距離の所定範囲内にない場合に、その旨を報知する報知手段を有する請求項10から14のいずれかに記載の光学表示ユニットの製造システム。
- 前記シート製品が、前記粘着剤層および/または前記光学フィルムに内在する欠点を含んでおり、当該欠点を排除した前記所定形状の粘着剤付光学フィルム片に切断する請求項10から15のいずれかに記載の光学表示ユニットの製造システム。
- 前記第1位置の前に、前記シート製品から離型フィルムを剥離する剥離手段と、
前記離型フィルムが剥離された後に、前記光学フィルムおおよび前記粘着剤層の欠点検査する手段と、
前記欠点検査後に、前記粘着剤層に離型フィルムを貼り合せる貼合手段と、をさらに有する請求項10から16のいずれかに記載の光学表示ユニットの製造システム。
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| CN200980102820.9A CN101925944B (zh) | 2008-01-29 | 2009-01-27 | 光学显示组件的制造方法及光学显示组件的制造系统 |
| US12/864,254 US8211253B2 (en) | 2008-01-29 | 2009-01-27 | Method of manufacturing optical display unit and manufacturing system of optical display unit |
| EP09706619A EP2244244A1 (en) | 2008-01-29 | 2009-01-27 | Method of manufacturing optical display unit and manufacturing system of optical display unit |
| KR1020107019091A KR101051868B1 (ko) | 2008-01-29 | 2009-01-27 | 광학 표시 유닛의 제조 방법 및 광학 표시 유닛의 제조 시스템 |
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| JP2009010704A JP4737569B2 (ja) | 2008-01-29 | 2009-01-21 | 光学表示ユニットの製造方法および光学表示ユニットの製造システム |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2244244A1 (en) | 2010-10-27 |
| JP4737569B2 (ja) | 2011-08-03 |
| US8211253B2 (en) | 2012-07-03 |
| US20100294418A1 (en) | 2010-11-25 |
| TW200947375A (en) | 2009-11-16 |
| KR20100117089A (ko) | 2010-11-02 |
| JP2009205145A (ja) | 2009-09-10 |
| CN101925944A (zh) | 2010-12-22 |
| TWI354956B (ja) | 2011-12-21 |
| KR101051868B1 (ko) | 2011-07-25 |
| CN101925944B (zh) | 2013-07-10 |
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