WO2021172179A1 - Film optique, plaque de polarisation et dispositif d'affichage d'images à électroluminescence organique - Google Patents

Film optique, plaque de polarisation et dispositif d'affichage d'images à électroluminescence organique Download PDF

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WO2021172179A1
WO2021172179A1 PCT/JP2021/006251 JP2021006251W WO2021172179A1 WO 2021172179 A1 WO2021172179 A1 WO 2021172179A1 JP 2021006251 W JP2021006251 W JP 2021006251W WO 2021172179 A1 WO2021172179 A1 WO 2021172179A1
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optical film
group
film
resin
light
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PCT/JP2021/006251
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English (en)
Japanese (ja)
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恵美子 御子柴
笠原　健三
真紀子 齊藤
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コニカミノルタ株式会社
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Priority to JP2022503321A priority Critical patent/JPWO2021172179A1/ja
Priority to CN202180016225.4A priority patent/CN115136045A/zh
Priority to KR1020227018850A priority patent/KR20220097949A/ko
Publication of WO2021172179A1 publication Critical patent/WO2021172179A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C08K5/3445—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/45—Heterocyclic compounds having sulfur in the ring
    • C08K5/46—Heterocyclic compounds having sulfur in the ring with oxygen or nitrogen in the ring
    • C08K5/47—Thiazoles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers

Definitions

  • the present invention relates to an optical film, a polarizing plate, and an organic electroluminescence image display device. More specifically, when applied to an image display device, the present invention has high transparency, prevents light leakage, and is light resistant under harsher environmental conditions.
  • the present invention relates to an optical film or the like having excellent properties and durability.
  • organic electroluminescence hereinafter, also referred to as "organic EL" image display device
  • organic EL organic electroluminescence
  • an antireflection film combining a ⁇ / 4 retardation film and a polarizer is used.
  • a cyclic olefin resin hereinafter, also referred to as “COP”
  • COP cyclic olefin resin
  • reflection leakage occurs at a specific wavelength due to the influence of its wavelength dispersibility. Therefore, in order to suppress reflection leakage, it is necessary to incorporate a layer containing a dye that absorbs light of a specific wavelength (hereinafter, also referred to as “specific wavelength light absorption layer”) in the display.
  • the specific wavelength light absorption layer may be provided anywhere in the display, and may be provided as the ⁇ / 4 retardation film.
  • Patent Document 1 describes a method of adding a dye that absorbs light having a wavelength of about 400 nm to an adhesive layer in order to protect an organic EL element
  • Patent Document 2 improves the brightness and visibility of an organic EL image display device.
  • a method of adding a dye that selectively absorbs light in the vicinity of 470 nm and around 600 nm to the pressure-sensitive adhesive is disclosed.
  • a dye or a UV absorber is mainly added to the pressure-sensitive adhesive, but since the pressure-sensitive adhesive layer is thin, it is difficult to uniformly add the compound for expressing the function.
  • Patent Document 3 describes that a plurality of dye compounds may be put into any layer of the functional layer in order to block ultraviolet rays from the outside and a part of visible light.
  • Patent Document 4 describes that an indole compound is contained in a thickener or the like, and Patent Document 5 describes that a dye compound having a specific structure having a cyano group and an ester group is added to a resin or a functional layer.
  • Patent Document 5 describes that a dye compound having a specific structure having a cyano group and an ester group is added to a resin or a functional layer.
  • the present invention has been made in view of the above problems and situations, and the problem to be solved is that when applied to an image display device, it has high transparency, prevents light leakage, and is light resistant under more severe environmental conditions. It is an object of the present invention to provide an optical film having excellent properties and durability, a polarizing plate provided with the optical film, and an organic electroluminescence image display device.
  • the present inventor is an optical film containing a thermoplastic resin in the process of examining the cause of the above problems, and by containing a compound having a specific structure, the image display device can be used.
  • an optical film having high transparency, preventing light leakage, and having excellent light resistance and durability under harsh environmental conditions can be obtained.
  • An optical film containing a thermoplastic resin An optical film containing a compound having a structure represented by the following general formula (1).
  • Z represents a heteroaryl group having two or more heteroatoms, and may have a substituent.
  • thermoplastic resin is a cyclic olefin resin or an acrylic resin.
  • Items 1 to 6 are characterized in that the compound having the structure represented by the general formula (1) is contained in the range of 0.01 to 20% by mass with respect to the thermoplastic resin.
  • the optical film according to any one of the above.
  • optical film according to any one of items 1 to 7, further comprising a functional layer.
  • optical film according to any one of items 1 to 9, wherein the optical film is a ⁇ / 4 retardation film.
  • a polarizing plate comprising the optical film according to any one of items 1 to 10.
  • An organic electroluminescence image display device comprising the optical film according to any one of items 1 to 10 or the polarizing plate according to item 11.
  • an organic electroluminescent image display device can be provided.
  • a cyclic olefin resin film may be used from the viewpoints of low hygroscopicity and good dimensional stability.
  • the cyclic olefin resin film exhibits flat wavelength dispersion characteristics, it is used as a ⁇ / 4 retardation film for a circular polarizing plate in, for example, an organic electroluminescence (hereinafter, also referred to as “organic EL”) image display device.
  • organic EL organic electroluminescence
  • the reflected light tends to leak in a specific wavelength region (region on the short wavelength side). If the leakage of such reflected light is remarkable, the tint of the reflected light tends to be deteriorated.
  • the present inventors considered adding a dye compound that absorbs light in the wavelength region to the film. Since the organic EL image display device is used even in a high temperature and high humidity environment, it is required to suppress deterioration of the organic EL element due to external light. Further, since the dye compound is also deteriorated by the incident light, the light resistance of the compound itself is also required.
  • the cyano group can lower the energy level of the highest occupied molecular orbital (HOMO), that is, lower the oxidation potential, and thus suppress photooxidation.
  • HOMO highest occupied molecular orbital
  • Sectional drawing which shows the structure of the polarizing plate 100 Disassembled sectional view of the organic EL image display device 200
  • the optical film of the present invention is an optical film containing a thermoplastic resin, and is characterized by containing a compound having a structure represented by the general formula (1). This feature is a technical feature common to or corresponding to the following embodiments.
  • Z in the structure represented by the general formula (1) is a group of either the structure represented by claim 2 or claim 3. Is preferable from the viewpoint of obtaining an optical film having an excellent balance between prevention of light leakage and light resistance.
  • the energy level of the highest occupied molecular orbital of the compound having the structure represented by the general formula (1) is ⁇ 5.85 eV or less from the viewpoint of obtaining an optical film having excellent durability.
  • the thermoplastic resin is a cyclic olefin resin or an acrylic resin from the viewpoint of preventing light leakage and obtaining an optical film having excellent light resistance and durability.
  • the cyclic olefin resin has a polar group, the energy level of the highest occupied orbital of the dye and the energy level of the resin are less likely to interact with each other, and deterioration of light resistance and durability can be suppressed.
  • the compound having the structure represented by the general formula (1) is contained in the range of 0.01 to 20% by mass with respect to the thermoplastic resin. If it is less than 0.01% by mass, the effect of the present invention is small, and if it exceeds 20% by mass, precipitation from the film (also referred to as bleed-out) is likely to occur under high temperature and high humidity.
  • the optical film has a functional layer
  • the functional layer contains a compound having a structure represented by the general formula (1).
  • the functional layer include a hard coat layer, an adhesive layer, a smooth layer, a light scattering layer, and the like, but a hard coat layer is preferable from the viewpoint of imparting scratch resistance to the optical film.
  • the optical film of the present invention is preferably a ⁇ / 4 retardation film, and by incorporating it in a polarizing plate, it is possible to provide a circular polarizing plate for antireflection.
  • the organic electroluminescence image display device of the present invention is characterized by comprising the optical film or the polarizing plate of the present invention.
  • the optical film of the present invention is an optical film containing a thermoplastic resin, and is characterized by containing a compound having a structure represented by the following general formula (1).
  • the energy level of the highest occupied molecular orbital (referred to as HOMO) can be lowered by using a compound having a structure represented by the general formula (1).
  • HOMO the energy level of the highest occupied molecular orbital
  • the oxidation potential can be lowered and photooxidation can be suppressed. That is, it has the effect of improving the light resistance of the dye compound.
  • Gaussian 09 (Revision C.01, MJ Frisch, et al, Gaussian, Inc., 2010.) manufactured by Gaussian, USA is used as the software for calculating the molecular orbital.
  • the optical film of the present invention is preferably transparent, and "transparent” means a spectrophotometer (for example, “Plastic-How to obtain total light transmittance and total light reflectance”" in accordance with JIS K 7375: 2008. It means that the light transmittance is 80% or more when measured using Hitachi High-Tech Science U-3300).
  • Compound having a structure represented by the general formula (1) A compound having a structure represented by the general formula (1) according to the present invention (hereinafter, also referred to as “dye compound”) has the following structure.
  • Z represents a heteroaryl group having two or more heteroatoms, and may have a substituent.
  • Z is any group represented by the following structural formula, and may further have a substituent.
  • R represents a substituent.
  • Z is any group represented by the following structural formula from the viewpoint of exhibiting the effect of the present invention.
  • R represents a substituent.
  • R represents a substituent, for example, a halogen atom (fluorine atom, chlorine atom, bromine atom, iodine atom, etc.), an alkyl group (methyl group, ethyl group, n-propyl group, isopropyl group, tert-butyl group, n).
  • a halogen atom fluorine atom, chlorine atom, bromine atom, iodine atom, etc.
  • an alkyl group methyl group, ethyl group, n-propyl group, isopropyl group, tert-butyl group, n).
  • cycloalkyl group cyclohexyl group, cyclopentyl group, 4-n-dodecylcyclohexyl group, etc.
  • alkenyl group vinyl group, allyl group, etc.
  • cycloalkenyl group (2-cyclopentene- 1-yl, 2-cyclohexene-1-yl group, etc.)
  • alkynyl group ethynyl group, propargyl group, etc.
  • aromatic hydrocarbon ring group phenyl group, p-tolyl group, naphthyl group, etc.
  • aromatic heterocycle Group (2-pyrrole group, 2-furyl group, 2-thienyl group, pyrrol group, imidazolyl group, oxazolyl group, thiazolyl group, benzoimidazolyl group, benzoxazolyl group, 2-benzothiazolyl group, pyra
  • the molecular weight of the dye compound is not particularly limited, but it is preferably not too large, for example, preferably 100 to 1000, in order to facilitate intermolecular penetration of the cyclic olefin resin or acrylic resin.
  • the molecular weight of the dye compound can be calculated from the formula amount of the chemical structural formula by specifying the chemical structure by, for example, an NMR (Nuclear Magnetic Resonance) apparatus or the like.
  • the maximum absorption wavelength of the dye compound is preferably in the range of 370 to 460 nm, and more preferably in the range of 400 to 440 nm.
  • the optical film easily absorbs light in the wavelength region appropriately. Therefore, for example, the optical film is used as a ⁇ / 4 retardation film in an organic EL image display device. If so, the leakage of reflected light in the wavelength region can be further suppressed.
  • the maximum absorption wavelength of the dye compound can be determined by measuring the absorption spectrum of the dye compound in dichloromethane using an ultraviolet visible spectrophotometer UV-2450 manufactured by Shimadzu Corporation.
  • the dye compound may be obtained synthetically or a commercially available product may be used.
  • the synthesis of the exemplary dye compound 12 can be synthesized by the following scheme.
  • the content of the dye compound is preferably in the range of 0.01 to 20% by mass with respect to the cyclic olefin resin.
  • the content of the dye compound is 0.01% by mass or more, light in a specific wavelength region is appropriately absorbed to improve light resistance while suppressing leakage of reflected light in, for example, an organic EL image display device.
  • the content of the dye compound is more preferably in the range of 0.015 to 10% by mass with respect to the cyclic olefin resin.
  • thermoplastic resin material according to the present invention is not limited as long as it can be treated as a film after film formation.
  • thermoplastic resin used for polarizing plates include cellulose ester resins such as triacetyl cellulose (TAC), cellulose acetate propionate (CAP), and diacetyl cellulose (DAC), and cycloolefin polymers (hereinafter referred to as cycloolefin polymers).
  • Cyclic olefin resins such as COP and cycloolefin resins
  • polypropylene resins such as polypropylene (PP)
  • acrylic resins such as polymethylmethacrylate (PMMA)
  • PET polyethylene terephthalate
  • Cellulose acetate can be applied.
  • cyclic olefin resins and acrylic resins are preferable from the viewpoint of optical properties including phase difference and physical properties such as durability.
  • Cycloolefin-based resin contained in the optical film of the present invention is a polymer of a cycloolefin monomer, or a cycloolefin monomer and another copolymerizable monomer. It is preferably a copolymer of.
  • the cycloolefin monomer is preferably a cycloolefin monomer having a norbornene skeleton, and is a cycloolefin monomer having a structure represented by the following general formula (A-1) or (A-2). More preferably.
  • R 1 to R 4 independently represent a hydrogen atom, a hydrocarbon group having 1 to 30 carbon atoms, or a polar group.
  • p represents an integer of 0 to 2. However, all of R 1 to R 4 do not represent hydrogen atoms at the same time, R 1 and R 2 do not represent hydrogen atoms at the same time, and R 3 and R 4 do not represent hydrogen atoms at the same time. do.
  • the hydrocarbon group having 1 to 30 carbon atoms represented by R 1 to R 4 in the general formula (A-1) is preferably, for example, a hydrocarbon group having 1 to 10 carbon atoms, and is preferably a carbon atom. More preferably, it is a hydrocarbon group having a number of 1 to 5.
  • the hydrocarbon group having 1 to 30 carbon atoms may further have a linking group containing, for example, a halogen atom, an oxygen atom, a nitrogen atom, a sulfur atom or a silicon atom. Examples of such linking groups include divalent polar groups such as carbonyl groups, imino groups, ether bonds, silyl ether bonds, thioether bonds and the like.
  • Examples of the hydrocarbon group having 1 to 30 carbon atoms include a methyl group, an ethyl group, a propyl group, a butyl group and the like.
  • Examples of the polar groups represented by R 1 to R 4 in the general formula (A-1) include a carboxy group, a hydroxy group, an alkoxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an amino group, an amide group and a cyano group. Is included. Of these, a carboxy group, a hydroxy group, an alkoxycarbonyl group and an aryloxycarbonyl group are preferable, and an alkoxycarbonyl group and an aryloxycarbonyl group are preferable from the viewpoint of ensuring solubility during solution film formation.
  • P in the general formula (A-1) is preferably 1 or 2 from the viewpoint of increasing the heat resistance of the optical film. This is because when p is 1 or 2, the obtained polymer becomes bulky and the glass transition temperature tends to be improved.
  • R 5 represents an alkylsilyl group having a hydrogen atom, a hydrocarbon group having 1 to 5 carbon atoms, or an alkyl group having 1 to 5 carbon atoms.
  • R 6 represents a carboxy group, a hydroxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an amino group, an amide group, a cyano group, or a halogen atom (fluorine atom, chlorine atom, bromine atom or iodine atom).
  • p represents an integer of 0 to 2.
  • R 5 in the general formula (A-2) preferably represents a hydrocarbon group having 1 to 5 carbon atoms, and more preferably represents a hydrocarbon group having 1 to 3 carbon atoms.
  • R 6 in the general formula (A-2) preferably represents a carboxy group, a hydroxy group, an alkoxycarbonyl group and an aryloxycarbonyl group, and from the viewpoint of ensuring solubility during solution film formation, the alkoxycarbonyl group and aryl Oxycarbonyl groups are more preferred.
  • P in the general formula (A-2) preferably represents 1 or 2 from the viewpoint of enhancing the heat resistance of the optical film. This is because when p represents 1 or 2, the obtained polymer becomes bulky and the glass transition temperature tends to improve.
  • a cycloolefin monomer having a structure represented by the general formula (A-2) is preferable from the viewpoint of improving the solubility in an organic solvent.
  • an organic compound loses its symmetry and thus its crystallinity is lowered, so that its solubility in an organic solvent is improved.
  • R 5 and R 6 in the general formula (A-2) are substituted with only the ring-constituting carbon atom on one side with respect to the axis of symmetry of the molecule, the symmetry of the molecule is low, that is, the general formula (A-). Since the cycloolefin monomer having the structure represented by 2) has high solubility, it is suitable for producing an optical film by a solution casting method.
  • the content ratio of the cycloolefin monomer having the structure represented by the general formula (A-2) in the polymer of the cycloolefin monomer is the total of all the cycloolefin monomers constituting the cycloolefin resin. For example, it can be 70 mol% or more, preferably 80 mol% or more, and more preferably 100 mol%.
  • a cycloolefin monomer having a structure represented by the general formula (A-2) is contained in a certain amount or more, the orientation of the resin is increased, so that the retardation value is likely to increase.
  • copolymerizable monomers copolymerizable with cycloolefin monomers examples include copolymerizable monomers capable of ring-opening copolymerization with cycloolefin monomers and addition copolymerization with cycloolefin monomers. Possible copolymerizable monomers and the like are included.
  • ring-opening copolymerizable copolymerizable monomers examples include cycloolefins such as cyclobutene, cyclopentene, cycloheptene, cyclooctene and dicyclopentadiene.
  • Examples of copolymerizable monomers that can be added and copolymerized include unsaturated double bond-containing compounds, vinyl-based cyclic hydrocarbon monomers, and (meth) acrylates.
  • Examples of unsaturated double bond-containing compounds include olefin compounds having 2 to 12 (preferably 2 to 8) carbon atoms, and examples thereof include ethylene, propylene and butene.
  • Examples of vinyl-based cyclic hydrocarbon monomers include vinyl cyclopentene-based monomers such as 4-vinylcyclopentene and 2-methyl-4-isopropenylcyclopentene.
  • Examples of (meth) acrylates include alkyl (meth) acrylates having 1 to 20 carbon atoms such as methyl (meth) acrylate, 2-ethylhexyl (meth) acrylate and cyclohexyl (meth) acrylate.
  • the content ratio of the cycloolefin monomer in the copolymer of the cycloolefin monomer and the copolymerizable monomer is, for example, 20 to 80 mol% with respect to the total of all the monomers constituting the copolymer. It can be preferably 30 to 70 mol%.
  • the cycloolefin-based resin is obtained by polymerizing a cycloolefin monomer having a norbornene skeleton, preferably a cycloolefin monomer having a structure represented by the general formula (A-1) or (A-2). It is a polymer obtained by copolymerization, and examples thereof include the following.
  • the catalyst used for the addition polymerization of the above (5) to (7) for example, those described in paragraphs 0058 to 0063 of JP-A-2005-227606 can be used.
  • the alternating copolymerization reaction of (7) above can be carried out, for example, by the method described in paragraphs 0071 and 0072 of JP-A-2005-227606.
  • the polymers of the above (1) to (3) and (5) are preferable, and the polymers of the above (3) and (5) are more preferable.
  • the cycloolefin-based resin has a structural unit represented by the following general formula (B-1) in that the glass transition temperature of the obtained cycloolefin-based resin can be increased and the light transmittance can be increased. It is preferable that at least one of the structural units represented by the following general formula (B-2) is contained, and only the structural unit represented by the general formula (B-2) is included, or the general formula (B-1) is used. It is more preferable to include both the structural unit represented and the structural unit represented by the general formula (B-2).
  • the structural unit represented by the general formula (B-1) is a structural unit derived from the cycloolefin monomer represented by the above-mentioned general formula (A-1), and is represented by the general formula (B-2).
  • the structural unit is a structural unit derived from the cycloolefin monomer represented by the above-mentioned general formula (A-2).
  • R 1 ⁇ R 4 and p are respectively the same as R 1 ⁇ R 4 and p of the general formula (A-1).
  • R 5 ⁇ R 6 and p are respectively the same as R 5 ⁇ R 6 and p in the general formula (A-2).
  • the cycloolefin resin according to the present invention may be a commercially available product.
  • Examples of commercially available cycloolefin resins include Arton G (eg, G7810, etc.), Arton F, Arton R (eg, R4500, R4900, R5000, etc.) and Arton RX manufactured by JSR Corporation. included.
  • the intrinsic viscosity [ ⁇ ] inh of the cycloolefin resin is preferably in the range of 0.2 to 5 cm 3 / g, and more preferably in the range of 0.3 to 3 cm 3 / g when measured at 30 ° C. It is preferably in the range of 0.4 to 1.5 cm 3 / g, more preferably in the range of 0.4 to 1.5 cm 3 / g.
  • the number average molecular weight (Mn) of the cycloolefin resin is preferably in the range of 8000 to 100,000, more preferably in the range of 10,000 to 80,000, and further preferably in the range of 12,000 to 50,000.
  • the weight average molecular weight (Mw) of the cycloolefin resin is preferably in the range of 20000 to 300,000, more preferably in the range of 30,000 to 250,000, and even more preferably in the range of 40,000 to 200,000.
  • the number average molecular weight and the weight average molecular weight of the cycloolefin resin can be measured by gel permeation chromatography (GPC) in terms of polystyrene.
  • the number average molecular weight and the weight average molecular weight are within the above ranges, the heat resistance, water resistance, chemical resistance, mechanical properties, and molding processability as a film of the cycloolefin resin are good. Become.
  • the glass transition temperature (Tg) of the cycloolefin resin is usually 110 ° C. or higher, preferably in the range of 110 to 350 ° C., more preferably in the range of 120 to 250 ° C., and 120 to 220 ° C. It is more preferable that the range is.
  • Tg is 110 ° C. or higher, deformation under high temperature conditions can be easily suppressed.
  • the Tg is 350 ° C. or lower, the molding process becomes easy, and the deterioration of the resin due to the heat during the molding process is also easily suppressed.
  • the content of the cycloolefin resin is preferably 70% by mass or more, more preferably 80% by mass or more with respect to the film.
  • the acrylic resin according to the present invention is a polymer of an acrylic acid ester or a methacrylic acid ester, and also includes a copolymer with another monomer.
  • the acrylic resin according to the present invention also includes a methacrylic resin.
  • the resin is not particularly limited, but the methyl methacrylate unit is in the range of 50 to 99% by mass, and other monomer units copolymerizable therewith are in the range of 1 to 50% by mass. Is preferable.
  • Hydroxyalkyl acrylates such as hydroxyethyl acrylates, ⁇ , ⁇ -unsaturated acids such as acrylic acid and methacrylic acid, acrylamides such as acryloylmorpholin and N-hydroxyphenylmethacrylate, N-vinylpyrrolidone, maleic anhydride, fumaric acid and itaconic acid.
  • Unsaturated group-containing divalent carboxylic acids such as, styrene, aromatic vinyl compounds such as ⁇ -methylstyrene, ⁇ , ⁇ -unsaturated nitriles such as acryloyl nitrile and methacrylic nitrile, maleic anhydride, maleimide, N-substituted maleimide, etc.
  • Glutalimide, glutaric anhydride and the like can be mentioned.
  • Examples of the copolymerizable monomer forming a unit excluding glutarimide and glutaric anhydride from the above unit include a monomer corresponding to the above unit. That is, alkyl methacrylate having an alkyl number of 2 to 18 carbons, alkyl acrylate having an alkyl number of 1 to 18 carbon atoms, hydroxyalkyl acrylate such as isobornyl methacrylate and 2-hydroxyethyl acrylate, acrylic acid, methacrylic acid and the like.
  • Unsaturated group-containing divalent carboxylic acids such as ⁇ , ⁇ -unsaturated acid, acrylic morpholine, acrylamide such as N-hydroxyphenylmethacrylic acid, N-vinylpyrrolidone, maleic acid, fumaric acid, and itaconic acid, styrene, ⁇ -methylstyrene.
  • aromatic vinyl compounds such as, acrylonitrile, ⁇ , ⁇ -unsaturated nitriles such as methacrylic acid, maleic anhydride, maleimide, N-substituted maleimide, and the like.
  • the glutarimide unit can be formed, for example, by reacting an intermediate polymer having a (meth) acrylic acid ester unit with a primary amine (imidizing agent) to imidize it (see JP-A-2011-26563). .).
  • the glutaric anhydride unit can be formed, for example, by heating an intermediate polymer having a (meth) acrylic acid ester unit (see Japanese Patent No. 4961164).
  • the acrylic resin according to the present invention contains isobornyl methacrylate, acryloylmorpholine, N-hydroxyphenylmethacrylamide, N-vinylpyrrolidone, styrene, hydroxyethyl methacrylate, and anhydride from the viewpoint of mechanical strength. It is particularly preferred that maleic acid, maleimide, N-substituted maleimide, glutaric anhydride or glutarimide are included.
  • the acrylic resin according to the present invention has the viewpoint of controlling dimensional changes with respect to changes in the temperature and humidity atmosphere of the environment, peelability from a metal support during film production, drying properties of an organic solvent, heat resistance, and mechanical strength.
  • the weight average molecular weight (Mw) is preferably in the range of 50,000 to 1,000,000, more preferably in the range of 100,000 to 1,000,000, and in the range of 200,000 to 800,000. It is particularly preferable to have.
  • the heat resistance and mechanical strength are excellent, and if it is 1 million or less, the peelability from the metal support and the drying property of the organic solvent are excellent.
  • the method for producing the acrylic resin according to the present invention is not particularly limited, and any known method such as suspension polymerization, emulsion polymerization, bulk polymerization, or solution polymerization may be used.
  • the polymerization initiator ordinary peroxide-based and azo-based ones can be used, and redox-based ones can also be used.
  • the polymerization temperature may be in the range of 30 to 100 ° C. for suspension or emulsion polymerization and in the range of 80 to 160 ° C. for massive or solution polymerization.
  • polymerization can also be carried out using an alkyl mercaptan or the like as a chain transfer agent.
  • the glass transition temperature Tg of the acrylic resin is preferably in the range of 80 to 120 ° C. from the viewpoint of maintaining the mechanical strength of the film.
  • acrylic resin according to the present invention a commercially available one can also be used.
  • Delpet 60N, 80N, 980N, SR8200 (all manufactured by Asahi Kasei Chemicals Co., Ltd.), Dianar BR52, BR80, BR83, BR85, BR88, EMB-143, EMB-159, EMB-160, EMB-161, Examples thereof include EMB-218, EMB-229, EMB-270, EMB-273 (all manufactured by Mitsubishi Rayon Co., Ltd.), KT75, TX400S, IPX012 (all manufactured by Denki Kagaku Kogyo Co., Ltd.) and the like. Two or more kinds of acrylic resins can be used in combination.
  • the acrylic resin according to the present invention preferably contains an additive, and as an example of the additive, the acrylic particles (rubber elastic particles) described in International Publication No. 2010/001668 are used as the mechanical strength of the film. It is preferably contained for improvement and adjustment of the dimensional change rate.
  • the acrylic particles rubber elastic particles described in International Publication No. 2010/001668 are used as the mechanical strength of the film. It is preferably contained for improvement and adjustment of the dimensional change rate.
  • Examples of commercially available products of such a multilayer structure acrylic granular composite include "Metabrene W-341" manufactured by Mitsubishi Rayon, "Kaneka” manufactured by Kaneka, “Paraloid” manufactured by Kureha, and Roamand.
  • Examples include “Acryloid” manufactured by Haas, “Stafyroid” manufactured by Aika, Chemisnow MR-2G, MS-300X (above, manufactured by Soken Kagaku Co., Ltd.) and “Parapet SA” manufactured by Kuraray. Can be used alone or in combination of two or more.
  • the volume average particle diameter of the acrylic particles is 0.35 ⁇ m or less, preferably in the range of 0.01 to 0.35 ⁇ m, and more preferably in the range of 0.05 to 0.30 ⁇ m.
  • the particle size is above a certain level, the film can be easily stretched under heating, and when the particle size is below a certain level, the transparency of the obtained film is not easily impaired.
  • the optical film of the present invention preferably has a flexural modulus (JIS K7171) of 1.5 GPa or less.
  • This flexural modulus is more preferably 1.3 GPa or less, still more preferably 1.2 GPa or less.
  • This flexural modulus varies depending on the type and amount of acrylic resin and rubber elastic particles in the film. For example, the larger the content of rubber elastic particles, the smaller the flexural modulus.
  • the acrylic resin the flexural modulus is generally smaller when a copolymer of alkyl methacrylate and alkyl acrylate or the like is used than when a homopolymer of alkyl methacrylate is used.
  • the optical film of the present invention may further contain components other than the above as long as the effects of the present invention are not impaired.
  • other components include matting agents, UV absorbers, phase difference adjusters (phase difference increasing agents, phase difference reducing agents), plasticizers, antioxidants, light stabilizers, antistatic agents, release agents, and boosters. Contains thickeners.
  • the optical film contains a matting agent from the viewpoint of imparting unevenness to the surface of the optical film and imparting appropriate slipperiness.
  • the matting agent is fine particles.
  • the fine particles may be inorganic fine particles or resin fine particles.
  • inorganic fine particles include silicon dioxide, titanium dioxide, aluminum oxide, zirconium oxide, calcium carbonate, calcium carbonate, talc, clay, calcined kaolin, calcined calcium silicate, hydrated calcium silicate, aluminum silicate, magnesium silicate.
  • fine particles of inorganic compounds such as calcium phosphate.
  • the inorganic fine particles are preferably silicon dioxide fine particles from the viewpoint that it is difficult to increase the haze of the optical film and the friction coefficient can be effectively lowered.
  • silicon dioxide fine particles examples include Aerosil 200V, Aerosil R972V, and Aerosil R812 (all manufactured by Nippon Aerosil Co., Ltd.).
  • resin fine particles examples include fine particles such as silicone resin, fluororesin, and acrylic resin. Of these, silicone resin fine particles are preferable, and resin fine particles having a three-dimensional network structure are particularly preferable. Examples of the resin fine particles include Tospearl 103, 105, 108, 120, 145, 3120 and 240 (all manufactured by Toshiba Silicone Co., Ltd.).
  • the average particle size of the primary particles of the fine particles is preferably in the range of 0.005 to 0.4 ⁇ m, more preferably in the range of 0.01 to 0.3 ⁇ m.
  • These fine particles may be contained as secondary aggregates having a particle size in the range of 0.05 to 0.3 ⁇ m.
  • the content of the fine particles is preferably in the range of 0.01 to 3.0% by mass, more preferably in the range of 0.01 to 2.0% by mass with respect to the optical film.
  • the coefficient of dynamic friction on the surface of the optical film is preferably in the range of 0.2 to 1.0.
  • the in-plane retardation Ro measured in an environment with a measurement wavelength of 550 nm and 23 ° C. and 55% RH is in the range of 100 to 170 nm. Is preferable, and the range is more preferably in the range of 130 to 150 nm.
  • Ro is defined by the following formula.
  • the in-plane slow-phase axis of the optical film can be confirmed by an automatic birefringence meter Axoscan (Axo Scan Mueller Matrix Polarimeter: manufactured by Axometrics).
  • the angle of the in-plane slow axis of the optical film with respect to the width direction of the optical film is preferably in the range of 40 to 50 °, more preferably in the range of 43 to 47 °. Is.
  • Ro can be measured by the following method.
  • the optical film is humidity-controlled for 24 hours in an environment of 23 ° C. and 55% RH.
  • the average refractive index of this film is measured with an Abbe refractometer, and the thickness d is measured with a commercially available micrometer.
  • the phase difference Ro of the optical film can be adjusted, for example, by the monomer composition of the cycloolefin resin and the stretching conditions.
  • the optical film Since the optical film is preferably formed by a solution casting method, it may further contain a residual solvent.
  • the amount of residual solvent is preferably 700 ppm or less, more preferably 30 to 700 ppm with respect to the optical film.
  • the content of the residual solvent can be adjusted by the drying conditions of the dope cast on the support in the process of manufacturing the optical film.
  • the amount of residual solvent in the optical film can be measured by headspace gas chromatography.
  • a sample is sealed in a container, heated, and the gas in the container is promptly injected into a gas chromatograph with the container filled with volatile components, and mass spectrometry is performed to identify the compound.
  • the volatile components are quantified while doing so.
  • the headspace method it is possible to observe all peaks of volatile components by gas chromatography, and by using an analysis method that utilizes electromagnetic interaction, volatile substances and monomers can be detected with high accuracy. Quantification can also be performed.
  • the thickness of the optical film of the present invention is not particularly limited, but is preferably in the range of 10 to 80 ⁇ m, and more preferably in the range of 10 to 60 ⁇ m.
  • the optical film of the present invention comprises 1) a step of preparing a dope containing the cycloolefin resin or acrylic resin, the dye compound, and a solvent, and 2) the obtained dope. It can be produced through a step of casting on a support and then drying and peeling to obtain a cast film, and 3) a step of stretching the obtained cast film. Further, the optical film of the present invention further comprises 4) a step of drying the stretched cast film, 5) a step of cutting both ends of the obtained optical film and embossing the film, and 6) a winding step. It may be manufactured through.
  • step 1) (dope preparation step) Cycloolefin resin or acrylic resin and dye compound are dissolved or dispersed in a solvent to prepare a dope.
  • the solvent used for doping contains at least an organic solvent (good solvent) capable of dissolving a cycloolefin resin.
  • good solvents include chlorine-based organic solvents such as methylene chloride; non-chlorine-based organic solvents such as methyl acetate, ethyl acetate, acetone and tetrahydrofuran. Of these, methylene chloride is preferable.
  • the solvent used for doping may further contain a poor solvent.
  • poor solvents include straight-chain or branched-chain aliphatic alcohols having 1 to 4 carbon atoms. When the ratio of alcohol in the dope is high, the film-like substance tends to gel and peels off from the metal support easily.
  • linear or branched aliphatic alcohol having 1 to 4 carbon atoms include methanol, ethanol, n-propanol, iso-propanol, n-butanol, sec-butanol, and tert-butanol. Of these, ethanol is preferable because of its dope stability, relatively low boiling point, and good drying property.
  • the dope obtained in the step 2) (casting step) is cast on the support.
  • Dope casting can be performed by discharging from a casting die.
  • the solvent is evaporated until the dope cast on the support can be peeled off from the support by a peeling roll.
  • Examples of the method of evaporating the solvent include a method of blowing wind on the cast dope, a method of transferring heat from the back surface of the support with a liquid, and a method of transferring heat from the front and back surfaces with radiant heat.
  • the cast film obtained by evaporating the solvent is peeled off with a peeling roll.
  • the amount of residual solvent in the cast film on the support at the time of peeling may be in the range of 50 to 120% by mass, for example, depending on the drying conditions and the length of the support. If peeling is performed with a large amount of residual solvent, the cast film is too soft and the flatness during peeling tends to be impaired, and wrinkles and vertical streaks due to peeling tension are likely to occur.
  • the amount of residual solvent is determined.
  • the amount of residual solvent is defined by the following formula.
  • Residual solvent amount (mass%) (mass before heat treatment of casting film-mass after heat treatment of casting film) / (mass after heat treatment of casting film) ⁇ 100
  • the heat treatment for measuring the amount of residual solvent is a heat treatment at 115 ° C. for 1 hour.
  • step 3 stretching step
  • the casting film obtained by peeling from the support is stretched.
  • Stretching may be performed according to the required optical characteristics, and it is preferable to stretch in one or more of the width direction (TD direction), the transport direction (MD direction), and the oblique direction.
  • TD direction width direction
  • MD direction transport direction
  • oblique direction oblique direction
  • the draw ratio depends on the required optical characteristics, but when used as a ⁇ / 4 retardation film, it is preferably in the range of 1.05 to 4.0 times, preferably 1.5 to 3.0 times. More preferably, it is in the range.
  • the stretch ratio is defined as the stretch direction size of the film after stretching / the stretch direction size of the film before stretching.
  • the stretching temperature (drying temperature during stretching) is preferably in the range of (Tg + 2) to (Tg + 50) ° C., preferably in the range of (Tg + 2) to (Tg + 50) ° C., where Tg is the glass transition temperature of the cycloolefin resin, as described above. It is more preferably in the range of (Tg + 30) ° C.
  • Tg glass transition temperature of the cycloolefin resin, as described above. It is more preferably in the range of (Tg + 30) ° C.
  • the stretching temperature it is preferable to measure the atmospheric temperature such as (a) the temperature inside the stretching machine in the same manner as described above.
  • the amount of residual solvent in the film-like material at the start of stretching is preferably about the same as the amount of residual solvent in the film-like material at the time of peeling, and is preferably in the range of, for example, 20 to 30% by mass, 25. More preferably, it is in the range of about 30% by mass.
  • Stretching of the film-like object in the TD direction can be performed, for example, by fixing both ends of the film-like object with clips or pins and widening the distance between the clips or pins in the traveling direction (tenter method).
  • Stretching of the film-like material in the MD direction can be performed, for example, by a method (roll method) in which a plurality of rolls are provided with a peripheral speed difference and the roll peripheral speed difference is utilized between the rolls.
  • a tenter method in which both ends of the casting film are gripped by a clip or the like and stretched is preferable in order to improve the flatness and dimensional stability of the film.
  • step 4 drying step
  • the stretched casting film is further dried to obtain an optical film.
  • Drying of the cast film can be performed, for example, while transporting the cast film by a plurality of transport rolls (for example, a plurality of transport rolls arranged in a staggered pattern when viewed from the side surface).
  • the drying means is not particularly limited, and hot air, infrared rays, heating rolls or microwaves are used. Hot air drying is preferable from the viewpoint of simplicity.
  • step 5 cutting / embossing step
  • Both ends of the obtained optical film in the width direction are cut. Both ends of the optical film can be cut by a slitter.
  • embossing is performed on both ends of the optical film in the width direction.
  • the embossing process can be performed by pressing a heated embossing roller against both ends of the optical film. Fine irregularities are formed on the surface of the embossing roller, and by pressing the embossing roller against both ends of the optical film, irregularities are formed on both ends.
  • the obtained optical film is wound up to obtain a roll body.
  • the method of winding the optical film may be any method using a winder that is generally used, and is a method of controlling tension such as a constant torque method, a constant tension method, a taper tension method, and a program tension control method with a constant internal stress. There is.
  • the winding length of the optical film in the roll body is preferably in the range of 1000 to 7200 m.
  • the width of the optical film is preferably in the range of 1000 to 3000 mm.
  • the optical film of the present invention preferably has a functional layer, and the functional layer may contain a compound having a structure represented by the general formula (1).
  • the functional layer include a hard coat layer, an antistatic layer, an antireflection layer, a slippery layer, an adhesive layer, an antiglare layer, a barrier layer, etc., but when incorporated into an organic EL image display device, scratch resistance It is preferable to provide a hard coat layer in order to improve the above.
  • the hard coat layer used in the present invention is preferably contained with an active ray-curable resin because it is excellent in mechanical film strength (scratch resistance, pencil hardness). That is, it is a layer containing a resin as a main component, which is cured through a cross-linking reaction by irradiation with active rays (also referred to as active energy rays) such as ultraviolet rays and electron beams.
  • active ray-curable resin a component containing a monomer having an ethylenically unsaturated double bond is preferably used, and the active ray-curable resin layer is formed by curing by irradiating with an active ray such as ultraviolet rays or an electron beam.
  • the active ray-curable resin include an ultraviolet curable resin and an electron beam curable resin, and the resin cured by ultraviolet irradiation is particularly excellent in mechanical film strength (scratch resistance, pencil hardness). It is preferable from the point of view.
  • the ultraviolet curable resin include an ultraviolet curable acrylate resin, an ultraviolet curable urethane acrylate resin, an ultraviolet curable polyester acrylate resin, an ultraviolet curable epoxy acrylate resin, an ultraviolet curable polyol acrylate resin, and an ultraviolet ray.
  • a curable epoxy resin or the like is preferably used, and among them, an ultraviolet curable acrylate resin is preferable.
  • Adekaoptomer N series Sunrad H-601, RC-750, RC-700, RC-600, RC-500, RC-611, RC-612 (all manufactured by Sanyo Kasei Kogyo Co., Ltd.).
  • the above-mentioned active ray-curable resin may be used alone or in combination of two or more.
  • the hard coat layer contains a photopolymerization initiator in order to accelerate the curing of the active ray-curable resin.
  • Specific examples of the photopolymerization initiator include alkylphenone-based, acetophenone, benzophenone, hydroxybenzophenone, Michler ketone, ⁇ -amyloxime ester, thioxanthone and the like, and derivatives thereof. It is not particularly limited to these.
  • photopolymerization initiator examples thereof include Irgacure 184, Irgacure 907, and Irgacure 651 manufactured by BASF Japan Ltd. as preferable examples.
  • the thickness of the hard coat layer is preferably in the range of 0.1 to 50 ⁇ m, preferably in the range of 1 to 20 ⁇ m, from the viewpoint of improving the hard coat property and improving the transparency of the optical film. More preferred.
  • the method for forming the hard coat layer is not particularly limited. For example, after preparing a coating liquid for forming a hard coat layer containing each of the above components, the coating liquid is applied with a wire bar or the like, and the coating liquid is cured by heat or ultraviolet rays. , A method of forming a hard coat layer and the like. It is preferable that the hard coat layer contains a compound having a structure represented by the general formula (1) according to the present invention from the viewpoint of further improving light resistance and imparting scratch resistance. It is preferably contained in the range of 0.1 to 40% by mass, more preferably in the range of 0.1 to 20% by mass, based on the ultraviolet curable resin.
  • the polarizing plate of the present invention has a polarizing element and an optical film of the present invention arranged on at least one surface thereof.
  • FIG. 1 is a cross-sectional view showing the configuration of the polarizing plate 100.
  • the polarizing plate 100 of the present invention comprises a polarizing element 101, an optical film 102 of the present invention arranged on one surface thereof, an opposing film 103 arranged on the other surface, and polarized light. It may have two adhesive layers 104 arranged between the child 101 and the optical film 102 and between the polarizer 101 and the opposing film 103.
  • the polarizer 101 is an element that allows only light on a plane of polarization in a certain direction to pass through, and is a polyvinyl alcohol-based stretched film doped with iodine or a dichroic dye.
  • the thickness of the polarizer 101 is in the range of 5 to 40 ⁇ m, preferably in the range of 5 to 30 ⁇ m, and particularly preferably in the range of 5 to 20 ⁇ m.
  • the optical film 102 can function as a retardation film, for example, a ⁇ / 4 retardation film used for a circularly polarizing plate of an organic EL image display device.
  • the angle formed by the in-plane slow-phase axis of the optical film 102 with respect to one side of the outer shape of the rectangular film is preferably in the range of 30 to 60 °, more preferably 45 °. ..
  • the one side corresponds to the width direction of the long optical film 102.
  • the angle formed by the in-plane slow-phase axis of the optical film 102 and the absorption axis (or transmission axis) of the polarizer 101 is preferably in the range of 30 to 60 °, more preferably 45 °.
  • the optical film 102 may further have other layers (for example, a hard coat layer, a low refractive index layer, and an antireflection layer) arranged on the surface opposite to the polarizer 101, depending on the application.
  • the optical film 102 may further have an easy-adhesion layer (not shown) arranged on the surface on the side of the polarizer 101.
  • the opposing film 103 may be the optical film of the present invention or another optical film (that is, a protective film). More preferably, the optical film of the present invention is used and the hard coat layer is provided on the outermost surface.
  • Examples of commercially available protective films include commercially available cellulose ester films (eg, Konica Minolta Tuck KC8UX, KC5UX, KC4UX, KC8UCR3, KC4SR, KC4BR, KC4CR, KC4DR, KC4FR, KC4KR, KC8UY, KC6UY, KCUEK, KC6UY, KC4UY KC8UY-HA, KC2UA, KC4UA, KC6UA, KC8UA, KC2UAH, KC4UAH, KC6UAH, manufactured by Konica Minolta Co., Ltd. The above includes Fuji Film Co., Ltd.).
  • cellulose ester films eg, Konica Minolta Tuck KC8UX, KC5UX, KC4UX, KC8UCR3, KC4SR, KC4BR, KC4CR, KC4DR, KC4FR, KC
  • cycloolefin-based film As a commercially available cycloolefin-based film, various grades of cycloolefin polymer (COP) molded product-Zeonor film (R) manufactured by Zeon Corporation are preferably used.
  • COP cycloolefin polymer
  • R molded product-Zeonor film
  • the thickness of the opposing film 103 can be, for example, in the range of 5 to 100 ⁇ m, preferably in the range of 40 to 80 ⁇ m.
  • the adhesive layer 104 may be arranged between the polarizer 101 and the optical film 102, and between the polarizer 101 and the opposing film 103, respectively.
  • the adhesive layer 104 may be a layer obtained from a water-based adhesive described later, or may be a cured product layer of an ultraviolet curable adhesive.
  • the thickness of the adhesive layer 104 is not particularly limited, but may be, for example, in the range of 0.01 to 10 ⁇ m, preferably about 0.01 to 5 ⁇ m.
  • the polarizing plate 100 may have a long shape or a sheet shape obtained by cutting a long polarizing plate along the width direction.
  • the polarizing plate When an aluminum reflective material is laminated on the optical film of the polarizing plate via an adhesive layer, the reflectance of light having a wavelength of 460 nm of the polarizing plate is T 1 (%), and the reflectance of light having a wavelength of 650 nm is T 2 When (%), the polarizing plate preferably satisfies the following formula (2).
  • Equation (2) 0 ⁇ T 1 / T 2 ⁇ 2.6
  • T 1 / T 2 is less than 2.6
  • the reflectance of light having a wavelength of 460 nm is not too high, that is, leakage of reflected light in the vicinity of the wavelength can be suppressed. Therefore, for example, reflection in an organic EL image display device.
  • the color of light can be improved.
  • T 1 / T 2 is more than 0, for example, the light emission in the wavelength region in the organic EL image display device is not easily obstructed by the dye compound, so that the decrease in brightness can be suppressed. More preferably, T 1 / T 2 is 2.5 or less.
  • the color difference ⁇ E (a * b * ) of the polarizing plate is preferably less than 25, more preferably less than 20.
  • the tint of the reflected light in the organic EL image display device can be improved.
  • the T 1 / T 2 of the polarizing plate and the color difference ⁇ E (a * b * ) can be measured by the following procedure.
  • the pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive.
  • the T 1 / T 2 of the polarizing plate and the color difference ⁇ E (a * b * ) can be adjusted by the type and content of the dye compound represented by the general formula (1).
  • the polarizing plate 100 can be obtained through a step of bonding the polarizing element 101 and the optical film 102 of the present invention via an adhesive.
  • an adhesive a water-based adhesive or an ultraviolet curable adhesive is used.
  • water-based adhesive examples include a water-based adhesive containing a polyvinyl alcohol-based resin (such as a completely saponified polyvinyl alcohol aqueous solution).
  • the ultraviolet curable adhesive composition may be a photoradical polymerization type composition, a photocationic polymerization type composition, or a hybrid type composition in which they are used in combination.
  • Examples of the photoradical polymerization type composition include a radically polymerizable compound containing a polar group such as a hydroxy group or a carboxy group described in JP-A-2008-09329, and a radically polymerizable compound containing no polar group. Compositions containing) are included.
  • the radically polymerizable compound is preferably a compound having an ethylenically unsaturated bond capable of radical polymerization.
  • Preferred examples of compounds having a radically polymerizable ethylenically unsaturated bond include compounds having a (meth) acryloyl group.
  • Examples of compounds having a (meth) acryloyl group include N-substituted (meth) acrylamide-based compounds and (meth) acrylate-based compounds.
  • (Meta) acrylamide means acryamide or methacrylamide.
  • Examples of the photocationic polymerization type composition include ( ⁇ ) a cationically polymerizable compound, ( ⁇ ) a photocationic polymerization initiator, and ( ⁇ ) a wavelength longer than 380 nm as disclosed in JP-A-2011-028234. Includes a photosensitizer that exhibits maximum absorption of light, and an ultraviolet curable adhesive composition containing a ( ⁇ ) naphthalene-based photosensitizer.
  • a step of performing a pretreatment for easy adhesion on the adhesive surface of the optical film and the opposing film pretreatment step
  • a polarizer and the optical film (or the opposing film) are attached. It can be obtained through a step of bonding via an ultraviolet adhesive and a step of 3) irradiating the laminated product obtained by bonding with ultraviolet rays to cure the ultraviolet adhesive (curing step).
  • Pretreatment step Easy adhesion treatment is performed on the bonding surface between the optical film and the polarizer of the opposing film.
  • Examples of the easy-adhesion treatment include corona treatment and plasma treatment.
  • An ultraviolet curable adhesive is applied to at least one of a polarizing element and an optical film (or an opposing film).
  • the method of applying the ultraviolet curable adhesive is not particularly limited, and may be, for example, a doctor blade, a wire bar, a die coater, a comma coater, a gravure coater, or the like.
  • the polarizer and the optical film or the opposing film are bonded together via an ultraviolet curable adhesive.
  • both sides of the laminated laminate are sandwiched between pressure rollers and the like to pressurize.
  • the material of the pressure roller metal or rubber can be used.
  • the laminate bonded via the ultraviolet curable adhesive is irradiated with ultraviolet rays to cure the ultraviolet curable adhesive.
  • the polarizer and the optical film or the opposing film are adhered to each other via an ultraviolet curable adhesive.
  • the curing of the ultraviolet curable adhesive on one side of the polarizer and the curing of the ultraviolet curable adhesive on the other side of the polarizer may be performed sequentially or at the same time. From the viewpoint of increasing the production efficiency of the polarizing plate, it is preferable that the curing of the ultraviolet curable adhesive on one side of the polarizer and the curing of the ultraviolet curable adhesive on the other side of the polarizer are performed at the same time.
  • It irradiation condition of the ultraviolet ray may be any conditions that ultraviolet curable adhesive is cured, for example, be integrated light quantity in the range of 50 ⁇ 1500mJ / cm 2 is preferably in the range of 100 ⁇ 500mJ / cm 2 Is more preferable.
  • the line speed at the time of manufacturing the polarizing plate depends on the curing time of the adhesive, but is preferably in the range of, for example, 1 to 500 m / min, and more preferably in the range of 5 to 300 m / min.
  • the line speed is 1 m / min or more, the productivity can be easily increased and the damage to the optical film and the opposing film can be further reduced.
  • the line speed is 500 m / min or less, the ultraviolet curable adhesive is sufficiently cured, and good adhesiveness can be easily obtained.
  • a high temperature environment may occur due to irradiation with ultraviolet rays or heating to promote curing. Further, even when the adhesive is a water-based adhesive, a high temperature environment may occur due to heating for promoting adhesion or drying the adhesive.
  • the optical film of the present invention is excellent in light resistance and durability, it is possible to obtain a polarizing plate in which light leakage is suppressed even in an environment where the temperature is high when the polarizer and the optical film are bonded. Can be done. By suppressing the light leakage of the polarizing plate, it is possible to suppress a slight light leakage due to the reflection of external light at the time of black display in the organic EL image display device having the polarizing plate.
  • optical film of the present invention can be used as an optical film (phase difference film, protective film) of an image display device such as an organic EL image display device or a liquid crystal display device.
  • the optical film of the present invention can be preferably used as a retardation film ( ⁇ / 4 retardation film) of an organic EL image display device.
  • FIG. 2 is an exploded cross-sectional view of the organic EL image display device 200.
  • the organic EL image display device 200 has an organic EL element 300 (display cell), a polarizing plate 100 (circular polarizing plate), and an adhesive layer 400 arranged between them.
  • the organic EL element 300 has a metal electrode 302, a light emitting layer 303, a transparent electrode (ITO, etc.) 304, and a sealing layer 305 in this order on a substrate 301 such as glass or polyimide.
  • the metal electrode 302 may be composed of a reflective electrode and a transparent electrode.
  • the metal electrode 302 can function as a cathode.
  • the metal electrode 302 in order to facilitate electron injection and increase the luminous efficiency, it is preferable to use a substance having a small work function, and Mg-Ag and Al-Li are usually used.
  • the light emitting layer 303 is a laminate of organic thin films, for example, a laminate of a hole injection layer made of a triphenylamine derivative or the like and a light emitting layer made of a fluorescent organic solid such as anthracene, or such a light emitting layer. It may be a laminate of an electron injection layer composed of a perylene derivative or the like, a hole injection layer thereof, a light emitting layer, a laminate of an electron injection layer, or the like.
  • the transparent electrode 304 can function as an anode.
  • the transparent electrode 304 can usually be made of a transparent conductor such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the polarizing plate 100 is arranged on the surface of the organic EL element 300 on the visual side.
  • the polarizing plate 100 is the above-mentioned polarizing plate 100 (see FIG. 1), and the optical film 102 ( ⁇ / 4 retardation film) is arranged so as to be located between the organic EL element 301 and the polarizer 101.
  • the angle formed by the transmission axis (or absorption axis) of the polarizer 101 and the in-plane slow phase axis of the optical film 102 is preferably 45 ° (or 135 °).
  • the opposing film 103 further has a hard coat layer (not shown) arranged on the surface on the visual side (the surface opposite to the polarizer 101).
  • the hard coat layer can not only prevent scratches on the surface of the organic EL image display device, but also reduce the warp of the polarizing plate 100. Further, an antireflection layer may be further formed on the hard coat layer.
  • the adhesive layer 400 is arranged between the organic EL element 300 and the polarizing plate 100, and these are adhered to each other.
  • the adhesive constituting the adhesive layer 400 include a heat-curable adhesive (epoxy-based heat-curable adhesive, urethane-based heat-curable adhesive, acrylic-based heat-curable adhesive, etc.), hot-melt adhesive, and the like. (Rubber-based hot-melt adhesive, polyester-based hot-melt adhesive, polyolefin-based hot-melt adhesive, ethylene-vinyl acetate resin-based hot-melt adhesive, polyurethane resin hot-melt adhesive, etc.) are included.
  • the light emitting layer 303 is formed of an extremely thin film having a thickness of about 10 nm. Therefore, the light emitting layer 303 also transmits light almost completely like the transparent electrode 304. As a result, the light that is incident from the outside of the organic EL image display device 200 when it is not emitting light, passes through the sealing layer 305, the transparent electrode 304, and the light emitting layer 303 and reaches the metal electrode 302 is reflected by the metal electrode 302. It passes through the light emitting layer 303, the transparent electrode 302, and the sealing layer 305 again, and tries to come out to the surface side of the organic EL device 200. At this time, the optical film 102 suppresses the light reflected by the metal electrode 302 from leaking to the surface side of the organic EL image display device 200, thereby reducing the reflection of external light.
  • the phase is reversed by 180 degrees and becomes circularly polarized light in the opposite direction.
  • the reflected light is incident on the optical film 102, it is converted into linearly polarized light perpendicular to the transmission axis of the polarizer 101 (parallel to the absorption axis), so that the reflected light is absorbed by the polarizer 101 and emitted to the outside. Can be suppressed.
  • an optical film 102 containing a specific dye compound is used.
  • the optical film 102 (the cycloolefin-based resin film containing no dye compound could not be converted into the desired linearly polarized light) is perpendicular to the transmission axis of the polarizer 101 even for light in a specific wavelength region ( It can be converted to linearly polarized light (parallel to the absorption axis).
  • the optical film 102 is excellent in light resistance even if it contains a dye compound, and display unevenness due to this can be suppressed.
  • Example 1 1. Optical film material (1) Cycloolefin resin ⁇ Synthesis of cycloolefin resin 1 >> 100 parts by mass of purified toluene and 100 parts by mass of norbornene carboxylic acid methyl ester (see structural formula A below) were put into a reaction vessel. Then, 25 mmol% of ethylhexanoate-Ni dissolved in toluene (vs. monomer mass), 0.225 mol% of tri (pentafluorophenyl) boron (vs. monomer mass), and 0.25 mol% of triethylaluminum dissolved in toluene (vs.).
  • the monomer mass was put into a reaction vessel and reacted for 18 hours with stirring at room temperature. After completion of the reaction, the reaction mixture was poured into excess ethanol to form a polymer precipitate. The precipitate was purified and the obtained solid was dried in vacuum at 65 ° C. for 24 hours to obtain a cycloolefin resin (P-1) (weight average molecular weight Mw: 140,000, Tg: 140 ° C.). The weight average molecular weight was measured by the method described above.
  • the calculation of the energy level of HOMO by the molecular orbital calculation of the exemplary dye compound and the comparative compound having the structure represented by the general formula (1) is calculated by using B3LYP as a general function and 6-31G (d) as a basis function. It can be calculated by using the molecular orbital calculation software using the above, and the software is not particularly limited, and any of them can be used in the same manner.
  • the calculation was performed using Gaussian 09 (Revision C.01, MJ Frisch, et al, Gaussian, Inc., 2010.) manufactured by Gaussian, USA as software for calculating the molecular orbital.
  • Gaussian 09 Revision C.01, MJ Frisch, et al, Gaussian, Inc., 2010.
  • the HOMO energy level values of the calculation results are shown in Table I.
  • the maximum absorption wavelength of the above compound was determined by measuring the absorption spectrum of the dye compound in dichloromethane using an ultraviolet-visible spectrophotometer UV-2450 manufactured by Shimadzu Corporation, and is shown in Table II.
  • the "maximum absorption wavelength” in the invention means a wavelength (nm) showing the maximum and maximum absorbance (absorption intensity) in the absorption spectrum of the compound obtained when the absorption spectrum of the compound is measured.
  • Fine particles (Aerosil R812: manufactured by Nippon Aerosil Co., Ltd., primary average particle size: 7 nm, apparent specific gravity 50 g / L): 4 parts by mass
  • Dichloromethane 48 parts by mass
  • Ethanol 48 parts by mass
  • Cycloolefin resin 1 100 parts by mass Dichloromethane: 302 parts by mass Ethanol: 18 parts by mass
  • Example dye compound 1 0.1 parts by mass Fine particle additive: 10 parts by mass
  • the prepared dope is cast from a casting die on an endless metal support driven at a speed of 30 m / min, and a dry air of 40 ° C. is blown on the support to provide a self-supporting casting film. It was dried until a (film-like substance) was obtained. Then, the mixture was cooled to 10 ° C., and the cast film was peeled off from the support. Then, the peeled cast film was dried at 110 ° C. for 30 minutes, and then stretched at 170 ° C. in the direction of 45 ° (diagonal direction) with respect to the width direction at a stretching ratio of 2 times.
  • an optical film 101 having a film thickness of 40 ⁇ m and having an in-plane delayed phase axis in a direction of about 45 ° with respect to the width direction was obtained. It was confirmed that the optical film 101 is a film having a retardation value Ro of 145 nm and functioning as a ⁇ / 4 plate by the above-mentioned retardation value evaluation method.
  • the light transmittance was measured using a spectrophotometer (Hitachi High-Tech Science U-3300) according to JIS K 7375: 2008 "Plastic-How to determine total light transmittance and total light reflectance”. When the light transmittance was 80% or more, it was set as “ ⁇ ”, and when it was less than 80%, it was set as “ ⁇ ”.
  • the optical film produced above was subjected to a light resistance test.
  • the prepared film was continuously irradiated with light from a xenon lamp (60 W / m 2 ) for 100 hours, and the absorbance of the thin film before (0 hours) and after (100 hours) irradiation was measured with a spectrophotometer.
  • the dye residual rate was measured according to (1).
  • Dye residual rate (%) ⁇ (A 100 ) / (A 0 ) ⁇ ⁇ 100 (However, A 0 is the absorbance before irradiation with the xenon lamp, and A 100 is the absorbance after irradiation with the xenon lamp.)
  • the "absorbance" represents the absorbance of each compound at the maximum absorption wavelength, and the higher the dye residual ratio, the more difficult the compound is decomposed by light and the higher the light resistance. The light resistance was evaluated according to the following criteria.
  • Dye residual rate is 65% or more
  • the optical film of the present invention is excellent in light transmittance, light resistance and durability by using a dye compound having a structure represented by the general formula (1) according to the present invention. it is obvious.
  • the composition for coating was prepared by mixing and stirring well.
  • the obtained coating composition was applied on a 25 ⁇ m-thick COP substrate with a wire bar, dried, and UV-cured to produce an optical film 201 having a functional layer (hard coat layer) with a thickness of 5 ⁇ m. ..
  • the optical films 202 to 212 were produced in the same manner except that the exemplary dye compounds were changed as shown in Table IV.
  • the optical films 201 to 212 produced were evaluated for light resistance and durability in the same manner as in Example 1. The results are shown in Table IV.
  • the optical film of the present invention has a light transmittance similar to that of Example 1 by using a compound having a structure represented by the general formula (1) according to the present invention in the functional layer. It is clear that it is excellent in light resistance and durability.
  • Example 3 The polarizing plate was prepared and evaluated using the optical films prepared in Examples 1 and 2.
  • Preparation of polarizing plate 301> Preparation of Polarizer A long polyvinyl alcohol film with a thickness of 60 ⁇ m is continuously conveyed via a guide roll and immersed in a dyeing bath (30 ° C.) containing iodine and potassium iodide for dyeing treatment. After 5 times stretching treatment, in an acidic bath (60 ° C.) to which boric acid and potassium iodide were added, a total of 5 times stretching treatment and cross-linking treatment were carried out, and iodine having a thickness of 12 ⁇ m was obtained. -The PVA-based polarizer was dried in a dryer at 50 ° C. for 30 minutes to obtain a polarizer having a moisture content of 4.9%.
  • UV curable Adhesive The following components were mixed to obtain a liquid UV curable adhesive (UV adhesive).
  • the optical film 101 is bonded to one surface of the produced polarizing element, and the TAC film, which is an opposing film, is bonded to the other surface by a roll-to-roll method via an ultraviolet curable adhesive. rice field.
  • the bonding is performed so that the slow axis (or phase advance axis) of the optical film 101 and the absorption axis (or transmission axis) of the polarizer coincide with each other (the in-plane slow axis of the optical film 101 and the absorption axis of the polarizer).
  • the angle between the two was 45 °).
  • the ultraviolet curable adhesive was cured to obtain a polarizing plate 301. Since the polarizing plate 301 is manufactured by a roll-to-roll method, the elongated polarizing plate is finally cut along the width direction to obtain a sheet-shaped polarizing plate 301.
  • the produced polarizing plate 301 is attached to a portion of a commercially available organic EL image display device on which the polarizing plate on the visual side is peeled off so that the optical film 101 side of the polarizing plate is on the organic EL element side, and the organic EL image is displayed.
  • the device 301 was manufactured.
  • ⁇ Light leakage evaluation> The organic EL image display device produced above is stored in an environment of 60 ° C. and 90% RH for 500 hours, then placed at room temperature and humidity (23 ° C. and 55% RH) for 24 hours, and displayed in black in a dark room. The appearance of display unevenness due to light leakage from the screen at that time was visually observed and evaluated according to the following criteria. ⁇ : No display unevenness due to light leakage ⁇ : Some display unevenness is observed due to light leakage ⁇ : Display unevenness clearly occurs due to light leakage
  • the optical film of the present invention has high transparency, prevents light leakage, and is excellent in light resistance and durability under harsh environmental conditions, so that it can be suitably used for polarizing plates and organic electroluminescence image display devices.
  • Polarizing plate 101 Polarizer 102 Optical film 103 Opposing film 104 Adhesive layer 200 Organic EL image display device 300 Organic EL element 301 Substrate 302 Metal electrode 303 Light emitting layer 304 Transparent electrode 305 Sealing layer 400 Adhesive layer

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Polarising Elements (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention aborde le problème de fournir un film optique qui, lorsqu'il est appliqué à un dispositif d'affichage d'image, empêche une fuite de lumière en dépit d'une transparence élevée et présente également une excellente résistance à la lumière et une excellente durabilité dans des conditions environnementales difficiles ; et une plaque de polarisation ainsi qu'un dispositif d'affichage d'image à électroluminescence organique qui sont pourvus du film optique.　Le film optique selon la présente invention contient une résine thermoplastique et est caractérisé en ce qu'il contient un composé ayant une structure représentée par la formule générale (1). (Dans la formule, Z représente un groupe hétéroaryle ayant deux hétéroatomes ou plus et est facultativement substitué.)
PCT/JP2021/006251 2020-02-28 2021-02-19 Film optique, plaque de polarisation et dispositif d'affichage d'images à électroluminescence organique WO2021172179A1 (fr)

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CN202180016225.4A CN115136045A (zh) 2020-02-28 2021-02-19 光学膜、偏振片及有机电致发光图像显示装置
KR1020227018850A KR20220097949A (ko) 2020-02-28 2021-02-19 광학 필름, 편광판 및 유기 일렉트로루미네센스 화상 표시 장치

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267913B1 (en) * 1996-11-12 2001-07-31 California Institute Of Technology Two-photon or higher-order absorbing optical materials and methods of use
JP2006521220A (ja) * 2003-03-25 2006-09-21 ランクセス ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツング 情報層中にポリマー網目を含有する光学データ媒体
WO2019004042A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Film optique
WO2019004047A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Composition d'adhésif, et film avec couche d'adhésif
WO2019004043A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Feuille adhésive et film ayant une couche adhésive
WO2019004046A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Composition d'adhésif, et film avec couche d'adhésif
WO2019073869A1 (fr) * 2017-10-13 2019-04-18 住友化学株式会社 Résine et composition adhésive

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101127586B1 (ko) 2010-02-24 2012-03-22 삼성모바일디스플레이주식회사 고투과 편광판 및 이를 구비하는 유기 발광 장치
WO2017015996A1 (fr) 2015-07-28 2017-02-02 东莞市凯欣电池材料有限公司 Sel de métal alcalin de type phosphonitrile fluoroalkyle sulfimide et solution d'électrolyte contenant le sel de métal
JP2017165941A (ja) 2015-12-25 2017-09-21 日東電工株式会社 有機ｅｌ表示装置用粘着剤組成物、有機ｅｌ表示装置用粘着剤層、有機ｅｌ表示装置用粘着剤層付き偏光フィルム、及び有機ｅｌ表示装置
JP7418943B2 (ja) 2016-04-29 2024-01-22 三星ディスプレイ株式會社 表示装置
CN110461951B (zh) * 2017-03-09 2022-04-08 富士胶片株式会社 组合物、二色性物质、吸光各向异性膜、层叠体及图像显示装置
JP6510113B2 (ja) 2017-05-09 2019-05-08 日東電工株式会社 光学部材用組成物、光学部材及び画像表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267913B1 (en) * 1996-11-12 2001-07-31 California Institute Of Technology Two-photon or higher-order absorbing optical materials and methods of use
JP2006521220A (ja) * 2003-03-25 2006-09-21 ランクセス ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツング 情報層中にポリマー網目を含有する光学データ媒体
WO2019004042A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Film optique
WO2019004047A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Composition d'adhésif, et film avec couche d'adhésif
WO2019004043A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Feuille adhésive et film ayant une couche adhésive
WO2019004046A1 (fr) * 2017-06-27 2019-01-03 住友化学株式会社 Composition d'adhésif, et film avec couche d'adhésif
WO2019073869A1 (fr) * 2017-10-13 2019-04-18 住友化学株式会社 Résine et composition adhésive

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KR20220097949A (ko) 2022-07-08
CN115136045A (zh) 2022-09-30
TW202147660A (zh) 2021-12-16

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