JP2014006421A - Optical film, 3d image display device, and 3d image display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an innovative optical film that contributes to improvement in the characteristics of the angle of a field of view of a 3D image display device, to provide a 3D image display device using the same, and also to provide a 3D image display system.SOLUTION: An optical film comprises: a transparent support; an orientation film; and a pattern optical anisotropic layer including a first phase difference area and a second phase difference area different from each other at least in in-plane slow axis direction or in-plane retardation and arranged alternately within the plane. The pattern optical anisotropic layer uses a composition that includes at least one type of chemical compound that reacts by the application of energy. The optical film is formed using a composition having as its main constituent a rod-like liquid crystalline compound that has a polymerizable group on a pattern orientation film formed by a rubbing process and the process of applying energy to part of an area.

Description

  The present invention relates to an optical film, a 3D image display device, and a 3D image display system, which have an optically anisotropic layer having a high-definition orientation pattern, are easy to manufacture, and have improved display performance and light resistance such as a luminance reduction rate. About.

  A 3D image display device that displays a stereoscopic image requires an optical member for making the right-eye image and the left-eye image into circularly polarized images in opposite directions, for example. For example, such an optical member uses a pattern retardation film in which regions having different slow axes and retardations are regularly arranged in a plane.

  Conventionally, a pattern optical compensation film formed using a liquid crystal compound has been proposed (for example, Patent Documents 1 and 2). These are so-called in-cell type optical compensation films and the like disposed inside the liquid crystal cell, and are members for accurately compensating the liquid crystal cell. Therefore, the alignment form of the liquid crystal compound to be used is also a form suitable for optical compensation, and is not suitable for use in the optical member of the 3D image display device.

  Patent Document 3 discloses a 2D / 3D switching type liquid crystal display device having a patterned retardation plate, and discloses using a UV curable liquid crystalline compound solution as a material of the patterned retardation plate. Yes. However, details of the liquid crystal compound material are not described, and use of a rod-like liquid crystal compound is not disclosed. Further, in Patent Document 3, the patterned retardation plate is used as a parallax barrier means, and is used as the optical member for forming right-eye and left-eye circularly polarized images and the like. is not. Patent Document 4 discloses a liquid crystal device having an optically anisotropic layer formed by using first and second alignment films having different alignment regulating forces. Although the use of a liquid crystalline polymer material for the formation of the optically anisotropic layer is disclosed, the details thereof are not described, and the use of a rod-like liquid crystalline compound is not disclosed. In addition, Patent Document 5 proposes a manufacturing method using a photo-alignment film of an optical filter for a stereoscopic image display device. In the examples, a polycinnamate polymer is used as the alignment film, and a rod-like liquid crystal compound is used. A manufacturing method for obtaining a patterned retardation film by utilizing the above-described method is disclosed.

JP 2006-276849 A JP 2007-71952 A JP 2004-302409 A JP 2007-163722 A WO2010 / 090429 A2 Publication

As in the cited document 5, in the conventional method for producing a pattern retardation film, it is necessary to irradiate polarized light a plurality of times through an exposure mask divided into patterns on the photo-alignment film. In this case, the operation is complicated. In addition, it has been clarified that a decrease in production efficiency due to a decrease in exposure energy due to transmission through the polarizing plate is unavoidable. Further, it has been clarified that the exposure mask is required to be provided with a patterned polarizer with high accuracy, and the mask manufacturing cost is increased.
An object of the present invention is to provide a novel optical film and a method for producing a novel optical film that is simpler and more efficient than a conventional method for producing a patterned retardation film.

  As a result of intensive studies by the present inventors for the purpose of solving the above-described problems, a film formed from a composition containing at least one compound that reacts by applying energy is subjected to rubbing treatment and energy for a part of the region. By using the pattern alignment film obtained by applying the treatment, the orientation direction, the orientation state, and the in-plane letter of the rod-like liquid crystalline compound in the region to which energy is applied and the region to which energy is not applied. It has been found that retardation regions having different at least one of the foundation Re can be produced. An object of the present invention is to provide a novel optical film and a method for producing a new optical film that is simpler and more efficient than a conventional method for producing a patterned retardation film.

Specific means for solving the above problems are the means [1] below, preferably the means [2] to [20] below. [1] A first retardation region and a second retardation region in which at least one of the transparent support, the alignment film, the in-plane slow axis direction and the in-plane retardation are different from each other and are alternately arranged in the plane A pattern optically anisotropic layer containing, and
The patterned optically anisotropic layer uses a composition containing at least one compound that reacts by applying energy, and is polymerized on the pattern alignment film formed by rubbing and applying energy to a part of the region. An optical film formed by using a composition containing, as a main component, a rod-like liquid crystalline compound having a functional group.
[2] The optical film according to [1], wherein the energy is non-polarized ultraviolet rays.
[3] The optical film of [1] or [2], wherein the rod-like liquid crystalline compound having a polymerizable group is fixed in a horizontal alignment state.
[4] The optical film of any one of [1] to [3], wherein the compound that reacts upon application of energy is a photoreactive compound.
[5] The optical film of [4], wherein the photoreactive compound is a photoacid generator.
[6] The optical film according to [4], wherein the photoreactive compound is polyvinyl cinnamate.
[7] A polarizing film is further provided, and the in-plane slow axis of the first and second retardation regions and the absorption axis of the polarizing film form an angle of ± 45 °, respectively [1] to [6] Any optical film.
[8] The total value of the in-plane retardation Re (550) at a wavelength of 550 nm of all the members including the optically anisotropic layer disposed on one surface of the polarizing film is 110 to 160 nm. [7 ] Optical film.
[9] The optical film of any one of [1] to [8], wherein the transparent support contains an ultraviolet absorber.
[10] The optical film of any one of [1] to [9], further having a functional layer.
[11] The optical film according to [10], wherein the functional layer contains an ultraviolet absorber.
[12] A 3D image display device having at least a display panel driven based on an image signal and the optical film of any one of [1] to [11] disposed on the viewing side of the display panel.
[13] The 3D image display device according to [12], wherein the display panel includes a liquid crystal cell.
[14] A 3D image display system including at least the 3D image display device according to [12] or [13] and a polarizing plate disposed on a viewing side of the 3D image display device, and allowing a stereoscopic image to be visually recognized through the polarizing plate.
[15] First retardation region and second retardation region in which at least one of the in-plane slow axis direction and in-plane retardation is different from each other and is alternately arranged in the plane A method for producing an optical film comprising: a patterned optically anisotropic layer comprising:
1) Applying a composition containing at least one compound that reacts upon application of energy on a transparent support to create a film 2) Rubbing the film in one direction 3) Energizing a partial region of the film 4) Step 5) of applying a composition mainly composed of a rod-like liquid crystalline compound having a polymerizable group on the pattern alignment film obtained by rubbing and applying energy to the film. Step 6 of forming a first retardation region and a second retardation region in which at least one of in-plane slow axis direction and in-plane retardation is different from each other by heating 6) rod-like liquid crystal having a polymerizable group by applying energy The manufacturing method of an optical film including the process of fixing a compound.
[16] including first and second orientation control regions;
The first and second alignment control regions are alternately arranged in the plane, and each include a compound that reacts by applying energy at different contents, and is a pattern alignment film.
[17] The pattern alignment film according to [16], wherein the first and second alignment control regions are formed by a rubbing process and a process for applying energy.
[18] A method for producing a pattern alignment film in which the first and second alignment control regions are alternately arranged in the plane,
1) Applying a composition containing at least one compound that reacts by applying energy on the transparent support to form a film 2) Rubbing the film in one direction 3) Applying to a partial region of the film On the other hand, the manufacturing method of the pattern orientation film including the process of providing energy.
[19] The method for producing a pattern alignment film according to [18], wherein the energy is one non-polarized ultraviolet irradiation.
[20] The method for producing a pattern alignment film according to [18] and [19], wherein the step of applying energy is a step of irradiating non-polarized light perpendicular to the film.

  ADVANTAGE OF THE INVENTION According to this invention, the novel optical film which contributes to the improvement of the viewing angle characteristic of 3D image display apparatus, its simple manufacturing method, 3D image display apparatus using the same, and 3D image display system are provided. it can.

It is a cross-sectional schematic diagram of an example of the optical film of this invention. It is the schematic of an example of the relationship between a polarizing film and an optically anisotropic layer. It is the schematic of an example of the relationship between a polarizing film and an optically anisotropic layer. It is an upper surface schematic diagram of an example of the pattern optical anisotropic layer concerning this invention. It is a cross-sectional schematic diagram of the other example of the optical film of this invention. It is a cross-sectional schematic diagram of an example of the structural example of the 3D image display apparatus of this invention. It is a figure which shows the evaluation result of the optical characteristic of the optical film produced in the Example. It is the schematic diagram which showed an example of the exposure mask.

  Hereinafter, the present invention will be described in detail. In the present specification, a numerical range represented by using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value. First, terms used in this specification will be described.

Re (λ) and Rth (λ) represent in-plane retardation at wavelength λ and retardation in the thickness direction, respectively. Re (λ) is measured with KOBRA 21ADH or WR (manufactured by Oji Scientific Instruments Co., Ltd.) by making light having a wavelength of λ nm incident in the normal direction of the film. In selecting the measurement wavelength λnm, the wavelength selection filter can be exchanged manually, or the measurement value can be converted by a program or the like. When the film to be measured is represented by a uniaxial or biaxial refractive index ellipsoid, Rth (λ) is calculated by the following method.
Rth (λ) is the film surface when Re (λ) is used and the in-plane slow axis (determined by KOBRA 21ADH or WR) is the tilt axis (rotation axis) (if there is no slow axis) Measurement is performed at a total of 6 points by injecting light of wavelength λ nm from each inclined direction in steps of 10 degrees from the normal direction to 50 ° on one side with respect to the film normal direction (with any rotation direction as the rotation axis). Then, KOBRA 21ADH or WR is calculated based on the measured retardation value, the assumed value of the average refractive index, and the input film thickness value. In the above case, in the case of a film having a direction in which the retardation value is zero at a certain tilt angle with the in-plane slow axis from the normal direction as the rotation axis, retardation at a tilt angle larger than the tilt angle. The value is calculated by KOBRA 21ADH or WR after changing its sign to negative. The retardation value is measured from two inclined directions with the slow axis as the tilt axis (rotation axis) (if there is no slow axis, the arbitrary direction in the film plane is the rotation axis). Rth can also be calculated from the following formula (A) and formula (B) based on the value, the assumed value of the average refractive index, and the input film thickness value.

なお、上記のＲｅ（θ）は法線方向から角度θ傾斜した方向におけるレターデーション値を表す。また、式（Ａ）におけるｎｘは、面内における遅相軸方向の屈折率を表し、ｎｙは、面内においてｎｘに直交する方向の屈折率を表し、ｎｚは、ｎｘ及びｎｙに直交する方向の屈折率を表す。ｄは膜厚である。
Ｒｔｈ＝（（ｎｘ＋ｎｙ）／２−ｎｚ）×ｄ・・・・・・・・・・・式（Ｂ）

Note that Re (θ) represents a retardation value in a direction inclined by an angle θ from the normal direction. In the formula (A), nx represents the refractive index in the slow axis direction in the plane, ny represents the refractive index in the direction orthogonal to nx in the plane, and nz is the direction orthogonal to nx and ny. Represents the refractive index. d is the film thickness.
Rth = ((nx + ny) / 2−nz) × d (Equation (B)

When the film to be measured is a film that cannot be expressed by a uniaxial or biaxial refractive index ellipsoid, that is, a film without a so-called optical axis, Rth (λ) is calculated by the following method. Rth (λ) is from −50 ° to the normal direction of the film, with Re (λ) being the in-plane slow axis (determined by KOBRA 21ADH or WR) as the tilt axis (rotary axis). Measured at 11 points by making light of wavelength λ nm incident in 10 ° steps up to + 50 °, and based on the measured retardation value, average refractive index assumption value and input film thickness value. KOBRA 21ADH or WR is calculated. In the above measurement, as the assumed value of the average refractive index, values in the polymer handbook (John Wiley & Sons, Inc.) and catalogs of various optical films can be used. If the average refractive index is not known, it can be measured with an Abbe refractometer. The 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), 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.
Moreover, the sum total of retardation in this specification represents the value which measured the film of multiple layers with the said measuring method.

Moreover, in this specification, when there is no special mention about a measurement wavelength, a measurement wavelength is 550 nm. In this specification, “visible light” means 380 nm to 780 nm, and the ultraviolet region means 10 nm to 400 nm.
Further, in the present specification, the angle (for example, an angle such as “90 °”) and the relationship (for example, “orthogonal”, “parallel”, “vertical”, “intersect at 45 °”, etc.) The range of errors allowed in the technical field to which the For example, it means that 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.

1. Optical film The optical film of the present invention is a first retardation region in which at least one of the transparent support, the alignment film, the in-plane slow axis direction and the in-plane retardation are different from each other and are alternately arranged in the plane. And a patterned optically anisotropic layer including a second retardation region, wherein the patterned optically anisotropic layer uses a composition containing at least one compound that reacts upon application of energy, and a rubbing treatment and a part of the layer It is formed using the composition which has as a main component the rod-shaped liquid crystalline compound which has a polymeric group on the pattern orientation film formed by the process which provides an area | region with energy.

  A schematic cross-sectional view of an example of the optical film of the present invention is shown in FIG. In the drawing, the relative relationship between the thicknesses of the respective layers does not necessarily coincide with the relative relationship between the thicknesses of the respective layers of the actual liquid crystal display device. The optical film 10 shown in FIG. 1 has a transparent support 16, an alignment film 14, and a patterned optical anisotropic layer 12.

  As a result of intensive studies by the present inventor, a film applied with a composition containing at least one compound that reacts by applying energy on a transparent support is subjected to a rubbing treatment, and energy is applied to the film. The compound reacting by the application of energy contained decomposes or reacts, and at least one of the orientation direction, orientation state, and in-plane retardation Re of the rod-like liquid crystalline compound with respect to the orientation treatment direction formed by rubbing treatment I found it to change. In addition, by applying energy application to a partial region of the film, the alignment direction, alignment state, and in-plane letter of the rod-like liquid crystalline compound can be obtained without performing energy application multiple times. It was found that patterned optically anisotropic layers having different at least one of the foundation Re can be produced. Thereby, the number of processes can be reduced.

(Alignment film)
The alignment film 14 is disposed between the support 16 and the patterned optically anisotropic layer 12.
In addition, the alignment film for forming the patterned optically anisotropic layer may be referred to as a pattern alignment film. The pattern alignment film in the present specification includes the first and second alignment control regions, and includes the first and second alignment control regions. The second alignment control regions are alternately arranged in the plane and are alignment films containing compounds that react by applying energy at different contents, and usually 1) react by applying energy on the transparent support. Applying a composition containing at least one compound to form a film, 2) rubbing the film in one direction, and 3) applying energy to a partial region of the film. This is an alignment film manufactured through the process. On the other hand, the alignment film 14 included in the optical film of the present invention may be such a pattern alignment film, for example, an alignment film in which the pattern has disappeared due to the application of energy when fixing the rod-like liquid crystalline compound. There may be.

The rubbing treatment is generally carried out by rubbing the surface of a film formed of a composition containing a polymer as a main component and containing at least one compound that reacts by applying energy with a paper or cloth in a certain direction several times. Can do. A general method of rubbing is described in, for example, “Liquid Crystal Handbook” (issued by Maruzen, October 30, 2000).
In order to bond a long polarizing film with an absorption axis in the longitudinal direction, a film is formed on a support made of a long polymer film, and the film is oriented in a direction of 45 ° with respect to the longitudinal direction. It is preferable to form by continuous rubbing treatment.

In the treatment for imparting energy, energy is imparted on a film formed from a composition containing at least one compound that reacts by imparting energy applied on the transparent support, and the compound that reacts by imparting energy is decomposed or decomposed. React.
Energy includes energy from heat of 40 to 200 ° C., energy such as light having a wavelength of 190 to 1200 nm (preferably energy from heat of 60 to 150 ° C., energy such as light having a wavelength of 190 to 400 nm). Specific examples of the energy include visible light, ultraviolet light, far ultraviolet light, electron beam, X-ray, and ultraviolet light, and ultraviolet light is particularly preferable. In the present invention, the conventional photoreactive compound does not use a photo-alignment reaction that aligns along polarized light, and the polarizing filter for obtaining polarized light loses light energy. Preferably there is.

  Examples of the compound that reacts upon application of energy include a heat-reactive compound and a photoreactive compound. Among these, a photoreactive compound is preferable. Examples of the photoreactive compound include a photoacid generator and polyvinyl cinnamate.

  An example of the treatment for imparting energy is a heat treatment in which heat of 40 to 200 ° C. is applied to a film formed from a composition containing at least one compound that reacts by imparting energy. Specifically, a plurality of actions that affect the alignment control of the rod-like liquid crystalline compound described later are used, and then, by eliminating one of the actions by an external stimulus (heat treatment, etc.), the predetermined alignment control action is controlled. It is a way to do it. For example, the rod-like liquid crystalline compound is brought into a predetermined orientation state by a combined action of the orientation control ability by rubbing treatment on the film and the orientation control ability of the orientation controlling agent contained in the composition containing the rod-like liquid crystalline compound. After fixing and forming one phase difference region, any action (for example, action by the alignment control agent) is lost by external stimulation (heat treatment, etc.), and other orientation control action (action by rubbing treatment) is performed. Dominate, thereby realizing another orientation state and fixing it to form the other retardation region. For example, an onium salt that is a pyridinium compound or an imidazolium compound is unevenly distributed on the surface of the pattern alignment film of the hydrophilic polyvinyl alcohol because the pyridinium group or the imidazolium group is hydrophilic. In particular, when a pyridinium group is further substituted with an amino group that is a substituent of an acceptor of a hydrogen atom, intermolecular hydrogen bonds are generated with polyvinyl alcohol, resulting in uneven distribution on the pattern alignment film surface. At the same time, due to the effect of hydrogen bonding, the pyridinium derivative is oriented in a direction perpendicular to the main chain of the polyvinyl alcohol, thereby promoting vertical orientation. Since the pyridinium derivative has a plurality of aromatic rings in the molecule, a strong intermolecular π-π interaction occurs between the rod-like liquid crystalline compound and the pattern alignment film of the rod-like liquid crystalline compound. Induces vertical alignment near the interface. In particular, when a hydrophobic aromatic ring is connected to a hydrophilic pyridinium group, it also has an effect of inducing vertical alignment due to the hydrophobic effect. However, the effect is that when heated above a certain temperature, the hydrogen bonds are broken, the density of the pyridinium compound or the like on the surface of the pattern alignment film is lowered, and the action disappears. As a result, the liquid crystalline compound is aligned by the regulating force of the pattern alignment film itself, and the liquid crystalline compound is in a horizontal alignment state.

  Another example of the treatment for applying energy is light irradiation with a wavelength of 190 to 1200 nm. In this embodiment, the first and second alignment control regions are formed by pattern exposure using a photomask to a film formed from a composition containing at least one compound that reacts by applying energy. It is preferable that the first and second alignment control regions have a strip shape substantially equal to the length of the short side of each of the first and second retardation regions, and are alternately and repeatedly patterned.

  In one embodiment of the pattern alignment film, the compound that reacts upon application of energy is a photoacid generator, and contains at least a photoacid generator together with a polymer such as polyvinyl alcohol or modified polyvinyl alcohol, and the surface thereof is unidirectionally rubbed. In this embodiment, two regions of the first and second alignment control regions are formed which are different in the alignment treatment by the treatment and the alignment control ability by applying energy to a part of the regions. One region is a region having a higher content of the photoacid generator than the other region, and the first and second alignment control regions are pattern alignment films arranged alternately in the plane. A photo-acid generator decomposes | disassembles by provision of energy, and for this reason, a content rate differs in the 1st and 2nd orientation control area | region. The degree of decomposition of the photoacid generator can be determined by quantifying the content of the acidic compound produced by the decomposition of the photoacid generator in each orientation control region.

  The pattern alignment film generally contains a polymer as a main component. As the pattern alignment film, known alignment film polymer materials can be widely adopted. Known alignment film polymer materials are described in many documents, and many commercially available products can be obtained. The polymer material used in the present invention is preferably polyvinyl alcohol or polyimide, and derivatives thereof. In particular, modified or unmodified polyvinyl alcohol is preferred. Polyvinyl alcohols having various saponification degrees exist. In the present invention, those having a saponification degree of about 85 to 99 are preferably used. Commercial products may be used. For example, “PVA103”, “PVA203” (manufactured by Kuraray Co., Ltd.) and the like are PVA having the above saponification degree. Regarding the rubbing alignment film, reference can be made to the modified polyvinyl alcohol described in WO01 / 88574A1, page 43, line 24 to page 49, line 8, and paragraph Nos. [0071] to [0095] of Japanese Patent No. 3907735.

[Photoacid generator]
The photoacid generator is a compound that decomposes upon irradiation with light such as ultraviolet rays to generate an acidic compound. When the photoacid generator is decomposed by light irradiation to generate an acidic compound, the compound (photoacid generator) that reacts by application of energy changes to an orientation control ability of a film formed from a composition containing at least one kind. Occurs. Even if the change in the orientation control ability here is specified as a change in the orientation control ability of the pattern orientation film alone, the change in the orientation control ability of the pattern orientation film alone is included in the composition for forming an optical anisotropic layer disposed on the pattern orientation film. It may be specified as a change in orientation control ability achieved by an additive or the like contained in or may be specified as a combination thereof.
A rod-like liquid crystal compound described later may be in a vertically aligned state by adding an onium salt. When the acid generated by the decomposition and the onium salt are anion-exchanged, the uneven distribution at the interface of the pattern alignment film of the onium salt may be reduced, the vertical alignment effect may be reduced, and a horizontal alignment state may be formed. Further, for example, when the pattern alignment film is a polyvinyl alcohol alignment film, the ester portion may be decomposed by the generated acid, and as a result, the alignment film interface uneven distribution property of the onium salt may be changed.

A water-soluble compound is preferably used as the photoacid generator used for forming the pattern alignment film. Examples of photoacid generators that can be used include Prog. Polym. Sci. 23, p. 1485 (1998) and chemically amplified photoresists and compounds used in photocationic polymerization (Organic Materials Research Group, “Organic Materials for Imaging”, Bunshin Publishing (1993) ), See pages 187-192).
Specific examples include pyridinium salts, iodonium salts, sulfonium salts, diazonium, ammonium, iodonium, sulfonium, phosphonium salts, sulfonates that generate sulfonic acid, halides that generate hydrogen halide, and iron allene complexes. it can.
Among these, pyridinium salts, iodonium salts, and sulfonium salts are particularly preferably used as the photoacid generator. Preferable examples of the pyridinium salt, iodonium salt, and sulfonium salt include salts represented by the following general formulas.

In the formula, each R is a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms. Or a halogen atom. Y is a straight-chain alkyl group or branched alkyl group having 1 to 6 carbon atoms, a straight-chain alkoxy group or branched alkoxy group having 1 to 6 carbon atoms. X- represents a counter anion of a pyridinium salt, an iodonium salt or a sulfonium salt, and becomes an anion of an acidic compound generated by decomposition. PF ₆ ⁻ , BF ₄ ⁻ , or C _n F _{2n + 1} SO ₃ ⁻ (where n is an integer of 1 to 5) is preferable. For example, X- is BF ₄ ^- from a is a photoacid generator, the acid HBF ₄ is generated by the decomposition, X- is PF ₆ ^- from a is a photoacid generator, HPF ₆ occurs, X- is _{C n F 2n + 1 SO 3} - from a is a photoacid _{generator, C n F 2n + 1 SO} 3 H is generated.

  Although the specific example of the photo-acid generator which can be utilized for this invention below is shown, it is not limited to these. In the following specific examples, a salt in which an anion is specified is illustrated, but a specific example in which the anion is replaced with another anion is also illustrated as a specific example of a usable photoacid generator.

  Among the above specific examples, I-16, 17, and 34 to 37 are preferable, and I-35 is more preferable. These photoacid generators can be used alone or in combination according to the desired performance.

  The content of the photoacid generator in the film formed of the composition containing at least one photoacid generator is 1% by mass or more and 20% by mass or less of the total solid content of the polymer compound contained in the composition. It is preferable that it is 2 mass% or more and 10 mass% or less.

  Another embodiment is an embodiment in which the compound that reacts by applying energy has a photoreactive site (photoreactive group) that reacts by applying energy. A film formed from a composition containing at least one compound (compound having a photoreactive group) that reacts by applying energy is subjected to a unidirectional rubbing process and an alignment process by applying energy to the first and second layers. An alignment control region is formed, and one region is a region in which a main chain and a side chain of a compound including a photoreactive site are aligned in the rubbing direction, and the other region is a main chain aligned in the rubbing direction. Is a pattern alignment film in which the side chains are aligned in the orthogonal direction, and the first and second alignment control regions are alternately arranged in the plane. That is, this is a region that contains more photoreactive sites in one region than in the other region.

  The “photoreactive group” means that the chemical structure of the functional group or the alignment state of the molecule having the functional group is changed by light irradiation, whereby the molecules of the liquid crystalline compound arranged on the surface of the pattern alignment film It means a functional group that can be oriented in the direction. Specifically, azobenzene derivatives, cinnamic acid derivatives, chalcone derivatives, stilbenes, styrylpyridine derivatives, α-hydrazono-β-ketoesters, coumarin derivatives, benzylidenephthalimidines, retinoic acid derivatives, spiropyrans, spirooxazines Anthracene derivatives, benzophenone derivatives, polyimides, and the like are known, and azobenzene derivatives and cinnamic acid derivatives (polyvinylcinnamate) are preferable, and cinnamic acid derivatives are particularly preferable.

[Polyvinyl cinnamate]
Polyvinyl cinnamate is a compound that causes a dimerization reaction by applying energy, and specifically, a compound that causes a photodimerization reaction by light irradiation. The polyvinyl cinnamate preferably contains a photoreactive group, is preferably a photoalignment material that is aligned in response to light irradiation, and is preferably a photoalignable polymer having a photoreactive group. In polyvinyl cinnamate, the main chain (polyvinyl vinyl chain) and side chain mesogen chain (cinnamate chain) are aligned together by rubbing, and accordingly, the rod-like liquid crystalline compound is also horizontally aligned in parallel to the rubbing. On the other hand, when the UV treatment is performed after the rubbing treatment, the side chain portion forms a 2 + 2 type cyclobutane ring. Align horizontally.

前記一般式（１）中のＲ¹で表される置換基は、下記に例示した置換基群Ａから選ばれる置換基を表す。Ｒ²は、下記に例示した置換基群Ｂから選ばれる置換基を表す。ｎは、０〜５の整数を表す。 As the polyvinyl cinnamate, a photo-alignment polymer represented by the following general formula (1) is particularly preferable.

The substituent represented by R ¹ in the general formula (1) represents a substituent selected from the substituent group A exemplified below. R ² represents a substituent selected from the substituent group B exemplified below. n represents an integer of 0 to 5.

(Substituent group A)
As the substituent group A, an alkyl group (preferably an alkyl group having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms, such as a methyl group, an ethyl group, Isopropyl group, tert-butyl group, n-octyl group, n-decyl group, n-hexadecyl group, cyclopropyl group, cyclopentyl group, cyclohexyl group, etc.), alkenyl group (preferably having 2 to 20 carbon atoms, more) Preferably it is a C2-C12 alkenyl group, Most preferably, it is a C2-C8 alkenyl group, for example, a vinyl group, an aryl group, 2-butenyl group, 3-pentenyl group etc. are mentioned, Alkynyl group (preferably An alkynyl group having 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms, particularly preferably 2 to 8 carbon atoms, such as a propargyl group, -Pentynyl group and the like) and aryl groups (preferably aryl groups having 6 to 30 carbon atoms, more preferably 6 to 20 carbon atoms, particularly preferably 6 to 12 carbon atoms, such as phenyl group, p- Methylphenyl group, naphthyl group and the like), substituted or unsubstituted amino group (preferably an amino group having 0 to 20 carbon atoms, more preferably 0 to 10 carbon atoms, particularly preferably 0 to 6 carbon atoms). An unsubstituted amino group, a methylamino group, a dimethylamino group, a diethylamino group, an anilino group, etc.),

An alkoxy group (preferably having 1 to 20 carbon atoms, such as a methoxy group, an ethoxy group or a butoxy group), an alkoxycarbonyl group (preferably having 2 to 20 carbon atoms, more preferably having 2 to 16 carbon atoms, Particularly preferably, it is 2 to 10, for example, methoxycarbonyl group, ethoxycarbonyl group and the like, acyloxy group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 10 carbon atoms). For example, an acetoxy group, a benzoyloxy group, etc.), an acylamino group (preferably an acylamino group having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, and particularly preferably 2 to 10 carbon atoms). Acetylamino group, benzoylamino group, etc.), alkoxycarbonylamino group ( Preferably an alkoxycarbonylamino group having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, such as a methoxycarbonylamino group), aryloxycarbonylamino A group (preferably an aryloxycarbonylamino group having 7 to 20 carbon atoms, more preferably 7 to 16 carbon atoms, particularly preferably 7 to 12 carbon atoms, such as a phenyloxycarbonylamino group), a sulfonyl An amino group (preferably a sulfonylamino group having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, and particularly preferably 1 to 12 carbon atoms, and examples thereof include a methanesulfonylamino group and a benzenesulfonylamino group. ), A sulfamoyl group (preferably having 0 to 20 carbon atoms, more preferably A sulfamoyl group having a prime number of 0 to 16, particularly preferably 0 to 12 carbon atoms, and examples thereof include a sulfamoyl group, a methylsulfamoyl group, a dimethylsulfamoyl group, and a phenylsulfamoyl group), a carbamoyl group ( Preferably it is C1-C20, More preferably, it is C1-C16, Most preferably, it is C1-C12 carbamoyl group, for example, unsubstituted carbamoyl group, methylcarbamoyl group, diethylcarbamoyl group, phenylcarbamoyl group Etc.)

An alkylthio group (preferably an alkylthio group having 1 to 20 carbon atoms, more preferably an alkylthio group having 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as a methylthio group and an ethylthio group), an arylthio group ( Preferably it is C6-C20, More preferably, it is C6-C16, Most preferably, it is C6-C12 arylthio group, for example, a phenylthio group etc. are mentioned, A sulfonyl group (preferably C1-C1). 20, more preferably a sulfonyl group having 1 to 16 carbon atoms, particularly preferably a sulfonyl group having 1 to 12 carbon atoms, such as a mesyl group and a tosyl group, and a sulfinyl group (preferably having a carbon number of 1 to 20, more A sulfinyl group having 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms is preferable. Zensulfinyl group and the like), ureido group (preferably a ureido group having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, for example, an unsubstituted ureido group , Methylureido group, phenylureido group, etc.), phosphoric acid amide group (preferably having 1 to 20 carbon atoms, more preferably having 1 to 16 carbon atoms, particularly preferably having 1 to 12 carbon atoms). Yes, for example, diethyl phosphoric acid amide group, phenyl phosphoric acid amide group, etc.), hydroxy group, mercapto group, halogen atom (for example, fluorine atom, chlorine atom, bromine atom, iodine atom), cyano group, sulfo group, Carboxyl group, nitro group, hydroxamic acid group, sulfino group, hydrazino group, imino group, heterocyclic group (preferably having a carbon number of 1 to 0, more preferably a heterocyclic group of 1 to 12, for example, a heterocyclic group having a heteroatom such as a nitrogen atom, an oxygen atom, a sulfur atom, such as an imidazolyl group, a pyridyl group, a quinolyl group, a furyl group , Piperidyl group, morpholino group, benzoxazolyl group, benzimidazolyl group, benzthiazolyl group and the like), silyl group (preferably having 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, particularly preferably A silyl group having 3 to 24 carbon atoms, and examples thereof include a trimethylsilyl group and a triphenylsilyl group).
These substituents may be further substituted with these substituents. Further, when two or more substituents are present, they may be the same or different. If possible, they may be bonded to each other to form a ring.

In the general formula (1), R ¹ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and further preferably a hydrogen atom or a methyl group.

In the general formula (1), each R ² independently represents a substituent selected from the substituent group B exemplified below.

(Substituent group B)
An alkyl group (preferably an alkyl group having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms, such as a methyl group, an ethyl group, an isopropyl group, a tert-butyl group, n-octyl group, n-decyl group, n-hexadecyl group, cyclopropyl group, cyclopentyl group, cyclohexyl group and the like, alkenyl group (preferably having 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms, Particularly preferred are alkenyl groups having 2 to 8 carbon atoms, such as vinyl group, aryl group, 2-butenyl group and 3-pentenyl group), alkynyl groups (preferably having 2 to 20 carbon atoms, more preferred). Is an alkynyl group having 2 to 12 carbon atoms, particularly preferably 2 to 8 carbon atoms, such as propargyl group and 3-pentynyl group. An aryl group (preferably an aryl group having 6 to 30 carbon atoms, more preferably 6 to 20 carbon atoms, particularly preferably 6 to 12 carbon atoms, such as a phenyl group, a p-methylphenyl group, and a naphthyl group. Aralkyl groups (preferably 7 to 30 carbon atoms, more preferably 7 to 20 carbon atoms, particularly preferably 7 to 12 carbon atoms, such as benzyl group, phenethyl group, 3- Phenylpropyl group and the like), a substituted or unsubstituted amino group (preferably an amino group having 0 to 20 carbon atoms, more preferably 0 to 10 carbon atoms, particularly preferably 0 to 6 carbon atoms, Unsubstituted amino group, methylamino group, dimethylamino group, diethylamino group, anilino group, etc.),

An alkoxy group (preferably an alkoxy group having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 10 carbon atoms, and examples thereof include a methoxy group, an ethoxy group, and a butoxy group). An alkoxycarbonyl group (preferably an alkoxycarbonyl group having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 10 carbon atoms such as a methoxycarbonyl group and an ethoxycarbonyl group), acyloxy A group (preferably an acyloxy group having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 10 carbon atoms such as an acetoxy group and a benzoyloxy group), an acylamino group (preferably 2-20 carbon atoms, more preferably 2-16 carbon atoms, particularly preferably 2-10 carbon atoms. A silamino group, for example, an acetylamino group, a benzoylamino group, and the like, an alkoxycarbonylamino group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, and particularly preferably 2 to 12 carbon atoms). An alkoxycarbonylamino group, for example, a methoxycarbonylamino group), an aryloxycarbonylamino group (preferably having 7 to 20 carbon atoms, more preferably 7 to 16 carbon atoms, and particularly preferably 7 to 12 carbon atoms). Aryloxycarbonylamino group, for example, phenyloxycarbonylamino group and the like, sulfonylamino group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 1 carbon atoms). 12 sulfonylamino groups such as methanesulfonyl And sulfamoyl groups (preferably having 0 to 20 carbon atoms, more preferably 0 to 16 carbon atoms, and particularly preferably 0 to 12 carbon atoms, such as sulfamoyl group). Group, methylsulfamoyl group, dimethylsulfamoyl group, phenylsulfamoyl group and the like), carbamoyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, and particularly preferably carbon number). 1 to 12 carbamoyl groups, for example, unsubstituted carbamoyl group, methylcarbamoyl group, diethylcarbamoyl group, phenylcarbamoyl group and the like),

An alkylthio group (preferably an alkylthio group having 1 to 20 carbon atoms, more preferably an alkylthio group having 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as a methylthio group and an ethylthio group), an arylthio group ( Preferably it is C6-C20, More preferably, it is C6-C16, Most preferably, it is C6-C12 arylthio group, for example, a phenylthio group etc. are mentioned, A sulfonyl group (preferably C1-C1). 20, more preferably a sulfonyl group having 1 to 16 carbon atoms, particularly preferably a sulfonyl group having 1 to 12 carbon atoms, such as a mesyl group and a tosyl group, and a sulfinyl group (preferably having a carbon number of 1 to 20, more A sulfinyl group having 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms is preferable. Zensulfinyl group and the like), ureido group (preferably a ureido group having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, for example, an unsubstituted ureido group , Methylureido group, phenylureido group, etc.), phosphoric acid amide group (preferably having 1 to 20 carbon atoms, more preferably having 1 to 16 carbon atoms, particularly preferably having 1 to 12 carbon atoms). Yes, for example, diethyl phosphoric acid amide group, phenyl phosphoric acid amide group, etc.), hydroxy group, mercapto group, halogen atom (for example, fluorine atom, chlorine atom, bromine atom, iodine atom), cyano group, sulfo group, Carboxyl group, nitro group, hydroxamic acid group, sulfino group, hydrazino group, imino group, heterocyclic group (preferably having a carbon number of 1 to 0, more preferably a heterocyclic group of 1 to 12, for example, a heterocyclic group having a heteroatom such as a nitrogen atom, an oxygen atom, a sulfur atom, such as an imidazolyl group, a pyridyl group, a quinolyl group, a furyl group , Piperidyl group, morpholino group, benzoxazolyl group, benzimidazolyl group, benzthiazolyl group and the like), silyl group (preferably having 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, particularly preferably A silyl group having 3 to 24 carbon atoms, and examples thereof include a trimethylsilyl group and a triphenylsilyl group). These substituents may be further substituted with these substituents. Moreover, when it has two or more substituents, they may be the same or different. If possible, they may be bonded to each other to form a ring.

R ² is independently hydrogen atom, alkyl group, aryl group, alkoxy group, halogen atom (eg, fluorine atom, chlorine atom, bromine atom, iodine atom), amide group, acyl group, —SO ₂ NR (R Is preferably an alkyl group having 1 to 3 carbon atoms, a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a chlorine atom, an amide Are particularly preferably a group, an acyl group, or —SO ₂ NR (wherein R is an alkyl group having 1 to 3 carbon atoms).

n represents the integer of 0-5, 0-2 are preferable and 0-1 are more preferable. When n represents an integer of 2 or more, the plurality of R ² may be the same or different.

  The polyvinyl cinnamate may contain one type of repeating unit represented by the general formula (1), or may contain two or more types. Moreover, the said polyvinyl cinnamate may have 1 type (s) or 2 or more types of repeating units other than said each repeating unit. The other repeating units are not particularly limited, and preferred examples thereof include repeating units derived from ordinary radical polymerizable monomers. Hereinafter, specific examples of monomers for deriving other repeating units will be given. The photo-alignment polymer may contain a repeating unit derived from one or more monomers selected from the following monomer group.

Monomer group (1) Alkenes Ethylene, propylene, 1-butene, isobutene, 1-hexene, 1-dodecene, 1-octadecene, 1-eicocene, hexafluoropropene, vinylidene fluoride, chlorotrifluoroethylene, 3, 3, 3-trifluoropropylene, tetrafluoroethylene, vinyl chloride, vinylidene chloride, etc .;
(2) Dienes 1,3-butadiene, isoprene, 1,3-pentadiene, 2-ethyl-1,3-butadiene, 2-n-propyl-1,3-butadiene, 2,3-dimethyl-1,3 -Butadiene, 2-methyl-1,3-pentadiene, 1-phenyl-1,3-butadiene, 1-α-naphthyl-1,3-butadiene, 1-β-naphthyl-1,3-butadiene, 2-chloro -1,3-butadiene, 1-bromo-1,3-butadiene, 1-chlorobutadiene, 2-fluoro-1,3-butadiene, 2,3-dichloro-1,3-butadiene, 1,1,2- Trichloro-1,3-butadiene and 2-cyano-1,3-butadiene, 1,4-divinylcyclohexane and the like;

(3) Derivatives of α, β-unsaturated carboxylic acid (3a) Alkyl acrylates Methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, tert-butyl acrylate , Amyl acrylate, n-hexyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, tert-octyl acrylate, dodecyl acrylate, phenyl acrylate, benzyl acrylate, 2-chloroethyl acrylate, 2-bromoethyl acrylate, 4-chlorobutyl acrylate, 2-cyanoethyl acrylate, 2-acetoxyethyl acrylate, methoxybenzyl Chryrate, 2-chlorocyclohexyl acrylate, furfuryl acrylate, tetrahydrofurfuryl acrylate, 2-methoxyethyl acrylate, ω-methoxypolyethylene glycol acrylate (number of added polyoxyethylene: n = 2 to 100), 3-methoxy Butyl acrylate, 2-ethoxyethyl acrylate, 2-butoxyethyl acrylate, 2- (2-butoxyethoxy) ethyl acrylate, 1-bromo-2-methoxyethyl acrylate, 1,1-dichloro-2-ethoxyethyl acrylate, glycidyl acrylate Such);

(3b) Alkyl methacrylates Methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec-butyl methacrylate, tert-butyl methacrylate, amyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, 2 -Ethylhexyl methacrylate, n-octyl methacrylate, stearyl methacrylate, benzyl methacrylate, phenyl methacrylate, allyl methacrylate, furfuryl methacrylate, tetrahydrofurfuryl methacrylate, cresyl methacrylate, naphthyl methacrylate, 2-methoxyethyl methacrylate, 3-methoxybutyl methacrylate, ω Methoxypolyethylene glycol methacrylate (number of added polyoxyethylene: n = 2 to 100), 2-acetoxyethyl methacrylate, 2-ethoxyethyl methacrylate, 2-butoxyethyl methacrylate, 2- (2-butoxyethoxy) ethyl methacrylate Glycidyl methacrylate, 3-trimethoxysilylpropyl methacrylate, allyl methacrylate, 2-isocyanatoethyl methacrylate, etc .;

(3c) Diesters of unsaturated polycarboxylic acids Dimethyl maleate, dibutyl maleate, dimethyl itaconate, dibutyl taconate, dibutyl crotonate, dihexyl crotonate, diethyl fumarate, dimethyl fumarate, etc .;

(3d) Amides of α, β-unsaturated carboxylic acids N, N-dimethylacrylamide, N, N-diethylacrylamide, Nn-propylacrylamide, N-tertbutylacrylamide, N-tertoctylmethacrylamide, N- Cyclohexylacrylamide, N-phenylacrylamide, N- (2-acetoacetoxyethyl) acrylamide, N-benzylacrylamide, N-acryloylmorpholine, diacetone acrylamide, N-methylmaleimide and the like;

(4) Unsaturated nitriles Acrylonitrile, methacrylonitrile, etc .;
(5) Styrene and its derivatives Styrene, vinyl toluene, ethyl styrene, p-tert butyl styrene, methyl p-vinyl benzoate, α-methyl styrene, p-chloromethyl styrene, vinyl naphthalene, p-methoxy styrene, p-hydroxy Methyl styrene, p-acetoxy styrene, etc .;
(6) Vinyl esters Vinyl acetate, vinyl propionate, vinyl butyrate, vinyl isobutyrate, vinyl benzoate, vinyl salicylate, vinyl chloroacetate, vinyl methoxyacetate, vinyl vinyl acetate, etc .;

(7) Vinyl ethers Methyl vinyl ether, ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, isobutyl vinyl ether, tert-butyl vinyl ether, n-pentyl vinyl ether, n-hexyl vinyl ether, n-octyl vinyl ether, n-dodecyl Vinyl ether, n-eicosyl vinyl ether, 2-ethylhexyl vinyl ether, cyclohexyl vinyl ether, fluorobutyl vinyl ether, fluorobutoxyethyl vinyl ether, etc .; and (8) other polymerizable monomers N-vinyl pyrrolidone, methyl vinyl ketone, phenyl vinyl ketone, Methoxyethyl vinyl ketone, 2-vinyl oxazoline, 2-isopropenyl oxazoline .

  In the polyvinyl cinnamate, the amount of the repeating unit represented by the general formula (1) is preferably 50% by mass or more, more preferably 60% by mass or more, based on the total amount of constituent monomers of the polymer. It is particularly preferable that the content is at least mass%.

  The polyvinyl cinnamate, preferably a polymer having a repeating unit represented by the general formula (1), preferably has a mass average molecular weight of 1,000 or more and 1,000,000 or less, and is 1,000 or more and 500,000 or less. Is more preferably 1000 or more and 100,000 or less. The mass average molecular weight can be measured as a value in terms of polystyrene (PS) using gel permeation chromatography (GPC).

  The method for producing the polymer having the repeating unit represented by the general formula (1) is not particularly limited. For example, the method described in paragraphs [0047] to [0051] of JP-A-2007-025203. Can be used.

  Specific examples of the polymer having the repeating unit represented by the general formula (1) are shown below, but the present invention is not limited to these specific examples. Here, the numerical value in the formula is a mass percentage indicating the composition ratio of each monomer, and Mw is a mass average molecular weight in terms of PS measured by GPC. The numerical values of a and b represent mass ratios. In the formula, Me represents a methyl group, Et represents an ethyl group, and Ac represents an acetyl group.

  The thickness of the pattern alignment film is preferably 0.01 to 10 μm, and more preferably 0.01 to 1 μm.

(Method for producing pattern alignment film)
The present invention also relates to a method for producing a pattern alignment film. An example of the method for producing the pattern alignment film of the present invention is as follows.
1) Applying a composition containing at least one compound that reacts upon application of energy on a transparent support to form a film 2) Rubbing the film in one direction 3) Part of the film A step of applying energy to the region is included.
Steps 2) and 3) may be reversed.

  A composition containing at least one compound that reacts by application of energy is dissolved in an organic solvent and applied onto a transparent support. When the compound that reacts upon application of energy is a photoacid generator, the composition containing at least one compound that reacts upon application of energy is a composition mainly composed of a polymer material for pattern alignment film, and the application of energy. When the compound that reacts with is polyvinyl cinnamate, the composition is mainly composed of polyvinyl cinnamate.

The organic solvent for dissolving the composition containing at least one compound that reacts by the application of energy is not particularly limited, and examples thereof include methyl ethyl ketone, acetone, methanol, ethanol, isopropanol, and cyclohexanone.
Application methods include curtain coating, dip coating, spin coating, print coating, spray coating, slot coating, roll coating, slide coating, blade coating, gravure coating, wire bar method, etc. A well-known coating method is mentioned.

  In general, the alignment film exhibits an alignment control ability by a rubbing treatment. Usually, when a liquid crystalline compound is aligned on a film that has been rubbed in one direction, the liquid crystalline compound is aligned with its slow axis parallel or orthogonal to the rubbing direction. Which alignment state is determined is determined by one or more kinds of alignment film constituent materials, liquid crystal compounds, and alignment control agents.

  In the present invention, a compound that reacts by applying energy is further applied to a film formed of a composition containing at least one kind, and the film is subjected to energy treatment in a pattern. Energy may be applied once. An example of a method for energy-treating the film in a pattern is an aspect in which the first and second alignment control regions are formed by pattern exposure using a photomask. It is preferable that the first and second alignment control regions have a strip shape substantially equal to the length of the short side of each of the first and second retardation regions, and are alternately and repeatedly patterned.

When the compound that reacts by applying energy is a photoacid generator, the photoacid generator is decomposed by applying energy, and the photoacid generator is decomposed and the acidic compound is decomposed in the light-irradiated part and the light-unirradiated part. The generated region and the non-generated region are formed, thereby giving a difference in the alignment control ability of the pattern alignment film.
Specifically, the photoacid generator remains almost undecomposed in the non-irradiated part, and the interaction between the pattern alignment film constituent material, the liquid crystal compound, and the alignment controller added as required dominates the alignment state. Then, the rod-like liquid crystal compound is vertically aligned. When a film formed from a composition containing at least one photoacid generator is irradiated with light and an acidic compound is generated, the interaction is no longer dominant, and the orientation control ability by rubbing dominates the orientation state, The rod-like liquid crystalline compound is horizontally aligned. A water-soluble compound is preferably used as the photoacid generator used for forming the pattern alignment film.

When the compound that reacts by the application of energy is polyvinyl cinnamate, the alignment state of the polyvinyl cinnamate changes due to the application of energy, and there is a difference in the alignment control ability between the light irradiated part and the light non-irradiated part. Give it.
Specifically, in the unirradiated part, the side chain of polyvinyl cinnamate does not change its orientation state, and is aligned in the rubbing direction together with the main chain of polyvinyl cinnamate, so that the rod-like liquid crystalline compound is also horizontally aligned in the direction parallel to the rubbing direction. Orient. In the light irradiation part, the alignment state of the polyvinyl cinnamate changes, and the rod-like liquid crystalline compound is horizontally aligned in the direction orthogonal to the rubbing direction because it is aligned in the direction orthogonal to the main chain.

For applying energy under a photomask, it is preferable to use ultraviolet rays, and it is more preferable to use non-polarized ultraviolet rays. Preferably has a peak at 200~250nm the irradiation wavelength, it is preferable to use a UV-C light source, the exposure amount is preferably 5~1000mJ / cm ² approximately, 5 to 100 mJ / cm ² about More preferably, it is about 5-50 mJ / cm < ² >. If the exposure amount is too small, a pattern cannot be formed. On the other hand, when the exposure amount is too large, the pattern resolution decreases due to the diffusion of the acidic compound. In order to improve the pattern resolution, exposure at room temperature is preferable.
In addition, the conditions of light irradiation can be suitably set according to the composition of the material which comprises a pattern orientation film, etc., and are not limited to the said conditions.

The order of 2) process and 3) process is not particularly limited, and 3) process may be performed after 2) process, or 2) process may be performed after 3) process.
2) When the step 3) is performed after the step, that is, when energy is applied after the rubbing treatment, molecules on the film surface formed from the composition containing at least one compound that reacts by applying the energy are aligned along the rubbing direction. In addition, by applying energy to the aligned molecules, a photoreaction such as a photoisomerization reaction occurs, and the alignment control ability for the liquid crystalline compound can be distinguished between the light irradiated portion and the non-irradiated portion.
3) After the step, when the step 2) is performed, that is, when the rubbing treatment is performed after applying energy, the photoirradiation part occurs in the photoirradiation part, and the non-irradiation part starts from the composition containing at least one compound that reacts by the application of energy. The formed film surface molecules are randomly oriented. When rubbing is performed in this state, the molecules are aligned in the rubbing direction, but the alignment structure between the irradiated and unirradiated parts is different because the structure of the aligned molecules is different between the irradiated and unirradiated parts. The ability to distinguish.

(Optically anisotropic layer)
The optically anisotropic layer 12 is a patterned optically anisotropic layer in which the first and second retardation regions 12a and 12b are arranged uniformly and symmetrically in the image display device. An example is an optically anisotropic layer in which the in-plane retardation of the first and second retardation regions 12a and 12b is about λ / 4, and the in-plane slow axes a and b are orthogonal to each other.

  In the optically anisotropic layer, Re may be about λ / 4 alone. In this case, Re (550) is preferably 110 to 165 nm, more preferably 120 to 150 nm, and 125 to Particularly preferred is 145 nm.

  Similarly, an optically anisotropic layer in which one in-plane retardation of the first and second retardation regions 12a and 12b is λ / 4 and the other in-plane retardation is 3λ / 4 is used. Circularly polarized images can be separated. Further, by using an optically anisotropic layer in which the in-plane retardation of one of the first and second retardation regions 12a and 12b is λ / 4 and the other in-plane retardation is 3λ / 4. The right-eye and left-eye linearly polarized images may be separated.

Further, an optically anisotropic layer in which the in-plane retardation of one of the first and second retardation regions 12a and 12b is λ / 2 and the other in-plane retardation is 0 is used. A circularly polarized image can be similarly separated by laminating a support having an inner retardation of λ / 4 and respective slow axes parallel or orthogonal to each other.
Further, the shape and arrangement pattern of the first and second phase difference regions 12a and 12b are not limited to the mode in which the stripe patterns shown in FIGS. 2 and 3 are alternately arranged. As shown in FIG. 4, rectangular patterns may be arranged in a grid pattern.

In the embodiment in which the in-plane retardation of the first and second retardation regions 12a and 12b is about λ / 4, the in-plane slow axes a and b have an angle of ± 45 ° with the absorption axis of the polarizing film, respectively. It is preferable to make it. In the present specification, it is not strictly required to be ± 45 °, and any one of the first and second retardation regions 12a and 12b is preferably 40 to 50 °, and the other is -50 to -40 °.
The Re of the optically anisotropic layer 12 does not have to be λ / 4 alone, and the sum of Re of all the members including the optically anisotropic layer 12 disposed on one surface of the polarizing film 18; For example, in the embodiment of FIG. 6 (a), the total amount of Re of the polarizing film protective film, the support, the optically anisotropic layer, and the base film is shown. In the embodiment of FIG. In the embodiment of FIG. 6C, the total Re of the isotropic layer and the support is the sum of Re of all of the support, the optically anisotropic layer, and the base film. In the embodiment of FIG. The total Re of the film protective film, the support, and the optically anisotropic layer is preferably 110 to 160 nm, more preferably 120 to 150 nm, and particularly preferably 125 to 145 nm.

  The optically anisotropic layer 12 is formed from a composition mainly composed of a rod-like liquid crystal compound having a polymerizable group, and the rod-like liquid crystal compound is preferably aligned in at least one of horizontal alignment and vertical alignment. In the present specification, “horizontal alignment” means that the major axis direction and the layer surface of the rod-like liquid crystalline compound are horizontal. It is not required to be strictly horizontal, and in this specification, it means an orientation having an inclination angle of 20 degrees or less with a horizontal plane. The inclination angle is preferably 0 to 5 degrees, more preferably 0 to 3 degrees, further preferably 0 to 2 degrees, and particularly preferably 0 to 1 degree. In the present specification, “vertical alignment” means that the major axis direction of the rod-like liquid crystal compound is perpendicular to the layer surface. It is not required to be strictly perpendicular, and in this specification, it means an orientation having an inclination angle of 70 degrees or more with a horizontal plane. The inclination angle is preferably 85 to 90 degrees, more preferably 87 to 90 degrees, further preferably 88 to 90 degrees, and particularly preferably 89 to 90 degrees.

In the present invention, the rod-like liquid crystalline compound is preferably polymerized in a horizontally aligned state, and the alignment state is preferably fixed.
As the rod-like liquid crystalline compound, for example, those described in JP-T-11-513019 and JP-A-2007-279688 can be preferably used, but are not limited thereto.

  The rod-like liquid crystalline compound may have two or more types of reactive groups with different polymerization conditions. In this case, it is possible to produce an optically anisotropic layer including a polymer having an unreacted reactive group by selecting conditions and polymerizing only a part of plural types of reactive groups. . The polymerization conditions used may be the wavelength range of ionizing radiation used for polymerization immobilization, or the difference in polymerization mechanism used, but preferably a radical reaction group and a cationic reaction that can be controlled by the type of initiator used. A combination of groups is good. A combination in which the radical reactive group is an acrylic group and / or a methacryl group and the cationic group is a vinyl ether group, an oxetane group and / or an epoxy group is particularly preferable because the reactivity can be easily controlled.

  In general, the longer the wavelength, the smaller the retardation of the rod-like liquid crystalline compound. Therefore, when using the one having a retardation at the wavelength G (550 nm) of 137.5 nm of λ / 4, the wavelength R (600 nm) On the contrary, it is larger than that for the wavelength B (450 nm). In order to solve this problem, Δnd (450 nm) <Δnd (550 nm) <Δnd (650 nm) is satisfied, that is, in the visible light region, the phase difference is inverse dispersion characteristic (wavelength is It is also preferable to use a rod-like liquid crystalline compound having a property that the longer the phase is, the larger the phase difference is. Examples of such rod-like liquid crystal compounds include compounds of general formula (I) and general formula (II) described in JP-A-2007-279688.

  In the composition, an additive for accelerating the vertical alignment of the rod-like liquid crystal compound may be added. Examples of the additive include [0055] to [0055] in JP-A No. 2009-22001. 0063] are included.

Moreover, in this invention, in order to implement | achieve the vertical alignment of the rod-shaped liquid crystalline compound which has a polymeric group, it is preferable to add onium salt. The onium salt is unevenly distributed at the alignment film interface and acts to increase the tilt angle of the liquid crystal molecules in the vicinity of the alignment film interface. Examples of onium salts that can be used in the present invention include the onium salts described in paragraphs [0212] to [0239] of JP2012-042530A and paragraphs [0098] to [0125] of JP2012008170A. Can be used.
A fluoroaliphatic group-containing copolymer may be added for the purpose of controlling the orientation of the rod-like liquid crystalline compound at the air interface. Examples of the fluoroaliphatic group-containing copolymer that can be used in the present invention include paragraphs [0240] to [0242] of JP2012-042530A and paragraphs [0126] to [0127] of JP2012008170A. The fluoroaliphatic group-containing copolymer described in 1) can be used.
In addition, other additives such as a polymerization initiator and a sensitizer may be added. As other additives, for example, the additives described in paragraphs [0243] to [0244] of JP2012-042530A and paragraphs [0128] to [0131] of JP2012008170A are used. be able to.

  The alignment state of the rod-like liquid crystalline compound can be confirmed by measuring the tilt angle of the liquid crystal molecules in KOBRA-21ADH (manufactured by Oji Scientific Instruments) or AxoScan Tip-Tilt mode manufactured by AXOMETRIX. Here, horizontal means that the major axis direction of the rod-like liquid crystal compound is 0 ° to 20 ° in a direction parallel to the film surface, and vertical means 70 ° to 90 °.

  The thickness of the optically anisotropic layer formed in this manner is not particularly limited, but is preferably 0.1 to 10 μm, and more preferably 0.5 to 5 μm.

(Transparent support)
The optical film of the present invention has a transparent support that supports the optically anisotropic layer.
For the transparent support, various known materials can be used without particular limitation. Re (550) of the transparent support is not particularly limited, but when the functional layer does not have a support or when the functional layer is not disposed, 0 to 10 nm is preferable, and 0 to 7 nm is more preferable. 0 to 5 nm is particularly preferable.
When the functional layer has a support, Re (550) of the transparent support 16 is preferably 0 to 10 nm, more preferably 0 to 7 nm, and particularly preferably 0 to 5 nm.

  Examples of the material for forming a transparent support usable in the present invention include polycarbonate polymers, polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, acrylic polymers such as polymethyl methacrylate, polystyrene, acrylonitrile / styrene copolymer, and the like. Examples thereof include styrenic polymers such as coalescence (AS resin). Polyolefins such as polyethylene and polypropylene, polyolefin polymers such as ethylene / propylene copolymers, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, sulfone polymers, polyethersulfone polymers , Polyether ether ketone polymers, polyphenylene sulfide polymers, vinylidene chloride polymers, vinyl alcohol polymers, vinyl butyral polymers, arylate polymers, polyoxymethylene polymers, epoxy polymers, or polymers mixed with the above polymers Take an example. The polymer film of the present invention can also be formed as a cured layer of an ultraviolet-curable or thermosetting resin such as acrylic, urethane, acrylic urethane, epoxy, or silicone.

  As a material for forming the transparent support, a thermoplastic norbornene resin can be preferably used. Examples of the thermoplastic norbornene-based resin include ZEONEX, ZEONOR manufactured by Nippon Zeon Co., Ltd., and ARTON manufactured by JSR Corporation.

  In addition, as a material for forming the transparent support, a cellulose polymer represented by triacetyl cellulose (hereinafter referred to as cellulose acylate), which has been conventionally used as a transparent protective film of a polarizing plate, is preferably used. I can do it.

[Ultraviolet absorber]
To the transparent support such as the cellulose acylate film, an ultraviolet absorber is further added in order to improve the light resistance of the film itself or to prevent deterioration of image display members such as a polarizing plate and a liquid crystal compound of a liquid crystal display device. It is preferable.

  As the ultraviolet absorber, one having an excellent ability to absorb ultraviolet rays having a wavelength of 370 nm or less from the viewpoint of preventing deterioration of the liquid crystal and having as little absorption of visible light having a wavelength of 400 nm or more as possible from the viewpoint of good image display properties is used. It is preferable. In particular, the transmittance at a wavelength of 370 nm is desirably 20% or less, preferably 10% or less, and more preferably 5% or less. Examples of such ultraviolet absorbers include oxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, benzophenone compounds, cyanoacrylate compounds, nickel complex salts compounds, hydroxyphenyl triazine compounds, and the like Examples include, but are not limited to, polymeric ultraviolet absorbing compounds containing an ultraviolet absorbing group. Two or more kinds of ultraviolet absorbers may be used.

  As a method of adding the ultraviolet absorber to the dope, it may be added after being dissolved in an organic solvent such as alcohol, methylene chloride, dioxolane, or may be added directly into the dope composition. For an inorganic powder that does not dissolve in an organic solvent, a dissolver or a sand mill is used in the organic solvent and cellulose acylate to disperse and then added to the dope.

  In this invention, the usage-amount of a ultraviolet absorber is 0.1-5.0 mass parts with respect to 100 mass parts of cellulose acylates, Preferably it is 0.5-2.0 mass parts, More preferably, it is 0.8-2. 0 parts by mass.

(Polarizing film)
The optical film may further include a polarizing film 18 as shown in an example in FIGS. Moreover, you may have further the polarizing film protective film 19 which protects the polarizing film 18. FIG. In FIG. 5 and FIG. 6, the alignment film is omitted.

  The optical film of the present invention is disposed on the viewing side outer side of the display panel together with the polarizing film (if the display panel has a polarizing film on the viewing side, further outside the viewing side polarizing film of the display panel). A polarized image that has passed through each of the first and second phase difference regions is recognized as an image for the right eye or the left eye through polarized glasses or the like. Therefore, it is preferable that the first and second phase difference regions have the same shape so that the left and right images do not become non-uniform, and that the respective arrangements are preferably uniform and symmetrical.

  When the optical film has a polarizing film, as shown in FIGS. 2 and 3, the optically anisotropic layer 12 is polarized along the in-plane slow axes a and b of the first and second retardation regions 12a and 12b, respectively. It arrange | positions with the absorption axis P of a film | membrane +45 degrees. With this configuration, it is possible to separate right-eye and left-eye circularly polarized images. Further, the viewing angle may be further increased by further laminating λ / 2 plates. Further, at least one surface of the polarizing film may further have a protective film.

  As the polarizing film, a general polarizing film can be used. For example, a polarizer film made of a polyvinyl alcohol film dyed with iodine or a dichroic dye can be used.

  A protective film 19 for the polarizing film may be disposed between the transparent support 14 and the polarizing film 18. In addition, as described above, when the display panel has a polarizing film on the surface on the viewing side, the optical film of the present invention does not have a polarizing film, and is combined with the polarizing film of the display panel to separate a circularly polarized image or the like. It may be an aspect showing a function. Moreover, the optical compensation film 4 or the protective film 19 may be disposed between the liquid crystal cell and the polarizing film.

(Functional layer)
The optical film may further have a functional layer 20 as shown in FIGS. 5A to 5D. Moreover, you may have further the transparent film 21 which supports the functional layer 20. FIG.
Examples of the functional layer are a hard coat layer, an antireflection layer, a low refractive index layer, a medium refractive index layer, a high refractive index layer, and an antiglare layer. Two or more functional layers may be arranged. Moreover, the functional layer may have a transparent film as a support body of a functional layer.

  The optical film of the present invention may be provided with a single functional layer or a plurality of functional layers depending on the purpose. Preferred embodiments include an embodiment in which a hard coat layer is laminated on an optically anisotropic layer, an embodiment in which an antireflection layer is laminated on an optically anisotropic layer, and a hardcoat layer on an optically anisotropic layer And an antireflection layer is further laminated thereon, and an antiglare layer is laminated on the optically anisotropic layer. The antireflection layer is a layer composed of at least one layer designed in consideration of the refractive index, the film thickness, the number of layers, the layer order, and the like so that the reflectance is reduced by optical interference.

  In the simplest configuration, the antireflection layer has a configuration in which only the low refractive index layer is coated on the outermost surface of the film. In order to further reduce the reflectivity, it is preferable to configure the antireflection layer by combining a high refractive index layer having a high refractive index and a low refractive index layer having a low refractive index. As a configuration example, two layers of a high refractive index layer / low refractive index layer or three layers having different refractive indexes are arranged in order from the bottom, and a medium refractive index layer (having a higher refractive index than the lower layer and a high refractive index). In some cases, a layer having a lower refractive index than a layer) / a layer having a higher refractive index / a layer having a lower refractive index are stacked in this order. Among them, from the viewpoint of durability, optical characteristics, cost, productivity, etc., it is preferable to have a medium refractive index layer / high refractive index layer / low refractive index layer in this order on the hard coat layer, for example, JP-A-8-122504. Examples include the configurations described in JP-A-8-110401, JP-A-10-300902, JP-A 2002-243906, JP-A 2000-11706, and the like. Other functions may be imparted to each layer, for example, an antifouling low refractive index layer, an antistatic high refractive index layer, or an antistatic hard coat layer (eg, Japanese Patent Laid-Open No. Hei 10). -206603 gazette, Unexamined-Japanese-Patent No. 2002-243906 etc.) etc. are mentioned.

Examples of specific layer configurations of the optical film of the present invention having a hard coat layer and an antireflection layer are shown below.
Support / Pattern Optical Anisotropic Layer Support / Pattern Optical Anisotropic Layer / Transparent Film / Hard Coat Layer Support / Pattern Optical Anisotropic Layer / Transparent Film / Low Refractive Index Layer Support / Pattern Optical Anisotropy Layer / Transparent film / Hard coat layer / Low refractive index layer Support / Pattern optical anisotropic layer / Transparent film / Hard coat layer / Medium refractive index layer / High refractive index layer / Low refractive index layer Support / Pattern optical difference Isotropic layer / transparent film / antiglare layer support / patterned optically anisotropic layer / transparent film / antiglare layer / low refractive index layer support / patterned optically anisotropic layer / transparent film / antiglare layer / medium refraction Index layer / High refractive index layer / Low refractive index layer Support / Pattern optical anisotropic layer / Transparent film / Hard coat layer / Anti-glare layer Support / Pattern optical anisotropic layer / Transparent film / Hard coat layer / Prevention Dazzle layer / Low refractive index layer Support / Putter Optically anisotropic layer / transparent film / hard coat layer / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index layer pattern optical anisotropic layer / support pattern optical anisotropic layer / support / Transparent film / Hard coat layer Pattern optical anisotropic layer / Support / Transparent film / Low refractive index layer Pattern optical anisotropic layer / Support / Transparent film / Hard coat layer / Low refractive index layer Pattern optical anisotropy Layer / support / transparent film / hard coat layer / medium refractive index layer / high refractive index layer / low refractive index layer pattern optical anisotropic layer / support / transparent film / antiglare layer pattern optical anisotropic layer / support Body / transparent film / antiglare layer / low refractive index layer patterned optical anisotropic layer / support / transparent film / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index layer patterned optical anisotropic layer / Support / Hard coat layer Pattern optical anisotropic layer / Support Body / transparent film / hard coat layer / antiglare layer pattern optical anisotropic layer / support / transparent film / hard coat layer / antiglare layer / low refractive index layer pattern optical anisotropic layer / support / transparent film / Hard coat layer / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index layer pattern optical anisotropic layer / support / hard coat layer pattern optical anisotropic layer / support / low refractive index layer pattern Optical anisotropic layer / support / hard coat layer / low refractive index layer pattern optical anisotropic layer / support / hard coat layer / medium refractive index layer / high refractive index layer / low refractive index layer pattern optical anisotropy Layer / support / antiglare layer patterned optical anisotropic layer / support / antiglare layer / low refractive index layer patterned optical anisotropic layer / support / antiglare layer / medium refractive index layer / high refractive index layer / Low refractive index layer Pattern optical anisotropic layer / Support / Hard coat layer / Anti-glare layer Pattern light Anisotropic layer / support / hard coat layer / antiglare layer / low refractive index layer Pattern optical anisotropic layer / support / hard coat layer / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index Index layer Support / Pattern optical anisotropic layer / Hard coat layer Support / Pattern optical anisotropic layer / Low refractive index layer Support / Pattern optical anisotropic layer / Hard coat layer / Low refractive index layer Support / Pattern optical anisotropic layer / hard coat layer / medium refractive index layer / high refractive index layer / low refractive index layer support / pattern optical anisotropic layer / antiglare layer support / pattern optical anisotropic layer / antiglare Layer / low refractive index layer support / patterned optically anisotropic layer / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index layer support / patterned optically anisotropic layer / hard coat layer / antiglare Layer Support / Pattern optical anisotropy layer / Hard coat layer / Anti-glare layer / Low refractive index layer Support / Pattern optical anisotropy / Hardcoat layer / antiglare layer / medium refractive index layer / high refractive index layer / low refractive index layer

  In each configuration described above, it is preferable to directly form a functional layer such as a hard coat layer, an antiglare layer, or an antireflection layer on the patterned optically anisotropic layer. In addition, an optical film including a patterned optically anisotropic layer and an optical film separately provided with a layer such as a hard coat layer, an antiglare layer and an antireflection layer on a transparent film (support for a functional layer) are laminated. May be manufactured. Details of the low refractive index layer, the middle refractive index layer, the high refractive index layer, the antiglare layer, and the like are described in paragraphs [0235] to [0256] of JP2012-018395A and paragraphs of JP20120188396A. Those described in [0225] to [0245] can be referred to and used.

  Preferred embodiments of the layer structure such as the antireflection layer of the optical film of the present invention include paragraphs [0205] to [0218] of JP2012-018396A, and paragraphs [0214] to [0228] of JP2012-018395A. ] And the like can be referred to.

(Hard coat layer)
The optical film of the present invention can be provided with a hard coat layer in order to impart the physical strength of the film. In the present invention, it is not necessary to provide a hard coat layer, but it is preferable to provide a hard coat layer because the scratch resistance surface such as a pencil scratch test becomes strong.
Preferably, a low refractive index layer is provided on the hard coat layer, and more preferably an intermediate refractive index layer and a high refractive index layer are provided between the hard coat layer and the low refractive index layer to constitute an antireflection film. The hard coat layer may be composed of two or more layers.

  The refractive index of the hard coat layer is preferably in the range of 1.48 to 2.00, more preferably 1.48 to 1.70, from the optical design for obtaining an antireflection film. is there. In the present invention, since there is at least one low refractive index layer on the hard coat layer, if the refractive index is too small, the antireflection property is lowered, and if it is too large, the color of the reflected light tends to be strong. is there.

The film thickness of the hard coat layer is usually about 0.5 μm to 50 μm, preferably 1 μm to 20 μm, more preferably 5 μm to 20 μm, from the viewpoint of imparting sufficient durability and impact resistance to the film.
The strength of the hard coat layer is preferably H or higher, more preferably 2H or higher, and most preferably 3H or higher in the pencil hardness test. Furthermore, in the Taber test according to JIS K5400, the smaller the wear amount of the test piece before and after the test, the better.

  The hard coat layer is preferably formed by a crosslinking reaction or a polymerization reaction of an ionizing radiation curable compound. For example, it may be formed by applying a coating composition containing an ionizing radiation-curable polyfunctional monomer or polyfunctional oligomer on a transparent support and subjecting the polyfunctional monomer or polyfunctional oligomer to a crosslinking reaction or a polymerization reaction. it can. The functional group of the ionizing radiation-curable polyfunctional monomer or polyfunctional oligomer is preferably a light, electron beam, or radiation polymerizable group, and among them, a photopolymerizable functional group is preferable. Examples of the photopolymerizable functional group include unsaturated polymerizable functional groups such as a (meth) acryloyl group, a vinyl group, a styryl group, and an allyl group. Among them, a (meth) acryloyl group is preferable. Specifically, the compounds mentioned above (polyfunctional monomers having a polymerizable unsaturated group) can be preferably used.

  The hard coat layer contains matte particles having an average particle diameter of 1.0 to 10.0 μm, preferably 1.5 to 7.0 μm, such as inorganic compound particles or resin particles, for the purpose of imparting internal scattering properties. May be.

  Various refractive index monomers, inorganic particles, or both can be added to the binder of the hard coat layer for the purpose of controlling the refractive index of the hard coat layer. In addition to the effect of controlling the refractive index, the inorganic particles also have the effect of suppressing cure shrinkage due to the crosslinking reaction. In the present invention, a polymer formed by polymerizing the polyfunctional monomer and / or the high refractive index monomer after the formation of the hard coat layer, and the inorganic particles dispersed therein are referred to as a binder.

  The hard coat layer may contain an ultraviolet absorber in addition to the inorganic compound particles. As an ultraviolet absorber, it is the same as that of the example of the ultraviolet absorber added to a transparent support body, and its preferable range is also the same.

  The content of the UV absorber depends on the required UV transmittance and the absorbance of the UV absorber, but the hard coat layer forming composition (however, the solid content excluding the solvent when prepared as a coating solution) is 100 parts by mass. The amount is usually 20 parts by mass or less, preferably 1 to 20 parts by mass. When there is more content of an ultraviolet absorber than 20 mass parts, while there exists a tendency for the sclerosis | hardenability by the ultraviolet-ray of a curable composition to fall, there exists a possibility that the visible light transmittance | permeability of a hard-coat layer may fall. On the other hand, when the amount is less than 1 part by mass, the hard coat layer cannot sufficiently exhibit the ultraviolet absorptivity.

[Inorganic fine particles]
As the inorganic fine particles, inorganic fine particles containing metal oxides are preferable, and inorganic fine particles containing at least one metal oxide selected from Ti, Zr, In, Zn, Sn, Al and Sb are more preferable. preferable. Further, at least one of the medium refractive index layer and the high refractive index layer may contain conductive inorganic fine particles.
The details of the inorganic fine particles can be referred to paragraphs [0239] to [0244] of JP2012-018395A.

[Curable compound]
As the curable compound, a polymerizable compound is preferable, and as the polymerizable compound, an ionizing radiation curable polyfunctional monomer or polyfunctional oligomer is preferably used. The functional group in these compounds is preferably a light, electron beam, or radiation polymerizable group, and among them, a photopolymerizable functional group is preferable. Examples of the photopolymerizable functional group include unsaturated polymerizable functional groups such as a (meth) acryloyl group, a vinyl group, a styryl group, and an allyl group. Among them, a (meth) acryloyl group is preferable. The details of the curable compound can be referred to paragraph [0245] of JP2012-018395A.

[Adhesive layer]
The pressure-sensitive adhesive or adhesive used for bonding the layers may be a pressure-sensitive adhesive or a UV adhesive, and may be bonded via a pressure-sensitive adhesive layer or an adhesive layer, and is not particularly limited. Examples of the pressure-sensitive adhesive or adhesive usable in the present invention include paragraphs [0100] to [0115] of JP2011-037140A, paragraphs [0155] to [0171] of JP2009-292870A, and the like. The adhesives described can be used.

  The transparent film (support) may also serve as a transparent support for the patterned optically anisotropic layer. About the example of the polymer film which can be utilized as a transparent film, it is the same as that of the example of the transparent support body of the said pattern optically anisotropic layer, and its preferable range is also the same.

Adhesive layer:
An adhesive layer may be disposed between the patterned optically anisotropic layer and the polarizing film. The adhesive layer used for laminating the patterned optically anisotropic layer and the polarizing film is, for example, the ratio of G ′ and G ″ measured with a dynamic viscoelasticity measuring apparatus (tan δ = G ″ / G ′). Represents a substance having a value of 0.001 to 1.5, and includes a so-called pressure-sensitive adhesive and a substance that is easy to creep. There is no restriction | limiting in particular about an adhesive, For example, a polyvinyl alcohol-type adhesive can be used.

2. Manufacturing method of optical film:
The present invention also relates to a method for producing an optical film. An example of the method for producing the optical film of the present invention is as follows:
1) Applying a composition containing at least one compound that reacts upon application of energy on a transparent support to create a film 2) Rubbing the film in one direction 3) Energizing a partial region of the film 4) Step 5) of applying a composition mainly composed of a rod-like liquid crystalline compound having a polymerizable group on the pattern alignment film obtained by rubbing and applying energy to the film. Step 6 of forming a first retardation region and a second retardation region in which at least one of in-plane slow axis direction and in-plane retardation is different from each other by heating 6) rod-like liquid crystal having a polymerizable group by applying energy Immobilizing the compound.
The steps 1) to 6) are preferably included in this order, and the order of steps 2) and 3) may be reversed.

  Steps 1) to 3) are the same as the method for producing the pattern alignment film.

After forming a pattern alignment film by rubbing treatment and application of energy, a composition mainly composed of a rod-like liquid crystalline compound having a polymerizable group is applied on the pattern alignment film, and heated at a temperature of T1 ° C. A phase difference region and a second phase difference region are formed.
Thereafter, energy is applied to fix the rod-like liquid crystal compound. 6) The alignment state in the process is fixed at a temperature T ₂ ° C., and the temperature satisfies the condition of T ₁ > T ₂ in relation to the alignment temperature T ₁ ° C. of the liquid crystalline compound in the process 5). If this condition is satisfied, it is possible to fix the alignment state while suppressing disturbance of the alignment state. The preferable temperature ranges of T ₁ ° C and T ₂ ° C vary depending on the material selected. Generally, T ₁ ° C is about 50 to about 150 ° C, and T ₂ ° C is about 20 to about 120 ° C. The difference between T ₁ and T ₂ is preferably about 10 to about 100 ° C.

3. 3D image display apparatus and 3D image display system TECHNICAL FIELD This invention relates also to the 3D image display apparatus and 3D image display system which have the optical film of this invention. The optical film of the present invention is disposed on the viewing side of the display panel and has a function of converting images displayed on the display panel into polarized images such as right-eye and left-eye circularly polarized images or linearly polarized images. An observer observes these images through a polarizing plate such as circularly polarized light or linearly polarized glasses, and recognizes them as a stereoscopic image.

  In the present invention, there is no limitation on the display panel. For example, it may be a liquid crystal panel including a liquid crystal layer, an organic EL display panel including an organic EL layer, or a plasma display panel. For any aspect, various possible configurations can be employed. Further, in a mode in which a liquid crystal panel or the like in a transmission mode has a polarizing film for image display on the viewing side surface, the optical film of the present invention may achieve the above function by combination with the polarizing film. Of course, the optical film of the present invention may have a polarizing film separately from the liquid crystal panel. In this case, the absorption axis of the polarizing film of the optical film coincides with the absorption axis of the polarizing film of the liquid crystal panel. Let them be arranged.

  6 (a) to 6 (d), a backlight is disposed behind the liquid crystal cell 1, a polarizing film 2 is provided between the backlight and the liquid crystal cell 1, and a polarizing film protective film as necessary. 3 and the optical compensation film 4 are arranged as a transmission mode.

  There is no restriction | limiting in particular about the structure of a liquid crystal cell, The liquid crystal cell of a general structure is employable. The liquid crystal cell includes, for example, a pair of substrates (not shown) opposed to each other and a liquid crystal layer sandwiched between the pair of substrates, and may include a color filter layer as necessary. The driving mode of the liquid crystal cell is not particularly limited, and is twisted nematic (TN), super twisted nematic (STN), vertical alignment (VA), in-plane switching (IPS), optically compensated bend cell (OCB). Various modes such as can be used.

  In the TN mode, the absorption axis of the polarizing film is generally arranged at 45 ° or 135 ° with respect to 0 ° in the horizontal direction of the display surface. Therefore, the TN mode liquid crystal panel is an optical film having the mode shown in FIG. It is preferable to combine with. In a TN mode liquid crystal cell, rod-like liquid crystal molecules are substantially horizontally aligned when no voltage is applied, and are twisted and aligned at 60 to 120 °. The TN mode liquid crystal cell is most frequently used as a color TFT liquid crystal display device, and is described in many documents.

In the VA mode and the IPS mode, the absorption axis of the polarizing film is generally arranged at 0 ° or 90 ° with respect to 0 ° in the horizontal direction of the display surface. It is preferable to combine with the optical film of the aspect shown in FIG.
In a VA mode liquid crystal cell, rod-like liquid crystalline molecules are aligned substantially vertically when no voltage is applied. The VA mode liquid crystal cell includes (1) a narrowly defined VA mode liquid crystal cell in which rod-like liquid crystalline molecules are aligned substantially vertically when no voltage is applied, and substantially horizontally when a voltage is applied (Japanese Patent Laid-Open No. Hei 2-). 176625) (2) Liquid crystal cell (SID97, Digest of tech. Papers (Preliminary Proceed) 28 (1997) 845 in which the VA mode is converted into a multi-domain (MVA mode) for widening the viewing angle. ), (3) A liquid crystal cell in a mode (n-ASM mode) in which rod-like liquid crystalline molecules are substantially vertically aligned when no voltage is applied and twisted multi-domain alignment is applied when a voltage is applied (Preliminary collections 58-59 of the Japan Liquid Crystal Society) (1998)) and (4) SURVIVAL mode liquid crystal cells (announced at LCD International 98). Moreover, any of PVA (Patterned Vertical Alignment) type, optical alignment type (Optical Alignment), and PSA (Polymer-Sustained Alignment) may be used. Details of these modes are described in JP-A-2006-215326 and JP-T-2008-538819.
In an IPS mode liquid crystal cell, rod-like liquid crystal molecules are aligned substantially parallel to the substrate, and the liquid crystal molecules respond in a planar manner when an electric field parallel to the substrate surface is applied. The IPS mode displays black when no electric field is applied, and the absorption axes of the pair of upper and lower polarizing plates are orthogonal. JP-A-10-54982, JP-A-11-202323, and JP-A-9-292522 are methods for reducing leakage light at the time of black display in an oblique direction and improving a viewing angle using an optical compensation sheet. No. 11-133408, No. 11-305217, No. 10-307291, and the like.

[Polarizing plate for 3D image display system]
In the stereoscopic image display system of the present invention, in order to make the viewer recognize a stereoscopic image called 3D video, the image is recognized through the polarizing plate. One aspect of the polarizing plate is polarized glasses. In the aspect in which the right-polarized and left-eye circularly polarized images are formed by the retardation plate, circularly polarized glasses are used, and in the aspect in which the linearly polarized images are formed, linear glasses are used. Right-eye image light emitted from one of the first and second retardation regions of the patterned optically anisotropic layer is transmitted through the right glasses and shielded by the left glasses, and the first and second It is preferable that the image light for the left eye emitted from the other of the phase difference regions is transmitted through the left glasses and shielded by the right glasses.
The polarizing glasses form polarizing glasses by including a retardation functional layer and a linear polarizer. In addition, you may use the other member which has a function equivalent to a linear polarizer.

  A specific configuration of the 3D image display system of the present invention including the polarizing glasses will be described. First, the retardation film is formed on a plurality of first lines and a plurality of second lines that are alternately repeated on the video display panel (for example, on odd-numbered lines and even-numbered lines in the horizontal direction if the lines are in the horizontal direction). The first phase difference region and the second phase difference region having different polarization conversion functions are provided on the odd-numbered and even-numbered lines in the vertical direction if the line is in the vertical direction. When circularly polarized light is used for display, the phase difference between the first phase difference region and the second phase difference region is preferably λ / 4, and the first phase difference region and the first phase difference region are In the two phase difference region, it is more preferable that the slow axes are orthogonal.

When using circularly polarized light, the phase difference values of the first phase difference region and the second phase difference region are both set to λ / 4, the right eye image is displayed on the odd lines of the video display panel, and the odd line phase difference is displayed. If the slow axis of the region is in the 45 degree direction, it is preferable to arrange λ / 4 plates on both the right and left glasses of the polarized glasses, and the slow axis of the λ / 4 plate of the right glasses of the polarized glasses is Specifically, it may be fixed at approximately 45 degrees. In the above situation, similarly, the left eye image is displayed on the even line of the video display panel, and if the slow axis of the even line phase difference region is in the direction of 135 degrees, the left eyeglass of the polarizing glasses Specifically, the slow axis may be fixed at approximately 135 degrees.
Furthermore, from the viewpoint of emitting image light as circularly polarized light once in the patterning retardation film and returning the polarization state to the original state by the polarized glasses, the angle of the slow axis fixed by the right glasses in the above example is accurate. The closer to 45 degrees in the horizontal direction, the better. Further, it is preferable that the angle of the slow axis fixed by the left spectacles is exactly close to horizontal 135 degrees (or -45 degrees).

For example, when the video display panel is a liquid crystal display panel, the absorption axis direction of the front-side polarizing plate of the liquid crystal display panel is usually a horizontal direction, and the absorption axis of the linear polarizer of the polarizing glasses is the front-side polarization The direction perpendicular to the absorption axis direction of the plate is preferable, and the absorption axis of the linear polarizer of the polarizing glasses is more preferably the vertical direction.
Further, the absorption axis direction of the front-side polarizing plate of the liquid crystal display panel and the slow axis of the odd-numbered phase retardation region and the even-numbered phase retardation region of the patterning retardation film are 45 degrees in terms of the efficiency of polarization conversion. It is preferable to make it.
A preferable arrangement of such polarizing glasses, a patterning retardation film, and a liquid crystal display device is disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-170693.

  Examples of polarized glasses include those described in Japanese Patent Application Laid-Open No. 2004-170693, and examples of commercially available products include accessories of ZM-man and ZM-M220W.

  Hereinafter, the present invention will be described in more detail based on examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the following examples.

Example 1
<Preparation of transparent support A>
The following composition was put into a mixing tank and stirred while heating to dissolve each component to prepare a cellulose acylate solution A.
────────────────────────────────────
Composition of Cellulose Acylate Solution A────────────────────────────────────
Cellulose acetate having a substitution degree of 2.86 100 parts by weight Triphenyl phosphate (plasticizer) 7.8 parts by weight Biphenyl diphenyl phosphate (plasticizer) 3.9 parts by weight Methylene chloride (first solvent) 300 parts by weight Methanol (second solvent) ) 54 parts by mass 1-butanol 11 parts by mass ─────────────────────────────────────

The following composition was charged into another mixing tank, stirred while heating to dissolve each component, and an additive solution B was prepared.
────────────────────────────────────
Composition of additive solution B ─────────────────────────────────────
The following compound B1 (Re reducing agent) 40 parts by mass The following compound B2 (wavelength dispersion controlling agent) 4 parts by mass Methylene chloride (first solvent) 80 parts by mass Methanol (second solvent) 20 parts by mass ──────── ────────────────────────────

<< Preparation of transparent cellulose acetate support >>
A dope was prepared by adding 40 parts by mass of the additive solution B to 477 parts by mass of the cellulose acylate solution A and stirring sufficiently. The dope was cast from a casting port onto a drum cooled to 0 ° C. The film is peeled off at a solvent content of 70% by mass, and both ends in the width direction of the film are fixed with a pin tenter (a pin tenter described in FIG. 3 of JP-A-4-1009), and the solvent content is 3 to 5% by mass. Then, it was dried while maintaining an interval at which the stretching ratio in the transverse direction (direction perpendicular to the machine direction) was 3%. Then, it dried further by conveying between the rolls of a heat processing apparatus, and produced the 60-micrometer-thick cellulose acetate protective film (transparent support body A). Transparent support A did not contain an ultraviolet absorber, Re (550) was 0 nm, and Rth (550) was 12.3 nm.

<< Alkaline saponification treatment >>
The cellulose acetate transparent support A is passed through a dielectric heating roll having a temperature of 60 ° C., and the film surface temperature is raised to 40 ° C. Then, an alkali solution having the composition shown below is applied to one side of the film using a bar coater. The coating was applied at a coating amount of 14 ml / m ² , heated to 110 ° C., and conveyed for 10 seconds under a steam far infrared heater manufactured by Noritake Company Limited. Subsequently, 3 ml / m ^{2 of} pure water was applied using the same bar coater. Next, washing with a fountain coater and draining with an air knife were repeated three times, followed by transporting to a drying zone at 70 ° C. for 10 seconds and drying to prepare an alkali saponified cellulose acetate transparent support A.

────────────────────────────────────
Composition of alkaline solution (parts by mass)
────────────────────────────────────
Potassium hydroxide 4.7 parts by weight Water 15.8 parts by weight Isopropanol 63.7 parts by weight Surfactant SF-1: C ₁₄ H ₂₉ O (CH ₂ CH ₂ O) ₂₀ H 1.0 part by weight Propylene glycol 14. 8 parts by mass ────────────────────────────────────

<Preparation of transparent support A with pattern alignment film>
A surface of the transparent support A produced in Example 1 subjected to a saponification treatment was coated with a 10% methyl ethyl ketone / methanol mixed solution of polyvinyl cinnamate (manufactured by Sigma Aldrich) and dried at 100 ° C. for 1 minute. The film thickness of the obtained film was 0.5 μm. The obtained film was subjected to one reciprocating rubbing treatment at 1000 rpm at an angle of 45 degrees with respect to the film transport direction. Next, a stripe mask was placed on the film so that the stripe was parallel to the transport direction, and irradiated with ultraviolet rays using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) of 160 W / cm ² under air. . At this time, exposure was performed using a stripe mask having a stripe width of 285 μm at the transmission portion and a stripe width of 285 μm at the shielding portion, thereby forming a pattern alignment film. The distance between the exposure mask surface and the film was set to 200 μm. The illuminance of the ultraviolet rays used was 100 mW / cm ² in the UV-A region (integration of wavelengths from 320 nm to 380 nm), and the irradiation amount was 1000 mJ / cm ² in the UV-A region.

<Preparation of patterned optical anisotropic layer A>
After preparing the following composition for optically anisotropic layers, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating solution. The coating solution is applied onto the transparent support A with a pattern alignment film, dried at a film surface temperature of 105 ° C. for 2 minutes to form a liquid crystal phase, cooled to 75 ° C., and 160 W / cm ² under air. An ultraviolet ray was irradiated using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) to fix the orientation state, and an attempt was made to produce the patterned optical anisotropic layer A. The film thickness of the patterned optically anisotropic layer was 1.3 μm.

──────────────────────────────────────
Composition for optically anisotropic layers ──────────────────────────────────────
Rod-shaped liquid crystalline compound (LC242, manufactured by BASF Corporation) 100 parts by mass horizontal alignment agent A 0.3 parts by mass photopolymerization initiator 3.3 parts by mass (Irgacure 907, manufactured by Ciba Specialty Chemicals Co., Ltd.)
Sensitizer (Kayacure-DETX, manufactured by Nippon Kayaku Co., Ltd.) 1.1 parts by weight Methyl ethyl ketone 300 parts by weight ───────────────────────── ─────────────

(Evaluation of patterned optical anisotropic layer)
After peeling off the produced patterned optically anisotropic layer from the transparent support A, two polarizing plates in which the slow axis of either the first retardation region or the second retardation region is combined in an orthogonal position Between the polarizing plates so as to be parallel to any one of the polarizing axes, and further, a sensitive color plate having a phase difference of 530 nm, so that the slow axis forms an angle of 45 ° with the polarizing axis of the polarizing plate, It was placed on the optically anisotropic layer. Next, the state in which the optically anisotropic layer was rotated by + 45 ° was observed with a polarizing microscope (NECON ECLIPIE E600W POL). As is apparent from the observation results shown in FIG. 7, when rotated by + 45 °, the slow axis of the first phase difference region (unexposed portion) and the slow axis of the sensitive color plate are parallel. The phase difference is larger than 530 nm, and the color is changed to blue (the dark and light part in the black and white drawing). On the other hand, since the slow axis of the second phase difference region (exposure portion) is orthogonal to the slow axis of the sensitive color plate, the phase difference is smaller than 530 nm, and the color is white (light and shade in the black and white drawing). Part). Table 1 shows the relationship between the slow axis of the optically anisotropic layer and the direction of the exposure direction of the pattern alignment film. From the results shown in Table 1, the first phase difference region and the second phase difference region in which the rod-like liquid crystalline compound is aligned on the pattern alignment film and exposed to be horizontally aligned and the slow axes are orthogonal to each other. It can be understood that a patterned optical anisotropic layer having the following can be obtained.

  Next, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1. In the following table, “horizontal” means that the major axis direction of the rod-like liquid crystal compound is 0 ° to 20 ° in a direction parallel to the film surface.

<Production of functional layer A>
<< Preparation of antireflection film >>
[Preparation of coating solution for hard coat layer]
The following composition was put into a mixing tank and stirred to obtain a hard coat layer coating solution.
To 900 parts by mass of methyl ethyl ketone, 100 parts by mass of cyclohexanone, 750 parts by mass of partially caprolactone-modified polyfunctional acrylate (DPCA-20, manufactured by Nippon Kayaku Co., Ltd.), silica sol (MIBK-ST, manufactured by Nissan Chemical Industries, Ltd.) ) 200 parts by mass and 50 parts by mass of a photopolymerization initiator (Irgacure 184, manufactured by Ciba Specialty Chemicals) were added and stirred. The solution was filtered through a polypropylene filter having a pore size of 0.4 μm to prepare a coating solution for a hard coat layer.

[Preparation of coating liquid A for medium refractive index layer]
Hard coating agent containing ZrO ₂ fine particles (Desolite Z7404 [refractive index 1.72, solid content concentration: 60% by mass, zirconium oxide fine particle content: 70% by mass (solid content), average particle size of zirconium oxide fine particles: about 20 nm, Solvent composition: methyl isobutyl ketone / methyl ethyl ketone = 9/1, manufactured by JSR Corporation]) 5.1 parts by mass, mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (DPHA) 1.5 parts by mass, light A polymerization initiator (Irgacure 907, manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.05 parts by mass, methyl ethyl ketone 66.6 parts by mass, methyl isobutyl ketone 7.7 parts by mass and cyclohexanone 19.1 parts by mass were added and stirred. did. After sufficiently stirring, the mixture was filtered through a polypropylene filter having a pore diameter of 0.4 μm to prepare a coating solution A for medium refractive index layer.

[Preparation of coating liquid B for medium refractive index layer]
Mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (DPHA) 4.5 parts by mass, photopolymerization initiator (Irgacure 907, manufactured by Ciba Specialty Chemicals) 0.14 parts by mass, methyl ethyl ketone 66.5 Part by mass, 9.5 parts by mass of methyl isobutyl ketone and 19.0 parts by mass of cyclohexanone were added and stirred. After sufficiently stirring, it was filtered through a polypropylene filter having a pore diameter of 0.4 μm to prepare a coating solution B for medium refractive index layer.

  A medium refractive index coating solution was prepared by mixing an appropriate amount of medium refractive index coating solution A and medium refractive index coating solution B so that the refractive index was 1.36 and the film thickness was 90 μm.

[Preparation of coating solution for high refractive index layer]
Hard coating agent containing ZrO ₂ fine particles (Desolite Z7404 [refractive index 1.72, solid content concentration: 60% by mass, zirconium oxide fine particle content: 70% by mass (solid content), average particle size of zirconium oxide fine particles: about 20 nm, Photopolymerization initiator contained, solvent composition: methyl isobutyl ketone / methyl ethyl ketone = 9/1, manufactured by JSR Corporation]) 14.4 parts by mass, mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (DPHA) 0 .75 parts by mass, 62.0 parts by mass of methyl ethyl ketone, 3.4 parts by mass of methyl isobutyl ketone, and 1.1 parts by mass of cyclohexanone were added and stirred. After sufficiently stirring, the mixture was filtered through a polypropylene filter having a pore size of 0.4 μm to prepare a coating solution C for a high refractive index layer.

[Preparation of coating solution for low refractive index layer]
(Synthesis of perfluoroolefin copolymer (1))

Into an autoclave with a stirrer made of stainless steel having an internal volume of 100 ml, 40 ml of ethyl acetate, 14.7 g of hydroxyethyl vinyl ether and 0.55 g of dilauroyl peroxide were charged, and the inside of the system was deaerated and replaced with nitrogen gas. Further, 25 g of hexafluoropropylene (HFP) was introduced into the autoclave and the temperature was raised to 65 ° C. The pressure when the temperature in the autoclave reached 65 ° C. was 0.53 MPa (5.4 kg / cm ² ). The reaction was continued for 8 hours while maintaining the temperature, and when the pressure reached 0.31 MPa (3.2 kg / cm ² ), the heating was stopped and the mixture was allowed to cool. When the internal temperature dropped to room temperature, unreacted monomers were driven out, the autoclave was opened, and the reaction solution was taken out. The obtained reaction solution was poured into a large excess of hexane, and the polymer was precipitated by removing the solvent by decantation. Further, this polymer was dissolved in a small amount of ethyl acetate and reprecipitated twice from hexane to completely remove the residual monomer. After drying, 28 g of polymer was obtained. Next, 20 g of the polymer was dissolved in 100 ml of N, N-dimethylacetamide, and 11.4 g of acrylic acid chloride was added dropwise under ice cooling, followed by stirring at room temperature for 10 hours. Ethyl acetate was added to the reaction solution, washed with water, the organic layer was extracted and concentrated, and the resulting polymer was reprecipitated with hexane to obtain 19 g of perfluoroolefin copolymer (1). The obtained polymer had a refractive index of 1.422 and a mass average molecular weight of 50,000.

[Preparation of Hollow Silica Particle Dispersion A]
Hollow silica particle fine particle sol (isopropyl alcohol silica sol, CS60-IPA manufactured by Catalytic Chemical Industry Co., Ltd., average particle diameter 60 nm, shell thickness 10 nm, silica concentration 20 mass%, silica particle refractive index 1.31) in 500 parts by mass, After 30 parts by mass of acryloyloxypropyltrimethoxysilane and 1.51 parts by mass of diisopropoxyaluminum ethyl acetate were added and mixed, 9 parts by mass of ion-exchanged water was added. After making it react at 60 degreeC for 8 hours, it cooled to room temperature and added 1.8 mass parts of acetylacetone, and obtained the dispersion liquid. Then, while adding cyclohexanone so that the silica content was almost constant, solvent substitution was performed by distillation under reduced pressure at a pressure of 30 Torr, and finally a dispersion A having a solid content concentration of 18.2% by mass was obtained by adjusting the concentration. . The amount of IPA remaining in the obtained dispersion A was analyzed by gas chromatography and found to be 0.5% by mass or less.

[Preparation of coating solution for low refractive index layer]
Each component was mixed as described below and dissolved in methyl ethyl ketone to prepare a coating solution Ln6 for a low refractive index layer having a solid content concentration of 5% by mass. The mass% of each component below is the ratio of the solid content of each component to the total solid content of the coating solution.

──────────────────────────────────────
-P-1: Perfluoroolefin copolymer (1) 15 mass%
DPHA: Mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (manufactured by Nippon Kayaku Co., Ltd.) 7% by mass
MF1: 5% by mass of the following fluorine-containing unsaturated compound (weight average molecular weight 1600) described in Examples of International Publication No. 2003/022906
-M-1: Nippon Kayaku Co., Ltd. KAYARAD DPHA 20 mass%
-Dispersion A: Hollow silica particle dispersion A (hollow silica particle sol surface-modified with acryloyloxypropyltrimethoxysilane, solid concentration 18.2%) 50% by mass
・ Irg127: Photopolymerization initiator Irgacure 127 (Ciba Specialty)
Chemicals Co., Ltd.) 3% by mass
──────────────────────────────────────

TD80UL (Re / Rth = 2/40 at 550 nm, manufactured by FUJIFILM Corporation) is used as the functional layer support A, and the hard coat layer coating liquid A having the above composition is coated on the functional layer support A with a gravure coater. Applied. Note that TD80UL contains an ultraviolet absorber. After drying at 100 ° C., an irradiance of 400 mW / cm using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) of 160 W / cm while purging with nitrogen so that the oxygen concentration becomes 1.0 vol% or less. ^{2. The} coating layer was cured by irradiating with an irradiation amount of 150 mJ / cm ² to form a hard coat layer A having a thickness of 12 μm.
Further, a medium refractive index layer coating solution, a high refractive index layer coating solution, and a low refractive index layer coating solution A were applied using a gravure coater. The medium refractive index layer was dried at 90 ° C. for 30 seconds, and the ultraviolet curing condition was 180 W / cm air-cooled metal halide lamp (eye graphics) while purging with nitrogen so that the atmosphere had an oxygen concentration of 1.0% by volume or less. ), And the irradiation dose was 300 mW / cm ² and the irradiation dose was 240 mJ / cm ² .
The drying condition of the high refractive index layer is 90 ° C. for 30 seconds, and the ultraviolet curing condition is a 240 W / cm air-cooled metal halide lamp (eye graphics) while purging with nitrogen so that the atmosphere has an oxygen concentration of 1.0% by volume or less. ), And the irradiation dose was 300 mW / cm ² and the irradiation dose was 240 mJ / cm ² .
The low refractive index layer was dried at 90 ° C. for 30 seconds, and the ultraviolet curing condition was 240 W / cm air-cooled metal halide lamp (eye graphics) while purging with nitrogen so that the atmosphere had an oxygen concentration of 0.1% by volume or less. ), And the irradiation amount was 600 mW / cm ² and the irradiation amount was 600 mJ / cm ² . Thus, the functional layer A was produced.

<Preparation of optical film A>
The TD80UL surface of the prepared functional layer A and the optically anisotropic layer surface of the patterned optically anisotropic layer A were bonded with an adhesive to prepare an optical film A.

<Preparation of polarizing plate A>
TD80UL (Re / Rth = 2/40 at 550 nm, manufactured by FUJIFILM Corporation) was used as a protective film A for polarizing plate A, and this surface was subjected to alkali saponification treatment. It was immersed in a 1.5 N aqueous sodium hydroxide solution at 55 ° C. for 2 minutes, washed in a water bath at room temperature, and neutralized with 0.1 N sulfuric acid at 30 ° C. Again, it was washed in a water bath and further dried with hot air at 100 ° C.
Subsequently, a roll-shaped polyvinyl alcohol film having a thickness of 80 μm was continuously stretched 5 times in an iodine aqueous solution and dried to obtain a polarizing film having a thickness of 20 μm. Using a 3% aqueous solution of polyvinyl alcohol (Kuraray PVA-117H) as an adhesive, the alkali saponified TD80UL and the same alkali saponified VA retardation film (Re / Rth = 550/550 nm, manufactured by FUJIFILM Corporation) 125) is sandwiched between the polarizing films so that the saponified surface is on the polarizing film side, and a polarizing plate A in which the TD80UL and the VA retardation film are protective films for the polarizing film is produced. did. At this time, the angle formed by the slow axis of the retardation film and the absorption axis of the polarizing film was made vertical.

<Preparation of polarizing plate A with optical film A>
The transparent support A surface of the optical film A prepared above and the TD80UL surface of the polarizing plate A were bonded together with an adhesive to prepare a polarizing plate A with an optical film A. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device A>
The polarizing plate on the viewer side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film of the polarizing plate A with optical film A produced above and the LC cell were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the retardation film for VA of the polarizing plate A and the LC cell were bonded together with an adhesive. With this procedure, the stereoscopic display device A having the configuration shown in FIG. The direction of the absorption axis of the polarizing film is the same as in FIG.

(Example 2)
<Transparent support B>
TD80UL (manufactured by FUJIFILM Corporation) was prepared and used as the transparent support B. The film thickness of TD80UL was 80 μm, the in-plane retardation Re (550) was 2 nm, and the retardation Rth (550) in the thickness direction was 40 nm.

<Preparation of patterned optical anisotropic layer B>
A patterned optically anisotropic layer B was prepared in the same manner as in Example 1 except that the transparent support A was changed to the transparent support B. The film thickness of the optically anisotropic layer was 1.3 μm.

(Evaluation of optically anisotropic layer B)
After peeling off the produced optically anisotropic layer B from the transparent support B, the direction of the slow axis of the optically anisotropic layer was determined in the same manner as in Example 1. Table 1 shows the relationship between the slow axis of the optically anisotropic layer and the rubbing direction of the pattern alignment film. From the results shown in Table 1, by aligning the rod-like liquid crystal compound on the pattern alignment film in the presence of the horizontal alignment agent, the first retardation region having the horizontal axis and the slow axis orthogonal to the first phase difference region It can be understood that a patterned optically anisotropic layer having two retardation regions can be obtained.

<Preparation of optical film B>
An antireflection film was formed on the TD80UL surface of the patterned optically anisotropic layer B by the same method as in Example 1 to produce an optical film B.

<Preparation of polarizing plate B with optical film B>
The patterned optically anisotropic layer B surface of the optical film B produced above and the TD80UL surface of the polarizing plate A produced in Example 1 were bonded together with an adhesive to produce a polarizing plate B with an optical film B. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer B and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device B>
The polarizing plate on the viewing side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film and LC cell of the polarizing plate B with optical film B produced above were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the retardation film for VA of the polarizing plate A and the LC cell were bonded together with an adhesive. The stereoscopic display device B having the configuration shown in FIG. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Example 3)
<Transparent support C>
A cellulose acylate solution (dope) was prepared with the following composition.

――――――――――――――――――――――――――――――――――――――
Methylene chloride 435 parts by weight Methanol 65 parts by weight Cellulose acylate benzoate (CBZ) 100 parts by weight
(Acetyl substitution degree 2.45, benzoyl substitution degree 0.55, mass average molecular weight 180000)
Silicon dioxide fine particles (average particle size 20nm, Mohs hardness about 7) 0.25 parts by mass ――――――――――――――――――――――――――――――― ―――――――

  The obtained dope was cast on a film-forming band, dried at room temperature for 1 minute, and then dried at 45 ° C. for 5 minutes. The residual amount of solvent after drying was 30% by mass. The cellulose acylate film was peeled from the band, dried at 100 ° C. for 10 minutes, and then dried at 130 ° C. for 20 minutes to obtain a transparent support C. The residual solvent amount was 0.1% by mass. The transparent support C did not contain an ultraviolet absorber, the film thickness was 45 μm, Re (550) was 0 nm, and Rth (550) was −75 nm.

<Preparation of patterned optical anisotropic layer C>
The pattern support is anisotropic in the same manner as in Example 1 except that the transparent support A is changed to the transparent support C and a reciprocating rubbing process is performed at 1000 rpm at an angle of 0 degrees with respect to the film transport direction. The conductive layer C was produced. The film thickness of the optically anisotropic layer was 1.3 μm.

(Evaluation of optically anisotropic layer C)
After peeling off the produced optically anisotropic layer C from the transparent support C, the direction of the slow axis of the optically anisotropic layer was determined in the same manner as in Example 1. Table 1 shows the relationship between the slow axis of the optically anisotropic layer and the rubbing direction of the pattern alignment film. From the results shown in Table 1, by aligning the rod-like liquid crystal compound on the pattern alignment film in the presence of the horizontal alignment agent, the first retardation region having the horizontal axis and the slow axis orthogonal to the first phase difference region It can be understood that a patterned optically anisotropic layer having two retardation regions can be obtained.

<Preparation of optical film C>
An antireflection film was formed on the surface of the transparent support C of the patterned optically anisotropic layer C by the same method as in Example 1 to produce an optical film C.

<Preparation of polarizing plate C>
TD80UL (Re / Rth = 2/40 at 550 nm, manufactured by FUJIFILM Corporation) was used as the protective film C for the polarizing plate C, and this surface was subjected to alkali saponification treatment. It was immersed in a 1.5 N aqueous sodium hydroxide solution at 55 ° C. for 2 minutes, washed in a water bath at room temperature, and neutralized with 0.1 N sulfuric acid at 30 ° C. Again, it was washed in a water bath and further dried with hot air at 100 ° C.
Subsequently, a roll-shaped polyvinyl alcohol film having a thickness of 80 μm was continuously stretched 5 times in an iodine aqueous solution and dried to obtain a polarizing film having a thickness of 20 μm. Using a 3% aqueous solution of polyvinyl alcohol (Kuraray PVA-117H) as an adhesive, a support surface of WV-EA (manufactured by FUJIFILM) subjected to alkali saponification in the same manner as the saponified surface of TD80UL subjected to the above alkali saponification treatment, A polarizing plate C was prepared by being sandwiched between polarizing films.

<Preparation of polarizing plate C with optical film C>
The patterned optically anisotropic layer C surface of the produced optical film C and the TD80UL surface of the polarizing plate C were bonded together with an adhesive to produce a polarizing plate C with an optical film C. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer C and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device C>
The pattern retardation plate and the front polarizing plate used in the circular polarized glasses 3D monitor (manufactured by ZALMAN, TN mode) are peeled off, the polarizing plate prepared above is bonded, and the three-dimensional structure shown in FIG. Display device C was produced. The direction of the absorption axis of the polarizing film was the same as in FIG.

Example 4
<Preparation of pure ace support with pattern alignment film>
A pure ace film manufactured by Teijin Chemicals Ltd. having Re (550) of 138 nm and Rth (550) of 69 nm was used. After preparing the following pattern alignment film composition, it was filtered through a polypropylene filter having a pore size of 0.2 μm to prepare a pattern alignment film coating solution. The coating solution was applied to the surface of Pure Ace with a No. 14 bar and dried at 100 ° C. for 1 minute. Next, an air-cooled metal halide lamp having an illuminance of 50 mW / cm ² at 365 nm under air is provided by placing a stripe mask on the film so that the stripe is parallel to the transport direction and 45 ° to the slow axis of Pure Ace. The first retardation layer alignment layer was formed by irradiating ultraviolet rays for 2 seconds using (Igraphics Co., Ltd.) to decompose the photoacid generator and generate an acidic compound. At this time, exposure was performed using a stripe mask having a stripe width of 285 μm at the transmission portion and a stripe width of 285 μm at the shielding portion. The distance between the exposure mask surface and the pattern alignment film was set to 200 μm. After the mask exposure, a reciprocating rubbing process was performed at 1000 rpm at 45 ° with respect to the film transport direction and at an angle of 90 ° with the pure ace slow axis. The film thickness of the pattern alignment film was 0.5 μm.

<Composition for pattern alignment film>
2.4 parts by mass of polymer material (PVA103, Kuraray Co., Ltd. polyvinyl alcohol)
Photoacid generator (S-5) 0.11 parts by weight Methanol 16.7 parts by weight Isopropanol 7.4 parts by weight Water 73.4 parts by weight

<Preparation of patterned optical anisotropic layer D>
After preparing the following composition for optically anisotropic layers, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating solution. The coating solution is applied onto the transparent support D with a pattern alignment film, dried at a film surface temperature of 105 ° C. for 2 minutes to form a liquid crystal phase, cooled to 75 ° C., and 160 W / cm ² under air. An ultraviolet ray was irradiated using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) to fix the orientation state, and an attempt was made to produce the patterned optical anisotropic layer D. The film thickness of the optically anisotropic layer was 2.8 μm.

──────────────────────────────────────
Composition for optically anisotropic layers ──────────────────────────────────────
The rod-like liquid crystalline compound (LC242, manufactured by BASF Corporation) 100 parts by mass vertical alignment agent A 0.5 parts by mass photopolymerization initiator 3.3 parts by mass (Irgacure 907, manufactured by Ciba Specialty Chemicals Co., Ltd.)
Sensitizer (Kayacure-DETX, manufactured by Nippon Kayaku Co., Ltd.) 1.1 parts by weight Methyl ethyl ketone 300 parts by weight ───────────────────────── ─────────────

The first retardation region (exposed portion) and the second retardation region (unexposed portion) of the formed patterned optically anisotropic layer D were each subjected to TOF-SIMS (time of flight secondary ion mass spectrometry, ION-TOF). When analyzed by TOF-SIMS V), the ratio of the photoacid generator S-5 in the corresponding alignment layer is 10:90 in the first retardation region and the second retardation region, It was found that S-5 was almost decomposed in the phase difference region. In the optically anisotropic layer D, the cations and anions of the vertical alignment agent A are hardly observed at the alignment film interface in the first retardation region, and these ions are present in the alignment film interface in the second retardation region. Was observed, and it was found that the vertical alignment agent A was present in the vicinity of the alignment film interface in the unexposed area. From this, in the second retardation region (unexposed portion), the vertical alignment agent A is unevenly distributed at the alignment film interface, but in the first retardation region (exposed portion), the uneven distribution is reduced and diffused. In addition, in the first retardation region (exposed portion), it can be understood that diffusion of cations of the vertical alignment agent A is promoted by anion exchange between the generated acid CF ₃ SO ₃ H and the vertical alignment agent. .

(Evaluation of optically anisotropic layer)
Next, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1. In the following table, horizontal means that the major axis direction of the rod-like liquid crystalline compound is 0 ° to 20 ° in a direction parallel to the film surface, and vertical means 70 ° to 90 °.

  From the results shown in Table 1, by aligning the rod-like liquid crystalline compound on the pattern alignment film in the presence of the vertical alignment agent, the rod-like liquid crystalline compound is horizontally aligned in the first retardation region (exposed portion). It can be understood that a patterned optically anisotropic layer in which rod-like liquid crystalline compounds are vertically aligned is obtained in the retardation region (unexposed portion).

<Production of functional layer D>
The transparent support C produced in Example 3 was used as the functional layer support D, and the functional layer D was produced on the functional layer support D in the same manner as in Example 1.

<Preparation of optical film D>
The transparent support D of the produced functional layer D and the optically anisotropic layer surface of the patterned optically anisotropic layer D were bonded with an adhesive to produce an optical film D.

<Preparation of polarizing plate D>
TD80UL (Re / Rth = 2/40 at 550 nm, manufactured by FUJIFILM Corporation) was used as the protective film D for the polarizing plate D, and this surface was subjected to alkali saponification treatment. It was immersed in a 1.5 N aqueous sodium hydroxide solution at 55 ° C. for 2 minutes, washed in a water bath at room temperature, and neutralized with 0.1 N sulfuric acid at 30 ° C. Again, it was washed in a water bath and further dried with hot air at 100 ° C.
Subsequently, a roll-shaped polyvinyl alcohol film having a thickness of 80 μm was continuously stretched 5 times in an iodine aqueous solution and dried to obtain a polarizing film having a thickness of 20 μm. Using a 3% aqueous solution of polyvinyl alcohol (Kuraray PVA-117H) as an adhesive, the above alkali saponified TD80UL and the same alkali saponified VA retardation film (Re / Rth = 550/550 nm, manufactured by FUJIFILM Corporation) 125) is sandwiched between the polarizing films so that these saponified surfaces are on the polarizing film side, and a polarizing plate D in which the TD80UL and the VA retardation film serve as a protective film for the polarizing film is produced. did. At this time, the angle formed by the slow axis of the retardation film and the absorption axis of the polarizing film was made vertical.

<Preparation of polarizing plate D with optical film D>
The pure ace support surface of the produced optical film D and the TD80UL surface of the polarizing plate D were bonded together with an adhesive to produce a polarizing plate D with an optical film D. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device D>
The polarizing plate on the viewer side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film of the polarizing plate D with optical film D produced above and the LC cell were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the VA retardation film of the polarizing plate D and the LC cell were bonded together with an adhesive. The stereoscopic display device D having the configuration shown in FIG. The direction of the absorption axis of the polarizing film is the same as in FIG.

(Example 5)
<Preparation of coating liquid E for hard coat layer>
The following composition was put into a mixing tank and stirred to obtain a hard coat layer coating solution E.
To 900 parts by mass of methyl ethyl ketone, 100 parts by mass of cyclohexanone, 750 parts by mass of partially caprolactone-modified polyfunctional acrylate (DPCA-20, manufactured by Nippon Kayaku Co., Ltd.), silica sol (MIBK-ST, manufactured by Nissan Chemical Industries, Ltd.) ) 200 parts by mass, photopolymerization initiator (Irgacure 819, manufactured by Ciba Japan), 100 parts by mass of the following benzotriazole ultraviolet absorber (TINUVIN 384-2, manufactured by Ciba Japan) Was added and stirred. A coating solution E for hard coat layer was prepared by filtering through a polypropylene filter having a pore size of 0.4 μm.

<Preparation of coating liquid E for low refractive index layer>
Each component was mixed as follows and dissolved in MEK (methyl ethyl ketone) to prepare a low refractive index layer coating solution having a solid content of 5% by mass.
Composition of low refractive index layer coating solution E 15 parts by mass of the following perfluoroolefin copolymer DPHA (mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate, manufactured by Nippon Kayaku Co., Ltd.) 7 parts by mass Defensa MCF- 323 (Fluorosurfactant, manufactured by Dainippon Ink & Chemicals, Inc.)
5 parts by mass The following fluorine-containing polymerizable compound 20 parts by mass Hollow silica particle dispersion A (solid content concentration 18.2% by mass) 50 parts by mass Irgacure 127 (photopolymerization initiator, manufactured by Ciba Japan Co., Ltd.) 3 parts by mass Part

<Formation of hard coat layer E>
On the optically anisotropic layer surface of the optically anisotropic layer B prepared in Example 2, the hard coat layer coating solution E was applied using a gravure coater. After drying at 100 ° C., an irradiance of 400 mW / cm using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) of 160 W / cm while purging with nitrogen so that the oxygen concentration becomes 1.0 vol% or less. ^{2. The} coating layer was cured by irradiating with an ultraviolet ray having an irradiation amount of 150 mJ / cm ² to form a hard coat layer E having a thickness of 12 μm.

<Formation of low refractive index layer E>
On the hard coat layer E, the coating solution E for low refractive index layer was applied using a gravure coater. Drying conditions are 90 ° C., 30 seconds, and UV curing conditions are 240 W / cm air-cooled metal halide lamp (made by Eye Graphics Co., Ltd.) while purging with nitrogen so that the oxygen concentration is 0.1 vol% or less. The irradiance was 600 mW / cm ² and the irradiation amount was 600 mJ / cm ² . The low refractive index layer had a refractive index of 1.36 and a film thickness of 90 nm.
As described above, an optical film E in which the hard coat layer E and the low refractive index layer E were laminated on the optical anisotropic layer B was produced.

<Preparation of polarizing plate E with optical film E>
The transparent support B of the produced optical film E and the TD80UL surface of the polarizing plate A produced in Example 1 were bonded together with an adhesive to produce a polarizing plate E with an optical film E. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer E and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device E>
The polarizing plate on the viewing side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film and LC cell of the polarizing plate E with optical film E produced above were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the retardation film for VA of the polarizing plate A and the LC cell were bonded together with an adhesive. The stereoscopic display device E having the configuration shown in FIG. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Example 6)
<Production of functional layer>
(Preparation of sol solution a)
A stirrer, a reactor equipped with a reflux condenser, 120 parts by mass of methyl ethyl ketone, 100 parts by mass of acryloyloxypropyltrimethoxysilane (KBM-5103, manufactured by Shin-Etsu Chemical Co., Ltd.), 3 parts by mass of diisopropoxyaluminum ethyl acetoacetate After adding and mixing, 30 parts by mass of ion-exchanged water was added and reacted at 60 ° C. for 4 hours, and then cooled to room temperature to obtain sol solution a. The mass average molecular weight was 1600, and among the components higher than the oligomer component, the component having a molecular weight of 1000 to 20000 was 100%. Further, from the gas chromatography analysis, the raw material acryloyloxypropyltrimethoxysilane did not remain at all.

(Preparation of coating solution F for antiglare layer)
31 g of a mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate (PET-30, manufactured by Nippon Kayaku Co., Ltd.) was diluted with 38 g of methyl isobutyl ketone. Furthermore, 1.5 g of a polymerization initiator (Irgacure 184, manufactured by Ciba Specialty Chemicals Co., Ltd.) was added and mixed and stirred. Subsequently, 0.04 g of a fluorine-based surface modifier (FP-148) and 6.2 g of a silane coupling agent (KBM-5103, manufactured by Shin-Etsu Chemical Co., Ltd.) were added. The refractive index of the coating film obtained by applying this solution and curing with ultraviolet rays was 1.520. Finally, 30 of crosslinked poly (acryl-styrene) particles having an average particle diameter of 3.5 μm (copolymerization composition ratio = 50/50, refractive index 1.540) dispersed in this solution for 20 minutes at 10,000 rpm with a Polytron disperser. 39.0 g of% cyclohexanone dispersion was added to obtain a finished solution. The mixed solution was filtered through a polypropylene filter having a pore size of 30 μm to prepare a coating solution F for an antiglare layer.

(Preparation of coating solution F for low refractive index layer)
Thermally crosslinkable fluorine-containing polymer having a refractive index of 1.44 containing polysiloxane and hydroxyl group (JTA113, solid content concentration 6%, manufactured by JSR Corporation) 13 g, colloidal silica dispersion MEK-ST-L (trade name, average) Particle size 45 nm, solid content concentration 30%, Nissan Chemical Co., Ltd.) 1.3 g, the sol solution a 0.6 g, methyl ethyl ketone 5 g and cyclohexanone 0.6 g were added, and after stirring, a polypropylene filter having a pore size of 1 μm And a low refractive index layer coating solution F was prepared. The refractive index of the layer formed with this coating solution was 1.45.

(1) Coating of anti-glare layer An 80 μm-thick triacetyl cellulose film (TAC-TD80U, manufactured by FUJIFILM Corporation, Re / Rth = 2/40) is unwound in a roll form, and The coating solution F for the antiglare layer is applied by the die coating method shown in the apparatus configuration and application conditions described in [0172] of Japanese Patent No. 41495, dried at 30 ° C. for 15 seconds and 90 ° C. for 20 seconds, and further purged with nitrogen Using a 160 W / cm air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.), the coating layer is cured by irradiating with an ultraviolet ray with an irradiation amount of 90 mJ / cm ² , and has an antiglare property having a thickness of 6 μm. A glare layer was formed.

(2) Coating of low refractive index layer The triacetyl cellulose film coated with the antiglare layer coating liquid F and coated with the antiglare layer is unwound again to obtain the low refractive index layer coating liquid F. The coating was applied under the basic conditions described in [2007] of JP 2007-41495, dried at 120 ° C. for 150 seconds, further dried at 140 ° C. for 8 minutes, and then purged with nitrogen to create an oxygen concentration 0.1 volume% atmosphere Using a 240 W / cm air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.), an ultraviolet ray with an irradiation amount of 900 mJ / cm ² is irradiated to form a low refractive index layer with a thickness of 100 nm to obtain a functional layer. It was.

  The surface of the optically anisotropic layer prepared in Example 1 (the surface on which the patterned optically anisotropic layer is formed) and the back surface of the functional layer prepared above (the antiglare layer and the low refractive index layer are The surface not formed) was bonded with an optically isotropic pressure-sensitive adhesive (SK-2057 manufactured by Soken Chemical Co., Ltd.). As described above, an optical film F in which an adhesive, a support, an antiglare layer and a low refractive index layer were laminated on the optically anisotropic layer A was produced.

<Preparation of polarizing plate F>
A roll-shaped polyvinyl alcohol film having a thickness of 80 μm was continuously stretched 5 times in an aqueous iodine solution and dried to obtain a polarizing film having a thickness of 20 μm. A VA retardation film (Re / Rth = 550/125 at 550 nm, manufactured by Fuji Film) and a transparent support A surface of the optical film F subjected to alkali saponification treatment in the same manner as in Example 1 were placed between the polarizing films. A polarizing plate F was produced in which the VA phase difference film and the transparent support A of the optical film F were a protective film for the polarizing film. At this time, the angle formed by the slow axis of the retardation film and the absorption axis of the polarizing film was set to 45 degrees.

<Production of stereoscopic display device F>
The polarizing plate on the viewing side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film of the polarizing plate F produced above and the LC cell were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the VA retardation film of the polarizing plate F and the LC cell were bonded together with an adhesive. With such a procedure, the stereoscopic display device F having the configuration shown in FIG. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Example 7)
<Formation of optically anisotropic layer with antiglare layer>
The antiglare layer coating solution F of Example 6 above was applied onto the transparent support B of the optically anisotropic layer B prepared in Example 2 above using a gravure coater, at 30 ° C. for 15 seconds, After drying at 90 ° C. for 20 seconds, the coating layer is cured by irradiating with an ultraviolet ray with an irradiation amount of 90 mJ / cm ² using a 160 W / cm air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) under a nitrogen purge. Thus, an optically anisotropic layer having an antiglare property having a thickness of 6 μm was produced.

<Formation of low refractive index layer>
On the optically anisotropic layer with an antiglare layer, the above-mentioned coating liquid F for a low refractive index layer was applied using a gravure coater. Drying conditions are 90 ° C., 30 seconds, and UV curing conditions are 240 W / cm air-cooled metal halide lamp (made by Eye Graphics Co., Ltd.) while purging with nitrogen so that the oxygen concentration is 0.1 vol% or less. The irradiance was 600 mW / cm ² and the irradiation amount was 600 mJ / cm ² . The low refractive index layer had a refractive index of 1.36 and a film thickness of 90 nm.
As described above, an optical film G in which the antiglare layer and the low refractive index layer were laminated on the transparent support of the optically anisotropic layer B was produced.

<Preparation of polarizing plate G with optical film G>
The patterned optically anisotropic layer B of the optical film G produced above and the TD80UL surface of the polarizing plate A produced in Example 1 were bonded together with an adhesive to produce a polarizing plate G with an optical film G. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer B and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device G>
The polarizing plate on the viewing side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film and LC cell of the produced polarizing plate G with optical film G were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the retardation film for VA of the polarizing plate A and the LC cell were bonded together with an adhesive. The stereoscopic display device G having the configuration shown in FIG. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Comparative Example 1)
<Preparation of transparent support B with photo-alignment film>
A stereoscopic display device H was produced using the rod-like liquid crystalline compound and alignment film described in International Publication No. 2010/090429 pamphlet.
A 1% aqueous solution of photoalignment material E-1 having the following structure was applied to the surface subjected to saponification treatment of the transparent support B used in Example 2, and dried at 100 ° C. for 1 minute. The obtained coating film was irradiated with ultraviolet rays using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) of 160 W / cm ² under air. At this time, as shown in FIG. 8A, a wire grid polarizer (Moxtek, ProFlux PPL02) is set in direction 1, and mask A (transmission part horizontal stripe width 285 μm, shielding part horizontal stripe). Exposure was performed through a stripe mask having a width of 285 μm. Thereafter, as shown in FIG. 8B, a wire grid polarizer is set in direction 2, and exposure is further performed through a mask B (a stripe mask having a lateral stripe width of 285 μm at the transmission portion and a lateral stripe width of 285 μm at the shielding portion). Went. The distance between the exposure mask surface and the photo-alignment film was set to 200 μm. The illuminance of ultraviolet rays used at this time was 100 mW / cm ² in the UV-A region (integration of wavelengths 380 nm to 320 nm), and the irradiation amount was 1000 mJ / cm ² in the UV-A region.

<Preparation of patterned optical anisotropic layer H>
After preparing the following composition for optically anisotropic layers, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating solution. The coating solution is applied onto the transparent support A with a photo-alignment film, dried at a film surface temperature of 105 ° C. for 2 minutes to form a liquid crystal phase, cooled to 75 ° C., and 160 W / cm ² under air. An attempt was made to fabricate the patterned optically anisotropic layer G by irradiating ultraviolet rays using an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) to fix the orientation state. The film thickness of the optically anisotropic layer was 1.3 μm.

──────────────────────────────────────
Composition for optically anisotropic layers ──────────────────────────────────────
Rod-shaped liquid crystalline compound (LC242, manufactured by BASF Corporation) 100 parts by mass horizontal alignment agent A 0.3 parts by mass photopolymerization initiator 3.3 parts by mass (Irgacure 907, manufactured by Ciba Specialty Chemicals Co., Ltd.)
Sensitizer (Kayacure-DETX, manufactured by Nippon Kayaku Co., Ltd.) 1.1 parts by weight Methyl ethyl ketone 300 parts by weight ───────────────────────── ─────────────

(Evaluation of optically anisotropic layer)
After peeling off the produced optically anisotropic layer from the transparent support B, the direction of the slow axis of the optically anisotropic layer was determined in the same manner as in Example 1. Table 1 shows the relationship between the slow axis of the optically anisotropic layer and the direction of the exposure direction of the alignment film. From the results shown in Table 1, by aligning and exposing the rod-like liquid crystalline compound on the photo-alignment film, the first retardation region and the second retardation region which are horizontal alignment and whose slow axes are orthogonal to each other are exposed. It can be understood that a patterned optically anisotropic layer having the following can be obtained.

<Preparation of optical film H>
The optical film H was produced by bonding the TD80UL surface of the functional layer A produced in Example 1 to the surface of the transparent support B of the patterned optically anisotropic layer H with an adhesive.

<Preparation of polarizing plate A with optical film H>
The patterned optically anisotropic layer H surface of the optical film H produced above and the TD80UL surface of the polarizing plate A produced in Example 1 were bonded together with an adhesive to produce a polarizing plate A with an optical film H. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer H and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device H>
The polarizing plate on the viewing side of FlexScan S2231W manufactured by Nanao Co., Ltd. was peeled off, and the VA retardation film of the polarizing plate A with optical film H and the LC cell produced above were bonded together with an adhesive. Subsequently, the polarizing plate on the light source side was peeled off, and the retardation film for VA of the polarizing plate A and the LC cell were bonded together with an adhesive. A 3D display device H having the configuration shown in FIG. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Comparative Example 2)
<Preparation of transparent support B with photo-alignment film>
A transparent support B with a photo-alignment film was produced on the surface of the transparent support B subjected to the saponification treatment by the same method as in Comparative Example 1.

<Preparation of patterned optical anisotropic layer I>
In the same manner as in Comparative Example 1, an attempt was made to produce the patterned optically anisotropic layer I on the transparent support B. The film thickness of the optically anisotropic layer was 1.3 μm.

<Preparation of optical film I>
The TD80UL surface of the functional layer A produced in Example 1 and the transparent support B of the patterned optically anisotropic layer I were bonded with an adhesive to produce an optical film I.

<Preparation of Polarizing Plate I>
TD80UL (manufactured by FUJIFILM Corporation, Re / Rth at 550 nm = 2/40) and WV-EA (manufactured by FUJIFILM Corporation) were used as the protective film I for polarizing plate I, and the surface was subjected to alkali saponification treatment. It was immersed in a 1.5 N aqueous sodium hydroxide solution at 55 ° C. for 2 minutes, washed in a water bath at room temperature, and neutralized with 0.1 N sulfuric acid at 30 ° C. Again, it was washed in a water bath and further dried with hot air at 100 ° C.
Subsequently, a roll-shaped polyvinyl alcohol film having a thickness of 80 μm was continuously stretched 5 times in an iodine aqueous solution and dried to obtain a polarizing film having a thickness of 20 μm. Using a 3% aqueous solution of polyvinyl alcohol (Kuraray PVA-117H) as an adhesive, the alkali saponified TD80UL and the support surface WV-EA subjected to the alkali saponification treatment, these saponified surfaces are polarizing films. The polarizing plate I in which TD80UL and WV-EA are protective films for the polarizing film was prepared by sandwiching them between the polarizing films.

<Preparation of Polarizing Film I with Optical Film I>
The patterned optically anisotropic layer I surface of the optical film I produced above and the TD80UL surface of the polarizing plate A produced in Example 1 were bonded with an adhesive to produce a polarizing plate I with an optical film I. At this time, the angle formed by the slow axis of the patterned optically anisotropic layer and the absorption axis of the polarizing film was set to ± 45 degrees.

<Production of stereoscopic display device I>
The pattern phase difference plate and front polarizing plate used in the circular polarizing glasses type 3D monitor (manufactured by ZALMAN, TN mode) are peeled off, the polarizing plate I prepared above is bonded, and the structure shown in FIG. A stereoscopic display device I was produced. The direction of the absorption axis of the polarizing film was the same as in FIG.

(Example 8)
An optical anisotropic layer A1-1 was produced in the same manner as in Example 1 except that the rod-like liquid crystal (LC242) was changed to Exemplified Compound I-1 in Example 1, and a stereoscopic display device J was produced. Further, in the same manner as in Example 1, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1.

Example 9
An optical anisotropic layer A1-2 was produced in the same manner as in Example 1 except that the rod-like liquid crystal compound (LC242) was changed to Exemplified Compound I-8 in Example 1, and a stereoscopic display device K was produced. Further, in the same manner as in Example 1, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1.

(Example 10)
In Example 1, optically anisotropic as in Example 1 except that polyvinyl cinnamate (manufactured by Sigma Aldrich) 10% methyl ethyl ketone / methanol mixed solution was changed to 10% methyl ethyl ketone / methanol mixed solution of Exemplified Compound a-3. The layer A1-3 was produced and the stereoscopic display device L was produced. Further, in the same manner as in Example 1, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1. In the following table, “horizontal” means that the major axis direction of the rod-like liquid crystal compound is 0 ° to 20 ° in a direction parallel to the film surface.

(Example 11)
In Example 1, optically anisotropic as in Example 1 except that polyvinyl cinnamate (manufactured by Sigma Aldrich) 10% methyl ethyl ketone / methanol mixed solution was changed to 10% methyl ethyl ketone / methanol mixed solution of Exemplified Compound a-6. Layer A1-4 was produced and the stereoscopic display device L was produced. Further, in the same manner as in Example 1, using KOBRA-21ADH (manufactured by Oji Scientific Instruments), the orientation state of the rod-like liquid crystalline compound, the direction of the slow axis, and Re and Rth were measured, respectively. The results are shown in Table 1.

  Table 1 summarizes the physical property values of the optically anisotropic layers of Examples 1 to 11 and Comparative Examples 1 and 2, and Table 2 summarizes the retardation of the members arranged on the viewer side of the polarizing film.

(Evaluation)
<Evaluation of stereoscopic display device>
About each produced stereoscopic display apparatus, the following evaluation was performed using 3D glasses attached to W220S (product made from Hyundai). As for the reference form, the VA liquid crystal display device is the stereoscopic display device H of Comparative Example 1, and the TN liquid crystal display device is the stereoscopic display device I of Comparative Example 2. The results are shown in Table 3.

(1) Measurement of frontal luminance ratio and frontal average luminance ratio 3D glasses and measuring instrument (made by BM-5A Topcon) are placed in front of a liquid crystal display device displaying a stripe image in which white and black are alternately arranged in the vertical direction. The front luminance A in white display was measured by placing a measuring instrument at a position through the glasses on which the white stripe was visible. Subsequently, a stripe image in which the positions of white and black are exchanged is displayed. Similarly, the front luminance B is measured by placing a measuring device at a position through the glasses through which the white stripe can be visually recognized. The average value of the luminance B was used as the front luminance of the stereoscopic display device.
(1-a) Front luminance ratio The front luminance ratio is a relative value of front luminance when 3D glasses and the ground are parallel, and was calculated by the following equation.
Front luminance ratio (%) of each stereoscopic display device = Front luminance of each stereoscopic display device / Front luminance of reference form (1-b) Front average luminance ratio The front average luminance ratio is the average of the front luminance when the 3D glasses are rotated. It is a relative value of the value, and was calculated by the following formula.
Front average brightness ratio of each 3D display device (%)
= Front brightness average value of each 3D display device / Front brightness average value of reference form

(2) Light resistance Light resistance test equipment (super xenon weather meter SX120 type (long life xenon lamp), manufactured by Suga Test Instruments Co., Ltd.), irradiance 100 ± 25 W / m 2 (wavelength 310 nm to 400 nm), test tank Before and after the light resistance test 25 hr was performed in accordance with JIS K 5600-7-5 under the conditions of an internal temperature of 35 ± 5 ° C., a black panel temperature of 50 ± 5 ° C., and a relative humidity of 65 ± 15%, Re of the retardation film The change of (550) was investigated. The case where the rate of change was within 10% was designated as A, and the case where it was greater than that was designated as B.

  From the said table | surface, it turns out that the comparative example 1 and the comparative example 2 which use a rod-shaped liquid crystalline compound need to expose twice the ultraviolet-ray which put the filter and made it linearly polarized light. On the other hand, in the present invention, it is clear that a desired pattern retardation film can be produced by once exposing non-polarized ultraviolet rays. From this, it is apparent that the present invention can produce a pattern retardation film having the same or higher number of steps as compared with the prior art.

DESCRIPTION OF SYMBOLS 10 Optical film 12 Pattern optical anisotropic layer 14 Orientation film 16 Transparent support 18 Polarizing film 19 Polarizing film protective film 20 Functional layer 21 Transparent film 1 Liquid crystal cell 2 Polarizing film (backlight side)
3 Polarizing film protective film (backlight side)
4 Optical compensation film 12a First retardation region 12b Second retardation region p Absorption axis

Claims (20)

A pattern comprising a transparent support, an alignment film, and at least one of in-plane slow axis direction and in-plane retardation that are different from each other and are alternately arranged in the plane. An optically anisotropic layer,
The patterned optically anisotropic layer uses a composition containing at least one compound that reacts by applying energy, and is polymerized on the pattern alignment film formed by rubbing and applying energy to a part of the region. An optical film formed by using a composition containing, as a main component, a rod-like liquid crystalline compound having a functional group. The optical film according to claim 1, wherein the energy is non-polarized ultraviolet rays. The optical film according to claim 1 or 2, wherein the rod-like liquid crystalline compound having a polymerizable group is fixed in a horizontal alignment state. The optical film of any one of Claims 1-3 whose compound which reacts by provision of energy is a photoreactive compound. The optical film according to claim 4, wherein the photoreactive compound is a photoacid generator. The optical film according to claim 4, wherein the photoreactive compound is polyvinyl cinnamate. The polarizing film according to claim 1, further comprising a polarizing film, wherein the in-plane slow axis of the first and second retardation regions and the absorption axis of the polarizing film form an angle of ± 45 °, respectively. Optical film. The optical value according to claim 7, wherein the total value of in-plane retardation Re (550) at a wavelength of 550 nm of all members including the optically anisotropic layer disposed on one surface of the polarizing film is 110 to 160 nm. the film. The optical film according to claim 1, wherein the transparent support contains an ultraviolet absorber. The optical film according to claim 1, further comprising a functional layer. The optical film of Claim 10 in which a functional layer contains a ultraviolet absorber. The 3D image display apparatus which has at least the display panel driven based on an image signal, and the optical film of any one of Claims 1-11 arrange | positioned at the visual recognition side of a display panel. The 3D image display device according to claim 12, wherein the display panel includes a liquid crystal cell. A 3D image display system comprising at least the 3D image display device according to claim 12 or 13 and a polarizing plate disposed on a viewing side of the 3D image display device, wherein a stereoscopic image is visually recognized through the polarizing plate. A pattern comprising a transparent support, an alignment film, and at least one of in-plane slow axis direction and in-plane retardation that are different from each other and are alternately arranged in the plane. An optically anisotropic layer, and a method for producing an optical film comprising:
1) Applying a composition containing at least one compound that reacts upon application of energy on a transparent support to create a film 2) Rubbing the film in one direction 3) Energizing a partial region of the film 4) Step 5) of applying a composition mainly composed of a rod-like liquid crystalline compound having a polymerizable group on the pattern alignment film obtained by rubbing and applying energy to the film. Step 6 of forming a first retardation region and a second retardation region in which at least one of in-plane slow axis direction and in-plane retardation is different from each other by heating 6) rod-like liquid crystal having a polymerizable group by applying energy The manufacturing method of an optical film including the process of fixing a compound. Including first and second orientation control regions;
The first and second alignment control regions are alternately arranged in the plane, and each include a compound that reacts by applying energy at different contents, and is a pattern alignment film. The pattern alignment film according to claim 16, wherein the first and second alignment control regions are formed by a rubbing process and a process of applying energy. The first and second alignment control regions are a method of manufacturing a pattern alignment film in which the first and second alignment control regions are alternately arranged in the plane,
1) Applying a composition containing at least one compound that reacts by applying energy on the transparent support to form a film 2) Rubbing the film in one direction 3) Applying to a partial region of the film On the other hand, the manufacturing method of the pattern orientation film including the process of providing energy. The method for producing a pattern alignment film according to claim 18, wherein the energy is one non-polarized ultraviolet irradiation. The method for producing a patterned alignment film according to claim 18 or 19, wherein the step of applying energy is a step of irradiating non-polarized light perpendicular to the film.

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