TW201606356A - Anti-glare-layer substrate and article - Google Patents

Abstract

Provided are: an anti-glare-layer substrate provided with an anti-glare layer that is excellent in terms of the balance among an antiglare effect, a transmittance improvement effect, and mechanical strength; and an article using the anti-glare-layer substrate. An anti-glare-layer substrate is provided with a transparent substrate and an anti-glare layer and is characterized in that the refractive index of the anti-glare layer is 1.25-1.45, that an arithmetic mean roughness (Ra) of a surface of the anti-glare layer is 0.05-0.25 [mu]m, and that the anti-glare layer contains solid silica particles in the form of chains.

Description

Substrate and article with anti-glare layer Field of invention

The present invention relates to a substrate with an anti-glare layer and articles using the same.

Background of the invention

In image display devices (such as liquid crystal displays, organic EL displays, plasma displays, etc.) that are placed on various devices (such as televisions, personal computers, smart phones, mobile phones, etc.), indoor lighting (such as fluorescent lights, etc.) Once the external light such as sunlight is mapped to the display surface, the visibility may be lowered due to the reflected image.

In order to suppress the mapping of external light, an antiglare treatment is generally performed on the transparent substrate constituting the display surface of the image display device. In the case of anti-glare treatment, it is known to form a process of forming irregularities on the light incident surface of a transparent substrate. However, in this process, if the unevenness is increased (that is, the surface is roughened) in order to improve the antiglare effect, there is a problem that the image resolution is lowered, and the haze is increased to lower the image contrast.

In view of the foregoing problems, there is a proposal to apply a coating liquid containing a hydrooxane of alkoxysilane and a hollow SiO ₂ microparticle to a substrate by a spray method to produce a refractive index of 1.45 or less and a surface roughness of 0.04 to 0.17 μm. A method of an article of an anti-glare layer (refer to Patent Document 1). Since the antiglare layer described in Patent Document 1 has a low refractive index, it has an excellent antiglare effect even if the surface roughness is small.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2009-058640

Summary of invention

However, Patent Document 1 does not consider the improvement in the transmittance of the substrate and the sufficient anti-glare effect.

The inventors of the present invention have studied the portion of the method of Patent Document 1 in order to increase the content of the hollow SiO ₂ microparticles in order to obtain the effect of improving the transmittance, and to reduce the refractive index of the antiglare layer, and found that once the content of the hollow SiO ₂ microparticles is increased. There is a problem of reducing the mechanical strength such as abrasion resistance. Further, the hollow SiO ₂ fine particles are high-priced materials as low-refractive-index materials, and an increase in the content causes an increase in material cost.

An object of the present invention is to provide a substrate with an anti-glare layer and an article for use thereof, which has an anti-glare effect, an effect of improving the transmittance, and an anti-glare layer excellent in mechanical strength balance.

The present invention has the following aspects.

[1] A substrate with an anti-glare layer, comprising: a transparent substrate; and an anti-glare layer formed on the transparent substrate, wherein: The antiglare layer has a refractive index of 1.25 to 1.45, an arithmetic mean roughness Ra of the surface of the antiglare layer is 0.05 to 0.25 μm, and the antiglare layer contains chain solid cerium oxide particles.

[2] The substrate with an anti-glare layer according to [1], wherein the content of the chain-shaped solid cerium oxide particles in the anti-glare layer is 50 to 80% by mass based on the total mass of the anti-glare layer.

[3] The substrate with an anti-glare layer of [1] or [2], wherein the chain-shaped solid ceria particles have an average agglomerated particle diameter of 5 to 300 nm.

[4] The substrate with an anti-glare layer according to any one of [1] to [3] wherein the anti-glare layer is a layer formed of a coating liquid containing the aforementioned chain-shaped solid ceria. Particles, cerium oxide matrix precursors and liquid media.

[5] The substrate with an anti-glare layer according to [4], wherein the coating liquid further contains a terpene compound.

[6] An article comprising the substrate with an anti-glare layer according to any one of [1] to [5].

According to the present invention, a substrate with an anti-glare layer and an article using the same can be provided, and the substrate with the anti-glare layer has an anti-glare layer excellent in anti-glare effect, transmittance improvement effect, and mechanical strength balance.

10‧‧‧Substrate with anti-glare layer

12‧‧‧Transparent substrate

14‧‧‧Anti-glare layer

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view schematically showing an embodiment of a substrate to which an antiglare layer of the present invention is attached.

Form for implementing the invention

[Substrate with anti-glare layer]

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view schematically showing an embodiment of a substrate with an antiglare (hereinafter abbreviated as AG) layer of the present invention.

The substrate 10 with an AG layer of the present embodiment includes a transparent substrate 12 and an AG layer 14 formed on the transparent substrate 12.

(transparent substrate)

The transparency of the transparent substrate 12 means light having an average wavelength of 80% or more in the wavelength range of 400 to 1100 nm.

Examples of the form of the transparent substrate 12 include a plate, a film, and the like.

The material of the transparent substrate 12 may, for example, be glass or resin.

Examples of the glass include soda lime glass, borosilicate glass, aluminosilicate glass, and alkali-free glass.

Examples of the resin include polyethylene terephthalate, polycarbonate, triacetyl cellulose, polymethyl methacrylate, and the like.

The transparent substrate 12 is preferably a glass plate.

The glass plate may be a smooth glass plate formed by a floating glass plate method, a melting method, or the like, or may be a template glass having irregularities on the surface formed by a transfer method or the like. Further, it may be not only a flat glass but also a glass having a curved shape.

The thickness of the glass plate is not particularly limited. For example, a glass plate having a thickness of 10 mm or less can be used. The thinner the thickness, the lower the absorption of light, so it is quite appropriate for the purpose of improving the transmittance.

When the glass is soda lime glass, it is preferred to have the following composition.

It is expressed by the mass percentage of the oxide standard and contains: SiO ₂ : 65 to 75%, Al ₂ O ₃ : 0 to 10%, CaO: 5 to 15%, MgO: 0 to 15%, and Na ₂ O: 10 to 20 %, K ₂ O: 0 to 3%, Li ₂ O: 0 to 5%, Fe ₂ O ₃ : 0 to 3%, TiO ₂ : 0 to 5%, CeO ₂ : 0 to 3%, BaO: 0~ 5%, SrO: 0 to 5%, B ₂ O ₃ : 0 to 15%, ZnO: 0 to 5%, ZrO ₂ : 0 to 5%, SnO ₂ : 0 to 3%, and SO ₃ : 0 to 0.5 %.

When the glass is an alkali-free glass, it is preferred to have the following composition.

It is represented by the mass percentage of the oxide standard, and contains: SiO ₂ : 39 to 70%, Al ₂ O ₃ : 3 to 25%, B ₂ O ₃ : 1 to 30%, MgO: 0 to 10%, and CaO: 0~ 17%, SrO: 0~20%, and BaO: 0~30%.

When the glass is aluminosilicate glass, it is preferred to have the following composition.

In mole percentages of oxides expressed, _{comprising: SiO 2: 62 ~ 68%} , Al 2 O 3: 6 ~ 12%, MgO: 7 ~ 13%, Na 2 O: 9 ~ 17%, K 2 O: 0~7%, and ZrO ₂ : 0~8%.

The glass sheet can also be pre-strengthened. By strengthening the treatment, the strength of the glass can be increased, for example, the thickness can be reduced while maintaining the strength.

In the strengthening treatment, physical strengthening or chemical strengthening of the air-cooling after the glass plate is exposed to high temperature may be mentioned, and the chemical strengthening is performed by immersing the glass plate in a molten salt containing an alkali metal and depositing it on the glass substrate. The alkali metal ion (for example, Na ion) having a smaller atomic diameter at the outermost surface is substituted with an alkali metal ion (for example, K ion) having a larger atomic diameter existing in the molten salt. Aluminosilicate glass is particularly preferred when the glass plate is subjected to chemical strengthening treatment.

(AG layer)

The AG layer 14 is a layer containing chain-like solid ceria particles and having irregularities on the surface.

The AG layer 14 typically further comprises a matrix filled with voids between the chained solid ceria particles. The matrix can also cover the chain of solid cerium oxide particles The side (ie, the side opposite to the side of the transparent substrate 12) is such that the chain-shaped solid ceria particles are not exposed.

The AG layer 14 may further contain other particles than the chain-shaped solid ceria particles.

The AG layer 14 can also be formed using a coating liquid containing a terpene compound.

The AG layer 14 may further contain chain-shaped solid cerium oxide particles, a matrix, other particles, and other components other than the terpene compound (hereinafter also referred to as "other optional components").

Chain-shaped solid cerium oxide particles:

The chain-shaped solid ceria particles are solid ceria particles having a chain shape. For example, solid cerium oxide particles having a plurality of shapes such as a spherical shape, an elliptical shape, a needle shape, a plate shape, a rod shape, a cone shape, a column shape, a cube shape, a rectangular parallelepiped shape, a diamond shape, and a star shape may be linked into a chain. The shape of the shape. The shape of the chain-shaped solid ceria particles can be confirmed by an electron microscope.

"Solid" means that there are no voids inside.

The average solid agglomerated particle diameter of the chain-shaped solid cerium oxide particles is preferably 5 to 300 nm, and more preferably 5 to 200 nm. The average agglomerated particle diameter of the chain-shaped solid ceria particles is preferably at least the lower limit of the above range, and the effect of reducing the refractive index is good. When the value is below the upper limit, the abrasion resistance is preferably attained.

Chain-shaped solid cerium oxide particles can be easily obtained from commercial products. Further, those manufactured by a known manufacturing method can be used. For the commercial product, for example, SNOWTEX ST-OUP manufactured by Nissan Chemical Industries Co., Ltd., and the like can be cited.

The content of the chain-like solid cerium oxide particles in the AG layer 14 is preferably 50 to 80% by mass, and 55 to 75% by mass, relative to the total mass of the AG layer 14. Good, 60~70% by mass is especially good. When the content of the chain-like solid cerium oxide particles is more than or equal to the lower limit of the above range, the refractive index of the AG layer 14 is lowered to obtain a sufficient transmittance improving effect. The mechanical strength of the AG layer is preferably as long as the content of the chain-shaped solid cerium oxide particles is less than or equal to the upper limit of the above range.

Matrix:

Examples of the substrate of the AG layer 14 include a cerium oxide-based substrate, a titania-based substrate, and the like.

The matrix of the AG layer 14 is preferably a cerium oxide based substrate. If the substrate is a ceria-based substrate, the refractive index (i.e., reflectance) of the AG layer 14 is liable to lower. Moreover, chemical stability, abrasion resistance, and the like are also excellent. When the transparent substrate is glass, adhesion is particularly preferable.

"Ceria-based matrix" means a matrix containing cerium oxide as a main component. The cerium oxide-based component indicates that the ratio of cerium oxide accounts for 90% by mass or more of the matrix (100% by mass).

The ruthenium dioxide-based matrix is preferably composed of substantially ruthenium dioxide. Substantially composed of cerium oxide means that it consists solely of cerium oxide in addition to impurities which are unavoidable.

The cerium oxide-based substrate may contain a small amount of components other than cerium oxide. As the component, it may be selected from Li, B, C, N, F, Na, Mg, Al, P, S, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni. , one or more of the group consisting of Cu, Zn, Ga, Sr, Y, Zr, Nb, Ru, Pd, Ag, In, Sn, Hf, Ta, W, Pt, Au, Bi and lanthanides An ion, and/or a compound having an oxide or the like selected from one or more of the elements in the group.

The cerium oxide-based substrate may, for example, be a fired product of a cerium oxide-based matrix precursor. The related cerium oxide matrix precursor will be described in detail later.

The layer containing the chain-shaped solid cerium oxide particles and the cerium oxide-based substrate can be formed, for example, from a coating liquid containing chain-shaped solid cerium oxide particles, a cerium oxide-based matrix precursor, and a liquid medium. The method of forming the coating liquid and the AG layer 14 will be described in detail later.

Other particles:

Examples of the other particles include metal oxide particles, metal particles, pigment-based particles, and resin particles. Other particles may be hollow or solid.

Examples of the material of the metal oxide particles include Al ₂ O ₃ , SiO ₂ , SnO ₂ , TiO ₂ , ZrO ₂ , ZnO, CeO ₂ , Sb-containing SnO _X (ATO), and Sn-containing In ₂ O ₃ ( ITO), RuO _2, and the like.

Examples of the material of the metal particles include metals (Ag, Ru, etc.), alloys (AgPd, RuAu, etc.), and the like.

Examples of the pigment-based particles include inorganic pigments (titanium black, carbon black, etc.) and organic pigments.

Examples of the material of the resin particles include polystyrene, melamine resin, and the like.

Examples of the shape of the other particles include a spherical shape, a round shape, a needle shape, a plate shape, a rod shape, a conical shape, a cylindrical shape, a cubic shape, a rectangular parallelepiped shape, a diamond shape, a star shape, and an indefinite shape. The other particles may be in a state in which the particles are present in an independent state, or the particles may be linked in a chain shape, or the particles may be agglomerated together.

The other particles may be used alone or in combination of two or more.

The content of the other particles in the AG layer 14 is preferably 30% by mass based on the total mass of the AG layer 14.

The average agglomerated particle diameter of the other particles is preferably the same as that of the chain solid ceria particles.

For other particles, hollow cerium oxide particles are preferred from the viewpoint of excellent refractive index reduction effect.

Terpene compounds:

The terpene compounds will be detailed later.

Other optional ingredients:

Other optional ingredients will be detailed later.

The refractive index of the AG layer 14 is 1.25 to 1.45, and preferably 1.25 to 1.40. By making the refractive index of the AG layer 14 below the upper limit of the above range, the reflectance at the surface of the AG layer 14 can be sufficiently lowered, and the transmittance can be improved more than the case where only the transparent substrate 12 is provided alone. Further, the AG layer 14 having a refractive index of at least the lower limit of the above range is relatively dense, and the mechanical strength and adhesion to a transparent substrate 12 such as a glass plate are excellent. The method for measuring the refractive index will be described later.

The arithmetic mean roughness Ra of the surface of the AG layer 14 (i.e., the surface on the side of the AG layer 14 of the substrate 10 with the AG layer) is 0.05 to 0.25 μm, preferably 0.07 to 0.25 μm, and particularly preferably 0.10 to 0.25 μm.

The arithmetic mean roughness Ra is an index indicating the average height of the peaks and valleys of the surface unevenness. When the arithmetic mean roughness Ra of the surface of the AG layer 14 is at least the lower limit of the above range, the antiglare effect can be sufficiently exhibited. Arithmetic flat surface of AG layer 14 When the average roughness Ra is less than or equal to the upper limit of the above range, the mechanical strength of the AG layer 14 is preferably good, and the haze of the substrate 10 with the AG layer can be sufficiently reduced.

The arithmetic mean roughness Ra of the surface of the AG layer was measured in accordance with the method described in JIS B0601:2001.

The 60° specular gloss of the surface of the AG layer 14 is preferably 50% or less, more preferably 45% or less. The 60° specular gloss of the surface of the AG layer 14 is an indicator of the anti-glare effect. When the 60° specular gloss is 50% or less, the anti-glare effect can be fully exerted.

The lower limit of the 60° specular gloss is not particularly limited in view of the antiglare effect, and is preferably 5% or more, and more preferably 10% or more from the viewpoint of the effect of improving the transmittance.

The 60° specular gloss is measured in accordance with the method specified in JIS Z8741:1997.

(haze)

The substrate 10 with the AG layer preferably has a haze of 5 to 20%, preferably 5 to 15%. When the haze is below the upper limit of the above range, the image contrast when the substrate 10 with the AG layer is used for the display device is good, or when the substrate 10 with the AG layer is used for the solar cell module. The power generation efficiency is good. As long as the haze is above the lower limit of the above range, the anti-glare effect can be easily exerted.

The haze is measured in accordance with the method specified in JIS K7136:2000.

<Method of Manufacturing Substrate Attached to AG Layer>

For example, a method for producing the substrate 10 with an AG layer may be a coating liquid containing chain solid cerium oxide particles, a cerium oxide matrix precursor, and a liquid medium (hereinafter also referred to as an AG layer coating). Coating liquid) coated on transparent substrate 12 A method of forming a coating film and baking it.

The coating liquid for the AG layer will be described in detail later.

(coating)

The coating method of the coating liquid for the AG layer may be a known wet coating method (for example, a spray coating method, a spin coating method, a dip coating method, a die coating method, a curtain coating method, or a screen printing method). Coating method, inkjet method, flow coating method, gravure coating method, bar coating method, flexographic coating method, slit coating method, roll coating method, etc.).

From the viewpoint of easily forming sufficient unevenness, the coating method is preferably a spray method.

Examples of the nozzle used in the spray method include a two-fluid nozzle, a one-fluid nozzle, and the like.

The droplet size of the coating liquid discharged from the nozzle is usually 0.1 to 100 μm, and preferably 1 to 50 μm. When the droplet size is 1 μm or more, irregularities which can sufficiently exhibit an antiglare effect can be formed in a short time. When the droplet size is 50 μm or less, it is easy to form an appropriate unevenness that can sufficiently exhibit an antiglare effect.

The droplet size can be appropriately adjusted by the type of the nozzle, the spray pressure, the amount of liquid, and the like. For example, in the case of a 2-fluid nozzle, the higher the spray pressure, the smaller the droplets, and the more the amount of liquid, the larger the droplets.

The droplet size is determined by a laser analyzer to determine the Sauter mean diameter.

The arithmetic mean roughness Ra and the 60° specular gloss of the surface of the AG layer can be adjusted by the coating time, that is, the number of coated faces (repeated coating times) by the spraying method under a fixed coating condition. For example, the more coated faces, The arithmetic mean roughness Ra of the surface of the AG layer is larger, so that the specular gloss of 60° is lowered (that is, the antiglare effect becomes high), and the haze tends to become large.

When the coating liquid for the AG layer is applied by a spray method, it is preferred to heat the transparent substrate 12 to 30 to 90 ° C in advance. When the temperature of the transparent substrate 12 is 30 ° C or more, since the liquid medium evaporates quickly, it is easy to form a sufficient unevenness. When the temperature of the transparent substrate 12 is 90 ° C or less, the adhesion between the transparent substrate 12 and the AG layer 14 is preferably good. When the transparent substrate 12 is a glass plate having a thickness of 5 mm or less, the heat insulating plate having a temperature set at a temperature equal to or higher than the temperature of the transparent substrate 12 may be disposed under the transparent substrate 12 to suppress a decrease in the temperature of the transparent substrate 12.

(burning)

The coating film formed by the application of the coating liquid for the AG layer is fired, whereby the liquid medium can be removed, and the remaining hydrolyzable group can be substantially decomposed and the film can be densified to form the AG layer 14.

In the present invention, the baking comprises heating and drying the coating film obtained by applying the coating composition.

When the coating liquid for the AG layer is applied onto the transparent substrate 12, the baking may be carried out by heating and coating, or after the coating liquid is applied to the substrate, the coating film may be heated. .

The firing temperature is preferably 30° C. or higher, and may be appropriately determined depending on the material of the transparent substrate 12 and the material of the coating liquid for the AG layer.

When the cerium oxide-based matrix precursor is the decane compound (A), the firing temperature is preferably 80 ° C or higher, and preferably 100 ° C or higher. When the firing temperature is 80 ° C or higher, the fired product can be densified to improve durability.

When the material of the transparent substrate 12 is a resin, the baking temperature is lower than the heat resistance temperature of the resin. When the material of the transparent substrate 12 is glass, the firing temperature is preferably at or below the glass softening point temperature.

When the transparent substrate 12 is a chemically strengthened glass plate, the firing temperature is preferably 80 to 450 °C.

When the transparent substrate 12 is a glass plate which is not chemically strengthened, it may have both a baking step in forming the AG layer 14 and a physical strengthening step in the glass plate. In the physical strengthening step, the glass sheet is heated to near the softening temperature of the glass. At this time, the firing temperature is typically set to about 600 to 700 °C.

Even if it is naturally dry, the polymerization will proceed to some extent. Assuming that there is no restriction in time, it is theoretically possible to set the drying or firing temperature to a temperature near room temperature.

( coating liquid for AG layer)

The coating liquid for the AG layer contains chain-shaped solid cerium oxide particles, a cerium oxide-based matrix precursor, and a liquid medium.

The coating liquid for the AG layer may further contain other particles, a terpene compound, and other optional components depending on the requirements.

Chain-shaped solid cerium oxide particles:

The description of the chain-shaped solid ceria particles is the same as described above.

Cerium Oxide Matrix Precursor:

The "cerium oxide-based matrix precursor" means a substance which can be formed by firing to form a cerium oxide-based matrix.

The cerium oxide-based matrix precursor includes a decane compound (hereinafter also referred to as a decane compound (A)) having a hydrolyzable group bonded to a ruthenium atom, The hydrolysis condensate of the decane compound (A) (sol-gel cerium oxide), decazane, etc., from the viewpoint of each characteristic of the AG layer 14, the decane compound (A) and its hydrolysis condensate Or both, and the hydrolysis condensate of the decane compound (A) is preferred.

The decane compound (A) may, for example, be a decane compound (A1) having a hydrocarbon group and a hydrolyzable group bonded to a ruthenium atom, and an alkoxy decane (except for a decane compound (A1)).

In the decane compound (A1), the hydrocarbon group bonded to the ruthenium atom may be a monovalent hydrocarbon group bonded to one ruthenium atom, or may be a divalent hydrocarbon group bonded to two ruthenium atoms. Examples of the monovalent hydrocarbon group include an alkyl group, an alkenyl group, an aryl group and the like. As the divalent hydrocarbon group, there may be mentioned an alkyl group, an alkenyl group, an extended aryl group and the like.

The hydrocarbon group may have one or a combination of two or more selected from the group consisting of -O-, -S-, -CO-, and -NR'- (except that R' is a hydrogen atom or a monovalent hydrocarbon group) between carbon atoms. base.

The "hydrolyzable group bonded to a halogen atom" means a group which can be converted into an OH group bonded to a halogen atom by hydrolysis.

Examples of the hydrolyzable group include an alkoxy group, a decyloxy group, a ketoximino group, an alkenyloxy group, an amine group, an amineoxy group, a decylamino group, an isocyanate group, and a halogen atom. Among these, from the viewpoint of the balance between the stability of the decane compound (A1) and the ease of hydrolysis, an alkoxy group, an isocyanate group, and a halogen atom (particularly a chlorine atom) are preferred.

The alkoxy group is preferably an alkoxy group having 1 to 3 carbon atoms, and preferably a methoxy group or an ethoxy group.

Hydrolyzable group when a plurality of hydrolyzable groups are present in the decane compound (A1) The same basis may be used as the basis of the mutual difference, and the same basis is preferred from the viewpoint of easy entry.

Examples of the decane compound (A1) include a compound represented by the following formula (I), an alkoxysilane having an alkyl group (methyltrimethoxysilane, ethyltriethoxysilane, etc.), and an alkoxy group having a vinyl group. Decane (vinyl trimethoxy decane, vinyl triethoxy decane, etc.), alkoxy decane having an epoxy group (2-(3,4-epoxycyclohexyl)ethyltrimethoxy decane, 3-glycidoxypropane Propyltrimethoxyoxane, 3-glycidoxypropylmethyldiethoxydecane, 3-glycidoxypropyltriethoxydecane, etc., and alkoxyoxane having an acryloxy group ( 3-propenyloxypropyltrimethoxyoxane, etc.).

From the viewpoint of mechanical strength of the AG layer 14, the compound of the formula (I) of the decane compound (A1) is preferred.

R _3-p L _p Si-Q-SiL _p R _3-p ...(I)

In the formula (I), Q is a divalent hydrocarbon group (the carbon atoms may have a group selected from -O-, -S-, -CO- and -NR'- (except that R' is a hydrogen atom or a monovalent hydrocarbon group) One or a combination of two or more bases). The divalent hydrocarbon may be as described above.

From the viewpoints of mechanical strength and ease of handling of the AG layer 14, Q is preferably an alkyl group having 2 to 8 carbon atoms, and more preferably an alkyl group having 2 to 6 carbon atoms.

In the formula (I), L is a hydrolyzable group. The hydrolyzable group may be exemplified above, and the ideal aspect is also the same.

R is a hydrogen atom or a monovalent hydrocarbon group. The above-mentioned ones are mentioned as a monovalent hydrocarbon.

p is an integer from 1 to 3. From the viewpoint that the reaction rate does not become too slow, p is preferably 2 or 3, and particularly preferably 3.

With regard to alkoxy decane (except for the aforementioned decane compound (A1)), Examples thereof include tetraalkoxysilane (tetramethoxysilane, tetraethoxyoxane, tetrapropoxydecane, tetrabutoxydecane, etc.), and alkoxysilanes having a perfluoropolyether group (perfluoropolyether triethoxydecane, etc.) And alkoxysilane (perfluoroethyltriethoxydecane, etc.) having a perfluoroalkyl group.

The hydrolysis and condensation of the decane compound (A) can be carried out by a known method.

For example, when the decane compound (A) is a tetraalkane, it is carried out using water of 4 times the molar amount or more of tetraoxoxane and an acid or a base as a catalyst.

Examples of the acid include inorganic acids (such as HNO ₃ , H ₂ SO ₄ , and HCl) and organic acids (such as formic acid, oxalic acid, chloroacetic acid, dichloroacetic acid, and trichloroacetic acid). Examples of the base include ammonia, sodium hydroxide, potassium hydroxide and the like. From the viewpoint of long-term storage stability of the hydrolysis condensate of the decane compound (A), the catalyst is preferably an acid.

The catalyst for the hydrolysis of the decane compound (A) is preferably one which does not interfere with the dispersion of fine particles such as chain-shaped solid cerium oxide particles.

The cerium oxide-based matrix precursor may be used singly or in combination of two or more.

From the viewpoint of various properties such as mechanical strength and film crack prevention of the AG layer 14, the ceria-based matrix precursor contains either or both of the decane compound (A1) and its hydrolysis condensate, and tetraalkoxy Either or both of decane and its hydrolysis condensate are preferred.

The ratio of the decane compound (A1) and the hydrolysis condensate thereof in the cerium oxide-based matrix precursor is 5 to 30% by mass based on the SiO ₂ conversion solid content (100% by mass) of the cerium oxide-based matrix precursor. good.

Liquid medium:

The liquid medium is a dispersion medium in which chain solid cerium oxide particles are dispersed. The liquid medium may also be a solvent that dissolves the ceria-based matrix precursor.

Examples of the liquid medium include water, alcohols, ketones, ethers, celecoxime, esters, glycol ethers, nitrogen-containing compounds, sulfur-containing compounds, and the like.

Examples of the alcohol include methanol, ethanol, isopropanol, butanol, diacetone alcohol and the like.

Examples of the ketone include acetone, methyl ethyl ketone, methyl isobutyl ketone and the like.

In the case of ethers, for example, tetrahydrofuran, 1,4-two Alkane, etc.

In the case of the celluloid, for example, there are methyl acesulfame, ethyl acesulfame, and the like.

Examples of the esters include methyl acetate, ethyl acetate and the like.

Examples of the glycol ethers include ethylene glycol monoalkyl ethers and the like.

Examples of the nitrogen-containing compound include N,N-dimethylacetamide, N,N-dimethylformamide, N-methylpyrrolidone, and the like.

In the case of a sulfur-containing compound, for example, dimethyl hydrazine or the like is used.

The liquid medium may be used singly or in combination of two or more.

The hydrolysis of alkoxysilane or the like in the ceria-based matrix precursor requires water, so that the liquid medium contains at least water as long as it is not replaced by the liquid medium after the hydrolysis.

At this time, the liquid medium may be only water or a mixture of water and other liquids. Examples of the other liquids include alcohols, ketones, ethers, celecoxime, esters, glycol ethers, nitrogen-containing compounds, and sulfur-containing compounds. Among other liquids, an alcohol is preferred as the solvent of the cerium oxide-based matrix precursor, and methanol, ethanol, isopropyl alcohol or butanol is particularly preferred.

The liquid medium may also contain an acid or a base. The acid or the base may be added as a catalyst for hydrolysis or condensation of a raw material (alkoxysilane or the like) in the preparation of a solution of a cerium oxide-based matrix precursor, or may be added after being prepared by a solution of a cerium oxide-based matrix precursor. .

Other microparticles:

The description of other microparticles is the same as described above.

Terpene compounds:

When the coating liquid for the AG layer further contains a terpene compound, voids are formed around the chain-shaped solid ceria particles, and the refractive index is lower than that of the case where the terpene-free compound is not contained, and the penetration rate is improved. The tendency to increase.

Terpene refers to a hydrocarbon composed of (C ₅ H ₈ ) _n (wherein n is an integer of 1 or more) having isoprene (C ₅ H ₈ ) as a constituent unit. The terpene compound means a terpene having a functional group derived from a terpene. Terpene compounds also contain compounds having different degrees of unsaturation.

However, although the terpene compound also functions as a liquid medium, "the hydrocarbon composed of (C ₅ H ₈ ) _n having isoprene as a constituent unit is attributed to the terpene derivative, not Attributable to the liquid medium.

As the terpene compound, a terpene derivative or the like described in International Publication No. 2010/018852 can be used.

Other optional ingredients:

Examples of the other optional components include a surfactant for improving the leveling property, a metal compound for improving the durability of the AG layer 14, an ultraviolet absorber, an infrared reflection/infrared absorber, an antireflection agent, and the like.

Examples of the surfactant include a polyoxyphthalic acid system and an acrylic resin.

As the metal compound, a zirconium chelate compound, a titanium chelate compound, an aluminum chelate compound or the like is preferred. Examples of the zirconium chelate compound include zirconium tetraacetate acetate and zirconium tributoxystearate.

composition:

The solid content (100% by mass) in the coating liquid for the AG layer (except that the cerium oxide-based matrix precursor is converted to SiO ₂ ), and the content of the chain-like solid cerium oxide particles in the coating liquid for the AG layer is 50 to 80% by mass is preferred, 55 to 75% by mass is preferred, and 60 to 70% by mass is particularly preferred. When the content of the chain-shaped solid cerium oxide particles is at least the lower limit of the above range, the refractive index of the AG layer 14 can be reduced, and a sufficient transmittance improving effect can be obtained. The mechanical strength of the AG layer is preferably as long as the content of the chain-shaped solid cerium oxide particles is less than or equal to the upper limit of the above range.

The content of the ceria-based matrix precursor (in terms of SiO ₂ ) in the coating liquid for the AG layer is preferably 20 to 50% by mass based on the solid content (100% by mass) in the coating liquid for the AG layer. 25 to 45 mass% is preferred. The content of the cerium oxide-based matrix precursor is preferably at least the lower limit of the above range, and the mechanical strength is preferably.

When the coating liquid for the AG layer contains a terpene compound, it is coated with the solid content (100% by mass) in the coating liquid for the AG layer (in the case of the cerium oxide-based matrix precursor in terms of SiO ₂ ), and the coating for the AG layer. The content of the terpene compound in the liquid is preferably 0.05 to 0.25 mass%, more preferably 0.1 to 0.15 mass%. When the content of the terpene compound is at least the lower limit of the above range, the effect obtained by containing a terpene compound can be easily obtained. When the content of the terpene compound is at most the upper limit of the above range, mechanical strength is good.

The concentration of the solid content of the coating liquid for the AG layer is preferably from 1 to 8% by mass, more preferably from 2 to 5% by mass. When the solid content concentration is at least the lower limit of the above range, the antiglare effect can be enhanced. When the solid content concentration is at most the upper limit of the above range, the mechanical strength can be improved.

The solid content concentration of the coating liquid for the AG layer is the total content of the total components other than the liquid medium in the coating liquid for the AG layer. However, the content of the cerium oxide-based matrix precursor is in terms of SiO ₂ .

The coating liquid for the AG layer can be, for example, a chain-shaped solid cerium oxide particle dispersion, a cerium oxide-based matrix precursor solution, a liquid medium to be added as needed, a dispersion of other particles, a terpene compound, and the like. The components and the like are mixed and prepared.

(Effect)

Since the refractive index of the AG layer 14 in the substrate 10 with the AG layer is 1.25 to 1.45, the arithmetic mean roughness Ra of the surface of the AG layer 14 is 0.05 to 0.25 μm, and the AG layer 14 contains chain-like solid cerium oxide particles, Compared with the conventional one, the balance between the anti-glare effect, the transmittance improvement effect and the mechanical strength is excellent. Materials are also easy to get started.

In the case where the hollow ceria particles are used, it is necessary to increase the content when the refractive index is to be lowered by the solid ceria particles. Further, it is known that the content of fine particles is large, the mechanical strength such as abrasion resistance is lowered, and the haze tends to increase. However, in the substrate 10 with the AG layer of the present invention, surprisingly, when the chain-shaped solid ceria particles are used as the fine particles, the AG layer 14 is still sufficient even if the content thereof is large (for example, 70% by mass). The mechanical strength and the haze of the substrate 10 with the AG layer are also low enough.

(use)

The use of the substrate 10 with the AG layer is not particularly limited. Specific examples include a transparent member for a vehicle (a headlight cover, a side mirror, a front transparent substrate, a side transparent substrate, a rear transparent substrate, a surface plate of an instrument panel, etc.), a meter, a building window, a display window, and a display ( Notebook computer, monitor, LCD, PDP, ELD, CRT, PDA, etc.), LCD color filter, touch panel substrate, pickup lens, optical lens, spectacle lens, camera part, video recorder part, CCD cover substrate , fiber end face, projector parts, copier parts, transparent substrate for solar cells (cover glass, etc.), mobile phone window, backlight assembly parts (light guide plate, cold cathode tube, etc.), backlight assembly parts, liquid crystal brightness enhancement film (稜鏡, semi-transmissive film, etc., organic EL light-emitting device parts, inorganic EL light-emitting element parts, phosphor light-emitting element parts, optical filters, optical component end faces, illumination lamps, housings for lighting fixtures, amplified laser light sources, anti-reflection Films, polarizing films, and agricultural films.

The substrate 10 with the AG layer is preferably a transparent substrate for a solar cell.

In the solar cell module, in order to protect the solar cell, a transparent substrate (cover glass or the like) is disposed in front of the solar cell or the like. Depending on the location, light damage may occur due to reflected light reflected from the surface of the transparent substrate. Moreover, the solar transmittance of the transparent substrate affects the power generation efficiency of the solar cell module. Moreover, in order to protect the solar cell, mechanical strength is also emphasized. The substrate 10 with the AG layer of the present invention is excellent in the balance between the antiglare effect, the transmittance improving effect, and the mechanical strength, and thus can be effectively used as a transparent substrate for a solar cell.

The above description of the embodiments of the present invention has been described, but the present invention is not limited to the above embodiments. Each component in the above embodiment The combination and the like are merely examples, and the additions, omissions, substitutions, and other modifications may be made without departing from the spirit and scope of the invention.

For example, the upper side of the AG layer 14 (the side opposite to the side of the transparent substrate 12) may have a functional layer such as an AFP (Fingerprint Removal Layer). A functional layer such as an alkali barrier layer, a reflectance waveform adjustment layer, or an infrared shielding layer may be provided between the transparent substrate 12 and the AG layer 14. The functional layer can be formed by a known method such as a coating method.

[article]

The article of the present invention comprises the above-mentioned substrate with an AG layer.

The article of the present invention may be composed of the base material with the AG layer described above, and may further include other members than the base material with the AG layer.

Examples of the article of the present invention include those described above for use as the substrate 10 with an AG layer, and devices having any one or more of the above.

As the device, for example, there are a solar cell module, a display device, a lighting device, and the like.

The solar cell module includes a solar cell and a transparent substrate (cover glass or the like) disposed on the front surface and the back surface of the solar cell to protect the solar cell, and the substrate having the AG layer is used as the transparent substrate. At least one of the transparent substrates (ideally at least the front side of the transparent substrate) is preferred.

Examples of the display device include, for example, a mobile phone, a smart phone, a tablet, a car navigation, and the like.

Examples of the illumination device include an organic EL (electroluminescence) illumination device, an LED (light-emitting diode) illumination device, and the like.

Example

The invention will be described in detail below by way of examples. However, the invention is not limited by the following description.

In Examples 1 to 7, which will be described later, Examples 2 to 5 are examples, and Examples 1 and 6 and 7 are comparative examples.

The evaluation methods and materials used in each case are shown below.

[evaluation method]

(average aggregated particle size)

The average agglomerated particle diameter of the fine particles (chain-shaped solid cerium oxide particles and hollow cerium oxide particles) was measured by a dynamic light scattering particle size analyzer (manufactured by Nikkiso Co., Ltd., Microtrac UPA).

(refractive index of the AG layer)

The refractive index n of the AG layer was measured by the following method.

Forming a single-layer smoothing film of a layer of refractive index to be formed on the surface of the transparent substrate by a spin coater, and adhering the black plastic tape to the side opposite to the single-layer film in a bubble-free manner surface. Then, the reflectance of the above-mentioned single layer film was measured by a spectrophotometer (manufactured by Otsuka Electronics Co., Ltd., instantaneous multi-photometry system MCPD-3000) at a wavelength of 300 to 780 nm. When the reflectance is measured, the incident angle of light is set to 2°. The refractive index n is calculated by the following formula (1) from the lowest reflectance (bottom reflectance R _min ) in the range of 300 to 780 nm and the refractive index n _{s of the} transparent substrate.

R _min =(nn _s ) ² /(n+n _s ) ² ...(1)

(arithmetic mean roughness Ra)

The arithmetic mean roughness Ra of the surface of the AG layer is the surface roughness meter (Tokyo "Surfcom (registered trademark) 1500DX" manufactured by Seiko Co., Ltd.) was measured by the method described in JIS B0601:2001. The reference length lr (cutoff λ c) for the thickness curve is 0.08 mm.

(transmission rate difference Td)

For the transparent substrate before the formation of the AG layer and the substrate with the AG layer obtained in each example, the light transmittance (%) at a wavelength of 400 nm to 1100 nm was measured using a spectrophotometer (manufactured by JASCO Corporation, V670). And the average penetration rate (%) was determined. From the results, the transmittance difference Td (%) was calculated by the following formula (2). Let the incident angle of light be 0° (normal incidence on the transparent substrate). The larger the penetration difference Td, the higher the penetration improvement effect.

Td=T1-T2...(2)

However, T1 is the average transmittance (%) of the substrate with the AG layer, and T2 is the average transmittance (%) of only the transparent substrate.

(Gloss)

The 60° specular gloss was measured for the gloss of the surface of the AG layer. The 60° specular gloss was measured at a substantially central portion of the AG layer by a method specified in JIS Z8741:1997 using a gloss meter (manufactured by Nippon Denshoku Industries Co., Ltd., PG-3D type). Further, the glossiness of the surface of the AG layer was measured by adhering a black tape to the back surface of the glass plate (i.e., the surface opposite to the side of the AG layer) to eliminate the influence of reflection on the back surface of the glass plate. The smaller the gloss, the better the anti-glare.

(haze)

The haze is a haze meter (manufactured by Murakami Color Research Co., Ltd., HM150L2 type) by the method specified in JIS K7136:2000 (ISO 14782:1999). The measurement was performed at a substantially central portion of the AG layer.

(wear resistance)

The following abrasion test was performed on the evaluation of wear resistance. A felt having a diameter of 1 cm × 2 cm (manufactured by New Chemical Industrial Co., Ltd., and a cake for polishing AM-1) was attached to a friction tester (manufactured by Daping Chemical Industry Co., Ltd.), and the felt was brought into contact with the substrate of the AG layer with a load of 1 kg. The side surface of the AG layer was horizontally reciprocated and the felt was reciprocated 40 times.

The gloss of the surface of the AG layer before the abrasion test and after the abrasion test was measured by the above procedure, and the gloss change ΔG (%) before and after the abrasion test was calculated from the results using the following formula (3). The smaller the gloss change ΔG is, the better the abrasion resistance is.

△G=G1-G2...(3)

However, G1 is the gloss (%) of the surface of the AG layer before the abrasion test, and G2 is the gloss (%) of the surface of the AG layer after the abrasion test.

[Use materials]

(Preparation of cerium oxide matrix precursor solution (a-1))

The modified ethanol (manufactured by Japan Alcohol Trading Co., LTD., trade name "Solmix (registered trademark) AP-11"; a mixed solvent containing ethanol as the main solvent; the modified ethanol used in the following preparation is the same 75.8 g of a mixture of 11.9 g of ion-exchanged water and 0.1 g of 61% by mass of nitric acid was added, and stirred for 5 minutes. Silicon tetraethoxide is added to a dioxane (calculated as SiO ₂ solid content concentration: 29 mass%) 12.2g, was stirred at room temperature for 30 minutes to prepare a solid content concentration calculated as SiO ₂ of 3.5% by mass of silicon dioxide-based matrix Precursor solution (a-1).

And, here all the Si to SiO solid content concentration calculated based tetraethoxy _silane-2 was converted to a solid content concentration of SiO _2.

(Preparation of cerium oxide matrix precursor solution (a-2))

While stirring 80.3 g of modified ethanol, a mixed liquid of 7.9 g of ion-exchanged water and 0.2 g of 61% by mass of nitric acid was added and stirred for 5 minutes. Next, 1,6-bis(trimethoxyindenyl)hexane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "KBM3066", solid content concentration: 37% by mass in terms of SiO ₂ ), 11.6 g, was added in a water bath at 60 ° C. The cerium oxide-based matrix precursor solution (a-2) having a solid content concentration of 4.3% by mass in terms of SiO ₂ was prepared by stirring for 15 minutes.

And, in all of this Si SiO ₂ solid content concentration calculated based 1,6-bis (silicon based-trimethoxyphenyl) hexane was converted to a solid content concentration of ₂ SiO.

(modulation of coating liquid (A))

While stirring 77.1 g of the ceria-based matrix precursor solution (a-1), 7.0 g of the ceria-based matrix precursor solution (a-2) was added and stirred for 30 minutes. Then, 15.9 g of modified ethanol was added, and the mixture was stirred at room temperature for 30 minutes to obtain a coating liquid (A) having a solid content concentration of 3.0% by mass in terms of SiO ₂ .

(modulation of coating liquid (B))

Adding 30.0 g of the coating liquid (A) while stirring 56.5 g of the modified ethanol, and then adding 13.5 g of a chain-shaped solid cerium oxide sol ("SNOWTEX (registered trademark) ST-OUP" manufactured by Nissan Chemical Industries, Ltd.) The mixture was stirred at a temperature for 30 minutes to obtain a coating liquid (B) having a solid content concentration of 3.0% by mass in terms of SiO ₂ .

In addition, in the SiO ₂ conversion solid content concentration coating liquid (A), the SiO ₂ conversion solid content and the chain solid cerium oxide sol in terms of SiO ₂ conversion solid content (chain solid cerium oxide particles) Total.

The content of the chain-like solid cerium oxide particles in the coating liquid (B) was 70% by mass based on the solid content in terms of SiO ₂ in the coating liquid (B).

The chain-shaped solid cerium oxide particles in the coating liquid (B) had an average aggregated particle diameter of 70 nm.

(modulation of coating liquid (C))

50.0 g of the coating liquid (A) was added while stirring the modified ethanol (36.5 g), followed by the addition of 13.5 g of a chain-shaped solid cerium oxide sol ("SN OWTEX (registered trademark) ST-OUP" manufactured by Nissan Chemical Industries, Ltd.). The mixture was stirred at room temperature for 30 minutes to obtain a coating liquid (C) having a solid content concentration of 5.0% by mass in terms of SiO ₂ .

(modulation of coating liquid (D))

Adding 50.0 g of the coating liquid (A) while stirring 5.5 g of the modified ethanol, and then adding a chain-shaped solid cerium oxide sol ("SNO WTEX (registered trademark) ST-OUP) manufactured by Nissan Chemical Industries Co., Ltd." 13.5 g, 20.0 g of butanol, 10.0 g of diacetone alcohol, and 1.0 g of α-terpineol were stirred at room temperature for 30 minutes to obtain a coating liquid (D) having a solid content concentration of 5.0% by mass in terms of SiO ₂ .

(modulation of coating liquid (E))

70.0 g of the coating liquid (A) was added while stirring 25.6 g of the modified ethanol, and then hollow cerium oxide sol ("THRUL YA (registered trademark) 4110)", 4.4 g, was added at room temperature. The coating liquid (E) having a solid content concentration of 3.0% by mass in terms of SiO ₂ was obtained by stirring for 30 minutes.

(modulation of coating liquid (F))

30.0 g of the coating liquid (A) was added while stirring 59.8 g of the modified ethanol, and then 10.2 g of a hollow cerium oxide sol (THRULYA (registered trademark) 4110 manufactured by Nippon Kasei Co., Ltd.) was added, and the mixture was stirred at room temperature for 30 minutes. A coating liquid (F) having a solid content concentration of 3.0% by mass in terms of SiO ₂ was obtained.

[example 1]

(cleaning of transparent substrate)

A chemically strengthened aluminosilicate glass plate (manufactured by Asahi Glass Co., Ltd., trade name "Leoflex (registered trademark)" was prepared for the transparent substrate. Dimensions: 300 mm × 300 mm, thickness 0.85 mm). After washing the surface of the transparent substrate with sodium hydrogencarbonate, it was rinsed with ion-exchanged water and dried.

(Production of substrate with AG layer)

The transparent substrate was preheated in a preheating furnace (manufactured by ISUZU Co., Ltd., VTR-115). Next, the coating liquid (A) was applied onto the transparent substrate so as to have an arithmetic mean roughness Ra shown in Table 1 under the following conditions while maintaining the surface temperature of the transparent substrate at 90 °C. .

. Spray pressure: 0.2MPa,. Nozzle moving speed: 750mm / min,. Spray interval: 22mm.

Then, it was heat-hardened at 200 ° C for 3 minutes in the atmosphere to obtain a substrate with an AG layer.

For the coating method by the spray method, a 6-axis automatic robot (JF-5 manufactured by Kawasaki Robotics Co., Ltd.) was used. Further, a VAU nozzle (manufactured by Spraying Systems Japan Co.) was used for the nozzle 20.

[Examples 2, 3]

The same method as in Example 1 except that the coating liquid (A) was changed to the coating liquid (B) and applied so as to have an arithmetic mean roughness Ra shown in Table 1. A substrate with an AG layer was prepared in the same manner.

[Example 4]

An AG layer was obtained in the same manner as in Example 1 except that the coating liquid (A) was changed to the coating liquid (C) and applied so as to have the arithmetic mean roughness Ra shown in Table 1. The substrate.

[Example 5]

An AG layer was produced in the same manner as in Example 1 except that the coating liquid (A) was changed to the coating liquid (D) and applied so as to have the arithmetic mean roughness Ra shown in Table 1. The substrate.

[Example 6]

An AG layer was produced in the same manner as in Example 1 except that the coating liquid (A) was changed to the coating liquid (E) and applied so as to have the arithmetic mean roughness Ra shown in Table 1. The substrate.

[Example 7]

An AG layer was obtained in the same manner as in Example 1 except that the coating liquid (A) was changed to the coating liquid (F) and applied so as to have the arithmetic mean roughness Ra shown in Table 1. The substrate.

With respect to the substrate with the AG layer obtained in each example, the particle ratio (% by mass) in the AG layer, the refractive index of the AG layer, the arithmetic mean roughness Ra of the surface, the difference in transmittance Td, and the glossiness are shown in Table 1. (%), haze (%), and abrasion resistance (gloss change ΔG (%)).

The particle ratio is the ratio of the cerium oxide particles (chain-shaped solid cerium oxide particles, hollow cerium oxide particles) in the coating liquid used in the formation of the AG layer in each case to the solid content in terms of SiO ₂ , which is equal to the dioxide. The ratio of bismuth particles to the total mass of the AG layer.

As shown in the above results, the transmittance difference Td of Example 1 in which the particle ratio in the AG layer was 0 was 0.0% (the same as the case where only the transparent substrate was used alone), and the effect of improving the transmittance was not observed.

In the case of the case where the AG layer contains the chain-like solid ceria particles, the examples 2 to 5 have a higher transmittance than the case where only the transparent substrate is used alone. Moreover, the anti-glare property and the abrasion resistance are also sufficiently good. Further, although the particles were contained in a ratio of 70% by mass, the haze was lower than that of Example 1 containing no particles.

In Example 4, since the solid content was high, voids were easily formed at the time of film formation, so the refractive index was lower than that of Examples 2 and 3, and the lift transmittance was higher than that of the case where only the transparent substrate was used alone. Moreover, the anti-glare property and the abrasion resistance are also sufficiently good.

The refractive index of Example 5 is lower than that of Examples 2 to 4. Compared with the case where only a transparent substrate is provided alone, the transmittance is greatly improved. We think it is because it contains terpenes The result was obtained by a derivative. Moreover, the anti-glare property and the abrasion resistance are also sufficiently good.

The refractive index of the example 6 of the hollow cerium oxide particles having a particle ratio of 30% by mass and the arithmetic mean roughness Ra of 0.31 μm was the same as those of Examples 2 to 5, but the transmittance was not improved.

In the case of using hollow cerium oxide particles having a particle ratio of 70% by mass, the abrasion resistance was lower than that of Examples 2 to 5.

Industrial availability

According to the present invention, it is possible to provide an anti-glare layer-containing substrate having an anti-glare layer excellent in anti-glare effect, a transmittance improvement effect, and a mechanical strength balance, and an article using the same, which can be effectively used as various types of machines. Anti-glare substrate.

The entire contents of the specification, the scope of the application, the drawings and the abstract of the Japanese Patent Application No. 2014-089455, filed on Apr. 23, 2014, are hereby incorporated by reference.

10‧‧‧Substrate with anti-glare layer

12‧‧‧Transparent substrate

14‧‧‧Anti-glare layer

Claims (6)

A substrate with an anti-glare layer, comprising a transparent substrate and an anti-glare layer formed on the transparent substrate, wherein the anti-glare layer has a refractive index of 1.25 to 1.45, and an arithmetic mean of the surface of the anti-glare layer The roughness Ra is 0.05 to 0.25 μm, and the antiglare layer contains chain solid cerium oxide particles. The substrate of the anti-glare layer of claim 1, wherein the content of the chain-shaped solid cerium oxide particles in the anti-glare layer is 50 to 80% by mass based on the total mass of the anti-glare layer. The substrate of the anti-glare layer of claim 1 or 2, wherein the chain-shaped solid cerium oxide particles have an average agglomerated particle diameter of 5 to 300 nm. The substrate with an anti-glare layer according to any one of claims 1 to 3, wherein the anti-glare layer is a layer formed of a coating liquid containing the aforementioned chain-shaped solid ceria particles and cerium oxide. It is a matrix precursor and a liquid medium. The substrate of the anti-glare layer of claim 4, wherein the coating liquid further contains a terpene compound. An article comprising the substrate with an anti-glare layer according to any one of claims 1 to 5.