JP2002006102A - Near-infrared ray shielding and reflection reducing material and its use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a near-infrared ray shielding and reflection reducing material having both reflection reducing and near-infrared ray shielding functions with high surface hardness and its use. SOLUTION: In a transparent material having reflection reducing and near- infrared ray shielding functions, the near-infrared ray shielding and reflection reducing material is so formed that a reflection reducing layer is formed on one of the outermost surfaces of a transparent substrate, and an adhesive layer is formed on the other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a near-infrared shielding anti-reflective material having both anti-reflection properties and near-infrared shielding properties, and an electronic image display device using the same.

[0002]

2. Description of the Related Art A near-infrared ray shielding function has been generally used for applications such as a heat ray shielding material and a security ink.
In recent years, a plasma display panel (PDP), which is an electronic image display device, is required to have a near-infrared shielding function because a near-infrared ray that causes a peripheral device to malfunction from a light-emitting body is generated. A material using a near-infrared shielding dye as a near-infrared shielding material for this application (Japanese Patent Laid-Open No. 09-14 / 09)
No. 5918, JP-A-11-305033, etc.)
And those using a metal (oxide) thin film (Japanese Patent Application Laid-Open
No. 217380).

When a low-refractive-index layer made of a substance having a lower refractive index than that of the substrate is formed on the outermost layer of the transparent substrate with a film thickness of about １ ／ of the wavelength of visible light (about 100 nm), surface reflection is caused by an interference effect. It is known that the transmittance is reduced and the transmittance is improved, and it is applied as an anti-reflection material in a field where reduction of surface reflection in a transparent substrate portion such as an electric product, an optical product, and a building material is required.

As a method of forming the antireflection layer, a so-called dry coating method (e.g., JP-A-63-261646) in which magnesium fluoride or the like is deposited and sputtered, or a method in which a low-refractive-index material is made into a liquid such as a solution or a dispersion. There are known two methods of a wet coating method (such as Japanese Patent Application Laid-Open No. 2-19801) in which the composition is applied to a substrate, dried, and cured as necessary. However, there is a problem that the strength of the low refractive index layer, which is the outermost layer, is low, and the layer is easily damaged.

As a reflection-reducing material having both advantages of reducing surface reflection and providing a near-infrared shielding function, a method of providing a functional layer on the back surface of a transparent substrate or between the transparent substrate and the reflection-reducing layer is known. Known (Japanese Patent Laid-Open No. 10-18 / 1998)
No. 0947). In this disclosed technique, the outermost surface is the anti-reflection layer, but the surface hardness is not always sufficient and is not suitable for use.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a near-infrared ray-shielding antireflection material having both a dereflection function and a near-infrared ray shielding function and having a high surface hardness and its use.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies in view of the above problems, and as a result, have found that a transparent material having both an anti-reflection function and a near-infrared shielding function is provided with an anti-reflection layer on the outermost surface of the transparent substrate. The present invention has been found to provide an excellent near-infrared-shielding antireflective material by providing an adhesive layer on the other outermost surface, and has completed the present invention. Further, by forming an anti-reflection layer, a near-infrared shielding layer, and an adhesive layer formed by polymerizing and curing a composition containing a fluorine-containing polyfunctional acrylate, an anti-reflection material having high surface hardness and near-infrared shielding function can be manufactured. And completed the present invention. According to the present invention, the following anti-reflection material and its use are provided. That is, the present invention provides the following [1] to

[9]. [1] A near-infrared ray-shielding anti-reflective material comprising a transparent material having both an anti-reflection function and a near-infrared shielding function, in which an anti-reflection layer is provided on the outermost surface of a transparent substrate and an adhesive layer is provided on the other outermost surface. [2] The near-infrared-shielding anti-reflective material according to [1], wherein a near-infrared shielding layer is provided on one surface of the transparent base material, and an anti-reflection layer is provided on the other side of the transparent base material. [3] A near-infrared shielding layer is provided on one surface of a transparent substrate, a near-infrared shielding layer is provided on the other surface of the transparent substrate, and an adhesive layer is provided thereon. Reflective material. [4] The near-infrared ray-shielding antireflective material according to [1], wherein an antireflection layer is provided on one surface of the transparent substrate, and an adhesive layer having a near-infrared ray shielding function is provided on the other surface of the transparent substrate. [5] an anti-reflection material in which an anti-reflection layer is provided on one surface of a transparent substrate,
The near-infrared shielding property of [1], in which a near-infrared shielding transparent material having a near-infrared shielding layer provided on one or both sides of a transparent substrate is bonded with the anti-reflection layer on the outside, and an adhesive layer is provided on the other surface. Antireflection material [6] The outermost layer of the antireflection layer is a low-refractive-index layer, and the low-refractive-index layer is obtained by polymerizing and curing a fluorine-containing polyfunctional acrylate-containing composition. 5] The near-infrared ray-shielding antireflective material according to any one of [1] to [5]. [7] The anti-reflection layer has (i) a refractive index of 1.4 in order from the outermost surface.
Low refractive index layer of 0 to 1.55, (ii) refractive index of 1.60 to
It is a multilayer structure including a high refractive index layer of 1.90 [1] to
The near-infrared ray-shielding antireflective material according to any one of [6]. [8] The near-infrared ray-shielding anti-reflective material according to any one of [1] to [7], wherein the light transmittance at 800 to 1100 nm is 20% or less and the visible light transmittance is 50% or more.

[9] An electronic image display device in which the near-infrared ray-shielding antireflective material according to any one of [1] to [8] is directly adhered to the surface of the display device with an adhesive layer.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The material of the transparent substrate used in the present invention is not particularly limited. For example, glass, polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMM)
A) Copolymer, triacetyl cellulose (TAC), polyolefin (PO), polyamide (PA), polyvinyl chloride (PVC) and the like can be preferably mentioned. Here, “transparent” indicates a light transmittance of 30% or more, more preferably 50% or more, and further preferably 80% or more.

The shape of the transparent substrate is not particularly limited, and examples thereof include a plate-like or film-like one. A film is preferable in terms of productivity and transportability, and a thickness of 10 to 500 μm is more preferable in terms of transparency and workability.

In the present invention, a conventionally known antireflection layer can be used, and the method of forming the layer is not limited. For example,
A method such as a dry coating method and a wet coating method can be used. In view of productivity and cost, a wet coating method is particularly preferable. As a wet coating method, a known method may be used, and examples thereof include a roll coating method, a spin coating method, and a dip coating method. A method capable of continuous formation, such as a roll coating method, is preferable from the viewpoint of productivity.

The anti-reflection layer can be formed as a single layer or a multilayer structure on a substrate. For example, a single layer of a low-refractive-index layer or a two-layer structure consisting of a low-refractive-index layer and a high-refractive-index layer in order from the outermost surface, a three-layer structure consisting of a low-refractive-index layer, a high-refractive-index layer, and a medium-refractive-index layer. Examples include a four-layer structure including a refractive index layer, a high refractive index layer, a low refractive index layer, and a high refractive index layer. From the viewpoint of productivity, cost, and anti-reflection effect, a two-layer structure composed of a low refractive index layer and a high refractive index layer in order from the outermost surface is preferable.

In order to form the anti-reflection layer, the low refractive index layer must have a refractive index lower than that of the layer immediately below the low refractive index layer.
It is preferably in the range of 1.55. If it exceeds 1.55, it is difficult to obtain a sufficient anti-reflection effect by wet coating, and if it is less than 1.40, it is difficult to form a sufficiently hard layer. Further, in the case of having a two-layer structure, it is necessary that the high refractive index layer has a higher refractive index than the low refractive index layer formed immediately above, so that the refractive index is 1.60 to 1.90. It is preferable that it is within the range. If the refractive index is less than 1.60, it is difficult to obtain a sufficient anti-reflection effect, and it is difficult to form a layer having a refractive index exceeding 1.90 by wet coating. The middle refractive index layer may be a layer having a lower refractive index than the high refractive index layer to be laminated and a higher refractive index than the low refractive index layer, and the refractive index is not limited.

The thickness of the anti-reflection layer in the present invention depends on the thickness of the substrate.
It depends on the type, shape, and composition of the anti-reflection layer.
Thickness equal to or less than the wavelength of visible light
Is preferred. For example, the anti-reflection effect in visible light
The thickness of the refractive index layer is 125 / n_H≤ high refractive index layer thickness
(Nm) ≦ 200 / n_H, And the thickness of the low refractive index layer is 1
00 / n_L≤ low refractive index layer thickness (nm) ≤ 165 / n_LWhen
Is designed. Where n _H, N_LIs the high refractive index
Layer and low refractive index layer.

The material constituting the high refractive index layer is not particularly limited, and inorganic materials and organic materials can be used. As an inorganic material, for example, zinc oxide, titanium oxide, cerium oxide, tin oxide, aluminum oxide, silane oxide, tantalum oxide, yttrium oxide,
Examples include ytterbium oxide, zirconium oxide, and indium tin oxide. When conductive fine particles such as indium tin oxide are used, the surface resistance can be reduced and an antistatic function can be imparted. In particular, tin oxide, indium tin oxide from the conductive side, titanium oxide from the point of refractive index,
Cerium oxide and zinc oxide are preferred. The organic material has, for example, a refractive index of 1.60 to 1.80.
For example, those obtained by polymerizing and curing a high refractive index polymerizable monomer composition containing a thiol group or a phenyl group can be used.

The high refractive index layer containing the fine particles of the inorganic material can be formed by a wet coating method. Further, an organic monomer or polymer can be used as a binder at the time of wet coating. The average particle size of the fine particles of the inorganic material preferably does not greatly exceed the thickness of the layer, and is particularly preferably 0.1 μm or less. When the average particle diameter is large, the optical performance of the high refractive index layer is deteriorated such as scattering, which is not preferable.

If necessary, the surface of the fine particles can be modified with various coupling agents. Examples of various coupling agents include organically substituted silicon compounds, metal alkoxides such as aluminum, titanium, zirconium, and antimony, and organic acid salts.

As a material constituting the low refractive index layer, for example, silicon oxide, lanthanum fluoride, magnesium fluoride,
Inorganic substances such as cerium fluoride and magnesium fluoride and fluorine-containing organic compounds can be used alone or as a mixture. Further, a non-fluorinated monomer or polymer can be used as a binder.

The above-mentioned fluorine-containing organic compound is not particularly limited. For example, a monofunctional or polyfunctional fluorine-containing (meth) acrylate, a fluorine-containing itaconic ester, a fluorine-containing maleate, Examples include monomers such as a fluorine silicon compound, and polymers thereof. Particularly, a fluorine-containing (meth) acrylate is preferred from the viewpoint of reactivity. Here, (meth) acrylic is
Acrylic and / or methacrylic. In particular, a fluorine-containing polyfunctional (meth) acrylate is preferred in terms of hardness and refractive index. By curing these fluorine-containing organic compounds, a layer having a low refractive index and a high hardness can be formed.

The polyfunctional fluorine-containing (meth) acrylate is preferably a bifunctional to tetrafunctional fluorine-containing (meth) acrylate. Among them, examples of the bifunctional fluorine-containing (meth) acrylate include 1,2-di (meth) acryloyloxy-
4,4,4-trifluorobutane, 1,2-di (meth)
Acryloyloxy-4,4,5,5,5-pentafluoropentane, 1,2-di (meth) acryloyloxy-4,4,5,5,6,6,6-heptafluorohexane, 1,2- Di (meth) acryloyloxy-4,4,
5,5,6,6,7,7,7-nonafluoroheptane,
1,2-di (meth) acryloyloxy-4,4,5
5,6,6,7,7,8,8,8-undecafluorooctane, 1,2-di (meth) acryloyloxy-4,
4,5,5,6,6,7,7,8,8,9,9,9-tridecafluorononane, 1,2-di (meth) acryloyloxy-4,4,5,5,6 6, 7, 7, 8, 8,
9,9,10,10,10-pentadecafluorodecane, 1,2-di (meth) acryloyloxy-5,5
6,6,7,7,8,8,9,9,10,10,10-
Tridecafluorodecane, 1,2-di (meth) acryloyloxy-4,4,5,5,6,6,7,7,8,
8,9,9,10,10,11,11,11-heptadecafluoroundecane, 1,2-di (meth) acryloyloxy-4,4,5,5,6,6,7,7,8, 8,
9, 9, 10, 10, 11, 11, 12, 12, 12-
Nonadecafluorododecane, 1,2-di (meth) acryloyloxy-5,5,6,6,7,7,8,8,9,
9,10,10,11,11,11-heptadecafluorododecane, 1,2-di (meth) acryloyloxy-
4-trifluoromethyl-5,5,5-trifluoropentane, 1,2-di (meth) acryloyloxy-5-
Trifluoromethyl-6,6,6-trifluorohexane, 1,2-di (meth) acryloyloxy-3-methyl-4,4,5,5,5-pentafluoropentane,
1,2-di (meth) acryloyloxy-3-methyl-
4,4,5,5,6,6,6-hexafluorohexane, 1,4-di (meth) acryloyloxy-2,2
3,3-tetrafluorobutane, 1,5-di (meth) acryloyloxy-2,2,3,3,4,4-hexafluoropentane, 1,6-di (meth) acryloyloxy-2,2 3,3,4,4,5,5-octafluorohexane, 1,7-di (meth) acryloyloxy-
2,2,3,3,4,4,5,5,6,6-decafluoroheptane, 1,8-di (meth) acryloyloxy-
2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane, 1,9-di (meth) acryloyloxy-2,2,3,3,4,4 , 5,5,6,6,
7,7,8,8-tetradecafluorononane, 1,10
Di (meth) acryloyloxy-2,2,3,3
4,4,5,5,6,6,7,7,8,8,9,9-hexadecafluorodecane, 1,11-di (meth) acryloyloxy-2,2,3,3,4 4,5,5,6
6,7,7,8,8,9,9,10,10-octadecafluoroundecane, 1,12-di (meth) acryloyloxy-2,2,3,3,4,4,5,5 6,6
7,7,8,8,9,9,10,10,11,11-eicosafluorododecane, 2-hydroxy-4,4,4
-Trifluorobutyl-2 ', 2'-bis {(meth) acryloyloxymethyl} propionate, 2-hydroxy-4,4,5,5,5-pentafluoropentyl-
2 ', 2'-bis {(meth) acryloyloxymethyl}
Propionate, 2-hydroxy-4,4,5,5
6,6,6-heptafluorohexyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 2-hydroxy-4,4,5,5,6,6,7,
7,7-nonafluoroheptyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 2-
Hydroxy-4,4,5,5,6,6,7,7,8,
8,9,9,9-Tridecafluorononyl-2 ', 2'-
Bis {(meth) acryloyloxymethyl} propionate, 2-hydroxy-4,4,5,5,6,6,7,
7, 8, 8, 9, 9, 10, 10, 11, 11, 11-
Nonadecafluoroundecyl-2 ', 2'-bis {(meth) acryloyloxymethyl} propionate, 2-
Hydroxy-4,4,5,5,6,6,7,7,8,
8, 9, 9, 10, 10, 11, 11, 12, 12, 1
3,13,13-Hen-eicosafluorotridecyl-
2 ', 2'-bis {(meth) acryloyloxymethyl}
Propionate and the like can be preferably mentioned. These di (meth) acrylates can be used alone or as a mixture when used.

Further, as the above-mentioned fluorine-containing polyfunctional (meth) acrylate other than difunctional, trifunctional and tetrafunctional
Functional fluorine-containing polyfunctional (meth) acrylates are exemplified. Specific examples of the trifunctional fluorine-containing polyfunctional (meth) acrylate include, for example, 2- (meth) acryloyloxy-4,4,5,5,6,6,7,7,7
7-Nonafluoroheptyl-2 ', 2'-bis {(meth)
Acryloyloxymethyl dipropionate, 2- (meth) acryloyloxy-4,4,5,5,6,6
7,7,8,8,9,9,9-Undecafluorononyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 2- (meth) acryloyloxy-4,4,5 5,6,6,7,7,8,8,9,9,
10,10,11,11,11-heptadecafluoroundecyl-2 ', 2'-bis {(meth) acryloyloxymethyl} propionate, 3-{(1-trifluoromethyl) octafluorocyclopentyl} -2- Acryloyloxypropyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 3-{(1-
(Trifluoromethyl) decafluorocyclohexyl｝-
2-acryloyloxypropyl-2 ', 2'-bis {(meth) acryloyloxymethyl} propionate, 3-{(1-trifluoromethyl) hexafluorocyclobutyl} -2-acryloyloxypropyl-
2 ', 2'-bis {(meth) acryloyloxymethyl}
Propionate, and 1- (meth) acryloyloxymethyl-3,3,4,4,5,5,6,6,6-nonafluorohexyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} Propionate, 1- (meth) acryloyloxymethyl-3,3,4,4,5,5,5
6,6,7,7,8,8,8-Undecafluorooctyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 1- (meth) acryloyloxymethyl-3,3,4 , 4,5,5,6,6,7,7,
8,8,9,9,10,10,10-heptadecafluorodecyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 2-{(1-trifluoromethyl) octafluorocyclopentyl} -1- (acryloyloxymethyl) ethyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate, 2-
{(1-trifluoromethyl) decafluorocyclohexyl} -1- (acryloyloxymethyl) ethyl-
2 ', 2'-bis {(meth) acryloyloxymethyl}
And propionate and 2-{(1-trifluoromethyl) hexafluorocyclobutyl} -1- (acryloyloxymethyl) ethyl-2 ′, 2′-bis {(meth) acryloyloxymethyl} propionate. These (meth) acrylic esters can be used alone or as a mixture when used.

Specific examples of tetrafunctional fluorine-containing polyfunctional (meth) acrylates include 1, 2, 7, and
8-tetra (meth) acryloyloxy-4,4,5
5-tetrafluorooctane, 1,2,8,9-tetra (meth) acryloyloxy-4,4,5,5,6,6
-Hexafluorononane, 1,2,9,10-tetra (meth) acryloyloxy-4,4,5,5,6
6,7,7-octafluorodecane, 1,2,10,1
1-tetra (meth) acryloyloxy-4,4,5
5,6,6,7,7,8,8-decafluoroundecane, 1,2,11,12-tetra (meth) acryloyloxy-4,4,5,5,6,6,7,7,8 , 8,
Preferred is 9,9-dodecafluorododecane. In use, the above-mentioned fluorine-containing polyfunctional (meth) acrylate can be used alone or as a mixture.

In the low refractive index layer, other components such as a fluorine-containing polymer, a non-fluorine-based monomer, and organic or inorganic fine particles can be blended as long as the effects of the present invention are not impaired.

The above-mentioned fluorine-containing polymer includes linear polymers such as homopolymers and copolymers of the above-mentioned monofunctional fluorine-containing monomers, and copolymers with monomers containing no fluorine. , A polymer containing a carbocyclic or heterocyclic ring in the chain, a cyclic polymer,
Comb polymers and the like.

As the non-fluorine-based monomer, conventionally known ones can be used. For example, monofunctional or polyfunctional (meth) acrylic acid esters, silicon compounds such as tetraethoxysilane and the like can be mentioned.

As the organic or inorganic fine particles,
Conventionally known ones can be used. For example, silicon oxide fine particles, organic polymer fine particles and the like can be mentioned. It is preferable that the average particle diameter of the fine particles does not greatly exceed the thickness of the layer, and it is particularly preferable that the average particle diameter be 0.1 μm or less. When the average particle diameter is large, the optical performance of the low refractive index layer is deteriorated such as scattering, which is not preferable.

If necessary, the surface of the fine particles can be modified with various coupling agents. Examples of various coupling agents include organically substituted silicon compounds, metal alkoxides such as aluminum, titanium, zirconium, and antimony, and organic acid salts.
In particular, by modifying the surface with a reactive group such as (meth) acryl, a film having high hardness can be formed.

The anti-reflection layer may contain other components in addition to the above-mentioned compounds as long as the effects of the present invention are not impaired. Other components are not particularly limited, for example, inorganic or organic pigments, polymers, and polymerization initiators, polymerization inhibitors, antioxidants, dispersants, surfactants, light stabilizers, leveling agents and the like Additives and the like. An arbitrary amount of solvent can be added as long as drying is performed after film formation in the wet coating method.

The anti-reflection layer can be formed by forming a layer by wet coating, followed by a curing reaction by irradiating or heating active energy rays such as heat, ultraviolet rays, and electron beams as needed. The curing reaction by the active energy ray is preferably performed in an atmosphere of an inert gas such as nitrogen or argon.

Further, one or more layers can be formed between the transparent substrate and the antireflection layer. For this layer, an inorganic substance, an organic substance, or a mixture thereof can be used.
In addition, these layers are provided with one or more functions such as hard coat properties, anti-glare properties, prevention of Newton's rings, blocking of light of a specific wavelength, improvement of adhesion between layers, conductivity including antistatic functions, and color tone correction. be able to. In particular, it is preferable to form a layer having a hard coat property capable of improving hardness.
A known method can be used for giving each function.

For the above-mentioned layer, an inorganic material, an organic material, or a mixture thereof can be used. For example, in the case of forming a hard coat layer, as an organic material to be used, a cured product of a polyfunctional or monofunctional (meth) acrylate, a silicon compound such as tetraethoxysilane, or the like can be given. From the viewpoint of compatibility between productivity and hardness, it is particularly preferable to be a polymerized and cured product of an ultraviolet-curable polyfunctional acrylate monomer composition.

The UV-curable polyfunctional acrylate monomer composition is not particularly limited, and may be, for example, a mixture of one or more known UV-curable polyfunctional acrylate monomers, or a known UV-curable polyfunctional acrylate monomer. The curable hard coat material can be used as it is or by adding other components. Examples of the ultraviolet-curable polyfunctional acrylate monomer include, for example, dipentaerythritol hexaacrylate, tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate, pentaerythritol tetraacrylate, trimethylolpropane triacrylate, 1,6-hexanediol diacrylate Examples include polyfunctional alcohol derivatives such as acrylate, 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane, polyethylene glycol diacrylate, and polyurethane acrylate.

The hard coat layer may contain other components in addition to the above compounds, as long as the effects of the present invention are not impaired. Other components are not particularly limited, for example, inorganic or organic fillers, inorganic or organic fine particles, inorganic or organic pigments, polymers, and polymerization initiators, polymerization inhibitors, antioxidants, dispersants, Additives such as a surfactant, a light stabilizer, and a leveling agent are included. An arbitrary amount of solvent can be added as long as drying is performed after film formation in the wet coating method.

The method for forming the layer is not particularly limited. When an organic material is used, the layer can be formed by a general wet coating method such as roll coating or die coating. The formed layer can be subjected to a curing reaction by heating or irradiation with active energy rays such as ultraviolet rays and electron beams as necessary.

The thickness of the hard coat layer is preferably 2 to 20 μm. When the thickness is less than 2 μm, it is difficult to obtain a sufficient hardness such as a decrease in pencil hardness, and when the thickness exceeds 20 μm, problems such as a decrease in bending resistance occur. In the case of laminating two or more layers, the total thickness may be within the above range,
The thickness of one layer is not particularly limited.

It is necessary to provide a near-infrared shielding function separately from the anti-reflection layer. The method for forming the layer may be any of conventionally known methods, and is not particularly limited. For example, a method of forming a layer containing a near-infrared ray shielding agent by a wet coating method, a method of forming a near-infrared ray shielding film by sputtering or vapor deposition, and the like can be given. Also, its thickness is not limited.

The near-infrared shielding agent may be a conventionally known one, and is not particularly limited. Examples thereof include metal oxides such as indium tin oxide, indium oxide, tin oxide, silicon oxide, aluminum oxide, zinc oxide, and tungsten oxide. ;
Organic dye types such as phthalocyanine type, anthraquinone type, naphthoquinone type, cyanine type, naphthalocyanine type, polymer condensed azo type and pyrrole type; dithiol type and mercaptonaphthol type organic metal complexes. These near infrared shielding agents can be used alone or
More than one type can be used.

As commercially available near-infrared shielding materials, for example, IRG-02, IRG-022, IRG-023,
IRG-040 (all manufactured by Nippon Kayaku Co., Ltd.), IR
1, IR2, IR3, IR4, TX-EX-810K,
TX-EX-812K, TX-EX-905B (above,
Nippon Shokubai Co., Ltd.), SIR-128, SIR-13
0, SIR-132, SIR-159 (all manufactured by Mitsui Chemicals, Inc.), CIR-1080, CIR-1081
(The above are manufactured by Nippon Carlit Co., Ltd.), NKX-119
9 (manufactured by Nippon Kogaku Dye Co., Ltd.) and MIR101 (manufactured by Midori Kagaku Co., Ltd.).

When a layer containing a near-infrared ray shielding agent is formed on a transparent substrate, the layer can be formed using an organic binder in which the above-mentioned near-infrared ray shielding agent is dissolved or dispersed. Examples of the organic binder include polyolefins such as polyethylene and polypropylene, polystyrene compounds such as polystyrene and poly (α-methylstyrene), styrene-butadiene copolymer, and styrene.
Isoprene copolymer, styrene-maleic acid copolymer,
Styrene-based copolymers such as styrene-maleic acid ester copolymers; polyvinyl-based compounds such as polyvinyl chloride, polyvinyl alcohol, and polyvinyl acetate; poly (methyl methacrylate), poly (ethyl methacrylate), and poly ( Poly (alkyl) methacrylates such as propyl (meth) acrylate and butyl poly (meth) acrylate; polyethers such as polyoxymethylene and polyethylene oxide;
Polyethylene succinate, polybutylene adipate,
Polyesters such as polylactic acid, polyglycolic acid, polycaprolactone and polyethylene terephthalate; natural polymers such as cellulose, starch and rubber; 6-nylon;
Polyamides such as 6,6-nylon; polyurethane, epoxy resin, polyacrylic acid resin, rosin, modified rosin,
Examples thereof include terpene resins, phenol resins, aliphatic or alicyclic hydrocarbon resins, aromatic petroleum resins, and halogen-modified products thereof, and these can be used alone or in combination of two or more. Also, using a curable monomer, apply a layer,
After formation, it may be cured by irradiation with active energy rays such as heat or ultraviolet rays.

The near-infrared shielding agent includes two or more types of near-infrared shielding agents having maximum peaks in different wavelength ranges.
They may be used in the same or separate layers. For example, a near-infrared shielding agent having a maximum peak at 800 to 900 nm and a near-infrared shielding agent having a maximum peak at 900 to 1000 nm may be contained in separate layers and laminated on a transparent substrate.

In the near-infrared shielding anti-reflective material of the present invention, the order of forming the anti-reflection layer and the near-infrared shielding layer is not particularly limited as long as the anti-reflection layer is the outermost layer. For example, 1) a reflection reducing layer is provided on one side of a transparent base material, and a near-infrared shielding layer is provided on the other side of the transparent base material. 2) A near-infrared shielding layer is provided on one side of the transparent base material. A reflective layer is provided. 3) An anti-reflection material having an anti-reflection layer provided on one surface of a transparent base material and a near-infrared shielding transparent material having a near-infrared shielding layer provided on one or both surfaces of another transparent base material are subjected to anti-reflection. A method such as laminating the layers with the outer side may be used.

For example, in the case of 1), the order of forming the layers is not limited, and even if the anti-reflection layer is formed on the back of the transparent substrate on which the near-infrared shielding layer is formed, A near-infrared shielding layer may be formed on the back surface of the substrate.

For example, in the case of 2), a near-infrared shielding function is imparted to a functional layer having a hard coat property and the like formed between the anti-reflection layer and the transparent substrate, and formed as a layer having two or more functions. can do.

In the case of 3), for example,
It can be performed using fusion or an adhesive layer. The term “fusion” as used herein refers to the integration of materials by heating and pressing. The material used for the adhesive layer is not particularly limited, and examples thereof include an acrylic pressure-sensitive adhesive, an ultraviolet-curable adhesive, and a thermosetting adhesive. In addition, one or more functions such as blocking of light in a specific wavelength range, improvement of contrast, and correction of color tone can be provided to the adhesive layer.

Further, an adhesive layer can be provided on the outermost surface of the surface of the near-infrared shielding anti-reflection material on which the anti-reflection layer is not formed. The material used for the adhesive layer is not particularly limited, and examples thereof include an acrylic pressure-sensitive adhesive, an ultraviolet curable adhesive, and a thermosetting adhesive.
Further, one or more functions such as blocking of light in a specific wavelength range, improvement of contrast, and correction of color tone can be provided to the adhesive layer. For example, when the transmitted light color of the anti-reflection material has a yellowish tint or the like, it is desirable to correct the color tone by adding a pigment or the like when it is not preferable.

An adhesive layer having a near-infrared shielding function is formed on the back surface of the anti-reflection material having only the anti-reflection layer,
A near-infrared shielding anti-reflective material can be produced. The near infrared shielding agent and the adhesive layer used in this case can use the above-mentioned materials, respectively.

The above-mentioned functional anti-reflection material can be used for applications requiring an anti-reflection effect and a near-infrared shielding property. In particular, when used for an electronic image display device, it can be used for the purpose of suppressing surface reflection and blocking near infrared rays generated from the device.

Examples of the electronic image display device include a cathode ray tube, a PDP, and a liquid crystal display device. The adhesive layer can be used in close contact with an adhesive layer such that the surface on which the anti-reflection layer is not formed directly contacts the surface.

When used in the above-mentioned applications, if the transmittance at 800 to 1100 nm is 20% or less, particularly 10% or less as a near-infrared shielding function, malfunction of the display device itself or peripheral machines can be prevented. Therefore, it is preferable.
On the other hand, if the visible light transmittance is less than 50%, the image on the display becomes unclear, which is not preferable.

[0049]

According to the present invention, a functional anti-reflective material having an anti-reflection effect and a near-infrared shielding property can be obtained. Further, in the electronic image display device of the present invention, mounting can be simplified by the adhesive layer of the anti-reflection material, and a clear image due to the anti-reflection and an effect of reducing malfunction due to near infrared rays generated from the device can be obtained.

【Example】

Hereinafter, the present invention will be described in more detail with reference to specific examples. The refractive index of the cured product of the anti-reflection layer coating liquid adjusted in the production example was measured as follows. (1) Dip coater (manufactured by Asahi Kasei Kogyo Co., Ltd.) on an acrylic plate having a refractive index of 1.49 (trade name “Deragrass A”), and each of the coating liquids for the anti-reflection layer is dried using a dip coater (manufactured by Motosugiyama Chemical Co., Ltd.) The wavelength of light showing λ / 4 in film thickness is 55
Coating was performed with the thickness of the layer adjusted to about 0 nm. (2) After drying the solvent, if necessary, it was cured by irradiating it with 400 mJ of ultraviolet light using a 120 W high-pressure mercury lamp under a nitrogen atmosphere using an ultraviolet irradiation device (manufactured by Iwasaki Electric Co., Ltd.). (3) The back surface of the acrylic plate was roughened with sandpaper, and the surface painted with black paint was used as a spectrophotometer (“U-best”).
50 ”, manufactured by JASCO Corporation, 5 °, -5 °
The regular reflectance was measured. (4) The refractive index was calculated from the extreme value R of the reflectance using the following equation.

[0051]

(Equation 1)

Production Example 1-1 Hard Coat Layer Coating Solution (H
Preparation of C-1) 70 parts by weight of dipentaerythritol hexaacrylate, 30 parts by weight of 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane, a photopolymerization initiator (trade name “IRGACURE184”, Ciba-Geigy Co., Ltd.) Co., Ltd.) (4 parts by weight) and 100 parts by weight of isopropanol were mixed to prepare a coating liquid for hard coat layer (HC-1).

Production Example 1-2 Preparation of Coating Solution (AG-1) for Antiglare Hard Coat Layer Production Example except that 20 parts by weight of acrylic resin particles (trade name “Art Pearl”, manufactured by Negami Kogyo Co., Ltd.) were added. In the same manner as in Example 1, a coating liquid for hard coat layer (AG-1) was prepared.

Production Example 1-3 Coating Solution for Low Refractive Index Layer (L-
Preparation of 1) 1,10-Diacryloyloxy-2,2,3,3
4,4,5,5,6,6,7,7,8,8,9,9-hexadecafluorodecane 70 parts by weight, dipentaerythritol hexaacrylate 10 parts by weight, silica gel fine particle dispersion (trade name “XBA -ST ", manufactured by Nissan Chemical Co., Ltd.) 60 parts by weight, photopolymerization initiator (trade name" KAYACU "
RE BMS "(manufactured by Nippon Kayaku Co., Ltd.) in an amount of 5 parts by weight to prepare a coating liquid for a low refractive index layer (L-1). The refractive index of the polymerized and cured product of L-1 was 1.42.

Production Example 1-4 Coating Solution for Low Refractive Index Layer (L-
Preparation of 2) 1,2,9,10-tetraacryloyloxy-4,
4,5,5,6,6,7,7-octafluorodecane 5
0 parts by weight, 30% dispersion of silica fine particles (trade name “XBA
−ST ”, manufactured by Nissan Chemical Co., Ltd.) 120 parts by weight, 2 ′,
2'-bis (acryloyloxymethyl) propionic acid (2-hydroxy) -4,4,5,5,6,6,7,
7, 8, 8, 9, 9, 10, 10, 11, 11, 11-
Nonadecafluoroundecyl 10 parts by weight, butyl alcohol 900 parts by weight, photopolymerization initiator (trade name "KAYAC"
URE BMS "(manufactured by Nippon Kayaku Co., Ltd.) in an amount of 5 parts by weight to prepare a coating liquid for a low refractive index layer (L-2). L-2
The polymer cured product had a refractive index of 1.47.

Production Example 1-5 Coating Liquid for Low Refractive Index Layer (L-
Preparation of 3) n-butyl acrylate and 3,3,4,4, acrylic acid
5,5,6,6,7,7,8,8,9,9,10,1
10 parts by weight of a 1: 1 copolymer of 0,10-heptadecafluorodecyl and 900 parts by weight of benzotrifluoride were mixed to prepare a coating liquid for a low refractive index layer (L-3). The refractive index of L-3 after drying the solvent was 1.36.

Production Example 1-6 Coating solution for high refractive index layer (H-
Preparation of 1) Indium tin oxide (ITO) having an average particle size of 0.07 μm
85 parts by weight of fine particles, 15 parts by weight of tetramethylol methane triacrylate, a photopolymerization initiator (trade name "KAYAC"
URE BMS ", manufactured by Nippon Kayaku Co., Ltd.) and 900 parts by weight of butyl alcohol were mixed to prepare a coating liquid (H-1) for a high refractive index layer. The refractive index of the polymerized and cured product of H-1 was 1.63.

Production Example 2-1 Near-infrared shielding layer coating solution (N
Production of IR-1) 3.2 parts by weight of "IRG-022" (manufactured by Nippon Kayaku Co., Ltd.), 0.5 parts by weight of "IR-1" (manufactured by Nippon Shokubai Co., Ltd.), and SIR- 159 (manufactured by Mitsui Chemicals, Inc.), 1.6 parts by weight, 440 parts by weight of a linear saturated polyester resin (trade name: "Vylon 300", manufactured by Toyobo Co., Ltd.) as a binder, and chloroform 1 as a solvent
000 parts by weight were mixed and dissolved by stirring to prepare a coating liquid for near-infrared shielding layer NIR-1 (hereinafter simply referred to as NIR-1; the same applies hereinafter).

Production Example 2-2 Preparation of Hardcoat Coating Solution for Near-Infrared Shielding Layer (NIR-2) 3.2 parts by weight of “IRG-022” and 0.5 part by weight of “IR-1” as near-infrared absorbing dyes , SIR-159
A commercially available ultraviolet-curable hard coat material (trade name “Z7501”, manufactured by JSR Corporation) 88 obtained by dissolving 6 parts by weight in 100 parts by weight of methyl ethyl ketone is used as a binder.
The mixture was mixed and stirred with 0 parts by weight to prepare a hard coat coating liquid NIR-2 for a near-infrared shielding layer.

Production Example 2-3 Production of Coating Solution for Near Infrared Shielding Adhesive Layer (NIR-3) 3.2 parts by weight of "IRG-022" and 0.5 part by weight of "IR-1" as near infrared absorbing dyes SIR-159
A mixture of 6 parts by weight and 100 parts by weight of methyl ethyl ketone dissolved therein was dissolved in an acrylic resin-based adhesive (trade name “AS”).
2140 "and 650 parts by weight of Ongaku Yushi Kogyo Co., Ltd.) and 10 parts by weight of a curing agent (trade name" B-45 "on the other hand, Yatsugyo Oil Industry Co., Ltd.) with NIR coating liquid NIR. -3 was prepared.

Example 1 PET film having a thickness of 188 μm (trade name “A430”)
0 "(manufactured by Toyobo Co., Ltd.), and the coating liquid L-1 for low refractive index layer prepared in Production Example 1-3 was dried at a dry film thickness of λ / After the thickness of the layer is adjusted and applied so that the wavelength of the light indicating No. 4 is about 550 nm, 400
Cured by mJ ultraviolet light. On the back side of the film, a coating liquid NIR-1 for a near-infrared shielding layer prepared in Production Example 2-1
Was applied using an applicator so as to have a dry film thickness of about 25 μm, and dried by heating at 90 ° C. for 1 hour. An acrylic pressure-sensitive adhesive sheet (trade name “Non-Carrier”, manufactured by Lintec Co., Ltd.) was evenly stuck thereon with a hand roller to produce a near-infrared-shielding anti-reflective material. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated as follows.
The results are shown in Table 1. 1. Spectral reflectance; Near-infrared shielding anti-reflective material was roughened with sandpaper and painted with black paint, and 5 °, −5 was measured with a spectrophotometer (“U-best 50”, manufactured by JASCO Corporation). ° Regular reflectance was measured, and the minimum reflectance was read from the spectrum. When the interference of the hard coat was observed in the spectrum, the center value of the upper end and the lower end was read. 2. Visible light transmittance: haze meter (“NDH200
0 ", manufactured by Nippon Denshoku Industries Co., Ltd.). 3. Near-infrared shielding: spectrophotometer (“UV2000”,
The transmittance in a wavelength range of 800 to 1100 nm was measured by Shimadzu Corporation. 4. Surface strength: # 00 on the surface of near-infrared shielding anti-reflective material
A 100 g load was applied to the steel wool of No. 00, and the sample was rubbed back and forth for 10 times to visually evaluate how the surface was damaged. However, the judgment is shown as A: almost no damage can be discriminated, B: slight damage, C: clear damage remains, D: anti-reflection layer peels off.

Example 2 PET film having a thickness of 188 μm (trade name “A430”)
0 "), the coating liquid for hard coat prepared in Production Example 1-1 was applied using a bar coater to a dry film thickness of about 4 μm. After drying, 120
The film was irradiated with ultraviolet light of 400 mJ using a W high-pressure mercury lamp and cured to produce a hard-coated PET film. The coating liquid H-1 for high refractive index layer prepared in Production Example 1-6 was further coated thereon with a dip coater such that the wavelength of light showing λ / 4 in dry film thickness was about 550 nm. After preparing and applying the same, 400 mJ in the same manner under a nitrogen atmosphere.
Cured by UV light. Then, the coating liquid L- for the low refractive index layer prepared in Production Example 1-3 by a dip coater.
After adjusting the thickness of the layer so that the wavelength of light exhibiting λ / 4 in the dry film thickness becomes about 550 nm and applying the same, it is similarly cured with 400 mJ of ultraviolet light in a nitrogen atmosphere and is a PET film with reduced reflection. Was prepared. A near-infrared shielding layer was formed on the back surface in the same manner as in Example 1, and an acrylic pressure-sensitive adhesive sheet was adhered thereon in the same manner as in Example 1 to produce a near-infrared shielding and anti-reflective material. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Example 3 A near-infrared ray-shielding antireflective material was produced in the same manner as in Example 2 except that L-2 was used instead of the coating liquid L-1 for a low refractive index layer. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Example 4 A near-infrared ray-shielding antireflective material was prepared in the same manner as in Example 2 except that the coating liquid AG-1 for an antiglare hard coat layer prepared in Production Example 1-2 was used instead of HC-1. Was manufactured. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Example 5 A PET film having a thickness of 188 μm (trade name “A430”)
0 "), the coating liquid NIR-2 for near-infrared shielding hard coat prepared in Production Example 2-2 was applied using a bar coater to a dry film thickness of about 10 μm, and dried at 90 ° C. for 2 minutes. After drying, the film was irradiated with ultraviolet light of 400 mJ using a 120 W high-pressure mercury lamp using an ultraviolet irradiation device, and cured to produce a near infrared shielding hard coat-treated PET film.
A high-refractive-index layer and a low-refractive-index layer were applied thereon by a dip coater and cured in the same manner as in Example 2. An acrylic pressure-sensitive adhesive sheet was adhered to the back surface in the same manner as in Example 1 to produce a near-infrared shielding and anti-reflective material. Spectral reflectance of the obtained near-infrared shielding anti-reflective material, visible light transmittance,
The near-infrared shielding property and the surface strength were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Example 6 First, a low reflection PET film was produced in the same manner as in Example 2. A near-infrared ray shielding hard coat layer was applied to one surface of another PET film and cured in the same manner as in Example 5 to produce a near-infrared ray shielding film. The two types of films were bonded together with an acrylic pressure-sensitive adhesive sheet so that the layer to which each was applied was on the outside, and Example 1 was placed on the near-infrared shielding layer.
An acrylic pressure-sensitive adhesive sheet was bonded in the same manner as described above to produce a near-infrared ray shielding / reflecting material. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Example 7 First, a low reflection PET film was produced in the same manner as in Example 2. The coating liquid NIR-3 for the near-infrared shielding adhesive layer prepared in Production Example 2-3 was dried on the back side with an applicator to a dry film thickness of 2%.
The composition was applied so as to have a thickness of 5 μm, and dried in an oven at 90 ° C. for 2 minutes to obtain a near-infrared ray shielding / reducing material. The spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength of the obtained near-infrared ray shielding anti-reflective material were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Comparative Example 1 A near-infrared ray shielding material was prepared in the same manner as in Example 2 except that the anti-reflection layer was not formed, and the spectral reflectance, visible light transmittance, near-infrared ray shielding property, and surface strength were compared with those in Example 1. It evaluated similarly. The results are shown in Table 1.

Comparative Example 2 A near-infrared ray-shielding antireflection material was prepared in the same manner as in Example 1 except that UV curing was not performed using L-1 as a coating liquid for a low refractive index layer, and spectral reflectance and visible light were measured. The light transmittance, near-infrared shielding property, and surface strength were evaluated in the same manner as in Example 1. The results are shown in Table 1.

Comparative Example 3 A near-infrared ray-shielding antireflection material was prepared in the same manner as in Example 5 except that UV curing was not performed using L-3 as a coating liquid for a low refractive index layer. The light transmittance, near-infrared shielding property, and surface strength were evaluated in the same manner as in Example 1. The results are shown in Table 1.

The near-infrared shielding / reflecting material prepared in Examples 1 to 7 reduces the reflection of light on the surface, and transmits near-infrared light in a near-infrared wavelength region of not more than 20% and visible light transmittance of not less than 50%. It has a shielding function. In contrast, Comparative Example 1 does not have the anti-reflection function, and thus has high surface reflection. Further, in Comparative Examples 2 and 3, the optical performance was sufficient, but the surface strength was weak, which proves to be unsuitable for practical use.

Examples 8 to 14 The near-infrared ray-shielding anti-reflective material prepared in Examples 1 to 7 was directly adhered to the surface of a flat CRT display using an adhesive layer using a hand roller, and the visibility of images was evaluated. , And Table 2. However, ○: the image is clearly seen with little reflection of the background light, Δ: reflection of the background light is recognized, and ×: the reflection is too much to make the screen difficult to see.

Comparative Example 4 The near-infrared shielding material produced in Comparative Example 1 was adhered to a CRT in the same manner as in Examples 8 to 14, and the visibility of the image was evaluated.

Comparative Example 5 The near-infrared ray shielding / reflection material prepared in Example 1 was 2 mm thick.
Was bonded to a transparent acrylic plate (trade name "Deragrass A"), and was placed at an interval of about 5 mm from the CRT surface. The visibility of the image was evaluated in the same manner as in Examples 8 to 14, and the results are shown in Table 2.

[0075]

[Table 1]

[0076]

[Table 2]

In Examples 8 to 14, reflection on the screen surface was suppressed, and very clear and easy-to-view images were obtained. On the other hand, in Comparative Example 4, since the anti-reflection layer was not formed, the surface reflection was large, and there was no great difference from the portion where no adhesive was applied. In Comparative Example 5, the number of reflection points increased, and the screen became more unclear.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H048 CA04 CA12 CA19 CA24 2K009 AA04 AA05 AA15 BB24 CC09 CC24 CC26 DD02 DD05 EE00 4F100 AA20 AA33 AK17B AK25B AT00A AT00E BA03 BA04 BA05 BA07 BA10B BA10C BA10E BA26 J01 E30L JN01E JN02D JN02E JN06B JN06E JN18B 5C058 AA11 BA33 BA35

Claims (9)

[Claims] 1. A near-infrared ray-shielding anti-reflection material comprising a transparent material having both an anti-reflection function and a near-infrared ray shielding function, wherein an anti-reflection layer is provided on the outermost surface of a transparent substrate and an adhesive layer is provided on the other outermost surface. Wood. 2. The near-infrared ray-shielding anti-reflection according to claim 1, wherein a near-infrared ray shielding layer is provided on one side of the transparent substrate, an anti-reflection layer is provided, and an adhesive layer is provided on the other side of the transparent substrate. Wood. 3. The near-infrared ray according to claim 1, wherein an anti-reflection layer is provided on one side of the transparent substrate, a near-infrared ray shielding layer is provided on the other side of the transparent substrate, and an adhesive layer is provided thereon. Shielding anti-reflective material. 4. The near-infrared shielding anti-reflective material according to claim 1, wherein an anti-reflection layer is provided on one surface of the transparent substrate, and an adhesive layer having a near-infrared shielding function is provided on the other surface of the transparent substrate. . 5. An anti-reflective material having an anti-reflection layer provided on one surface of a transparent substrate, and a near-infrared shielding transparent material having a near-infrared shielding layer provided on one or both surfaces of the transparent substrate, wherein the anti-reflection layer is on the outside. 2. The near-infrared ray-shielding anti-reflective material according to claim 1, wherein the near-infrared ray-shielding anti-reflection material is provided with an adhesive layer on the other surface. 6. An outermost layer of the anti-reflection layer is a low refractive index layer,
The near-infrared ray-shielding anti-reflective material according to any one of claims 1 to 5, wherein the low refractive index layer is obtained by polymerizing and curing a composition containing a fluorine-containing polyfunctional acrylate. 7. The anti-reflection layer comprises, in order from the outermost surface, (i) a low refractive index layer having a refractive index of 1.40 to 1.55, and (ii) a refractive index of 1.
The near-infrared ray-shielding anti-reflective material according to any one of claims 1 to 6, which has a multilayer structure including a high refractive index layer having a refractive index of 60 to 1.90. 8. The light transmittance of 800 to 1100 nm is 2
The near-infrared ray-shielding antireflection material according to any one of claims 1 to 7, wherein the near-infrared ray shielding material has a visible light transmittance of 50% or more. 9. An electronic image display device wherein the near-infrared ray-shielding anti-reflective material according to claim 1 is directly adhered to the surface of a display device by an adhesive layer.