JP2013130876A - Antiglare film and display using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antiglare film that has a structural body developing surface irregularity for achieving antiglare and high contrast and is superior in manufacture stability.SOLUTION: In an antiglare film laminating an antiglare layer on a translucent substrate, the antiglare layer comprises a co-continuous body structure, and the antiglare layer comprises at least a first phase and a second phase. The antiglare layer comprises fine particles, and the fine particles are unevenly distributed. The co-continuous body structure constituting the antiglare layer has a horizontal mesh size of 10-150 μm.

Description

  The present invention relates to an antiglare film having a co-continuous structure and a display device using the same.

Display devices such as liquid crystal displays (LCDs) and plasma displays (PDPs) are capable of visually recognizing images by reflecting indoor lighting such as fluorescent lamps, sunlight from windows, and operator shadows on the display surface. Sex is disturbed. Therefore, on these display surfaces, in order to improve the visibility of the image, the surface reflected light can be diffused, regular reflection of external light can be suppressed, and reflection of the external environment can be prevented (has antiglare properties). ) A functional film such as an antiglare film having a fine relief structure is provided on the outermost surface.

These functional films have an antiglare layer in which a fine concavo-convex structure is formed on a translucent substrate such as polyethylene terephthalate (hereinafter referred to as “PET”) or triacetyl cellulose (hereinafter referred to as “TAC”). One layer provided and one obtained by laminating a low refractive index layer on a light diffusing layer are generally manufactured and sold, and development of a functional film that provides a desired function by a combination of layer configurations is in progress.

When an anti-glare film is used on the outermost surface of the display, there is a problem in that when used in a bright room, a black display image becomes whitish due to light diffusion and the contrast is lowered. For this reason, an anti-glare film that can achieve high contrast even when anti-glare properties are reduced is demanded (high contrast AG). As a method for improving the contrast of the antiglare film, for example, optimizing the uneven shape of the surface can be mentioned.
As a method for forming an uneven shape on the surface of the anti-glare layer, after applying the anti-glare layer-forming coating material added with fine particles on the above-mentioned translucent substrate, the anti-glare layer forming material is irradiated with ultraviolet rays. In general, an antiglare layer is formed (see, for example, Patent Document 1).
There is also a method for achieving both antiglare properties and contrast by optimizing the particle diameter and surface irregularity shape (tilt angle) of the fine particles contained in the antiglare layer (see, for example, Patent Document 2).
Also, a method for forming anti-glare properties and contrast by forming surface irregularities without containing fine particles by using a plurality of resin components and forming a string-like structure using the layer separation characteristics of the resin components (For example, refer to Patent Document 3).

JP 2002-196117 A JP 2008-158536 A JP 2008-225195 A

As in Patent Document 1, when an antiglare layer containing fine particles is used, an antiglare property and an antiglare effect are exhibited. However, light scattering occurs at the interface between the fine particles contained in the anti-glare layer and the uneven surface portion of the anti-glare layer based on the shape of the fine particles, which makes it difficult to achieve high contrast.
As in Patent Document 2, even when the particle diameter of the fine particles and the inclination angle of the surface irregularities are optimized, there is a problem that the contrast is insufficient.
As in Patent Document 3, there is a problem in manufacturing stability with respect to a method of forming a string-like convex portion on the surface using phase separation of a plurality of resin components.

  Accordingly, an object of the present invention is to provide an antiglare film that has a structure that exhibits surface irregularities that can achieve antiglare properties and high contrast, and that is excellent in manufacturing stability. Moreover, it aims at providing the display apparatus which comprises the said anti-glare film.

(1) An antiglare film in which an antiglare layer is laminated on a translucent substrate, wherein the antiglare layer has a co-continuous structure, and the antiglare layer has at least a first phase. An antiglare film having a second phase, wherein the antiglare layer contains fine particles, and the fine particles are unevenly distributed.
(2) The anti-glare film according to (1), wherein the co-continuous structure constituting the anti-glare layer has a horizontal mesh size of 10 μm to 150 μm.
(3) The antiglare film as described in (1) or (2) above, wherein the antiglare layer contains a resin component and an inorganic component.
(4) The antiglare film as described in (3) above, wherein the inorganic component constituting the antiglare layer is a layered organic clay.
(5) A display device comprising the antiglare film described in any one of (1) to (4).

According to the present invention, surface irregularities can be formed by forming a co-continuous structure on the surface of the antiglare layer constituting the antiglare film, which exhibits good antiglare properties and high contrast and is stable in production. An excellent antiglare film and a display device using the antiglare film can be provided.

It is the schematic diagram showing the structure of the glare-proof layer, Comprising: (a) Plan view of sea-island structure, (b) Plan view of co-continuum structure, (c) Cross-sectional side view of sea-island structure, (d) Co-continuum It is a sectional side view of a structure. 2 is a laser micrograph showing a co-continuous structure on the surface of an antiglare layer prepared in Example 1. FIG. It is the SEM photograph image | photographed, after carbon-depositing the co-continuous structure of the glare-proof layer surface produced in Example 1. FIG. It is the photograph which performed mapping by EDS with the inorganic component (Si) about the co-continuous structure in the surface of the glare-proof layer produced in Example 1. FIG. 2 is a laser micrograph showing a sea-island structure on the surface of an antiglare layer produced in Comparative Example 1. 2 is an SEM photograph taken after carbon deposition of a sea-island structure on the surface of an antiglare layer prepared in Comparative Example 1. FIG.

The present invention will be described below. The antiglare layer constituting the present invention has a co-continuous structure. FIG. 1 is a diagram schematically showing the structure of the antiglare layer. (A) And (b) is the top view which showed the surface structure of the glare-proof layer, (c) And (d) is the sectional side view which showed the side sectional structure of the anti-glare film. (A) and (c) are conventional antiglare layers having a sea-island structure, and (b) and (d) are antiglare layers having a co-continuous structure in the present invention.
Since the anti-glare layer constituting the present invention only needs to have at least a first phase and a second phase, the anti-glare layer may have a third phase or a fourth phase. The number of phases constituting the antiglare layer is not limited.

As shown in FIGS. 1B and 1D, the antiglare layer constituting the present invention includes a first phase 1 containing a relatively large amount of the resin component and a first phase containing a relatively small amount of the resin component. It has at least two phases 2. This second phase 2 forms the convex portions of the surface irregularities of the antiglare layer 16 with the co-continuous structures 10 and 11.
The “co-continuous structure” refers to a gentle structure in which the slope (average slope angle described later) of the convex part of the surface irregularities is small as compared with the conventional antiglare layer. Conventionally, as shown in FIG. 1C, the conventional antiglare layer 15 has surface irregularities formed on the translucent substrate 20 by utilizing the shape of the fine particles 30 and 31. That is, the resin 40 present on the fine particles 30 and 31 rises based on the shape of the fine particles, and the resin 40 does not rise in the portions where the fine particles 30 and 31 do not exist, so that convex portions and concave portions are alternately formed. Therefore, the surface unevenness of the antiglare layer 15 has a large inclination.
On the other hand, since the second phase 2 forms a convex portion in the antiglare layer 16 of the present invention, surface irregularities can be formed in the antiglare layer 16 without containing fine particles. Therefore, compared to the conventional antiglare layer 15 shown in FIG. 1C, the antiglare layer 16 is less likely to be inclined as shown in FIG. That is, in the co-continuous structures 10 and 11 constituting the present invention, convex portions are continuously formed as compared with the conventional antiglare layer.
The antiglare layer constituting the present invention may have a co-continuous structure as a main structure, for example, even if there is a part where the co-continuous structure is partially interrupted, a sea island structure exists in part. You may do it. In addition, when the component which comprises the 2nd phase 2 is an inorganic component mentioned later, since an inorganic component aggregates gradually in the formation process of a glare-proof layer, the aggregate of an inorganic component forms a co-continuous structure. To do.

In the present invention, the size of the mesh in the co-continuous structure (the length of the co-continuous structures 10 and 11 in FIG. 1D) is 0.1 to 20 μm in the thickness direction of the coating film (antiglare layer). The range is preferable, and the range of 1 to 10 μm is more preferable. Moreover, the dimension of the mesh of the co-continuous structure is preferably within a range of 5 to 200 μm and more preferably within a range of 10 to 150 μm in the horizontal direction of the coating film (antiglare layer).

  The co-continuous structure can be confirmed by, for example, a laser microscope, SEM (scanning electron microscope), EDS (energy dispersive X-ray spectrometer), or optical microscope. Specifically, for example, FIG. 2 is a laser micrograph of the surface of the coating film (antiglare layer) of Example 1 to be described later, and since this photograph shows that a network structure is formed, antiglare It can be determined that the layer surface has a co-continuous structure.

When gold vapor deposition is performed on the co-continuous structure formed in the present invention and observed with an electron microscope, it can be seen that the portion forming the co-continuous structure forms a convex portion with surface irregularities.
In addition, after carbon deposition is performed on the co-continuous structure formed in the present invention, the state of element distribution on the carbon deposition surface can be roughly confirmed by observation with an electron microscope. This means that there are multiple elements on the carbon deposition surface. For example, the element with a large atomic number is displayed in white, and the element with a small atomic number is displayed in black. It depends on what you can do.
Furthermore, by performing mapping by EDS on the co-continuous structure formed in the present invention, elements present on the surface of the coating film (antiglare layer) and the cross section of the coating film (antiglare layer) are confirmed. be able to. This mapping by EDS can color-display a place where a lot of specific elements (for example, carbon atoms, oxygen atoms, silicon atoms, etc.) are distributed.
By using the above-mentioned electron microscope observation and mapping by EDS, it is possible to confirm the uneven structure of the co-continuum structure and the distribution of the specific element. Thereby, for example, it can be confirmed that many specific elements are distributed in the convex portions of the surface irregularities.

In the co-continuous structure, the first phase contains a relatively large amount of the resin component, and the second phase contains a relatively small amount of the resin component. That is, since the anti-glare layer constituting the present invention forms a co-continuous structure, each component constituting the anti-glare layer does not exist uniformly in the anti-glare layer but exists in an uneven state.

A more specific description will be given with reference to FIGS. 3 and 4 are diagrams in which the surface state of the antiglare layer prepared in Example 1 described later is photographed in the same field of view, and the antiglare layer is composed of a resin component and an inorganic component.
FIG. 3 is an SEM photograph in which carbon is deposited on the surface of the antiglare layer. The image displayed in the backscattered electron detector represents the backscattered electrons resulting from the components contained on the antiglare layer surface as an image.
The backscattered electrons depend on the atomic number, and can be displayed in different colors, for example, displaying a large atomic number in white and a small atomic weight in black. As shown in FIG. 3, each element in the antiglare layer does not exist uniformly in the horizontal direction of the surface, but a portion having a relatively large content of an element having a large atomic number and a portion having a relatively small content It is made up of.
FIG. 4 shows the mapping result of the inorganic component (Si) by EDS on the surface of the antiglare layer, and the amount of the Si component contained is shown by color shading. As shown in FIG. 4, the Si component also consists of a portion with a relatively high content and a portion with a relatively low content. In FIG. 4, the mapping result of silica (Si) is shown for specific illustration, but the mapping result of other inorganic component elements and resin (organic substance) components can also be shown. In the mapping result shown in FIG. 4, although it depends on detection conditions, it can be detected if the concentration of inorganic components such as silica is 0.2% by mass. That is, in the antiglare layer comprising the two phases of the first phase and the second phase, the first phase is a component different from 99.8% by mass or more of the resin component and less than 0.2% by mass of the resin component ( For example, the second phase is composed of a resin component of less than 99.8% by mass and a component different from the resin component of 0.2% by mass or more (for example, an inorganic component). is there.
In the portion where the content of the resin component is relatively large (the portion where the color in FIG. 3 is dark), the content of components other than the resin component is relatively small (first phase).
On the other hand, in the portion where the content of the resin component is relatively small (the light-colored portion in FIG. 3), the content of components other than the resin component is relatively large (second phase).
That is, the antiglare layer according to the present invention is a layer in which the first phase and the second phase exist in a complicated manner, and has a complementary relationship in which when one component decreases, the other component increases. It is.
3 and 4 show the content of each component in the horizontal direction of the surface of the antiglare layer, the content of each component in the vertical direction (thickness direction) of the antiglare layer is shown. Even in the case, a result showing a complementary relationship can be obtained.
Moreover, although the anti-glare layer using a resin component and an inorganic component is used in FIGS. 3 and 4, the co-continuous structure can be confirmed even when a plurality of types of resins are used. That is, even when an antiglare layer composed of a resin component and another resin component different from the resin component is used, by mapping the element components having different element ratios, the first phase and the second phase are changed. Can be distinguished.

<Method of forming a co-continuum structure>
The co-continuous structure of the present invention can be produced by utilizing convection associated with aggregation of inorganic components. Specifically, a solution containing a resin component, an inorganic component, and a solvent is applied onto a light-transmitting substrate, and is produced through a drying process that generates convection as the solvent evaporates, and a curing process that cures the dried coating film. it can. More specifically, it can be usually performed by coating the light-transmitting substrate with the solution and evaporating the solvent from the coating layer.
Although the detailed mechanism in the combined use of aggregation and convection has not been elucidated, it can be estimated as follows.
(1) By using convection and aggregation together, first, a convection domain is generated in the coated layer after coating.
(2) Next, aggregation occurs in each convection domain, and the structure of the aggregation grows with time, but the growth of aggregation stops at the convection domain wall.
(3) As a result, the space according to the size and arrangement of the convection domain is controlled, and a co-continuum structure associated with the aggregate structure is formed.
In the surface unevenness, the portion forming the surface protrusion forms a co-continuous structure. The surface unevenness associated with the co-continuous structure in the present invention has a smaller inclination angle than the surface unevenness created by using conventional fine particles, which is advantageous for exhibiting high contrast performance by reducing light diffusion on the surface. .
Hereinafter, materials that can be preferably used for each layer constituting the present invention will be described.

<Translucent substrate>
The translucent substrate according to the best mode is not particularly limited as long as it is translucent, and glass such as quartz glass and soda glass can be used, but PET, TAC, polyethylene naphthalate (PEN), poly Methyl methacrylate (PMMA), polycarbonate (PC), polyimide (PI), polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), cycloolefin copolymer (COC), norbornene-containing resin, Various resin films such as polyethersulfone, cellophane, and aromatic polyamide can be suitably used. In addition, when using for PDP and LCD, it is more preferable to use 1 type chosen from a PET film, a TAC film, and a norbornene-containing resin film.

The higher the transparency of these translucent substrates, the better. However, the total light transmittance (JIS K7105) is 80% or more, more preferably 90% or more. Further, the thickness of the translucent substrate is preferably thin from the viewpoint of weight reduction, but considering the productivity and handling property, the one in the range of 1 to 700 μm, preferably 25 to 250 μm is used. Is preferred.

The surface of the translucent substrate is treated with alkali treatment, corona treatment, plasma treatment, sputtering treatment and other primer treatments, primer coatings such as surfactants and silane coupling agents, and thin film dry coatings such as Si deposition. It is possible to improve the adhesion between the optical substrate and the antiglare layer and improve the physical strength and chemical resistance of the antiglare layer. Also, when another layer is provided between the translucent substrate and the antiglare layer, it is possible to improve the adhesion at the interface of each layer by the same method as described above, and to improve the physical strength and chemical resistance of the antiglare layer. Can be improved.

<Anti-glare layer>
The antiglare layer contains a resin component and an inorganic component, and is formed by curing the resin component. The antiglare layer may contain inorganic fine particles and organic fine particles as optional components.

(Resin component)
As the resin component constituting the antiglare layer, a resin having sufficient strength as a cured film and having transparency can be used without particular limitation. Examples of the resin component include a thermosetting resin, a thermoplastic resin, an ionizing radiation curable resin, and a two-component mixed resin. Among these, simple curing can be performed by electron beam or ultraviolet irradiation. An ionizing radiation curable resin that can be efficiently cured by a processing operation is preferable.

Examples of the ionizing radiation curable resin include monomers and oligomers having radical polymerizable functional groups such as acryloyl group, methacryloyl group, acryloyloxy group, and methacryloyloxy group, and cationic polymerizable functional groups such as epoxy group, vinyl ether group, and oxetane group. In addition, a composition in which prepolymers are used alone or appropriately mixed is used. Examples of monomers include methyl acrylate, methyl methacrylate, methoxy polyethylene methacrylate, cyclohexyl methacrylate, phenoxyethyl methacrylate, ethylene glycol dimethacrylate, dipentaerythritol hexaacrylate, trimethylolpropane trimethacrylate, pentaerythritol triacrylate, and the like. it can. As oligomers and prepolymers, polyester acrylate, polyurethane acrylate, polyfunctional urethane acrylate, epoxy acrylate, polyether acrylate, acrylate compounds such as alkit acrylate, melamine acrylate, silicone acrylate, unsaturated polyester, tetramethylene glycol diglycidyl ether, Epoxy compounds such as propylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, bisphenol A diglycidyl ether and various alicyclic epoxies, 3-ethyl-3-hydroxymethyloxetane, 1,4-bis {[((3- Oxeta such as ethyl-3-oxetanyl) methoxy] methyl} benzene, di [1-ethyl (3-oxetanyl)] methyl ether Mention may be made of the compound. These can be used alone or in combination.
Among these ionizing radiation curable resins, a polyfunctional monomer having 3 or more functional groups can increase the curing speed and improve the hardness of the cured product. Moreover, the hardness of a hardened | cured material, a softness | flexibility, etc. can be provided by using polyfunctional urethane acrylate.

An ionizing radiation curable fluorinated acrylate can be used as the ionizing radiation curable resin. Ionizing radiation curable fluorinated acrylates are ionizing radiation curable compared to other fluorinated acrylates, resulting in excellent chemical resistance due to cross-linking between molecules and sufficient antifouling even after saponification treatment. The effect of expressing sex is achieved. Examples of the ionizing radiation curable fluorinated acrylate include 2- (perfluorodecyl) ethyl methacrylate, 2- (perfluoro-7-methyloctyl) ethyl methacrylate, 3- (perfluoro-7-methyloctyl) -2- Hydroxypropyl methacrylate, 2- (perfluoro-9-methyldecyl) ethyl methacrylate, 3- (perfluoro-8-methyldecyl) -2-hydroxypropyl methacrylate, 3-perfluorooctyl-2-hydroxylpropyl acrylate, 2- (per Fluorodecyl) ethyl acrylate, 2- (perfluoro-9-methyldecyl) ethyl acrylate, pentadecafluorooctyl (meth) acrylate, unadecafluorohexyl (meth) acrylate, nonafluoropentyl (meth) ) Acrylate, heptafluorobutyl (meth) acrylate, octafluoropentyl (meth) acrylate, pentafluoropropyl (meth) acrylate, trifluoro (meth) acrylate, triisofluoroisopropyl (meth) acrylate, trifluoroethyl (meth) acrylate The following compounds (i) to (xxxi) can be used. The following compounds all show the case of acrylate, and any acryloyl group in the formula can be changed to a methacryloyl group.

These can be used alone or in combination. Of the fluorinated acrylates, a fluorinated alkyl group-containing urethane acrylate having a urethane bond is preferred from the viewpoint of wear resistance, elongation and flexibility of the cured product. Of the fluorinated acrylates, polyfunctional fluorinated acrylates are preferred. Here, the polyfunctional fluorinated acrylate means one having 2 or more (preferably 3 or more, more preferably 4 or more) (meth) acryloyloxy groups.

The ionizing radiation curable resin can be cured by irradiation with an electron beam as it is, but in the case of curing by ultraviolet irradiation, it is necessary to add a photopolymerization initiator. In addition, as a radiation used, any of an ultraviolet-ray, visible light, infrared rays, and an electron beam may be sufficient. Further, these radiations may be polarized or non-polarized.
Photopolymerization initiators include radical polymerization initiators such as acetophenone, benzophenone, thioxanthone, benzoin, and benzoin methyl ether, and cationic polymerization starts such as aromatic diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, and metallocene compounds. The agents can be used alone or in appropriate combination.

Moreover, additives, such as a leveling agent and an antistatic agent, can be contained in ionizing radiation curable resin. The leveling agent has a function of uniforming the tension on the surface of the coating film and correcting defects before forming the coating film, and a substance having a lower interfacial tension and surface tension than the ionizing radiation curable resin is used.

The amount of the resin component such as ionizing radiation curable resin is 50% by mass or more and preferably 60% by mass or more with respect to the total mass of the solid component in the resin composition constituting the antiglare layer. Although an upper limit is not specifically limited, For example, it is 99.6 mass%. If it is less than 50% by mass, there is a problem that sufficient hardness cannot be obtained.
The solid content of the resin component such as ionizing radiation curable resin includes all solid content other than the inorganic component described later, and only the solid content of the resin component such as ionizing radiation curable resin. In addition, the solid content of other optional components is included.

(Inorganic component)
The inorganic component used in the present invention is not particularly limited as long as it is contained in the antiglare layer and aggregates during film formation to form a co-continuous structure. Examples of the inorganic component include metal oxide sols such as silica sol and zirconia sol, aerosil, swellable clay, and layered organic clay. Among these inorganic components, layered organoclay is preferable because it can stably form a co-continuous structure. The reason why the layered organic clay can stably form a co-continuous structure is that the layered organic clay is highly compatible with the resin component (organic component) and also has cohesiveness. A structure in which two phases are complicated can be easily formed, and a co-continuous structure can be easily formed at the time of film formation.
In the present invention, the layered organic clay refers to an organic onium ion introduced between the layers of the swellable clay. The layered organic clay has low dispersibility in a specific solvent, and when a layered organic clay and a solvent having specific properties are used as a coating for forming an antiglare layer, fine particles are added to the antiglare layer by selecting the solvent. Without inclusion, an antiglare layer having a surface irregularity is formed by forming a co-continuum structure.

Swellable clay Swellable clay is not limited as long as it has a cation exchange capacity and swells by taking water between the layers of the swellable clay. And derivatives). Moreover, the mixture of a natural product and a synthetic product may be sufficient.
Examples of the swellable clay include mica, synthetic mica, vermiculite, montmorillonite, iron montmorillonite, beidellite, saponite, hectorite, stevensite, nontronite, magadiite, isallite, kanemite, layered titanic acid, smectite, and synthetic smectite. Etc. These swellable clays may be used alone or in combination.

Organic onium ion The organic onium ion is not limited as long as it can be organicized by utilizing the cation exchange property of the swellable clay.
Examples of onium ions include quaternary ammonium salts such as dimethyl distearyl ammonium salt and trimethyl stearyl ammonium salt, ammonium salts having a benzyl group or a polyoxyethylene group, phosphonium salts, pyridinium salts, and imidazolium salts. Ions consisting of can be used. Examples of the salt include salts with anions such as Cl ⁻ , Br ⁻ , NO ₃ ⁻ , OH ⁻ , and CH ₃ COO ⁻ . As the salt, a quaternary ammonium salt is preferably used.
The functional group of the organic onium ion is not limited, but it is preferable to use a material containing any one of an alkyl group, a benzyl group, a polyoxypropylene group, and a phenyl group because antiglare properties are easily exhibited.

The preferred range of the alkyl group is 1 to 30 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, octadecyl, etc. Is mentioned.

The preferable range of n in the polyoxypropylene group [(CH ₂ CH (CH ₃ ) O) _n H or (CH ₂ CH ₂ CH ₂ O) _n H] is 1 to 50, more preferably 5 to 50. The more the number of moles added, the better the dispersibility in the organic solvent, but if it is too much, the product will become sticky, so if the emphasis is placed on the dispersibility in the solvent, the number of n is 20-50 are more preferable. Moreover, when the number of n is 5-20, a product is non-adhesive and the grindability is excellent. Further, from the viewpoint of dispersibility and handling, the total number of n in the quaternary ammonium is preferably 5-50.

Specific examples of the quaternary ammonium salt include tetraalkylammonium chloride, tetraalkylammonium bromide, polyoxypropylene / trialkylammonium chloride, polyoxypropylene / trialkylammonium bromide, di (polyoxypropylene) / dialkylammonium. Examples thereof include chloride, di (polyoxypropylene) · dialkylammonium bromide, tri (polyoxypropylene) · alkylammonium chloride, tri (polyoxypropylene) · alkylammonium bromide and the like.

In the quaternary ammonium ion of the general formula (I), R ¹ is preferably a methyl group or a benzyl group. R ² is preferably an alkyl group having 1 to 12 carbon atoms, and particularly preferably an alkyl group having 1 to 4 carbon atoms. R ³ is preferably an alkyl group having 1 to 25 carbon atoms. R ⁴ is preferably an alkyl group having 1 to 25 carbon atoms, a (CH ₂ CH (CH ₃ ) O) _n H group or a (CH ₂ CH ₂ CH ₂ O) _n H group. n is preferably 5 to 50.

The compounding amount of the layered organic clay is 0.1 to 10% by mass and particularly preferably 0.2 to 5% by mass with respect to the total mass of the solid components in the resin composition. When the blending amount of the layered organic clay is 0.1% by mass, a sufficient number of surface irregularities are not formed and the antiglare property is insufficient. When the blending amount of the layered organic clay exceeds 10% by mass, the number of surface irregularities increases and there is a problem that visibility is impaired.

As a solvent, it is preferable to contain the 1st solvent and the 2nd solvent as a solvent which forms the surface unevenness | corrugation for obtaining anti-glare property.
By adding the first solvent and the second solvent to the resin composition of the present invention, the antiglare layer-forming coating material of the present invention can be obtained. Since the antiglare layer-forming coating material of the present invention contains the first solvent and the second solvent, fine particles that have been considered to be essential for creating the surface uneven shape of the antiglare layer are added. Even if it does not, the surface uneven | corrugated shape of an anti-glare layer can be created.

A 1st solvent means what can be disperse | distributed in the state with transparency, without producing turbidity substantially in layered organic clay. “Substantially no turbidity” includes not turbidity at all, but also includes those that can be regarded as not turbid. Specifically, the first solvent is one having a haze value of 10% or less of a mixed solution obtained by adding 1000 parts by mass of the first solvent to 100 parts by mass of the layered organic clay. The haze value of the mixed solution obtained by adding and mixing the first solvent is preferably 8% or less, and more preferably 6% or less. In addition, the lower limit value of the haze value of the liquid mixture is not particularly limited, but is 0.1%, for example.
As the first solvent, for example, a so-called small-polar solvent (nonpolar solvent) can be used. This is because the layered organoclay is organically treated and thus easily dispersed by the solvent. The first solvent that can be used differs depending on the type of layered organic clay, but for example, when synthetic smectite is used as the layered organic clay, an aromatic solvent such as benzene, toluene, xylene, etc. should be used as the first solvent. Can do. These first solvents may be used alone or in combination.

A 2nd solvent means what can be disperse | distributed in the state which made the layered organic clay turbid. Specifically, the second solvent is one having a haze value of 30% or more of a mixed solution obtained by adding 1000 parts by mass of the second solvent to 100 parts by mass of the layered organic clay. The haze value of the mixed solution obtained by adding the second solvent and mixing is preferably 40% or more, and more preferably 50% or more. In addition, although the upper limit of the haze value of a liquid mixture is not specifically limited, For example, it is 99%.
As the second solvent, for example, a so-called polar solvent can be used. This is because the layered organoclay has been organically treated and thus is difficult to disperse by the solvent. The second solvent that can be used differs depending on the type of layered organic clay, but for example, when synthetic smectite is used as the layered organic clay, the second solvent is water, methanol, ethanol, propanol, isopropanol, methyl ethyl ketone, isopropyl alcohol, etc. Can be used. These second solvents may be used alone or in combination.

Here, it is preferable to use a mixture of the first solvent and the second solvent because surface irregularities for obtaining antiglare properties can be easily formed. The mixing ratio of the first solvent and the second solvent is preferably a mass ratio in the range of 10:90 to 90:10 because surface irregularities for obtaining antiglare properties can be easily formed. The mixing ratio of the first solvent and the second solvent is preferably in the range of 15:85 to 85:15, and more preferably in the range of 20:80 to 80:20, by mass ratio. If the first solvent is less than 10 parts by mass, there is a problem in that appearance defects due to undissolved substances occur. If the first solvent exceeds 90 parts by mass, there is a problem that surface irregularities for obtaining sufficient antiglare property cannot be obtained.

Moreover, the compounding quantity of a resin composition and a solvent (what combined the 1st solvent and the 2nd solvent) should just be the range of 70: 30-30: 70 by mass ratio.
When the resin composition is less than 30 parts by mass, there are problems that drying unevenness occurs and the appearance is deteriorated, the number of surface irregularities is increased, and visibility is impaired.
If the resin composition exceeds 70 parts by mass, the solubility of the solid content tends to be impaired, so that there is a problem that the film cannot be formed.
(Fine particles)

  Translucent fine particles can be added to the resin composition. An anti-glare layer-forming coating material obtained by adding a solvent to the resin composition can be applied to a translucent substrate, and then the anti-glare layer-forming coating material can be cured to form an anti-glare layer. By adding translucent fine particles to the resin composition, it becomes easy to adjust the shape and number of surface irregularities of the antiglare layer.

As described above, the antiglare layer of the present invention has an uneven shape on the surface of the antiglare layer without adding translucent fine particles. When the antiglare layer is formed by adding fine particles to the antiglare layer-forming coating material, the fine particles are unevenly distributed at the edge of the bicontinuous structure and the cocontinuous structure (the concave portion of the antiglare layer).
The reason why the fine particles are unevenly distributed at the edge of the co-continuum is considered as follows.
The fine particles begin to be unevenly distributed at the edge of the aggregate structure at the same time as the inorganic material component forms an aggregate structure in the convection domain in the coating layer after coating. By the drying process, the fine particles are fixed when the fluidity of the coating liquid is lost, and finally distributed unevenly at the edge of the co-continuous structure and the co-continuous structure.
By adding fine particles, there is an advantage that the shape of the surface irregularities formed by the co-continuum structure can be adjusted. By adjusting the shape of the surface of the antiglare layer, the scratch resistance and surface hardness of the surface of the antiglare layer can be improved.

As the translucent fine particles, an organic translucent resin made of acrylic resin, polystyrene resin, styrene-acrylic copolymer, polyethylene resin, epoxy resin, silicone resin, polyvinylidene fluoride, polyfluoroethylene resin, etc. Fine inorganic particles such as fine particles, silica, alumina, titania, zirconia, calcium oxide, tin oxide, indium oxide, and antimony oxide can be used. The refractive index of the light-transmitting fine particles is preferably 1.40 to 1.75. When the refractive index is less than 1.40 or greater than 1.75, the difference in refractive index from the light-transmitting substrate or the resin matrix is large. As a result, the total light transmittance decreases. Further, the difference in refractive index between the translucent fine particles and the resin is preferably 0.2 or less. The average particle diameter of the translucent fine particles is preferably in the range of 0.3 to 10 μm, and more preferably 0.5 to 5 μm.
When the particle size is smaller than 0.3 μm, the antiglare property is lowered. When the particle size is larger than 10 μm, it is not preferable because glare occurs and the surface unevenness becomes too large and the surface becomes whitish. In addition, the ratio of the light-transmitting fine particles contained in the resin is not particularly limited, but it is 0.1 to 20 parts by mass with respect to 100 parts by mass of the resin composition. It is preferable for satisfaction, and it is easy to control the fine uneven shape and haze value on the surface of the antiglare layer. Here, “refractive index” refers to a measured value according to JIS K-7142. Further, “average particle diameter” refers to an average value of the diameters of 100 particles actually measured with an electron microscope.

Antistatic agent (conductive agent)
The antiglare layer of the present invention may contain an antistatic agent (conductive agent). Addition of the conductive agent can effectively prevent dust adhesion on the surface of the optical laminate. Specific examples of the antistatic agent (conductive agent) include quaternary ammonium salts, pyridinium salts, various cationic compounds having a cationic group such as first to third amino groups, sulfonate groups, sulfate ester bases, Anionic compounds having an anionic group such as phosphate ester base and phosphonate base, amphoteric compounds such as amino acid series and amino sulfate ester series, nonionic compounds such as amino alcohol series, glycerin series and polyethylene glycol series, tin and titanium And metal chelate compounds such as acetylacetonate salts thereof, and compounds obtained by increasing the molecular weight of the compounds listed above. In addition, a monomer or oligomer having a tertiary amino group, a quaternary ammonium group, or a metal chelate portion and polymerizable by ionizing radiation, or an organometallic compound such as a coupling agent having a functional group, etc. Polymerizable compounds can also be used as antistatic agents.

Moreover, electroconductive fine particles are mentioned. Specific examples of the conductive fine particles include those made of a metal oxide. Examples of such metal oxides include ZnO, CeO ₂ , Sb ₂ O ₂ , SnO ₂ , indium tin oxide often abbreviated as ITO, In ₂ O ₃ , Al ₂ O ₃ , antimony-doped tin oxide (abbreviation) ATO), aluminum-doped zinc oxide (abbreviation: AZO), and the like. The fine particles refer to those having a so-called submicron size of 1 micron or less, and preferably those having an average particle size of 0.1 nm to 0.1 μm.

Another specific example of the antistatic agent (conductive agent) is a conductive polymer. The material is not particularly limited. For example, aliphatic conjugated polyacetylene, polyacene, polyazulene, aromatic conjugated polyphenylene, heterocyclic conjugated polypyrrole, polythiophene, polyisothianaphthene, heteroatom-containing conjugated system. Polyaniline, polythienylene vinylene, mixed conjugated poly (phenylene vinylene), double-chain conjugated system having a plurality of conjugated chains in the molecule, derivatives of these conductive polymers, and conjugates thereof Examples thereof include at least one selected from the group consisting of conductive composites that are polymers obtained by grafting or block-copolymerizing polymer chains to saturated polymers. Among these, it is more preferable to use an organic antistatic agent such as polythiophene, polyaniline, polypyrrole. By using the above-mentioned organic antistatic agent, it is possible to exhibit excellent antistatic performance and at the same time increase the total light transmittance of the optical laminate and reduce the haze value. An anion such as an organic sulfonic acid or iron chloride can be added as a dopant (electron donor) for the purpose of improving conductivity and improving antistatic performance. In view of the effect of dopant addition, polythiophene is particularly preferable because of its high transparency and antistatic properties. As the polythiophene, oligothiophene can also be preferably used. The derivative is not particularly limited, and examples thereof include polyphenylacetylene, polydiacetylene alkyl group-substituted products, and the like.

<Anti-glare film>
After coating the antiglare layer-forming paint containing the above-mentioned constituent components on the light-transmitting substrate, the coating for forming the antiglare layer is cured by irradiation with heat or ionizing radiation (for example, electron beam or ultraviolet irradiation). By forming the antiglare layer, the antiglare film of the present invention can be obtained.
The antiglare layer may be formed on one side or both sides of the translucent substrate.

Moreover, you may have another layer on the opposite surface of an anti-glare layer between an anti-glare layer and a translucent base | substrate, and you may have another layer on an anti-glare layer. Examples of the other layers include a polarizing layer, a light diffusion layer, a low reflection layer, an antifouling layer, an antistatic layer, an ultraviolet / near infrared (NIR) absorption layer, a neon cut layer, and an electromagnetic wave shielding layer. Can do.

The thickness of the antiglare layer is preferably in the range of 1.0 to 12.0 μm, more preferably in the range of 2.0 to 11.0 μm, and still more preferably in the range of 3.0 to 10.0 μm. is there. When the antiglare layer is thinner than 1.0 μm, curing failure due to oxygen inhibition occurs at the time of ultraviolet curing, and the wear resistance of the antiglare layer tends to deteriorate. When the anti-glare layer is thicker than 12.0 μm, curling due to curing shrinkage of the anti-glare layer, generation of micro cracks, deterioration of adhesion with the translucent substrate, and further reduction of light transmission may occur. End up. And it becomes a cause of the cost increase by the increase in the amount of required coating materials accompanying the increase in film thickness.

In the antiglare film of the present invention, the image sharpness is preferably in the range of 5.0 to 80.0 (value measured using a 0.5 mm optical comb in accordance with JIS K7105), and more preferably 20.0 to 75.0. . If the image clarity is less than 5.0, the contrast deteriorates, and if it exceeds 80.0, the antiglare property deteriorates, so that it is not suitable for the antiglare film used on the display surface.

The antiglare film of the present invention has a fine uneven shape on the surface of the antiglare layer. Here, the fine concavo-convex shape preferably has an average inclination angle calculated from an average inclination obtained according to ASME 95 in the range of 0.2 to 1.4, more preferably 0.25 to 1.2. More preferably, it is 0.25 to 1.0. When the average inclination angle is less than 0.2, the antiglare property is deteriorated, and when the average inclination angle exceeds 1.4, the contrast is deteriorated, so that the antiglare film used for the display surface is not suitable.

The antiglare film of the present invention preferably has a surface roughness Ra of 0.05 to 0.2 μm, more preferably 0.05 to 0.15 μm, as a fine uneven shape of the antiglare layer. Preferably, it is 0.05-0.10 micrometer. When the surface roughness Ra is less than 0.05 μm, the antiglare property of the antiglare film becomes insufficient. When the surface roughness Ra exceeds 0.2 μm, the contrast of the antiglare film is deteriorated.

<Method for producing antiglare film>
As a method of applying the antiglare layer-forming coating material on the translucent substrate, a normal coating method or printing method is applied. Specifically, air doctor coating, bar coating, blade coating, knife coating, reverse coating, transfer roll coating, gravure roll coating, kiss coating, cast coating, spray coating, slot orifice coating, calendar coating, dam coating, dip coating Coating such as die coating, intaglio printing such as gravure printing, printing such as stencil printing such as screen printing, and the like can be used.

EXAMPLES Hereinafter, although this invention is demonstrated using an Example, this invention is not restrict | limited to these.

(Production Example 1 Production of synthetic smectite)
Put 4L of water in a 10L beaker, dissolve 860g of No. 3 water glass (SiO ₂ 28%, Na ₂ O 9%, molar ratio 3.22), add 95% sulfuric acid 162g at a time with stirring and add silicate. Obtain a solution. Next, 560 g of MgCl ₂ · 6H ₂ O primary reagent (purity 98%) was dissolved in 1 L of water, and this was added to the silicic acid solution to prepare a homogeneous mixed solution. This was dropwise added to 3.6 L of 2N NaOH solution over 5 minutes with stirring. The obtained reaction precipitate was immediately filtered by a cross flow method (cross flow filter (ceramic membrane filter: pore size 2 μm, tubular type, filtration area 400 cm ² ), manufactured by NGK Co., Ltd., pressure: 2 kg / cm ² , filter cloth: Tetoron 1310] and sufficiently washed with water, and then a solution consisting of 200 ml of water and 14.5 g of Li (OH) · H ₂ O was added to form a slurry. This was transferred to an autoclave and subjected to a hydrothermal reaction at 41 kg / cm ² and 250 ° C. for 3 hours. After cooling, the reaction product was taken out, dried at 80 ° C., and pulverized to obtain a synthetic smectite represented by the following formula. When this synthetic smectite was analyzed, the following composition was obtained. Na _0.4 Mg _2.6 Li _0.4 Si ₄ O ₁₀ (OH) _{2 The} cation exchange capacity measured by the methylene blue adsorption method was 110 meq / 100 g.

(Production Example 2 Production of Synthetic Smectite-Based Layered Organoclay A)
20 g of the synthetic smectite synthesized in Production Example 1 was dispersed in 1000 ml of tap water to obtain a suspension. 500 ml of an aqueous solution in which a quaternary ammonium salt of the following formula (II) (containing 98%) corresponding to 1.00 times the cation exchange capacity of the synthetic smectite is dissolved, is added to the synthetic smectite suspension; The reaction was allowed to proceed for 2 hours at room temperature with stirring. The product was subjected to solid-liquid separation and washing to remove by-product salts, and then dried to obtain a synthetic smectite-based layered organic clay A.

(Production Example 3) Synthesis of fluorinated acrylate solution B In a 500 ml reaction flask, pentaerythritol triatriol was added to a 100 ml MIBK (methyl isobutyl ketone) solution of 22.2 g (0.1 mol) of isophorone diisocyanate while air bubbling. A solution of 59.6 g (0.20 mol) of acrylate in 50 ml of MIBK was added dropwise at 25 ° C. After completion of dropping, 0.3 g of dibutyltin dilaurate was added, and the mixture was further stirred with heating at 70 ° C. for 4 hours. After completion of the reaction, the reaction solution was washed with 100 ml of 5% hydrochloric acid. After separating the organic layer, the solvent was distilled off under reduced pressure at 40 ° C. or less to obtain 80.5 g of a colorless transparent viscous liquid urethane acrylate. Into a 200 ml reaction flask, 40.8 g (0.05 mol) of the prepared urethane acrylate, 64.2 g (0.15 mol) of perfluoroheptylethyl mercaptan, and 60 g of MIBK were added to make uniform. To this mixed solution, 1.0 g of triethylamine was gradually added at 25 ° C. After the addition was completed, the mixture was further stirred at 50 ° C. for 3 hours. After completion of the reaction, triethylamine is distilled off under reduced pressure using an evaporator under conditions of 50 ° C. or lower, and further dried with a vacuum pump, thereby containing a fluorinated alkyl group-containing urethane acrylate represented by Structural Formula 1, and an acryloyl group. A product B solution comprising a mixture further containing a compound different from the structural formula 1 in the position of the addition reaction between and perfluoroheptylethyl mercaptan was obtained.

A coating for forming an antiglare layer obtained by stirring the predetermined mixture described in Table 1 containing the layered organic clay A with a disper for 30 minutes is a transparent film having a film thickness of 80 μm and a total light transmittance of 92%. The substrate was coated on one side of TAC (Fuji Film Co., Ltd .; TD80UL) by a roll coating method (line speed; 20 m / min), pre-dried at 30-50 ° C. for 20 seconds, and then dried at 100 ° C. for 1 minute. Then, the coating film is cured by performing ultraviolet irradiation (lamp; condensing high-pressure mercury lamp, lamp output: 120 W / cm, number of lamps: 4 lamps, irradiation distance: 20 cm) in a nitrogen atmosphere (replacement with nitrogen gas). It was. In this way, an antiglare film of Example 1 having an antiglare layer having a thickness of 5.5 μm was obtained. Here, a laser micrograph of the obtained antiglare film is shown in FIG. 2, an SEM result is shown in FIG. 3, and an EDS result is shown in FIG. From these results, it was confirmed that the antiglare layer constituting the obtained antiglare film had at least a first phase and a second phase and formed a co-continuum structure.

An antiglare film of Example 2 having an antiglare layer with a thickness of 6.5 μm was obtained in the same manner as in Example 1 except that the antiglare layer-forming coating material was changed to the predetermined mixed solution shown in Table 1. . From the results of laser microscope, SEM, and EDS, it was confirmed that the antiglare layer constituting the obtained laminate had at least a first phase and a second phase and formed a co-continuum structure.

It has an antiglare layer having a thickness of 5.5 μm in the same manner as in Example 1 except that it contains the fluorinated acrylate B liquid and the coating material for forming the antiglare layer is changed to the predetermined mixed liquid shown in Table 1. An antiglare film of Example 3 was obtained. From the results of laser microscope, SEM, and EDS, it was confirmed that the antiglare layer constituting the obtained antiglare film had at least a first phase and a second phase and formed a co-continuum structure. .

[Comparative Example 1]
An antiglare film of Comparative Example 1 having an antiglare layer having a thickness of 3.5 μm was obtained in the same manner as in Example 1 except that the antiglare layer-forming coating material was changed to the predetermined mixed solution shown in Table 1. . Here, the laser microscope photograph result of the obtained laminate is shown in FIG. 5, and the SEM result is shown in FIG. It was confirmed that the antiglare layer constituting the obtained antiglare film formed a sea-island structure that did not form a co-continuous structure and was completely phase-separated.

The materials used in the above examples and comparative examples are summarized in Table 1.

The laser micrograph, SEM and EDS were taken under the following conditions.
Laser microscope photograph The state of the coating layer surface of the laminate obtained in Examples and Comparative Examples was observed with a laser microscope. Observation was performed after gold deposition on the surface of the coating layer. The conditions for observation with a laser microscope are shown below.
Analytical instrument: EXT OLS3000 (Olympus)
Pretreatment device: Au (gold) coating: 10 nm SC-701AT modified (manufactured by Sanyu Electronics Co., Ltd.)
Measurement conditions: Image detector: Confocal analysis item: Image analysis: Level difference

SEM
The state of the coating layer surface of the laminates obtained in Examples and Comparative Examples, and information on contained elements were observed by SEM. Observation was performed after depositing gold or carbon on the surface of the coating layer. The conditions for SEM observation are shown below.
Analytical instrument: JSM-6460LV (manufactured by JEOL Ltd.)
Pretreatment device: C (carbon) coating: 45 nm SC-701C (manufactured by Sanyu Electronics Co., Ltd.)
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Au (gold) coating: 10nm SC-701AT modified (manufactured by Sanyu Electronics Co., Ltd.)
SEM condition: Acceleration voltage: 20KV
Irradiation current: 0.15 nA
Degree of vacuum: High vacuum
Image detector: backscattered electron detector
Sample tilt: 0 degree

EDS
Information on the elements contained in the laminates obtained in Examples and Comparative Examples was observed by EDS. Observation was performed after carbon deposition on the coating layer surface. The conditions for EDS observation are shown below.
Analytical instrument: JSM-6460LV (manufactured by JEOL Ltd.)
Pretreatment device: C (carbon) coating: 45 nm SC-701C (manufactured by Sanyu Electronics Co., Ltd.)
EDS condition: Acceleration voltage: 20KV
Irradiation current: 0.15 nA
Degree of vacuum: High vacuum
Image detector: backscattered electron detector
MAP resolution: 128 x 96 pixels
Image resolution: 1024 x 768 pixels

<Evaluation method>
Next, the following items were evaluated for the antiglare films of Examples and Comparative Examples.

(Total light transmittance)
According to JIS K7105, it measured using the haze meter (brand name: NDH2000, Nippon Denshoku Co., Ltd. make).

(Haze value)
The haze value was measured according to JIS K7105 using a haze meter (trade name: NDH2000, manufactured by Nippon Denshoku).

(Surface roughness)
The surface roughness Ra was measured according to JIS B0601-1994 using the surface roughness measuring instrument.

(Average tilt angle)
The average inclination angle was determined according to ASME95 using a surface roughness measuring instrument (trade name: Surfcorder SE1700α, manufactured by Kosaka Laboratories), and the average inclination angle was calculated according to the following formula.
Average inclination angle = tan ⁻¹ (average inclination)

(Image clarity)
According to JIS K7105, a measuring device (trade name: ICM-1DP, manufactured by Suga Test Instruments Co., Ltd.) was used, and the measuring device was set to a transmission mode, and measurement was performed at an optical comb width of 0.5 mm.

(Anti-glare)
The antiglare property was set to ○ when the value of image clarity was 0 to 80, and × when 81 to 100.

(Light room contrast)
The bright room contrast is pasted on the screen surface of the liquid crystal display (trade name: LC-37GX1W, manufactured by Sharp Corporation) through the colorless and transparent adhesive layer on the surface opposite to the antiglare film forming surface of Examples and Comparative Examples, The illuminance on the surface of the liquid crystal display is set to 200 lux with a fluorescent lamp (trade name: HH4125GL, manufactured by National Corporation) from the direction 60 ° above the front of the liquid crystal display screen, and then the liquid crystal display is displayed in white and black. The luminance at the time was measured with a color luminance meter (trade name: BM-5A, manufactured by Topcon Corporation), and the resulting luminance when displaying black (cd / m ² ) and luminance when displaying white (cd / m ² ) When the value calculated by the following formula is 800 or less, ×, and when it is 801 or more, it is evaluated as ◯.
Contrast = Brightness of white display / Brightness of black display

(Dark room contrast)
The dark room contrast is bonded to the screen surface of a liquid crystal display (trade name: LC-37GX1W, manufactured by Sharp Corporation) through a colorless and transparent adhesive layer on the surface opposite to the antiglare film forming surface of Examples and Comparative Examples. The luminance when the liquid crystal display was set to white display and black display under the conditions was measured with a color luminance meter (trade name: BM-5A, manufactured by Topcon Corporation), and the resulting luminance during black display (cd / m ²⁾ ) And the brightness (cd / m ² ) when white is displayed by the following formula: x when 900 to 1100, Δ when 1101 to 1300, and ○ when 1301 to 1500.
Contrast = Brightness of white display / Brightness of black display

The obtained results are shown in Table 2.

As described above, according to the present invention, it is possible to provide an antiglare film excellent in manufacturing stability and a display device using the antiglare film while achieving good antiglare properties and high contrast.

DESCRIPTION OF SYMBOLS 1 1st phase 2 2nd phase 10, 11 Co-continuous structure 15, 16 Anti-glare layer 20 Translucent base | substrate 30, 31 Fine particle 40 Resin

Claims (5)

  An antiglare film in which an antiglare layer is laminated on a translucent substrate, the antiglare layer having a co-continuous structure, and the antiglare layer includes at least a first phase and a second phase. An antiglare film having a phase, wherein the antiglare layer contains fine particles, and the fine particles are unevenly distributed.   2. The antiglare film according to claim 1, wherein the co-continuous structure constituting the antiglare layer has a horizontal mesh size of 10 μm to 150 μm.   The antiglare film according to claim 1 or 2, wherein the antiglare layer contains a resin component and an inorganic component.   The antiglare film according to claim 3, wherein the inorganic component constituting the antiglare layer is a layered organic clay.   A display device comprising the antiglare film according to any one of claims 1 to 4.