WO2018221324A1 - 偏光フィルムおよび画像表示装置 - Google Patents

偏光フィルムおよび画像表示装置 Download PDF

Info

Publication number
WO2018221324A1
WO2018221324A1 PCT/JP2018/019672 JP2018019672W WO2018221324A1 WO 2018221324 A1 WO2018221324 A1 WO 2018221324A1 JP 2018019672 W JP2018019672 W JP 2018019672W WO 2018221324 A1 WO2018221324 A1 WO 2018221324A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
polarizing film
layer
polarizer
adhesive layer
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/JP2018/019672
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
康隆 石原
岸　敦史
友徳 上野
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
Priority to CN201880036594.8A priority Critical patent/CN110692001B/zh
Priority to KR1020197033736A priority patent/KR102575477B1/ko
Publication of WO2018221324A1 publication Critical patent/WO2018221324A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual 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
    • 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

Definitions

  • the present invention relates to a polarizing film.
  • the polarizing film can form an image display device such as a liquid crystal display device (LCD) or an organic EL display device alone or as an optical film obtained by laminating the polarizing film.
  • LCD liquid crystal display device
  • organic EL display device alone or as an optical film obtained by laminating the polarizing film.
  • polarizing films In a liquid crystal display device, it is indispensable to dispose polarizing films on both sides of a glass substrate that forms the surface of a liquid crystal panel because of its image forming method.
  • a polarizing film in which a protective film is bonded to one or both sides of a polarizer made of a dichroic material such as a polyvinyl alcohol film and iodine with a polyvinyl alcohol adhesive or the like is used. .
  • Patent Documents 1 and 2 describe that the direct transmittance of the polarizing film can be maintained even at high temperatures.
  • the polarizing film may be used in a high temperature and high humidity environment in addition to a high temperature environment. Moreover, the said polarizing film may be used in combination with another resin film by an adhesive layer etc. However, depending on the resin film, for example, 85 ° C., 85% R.D. H. It was found that components such as ions, which become impurities, may elute when kept in a high temperature and high humidity environment. And the said elution component raises the moisture content of a polarizer by moving in an adhesive layer and invading into a polarizer, As a result, the degree of polarization of a polarizer falls, and a polarizing film It was found that the optical characteristics are greatly reduced. However, the provision of the urethane resin as in Patent Documents 1 and 2 on the polarizer has not been able to sufficiently suppress the deterioration of the optical properties of the polarizing film.
  • An object of the present invention is to provide a polarizing film that can suppress a decrease in optical properties even in a high temperature and high humidity environment.
  • Another object of the present invention is to provide an image display device having the polarizing film.
  • the present invention is a polarizing film having a resin film on at least one side of a polarizer,
  • the resin film is 85 ° C., 85% R.D. H.
  • the elution component is generated when left for 300 hours under the humid heat condition, and
  • the present invention relates to a polarizing film comprising a transparent block layer that suppresses migration of the eluted component toward the polarizer between the polarizer and the resin film.
  • the polarizing film may have an adhesive layer or an adhesive layer between the polarizer and the resin film.
  • the pressure-sensitive adhesive layer or the adhesive layer can be provided between the transparent block layer and the resin film.
  • the pressure-sensitive adhesive layer or the adhesive layer can be provided between the polarizer and the transparent block layer.
  • the thickness of the polarizer is preferably 10 ⁇ m or less.
  • the thickness of the transparent block layer is preferably 3 ⁇ m or less.
  • a cured product of a forming material containing a urethane prepolymer that is a reaction product of an isocyanate compound and a polyhydric alcohol can be used as the transparent block layer.
  • the isocyanate compound it is preferable to use at least one selected from tolylene diisocyanate and diphenylmethane diisocyanate.
  • a resin film containing triacetyl cellulose can be used as the resin film.
  • the pressure-sensitive adhesive layer or adhesive layer, the resin film, and the transparent block layer have only on one side of the polarizer, A protective film may be provided on the other surface of the polarizer.
  • the present invention also relates to an image display device having the polarizing film.
  • Various types of resin films can be used in combination for the polarizing film.
  • components such as ions that become impurities may be eluted in a high-temperature and high-humidity environment. . And the said elution component penetrate
  • the polarizing film of the present invention has a transparent block layer that suppresses the migration of the eluted component to the polarizer side between the polarizer and the resin film.
  • the said transparent block layer can prevent that the elution component from the said resin film transfers to a polarizer. For this reason, even under a high temperature and high humidity environment, it is possible to prevent the elution component from being transferred to the polarizer, which may cause a decrease in the optical characteristics of the polarizer, and to suppress the deterioration of the optical characteristics.
  • the polarizing film of this invention has the polarizer P and the resin film 2 as shown in FIGS. 1-4, and has the transparent block layer 1 among them.
  • the transparent block layer 1 can be directly provided on the polarizer P or the resin film 2. 1 to 4 exemplify the case where the transparent block layer 1 and the resin film 2 are provided only on one side of the polarizer P, these can be provided on both sides of the polarizer P.
  • the polarizing film of the present invention can have a pressure-sensitive adhesive layer or an adhesive layer 3 between the polarizer P and the resin film 2.
  • the polarizing film of FIG. 2 is a case where the pressure-sensitive adhesive layer or adhesive layer 3 is between the transparent block layer 1 and the resin film 2.
  • the transparent block layer 1 can be directly provided on the polarizer P.
  • the polarizing film of FIG. 3 is a case where the pressure-sensitive adhesive layer or adhesive layer 3 is between the polarizer P and the transparent block layer 1.
  • the transparent block layer 1 can be directly provided on the resin film 2.
  • the polarizing film of the present invention can be provided with a protective film 4 on the polarizer P as shown in FIG. 4 exemplifies a case where the pressure-sensitive adhesive layer or the adhesive layer 3 is not provided, but FIG. 4 may include the pressure-sensitive adhesive layer or the adhesive layer 3 in the same manner as in FIGS. it can.
  • the polarizer P and the protective film 4 are laminated via intervening layers such as an adhesive layer, a pressure-sensitive adhesive layer, and an undercoat layer (primer layer).
  • the said easily bonding layer and an adhesive bond layer can be laminated
  • a second pressure-sensitive adhesive layer or the like can be further formed on the resin film 2 in the polarizing film of FIGS.
  • a separator can be provided on the pressure-sensitive adhesive layer.
  • a surface protective film can be appropriately provided in the polarizing film of the present invention.
  • the polarizer is not particularly limited, and various types can be used.
  • polarizers include dichroic iodine and dichroic dyes on hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
  • hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
  • examples thereof include polyene-based oriented films such as those obtained by adsorbing substances and uniaxially stretched, polyvinyl alcohol dehydrated products and polyvinyl chloride dehydrochlorinated products.
  • a polarizer composed of a polyvinyl alcohol film and a dichroic substance such as iodine is preferable.
  • the thickness of these polarizers is not particularly limited, but is generally about 80 ⁇ m or less.
  • a polarizer obtained by dyeing a polyvinyl alcohol film with iodine and uniaxially stretching it can be prepared, for example, by dyeing a polyvinyl alcohol film in an aqueous solution of iodine and stretching it 3 to 7 times the original length. it can. If necessary, it can be immersed in an aqueous solution of potassium iodide or the like which may contain boric acid, zinc sulfate, zinc chloride or the like. Further, if necessary, the polyvinyl alcohol film may be immersed in water and washed before dyeing.
  • the polyvinyl alcohol film In addition to washing the polyvinyl alcohol film surface with stains and antiblocking agents by washing the polyvinyl alcohol film with water, the polyvinyl alcohol film is also swollen to prevent unevenness such as uneven coloring. is there. Stretching may be performed after dyeing with iodine, may be performed while dyeing, or may be dyed with iodine after stretching. The film can be stretched even in an aqueous solution of boric acid or potassium iodide or in a water bath.
  • a polarizer having a thickness of 10 ⁇ m or less can be used.
  • the thickness of the polarizer is preferably 8 ⁇ m or less from the viewpoint of thinning, more preferably 7 ⁇ m or less, and further preferably 6 ⁇ m or less.
  • the thickness of the polarizer is preferably 2 ⁇ m or more, and more preferably 3 ⁇ m or more.
  • Such a thin polarizer has less thickness unevenness, excellent visibility, and less dimensional change, and therefore excellent durability against thermal shock.
  • Patent No. 4751486 Japanese Patent No. 4751481, Patent No. 4815544, Patent No. 5048120, International Publication No. 2014/077599 pamphlet, International Publication No. 2014/077636 Pamphlet, And the thin polarizers obtained from the production methods described therein.
  • the polarizer has an optical characteristic expressed by a single transmittance T and a polarization degree P of the following formula P> ⁇ (10 0.929T-42.4 ⁇ 1) ⁇ 100 (where T ⁇ 42.3), Or It is configured to satisfy the condition of P ⁇ 99.9 (however, T ⁇ 42.3).
  • a polarizer configured so as to satisfy the above-described conditions uniquely has performance required as a display for a liquid crystal television using a large display element. Specifically, the contrast ratio is 1000: 1 or more and the maximum luminance is 500 cd / m 2 or more. As other uses, for example, it is bonded to the viewing side of the organic EL display device.
  • Patent No. 4751486, Patent in that it can be stretched at a high magnification and the polarization performance can be improved.
  • stretching in a boric-acid aqueous solution as described in the 4751481 specification and the patent 4815544 specification is preferable, and it describes especially in the patent 4751481 specification and the patent 4815544 specification.
  • stretching in the boric-acid aqueous solution which has this is preferable.
  • These thin polarizers can be obtained by a production method including a step of stretching a polyvinyl alcohol-based resin (hereinafter also referred to as PVA-based resin) layer and a stretching resin base material in a laminated state and a step of dyeing.
  • PVA-based resin polyvinyl alcohol-based resin
  • a stretching resin base material in a laminated state
  • dyeing a step of dyeing
  • the polarizing film of the present invention is a resin film at 85 ° C. and 85% R.D. H. Those which generate elution components when left for 300 hours under humidified heat conditions. When using such a resin film, the polarizing film of the present invention is effective. Specifically, the elution component of the resin film can be confirmed by the following method and the method described in Examples.
  • Such a resin film in which an elution component can be generated is, for example, a sample in which an adhesive layer is bonded to a resin film at 85 ° C. and 85% R.D. H. This can be carried out by leaving it for 300 hours under humidifying heat conditions and detecting the eluted components from the adhesive layer before and after leaving. Detection of the eluted component from the pressure-sensitive adhesive layer can be performed by component analysis by ion chromatography. It can be confirmed that the detected amount after being left is larger than the detected amount before being left, so that the resin film can generate an elution component.
  • Examples of the elution component detected after standing include low molecular components included as additives such as acetate ions and antioxidants generated by hydrolysis of a triacetylcellulose-based film. Is increased by 0.5 ⁇ g / g or more, it can be confirmed that the resin film is capable of generating elution components.
  • the resin film in which the elution component can be generated is, for example, a sample in which an adhesive layer is bonded to a resin film at 85 ° C. and 85% R.D. H. This can be carried out by leaving it for 300 hours under humidifying heat conditions and measuring the saturated moisture content of the pressure-sensitive adhesive layer before and after being left. When the saturated moisture content of the pressure-sensitive adhesive layer after being left is increased by 0.1% or more than the saturated moisture content of the pressure-sensitive adhesive layer before being left, it is confirmed that the resin film can generate an elution component. be able to.
  • the material constituting the resin film examples include cellulose polymers such as diacetyl cellulose and triacetyl cellulose, and liquid crystal polymers used as retardation films.
  • cellulose polymers such as diacetyl cellulose and triacetyl cellulose
  • liquid crystal polymers used as retardation films.
  • a resin film containing triacetyl cellulose is preferred because it is most commonly used and has many elution components. Acetic acid ions resulting from hydrolysis of polymer components in the resin film, low molecular weight components resulting from film additives, and the like are detected as elution components.
  • the resin film may contain one or more arbitrary appropriate additives.
  • Additives include, for example, antioxidants, plasticizers, UV absorbers, lubricants, mold release agents, peroxide decomposers, radical inhibitors, metal deactivators, acid scavengers, anti-coloring agents, flame retardants Nucleating agents, antistatic agents, pigments, colorants and the like.
  • the additive can be an eluting component.
  • Specific examples of the additive that can be an elution component include plasticizers such as phosphate esters and carboxylic acid esters, hindered phenol-based, phosphorus-based, sulfur-based antioxidants, oxybenzophenone-based compounds, and benzotriazole-based compounds.
  • UV absorbers such as compounds, salicylic acid ester compounds, benzophenone compounds, cyanoacrylate compounds, nickel complex compounds, and the like.
  • the content of the constituent material (for example, cellulose polymer, liquid crystal polymer, etc.) in the resin film is preferably 50 to 100% by weight, more preferably 50 to 99% by weight, still more preferably 60 to 98% by weight, Particularly preferred is 70 to 97% by weight.
  • content of the said thermoplastic resin in a protective film is 50 weight% or less, there exists a possibility that the high transparency etc. which a thermoplastic resin originally has cannot fully be expressed.
  • the thickness of the resin film can be determined as appropriate, but is generally about 1 to 500 ⁇ m from the viewpoints of workability such as strength and handleability, and thin layer properties. In particular, it is preferably 1 to 300 ⁇ m, more preferably 5 to 200 ⁇ m, and further preferably 5 to 150 ⁇ m, particularly 20 to 100 ⁇ m.
  • the resin film can be provided with an easy adhesion layer on the transparent block layer side.
  • the easy adhesion layer can be formed of, for example, various resins having a polyester skeleton, a polyether skeleton, a polycarbonate skeleton, a polyurethane skeleton, a silicone-based, a polyamide skeleton, a polyimide skeleton, a polyvinyl alcohol skeleton, and the like. These polymer resins can be used alone or in combination of two or more. Moreover, you may add another additive for formation of an easily bonding layer. Specifically, a stabilizer such as a tackifier, an ultraviolet absorber, an antioxidant, and a heat resistance stabilizer may be used.
  • the easy adhesion layer is usually provided in advance on a resin film, and the easy adhesion layer side of the resin film and a polarizer are laminated with an adhesive layer.
  • the easy-adhesion layer is formed by applying and drying a material for forming the easy-adhesion layer on a protective film by a known technique.
  • the material for forming the easy-adhesion layer is usually adjusted as a solution diluted to an appropriate concentration in consideration of the thickness after drying and the smoothness of coating.
  • the thickness of the easy-adhesion layer after drying is preferably 0.01 to 5 ⁇ m, more preferably 0.02 to 2 ⁇ m, and still more preferably 0.05 to 1 ⁇ m. Note that a plurality of easy-adhesion layers can be provided, but also in this case, the total thickness of the easy-adhesion layers is preferably in the above range.
  • a functional layer such as a hard coat layer, an antireflection layer, an antisticking layer, a diffusion layer or an antiglare layer can be provided.
  • the hard coat layer, the antireflection layer, the antisticking layer, the diffusion layer, the antiglare layer, and other functional layers can be provided on the protective film itself, or can be provided separately from the protective film. it can.
  • the transparent block layer is also effective in suppressing the migration of the eluted component from the functional layer such as the easy adhesion layer and the hard coat layer formed on the resin film to the polarizer side.
  • Transparent block layer a layer that can prevent the migration of the eluted components from the resin film is used.
  • the thickness of the transparent block layer is preferably 3 ⁇ m or less, more preferably 2 ⁇ m or less, further preferably 1.5 ⁇ m or less, It is preferable that it is 1 micrometer or less.
  • the thickness of the transparent block layer is preferably 0.1 ⁇ m or more, more preferably 0.2 ⁇ m or more, and further preferably 0.3 ⁇ m or more from the viewpoint of exhibiting sufficient block property. .
  • a material having transparency and capable of preventing migration of eluted components can be used.
  • examples of such a material include a forming material containing a urethane prepolymer which is a reaction product of an isocyanate compound and a polyhydric alcohol.
  • a polyfunctional isocyanate compound for example, a polyfunctional isocyanate compound is preferable, and specific examples include a polyfunctional aromatic isocyanate compound, an alicyclic isocyanate compound, an aliphatic isocyanate compound, or a dimer thereof.
  • polyfunctional aromatic isocyanate compound examples include phenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 2,2′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, 4 4,4'-toluidine diisocyanate, 4,4'-diphenyl ether diisocyanate, 4,4'-diphenyl diisocyanate, 1,5-naphthalene diisocyanate, xylylene diisocyanate, methylene bis 4-phenyl isocyanate, p-phenylene diisocyanate, and the like.
  • polyfunctional alicyclic isocyanate compound examples include 1,3-cyclopentene diisocyanate, 1,3-cyclohexane diisocyanate, 1,4-cyclohexane diisocyanate, 1,3-bisisocyanatomethylcyclohexane, isophorone diisocyanate, hydrogen Added diphenylmethane diisocyanate, hydrogenated xylylene diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated tetramethylxylylene diisocyanate, and the like.
  • polyfunctional aliphatic isocyanate compound examples include trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, pentamethylene diisocyanate, 1,2-propylene diisocyanate, 1,3-butylene diisocyanate, dodecamethylene diisocyanate, 2,4,4 Examples include 4-trimethylhexamethylene diisocyanate.
  • polyfunctional isocyanate compound examples include those having three or more isocyanate groups such as isocyanuric acid tris (6-inocyanate hexyl).
  • polyhydric alcohol examples include ethylene glycol, diethylene glycol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, 2-butyl-2-ethyl- 1,3-propanediol, 2,4-diethyl-1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, 1,8-octanediol, 1,9-nonanediol, 2- Examples thereof include methyl-1,8-octanediol, 1,8-decanediol, octadecanediol, glycerin, trimethylolpropane, pentaerythritol, hexanetriol, and polypropylene glycol.
  • the polyfunctional isocyanate compound can be used alone or in combination of two or more, but an aromatic isocyanate compound is preferred from the viewpoint of adjusting the moisture content.
  • Other polyfunctional isocyanate compounds can be used in combination with aromatic isocyanate compounds.
  • trimethylolpropane-tri-tolylene isocyanate and trimethylolpropane-tri-diphenylmethane diisocyanate are preferably used.
  • the urethane prepolymer having a terminal isocyanate group with a protecting group may be used.
  • Protecting groups include oximes and lactams.
  • the protecting group is dissociated from the isocyanate group by heating, and the isocyanate group reacts.
  • a reaction catalyst can be used to increase the reactivity of the isocyanate group.
  • the reaction catalyst is not particularly limited, but a tin-based catalyst or an amine-based catalyst is suitable.
  • the reaction catalyst can use 1 type (s) or 2 or more types.
  • the amount of the reaction catalyst used is usually 5 parts by weight or less with respect to 100 parts by weight of the urethane prepolymer. When the amount of the reaction catalyst is large, the crosslinking reaction rate increases and foaming of the forming material occurs. Even if the forming material after foaming is used, sufficient adhesion cannot be obtained.
  • a reaction catalyst it is preferably 0.01 to 5 parts by weight, more preferably 0.05 to 4 parts by weight.
  • the tin-based catalyst both inorganic and organic catalysts can be used, but an organic catalyst is preferred.
  • the inorganic tin-based catalyst include stannous chloride and stannic chloride.
  • the organic tin-based catalyst is preferably one having at least one organic group such as an aliphatic group or alicyclic group having a skeleton such as a methyl group, an ethyl group, an ether group or an ester group. Examples include tetra-n-butyltin, tri-n-butyltin acetate, n-butyltin trichloride, trimethyltin hydroxide, dimethyltin dichloride, dibutyltin dilaurate and the like.
  • the amine catalyst is not particularly limited. For example, those having at least one organic group such as an alicyclic group such as quinoclidine, amidine, and diazabicycloundecene are preferable.
  • examples of the amine catalyst include triethylamine.
  • reaction catalysts other than the above include cobalt naphthenate and benzyltrimethylammonium hydroxide.
  • the urethane prepolymer is usually used as a solution.
  • the solution may be a solvent system or an aqueous system such as an emulsion, a colloidal dispersion, or an aqueous solution.
  • the organic solvent is not particularly limited as long as the components constituting the forming material are uniformly dissolved. Examples of the organic solvent include toluene, methyl ethyl ketone, ethyl acetate and the like.
  • alcohols such as n-butyl alcohol and isopropyl alcohol and ketones such as acetone can be blended.
  • a dispersant is used, a urethane prepolymer, a functional group having low reactivity with isocyanate groups such as carboxylate, sulfonate, and quaternary ammonium salt, and water dispersibility such as polyethylene glycol. This can be done by introducing the components.
  • Examples of the material forming the transparent block layer other than the urethane prepolymer include cyanoacrylate-based forming materials and epoxy-based forming materials.
  • the formation of the transparent block layer can be appropriately selected according to the type of the forming material, for example, can be performed by applying the forming material to a polarizer or a resin film and then curing.
  • the transparent block layer can be obtained as a coating layer. Usually, after the coating, it is carried out by forming a cured layer by drying at about 30 to 100 ° C., preferably at 50 to 80 ° C. for about 0.5 to 15 minutes. Furthermore, when the forming material contains an isocyanate component, annealing treatment is performed at about 30 to 100 ° C., preferably 50 to 80 ° C. for about 0.5 to 24 hours in order to promote the reaction. Can do.
  • the pressure-sensitive adhesive layer or adhesive layer used for pasting the transparent block layer may be one used in the polarizing film.
  • the second pressure-sensitive adhesive layer described in the section of the drawings can laminate
  • Adhesive layer An appropriate pressure-sensitive adhesive can be used for forming the pressure-sensitive adhesive layer, and the type thereof is not particularly limited.
  • Adhesives include rubber adhesives, acrylic adhesives, silicone adhesives, urethane adhesives, vinyl alkyl ether adhesives, polyvinyl alcohol adhesives, polyvinyl pyrrolidone adhesives, polyacrylamide adhesives, Examples thereof include cellulose-based pressure-sensitive adhesives.
  • pressure-sensitive adhesives those having excellent optical transparency, suitable wettability, cohesiveness, and adhesive pressure characteristics, and excellent weather resistance and heat resistance are preferably used.
  • An acrylic pressure-sensitive adhesive is preferably used as one exhibiting such characteristics.
  • the pressure-sensitive adhesive layer for example, a method in which the pressure-sensitive adhesive is applied to a release-treated separator, the polymerization solvent is dried and removed to form a pressure-sensitive adhesive layer, and then transferred to the transparent block layer, or The pressure-sensitive adhesive is applied to the transparent block layer, and the polymerization solvent is dried and removed to form the pressure-sensitive adhesive layer on the polarizer.
  • one or more solvents other than the polymerization solvent may be added as appropriate.
  • a silicone release liner is preferably used as the release-treated separator.
  • an appropriate method may be adopted as appropriate according to the purpose.
  • a method of heating and drying the coating film is used.
  • the heating and drying temperature is preferably 40 ° C to 200 ° C, more preferably 50 ° C to 180 ° C, and particularly preferably 70 ° C to 170 ° C.
  • the drying time is preferably 5 seconds to 20 minutes, more preferably 5 seconds to 10 minutes, and particularly preferably 10 seconds to 5 minutes.
  • Various methods are used as a method for forming the pressure-sensitive adhesive layer. Specifically, for example, roll coat, kiss roll coat, gravure coat, reverse coat, roll brush, spray coat, dip roll coat, bar coat, knife coat, air knife coat, curtain coat, lip coat, die coater, etc. Examples thereof include an extrusion coating method.
  • the thickness of the pressure-sensitive adhesive layer is not particularly limited, and is, for example, about 1 to 100 ⁇ m.
  • the thickness is preferably 2 to 50 ⁇ m, more preferably 2 to 40 ⁇ m, and still more preferably 5 to 35 ⁇ m.
  • the pressure-sensitive adhesive layer When the pressure-sensitive adhesive layer is exposed, the pressure-sensitive adhesive layer may be protected with a peeled sheet (separator) until practical use.
  • constituent material of the separator examples include, for example, plastic films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films, porous materials such as paper, cloth, and nonwoven fabric, nets, foam sheets, metal foils, and laminates thereof.
  • plastic films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films
  • porous materials such as paper, cloth, and nonwoven fabric, nets, foam sheets, metal foils, and laminates thereof.
  • a thin film can be used, but a plastic film is preferably used because of its excellent surface smoothness.
  • the plastic film is not particularly limited as long as it can protect the pressure-sensitive adhesive layer.
  • a polyethylene film, a polypropylene film, a polybutene film, a polybutadiene film, a polymethylpentene film, a polyvinyl chloride film, and a vinyl chloride co-polymer are used.
  • examples thereof include a polymer film, a polyethylene terephthalate film, a polybutylene terephthalate film, a polyurethane film, and an ethylene-vinyl acetate copolymer film.
  • the thickness of the separator is usually about 5 to 200 ⁇ m, preferably about 5 to 100 ⁇ m.
  • mold release and antifouling treatment with a silicone type, fluorine type, long chain alkyl type or fatty acid amide type release agent, silica powder, etc., coating type, kneading type, vapor deposition type It is also possible to carry out antistatic treatment such as.
  • the release property from the pressure-sensitive adhesive layer can be further improved by appropriately performing a release treatment such as silicone treatment, long-chain alkyl treatment, or fluorine treatment on the surface of the separator.
  • the adhesive layer is formed of an adhesive.
  • the type of the adhesive is not particularly limited, and various types can be used.
  • the adhesive layer is not particularly limited as long as it is optically transparent. Examples of the adhesive include water-based, solvent-based, hot-melt-based, active energy ray-curable types, and the like. Or an active energy ray hardening-type adhesive agent is suitable.
  • water-based adhesives examples include isocyanate-based adhesives, polyvinyl alcohol-based adhesives, gelatin-based adhesives, vinyl-based latex systems, and water-based polyesters.
  • the water-based adhesive is usually used as an adhesive composed of an aqueous solution, and usually contains 0.5 to 60% by weight of solid content.
  • the active energy ray curable adhesive is an adhesive that cures by an active energy ray such as an electron beam or ultraviolet rays (radical curable type, cationic curable type), for example, in an electron beam curable type or an ultraviolet curable type. Can be used.
  • an active energy ray such as an electron beam or ultraviolet rays (radical curable type, cationic curable type), for example, in an electron beam curable type or an ultraviolet curable type.
  • an active energy ray curable adhesive for example, a photo radical curable adhesive can be used.
  • the photo radical curable active energy ray curable adhesive is used as an ultraviolet curable adhesive, the adhesive contains a radical polymerizable compound and a photo polymerization initiator.
  • the adhesive coating method is appropriately selected depending on the viscosity of the adhesive and the target thickness.
  • coating methods include reverse coaters, gravure coaters (direct, reverse and offset), bar reverse coaters, roll coaters, die coaters, bar coaters, rod coaters and the like.
  • a method such as a dapping method can be appropriately used.
  • the adhesive is preferably applied so that the finally formed adhesive layer has a thickness of 30 to 300 nm.
  • the thickness of the adhesive layer is more preferably 60 to 250 nm.
  • the thickness of the adhesive layer is preferably 0.1 to 200 ⁇ m. More preferably, it is 0.5 to 50 ⁇ m, and still more preferably 0.5 to 10 ⁇ m.
  • the above-mentioned easily bonding layer can be provided between an adhesive layer or an adhesive bond layer.
  • the undercoat layer (primer layer) is formed to improve the adhesion between the polarizer and the resin film.
  • the material constituting the primer layer is not particularly limited as long as the material exhibits a certain degree of strong adhesion to both the resin film and the transparent block layer or both the transparent block layer and the polyvinyl alcohol-based resin layer.
  • a thermoplastic resin excellent in transparency, thermal stability, stretchability, etc. is used.
  • the thermoplastic resin include an acrylic resin, a polyolefin resin, a polyester resin, a polyvinyl alcohol resin, or a mixture thereof.
  • a material excellent in transparency, mechanical strength, thermal stability, moisture barrier property, isotropy and the like is preferable.
  • polyester polymers such as polyethylene terephthalate and polyethylene naphthalate
  • cellulose polymers such as diacetyl cellulose and triacetyl cellulose
  • acrylic polymers such as polymethyl methacrylate
  • styrene such as polystyrene and acrylonitrile / styrene copolymer (AS resin)
  • AS resin acrylonitrile / styrene copolymer
  • polyethylene, polypropylene, polyolefins having a cyclo or norbornene structure, polyolefin polymers such as ethylene / propylene copolymers, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, sulfone polymers , Polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride polymer, vinyl butyral polymer, arylate polymer, polyoxymethylene polymer, epoxy polymer, or the above Polymer blends and the like can also be mentioned as examples of the polymer forming the protective film.
  • the protective film is applied to the side opposite to the side to which the resin film is applied, based on the polarizer. Since it is optional to provide the transparent block layer of the present invention on the opposite side of the polarizer, it is preferable to use a material that does not generate an elution component even in a high-temperature and high-humidity environment as the protective film.
  • the material for such a protective film include acrylic polymers and polyolefin polymers.
  • thermoplastic resin in the protective film is preferably 50 to 100% by weight, more preferably 50 to 99% by weight, still more preferably 60 to 98% by weight, and particularly preferably 70 to 97% by weight.
  • content of the said thermoplastic resin in a protective film is 50 weight% or less, there exists a possibility that the high transparency etc. which a thermoplastic resin originally has cannot fully be expressed.
  • a retardation film As the protective film, a retardation film, a brightness enhancement film, a diffusion film, and the like can also be used.
  • the retardation film include those having a front retardation of 40 nm or more and / or a retardation having a thickness direction retardation of 80 nm or more.
  • the front phase difference is usually controlled in the range of 40 to 200 nm
  • the thickness direction phase difference is usually controlled in the range of 80 to 300 nm.
  • the retardation film functions also as a polarizer protective film, so that the thickness can be reduced.
  • the retardation film examples include a birefringent film obtained by uniaxially or biaxially stretching a thermoplastic resin film.
  • the stretching temperature, stretching ratio, and the like are appropriately set depending on the retardation value, film material, and thickness.
  • the thickness of the protective film can be appropriately determined, but is generally about 1 to 500 ⁇ m from the viewpoints of workability such as strength and handleability, and thin layer properties. In particular, it is preferably 1 to 300 ⁇ m, more preferably 5 to 200 ⁇ m, and further preferably 5 to 150 ⁇ m, particularly 20 to 100 ⁇ m.
  • a functional layer such as a hard coat layer, an antireflection layer, an antisticking layer, a diffusion layer or an antiglare layer can be provided on the surface of the protective film where the polarizer is not adhered.
  • the hard coat layer, the antireflection layer, the antisticking layer, the diffusion layer, the antiglare layer, and other functional layers can be provided on the protective film itself, or can be provided separately from the protective film. it can.
  • the protective film and the polarizer are laminated via an intervening layer such as an adhesive layer, an adhesive layer, and an undercoat layer (primer layer). At this time, it is desirable that the both are laminated without an air gap by an intervening layer.
  • an intervening layer such as the adhesive layer, the pressure-sensitive adhesive layer, and the undercoat layer (primer layer)
  • the same layers as those described above as the intervening layer can be used.
  • a surface protective film can be provided on the polarizing film of the present invention.
  • the surface protective film usually has a base film and an adhesive layer, and protects the polarizer via the adhesive layer.
  • a film material having isotropic property or close to isotropic property is selected from the viewpoints of inspection property and manageability.
  • film materials include polyester resins such as polyethylene terephthalate film, cellulose resins, acetate resins, polyether sulfone resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, acrylic resins, and the like. Examples thereof include transparent polymers such as resins. Of these, polyester resins are preferred.
  • the base film can be used as a laminate of one kind or two or more kinds of film materials, and a stretched product of the film can also be used.
  • the thickness of the base film is generally 500 ⁇ m or less, preferably 10 to 200 ⁇ m.
  • the pressure-sensitive adhesive that forms the pressure-sensitive adhesive layer of the surface protective film includes a (meth) acrylic polymer, a silicone-based polymer, a polyester, a polyurethane, a polyamide, a polyether, a fluorine-based or a rubber-based pressure-sensitive adhesive. Can be appropriately selected and used. From the viewpoints of transparency, weather resistance, heat resistance and the like, an acrylic pressure-sensitive adhesive having an acrylic polymer as a base polymer is preferable.
  • the thickness (dry film thickness) of the pressure-sensitive adhesive layer is determined according to the required adhesive force. Usually, it is about 1 to 100 ⁇ m, preferably 5 to 50 ⁇ m.
  • the surface protective film can be provided with a release treatment layer on the surface opposite to the surface on which the pressure-sensitive adhesive layer is provided on the base film, using a low adhesion material such as silicone treatment, long-chain alkyl treatment, or fluorine treatment. .
  • the polarizing film of the present invention can be used as an optical film laminated with another optical layer in practical use.
  • the optical layer is not particularly limited.
  • a liquid crystal display device such as a reflection plate, a semi-transmission plate, a retardation plate (including wavelength plates such as 1/2 and 1/4), and a viewing angle compensation film.
  • One or more optical layers that may be used can be used.
  • a reflective polarizing film or semi-transmissive polarizing film in which a polarizing plate or a semi-transmissive reflecting plate is further laminated on the polarizing film of the present invention an elliptical polarizing film or circularly polarizing film in which a retardation film is further laminated on a polarizing film.
  • a wide viewing angle polarizing film obtained by further laminating a viewing angle compensation film on a film or a polarizing film, or a polarizing film obtained by further laminating a brightness enhancement film on the polarizing film is preferred.
  • An optical film obtained by laminating the above optical layer on a polarizing film can be formed by a method of sequentially laminating separately in the manufacturing process of a liquid crystal display device or the like. It is excellent in stability and assembly work, and has the advantage of improving the manufacturing process of a liquid crystal display device and the like.
  • an appropriate adhesive means such as a pressure-sensitive adhesive layer can be used.
  • their optical axes can be set at an appropriate arrangement angle in accordance with the target retardation characteristics.
  • the polarizing film or optical film of the present invention can be preferably used for forming various image display devices such as liquid crystal display devices and organic EL display devices.
  • the liquid crystal display device can be formed according to the conventional method. That is, a liquid crystal display device is generally formed by appropriately assembling components such as a liquid crystal cell, a polarizing film or an optical film, and an illumination system as necessary, and incorporating a drive circuit. There is no limitation in particular except the point which uses a polarizing film or an optical film by invention, and it can apply according to the former.
  • As the liquid crystal cell an arbitrary type such as an IPS type or a VA type can be used, but is particularly suitable for the IPS type.
  • liquid crystal display devices such as a liquid crystal display device in which a polarizing film or an optical film is disposed on one side or both sides of a liquid crystal cell, or a backlight or a reflector used in an illumination system can be formed.
  • the polarizing film or optical film by this invention can be installed in the one side or both sides of a liquid crystal cell.
  • polarizing film or an optical film on both sides they may be the same or different.
  • a single layer or a suitable part such as a diffusing plate, an antiglare layer, an antireflection film, a protective plate, a prism array, a lens array sheet, a light diffusing plate, a backlight, etc.
  • a diffusing plate for example, a diffusing plate, an antiglare layer, an antireflection film, a protective plate, a prism array, a lens array sheet, a light diffusing plate, a backlight, etc.
  • a protective plate such as a prism array, a lens array sheet, a light diffusing plate, a backlight, etc.
  • a prism array such as a prism array, a lens array sheet, a light diffusing plate, a backlight, etc.
  • IPA copolymerized PET amorphous isophthalic acid copolymerized polyethylene terephthalate (IPA copolymerized PET) film (thickness: 100 ⁇ m) having a water absorption of 0.75% and Tg of 75 ° C. is subjected to corona treatment.
  • Alcohol polymerization degree 4200, saponification degree 99.2 mol%) and acetoacetyl-modified PVA (polymerization degree 1200, acetoacetyl modification degree 4.6%, saponification degree 99.0 mol% or more, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
  • aqueous solution containing 9: 1 ratio of the trade name “Gosefimer Z200”) was applied and dried at 25 ° C. to form a PVA-based resin layer having a thickness of 11 ⁇ m, thereby preparing a laminate.
  • the obtained laminate was uniaxially stretched in the longitudinal direction (longitudinal direction) 2.0 times between rolls having different peripheral speeds in an oven at 120 ° C. (air-assisted stretching process).
  • the laminate was immersed in an insolubilization bath (a boric acid aqueous solution obtained by blending 4 parts by weight of boric acid with respect to 100 parts by weight of water) for 30 seconds (insolubilization treatment).
  • boric acid aqueous solution obtained by blending 3 parts by weight of potassium iodide and 3 parts by weight of boric acid with respect to 100 parts by weight of water.
  • Crosslinking treatment Thereafter, the laminate was immersed in a boric acid aqueous solution (an aqueous solution obtained by blending 4 parts by weight of boric acid and 5 parts by weight of potassium iodide with respect to 100 parts by weight of water) at a liquid temperature of 70 ° C.
  • uniaxial stretching was performed between rolls having different peripheral speeds in the longitudinal direction (longitudinal direction) so that the total stretching ratio was 5.5 times (in-water stretching treatment).
  • the laminate was immersed in a cleaning bath (an aqueous solution obtained by blending 4 parts by weight of potassium iodide with respect to 100 parts by weight of water) at a liquid temperature of 30 ° C. (cleaning treatment).
  • a cleaning bath an aqueous solution obtained by blending 4 parts by weight of potassium iodide with respect to 100 parts by weight of water
  • cleaning treatment a liquid temperature of 30 ° C.
  • (Protective film) Acrylic A (meth) acrylic resin film having a lactone ring structure with a thickness of 40 ⁇ m was subjected to corona treatment on the easy adhesion treated surface.
  • TAC manufactured by Fuji Film Co., Ltd., product name “TJ40”, and a 40 ⁇ m thick triacetyl cellulose resin film was used.
  • COP manufactured by Nippon Zeon Co., Ltd., product name “ZEONOR FILM”, 25 ⁇ m thick cycloolefin resin film was used.
  • the surface of the polarizer of the optical film laminate is coated with the protective film (acrylic) while applying the UV-curable adhesive so that the thickness of the adhesive layer after curing is 1 ⁇ m.
  • the protective film acrylic
  • UV-curable adhesive As energy rays, ultraviolet rays were irradiated to cure the adhesive. Ultraviolet irradiation is performed using a gallium-encapsulated metal halide lamp, an irradiation device: Fusion UV Systems, Inc.
  • Forming material A Dioctyltin dilaurate catalyst (trade name, manufactured by Tokyo Fine Chemical Co., Ltd.) in 100 parts of a 75% ethyl acetate solution of urethane prepolymer composed of tolylene diisocyanate and trimethylolpropane (trade name “Coronate L” manufactured by Tosoh Corporation) 0.1 parts of “Enabilizer OL-1” was added, and a urethane prepolymer coating solution was prepared with methyl isobutyl ketone as a solvent at a solid content concentration of 10%.
  • Forming material B The same catalyst and solvent as the forming agent A were used except that a 75% ethyl acetate solution of urethane prepolymer composed of diphenylmethane diisocyanate and trimethylolpropane (trade name “Coronate 2067” manufactured by Tosoh Corporation) was used. Thus, a coating solution was prepared.
  • Forming material C The same catalyst and solvent as the forming agent A except that a 75% ethyl acetate solution of urethane prepolymer composed of hexamethylene diisocyanate and trimethylolpropane (trade name “Coronate HL” manufactured by Tosoh Corporation) was used. A coating solution was prepared using this.
  • Forming material D 80 parts of urethane acrylate resin (manufactured by Nippon Gosei Co., Ltd., product name “purple light UV-1700”), hydroxyethyl acrylamide (manufactured by Kojin Co., Ltd., product name “HEAA”) and photopolymerization initiator (Ciba Japan)
  • the product name "Irgacure 907” was added, and a urethane acrylate coating solution was prepared with methyl isobutyl ketone as a solvent to a solid content concentration of 10%.
  • Acrylic A (meth) acrylic resin film having a lactone ring structure with a thickness of 40 ⁇ m was subjected to corona treatment on the easy adhesion treated surface.
  • TAC manufactured by Konica Minolta Co., Ltd., product name “KC4UY”, 40 ⁇ m thick triacetyl cellulose resin film was used.
  • Acrylic Since there was no increase in the amount of detected ions of 0.5 ⁇ g / g or more after standing, the eluate was judged as “none”.
  • TAC The amount of acetate ion detected after standing was increased from the initial (2.5 ⁇ g / g) to 3.5 ⁇ g / g. Since the detected ion amount was 0.5 ⁇ g / g or more, the eluate was determined to be “present”.
  • the sample was 85% R.D. H.
  • the mixture was left for 300 hours under the humidified heat condition.
  • the saturated moisture content of the adhesive layer was measured about the adhesive layer before and behind standing.
  • the resin film is a resin film in which an elution component can be generated when the saturated moisture content of the pressure-sensitive adhesive layer after being left is increased by 0.1% or more than the saturated moisture content of the pressure-sensitive adhesive layer before being left to stand. confirmed.
  • the initial saturated moisture content of the pressure-sensitive adhesive was 1.0%.
  • the saturated moisture content after standing was 1.0% when an acrylic resin film was used as the resin film, and 1.2% when a TAC film was used.
  • Acrylic Since there was no change in moisture content after standing, the eluate was judged as “none”.
  • TAC Since the water content change after standing was 0.2%, the eluate was judged to be “present”.
  • ⁇ Measurement of saturated moisture content About 50 mg of a sample was collected from the pressure-sensitive adhesive layer of the polarizing film with the pressure-sensitive adhesive layer produced in Examples and Comparative Examples. The sample was subjected to R.D. at 85 ° C. and 0% using a moisture adsorption / desorption measuring device (IGA-Sorp, manufactured by Hiden). H. The weight (W1) in a state in which moisture was completely removed by standing until there was no change in weight was measured. H. The weight change was observed. When there was no change in the weight of the sample (saturated state), its weight (W2) was measured. The saturated moisture content was measured from the following formula.
  • cross-linking agent 100 parts by weight of the solid content of the acrylic polymer solution is a cross-linking agent mainly composed of a compound having an isocyanate group of 0.5 part (trade name “Coronate L” manufactured by Nippon Polyurethane Co., Ltd.). And 0.075 parts of ⁇ -glycidoxypropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name “KMB-403”) as a silane coupling agent in this order, was prepared.
  • the pressure-sensitive adhesive solution was applied to the surface of a release sheet (separator) made of a peeled polyethylene terephthalate film (thickness 38 ⁇ m) so that the thickness after drying was 20 ⁇ m and dried to form a pressure-sensitive adhesive layer. Formed.
  • Example 1 Preparation of a single protective polarizing film with a transparent block layer>
  • the transparent block layer forming material A to the polarizer surface (the polarizer surface on which the protective film is not provided) of the piece protective polarizing film with a bar coater, followed by heat treatment at 60 ° C. for 12 hours.
  • a urethane resin layer having a thickness of 1 ⁇ m was formed.
  • Example 2 ⁇ Preparation of resin film with transparent block layer>
  • the transparent block layer forming material A was applied to the resin film (TAC) with a bar coater, and then heat treated at 60 ° C. for 12 hours to form a urethane resin layer having a thickness of 1 ⁇ m.
  • the pressure-sensitive adhesive layer formed on the release treatment surface of the release sheet is bonded to the surface of the polarizer of the piece protective polarizing film (the surface of the polarizer on which the protective film is not provided).
  • a polarizing film with a layer was produced.
  • the transparent block layer (urethane resin layer) side of the resin film with the transparent block layer was bonded to the pressure-sensitive adhesive layer.
  • Example 3 Preparation of polarizing film with resin film> While applying the UV curable adhesive to the transparent block layer of the single protective polarizing film with a transparent block layer prepared in the same manner as in Example 1 so that the thickness of the adhesive layer after curing is 1 ⁇ m, After laminating the resin film (TAC), the adhesive was cured by irradiating ultraviolet rays as active energy rays. Ultraviolet irradiation is performed using a gallium-encapsulated metal halide lamp, an irradiation device: Fusion UV Systems, Inc.
  • Example 1 a piece with a transparent block layer was prepared in the same manner as in Example 1 except that the type of protective film, the forming material of the transparent block layer, the thickness, and the type of resin film were changed as shown in Table 1. A protective polarizing film and a polarizing film with a resin film were produced. In addition, formation of the transparent block layer of the comparative example 2 applies the said forming agent D to the surface of the polarizer of the said piece protection polarizing film (polarizer surface in which the protective film is not provided) with a bar coater, then 60 Heated at 0 ° C. for 1 minute.
  • the coating layer was irradiated with ultraviolet rays having an integrated light quantity of 300 mJ / cm 2 with a high-pressure mercury lamp to form a urethane acrylate resin layer having a thickness of 1 ⁇ m.
  • no transparent block layer was formed.
  • the single transmittance T and polarization degree P of the obtained piece-protecting polarizing film were measured using a spectral transmittance measuring device with an integrating sphere (Dot-3c, Murakami Color Research Laboratory).
  • the degree of polarization P is the transmittance when two identical polarizing films are overlapped so that their transmission axes are parallel (parallel transmittance: Tp), and overlapped so that their transmission axes are orthogonal to each other. It is calculated
  • Polarization degree P (%) ⁇ (Tp ⁇ Tc) / (Tp + Tc) ⁇ 1/2 ⁇ 100
  • Each transmittance is represented by a Y value obtained by correcting visibility with a two-degree field of view (C light source) of JIS Z8701, with 100% of the completely polarized light obtained through the Granteller prism polarizer.
  • P Polarizer 1 Transparent block layer 2 Resin film 3 Adhesive layer or adhesive layer 4 Protective film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
PCT/JP2018/019672 2017-06-02 2018-05-22 偏光フィルムおよび画像表示装置 Ceased WO2018221324A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880036594.8A CN110692001B (zh) 2017-06-02 2018-05-22 偏振膜及图像显示装置
KR1020197033736A KR102575477B1 (ko) 2017-06-02 2018-05-22 편광 필름 및 화상 표시 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017110102A JP6653292B2 (ja) 2017-06-02 2017-06-02 偏光フィルムおよび画像表示装置
JP2017-110102 2017-06-02

Publications (1)

Publication Number Publication Date
WO2018221324A1 true WO2018221324A1 (ja) 2018-12-06

Family

ID=64454659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/019672 Ceased WO2018221324A1 (ja) 2017-06-02 2018-05-22 偏光フィルムおよび画像表示装置

Country Status (5)

Country Link
JP (1) JP6653292B2 (https=)
KR (1) KR102575477B1 (https=)
CN (1) CN110692001B (https=)
TW (1) TWI721275B (https=)
WO (1) WO2018221324A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129332A1 (ja) * 2018-12-17 2020-06-25 日東電工株式会社 ベゼル付き画像表示パネル、および画像表示装置
JP2020098320A (ja) * 2018-12-17 2020-06-25 日東電工株式会社 ベゼル付き画像表示パネル、画像表示装置および粘着剤層付き光学フィルム
WO2020129331A1 (ja) * 2018-12-17 2020-06-25 日東電工株式会社 粘着剤層付き光学フィルム、画像表示パネルおよび画像表示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07120617A (ja) * 1993-10-21 1995-05-12 Nippon Synthetic Chem Ind Co Ltd:The 偏光板
US20060187548A1 (en) * 2005-02-23 2006-08-24 Eastman Kodak Company Polarizing layer with adherent protective layer
JP2007025609A (ja) * 2005-07-21 2007-02-01 Mgc Filsheet Co Ltd 偏光調光特性を有する光制御プラスチックレンズおよびその製造方法
JP2008105225A (ja) * 2006-10-24 2008-05-08 Mgc Filsheet Co Ltd 防眩性積層体、塗膜防眩性積層体、防眩性材料、及び該防眩性材料の製造方法
WO2015182351A1 (ja) * 2014-05-30 2015-12-03 住友化学株式会社 粘着剤付き偏光板及び液晶表示装置
WO2017135059A1 (ja) * 2016-02-05 2017-08-10 富士フイルム株式会社 積層体および液晶表示装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3678889B2 (ja) 1997-07-11 2005-08-03 日本合成化学工業株式会社 偏光板の製造方法
JP3315914B2 (ja) 1997-12-18 2002-08-19 日本合成化学工業株式会社 偏光フィルムおよびそれを用いた偏光板
JP3991672B2 (ja) * 2001-12-13 2007-10-17 株式会社デンソー Ｅｌ表示装置
JP5817141B2 (ja) * 2010-09-30 2015-11-18 住友化学株式会社 液晶表示装置
JP2015114352A (ja) * 2013-12-09 2015-06-22 株式会社ジャパンディスプレイ 液晶表示装置
JP6077619B2 (ja) * 2014-09-30 2017-02-08 日東電工株式会社 片保護偏光フィルム、粘着剤層付偏光フィルム、画像表示装置およびその連続製造方法
JP6600618B2 (ja) * 2016-02-05 2019-10-30 富士フイルム株式会社 積層体および液晶表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07120617A (ja) * 1993-10-21 1995-05-12 Nippon Synthetic Chem Ind Co Ltd:The 偏光板
US20060187548A1 (en) * 2005-02-23 2006-08-24 Eastman Kodak Company Polarizing layer with adherent protective layer
JP2007025609A (ja) * 2005-07-21 2007-02-01 Mgc Filsheet Co Ltd 偏光調光特性を有する光制御プラスチックレンズおよびその製造方法
JP2008105225A (ja) * 2006-10-24 2008-05-08 Mgc Filsheet Co Ltd 防眩性積層体、塗膜防眩性積層体、防眩性材料、及び該防眩性材料の製造方法
WO2015182351A1 (ja) * 2014-05-30 2015-12-03 住友化学株式会社 粘着剤付き偏光板及び液晶表示装置
WO2017135059A1 (ja) * 2016-02-05 2017-08-10 富士フイルム株式会社 積層体および液晶表示装置

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129332A1 (ja) * 2018-12-17 2020-06-25 日東電工株式会社 ベゼル付き画像表示パネル、および画像表示装置
JP2020098320A (ja) * 2018-12-17 2020-06-25 日東電工株式会社 ベゼル付き画像表示パネル、画像表示装置および粘着剤層付き光学フィルム
JP2020098321A (ja) * 2018-12-17 2020-06-25 日東電工株式会社 粘着剤層付き光学フィルム、画像表示パネルおよび画像表示装置
WO2020129331A1 (ja) * 2018-12-17 2020-06-25 日東電工株式会社 粘着剤層付き光学フィルム、画像表示パネルおよび画像表示装置
CN113168789A (zh) * 2018-12-17 2021-07-23 日东电工株式会社 带粘合剂层的光学膜、图像显示面板及图像显示装置
CN113196365A (zh) * 2018-12-17 2021-07-30 日东电工株式会社 带边框的图像显示面板、以及图像显示装置
US20220057847A1 (en) * 2018-12-17 2022-02-24 Nitto Denko Corporation Image display panel with bezel, and image display device
CN113168789B (zh) * 2018-12-17 2023-07-21 日东电工株式会社 带粘合剂层的光学膜、图像显示面板及图像显示装置
JP7343316B2 (ja) 2018-12-17 2023-09-12 日東電工株式会社 ベゼル付き画像表示パネル、画像表示装置および粘着剤層付き光学フィルム
JP7440993B2 (ja) 2018-12-17 2024-02-29 日東電工株式会社 粘着剤層付き光学フィルム、画像表示パネルおよび画像表示装置
TWI838402B (zh) * 2018-12-17 2024-04-11 日商日東電工股份有限公司 附黏著劑層之光學薄膜、影像顯示面板及影像顯示裝置
TWI840412B (zh) * 2018-12-17 2024-05-01 日商日東電工股份有限公司 附邊框之影像顯示面板及影像顯示裝置

Also Published As

Publication number Publication date
CN110692001A (zh) 2020-01-14
JP6653292B2 (ja) 2020-02-26
CN110692001B (zh) 2023-02-28
KR20200007827A (ko) 2020-01-22
KR102575477B1 (ko) 2023-09-07
TW201903434A (zh) 2019-01-16
TWI721275B (zh) 2021-03-11
JP2018205491A (ja) 2018-12-27

Similar Documents

Publication Publication Date Title
CN106796318B (zh) 偏振膜、带粘合剂层的偏振膜及图像显示装置
KR20170115542A (ko) 편광 필름, 점착제층 부착 편광 필름 및 화상 표시 장치 및 그 연속 제조 방법
CN110730717A (zh) 光学膜、剥离方法及光学显示面板的制造方法
WO2017170537A1 (ja) 光学フィルム、剥離方法及び光学表示パネルの製造方法
KR102575467B1 (ko) 광학 적층체, 편광 필름 및 화상 표시 장치
KR102575477B1 (ko) 편광 필름 및 화상 표시 장치
CN113165365B (zh) 偏振膜、其制造方法及图像显示装置
TWI671556B (zh) 偏光薄膜及影像顯示裝置
WO2021166659A1 (ja) 粘着剤層付き偏光フィルム、および画像表示装置
CN107924016B (zh) 单侧保护偏振膜、带粘合剂层的偏振膜及图像显示装置
JP6657142B2 (ja) 偏光フィルムおよび画像表示装置
WO2016129584A1 (ja) 偏光フィルム、粘着剤層付偏光フィルム並びに画像表示装置およびその連続製造方法
WO2016052540A1 (ja) 偏光フィルム、粘着剤層付偏光フィルムおよび画像表示装置
KR20230076853A (ko) 편광판 및 화상 표시 장치
KR20180123099A (ko) 표면 보호 필름 부착 편광 필름 및 편광 필름의 제조 방법

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: 18810253

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20197033736

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18810253

Country of ref document: EP

Kind code of ref document: A1