[go: up one dir, main page]

WO2021117273A1 - Procédé d'inspection et système d'inspection de stratifié optique allongé - Google Patents

Procédé d'inspection et système d'inspection de stratifié optique allongé Download PDF

Info

Publication number
WO2021117273A1
WO2021117273A1 PCT/JP2020/024847 JP2020024847W WO2021117273A1 WO 2021117273 A1 WO2021117273 A1 WO 2021117273A1 JP 2020024847 W JP2020024847 W JP 2020024847W WO 2021117273 A1 WO2021117273 A1 WO 2021117273A1
Authority
WO
WIPO (PCT)
Prior art keywords
long optical
identification information
optical film
film
printed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/024847
Other languages
English (en)
Japanese (ja)
Inventor
康之 三笠
恭平 松林
田壷　宏和
村上　洋介
剛 神丸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Denko Corp
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 Nitto Denko Corp filed Critical Nitto Denko Corp
Publication of WO2021117273A1 publication Critical patent/WO2021117273A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8854—Grading and classifying of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8854—Grading and classifying of flaws
    • G01N2021/888—Marking defects

Definitions

  • the present invention relates to an inspection method and inspection of a long optical laminate (for example, a polarizing film) in which a first long optical film (for example, a protective film) and a second long optical film (for example, a polarizer) are laminated.
  • a long optical laminate for example, a polarizing film
  • a first long optical film for example, a protective film
  • a second long optical film for example, a polarizer
  • the present invention can read both the first identification information printed on the first long optical film and the second identification information printed on the long optical laminate in the state of the long optical laminate.
  • the present invention relates to an inspection method and an inspection system for a long optical laminate capable of appropriately linking defect information and identification information.
  • a polarizing film used in a liquid crystal display device As a long optical laminate, for example, a polarizing film used in a liquid crystal display device is known.
  • the process from punching a long polarizing film to a polarizing film having a size suitable for the intended use is as follows, for example.
  • a long polarizing film conveyed by a roll-to-roll method is inspected to detect defects existing in the polarizing film.
  • the position of the defect is marked and the polarizing film is wound up.
  • the polarizing film as the final product comes in various sizes according to the user's specifications, but it may be commonly used as a long polarizing film (polarizing film original fabric). Since there are many, a large amount of polarizing film raw fabric is manufactured, and a polarizing film product of a required size is punched out from the polarizing film raw fabric as needed at a later date.
  • Patent Document 1 prints identification information (at least information for identifying the position of the polarizing film in the longitudinal direction) at the widthwise end of the polarizing film. Then, a method for inspecting a polarizing film that links defect information and identification information has been proposed. According to the inspection method described in Patent Document 1, it is possible to appropriately manage defect information of defects generated in the state of the polarizing film.
  • the polarizing film has not only defects generated in the state of the polarizing film in which the protective film and the polarizer are laminated, but also defects generated in the state of the protective film alone (the protective film before being laminated with the polarizer). Exists. Then, a defect generated in the state of the protective film alone may be difficult to detect even if it is inspected in the state of the polarizing film. For this reason, the protective film alone may be inspected, but conventionally, defect information of defects detected by this inspection has not been properly managed. Specifically, the identification information is not printed on the protective film alone and associated with the defect information.
  • knurling When winding the protective film, in order to prevent the occurrence of winding misalignment, loose winding, blocking, gauge band, etc., knurling may be applied to the widthwise end of the protective film to form minute irregularities by laser engraving. (See, for example, Patent Document 2).
  • the present invention has been made to solve the above-mentioned problems of the prior art, and is the first identification information printed on the first long optical film (for example, a protective film) and the long optical lamination.
  • the defect information and the identification information can be appropriately linked.
  • An object of the present invention is to provide an inspection method and an inspection system for a shaku optical laminate.
  • the present inventors have made one of the first identification information printed on the first long optical film and the second identification information printed on the long optical laminate. Is printed by the inkjet method and one of them is printed by laser engraving, or one of them is printed by the inkjet method using transparent ink and the other is printed by the inkjet method using colored ink. By doing so, even if the first identification information and the second identification information overlap, they can be read separately, and the present invention has been completed. That is, in order to solve the above-mentioned problems, the present invention includes a first step of inspecting the first long optical film and acquiring first defect information which is defect information of the first long optical film, and the first step.
  • the third step of associating and storing the defect information and the first identification information, and the inspection of the long optical laminate in which the first long optical film and the second long optical film are laminated are inspected and described.
  • the fifth step of printing the identification information and the sixth step of associating and storing the second defect information of the long optical laminate and the second identification information are included and printed in the second step.
  • the first identification information to be printed and the second identification information to be printed in the fifth step are printed by an inkjet method and the other is printed by laser engraving, or one of them is printed.
  • a method for inspecting a long optical laminate which comprises printing by an inkjet method using a transparent ink and printing one of them by an inkjet method using a colored ink.
  • defect information means information including at least the position of a defect.
  • first identification information means information including at least information for specifying the position of the first long optical film in the longitudinal direction.
  • second identification information means information including at least information for specifying the position of the long optical laminate in the longitudinal direction.
  • One of the first identification information and the second identification information is printed by an inkjet method and one of them is printed by laser engraving, or one of them is printed by an inkjet method using transparent ink. , Either one is printed by an inkjet method using colored ink.
  • the transparent ink is an ink that fluoresces when irradiated with light, and a UV ink that fluoresces when irradiated with ultraviolet rays can be exemplified.
  • the first identification information and the second identification information are printed by any of the following methods (1) to (6).
  • 1st identification information Inkjet method using transparent ink
  • 2nd identification information Inkjet method using colored ink
  • 2nd identification information Inkjet method using transparent ink
  • the present inventors have found, even if the first identification information and the second identification information overlap, they can be read separately.
  • the defect information and the identification information can be appropriately linked (the first defect information and the first identification information are linked, and the second defect information and the second identification information are linked). Therefore, for example, by reading the first identification information and using the association between the first defect information and the first identification information stored in the third step, the position of the defect generated in the state of the first long optical film It is possible to punch out the product while avoiding. Further, for example, by reading the second identification information and using the association between the second defect information and the second identification information stored in the sixth step, the position of the defect generated in the state of the long optical laminate can be determined. It is possible to avoid and punch out the product.
  • the first to sixth steps do not necessarily have to be executed in this order. For example, it is possible to execute the first step after executing the second step. It is also possible to execute the fourth step after executing the fifth step.
  • the first identification information is printed by an inkjet method using transparent ink
  • the second identification information is printed by laser engraving.
  • any of the methods (1) to (6) can be used as the printing method of the first identification information and the second identification information.
  • printing the first identification information by an inkjet method using transparent ink and printing the second identification information by laser engraving is the most first identification information and the first. 2 Easy to read by distinguishing from identification information. Therefore, according to the above-mentioned preferable method, the defect information and the identification information are more appropriately linked (the first defect information and the first identification information are linked, and the second defect information and the second identification information are linked. Can be attached).
  • a seventh step of associating and storing the first defect information of the first long optical film and the second identification information of the long optical laminate is further included.
  • the first defect information and the second defect information can be centrally managed based on the second identification information of the long optical laminate. Therefore, after the seventh step is executed, the first length optical laminate is formed by cutting the widthwise end portion of the first length optical film (for example, cutting the knurled portion of the protective film). Even if the identification information is removed, the defect information and the identification information can be appropriately linked (the first defect information, the second defect information, and the second identification information are associated).
  • the second identification information is read and the association between the second defect information and the second identification information stored in the sixth step is used, and the first defect information and the second identification information stored in the seventh step are used.
  • the link with it is possible to punch out the product while avoiding the position of the defect generated in the state of the first long optical film and the position of the defect generated in the state of the long optical laminate. That is, it is possible to save the trouble of reading the first identification information when punching the product.
  • the position of the defect is marked, so that the position of the defect can be visually specified.
  • the present invention can be suitably used when the first long optical film is a protective film, the second long optical film is a polarizer, and the long optical laminate is a polarizing film. ..
  • the present invention can also be used when the first long optical film is a retardation film and the second long optical film is a polarizing film. Further, the present invention can also be used when the first long optical film is a reflective polarizer and the second long optical film is a polarizing film.
  • the portion corresponding to the knurled portion (the portion where the knurled portion is formed, or the portion where the knurled portion is formed, or Even if the first identification information is printed by the inkjet method on the portion where the knurling processed portion is to be formed), the first identification information can be read separately from the unevenness of the knurling processed portion.
  • the second identification information is printed by laser engraving on the portion corresponding to the knurled portion, it may be difficult to distinguish the second identification information from the unevenness of the knurled portion.
  • the nerling processed portion when the nerling processed portion is formed at the widthwise end portion of the first long optical film, the portion corresponding to the nerling processed portion of the first long optical film in the second step. It is preferable to print the first identification information on the screen by an inkjet method. As a result, the effective width of the first long optical film is not narrowed by printing the first identification information, and the yield can be increased. Further, in the present invention, a nerling processed portion is formed at the widthwise end portion of the first long optical film, and in the fifth step, the narling processed portion is inside the first long optical film in the width direction. It is preferable to print the second identification information on the portion of the long optical laminate located in. As a result, the second identification information can be reliably distinguished from the unevenness of the knurled portion and read.
  • the present invention comprises a first inspection apparatus for inspecting a first long optical film and acquiring first defect information which is defect information of the first long optical film.
  • a first printing device that prints first identification information at predetermined intervals in the longitudinal direction of the first long optical film at the widthwise end of the first long optical film, and the first long optical film.
  • a first arithmetic storage device that stores the first defect information and the first identification information in association with each other, and a long optical laminate in which the first long optical film and the second long optical film are laminated.
  • a second inspection device for acquiring the second defect information, which is the defect information of the long optical laminate, and the long optical laminate at the widthwise end of the long optical laminate in the longitudinal direction of the long optical laminate.
  • a second printing device that prints the second identification information at predetermined intervals, and a second arithmetic storage device that stores the second defect information and the second identification information of the long optical laminate in association with each other.
  • One of the first identification information printed by the first printing device and the second identification information printed by the second printing device is printed by an inkjet method, and one of the other is printed by laser engraving. Or, one of them is printed by an inkjet method using transparent ink, and one of them is printed by an inkjet method using colored ink. Also provided as.
  • both the first identification information printed on the first long optical film and the second identification information printed on the long optical laminate can be read in the state of the long optical laminate.
  • the defect information and the identification information can be appropriately linked.
  • FIG. 5 is a perspective view schematically showing a schematic configuration of an inspection system for executing the first step S2 to the third step S4 shown in FIG.
  • FIG. 5 is a perspective view schematically showing a schematic configuration of an inspection system for executing the fourth step S6 to the sixth step S8 shown in FIG.
  • FIG. 5 is a perspective view schematically showing a schematic configuration of an inspection system for executing the seventh step S9 shown in FIG. 1.
  • 4 is a side view schematically showing a schematic configuration example of the first reading device 9 and the second reading device 10 shown in FIG. 4 (side view seen from the width direction of the long optical laminate F2).
  • the schematic configuration of the inspection system for executing the reading step S10, the second fourth step S11 and the sixth step S12 (the fourth step and the sixth step after the execution of the seventh step S9) shown in FIG. 1 is schematically configured. It is a perspective view which shows. It is a figure which shows the printing example of the 1st identification information M and the 2nd identification information N by the inspection method of the long optical laminate which concerns on one Embodiment of this invention. An example of the result of reading the first identification information M of the long optical laminate F2 shown in FIG. 7 by the first reading device 9 is shown. An example of the result of reading the second identification information N of the long optical laminate F2 shown in FIG. 7 by the second reading device 10 is shown.
  • the long optical laminate to be inspected by the inspection method according to the present embodiment is a film in which a first long optical film and a second long optical film are laminated.
  • the first long optical film is a protective film
  • the second long optical film is a polarizer
  • the long optical laminate is a polarizing film
  • the polarizing film as a long optical laminate includes a step of (A) drying a polyvinyl alcohol-based film that has been subjected to a dyeing treatment, a cross-linking treatment, and a stretching treatment to produce a polarizer as a second long optical film. (B) A production including a step of laminating a protective film as a first long optical film on one side or both sides of a second long optical film (polarizer), and (C) a step of heat-treating after laminating. Manufactured by the method.
  • the dyeing treatment, cross-linking treatment, and stretching treatment of the polyvinyl alcohol-based film do not necessarily have to be performed separately, but may be performed at the same time, and the order of each treatment may be arbitrary.
  • a polyvinyl alcohol-based film that has been subjected to a swelling treatment may be used.
  • a polyvinyl alcohol-based film is immersed in a solution containing iodine or a dichroic dye, dyed by adsorbing iodine or a dichroic dye, washed, and stretched in a solution containing boric acid, borax, or the like. It is uniaxially stretched at a magnification of 3 to 7 times and then dried.
  • Examples of the polyvinyl alcohol-based polymer constituting the above-mentioned polyvinyl alcohol-based film include those obtained by polymerizing vinyl acetate and then saponifying it, and vinyl acetate containing a small amount of unsaturated carboxylic acid, unsaturated sulfonic acid, cationic monomer, and the like. Examples thereof include those obtained by copolymerizing a copolymerizable monomer.
  • the average degree of polymerization of the polyvinyl alcohol-based polymer is not particularly limited and any one can be used, but it is preferably 1000 or more, and more preferably 2000 to 5000.
  • the saponification degree of the polyvinyl alcohol polymer is preferably 85 mol% or more, more preferably 98 to 100 mol%.
  • the thickness of the second long optical film (polarizer) to be manufactured is generally 5 to 80 ⁇ m, but the thickness is not limited to this, and the thickness of the second long optical film (polarizer) is not limited to this.
  • the method for adjusting the above is not particularly limited, and ordinary methods such as tenter, roll stretching and rolling can be used.
  • the bonding of the second long optical film (polarizer) and the first long optical film (protective film) is not particularly limited, but for example, an adhesive made of a vinyl alcohol polymer or a hoe This can be done via an adhesive consisting of at least an adhesive consisting of a water-soluble cross-linking agent for vinyl alcohol-based polymers such as acid, borosand, glutaaldehyde, melamine, and oxalic acid.
  • the adhesive layer that attaches the second long optical film (polarizer) and the first long optical film (protective film) is formed as a coating and drying layer of an aqueous solution, but it is necessary when preparing the aqueous solution. Depending on the situation, other additives and catalysts such as acid can also be blended.
  • An appropriate transparent film can be used for the first long optical film (protective film) to be bonded to one side or both sides of the second long optical film (polarizer).
  • a film made of a polymer having excellent transparency, mechanical strength, thermal stability, moisture shielding property and the like is preferably used.
  • the polymer include acetate-based resins such as triacetyl cellulose, polycarbonate-based resins, polyarylates, polyester-based resins such as polyethylene terephthalate, polyimide-based resins, polysulfone-based resins, polyether sulfone-based resins, polystyrene-based resins, polyethylene, and polypropylene.
  • polyolefin-based resins such as, polyvinyl alcohol-based resins, polyvinyl chloride-based resins, polynorbornene-based resins, (meth) acrylic-based resins, polymethylmethacrylate-based resins, and liquid crystal polymers.
  • the film may be produced by a casting method, a calendar method, or an extrusion method.
  • thermoplastic resin having a substituted and / or unsubstituted imide group in the (A) side chain and a (B) side chain.
  • resin composition containing a thermoplastic resin having an unsubstituted phenyl and a nitrile group can be mentioned.
  • Specific examples include a film of a resin composition containing an alternating copolymer composed of isobutylene and N-methylmaleimide and an acrylonitrile / styrene copolymer.
  • the film a film made of a mixed extruded product of the resin composition or the like can be used. Since these films have a small phase difference and a small photoelastic coefficient, problems such as unevenness due to distortion of the long optical laminate (polarizing film) can be eliminated, and since the moisture permeability is small, humidification durability is achieved. Excellent for.
  • Rth [(nx + ny) / 2-nz] ⁇ d (where nx and ny are the main refractive indexes in the film plane, nz is the refractive index in the film thickness direction, and d is the film thickness).
  • a first long optical film (protective film) having a retardation value in the film thickness direction of ⁇ 90 nm to +75 nm is preferably used.
  • the long optical laminate By using a film having a retardation value (Rth) of -90 nm to + 75 nm in the thickness direction, the long optical laminate (polarizing film) is colored (optically) due to the first long optical film (protective film). Coloring) can be almost eliminated.
  • the phase difference value (Rth) in the thickness direction is more preferably ⁇ 80 nm to +60 nm, and particularly preferably ⁇ 70 nm to +45 nm.
  • the first long optical film (protective film) a (meth) acrylic resin is preferable from the viewpoint of polarization characteristics and durability. Further, an acetate-based resin such as triacetyl cellulose is preferable, and a triacetyl cellulose film whose surface is saponified with an alkali or the like is particularly preferable.
  • the first long optical film (protective film) is attached to both sides of the second long optical film (polarizer), the first long optical film (protective film) made of different polymers on the front and back sides is used. May be good.
  • the thickness of the first long optical film is arbitrary, but is generally 500 ⁇ m or less, preferably 1 to 300 ⁇ m, particularly for the purpose of reducing the thickness of the long optical laminate (polarizing film). It is preferably 5 to 200 ⁇ m.
  • the first long optical film (protective film) is subjected to hard coating treatment, antireflection treatment, anti-sticking treatment, diffusion, anti-glare, etc., as long as the object of the present invention is not impaired. May be good.
  • the hard coat treatment is applied for the purpose of preventing scratches on the surface of a long optical laminate (polarizing film), and is excellent in hardness and slipperiness with an appropriate ultraviolet curable resin such as silicone.
  • the cured film can be formed by a method of adding the cured film to the surface of the first long optical film (protective film).
  • the antireflection treatment is applied for the purpose of preventing the reflection of external light on the surface of the long optical laminate (polarizing film), and can be achieved by forming an antireflection film or the like according to the conventional method. it can.
  • sticking prevention aims to prevent adhesion with adjacent layers, and anti-glare treatment reflects external light on the surface of the long optical laminate (polarizing film) to visually recognize the transmitted light of the long optical laminate (polarizing film).
  • It is applied for the purpose of preventing obstruction, for example, the first long optical film (protection) by an appropriate method such as a sandblasting method, a roughening method such as an embossing method, or a method of blending transparent fine particles. It can be formed by imparting a fine concavo-convex structure to the surface of the film).
  • the transparent fine particles include silica and alumina having an average particle size of 0.5 to 20 ⁇ m, titania and zirconia, tin oxide and indium oxide, cadmium oxide and antimony oxide, and examples thereof include conductive inorganic fine particles. It may be used, or organic fine particles composed of crosslinked or uncrosslinked polymer particles or the like can be used.
  • the amount of the transparent fine particles used is generally 2 to 70 parts by mass, particularly 5 to 50 parts by mass, per 100 parts by mass of the transparent resin.
  • the anti-glare layer containing the transparent fine particles can be provided as the transparent protective layer itself, or as a coating layer on the surface of the transparent protective layer.
  • the anti-glare layer may also serve as a diffusion layer (such as a viewing angle compensation function) for diffusing the transmitted light of a long optical laminate (polarizing film) to expand the viewing angle.
  • the antireflection layer, the sticking prevention layer, the diffusion layer, the antiglare layer, and the like described above can be provided as an optical layer made of a sheet or the like provided with these layers, which is separate from the transparent protective layer.
  • FIG. 1 is a flow chart showing a schematic process of an inspection method according to the present embodiment.
  • the inspection method according to the present embodiment includes steps S1 to S4 executed in the manufacturing process of the first long optical film (protective film) and manufacturing of a long optical laminate (polarizing film). It includes steps S5 to S12 executed in the step.
  • steps S1 to S4 executed in the manufacturing process of the first long optical film (protective film) and manufacturing of a long optical laminate (polarizing film). It includes steps S5 to S12 executed in the step.
  • steps S5 to S12 executed in the step.
  • FIG. 2 is a perspective view schematically showing a schematic configuration of an inspection system for executing the first step S2 to the third step S4.
  • the first inspection device 1 included in the inspection system 100 is conveyed by the transfer roll R in a roll-to-roll manner (conveyed in the direction indicated by the thick arrow in FIG. 2).
  • the first long optical film F1 is inspected to acquire the first defect information which is the defect information of the first long optical film F1.
  • the first inspection device 1 is an image pickup means 1a arranged to face the surface of the first long optical film F1 and a first long optical film F1 electrically connected to the image pickup means 1a and acquired by the image pickup means 1a.
  • An image processing means 1b that performs appropriate image processing on a captured image on the surface is provided.
  • the image pickup means 1a a line sensor in which the image pickup elements are linearly arranged along the width direction of the first long optical film F1 or an area sensor in which the image pickup elements are arranged in a matrix can be used.
  • the field of view of the imaging means 1a is set to be equal to or larger than the effective width (width used in the product) of the first long optical film F1.
  • the image processing means 1b extracts a pixel region corresponding to a defect existing in the first long optical film F1 by performing known image processing such as binarization on the captured image.
  • the image processing means 1b specifies the position of the defect (coordinates of the pixel region corresponding to the defect) in the captured image, and acquires at least the information including the position of the specified defect as the first defect information.
  • the acquired first defect information is input to the first arithmetic storage device 4 included in the inspection system 100.
  • the first printing device 2 included in the inspection system 100 is attached to the widthwise end portion (preferably the knurling portion) of the first long optical film F1 in the longitudinal direction of the first long optical film F1.
  • the first identification information M is printed at predetermined intervals (for example, equal intervals of 1 m).
  • FIG. 2 illustrates an example in which the first identification information M1 to M3 are printed in order from the tip end side (downstream side in the transport direction) of the first long optical film F1.
  • the first identification information M is information including information for specifying at least a position in the longitudinal direction of the first long optical film F1.
  • the first identification information M is, for example, a numerical value that increases or decreases in order from the tip end side of the first long optical film F1 (the position in the longitudinal direction of the first long optical film F1 is specified by this numerical value). It is represented by a two-dimensional code or a barcode.
  • the first identification information M includes various information such as information for specifying the position of the first long optical film F1 in the longitudinal direction, the date and time of printing, the serial number of the first long optical film F1, the type of printing process, and the like. It is possible to include incidental information of.
  • the printing of the first identification information M by the first printing device 2 is controlled by the first arithmetic storage device 4.
  • the amount of movement of the first long optical film F1 in the transport direction is measured by a length measuring device 3 using a rotary encoder or the like, and is input to the first arithmetic storage device 4.
  • the first arithmetic storage device 4 transmits a control signal to the first printing device 2 at predetermined intervals based on the movement amount input from the length measuring device 3, and sends a control signal to the first printing device 2 at predetermined intervals. 1
  • the identification information M is printed.
  • the case where the first arithmetic storage device 4 also has a function of controlling the first printing device 2 has been described as an example, but the present invention is not limited to this, and the first arithmetic storage device is not limited to this. It is also possible to adopt a configuration in which a control device other than 4 controls the first printing device 2.
  • the first printing device 2 of the present embodiment prints the first identification information M by an inkjet method.
  • the first printing device 2 of the present embodiment prints the first identification information M by an inkjet method using transparent ink.
  • the first identification information M is printed by an inkjet method using UV ink that emits fluorescence by irradiating ultraviolet rays as transparent ink.
  • an inkjet printer "VJ1000 series” manufactured by Videojet and an inkjet printer "Gravis UX series” manufactured by Hitachi Industrial Equipment Systems Co., Ltd. can be used.
  • the first arithmetic storage device 4 stores the first defect information of the first long optical film F1 and the first identification information M in association with each other. Specifically, it is as follows. For example, the first inspection device 1 detects the defect D1 shown in FIG. 2, identifies the position of the defect D1 in the captured image (coordinates of the pixel region corresponding to the defect D1), and this is the first calculation as the first defect information. It is assumed that the information is input to the storage device 4.
  • the first arithmetic storage device 4 Since the amount of movement of the first long optical film F1 from the length measuring device 3 in the transport direction is input to the first arithmetic storage device 4, the first arithmetic storage device 4 detects the defect D1 (How much the first long optical film F1 is conveyed between the time when the coordinates of the pixel region corresponding to the defect D1 in the captured image are specified) and the time when the first identification information M is printed by the first printing device 2. It is possible to grasp whether or not it is moving in a direction. Based on the amount of movement of the first long optical film F1 between these two time points and the coordinates of the pixel region corresponding to the defect D1 in the captured image, the first arithmetic storage device 4 uses the predetermined first identification information M (FIG.
  • the distance X1 from the first identification information M3) to the defect D1 (distance along the longitudinal direction of the first long optical film F1) can be calculated.
  • the first arithmetic storage device 4 is a distance from the widthwise edge of the first long optical film F1 to the defect D1 (first long optical film) based on the coordinates of the pixel region corresponding to the defect D1 in the captured image.
  • the distance (distance along the width direction of F1) Y1 can be calculated.
  • the first arithmetic storage device 4 stores at least the first identification information M (M3) and the coordinates (X1, Y1) of the defect D1 based on the first identification information M (M3) in association with each other. become.
  • the first long optical film (first long optical film in which the first identification information M is printed on the nerling processing portion by an inkjet method) F1 manufactured in the above-mentioned manufacturing process is wound in a roll shape and is used as a raw material. It is said to be anti-roll.
  • the first long optical film F1 formed as a raw fabric roll is carried to the manufacturing process of the long optical laminate.
  • the original roll of the carried first long optical film F1 is used.
  • FIG. 1 step and No. Includes two steps. In the manufacturing process of the long optical laminate of the present embodiment, No.
  • the fourth step S11 and the sixth step S12 are executed in the two steps. Further, in the manufacturing process of the long optical laminate of the present embodiment, No. The bonding step S5 is executed in one step, and No. The reading step S10 is executed in two steps.
  • (Lasting step S5) No.
  • the original roll of the first long optical film (protective film) F1 is unwound, and the original roll of the second long optical film (polarizer) is unwound.
  • the bonding step S5 the first long optical film F1 is bonded to one side or both sides of the second long optical film via an adhesive or the like as described above, and the first long optical film F1 is bonded to the first long optical film F1.
  • a long optical laminate (polarizing film) F2 in which a second long optical film is laminated is obtained.
  • FIG. 3 is a perspective view schematically showing a schematic configuration of an inspection system for executing the fourth step S6 to the sixth step S8.
  • the second inspection device 5 included in the inspection system 100 is conveyed by the transfer roll R in a roll-to-roll manner (conveyed in the direction indicated by the thick arrow in FIG. 3).
  • the long optical laminate F2 is inspected to acquire the second defect information which is the defect information of the long optical laminate F2.
  • the second inspection device 5 includes an image pickup means 5a and an image processing means 5b like the first inspection device 1 shown in FIG. 2, and has the same functions as the first inspection device 1. Therefore, a detailed description thereof will be given here. Is omitted.
  • the second inspection device 5 specifies the position of the defect (coordinates of the pixel region corresponding to the defect) in the captured image, and acquires at least information including the position of the specified defect as the second defect information.
  • the acquired second defect information is input to the second arithmetic storage device 8 included in the inspection system 100.
  • the second printing device 6 included in the inspection system 100 is moved inward in the width direction from the widthwise end portion of the long optical laminate F2 (preferably, the knurled portion of the first long optical film F1).
  • the second identification information N is printed at predetermined intervals (for example, equal intervals of 1 m) in the longitudinal direction of the elongated optical laminate F2 on the portion of the elongated optical laminate F2 located).
  • FIG. 3 illustrates an example in which the second identification information N1 to N3 are printed in order from the tip end side (downstream side in the transport direction) of the long optical laminate F2.
  • the first identification information M is printed on the first long optical film F1 constituting the long optical laminate F2, but the illustration of the first identification information M is omitted in FIG. 3 for convenience.
  • the second identification information N includes at least information for specifying the position of the long optical laminate F2 in the longitudinal direction, and the first identification including information for specifying at least the position of the first long optical film F1 in the longitudinal direction. Since the other points are the same as those of the first identification information M, unlike the information M, detailed description thereof will be omitted here.
  • the second identification information N printed on the long optical laminate F2 is printed on the same first long optical film F1 on which the first identification information M is printed.
  • the invention is not limited to this.
  • the first long optical film (protective film) F1 is bonded to both sides of the second long optical film (polarizer) to form a long optical laminate (polarizing film) F2, one of the first.
  • the first identification information M is printed on one long optical film (protective film) F1, and the other first long optical film F1 (protective film, which also serves as a retardation film) on which the first identification information M is not printed. It is also possible to print the second identification information N on (good).
  • the first long optical film (protective film) F1 is bonded to both sides of the second long optical film (polarizer), and the retardation film is further bonded to one of the first long optical films.
  • the first identification information M is printed on the other first long optical film (protective film) F1 and the second identification information M is printed on the retardation film. It is also possible to print the information N.
  • the printing of the first identification information M by the first printing device 2 is controlled by the first arithmetic storage device 4
  • the printing of the second identification information N by the second printing device 6 is performed by the second arithmetic storage device. It is controlled by 8. Since the specific control content is the same as the control of printing the first identification information M by the first printing device 2, detailed description thereof will be omitted here.
  • the second printing device 6 of the present embodiment prints the second identification information N by laser engraving.
  • the second printing device 6 for example, various known printing devices having a function of printing by laser engraving using a CO 2 laser can be applied, and therefore detailed description thereof will be omitted here.
  • the second arithmetic storage device 8 stores the second defect information of the long optical laminate F2 and the second identification information N in association with each other. Specifically, since the procedure is the same as when the first arithmetic storage device 4 stores the first defect information and the first identification information M of the first long optical film F1 in association with each other, a detailed description thereof will be given. Although omitted, the second arithmetic storage device 8 uses at least the amount of movement of the long optical laminate F2 in the transport direction input from the length measuring device 7 having the same configuration as the length measuring device 3.
  • the second identification information N (second identification information N3 in the example shown in FIG. 3) and the coordinates (X2, Y2) of the defect D2 based on the second identification information N (N3) are associated and stored. Become.
  • FIG. 4 is a perspective view schematically showing a schematic configuration of an inspection system for executing the seventh step S9.
  • the second arithmetic storage device 8 stores the first defect information of the first long optical film F1 and the second identification information of the long optical laminate F2 in association with each other.
  • the first reading device 9 for reading the first identification information M (FIGS. 4 shows the first identification information M1 to M3) and the second identification information N (the second identification information N in FIG. 4).
  • a second reading device 10 for reading the identification information N1 to N3 (shown) is arranged, and the first identification information M read by the first reading device 9 and the second identification information N read by the second reading device 10 are arranged.
  • the second arithmetic storage device 8 the first defect information of the first long optical film F1 stored in the first arithmetic storage device 4 in advance and the first identification information M are associated (first identification).
  • the relationship between the information M and the coordinates of the defect based on the first identification information M) is input and stored.
  • the first arithmetic storage device 4 and the second arithmetic storage device 8 are electrically connected, and the first arithmetic storage device 4 to the second arithmetic operation are performed.
  • the storage device 8 may be transmitted to the storage device 8, or it may be downloaded from the first arithmetic storage device 4 and manually input to the second arithmetic storage device 8. Further, the amount of movement of the long optical laminate F2 in the transport direction from the length measuring device 11 having the same configuration as that of the length measuring device 3 is input to the second arithmetic storage device 8.
  • the second arithmetic storage device 8 reads the first identification information M by the first reading device 9 based on the amount of movement of the long optical laminate F2 input from the length measuring device 11 in the transport direction (first). The time when the identification information M was input to the second arithmetic storage device 8) and the time when the second identification information N was read by the second reading device 10 (the second identification information N was input to the second arithmetic storage device 8). It is possible to grasp how much the long optical laminate F2 is moving in the transport direction between the time point and the time point). Based on the amount of movement of the long optical laminate F2 between the two time points, the second arithmetic storage device 8 follows the longitudinal direction of the long optical laminate F2 of the first identification information M and the second identification information N.
  • the positional deviation (positional deviation dX between the first identification information M3 and the second identification information N3 in the example shown in FIG. 4) can be calculated. Therefore, the second arithmetic storage device 8 links the first defect information and the first identification information M of the first long optical film F1 stored in advance, and the calculated first identification information M and the second identification information. Based on the positional deviation from N, the first defect information of the first long optical film F1 and the second identification information N of the long optical laminate F2 can be associated and stored. In other words, the second identification information N and the coordinates of the defect based on the second identification information N can be stored in association with each other.
  • the seventh step S9 By executing the seventh step S9 in this way, the first defect information and the second defect information can be centrally managed based on the second identification information N of the long optical laminate F2.
  • the long optical laminate F2 After executing the seventh step S9, the long optical laminate F2 is wound in a roll shape to obtain No. It is carried to two processes.
  • FIG. 5 is a side view schematically showing a schematic configuration example of the first reading device 9 and the second reading device 10 (side view seen from the width direction of the long optical laminate F2).
  • FIG. 5A shows a schematic configuration example of the first reading device 9
  • FIG. 5B shows a schematic configuration example of the second reading device 10.
  • the first reading device 9 includes a UV illumination 91 that emits ultraviolet rays, and an imaging means (area sensor) 92.
  • an imaging means area sensor
  • the first identification information M in the captured image acquired by the imaging means 92 arranged on the same side as the UV illumination 91 (upper side in the example shown in FIG. 5A) with respect to the surface of the long optical laminate F2, the first identification information M
  • the pixel area corresponding to the second identification information N becomes brighter (the pixel area corresponding to the second identification information N becomes darker as in the background), and the first identification information M can be read separately from the second identification information N.
  • the UV illumination 91 for example, one that emits ultraviolet rays having a wavelength of about 200 to 400 nm, preferably ultraviolet rays having a wavelength of about 365 nm can be used.
  • an area sensor with a high-speed shutter having a shutter speed (exposure time) of about 30 to 150 ⁇ sec can be used as the imaging means 92.
  • the second reading device 10 is arranged on one side (lower side in the example shown in FIG. 5 (b)) with respect to the surface of the long optical laminate F2, and is a parallel luminous flux. Is arranged on the other side (upper side in the example shown in FIG. 5B) with respect to the surface of the long optical laminate F2 and receives the light transmitted through the long optical laminate F2.
  • An image pickup means (area sensor) 102 is provided. The parallel light flux emitted from the illumination 101 and irradiated on the surface of the long optical laminate F2 is scattered by the second identification information N printed by laser engraving.
  • the pixel area corresponding to the second identification information N becomes darker (the pixel area corresponding to the first identification information M becomes brighter as in the background), and the second identification information becomes brighter. N can be read separately from the first identification information M.
  • the illumination 101 shown in FIG. 5B is replaced with the illumination that irradiates the diffused light.
  • the reading device as a reading device for reading the first identification information M, the pixel region corresponding to the first identification information M becomes darker in the captured image acquired by the imaging means 102 (corresponding to the second identification information N).
  • the pixel region to be printed becomes bright as in the background), and the first identification information M can be read separately from the second identification information N.
  • FIG. 6 schematically illustrates a schematic configuration of an inspection system for executing the reading step S10, the second fourth step S11, and the sixth step S12 (the fourth step and the sixth step after the execution of the seventh step S9). It is a perspective view which shows. Actually, the first identification information M is printed on the first long optical film F1 constituting the long optical laminate F2, but the illustration of the first identification information M is omitted in FIG. 6 for convenience. ing. As shown in FIG. 6, in the reading step S10, the second identification information N in the second reading device 12 having the same configuration as the second reading device 10 (see FIGS. 4 and 5B) included in the inspection system 100. To read. The read second identification information N is input to the second storage device 8.
  • the second inspection device 13 (imaging means 13a and image processing means 13b) having the same configuration as the second inspection device 5 included in the inspection system 100 is roll-to-roll system by the transport roll R.
  • the long optical laminate F2 conveyed in (conveyed in the direction indicated by the thick line arrow in FIG. 6) is inspected to acquire the second defect information which is the defect information of the long optical laminate F2.
  • the acquired second defect information is input to the second arithmetic storage device 8.
  • the second arithmetic storage device 8 has the second defect information of the long optical laminate F2 acquired by the second inspection device 13 and the second identification information read by the second reading device 12.
  • the second arithmetic storage device 8 uses the amount of movement of the long optical laminate F2 input from the length measuring device 14 having the same configuration as that of the length measuring device 3 in the transport direction, and is second.
  • a long length between the time when the second identification information N is read by the reading device 12 and the time when the defect is detected by the second inspection device 13 (the time when the coordinates of the pixel region corresponding to the defect in the captured image are specified). It is possible to grasp how much the optical laminate F2 is moving in the transport direction, and at least store the second identification information N and the coordinates of the defect based on the second identification information N in association with each other.
  • the case where two inspections (inspection by the second inspection apparatus 5 and inspection by the second inspection apparatus 13) are performed in the manufacturing process of the long optical laminate F2 has been described as an example.
  • the reading step S10, the fourth step S11, and the sixth step S12 may be repeatedly executed in the second and subsequent inspections.
  • the first identification information M is printed by the inkjet method and the second identification information N is printed by laser engraving, as the present inventors have found.
  • the defect information and the identification information are appropriately linked (the first defect information and the first identification information M (and thus the second identification information N) are linked, and the second defect information and the second identification information N are linked. Can be attached).
  • the second identification information N is read, and the association between the second defect information stored in the sixth steps S8 and S12 and the second identification information N is used, and the first defect stored in the seventh step S9 is used.
  • the link between the information and the second identification information N the position of the defect generated in the state of the first long optical film F1 and the position of the defect generated in the state of the long optical laminate F2 can be avoided. It is possible to punch out the product.
  • the inspection method according to the present invention is not limited to the mode in which the first identification information M is printed by the inkjet method and the second identification information N is printed by laser engraving. Either one of the first identification information M and the second identification information N is printed by the inkjet method and the other is printed by laser engraving, or one of them is printed by the inkjet method using transparent ink. Even if printing is performed and one of the other is printed by an inkjet method using colored ink, the first identification information M and the second identification information N can be read separately.
  • the inspection method according to the present embodiment is a string of the first identification information M of the first long optical film F1 (and thus the second identification information N of the long optical laminate F2) and the first defect information.
  • Eighth step of marking the position of a defect in the long optical laminate F2 based on the attachment and the association of the second identification information N and the second defect information of the long optical laminate F2 (not shown in FIG. 1). ) Can also be included.
  • the second identification information N is read, and the positions of the defects included in the first defect information and the second defect information are marked by an inkjet method or marking using the same magic as described in Patent Document 1. It is also possible to apply.
  • the eighth step of marking the position of the defect is marked, so that the position of the defect can be visually specified.
  • FIG. 7 is a diagram showing a printing example of the first identification information M and the second identification information N by the inspection method according to the present embodiment.
  • a protective film made of triacetylcellol (TAC) and a protective film made of acrylic are used as the first long optical film F1, and both sides of the polarizer as the second long optical film are used.
  • TAC triacetylcellol
  • This is a long optical laminate (polarizing film) F2 formed by laminating these first long optical films F1.
  • the acrylic protective film and the TAC protective film are applied to both sides of the polarizer.
  • the second identification information N is printed on the protective film side made of TAC by laser engraving.
  • the circular unevenness shown in FIG. 7 is the knurled portion formed at the widthwise end portion of the acrylic protective film, and the diamond-shaped unevenness is the knurled portion formed at the widthwise end portion of the TAC protective film.
  • the long optical laminate F2 was illuminated by using both the UV illumination 91 provided by the first reading device 9 and the illumination 101 provided by the second reading device 10 at the same time. It is a captured image obtained in the case.
  • FIG. 8 shows an example of the result of reading the first identification information M of the long optical laminate F2 shown in FIG. 7 by the first reading device 9.
  • the pixel area corresponding to the first identification information M becomes brighter (the pixel area corresponding to the second identification information N becomes darker as in the background. ), It can be seen that the first identification information M can be read separately from the second identification information N.
  • FIG. 9 shows an example of the result of reading the second identification information N of the long optical laminate F2 shown in FIG. 7 by the second reading device 10.
  • the pixel area corresponding to the second identification information N becomes darker (the pixel area corresponding to the first identification information M becomes brighter as in the background. ), It can be seen that the second identification information N can be read separately from the first identification information M.
  • the first identification is made to the first long optical film F1 in the second step S2.
  • printing information M it is also possible to print the first identification information M on the part where the knurling processing portion is to be formed before forming the knurling processing portion (that is, to form the knurling processing portion after printing the first identification information M). is there.
  • the case where the inspection of the long optical laminate F2 is executed a plurality of times has been described as an example, but the present invention is not limited to this, and the inspection of the long optical laminate F2 is performed by 1. It can be executed only once.
  • the reading step S10, the fourth step (second time) S11, and the sixth step (second time) S12 shown in FIG. 1 are unnecessary.
  • the reading step S10 is necessary when performing the eighth step of marking the position.
  • the case where the inspection of the first long optical film F1 is performed only once has been described as an example, but the present invention is not limited to this, and the inspection of the long optical laminate F2 is not limited to this. Similarly, it can be executed multiple times.
  • a reading step of reading the first identification information M after the third step S4 shown in FIG. 1, a reading step of reading the first identification information M, a step of acquiring the first defect information as in the first step S2, and As in the third step S4, it is necessary to repeatedly execute the step of associating and storing the first defect information and the first identification information M.
  • the present invention is not limited to this. It is also possible to manage the first defect information based on the first identification information M and manage the second defect information based on the second identification information N without executing the seventh step S9. Specifically, for example, by reading the first identification information M and using the association between the first defect information and the first identification information M stored in the third step S4, the first long optical film F1 can be obtained.
  • the length is increased. It is also possible to punch out the product while avoiding the positions of defects generated in the state of the scale optical laminate F2.
  • the first long optical film F1 is a protective film
  • the second long optical film is a polarizer
  • the long optical laminate F2 is a polarizing film
  • the present invention is not limited to this.
  • the first long optical film F1 may be a retardation film
  • the second long optical film may be a polarizer
  • the first long optical film F1 is a conductive film such as a retardation film, a reflective polarizer, an antireflection film, and an ITO film, for example, a window film manufactured of polyimide or the like
  • the second long optical film May be a polarizing film (a laminate of a polarizer and a protective film).

Landscapes

  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Polarising Elements (AREA)

Abstract

Le problème à résoudre par la présente invention est de permettre la lecture, à partir d'un stratifié optique allongé, à la fois de premières informations d'identification imprimées sur un premier film optique allongé et de secondes informations d'identification imprimées sur le stratifié optique allongé. La solution de l'invention porte sur un procédé comprenant une première étape consistant à acquérir des premières informations de défaut par l'inspection d'un premier film optique allongé (F1), une deuxième étape consistant à imprimer des premières informations d'identification (M) sur le premier film optique allongé, une troisième étape consistant à stocker les premières informations de défaut et les premières informations d'identification en association les unes avec les autres, une quatrième étape consistant à acquérir des secondes informations de défaut par l'inspection d'un stratifié optique allongé (F2) dans lequel le premier film optique allongé est stratifié, une cinquième étape consistant à imprimer des secondes informations d'identification sur le stratifié optique allongé, et une sixième étape consistant à stocker les secondes informations de défaut et les secondes informations d'identification en association les unes avec les autres. Un ensemble d'informations parmi les premières informations d'identification et les secondes informations d'identification est imprimé à l'aide d'un procédé à jet d'encre pendant que l'autre ensemble d'informations est imprimé à l'aide d'une gravure au laser, ou un ensemble d'informations est imprimé à l'aide d'un procédé à jet d'encre utilisant de l'encre transparente pendant que l'autre ensemble d'informations est imprimé à l'aide d'un procédé à jet d'encre utilisant de l'encre colorée.
PCT/JP2020/024847 2019-12-10 2020-06-24 Procédé d'inspection et système d'inspection de stratifié optique allongé Ceased WO2021117273A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-222918 2019-12-10
JP2019222918 2019-12-10

Publications (1)

Publication Number Publication Date
WO2021117273A1 true WO2021117273A1 (fr) 2021-06-17

Family

ID=76328979

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2020/024847 Ceased WO2021117273A1 (fr) 2019-12-10 2020-06-24 Procédé d'inspection et système d'inspection de stratifié optique allongé
PCT/JP2020/045454 Ceased WO2021117670A1 (fr) 2019-12-10 2020-12-07 Procédé d'inspection et système d'inspection de corps stratifié optique long

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/045454 Ceased WO2021117670A1 (fr) 2019-12-10 2020-12-07 Procédé d'inspection et système d'inspection de corps stratifié optique long

Country Status (5)

Country Link
JP (1) JP7522763B2 (fr)
KR (1) KR20220106744A (fr)
CN (1) CN114846320A (fr)
TW (2) TWI834897B (fr)
WO (2) WO2021117273A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117944373A (zh) * 2024-03-12 2024-04-30 合肥德瑞格光电科技有限公司 一种偏光片自动光学检测缺陷喷印系统及其喷印方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7297969B1 (en) * 2003-06-09 2007-11-20 Cognex Technology And Investment Corporation Web marking and inspection system
DE102007043408A1 (de) * 2007-09-12 2009-03-19 Leonhard Kurz Gmbh & Co. Kg Verfahren zur Detektion von Trägerfolienresten oder Trägerfehlstellen sowie Applikationsmaschine
JP2009243911A (ja) * 2008-03-28 2009-10-22 Toray Ind Inc 欠陥検査システム
JP2010534835A (ja) * 2007-07-26 2010-11-11 スリーエム イノベイティブ プロパティズ カンパニー 画像検査システムでの複数プロセスの空間的同期化方法
KR101512142B1 (ko) * 2013-12-31 2015-04-14 (주)엔에스 필름 제조 장치
JP2018146580A (ja) * 2017-03-03 2018-09-20 住友化学株式会社 欠陥マーキング方法及び欠陥マーキング装置、原反の製造方法及び原反、並びにシートの製造方法及びシート

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925609B2 (ja) 1980-02-14 1984-06-19 椿本興業株式会社 水の除鹿装置
JP3974400B2 (ja) * 2002-01-07 2007-09-12 日東電工株式会社 シート状成形体の検査結果記録方法及び検査結果記録システム及びロール状成形体
KR20050013491A (ko) * 2003-07-28 2005-02-04 닛토덴코 가부시키가이샤 시트형상 제품의 검사 방법 및 검사 시스템
JP2005114624A (ja) * 2003-10-09 2005-04-28 Nitto Denko Corp シート状製品の検査方法及びシート状製品の検査システム及びシート状製品及び枚葉物
JP4960161B2 (ja) * 2006-10-11 2012-06-27 日東電工株式会社 検査データ処理装置及び検査データ処理方法
JP2008175940A (ja) * 2007-01-17 2008-07-31 Sekisui Chem Co Ltd 光学フィルムの欠陥のマーキング方法
JP2008256852A (ja) * 2007-04-03 2008-10-23 Nitto Denko Corp 光学フィルム体および光学フィルム体の製造方法
JP5578759B2 (ja) 2007-08-10 2014-08-27 日東電工株式会社 フィルム及びその製造方法
JP2009244064A (ja) * 2008-03-31 2009-10-22 Sumitomo Chemical Co Ltd 偏光フィルムの検査方法
KR20150086633A (ko) * 2014-01-20 2015-07-29 동우 화인켐 주식회사 광학 필름의 검사 장치 및 방법
JP2015225041A (ja) * 2014-05-29 2015-12-14 住友化学株式会社 積層偏光フィルムの欠陥検査方法
JP6641093B2 (ja) * 2015-03-20 2020-02-05 住友化学株式会社 光学フィルム及び積層光学フィルムの欠陥検査方法
KR101898835B1 (ko) * 2015-04-09 2018-09-13 스미또모 가가꾸 가부시키가이샤 적층 광학 필름의 결함 검사 방법, 광학 필름의 결함 검사 방법 및 적층 광학 필름의 제조 방법
TWI739523B (zh) * 2015-07-17 2021-09-11 日商大日本印刷股份有限公司 光學構件用積層體及影像顯示裝置
JP7097666B2 (ja) * 2016-02-02 2022-07-08 日東電工株式会社 フィルムの製造方法および真空成膜装置
JP6970550B2 (ja) * 2017-07-24 2021-11-24 住友化学株式会社 欠陥検査システム及び欠陥検査方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7297969B1 (en) * 2003-06-09 2007-11-20 Cognex Technology And Investment Corporation Web marking and inspection system
JP2010534835A (ja) * 2007-07-26 2010-11-11 スリーエム イノベイティブ プロパティズ カンパニー 画像検査システムでの複数プロセスの空間的同期化方法
DE102007043408A1 (de) * 2007-09-12 2009-03-19 Leonhard Kurz Gmbh & Co. Kg Verfahren zur Detektion von Trägerfolienresten oder Trägerfehlstellen sowie Applikationsmaschine
JP2009243911A (ja) * 2008-03-28 2009-10-22 Toray Ind Inc 欠陥検査システム
KR101512142B1 (ko) * 2013-12-31 2015-04-14 (주)엔에스 필름 제조 장치
JP2018146580A (ja) * 2017-03-03 2018-09-20 住友化学株式会社 欠陥マーキング方法及び欠陥マーキング装置、原反の製造方法及び原反、並びにシートの製造方法及びシート

Also Published As

Publication number Publication date
TW202129265A (zh) 2021-08-01
JPWO2021117670A1 (fr) 2021-06-17
WO2021117670A1 (fr) 2021-06-17
TWI868273B (zh) 2025-01-01
TW202129264A (zh) 2021-08-01
JP7522763B2 (ja) 2024-07-25
KR20220106744A (ko) 2022-07-29
CN114846320A (zh) 2022-08-02
TWI834897B (zh) 2024-03-11

Similar Documents

Publication Publication Date Title
US8078307B2 (en) Apparatus for testing defects of sheet-shaped product having optical film, apparatus for processing test data thereof, apparatus for cutting the same, and production thereof
JP2005114624A (ja) シート状製品の検査方法及びシート状製品の検査システム及びシート状製品及び枚葉物
KR101375428B1 (ko) 적층 필름의 제조 방법, 적층 필름의 결함 검출 방법, 적층필름의 결함 검출 장치, 적층 필름, 및 화상 표시 장치
US8149376B2 (en) Test data processing apparatus and test data processing method
US7850801B2 (en) Layered film fabrication method, layered film defect detection method, layered film defect detection device, layered film, and image display device
US20080193701A1 (en) Optical film products and method for producing optical film products
JP2009244064A5 (fr)
JP5671571B2 (ja) 光学フィルムを有するシート状製品の検査データ処理装置および切断装置
JP5925609B2 (ja) シート状製品の検査システム及びシート状製品の検査方法
JP7628084B2 (ja) 機能フィルムの検査方法、検査システム及び原反ロール
JP7288989B1 (ja) 長尺光学フィルムの検査方法
WO2021117273A1 (fr) Procédé d'inspection et système d'inspection de stratifié optique allongé
JP7299219B2 (ja) マーキング装置、マーキング方法、偏光板の製造方法および偏光板
JP2009080131A (ja) シート状製品の検査方法及びシート状製品の検査システム及びシート状製品及び枚葉物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20900547

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20900547

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP