WO2019131684A1 - 偏光板用積層体、偏光板、表示装置、及び偏光板の製造方法 - Google Patents

偏光板用積層体、偏光板、表示装置、及び偏光板の製造方法 Download PDF

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Publication number
WO2019131684A1
WO2019131684A1 PCT/JP2018/047680 JP2018047680W WO2019131684A1 WO 2019131684 A1 WO2019131684 A1 WO 2019131684A1 JP 2018047680 W JP2018047680 W JP 2018047680W WO 2019131684 A1 WO2019131684 A1 WO 2019131684A1
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Prior art keywords
polarizing plate
film
laminate
resin
base film
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PCT/JP2018/047680
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English (en)
French (fr)
Japanese (ja)
Inventor
啓 眞島
貴道 猪股
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日本ゼオン株式会社
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Priority to KR1020207017299A priority Critical patent/KR20200104297A/ko
Priority to CN201880081323.4A priority patent/CN111480101B/zh
Priority to JP2019562056A priority patent/JP7294142B2/ja
Publication of WO2019131684A1 publication Critical patent/WO2019131684A1/ja

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • 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
    • 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
    • G02F1/133528—Polarisers
    • 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
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements

Definitions

  • the present invention relates to a laminate for polarizing plate, a polarizing plate, a display device, and a method of manufacturing the polarizing plate.
  • a polarizing plate provided with a polarizer and a protective film for protecting the polarizer is generally used.
  • thinner polarizing plates are also required.
  • the polarizer may shrink in the use environment of the display device, warpage due to such shrinkage may be a problem in a thin display device having a large area. Therefore, by employing a thin polarizer having a thickness of 10 ⁇ m or less, in addition to the reduction of the thickness of the display device due to the reduction of the thickness of the polarizer itself, the reduction of the occurrence of the warpage as described above can be expected.
  • Patent No. 4691205 Corresponding Gazette: US Patent No. 8314987
  • phase difference may generate
  • a protective film for protecting the polarizing plate may be separately prepared and may be attached to the polarizing plate.
  • the present invention can also use a substrate film as a protective film, and a laminate for a polarizing plate that can be efficiently produced even if the thickness is thin, a polarizing plate and a display device provided with the laminate, And it aims at providing the manufacturing method of the above-mentioned polarizing plate.
  • the inventor of the present invention found that a polyvinyl alcohol resin film having an in-plane retardation and thickness within a predetermined range and a flexible resin capable of drawing at high magnification at low temperature.
  • the present invention has been found out that the above-mentioned problems can be solved by using a substrate film comprising Therefore, according to the present invention, the following [1] to [15] are provided.
  • a laminate for a polarizing plate comprising an unstretched polyvinyl alcohol resin film and a substrate film,
  • the polyvinyl alcohol resin film has a retardation Re1 in the in-plane direction of 50 nm or less, and a thickness T of 45 ⁇ m or less
  • the base film is a film made of resin
  • the resin has a melt flow rate of 1 g / 10 min or more, and the melt flow rate is a value measured at 190 ° C. under a load of 2.16 kg.
  • the resin has a tensile elastic modulus E of 50 MPa or more and 1200 MPa or less,
  • the retardation Re2 in the in-plane direction of the stretched product of the base film is 0 nm or more and 20 nm or less, and the retardation Re2 is 6.0 times the temperature condition of 50 ° C. to 120 ° C. of the laminate for polarizing plate
  • the laminated body for polarizing plates which is a phase difference which the said extending
  • the resin is a cycloolefin resin
  • the cycloolefin resin contains a cycloolefin polymer
  • Polymer block [C] which is a main component
  • Block copolymer [D] consisting of The laminated body for polarizing plates as described in [1] which is a hydrogenated block copolymer hydride.
  • a laminate for a polarizing plate comprising an unstretched polyvinyl alcohol resin film and a base film
  • the polyvinyl alcohol resin film has a retardation Re1 in the in-plane direction of 50 nm or less, and a thickness T of 45 ⁇ m or less
  • the base film is a film made of a resin
  • the resin is a cycloolefin resin
  • the cycloolefin resin contains a cycloolefin polymer
  • Polymer block [C] which is a main component
  • the laminated body for polarizing plates which is a phase difference which the said extending
  • the plasticizer, the softener, or both of them are one or more selected from ester plasticizers and aliphatic hydrocarbon polymers.
  • the protective film is made of one or more resins selected from cycloolefin resin, acrylic resin, polyethylene terephthalate resin, and triacetyl cellulose resin.
  • Two substrates, and a liquid crystal layer located therebetween A display device comprising: the polarizing plate according to any one of [8] to [10], which is disposed outside of at least one of the two substrates.
  • Two substrates, and a light emitting layer located therebetween A display device comprising: the polarizing plate according to any one of [8] to [10], which is disposed outside of one of the two substrates.
  • a substrate film can be used as a protective film, and a laminate for a polarizing plate which can be efficiently produced even if the thickness is thin, a polarizing plate and a display device using the laminate, And the manufacturing method of the polarizing plate using the said laminated body can be provided.
  • FIG. 1 is a cross-sectional view schematically showing a laminate for a polarizing plate according to Embodiment 1 of the present invention.
  • FIG. 2 is the figure which showed typically an example of the manufacturing apparatus of the laminated body for polarizing plates which concerns on Embodiment 1.
  • FIG. 3 is a cross-sectional view schematically showing a polarizing plate manufactured using the laminate for a polarizing plate according to Embodiment 1 of the present invention.
  • FIG. 4 is the figure which showed typically an example of the manufacturing apparatus which manufactures a polarizing plate using the laminated body for polarizing plates which concerns on Embodiment 1.
  • FIG. 5 is sectional drawing which showed typically the polarizing plate of the modification 1 manufactured using the laminated body for polarizing plates which concerns on Embodiment 1 of this invention.
  • FIG. 6 is a cross-sectional view schematically showing a polarizing plate of Modification Example 2 manufactured using the laminate for a polarizing plate according to Embodiment 1 of the present invention.
  • FIG. 7 is a cross-sectional view schematically showing a laminate for a polarizing plate according to Embodiment 2 of the present invention.
  • FIG. 8 is a cross-sectional view schematically showing a polarizing plate manufactured using the laminate for a polarizing plate according to Embodiment 2 of the present invention.
  • FIG. 6 is a cross-sectional view schematically showing a polarizing plate of Modification Example 2 manufactured using the laminate for a polarizing plate according to Embodiment 1 of the present invention.
  • FIG. 7 is a cross-sectional view schematically showing a laminate for a polarizing plate according to Em
  • FIG. 9 is a cross-sectional view schematically showing a polarizing plate of Modification 3 manufactured using the laminate for a polarizing plate according to Embodiment 2 of the present invention.
  • FIG. 10 is a cross-sectional view schematically showing a polarizing plate of Modification Example 4 manufactured using the laminate for a polarizing plate according to Embodiment 2 of the present invention.
  • FIG. 11 is a cross-sectional view schematically showing a display device according to Embodiment 3 of the present invention.
  • FIG. 12 is a cross-sectional view schematically showing a display device according to Embodiment 4 of the present invention.
  • FIG. 13 is a cross-sectional view schematically showing a display device according to Embodiment 5 of the present invention.
  • FIG. 14 is a cross-sectional view schematically showing a display device according to Embodiment 6 of the present invention.
  • FIG. 15 is a cross-sectional view schematically showing a display device according to Embodiment 7 of the present invention.
  • FIG. 16 is a cross-sectional view schematically showing a display device according to Embodiment 8 of the present invention.
  • a "long film” refers to a film having a length of 5 times or more, preferably 10 times or more of the width of the film, and specifically, It has a length that can be rolled up and stored or transported.
  • the upper limit of the ratio of the length to the width of the film is not particularly limited, and may be, for example, 100,000 times or less.
  • the Nz coefficient of the film is a value represented by [(nx-nz) / (nx-ny)] and can also be represented as [(Rth / Re) +0.5].
  • nx is the refractive index in the slow axis direction in the plane of the film (maximum refractive index in the plane)
  • ny is the refractive index in the in-plane direction perpendicular to the slow axis in the plane of the film
  • nz is the refractive index in the thickness direction of the film
  • d is the thickness (nm) of the film.
  • the measurement wavelength is 550 nm, which is a typical wavelength in the visible light range.
  • FIG. 1 is an example of sectional drawing which shows typically the laminated body 10 of Embodiment 1 which concerns on this invention. As shown in FIG.
  • the laminate 10 of the present embodiment includes an unstretched polyvinyl alcohol resin film 11 and a base film 12 provided on the polyvinyl alcohol resin film 11.
  • reference numeral 13 denotes an adhesive for bonding the polyvinyl alcohol resin film 11 and the base film 12.
  • the laminate 10 of the present invention is a material for producing a polarizer (polarizing plate).
  • the polyvinyl alcohol resin film is a film having a retardation Re1 in the in-plane direction of 50 nm or less and a thickness T of 45 ⁇ m or less.
  • a polyvinyl alcohol resin film is an unstretched film which consists of polyvinyl alcohol resin (Hereinafter, "polyvinyl alcohol” may be abbreviated as "PVA”.).
  • PVA polyvinyl alcohol
  • the "unstretched film” refers to a film which has not been subjected to a stretching treatment.
  • a PVA resin film (polyvinyl alcohol resin film) is not necessarily limited, but from the viewpoint of availability etc., one produced by saponifying polyvinyl acetate obtained by polymerizing vinyl acetate is used Is preferred.
  • the PVA contained in the PVA resin preferably has a degree of polymerization in the range of 500 to 8000, and a degree of saponification of 90% by mol or more from the viewpoint that the stretchability and the polarization performance of the obtained polarizer are excellent. preferable.
  • the degree of polymerization is an average degree of polymerization measured in accordance with the description of JIS K 6726-1994
  • the degree of saponification is a value measured in accordance with the description of JIS K 6726-1994.
  • a more preferable range of the polymerization degree is 1000 to 6000, and more preferably 1500 to 4000.
  • a more preferable range of the degree of saponification is 95 mol% or more, more preferably 99 mol% or more.
  • the PVA may be a copolymer of vinyl acetate and another monomer copolymerizable, or a graft polymer.
  • the method of producing the PVA resin film is not particularly limited, and the PVA resin film can be produced by any method such as a known method.
  • a cast film forming method a wet film forming method (ejection in a poor solvent), a dry / wet film forming method, a gel film forming method using a PVA solution in which PVA is dissolved in a solvent as a film forming solution
  • a method a method in which an aqueous solution of PVA is once cooled and gelled, a solvent is extracted and removed to obtain a PVA resin film
  • a method by a combination thereof can be mentioned.
  • the melt extrusion film forming method which performs what melt
  • the casting film forming method and the melt extrusion film forming method are preferable because a resin film of PVA having high transparency and little coloring is obtained, and the melt extrusion film forming method is more preferable.
  • the PVA resin film contains a plasticizer such as polyhydric alcohol such as glycerin in an amount of 0.01 to 30% with respect to PVA in order to improve mechanical physical properties and process passability during secondary processing. % Is preferable, and 0.01 to 1% by weight of a surfactant such as an anionic surfactant or a nonionic surfactant is contained with respect to PVA in order to improve handleability, film appearance and the like. Is preferred.
  • the PVA resin film is, if necessary, an antioxidant, an ultraviolet light absorber, a lubricant, a pH adjuster, inorganic fine particles, a coloring agent, an antiseptic, an antifungal agent, other high molecular compounds other than the above components, moisture, etc. And may further contain an optional component of The PVA resin film can contain one or more of the above-mentioned optional components.
  • the thickness T of the PVA resin film is 45 ⁇ m or less, preferably 35 ⁇ m or less, more preferably 25 ⁇ m or less, still more preferably 20 ⁇ m or less, preferably 5 ⁇ m or more, more preferably 10 ⁇ m or more, still more preferably 15 ⁇ m or more .
  • the thickness of the PVA resin film is less than or equal to the upper limit of the range, the contraction force of the polarizing plate can be effectively reduced, and when it is greater than or equal to the lower limit of the range, the polarizing plate having sufficiently high polarization performance You can get
  • the retardation Re1 in the in-plane direction of the PVA resin film is 50 nm or less, preferably 40 nm or less, more preferably 30 nm or less, still more preferably 20 nm or less, preferably 0 nm or more, more preferably 3 nm or more.
  • the retardation Re1 in the in-plane direction of the PVA resin film is not more than the upper limit value of the above range, the laminate can be stretched at a sufficient magnification, and a polarizing plate with high polarization performance can be obtained.
  • the shape and dimensions of the PVA resin film can be appropriately adjusted according to the desired application. It is preferable that a PVA resin film is a long film in the efficiency of manufacture.
  • a base film is a layer different from a PVA resin film, and is a film which consists of resin.
  • the resin forming the base film is a resin having flexibility capable of drawing at a high draw ratio (for example, 6.0 times) at a low temperature (for example, 50 to 120 ° C.).
  • the resin forming the base film is a resin (resin A) having a melt flow rate of 1 g / 10 min or more and a tensile elastic modulus E of 50 MPa or more and 1200 MPa or less, or a predetermined cyclo It is a cycloolefin resin (resin B) containing an olefin polymer.
  • the melt flow rate of the resin A forming the base film is 1 g / 10 min or more, preferably 3 g / 10 min or more, more preferably 5 g / 10 min or more, preferably 300 g / 10 min or less And more preferably 100 g / 10 minutes or less.
  • the melt flow rate referred to here is a value measured at 190 ° C. and a load of 2.16 kg.
  • “melt flow rate measured at 190 ° C. and a load of 2.16 kg” is also simply referred to as “MFR”.
  • the MFR of the resin A can be measured under the conditions of a temperature of 190 ° C. and a load of 2.16 kg using a melt indexer based on JIS-K-7210.
  • the tensile modulus E of the resin A forming the base film is 50 MPa or more, preferably 100 MPa or more, more preferably 200 MPa or more, and 1200 MPa or less, preferably 1000 MPa or less, more preferably 800 MPa or less .
  • the tensile elastic modulus E of the resin A is equal to or lower than the lower limit value, when the laminate is stretched to form a polarizing plate, the retardation of the substrate film is reduced and the laminate is stretched by not more than the upper limit. It is possible to prevent the occurrence of breakage of the base film when carrying out.
  • the resin A forming the substrate film is not particularly limited as long as it is a resin having MFR of 1 g / 10 min or more and a tensile elastic modulus E of 50 MPa or more and 1200 MPa or less.
  • the cycloolefin resin containing a cycloolefin polymer is preferable from the point which is excellent in the property and water vapor barrier property.
  • polymer block [A] which has repeating unit [I] derived from an aromatic vinyl compound as a main component, repeating unit [I] derived from an aromatic vinyl compound, and chain
  • the block copolymer hydride in which the unit [D] is hydrogenated is preferable.
  • a block copolymer hydride WO 2000/32646, WO 2001/081957, JP 2002-105151, JP 2006-195242, JP 2011-13378, WO 2015/002020 And the like.
  • the resin B forming the base film is a cycloolefin resin including a cycloolefin polymer.
  • the cycloolefin polymer contained in the resin B is a polymer block [A] mainly composed of a repeating unit [I] derived from an aromatic vinyl compound, and a repeating unit [I] derived from an aromatic vinyl compound and a chain form
  • the block copolymer [D] is a hydrogenated block copolymer hydride.
  • a block copolymer hydride the same one as the above-mentioned block copolymer hydride which is suitably used as the resin A can be used.
  • the resin B forming the base film may be a resin having an MFR of 1 g / 10 min or more and a tensile elastic modulus E of 50 MPa or more and 1200 MPa or less.
  • the resin (the resin A and the resin B) forming the base film preferably contains a plasticizer and / or a softener (either one or both of the plasticizer and the softener).
  • a plasticizer and / or a softener either one or both of the plasticizer and the softener.
  • plasticizer and the softener those which can be uniformly dissolved or dispersed in the resin forming the base film can be used.
  • specific examples of the plasticizer and the softener include an ester-based plasticizer composed of a polyhydric alcohol and a monovalent carboxylic acid (hereinafter referred to as "polyhydric alcohol ester-based plasticizer"), and a polyvalent carboxylic acid and a monovalent Ester-based plasticizers such as ester-based plasticizers (hereinafter referred to as "polyvalent carboxylic acid ester-based plasticizers") consisting of alcohols, and phosphoric acid ester-based plasticizers, carbohydrate ester-based plasticizers, and other polymer softeners Can be mentioned.
  • Ethylene glycol glycerol, and trimethylol propane are preferable.
  • polyhydric alcohol ester-based plasticizers examples include ethylene glycol ester-based plasticizers, glycerin ester-based plasticizers, and other polyhydric alcohol ester-based plasticizers.
  • polyvalent carboxylic acid ester-based plasticizers examples include dicarboxylic acid ester-based plasticizers and other polyvalent carboxylic acid ester-based plasticizers.
  • phosphoric acid ester plasticizers include phosphoric acid alkyl esters such as triacetyl phosphate and tributyl phosphate; phosphoric acid cycloalkyl esters such as tricyclophenyl phosphate and cyclohexyl phosphate; triphenyl phosphate and tricresyl phosphate And phosphoric acid aryl esters.
  • carbohydrate ester plasticizers include glucose pentaacetate, glucose pentapropionate, glucose pentabutyrate, sucrose octaacetate, sucrose octabenzoate and the like, among which sucrose octaacetate is more preferred. preferable.
  • polymer softener examples include aliphatic hydrocarbon polymers, alicyclic hydrocarbon polymers, polyethyl acrylate, polymethyl methacrylate, methyl methacrylate and 2-hydroxyethyl methacrylate.
  • Acrylic polymers such as copolymers, copolymers of methyl methacrylate, methyl acrylate and 2-hydroxyethyl methacrylate; vinyl polymers such as polyvinyl isobutyl ether, poly N-vinyl pyrrolidone; polystyrene, poly 4 -Styrene polymers such as hydroxystyrene; polyesters such as polybutylene succinate, polyethylene terephthalate and polyethylene naphthalate; polyethers such as polyethylene oxide and polypropylene oxide; polyamides, polyurethanes, polyureas and the like.
  • aliphatic hydrocarbon polymers include low molecular weight polymers such as polyisobutylene, polybutene, poly-4-methylpentene, poly-1-octene, ethylene / ⁇ -olefin copolymer, and their hydrides; polyisoprene And low molecular weight products such as polyisoprene-butadiene copolymer and the hydrides thereof.
  • the aliphatic hydrocarbon-based polymer preferably has a number average molecular weight of 300 to 5,000, from the viewpoint of easy dissolution or dispersion in the cycloolefin resin uniformly.
  • polymer softeners may be homopolymers consisting of one type of repeating unit or copolymers having a plurality of repeating structures. In addition, two or more of the above polymers may be used in combination.
  • the plasticizer and / or the softener it is one or more selected from ester-based plasticizers and aliphatic hydrocarbon polymers because they are particularly excellent in compatibility with the resin forming the base film. Is preferred.
  • the proportion of the plasticizer and / or the softener (hereinafter also referred to as “plasticizer etc.”) in the base film is preferably 0.2 parts by weight or more, more preferably 100 parts by weight of the resin forming the base film. Is 0.5 parts by weight or more, still more preferably 1.0 part by weight or more, and preferably 50 parts by weight or less, more preferably 40 parts by weight or less.
  • the substrate film preferably contains an organometallic compound.
  • an organometallic compound By containing the organic metal compound, it is possible to more effectively suppress the occurrence of peeling of the base film when the laminate is stretched at a high draw ratio (for example, wet drawing at a draw ratio of 6.0).
  • the organometallic compound is a compound including at least one of a chemical bond of metal and carbon and a chemical bond of metal and oxygen, and is a metal compound having an organic group.
  • the organic metal compound include organic silicon compounds, organic titanium compounds, organic aluminum compounds and organic zirconium compounds.
  • organosilicon compounds, organotitanium compounds and organozirconium compounds are preferable, and organosilicon compounds are more preferable because they are excellent in reactivity with polyvinyl alcohol.
  • the organometallic compounds may be used alone or in combination of two or more.
  • R 1 and R 2 each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 10 carbon atoms, an epoxy group, an amino group, a thiol group, an isocyanate group, or carbon
  • R 1 examples include an epoxy group, an amino group, a thiol group, an isocyanate group, a vinyl group, an aryl group, an acrylic group, an alkyl group having 1 to 8 carbon atoms, and —CH 2 OC n H 2n + 1 (n represents an integer of 1 to 4) and the like.
  • R 2 include a hydrogen atom, a vinyl group, an aryl group, an acryl group, an alkyl group having 1 to 8 carbon atoms, -CH 2 OC n H 2n + 1 (n is 1 Represents an integer of to 4.) and the like.
  • organosilicon compounds include epoxy-based organosilicon compounds such as 3-glycidoxypropyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-aminopropyltrimethoxysilane, N- Amino organosilicon compounds such as 2- (aminoethyl) -3-aminopropyltrimethoxysilane, isocyanurate organosilicon compounds such as tris- (trimethoxysilylpropyl) isocyanurate, 3-mercaptopropyltrimethoxysilane And isocyanate based organosilicon compounds such as mercapto based organosilicon compounds and 3-isocyanatopropyltriethoxysilane.
  • epoxy-based organosilicon compounds such as 3-glycidoxypropyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrime
  • organic titanium compounds examples include titanium alkoxides such as tetraisopropyl titanate, titanium chelates such as titanium acetylacetonate, and titanium acylates such as titanium isostearate.
  • organic zirconium compounds include zirconium alkoxides such as normal propyl zirconate, zirconium chelates such as zirconium tetraacetylacetonate, and zirconium acylates such as zirconium stearate.
  • organoaluminum compound examples include aluminum alkoxides such as aluminum secondary butoxide, and aluminum chelates such as aluminum trisacetylacetonate.
  • the ratio of the organic metal compound in the substrate film is preferably 0.005 parts by weight or more, more preferably 0.01 parts by weight or more, still more preferably 0.
  • the content is at least 03 parts by weight, preferably at most 1.0 parts by weight, and more preferably at most 0.5 parts by weight.
  • the base film may contain optional components in addition to the resin, the plasticizer, the organometallic compound and the like.
  • optional components include stabilizers such as antioxidants, ultraviolet light absorbers, light stabilizers, etc .; resin modifiers such as lubricants; colorants such as dyes and pigments; and antistatic agents.
  • stabilizers such as antioxidants, ultraviolet light absorbers, light stabilizers, etc .
  • resin modifiers such as lubricants
  • colorants such as dyes and pigments
  • antistatic agents antistatic agents.
  • the base film forms a film (hereinafter, also referred to as a “resin composition”) containing a component (a resin and a component to be added as necessary) for forming the base film into a film by any forming method. It can be manufactured by molding.
  • the thickness of the substrate film is not less than the lower limit value of the above range, melting of the polarizer in the polarizing plate forming process can be effectively prevented, and by being not more than the upper limit value of the above range, the laminate is stretched. When the polarizing plate is obtained, the phase difference generated in the base film can be reduced.
  • FIG. 2 is the schematic which showed typically an example of the manufacturing apparatus 200 of the laminated body which concerns on this embodiment.
  • the manufacturing apparatus 200 includes feeding devices 201 and 202, a bonding device 205, and a winding device 203.
  • the PVA resin film 11 fed from the feeding device 201 is conveyed to the bonding device 205, an adhesive is applied by the bonding device 205, and the base film 12 fed from the feeding device 202.
  • the laminate 10 is obtained by pasting together.
  • the manufactured laminate 10 can be taken up by a take-up device 203, formed into a roll, and subjected to a further process.
  • the adhesive 13 for bonding the PVA resin film 11 and the base film 12 for example, an acrylic adhesive, a urethane adhesive, a polyester adhesive, a polyvinyl alcohol adhesive, a polyolefin resin Adhesive, modified polyolefin adhesive, polyvinyl alkyl ether adhesive, rubber adhesive, vinyl chloride-vinyl acetate adhesive, SEBS (styrene-ethylene-butylene-styrene copolymer) adhesive, ethylene-styrene
  • An ethylene-based adhesive such as a copolymer, an acrylic acid ester-based adhesive such as ethylene- (meth) acrylate copolymer, and an ethylene- (meth) acrylate copolymer may be used.
  • a high magnification for example, a draw ratio of 6.0
  • the surface of the substrate film 12 to be attached to the PVA resin film or the surface of the PVA resin film to be attached to the substrate film 12 is easily adhered by corona treatment, saponification treatment, primer treatment, anchor coating treatment, etc. Processing may be performed.
  • Re2 is 0 nm or more and 20 nm or less.
  • Re2 is preferably 0 nm or more, preferably 10 nm or less, more preferably 5 nm or less.
  • the phase difference which expresses to a base film can be made small.
  • the laminate 10 is uniaxially stretched free end uniaxially at a temperature condition of 50 ° C. to 120 ° C. 6.0 times and the substrate film in the laminate is a stretched product, the stretched product of the base film has , In-plane phase difference.
  • Re2 is not a retardation of the base film itself in the laminate, but is a retardation generated in a stretched product of the base film after the laminate is subjected to a specific stretching treatment.
  • the stretching temperature for obtaining such a stretched product may be any temperature within the range of 50 ° C to 120 ° C. Therefore, several operating conditions for stretching to obtain a stretched product are conceivable.
  • the stretched product exhibits a phase difference of 0 nm or more and 20 nm or less by any one of the plurality of operation conditions, the laminate satisfies the above requirements.
  • the stretched material exhibits a phase difference of 0 nm or more and 20 nm or less according to all of the plurality of possible operation conditions.
  • the laminate 10 of the present invention is a material for producing a polarizing plate.
  • the laminate is used as a polarizing plate after performing predetermined treatments such as stretching treatment and dyeing treatment.
  • the polarizing plate of the present invention manufactured using the laminate 10 of the present embodiment will be described below.
  • FIG. 3 is sectional drawing which showed typically the polarizing plate 100 manufactured using the laminated body 10 which concerns on this embodiment.
  • the base film 112 is laminated on one surface (upper surface in the drawing) of the PVA resin film 111.
  • 113 is an adhesive layer.
  • FIG. 4 is the figure which showed typically an example of the manufacturing apparatus 300 which manufactures the polarizing plate 100 using the laminated body 10 which concerns on this embodiment.
  • the manufacturing apparatus 300 includes feeding devices 301 and 307, processing devices 302 to 305, drying devices 306 and 309, a bonding device 308, and a winding device 310.
  • the method for producing a polarizing plate of the present invention includes the step of uniaxially stretching the laminate of the present invention (stretching treatment step).
  • the method for producing a polarizing plate of the present invention may include a dyeing treatment step of dyeing the laminate and / or a drying step of drying the laminate.
  • the laminate 10 fed from the feeding device 301 is conveyed to the processing devices 302 to 305 to dye the PVA resin film of the laminate (dye treatment step), uniaxially stretch the laminate Stretching treatment (stretching treatment step) and predetermined treatment are performed.
  • the treatment (drying step) of drying the laminate after these treatments is performed by the drying device 306, the polarizing plate 100 is obtained.
  • drying treatment step drying the laminate after these treatments is performed by the drying device 306
  • the stretching treatment step is a step of uniaxially stretching the laminate.
  • the method of stretching the laminate is not particularly limited, but wet stretching is preferred.
  • the stretching step may be performed once or twice or more.
  • the draw ratio of the laminate is preferably 5.0 or more, more preferably 5.5 or more, preferably 7.0 or less, more preferably 6.5 or less.
  • the draw ratio of the laminate is not more than the upper limit value of the above range, the expression of retardation of the substrate film is lowered even after passing through the manufacturing process of the polarizing plate including the drawing treatment, and the generation of breakage of the polarizing plate is prevented.
  • the stretching ratio is at least the lower limit of the above range, a polarizing plate having sufficient polarization performance can be obtained.
  • the laminate is stretched twice or more, it is preferable that the total stretch ratio represented by the product of the stretch ratio of each time be in the above range.
  • the stretching temperature of the laminate is not particularly limited, but is preferably 30 ° C. or more, more preferably 40 ° C. or more, particularly preferably 50 ° C. or more, preferably 140 ° C. or less, more preferably 90 ° C. or less, in particular Preferably it is 70 degrees C or less.
  • the stretching temperature is at least the lower limit value of the range, the stretching can be smoothly performed, and when the stretching temperature is at the upper limit value of the range or less, effective orientation can be performed by the stretching.
  • the range of the stretching temperature is preferably either dry stretching or wet stretching, but is particularly preferred in the case of wet stretching.
  • Stretching of the laminate is either longitudinal stretching in which the film is stretched in the longitudinal direction, transverse stretching in which the film is stretched in the width direction, or oblique stretching in which the film is stretched in an oblique direction which is neither parallel nor perpendicular to the film width direction.
  • the stretching treatment of the laminate is preferably free uniaxial stretching, and more preferably free uniaxial stretching in the longitudinal direction.
  • the dyeing treatment step is a step of dyeing the PVA resin film of the laminate.
  • the manufacturing method of the polarizing plate includes the dyeing process (step) of dyeing the PVA resin film of the laminate, but in the present invention, the dyeing process is optional and may not be included. .
  • the dyeing process may be performed before the stretching process.
  • the dyeing of the PVA resin film may be performed on the PVA resin film before the formation of the laminate.
  • a dichroic substance As a substance which dyes the PVA resin film in a dyeing
  • the dichroic substance is not particularly limited, but when the polarizing plate is used in a vehicle-mounted display, an organic dye is preferable as the dichroic substance.
  • a drying process is a process of drying the layered product which passed through processing processes, such as a dyeing processing process and a stretching processing process.
  • the laminate after the treatment step is preferably dried in a dryer at a temperature of 50 ° C. to 100 ° C. for 0.5 minutes to 10 minutes.
  • the drying temperature of the laminate is more preferably 60 ° C. or more, and more preferably 90 ° C. or less.
  • the drying time of the laminate is more preferably 1 minute or more, and more preferably 5 minutes or less.
  • the polarizing plate of the present embodiment uses the laminate including the base film together with the PVA resin film. Since it manufactures, generation
  • the thickness is equal to or less than the upper limit, the thickness of the polarizing plate can be reduced, and when the thickness is equal to or more than the lower limit, a polarizing plate having sufficiently high polarization performance can be obtained.
  • the retardation in the in-plane direction of the base film in the polarizing plate is preferably 20 nm or less, more preferably 15 nm or less, still more preferably 10 nm or less, and preferably 0 nm or more.
  • the retardation in the in-plane direction of the base film in the polarizing plate is within the above range, it is possible to suppress the black color shift when the polarizing plate is mounted on a liquid crystal display device.
  • a laminate including a PVA resin film having a small in-plane retardation Re1 and a small thickness, and a base film made of a flexible resin capable of being stretched at a low temperature and a high magnification rate is used. Since the polarizing plate is manufactured by stretching, even when the laminate is stretched at a high temperature under a low temperature, the occurrence of melting of the PVA resin film can be suppressed, and the retardation of the base film after stretching can be reduced. The expression can be suppressed.
  • the base film as it is as a protective film on one side of the PVA resin film as it is without peeling off, and waste material can be reduced.
  • FIG. 5 is a cross-sectional view schematically showing a polarizing plate 120 of Modification Example 1 manufactured using the laminate 10 according to Embodiment 1 of the present invention.
  • the base film 112 is laminated on one side (upper side in the figure) of the PVA resin film 111, and the other side (lower side in the figure) of the PVA resin film 111.
  • the protective film 115 is laminated on the side surface.
  • 113 and 114 are adhesive layers.
  • the adhesive for bonding the protective film 115 to the PVA resin film can be the same as the adhesive for bonding the base film to the PVA resin film.
  • the manufacturing method of the polarizing plate 120 which concerns on this example includes the process of bonding the protective film 115 to the PVA resin film 111 of the polarizing plate 100 obtained in Embodiment 1 directly or via an adhesive.
  • the polarizing plate 100 of Embodiment 1 is conveyed to the laminating apparatus 308, and the adhesive 114 is applied to the surface of the PVA resin film 111 on the side where the base film 112 is not laminated.
  • the polarizing plate 120 provided with the protective film 115 is obtained.
  • the manufactured polarizing plate 120 can be taken up by a take-up device 310, formed into a roll, and subjected to a further process.
  • the protective film 115 a film made of one or more resins selected from cycloolefin resin, acrylic resin, polyethylene terephthalate resin, and triacetyl cellulose resin can be used.
  • the polarizing plate of this example is also made of a PVA resin film having a small in-plane retardation Re1 and a small thickness, and a flexible resin capable of high-magnification stretching at a low temperature.
  • the polarizing plate is manufactured by stretching a laminate including the following substrate film, and therefore, the same effects and advantages as those of Embodiment 1 are obtained.
  • the protective film 115 is provided on the side of the PVA resin film 111 on which the base film 112 is not laminated, the surface of the PVA resin film 111 is also prevented from being scratched. Play.
  • FIG. 6 is a cross-sectional view schematically showing a polarizing plate 130 of Modification Example 2 manufactured using the laminate 10 according to Embodiment 1 of the present invention.
  • FIG. 6 is a cross-sectional view schematically showing the polarizing plate 130 of this example.
  • the base film 112 is laminated on one surface (upper side in the figure) of the PVA resin film 111, and the other side (lower side in the illustration) of the PVA resin film 111.
  • the adhesive layer 116 is laminated on the side surface).
  • the method of manufacturing the polarizing plate 130 according to this example includes the step of providing the pressure-sensitive adhesive layer 116 on the PVA resin film 111 of the polarizing plate 100 obtained in the first embodiment.
  • a pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 116 various commercially available pressure-sensitive adhesives, for example, a pressure-sensitive adhesive containing an acrylic polymer as a main component polymer can be used.
  • the polarizing plate 130 of this example is, for example, a film having a commercially available pressure-sensitive adhesive layer on the side of the polarizing plate 100 of Embodiment 1 where the base film 112 of the PVA resin film 111 is not laminated (e.g. It is obtained by transferring a pressure-sensitive adhesive layer from “MAS Stack Series”) to form a pressure-sensitive adhesive layer.
  • the polarizing plate 130 of this example also has a small thickness in the in-plane retardation Re1 and a small thickness, and a flexible resin capable of high-magnification stretching at a low temperature. And producing a polarizing plate by stretching a laminate including the base film. Therefore, the same effects as those of Embodiment 1 are obtained.
  • the adhesive layer 116 is provided on the side of the PVA resin film 111 on which the base film 112 is not laminated, so that the surface of the PVA resin film 111 is prevented from being damaged or the like. Also play.
  • Embodiment 2 laminate for polarizing plate and polarizing plate
  • laminate 15 (laminate for polarizing plate) of Embodiment 2 which is an embodiment of the present invention
  • the polarizer 150 manufactured using the laminate 15 and a method for manufacturing the same will be described with reference to FIGS. 7 and 8. While explaining.
  • the same components and aspects as those of Embodiment 1 are denoted by the same reference numerals, and duplicate descriptions will be omitted.
  • FIG. 7 is a cross-sectional view schematically showing a laminate 15 according to Embodiment 2 of the present invention
  • FIG. 8 schematically shows a polarizing plate 150 manufactured using the laminate 15 according to this embodiment.
  • the laminate 15 of this embodiment is different from the laminate of Embodiment 1 in that the base film 12 is directly laminated on the PVA resin film 11.
  • Examples of the method of directly laminating the base film 12 on the PVA resin film 11 include methods such as heat fusion, ultrasonic fusion, laser fusion and the like.
  • the base film “directly laminated” on the surface of the PVA resin film is prepared separately from the PVA resin film and the base film, and these are bonded so as to be in direct contact with each other without any other layer. Including the case.
  • the laminate 15 of this embodiment can also be a material for manufacturing a polarizing plate.
  • polarizing plate 150 of the present invention manufactured using the laminate 15 of the present embodiment will be described.
  • the polarizing plate 150 is obtained by uniaxially stretching the laminate 10 of the present embodiment.
  • the base film 112 is directly laminated on one surface (upper surface in the drawing) of the PVA resin film 111.
  • the polarizing plate 150 of the present embodiment can also be manufactured by the same method as the polarizing plate 100 of the first embodiment.
  • the polarizing plate of Embodiment 1 is composed of a PVA resin film having a small in-plane retardation Re1 and a small thickness, and a flexible resin capable of high-magnification stretching at low temperature. Since the polarizing plate 150 is manufactured by extending
  • the fracture suppression effect is excellent, and environmental pollution by other substances in the production environment is prevented, and There is also an effect of preventing contamination (contamination).
  • FIG. 9 is a cross-sectional view schematically showing a polarizing plate 160 of Modification 3 manufactured using the laminate according to Embodiment 2 of the present invention.
  • the base film 112 is laminated on one surface (upper side in the figure) of the PVA resin film 111, and the other side (lower side in the illustration) of the PVA resin film 111.
  • the protective film 115 is laminated via the adhesive layer 114.
  • the adhesive 114 for bonding the protective film 115 to the PVA resin film 111 can be the same as the adhesive for bonding the base film to the PVA resin film described in the first embodiment.
  • the manufacturing method of the polarizing plate 160 which concerns on this example includes the process of bonding the protective film 115 to the PVA resin film 111 of the polarizing plate 150 obtained in Embodiment 2 through an adhesive agent.
  • the method for bonding the protective film 115 and the protective film is the same as that of the first modification.
  • the polarizing plate 160 of this example also has a small thickness in the in-plane retardation Re1 and a small thickness, and a flexible resin capable of high-magnification stretching at a low temperature. And producing a polarizing plate by stretching a laminate including the base film. Therefore, the same effects as those of Embodiment 1 are obtained.
  • the fracture suppression effect is excellent, and environmental pollution by other substances in the production environment is prevented, and There is also an effect of preventing contamination (contamination).
  • the protective film 115 is provided on the side of the PVA resin film 111 on which the base film 112 is not laminated, so that the surface of the PVA resin film 111 can be prevented from being scratched. Play.
  • FIG. 10 is a cross-sectional view schematically showing a polarizing plate 170 of Modification Example 4 manufactured using the laminate according to Embodiment 2 of the present invention.
  • the base film 112 is laminated on one surface (upper side in the figure) of the PVA resin film 111, and the other side (lower side in the illustration) of the PVA resin film 111. And an adhesive layer 116 is laminated.
  • the method of manufacturing the polarizing plate 170 according to this example includes the step of providing the pressure-sensitive adhesive layer 116 on the PVA resin film 111 of the polarizing plate 150 obtained in the second embodiment.
  • the method of forming the pressure-sensitive adhesive layer 116 and the pressure-sensitive adhesive used to form the pressure-sensitive adhesive layer 116 are the same as in the second modification.
  • the polarizing plate 170 of this example also has a small thickness in the in-plane retardation Re1 and a small thickness, and a flexible resin capable of high-magnification stretching at a low temperature. And producing a polarizing plate by stretching a laminate including the base film. Therefore, the same effects as those of Embodiment 1 are obtained.
  • the fracture suppression effect is excellent, and environmental pollution by other substances in the production environment is prevented, and There is also an effect of preventing contamination (contamination).
  • the adhesive layer 116 is provided on the side of the PVA resin film 111 on which the base film 112 is not laminated, so that the surface of the PVA resin film 111 is prevented from being scratched or the like. Also play.
  • the polarizing plate manufactured using the laminated body for polarizing plates of this invention can become a material of a liquid crystal display device.
  • the liquid crystal display device comprises a light source, a light source side polarizing plate, a liquid crystal cell and a viewing side polarizing plate in this order, but the polarizing plate obtained by the present invention is either the light source side polarizing plate or the viewing side polarizing plate You may use.
  • IPS in-plane switching
  • VA vertical alignment
  • MVA multidomain vertical alignment
  • CPA continuous spin wheel alignment
  • HAN hybrid alignment nematic
  • TN twisted nematic
  • STN super twisted nematic
  • OBC optically compensated bend
  • the display apparatus 400 which concerns on Embodiment 3 provided with the polarizing plate 100 manufactured using the laminated body 10 of this invention is demonstrated, referring FIG.
  • the display device 400 of the present embodiment is manufactured by laminating the polarizing plate 100 of the first embodiment on a liquid crystal panel as a light source side polarizing plate and a viewing side polarizing plate.
  • FIG. 11 is a cross-sectional view schematically showing a display device 400 according to Embodiment 3 of the present invention.
  • the display device 400 includes two substrates 410 and 420, a liquid crystal layer 430 positioned therebetween, and polarizing plates 100 and 100 disposed outside the two substrates 410 and 420, respectively.
  • the two polarizing plates 100 are the polarizing plates 100 manufactured using the laminate 10 of the first embodiment.
  • the two polarizing plates 100 are laminated such that the base film 112 of the polarizing plate is disposed between the PVA resin film 111 of the polarizing plate and the liquid crystal layer 430, respectively. .
  • a display device provided with a polarizing plate that can be used as a protective film and can be efficiently manufactured even if the thickness is thin.
  • FIG. 12 is a cross-sectional view schematically showing a display device 450 according to Embodiment 4 of the present invention. As shown in FIG.
  • the display device 450 includes two substrates 410 and 420, a liquid crystal layer 430 positioned therebetween, and a polarizing plate 120 disposed on the outer surface (lower surface in the drawing) of the lower substrate 410. And.
  • the polarizing plate 120 is a polarizing plate of the first modification. As shown in FIG. 12, the polarizing plate 120 is laminated between the PVA resin film 111 of the polarizing plate and the liquid crystal layer 430 such that the base film 112 of the polarizing plate is disposed.
  • the present embodiment it is possible to provide a method for producing a display device provided with the polarizing plate of the present invention, which can be used as a protective film and can be efficiently produced even if the thickness is thin. Can.
  • FIG. 13 is a cross-sectional view schematically showing a display device 460 according to Embodiment 5 of the present invention.
  • the display device 460 includes two substrates 410 and 420, a liquid crystal layer 430 positioned therebetween, and a polarizing plate 160 disposed on the outer surface (lower surface in the drawing) of the lower substrate 410. And.
  • the polarizing plate 160 is a polarizing plate of the third modification. As shown in FIG. 13, the polarizing plate 160 is laminated between the PVA resin film 111 of the polarizing plate and the liquid crystal layer 430 such that the base film 112 of the polarizing plate is disposed.
  • the present embodiment it is possible to provide a method for producing a display device provided with the polarizing plate of the present invention, which can be used as a protective film and can be efficiently produced even if the thickness is thin. Can.
  • the polarizing plate manufactured using the laminated body for polarizing plates of this invention can become a material of EL display apparatus.
  • the organic EL display device comprises, in order from the light emitting side, a substrate, a transparent electrode, a light emitting layer and a metal electrode layer, but the polarizing plate obtained by the manufacturing method of the present invention is disposed on the light emitting side of the substrate. Ru.
  • the EL display device has two substrates, a light emitting layer positioned between them, and a polarizing plate disposed outside one of the two substrates.
  • the display device can be manufactured by laminating the polarizing plate of the present invention on an organic EL panel or an inorganic EL panel.
  • FIG. 14 is a cross-sectional view schematically showing a display device 500 according to Embodiment 6 of the present invention.
  • the display device 500 includes two substrates 510 and 520, a light emitting layer 530 positioned therebetween, and a polarizing plate 100 disposed on the outer surface (lower surface in the drawing) of the lower substrate 510.
  • the polarizing plate 100 is the polarizing plate of the first embodiment. As shown in FIG. 14, the polarizing plate 100 is laminated such that the base film 112 of the polarizing plate 100 is disposed between the PVA resin film 111 of the polarizing plate 100 and the light emitting layer 530.
  • the present embodiment it is possible to provide a display device provided with the polarizing plate of the present invention, which can be used as a protective film and can be efficiently manufactured even if the thickness is thin.
  • FIG. 15 is a cross-sectional view schematically showing a display device 550 according to Embodiment 7 of the present invention.
  • the display device 550 has two substrates 510 and 520, a light emitting layer 530 positioned therebetween, and a polarizing plate 120 disposed on the outer surface (lower surface in the drawing) of the lower substrate 510.
  • the polarizing plate 120 is a polarizing plate of the first modification. As shown in FIG. 15, the polarizing plate 120 is laminated such that the base film 112 of the polarizing plate 120 is disposed between the PVA resin film 111 of the polarizing plate 120 and the light emitting layer 530.
  • the present embodiment it is possible to provide a display device provided with the polarizing plate of the present invention, which can be used as a protective film and can be efficiently manufactured even if the thickness is thin.
  • Embodiment 8 Display Device A display device 560 according to Embodiment 8 including a polarizing plate manufactured using the laminate of the present invention will be described with reference to FIG.
  • the display device 560 of the present embodiment is manufactured by laminating the polarizing plate 160 of the present invention on an organic EL panel.
  • FIG. 16 is a cross-sectional view schematically showing a display device 560 according to Embodiment 8 of the present invention.
  • the display device 560 includes two substrates 510 and 520, a light emitting layer 530 positioned therebetween, and a polarizing plate 160 disposed on the outer side (lower side in the drawing) of the lower substrate 510.
  • the polarizing plate 160 is a polarizing plate of the third modification. As shown in FIG. 16, the polarizing plate 160 is laminated so that the base film 112 of the polarizing plate 160 is disposed between the PVA resin film 111 of the polarizing plate 160 and the light emitting layer 530.
  • the present embodiment it is possible to provide a display device provided with the polarizing plate of the present invention, which can be used as a protective film and can be efficiently manufactured even if the thickness is thin.
  • Embodiment 3 although the polarizing plate of Embodiment 1 was respectively used for the light source side polarizing plate and the viewing side polarizing plate, one of the polarizing plates is configured by another polarizing plate. Alternatively, two polarizing plates of the second embodiment or the first to fourth modifications of the second embodiment may be used.
  • the polarizing plate of Modified Example 1 and the polarizing plate of Modified Example 3 are respectively used for one of the light source side polarizing plate and the visible side polarizing plate.
  • the polarizing plate of Embodiment 2, Modification 2 or Modification 4 may be used.
  • the organic EL display device includes the polarizing plate of the first embodiment, the polarizing plate of the first modification, and the polarizing plate of the third modification, but the present invention is not limited thereto.
  • the polarizing plate of Embodiment 2 the polarizing plate of Modified Example 2, or the polarizing plate of Modified Example 4 may be used, or the polarizing plate of the present invention may be used in an inorganic EL display device.
  • the hydrogenation rate of the block copolymer hydride was calculated by 1 H-NMR spectrum or GPC analysis.
  • the region having a hydrogenation rate of 99% or less was calculated by measuring 1 H-NMR spectrum, and the region exceeding 99% was calculated by GPC analysis from the ratio of peak areas by a UV detector and an RI detector.
  • melt flow rate measured at 190 ° C., load 2.16 kg
  • the melt flow rate is based on JIS K 7210, using an extrusion type plastometer (manufactured by Tateyama Scientific Co., Ltd., trade name "Melt Indexer (L240)”) under conditions of a temperature of 190 ° C. and a load of 2.16 kg. It was measured.
  • the tensile modulus of elasticity was measured according to JIS K7127 using a tensile tester (manufactured by Instron Japan Company, Ltd., trade name “electromechanical universal material tester (5564)), according to the following method.
  • the base film was punched into the shape of a test piece type 1B described in JIS K7127, and the stress at the time of stretching and distorting the test piece in the direction of the long side was measured.
  • the measurement conditions of the stress were a temperature of 23 ° C., a humidity of 60 ⁇ 5% RH, a distance between chucks of 115 mm, and a tensile speed of 50 mm / min.
  • the stress measurement was performed five times. From the measured stress and the strain measurement data corresponding to the stress, the measurement data of 4 points per 0.2% within the strain range of 0.6% to 1.2% of the test piece (ie, the strain is Select measurement data at 0.6%, 0.8%, 1.0% and 1.2%, and use the least squares method from 4 measurement data (total 20 points) of 5 measurements. The tensile modulus was calculated.
  • the retardation Re1 of the polyvinyl alcohol resin film in the in-plane direction, the retardation Re2 of the in-plane direction of the stretched product of the base film, and the retardation of the in-plane direction of the base film in the polarizing plate are It measured using the product made from Opto Science, and a brand name "Mula matrix polarimeter (Axo Scan)". At the time of measurement, the measurement wavelength was 550 nm. Retardation of the base film in the in-plane direction which occurs when uniaxially stretching the laminate at 6.0 times at 50 ° C., and 6.0 times at 120 ° C.
  • both of the retardations in the in-plane direction of the base film generated when uniaxially stretched at the free end are within the range of 0 nm to 20 nm
  • the laminate is subjected to a temperature condition of 50 ° C. to 120 ° C., 6.0.
  • the retardation Re2 in the in-plane direction of the base film, which occurs when the free end uniaxial stretching is performed twice, is determined to be 0 nm or more and 20 nm or less.
  • the liquid crystal display panel is removed from the liquid crystal display device (manufactured by LG Electronics Japan, trade name "IPS panel monitor (23MP47)"), and the polarizing plate disposed on the viewing side is peeled off.
  • the resulting polarizing plate was bonded such that the substrate film was on the panel side.
  • the polarizer single body without a protective film was bonded next to the polarizing plate produced by the Example and the comparative example, and the liquid crystal display was reassembled.
  • the absorption axes of the polarizing plate prepared in Examples and Comparative Examples and the single polarizer without the protective film were bonded in the same direction as the absorption axis of the polarizing plate before peeling.
  • the panel When the direction of the absorption axis of the polarizing plate disposed on the viewing side is an azimuth angle of 0 ° and the vertical direction of the panel is a polar angle of 0 °, the panel is displayed in black (that is, black color is displayed on the entire display screen of the panel) In a state of 45 ° azimuth and 45 ° polar angle, the same color change as in the case of a polarizer without a protective film and the one with a slight color change are B, Those with a large change were judged to be C.
  • Example 1 (1-1) Preparation of Polymer X Referring to the production example described in JP-A-2002-105151, after 25 parts of the styrene monomer are polymerized in the first step, 30 parts of the styrene monomer in the second step and After 25 parts of isoprene monomer is polymerized and then 20 parts of styrene monomer is polymerized in the third step to obtain a block copolymer [D1], the block copolymer is hydrogenated to obtain a hydrogenated block copolymer [ E1] was synthesized.
  • Mw of the block copolymer hydride [E1] was 84,500, Mw / Mn was 1.20, and the hydrogenation rate of the main chain and the aromatic ring was almost 100%.
  • 100 parts of block copolymer hydride [E1], pentaerythrityl tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] (manufactured by Matsubara Sangyo Co., Ltd.) as an antioxidant
  • 0.1 parts of the name "Songnox 1010” was melt-kneaded and blended, it was pelletized to obtain a polymer X for molding.
  • a long base film containing Polymer X having a width of 650 mm, a length of 500 m, and a thickness of 10 ⁇ m was obtained.
  • the MFR of the base film was 10 g / 10 min, and the tensile modulus was 600 MPa.
  • the thickness of the base film in the obtained laminate, the thickness of the polyvinyl alcohol resin film, the in-plane retardation Re1 and the retardation Re2 were measured. The results are set forth in Table 1.
  • the temperature conditions of the free end uniaxial stretching were 50 ° C. and 120 ° C.
  • (1-4) Production of Polarizing Plate The following operation was performed while continuously conveying the laminate produced in (1-3) in the longitudinal direction via a guide roll.
  • the above-mentioned laminate was subjected to a swelling treatment in which it was immersed in water, a dyeing treatment in which it was immersed in a dyeing solution containing iodine and potassium iodide, and a first stretching treatment to stretch the laminate after the dyeing treatment.
  • the laminate after the first stretching treatment was subjected to a second stretching treatment of stretching in a bath containing boric acid and potassium iodide.
  • the total draw ratio represented by the product of the draw ratio in the first drawing process and the draw ratio in the second drawing process was set to 6.0.
  • the laminate after the second stretching treatment was dried in a dryer at 70 ° C. for 5 minutes (drying step) to obtain a polarizing plate.
  • the adhesion was evaluated in the steps up to the second stretching treatment, the drying step was evaluated in the drying step, and the black color shift was evaluated for the obtained polarizing plate.
  • the evaluation results are shown in Table 1.
  • the thickness and retardation of the base film in the obtained polarizing plate, and the thickness of the polyvinyl alcohol resin film were measured. The measurement results are shown in Table 1.
  • Example 2 In Example 1 (1-2), 0.1 parts by weight of an organic silicon compound (tetraisopropyl titanate, Organix TA-8, manufactured by Matsumoto Fine Chemical Co., Ltd.) was substituted for 0.1 parts by weight of the organosilicon compound.
  • An organic silicon compound tetraisopropyl titanate, Organix TA-8, manufactured by Matsumoto Fine Chemical Co., Ltd.
  • a laminate and a polarizing plate were produced in the same manner as in Example 1 except that the base film obtained by the addition was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.
  • Example 3 In Example 1 (1-2), 0.1 parts by weight of an organic zirconium compound instead of 0.1 parts by weight of an organosilicon compound (normal propyl zirconate, Orgatics ZA-45, manufactured by Matsumoto Fine Chemical Co., Ltd.) A laminate and a polarizing plate were produced in the same manner as in Example 1 except that a substrate film obtained by adding H.sub.2 was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.
  • an organosilicon compound normal propyl zirconate, Orgatics ZA-45, manufactured by Matsumoto Fine Chemical Co., Ltd.
  • Example 4 In (1-2) of Example 1, when performing an operation of applying a coating solution for film formation to a separator film using a die coater and drying, the coating amount and the like are adjusted, and the thickness is 5 ⁇ m long
  • a laminate and a polarizing plate were produced in the same manner as in Example 1 except that a base film (having the same width and length as in Example 1) was produced, and evaluated in the same manner as in Example 1. .
  • the results are shown in Table 1.
  • Example 5 A laminate and a polarizing plate were produced in the same manner as in Example 1 except that polyisobutene was not used in (1-2) of Example 1, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 2.
  • the MFR of the base film used in Example 5 was 3 g / 10 min, and the tensile modulus was 800 MPa.
  • Example 6 In (1-2) of Example 1, when the organic silicon compound was not used, and the coating solution for film formation was applied to a separator film using a die coater and dried, A laminate and a polarizing plate are produced in the same manner as in Example 1 except that a long base film (having the same width and length as in Example 1) having a thickness of 5 ⁇ m is prepared. Evaluation was performed in the same manner as in Example 1. The results are shown in Table 2.
  • Example 1 In Example 1 (1-3), a cycloolefin resin film having a modulus of elasticity of 2300 MPa (Zeonor film, manufactured by Nippon Zeon, thickness 13 ⁇ m, temperature 190 ° C., instead of the base film manufactured in (1-2) A laminate was manufactured in the same manner as Example 1, except that the MFR at a load of 2.16 kg was not measured. When the same operation as in (1-4) of Example 1 was performed using the laminate, breakage occurred in the first stretching treatment, and a polarizing plate could not be produced.
  • Zeonor film manufactured by Nippon Zeon, thickness 13 ⁇ m, temperature 190 ° C.

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PCT/JP2018/047680 2017-12-28 2018-12-25 偏光板用積層体、偏光板、表示装置、及び偏光板の製造方法 WO2019131684A1 (ja)

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CN201880081323.4A CN111480101B (zh) 2017-12-28 2018-12-25 偏振片用层叠体、偏振片、显示装置及偏振片的制造方法
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Publication number Priority date Publication date Assignee Title
JP2004004755A (ja) * 2002-04-18 2004-01-08 Nitto Denko Corp 光学補償機能付き偏光板、及びそれを用いた液晶表示装置
JP2011013378A (ja) * 2009-06-30 2011-01-20 Nippon Zeon Co Ltd フィルム
JP2017097048A (ja) * 2015-11-19 2017-06-01 日本合成化学工業株式会社 偏光板用積層体および偏光板

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Publication number Priority date Publication date Assignee Title
TWI225551B (en) * 2002-04-18 2004-12-21 Nitto Denko Corp Polarization plate having optical compensation function and liquid crystal display device using the same
JP4640566B2 (ja) * 2003-09-30 2011-03-02 ソニーケミカル＆インフォメーションデバイス株式会社 偏光板
JP4755891B2 (ja) * 2004-12-28 2011-08-24 日本合成化学工業株式会社 ポリビニルアルコール系フィルム、およびそれを用いた偏光膜、偏光板
JP2009098653A (ja) * 2007-09-27 2009-05-07 Nitto Denko Corp 偏光板、光学フィルムおよび画像表示装置
JP4691205B1 (ja) 2010-09-03 2011-06-01 日東電工株式会社 薄型高機能偏光膜を含む光学フィルム積層体の製造方法
KR102001977B1 (ko) * 2012-03-15 2019-07-19 니폰 제온 가부시키가이샤 유기 el 표시 장치
JP2013238770A (ja) * 2012-05-16 2013-11-28 Fujifilm Corp 液晶表示装置
US10865302B2 (en) * 2016-01-29 2020-12-15 Zeon Corporation Resin composition and use thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004004755A (ja) * 2002-04-18 2004-01-08 Nitto Denko Corp 光学補償機能付き偏光板、及びそれを用いた液晶表示装置
JP2011013378A (ja) * 2009-06-30 2011-01-20 Nippon Zeon Co Ltd フィルム
JP2017097048A (ja) * 2015-11-19 2017-06-01 日本合成化学工業株式会社 偏光板用積層体および偏光板

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