JP4933904B2 - Composite material having optical anisotropy and method for manufacturing electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite material having predetermined optical characteristics such as optical rotation property, reflection characteristics of energy rays and others without having a complicated manufacturing process, and to provide an electronic device using the composite material. <P>SOLUTION: The method for manufacturing a composite material having predetermined optical anisotropy such as optical rotation, polarization property and others includes steps of dispersing particles having predetermined optical characteristics such as optical rotation, reflection characteristics of energy rays and others in a substance having fluidity that can be solidified, applying at least either a magnetic field or an electric field to the particles to align and solidifying the substance. The electronic device uses the above composite material. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a composite material in which predetermined optical anisotropy such as optical rotation and polarization is developed by orienting particles having predetermined optical characteristics such as optical rotation and energy ray reflection characteristics. And a method of manufacturing an electronic device using such a composite material.

  As materials having anisotropy, particularly optical anisotropy, for example, conventionally known crystals as optically-rotating crystals and resins having oriented optically-rotating molecules (see, for example, Patent Documents 2 and 3) In addition, a composite material in which crystals having optical activity are oriented in a resin (see, for example, Patent Document 4) has been proposed.

In addition, as an electronic device using such a material having optical rotation, for example, an optical compensator for a liquid crystal display (see, for example, Non-Patent Document 1) has been proposed.
Japanese Patent Application No. 2004-285401 (P2004-285401) Japanese Patent Application No. 2005-97090 (P2005-97090) Japanese Patent Application No. 2003-394375 (P2003-394375) Basics and mechanism of the latest display technology well understood, written by Akihiko Nishikubo, Hidekazu System Publishing Co., Ltd., December 2003

  However, when an optical crystal such as quartz is used as a material having optical rotation, it is difficult to obtain a large crystal and it is difficult to actually use it. Moreover, since the method described in Patent Document 1 needs to be aligned in a temperature range where the polymer exhibits liquid crystallinity, it is necessary to accurately control the temperature, and it is difficult to manufacture industrially. In addition, the method described in Patent Document 2 requires molecules to be oriented in a supercritical state, and high temperature and high pressure are required for the preparation of the sample, which makes it difficult to manufacture industrially. Further, in the method described in Patent Document 3, crystals can be oriented only with respect to the stretched direction, and it is difficult to directly form the obtained optically-rotating material on a desired device. Is required separately. Therefore, there is a problem that the manufacturing cost is increased.

  On the other hand, Non-Patent Document 1 gives an example in which an optical film produced by various manufacturing methods is applied as an optical compensator, but a process of attaching the film to a glass substrate is necessary, and the manufacturing process However, the manufacturing cost is high.

  Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a predetermined optical system such as optical rotation and polarization that can freely control the direction of optical anisotropy without a complicated manufacturing process. It is an object of the present invention to provide a method of manufacturing a composite material having anisotropy and to provide an electronic device using the technique.

As a result of intensive studies to solve the above problems, the present inventors have found that fine particles having predetermined optical characteristics such as optical rotation and energy ray reflection characteristics suspended in a fluid material (see FIG. Hereinafter, the inventors have found that the “optically characteristic particles” are oriented in a desired direction using at least one of a magnetic field and an electric field, and have completed the present invention. Furthermore, by aligning the fine particles dispersed in the film formed between the loop-shaped supports in a desired direction using at least one of a magnetic field and an electric field, the optical rotation and polarization of nano-level thinness can be achieved. It was discovered that a film having a predetermined optical anisotropy at the beginning could be produced, and the present invention was completed.
Furthermore, when these fine particles are magnetically oriented, it has been found that the electronic device can be aligned at the same time, and the present invention has been completed.

  One embodiment of the method for producing a composite material having predetermined optical anisotropy including the optical rotation and polarization characteristics of the present invention (hereinafter referred to as “optically anisotropic composite material”) is solidified fluidity. An optical characteristic particle having anisotropy in magnetic susceptibility and / or dielectric constant dispersed in a substance having an optical characteristic particle in a direction in which the magnetic field or the electric field is most easily aligned using at least one of a static magnetic field and an electrostatic field (See FIG. 1), and then solidifying a material having fluidity to give predetermined optical anisotropy such as optical rotation and polarization to the solidified composite material .

  According to another embodiment of the method for producing an optically anisotropic composite material of the present invention, optically characteristic particles having anisotropy in magnetic susceptibility and / or dielectric constant dispersed in a substance having fluidity that can be solidified are obtained. By using at least one of a rotating magnetic field and a rotating electric field, the particles are oriented in the direction in which the magnetic field or electric field is most difficult to be oriented in the direction of the rotation axis (see FIG. 2), and then the material having fluidity is solidified. It is characterized by imparting predetermined optical anisotropy including optical rotation and polarization characteristics to the later composite material.

  In another embodiment of the method for producing an optically anisotropic composite material of the present invention, there is provided an optical characteristic particle having anisotropy in magnetic susceptibility and / or dielectric constant dispersed in a solidified fluid material. In the case of using at least one of a rotating magnetic field and a rotating electric field, the rotation speed is fast at 1/4 rotation out of one rotation, slow at the next 1/4 rotation, fast at the next 1/4 rotation, By using a magnetic field and / or an electric field whose rotation speed periodically varies so as to be continuously slowed by four rotations, the particles are oriented in the direction that is most difficult to orient the magnetic field or electric field that is the direction of the rotation axis. , By rotating the particles in the direction in which rotation is slowest, the direction in which they are most likely to be aligned in a magnetic field or electric field (see FIG. 3), and then solidifying the flowable substance, Places including characteristics It is characterized by imparting a constant optical anisotropy.

  In another embodiment of the method for producing an optically anisotropic composite material of the present invention, optically characteristic particles having anisotropy in magnetic susceptibility and / or dielectric constant dispersed in a solidifiable fluid substance are rotated. By using the magnetic field and / or the rotating electric field, the particles are oriented in the direction of the rotation axis that is most difficult to orient the magnetic field, and the rotation axis before the orientation by the rotating magnetic field and / or the rotating electric field is not relaxed. By applying a static magnetic field and / or electrostatic field from a direction perpendicular to the axis, the axis of the optical characteristic particle that is most difficult to orient in the magnetic field is oriented in the direction of the rotation axis, and the axis that is most easily oriented to the magnetic field or electric field is oriented in the static magnetic field or By aligning the electrostatic field in the applied direction and then solidifying the material with fluidity, the cured composite material has a predetermined optical property such as optical rotation and polarization. Characterized in that it imparts isotropic.

  Here, magnetic anisotropy means that there is anisotropy in a substance with respect to magnetization excited by an external magnetic field, and torque is generated by magnetic interaction in the magnetic field, resulting in more energy. Rotates in a stable direction. The same applies to dielectric anisotropy. Dielectric anisotropy refers to anisotropy in a substance with respect to polarization excited by an external electric field. Generates torque and rotates in a more energetically stable direction. In this case, the substance having anisotropy in the molecular structure also has anisotropy both magnetically and electrically. For example, in the fiber made by stretching, the molecular chain is aligned in the stretching direction. The magnetic susceptibility and dielectric constant differ between (//) and the direction perpendicular to it (垂直). In other words, a substance having magnetic anisotropy and dielectric anisotropy has anisotropy in the electronic state in the substance, and in the case of the fiber as described above, molecules are aligned in the stretched direction, and the bond is made through the bond. Anisotropy occurs in the electron distribution.

  In addition, substances having anisotropy in the crystal structure also have anisotropy in the electronic state, and therefore are oriented in a magnetic field and an electric field. Further, even when there is no magnetic and electrical anisotropy, the material is oriented if it has anisotropy. In the present invention, such a substance is also defined as a substance (member, material) having anisotropy. In addition, laminar compounds such as clay and graphite can be exemplified as substances having large magnetic and dielectric anisotropy, and a member is driven in an arbitrary direction by applying an appropriate magnetic field or electric field. Can do. In addition, a composite material in which an organic substance is intercalated between transparent clay layered compounds can also be oriented in a direction corresponding to the magnetic susceptibility and dielectric anisotropy in consideration of the anisotropy of the organic substance after the composite.

  Other embodiments of the method for producing an optically anisotropic composite material of the present invention include a method using an electromagnet as a means for changing the strength and application direction of a magnetic field with respect to a material having anisotropy in magnetic susceptibility, for example. . In this case, the strength of the magnetic field can be changed by changing the amount of current applied to the electromagnet, changing the position of the electromagnet with respect to a material having anisotropy in magnetic susceptibility, or changing the strength of the magnetic field generated by multiple electromagnets. And the application direction can be changed.

  According to another embodiment of the method for producing an optically anisotropic composite material of the present invention, a voltage is applied between two conductors as a means for changing the strength and application direction of an electric field for a material having dielectric anisotropy. There is a way. In this case, a semiconductor and a transparent electrode material other than various metals can be used for the electrode. In particular, when used in a display device, it is preferable to use a transparent electrode. In this case, the electric field strength can be changed by changing the voltage applied to the electrode, changing the position of the electrode relative to the material with dielectric anisotropy, or changing the strength of the electric field generated by multiple electrodes. And the application direction can be changed.

  As described above, an optically anisotropic composite material having predetermined optical anisotropy such as optical rotation and polarization characteristics is obtained by performing the above-described various orientations in a flowable substance that can be solidified and then curing. Can be manufactured.

  Any solidifiable fluid substance of the present invention can be used. Examples thereof include liquids and fluid powders, and a solidification method suitable for the form is selected. In the case of powder, a type that solidifies by pressure bonding or baking can be used, and the liquid can be solidified by cooling and solidifying the molten solid, or by evaporating the solvent of the solution in which the solid is dissolved, epoxy resin, acrylic resin, etc. It is possible to use a resin having the reactivity of In addition to the fluid material exemplified herein, any material that can be solidified is applicable.

  Another embodiment of the method for producing an optically anisotropic composite material of the present invention is characterized in that the fluid substance is an energy beam curable resin. In this case, examples of energy rays include particle rays such as alpha rays, proton rays, and neutron rays, electron rays such as beta rays, electromagnetic waves such as gamma rays, X rays, and ultraviolet rays.

  In another embodiment of the method for producing an optically anisotropic composite material of the present invention, the magnetic anisotropy, the dielectric anisotropy, or the magnitude thereof is small, so that the thermal magnetic field is overcome and the real magnetic field is overcome. And / or by attaching a substance having anisotropy to a particle that cannot be oriented by an electric field, thereby enabling orientation by a magnetic field and / or an electric field.

  In another embodiment of the method for producing an optically anisotropic composite material of the present invention, the particles that cannot be substantially oriented are metallic nanoparticles, and the magnetic susceptibility and / or dielectric of the protective molecules oriented and attached to the surface of the nanoparticles. It is characterized by being oriented by a magnetic field and / or an electric field by anisotropy of the rate.

  Another embodiment of the method for producing an optically anisotropic composite material of the present invention is to apply a solidifiable liquid film containing optically characteristic particles between supports on a loop and to solidify the film before solidifying the film. In addition, by applying at least one of an electric field and orienting the optical characteristic particles, an ultrathin material having a predetermined optical anisotropy including optical rotation and polarization is manufactured. In addition, when a coating film is formed on a substrate and the optical characteristic particles in the coating film are oriented, the orientation may be hindered by the interaction between the substrate and the optical characteristic particles. When carried out in a membrane stretched between, such inhibition is reduced.

  Another embodiment of the method for producing an optically anisotropic composite material of the present invention is to apply a solidifiable liquid film containing optically characteristic particles between supports on a loop and to solidify the film before solidifying the film. Among the methods for producing an ultrathin material having predetermined optical anisotropy such as optical rotation and polarization by applying at least one of an electric field and orienting the optical property particles, the optical property particles Is a type that is oriented by anisotropy of magnetic susceptibility and / or dielectric constant that is oriented and adhered to the surface of the optical characteristic particle. In particular, when the optical property particles have conductivity, the obtained film can be used as an anisotropic conductive material, an anisotropic heat conductive material, and an anisotropic optical material.

  In another embodiment of the method for producing an optically anisotropic composite material of the present invention, a flowable material in which optically characteristic particles are dispersed is directly applied on a transparent substrate, and then at least one of a magnetic field and an electric field is applied, The optical characteristic particles are oriented and then solidified to directly form a layer having predetermined optical anisotropy including optical rotation and polarization on a transparent substrate.

  Of the optical property particles of the present invention, the optically-rotating particles have refractive index anisotropy, but exhibit a refractive index close to the refractive index of the most solidified fluid substance among the two or more refractive indexes of the particles. Light scattering can be reduced by orienting the axial direction in the direction in which light enters during use.

  Among the materials having optical activity of the present invention, other embodiments of the method for producing a composite material having optical activity are such that the smallest value of the anisotropic refractive index of the particles having optical activity is 1.65 or less in the visible light region. There is a feature that light scattering is reduced by having a refractive index close to that of the resin in which particles are dispersed.

  In another embodiment of the method for producing a composite material having optical activity of the present invention, the particles having optical activity are any one of calcium carbonate, strontium carbonate, cobalt carbonate, barium carbonate, manganese carbonate, and magnesium carbonate. It is characterized by being.

  In another embodiment of the method for producing an optically anisotropic composite material according to the present invention, the particles that cannot be substantially oriented are metallic nanoparticles, and the magnetic susceptibility and / or dielectric constant of the protective molecules oriented and attached to the surface of the nanoparticles are measured. It is characterized in that it is oriented by at least one of a magnetic field and an electric field depending on anisotropy, and the metal particles are plate-shaped and exhibit a light reflection type polarization property.

  An embodiment of the method for manufacturing an electronic device of the present invention is characterized by using an optically anisotropic composite material manufactured by the various methods described above.

  Another embodiment of the method for manufacturing an electronic device according to the present invention is characterized in that when the optical property particles are magnetically oriented, the electronic devices are aligned with each other or at the time of assembling the electronic device and the member.

  In another embodiment of the method for manufacturing an electronic device according to the present invention, a ferromagnetic pattern is formed on a substrate as the electronic device, and alignment of the electronic device is performed using magnetic field lines concentrated along this pattern. It is characterized by performing.

  As described above, according to the present invention, an optically anisotropic composite material can be simply provided by aligning optical characteristic particles in an arbitrary direction without having a complicated manufacturing process. In addition, by directly forming the optically anisotropic composite material of the present invention on a transparent substrate, it is possible to easily form an optical compensation film for a liquid crystal display, and the position of an electronic device when using magnetic field orientation. Matching can be achieved simultaneously.

  Embodiments relating to a method for producing an optically anisotropic composite material will be described below with reference to the drawings. The present invention relates to an optically anisotropic composite material by orienting optically characteristic particles having anisotropy in magnetic susceptibility and / or dielectric constant in a solidifiable fluid substance using at least one of an electric field and a magnetic field. And an electronic device manufacturing method using the optically anisotropic composite material.

Here, the magnetic field (magnetic field) H (unit: AT / m = ampere-turns / meter) referred to in the present invention refers to a vortex field generated by the movement of electric charges and exerts a force on the movement of electric charges. The strength of the magnetic field is expressed by magnetic flux density B (unit: T = Tesla), which is obtained by dividing the number of magnetic flux lines (unit: Wb = Weber) penetrating through the area S (m ² ) perpendicular to the magnetic field by the area. is there.
Formula 1 B = Ф / S (Wb / m ² = T)

Such a magnetic field can be generated by passing an electric current as in an electromagnet, or can be generated by aligning the direction of the magnetic moment of an electron spin possessed by a substance as in a permanent magnet. Further, the magnetic flux density B and the magnetic field H can be expressed by the following relational expression in a vacuum.
Formula 2 B = μ ₀ H

Here, μ ₀ is the permeability of vacuum, rational unit is 4π × 10 ⁻⁷ (Henry / meter = H / m), non-rational unit is 1 (anonymous number), and magnetic flux density B and magnetic field strength H are It is a coefficient to tie. Further, a _value obtained by dividing the ratio μ between the magnetic flux density B and the magnetic field strength H when a substance is placed in a magnetic field by μ ₀ is called magnetic permeability K (Henry / meter = H / m).
Formula 3 K = μ / μ ₀

The strength of the interaction of the substance by the magnetic field is indicated by the magnetic susceptibility χ, and the larger the absolute value, the stronger the magnetic field is induced in the substance, causing a strong magnetic interaction with the induced magnetic field. And the above-mentioned magnetic permeability K is a non-rational unit and the following relational expression holds.
Equation 4 K = 1 + χ

  Here, since the optically anisotropic particles have anisotropy in magnetic susceptibility and dielectric constant, they can be oriented by a magnetic field or an electric field.

  The interaction between the magnetic field and the substance is determined by the strength of the magnetic field and the absolute value of the magnetic susceptibility χ, and the force to align the axis where the magnetic field is strong and the absolute value of the magnetic susceptibility χ is large is parallel to the magnetic field. The actual direction (magnetization easy axis) is determined by the balance of the three-axis magnetic anisotropy of the crystal.

Also, magnetic anisotropy means that there is anisotropy in a substance with respect to magnetization excited by an external magnetic field. In the magnetic field, torque is generated by magnetic interaction, and in a more stable direction. Rotate. Substances that have anisotropy in the molecular structure also have magnetic anisotropy. For example, in a fiber made by drawing, molecular chains are aligned in the drawing direction, so the fiber direction (//) and perpendicular to it The magnetic susceptibility differs in the direction (率). When the fiber exhibits diamagnetism, the difference is called diamagnetic anisotropic magnetic susceptibility (χ _a ), and is represented by the difference in magnetic susceptibility with respect to an arbitrary axis.
χ _a = χ _// −χ _⊥

When a diamagnetic material having such magnetic anisotropy is placed in a magnetic field of strength B, the material acquires magnetic energy E.

Here, μ ₀ is the vacuum permeability, V is the volume of the object, θ is the angle between the magnetic field and the fiber axis direction, and B is the external magnetic field strength.
When χ _a > 0, the magnetic energy becomes smaller and more stable when the fiber axis direction is parallel to the magnetic field. As a result, it is oriented parallel to the magnetic field.

Such a uniaxially oriented fiber can be described as described above. On the other hand, for substances having different magnetic anisotropy between two or more axes, the direction in which the substance is oriented with respect to the external magnetic field is determined from the values of the magnetic anisotropy of the two or more axes.
It can also be seen from the above formula that when the external magnetic field is large and when the volume is large, the magnetic energy is received more strongly.

  Some substances having magnetic anisotropy have anisotropy in the electronic state in the substance. In the case of the fibers described above, anisotropy occurs in the flow of electrons through the bonds by arranging the molecules in the stretched direction. A substance having anisotropy in the crystal structure is also oriented in the magnetic field. On the other hand, even when there is no magnetic anisotropy, it is oriented when the material has anisotropy.

A layered compound such as clay can also be exemplified as a substance having a large magnetic anisotropy, and crystals can be directed in an arbitrary direction by applying an appropriate magnetic field. Composite materials obtained by intercalating organic substances into such clay layered compounds can be used as well. When organic substances are oriented and inserted between layers, the orientation direction is controlled by the magnetic anisotropy derived from the oriented organic substances. It is also possible to do. Therefore, it can be used to orient the composite material of clay layered compound and organic matter in any direction, and the predetermined optical properties such as optical rotation and polarization ability of organic matter oriented and inserted between clay layers Anisotropy can be preferably used.
When a magnetic field is applied to such a substance, it is oriented in a magnetically stable direction. For example, when a magnetic field that rotates uniaxially is applied to a material having magnetic anisotropy, the hard axis of magnetization of the substance with respect to the rotation axis is the magnetic field. Oriented parallel to the rotation axis. Further, as described above, the magnetic field applied to the substance having magnetic anisotropy can be a time-varying magnetic field including a rotating magnetic field.

  The behavior of a material having magnetic anisotropy in a magnetic field has been described above, but the behavior of a material having dielectric anisotropy in an electric field can also be explained by the same principle, and these magnetic and electrical anisotropies can be explained. The optically characteristic particles having a property can be oriented in at least one of a magnetic field and an electric field in a fluid material.

  Here, the optical rotation referred to in the present invention is the ability of a substance to rotate the polarization plane of polarized electromagnetic waves.

(Orientation method using at least one of a magnetic field and an electric field in a solidified fluid material)
Among substances having fluidity that can be solidified, a substance having a predetermined optical characteristic such as optical rotation and energy ray reflection characteristic having magnetic and / or dielectric anisotropy is selected from at least one of a magnetic field and an electric field. In the case of orientation, it is necessary to overcome random rotational motion derived from thermal energy and viscous resistance. In order to orient a substance having a small magnetic and / or dielectric anisotropy, it is advantageous to use a strong magnetic field and / or electric field, and the process can be completed in a short time by using a low-viscosity fluid. You can also.

  In particular, the fluid substance is preferably a liquid, and the lower the viscosity of the liquid, the smaller the viscous resistance to orientation using one or both of a magnetic field and an electric field. As a result, the orientation by the magnetic field and / or electric field becomes smoother. It can be said that it is more preferable. Besides this, it can be applied to fluid powder and gas, and is not restricted by the type of substance.

  As this fluid substance, a curable organic component and an inorganic component can be appropriately used. Among these, as an organic component, in addition to various epoxy compounds, siloxane compounds, etc., prepolymers such as curable monomers and oligomers can be used, and these can be melted in a polymer state or dissolved in a solvent. Or a fine powder with fluidity can be used. Of these, thermoplastic resins include prepolymers and polymers composed of vinyl acetate, vinyl alcohol, vinyl butyral, vinyl chloride, methacrylate, acrylic acid, methacrylic acid, styrene, ethylene, amide, cellulose, isobutylene, vinyl ether, and the like. be able to. Examples of the thermosetting resin include prepolymers and polymers made of urea, melamine, phenol, resorcinol, epoxy, episulfide, isocyanate, imide and the like. These compounds can be used alone or in combination of two or more.

  When blending such a curable prepolymer into a fluid substance, a curing agent or a polymerization initiator for curing the prepolymer can be blended as necessary. The kind of these hardening | curing agents and a polymerization initiator can be suitably selected according to the kind of prepolymer to mix | blend. As such a curing agent and polymerization initiator, a compound that initiates a reaction by energy rays can be preferably used. For example, photo radical polymerization type resin of acrylic monomer / oligomer, photo Michael addition type resin of polyene-thiol curing system, photo cationic polymerization type resin of epoxy, oxetane and vinyl ether monomer / oligomer can be exemplified. Moreover, various well-known photoreaction sensitizers can also be used for these formulations.

  Of the exemplified solidifying fluidity materials, prepolymers with polysynthesis have a small volume variation after curing and have a predetermined optical anisotropy directly on the device, including optical rotation and polarization. When forming a composite material, it is preferable because stress derived from strain at the time of solidification can be reduced. Among these, a photocurable resin can be preferably used for forming a composite material having predetermined optical anisotropy including optical rotation and polarization on a transparent substrate. In addition, by reducing the viscosity of the photocurable resin prepolymer, the orientation speed of particles having predetermined optical characteristics such as optical rotation and energy ray reflection characteristics can be improved, and the orientation rate can be improved. It can be said that it is more preferable.

  Examples of the active energy ray for initiating the reaction include ultraviolet rays and electron beams, but are not particularly limited thereto. Moreover, when irradiating an active energy ray, it is not limited to the atmosphere, It can irradiate in various atmospheres and temperature environments, such as air | atmosphere, inert gas, such as nitrogen and argon, and a vacuum. Moreover, in order to improve the applicability | paintability with respect to a transparent substrate, it can also dilute with various solvents and can also adjust viscosity.

  Examples of inorganic components that can be used include various metal alkoxides, various metal chlorides, water glass, colloidal silica, various silicon oxides, silicon nitride, silicon fluoride, metal oxide, metal nitride, metal silicide, metal A solution of phosphate can be used, or a fine powder with fluidity can be used.

  Such a fluid substance containing an inorganic component can be solidified by using a sol-gel reaction or high-temperature baking. In this case, a sol-gel reaction catalyst may also be added to the fluid substance. it can.

  As a catalyst for the sol-gel reaction, an inorganic component is hydrolyzed and polycondensed; an acid such as hydrochloric acid; an alkali such as sodium hydroxide; an amine; or dibutyltin diacetate, dibutyltin dioctate, dibutyltin dilaurate, Organotin compounds such as dibutyltin dimaleate, dioctyltin dilaurate, dioctyltin dimaleate, tin octylate; isopropyl triisostearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, bis (dioctyl pyrophosphate) oxyacetate titanate, tetraalkyl titanate Organic titanate compounds such as: tetrabutyl zirconate, tetrakis (acetylacetonate) zirconium, tetraisobutyl zirconate, butoxytris ( Cetylacetonate) Zirconium, zirconium naphthenate, and other organic zirconium compounds; Tris (ethyl acetoacetate) aluminum, tris (acetylacetonato) aluminum, and other organic aluminum compounds; Zinc naphthenate, cobalt naphthenate, cobalt octylate A metal catalyst etc. can be mentioned. Among these, a dibutyltin compound (SCAT-24 manufactured by Sansha Machinery Chemical Co., Ltd.) can be specifically mentioned as a commercial product. These compounds can be used alone or in combination of two or more. These organic components and inorganic components can be used as needed alone or in combination of organic and inorganic as appropriate.

  For the fluid substance that can be used in the present invention, a solvent can be appropriately selected according to the blending components, if necessary. Specific examples of such solvents include hydrocarbons (propane, n-butane, n-pentane, isohexane, cyclohexane, n-octane, isooctane, benzene, toluene, xylene, ethylbenzene, amylbenzene, turpentine oil, pinene, and the like). , Halogenated hydrocarbons (methyl chloride, chloroform, carbon tetrachloride, ethylene chloride, methyl bromide, ethyl bromide, chlorobenzene, chlorobromomethane, bromobenzene, fluorodichloromethane, dichlorodifluoromethane, difluorochloroethane, etc.), alcohol (methanol , Ethanol, n-propanol, isopropanol, n-amyl alcohol, isoamyl alcohol, n-hexanol, n-heptanol, 2-octanol, n-dodecanol, nonanol, cyclohexa Ether, acetal (ethyl ether, dichloroethyl ether, isopropyl ether, n-butyl ether, diisoamyl ether, methylphenyl ether, ethylbenzyl ether, furan, furfural, 2-methylfuran, cineol, methylal) , Ketone (acetone, methyl ethyl ketone, methyl-n-propyl ketone, methyl-n-amyl ketone, diisobutyl ketone, phorone, isophorone, cyclohexanone, acetophenone, etc.), ester (methyl formate, ethyl formate, propyl formate, methyl acetate, ethyl acetate, Propyl acetate, acetic acid-n-amyl, methyl cyclohexyl acetate, methyl butyrate, ethyl butyrate, propyl butyrate, butyl stearate), polyhydric alcohols and their derivatives Glycol, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether, methoxymethoxyethanol, ethylene glycol monoacetate, diethylene glycol, diethylene glycol monomethyl ether, propylene glycol, propylene glycol monoethyl ether), fatty acids and phenols ( Formic acid, acetic acid, acetic anhydride, propionic acid, propionic anhydride, butyric acid, isovaleric acid, phenol, cresol, o-cresol, xylenol, etc., nitrogen compounds (nitromethane, nitroethane, 1-nitropropane, nitrobenzene, monomethylamine, dimethyl) Amine, trimethylamine, monoethylamine, diamylamine, aniline, monomethyl Aniline, o-toluidine, o-chloroaniline, dichloroamine, dicyclohexylamine, monoethanolamine, formamide, N, N-dimethylformamide, acetamide, acetonitrile, pyridine, α-picoline, 2,4-lutidine, quinoline, morpholine Etc.), sulfur, phosphorus, other compounds (carbon disulfide, dimethyl sulfoxide, 4,4-diethyl-1,2-dithiolane, dimethyl sulfide, dimethyl disulfide, methanethiol, propane sultone, triethyl phosphate, tophenyl phosphate, carbonic acid Diethyl, ethylene carbonate, amyl borate, etc.), inorganic solvents (liquid ammonia, silicone oil, etc.), water and the like.

  In the liquid used in the present invention, a stabilizer, a coupling agent and the like can be appropriately selected and blended as necessary. Specific examples of such stabilizers include 2,6-di-tert-butyl-phenol, 2,4-di-tert-butyl-phenol, 2,6-di-tert-butyl-4-ethyl- Phenol-based antioxidants exemplified by phenol, 2,4-bis- (n-octylthio) -6- (4-hydroxy-3,5-di-tert-butyl-anilino) -1,3,5-triazine and the like Agent, alkyldiphenylamine, N, N'-diphenyl-p-phenylenediamine, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, N-phenyl-N'-isopropyl-p-phenylenediamine, etc. Aromatic amine antioxidants exemplified by: dilauryl-3, 3'-thiodipropionate, ditridecyl-3, 3'-thiodipropionate, bis [2-methyl Sulfide hydroperoxide decomposer exemplified by -4- {3-n-alkylthiopropionyloxy} -5-tert-butyl-phenyl] sulfide, 2-mercapto-5-methyl-benzimidazole, and the like, tris (isodecyl) phos Phyto, phenyl diisooctyl phosphite, diphenyl isooctyl phosphite, di (nonylphenyl) pentaerythritol diphosphite, 3,5-di-tert-butyl-4-hydroxy-benzyl phosphate diethyl ester, sodium bis (4 -Tert-butylphenyl) phosphate, etc., a phosphorus hydroperoxide decomposing agent, a phenyl salicylate, a salicylate light stabilizer exemplified by 4-tert-octylphenyl salicylate, and the like, 2,4-dihydroxy Benzophenone light stabilizers exemplified by cibenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2N-benzotriazol-2-yl) phenol] and the like, benzotriazole-based light stabilizer, phenyl-4-piperidinyl Hindered amine light stabilizers exemplified by carbonate, bis- [2,2,6,6-tetramethyl-4-piperidinyl] sebacate and the like, [2,2′-thio-bis (4-t-octylpheno) Lat)]-2-ethylhexylamine-nickel- (II) Over preparative based light stabilizers, and the like oxalic acid anilide-based light stabilizer. Moreover, as such a coupling agent, specifically, ((tridecafluoro-1,1,2,2-tetrahydrooctyl) triethoxysilane, epoxy-modified silane coupling, as a fluorine-based silane coupling agent, As an agent (KBM-403 manufactured by Shin-Etsu Chemical Co., Ltd.), As an oxetane-modified silane coupling agent (TESOX manufactured by Toagosei Co., Ltd.), or vinyltrimethoxysilane, vinyltriethoxysilane, γ-chloropropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N- (β-aminoethyl) -γ-aminopropyltrimethoxysilane, N- (β-aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-glycidoxypropyltrimethoxy Silane, β-glycidoxypropylmethyldi Silane coupling agents such as toxisilane γ-methacryloxyxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-mercaptopropyltrimethoxysilane, triethanolamine titanate, titanium acetylacetonate, titanium ethylacetoacetate , Titanium lactate, titanium lactate ammonium salt, tetrastearyl titanate, isopropyl tricumyl phenyl titanate, isopropyl tri (N-aminoethyl-aminoethyl) titanate, dicumylphenyloxyacetate titanate, isopropyl trioctainol titanate, isopropyl dimethacrylisostearoyl Titanate, titanium lactate ethyl ester, octylene glycol tita Nitrate, isopropyl triisostearoyl titanate, triisostearyl isopropyl titanate, isopropyl tridodecylbenzenesulfonyl titanate, tetra (2-ethylhexyl) titanate, butyl titanate dimer, isopropyl isostearoyl diacryl titanate, isopropyl tri (dioctyl phosphate) titanate, isopropyl tris (Dioctyl pyrophosphate) titanate, tetraisopropyl bis (dioctyl phosphite) titanate, tetraoctyl bis (ditridecyl phosphite) titanate, tetra (2,2-diallyloxymethyl-1-butyl) bis (di-tridecyl) phosphite Titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (di Chi le pyrophosphate) ethylene titanate, tetra -i- propyl titanate, tetra -n- butyl titanate, and titanium-based coupling agents such as diisostearoyl ethylene titanate. These compounds can be used alone or in combination of two or more.

  Various additives can be dissolved in order to prevent particles having predetermined optical characteristics such as optical rotation and energy ray reflection characteristics from floating or settling in these liquids. Specifically, various halogen-containing compounds can be used for organic substances, and sucrose and sodium polytungstate can be used for water.

  Here, in order to prevent particles having predetermined optical characteristics such as optical rotation and energy rays from floating or settling in the liquid, it is most preferable to match the specific gravity of the liquid and the particles. Preferably, at least the specific gravity ratio between the liquid and the particles is preferably in the range of 0.5 to 2.

  In addition, various thixotropic agents can be added to prevent floating and settling. Specifically, inorganic particles such as silica and talc, organic particles such as acrylic and polycarbonate, and various colloids such as silica sol are preferably used. More preferably, the clay can be lowered by applying an electric field. Quantitatively speaking, it is preferable that the fluid has a thixo ratio of 1.5 or more.

  As the optically rotatory substance dispersed in such a solidifiable fluid substance, an approximately transparent material can be used in an anisotropic use region, such as organic crystals such as triclinic lysozyme, strontium carbonate, quartz Inorganic crystals such as, stretched polymers having optical activity, and the like can be used.

  These optically-rotating substances have a birefringence, but when orienting in a solidifiable flowable substance, the direction of the axis having the refractive index closest to the refractive index after solidification of the solidifiable flowable substance is determined. By aligning in the direction in which light enters during use, optical loss due to light scattering can be prevented.

  In the case where particles having optical activity are dispersed in the resin, those having the smallest anisotropic refractive index of 1.65 or less are preferable from the viewpoint of matching the refractive index with the resin.

  Among such substances having a low refractive index, examples of the substance having a large refractive index anisotropy and a large optical rotation include calcium carbonate, strontium carbonate, cobalt carbonate, manganese carbonate, and magnesium carbonate.

  Such particles can be of any size, but if the refractive index is significantly different from that of the fluidized substance after solidification and the light scattering is strong, use particles with a size sufficiently smaller than the wavelength of the light. Preferably, it is 100 nm or less, preferably 20 nm or less.

  Such very small particles have a small magnetic and electrical energy, and thus may be unable to be oriented by overcoming the thermal disturbance. Similarly, when a substance having a small magnetic susceptibility or dielectric anisotropy is used, orientation becomes difficult. It is possible to enhance the magnetic and electrical energy to the size necessary for orientation by adsorbing and orienting substances having anisotropy in magnetic susceptibility and dielectric constant on the surface of such particles. Can employ a method of adsorbing and orienting molecules or polymers having anisotropy of magnetic susceptibility or dielectric constant on the surface of the particles. As such a molecule, a molecule having a chemical structure that is easily adsorbed on the surface of the particle can be preferably used. Specific examples of such a chemical structure include an amino group, an imino group, an amide group, a hydroxy group, A carboxyl group, a silanol group, a thiol group, etc. can be illustrated.

  Specific examples of such very small particles and adsorbents that enhance magnetic and electrical energy include metal nanoparticles and nanoparticle coating protective molecules. Among the nanoparticles, nano-sized metal particles having anisotropy, such as rods, disks, and coils, impart optical anisotropy to the composite material.

(Manufacturing method of ultrathin film having predetermined optical anisotropy including optical rotation and polarization of the present invention)
In FIG. 4, using a solidifiable liquid in which optical characteristic particles are dispersed, a film is stretched between loop-shaped supports, then oriented in a magnetic field or electric field, and then cured to achieve optical rotation and polarization. One embodiment of a method for manufacturing an ultrathin film having a predetermined optical anisotropy is shown. When the membrane is stretched between ring-shaped supports and allowed to stand, the membrane becomes thinner and thinner from the top of the ring due to the effect of gravity, and a very thin film with a level of several tens to several hundreds of nm can be easily obtained.

  In this embodiment, a ring is immersed in a photocurable resin in which optical property particles are dispersed, and a resin film is formed between the rings, then a magnetic field is applied, and then photocuring is performed, whereby optical rotation or An extremely thin ultrathin film having predetermined optical anisotropy including polarization was produced.

(Method for performing alignment of the electronic device of the present invention simultaneously with magnetic field orientation)
FIG. 5 shows one embodiment of a method for simultaneously aligning electronic devices when magnetically orienting optically characteristic particles dispersed in a solidified fluid material. An electronic device having a weak magnetic substrate on which a ferromagnetic pattern is formed is placed on the electronic device on which the same pattern is formed, and then a magnetic field is applied, thereby attracting the ferromagnetic device. Due to the nature of the magnetic field lines, the magnetic force acts in the direction in which the ferromagnetic patterns overlap, and as a result, the ferromagnetic patterns overlap. By applying or filling a substance having a solidifiable fluidity in which optical characteristic particles are dispersed between or near the surface of the electronic device, it is possible to manufacture an optically anisotropic composite material using a magnetic field and Registration can be achieved simultaneously.

  In this embodiment, a semiconductor chip having an electrode made of a ferromagnetic material is used, and when the optically anisotropic composite material is formed between the semiconductor chips, the alignment of the semiconductor chip is simultaneously performed.

  Below, the Example using the manufacturing method of the optically anisotropic composite material of this invention is described.

Example 1 shows an example of a method for manufacturing a composite material having an optical rotation ability using a magnetic field among the methods for manufacturing an optically anisotropic composite material of the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed 10 % of strontium carbonate crystals (purity 99%) in a photocurable resin (manufactured by Kyoritsu Chemical Industry Co., Ltd .; W / R No. XFL-06L) in an automatic mortar After the dispersion, the mixture was further dispersed with an ultrasonic homogenizer for 1 hour. The particle diameter of strontium carbonate after dispersion is about 2 μm.

Filling / Coating The above dispersion was sandwiched between two glass plates with a gap of 100 μm.

Application of magnetic field A 2T magnetic field was applied for 5 minutes using an electromagnet so that the lines of magnetic force were applied vertically to the glass plate.

After applying the liquid curing magnetic field, the resin was cured by irradiating UV with 6000 mJ / cm ² (365 nm) while applying the magnetic field as it was, and the application of the magnetic field was stopped.

Confirmation of Orientation State When the above cured product was observed with a crossed Nicol polarizing microscope, it was confirmed that the strontium carbonate particles were aligned along the magnetic field application direction and developed optical rotation as shown in FIG. It was. The solid line arrow in FIG. 6 indicates the direction of the polarizer, and the broken line arrow indicates the direction of application of the magnetic field.

Example 2 shows an example of a method for producing a composite material having optical rotation ability using a magnetic field of the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed 10 % of strontium carbonate crystals (purity 99%) in a photocurable resin (manufactured by Kyoritsu Chemical Industry Co., Ltd .; W / R No. XFL-06L) in an automatic mortar After the dispersion, the mixture was further dispersed with an ultrasonic homogenizer for 1 hour. The particle diameter of strontium carbonate after dispersion is about 2 μm.

Filling / Coating The above dispersion was sandwiched between two glass plates with a gap of 100 μm.

Application of magnetic field The sample was rotated at a constant speed (2 r / m) while applying a 2T magnetic field using an electromagnet so that the magnetic field lines were applied vertically to the glass plate.

After applying a liquid curing rotating magnetic field, UV was irradiated at 6000 mJ / cm ² (365 nm) while applying the magnetic field as it was to cure the resin, and the application of the magnetic field was stopped.

Confirmation of orientation state When the cured product was observed with a crossed Nicol polarizing microscope, as shown in FIG. 7, it was confirmed that the strontium carbonate particles were oriented along the rotation direction of the magnetic field and the optical rotation was developed. did it. A solid line arrow indicates the direction of the polarizer, and a broken line arrow indicates the rotation axis of the magnetic field.

Example 3 shows an example of a method for producing a composite material having optical rotation ability using a magnetic field of the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed 10 % of strontium carbonate crystals (purity 99%) in a photocurable resin (manufactured by Kyoritsu Chemical Industry Co., Ltd .; W / R No. XFL-06L) in an automatic mortar After the dispersion, the mixture was further dispersed with an ultrasonic homogenizer for 1 hour. The particle diameter of strontium carbonate after dispersion is about 2 μm.

Filling / Coating The above dispersion was sandwiched between two glass plates with a gap of 100 μm.

Application of magnetic field The sample was rotated periodically and continuously while applying a 2T magnetic field using an electromagnet so that the magnetic field lines were applied vertically to the glass plate. Specifically, the 1/4 turn was rotated at 0.5 r / m, the 1/4 turn at 1 r / m, the 1/4 turn at 0.5 r / m, and the 1/4 turn at 1 r / m. .

Liquid curing period After applying a magnetic field rotated continuously and continuously, the resin is cured by irradiating UV at 6000 mJ / cm ² (365 nm) while applying the magnetic field as it is, and applying the magnetic field Stopped.

Confirmation of Orientation State When the above cured product was observed with a crossed Nicol polarizing microscope, as shown in FIG. 8, the strontium carbonate particles were oriented along the rotational speed direction in which the magnetic field was slow, and optical rotation was exhibited. I was able to confirm. The solid line arrow indicates the direction of the polarizer, and the broken line arrow indicates the direction of rotation in which the speed change rotation becomes slow.

Example 4 shows an example of a method for producing an ultrathin film showing optical rotation according to the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed 5 % of strontium carbonate crystals (purity 99%) are dispersed in a photocurable resin (Kyoritsu Chemical Industry Co., Ltd .; W / R No. 7710) with an automatic mortar. After that, the mixture was further dispersed for 24 hours with an ultrasonic homogenizer. The particle diameter of strontium carbonate after dispersion is about 0.1 μm.

Formation of coating film A ring having a diameter of 2 cm was made of an aluminum wire having a diameter of 1 mm, this ring was immersed in the dispersion, and then pulled up.

Application of magnetic field A 2T magnetic field was applied for 1 min using an electromagnet so that the lines of magnetic force were applied parallel to the film surface.

While applying the liquid curing magnetic field as it was, UV was irradiated at 6000 mJ / cm ² (365 nm) to cure the resin, and the application of the magnetic field was stopped.

Confirmation of orientation state When the cured product was observed with a crossed Nicol polarizing microscope, it was confirmed that the strontium carbonate particles were oriented along the direction of application of the magnetic field and optical rotation was developed as shown in FIG. did it. A solid line arrow indicates the direction of the polarizer, and a broken line arrow indicates the application direction of the magnetic field.

  FIG. 10 shows the appearance of the thin film.

  FIG. 11 shows the result of measuring the film thickness of the thin film in the height direction by scanning white light interferometry when the above thin film was attached to the glass substrate.

Example 5 shows an example of a method for producing an ultrathin film showing optical rotation according to the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed Gold nanoplates coated with aniline (thickness 20 nm, size 20 μm) are coated with a photocurable resin (Kyoritsu Chemical Industry Co., Ltd .; W / R No. 7710) was dispersed 1%.

Formation of coating film A ring having a diameter of 2 cm was made of an aluminum wire having a diameter of 1 mm, this ring was immersed in the dispersion, and then pulled up.

Application of magnetic field A 14.09 T magnetic field was applied for 10 min using an electromagnet so that the lines of magnetic force were applied parallel to the film surface.

While applying the liquid curing magnetic field as it was, UV was irradiated at 6000 mJ / cm ² (365 nm) to cure the resin, and the application of the magnetic field was stopped.

Confirmation of Orientation State When the above cured product was observed with a crossed Nicol polarizing microscope, it was confirmed that the gold nanoplates were oriented along the magnetic field application direction and optical rotation was developed as shown in FIG. It was. A solid line arrow indicates the direction of the polarizer, and a broken line arrow indicates the application direction of the magnetic field.

Example 6 shows an example of a method for producing an ultrathin film showing optical rotation according to the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed Silver nanorods coated with polyvinylpyrrolidone (Ф 200 nm, length 10 μm) are made of a photocurable resin (Kyoritsu Chemical Industry Co., Ltd .; W / R No. 7710) ) 5%.

Formation of coating film A ring having a diameter of 2 cm was made of an aluminum wire having a diameter of 1 mm, this ring was immersed in the dispersion, and then pulled up.

Application of magnetic field A 14.09 T magnetic field was applied for 10 min using an electromagnet so that the lines of magnetic force were applied parallel to the film surface.

While applying the liquid curing magnetic field as it was, UV was irradiated at 6000 mJ / cm ² (365 nm) to cure the resin, and the application of the magnetic field was stopped.

Confirmation of Orientation State When the above cured product was observed with a crossed Nicol polarizing microscope, it was confirmed that the silver nanorods were oriented perpendicularly to the magnetic field application direction and optical rotation was exhibited as shown in FIG. It was. A solid line arrow indicates the direction of the polarizer, and a broken line arrow indicates the application direction of the magnetic field.

Example 7 shows a method for aligning an electronic device when magnetically orienting particles having optical activity of the present invention.
Preparation of a liquid in which particles exhibiting optical rotation are dispersed Strontium carbonate crystals (purity 99%) in a thermosetting resin (manufactured by Kyoritsu Chemical Industry Co., Ltd .; W / R No. XS-OE-51) in an automatic mortar After 10% dispersion, the mixture was further dispersed with an ultrasonic homogenizer for 1 hour. The particle diameter of strontium carbonate after dispersion is about 2 μm.

The two silicon substrates having NiP protrusions with a resin filling height of 15 μm and a width of 50 μm were opposed to each other with NiP protrusions facing each other, and the gap was filled with the dispersion.

Application of magnetic field A magnetic field of 0.5 T was applied for 10 minutes using a permanent magnet so that the magnetic field lines were applied perpendicularly to the silicon substrate surface.

While applying the liquid curing magnetic field as it was, the resin was cured by heating at 100 ° C. for 10 minutes, and the application of the magnetic field was stopped.

Confirmation of alignment state When a cross section of the cured sample was observed, as shown in FIG. 14, the positions of the NiP protrusions did not match when no magnetic field application was performed (see (A)). When the magnetic field was applied, it was found that the positions of the NiP protrusions matched (see (B)).

  The examples shown in Examples 1 to 7 as described above can be applied not only to particles having optical activity but also to any other optical characteristic particles including energy ray reflection characteristics.

It is a figure which shows the state which orientated the particle | grains in the direction which is most easy to carry out magnetic field orientation or electric field orientation using a static magnetic field or an electrostatic field. It is a figure which shows the state which orientated the particle | grains in the direction which is hard to carry out magnetic field orientation or electric field orientation most easily using a rotating magnetic field or a rotating electric field. Using an electric field or magnetic field whose rotational speed changes periodically, out of the periodic rotation, the direction of the rotational axis is the direction in which the rotational speed slows down, the particles are oriented in the direction of magnetic field orientation or electric field orientation, and the rotational axis direction. It is a figure which shows the state which orientated the particle | grains in the direction which is hard to carry out a magnetic field or an electric field orientation. It is a figure which shows the method of forming a thin film using the loop-shaped support body of this invention. It is a figure which shows the method of aligning the electronic apparatus of this invention using a magnetic field. 2 is a crossed Nicols polarization micrograph of a strontium carbonate / resin composite oriented in a static magnetic field. 2 is a crossed Nicols polarization micrograph of a strontium carbonate / resin composite oriented in a rotating magnetic field. FIG. 3 is a crossed Nicols polarization micrograph of a strontium carbonate / resin composite oriented in a rotating magnetic field with periodically changing rotational speed. It is a crossed Nicols polarization micrograph of a strontium carbonate / resin composite in which a film is formed between loop-shaped supports and oriented in a static magnetic field. It is a photograph of the film | membrane formed between the loop-shaped support bodies and photocured. It is a figure which shows the measurement result of the scanning white light interferometry of the film | membrane formed between the loop-shaped support bodies and photocured. Cross-Nicol polarization micrograph of a gold nanoplate oriented in a photocured film formed between looped supports. Cross-Nicol polarization micrograph of silver nanorods oriented in a photocured film formed between looped supports. It is a cross-sectional electron micrograph of the electronic device (A) not aligned with a magnetic field, and the electronic device (B) aligned with a magnetic field.

Claims (10)

Solidizable fluidity in which particles having predetermined optical properties such as optical rotation and light reflection properties (hereinafter referred to as “optical property particles”) that are oriented by applying at least one of a magnetic field and an electric field are dispersed. By applying at least one of a magnetic field and an electric field to the substance and orienting and fixing the optical characteristic particles in a direction corresponding to the applied magnetic field and / or electric field, a desired direction according to the direction of the optical characteristic particles in the composite material having a predetermined optical anisotropy, including optical rotation and polarization (hereinafter referred to as "optically anisotropic composite material") to produce,
By adsorbing and orienting molecules and polymers having anisotropy in magnetic susceptibility and dielectric constant on the surface of metallic fine particles having a size difficult to orient by the applied magnetic field and / or electric field, the optical characteristic particles A method for producing a composite material having optical anisotropy, wherein Solidizable fluidity in which particles having predetermined optical properties such as optical rotation and light reflection properties (hereinafter referred to as “optical property particles”) that are oriented by applying at least one of a magnetic field and an electric field are dispersed. By applying at least one of a magnetic field and an electric field to the substance and orienting and fixing the optical characteristic particles in a direction corresponding to the applied magnetic field and / or electric field, a desired direction according to the direction of the optical characteristic particles Manufacturing a composite material having predetermined optical anisotropy including optical rotation and polarization (hereinafter referred to as “optically anisotropic composite material”),
A film of solidifiable liquid containing the optical property particles is stretched between the loop-shaped supports, and a magnetic field and / or an electric field is applied to orient the particles before solidifying the film. A method for producing a composite material having optical anisotropy, comprising forming an ultrathin film having optical anisotropy. The magnetic field is any one of a static magnetic field, a magnetic field rotating at a constant speed, and a rotating magnetic field whose rotation speed changes periodically, and the electric field is an electrostatic field, an electric field rotating at a constant speed, and a periodic rotation speed. Is one of the changing rotating electric fields,
By applying at least one of these magnetic and electric fields,
3. The method for producing a composite material having optical anisotropy according to claim 1, wherein the optical characteristic particles are oriented in a direction corresponding to an applied magnetic field and / or electric field.   The method for producing a composite material having optical anisotropy according to any one of claims 1 to 3, wherein the fluid substance is a solidifiable liquid resin.   The method for producing a composite material having optical anisotropy according to claim 4, wherein the fluid substance is an energy beam curable resin.   2. The solidifiable fluid substance in which the optical characteristic particles are dispersed is directly applied onto a transparent substrate to form a layer having a predetermined optical anisotropy on the transparent substrate. The manufacturing method of the composite material which has optical anisotropy of description.   The method for producing a composite material having optical anisotropy according to any one of claims 1 to 6, wherein the optical characteristic particles have optical rotation.   8. The axis of the optical characteristic particle exhibiting an anisotropic refractive index closest to the refractive index of the solidified fluid substance is oriented so as to face the direction in which light enters during use. A method for producing a composite material having optical anisotropy.   The optical material according to any one of claims 1 to 6, wherein the optical property particle has energy ray reflection property, and a composite material having a light reflection type polarization ability is formed using the particle. A method for producing a composite material having anisotropy. A the fine plate metal fine particles reflect light according to claim 1, a manufacturing method of a reflective polarizer with the plate.