WO2015016297A1 - Procédé de production d'une plaque de polarisation - Google Patents

Procédé de production d'une plaque de polarisation Download PDF

Info

Publication number
WO2015016297A1
WO2015016297A1 PCT/JP2014/070156 JP2014070156W WO2015016297A1 WO 2015016297 A1 WO2015016297 A1 WO 2015016297A1 JP 2014070156 W JP2014070156 W JP 2014070156W WO 2015016297 A1 WO2015016297 A1 WO 2015016297A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
optically anisotropic
liquid crystal
film
temporary support
Prior art date
Application number
PCT/JP2014/070156
Other languages
English (en)
Japanese (ja)
Inventor
英章 香川
和宏 沖
Original Assignee
富士フイルム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2015529611A priority Critical patent/JPWO2015016297A1/ja
Publication of WO2015016297A1 publication Critical patent/WO2015016297A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3016—Polarising elements involving passive liquid crystal 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
    • G02F2202/00—Materials and properties
    • G02F2202/02—Materials and properties organic material
    • G02F2202/022—Materials and properties organic material polymeric
    • G02F2202/023—Materials and properties organic material polymeric curable

Definitions

  • the present invention relates to a method for producing a polarizing plate.
  • the present invention particularly relates to a method for producing a polarizing plate having an optically anisotropic layer formed from a composition containing a liquid crystal compound.
  • Patent Documents 1 and 2 disclose a thin polarizing plate is realized by applying a composition containing a liquid crystal compound directly on the surface of a polarizing film to form an optically anisotropic layer.
  • An object of the present invention is to provide a polarizing plate having a small film thickness.
  • the present invention is a method for producing a polarizing plate having an optically anisotropic layer formed from a composition containing a liquid crystal compound, and the optically anisotropic layer can be adhered to a polarizer with a minimum configuration. It is an object to provide a method for producing a polarizing plate.
  • the optically anisotropic layer on the temporary support formed by photocuring the composition containing the liquid crystal compound can be efficiently used by using the laminate film.
  • the present inventors have found that they can be transferred to a polarizer, and have completed the present invention based on this finding. That is, the present invention provides the following [1] to [14].
  • a method for producing a polarizing plate comprising the following (1) to (5): (1) A transfer material including a temporary support and an optically anisotropic layer, wherein the optically anisotropic layer is directly on the temporary support or on another layer provided on the temporary support.
  • a transfer material which is a layer formed from a polymerizable composition comprising a directly applied liquid crystal compound; (2) adhering the transfer material to a laminate film on the surface opposite to the temporary support relative to the optically anisotropic layer; (3) peeling the temporary support from a laminate of the transfer material and the laminate film; (4) The surface obtained by the peeling of the laminate of the transfer body including the optically anisotropic layer and the laminate film obtained after peeling the temporary support is bonded to a film containing a polarizer. That; and (5) The laminate film is peeled off.
  • the transfer material includes an alignment layer, and the optically anisotropic layer is a layer formed from a polymerizable composition including a liquid crystal compound directly applied to the alignment layer.
  • the production method according to any one of [8]. [10] The production method according to [8] or [9], wherein the outermost layer of the transfer body is the alignment layer.
  • the alignment layer contains a modified or unmodified polyvinyl alcohol.
  • the transfer material further includes an optically isotropic acrylic polymer layer, and the acrylic polymer layer was directly applied to the surface of the layer formed from the polymerizable composition containing a liquid crystal compound (meta The production method according to any one of [1] to [13], which is a layer formed by curing a polymerizable composition containing acrylate).
  • the present invention provides a method for producing a thin film polarizing plate.
  • a polarizing plate is obtained by adhering an optically anisotropic layer formed from a composition containing a liquid crystal compound to various polarizers with a minimum configuration regardless of the type of the liquid crystal compound by the production method of the present invention. Can be manufactured.
  • ⁇ is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.
  • the term “polarizing plate” is cut into a size to be incorporated into a long polarizing plate and a liquid crystal display device (in this specification, “cutting” includes “punching” and “ It is also used in the sense of including both of the polarizing plates.
  • polarizer sometimes referred to as “polarizing film”
  • polarizing plate are used separately, but “polarizing plate” is a laminate having a film on at least one side of “polarizer”. Means.
  • description with "(meth) acrylate” represents the meaning of "any one or both of an acrylate and a methacrylate.” The same applies to “(meth) acrylic acid” and the like.
  • Re ( ⁇ ) and Rth ( ⁇ ) represent in-plane retardation and retardation in the thickness direction at a wavelength ⁇ , respectively.
  • Re ( ⁇ ) is measured by making light having a wavelength of ⁇ nm incident in the normal direction of the film in KOBRA 21ADH or WR (manufactured by Oji Scientific Instruments). In selecting the measurement wavelength ⁇ nm, the wavelength selection filter can be exchanged manually, or the measurement value can be converted by a program or the like.
  • Rth ( ⁇ ) is calculated by the following method.
  • Rth ( ⁇ ) is Re ( ⁇ )
  • the in-plane slow axis (determined by KOBRA 21ADH or WR) is the tilt axis (rotation axis) (if there is no slow axis, any film surface in-plane
  • the direction of the axis of rotation is the film normal direction), and from the normal direction to 50 degrees on one side, the light of wavelength ⁇ nm is incident from each inclined direction in steps of 10 degrees to measure a total of 6 points.
  • KOBRA 21ADH or WR is calculated based on the retardation value, the assumed average refractive index value, and the input film thickness value.
  • Re ( ⁇ ) represents a retardation value in a direction inclined by an angle ⁇ from the normal direction.
  • nx represents the refractive index in the slow axis direction in the plane
  • ny represents the refractive index in the direction perpendicular to nx in the plane
  • nz represents the refractive index in the direction perpendicular to nx and ny.
  • d is the film thickness.
  • Formula (12): Rth ⁇ (nx + ny) / 2 ⁇ nz ⁇ ⁇ d
  • nx represents the refractive index in the slow axis direction in the plane
  • ny represents the refractive index in the direction perpendicular to nx in the plane
  • nz represents the refractive index in the direction perpendicular to nx and ny.
  • d is the film thickness.
  • Rth ( ⁇ ) is calculated by the following method.
  • Rth ( ⁇ ) is Re ( ⁇ )
  • the in-plane slow axis (determined by KOBRA 21ADH or WR) is tilt axis (rotary axis) from ⁇ 50 degrees to +50 degrees with respect to the film normal direction.
  • KOBRA 21ADH or WR is measured based on the measured retardation value, the assumed average refractive index, and the input film thickness value. Is calculated.
  • the assumed value of the average refractive index may be a value in a polymer handbook (John Wiley & Sons, Inc.) or a catalog of various optical films. Those whose average refractive index is not known can be measured with an Abbe refractometer.
  • the average refractive index values of the main optical films are exemplified below: cellulose acylate (1.48), cycloolefin polymer (1.52), polycarbonate (1.59), polymethyl methacrylate (1.49), Polystyrene (1.59).
  • the KOBRA 21ADH or WR calculates nx, ny, and nz by inputting the assumed value of the average refractive index and the film thickness.
  • Nz (nx ⁇ nz) / (nx ⁇ ny) is further calculated from the calculated nx, ny, and nz.
  • a measurement wavelength is 550 nm.
  • Re (550) when it is simply described as Re, Re (550) is indicated.
  • optically isotropic means that the in-plane retardation (Re (550)) has an absolute value of 10 nm or less and the thickness direction retardation (Rth) has an absolute value of 10 nm or less. It means that. That the retardation is not substantially 0 means that Re is larger than 10 nm.
  • the angle for example, an angle such as “90 °”
  • the relationship for example, “orthogonal”, “parallel”, “crossing at 45 °”, etc.
  • the range of allowable error is included.
  • the angle is within the range of strict angle ⁇ 10 °, and the error from the strict angle is preferably 5 ° or less, and more preferably 3 ° or less.
  • the retardation being substantially 0 means that Re (550) ⁇ 10 nm and Rth (550) ⁇ 10 nm, preferably Re (550) ⁇ 5 nm and Rth (550) ⁇ 5 nm.
  • the polarizing plate produced by the production method of the present invention includes an optically anisotropic layer and a polarizer.
  • the optically anisotropic layer should just be arrange
  • the polarizing plate is further provided with an alignment layer for alignment of the liquid crystal compound during the formation of the optically anisotropic layer, a protective film for protecting the surface of the polarizer or the optically anisotropic layer, and for adhesion of each layer.
  • Other layers such as an adhesive layer may be included.
  • An example of the layer structure of a polarizing plate produced by the production method of the present invention is shown in FIG. In the figure, the adhesive layer is omitted.
  • the thickness of the polarizing plate is not particularly limited, but may be about 50 ⁇ m to 500 ⁇ m.
  • the polarizing plate can be formed as a thin film of 200 ⁇ m or less, 150 ⁇ m or less, 120 ⁇ m or less, 100 ⁇ m or less, 90 ⁇ m or less, 80 ⁇ m or less, 70 ⁇ m or less.
  • a transfer material including a temporary support and an optically anisotropic layer is used.
  • the optically anisotropic layer formed by applying the optically anisotropic layer to the film containing the polarizer from the transfer material by the step of transferring the optically anisotropic layer to the film containing the polarizer It is possible to form without depending on properties, and it is possible to form optically anisotropic layers having various liquid crystal compound alignment forms using various liquid crystal compounds.
  • the heating process required in the process of forming the optically anisotropic layer may affect the properties of the polarizer.
  • the manufacturing method using the transfer material may affect the polarizer without affecting the polarizer.
  • An isotropic layer can be produced.
  • the transfer material is a material that can peel the temporary support to provide an optically anisotropic layer.
  • an object transferred to a film including a polarizer that is, an object bonded to a film including a polarizer may be referred to as a “transfer body”.
  • the transfer body is a film including an optically anisotropic layer obtained by peeling a temporary support from a transfer material.
  • the transfer material may include an alignment layer for aligning the liquid crystal compound when forming the optically anisotropic layer.
  • the alignment layer and the optically anisotropic layer are preferably in contact with each other.
  • the temporary support and the alignment layer may be in contact with each other.
  • the transfer material may include other layers such as a release layer and a release layer.
  • the transfer material is obtained by directly applying a polymerizable composition containing a liquid crystal compound to the surface of the temporary support or the surface of the alignment layer provided on the temporary support, and irradiating the obtained coating layer with light to obtain a liquid crystal compound. It can manufacture by hardening the polymeric composition containing this and forming an optically anisotropic layer.
  • a polymerizable composition containing a liquid crystal compound to the surface of the temporary support or the surface of the alignment layer provided on the temporary support, and irradiating the obtained coating layer with light to obtain a liquid crystal compound. It can manufacture by hardening the polymeric composition containing this and forming an optically anisotropic layer.
  • the optically anisotropic layer is a layer having at least one incident direction in which retardation is not substantially zero when the retardation is measured, and is a layer having optical properties that are not isotropic.
  • the optically anisotropic layer used in the present invention is a layer formed from a polymerizable composition containing a liquid crystal compound.
  • the optically anisotropic layer may be formed by irradiating a polymerizable composition containing a liquid crystal compound with light to polymerize the liquid crystal compound.
  • the polymerizable composition includes a liquid crystal compound having at least one polymerizable group, as long as the liquid crystal compound is polymerized by the polymerizable group by light irradiation or heating.
  • the polymerizable composition is preferably applied directly to the alignment layer provided on the temporary support.
  • the coating layer is further dried at room temperature or the like, or heated (for example, heating at 50 ° C. to 150 ° C., preferably 80 ° C. to 120 ° C.) to align the liquid crystal compound molecules in the layer. It is only necessary to form an optically anisotropic layer by polymerizing and fixing this.
  • the film thickness of the optically anisotropic layer is 10 ⁇ m or less, less than 8 ⁇ m, 7 ⁇ m or less, 6 ⁇ m or less, 5 ⁇ m or less, 4 ⁇ m or less, 3 ⁇ m or less, 2 ⁇ m or less, 1.9 ⁇ m or less, 1.8 ⁇ m or less, 1.7 ⁇ m or less, 1 .6 ⁇ m or less, 1.5 ⁇ m or less, 1.4 ⁇ m or less, 1.3 ⁇ m or less, 1.2 ⁇ m or less, 1.1 ⁇ m or less, or 1 ⁇ m or less, or 0.2 ⁇ m or more, 0.3 ⁇ m or more, 0.
  • the optically anisotropic layer is also preferably transparent (for example, light transmittance of 80% or more).
  • the polarizing plate may contain two or more optically anisotropic layers. Two or more optically anisotropic layers may be in direct contact with each other in the normal direction, or other layers such as an alignment layer may be sandwiched therebetween.
  • the polymerizable compositions forming two or more layers may be the same or different.
  • a combination of two optically anisotropic layers it may be a combination of layers formed from a composition containing a rod-like liquid crystal compound, or a combination of layers formed from a composition containing a discotic liquid crystal compound, A combination of a layer formed from a composition containing a rod-like liquid crystal compound and a layer formed from a composition containing a discotic liquid crystal compound may be used.
  • the polarizing plate includes two or more optically anisotropic layers
  • the previously prepared optically anisotropic layer may function as an alignment layer of the optically anisotropic layer formed later. At this time, the previously produced optically anisotropic layer may be rubbed.
  • the total thickness of the optically anisotropic layers is preferably the above film thickness.
  • the two optically anisotropic layers may have a function as a ⁇ / 4 retardation plate, for example.
  • the ⁇ / 4 retardation plate functions as a circularly polarizing plate in combination with a polarizer (linear polarizer).
  • Retardation plates have a great many applications, and are already used for reflective LCDs, transflective LCDs, brightness enhancement films, organic EL display devices, touch panels, and the like.
  • an organic EL (organic electroluminescence) element has a structure in which layers having different refractive indexes are laminated or a structure using a metal electrode, so that external light is reflected at the interface of each layer, causing problems such as a decrease in contrast and reflection. May occur. Therefore, conventionally, a circularly polarizing plate composed of a phase difference plate and a polarizing film has been used for an organic EL display device, an LCD display device, and the like in order to suppress adverse effects due to external light reflection.
  • liquid crystal compound examples include a rod-like liquid crystal compound and a disk-like liquid crystal compound.
  • rod-like liquid crystal compound include azomethines, azoxys, cyanobiphenyls, cyanophenyl esters, benzoic acid esters, cyclohexanecarboxylic acid phenyl esters, cyanophenylcyclohexanes, cyano-substituted phenylpyrimidines, alkoxy-substituted phenylpyrimidines, Phenyldioxanes, tolanes and alkenylcyclohexylbenzonitriles are preferably used.
  • high-molecular liquid crystalline molecules can also be used.
  • the rod-like liquid crystal compound is more preferably fixed in orientation by polymerization, and examples of the polymerizable rod-like liquid crystal compound include those described in Makromol. Chem. 190, 2255 (1989), Advanced Materials, 5, 107 (1993), U.S. Pat. Nos. 4,683,327, 5,622,648, 5,770,107, WO 95/22586, 95/24455, 97/97. No. 0600, No. 98/23580, No.
  • the polymerizable rod-like liquid crystal compound is preferably a polymerizable rod-like liquid crystal compound represented by the following general formula (1).
  • Q 1 and Q 2 are each independently a polymerizable group.
  • the polymerization reaction of the polymerizable group is preferably addition polymerization (including ring-opening polymerization) or condensation polymerization.
  • the polymerizable group is preferably a functional group capable of addition polymerization reaction or condensation polymerization reaction. Examples of polymerizable groups are shown below.
  • preferred polymerizable groups include acryl groups and methacryl groups.
  • both Q 1 and Q 2 in the general formula (1) are an acryl group or a methacryl group.
  • L 1 and L 4 are each independently a divalent linking group.
  • L 1 and L 4 each independently comprises —O—, —S—, —CO—, —NR—, —C ⁇ N—, a divalent chain group, a divalent cyclic group, and combinations thereof.
  • a divalent linking group selected from the group is preferred.
  • R is an alkyl group having 1 to 7 carbon atoms or a hydrogen atom.
  • R is preferably an alkyl group having 1 to 4 carbon atoms or a hydrogen atom, more preferably a methyl group, an ethyl group or a hydrogen atom, and most preferably a hydrogen atom.
  • bivalent coupling group which consists of a combination is shown below.
  • the left side is coupled to Q (Q 1 or Q 2 ), and the right side is coupled to Cy (Cy 1 or Cy 3 ).
  • L-1 —CO—O—divalent chain group —O— L-2: —CO—O—divalent chain group —O—CO— L-3: —CO—O—divalent chain group —O—CO—O— L-4: —CO—O—divalent chain group—O—divalent cyclic group— L-5: —CO—O—divalent chain group —O—divalent cyclic group —CO—O— L-6: —CO—O—divalent chain group —O—divalent cyclic group —O—CO— L-7: —CO—O—Divalent chain group—O—Divalent cyclic group—Divalent chain group— L-8: —CO—O—divalent chain group—O—divalent cyclic group—divalent chain group —CO—O— L-9: —CO—O—Divalent chain group—O—Divalent cyclic group—Divalent chain group—O—CO— L-10: —CO
  • the divalent chain group means an alkylene group, a substituted alkylene group, an alkenylene group, a substituted alkenylene group, an alkynylene group, or a substituted alkynylene group.
  • An alkylene group, a substituted alkylene group, an alkenylene group and a substituted alkenylene group are preferred, and an alkylene group and an alkenylene group are more preferred.
  • the alkylene group may have a branch.
  • the alkylene group preferably has 1 to 12 carbon atoms, more preferably 2 to 10 carbon atoms, and most preferably 2 to 8 carbon atoms.
  • the alkylene part of the substituted alkylene group is the same as the above alkylene group.
  • the substituent examples include a halogen atom.
  • the alkenylene group may have a branch.
  • the alkenylene group preferably has 2 to 12 carbon atoms, more preferably 2 to 10 carbon atoms, and most preferably 2 to 8 carbon atoms.
  • the alkylene part of the substituted alkylene group is the same as the above alkylene group.
  • Examples of the substituent include a halogen atom.
  • the alkynylene group may have a branch.
  • the alkynylene group preferably has 2 to 12 carbon atoms, more preferably 2 to 10 carbon atoms, and most preferably 2 to 8 carbon atoms.
  • the alkynylene part of the substituted alkynylene group is the same as the above alkynylene group.
  • substituents include a halogen atom.
  • divalent chain group include ethylene, trimethylene, propylene, tetramethylene, 2-methyl-tetramethylene, pentamethylene, hexamethylene, octamethylene, 2-butenylene, 2-butynylene and the like.
  • divalent cyclic group is the same as those of Cy 1 , Cy 2 and Cy 3 described later.
  • L 2 or L 3 are each independently a single bond or a divalent linking group.
  • L 2 and L 3 each independently comprises —O—, —S—, —CO—, —NR—, —C ⁇ N—, a divalent chain group, a divalent cyclic group, and combinations thereof. It is preferably a divalent linking group or a single bond selected from the group.
  • R is an alkyl group having 1 to 7 carbon atoms or a hydrogen atom, preferably an alkyl group having 1 to 4 carbon atoms or a hydrogen atom, more preferably a methyl group, an ethyl group or a hydrogen atom. Preferably, it is a hydrogen atom.
  • the divalent chain group and the divalent cyclic group have the same definitions as L 1 and L 4 .
  • Preferred divalent linking groups as L 2 or L 3 include —COO—, —OCO—, —OCOO—, —OCONR—, —COS—, —SCO—, —CONR—, —NRCO—, —CH 2. CH 2 —, —C ⁇ C—COO—, —C ⁇ N—, —C ⁇ N—N ⁇ C—, and the like.
  • n is 0, 1, 2, or 3.
  • two L 3 may be the same or different, and two Cy 2 may be the same or different.
  • n is preferably 1 or 2, and more preferably 1.
  • Cy 1 , Cy 2 and Cy 3 are each independently a divalent cyclic group.
  • the ring contained in the cyclic group is preferably a 5-membered ring, a 6-membered ring, or a 7-membered ring, more preferably a 5-membered ring or a 6-membered ring, and most preferably a 6-membered ring.
  • the ring contained in the cyclic group may be a condensed ring. However, it is more preferably a monocycle than a condensed ring.
  • the ring contained in the cyclic group may be any of an aromatic ring, an aliphatic ring, and a heterocyclic ring.
  • Examples of the aromatic ring include a benzene ring and a naphthalene ring.
  • Examples of the aliphatic ring include a cyclohexane ring.
  • Examples of the heterocyclic ring include a pyridine ring and a pyrimidine ring.
  • As the cyclic group having a benzene ring 1,4-phenylene is preferable.
  • As the cyclic group having a naphthalene ring naphthalene-1,5-diyl and naphthalene-2,6-diyl are preferable.
  • the cyclic group having a cyclohexane ring is preferably 1,4-cyclohexylene.
  • cyclic group having a pyridine ring pyridine-2,5-diyl is preferable.
  • the cyclic group having a pyrimidine ring is preferably pyrimidine-2,5-diyl.
  • the cyclic group may have a substituent. Examples of the substituent include a halogen atom, a cyano group, a nitro group, an alkyl group having 1 to 5 carbon atoms, a halogen-substituted alkyl group having 1 to 5 carbon atoms, and an alkoxy group having 1 to 5 carbon atoms.
  • Examples of the polymerizable rod-like liquid crystal compound represented by the general formula (1) are shown below, but examples of the polymerizable rod-like liquid crystal compound are not limited to these.
  • M 1 and M 2 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a heterocyclic group, a cyano group, a halogen, —SCN, — CF 3 , a nitro group, or Q 1 is represented, but at least one of M 1 and M 2 represents a group other than Q 1 .
  • Q 1, L 1, L 2, L 3, L 4, Cy 1, Cy 2, Cy 3 and n have the same meanings as the group represented by the general formula (1).
  • P and q are 0 or 1.
  • M 1 and M 2 are preferably a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a cyano group, more preferably , An alkyl group having 1 to 4 carbon atoms, or a phenyl group, and p and q are preferably 0.
  • the preferable mixing ratio (mass ratio) of the compound represented by the general formula (2) in the mixture of the polymerizable liquid crystal compound represented by the general formula (1) and the compound represented by the general formula (2) Is 0.1% to 40%, more preferably 1% to 30%, and still more preferably 5% to 20%.
  • the discotic liquid crystal compounds are disclosed in various literatures (C. Destrade et al., Mol. Cryst. Liq. Cryst., Vol. 71, page 111 (1981); edited by The Chemical Society of Japan, Quarterly Chemical Review, No. 22, Liquid Crystal). Chemistry, Chapter 5, Chapter 10 Section 2 (1994); B. Kohne et al., Angew. Chem. Soc. Chem. Comm., Page 1794 (1985): J. Zhang et al., J. Chem. Am. Chem. Soc., Vol. 116, page 2655 (1994)).
  • the polymerization of the discotic liquid crystal compound is described in JP-A-8-27284.
  • the photocurable discotic liquid crystal compound is preferably a compound represented by the following formula (3).
  • D (-LP) n (In the general formula, D is a discotic core, L is a divalent linking group, P is a polymerizable group, and n is an integer of 4 to 12.) Preferred specific examples of the discotic core (D), the divalent linking group (L), and the polymerizable group (P) in the formula (3) are (D1) to (D1) described in JP-A-2001-4837, respectively. (D15), (L1) to (L25), (P1) to (P18), and the contents described in the publication can be preferably used. As the discotic liquid crystal compound, it is also preferable to use a compound represented by the general formula (DI) described in JP-A-2007-2220.
  • the liquid crystal compound is 80% by mass or more, 90% by mass or more, or 95% by mass or more, and 99.99% by mass or less, 99.98% with respect to the solid content mass (the mass excluding the solvent) of the polymerizable composition. It should just be contained in the mass% or less and 99.97 mass% or less.
  • the compound containing an acrylic group or a methacryl group is 70% by mass or more, 80% by mass or more, 90% by mass or more, or 95% by mass or more, and 99.99% by mass or less, 99.98% by mass or less. 99.97% by mass or less.
  • the liquid crystal compound may be fixed in any alignment state of horizontal alignment, vertical alignment, tilt alignment, and twist alignment.
  • horizontal alignment means that in the case of a rod-like liquid crystal, the molecular long axis and the horizontal plane of the transparent support are parallel, and in the case of a disc-like liquid crystal, the disc surface of the core of the disc-like liquid crystal compound.
  • the horizontal plane of the transparent support is parallel, but it is not required to be strictly parallel, and in this specification, an inclination angle with the horizontal plane is less than 10 degrees.
  • the optically anisotropic layer used in the present invention preferably contains a rod-shaped liquid crystal compound fixed in a horizontally aligned state.
  • solvent As a solvent used for preparing a coating liquid when a composition containing a liquid crystal compound is prepared as a coating liquid, an organic solvent, water, or a mixed solvent thereof is preferably used.
  • organic solvents include amides (eg N, N-dimethylformamide), sulfoxides (eg dimethyl sulfoxide), heterocyclic compounds (eg pyridine), hydrocarbons (eg benzene, hexane), alkyl halides (eg , Chloroform, dichloromethane), esters (eg, methyl acetate, butyl acetate), ketones (eg, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone), ethers (eg, tetrahydrofuran, 1,2-dimethoxyethane), alkyl alcohols (eg, , Methanol, ethanol, propanol). Two or more kinds of solvents may be
  • the alignment of the liquid crystalline compound is preferably fixed by a crosslinking reaction of a polymerizable group introduced into the liquid crystalline compound, more preferably by a polymerization reaction of the polymerizable group.
  • the polymerization reaction includes a thermal polymerization reaction using a thermal polymerization initiator and a photopolymerization reaction using a photopolymerization initiator.
  • the polymerization reaction may be either radical polymerization or cationic polymerization, but radical polymerization is preferred.
  • radical photopolymerization initiators examples include ⁇ -carbonyl compounds (described in US Pat. Nos. 2,367,661 and 2,367,670), acyloin ether (described in US Pat. No. 2,448,828), ⁇ -hydrocarbon-substituted aromatics.
  • An acyloin compound (described in US Pat. No. 2,722,512), a polynuclear quinone compound (described in US Pat. Nos. 3,046,127 and 2,951,758), a combination of a triarylimidazole dimer and p-aminophenyl ketone (US Pat. No.
  • a radical thermal polymerization initiator is a compound that generates radicals when heated to a decomposition temperature or higher.
  • radical thermal polymerization initiators include, for example, diacyl peroxide (acetyl peroxide, benzoyl peroxide, etc.), ketone peroxide (methyl ethyl ketone peroxide, cyclohexanone peroxide, etc.), hydroperoxide (hydrogen peroxide, tert-butyl hydroperoxide, cumene hydroperoxide, etc.), dialkyl peroxides (di-tert-butyl peroxide, dicumyl peroxide, dilauroyl peroxide, etc.) peroxyesters (tert-butyl peroxyacetate, tert -Butyl peroxypivalate, etc.), azo compounds (azobisisobutyronitrile, azobisisovaleronitrile, etc.), persulfates (ammonium persulfate,
  • the amount of the polymerization initiator used is preferably 0.01 to 20% by mass, more preferably 0.5 to 5% by mass, based on the solid content of the coating solution.
  • Light irradiation for the polymerization of the liquid crystal compound is preferably performed using ultraviolet rays.
  • the irradiation energy is preferably 10 mJ / cm 2 to 10 J / cm 2 , and more preferably 25 to 1000 mJ / cm 2 .
  • the illuminance is preferably 10 to 2000 mW / cm 2 , more preferably 20 to 1500 mW / cm 2 , and still more preferably 40 to 1000 mW / cm 2 .
  • the irradiation wavelength preferably has a peak at 250 to 450 nm, and more preferably has a peak at 300 to 410 nm.
  • light irradiation may be performed under an inert gas atmosphere such as nitrogen or under heating conditions. Heating for thermal polymerization of the liquid crystal compound is preferably performed within a temperature range of 50 to 200 ° C. for 10 minutes to 30 hours.
  • the compounds represented by the general formulas (1) to (3) and the general formula (4) described in paragraphs “0098” to “0105” of JP2009-69793A are described.
  • the molecule of the liquid crystal compound can be substantially horizontally aligned by containing at least one of a fluorine-containing homopolymer or copolymer using the monomer (1).
  • the inclination angle is preferably 0 to 5 degrees, more preferably 0 to 3 degrees, further preferably 0 to 2 degrees, and most preferably 0 to 1 degree.
  • the addition amount of the horizontal alignment agent is preferably 0.01 to 20% by mass, more preferably 0.01 to 10% by mass, and particularly preferably 0.02 to 1% by mass, based on the mass of the liquid crystal compound.
  • the compounds represented by the general formulas (1) to (4) described in paragraphs “0098” to “0105” of JP-A-2009-69793 may be used alone or in combination of two or more. You may use together.
  • a polymerizable composition containing a liquid crystal compound includes an onium salt described in paragraphs 0121 to 0148 of JP2013-050583A, particularly a pyridinium compound represented by formula (I) described in JP2006-113500A. May be included.
  • the onium salt can function as an alignment layer interface side vertical alignment agent.
  • the molecules of the discotic liquid crystalline compound can be aligned substantially vertically in the vicinity of the alignment layer.
  • the polymerizable composition containing a liquid crystal compound may contain a boronic acid compound represented by the general formula (I) described in JP2013-0542201A.
  • the polymerizable composition containing a liquid crystal compound may contain other necessary additives, but preferably does not contain a so-called chiral agent.
  • the temporary support is not particularly limited and may be rigid or flexible, but is preferably flexible in terms of easy handling.
  • the rigid support is not particularly limited, but is a known glass plate such as a soda glass plate having a silicon oxide film on its surface, a low expansion glass, a non-alkali glass, a quartz glass plate, a metal such as an aluminum plate, an iron plate, or a SUS plate.
  • a board, a resin board, a ceramic board, a stone board, etc. are mentioned.
  • cellulose esters eg, cellulose acetate, cellulose propionate, cellulose butyrate
  • polyolefins eg, norbornene polymers
  • poly (meth) acrylic acid esters eg, polymethyl) Methacrylate
  • polycarbonate eg, polyester (eg, polyethylene terephthalate and polyethylene naphthalate), polysulfone, and cycloolefin polymer (eg, norbornene resin (ZEONEX, ZEONOR, manufactured by Nippon Zeon Co., Ltd., Arton manufactured by JSR), etc.)
  • Etc Etc.
  • the film thickness of the rigid support is 10 for ease of handling.
  • the flexible support is 300 ⁇ 1500 .mu.m, it may be about 5 [mu] m ⁇ 1000 .mu.m, preferably from 10 [mu] m ⁇ 250 [mu] m, more preferably 15 [mu] m ⁇ 90 [mu] m.
  • the optically anisotropic layer may be formed from a layer of a polymerizable composition applied to the surface of the alignment layer.
  • the alignment layer functions to define the alignment of the liquid crystal compound in the polymerizable composition provided thereon.
  • the orientation layer may be any layer as long as it can impart orientation to the optically anisotropic layer. Not only a known material for the vertical alignment film but also a known material for the horizontal alignment film can be selected.
  • the alignment layer examples include a layer made of an organic compound (preferably a polymer), a photo-alignment layer that exhibits liquid crystal alignment by polarized irradiation represented by azobenzene polymer and polyvinyl cinnamate, an oblique deposition layer of an inorganic compound, And a layer having a microgroove, a cumulative film formed by Langmuir-Blodgett method (LB film) such as ⁇ -tricosanoic acid, dioctadecylmethylammonium chloride and methyl stearylate, or a dielectric by applying an electric field or a magnetic field. Mention may be made of oriented layers.
  • an organic compound preferably a polymer
  • a photo-alignment layer that exhibits liquid crystal alignment by polarized irradiation represented by azobenzene polymer and polyvinyl cinnamate
  • an oblique deposition layer of an inorganic compound And a layer having a micro
  • a polymer layer is preferable, and a polymer layer containing modified or unmodified polyvinyl alcohol is particularly preferable.
  • Modified or unmodified polyvinyl alcohol is also used as a horizontal alignment film, but by adding an onium compound to the composition for forming an optically anisotropic layer, the action of the onium compound and the alignment film, and the onium compound
  • the liquid crystal molecules can be aligned in a tilted alignment state having a high average tilt angle or a vertical alignment state at the interface of the alignment film by the action of the liquid crystal compound and the like.
  • Modified polyvinyl alcohol is a product in which at least one hydroxyl group of polyvinyl alcohol is modified with a functional group.
  • polyvinyl alcohol is modified with an acetoacetyl group, a sulfonic acid group, a carboxyl group, an oxyalkylene group, or the like. including.
  • the alignment film it is preferable to use an alignment film containing a modified polyvinyl alcohol containing a unit having a polymerizable group. This is because the adhesion with the optically anisotropic layer can be further improved.
  • polyvinyl alcohol in which at least one hydroxyl group is substituted with a group having a vinyl moiety, an oxiranyl moiety or an aziridinyl moiety is preferable.
  • modified polyvinyl alcohol described in paragraph Nos. [0071] to [0095] of Japanese Patent No. 3907735 Alcohol is preferred.
  • the thickness of the alignment layer is preferably 0.01 to 5 ⁇ m, more preferably 0.05 to 2 ⁇ m.
  • the alignment layer is preferably subjected to a rubbing treatment, and an optically anisotropic layer is preferably provided on the surface subjected to the rubbing treatment.
  • the rubbing treatment applied to the alignment layer can be generally carried out by rubbing the surface of the film mainly composed of a polymer with paper or cloth in a certain direction.
  • a general method of rubbing is described in, for example, “Liquid Crystal Handbook” (issued by Maruzen, October 30, 2000).
  • the rubbing density (L) is quantified by the following formula (A).
  • Formula (A) L Nl (1 + 2 ⁇ rn / 60v)
  • N is the number of rubbing
  • l is the contact length of the rubbing roller
  • r is the radius of the roller
  • n is the number of rotations (rpm) of the roller
  • v is the stage moving speed (second speed).
  • the rubbing frequency should be increased, the contact length of the rubbing roller should be increased, the radius of the roller should be increased, the rotation speed of the roller should be increased, and the stage moving speed should be decreased, while the rubbing density should be decreased. To do this, you can reverse this.
  • the description in Japanese Patent No. 4052558 can also be referred to as conditions for the rubbing process.
  • Each of the polarizing plate and the transfer material may include an acrylic polymer layer formed by curing a polymerizable composition containing (meth) acrylate.
  • the acrylic polymer layer is applied directly to the surface of the optically anisotropic layer or the optically anisotropic layer before curing with a polymerizable composition containing a (meth) acrylate monomer. It means a layer formed by curing.
  • the optically anisotropic layer or the optically anisotropic layer before curing may be referred to as “a layer formed from a polymerizable composition containing a liquid crystal compound” in this specification.
  • an optically isotropic layer may be used as the acrylic polymer layer.
  • the acrylic polymer layer that is optically isotropic may be a layer that does not correspond to a polymer layer obtained by polymerizing a liquid crystal compound having an acrylate group, and is a (meth) acrylate for forming an acrylic polymer layer.
  • the polymerizable composition containing the liquid crystal compound has a solid content of less than 80% by mass, less than 70% by mass, less than 60% by mass, less than 50% by mass, less than 40% by mass, less than 30% by mass, and less than 20% by mass. It is preferably less than 10, less than 10% by mass, less than 5% by mass, or less than 1% by mass.
  • the (meth) acrylate in the polymerizable composition containing (meth) acrylate for forming the acrylic polymer layer is not particularly limited as long as it is a compound containing an acryloyl group or a methacryloyl group.
  • the compound may have one acryloyl group or methacryloyl group, or two or more (for example, 2, 3, 4, etc.).
  • the molecular weight of the (meth) acrylate may be about 5000 or less, preferably 3000 or less, more preferably 2000 or less, and particularly preferably 1000 or less.
  • (meth) acrylate includes (meth) acrylic acid and various esters thereof (such as methyl (meth) acrylate).
  • a polymerizable compound other than (meth) acrylate may be contained.
  • Acrylic polymers include, for example, polymethyl (meth) acrylate, copolymers of (meth) acrylic acid and various esters thereof, copolymers of styrene and (meth) acrylic acid or various (meth) acrylic esters, vinyltoluene and ( Mention may be made of (meth) acrylic acid or copolymers of various (meth) acrylic acid esters.
  • Preferred examples include copolymers of methyl (meth) acrylate and (meth) acrylic acid, copolymers of allyl (meth) acrylate and (meth) acrylic acid, benzyl (meth) acrylate and (meth) acrylic acid, and others. And multi-component copolymers with other monomers. These polymers may be used alone or in combination of two or more.
  • the acrylic polymer layer may be either one obtained by thermal polymerization of (meth) acrylate and other monomers, or one obtained by photopolymerization, but one obtained by photopolymerization is particularly preferred.
  • the photopolymerization reaction should just be performed in the coating layer in which the polymeric composition containing (meth) acrylate is directly apply
  • the light irradiation for the photopolymerization reaction may be performed under the same conditions as the light irradiation for the polymerization of the liquid crystal compound described above, and the light irradiation for the polymerization of the liquid crystal compound simultaneously polymerizes the (meth) acrylate. May be.
  • a thermal polymerization initiator or a photopolymerization initiator is appropriately used according to the method.
  • photopolymerization initiators vicinal polyketaldonyl compounds disclosed in US Pat. No. 2,367,660, acyloin ether compounds described in US Pat. No. 2,448,828, US Pat. No. 2,722,512
  • a polymer having a high Tg may be used as the polymer in the acrylic polymer layer.
  • the Tg is preferably 50 ° C. or higher, more preferably 80 ° C. or higher, and even more preferably 100 ° C. or higher.
  • a polar group such as a hydroxyl group, a carboxylic acid group, or an amino group may be introduced.
  • high Tg polymers examples include poly (methyl) acrylate, alkyl (meth) acrylate reactants such as polyethyl (meth) acrylate, copolymers of alkyl (meth) acrylate and (meth) acrylic acid, 2-hydroxyethyl Reaction products of hydroxyl group-containing (meth) acrylates such as (meth) acrylate and 2-hydroxypropyl (meth) acrylate, alkyl (meth) acrylates, hydroxyl group-containing (meth) acrylates and succinic anhydride, acid anhydrides such as phthalic anhydride And a copolymer of a half ester which is a reaction product with the product.
  • alkyl (meth) acrylate reactants such as polyethyl (meth) acrylate, copolymers of alkyl (meth) acrylate and (meth) acrylic acid
  • 2-hydroxyethyl Reaction products of hydroxyl group-containing (meth) acrylates
  • a layer obtained by polymerizing a layer containing at least one bifunctional or higher polymerizable monomer and a polymerizable polymer by light irradiation or heat may be used.
  • reactive groups include (meth) acryl groups, vinyl groups, allyl groups, epoxy groups, oxetanyl groups, vinyl ether groups, and the like.
  • polymerizable polymers examples include glycidyl (meth) acrylate, allyl (meth) acrylate, ethylene glycol di (meth) acrylate, glycerol 1,3-di (meth) acrylate-containing acrylate reactants, polymerizability Examples thereof include a copolymer of a group-containing acrylate and (meth) acrylic acid, and a multi-component copolymer of a polymerizable group-containing acrylate and another monomer.
  • a solvent similar to the solvent used in the polymerizable composition containing the liquid crystal compound can be used.
  • the thickness of the acrylic polymer layer is 60 ⁇ m or less, 50 ⁇ m or less, 40 ⁇ m or less, 30 ⁇ m or less, 25 ⁇ m or less, or 15 ⁇ m or less, or 2 ⁇ m or more, 3 ⁇ m or more, 3.5 ⁇ m or more, 4 ⁇ m or more, 4.5 ⁇ m or more, or 5 ⁇ m.
  • the above is preferable.
  • the temporary support, the optically anisotropic layer, and the acrylic polymer layer are preferably included in this order.
  • the optically anisotropic layer and the acrylic polymer layer are also preferably in direct contact with each other.
  • the transfer material includes the acrylic polymer layer
  • the transfer body including the acrylic polymer layer and the optically anisotropic layer can be easily peeled from the temporary support.
  • transfer of the optically anisotropic layer to the polarizer is possible even if the transfer material does not include the acrylic polymer layer. It is.
  • a polymer formed from a composition directly applied to the surface of a protective film other than an acrylic polymer layer for example, an optically anisotropic layer or a layer formed from a polymerizable composition containing a liquid crystal compound. Even if it does not contain a layer etc., an optically anisotropic layer can be transcribe
  • the transfer material or polarizing plate may contain other functional layers such as a low moisture permeable layer, a protective layer, an antistatic layer, a hard coat layer, an adhesive layer, a release layer, and a release layer in addition to the above layers. Good.
  • the release layer is a layer that is provided between the temporary support and the optically anisotropic layer, and is peeled from the transfer material together with the temporary support in the production method of the present invention.
  • Use of a release layer stabilizes the peeling between the release layer and the adjacent layer (alignment layer, etc.) formed on the opposite side of the temporary support when viewed from the release layer, improving transferability during transfer Can be made.
  • a release resin As the release layer, a release resin, a resin containing a release agent, a curable resin that is cross-linked by light irradiation, and the like can be applied.
  • the release resin include fluorine-based resins, silicones, melamine-based resins, epoxy resins, polyester resins, acrylic resins, and fiber-based resins, and preferably melamine-based resins.
  • the resin containing a release agent include acrylic resins, vinyl resins, polyester resins, and fiber resins obtained by adding or copolymerizing release agents such as fluorine resins, silicones, and various waxes. Can be mentioned.
  • the release layer may be formed by dispersing or dissolving the resin in a solvent, and applying and drying by a known coating method such as roll coating or gravure coating. If necessary, it may be crosslinked by heating at a temperature of 30 ° C. to 120 ° C., aging, or irradiation with ionizing radiation.
  • the thickness of the release layer is usually about 0.01 ⁇ m to 5.0 ⁇ m, preferably about 0.5 ⁇ m to 3.0 ⁇ m.
  • the peeling layer is a layer that is provided between the temporary support and the optically anisotropic layer and is the outermost surface of the transfer body obtained by peeling the temporary support from the transfer material in the production method of the present invention. is there. Use of the release layer stabilizes the temporary support from the transfer material. Since the release layer is the outermost surface of the transfer body, it preferably has surface protection.
  • the peelability from the temporary support and the adhesion to the adjacent layer (alignment layer, patterned optically anisotropic layer, etc.) formed on the opposite side of the temporary support as viewed from the release layer
  • it has, for example, acrylic resin, vinyl chloride-vinyl acetate copolymer resin, polyester resin, polymethacrylate resin, polyvinyl chloride resin, cellulose resin, silicone resin, chlorinated rubber, Casein, metal oxides and the like can be used. These may be used in combination of two or more.
  • release agents such as fluorine resins, silicones, various waxes, various surfactants, and the like may be added or copolymerized.
  • the alignment layer also serves as a release layer.
  • the polarizer examples include an iodine polarizer, a dye polarizer using a dichroic dye, and a polyene polarizer.
  • the iodine-based polarizer and the dye-based polarizer are generally produced using a polyvinyl alcohol film. Any polarizer may be used in the production method of the present invention.
  • the polarizer is preferably composed of modified or unmodified polyvinyl alcohol and dichroic molecules.
  • a polarizer composed of modified or unmodified polyvinyl alcohol and a dichroic molecule reference can be made to, for example, the description in JP-A-2009-237376.
  • the film thickness of a polarizer should just be 50 micrometers or less, 30 micrometers or less are preferable and 20 micrometers or less are more preferable. Moreover, the film thickness of a polarizer should just normally be 1 micrometer or more, 5 micrometers or more, or 10 micrometers or more.
  • the production method of the present invention includes the following (1) to (5): (1) A transfer material including a temporary support and an optically anisotropic layer, wherein the optically anisotropic layer is directly on the temporary support or directly on another layer provided on the temporary support.
  • a transfer material which is a layer formed by polymerizing the liquid crystal compound by irradiating the polymerizable composition containing the applied liquid crystal compound with light; (2) adhering the transfer material to a laminate film on the surface opposite to the temporary support relative to the optically anisotropic layer; (3) peeling the temporary support from a laminate of the transfer material and the laminate film; (4) The surface obtained by the peeling of the laminate of the transfer body including the optically anisotropic layer and the laminate film obtained after peeling the temporary support is bonded to a film containing a polarizer. That; and (5) The laminate film is peeled off.
  • the laminate film has adhesiveness to the surface of the transfer material opposite to the temporary support with respect to the optically anisotropic layer, and at the same time, after the transfer body is bonded to the film containing the polarizer, it can be easily removed from the transfer body. Any material that can be peeled off may be used.
  • the laminate film should just consist of a laminate base material and an adhesion layer.
  • As the laminate film a commercially available laminate film may be used, or an adhesive may be applied to a separately prepared laminate substrate.
  • the surface opposite to the surface on which the laminate film is adhered to the transfer material preferably has a matte property. This is to make it difficult for the back surface of the temporary support and the laminate film to adhere to each other. For the matte property of the laminate film surface, the description in paragraph 0086 of JP2012-032424A can be referred to.
  • Cellulose ester eg, cellulose acetate, cellulose propionate, cellulose butyrate
  • polyolefin eg, norbornene polymer
  • poly (meth) acrylic acid ester eg, polymethyl) Methacrylate
  • polycarbonate polyester and polysulfone
  • norbornene polymers polyimide polymers and other plastic films, paper, aluminum foil, cloth and the like
  • cellulose esters and polyesters are preferable, polyesters are particularly preferable, and PEN and PET are particularly preferable among polyesters.
  • the thickness of the laminate substrate is preferably 3 to 500 ⁇ m, more preferably 10 to 200 ⁇ m, and particularly preferably 20 to 100 ⁇ m.
  • the laminate base material does not constitute a transfer material or a polarizing plate, but is finally peeled off, and there is no particular limitation on the performance required for transparency and refraction, so that it is as cheap as possible from the viewpoint of cost. It is also possible to use a simple material.
  • an adhesive layer having adhesiveness that adheres to the laminate support substrate and the transfer material (transfer body) but can be easily peeled off from the transfer body after adhesion is used. It is desirable that peeling from the transfer body is possible without leaving an influence on the transfer body after peeling. In addition, it is desirable that such properties do not change in the birefringence pattern manufacturing process described later.
  • the adhesive which added tackifier, a softening material, a crosslinking agent, a filler, an anti-aging agent etc. to rubber-type material, acrylic material, silicone type material, urethane type material, etc. Can be used.
  • the thickness of the adhesive layer is preferably from 0.1 to 100 ⁇ m, more preferably from 1 to 30 ⁇ m, and particularly preferably from 2 to 10 ⁇ m.
  • a laminate film Although it does not specifically limit as a laminate film, The thing etc. which installed the said adhesion layer in the said laminate base material can be used. Moreover, what laminated
  • a commercially available laminate film for example, EC series manufactured by Sumilon Co., Ltd. and PAC series manufactured by Sanei Kaken Co., Ltd. can be used as appropriate.
  • the temporary support is peeled from the laminate of the transfer material and the laminate film.
  • the method for peeling the temporary support is not particularly limited, but it is preferably performed at a speed at which the transfer body is not damaged.
  • the transfer material may be cut before peeling off the temporary support. For example, cutting the transfer material made in the width 1.5m or more rolled, 0.3 m 2 or less, 0.2 m 2 or less, 0.1 m 2 or less, 0.09 m 2, 0.05 m 2 or less, 0 .03M 2 or less, or 0.01m 2 or less order of magnitude, may be cut into any shape, such as square or rectangular.
  • the lower limit of the shape is not particularly limited, and may be a size that can be handled according to the purpose, but is usually about 0.0001 m 2 or more (about 1 cm 2 or more).
  • the outermost surface of the transfer body after peeling off the temporary support is preferably an alignment layer.
  • the outermost surface of the transfer body may be adhered to the polarizer in the film containing the polarizer or may be adhered to a layer other than the polarizer, but is preferably adhered to the polarizer.
  • the outermost surface of the transfer body is an alignment layer, and the alignment layer is bonded to the polarizer.
  • the alignment layer is a layer containing modified or unmodified polyvinyl alcohol and the polarizer contains modified or unmodified polyvinyl alcohol
  • the adhesion is particularly good.
  • the term “adhesion” may be adhesion or adhesion. Bonding may be performed through an adhesive layer.
  • the adhesive layer may be a layer containing an adhesive or a pressure-sensitive adhesive. That is, the transfer body and the film containing a polarizer need only be bonded or adhered to each other by an adhesive or an adhesive.
  • the adhesive is not particularly limited, but a polyvinyl alcohol adhesive, a boron compound aqueous solution, an epoxy compound curable adhesive that does not contain an aromatic ring in the molecule, as disclosed in JP-A-2004-245925, JP-A-2008-174667, an active energy ray curable adhesive comprising a photopolymerization initiator having a molar extinction coefficient of 400 or more at a wavelength of 360 to 450 nm and an ultraviolet curable compound as essential components, and JP2008-174667A (A) a (meth) acrylic compound having 2 or more (meth) acryloyl groups in the molecule, and (b) a hydroxyl group in the molecule A (meth) acrylic compound having only one polymerizable double bond, and (c) a phenol ethylene oxide-modified acrylate.
  • the polyvinyl alcohol adhesive is an adhesive containing modified or unmodified polyvinyl alcohol.
  • the polyvinyl alcohol-based adhesive may contain a crosslinking agent in addition to the modified or unmodified polyvinyl alcohol.
  • Specific examples of the adhesive include an aqueous solution of polyvinyl alcohol or polyvinyl acetal (eg, polyvinyl butyral) and a latex of a vinyl polymer (eg, polyvinyl chloride, polyvinyl acetate, polybutyl acrylate).
  • a particularly preferable adhesive is an aqueous solution of polyvinyl alcohol.
  • the polyvinyl alcohol is preferably completely saponified.
  • the thickness of the adhesive layer is preferably 0.01 to 10 ⁇ m, particularly preferably 0.05 to 5 ⁇ m in terms of dry film thickness.
  • the film including the polarizer to which the transfer body is adhered may be composed of only the polarizer, and may include other layers such as a protective film in addition to the polarizer.
  • the polarizing plate preferably includes a protective film.
  • a protective film may be provided on one or both surfaces of the polarizer to form a film containing the above polarizer.
  • a protective film may be provided in advance, preferably on the outermost surface opposite to the temporary support side as viewed from the alignment layer.
  • a protective film may be provided on one or both surfaces.
  • the protective film may be provided so as to be in direct contact with other layers, for example, by directly applying and drying the protective film-forming composition on the surface on which the protective film is provided. May be used to adhere to the surface.
  • the adhesive or pressure-sensitive adhesive the same adhesive or pressure-sensitive adhesive used for bonding the transfer body and the film containing the polarizer may be used.
  • a cellulose acylate polymer film As the protective film, a cellulose acylate polymer film, an acrylic polymer film, or a cycloolefin polymer film can be used.
  • the cellulose acylate polymer reference can be made to the description of the cellulose acylate resin in JP2011-237474A.
  • the cycloolefin-based polymer film the descriptions in JP2009-175222A and JP2009-237376A can be referred to.
  • moisture permeability can be imparted to the polarizing plate. Moisture permeable means the property that water does not pass but water vapor passes.
  • the film thickness of the protective film may be 100 ⁇ m or less, 50 ⁇ m or less, 30 ⁇ m or less, 20 ⁇ m or less, 10 ⁇ m or less, and may be 1 ⁇ m or more, 5 ⁇ m or more, and 10 ⁇ m or more.
  • the polarizing plate may include a hard coat layer.
  • the hard coat layer may be included as the outermost layer of the polarizing plate, and is preferably included in the outermost layer on the optically anisotropic layer side as viewed from the polarizer.
  • the hard coat layer refers to a layer that, when formed, increases the pencil hardness of the transparent support.
  • the pencil hardness (JIS K5400) after laminating the hard coat layer is preferably H or higher, more preferably 2H or higher, and most preferably 3H or higher.
  • the thickness of the hard coat layer is preferably 0.4 to 35 ⁇ m, more preferably 1 to 30 ⁇ m, and most preferably 1.5 to 20 ⁇ m.
  • JP 2012-103689 A For the specific composition, reference can be made to the description in JP 2012-103689 A.
  • composition of cellulose acetate solution ⁇ Cellulose acetate having an acetylation degree of 60.7 to 61.1% 100 parts by weight Triphenyl phosphate (plasticizer) 7.8 parts by weight Biphenyl diphenyl phosphate (plasticizer) 3.9 parts by weight Methylene chloride (first solvent) 336 parts by weight Methanol (second solvent) 29 parts by mass 1-butanol (third solvent) 11 parts by mass ⁇ ⁇
  • additive (A) 16 parts by mass of the following additive (A), 92 parts by mass of methylene chloride and 8 parts by mass of methanol were added and stirred while heating to prepare an additive (A) solution.
  • the additive amount of the additive (A) prepared by mixing 25 parts by mass of the additive (A) solution with 474 parts by mass of the cellulose acetate solution and sufficiently stirring to prepare the dope is 6. It was 0 mass part.
  • the obtained dope was cast using a band stretching machine. After the film surface temperature on the band reaches 40 ° C., the film is dried with warm air of 70 ° C. for 1 minute, and the film from the band is dried with 140 ° C. drying air for 10 minutes, and the residual solvent amount is 0.3% by mass.
  • a cellulose acetate film T1 (support 1) was prepared.
  • the width of the obtained long cellulose acetate film T1 was 1490 mm, and the thickness was 80 ⁇ m.
  • the in-plane retardation (Re) was 8 nm and the thickness direction retardation (Rth) was 78 nm.
  • ⁇ Preparation of transfer material 1> (Formation of alignment film 1) On the support prepared above, an alignment layer coating solution having the following composition was continuously applied with a # 14 wire bar. Drying was performed with warm air of 60 ° C. for 60 seconds, and further with warm air of 100 ° C. for 120 seconds. The degree of saponification of the modified polyvinyl alcohol used was 96.8%. The thickness of the obtained alignment film was 0.5 ⁇ m.
  • composition of coating solution for alignment layer 1 Modified polyvinyl alcohol (A) 10 parts by weight Water 308 parts by weight Methanol 70 parts by weight Isopropanol 29 parts by weight Photopolymerization initiator (Irgacure 2959, manufactured by BASF) 0.8 parts by weight ⁇ ⁇
  • the support on which the alignment layer was applied was subjected to a rubbing treatment on the alignment layer installation surface so as to align in parallel with the transport direction.
  • the rubbing roll was rotated at 450 rpm.
  • composition for forming optically anisotropic layer 1 The following composition was dissolved in 270 parts by mass of methyl ethyl ketone to prepare a coating solution.
  • Composition for forming optically anisotropic layer 1 Discotic liquid crystal compound (A) 80.0 parts by mass Discotic liquid crystal compound (B) 20.0 parts by mass Fluoro aliphatic group-containing polymer (1) 0.6 parts by mass Photopolymerization initiator (Irgacure 907, manufactured by BASF Corporation) ) 3.0 parts by mass Sensitizer (Kayacure DETX, manufactured by Nippon Kayaku Co., Ltd.) 1.0 part by mass Compound A 0.25 part by mass Compound AA 1.0 part by mass
  • the prepared coating solution was applied to the rubbing surface of the alignment layer 2 using a # 2.8 wire bar.
  • the coating amount was 4.8 mL / m 2 .
  • it heated for 300 second in a 120 degreeC thermostat and the discotic liquid crystal compound was orientated.
  • ultraviolet rays are irradiated for 1 minute to advance the crosslinking reaction, the discotic liquid crystal compound is polymerized and fixed, and an optically anisotropic layer is formed.
  • the film thickness of the optically anisotropic layer was 0.8 ⁇ m, the liquid crystal director angle on the support side was 0 °, and the liquid crystal director angle on the air interface side was 75 °.
  • the film contrast was 10,000, there was no orientation failure, and the adhesion was good. Film contrast, orientation failure, and adhesion were measured and evaluated as follows.
  • the liquid crystal compound of the optically anisotropic layer was reverse hybrid aligned.
  • ⁇ Preparation of transfer material 2> (Formation of alignment layer 2) An alignment layer coating solution having the following composition was continuously applied to the support 1 with a # 14 wire bar. Drying was performed with warm air of 60 ° C. for 60 seconds, and further with warm air of 100 ° C. for 120 seconds. The thickness of the obtained alignment film was 0.5 ⁇ m.
  • Composition of alignment layer coating solution ⁇ Modified polyvinyl alcohol (B) 10 parts by weight Water 371 parts by weight Methanol 119 parts by weight Glutaraldehyde 0.5 parts by weight Photopolymerization initiator (Irgacure 2959, manufactured by BASF) 0.3 parts by weight ⁇
  • the rubbing treatment was continuously performed on the prepared alignment layer. At this time, the longitudinal direction of the long film and the transport direction were parallel, and the rotation axis of the rubbing roller was 45 ° clockwise relative to the longitudinal direction of the film.
  • Formation of optically anisotropic layer 2 The coating amount of the coating liquid containing the liquid crystal compound having the following composition was changed so that the value of Re (0) measured using KOBRA21 ADH was 125 nm, and the rubbing surface of the prepared alignment layer 2 was coated with a wire bar. It was applied continuously. The conveyance speed (V) of the film was 20 m / min. In order to dry the solvent of the coating solution and to mature the orientation of the discotic liquid crystal compound, the coating liquid was heated with warm air of 130 ° C. for 90 seconds. Subsequently, UV irradiation was performed at 80 ° C. to form an optically anisotropic layer 2 with an alignment layer, whereby a transfer material 2 was obtained. The film thickness of the optically anisotropic layer was 1.0 ⁇ m.
  • Discotic liquid crystal compound (DLC1) 1 part by mass Discotic liquid crystal compound (A) 91 parts by mass Ethylene oxide modified trimethylolpropane triacrylate (V # 360, manufactured by Osaka Organic Chemical Co., Ltd.) 5 parts by mass photopolymerization initiator (Irga Cure 907, manufactured by BASF Corp.) 3 parts by mass sensitizer (Kaya Cure DETX, manufactured by Nippon Kayaku Co., Ltd.) 1 part by mass pyridinium salt (A) 0.5 parts by mass fluoropolymer (FP1) 0.2 parts by mass fluorine Polymer (FP2) 0.1 parts by mass Solvent (methyl ethyl ketone) (MEK) 241 parts by mass ⁇ ⁇
  • DLC1 Discotic liquid crystal compound
  • A 91 parts by mass Ethylene oxide modified trimethylolpropane triacrylate
  • V # 360 manufactured by Osaka Organic Chemical Co., Ltd.
  • mass photopolymerization initiator
  • the direction of the slow axis of the produced optically anisotropic layer 2 was orthogonal to the rotation axis of the rubbing roller. That is, the slow axis was 45 ° clockwise relative to the longitudinal direction of the support.
  • the average inclination angle of the disc surface of the discotic liquid crystalline molecules with respect to the film surface was 90 °, and it was confirmed that the discotic liquid crystal was aligned perpendicular to the film surface.
  • optically anisotropic layer 4 was formed.
  • the film thickness of the optically anisotropic layer was 1.3 ⁇ m.
  • the optically anisotropic layer 5 was prepared by using the following optically anisotropic layer 5-1 and optically anisotropic layer 5-2. Similarly to the production of the transfer material 1, a laminate of the support 1 and the alignment layer 1 was prepared, and the alignment layer 1 was continuously rubbed. At this time, the longitudinal direction of the long film and the conveying direction are parallel, and the angle formed between the longitudinal direction of the film and the rotation axis of the rubbing roller is 75 ° (clockwise) (when the longitudinal direction of the film is 90 °). The rotation axis of the rubbing roller is 15 °).
  • optically anisotropic layer 5-1 A coating solution for the optically anisotropic layer 5-1 containing a discotic liquid crystal compound having the following composition was continuously applied to the rubbing surface of the alignment layer 1 with a # 5 wire bar. In order to dry the solvent of the coating solution and to mature the orientation of the discotic liquid crystal compound, the film was heated with warm air of 115 ° C. for 90 seconds, then heated with warm air of 80 ° C. for 60 seconds, and irradiated with UV at 80 ° C. The alignment of the liquid crystal compound was fixed. The thickness of the obtained optically anisotropic layer was 2.0 ⁇ m.
  • the average tilt angle of the disc surface of the discotic liquid crystal compound with respect to the film surface was 90 °, and it was confirmed that the discotic liquid crystal compound was aligned perpendicular to the film surface.
  • the angle of the slow axis was parallel to the rotation axis of the rubbing roller, and was 15 ° when the film longitudinal direction was 90 ° (film width direction was 0 °).
  • Discotic liquid crystal compound 80 parts by mass Discotic liquid crystal compound (B) 20 parts by mass Ethylene oxide modified trimethylolpropane triacrylate (V # 360, manufactured by Osaka Organic Chemical Co., Ltd.) 10 parts by mass photopolymerization initiator (IRGA) Cure 907, manufactured by BASF) 3 parts by mass pyridinium salt (B) 0.9 parts by mass
  • boronic acid-containing compound 0.08 parts by mass polymer
  • FP1-2 1.2 parts by mass fluoropolymer 0. 3 parts by weight methyl ethyl ketone 183 parts by weight cyclohexanone 40 parts by weight ⁇
  • optically anisotropic layer 5-2 (Formation of optically anisotropic layer 5-2) The manufactured optically anisotropic layer 5-1 was continuously rubbed. At this time, the longitudinal direction of the long film and the transport direction are parallel, and the angle formed between the longitudinal direction of the film and the rotation axis of the rubbing roller is ⁇ 75 ° (counterclockwise) (the longitudinal direction of the film is 90 °). Then, the rotation axis of the rubbing roller is 165 °).
  • a coating solution having the following composition was continuously applied onto the optically anisotropic layer 5-1 subjected to the rubbing treatment with a # 2.2 wire bar.
  • the liquid crystal compound was aligned by heating at 60 ° C. for 60 seconds and UV irradiation at 60 ° C.
  • the thickness of the obtained optically anisotropic layer 5-2 was 0.8 ⁇ m.
  • a laminate of the optically anisotropic layer 5-1 and the optically anisotropic layer 5-2 was used as the optically anisotropic layer 5.
  • the average inclination angle of the long axis of the rod-like liquid crystal compound with respect to the film surface was 0 °, and it was confirmed that the liquid crystal compound was aligned horizontally with respect to the film surface.
  • the angle of the slow axis was orthogonal to the rotation axis of the rubbing roller, and was 75 ° when the film longitudinal direction was 90 ° (film width direction was 0 °).
  • composition of coating solution for optically anisotropic layer 5-2 ⁇ Polymerizable liquid crystal compound (LC-1-1) 80 parts by mass Polymerizable liquid crystal compound (LC-2) 20 parts by mass Photopolymerization initiator (Irgacure 907, manufactured by BASF) 3 parts by mass sensitizer (Kayacure DETX, Japan) 1 part by weight fluoropolymer (FP4) 0.3 part by weight methyl ethyl ketone 193 parts by weight cyclohexanone 50 parts by weight ⁇ ⁇
  • ⁇ Preparation of transfer material 6> (Formation of rubbing alignment layer) As in the preparation of the transfer material 1, a laminate of the support 1 and the alignment layer 1 was prepared, and the alignment layer 1 of this laminate was continuously rubbed. At this time, the longitudinal direction of the long film and the transport direction are parallel, and the angle formed by the film longitudinal direction and the rotation axis of the rubbing roller is 15 ° (clockwise) (when the film longitudinal direction is 90 °). The rotation axis of the rubbing roller is 75 °). Thereafter, the optically anisotropic layer 6 was prepared in the same manner as the transfer material 5 except that the coating solution for the optically anisotropic layer 5-1 was changed to the coating solution for the optically anisotropic layer 6-1 described below. A transfer material 6 including (a laminated body of the optically anisotropic layer 5-1 and the optically anisotropic layer 6-1) was produced.
  • composition of coating solution for optically anisotropic layer 6-1 Polymerizable liquid crystal compound (LC-1-1) 80 parts by mass Polymerizable liquid crystal compound (LC-2) 20 parts by mass Photopolymerization initiator (Irgacure 907, manufactured by BASF) 3 parts by mass polymer (A) 0.6 mass Part fluoropolymer (FP1) 0.3 part by weight methyl ethyl ketone 183 parts by weight cyclohexanone 40 parts by weight ⁇ ⁇
  • Transfer materials 7 to 12 were obtained in the same manner as the transfer materials 1 to 6 except that the support 1 was changed to Fuji Film PET (thickness 75 ⁇ m).
  • Transfer materials 13 and 14 were obtained in the same manner as the transfer material 9 (optically anisotropic layer 3) and transfer material 12 (optically anisotropic layer 6), respectively, except that no alignment layer was provided.
  • acrylic resin sheet T2 The acrylic resin described below was used. This acrylic resin is commercially available. Dianal BR88 (trade name), manufactured by Mitsubishi Rayon Co., Ltd., mass average molecular weight 1500,000 (hereinafter referred to as acrylic resin AC-1). (UV absorber) The following ultraviolet absorbers were used. UV agent 1: Tinuvin 328 (BASF)
  • Dope B preparation The following composition was put into a mixing tank and stirred while heating to dissolve each component to prepare Dope B.
  • Dope B composition Acrylic resin AC-1 100 parts by weight UV absorber UV agent 1 2 parts by weight Dichloromethane 300 parts by weight Ethanol 40 parts by weight
  • the prepared dope was uniformly cast from a casting die onto a stainless steel endless band (casting support) having a width of 2000 mm.
  • the residual solvent amount in the dope reached 40% by mass, the polymer film was peeled off from the casting support, transported without stretching, and dried at 130 ° C. in a drying zone.
  • the film thickness of the obtained acrylic resin sheet T2 was 40 ⁇ m.
  • One side of the resin sheet T2 thus obtained is subjected to corona treatment, and the corona treatment surface is bonded to one side of the polarizer using a 3% aqueous solution of PVA (manufactured by Kuraray Co., Ltd., PVA-117H) as an adhesive. It was.
  • PVA manufactured by Kuraray Co., Ltd., PVA-117H
  • Laminated transfer materials 1 to 22 and optically anisotropic layer surfaces of transfer materials 1 to 22 were bonded to the other side of the polarizer using a commercially available acrylic adhesive (UV-3300 manufactured by Toagosei Co., Ltd.). . After bonding, the laminate film of the transfer material with laminate was peeled off. The laminate film could be easily peeled off at the interface between the adhesive layer and the optically anisotropic alignment layer.
  • the obtained polarizing plates were designated as polarizing plates 1 to 44, respectively.
  • the polarizing plate on the display surface side was peeled off from a commercially available liquid crystal television (IPS-mode slim type 42-inch liquid crystal television. The distance between the backlight-side polarizing plate surface and the backlight was 1.5 mm).
  • the polarizing plates 1 to 28 were re-bonded to the liquid crystal cell via an adhesive so that the optically anisotropic layer side described in Table 3 below was disposed on the liquid crystal cell side with respect to the polarizing film.
  • the reassembled LCD TV was kept in an environment of 40 ° C. and 80% relative humidity for 20 days, then moved to an environment of 25 ° C. and 60% relative humidity, kept on in a black display state, and visually observed after 48 hours. As a result of evaluating the color change, there was little color change from the licking direction, and a thin display device was obtained.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Polarising Elements (AREA)

Abstract

La présente invention concerne un procédé de production d'une plaque de polarisation, la plaque de polarisation comprenant une couche optiquement anisotrope constituée d'une composition contenant un composé de cristaux liquides. Le procédé de production comprend les étapes consistant à : préparer un matériau de transfert qui contient un support temporaire et une couche optiquement anisotrope, la couche optiquement anisotrope du matériau de transfert étant constituée d'une composition polymérisable qui contient un composé de cristaux liquides et qui est appliquée directement au support temporaire ou directement à une autre couche disposée sur le support temporaire ; lier une surface du matériau de transfert à un film stratifié, ladite surface se situant sur le côté du support temporaire à l'opposé de la couche optiquement anisotrope ; retirer le support temporaire d'un stratifié du matériau de transfert et du film stratifié ; lier une surface dudit stratifié à un film qui contient un polariseur, la surface étant obtenue au moyen du retrait susmentionné ; et retirer le film stratifié. Ledit procédé de production susmentionné permet de lier la couche optiquement anisotrope au polariseur au moyen d'une configuration minimale.
PCT/JP2014/070156 2013-08-01 2014-07-31 Procédé de production d'une plaque de polarisation WO2015016297A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015529611A JPWO2015016297A1 (ja) 2013-08-01 2014-07-31 偏光板の製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-160860 2013-08-01
JP2013160860 2013-08-01

Publications (1)

Publication Number Publication Date
WO2015016297A1 true WO2015016297A1 (fr) 2015-02-05

Family

ID=52431824

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/070156 WO2015016297A1 (fr) 2013-08-01 2014-07-31 Procédé de production d'une plaque de polarisation

Country Status (3)

Country Link
JP (1) JPWO2015016297A1 (fr)
TW (1) TW201506469A (fr)
WO (1) WO2015016297A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017161642A (ja) * 2016-03-08 2017-09-14 富士フイルム株式会社 転写シート、転写シートの製造方法、光学積層体、および光学積層体の製造方法
JPWO2021033639A1 (fr) * 2019-08-16 2021-02-25
JPWO2021182248A1 (fr) * 2020-03-09 2021-09-16

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114410157B (zh) * 2022-02-23 2023-09-22 四川龙华光电薄膜股份有限公司 一种配向涂布液及其应用

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10253826A (ja) * 1997-03-17 1998-09-25 Sanritsutsu:Kk 光学異方性複合偏光板
JP2002156526A (ja) * 2000-11-21 2002-05-31 Konica Corp 光学異方性フィルム、その製造方法及び偏光板の製造方法
JP2005070096A (ja) * 2003-08-25 2005-03-17 Sumitomo Chemical Co Ltd 位相差板一体型偏光板、その製造方法及び液晶表示装置
JP2007298967A (ja) * 2006-04-03 2007-11-15 Sumitomo Chemical Co Ltd フィルムおよびフィルムの製造方法、並びにその利用
JP2008009403A (ja) * 2006-05-30 2008-01-17 Nippon Oil Corp 楕円偏光板、楕円偏光板の製造方法および液晶表示装置
JP2008183812A (ja) * 2007-01-30 2008-08-14 Nippon Oil Corp 液晶フィルムの製造方法および光学素子用積層フィルム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10253826A (ja) * 1997-03-17 1998-09-25 Sanritsutsu:Kk 光学異方性複合偏光板
JP2002156526A (ja) * 2000-11-21 2002-05-31 Konica Corp 光学異方性フィルム、その製造方法及び偏光板の製造方法
JP2005070096A (ja) * 2003-08-25 2005-03-17 Sumitomo Chemical Co Ltd 位相差板一体型偏光板、その製造方法及び液晶表示装置
JP2007298967A (ja) * 2006-04-03 2007-11-15 Sumitomo Chemical Co Ltd フィルムおよびフィルムの製造方法、並びにその利用
JP2008009403A (ja) * 2006-05-30 2008-01-17 Nippon Oil Corp 楕円偏光板、楕円偏光板の製造方法および液晶表示装置
JP2008183812A (ja) * 2007-01-30 2008-08-14 Nippon Oil Corp 液晶フィルムの製造方法および光学素子用積層フィルム

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017161642A (ja) * 2016-03-08 2017-09-14 富士フイルム株式会社 転写シート、転写シートの製造方法、光学積層体、および光学積層体の製造方法
EP3428699A4 (fr) * 2016-03-08 2019-01-23 FUJIFILM Corporation Feuille de transfert, procédé de production de feuille de transfert, stratifié optique et procédé de production de stratifié optique
US10688701B2 (en) 2016-03-08 2020-06-23 Fujifilm Corporation Transfer sheet, method for producing transfer sheet, optical laminate, and method for producing optical laminate
JPWO2021033639A1 (fr) * 2019-08-16 2021-02-25
WO2021033639A1 (fr) * 2019-08-16 2021-02-25 富士フイルム株式会社 Procédé de production d'un film optique
JPWO2021182248A1 (fr) * 2020-03-09 2021-09-16
WO2021182248A1 (fr) * 2020-03-09 2021-09-16 富士フイルム株式会社 Composition, procédé de production de film optique et film optique
CN115244437A (zh) * 2020-03-09 2022-10-25 富士胶片株式会社 组合物、光学膜的制造方法及光学膜
JP7449363B2 (ja) 2020-03-09 2024-03-13 富士フイルム株式会社 組成物、光学フィルムの製造方法、光学フィルム

Also Published As

Publication number Publication date
TW201506469A (zh) 2015-02-16
JPWO2015016297A1 (ja) 2017-03-02

Similar Documents

Publication Publication Date Title
US7301594B2 (en) Optical compensator for a liquid crystal display
WO2014189041A1 (fr) Plaque polarisante et procédé pour sa production, et matériau de film optique
KR101377911B1 (ko) 위상차 필름, 휘도 향상 필름, 편광판, 위상차 필름의 제조 방법 및 액정 표시 장치
US20090040454A1 (en) Optically anisotropic film, brightness increasing film, laminated optical film, and image display device using the same
WO2014199934A1 (fr) Plaque polarisante, procédé de production de plaque polarisante, matière de transfert pour production de plaque polarisante et matière de transfert
WO2015141818A1 (fr) Composition, membrane de réflexion de lumière, film d'amélioration de luminosité, unité de rétroéclairage, et dispositif d'affichage à cristaux liquides
WO2015046399A1 (fr) Procédé de fabrication de plaque polarisante
US20220214484A1 (en) Optically anisotropic layer, optical film, polarizing plate, and image display device
KR20180101470A (ko) 광학 필름, 편광판 및 화상 표시 장치
JPWO2018123725A1 (ja) 円偏光板、有機エレクトロルミネッセンス表示装置
WO2015016297A1 (fr) Procédé de production d'une plaque de polarisation
JP2009288440A (ja) 位相差フィルム、位相差フィルムの製造方法、偏光板および液晶表示装置
US20160047963A1 (en) Polarizing plate and method for producing same, and transfer material
WO2015068678A1 (fr) Plaque de polarisation et procédé de fabrication de plaque de polarisation
WO2015016296A1 (fr) Procédé de production d'une plaque de polarisation
JP2008122885A (ja) 位相差フィルム、および、偏光板
WO2014148408A1 (fr) Matériau de film optique, film optique, procédé permettant de fabriquer un polariseur et polariseur
JP4738280B2 (ja) 光学補償フィルム、偏光板及び液晶表示装置
JP2014182311A (ja) 偏光板およびその製造方法
JP2014182217A (ja) 光学フィルム材料
WO2015068647A1 (fr) Matériau de film optique, procédé pour fabriquer un film optique, et procédé pour fabriquer une plaque de polarisation
JP2005121827A (ja) 位相差板の製造方法および液晶表示装置
JP2009258606A (ja) 偏光板及びそれを用いた液晶表示装置
JP5552087B2 (ja) Ｉｐｓ又はｆｆｓ型液晶表示装置
CN117388971A (zh) 圆偏振片及图像显示装置

Legal Events

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

Ref document number: 14832119

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2015529611

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14832119

Country of ref document: EP

Kind code of ref document: A1