WO2023276611A1 - Procédé de production d'une plaque de polarisation, procédé de production d'un dispositif d'affichage électroluminescent organique, plaque de polarisation, dispositif d'affichage électroluminescent organique et dispositif d'affichage à cristaux liquides - Google Patents

Procédé de production d'une plaque de polarisation, procédé de production d'un dispositif d'affichage électroluminescent organique, plaque de polarisation, dispositif d'affichage électroluminescent organique et dispositif d'affichage à cristaux liquides Download PDF

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WO2023276611A1
WO2023276611A1 PCT/JP2022/023434 JP2022023434W WO2023276611A1 WO 2023276611 A1 WO2023276611 A1 WO 2023276611A1 JP 2022023434 W JP2022023434 W JP 2022023434W WO 2023276611 A1 WO2023276611 A1 WO 2023276611A1
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optically anisotropic
anisotropic layer
liquid crystal
polarizing plate
layer
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PCT/JP2022/023434
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English (en)
Japanese (ja)
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敏博 小西
彩子 村松
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富士フイルム株式会社
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Publication of WO2023276611A1 publication Critical patent/WO2023276611A1/fr

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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
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • 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
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources

Definitions

  • the present invention relates to a method for manufacturing a polarizing plate, a method for manufacturing an organic electroluminescence display device, a polarizing plate, an organic electroluminescence display device, and a liquid crystal display device.
  • Patent Document 1 discloses a polarizing plate in which an optically anisotropic layer and a polarizer are combined.
  • a transfer film containing a temporary support and an A plate, and a transfer film containing a temporary support and a C plate are prepared, and the A plate is prepared.
  • a method of manufacturing a polarizing plate by further transferring a C-plate after transferring onto a transfer-receiving material is disclosed.
  • Patent Document 1 discloses a mode of preparing a transfer film including a temporary support and an A plate and a transfer film including a temporary support and a C plate.
  • a method for producing a polarizing plate by a method other than the above has also been desired.
  • An object of the present invention is to provide a novel method for manufacturing a polarizing plate in view of the above circumstances. Another object of the present invention is to provide a thin polarizing plate with excellent adhesion between the polarizer and the optically anisotropic layer. Another object of the present invention is to provide a method for manufacturing an organic electroluminescence display device, an organic electroluminescence display device, and a liquid crystal display device.
  • the optically anisotropic layer in the first transfer film containing the first temporary support and the optically anisotropic layer disposed on the first temporary support and formed using a liquid crystal compound is the second temporary support.
  • the first transfer film and the second temporary support are laminated so as to face the support, the first temporary support is peeled off, and the optically anisotropic layer is transferred onto the second temporary support.
  • obtaining a second transfer film comprising an optically anisotropic layer and a second temporary support;
  • the second transfer film and the polarizer are attached so that the optically anisotropic layer in the second transfer film faces the polarizer, the second temporary support is peeled off, and the optically anisotropic layer is placed on the polarizer.
  • a method for producing a polarizing plate comprising the step of transferring a magnetic layer to obtain a polarizing plate, The alignment direction of the liquid crystal compound on the surface of the optically anisotropic layer on the side of the first temporary support in the first transfer film, and the alignment direction of the liquid crystal compound on the surface of the optically anisotropic layer opposite to the first temporary support side.
  • the method for producing a polarizing plate according to (1) wherein the total amount of fluorine atoms and silicon atoms in (3)
  • the method for producing a polarizing plate according to (1) or (2) wherein the first transfer film and the second temporary support are bonded via an adhesion layer.
  • the adhesion layer and the optically anisotropic layer are in direct contact, the orientation direction of the liquid crystal compound on the surface of the optically anisotropic layer facing the adhesion layer is different from the orientation direction of the liquid crystal compound on the surface of the optically anisotropic layer opposite to the adhesion layer side, the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer facing the adhesion layer is smaller than the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer opposite to the adhesion layer side; Polarizer.
  • An organic electroluminescence display device comprising an organic electroluminescence display element and the polarizing plate according to (9).
  • the manufacturing method of a novel polarizing plate can be provided. Moreover, according to the present invention, it is possible to provide a polarizing plate having excellent adhesion between the polarizer and the optically anisotropic layer and having a small thickness. Further, according to the present invention, it is possible to provide a method for manufacturing an organic electroluminescence display device, an organic electroluminescence display device, and a liquid crystal display device.
  • Re( ⁇ ) and Rth( ⁇ ) represent in-plane retardation and thickness direction retardation at wavelength ⁇ , respectively. Unless otherwise specified, the wavelength ⁇ is 550 nm.
  • Average refractive index values of main optical films are exemplified below: cellulose acylate (1.48), cycloolefin polymer (1.52), polycarbonate (1.59), polymethyl methacrylate (1.49), and polystyrene (1.59).
  • light means actinic rays or radiation, and includes, for example, the emission line spectrum of mercury lamps, far ultraviolet rays represented by excimer lasers, extreme ultraviolet rays (EUV light: Extreme Ultraviolet), X-rays, ultraviolet rays, and electron beam (EB). Among them, ultraviolet rays are preferable.
  • EUV light Extreme Ultraviolet
  • X-rays extreme ultraviolet rays
  • EB electron beam
  • ultraviolet rays are preferable.
  • the bonding direction of the divalent group (eg, —O — CO—) represented in this specification is not particularly limited.
  • L 2 is * 1 -O—CO-* 2 , where *1 is the position bonded to the L1 side and *2 is the position bonded to the L3 side. may be *1-CO-O-*2.
  • a plate and C plate are defined as follows. There are two types of A plates, a positive A plate (positive A plate) and a negative A plate (negative A plate). ) is nx, the refractive index in the direction orthogonal to the in-plane slow axis is ny, and the refractive index in the thickness direction is nz, the positive A plate satisfies the relationship of formula (A1). and the negative A plate satisfies the relationship of formula (A2).
  • a positive A plate shows a positive Rth value
  • a negative A plate shows a negative Rth value.
  • C plates There are two types of C plates, a positive C plate (positive C plate) and a negative C plate (negative C plate), the positive C plate satisfies the relationship of formula (C1), and the negative C plate It satisfies the relationship of formula (C2).
  • a positive C plate shows a negative Rth value
  • a negative C plate shows a positive Rth value.
  • Formula (C2) nz ⁇ nx ⁇ ny Note that the above “ ⁇ ” includes not only the case where both are completely the same, but also the case where both are substantially the same. "Substantially the same” means, for example, that (nx - ny) x d (where d is the thickness of the film) is 0 to 10 nm, preferably 0 to 5 nm.
  • perpendicular or “parallel” shall include the range of error allowed in the technical field to which the present invention belongs. For example, it means that the angle is within a strict range of ⁇ 5°, and the error from the strict angle is preferably within a range of ⁇ 3°.
  • a feature of the method for producing a polarizing plate of the present invention is that the optically anisotropic layer placed on the first temporary support is first transferred onto the second temporary support and then transferred onto the polarizer.
  • the optically anisotropic layer is first temporarily supported in the first transfer film when the optically anisotropic layer is transferred onto the polarizer.
  • the surface positioned on the body side becomes the surface positioned on the polarizer side of the optically anisotropic layer in the polarizing plate.
  • the alignment direction of the liquid crystal compound on one surface is different from the alignment direction of the liquid crystal compound on the other surface.
  • the characteristics of the obtained polarizing plate may change depending on the lamination direction of the optically anisotropic layer.
  • the alignment state of the liquid crystal compound on the first temporary support side surface of the optically anisotropic layer in the first transfer film is determined by the polarizer side surface of the optically anisotropic layer in the polarizing plate. It can be the alignment state of the liquid crystal compound in.
  • a first transfer film 100 including a first temporary support 10 and an optically anisotropic layer 12 disposed on the first temporary support 10 is prepared.
  • the optically anisotropic layer 12 is a layer formed using a liquid crystal compound.
  • the alignment directions of the liquid crystal compounds on the first surface 121 of the optically anisotropic layer 12 on the side of the first temporary support 10 and the second surface 122 on the side opposite to the side of the first temporary support 10 are different from each other.
  • the first transfer film 100 and the second temporary support 14 are separated so that the optically anisotropic layer 12 in the first transfer film 100 and the second temporary support 14 face each other. are pasted together.
  • the first temporary support 10 is peeled off from the obtained laminate, and as shown in FIG. 3, the optically anisotropic layer 12 is transferred onto the second temporary support 14 to form a second transfer film. Get 200.
  • the second transfer film 200 and the polarizer 16 are bonded so that the optically anisotropic layer 12 side of the second transfer film 200 faces the polarizer 16 .
  • FIG. 4 the second transfer film 200 and the polarizer 16 are bonded so that the optically anisotropic layer 12 side of the second transfer film 200 faces the polarizer 16 .
  • the second temporary support 14 is peeled off from the obtained laminate, and the optically anisotropic layer 12 is transferred onto the polarizer 16 to produce the polarizing plate 300 .
  • the first surface 121 of the optically anisotropic layer 12 is arranged on the polarizer 16 side.
  • the polarizer 16 is attached to the optically anisotropic layer 12 side of the first transfer film 100 shown in FIG.
  • the polarizer 16 is arranged on the 122 side, which is different from the lamination direction of the optically anisotropic layers in the polarizing plate obtained by the production method of the present invention.
  • the optically anisotropic layer 12 may include a plurality of layers containing liquid crystal compounds with different alignment states along the thickness direction. In such a case, the lamination order of each layer on the polarizer particularly affects the properties of the polarizing plate.
  • the optically anisotropic layer is laminated in a direction different from the lamination direction of the optically anisotropic layer in the polarizing plate obtained by the conventional lamination method as shown in FIG. can be laminated onto the polarizer.
  • the optically anisotropic layer in the first transfer film which is disposed on the first temporary support and the optically anisotropic layer formed using a liquid crystal compound, is disposed on the first temporary support.
  • the first transfer film and the second temporary support are bonded so that the polar layer faces the second temporary support, the first temporary support is peeled off, and the optical layer is placed on the second temporary support.
  • a step of transferring the anisotropic layer to obtain a second transfer film including the optically anisotropic layer and the second temporary support (hereinafter also referred to as the first step);
  • the second transfer film and the polarizer are attached so that the optically anisotropic layer in the second transfer film faces the polarizer, the second temporary support is peeled off, and the optically anisotropic layer is placed on the polarizer.
  • a step of transferring the optical layer to obtain a polarizing plate hereinafter also referred to as a second step). The procedure of the method for manufacturing the polarizing plate of the present invention will be described in detail below.
  • the first step is a step of transferring the optically anisotropic layer in the first transfer film onto the second temporary support to obtain the second transfer film.
  • the first temporary support and the second temporary support are substrates that support the optically anisotropic layer. Adheres releasably. In other words, the temporary support is a peelable support.
  • Materials constituting the temporary support are not particularly limited, and examples thereof include polyester resins, cellulose resins, (meth)acrylic resins, polycarbonate resins, styrene resins, polyolefin resins, vinyl chloride resins, and amides. system resin.
  • (Meth)acrylic resin is a general term for acrylic resin and methacrylic resin.
  • the temporary support may have a single layer structure or a multilayer structure.
  • the temporary support may include a substrate and a base layer containing a resin disposed on the substrate.
  • the material that constitutes the substrate is not particularly limited, and examples thereof include the materials that constitute the support described above.
  • the thickness of the substrate is preferably 10-150 ⁇ m, more preferably 20-100 ⁇ m.
  • the underlayer may be a so-called alignment film.
  • the alignment film is formed by rubbing an organic compound (preferably polymer), oblique vapor deposition of an inorganic compound, formation of a layer having microgrooves, or organic compound (eg, ⁇ -tricosane) by the Langmuir-Blodgett method (LB film). acid, dioctadecylmethylammonium chloride, methyl stearate).
  • LB film Langmuir-Blodgett method
  • acid dioctadecylmethylammonium chloride, methyl stearate
  • a photo-alignment film is also mentioned as an alignment film.
  • the thickness of the alignment film is not particularly limited as long as the alignment function can be exhibited, but is preferably 0.01 to 5.0 ⁇ m, more preferably 0.05 to 2.0 ⁇ m.
  • the thickness of the temporary support is not particularly limited, it is preferably 10 to 200 ⁇ m, more preferably 20 to 150 ⁇ m, from the standpoint of excellent handleability.
  • the optically anisotropic layer is a layer formed using a liquid crystal compound.
  • the optically anisotropic layer is preferably a layer formed by fixing a liquid crystal compound, and more preferably a layer formed by fixing a liquid crystal compound having a polymerizable group by polymerization.
  • the "fixed" state is a state in which the orientation of the liquid crystal compound is maintained.
  • the layer does not have fluidity in the temperature range of 0 to 50° C., and -30 to 70° C. under more severe conditions, and the orientation is changed by an external field or force. It is preferable to be in a state in which the fixed alignment form can be stably maintained.
  • liquid crystal compound is not particularly limited, and examples thereof include compounds capable of any one of homeotropic alignment, homogeneous alignment, hybrid alignment, and cholesteric alignment.
  • liquid crystal compounds can generally be classified into rod-like liquid crystal compounds and discotic liquid crystal compounds according to their shapes.
  • low-molecular-weight and high-molecular-weight types respectively.
  • Polymers generally refer to those having a degree of polymerization of 100 or more (Polymer Physics: Phase Transition Dynamics, Masao Doi, p. 2, Iwanami Shoten, 1992).
  • rod-like liquid crystal compounds or discotic liquid crystal compounds disk-like liquid crystal compounds
  • a monomer or a relatively low-molecular-weight liquid crystal compound having a degree of polymerization of less than 100 is preferable.
  • the liquid crystal compound preferably has a polymerizable group. That is, the liquid crystal compound is preferably a polymerizable liquid crystal compound.
  • the polymerizable group possessed by the polymerizable liquid crystal compound include an acryloyl group, a methacryloyl group, an epoxy group, and a vinyl group.
  • rod-like liquid crystal compound for example, those described in claim 1 of JP-A-11-513019 or paragraphs [0026] to [0098] of JP-A-2005-289980 are preferable, and as the discotic liquid crystal compound, For example, those described in paragraphs [0020] to [0067] of JP-A-2007-108732 or paragraphs [0013] to [0108] of JP-A-2010-244038 are preferable. Moreover, you may use a reverse wavelength dispersion liquid crystal compound as a liquid crystal compound.
  • the alignment direction of the liquid crystal compound on one surface is different from the alignment direction of the liquid crystal compound on the other surface.
  • the above two surfaces are so-called main surfaces, and refer to a pair of surfaces having the largest area in the optically anisotropic layer. Therefore, in the first transfer film, the alignment direction of the liquid crystal compound on the surface of the optically anisotropic layer facing the first temporary support and the liquid crystal on the surface of the optically anisotropic layer opposite to the first temporary support It is different from the alignment direction of the compound.
  • the alignment direction of the liquid crystal compound is different, for example, when the liquid crystal compound is horizontally aligned on one surface and vertically aligned on the other surface. In addition, when the liquid crystal compound is horizontally aligned on both surfaces, but the alignment directions are different (when the in-plane slow axis directions are different), it corresponds to the case where the alignment direction of the liquid crystal compound is different. do.
  • the optically anisotropic layer has a plurality of layers containing liquid crystal compounds with different alignment states along the thickness direction.
  • the aspect containing is mentioned.
  • the optically anisotropic layer preferably includes a plurality of layers in which liquid crystal compounds with different alignment states are fixed along the thickness direction.
  • the orientation states that the liquid crystal compound can take include, for example, twisted orientation (preferably twisted hybrid orientation), homogeneous orientation, homeotropic orientation, hybrid orientation, and tilted orientation.
  • the twisted alignment refers to an alignment state in which the liquid crystal compound is twisted around the thickness direction as the axis of rotation. It corresponds to hybrid orientation.
  • optically anisotropic layer includes a plurality of layers containing liquid crystal compounds with different alignment states along the thickness direction
  • an optically anisotropic layer that satisfies the following requirements 1 to 4 is preferable.
  • Requirement 1 The optically anisotropic layer in the first transfer film includes an A plate and a C plate from the first temporary support side.
  • Requirement 2 The optically anisotropic layer in the first transfer film includes a ⁇ /2 plate and a ⁇ /4 plate from the first temporary support side.
  • the optically anisotropic layer in the first transfer film includes, from the side of the first temporary support, an A plate and a layer in which a liquid crystal compound twisted along a helical axis extending in the thickness direction is fixed.
  • the optically anisotropic layer in the first transfer film includes a C plate and an A plate from the side of the first temporary support.
  • the display performance is more excellent when the polarizing plate obtained by the manufacturing method of the present invention is applied as a polarizer on the viewing side of a liquid crystal display device.
  • the polarizing plate obtained by the manufacturing method of the present invention is applied as a polarizer on the viewing side of a liquid crystal display device.
  • the optically anisotropic layer in the first transfer film includes an A plate and a C plate from the first temporary support side. More specifically, as shown in FIG. 7, an optically anisotropic layer 12A satisfying Requirement 1 includes an A plate 20 and a C plate 22 from the first temporary support 10 side.
  • the A plate may be either a negative A plate or a positive A plate.
  • a layer formed by fixing discotic liquid crystal compounds which are vertically aligned and whose optical axes (axis perpendicular to the disc surface) are arranged in the same direction is preferable.
  • a layer formed by fixing a homogeneously aligned rod-like liquid crystal compound is preferable.
  • the in-plane retardation of the A plate at a wavelength of 550 nm is not particularly limited, it is preferably 90 to 220 nm in that the antireflection function when the polarizing plate obtained by the production method of the present invention is applied to an organic electroluminescence display device is more excellent. , from 110 to 200 nm.
  • the A-plate exhibits forward wavelength dispersion (characteristic in which in-plane retardation decreases as the measurement wavelength increases), it exhibits reverse wavelength dispersion (characteristic in which in-plane retardation increases as the measurement wavelength increases. ) may be shown.
  • the forward wavelength dispersion and the reverse wavelength dispersion are preferably exhibited in the visible light range.
  • the A plate is preferably a layer formed by fixing a liquid crystal compound having a polymerizable group by polymerization.
  • the thickness of the A plate is not particularly limited, and is preferably 10 ⁇ m or less, more preferably 0.1 to 5.0 ⁇ m, even more preferably 0.3 to 3.0 ⁇ m, particularly preferably 0.5 to 2.0 ⁇ m.
  • the thickness of A plate intends the average thickness of A plate. The average thickness is obtained by measuring the thickness of the A plate at five or more arbitrary points and arithmetically averaging them.
  • the C plate may be either a negative C plate or a positive C plate.
  • the absolute value of the retardation in the thickness direction of the C plate at a wavelength of 550 nm is not particularly limited. ⁇ 160 nm is preferred, and 20 to 130 nm is more preferred.
  • the C plate is preferably a layer formed by fixing a liquid crystal compound having a polymerizable group by polymerization.
  • the thickness of the C plate is not particularly limited, and is preferably 10 ⁇ m or less, more preferably 0.1 to 5.0 ⁇ m, even more preferably 0.3 to 2.0 ⁇ m.
  • the thickness of the C plate intends the average thickness of the C plate. The average thickness is obtained by measuring the thickness of the C plate at five or more arbitrary points and arithmetically averaging them.
  • the optically anisotropic layer in the first transfer film includes a ⁇ /2 plate and a ⁇ /4 plate from the first temporary support side.
  • a ⁇ /2 plate is an optically anisotropic film in which the in-plane retardation Re( ⁇ ) at a specific wavelength ⁇ nm satisfies Re( ⁇ ) ⁇ /2.
  • This formula should be achieved at any wavelength (eg, 550 nm) in the visible light region.
  • the in-plane retardation Re(550) at a wavelength of 550 nm preferably satisfies the following relationship.
  • a ⁇ /4 plate is a plate that has the function of converting linearly polarized light of a specific wavelength into circularly polarized light (or circularly polarized light into linearly polarized light). More specifically, the plate exhibits an in-plane retardation Re of ⁇ /4 (or an odd multiple thereof) at a predetermined wavelength ⁇ nm.
  • the in-plane retardation (Re (550)) of the ⁇ / 4 plate at a wavelength of 550 nm may have an error of about 25 nm around the ideal value (137.5 nm), for example, 110 to 160 nm. It is preferably from 120 to 150 nm, more preferably from 120 to 150 nm.
  • the ⁇ /2 plate and the ⁇ /4 plate are preferably layers formed by fixing a liquid crystal compound having a polymerizable group by polymerization.
  • the angle formed by the in-plane slow axis of the ⁇ /2 plate and the in-plane slow axis of the ⁇ /4 plate is not particularly limited, the polarizing plate obtained by the production method of the present invention was applied to an organic electroluminescence display device.
  • the angle is preferably from 50 to 70°, more preferably from 55 to 65°, in that the anti-reflection function at the time is more excellent.
  • the optically anisotropic layer in the first transfer film is a layer obtained by fixing an A plate and a liquid crystal compound twisted along a helical axis extending in the thickness direction from the first temporary support side. (hereinafter also referred to as a twisted alignment layer).
  • a preferred aspect of the A plate is the same as the A plate described in Requirement 1 above.
  • the twist angle of the liquid crystal compound in the twisted alignment layer is not particularly limited, and is often more than 0° and 360° or less. It is preferably within the range of 80 ⁇ 30 ° (within the range of 50 to 110 °), and within the range of 80 ⁇ 20 ° (within the range of 60 to 100 ° ) is more preferred.
  • the torsion angle is measured using an AxoScan (polarimeter) device manufactured by Axometrics using the company's device analysis software.
  • the twisted orientation of the liquid crystal compound means that the liquid crystal compound is twisted from one main surface to the other main surface of the twisted orientation layer about the thickness direction of the twisted orientation layer.
  • the orientation direction (in-plane slow axis direction) of the liquid crystal compound differs depending on the position in the thickness direction of the twisted orientation layer.
  • the product ⁇ nd of the refractive index anisotropy ⁇ n of the twisted alignment layer at a wavelength of 550 nm and the thickness d of the twisted alignment layer is not particularly limited
  • the polarizing plate obtained by the manufacturing method of the present invention is applied to an organic electroluminescence display device.
  • the thickness is preferably from 100 to 240 nm, more preferably from 140 to 200 nm, from the viewpoint that the antireflection function is more excellent when the thickness is reduced.
  • the above ⁇ nd is measured using an AxoScan (polarimeter) device manufactured by Axometrics using the company's device analysis software.
  • the thickness of the twisted orientation layer is not particularly limited, and is preferably 10 ⁇ m or less, more preferably 0.1 to 5.0 ⁇ m, even more preferably 0.3 to 2.0 ⁇ m.
  • the thickness of the twisted orientation layer intends the average thickness of the twisted orientation layer. The average thickness is determined by measuring the thickness of the twisted orientation layer at five or more arbitrary points and arithmetically averaging them.
  • the in-plane slow axis of the A plate and the in-plane slow axis on the surface of the twisted layer facing the A plate are parallel.
  • the optically anisotropic layer in the first transfer film includes a C plate and an A plate from the first temporary support side.
  • Preferred aspects of the C plate and A plate are the same as the C plate and A plate described in Requirement 1 above.
  • the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer on the first temporary support side in the first transfer film is equal to the fluorine atoms on the surface of the optically anisotropic layer opposite to the first temporary support side. and the total amount of silicon atoms. More specifically, in the embodiment shown in FIG. 1, the total amount of fluorine atoms and silicon atoms on the first surface 121 of the optically anisotropic layer 12 is greater than the total amount of fluorine atoms and silicon atoms on the second surface 122. is preferably small. In general, the presence of fluorine atoms and silicon on a surface affects the adhesion of that surface to other members.
  • the optically anisotropic layer 12 and the polarizer 16 are formed on the first surface 121 side of the optically anisotropic layer 12 as shown in FIG.
  • the adhesion between the two is more excellent.
  • Methods for measuring the content of fluorine atoms and silicon atoms on the surface include XPS (ESCA).
  • the method for producing the optically anisotropic layer as described above is not particularly limited, but examples include a method for producing an optically anisotropic layer using a composition containing a leveling agent containing fluorine atoms or silicon atoms.
  • the optically anisotropic layer is often formed by applying a composition containing a liquid crystal compound, as described later.
  • the composition often contains a leveling agent containing fluorine atoms or silicon atoms to improve coatability.
  • the optically anisotropic layer is a layer formed using a liquid crystal compound (e.g., rod-like liquid crystal compound or discotic liquid crystal compound), and its manufacturing method is not particularly limited.
  • a liquid crystal compound e.g., rod-like liquid crystal compound or discotic liquid crystal compound
  • a method using a composition containing a rod-like liquid crystal compound having a functional group and a discotic liquid crystal compound having a polymerizable group (hereinafter also simply referred to as "polymerizable liquid crystal composition”) is preferred. The method using the polymerizable liquid crystal composition will be described in detail below.
  • the polymerizable liquid crystal composition contains a liquid crystal compound having a polymerizable group.
  • Liquid crystal compounds include rod-like liquid crystal compounds and discotic liquid crystal compounds as described above.
  • the polymerizable liquid crystal composition may contain components other than the liquid crystal compound having a polymerizable group.
  • Other components include a polymerization initiator.
  • the polymerization initiator to be used is selected according to the type of polymerization reaction, and examples thereof include thermal polymerization initiators and photopolymerization initiators.
  • the content of the polymerization initiator in the polymerizable liquid crystal composition is preferably 0.01 to 20% by mass, more preferably 0.5 to 10% by mass, based on the total solid content of the composition.
  • the solid content means a component capable of forming an optically anisotropic layer from which the solvent has been removed.
  • the polymerizable liquid crystal composition may contain polymerizable monomers other than the liquid crystal compound having a polymerizable group.
  • Polymerizable monomers include radically polymerizable or cationically polymerizable compounds.
  • As the polymerizable monomer a monofunctional radically polymerizable monomer or a polyfunctional radically polymerizable monomer is preferable, and a polyfunctional radically polymerizable monomer is more preferable.
  • the content of the polymerizable monomer in the polymerizable liquid crystal composition is preferably 1 to 50% by mass, more preferably 2 to 30% by mass, based on the total mass of the liquid crystal compound.
  • the polymerizable liquid crystal composition preferably contains a chiral agent.
  • the chiral agent is added to twist the liquid crystal compound, but of course, if the liquid crystal compound has an asymmetric carbon in the molecule and is a compound exhibiting optical activity, the addition of the chiral agent is unnecessary. be. Moreover, addition of a chiral agent may not be necessary depending on the production method and twist angle. There are no particular restrictions on the structure of the chiral agent as long as it is compatible with the liquid crystal compound used in combination.
  • Any known chiral agent (for example, described in "Liquid Crystal Device Handbook” edited by the Japan Society for the Promotion of Science 142nd Committee, Chapter 3, Section 4-3, Chiral Agents for TN and STN, page 199, 1989) can be done.
  • the amount of the chiral agent used is not particularly limited, and is adjusted so as to achieve the twist angle described above.
  • the polymerizable liquid crystal composition preferably contains an alignment control agent (vertical alignment agent, horizontal alignment agent).
  • alignment control agent vertical alignment agent, horizontal alignment agent
  • a known compound can be used as the alignment control agent.
  • the polymerizable liquid crystal composition may contain a leveling agent, and the leveling agent preferably contains a fluorine atom or a silicon atom. That is, the leveling agent is preferably a fluorine-based leveling agent or a silicon-based leveling agent, more preferably a fluorine-based leveling agent.
  • leveling agent examples include the descriptions in paragraphs [0079] to [0102] of JP-A-2007-069471, compounds represented by the general formula (I) described in JP-A-2013-047204, JP-A Compound represented by the general formula (I) described in 2012-211306, liquid crystal alignment accelerator represented by the general formula (I) described in JP-A-2002-129162, JP-A-2005-099248 and compounds represented by general formula (I), general formula (II) or general formula (III) described in .
  • the content of the leveling agent in the polymerizable liquid crystal composition is preferably 0.01 to 5% by mass, more preferably 0.05 to 2% by mass, based on the total solid content in the polymerizable liquid crystal composition.
  • a method for producing an optically anisotropic layer a method of applying a polymerizable liquid crystal composition to form a coating film, applying an alignment treatment to the coating film to orient the polymerizable liquid crystal compound, and performing a curing treatment. is mentioned.
  • the object to which the polymerizable liquid crystal composition is applied is not particularly limited, and examples thereof include the above-described first temporary support.
  • the object to which the polymerizable liquid crystal composition is applied must be subjected to a rubbing treatment or a photo-alignment film. may contain
  • the coating method of the polymerizable liquid crystal composition includes curtain coating method, dip coating method, spin coating method, print coating method, spray coating method, slot coating method, roll coating method, slide coating method, blade coating method and gravure coating method. , and wire bar methods.
  • the formed coating film is subjected to alignment treatment to align the polymerizable liquid crystal compound in the coating film.
  • the orientation treatment can be performed by drying the coating film at room temperature or by heating the coating film.
  • the liquid crystal phase formed by alignment treatment can generally be caused to transition by a change in temperature or pressure.
  • the transition can also be achieved by changing the composition ratio such as the amount of solvent.
  • the conditions for heating the coating film are not particularly limited, but the heating temperature is preferably 50 to 250° C., more preferably 50 to 150° C., and the heating time is preferably 10 seconds to 10 minutes.
  • the coating film may be cooled, if necessary, before the curing treatment (light irradiation treatment) to be described later.
  • the cooling temperature is preferably 20 to 200°C, more preferably 30 to 150°C.
  • the coating film in which the polymerizable liquid crystal compound is oriented is subjected to a curing treatment.
  • the obtained optically anisotropic layer contains a cured product of a polymerizable liquid crystal compound.
  • the method of curing treatment performed on the coating film in which the polymerizable liquid crystal compound is oriented includes light irradiation treatment and heat treatment. Among them, light irradiation treatment is preferable, and ultraviolet irradiation treatment is more preferable, from the viewpoint of production aptitude.
  • the irradiation conditions for the light irradiation treatment are not particularly limited, but an irradiation amount of 50 to 1000 mJ/cm 2 is preferable.
  • the atmosphere during the light irradiation treatment is not particularly limited, a nitrogen atmosphere is preferred.
  • the method for producing an optically anisotropic layer containing a plurality of layers containing liquid crystal compounds with different alignment states along the thickness direction is not particularly limited. You may Alternatively, after the composition for forming an optically anisotropic layer is applied to form an optically anisotropic layer, the composition for forming an optically anisotropic layer is separately applied on the formed optically anisotropic layer, and another composition is applied. may be a method of forming an optically anisotropic layer.
  • members other than the temporary support and the optically anisotropic layer may be used.
  • an adhesion layer may be used.
  • the adhesion layer may be provided between the optically anisotropic layer and the second temporary support when bonding the first transfer film and the second temporary support.
  • the adhesion layer includes known pressure-sensitive adhesive layers and adhesive layers.
  • the acrylic pressure-sensitive adhesive refers to a pressure-sensitive adhesive containing a polymer of (meth)acrylic monomers ((meth)acrylic polymer).
  • adhesives examples include urethane resin adhesives, polyester adhesives, acrylic resin adhesives, ethylene vinyl acetate resin adhesives, polyvinyl alcohol adhesives, polyamide adhesives, and silicone adhesives.
  • the adhesive layer may be a layer obtained by curing an adhesive that is cured by irradiation with light (eg, ultraviolet light (UV)) or heating.
  • the method of forming the adhesion layer is not particularly limited, but for example, when using a UV-curable adhesive, the UV-curable adhesive is applied on the second temporary support to form a coating film, and the first transfer film is formed.
  • a method of obtaining an adhesive layer by applying UV irradiation to the coating film to cure the coating film is exemplified.
  • the method of bonding a sheet-like adhesive layer together on a 2nd temporary support body, and also bonding together a 1st transfer film on an adhesive layer is mentioned.
  • the thickness of the adhesion layer is not particularly limited, it is preferably 0.5 to 50 ⁇ m, more preferably 1 to 30 ⁇ m, from the viewpoint of thinning.
  • first, the first transfer film and the second temporary support are laminated so that the optically anisotropic layer in the first transfer film faces the second temporary support.
  • the lamination method is not particularly limited, and it is preferable to pressure-bond the first transfer film and the second temporary support.
  • the method of pressing is not particularly limited, and includes known transfer methods and lamination methods. In addition, when bonding, you may bond a 1st transfer film and a 2nd temporary support body via an adhesion layer.
  • the first temporary support is peeled off from the obtained laminate, the optically anisotropic layer is transferred onto the second temporary support, and the optically anisotropic layer and the second temporary support are included.
  • a second transfer film is obtained.
  • ⁇ Second step> In the second step, the second transfer film and the polarizer are attached so that the optically anisotropic layer in the second transfer film faces the polarizer, the second temporary support is peeled off, and the polarizer In this step, an optically anisotropic layer is transferred thereon to obtain a polarizing plate.
  • the members used in this process will be described in detail, and then the procedure of the process will be described in detail.
  • the polarizer may be any member that has a function of converting natural light into specific linearly polarized light, and examples thereof include absorption polarizers.
  • absorption polarizers As the absorbing polarizer, an iodine-based polarizer, a dye-based polarizer using a dichroic dye, a polyene-based polarizer, or the like is used.
  • Iodine-based polarizers and dye-based polarizers include coated polarizers and stretched polarizers, and both can be applied.
  • Japanese Patent No. 5048120 Japanese Patent No.
  • Reflective polarizers include, for example, a polarizer in which thin films having different birefringences are laminated, a wire grid polarizer, and a polarizer in which a cholesteric liquid crystal having a selective reflection region and a quarter-wave plate are combined.
  • polyvinyl alcohol-based resins (polymers containing —CH 2 —CHOH— as repeating units, in particular, at least one selected from the group consisting of polyvinyl alcohol and ethylene-vinyl alcohol copolymers, in terms of better adhesion) 1) are preferred.
  • a protective film may be arranged on one side or both sides of the polarizer. That is, a polarizer with a protective film may be used. A well-known resin film is mentioned as a protective film.
  • the thickness of the polarizer is not particularly limited, preferably 3 to 60 ⁇ m, more preferably 5 to 30 ⁇ m.
  • An adhesion layer may be used in the second step.
  • the adhesion layer may be provided between the optically anisotropic layer and the polarizer when bonding the second transfer film and the polarizer.
  • the mode of the adhesion layer is as described above.
  • the second transfer film and the polarizer are bonded so that the optically anisotropic layer in the second transfer film faces the polarizer.
  • the bonding method is not particularly limited, and it is preferable to press the second transfer film and the polarizer together.
  • the method of pressing is not particularly limited, and includes known transfer methods and lamination methods.
  • the second temporary support is peeled off from the obtained laminate, and the optically anisotropic layer is transferred onto the polarizer to produce a polarizing plate.
  • the polarizing plate of the present invention can be manufactured by the manufacturing method described above.
  • the polarizing plate of the invention includes the optically anisotropic layer and the polarizer described above.
  • the mode of each member is as described above.
  • the polarizing plate may contain layers other than the optically anisotropic layer and the polarizer.
  • the polarizing plate may contain an adhesion layer between the optically anisotropic layer and the polarizer.
  • the mode of the adhesion layer is as described above.
  • a polarizing plate having a polarizer, an adhesion layer, and an optically anisotropic layer formed using a liquid crystal compound in this order wherein the adhesion layer and the optical In direct contact with the anisotropic layer, the alignment direction of the liquid crystal compound on the surface of the optically anisotropic layer on the adhesion layer side and the alignment of the liquid crystal compound on the surface of the optically anisotropic layer opposite to the adhesion layer side different from the direction, the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer on the adhesion layer side is the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer opposite to the adhesion layer side
  • a polarizing plate is included, which is smaller than the amount.
  • the adhesion layer and the optically anisotropic layer are in direct contact with each other without a substrate, so that the thickness of the polarizing plate itself is small. Further, the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer facing the adhesion layer is greater than the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer opposite to the adhesion layer side. Since it is small, the adhesion between the adhesion layer and the optically anisotropic layer is also excellent, and as a result, the adhesion between the polarizer and the optically anisotropic layer is excellent.
  • the total amount of fluorine atoms and silicon atoms on the surface of the optically anisotropic layer on the first temporary support side is obtained by carrying out the above-described production method using a first transfer film having a total amount of fluorine atoms and silicon atoms smaller than the total amount of fluorine atoms and silicon atoms on the surface of the
  • the optically anisotropic layer preferably includes a plurality of layers containing liquid crystal compounds with different alignment states along the thickness direction, as described above. More specifically, the optically anisotropic layer in the polarizing plate of the invention is preferably an optically anisotropic layer that satisfies requirements 5 to 8 below.
  • Requirement 5 The optically anisotropic layer includes an A plate and a C plate from the adhesion layer side.
  • Requirement 6 The optically anisotropic layer includes a ⁇ /2 plate and a ⁇ /4 plate from the adhesion layer side.
  • the optically anisotropic layer includes, from the side of the adhesive layer, an A plate and a layer in which a liquid crystal compound twisted and aligned along a helical axis extending in the thickness direction is fixed.
  • Requirement 8 The optically anisotropic layer includes the adhesion layer side, the C plate and the A plate.
  • a polarizing plate containing an optically anisotropic layer that satisfies Requirement 5 above is obtained by carrying out the method for producing a polarizing plate of the present invention using the first transfer film containing an optically anisotropic layer that satisfies Requirement 1 above. be done.
  • Preferred aspects of the A plate and C plate described in Requirement 5 are the same as the preferred aspects of the A plate and C plate described in Requirement 1.
  • a polarizing plate containing an optically anisotropic layer that satisfies Requirement 6 above is obtained by carrying out the method for producing a polarizing plate of the present invention using the first transfer film containing an optically anisotropic layer that satisfies Requirement 2 above. be done.
  • a polarizing plate containing an optically anisotropic layer that satisfies Requirement 7 above is obtained by carrying out the method for producing a polarizing plate of the present invention using the first transfer film containing an optically anisotropic layer that satisfies Requirement 3 above. be done.
  • a preferred embodiment of the A plate described in Requirement 7 and the layer formed by fixing the liquid crystal compound twisted along the helical axis extending in the thickness direction is the A plate described in Requirement 3 and the spiral extending in the thickness direction This is the same as the preferred embodiment of the layer in which the liquid crystal compound twisted along the axis is fixed.
  • a polarizing plate containing an optically anisotropic layer that satisfies Requirement 8 above is obtained by carrying out the method for producing a polarizing plate of the present invention using the first transfer film containing an optically anisotropic layer that satisfies Requirement 4 above. be done.
  • Preferred aspects of the C plate and A plate described in Requirement 8 are the same as the preferred aspects of the C plate and A plate described in Requirement 4.
  • the angle formed by the in-plane slow axis of the A plate in the optically anisotropic layer and the absorption axis of the polarizer is not particularly limited.
  • the angle is preferably in the range of 45° ⁇ 10° from the viewpoint of better antireflection function when the polarizing plate is applied to an organic electroluminescence display device.
  • the angle formed by the in-plane slow axis of the ⁇ /2 plate in the optically anisotropic layer and the absorption axis of the polarizer is not particularly limited.
  • the range of 75° ⁇ 10° is preferable in that the antireflection function is more excellent when the polarizing plate of the invention is applied to an organic electroluminescence display device.
  • the angle formed by the in-plane slow axis of the A plate in the optically anisotropic layer and the absorption axis of the polarizer is not particularly limited.
  • the range of 10° ⁇ 10° is preferable in that the antireflection function when the polarizing plate is applied to an organic electroluminescence display device is more excellent.
  • the angle formed by the in-plane slow axis of the A plate in the optically anisotropic layer and the absorption axis of the polarizer is not particularly limited.
  • the range of 0° ⁇ 10° is preferable from the viewpoint of better display performance when the polarizing plate is applied as a polarizer on the viewing side of a liquid crystal display device.
  • the thickness of the polarizing plate is not particularly limited, it is preferably 100 ⁇ m or less, more preferably 80 ⁇ m or less, from the viewpoint of thinning. Although the lower limit is not particularly limited, it is often 30 ⁇ m or more.
  • the polarizing plate of the present invention can be applied to various uses.
  • the polarizing plate of the present invention can be applied to an organic electroluminescence (hereinafter abbreviated as "EL") display device to function as an antireflection film.
  • EL organic electroluminescence
  • the present invention also relates to an organic EL display device including an organic EL display element and the polarizing plate arranged on the organic EL display element.
  • the polarizing plate is arranged so that the polarizer is on the viewing side.
  • a well-known element is mentioned as an organic EL display element.
  • the method for producing the organic EL display device is not particularly limited, but the optically anisotropic layer in the above-mentioned polarizing plate (in particular, the polarizer produced by the method for producing a polarizer of the present invention) faces the organic EL display element.
  • a manufacturing method having a step of bonding the polarizing plate and the organic EL display is preferable. When bonding the polarizing plate and the organic EL display element, they may be bonded via an adhesion layer.
  • the polarizing plate of the present invention can be used as a polarizing plate in a liquid crystal display device. More specifically, the present invention relates to a liquid crystal display device including two polarizers and a liquid crystal cell arranged between the two polarizers, and It also relates to a liquid crystal display device containing the polarizing plate of the present invention as a polarizing plate.
  • the liquid crystal cell used in the liquid crystal display device is preferably in VA (Vertical Alignment) mode, OCB (Optically Compensated Bend) mode, IPS (In-Plane-Switching) mode, or TN (Twisted Nematic) mode. .
  • VA Vertical Alignment
  • OCB Optically Compensated Bend
  • IPS In-Plane-Switching
  • TN Transmission Nematic
  • Example 1 (Preparation of first transfer film) Polymer A (12.0 parts by mass) below and Thermal Acid Generator A (0.6 parts by mass) below were added to a mixed solution containing butyl acetate (74 parts by mass) and methyl ethyl ketone (18 parts by mass). Then, composition A1 for photo-alignment film was prepared.
  • Polymer A (weight average molecular weight: 40,000, the numerical values in the following formula indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the prepared photo-alignment film composition A1 is coated on a cellulose polymer film (TG40, manufactured by Fujifilm) with a #3.0 wire bar, dried on a hot plate at 80° C. for 5 minutes, and then removed with a solvent. was removed to form a photoisomerizable composition layer having a thickness of 0.5 ⁇ m.
  • the obtained photoisomerizable composition layer was irradiated with UV light (ultra-high pressure mercury lamp; UL750; manufactured by HOYA) at 7.9 mJ/cm 2 (wavelength: 313 nm) through a wire grid polarizer, and the thickness was reduced to 0.9 mJ/cm 2 .
  • a 5 ⁇ m-thick photo-alignment film A1 was formed to obtain a first temporary support.
  • a polymerizable liquid crystal composition B1 having the following composition was prepared.
  • Leveling agent A (The numerical values in the following formula indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the prepared polymerizable liquid crystal composition B1 was applied onto the prepared photo-alignment film A1 with a #7.0 wire bar to form a composition layer. After once heating the formed composition layer to 120° C. on a hot plate, it was cooled to 60° C. to stabilize the orientation. After that, in a nitrogen atmosphere (oxygen concentration of less than 100 volume ppm) using an ultra-high pressure mercury lamp, the film temperature was kept at 60 ° C. After the first UV irradiation (80 mJ / cm 2 ), the film temperature was kept at 100 ° C. The orientation was fixed by the second ultraviolet irradiation (300 mJ/cm 2 ) to form an optically anisotropic layer B1 with a thickness of 2.8 ⁇ m.
  • the optically anisotropic layer B1 was a positive A plate.
  • the in-plane retardation Re(550) of the optically anisotropic layer B1 at a wavelength of 550 nm was 142 nm, and the angle of the in-plane slow axis with respect to the film width direction was 135°.
  • the optically anisotropic layer B1 disposed on the cellulose-based polymer film is observed from the side of the optically anisotropic layer B1, the above angle is measured counterclockwise with respect to the width direction of the film (0°). Angle expressed as a positive value.
  • a polymerizable liquid crystal composition C1 having the following composition was prepared.
  • ⁇ Polymerizable liquid crystal composition C1 ⁇ - Rod-shaped liquid crystal compound A 21.0 parts by mass - Rod-shaped liquid crystal compound B 21.0 parts by mass - Rod-shaped liquid crystal compound C 20.0 parts by mass - Rod-shaped liquid crystal compound D 19.0 parts by mass - Rod-shaped liquid crystal compound E below 19.0 parts by mass of the above compound A 15.0 parts by mass of the following compound B 3.0 parts by mass of the following compound C 8.0 parts by mass of the above photopolymerization initiator A 3.0 parts by mass of the following leveling agent B 0 .3 parts by mass, 0.3 parts by mass of leveling agent C below, 232.8 parts by mass of cyclopentanone, 60.5 parts by mass of methyl ethyl ketone, and 9.1 parts by mass of methanol ⁇ ⁇
  • Leveling agent B (The numerical values in the formula below indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • Leveling agent C (The numerical values in the following formula indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the surface of the prepared optically anisotropic layer B1 was subjected to corona treatment at a discharge amount of 150 W ⁇ min/m 2 , and the previously prepared polymerizable liquid crystal composition C1 was applied to the corona-treated surface with a wire bar of #3.0. to form a composition layer. Then, it was heated with hot air at 85° C. for 60 seconds to dry the solvent in the composition layer and to ripen the orientation of the liquid crystal compound. UV irradiation (150 mJ/cm 2 ) was performed at 50° C.
  • the optically anisotropic layer C1 was a positive C plate and had a retardation Rth(550) in the thickness direction of ⁇ 50 nm at a wavelength of 550 nm.
  • a support with an adhesive layer (E-MASK RP207, manufactured by Nitto Denko Co., Ltd.) as a second temporary support is temporarily peeled off on the surface of the first transfer film D1 opposite to the first temporary support. dressed. After that, the first temporary support was peeled off from the optically anisotropic layer B1 to produce a second transfer film E1.
  • E-MASK RP207 manufactured by Nitto Denko Co., Ltd.
  • Example 2 An organic EL display device was produced in the same manner as in Example 1, except that the polarizing plate F1 was changed to the polarizing plate F2 produced by the following method.
  • the protective film-attached polarizer on which the coating film is disposed and the second transfer film E1 prepared above are placed so that the optically anisotropic layer B1 side is the TAC film side of the protective film-attached polarizer, and The layers were laminated so that the angle between the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B1 was 45°.
  • one side was irradiated with 800 mJ/cm 2 of UV (ultraviolet rays) at 50°C, followed by drying with hot air at 70°C for 3 minutes to form an adhesion layer (thickness: 2 ⁇ m). ) was formed.
  • the second temporary support support with pressure-sensitive adhesive layer
  • Example 3 Organic EL display in the same manner as in Example 1 except that the second transfer film E1 was changed to a second transfer film E2 prepared by the following method, and the polarizing plate F1 was changed to a polarizing plate F3 prepared by the following method. A device was fabricated.
  • a support with an adhesive layer as a second temporary support (SK2057 with protective film, manufactured by Soken Chemical Co., Ltd.) is temporarily peeled off on the surface opposite to the first temporary support in the first transfer film D1 produced. dressed. After that, the first temporary support was peeled off from the optically anisotropic layer B1 to prepare a second transfer film E2.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the second transfer film E2 prepared above is placed on the TAC film side of the prepared polarizer with a protective film via the pressure-sensitive adhesive layer B described in Example 4 of JP-A-2021-015294 as an optically anisotropic layer.
  • the B1 side is the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B1 is 45°. rice field.
  • the second temporary support (protective film only) was peeled off from the optically anisotropic layer C1 to prepare a polarizing plate F3 having an adhesive layer SK2057 as the lowermost layer.
  • Example 4> (Preparation of first transfer film) A long cellulose acylate film (TD80UL, Fuji Film Co., Ltd.) was passed through a dielectric heating roll at a temperature of 60°C to raise the film surface temperature to 40°C. An alkaline solution of the composition was applied using a bar coater at a coating amount of 14 ml/m 2 and transported for 10 seconds under a steam type far-infrared heater manufactured by Noritake Co., Ltd. heated to 110°C. Subsequently, using the same bar coater, pure water was applied to the film at 3 ml/m 2 .
  • composition A2 for an alignment film having the following composition was continuously applied with a #14 wire bar. Next, the coating film was dried with hot air at 60° C. for 60 seconds and then with hot air at 100° C. for 120 seconds to obtain a coating film (thickness: 0.5 ⁇ m).
  • Alignment film composition A2 The following polyvinyl alcohol 10 parts by mass Water 371 parts by mass Methanol 119 parts by mass Glutaraldehyde (crosslinking agent) 0.5 parts by mass Citric acid ester (manufactured by Sankyo Chemical Co., Ltd.) 0.175 parts by mass ⁇
  • Polyvinyl alcohol (The numbers in the formula below indicate the content (mass%) of each repeating unit with respect to all repeating units in the polymer.)
  • a polymerizable liquid crystal composition B2 having the following composition was prepared.
  • ⁇ Polymerizable liquid crystal composition B2 ⁇ Discotic liquid crystal F below 80 parts by mass Discotic liquid crystal G below 20 parts by mass Compound D below 0.55 parts by mass Leveling agent D below 0.21 parts by mass Ethylene oxide-modified trimethylolpropane triacrylate 5 parts by mass Photopolymerization initiator B ( Irgacure 907, manufactured by BASF) 3.0 parts by mass Compound E below 1.2 parts by mass Methyl ethyl ketone 200 parts by mass ⁇ ⁇
  • Leveling agent D (The numerical values in the following formula indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • Compound E (The numerical values in the formula below indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the surface of the coating film prepared above was continuously subjected to rubbing treatment to obtain a rubbed alignment film A2.
  • the longitudinal direction of the long film and the conveying direction were parallel, and the angle formed by the longitudinal direction of the film and the rotation axis of the rubbing roller was 72.5° (the width direction of the film was 0°, the longitudinal direction of the film is 90°, and the rotation axis of the rubbing roller is 17.5° when the clockwise direction is represented by a positive value with respect to the film width direction observed from the coating film side).
  • the polymerizable liquid crystal composition B2 was applied onto the rubbed surface using a Gieser coating machine. Next, after heating and aging at a film surface temperature of 128° C.
  • optically anisotropic layer B2 having a thickness of 1.8 ⁇ m was formed by fixing the orientation state by irradiating to a thickness of 1.8 ⁇ m.
  • the in-plane slow axis direction was perpendicular to the rubbing direction, and the discotic liquid crystal was vertically aligned.
  • the optically anisotropic layer B2 was a negative A plate.
  • the in-plane retardation Re(550) of the optically anisotropic layer B2 at a wavelength of 550 nm was 234 nm, and the angle of the in-plane slow axis with respect to the film width direction was 162.5°.
  • the optically anisotropic layer B2 disposed on the cellulose-based polymer film is observed from the side of the optically anisotropic layer B2, the above angle is measured counterclockwise with respect to the width direction of the film (0°). Angle expressed as a positive value.
  • a polymerizable liquid crystal composition C2 having the following composition was prepared.
  • Mixture H of rod-like liquid crystal compounds (hereinafter referred to as a mixture of compounds)
  • Leveling agent E (The numbers in the formula below indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the surface of the optically anisotropic layer B2 was continuously rubbed.
  • the longitudinal direction of the long film and the conveying direction were parallel, and the angle formed by the longitudinal direction of the film and the rotation axis of the rubbing roller was 77.5° (the width direction of the film was 0°, the longitudinal direction of the film is 90°, and the rotation axis of the rubbing roller is ⁇ 12.5° when the clockwise direction with respect to the film width direction observed from the alignment film side is represented by a positive value).
  • the polymerizable liquid crystal composition C2 was applied onto the rubbed surface using a Gieser coating machine. Next, the film is heated and aged at a film surface temperature of 40° C.
  • optically anisotropic layer C2 having a thickness of 1.0 ⁇ m was formed to obtain a first transfer film D2.
  • the in-plane slow axis direction was parallel to the rubbing direction, and the rod-like liquid crystal was horizontally aligned.
  • the optically anisotropic layer C2 was a positive A plate.
  • the in-plane retardation Re(550) of the optically anisotropic layer C2 at a wavelength of 550 nm was 116 nm, and the angle of the in-plane slow axis with respect to the film width direction was 102.5°.
  • the angle is measured counterclockwise with the width direction of the film as a reference (0°). It is an angle in which the circumference is expressed as a positive value.
  • a support with an adhesive layer (E-MASK RP207, manufactured by Nitto Denko Co., Ltd.) as a second temporary support is temporarily peeled off on the surface of the first transfer film D2 opposite to the first temporary support. dressed. After that, the first temporary support was peeled off from the optically anisotropic layer B2 to produce a second transfer film E3.
  • E-MASK RP207 manufactured by Nitto Denko Co., Ltd.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the second transfer film E3 prepared above is placed on the TAC film side of the prepared polarizer with a protective film via the pressure-sensitive adhesive layer B described in Example 4 of JP-A-2021-015294, as an optically anisotropic layer.
  • the B2 side is the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B2 is 72.5°. pasted together.
  • the second temporary support (support with adhesive layer) was peeled off from the optically anisotropic layer C2 to prepare a long polarizing plate F4 (width: 1300 mm).
  • Example 5> (Preparation of first transfer film) A cellulose-based polymer film (TG40, manufactured by FUJIFILM Corporation) as a first temporary support was continuously rubbed. At this time, the longitudinal direction of the long film was parallel to the conveying direction, and the angle formed by the longitudinal direction of the film (conveying direction) and the rotation axis of the rubbing roller was 80.7°. The longitudinal direction (conveyance direction) of the film is 90°, and the width direction of the cellulose polymer film observed from the rubbing-treated surface side of the cellulose polymer film is the reference (0°), and the clockwise direction is a positive value. In other words, the rotation axis of the rubbing roller was 9.3°. In other words, the position of the rotation axis of the rubbing roller was a position rotated counterclockwise by 80.7° with respect to the longitudinal direction of the cellulose-based polymer film.
  • TG40 manufactured by FUJIFILM Corporation
  • a polymerizable liquid crystal composition C3 having the following composition was prepared and applied onto the rubbed film using a Gieser coater to form a composition layer.
  • the resulting composition layer was then heated at 100° C. for 80 seconds. This heating oriented the rod-like liquid crystal compound in the composition layer in a predetermined direction.
  • the composition layer was irradiated with ultraviolet rays using a 365 nm LED lamp (manufactured by Acroedge Co., Ltd.) at 40° C. in air containing oxygen (oxygen concentration: about 20% by volume). At this time, the maximum in-plane dose was 13.2 mJ/cm 2 and the minimum was 12.9 mJ/cm 2 .
  • the obtained composition layer was heated at 90° C. for 10 seconds. Then, in a nitrogen atmosphere, the composition layer was irradiated with ultraviolet rays using a metal halide lamp (manufactured by Eye Graphics Co., Ltd.) at 55° C. (irradiation dose: 500 mJ/cm 2 ) to determine the alignment state of the liquid crystal compound. was fixed to form an optically anisotropic layer C3 to prepare a first transfer film D3.
  • a metal halide lamp manufactured by Eye Graphics Co., Ltd.
  • Polymer B (The numerical values in the formula below indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • Leveling agent F (The numerical values in the following formula indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • the optically anisotropic layer C3 prepared above was cut parallel to the rubbing direction, and the optically anisotropic layer was observed from the cross-sectional direction with a polarizing microscope.
  • the optically anisotropic layer C3 is composed of two layers exhibiting different optical anisotropies. It is a layer formed by fixing a homogeneously aligned liquid crystal compound of 1310 nm, and the layer (first layer) on the air side in the optically anisotropic layer has a thickness (d1) of 1390 nm and liquid crystal twisted with the thickness direction as the helical axis. It was a layer in which a compound was fixed.
  • optical properties of the optically anisotropic layer C3 were determined using AxoScan from Axometrics and analysis software (Multi-Layer Analysis) from Axometrics.
  • the product ( ⁇ n2d2) of ⁇ n2 and thickness d2 of the second layer at a wavelength of 550 nm is 173 nm
  • the twist angle of the liquid crystal compound is 0°
  • the orientation axis angle of the liquid crystal compound with respect to the width direction of the film is such that the side in contact with the support is 80.7°, and the side in contact with the first layer was 80.7°.
  • the product ( ⁇ n1d1) of ⁇ n1 and thickness d1 of the first layer at a wavelength of 550 nm was 184 nm
  • the twist angle of the liquid crystal compound was 75.1°
  • the orientation axis angle of the liquid crystal compound with respect to the width direction of the film was It was 80.7° on the side in contact with the two layers and 5.6° on the air side.
  • the orientation axis angle of the liquid crystal compound contained in the optically anisotropic layer is clockwise (rightward) when the substrate is observed from the surface side of the optically anisotropic layer with the width direction of the film as a reference of 0°. is indicated as negative, and counterclockwise (counterclockwise) as positive.
  • the twisted structure of the liquid crystal compound is obtained by observing the substrate from the surface side of the optically anisotropic layer, and based on the orientation direction of the liquid crystal compound on the surface side (front side), the liquid crystal on the substrate side (back side).
  • the alignment direction of the compound is clockwise (right), it is indicated as negative, and when it is counterclockwise (left), it is indicated as positive.
  • a support with an adhesive layer (E-MASK RP207, manufactured by Nitto Denko Co., Ltd.) as a second temporary support is temporarily peeled off on the surface opposite to the first temporary support in the prepared first transfer film D3. dressed. After that, the first temporary support was peeled off from the optically anisotropic layer C3 to produce a second transfer film E4.
  • E-MASK RP207 manufactured by Nitto Denko Co., Ltd.
  • the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer C3 on the second layer side is such that the second layer side of C3 is on the TAC film side of the polarizer with a protective film. They were stuck together so that the angle would be 9.3°. After that, the second temporary support (support with adhesive layer) was peeled off from the optically anisotropic layer C3 to prepare a polarizing plate F5.
  • Example 6> (Preparation of first transfer film) A polymerizable liquid crystal composition B3 having the following composition was prepared.
  • Polymerizable liquid crystal composition B3 ⁇ 100 parts by mass of the above rod-shaped liquid crystal compound mixture H Acrylate monomer (A-400) 4.2 parts by mass 2.0 parts by mass of the following polymer C 1.9 parts by mass of the following compound H Photopolymerization initiator A 5 above .1 parts by mass Photoacid generator A below 3.0 parts by mass Polymer D below 0.8 parts by mass Methyl isobutyl ketone 374 parts by mass Ethyl propionate 94 parts by mass ⁇
  • Polymer C (The numbers in the formula below indicate the content (mass%) of each repeating unit with respect to all repeating units in the polymer.)
  • the prepared polymerizable liquid crystal composition B3 was coated on a cellulose polymer film (TG40, manufactured by Fujifilm Corporation) as a first temporary support with a #3.4 wire bar and heated at 70° C. for 2 minutes. , and an oxygen concentration of less than 100 ppm by volume. Then, it is annealed at 120° C. for 1 minute, and irradiated with 7.9 mJ/cm 2 (wavelength: 313 nm) of UV light (ultra-high pressure mercury lamp; UL750; manufactured by HOYA) through a wire grid polarizer at room temperature to provide an alignment function. was applied to form an optically anisotropic layer B3 having a thickness of 0.8 ⁇ m.
  • the optically anisotropic layer B3 was a positive C plate.
  • the thickness direction retardation Rth (550) of the optically anisotropic layer B3 was ⁇ 90 nm.
  • the polymerizable liquid crystal composition B1 was applied on the previously formed optically anisotropic layer B3 with a wire bar coater #7 to form a composition layer. After once heating the formed composition layer to 120° C. on a hot plate, it was cooled to 60° C. to stabilize the orientation. After that, in a nitrogen atmosphere (oxygen concentration of less than 100 volume ppm) using an ultra-high pressure mercury lamp, the film temperature was kept at 60 ° C. After the first UV irradiation (80 mJ / cm 2 ), the film temperature was kept at 100 ° C.
  • the alignment was fixed by the second ultraviolet irradiation (300 mJ/cm 2 ) to form an optically anisotropic layer B1 with a thickness of 2.8 ⁇ m, thereby producing a first transfer film D4.
  • the optically anisotropic layer B1 was a positive A plate.
  • the optically anisotropic layer B1 had an in-plane retardation Re(550) of 140 nm at a wavelength of 550 nm, and an angle of the in-plane slow axis with respect to the film width direction was 90°.
  • the angle is measured counterclockwise with the width direction of the film as a reference (0°) when the optically anisotropic layer B1 disposed on the optically anisotropic layer B3 is observed from the side of the optically anisotropic layer B1. It is an angle in which the circumference is expressed as a positive value.
  • a support with an adhesive layer as a second temporary support (E-MASK RP207, Nitto Denko Co., Ltd.) was temporarily attached in a releasable manner. After that, the first temporary support was peeled off from the second optically anisotropic layer B3 to produce a second transfer film E5.
  • Example 7 A liquid crystal display device was produced in the same manner as in Example 6, except that the polymerizable liquid crystal composition B1 was changed to the following polymerizable liquid crystal composition C4.
  • Leveling agent G (The numerical values in the formula below indicate the content (% by mass) of each repeating unit with respect to all repeating units in the polymer.)
  • Example 8 A liquid crystal display device was produced in the same manner as in Example 6, except that the polymerizable liquid crystal composition B1 was changed to the following polymerizable liquid crystal composition C5.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the first transfer film D1 prepared above is placed on the TAC film side of the prepared polarizer with a protective film via the adhesive layer B described in Example 4 of JP-A-2021-015294 as an optically anisotropic layer.
  • the C1 side was attached to the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B1 was 45°.
  • the first temporary support was peeled off from the second optically anisotropic layer B1 to produce a polarizing plate F9.
  • the polarizing plate on which the coating film is arranged and the first transfer film D1 prepared above are placed so that the optically anisotropic layer C1 side is the TAC film side of the polarizer with the protective film, and the absorption of the polarizer is They were bonded together so that the angle between the axis and the in-plane slow axis of the optically anisotropic layer B1 was 45°.
  • one side was irradiated with 800 mJ/cm 2 of UV (ultraviolet rays) at 50°C, followed by hot air drying at 70°C for 3 minutes to form an adhesive layer (thickness: 2 ⁇ m). ) was formed.
  • the first temporary support was peeled off from the second optically anisotropic layer B1 to produce a polarizing plate F10.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the first transfer film D2 prepared above is placed on the TAC film side of the prepared polarizer with a protective film via the pressure-sensitive adhesive layer B described in Example 4 of JP-A-2021-015294 as an optically anisotropic layer.
  • the C2 side is attached to the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B2 is 72.5°. rice field.
  • the first temporary support was peeled off from the second optically anisotropic layer B2 to produce a polarizing plate F12.
  • the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer C3 on the second layer side is 9.3° so that the C3 side is on the TAC film side of the polarizer with a protective film. It was pasted together so that it would be. Thereafter, the first temporary support was peeled off from the optically anisotropic layer C3 to produce a polarizing plate F13.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the first transfer film D3 prepared above is placed on the first temporary support side. is on the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer C3 on the second layer side is 9.3°. , and a polarizing plate F14 was produced.
  • Example 7 A liquid crystal display device was produced in the same manner as in Example 6, except that the polarizing plate F6 was changed to the polarizing plate F15 produced by the following method.
  • a polarizer with a protective film consisting of a norbornene-based resin film/polarizer/TAC film having a hard coat layer formed on one surface was produced.
  • the first transfer film D4 prepared above is placed on the TAC film side of the prepared polarizer with a protective film via the pressure-sensitive adhesive layer B described in Example 4 of JP-A-2021-015294 as an optically anisotropic layer.
  • the B1 side was the TAC film side of the polarizer with a protective film, and the angle formed by the absorption axis of the polarizer and the in-plane slow axis of the optically anisotropic layer B1 was 0°.
  • the first temporary support was peeled off from the second optically anisotropic layer B3 to produce a polarizing plate F15.
  • Adhesion between polarizer and optically anisotropic layer (adhesion)) Cellotape (registered trademark) (CT405AP-15, manufactured by Nichiban) was adhered to the polarizer side of the polarizing plate prepared above, and after rubbing back and forth five times with a roller, the Cellotape (registered trademark) was peeled off from the polarizing plate. Adhesion between the polarizer and the optically anisotropic layer was evaluated according to the following criteria. A: No peeling occurs between the polarizer and the optically anisotropic layer. B: Partial peeling occurs between the polarizer and the optically anisotropic layer.
  • the columns “Layer 1" to “Layer 5" show the order of typical layers in the polarizing plate.
  • “B1" to “B3” and “C1” to “C5" represent optically anisotropic layers B1 to B3 and optically anisotropic layers C1 to C5, respectively.
  • “slow axis angle” represents the angle of the in-plane slow axis on the polarizer side or panel side in each layer when the obtained polarizing plate is observed from the polarizer side, and the obtained polarized light With the width direction of the plate as the reference (0°), the counterclockwise direction is represented by a positive value.
  • the panel side means the organic EL display element side
  • the panel side means the liquid crystal cell side.
  • the surface of the optically anisotropic layer in the first transfer film on the side of the first temporary support corresponds to the surface of the optically anisotropic layer in the polarizing plate on the side of the polarizer. "A” was given when it was, and "B” was given when it was not.
  • the lamination direction of the optically anisotropic layer with respect to the polarizer can be adjusted to a predetermined direction.
  • the adhesion of the polarizing plate was poor.
  • the thickness of the polarizing plate was large.
  • REFERENCE SIGNS LIST 10 first temporary support 12, 12A optically anisotropic layer 14 second temporary support 16 polarizer 100 first transfer film 200 second transfer film 300 polarizing plate

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  • Nonlinear Science (AREA)
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  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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Abstract

La présente invention concerne : un procédé de production d'une nouvelle plaque polarisante ; une plaque de polarisation qui a une excellente adhérence entre un polariseur et une couche optiquement anisotrope, tout en ayant une épaisseur mince ; un procédé de production d'un dispositif d'affichage électroluminescent organique ; un dispositif d'affichage électroluminescent organique ; et un dispositif d'affichage à cristaux liquides. Un procédé de production d'une plaque de polarisation selon la présente invention comprend : une étape dans laquelle un premier film de transfert qui comprend un premier corps de support provisoire et une couche optiquement anisotrope, qui est disposée sur le premier corps de support provisoire et qui est formée d'un composé de cristaux liquides, et un second corps de support provisoire sont liés l'un à l'autre de telle sorte que la couche optiquement anisotrope dans le premier film de transfert fait face au second corps de support provisoire, et le premier corps de support provisoire est ensuite séparé de façon à transférer la couche optiquement anisotrope sur le second corps de support provisoire, ce qui permet d'obtenir un second film de transfert qui comprend la couche optiquement anisotrope et le second corps de support provisoire ; et une étape dans laquelle le second film de transfert et un polariseur sont liés l'un à l'autre de telle sorte que la couche optiquement anisotrope dans le second film de transfert fait face au polariseur, et le second corps de support provisoire est ensuite séparé de façon à transférer la couche optiquement anisotrope sur le polariseur, ce qui permet d'obtenir une plaque de polarisation.
PCT/JP2022/023434 2021-06-28 2022-06-10 Procédé de production d'une plaque de polarisation, procédé de production d'un dispositif d'affichage électroluminescent organique, plaque de polarisation, dispositif d'affichage électroluminescent organique et dispositif d'affichage à cristaux liquides WO2023276611A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
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WO2024176900A1 (fr) * 2023-02-24 2024-08-29 富士フイルム株式会社 Composition de cristaux liquides, couche durcie de cristaux liquides, film optique, plaque de polarisation, dispositif d'affichage d'image et copolymère

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JP2004226753A (ja) * 2003-01-23 2004-08-12 Nippon Oil Corp 光学積層体の製造方法、当該積層体からなる楕円偏光板、円偏光板および液晶表示装置
JP2010039217A (ja) * 2008-08-05 2010-02-18 Nitto Denko Corp 液晶パネル及び液晶表示装置
JP2013083955A (ja) * 2011-09-30 2013-05-09 Fujifilm Corp 光学フィルム、液晶表示装置、転写材、及び光学フィルムの製造方法
JP2016004142A (ja) * 2014-06-17 2016-01-12 林テレンプ株式会社 光学フィルム積層体とその製造方法及び該積層体を含む液晶表示パネル
JP2016206217A (ja) * 2015-04-15 2016-12-08 大日本印刷株式会社 光学フィルム、転写フィルム、画像表示装置、光学フィルムの製造方法及び転写フィルムの製造方法
JP2017097331A (ja) * 2015-11-13 2017-06-01 大日本印刷株式会社 光学フィルム
WO2018207798A1 (fr) * 2017-05-08 2018-11-15 富士フイルム株式会社 Afficheur a cristaux liquides
JP2019207390A (ja) * 2018-05-25 2019-12-05 住友化学株式会社 円偏光板の製造方法
JP2020091423A (ja) * 2018-12-06 2020-06-11 日本ゼオン株式会社 長尺の円偏光板及びその製造方法、並びに長尺の転写体

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JPH08278491A (ja) * 1995-04-07 1996-10-22 Nippon Oil Co Ltd 液晶性高分子フィルムの製造方法
JP2004226753A (ja) * 2003-01-23 2004-08-12 Nippon Oil Corp 光学積層体の製造方法、当該積層体からなる楕円偏光板、円偏光板および液晶表示装置
JP2010039217A (ja) * 2008-08-05 2010-02-18 Nitto Denko Corp 液晶パネル及び液晶表示装置
JP2013083955A (ja) * 2011-09-30 2013-05-09 Fujifilm Corp 光学フィルム、液晶表示装置、転写材、及び光学フィルムの製造方法
JP2016004142A (ja) * 2014-06-17 2016-01-12 林テレンプ株式会社 光学フィルム積層体とその製造方法及び該積層体を含む液晶表示パネル
JP2016206217A (ja) * 2015-04-15 2016-12-08 大日本印刷株式会社 光学フィルム、転写フィルム、画像表示装置、光学フィルムの製造方法及び転写フィルムの製造方法
JP2017097331A (ja) * 2015-11-13 2017-06-01 大日本印刷株式会社 光学フィルム
WO2018207798A1 (fr) * 2017-05-08 2018-11-15 富士フイルム株式会社 Afficheur a cristaux liquides
JP2019207390A (ja) * 2018-05-25 2019-12-05 住友化学株式会社 円偏光板の製造方法
JP2020091423A (ja) * 2018-12-06 2020-06-11 日本ゼオン株式会社 長尺の円偏光板及びその製造方法、並びに長尺の転写体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024176900A1 (fr) * 2023-02-24 2024-08-29 富士フイルム株式会社 Composition de cristaux liquides, couche durcie de cristaux liquides, film optique, plaque de polarisation, dispositif d'affichage d'image et copolymère

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