membrane

Abstract

The present application relates to a film. The present application can provide a film having excellent optical properties such as transparency or haze, mechanical properties such as hardness, and flexibility, wherein the shape of the surface is adjusted to be suitable for various uses and the adjusted surface shape has excellent durability.

Description

Technical Field

[0001] The present application relates to a membrane. Background Art

[0002] The transparent resin film has excellent optical properties and is difficult to break compared to glass, so it can be considered as a substitute for glass.

[0003] As a method for producing a transparent resin film, there is known a method also known as a so-called cell casting method, such as a method of injecting a curable composition into a cut groove and then curing it, or a method of flow-casting a curable composition onto a steel belt and curing it.

[0004] The cell casting method is known in Patent Document 1 and the like, but this method cannot produce a film continuously and is not efficient.

[0005] A method of flow-casting a curable composition onto a steel belt and curing it is known in Patent Document 2 and the like, but in this method, it is difficult to produce a film having uniform physical properties.

[0006] (Patent Document 1) Patent Document 1: Japanese Patent Publication No. 1996-132455

[0007] (Patent Document 2) Patent Document 2: Japanese Patent Publication No. 1992-080007 Summary of the invention

[0008] Technical issues

[0009] The present application aims to provide a film. One object of the present application is to provide a film having excellent optical properties such as transparency or haze, mechanical properties such as hardness, and flexibility, wherein the shape of the surface is adjusted to be suitable for various uses, and the adjusted surface shape has excellent durability.

[0010] Technical Solution

[0011] Among the physical properties referred to in this specification, unless otherwise specified, the physical properties whose results are affected by the measuring temperature and / or the measuring pressure are the results measured at room temperature and / or normal pressure.

[0012] The term room temperature is a natural temperature without heating or cooling, and refers to, for example, any temperature within a range of 10° C. to 30° C., or a temperature around 23° C. or about 25° C. In addition, in this specification, unless otherwise specified, the unit of temperature is Celsius (° C.).

[0013] The term normal pressure refers to the natural pressure in the absence of increased or reduced pressure, and generally refers to atmospheric pressure of about 1 atm.

[0014] In the present specification, in the case of measuring physical properties in which humidity affects the result, the relevant physical properties are physical properties measured at natural humidity without special control at room temperature and / or normal pressure.

[0015] In the present application, unless otherwise specified, the term alkyl, alkylene or alkoxy may refer to a straight or branched chain alkyl, alkylene or alkoxy group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms or 1 to 4 carbon atoms, or may refer to a cyclic alkyl, alkylene or alkoxy group having 3 to 20 carbon atoms, 3 to 16 carbon atoms, 3 to 12 carbon atoms, 3 to 8 carbon atoms or 3 to 6 carbon atoms.

[0016] In the present application, unless otherwise specified, the term alkenyl may refer to a straight chain or branched alkenyl group having 2 to 20 carbon atoms, 2 to 16 carbon atoms, 2 to 12 carbon atoms, 2 to 8 carbon atoms, or 2 to 4 carbon atoms, or may refer to a cyclic alkenyl group having 3 to 20 carbon atoms, 3 to 16 carbon atoms, 3 to 12 carbon atoms, 3 to 8 carbon atoms, or 1 to 6 carbon atoms.

[0017] In the present application, unless otherwise specified, the term aryl or arylene may refer to an aryl or arylene group having 6 to 24 carbon atoms, 6 to 18 carbon atoms, or 6 to 12 carbon atoms, or may refer to a phenyl group or a phenylene group.

[0018] In the present application, unless otherwise specified, the term epoxy group may refer to a monovalent residue from a cyclic ether having three ring constituent atoms or a compound containing the cyclic ether. The epoxy group may be exemplified by a glycidyl group, an epoxyalkyl group, a glycidyloxyalkyl group or an alicyclic epoxy group, etc. Here, the alicyclic epoxy group may refer to a monovalent residue from a compound containing an aliphatic hydrocarbon ring structure and including a structure in which two carbon atoms forming the aliphatic hydrocarbon ring also form an epoxy group. As the alicyclic epoxy group, an alicyclic epoxy group having 6 to 12 carbons may be exemplified, and for example, 3,4-epoxycyclohexylethyl, etc. may be exemplified.

[0019] The alkyl, alkylene, alkoxy, alkenyl, aryl, arylene or epoxy group may also be optionally substituted by one or more substituents.

[0020] The present application relates to a film. In an example, the film may include a curing material layer. The curing material layer may be a curing material layer of a composition that may be energy beam cured. The film may have a single-layer structure that only includes the curing material layer, or may have a multilayer structure that includes additional other layers. For example, the film may also include a base film, in which case the curing material layer may be formed on one or both sides of the base film.

[0021] At least one side of the solidified material layer may be an uneven surface. For example, when the solidified material layer is formed on one side of the base film, the surface of the solidified material layer opposite to the surface facing the base film may be an uneven surface. The shape of this uneven surface may be adjusted differently according to the purpose.

[0022] For example, the arithmetic mean roughness (Ra) of the uneven surface may be in the range of about 0.01 μm to 2 μm. The arithmetic mean roughness may be the arithmetic mean roughness of the uneven surface before or after the steel wool test described below. The uneven surface may be a surface combined with a solidified material layer. This means that the uneven surface is not formed by a separate layer different from the solidified material layer, but the associated uneven surface is formed on the solidified material layer itself.

[0023] The arithmetic mean roughness can be determined according to KS B 0601 standard or ISO 4287 / 1 standard. In another example, the arithmetic mean roughness can be 0.05 μm or more, 0.1 μm or more, 0.15 μm or more, 0.2 μm or more, 0.25 μm or more, or 0.3 μm or more, or 1.8 μm or less, 1.6 μm or less, 1.4 μm or less, 1.2 μm or less, 1 μm or less, 0.9 μm or less, 0.8 μm or less, 0.7 μm or less, 0.6 μm or less, 0.5 μm or less, or about 0.4 μm or less.

[0024] In one example, the uneven surface may be an uneven surface forming a so-called anti-glare surface.

[0025] The uneven surface may exhibit a haze in the range of 3% to 50%. The haze may be the haze on the uneven surface before or after performing the steel wool test described below. The haze may be measured by the methods disclosed in the embodiments described below. In another example, the haze may be greater than 3.5%, greater than 4%, greater than 4.5%, greater than 5%, greater than 5.5%, greater than 6%, greater than 6.5%, greater than 7%, greater than 7.5%, greater than 8%, greater than 8.5%, greater than 9%, greater than 9.5%, greater than 10%, greater than 10.5%, greater than 11%, greater than 11.5%, greater than 12%, greater than 12.5%, greater than 13%, greater than 13.5%, greater than 14%, greater than 14. More than 5%, more than 15%, more than 15.5%, more than 16%, more than 16.5%, more than 17%, more than 17.5%, more than 18%, more than 18.5%, more than 19%, more than 19.5%, more than 20%, more than 20.5% or more than 21%, or it can be about 45%, less than 40%, less than 35%, less than 30%, less than 25%, less than 20%, less than 15%, less than 10% or less than 7%.

[0026] The uneven surface may be a surface having a 60 degree gloss in the range of 10% to 90%. The 60 degree gloss may be the 60 degree gloss on the uneven surface before or after the steel wool test described below. The 60 degree gloss may be measured in the manner disclosed in the embodiments described below. In another example, the 60 degree gloss may be 15% or more, 20% or more, 25% or more, 30% or more, 35% or more, 40% or more, 45% or more, 50% or more, 55% or more, 60% or more, or may be about 85% or less, 80% or less, 75% or less, 70% or less, 65% or less, 60% or less, 55% or less, or about 50% or less.

[0027] The uneven surface may exhibit excellent surface properties.

[0028] For example, the uneven surface may exhibit a pencil hardness of 5H or more. The pencil hardness may be measured according to the JIS5600 standard by drawing a pencil lead on the uneven surface of the film at a temperature of about 25°C and a relative humidity of 50% with a load of 500g and an angle of 45 degrees using a pencil hardness tester. The pencil hardness may be measured by gradually increasing the hardness of the pencil lead until defects such as notches, scratches or ruptures are confirmed to occur on the uneven surface of the film. In another example, the pencil hardness of the uneven surface may be about 6H or more, 7H or more, 8H or more, or 9H or more. The maximum value of the pencil hardness determined according to a known method for measuring pencil hardness is 9H. Therefore, the upper limit of the pencil hardness of the uneven surface may be 9H.

[0029] The uneven surface may exhibit 500g steel wool resistance of 1,500 times or more. Here, 500g steel wool resistance is a surface characteristic determined in a steel wool test. In another example, the 500g steel wool resistance of the uneven surface of the film may be about 2,000 times or more, 2,500 times or more, 3,000 times or more, 3,500 times or more, 4,000 times or more, 4,500 times or more, 5,000 times or more, 5,500 times or more, 6,000 times or more, 6,500 times or more, 7,000 times or more, 7,500 times or more, 8,000 times or more, 8,500 times or more, 9,000 times or more, or 9,500 times or more. Since the higher the value of steel wool resistance, the more excellent scratch resistance the uneven surface of the film exhibits, there is no particular restriction on its upper limit. In one example, the 500g steel wool resistance may be about 20,000 times or less, about 15,000 times or less, about 14,000 times or less, about 13,000 times or less, about 12,000 times or less, or about 11,000 times or less.

[0030] In the film of the present application, the uneven surface thus formed can exhibit durability capable of stably maintaining its shape.

[0031] For example, the uneven surface may satisfy any one, two, or all of the following Formulas 1 to 3.

[0032] [Formula 1]

[0033] 0.3≥ΔH=100×|(H A -H I ) / N|

[0034] [Formula 2]

[0035] 0.3≥ΔG=100×|(G A -G I ) / N|

[0036] [Formula 3]

[0037] 0.3≥ΔR=100×|(R A -R I ) / N|

[0038] In Formula 1 to Formula 3, ΔH, ΔG, and ΔR are the change rate of haze, the change rate of 60-degree glossiness, and the change rate of arithmetic mean roughness (Ra) of the uneven surface, respectively.

[0039] In formula 1, H I is the initial haze of the uneven surface (the haze before performing the steel wool test described below), H Ais the haze of the uneven surface after the steel wool test described below, N is the number of times the steel wool test has been performed, |(H A -H I ) / N| is obtained by converting H A , H I Substitute (H A -H I ) / N.

[0040] In Formula 2, G I is the initial 60 degree gloss of the uneven surface (the 60 degree gloss before performing the steel wool test described below), G A is the 60 degree gloss of the uneven surface after the steel wool test described below, N is the number of times the steel wool test has been performed, |(G A -G I ) / N| is by G A , G I Substitute (G A -G I ) / N.

[0041] In Formula 3, R I is the initial arithmetic mean roughness (Ra) of the uneven surface (arithmetic mean roughness before the steel wool test described below), R A is the arithmetic mean roughness (Ra) of the uneven surface after the steel wool test described below is performed, N is the number of times the steel wool test has been performed, |(R A -R I ) / N| is obtained by converting R A , R I Substitute (R A -R I ) / N.

[0042] The steel wool test performed to confirm the above formulas 1 to 3 is performed by a method of scratching an uneven surface with #0000 grade steel wool under a load of 500 g according to the method described in the embodiment described below. The scratching may be performed N times, which is a variable in the above formulas 1 to 3. In this case, N may be, for example, 1,000 or more, 1,100 or more, 1,200 or more, 1,300 or more, 1,400 or more, or may be 3,000 or less, 2,900 or less, 2,800 or less, 2,700 or less, 2,600 or less, 2,500 or less, 2,400 or less, 2,300 or less, 2,200 or less, 2,100 or less, 2,000 or less, 1,900 or less, 1,800 or less, 1,700 or less, 1,600 or less, or about 1,500 or less.

[0043] In another example, ΔH in Formula 1 may also be about 0.25 or less, about 0.2 or less, about 0.15 or less, about 0.1 or less, about 0.09 or less, about 0.08 or less, about 0.07 or less, about 0.06 or less, about 0.05 or less, about 0.04 or less, about 0.03 or less, about 0.02 or less, or about 0.01 or less. Since the lower the value of ΔH, the better the holding force of the uneven surface, there is no particular limitation on its lower limit. In one example, ΔH may be greater than 0, or greater than about 0.

[0044] In another example, ΔG in Formula 2 may also be about 0.25 or less, about 0.2 or less, about 0.15 or less, about 0.1 or less, about 0.09 or less, about 0.08 or less, about 0.07 or less, about 0.06 or less, about 0.05 or less, about 0.04 or less, about 0.03 or less, or about 0.02 or less. Since the lower the value of ΔG, the better the holding force of the uneven surface, there is no particular limitation on its lower limit. In one example, ΔG may be greater than 0, or greater than about 0.

[0045] In another example, the ΔR in Formula 3 may also be about 0.25 or less, about 0.2 or less, about 0.15 or less, about 0.1 or less, about 0.09 or less, about 0.08 or less, about 0.07 or less, about 0.065 or less, about 0.06 or less, about 0.055 or less, about 0.05 or less, about 0.045 or less, about 0.04 or less, about 0.035 or less, about 0.03 or less, about 0.025 or less, about 0.02 or less, about 0.015 or less, about 0.01 or less, about 0.009 or less, about 0.008 or less, about 0.007 or less, about 0.006 or less, about 0.005 or less, or about 0.004 or less. Since the lower the value of ΔR, the better the holding force of the uneven surface, there is no particular limit to its lower limit. In one example, ΔR may be greater than 0, or greater than about 0.

[0046] In order to form an uneven surface that exhibits a shape retention force that satisfies one or more of the above formulas 1 to 3, while exhibiting one or more physical properties selected from arithmetic mean roughness (Ra), haze, 60 degree gloss, pencil hardness, and 500g steel wool resistance, the so-called skewness of the uneven surface can be adjusted. Skewness is a numerical value indicating the degree of distribution deviation from symmetry and biased to one side, and for an uneven surface, it is a numerical value indicating the degree of symmetry of the surface height with respect to the average plane. When the skewness is positive, it indicates that the peak constituting the uneven surface is dominant, and when it is negative, it indicates that the valley constituting the uneven surface is dominant. The skewness can be determined according to the ISO 25178 standard using a known optical profiler or an AFM (atomic force microscope) instrument, etc.

[0047] The inventor has confirmed that by making the deflection of the uneven surface determined by ISO 25178 standards have a negative value, the desired characteristics of the uneven surface can be achieved. The deflection can be, for example, about more than -2 and less than 0. In another example, the deflection can be about more than -1.9, about more than -1.8, about more than -1.7, about more than -1.6, about more than -1.5, about more than -1.4, about more than -1.3, about more than -1.2, about more than -1.1, about more than -1.0 or about more than -0.9, or can be below -0.1, about below -0.2, about below -0.3, about below -0.4 or about below -0.5. Along with the deflection being adjusted to show the scope, the uneven surface wherein the shape realized according to the purpose is stably maintained can be formed.

[0048] In order to ensure such a skewness, a process is required in which the uneven shape of the film is transferred to the cured material layer using a so-called anti-glare film as a template. That is, an uneven surface formed with a so-called anti-glare film according to a known method for forming a known uneven surface exhibits a positive skewness, so that a surface to which a surface having the positive skewness is reversely transferred can exhibit a negative skewness. In addition, in the process of transfer to the reverse phase, the absolute value of the skewness is maintained within a similar range and the sign changes, and therefore, by controlling the skewness of the uneven surface used as a template, an uneven surface exhibiting an absolute value of a desired skewness in a negative region can be formed.

[0049] Therefore, the curing material layer can be formed by irradiating the energy beam curable composition layer with an energy beam under the state that the energy beam curable composition layer is in contact with the anti-glare film. In this way, a curing material layer satisfying the above-mentioned properties can be formed. Here, the energy beam curable composition layer is a layer formed using an energy beam curable composition, and can refer to, for example, a layer formed by coating or casting the energy beam curable composition onto a base film.

[0050] The term energy beam curable composition refers to a composition that is cured by irradiation with an energy beam. In the scope of the term energy beam, particle beams such as alpha particle beams, proton beams and neutron beams, as well as microwaves, infrared rays (IR), ultraviolet rays (UV), X-rays and gamma rays, etc. can be included. Typically, ultraviolet rays or electron beams are used as energy beams.

[0051] The term anti-glare film refers to a film including a surface formed to exhibit low reflectivity to at least a partial region of visible light or the entire visible light region. The surface formed to exhibit low reflectivity may be referred to as an anti-glare surface.

[0052] The anti-glare surface of the anti-glare film can have a variety of shapes, but generally has an uneven surface with a certain level of roughness, and the uneven surface of the anti-glare surface formed in a known manner has a positive deflection. In a state where the uneven surface of the anti-glare film is in contact with the energy beam-curable composition layer, the energy beam-curable composition can be cured by irradiating the layer with an energy beam, thereby forming a film with an uneven surface that meets the desired physical properties.

[0053] Through the above process, the uneven surface of the anti-glare film can be transferred to the surface of the solidified material layer, wherein the uneven surface transferred in this way increases the usability of the solidified material layer. For example, the solidified material layer transferred with the uneven surface can show low reflectivity for part or all of the visible light region alone, or can be combined with necessary layers to show low reflectivity. Therefore, this solidified material layer can be effectively used in various applications requiring low reflectivity and excellent physical properties as described above.

[0054] In the above process, the anti-glare surface contacted with the composition layer that may be energy beam cured can be an uneven surface as described above, and this uneven surface can be an uneven surface showing positive deflection. Uneven surface can also be determined by ISO 25178 standards. The uneven surface of anti-glare film can be greater than 0 and be about less than 2. In another example, deflection can be about less than 1.9, about less than 1.8, about less than 1.7, about less than 1.6, about less than 1.5, about less than 1.4, about less than 1.3, about less than 1.2, about less than 1.1, about less than 1.0 or about less than 0.9, or can be more than 0.1, about more than 0.2, about more than 0.3, about more than 0.4 or about more than 0.5. By applying the uneven surface with the deflection within the scope, the uneven surface with the desired deflection can be formed.

[0055] The arithmetic mean roughness (Ra) of the uneven surface of the anti-glare surface in contact with the composition layer that may be cured by energy beam can be in the range of about 0.01 μm to 2 μm. By applying the uneven surface with arithmetic mean roughness in the range as the anti-glare surface, a cured material layer with desired physical properties can be manufactured. The arithmetic mean roughness can be measured in the manner disclosed in the embodiments described below. In another example, the arithmetic mean roughness can be more than 0.05 μm, more than 0.1 μm, more than 0.15 μm, more than 0.2 μm or more than 0.25 μm, or it can be less than 1.8 μm, less than 1.6 μm, less than 1.4 μm, less than 1.2 μm, less than 1 μm, less than 0.9 μm, less than 0.8 μm, less than 0.7 μm, less than 0.6 μm, less than 0.5 μm or less than 0.4 μm.

[0056] The anti-glare surface in contact with the composition layer that may be energy beam cured can be a surface with a 60 degree glossiness in the range of 10% to 90%. By applying an uneven surface with a 60 degree glossiness in the range as an anti-glare surface, a cured material layer with desired physical properties can be manufactured. The 60 degree glossiness can be measured in a manner disclosed in the embodiments described below. In another example, the 60 degree glossiness can be more than 15%, more than 20%, more than 25%, more than 30%, more than 35%, more than 40% or more than 45%, or can also be less than 85%, less than 80%, less than 75% or less than 70%.

[0057] The anti-glare surface in contact with the composition layer that may be energy beam cured can be a surface showing a haze of 3% to 50%. By using an uneven surface with a haze within the range as an anti-glare surface, a cured material layer with desired physical properties can be manufactured. The haze can be measured in a manner disclosed in the embodiments described below. In another example, the haze can be more than 3.5%, more than 4%, or more than 4.5%, or can also be less than 45%, less than 40%, less than 35%, less than 30%, or less than 25%.

[0058] There is no particular limitation on the type of anti-glare film applicable in the present application, and for example, an anti-glare film having an uneven surface having the above-mentioned haze, 60-degree glossiness, and / or arithmetic mean roughness Ra may be applied.

[0059] In one suitable example, as the anti-glare film, a film having an anti-glare layer including a binder resin and particles can be used.

[0060] At this time, as the binder resin, a heat- or energy-beam-curable binder resin can be applied, and there is no particular restriction on its specific example, but it is advantageous to apply an energy-beam-curable binder resin in terms of process. There is no particular restriction on the type of applicable energy-beam-curable binder resin, but non-urethane multifunctional acrylate compounds can be applied to ensure appropriate effects. For example, as the compound, a compound with two or more curable functional groups (e.g., (meth) acryloyloxy, etc.) can be applied. The number of functional groups in the compound can also be about 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, or 3 or less. As such a compound, a multifunctional acrylate compound can be used, for example, a bifunctional acrylate such as 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, neopentyl glycol adipate di(meth)acrylate, hydroxypivalate neopentyl glycol di(meth)acrylate, dicyclopentyl di(meth)acrylate, caprolactone-modified dicyclopentenyl di(meth)acrylate, ethylene oxide-modified di(meth)acrylate, di(meth)acryloyloxyethyl isocyanurate, allylated cyclohexyl di(meth)acrylate, tricyclodecane dimethanol (meth)acrylate, dihydroxymethyl dicyclopentane di(meth)acrylate, ethylene oxide-modified hexahydrophthalic acid di(meth)acrylate, tricyclodecane dimethanol (meth)acrylate, neopentyl glycol-modified trimethylpropane di(meth)acrylate, adamantane di(meth)acrylate or 9,9-bis[4-(2-acryloyloxyethoxy)phenyl]fluorene; trifunctional acrylates such as trimethylolpropane tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, propionic acid-modified dipentaerythritol tri(meth)acrylate, pentaerythritol tri(meth)acrylate or propylene oxide-modified trimethylolpropane tri(meth)acrylate; tetrafunctional acrylates such as diglycerol tetra(meth)acrylate or pentaerythritol tetra(meth)acrylate; pentafunctional acrylates such as propionic acid-modified dipentaerythritol penta(meth)acrylate; and hexafunctional acrylates such as dipentaerythritol hexa(meth)acrylate or caprolactone-modified dipentaerythritol hexa(meth)acrylate, and among the above, one or two or more are selected and used in consideration of desired viscosity and physical properties.

[0061] An anti-glare layer may be applied in which a curable binder resin is applied in a state mixed with particles and cured by a curing method according to the type of resin. There is no particular restriction on the type of applicable particles, for example, organic polymer particles such as PMMA (poly(methyl methacrylate)) particles or PS (polystyrene) particles; or silica particles; or inorganic particles such as zirconium oxide particles, aluminum oxide particles or titanium dioxide particles, etc. may be applied. There is no particular restriction on the shape, average particle size and / or proportion of the particles, and particles with an appropriate shape and / or average particle size may be applied in an appropriate proportion in consideration of the desired 60 degree glossiness or haze, arithmetic mean roughness Ra, etc.

[0062] In addition to the above components, any necessary components, for example, silicone-based or fluorine-based slip agents or initiators, etc., may also be added to the anti-glare layer.

[0063] The anti-glare film may include a base film and an anti-glare layer formed on one side of the base film. At this time, as the base film, a base film having an appropriate transmittance for light with a wavelength of about 370nm, for example, a transmittance of more than 80% may be applied. That is, in most cases, a conventional anti-glare film has an ultraviolet shielding function, thereby exhibiting a low transmittance (less than 50%) for a wavelength of 370nm because it is present in the outermost part of the optical film, but in the present application, the anti-glare film is applied by a mold, and a film having a high transmittance to ultraviolet rays needs to be applied for ultraviolet curing process. Therefore, the above-mentioned transmittance can be applied. There is no particular restriction on the type of the base film, as long as it has transmittance, for example, among known polymer films, a polymer film exhibiting transmittance can be selected.

[0064] The step of irradiating with the energy beam may be performed in a state where the anti-glare surface of the anti-glare film is in contact with the energy beam-curable composition layer.

[0065] The energy beam curable composition layer in contact with the anti-glare film can be formed by casting or coating the energy beam curable composition. In this case, there is no particular restriction on the method of casting or coating, and a known method can be used, for example, such as gravure coating, roller coating, reverse coating, blade coating, die coating, lip coating, scraper coating, extrusion coating, slide coating, wire bar coating, shower coating or spin coating. In order to prevent gel-like attachments or foreign matter from occurring during casting, casting is carried out without irradiation with energy beams, and as required, the temperature of casting can also be appropriately controlled.

[0066] The thickness of the composition layer that can be cured by energy beam formed by a casting method or the like can be adjusted to an appropriate thickness in consideration of the type of composition, the type of functional group of the resin contained in the composition, the intended use, casting uniformity, and the formation of a planarization layer described below. The thickness of the formed layer can be in the range of about 1 μm to 1000 μm. In another example, the thickness can be greater than 5 μm, greater than 10 μm, greater than 15 μm, greater than 20 μm, greater than 25 μm, greater than 30 μm, or greater than 35 μm, or can be less than 900 μm, less than 800 μm, less than 700 μm, less than 600 μm, less than 500 μm, less than 400 μm, less than 300 μm, less than 200 μm, less than 100 μm, less than 90 μm, less than 85 μm, less than 80 μm, less than 75 μm, less than 70 μm, less than 65 μm, less than 60 μm, less than 55 μm, less than 50 μm, less than 45 μm, less than 40 μm, less than 35 μm, less than 30 μm, or less than 25 μm, but is not limited to this. For example, when a composition layer that can be energy beam-cured is formed on a base layer and a planarization layer described below is not formed on one surface of the base layer, the thickness of the formed layer can be further controlled by considering the shrinkage force of the composition layer that can be energy beam-cured, etc. When a composition layer that can be energy beam-cured is formed on one side of the base layer where a planarization layer is not formed, the thickness of the curable composition layer can be, for example, 35 μm or less. In another example, the thickness of the curable composition layer can be 33 μm or less, 31 μm or less, 29 μm or less, 27 μm or less, 25 μm or less, 23 μm or less, or 21 μm or less, or 5 μm or more, 10 μm or more, or 15 μm or more. Not only can the planarization layer be formed on the base layer as described above, but also the type of resin contained in the curable composition layer described below can be considered to control the thickness of the curable composition layer, so the thickness is not limited thereto.

[0067] Irradiating the energy beam to the composition that can be cured by an energy beam can be performed on a laminate manufactured by a method comprising the following steps: casting the composition that can be cured by an energy beam onto a base film to form a composition layer that can be cured by an energy beam; and laminating an anti-glare film on the composition layer that can be cured by an energy beam so that the anti-glare film is in contact with the composition layer that can be cured by an energy beam. At this time, as described above, the surface of the anti-glare film that is in contact with the composition layer that can be cured by an energy beam can be the above-mentioned anti-glare surface.

[0068] By applying the above method, the physical properties or quality uniformity of the prepared solidified layer can be more stably maintained.

[0069] The type of the base film is not particularly limited, and a base film having an appropriate surface smoothness can be applied. For example, as the base film, a film such as a polyester film; a polyolefin film such as polypropylene or polyethylene; or a norbornene resin film, an acetate film, an acrylic film, a fluoroethylene film, a polycarbonate film, a polyamide film, a polyarylate film, a cellophane, or a polyethersulfone film can be used alone, or two or more can be used in combination. Among these films, a suitable film can be selected in consideration of required heat resistance and transparency.

[0070] As the base film, a transparent film, for example, a film having a light transmittance of 80% or more or 85% or more can be used. The thickness of the base film is not particularly limited, but can be selected within the range of about 10 μm to 400 μm or 50 μm to 300 μm in consideration of resistance to tension applied during film production, warping or deformation of the laminate, or transmission efficiency of energy beams, etc.

[0071] As the base film, a film having a planarization layer formed on one side can be used. For example, in a base film having a planarization layer formed on one side, a composition layer that can be energy beam-cured can be formed on the side without the planarization layer. By using a base film having a planarization layer formed on one side, a film having excellent surface properties and not curling can be manufactured, while the composition layer that can be energy beam-cured is also formed of a resin and / or thickness described below.

[0072] There is no particular limitation on the material used to form the planarization layer. In one example, the planarization layer may be formed by coating an energy beam-curable composition applied to the formation of the film on a base film and curing the composition.

[0073] After casting the energy beam-curable composition on the base film and laminating the anti-glare surface of the anti-glare film on the cast energy beam-curable composition to prepare a laminate, the irradiation of the energy beam may be performed.

[0074] If necessary, the contact between the energy beam-curable composition layer and the anti-glare surface can also be performed by pressing them with a constant pressure.

[0075] The curing material layer can be manufactured by irradiating the anti-glare film with an energy beam in a state where the anti-glare film is in contact with the composition layer that can be cured by energy beam, so as to cure the composition in the above manner. At this time, there is no restriction on the irradiation direction of the energy beam, for example, the energy beam can be irradiated on the anti-glare film surface, or on the surface of the composition layer that can be cured by energy beam that is not in contact with the anti-glare film, or on both sides. Even when the energy beam is irradiated on the laminate (anti-glare film / composition layer that can be cured by energy beam / base film), the energy beam can also be irradiated from the anti-glare film surface, base film surface or both sides.

[0076] In one example, when irradiation of the energy beam is performed on the laminate, the energy beam may be irradiated to the energy beam-curable composition layer through the base film.

[0077] For example, when irradiating ultraviolet rays as the energy beam, ultraviolet rays generated by an ultraviolet lamp may be used. As the ultraviolet lamp, a metal halide lamp, a high-pressure mercury lamp, a low-pressure mercury lamp, a pulsed xenon lamp, a xenon / mercury mixture lamp, a low-pressure germicidal lamp and / or an electrodeless lamp may be used. The irradiation conditions may be determined based on the composition of the composition that may be cured by the energy beam, etc., and generally, the irradiation may be performed so that the exposure amount is about 0.01 mJ / cm 2 Up to 10mJ / cm 2 In another example, the amount of energy exposed can be about 0.05 mJ / cm 2 Above, 0.1mJ / cm 2 Above, 0.5mJ / cm 2 Above, 1mJ / cm 2 Above or 1.5mJ / cm 2 or above, or 9 mJ / cm 2 Below, 8mJ / cm 2 Below, 7mJ / cm 2 Below, 6mJ / cm 2 Below or 5mJ / cm 2 Below left and right.

[0078] There is no particular restriction on the temperature at which such energy beam irradiation is performed. Typically, energy beam irradiation is performed at room temperature (within the range of 15°C to 35°C), but the relevant temperature can be adjusted as needed, in which case a heating / cooling device or the like can also be applied during the energy beam irradiation process.

[0079] Although there is no particular limitation on the type of energy beam curable composition used in the present application, a composition having castable fluidity or plasticity and energy beam curability can be used in consideration of casting, coating efficiency, desired surface properties and / or curing shrinkage before and after curing, etc. If necessary, the curing shrinkage can also be controlled within an appropriate range to prevent warping or deformation caused by curing shrinkage before and after curing, etc. Typically, an energy beam curable composition having a volume shrinkage before and after curing in the range of 3% to 10% can be used.

[0080] For example, as the energy beam curable composition, a so-called acrylic energy beam curable composition, a silicone energy beam curable composition or an epoxy energy beam curable composition of an appropriate type can be selected and used. In addition, a solvent-free composition can be applied in consideration of process efficiency or film performance.

[0081] As a composition that can be cured by an energy beam, for example, a composition containing at least a silicone resin component and an active diluent can be used.

[0082] There is no particular limitation on the type of the applied silicone resin component, but in order to more effectively meet the desired physical properties, a silicone resin component represented by the following average unit formula 1 can be applied.

[0083] [Average unit formula 1]

[0084] (R 1 3SiO 1 / 2 ) a (R 2 2SiO 2 / 2 ) b (R 3 SiO 3 / 2 ) c (SiO 4 / 2 ) d (RO 1 / 2 ) e

[0085] In the average unit formula 1, R 1 to R 3 are each independently a hydrogen atom, an alkyl group, an aryl group, or an energy beam curable group, and when there are multiple R 1 to R 3 , they are each the same as or different from each other, and at least one of R 1 to R 3 is an energy beam curable group. When a + b + c + d is converted to 1, a, b, c, and d respectively satisfy 0 ≤ a ≤ 1, 0 < b ≤ 1, 0 < c ≤ 1, and 0 ≤ d ≤ 1, and e is a value such that e / (a + b + c + d) falls within the range of 0 to 0.4. The energy beam curable group can be, for example, a free radical curable group or a cation curable group, and considering the achievement of the desired physical properties, etc., it is preferably a free radical curable group.

[0086] The average unit represents the average ratio of the monomer units contained in the silicone resin component, that is, the so-called average ratio of M, D, T, and Q units. Among them, the description that the silicone resin component represents the above average unit formula 1 can refer to the case where the component contains one polymer component (silicone resin) containing monomer units in accordance with the ratio of the above average unit formula 1, or the case where the component contains two or more polymer components (silicone resins), and the average value of all the monomer units contained in the two or more components is defined by the above average unit formula 1.

[0087] When a+b+c+d is converted to 1 in the above average unit formula 1, a and d can also be each independently about 0.95 or less, 0.9 or less, 0.85 or less, 0.8 or less, 0.75 or less, 0.7 or less, 0.65 or less, 0.6 or less, 0.55 or less, 0.5 or less, 0.45 or less, 0.4 or less, 0.35 or less, 0.3 or less, 0.25 or less, 0.2 or less, 0.15 or less, 0.1 or less, or about 0.05 or less.

[0088] When a+b+c+d is converted to 1 in the above average unit formula 1, b in another example may be greater than 0.01, greater than 0.02, greater than 0.03, greater than 0.04, greater than 0.05, greater than 0.06, greater than 0.07, greater than 0.08, greater than 0.09, greater than 0.1, greater than 0.15, greater than 0.2, or greater than 0.25, or may be less than 0.95, less than 0.9, less than 0.85, less than 0.8, less than 0.75, less than 0.7, less than 0.65, less than 0.6, less than 0.55, less than 0.5, less than 0.45, less than 0.4, less than 0.35, less than 0.3, or less than 0.25.

[0089] When a+b+c+d is converted to 1 in the above average unit formula 1, c can be greater than 0.1, greater than 0.15, greater than 0.2, greater than 0.25, greater than 0.3, greater than 0.35, greater than 0.4, greater than 0.45, greater than 0.5, greater than 0.55, greater than 0.6, greater than 0.65, greater than 0.7 or greater than 0.75, or can be approximately less than 0.95, less than 0.9, less than 0.85, less than 0.8 or less than 0.75.

[0090] In the average unit formula 1, RO 1 / 2 It may refer to a condensable functional group bonded to a silicon atom. That is, in one example, the organic silicone resin component may be prepared by condensing a condensable silane compound, wherein the remaining condensable functional group that has not reacted in the process may be formed by RO 1 / 2 express.

[0091] In the average unit formula 1, e may be a value such that e / (a+b+c+d) is in the range of 0 to 0.4. In another example, e / (a+b+c+d) may also be about 0.35 or less, about 0.3 or less, about 0.25 or less, about 0.2 or less, about 0.15 or less, about 0.1 or less, or about 0.05 or less.

[0092] In the average unit formula 1, R 1 To R 3Each is a functional group directly bonded to a silicon atom, they may each exist in plural numbers in the silicone resin component represented by the average unit formula 1, and when they exist in plural numbers, they may be the same or different. 1 To R 3 R can be independently a hydrogen atom, an alkyl group, an aryl group or a functional group capable of energy beam curing. 1 To R 3 At least one of them is a functional group capable of energy beam curing, and for example, at least R 3 (In multiple R 3 In the case of at least one R 3 ) may be a functional group capable of energy beam curing.

[0093] In the above average unit formula, R 2 It may suitably be an alkyl group.

[0094] Here, the functional group that may be energy beam cured may be, for example, a so-called free radical curable functional group or a cation curable functional group. Typically, free radical curable functional groups include alkenyl, (meth) acryloyl, (meth) acryloyloxy, (meth) acryloyl alkyl or (meth) acryloyloxyalkyl, etc., and cation curable functional groups may be exemplified as epoxy. The term epoxy may refer to a monovalent residue from a cyclic ether having three ring atoms or a compound containing the cyclic ether. Epoxy may be exemplified as glycidyl, epoxyalkyl, glycidyloxyalkyl or alicyclic epoxy, etc. Here, alicyclic epoxy may refer to a monovalent residue from a compound including an aliphatic hydrocarbon ring structure and a structure in which two carbon atoms forming an aliphatic hydrocarbon ring also form an epoxy. As an alicyclic epoxy, an alicyclic epoxy having 6 to 12 carbon atoms may be exemplified, and for example, 3,4-epoxycyclohexylethyl, etc. may be exemplified.

[0095] The energy beam curable functional group may preferably be a radical curable functional group. In the case of a resin containing a cation curable functional group, polymerization is performed by a ring-opening reaction, and therefore, there is almost no volume reduction due to curing, etc., while in the case of a resin containing a radical curable functional group, it has a high atomic density and shrinks by curing, etc., thereby being more suitable for achieving desired physical properties.

[0096] In all R 1 To R 3In the embodiment of the present invention, the functional group capable of energy beam curing may be present in a ratio of about 50 mol %, about 55 mol %, about 60 mol %, about 65 mol %, about 70 mol %, about 75 mol %, about 80 mol %, about 85 mol %, about 90 mol % or about 95 mol %. There is no particular limit on the upper limit of the ratio of the functional group capable of energy beam curing, for example, the ratio of the functional group may be about 100 mol %, about 95 mol %, about 90 mol %, about 85 mol %, about 80 mol %, about 75 mol % or about 70 ...

[0097] The weight average molecular weight (Mw) of the silicone resin component can be in the range of 10,000 to 50,000. The weight average molecular weight can be a conversion value of standard polystyrene measured by so-called GPC (gel permeation chromatography). In another example, the weight average molecular weight can be about 11000 g / mol or more, 12000 g / mol or more, 13000 g / mol or more, 14000 g / mol or more, 15000 g / mol or more, 16000 g / mol or more, 17000 g / mol or more, 18000 g / mol or more, 19000 g / mol or more, 20000 g / mol or more, 21000 g / mol or more, 22000 g / mol or more, 23000 g / mol or more. l or more, 24000 g / mol or more, 25000 g / mol or more, 26000 g / mol or more, 27000 g / mol or more, 28000 g / mol or more, 29000 g / mol or more, or about 45000 g / mol or less, 40000 g / mol or less, 35000 g / mol or less, 30000 g / mol or less, 25000 g / mol or less, or about 20000 g / mol or less.

[0098] The molecular weight distribution (PDI, Mw / Mn) of the silicone resin component, i.e., the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn), may also be about 1.8 or more. In another example, the molecular weight distribution may be 1.9 or more, 2.0 or more, 2.1 or more, 2.2 or more, or 3.0 or less, 2.9 or less, 2.8 or less, 2.7 or less, 2.6 or less, 2.5 or less, or 2.4 or less.

[0099] The silicone resin component having the above average unit and having the above molecular weight characteristics can effectively form a cured material layer having desired physical properties.

[0100] In order to manufacture the silicone resin component, a polymerization process for condensing the so-called condensable silane compound (e.g., alkoxysilane compound) and a molecular weight control process after the polymerization process are required. Here, various methods for preparing silicone resin components by condensing condensable silane compounds are known, and generally, only such a condensation process is performed to prepare the silicone resin component. However, it is difficult to ensure the molecular weight characteristics of the above level simply by polymerization through the above condensation process. Therefore, an appropriate molecular weight control process is required after the condensation process.

[0101] The molecular weight control process can be, for example, carried out simultaneously at a predetermined temperature while keeping the polymerized reaction product under reduced pressure. In the process, when removing the solvent, low molecular weight components and / or unreacted substances contained in the polymerized reaction product, the molecular weight can be adjusted to a desired level. Here, the reduced pressure conditions are not particularly limited, but the reduced pressure process can be carried out under a vacuum degree of about 50 torr to 90 torr. In another example, the vacuum degree can be about 55 torr or more, about 60 torr or more, or about 65 torr or less, or about 85 torr or less, about 80 torr or less, or about 75 torr or less.

[0102] The decompression process can be carried out under a predetermined temperature curve. For example, the decompression process can include a first step of maintaining the vacuum degree at the level within a temperature range of about 30°C to 70°C, and a second step of maintaining the vacuum degree at the level while maintaining the temperature within a range of 60°C to 100°C after the first step. In the first step, if the above-mentioned vacuum degree is maintained while maintaining the temperature within a range of about 30°C to 70°C, the temperature is reduced by decompression, and generally, the temperature is reduced to a level of about 10°C to 30°C. Therefore, when the temperature is reduced as described above, the temperature is raised to the level of the second step again, and the molecular weight control process is further performed. In another example, the temperature of the first step can be about 35°C or more, 40°C or more, or can be 65°C or less, 60°C or less, or 55°C or less, and in another example, the temperature of the second step can be about 65°C or more, 70°C or more, or 75°C or more, or can be about 95°C or less, about 90°C or less, or 85°C or less. Furthermore, in the first step, as described above, a process of substantially lowering the temperature from a temperature in the range of about 30° C. to 70° C. to a level of about 10° C. to 30° C. under the above-mentioned vacuum degree may be performed. There is no particular limitation on the time for performing the first step and the second step, but in order to ensure an appropriate level of molecular weight, the first step may be performed for about 1 hour to 5 hours, and the second step may be performed for about 10 minutes to 60 minutes.

[0103] There is no particular limitation on the method of obtaining a polymerized reaction product suitable for the molecular weight control process. Various methods of preparing silicone resins using condensable compounds such as alkoxysilanes are known in the industry, and all of these methods can be applied to the present application.

[0104] In order to advantageously ensure a desired appropriate molecular weight in the subsequent molecular weight control process, as a polymerization process, a method of polymerizing a condensable silane such as alkoxysilane in an aqueous solvent and a mixed solvent of alcohol, ketone and / or acetate by using a base catalyst may be applied.

[0105] In the above process, known compounds can be used as the alkoxysilane.

[0106] Here, suitable aqueous solvents include, for example, water, wherein the aqueous solvent can be used in a ratio of about 0.1 mol to 10 mol per mol of all condensable silane compounds (e.g., alkoxysilane) for polymerization. In another example, the ratio of the aqueous solvent can be about 0.5 mol or more, about 1 mol or more, about 1.5 mol or more, about 2 mol or more, or about 2.5 mol or more, or about 9 mol or less, about 8 mol or less, about 7 mol or less, about 6 mol or less, about 5 mol or less, about 4 mol or less, or about 3 mol or less.

[0107] Here, applicable alcohol can be exemplified as ethanol, n-propanol, isopropanol, isobutanol, n-butanol and / or tert-butanol, etc., ketone solvent can be exemplified as acetone, methyl ethyl ketone, methyl isobutyl ketone, dimethyl ketone, methyl isopropyl ketone and / or acetylacetone, etc., and acetate solvent can be exemplified as methyl acetate, ethyl acetate, propyl acetate and / or butyl acetate, etc., without being limited thereto. Such alcohol, ketone or acetate solvent can be applied in a ratio of about 0.1 mole to 10 moles per mole of all condensable silane compounds (e.g., alkoxysilane) for polymerization. In another example, the ratio of alcohol, ketone or acetate solvent can be about 0.5 mole or more, about 1 mole or more, about 1.5 moles or more, about 2 moles or more, or about 2.5 moles or more, or about 9 moles or less, about 8 moles or less, about 7 moles or less, about 6 moles or less, about 5 moles or less, about 4 moles or less, or about 3 moles or less.

[0108] As the base catalyst used in the above method, for example, an amine compound having a pKa of 15 or less, etc. can be used. In another example, the pKa of the amine compound may be about 14.5 or less, about 14 or less, about 13.5 or less, about 13 or less, about 12.5 or less, about 12 or less, about 11.5 or less, about 11 or less, or about 10.5 or less, or may be about 1 or more, about 2 or more, about 3 or more, about 4 or more, about 5 or more, about 6 or more, about 7 or more, about 8 or more, about 9 or more, or about 10 or more, but is not limited thereto. As the amine compound, for example, a trialkylamine such as triethylamine can be used, but is not particularly limited as long as the pKa is within the above range.

[0109] The amine compound may be used in a ratio of about 0.0001 to 0.1 moles per mole of the total condensable silane compound (e.g., alkoxysilane). In another example, the ratio may be about 0.0005 moles or more, about 0.0007 moles or more, about 0.0009 moles or more, or about 0.01 moles or more, or about 0.09 moles or less, about 0.08 moles or less, about 0.07 moles or less, about 0.06 moles or less, about 0.05 moles or less, about 0.04 moles or less, about 0.03 moles or less, or about 0.02 moles or less.

[0110] For example, the polymerization product can be obtained by maintaining the mixture of these components in a temperature range of about 50° C. to 110° C. for about 8 hours to about 16 hours. In another example, the polymerization temperature can be about 55° C. or more, about 60° C. or more, about 65° C. or more, about 70° C. or more, or about 105° C. or more, about 100° C. or more, about 95° C. or more, about 90° C. or more, or about 85° C. or more. In another example, the polymerization time can be about 9 hours or more, about 10 hours or more, or about 11 hours or more, or about 15 hours or less, about 14 hours or less, or about 13 hours or less.

[0111] In the case where the polymer product polymerized in the above-described manner is introduced into a molecular weight control process, desired molecular weight properties can be more effectively ensured.

[0112] The energy beam curable composition may contain a reactive diluent together with the components. The reactive diluent may allow the casting process to be properly performed by adjusting the viscosity and the like of the composition to an appropriate range.

[0113] As the reactive diluent, known components may be used without particular limitation. Suitable reactive diluents are known depending on the curing type (eg, radical curing type or cationic curing type, etc.) of the energy beam-curable composition.

[0114] In one example, when the silicone resin component contains a free radical-curable functional group (e.g., an alkenyl group, a (meth)acryloyl group, a (meth)acryloyloxy group, a (meth)acryloylalkyl group, a (meth)acryloyloxyalkyl group, etc.) as an energy beam-curable functional group, various acrylate compounds can be used as reactive diluents.

[0115] As such an acrylate compound, a multifunctional acrylate compound can be used, for example: an alkyl (meth)acrylate such as methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, tert-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate or tetradecyl (meth)acrylate; a hydroxyalkyl (meth)acrylate such as 2-hydroxyethyl (meth)acrylate; Ester, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate or 8-hydroxyoctyl (meth)acrylate; difunctional acrylates such as 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, neopentyl glycol adipate di(meth)acrylate, hydroxypivalate neopentyl glycol di(meth)acrylate, dicyclopentyl di(meth)acrylate, caprolactone-modified dicyclopentenyl di(meth)acrylate, ethylene oxide-modified di(meth)acrylate, di(meth)acryloyloxyethyl isocyanurate, allyl cyclohexyl di(meth)acrylate, tricyclodecane dimethanol (meth)acrylate, dimethylol dicyclopentane di(meth)acrylate, ethylene oxide-modified hexahydrophthalic acid di(meth)acrylate, tricyclodecane dimethanol (meth)acrylate, neopentyl glycol-modified trimethyl propane di(meth)acrylate, adamantane di(meth)acrylate or 9,9-bis[4-(2-acryloyloxyethoxy)phenyl]fluorene; trifunctional acrylates such as trimethylol propane tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, propionic acid-modified dipentaerythritol tri(meth)acrylate, pentaerythritol tri(meth)acrylate, propylene oxide-modified trimethylol propane tri(meth)acrylate, trifunctional urethane (meth)acrylate or tri(meth)acryloyloxyethyl isocyanurate; tetrafunctional acrylate, such as diglycerol tetra(meth)acrylate or pentaerythritol tetra(meth)acrylate; pentafunctional acrylate, such as propionic acid-modified dipentaerythritol penta(meth)acrylate; and hexafunctional acrylate, such as dipentaerythritol hexa(meth)acrylate, caprolactone-modified dipentaerythritol hexa(meth)acrylate or urethane (meth)acrylate (for example, a reactant of an isocyanate monomer and trimethylolpropane tri(meth)acrylate), wherein one or two or more may be selected and used in consideration of desired viscosity and physical properties, etc.

[0116] In another example, when the silicone resin component includes a cation-curable functional group (eg, epoxy group, etc.) as an energy beam-curable functional group, an epoxy compound or an oxetane compound may be used as a reactive diluent.

[0117] Various epoxy or oxetane compounds that can be used as reactive diluents in the cationically curable composition are known in the art, and such known reactive diluents can be used without limitation.

[0118] For example, the epoxy compound or oxetane compound that can be used as the reactive diluent can be exemplified by bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, brominated bisphenol A diglycidyl ether, brominated bisphenol F diglycidyl ether, brominated bisphenol S diglycidyl ether, epoxy novolac resin, hydrogenated bisphenol A diglycidyl ether, hydrogenated bisphenol F diglycidyl ether, hydrogenated bisphenol S diglycidyl ether, 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, 2-(3,4-epoxycyclohexyl-5,5-spiro-3,4-epoxy)-cyclohexane-1,4-dioxane, bis(3,4-epoxycyclohexylmethyl)adipate, vinyl cyclohexene oxide, 4-vinyl cyclohexene oxide, vinyl cyclohexene dioxide (vinylcyclohexene oxide), carbonyl chloride, bis(3,4-epoxy-6-methylcyclohexylmethyl) adipate, 3,4-epoxy-6-methylcyclohexyl-3',4'-epoxy-6'-methylcyclohexanecarboxylate, ε-caprolactone-modified 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, trimethylcaprolactone-modified 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, β-methyl-δ-valerolactone-modified 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, methylenebis(3,4-epoxycyclohexane), biscyclohexyl-3,3'-epoxide; F3)2-, -C(CCl3)2- or -CH(C6H5)-bond-bis(3,4-epoxycyclohexyl); dicyclopentadiene diepoxide, ethylene glycol di(3,4-epoxycyclohexyl methyl) ether, ethylene bis(3,4-epoxycyclohexanecarboxylate), epoxyhexahydrodioctylphthalate, epoxyhexahydro-di-2-ethylhexylphthalate, 1,4-butanediol diglycidyl ethers, 1,6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether, glycerol triglycidyl ether, trimethylolpropane triglycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, diglycidyl esters of aliphatic long-chain dibasic acids, monoglycidyl ethers of aliphatic higher alcohols; monoglycidyl ethers of polyether alcohols obtained by adding alkylene oxides to phenol, cresol, butylphenol or these compounds;Glycidyl esters of higher fatty acids, epoxidized soybean oil, epoxybutyl stearic acid, epoxyoctyl stearic acid, epoxidized linseed oil, epoxidized polybutadiene, 1,4-bis[(3-ethyl-3-oxetanylmethoxy)methyl]benzene, 3-ethyl-3-hydroxymethyloxetane, 3-ethyl-3-(3-hydroxypropyl)oxymethyloxetane, 3-ethyl-3-(4-hydroxybutyl)oxymethyloxetane, 3-ethyl-3-(5-hydroxypentyl)oxymethyloxetane , 3-ethyl-3-phenoxymethyloxetane, bis((1-ethyl(3-oxetanyl)methyl)ether, 3-ethyl-3-((2-ethylhexyloxy)methyl)oxetane, 3-ethyl-((triethoxysilylpropoxymethyl)oxetane, 3-(methyl)allyloxymethyl-3-ethyloxetane, 3-hydroxymethyl-3-ethyloxetane, (3-ethyl-3-oxetanylmethoxy)methylbenzene, 4-fluoro-[1-(3- ethyl-3-oxetanylmethoxy)methyl]benzene, 4-methoxy-[1-(3-ethyl-3-oxetanylmethoxy)methyl]-benzene, [1-(3-ethyl-3-oxetanylmethoxy)ethyl]phenyl ether, isobutoxymethyl (3-ethyl-3-oxetanylmethyl) ether, 2-ethylhexyl (3-ethyl-3-oxetanylmethyl) ether, ethyl diglycol (3-ethyl-3-oxetanylmethyl) ether, dicyclopentadiene (3-ethyl -3-oxetanylmethyl) ether, dicyclopentenyloxyethyl (3-ethyl-3-oxetanylmethyl) ether, dicyclopentenyl (3-ethyl-3-oxetanylmethyl) ether, tetrahydrofurfuryl (3-ethyl-3-oxetanylmethyl) ether, 2-hydroxyethyl (3-ethyl-3-oxetanylmethyl) ether or 2-hydroxypropyl (3-ethyl-3-oxetanylmethyl) ether, or a combination of two or more selected from the above substances, but not limited thereto. ;

[0119] The proportion of the reactive diluent used in the energy beam curable composition is adjusted in consideration of the desired viscosity, etc., and is not particularly limited, but the reactive diluent can be generally used in a proportion of 1 to 200 parts by weight relative to 100 parts by weight of the silicone resin component. In another example, the proportion may be 3 parts by weight or more, 5 parts by weight or more, 7 parts by weight or more, or 190 parts by weight or less, 180 parts by weight or less, 170 parts by weight or less, 160 parts by weight or less, 150 parts by weight or less, 140 parts by weight or less, 130 parts by weight or less, 120 parts by weight or less, 110 parts by weight or less, 100 parts by weight or less, 90 parts by weight or less, 80 parts by weight or less, 70 parts by weight or less, 60 parts by weight or less, 50 parts by weight or less, 40 parts by weight or less, 30 parts by weight or less, or about 20 parts by weight or less.

[0120] The energy beam curable composition may include a silicone resin component and a reactive diluent as basic components, and may also include necessary additional components. Such additive components may be exemplified by initiators, dispersants, surfactants, antistatic agents, silane coupling agents, thickeners, anti-coloring agents, colorants (pigments, dyes), defoamers, leveling agents, flame retardants, ultraviolet absorbers, adhesion imparting agents, polymerization inhibitors, antioxidants and / or surface modifiers that can initiate the curing of the energy beam curable composition, but are not limited thereto.

[0121] As an additional component that can be included in the energy beam curable composition, scattering particles for haze control are also included. These particles generally have a particle size capable of scattering light, wherein particles having a refractive index different from that of the surrounding matrix can be additionally applied, and particles having a particle size and a refractive index of an appropriate level can be used in consideration of the desired haze.

[0122] By applying such an energy beam-curable composition to the above-mentioned method to prepare a cured material layer, a cured material layer having desired physical properties can be manufactured.

[0123] The film of the present application may include a base film in which a solidified material layer is formed on one side. The base film may be the base film used in the above-mentioned manufacturing method.

[0124] As described above, a known film can be applied as a base film without particular limitation, but in order to more effectively meet the desired physical properties, a polymer film having mechanical and / or thermal anisotropy can be applied. In this specification, a polymer film that is mechanically and / or thermally anisotropic can be referred to as an asymmetric polymer film. Here, the polymer film being anisotropic in mechanical properties refers to the case where it has the elongation, stress, and elastic modulus characteristics described below, and thermal anisotropy refers to the case where it has the thermal expansion coefficient described below.

[0125] The measurements of the physical properties of each polymer film mentioned in the present specification are measured according to the methods described in the Example section of the present specification.

[0126] As such a polymer film, a film referred to as a so-called high-stretched PET (poly(ethylene terephthalate)) film or SRF (super retardation film) is generally known. Therefore, in the present application, the polymer film may be, for example, a polyester film.

[0127] Such films are known in the art, wherein due to the high stretching process during production, these films exhibit asymmetry in terms of mechanical and / or thermal properties. Conventional examples of polymer films known in the industry are polyester films such as PET (polyethylene terephthalate) films, for example, films of the SRF (Super Retardation Film) series offered by Toyobo.

[0128] In one example, the ratio (E1 / E2) of the film (including the solidified layer / base film or including the solidified material layer / base film / planarization layer) (E1) in the first direction in any plane of the polymer film to the film (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) (E2) in the second direction perpendicular to the first direction may be 3 or more. In another example, the ratio (E1 / E2) may be about 3.5 or more, 4 or more, 4.5 or more, 5 or more, 5.5 or more, 6 or more, or 6.5 or more. In another example, the ratio (E1 / E2) may be about 20 or less, 18 or less, 16 or less, 14 or less, 12 or less, 10 or less, 8 or less, or 7.5 or less.

[0129] In this specification, the first direction and the second direction of the term polymer film are any directions in the plane of the film substrate. For example, when the polymer film is a stretched polymer film, the in-plane direction can be the in-plane direction formed by the MD (longitudinal) direction and the TD (transverse) direction of the polymer film. In one example, the first direction described in this specification can be any one of the slow axis direction and the fast axis direction of the polymer film, and the second direction can be the other direction in the slow axis direction and the fast axis direction. In another example, when the polymer film is a stretched polymer film, the first direction can be any one of the MD (longitudinal) direction and the TD (transverse) direction, and the second direction can be the other direction in the MD (longitudinal) direction and the TD (transverse) direction.

[0130] The elongation of the polymer film in the first direction (e.g., the slow axis direction or TD direction) may be 15% or more, 20% or more, 25% or more, 30% or more, 35% or more, or 40% or more. In another example, the elongation may be about 60% or less, 55% or less, 50% or less, or 45% or less.

[0131] The ratio (CTE2 / CTE1) of the thermal expansion coefficient (CTE2) of the polymer film in the second direction to the thermal expansion coefficient (CTE1) in the first direction may be 1.5 or more. The thermal expansion coefficients (CTE1, CTE2) are each a numerical value determined in a temperature range of 40° C. to 80° C. In another example, the ratio (CTE2 / CTE1) may be about 2 or more, or may be about 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, or 3 or less.

[0132] The coefficient of thermal expansion in the second direction (CTE2) may be in the range of 5 ppm / K to 150 ppm / K. The coefficient of thermal expansion may be about 10 ppm / K or more, 15 ppm / K or more, 20 ppm / K or more, 25 ppm / K or more, 30 ppm / K or more, 35 ppm / K or more, 40 ppm / K or more, 45 ppm / K or more, 50 ppm / K or more, about 55 ppm / K or more, 60 ppm / K or more, or 140 ppm / K or less, 130 ppm / K or less, 120 ppm / K or less, 100 ppm / K or less, 95 ppm / K or less, 90 ppm / K or less, 85 ppm / K or less, 80 ppm / K or less, 75 ppm / K or less, or 70 ppm / K or less.

[0133] The ratio (YM1 / YM2) of the elastic modulus (YM1) of the polymer film in the first direction to the elastic modulus (YM2) in the second direction may be 1.5 or more. In another example, the ratio (YM1 / YM2) may be about 2 or more, or may be 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, 3 or less, or 2.5 or less.

[0134] The elastic modulus (YM1) in the first direction may be in the range of about 2 GPa to 10 GPa. In another example, the elastic modulus (YM1) may be about 2.5 GPa or more, 3 GPa or more, 3.5 GPa or more, 4 GPa or more, 4.5 GPa or more, 5 GPa or more, or about 9.5 GPa or less, 9 GPa or less, 8.5 GPa or less, 8 GPa or less, 7.5 GPa or less, 7 GPa or less, 6.5 GPa or less, or 6 GPa or less.

[0135] Unless otherwise specified, the elastic modulus referred to in the present specification is the so-called Young's modulus, which is measured according to the method of Examples described below.

[0136] The ratio (MS1 / MS2) of the maximum stress (MS1) in the first direction to the maximum stress (MS2) in the second direction of the polymer film may be 1.5 or more. In another example, the ratio (MS1 / MS2) may be about 2 or more, or may be 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, 3 or less, or 2.5 or less.

[0137] The maximum stress (MS1) in the first direction (for example, the above-mentioned slow axis direction or TD direction) may be in the range of about 80 MPa to 300 MPa. In another example, the maximum stress (MS1) may be about 90 MPa or more, about 100 MPa or more, about 110 MPa or more, about 120 MPa or more, about 130 MPa or more, about 140 MPa or more, about 150 MPa or more, about 155 MPa or more, 160 MPa or more, 165 MPa or more, 170 MPa or more, 175 MPa or more, 180 MPa or more, 185 MPa or more, 190 MPa or more, or 196 MPa or more. The pressure may be above 5MPa, or may be below about 300MPa, below about 290MPa, below about 280MPa, below about 270MPa, below about 260MPa, below about 250MPa, below about 245MPa, below 240MPa, below 235MPa, below 230MPa, below 225MPa, below 220MPa, below 215MPa, below 210MPa, below 205MPa or below 200MPa.

[0138] As described above, representative examples of such polymer films having large optical, mechanical and / or thermal asymmetry are stretched PET (polyethylene terephthalate) films known as so-called highly stretched polyester films and the like, wherein these films are easily available industrially.

[0139] A film in which a solidified material layer is formed on one side of a polymer film (base film) (including base film + solidified material layer), or a film in which a solidified material layer is formed on one side of a base film and a planarization layer is formed on the other side (including planarization layer + base film + solidified material layer) may be equivalent to a polymer film (base film), or may exhibit asymmetry controlled thereby.

[0140] For example, the ratio (EF1 / EF2) of the film (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) in the first direction in any plane (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) (EF1) to the film (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) in the second direction perpendicular to the first direction can be 1.5 or more. In another example, the ratio (EF1 / EF2) can be about 2 or more, 2.5 or more, 3 or more, or 3.5 or more. In another example, the ratio (EF1 / EF2) can be about 20 or less, 18 or less, 16 or less, 14 or less, 12 or less, 10 or less, 8 or less, 7.5 or less, 7 or less, 6.5 or less, 6 or less, 5.5 or less, 5 or less, 4.5 or less, 4 or less, 3.5 or less, or 3 or less.

[0141] The first direction and the second direction mentioned in this specification when describing the mechanical and / or thermal properties of a film (including a cured material layer / base film or including a cured material layer / base film / planarization layer) may be the same directions as the first direction and the second direction described when referring to the mechanical and / or thermal properties of a polymer film (base film), respectively.

[0142] Here, the elongation (EF1) of the film (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) in the first direction may be 1.5% or more, 2% or more, 2.5% or more, 3% or more, 3.5% or more, 4% or more, 4.5% or more, 5% or more, 5.5% or more, or 6% or more. The elongation may be about 20% or less, 15% or less, 10% or less, or 5% or less.

[0143] The ratio (E1 / EF1) of the elongation (E1) of the polymer film in the first direction to the elongation (EF1) of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) (EF1) in the first direction can be, for example, in the range of about 2 to 20. In another example, the ratio (E1 / EF1) can be about 2.5 or more, about 3 or more, about 3.5 or more, about 4 or more, about 4.5 or more, about 5 or more, about 5.5 or more, about 6 or more, about 6.5 or more, about 7 or more, about 7.5 or more, about 8 or more, about 8.5 or more, about 9 or more, about 9 or more, about 9.5 or more, or about 19 or less, 18 or less, 17 or less, 16 or less, 15 or less, 14 or less, 13 or less, 12 or less, 11 or less, 10 or less, 9 or less, 8 or less, or 7 or less.

[0144] The ratio (CTEF2 / CTEF1) of the thermal expansion coefficient (CTEF2) of the film (including the solidified material layer / base film or including the solidified material layer / base film / planarization layer) in the second direction to the thermal expansion coefficient (CTEF1) in the first direction may be 1.5 or more. The thermal expansion coefficients (CTEF1, CTEF2) are each a value determined in a temperature range of 40°C to 80°C. In another example, the ratio (CTEF2 / CTEF1) may be about 2 or more, or may be about 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, or about 3 or less.

[0145] The coefficient of thermal expansion in the second direction (CTEF2) may be in the range of 5 ppm / K to 150 ppm / K. The coefficient of thermal expansion may be about 10 ppm / K or more, 15 ppm / K or more, 20 ppm / K or more, 25 ppm / K or more, 30 ppm / K or more, 35 ppm / K or more, 40 ppm / K or more, 45 ppm / K or more, 50 ppm / K or more, about 55 ppm / K or more, 60 ppm / K or more, or 65 ppm / K or more, 70 ppm / K or more, 75 ppm / K or more, 80 ppm / K or more, or 85 ppm / K or less, or 140 ppm / K or less, or 130 ppm / K or less, or 120 ppm / K or less, or 100 ppm / K or less, or 95 ppm / K or less, or 90 ppm / K or less.

[0146] The ratio (CTE2 / CTEF2) of the coefficient of thermal expansion (CTE2) of the polymer film in the second direction to the coefficient of thermal expansion (CTEF2) of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) in the second direction may be, for example, about 2 or less. In another example, the ratio (CTE2 / CTEF2) may be about 0 or more, about 0.1 or more, about 0.2 or more, about 0.3 or more, about 0.4 or more, about 0.5 or more, about 0.6 or more, or about 0.7 or less, or about 1.5 or less, 1 or less, 0.9 or less, 0.85 or less, or 0.8 or less.

[0147] The ratio (YMF1 / YMF2) of the elastic modulus (YMF1) ​​in the first direction and the elastic modulus (YMF2) in the second direction of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) may be greater than 1. In another example, the ratio (YMF1 / YMF2) may be about 1.1 or more, 1.2 or more, 1.3 or more, 1.4 or more, 1.5 or more, 1.6 or more, 1.7 or more, or 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, 3 or less, 2.5 or less, 2 or less, 1.9 or less, 1.8 or less, or 1.8 or less.

[0148] The elastic modulus (YMF1) ​​in the first direction may be in the range of about 2 GPa to 10 GPa. In another example, the elastic modulus (YMF1) ​​may be about 2.5 GPa or more, 3 GPa or more, 3.5 GPa or more, 4 GPa or more, or about 9.5 GPa or less, 9 GPa or less, 8.5 GPa or less, 8 GPa or less, 7.5 GPa or less, 7 GPa or less, 6.5 GPa or less, 6 GPa or less, 5.5 GPa or less, or 5 GPa or less.

[0149] The ratio (YM1 / YMF1) ​​of the elastic modulus (YM1) of the polymer film in the first direction to the elastic modulus (YMF1) ​​of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) in the first direction may be, for example, in the range of about 0.5 to 10. In another example, the ratio (YM1 / YMF1) ​​may be about 1 or more or greater than 1, or may be 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, 3 or less, 2 or less, or 1.5 or less.

[0150] The ratio (MSF1 / MSF2) of the maximum stress (MSF1) in the first direction and the maximum stress (MSF2) in the second direction of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) may be 1.5 or more. In another example, the ratio (MSF1 / MSF2) may be about 2 or more, or may be 10 or less, 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, or 3 or less.

[0151] The maximum stress (MSF1) in the first direction may be in the range of about 50 MPa to 200 MPa. In another example, the maximum stress (MSF1) may be about 55 MPa or more, about 60 MPa or more, about 65 MPa or more, about 70 MPa or more, about 75 MPa or more, about 80 MPa or more, about 85 MPa or more, about 90 MPa or more, or about 190 MPa or less, about 180 MPa or less, about 170 MPa or less, about 160 MPa or less, about 150 MPa or less, about 145 MPa or less, about 140 MPa or less, about 135 MPa or less, about 130 MPa or less, about 125 MPa or less, about 120 MPa or less, about 115 MPa or less, about 110 MPa or less, about 105 MPa or less, 90 MPa or less, or about 80 MPa or less.

[0152] The ratio (MS1 / MSF1) of the maximum stress (MS1) of the polymer film in the first direction to the maximum stress (MSF1) of the film (including the cured material layer / base film or including the cured material layer / base film / planarization layer) in the first direction may be, for example, in the range of about 0.5 to 10. In another example, the ratio (MS1 / MSF1) may be about 1 or more, 1.5 or more, 2 or more, or 2.5 or less, or 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, or 3 or less.

[0153] As described above, the physical properties of the above-mentioned film are ensured by applying a base film having high optical, mechanical and / or thermal asymmetry, and this enables the film to ensure physical properties that can be effectively applied to various applications.

[0154] For example, the film of the present application can have excellent flexibility. The film of the present application can show, for example, the above-mentioned scratch resistance and / or surface hardness, while showing excellent flexibility. For example, the film can show a maximum curvature radius of about 1pi to 40pi alone or in combination with another film. Here, the maximum curvature radius refers to the radius of curvature when the film is bent to the maximum extent when the defects on the surface of the film are not observed according to the ASTMD522 standard according to the mandrel test method when the film is bent.

[0155] In another example, the radius of curvature can be greater than 1.5pi, or it can be about 38pi or less, about 36pi or less, about 34pi or less, about 32pi or less, about 30pi or less, about 28pi or less, about 26pi or less, about 24pi or less, about 22pi or less, about 20pi or less, about 18pi or less, about 16pi or less, about 14pi or less, about 12pi or less, about 10pi or less, about 8pi or less, about 6pi or less, about 4pi or less, or about 3pi or less.

[0156] The thickness of the base film used in the film of the present application is not particularly limited, and may have a conventional thickness in consideration of the intended use.

[0157] The above film of the present application can be applied to various uses. For example, the film can be applied to various optical applications.

[0158] Therefore, the present application also relates to an optical laminate. The optical laminate may form an optical functional layer and a film formed on at least one side of the functional layer. In this case, the base film may be located adjacent to the functional layer compared to the cured material layer in the film.

[0159] Here, the type of the applicable optical functional layer is not particularly limited, and for example, a known polarizing layer or retardation layer or the like can be exemplified.

[0160] Beneficial Effects

[0161] The present application can provide a film having excellent optical properties such as transparency or haze, mechanical properties such as hardness, and flexibility, wherein the shape of the surface is adjusted to be suitable for various uses and the adjusted surface shape has excellent durability. DETAILED DESCRIPTION

[0162] Hereinafter, the scope of the present application will be described in more detail through examples, but the scope of the present application is not limited by the following examples.

[0163] 1. Haze measurement method

[0164] The haze is measured in accordance with JIS K 7136 standards by allowing light to enter the uneven surface of the film in a transmission mode method using a measuring instrument (manufacturer: MCRL, trade name: HM-150).

[0165] 2.60 degree gloss measurement method

[0166] The 60-degree gloss was measured according to the DIN EN ISO 2813 standard by allowing light to enter the uneven surface of the film in a reflection mode method using a measuring device (manufacturer: BYK, trade name: BYK MicroGlossmer·60.4561).

[0167] 3. Measurement method of arithmetic mean roughness Ra

[0168] The arithmetic mean roughness Ra of the uneven surface of a film or the like is determined using a Nanosystem optical profiler (model name: NV2700) in accordance with the KS B 0601 standard or the ISO 4287 / 1 standard, and when the two standards do not match, determination is made in accordance with the KS B 0601 standard.

[0169] 4.500g steel wool resistance evaluation

[0170] Steel wool resistance was evaluated using #0000 grade steel wool sold by Liberon. Using a measuring instrument (manufacturer: GibeiNT, trade name: KM-M4360), the steel wool was brought into contact with the uneven surface of the film under a load of 500 g and moved left and right to evaluate the steel wool resistance. At this time, the contact area was set to be about 2 cm in width and 2 cm in length, respectively (contact area: 4 cm 2 ). The movement was performed at a speed of about 60 times / minute and a moving distance of about 10 cm. The reflection was observed visually and the steel wool test was performed until nicks, scratches or cracks were confirmed.

[0171] 5. Pencil hardness evaluation

[0172] Using a measuring instrument (manufacturer: Chungbuk Tech, trade name: pencil hardness tester), pencil hardness was measured according to JIS 5600 standard while drawing the uneven surface of the film with a cylindrical pencil lead at a load of 500 g and an angle of 45 degrees, and gradually increasing the hardness of the pencil lead until a defect such as a notch, a scratch or a crack was confirmed. The speed of the pencil lead was about 1 mm / sec, and the moving distance was about 10 mm. The test was conducted at a temperature of about 25°C and a relative humidity of 50%.

[0173] 6. GPC (Gel Permeation Chromatography)

[0174] The number-average molecular weight (Mn) and molecular weight distribution were measured using GPC (gel permeation chromatography). The analyte substance such as the silicone resin component was placed in a 5-mL vial and diluted to a concentration of approximately 1 mg / mL in THF (tetrahydrofuran). Thereafter, the calibration standard sample and the sample to be analyzed were filtered through a syringe filter (pore size: 0.45 μm) and then measured. Using Agilent technologies’ ChemStation as the analysis program, the weight-average molecular weight (Mw) and number-average molecular weight (Mn) were obtained by comparing the elution time of the sample with the calibration curve, and the ratio (Mw / Mn) was used to calculate the molecular weight distribution (PDI). The measurement conditions for GPC are as follows.

[0175] <GPC Measurement Conditions>

[0176] Instrument: 1200 series from Agilent technologies

[0177] Column: 2 PLgel mixed B from Polymer laboratories were used

[0178] Solvent: THF

[0179] Column temperature: 35 °C

[0180] Sample concentration: 1 mg / mL, injection volume of 200 μL

[0181] Standard sample: Polystyrene (Mp: 3900000, 723000, 316500, 52200, 31400, 7200, 3940, 485)

[0182] 7. Evaluate the tensile properties and coefficient of thermal expansion of the film

[0183] Using a UTM (universal testing machine) device (Instron 3342), a force was applied at a tensile speed of 10 mm / min at room temperature (25 °C), and a tensile strength test was conducted according to ASTM E831 standard to measure the elastic modulus (Young's modulus), elongation, and maximum stress of the film. In this case, each specimen was cut to a width of approximately 10 mm and a length of approximately 30 mm and fabricated, and after sticking and fixing each end in the longitudinal direction by 10 mm to the device, the evaluation was carried out. By using a TMA (thermomechanical analysis) device (Metteler Toledo, SDTA840), a length expansion test was conducted while raising the temperature from 40 °C to 80 °C at a rate of 10 °C / min, and the coefficient of thermal expansion was measured according to ASTM E831 standard. During the measurement, the length of the specimen in the measurement direction was 10 mm, and the load was set to 0.02 N.

[0184] 8. Deflection measurement method for uneven surfaces

[0185] The deflection of the uneven surface was determined using an optical profiler of Nanosystem (model name: NV2700) according to ISO 25178. In the above process, Nanosystem's nanomap program was used as a program.

[0186] Preparation Example 1. Preparation of membrane material P

[0187] Preparation of silicone resin component p

[0188] 3-Acryloxypropyltrimethoxysilane (KBM5103, Shinetsu silicon), dimethyldimethoxysilane (DMDMS, Sigma-Aldrich), ethanol, water and TEA (triethylamine) were uniformly mixed at room temperature in a molar ratio of 0.8:0.2:2.8:2.8:0.01 (KBM5103:DMDMS:ethanol:water:TEA), and reacted in a flask for about 12 hours while stirring at 80°C to obtain a first reactant. The number average molecular weight (Mn) of the prepared first reactant was about 8341.38 g / mol, and the molecular weight distribution (Mw / Mn) was about 2.05.

[0189] The first reactant was maintained under a vacuum condition of about 70 Torr and a temperature of 50° C. for about 3 hours. During this process, the temperature dropped to about 20° C. due to the reduced pressure. Subsequently, the temperature was raised to 80° C. and maintained for 30 minutes while maintaining the vacuum condition again, so that additional polymerization and evaporation of the solvent (water) could be performed to obtain the silicone resin component P. The obtained silicone resin component P was a component represented by the following average unit formula A, wherein the number average molecular weight (Mn) was about 13426.63 g / mol and the molecular weight distribution (Mw / Mn) was about 2.34.

[0190] [Average unit formula A]

[0191] (Me2SiO 2 / 2 ) 0.2 (AcSiO 3 / 2 ) 0.8

[0192] In the average unit formula A, Me is a methyl group and Ac is a 3-acryloxypropyl group.

[0193] Preparation of solvent-free coating liquid

[0194] The silicone resin component p prepared above was mixed with trimethylolpropane triacrylate (TMPTA) in a weight ratio of 9:1 (silicone resin component p: TMPTA), and about 2.5 parts by weight of a free radical initiator (manufacturer: Dupont, product name: Igarcure 819) was mixed with respect to 100 parts by weight of the mixture to prepare a solvent-free coating liquid p.

[0195] Preparation Example 2. Preparation of membrane material Q

[0196] Preparation of silicone resin component q

[0197] Except that the reaction time is set to about 1 hour to obtain the first reactant, the silicone resin component p is prepared in the same manner as in Preparation Example 1. The number average molecular weight (Mn) of the prepared first reactant is about 1712.88 g / mol, and the molecular weight distribution (Mw / Mn) is about 1.63.

[0198] The first reactant was maintained under a vacuum condition of about 70 torr and a temperature of 50° C. for about 3 hours. During this process, the temperature dropped to about 20° C. due to the reduced pressure. Subsequently, the temperature was raised to 80° C. and maintained for 30 minutes while maintaining the vacuum condition again, so that additional polymerization and evaporation of the solvent (water) could be performed to obtain an organosilicon resin component q. The obtained organosilicon resin component q was a component represented by the following average unit formula A, wherein the number average molecular weight (Mn) was about 2219.63 g / mol and the molecular weight distribution (Mw / Mn) was about 1.77.

[0199] [Average unit formula A]

[0200] (Me2SiO 2 / 2 ) 0.2 (AcSiO 3 / 2 ) 0.8

[0201] In the average unit formula A, Me is a methyl group and Ac is a 3-acryloxypropyl group.

[0202] Preparation of solvent-free coating liquid

[0203] The silicone resin component q prepared above was mixed with trimethylolpropane triacrylate (TMPTA) in a weight ratio of 9:1 (silicone resin component q: TMPTA), and about 2.5 parts by weight of a free radical initiator (manufacturer: Dupont, product name: Igarcure 819) was mixed with respect to 100 parts by weight of the mixture to prepare a solvent-free coating liquid q.

[0204] Preparation Example 3. Preparation of membrane material R

[0205] Preparation of silicone resin component

[0206] Epoxycyclohexylethyltrimethoxysilane, dimethyldimethoxysilane (DMDMS, Sigma-Aldrich), ethanol, water and TEA (triethylamine) were uniformly mixed at a molar ratio of 0.8:0.2:2.8:2.8:0.01 (epoxycyclohexylethyltrimethoxysilane:DMDMS:ethanol:water:TEA) at room temperature and reacted in a flask while stirring at 70°C for about 24 hours to obtain a first reactant.

[0207] The first reactant is maintained under a vacuum condition of about 70 Torr and a temperature of 50° C. for about 3 hours. During this process, the temperature decreases to about 20° C. due to the reduced pressure. Subsequently, the temperature is increased to 80° C. and maintained for 30 minutes while maintaining the vacuum condition again, thereby obtaining an organosilicon resin component R. The obtained organosilicon resin component R can be represented by the following average unit formula B.

[0208] [Average unit formula B]

[0209] (Me2SiO 2 / 2 ) 0.2 (EpSiO 3 / 2 ) 0.8

[0210] In the average unit formula B, Me is a methyl group and Ep is a 3,4-epoxycyclohexylethyl group.

[0211] Preparation of solvent-free coating liquid

[0212] The prepared silicone resin r was mixed with epoxy dimer 13 ((([3-ethyloxetane-3-yl]methoxy)methyl)oxirane) (DOX, Toagosei) in a weight ratio of 6:4 (epoxy resin:DOX), and about 3 parts by weight of a cationic initiator (IK-1, San-Apro) was mixed with respect to 100 parts by weight of the mixture to prepare a solvent-free coating liquid r.

[0213] Preparation Example 4. Preparation of anti-glare film for mold (AG1 film)

[0214] A coating solution containing dipentaerythritol hexaacrylate as a non-urethane multifunctional acrylate, silica particles having an average particle size (median particle size, D50 particle size) of about 1 μm, a fluorine-based lubricant (manufacturer: 3M, product name: FC4430), and a free radical initiator (manufacturer: Dupont, product name: Igarcure 819) in a weight ratio of 100:12:0.1:2 (non-urethane multifunctional acrylate: silica particles: lubricant: free radical initiator) was diluted in a solvent to a solid content of about 50 wt %, and the coating solution was applied on a PET (poly(ethylene terephthalate)) base film (TA063, Toyobo) having a thickness of 100 μm to prepare an anti-glare film for a mold, which was dried at 80° C. for about 2 minutes and then irradiated with an H bulb (Fusion) at 1 J / cm 2 The energy of about 10000 W is irradiated with ultraviolet rays. The arithmetic mean roughness Ra of the anti-glare surface of the prepared anti-glare film is at the level of 0.2 μm to 0.4 μm, and the 60-degree glossiness is 45%. In addition, the deflection of the anti-glare surface is about 0.55 to 0.6.

[0215] Preparation Example 5. Preparation of anti-glare film for mold (AG2 film)

[0216] An anti-glare film was prepared in the same manner as in Preparation Example 2 except that a coating solution was prepared by diluting a coating solution containing dipentaerythritol hexaacrylate as a non-urethane multifunctional acrylate, silica particles having an average particle size (median particle size, D50 particle size) of about 1 μm, a fluorine-based lubricant (manufacturer: 3M, product name: FC4430) and a free radical initiator (manufacturer: Dupont, product name: Igarcure 819) in a solvent to a solid content of about 50% by weight at a weight ratio of 100:9:0.1:2 (non-urethane multifunctional acrylate: silica particles: slip agent: free radical initiator) as a coating solution. The arithmetic mean roughness Ra of the anti-glare surface of the film was at a level of 0.2 μm to 0.4 μm, and the 60-degree glossiness was 65%. In addition, the deflection of the anti-glare surface was about 0.75 to 0.85.

[0217] Example 1.

[0218] In a PET (poly(ethylene terephthalate)) film having a planarization layer having a thickness of about 40 μm formed on one side thereof, the solvent-free coating liquid p of Preparation Example 1 was applied to the side without the planarization layer to a thickness of about 40 μm. As the PET film, Toyobo's SRF film was used. The in-plane retardation (Rin) of the SRF film was about 8,400 nm, and the thickness direction retardation (Rth) was about 9,200 nm. In addition, the thermal expansion coefficient (CTE1), elastic modulus (YM1), maximum stress (MS1) and elongation (E1) of the SRF film in the TD direction were 27 ppm / K, 5.7 GPa, 199 MPa and 44.5%, respectively, and the thermal expansion coefficient (CTE2), elastic modulus (YM2), maximum stress (MS2) and elongation (E2) in the MD direction were 67 ppm / K, 2.3 GPa, 81 MPa and 6.8%, respectively.

[0219] Subsequently, in a state where the anti-glare surface of the anti-glare film (AG2 film) of Preparation Example 5 was brought into contact with the coating layer (the coating layer formed on the opposite side of the flattening layer) so that there were no mixed bubbles or air layers, a D bulb (Fusion) was used to irradiate the coating layer from the direction through the anti-glare film at a rate of 2 J / cm 2 The ultraviolet rays were irradiated with an energy of 1000 nm, and further irradiated to the PET film side to prepare a film including a base film and a curing material layer. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 5.2%, the 60-degree gloss was about 65.8%, and the arithmetic mean roughness Ra was about 0.26 μm. In addition, the steel wool resistance of the uneven surface was more than 10,000 times, and the pencil hardness was about 9H.

[0220] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 5.6%, the 60 degree gloss was about 65.1%, and the arithmetic mean roughness Ra was about 0.29 μm.

[0221] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.027, 0.047, and 0.002, respectively.

[0222] In addition, the thermal expansion coefficient (CTEF1), elastic modulus (YMF1), maximum stress (MSF1) and elongation (EF1) of the base film of the membrane (planarization layer / base film / cured material layer) in the TD direction are 42ppm / K, 4.5GPa, 76MPa and 6.4%, respectively, and the thermal expansion coefficient (CTEF2), elastic modulus (YMF2), maximum stress (MSF2) and elongation (EF2) in the MD direction are 87ppm / K, 2.8GPa, 33MPa and 1.6%, respectively.

[0223] The skewness of the uneven surface in the optical profile is around -0.87.

[0224] Example 2.

[0225] In the same PET (poly(ethylene terephthalate)) film having a planarizing layer formed therein as in Example 1, the solvent-free coating liquid p of Preparation Example 1 was applied to a thickness of about 20 μm on the side without the planarizing layer. Subsequently, in a state where the anti-glare surface of the anti-glare film (AG1 film) of Preparation Example 4 was brought into contact with the coating liquid and pressed in the same manner as in Example 1, a D bulb (Fusion) was used from the PET film side at 4 J / cm 2 Ultraviolet rays with an energy of 1000 nm were irradiated to prepare a film including a base film and a curing material layer. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 21.4%, the 60-degree gloss was about 46.2%, and the arithmetic mean roughness Ra was about 0.31 μm. In addition, the steel wool resistance of the uneven surface was more than 10,000 times, and the pencil hardness was about 9H.

[0226] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 21.3%, the 60 degree gloss was about 46.4%, and the arithmetic mean roughness Ra was about 0.34 μm.

[0227] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.007, 0.013, and 0.002, respectively.

[0228] In addition, the thermal expansion coefficient, elastic modulus, maximum stress and elongation of the base film of the film (planarizing layer / base film / cured material layer) in the TD direction and the MD direction were determined similarly to those of Example 1.

[0229] The skewness of the uneven surface in the optical profile is around -0.55.

[0230] Example 3.

[0231] Unlike Example 1, a PET (poly(ethylene terephthalate)) film without a planarization layer was applied. As the PET film, the same SRF film as in Example 1 was used. The solvent-free coating liquid p prepared in Example 1 was applied to one side of the PET film to a thickness of about 20 μm. Subsequently, while the anti-glare surface of the anti-glare film (AG2 film) prepared in Example 5 was brought into contact with the coating liquid and pressed in the same manner as in Example 1, a D bulb (Fusion) was used to illuminate the PET film from the side at 2 J / cm 2Ultraviolet rays with an energy of 1000 nm were irradiated to prepare a film including a base film and a curing material layer. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 5.1%, the 60-degree gloss was about 66.1%, and the arithmetic mean roughness Ra was about 0.26 μm. In addition, the steel wool resistance of the uneven surface was more than 10,000 times, and the pencil hardness was about 8H.

[0232] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 5.4%, the 60 degree gloss was about 66.0%, and the arithmetic mean roughness Ra was about 0.31 μm.

[0233] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.02, 0.007, and 0.003, respectively.

[0234] In addition, the elastic modulus (YMF1), maximum stress (MSF1) and elongation (EF1) of the base film of the membrane (planarization layer / base film / cured material layer) in the TD direction are 4.8 GPa, 96 MPa and 4.4%, respectively, and the elastic modulus (YMF2), maximum stress (MSF2) and elongation (EF2) in the MD direction are 2.6 GPa, 39 MPa and 1.9%, respectively.

[0235] The skewness of the uneven surface in the optical profile is around -0.75.

[0236] Example 4.

[0237] Unlike Example 1, a PET (poly(ethylene terephthalate)) film without a planarization layer was applied. As the PET film, the same SRF film as in Example 1 was used. The solvent-free coating liquid p prepared in Example 1 was applied to one side of the PET film to a thickness of about 20 μm. Subsequently, while the anti-glare surface of the anti-glare film (AG1 film) prepared in Example 4 was in contact with the coating liquid and pressed in the same manner as in Example 1, a D bulb (Fusion) was used to illuminate the PET film from the side at 2 J / cm 2 Ultraviolet rays with an energy of 1000 nm were irradiated to prepare a film including a base film and a curing material layer. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 21.1%, the 60-degree gloss was about 47.4%, and the arithmetic mean roughness Ra was about 0.32 μm. In addition, the steel wool resistance of the uneven surface was more than 10,000 times, and the pencil hardness was about 7H.

[0238] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 21.2%, the 60 degree gloss was about 46.9%, and the arithmetic mean roughness Ra was about 0.36 μm.

[0239] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.007, 0.033, and 0.003, respectively.

[0240] In addition, the elastic modulus, maximum stress and elongation of the base film of the film (planarizing layer / base film / cured material layer) in the TD direction and the MD direction were similar to those of Example 3, respectively.

[0241] The skewness of the uneven surface in the optical profile is around -0.58.

[0242] Example 5.

[0243] In the PET (poly(ethylene terephthalate)) film having a planarizing layer formed therein as in Example 1, the solvent-free coating liquid q of Preparation Example 2 was applied to a thickness of about 20 μm on the side without the planarizing layer. Subsequently, in a state where the anti-glare surface of the anti-glare film (AG1 film) of Preparation Example 4 was brought into contact with the coating liquid and pressed in the same manner as in Example 1, a D bulb (Fusion) was used from the PET film side at 4 J / cm 2 The film including the base film and the curing material layer was prepared by irradiating ultraviolet rays with an energy of 1000 nm. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 21.7%, the 60-degree gloss was about 45.5%, and the arithmetic mean roughness Ra was about 0.34 μm. In addition, the steel wool resistance of the uneven surface was less than 3,000 times, and the pencil hardness was about 7H.

[0244] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 22.0%, the 60 degree gloss was about 44.7%, and the arithmetic mean roughness Ra was about 0.37 μm.

[0245] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.020, 0.053, and 0.002, respectively.

[0246] In addition, the thermal expansion coefficient, elastic modulus, maximum stress and elongation of the base film of the film (planarizing layer / base film / cured material layer) in the TD direction and the MD direction were determined similarly to those of Example 1.

[0247] The skewness of the uneven surface in the optical profile is around -0.59.

[0248] Comparative Example 1.

[0249] As a known coating solution for forming an anti-glare layer, a coating solution containing 60 wt % or more of a non-urethane multifunctional acrylate having an average functional group of difunctionality or higher is coated on a TAC film (50 μm, TAC film with UV cutting function from Fuji) to a thickness of about 15 μm, kept at a temperature of 80° C. for 2 minutes and dried, and then irradiated with an energy of 1 J / cm by a Fusion H bulb. 2 The uneven surface was subjected to ultraviolet radiation to form a surface with an uneven structure. The haze measured on the uneven surface was about 22.1%, the 60-degree gloss was about 21.5%, and the arithmetic mean roughness Ra was about 0.32 μm. In addition, the steel wool resistance of the uneven surface was less than 500 times, and the pencil hardness was about 3H.

[0250] Meanwhile, the haze of the uneven surface measured after the steel wool test was performed 1,500 times in the above-described manner was about 38.4%, the 60-degree glossiness was about 14.2%, and the arithmetic mean roughness Ra was about 83 μm.

[0251] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 1.087, 0.487, and 5.512, respectively.

[0252] The skewness of the uneven surface in the optical profile is about 0.33.

[0253] Comparative Example 2.

[0254] As a known coating solution for forming an anti-glare layer, a coating solution containing 60 wt % or more of a non-urethane multifunctional acrylate having an average functional group of difunctionality or higher is applied on a TAC film (50 μm, TAC film with UV cutting function from Fuji) to a thickness of about 15 μm after complete drying, kept at a temperature of 80° C. for 2 minutes and dried, and then irradiated with an energy of 1 J / cm by a Fusion H bulb. 2 The uneven surface was subjected to ultraviolet radiation to form a surface with an uneven structure. The haze measured on the uneven surface was about 28.2%, the 60-degree gloss was about 19.6%, and the arithmetic mean roughness Ra was about 0.23 μm. In addition, the steel wool resistance of the uneven surface was less than 500 times, and the pencil hardness was about 3H.

[0255] Meanwhile, the haze of the uneven surface measured after the steel wool test was performed 1,500 times in the above-described manner was about 40.1%, the 60-degree glossiness was about 14.6%, and the arithmetic mean roughness Ra was about 93 μm.

[0256] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.793, 0.333, and 6.185, respectively.

[0257] The skewness of the uneven surface in the optical profile is about 0.51.

[0258] Comparative Example 3.

[0259] In the same PET (poly(ethylene terephthalate)) film having a planarizing layer formed therein as in Example 1, the solvent-free coating liquid r of Preparation Example 3 was applied to a thickness of about 20 μm on the side without the planarizing layer. Subsequently, in a state where the anti-glare surface of the anti-glare film (AG1 film) of Preparation Example 4 was brought into contact with the coating liquid and pressed in the same manner as in Example 1, a D bulb (Fusion) was used from the PET film side at 4 J / cm 2 The film including the base film and the curing material layer was irradiated with ultraviolet rays of energy of 1000 nm to prepare an film including the base film and the curing material layer. An uneven structure was formed as a whole on the surface of the prepared curing material layer in contact with the anti-glare surface. The haze measured on the uneven surface was about 23.5%, the 60-degree gloss was about 46.1%, and the arithmetic mean roughness Ra was about 0.3 μm. In addition, the steel wool resistance of the uneven surface was less than 2,000 times, and the pencil hardness was about 6H.

[0260] Meanwhile, the haze of the uneven surface of the cured material measured after 1,500 steel wool tests were performed in the above manner was about 33.3%, the 60 degree gloss was about 35.9%, and the arithmetic mean roughness Ra was about 5.58 μm.

[0261] Therefore, ΔH, ΔG, and ΔR in Formulas 1 to 3 are approximately 0.653, 0.68, and 0.352, respectively.

[0262] In addition, the thermal expansion coefficient, elastic modulus, maximum stress and elongation of the base film of the film (planarizing layer / base film / cured material layer) in the TD direction and the MD direction were determined similarly to those of Example 1.

[0263] The skewness of the uneven surface in the optical profile is around -0.79.

Claims

1. A film comprising a cured material layer of an energy beam curable composition, wherein an uneven surface having a negative deflection according to ISO 25178 is formed on at least one side of the cured material layer, wherein: The uneven surface satisfies one or more of the following formulas 1 to 3: [Formula 1] 0.3≥ΔH=100×|(H A -H I ) / N| [Formula 2] 0.3≥ΔG=100×|(G A -G I ) / N| [Formula 3] 0.3≥ΔR=100×|(R A -RI) / N| Wherein, ΔH, ΔG and ΔR are the change rates of haze, 60-degree glossiness and arithmetic mean roughness (Ra) of the uneven surface, respectively; In Formula 1, H I is the initial haze of the uneven surface, H A is the haze of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(H A -H I ) / N| is obtained by converting H A , H I Substitute (H A -H I ) / N; In formula 2, G I is the initial 60 degree gloss of the uneven surface, G A is the 60 degree gloss of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(G A -G I ) / N| is by G A , G I Substitute (G A -G I ) / N; In formula 3, R I is the initial arithmetic mean roughness (Ra) of the uneven surface, R A is the arithmetic mean roughness (Ra) of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(R A -R I ) / N| is obtained by converting R A , R I Substitute (R A -RI) / N, Wherein, the energy beam curable composition comprises an organosilicon resin component and a reactive diluent, Wherein, the active diluent is an acrylate compound, Wherein, the energy beam-curable composition comprises 1 to 200 parts by weight of a reactive diluent relative to 100 parts by weight of the silicone resin component, Wherein, the organic silicone resin component is represented by the following average unit formula 1: [Average unit formula 1] (R 1 3SiO 1 / 2 ) a (R 2 2SiO 2 / 2 ) b (R 3 SiO 3 / 2 ) c (SiO 4 / 2 ) d (RO 1 / 2 ) e Among them, R 1 To R 3 are each independently a hydrogen atom, an alkyl group, an aryl group or a group capable of energy beam curing, and when R 1 To R 3 When there are multiple, they are the same or different from each other, and R 1 To R 3 at least one of which is an energy beam curable group, when a+b+c+d is converted to 1, a, b, c and d respectively satisfy 0≤a≤1, 0<b≤1, 0<c≤1 and 0≤d≤1, and e is a value in which e / (a+b+c+d) falls within the range of 0 to 0.4, The energy beam curable group includes an alkenyl group, a (meth)acryloyl group, a (meth)acryloyloxy group, a (meth)acryloylalkyl group or a (meth)acryloyloxyalkyl group.

2. The film according to claim 1, wherein The uneven surface satisfies two or more of the following formulas 1 to 3: [Formula 1] 0.3≥ΔH=100×|(H A -H I ) / N| [Formula 2] 0.3≥ΔG=100×|(G A -G I ) / N| [Formula 3] 0.3≥ΔR=100×|(R A -RI) / N| Wherein, ΔH, ΔG and ΔR are the change rates of haze, 60-degree glossiness and arithmetic mean roughness (Ra) of the uneven surface, respectively; In Formula 1, H I is the initial haze of the uneven surface, H A is the haze of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(H A -H I ) / N| is obtained by converting H A , H I Substitute (H A -H I ) / N; In formula 2, G I is the initial 60 degree gloss of the uneven surface, G A is the 60 degree gloss of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(G A -G I ) / N| is by G A , G I Substitute (G A -G I ) / N; In formula 3, R I is the initial arithmetic mean roughness (Ra) of the uneven surface, R A is the arithmetic mean roughness (Ra) of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(R A -R I ) / N| is obtained by converting R A , R I Substitute (R A -RI) / N.

3. The film according to claim 1, wherein The uneven surface satisfies all of the following formulas 1 to 3: [Formula 1] 0.3≥ΔH=100×|(H A -H I ) / N| [Formula 2] 0.3≥ΔG=100×|(G A -G I ) / N| [Formula 3] 0.3≥ΔR=100×|(R A -RI) / N| Wherein, ΔH, ΔG and ΔR are the change rates of haze, 60-degree glossiness and arithmetic mean roughness (Ra) of the uneven surface, respectively; In Formula 1, H I is the initial haze of the uneven surface, H A is the haze of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(H A -H I ) / N| is obtained by converting H A , H I Substitute (H A -H I ) / N; In formula 2, G I is the initial 60 degree gloss of the uneven surface, G A is the 60 degree gloss of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(G A -G I ) / N| is by G A , G I Substitute (G A -G I ) / N and the absolute value of the value obtained; in Formula 3, RI is the initial arithmetic mean roughness (Ra) of the uneven surface, R A is the arithmetic mean roughness (Ra) of the uneven surface after the steel wool test, N is the number of times the steel wool test has been performed, |(R A -R I ) / N| is obtained by converting R A , R I Substitute (R A -RI) / N.

4. The film according to claim 1, wherein The uneven surface has a deflection of -2 or more and less than 0 according to ISO 25178 standard.

5. The film according to claim 1, wherein The weight average molecular weight of the silicone resin component is in the range of 10,000 to 50,000.

6. The film according to claim 1, wherein The molecular weight distribution of the silicone resin component is greater than 1.

8.

7. The film according to claim 1, wherein The pencil hardness of the uneven surface is 5H or more.

8. The film according to claim 1, wherein The uneven surface exhibited 500 g steel wool resistance of 1,500 times or more.

9. The film according to claim 1, wherein The haze of the uneven surface is in the range of 3% to 50%.

10. The film according to claim 1, wherein The uneven surface has an arithmetic mean roughness Ra in the range of 0.01 μm to 2 μm.

11. The film according to claim 1, wherein The 60-degree glossiness of the uneven surface is in the range of 10% to 90%.

12. The film according to claim 1, further comprising a base film, wherein The curing material layer is formed on one side or both sides of the base film.

13. The film according to claim 12, wherein A ratio (CTEF2 / CTEF1) of a thermal expansion coefficient in a first direction (CTEF1) to a thermal expansion coefficient in a second direction perpendicular to the first direction (CTEF2) is 1.5 or more.

14. The film according to claim 12, wherein A ratio (YMF1 / YMF2) of the elastic modulus (YMF1) ​​in a first direction to the elastic modulus (YMF2) in a second direction perpendicular to the first direction is 1 or more.

15. The film according to claim 12, wherein A ratio (MSF1 / MSF2) of a maximum stress in a first direction (MSF1) to a maximum stress in a second direction perpendicular to the first direction (MSF2) is 1.5 or more.

16. The film according to claim 12, wherein A ratio (EF1 / EF2) of an elongation (EF1) in a first direction to an elongation (EF2) in a second direction perpendicular to the first direction is 1.5 or more.

17. An optical laminate comprising: An optical functional layer; and a film according to claim 1 formed on one side of the optical functional layer.