KR20130061641A - Hard coat film, transparent conductive laminate and touch panel - Google Patents

Abstract

PURPOSE: A hard coat film, a transparent conductive laminate, and a touch panel are provided to effectively prevent a generation of a curl, and to have an excellent hardness. CONSTITUTION: A hard coat film(1) comprises a transparent base material layer(2), a first hard coating layer(5) formed in one face side of the base material layer, a second hard coating layer(6) formed in one face side of the first hard coating layer, and a third hard coating layer(12) formed on another face side of the base material layer. A pencil hardness of the first hard coating layer is lower than a pencil hardness of the second hard coating layer. The pencil hardness of the second hard coating layer is more than 3H. A transparent conductive laminate comprises the hard coat film, and a transparent conductive layer laminated in another side of the coating layer. A touch panel comprises the transparent conductive laminate.

Description

A hard coat film, a transparent conductive laminate, and a touch panel (a hard film film,

The present invention relates to a hard coat film, a transparent conductive laminate having the hard coat film, and a touch panel including the transparent conductive laminate.

The liquid crystal display module (LCD) is widely used as a flat panel display by taking advantage of its features such as ultra-thin, lightweight, and low power consumption. Its application is an information display device such as a cellular phone, a PDA, It is expanding. In recent years, characteristics required for the liquid crystal display module vary depending on the application, but include bright (high luminance), easy viewing (wide viewing angle), low power consumption, light weight, and large screen.

As such a liquid crystal display module, there is a touch panel mounted thereon in order to improve ease of operation and promptness of the viewer. Such a liquid crystal display module equipped with a touch panel generally has a structure in which a touch panel, a liquid crystal display element, various optical sheets, and a backlight are superimposed in this order from the front side to the back side.

Such touch panels include capacitive, resistive, and electromagnetic induction methods. As the electrostatic capacity type, electrodes are extended in directions intersecting with each other to detect the change in capacitance between the electrodes when a finger or the like makes contact, thereby detecting the input position, or alternatively, And detecting an input position by detecting a weak current flowing when a capacitor is formed in contact with or near a finger.

In such a liquid crystal display module, in many cases, a hard coat film is arranged on the surface of such optical member in order to improve the impact resistance and ease of handling of the transparent conductive film and other optical members. As such a hard coat film, it is known that a hard coat layer is provided on the surface of a substrate layer. As such a hard coat film, it is proposed that (1) a first hard coat layer is provided on the surface of a base layer and a second hard coat layer is provided on the surface of the first hard coat layer, (See Japanese Patent Application Laid-Open No. 2000-71392). The hard coat film of this publication is provided with the cured resin layer which consists of a blend of radically polymerizable resin and cationically polymerizable resin on the surface of a base material layer as a 1st hard-coat layer, and is made in the surface of this 1st hard-coat layer. By installing the 2nd hard-coat layer of substantially the same thickness as 1 hard-coat layer, it is trying to achieve the prevention of curl and the prevention of a crack, maintaining abrasion resistance.

The hard coat film having the hard coat layer having the two-layer structure is also characterized in that (2) the pencil hardness of the first hard coat layer as the inner layer is lower than the pencil hardness of the second hard coat layer as the outer layer, 2 thick hard coat layer (see JP-A-2007-219013). Since the hard coat film of this publication is formed by laminating the first hard coat layer made of low shrinkage urethane acrylate or the like and the second hard coat layer made of urethane acrylate or the like having high hardness by the same coating method, The thickness of the hard coat layer is formed to be approximately half or more of the thickness of the first hard coat layer.

However, since the first hard coat layer and the second hard coat layer have substantially the same thickness, the first hard coat layer is thin, and the surface of the hard coat film can not have sufficient hardness. Further, in the hard coat film, if the thickness of the hard coat layer is increased to obtain sufficient hardness, the second hard coat layer becomes too thick, and curl may be generated.

In addition, the hard coat film of (2) has a thickness of at least about half the thickness of the first hard coat layer although the thickness of the second hard coat layer is thinner than the thickness of the first hard coat layer. Consequently, The surface of the film can not obtain sufficient hardness, and the occurrence of curl can not be precisely prevented.

Japanese Patent Application Laid-Open No. 2000-71392 Japanese Patent Application Laid-Open No. 2007-219013

(Summary of the Invention)

(Problems to be Solved by the Invention)

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a hard coat film which has an excellent hardness and can effectively prevent the generation of curl, and a transparent conductive laminate comprising the hard coat film, And a touch panel.

(MEANS FOR SOLVING THE PROBLEMS)

The invention made in order to solve the said subject,

A transparent base layer,

A first hard coat layer formed on one surface side of the base layer,

A second hard coat layer formed on one surface side of the first hard coat layer,

A third hard coat layer formed on the other surface side of the base layer

And,

The pencil hardness of the first hard coat layer is lower than the pencil hardness of the second hard coat layer,

The pencil hardness of the second hard coat layer is 3H or more,

Wherein the thickness of the first hard coat layer is 4 times or more and 20 times or less the thickness of the second hard coat layer,

Wherein the thickness of the second hard coat layer is 1 탆 or more and 10 탆 or less,

And the thickness of the third hard coat layer is 50 nm or more and 10 占 퐉 or less.

The hard coat film can improve the hardness of the other surface side by the third hard coat layer formed on the other surface side of the base layer. Particularly, the hard coat film is formed by thinning the third hard coat layer so as to have a thickness of not less than 50 nm and not more than 10 탆, thereby improving the hardness of the other surface side of the base layer, It is possible to prevent the curl from being generated due to the difference in hardness between the curved portions. Further, in the hard coat film, a first hard coat layer having a pencil hardness lower than that of the second hard coat layer is arranged between the base layer and the second hard coat layer. Therefore, the hard coat film is formed by the first hard coat layer and the second hard coat layer while preventing the curl from being generated due to the difference in hardness between the base layer and the second hard coat layer, It is possible to effectively increase the hardness of one surface of the substrate. Particularly, in the hard coat film, the thickness of the second hard coat layer is set within the above range, and the thickness of the first hard coat layer relative to the thickness of the second hard coat layer is maintained at 4 times or more and 20 times or less, It is possible to appropriately prevent the curl from being generated due to the relatively high pencil hardness of the two hard coat layers. In addition, since the first hard coat layer, the second hard coat layer and the third hard coat layer have the above-described structure, the hard coat film improves the ease of handling and the like by improving the hardness on both sides, It can meet the demand.

In the hard coat film, the pencil hardness of the first hard coat layer may be F or more and H or less. This makes it possible to more effectively increase the hardness of one surface side of the hard coat film.

The hard coat film may have a thickness of the first hard coat layer of 20 占 퐉 or more and 100 占 퐉. By this, generation | occurrence | production of a curl can be prevented more suitably.

The hard coat film may have the pencil hardness of the base layer of 8B or more and F or less. The hard coat film can suitably increase the hardness while preventing the generation of curl even when the pencil hardness of the base layer is in the above range.

The hard coat film may be a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin as a main component of the substrate layer. The hard coat film can prevent generation of curl even when a resin having relatively low hardness and susceptible to curling such as a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin is used as a main component of the base layer In addition, the hardness can be effectively increased. The in-plane retardation value Ro and the thickness direction retardation value Rth can be easily reduced by using a polycarbonate-based resin, a cycloolefin-based resin, or a polyethylene terephthalate-based resin as a main component of the substrate layer . The hard coat film can improve the impact resistance by making the base layer the main component of the polycarbonate resin. Further, the hard coat film can effectively suppress a change in retardation caused by an external force such as direct sunlight or heat generated by a display by using the cycloolefin resin as the main component of the base layer, and is excellent in optical uniformity, Video display can be performed. The hard coat film can more effectively increase the hardness by making the base layer the main component of the polyethylene terephthalate resin.

The hard coat film may have an in-plane retardation value (Ro) of 100 nm or less and a retardation value (Rth) in the thickness direction of 200 nm or less. Thus, when the hard coat film is superimposed on another optical member, it is possible to prevent the optical function of the other optical member from being hindered.

In the hard coat film, the main component of the first hard coat layer may be an ultraviolet ray hardening resin. Thereby, manufacturing ease can be improved. In addition, the hard coat film can prevent thermal expansion and heat shrinkage caused by heat applied to the substrate layer, thereby improving dimensional stability.

When the hard coat film contains an ultraviolet ray-curable resin as a main component of the first hard coat layer, the ultraviolet ray-curable resin may be a cationic polymerizable resin. As a result, it is possible to improve the adhesion to the substrate layer and to suppress the change of the adhesive force with time. Further, the hard coat film can prevent the generation of curl by using a cationic polymerizable resin as a main component of the first hard coat layer, and can further improve the dimensional stability.

The hard coat film may contain the ultraviolet ray hardening resin as the main component and the ultraviolet ray hardening agent. In general, when the main component of the first hard coat layer is an ultraviolet ray hardening resin and the first hard coat layer contains an ultraviolet ray hardening agent, the hardening speed of the first hard coat layer is lowered and the productivity is lowered. However, since the thickness of the first hard coat layer of the hard coat film is set relatively thick, a sufficient amount of the ultraviolet ray hardening agent can be contained in the first hard coat layer even if the concentration of the ultraviolet ray hardening agent is suppressed to a small value. Therefore, even when a sufficient amount of the ultraviolet ray hardening agent is contained in the first hard coat layer, the hard coat film can suppress the lowering of the hardening speed of the first hard coat layer and prevent the productivity from being lowered.

The hard coat film may contain the high hardness fine particles dispersedly contained in the third hard coat layer. Thereby, the refractive index of the third hard coat layer can be improved.

The refractive index of the third hard coat layer may be 1.6 or more and 2.3 or less. As a result, when the third hard coat layer side of the hard coat film is laminated on the transparent conductive layer such as a touch panel, the refractive index of the third hard coat layer and the refractive index of the transparent conductive layer, for example, the refractive index of ITO To about 2.2 (?: 520 nm). As a result, the hard coat film can lower the visibility of the electrode pattern formed on the transparent conductive layer.

In order to solve the above-described problems,

The third hard coat layer containing the high refractive index fine particles dispersed therein,

And a transparent conductive layer laminated on the other surface of the third hard coat layer of the hard coat film.

Since the transparent conductive laminate includes the hard coat film, it is possible to suitably prevent curling from occurring in the hard coat film. Further, since the above-mentioned transparent conductive laminate includes the above-mentioned hard coat film, it is possible to improve the hardness on both sides to improve ease of handling and to meet the requirement of ultra-thinness. Further, the transparent conductive laminate can reduce the visibility of the electrode pattern formed on the transparent conductive layer, for example, when used in a touch panel, by bringing the refractive index of the third hard coat layer and the refractive index of the transparent conductive layer close to each other .

In the transparent conductive laminate, the difference between the refractive index of the third hard coat layer and the refractive index of the transparent conductive layer may be 0.6 or less. Thereby, the visibility of the electrode pattern formed in a transparent conductive layer can further be reduced.

Moreover, the touch panel performed in order to solve the said subject is a touch panel provided with the said transparent conductive laminated body.

Since the touch panel includes the hard coat film, it is possible to suitably prevent the hard coat film from being curled. Further, since the touch panel is provided with the hard coat film, it is possible to improve the hardness of the both sides and to improve ease of handling, and to meet the demand for ultra-thinness. In addition, the touch panel can reduce the visibility of the electrode pattern formed on the transparent conductive layer by bringing the refractive index of the third hard coat layer and the refractive index of the transparent conductive layer close to each other.

In the present invention, " pencil hardness " is a value based on the pencil drawing value described in the test method prescribed in JIS K5600-5-4. In the present invention, the pencil hardness of the first hard coat layer, the pencil hardness of the second hard coat layer, and the pencil hardness of the third hard coat layer are all higher than the pencil hardness of the base layer. &Quot; Thickness " refers to an average thickness measured in accordance with JIS K7130. The in-plane retardation value Ro is a value obtained from Ro = (Ny-Nx) xd, and the retardation value in the thickness direction Rth is expressed by Rth = ((Nx + d. Here, Nx is the refractive index of the advance axis of the film (axis parallel to the plane direction), Ny is the refractive index of the film of the film (parallel to the plane direction and perpendicular to the phase axis) Nz is the refractive index of the film in the thickness direction (direction perpendicular to the plane direction), and d is the thickness of the film.

The term " ultraviolet ray inhibitor " is an additive having a function of preventing photo-induced deterioration due to ultraviolet rays, and includes an ultraviolet ray absorbent, a UV stabilizer, and the like.

INDUSTRIAL APPLICABILITY As described above, the hard coat film of the present invention, the transparent conductive laminate including the hard coat film, and the touch panel including the transparent conductive laminate can improve the hardness of the hard coat film, The occurrence of curl can be effectively prevented.

1 is a schematic sectional view showing a hard coat film according to an embodiment of the present invention.
2 is a schematic cross-sectional view showing a hard coat film according to a different form from the hard coat film of FIG.
It is a schematic cross section which shows the transparent conductive laminated body which concerns on one Embodiment of this invention.
4 is a schematic cross-sectional view showing a touch panel according to one embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view illustrating a touch panel according to a different form from the touch panel of FIG. 4;

(Mode for carrying out the invention)

[First Embodiment]

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail, referring drawings suitably.

The hard coat film 1 shown in Fig. 1 has a base layer 2, a surface side hard coat layer 3, and a back side hard coat layer 4 (corresponding to a third hard coat layer). When the hard coat film 1 is adhered to another member, the back surface side hard coat layer 4 is arranged on the adhesion surface side and the surface side hard coat layer 3 is arranged on the opposite side.

(Base layer (2))

Since the base layer 2 needs to transmit a light ray, it is formed in a transparent state, in particular, colorless and transparent. The main component constituting the substrate layer 2 is not particularly limited, but is typically selected from the group consisting of a polycarbonate resin, a cycloolefin resin, an acrylic resin, a polypropylene resin and a polyethylene terephthalate resin. These synthetic resins have excellent optical transparency and can transmit light rays well. Among them, a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin is preferable as a main component constituting the substrate layer 2. [

The base layer 2 may contain other arbitrary components as long as it does not impair the transparency and the desired strength, but it preferably contains 90 mass% or more of the main component composed of the synthetic resin, more preferably 98 mass% or more . Examples of the optional components include an ultraviolet ray inhibitor, a lubricant, a processing aid, a plasticizer, an impact resistance auxiliary, a retardation reducing agent, a gloss removing agent, an antimicrobial agent and an antifungal agent.

The polycarbonate resin forming the substrate layer 2 is not particularly limited and may be either a linear polycarbonate resin or a branched polycarbonate resin. However, the polycarbonate resin may be any of a linear polycarbonate resin and a branched polycarbonate resin It may be a polycarbonate-based resin.

As a linear polycarbonate resin, it is a linear aromatic polycarbonate resin manufactured by a well-known phosgene method or a melting method, and consists of a carbonate component and a diphenol component. Examples of precursors for introducing the carbonate component include phosgene, diphenyl carbonate, and the like. Examples of the diphenol include 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl- (4-hydroxyphenyl) cyclohexane, 1,1-bis (3,5-dimesyl-4-hydroxyphenyl) cyclohexane, 1,1- 4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclodecane, 1,1-bis Dihydroxydiphenyl ether, 4,4'-thiodiphenol, 4,4'-dihydroxy-3,3-dichlorodiphenyl ether, and the like. These may be used alone or in combination of two or more. Such a linear polycarbonate resin is produced, for example, by the method described in U.S. Patent No. 3989672. The refractive index is preferably 1.57 or more and 1.59 or less.

The branched polycarbonate resin is a polycarbonate resin produced by using a branching agent. Examples of the branching agent include fluoroglucin, trimellitic acid, 1,1,1-tris (4-hydroxyphenyl) Ethane, 1,1,2-tris (4-hydroxyphenyl) ethane, 1,1,2-tris (4-hydroxyphenyl) propane, 1,1,1- 1,1,1-tris (4-hydroxyphenyl) propane, 1,1,1-tris (2-methyl-4-hydroxyphenyl) methane, 1,1,1-tris (3-methyl-4-hydroxyphenyl) ethane, 1,1,1-tris Tris (3,5-dimethyl-4-hydroxyphenyl) methane, 1,1,1-tris (3,5- Chloro-4-hydroxyphenyl) methane, 1,1,1-tris (3-chloro-4-hydroxyphenyl) ethane, 1,1,1-tris (3,5- Methane, 1,1,1-tris (3,5-dichloro-4-hydroxyphenyl) ethane , 1,1,1-tris (3-bromo-4-hydroxyphenyl) methane, 1,1,1-tris (3,5-dibromo-4-hydroxyphenyl) methane, 1,1,1-tris (3,5-dibromo-4-hydroxyphenyl) ethane, 2,5-dihydroxydiphenyl ether, and the like.

Such a branched polycarbonate resin can be produced, for example, as disclosed in Japanese Unexamined Patent Publication No. Hei 03-182524, in which an aromatic diphenol, a polycarbonate oligomer derived from the branching agent and phosgene, an aromatic diphenol and a terminal stopper With stirring so that the reaction mixture liquid containing them becomes turbulent and allowing the reaction mixture to react as a laminar flow while adding an aqueous alkaline solution and increasing the viscosity of the reaction mixture. The branched polycarbonate resin of the resin composition of the present invention is contained in the polycarbonate resin in the range of 5% by mass or more and 80% by mass or less, preferably 10% by mass or more and 60% by mass or less. This is because, if the branched polycarbonate resin is less than 10% by mass, the elongation viscosity is decreased to make molding in extrusion molding difficult, and if it exceeds 80% by mass, the melt viscosity of the resin increases and molding processability decreases.

The cycloolefin-based resin forming the substrate layer (2) is not particularly limited as long as it is a resin having a unit of a monomer comprising a cyclic olefin (cycloolefin). As the cycloolefin-based resin to be used for the base layer 2, a cycloolefin polymer (COP) or a cycloolefin copolymer (COC) may be used, and a cycloolefin copolymer is more preferable.

The cycloolefin copolymer refers to an amorphous cyclic olefin resin which is a copolymer of a cyclic olefin and an olefin such as ethylene. As cyclic olefin, polycyclic cyclic olefin and monocyclic cyclic olefin exist. Examples of such polycyclic cyclic olefins include norbornene, methyl norbornene, dimethyl norbornene, ethyl norbornene, ethylidene norbornene, butyl norbornene, dicyclopentadiene, dihydrodicyclopentadiene, methyl Dicyclopentadiene, dimethyldicyclopentadiene, tetracyclododecene, methyltetracyclododecene, dimethylcyclotetradodecene, tricyclopentadiene, tetracyclopentadiene, and the like. In addition, examples of the monocyclic cyclic olefin include cyclobutene, cyclopentene, cyclooctene, cyclooctadiene, cyclooctatriene, and cyclododecatene.

The acrylic resin forming the substrate layer (2) is a resin having a skeleton derived from acrylic acid or methacrylic acid. Examples of the acrylic resin include, but are not particularly limited to, poly (meth) acrylic acid esters such as polymethyl methacrylate, methyl methacrylate- (meth) acrylic acid copolymer, methacrylic acid methyl- (meth) (Meth) acrylate, a methyl (meth) acrylate-styrene copolymer, a polymer having an alicyclic hydrocarbon group (e.g., methyl methacrylate-cyclohexyl methacrylate copolymer, methacrylic acid Methyl (meth) acrylate norbornyl copolymer). Among these acrylic resins, poly (meth) acrylic acid C1-6 alkyl such as methyl poly (meth) acrylate is preferable, and methyl methacrylate resin is more preferable.

The polypropylene resin forming the substrate layer (2) is a resin having a skeleton derived from propylene. Examples of the polypropylene resin include, but are not particularly limited to, homopolymers of propylene or copolymers of propylene and at least one monomer selected from the group consisting of ethylene and alpha -olefins of 4 to 12 carbon atoms .

The polyethylene terephthalate resin forming the substrate layer (2) is a polymer obtained by the reaction of terephthalic acid and ethylene glycol. The polyethylene terephthalate resin may contain other comonomers, but it is preferable that the repeating unit of the polyethylene terephthalate is 80 mol% or more. Polyethylene terephthalate can be produced by, for example, charging dimethyl terephthalate and ethylene glycol into a reactor, transesterifying the mixture while slowly raising the internal temperature, transferring the reaction product to a polymerization reactor, and carrying out a polymerization reaction in a high- .

The in-plane retardation value Ro of the substrate layer 2 is not particularly limited, but is preferably 100 nm or less. The upper limit of the in-plane retardation value of the base layer 2 is more preferably 50 nm, further preferably 15 nm, and particularly preferably 5 nm. The retardation value (Rth) in the thickness direction of the substrate layer (2) is not particularly limited, but is preferably 20 nm or less. The upper limit value of the retardation value in the thickness direction of the base layer 2 is more preferably 100 nm, further preferably 30 nm, and particularly preferably 10 nm. The hard coat film 1 suppresses the conversion action of the transmitted light ray by decreasing the in-plane retardation value Ro and the thickness direction retardation value Rth as described above, It is possible to prevent the optical function of the other optical member from being hindered.

The pencil hardness of the base layer 2 is not particularly limited and is preferably higher in order to increase the hardness after the hard coat is applied, but it may be 8B or more and F or less. The hard coat film 1 can effectively increase the pencil hardness of one side of the surface to 2H to 6H or less while preventing the generation of curl even if the pencil hardness of the base layer 2 is in the above range.

The thickness of the substrate layer 2 is not particularly limited, but is preferably 20 m or more and 200 m or less, for example. The upper limit value of the thickness of the base layer 2 is more preferably 150 m, and particularly preferably 100 m. On the other hand, the lower limit value of the thickness of the base layer 2 is more preferably 30 占 퐉, and particularly preferably 50 占 퐉. When the thickness of the base material layer 2 exceeds the said upper limit, when the line speed and productivity at the time of manufacture are reduced, and the said hard-coat film 1 is used for a liquid crystal display device, ultra-thinning of a liquid crystal display device is carried out. There is a risk of contrary to the demands. On the other hand, when the thickness of the base layer 2 is less than the above lower limit value, the strength and rigidity become small, and the bending prevention property and the like may be lowered.

As the substrate layer 2, those having an arithmetic mean surface roughness (Ra) of 0.02 or more and 0.06 or less can be used. The base layer 2 may be subjected to a mat treatment if necessary. The arithmetic mean surface roughness (Ra) of the substrate layer 2 subjected to the matting treatment is preferably 0.07 or more and 2 or less, and more preferably 0.1 or more and 1 or less. By controlling the surface roughness of the base layer 2 to such a range, occurrence of scratches in the treatment after the production of the raw material film sheet is prevented, and handling is improved. Generally, when the produced sheet of film material is wound, both ends in the width direction of the film must be embossed (knurled) to prevent blocking. When the film is subjected to the knurling treatment, since the treated portions at both ends of the film can not be used, the portion must be cut and discarded. Further, in the winding work of the film, masking may be performed by a protective film in order to prevent the occurrence of a scratch. However, by setting the arithmetic average surface roughness of the substrate layer 2 to the predetermined range as described above, the blocking can be prevented without performing the knurling treatment, so that the manufacturing process is simplified and both end portions in the film width direction can be used In addition, the film is not broken, and the long length can be wound. In addition, since the base layer 2 has an appropriate surface roughness, the occurrence of scars at the time of winding is effectively suppressed, and the above-mentioned masking becomes unnecessary.

The method for producing the base layer 2 is not particularly limited, and for example, a flake raw material of a synthetic resin and an additive such as a plasticizer are mixed by a conventionally known mixing method to prepare a thermoplastic resin composition in advance, 2) can be produced. The thermoplastic resin composition is obtained by preblending with, for example, a mixer such as an omni mixer, and extruding and kneading the resulting mixture. In this case, the kneader used for the extrusion kneading is not particularly limited, and for example, conventionally known kneaders such as an extruder such as a single screw extruder, a twin screw extruder, or a pressurized kneader can be used.

Examples of the method of forming the base layer 2 include known methods such as a solution casting method (solution casting method), a melt extrusion method, a calendering method, and a compression molding method. Of these, the solution casting method (solution casting method) and melt extrusion method are preferable. In this case, a thermoplastic resin composition previously kneaded by extrusion may be used. Alternatively, a synthetic resin and other additives such as a plasticizer may be dissolved in a solvent to prepare a homogeneous mixed solution, followed by solution casting (solution casting) Or may be provided in a film forming process. In order to suppress the retardation value of the base layer 2 and the retardation value of the hard coat film 1 uniformly, for example, the molten resin may be cooled by a cooling roll maintained at a uniform temperature in the width direction and an endless belt It may be inserted into an arc shape and cooled.

Examples of the solvent used in the solution casting method (solution casting method) include chlorinated solvents such as chloroform and dichloromethane; Aromatic solvents such as toluene, xylene, benzene, and mixed solvents thereof; But are not limited to, alcohols such as methanol, ethanol, isopropanol, n-butanol and 2-butanol; aliphatic solvents such as methyl cellosolve, ethyl cellosolve, butyl cellosolve, dimethyl formamide, dimethyl sulfoxide, dioxane, cyclohexanone, Hydrofuran, acetone, methyl ethyl ketone (MEK), ethyl acetate, diethyl ether; And the like. These solvents may be used alone or in combination of two or more. As an apparatus for performing the solution casting method (solution softening method), a drum type casting machine, a band type casting machine, a spin coater, etc. are mentioned, for example.

Examples of the melt extrusion method include a T-die method and an inflation method. The molding temperature of the film upon melt extrusion is preferably 150 占 폚 or higher and 350 占 폚 or lower, more preferably 200 占 폚 or higher and 300 占 폚 or lower. When the film is formed by the T die method, a T die is attached to the tip of a known single-screw extruder or a twin-screw extruder, and a film extruded into a film is wound to obtain a roll-shaped film. At this time, the uniaxial stretching process can be also carried out by appropriately adjusting the temperature of the winding roll and stretching in the extrusion direction. It is also possible to apply a step such as a biaxial stretching and a biaxial stretching in succession by applying a step of stretching the film in a direction perpendicular to the extrusion direction.

(The surface side hard coat layer 3)

The surface side hard coat layer 3 has a first hard coat layer 5 and a second hard coat layer 6. The thickness of the hard coat layer 3 on the surface side is not particularly limited, but is preferably 21 占 퐉 or more and 105 占 퐉 or less. The upper limit value of the thickness of the surface side hard coat layer 3 is more preferably 82 占 퐉, and still more preferably 63 占 퐉. On the other hand, the lower limit value of the thickness of the surface side hard coat layer 3 is more preferably 32 탆, and further preferably 43 탆. If the thickness of the surface side hard coat layer 3 exceeds the upper limit value, the curl preventing action is not promoted so much, and there is a possibility that the hard coat film 1 may be in need of ultra thinness. On the contrary, when the thickness of the surface side hard coat layer 3 is less than the above lower limit value, the occurrence of curl may not be effectively prevented.

(The first hard coat layer 5)

The first hard coat layer 5 is formed on one surface of the substrate layer 2. [ The first hard coat layer 5 may be formed only of resin, or may contain an additive such as an ultraviolet ray inhibitor. The main component constituting the first hard coat layer 5 is not particularly limited, and examples thereof include a resin formed by an active energy ray curing resin or a reactive silicon compound. As active energy ray hardening resin, ultraviolet curable resin, electron beam curable resin, radiation curable resin, etc. are mentioned. Moreover, tetraethoxysilane etc. are mentioned as a reactive silicon compound. Among them, an ultraviolet ray hardening resin is preferable as the main component of the first hard coat layer 5. The hard coat film (1) can improve the ease of manufacture because the main component of the first hard coat layer (5) is an ultraviolet curable resin. Further, the hard coat film 1 of the first hard coat layer 5 is made of an ultraviolet ray-curable resin, thereby preventing thermal expansion and heat shrinkage caused by heat applied to the base layer 2, And the dimensional stability can be improved. As said ultraviolet curable resin, a radically polymerizable resin, a cationically polymerizable resin, etc. are mentioned.

As an ultraviolet polymerizable compound which forms the said ultraviolet curable resin, the monomer or oligomer which hardens | cures by reaction, such as superposition | polymerization and crosslinking, is used for ultraviolet rays.

A radically polymerizable monomer and a cationically polymerizable monomer are mentioned as said monomer. Moreover, as said oligomer, a radically polymerizable oligomer and a cationically polymerizable oligomer are mentioned.

As said radically polymerizable monomer, methyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, isobornyl (meth) acryl, for example Monofunctional (meth) acrylates, such as the rate and dicyclopentenyl (meth) acrylate, dipropylene glycol di (meth) acrylate, 1, 6- hexanediol di (meth) acrylate, and neopentyl glycol di ( Meta) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol Various (meth) acrylates, such as polyfunctional (meth) acrylates, such as hexa (meth) acrylate, are mentioned.

Examples of the cationic polymerizable monomer include alicyclic epoxides such as 3,4-epoxycyclohexenylmethyl-3 ', 4'-epoxycyclohexene carboxylate and the like, bisphenol A diglycidyl ether, Vinyl ethers such as dibutyl ether, 4-hydroxybutyl vinyl ether, and oxetanes such as 3-ethyl-3-hydroxymethyl oxetane.

Examples of the radically polymerizable oligomer include various kinds of urethane (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, triazine (Meth) acrylate oligomer, trimethylol propane trithioglycolate, and pentaerythritol tetrathioglycolate, unsaturated polyester oligomers, and the like.

As said cationically polymerizable oligomer, a novolak-type epoxy resin oligomer, an aromatic vinyl ether resin oligomer, etc. are mentioned, for example.

Among them, a cationic polymerizable monomer or a cationic polymerizable oligomer is preferable as the ultraviolet polymerizable compound forming the ultraviolet curable resin used for the first hard coat layer (5).

The hard coat film (1) uses an ultraviolet curable resin as a main component of the first hard coat layer (5), and a cationic polymerizable monomer or a cationic polymerizable oligomer is used as an ultraviolet polymerizable compound forming the ultraviolet curable resin, The adhesion between the base layer 2 and the first hard coat layer 5 can be improved and the change in the adhesive strength with time can be suppressed. The hard coat film 1 according to this configuration can prevent hardening and shrinkage of the first hard coat layer 5 and further improve the dimensional stability.

As the cationic polymerizable monomer, alicyclic epoxides or oxetanes are preferable. These alicyclic epoxides and oxetanes have relatively high polarity, and the glass transition temperature of the cationically polymerizable resin obtained from these polymerizable compounds generally becomes high. Therefore, the hard coat film (1) can improve the heat resistance by using alicyclic epoxides or oxetanes as the cationic polymerizable monomer used in the first hard coat layer (5).

The glass transition temperature of the cationic polymerizable resin is not particularly limited, but is preferably 180 占 폚 or higher, more preferably 200 占 폚 or higher, and particularly preferably 220 占 폚 or higher. In the hard coat film (1), the glass transition temperature of the cationic polymerizable resin falls within the above range, whereby the heat resistance can be remarkably improved.

In addition, the above monomers and oligomers may be used in a mixture of two or more kinds depending on required performance and the like.

As the ultraviolet polymerizable compound for forming the ultraviolet curable resin used for the first hard coat layer 5, a radically polymerizable compound having a low hardening shrinkage is also suitably used. Examples of such a radically polymerizable compound include polymethacryloxypropylsilsesquioxane having a molecular weight of 100,000 to 3,000. As the ultraviolet ray curable resin having such a radically polymerizable compound, for example, a radical polymerizable resin disclosed in Japanese Patent Application Laid-Open No. 2008-120845 is also used.

As the polymerization initiator contained in the first hard coat layer 5, when the ultraviolet polymerizable compound is a radically polymerizable monomer or oligomer, compounds such as benzophenone, thioxanthone, benzoin, and acetophenone can be used have. When the ultraviolet polymerizable compound is a cationically polymerizable monomer or oligomer, the polymerization initiator contained in the first hard coat layer 5 may be a metallocene compound, an aromatic sulfonium compound, or an aromatic iodonium compound .

Although it does not specifically limit as content of the said polymerization initiator, 1 mass% or more and 10 mass% or less are preferable with respect to ultraviolet curable resin, and 3 mass% or more and 6 mass% or less are more preferable. When content of a polymerization initiator exceeds the said upper limit, the polymerization degree of ultraviolet curable resin falls and there exists a possibility that a desired hardness may not be obtained. On the other hand, when the content of the polymerization initiator is less than the above lower limit value, there is a fear that the curing reaction does not sufficiently proceed.

In addition, the first hard coat layer 5 may contain a solvent for improving the coatability. As such a solvent, For example, Aliphatic hydrocarbons, such as hexane and an octane; Aromatic hydrocarbons such as toluene and xylene; Alcohols such as ethanol, 1-propanol, isopropanol and 1-butanol; Ketones such as methyl ethyl ketone and methyl isobutyl ketone; Esters such as ethyl acetate, butyl acetate and isobutyl acetate; Glycol ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether; And organic solvents such as esterified glycol ethers such as ethylene glycol monomethyl ether acetate and propylene glycol monomethyl ether acetate. These organic solvents may be used alone or in combination of several kinds as required. It is preferable that such a solvent is evaporated and dried in the process of manufacturing the first hard coat layer 5. Therefore, the boiling point of such a solvent is preferably in the range of 60 to 160 캜. The saturated vapor pressure of the solvent at 20 캜 is preferably in the range of 0.1 to 20 kPa. The kind and content of the solvent are appropriately adjusted in accordance with the main component of the base layer 2, the main component of the first hard coat layer 5, the thickness, and the like.

The first hard coat layer 5 may contain an ultraviolet ray hardening agent. Examples of the ultraviolet ray inhibitor contained in the first hard coat layer 5 include an ultraviolet ray absorber and a UV stabilizer.

Examples of the ultraviolet absorber include a salicylic acid-based ultraviolet absorber, a benzophenone-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, a cyanoacrylate-based ultraviolet absorber, a triazine-based ultraviolet absorber, , And one or more selected from these groups can be used. Especially, a triazine type ultraviolet absorber and a benzoxadione type ultraviolet absorber are preferable from a dispersible point. Moreover, as said ultraviolet absorber, the polymer which has an ultraviolet absorber in a molecular chain is also used suitably. By using the polymer which has an ultraviolet absorber for such a molecular chain, deterioration of the ultraviolet absorption function by the bleeding-out of a ultraviolet absorber can be prevented. As this ultraviolet absorber, a benzotriazole group, a benzophenone group, a cyanoacrylate group, a triazine group, a salicylate group, a benzylidene malonate group, etc. are mentioned. Especially, a benzotriazole group, a benzophenone group, and a triazine group are especially preferable.

As the ultraviolet stabilizer, for example, a hindered amine ultraviolet stabilizer having high stability to ultraviolet rays is suitably used. When the first hard coat layer 5 contains an ultraviolet stabilizer, the radicals, active oxygen, and the like generated by the ultraviolet rays are inactivated, so that the ultraviolet stability and weather resistance can be improved. Further, by using the ultraviolet absorber and the ultraviolet stabilizer in combination, the first hard coat layer 5 can remarkably improve the prevention of the photo-thermal degradation and the weather resistance against ultraviolet rays.

The content (mass ratio) of the ultraviolet inhibitor to the main component of the first hard coat layer 5 is not particularly limited, but is preferably 0.1% by mass or more and 10% by mass or less. The upper limit of the content of the ultraviolet inhibitor to the main component of the first hard coat layer 5 is more preferably 8% by mass, and still more preferably 5% by mass. On the other hand, the lower limit of the content of the ultraviolet inhibitor to the main component of the first hard coat layer 5 is more preferably 1% by mass, and still more preferably 3% by mass. In the hard coat film 1, when the content of the ultraviolet inhibitor in the main component of the first hard coat layer 5 exceeds the upper limit, the durability and the like of the first hard coat layer 5 may decrease . On the other hand, the hard coat film 1 can prevent the first hard coat layer 5 from effectively exhibiting the ultraviolet ray-shielding function when the content of the ultraviolet ray-inhibitor to the main component of the first hard coat layer 5 is lower than the lower limit described above There is a concern.

It is preferable that the hard coat film (1) contains an ultraviolet ray hardening resin as a main component of the first hard coat layer (5), and further contains an ultraviolet ray hardening agent. Generally, when the main component of the first hard coat layer 5 is an ultraviolet ray hardening resin and the first hard coat layer 5 contains an ultraviolet ray hardening agent, the hardening speed of the first hard coat layer 5 is slow And productivity is deteriorated. However, since the thickness of the first hard coat layer 5 of the hard coat film 1 is set to be comparatively large, even when the concentration of the ultraviolet ray hardening agent is suppressed to a small level, a sufficient amount of the ultraviolet ray hardening agent is applied to the first hard coat layer 5 ). Therefore, even when the first hard coat layer 5 contains a sufficient amount of the ultraviolet ray hardening agent, the hard coat film 1 suppresses the lowering of the hardening speed of the first hard coat layer 5, Can be prevented. When the polycarbonate resin is used as the main component of the substrate layer 2, the hard coat film 1 contains the ultraviolet inhibitor, so that the first hard coat layer 5 contains the ultraviolet ray- Can be effectively prevented.

The pencil hardness of the first hard coat layer 5 is formed to be lower than the pencil hardness of the second hard coat layer 6. [ The pencil hardness of the first hard coat layer 5 is not particularly limited as long as it is lower than the pencil hardness of the second hard coat layer 6, but is preferably F or more and H or less. The hard coat film 1 is a film having a hardness difference between the base layer 2 and the first hard coat layer 5 when the pencil hardness of the first hard coat layer 5 exceeds the upper limit value, Is increased. Conversely, when the pencil hardness of the first hard coat layer 5 is less than the above lower limit value, the hard coat film 1 may not have a desired hardness.

The thickness of the first hard coat layer 5 is not less than four times and not more than twenty times the thickness of the second hard coat layer 6. The upper limit of the thickness of the first hard coat layer 5 is more preferably 18 times, and more preferably 16 times the thickness of the second hard coat layer 6. Further, the lower limit of the thickness of the first hard coat layer 5 is more preferably 6 times the thickness of the second hard coat layer 6, and even more preferably 8 times. If the thickness of the first hard coat layer 5 exceeds the upper limit, there is a fear that the curl preventing action is not promoted so much. On the other hand, when the thickness of the first hard coat layer 5 is less than the above lower limit, there is a fear that the generation of curl can not be effectively prevented.

The thickness of the first hard coat layer 5 is not particularly limited, but is preferably 20 탆 or more and 100 탆 or less. The upper limit value of the thickness of the first hard coat layer 5 is more preferably 80 탆, and further preferably 60 탆. On the other hand, the lower limit value of the thickness of the first hard coat layer 5 is more preferably 30 占 퐉, and further preferably 40 占 퐉. If the thickness of the first hard coat layer 5 exceeds the upper limit value, the curl preventing action is not promoted so much, and there is a possibility that the hard coat film 1 may be in need of ultra thinness. On the contrary, when the thickness of the first hard coat layer 5 is less than the above lower limit value, the generation of curl may not be effectively prevented.

The tensile modulus of elasticity of the first hard coat layer 5 is not particularly limited, but is preferably 1 GPa or more and 4 GPa or less. Further, the upper limit of the tensile modulus of elasticity of the first hard coat layer 5 is more preferably 3.5 GPa, and further preferably 3 GPa. On the other hand, the lower limit value of the tensile modulus of elasticity of the first hard coat layer 5 is more preferably 1.5 GPa, and further preferably 2 GPa. If the tensile modulus of elasticity of the first hard coat layer 5 exceeds the upper limit value, the generation of curl may not be effectively prevented. On the other hand, when the tensile modulus of elasticity of the first hard coat layer 5 is less than the lower limit value, it may be difficult to form the hard coat film 1 at a desired hardness. In addition, the "tensile elastic modulus" in this invention is the value measured based on JISK7113.

Further, the first hard coat layer 5 is obtained by multiplying the third power of the thickness of the tensile modulus 20kPa · mm ² or more 500kPa · mm ² or less is preferable and, 40kPa · mm ² or more 400kPa · mm ² more preferably less than or equal to More preferably from 60 kPa · mm ² to 300 kPa · mm ² . When the value obtained by multiplying the tensile modulus of elasticity of the first hard coat layer 5 by the third power of the thickness exceeds the upper limit value, the rigidity of the first hard coat layer 5 becomes excessively large, There is a possibility that it may become difficult to keep it in a shape. Conversely, when the value obtained by multiplying the tensile modulus of elasticity of the first hard coat layer 5 by the third power of the thickness is less than the above lower limit value, the first hard coat layer 5 is easily deformed and the stress applied to the base layer 2 There is a fear that this may increase.

The arithmetic mean roughness (Ra) of the surface on one surface side of the first hard coat layer 5 is not particularly limited, but is preferably 0.5 탆 or more and 8 탆 or less. The upper limit of the arithmetic mean roughness (Ra) of the surface on one surface side of the first hard coat layer 5 is more preferably 7 탆, and further preferably 6 탆. On the other hand, the lower limit of the arithmetic mean roughness (Ra) of the surface of one surface side of the first hard coat layer 5 is more preferably 1 탆, and particularly preferably 2 탆. When the arithmetic average roughness Ra of the surface of one surface side of the first hard coat layer 5 exceeds the upper limit value, a second hard coat layer (not shown) formed on one surface side of the first hard coat layer 5 6 may become thick. On the other hand, when the arithmetic average roughness Ra of the surface of one surface side of the first hard coat layer 5 is less than the lower limit value, the surface area of one surface of the first hard coat layer 5 is not sufficiently increased, 2 adhesion with the hard coat layer 6 may be deteriorated. On the other hand, when the arithmetic mean roughness (Ra) of the surface of one surface side of the first hard coat layer 5 is within the above range, while maintaining the thickness of the second hard coat layer 6 appropriately, The adhesion between the coat layer 5 and the second hard coat layer 6 can be effectively improved.

The 10-point average roughness (Rz) of the surface on one side of the first hard coat layer 5 is not particularly limited, but is preferably 0.5 탆 or more and 10 탆 or less. The upper limit value of the ten-point average roughness (Rz) of the surface on one surface side of the first hard coat layer 5 is more preferably 9 탆, and further preferably 8 탆. On the other hand, the lower limit value of the ten-point average roughness (Rz) of the surface on one surface side of the first hard coat layer 5 is more preferably 1 占 퐉, and further preferably 2 占 퐉. When the 10-point average roughness Rz of the surface of one surface side of the first hard coat layer 5 exceeds the upper limit, there is a high possibility that the thickness of the second hard coat layer 6 becomes thick. On the other hand, when the ten-point average roughness Rz of the surface of one surface of the first hard coat layer 5 is less than the lower limit, the surface area of one surface of the first hard coat layer 5 does not increase sufficiently The adhesion to the second hard coat layer 6 may be deteriorated. In addition, "arithmetic mean roughness Ra" and "ten point average roughness Rz" are the values based on JISB0601-2001.

The method of producing the first hard coat layer 5 is not particularly limited, but it can be produced by applying an active energy ray hardening resin to one surface of the base layer 2, drying it, and irradiating it with an active energy ray. The method of applying the active energy ray curable resin is not particularly limited as long as it can uniformly coat the active energy ray curable resin on one surface of the base layer 2, and examples thereof include a spin coating method, a spray method, Coating method, dipping method, bar coating method, roll coater method, screen printing method and the like. In the production of the first hard coat layer 5, a surface modification treatment such as a plasma treatment under an inert gas atmosphere such as argon gas or nitrogen gas may be performed as a pretreatment, if necessary. Alternatively, the undercoat layer may be laminated on the surface of the substrate layer 2, and the first hard coat layer 5 may be laminated through the undercoat layer.

(The second hard coat layer 6)

A second hard coat layer 6 is formed on one side of the first hard coat layer 5. The material for forming the second hard coat layer 6 is not particularly limited. The second hard coat layer 6 may be formed solely of resin, or an additive such as fine silica particles may be contained therein.

Examples of the resin for forming the second hard coat layer 6 include thermosetting resin, active energy ray-curing resin and the like.

The second hard coat layer 6 is formed by, for example, applying a coating composition comprising a polymerizable monomer of an active energy ray hardening resin or a polymerizable oligomer onto one surface of the first hard coat layer 5, Or may be formed by cross-linking and / or polymerizing a monomer or a polymerizable oligomer.

As a functional group of such an active energy ray-curable polymerizable monomer and a polymerizable oligomer, an ultraviolet ray, an electron beam, or a radiation polymerizable thing is preferable, and an ultraviolet polymerizable functional group is especially preferable. As an ultraviolet polymerizable functional group, ethylenically unsaturated polymerizable functional groups, such as a (meth) acryloyl group, a vinyl group, a styryl group, an allyl group, etc. are mentioned.

The coating composition is not particularly limited, but it is preferable to use an acrylic monomer or a urethane acrylate oligomer as a main component. The second hard coat layer 6 is formed from a composition containing these monomers or oligomers as a main component, whereby the hardness can be increased. Especially, it is especially preferable that the 2nd hard-coat layer 6 is formed from the composition containing both urethane acrylate and (meth) acrylate.

The total content of urethane acrylate and (meth) acrylate forming the second hard coat layer 6 is preferably 45 mass% or more and 99 mass% or less, more preferably 50 mass% or more and 95 mass% or less, And particularly preferably not less than 90% by mass. If the total content of urethane acrylate and (meth) acrylate forming the second hard coat layer 6 exceeds the upper limit, the initiation of photopolymerization may be delayed and the productivity may be lowered. If the total content of urethane acrylate and (meth) acrylate forming the second hard coat layer 6 is less than the above lower limit, flexibility, abrasion resistance, scratch resistance and the like may be lowered. On the other hand, when the total content of urethane acrylate and (meth) acrylate forming the second hard coat layer 6 is within the above range, flexibility, abrasion resistance, scratch resistance and the like can be suitably maintained while increasing productivity.

It does not specifically limit as said urethane acrylate, Any of a monomer or an oligomer may be sufficient. The number of functional groups of the urethane acrylate is not particularly limited and may be either a single action or a multifunctional action, but is preferably two or more and preferably six or less, and more preferably two or more and three or less. The second hard coat layer 6 can suitably maintain a balance between the hardness and the elongation percentage by setting the number of functional groups of the urethane acrylate within the above range. Urethane acrylate may be used independently and may be used in combination of 2 or more type.

Although it does not specifically limit as glass transition temperature of resin formed from urethane acrylate, 40 degreeC or more and 100 degrees C or less are preferable, and 40 degreeC or more and 80 degrees C or less are more preferable. When the glass transition temperature of the resin formed from urethane acrylate falls within the above range, the hardness and durability of the second hard coat layer 6 at room temperature can be improved.

The content of the urethane acrylate forming the second hard coat layer 6 is not particularly limited, but is preferably 10% by mass or more and 90% by mass or less, more preferably 15% by mass or more and 85% by mass or less, % Or more and 80 mass% or less. If the content of the urethane acrylate forming the second hard coat layer 6 exceeds the upper limit, the wear resistance and the film hardness may be lowered. If the content of the urethane acrylate forming the second hard coat layer 6 is less than the above lower limit, the flexibility is lowered and the possibility of cracking is increased. On the other hand, if the content of the urethane acrylate forming the second hard coat layer 6 is within the above range, it is possible to maintain appropriate flexibility while suppressing the generation of cracks while appropriately maintaining the abrasion resistance and the film hardness.

It does not specifically limit as said (meth) acrylate, Any of a monomer or an oligomer may be sufficient. The number of functional groups in such a (meth) acrylate is not particularly limited, and may be a monofunctional or a polyfunctional. In addition, the second hard coat layer 6 can improve the durability by using (meth) acrylate having three or more actions. In addition, the (meth) acrylate may have a molecular structure having a polar group or a low polar molecular structure. (Meth) acrylate may be used independently and may be used in combination of 2 or more type.

Examples of the polar group of the (meth) acrylate include a hydroxyl group, a carboxyl group, an amino group and an amide group.

As a (meth) acrylate containing a hydroxyl group, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 2- Hydroxy-3-phenoxypropyl (meth) acrylate, 2- (meth) acryloyloxyethyl-2-hydroxypropyl phthalate, glycerol mono (meth) acrylate, 3-hydroxypropyl (meth) acrylate And (meth) acrylic acid hydroxyl group-containing esters such as 3-hydroxybutyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate.

Examples of the (meth) acrylate containing a carboxyl group include ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid and citraconic acid, (Meth) acryloyloxyethylphthalic acid, 2- (meth) acryloyloxyethylhexahydrophthalic acid, and the like.

Examples of the (meth) acrylate containing an amino group include (meth) acrylate monomethylaminoethyl, (meth) acrylate monoethylaminoethyl, (meth) acrylate monomethylaminopropyl, and (meth) acrylate monoethylaminopropyl. (Meth) acrylic-acid monoalkyl amino ester, such as these, etc. are mentioned.

As (meth) acrylate containing an amide group, acrylamide, such as (meth) acrylamide, N-methyl (meth) acrylamide, and N-methylol (meth) acrylamide, etc. are mentioned, for example.

Examples of (meth) acrylates having a molecular structure with a low polarity include (meta) acrylic acid alicyclic ester or (meth) acrylic acid alkyl ester.

Examples of such (meth) acrylic acid alicyclic ester include cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, dicyclopentadienyl (Meth) acrylate, tricyclodecanyl (meth) acrylate, norbornyl (meth) acrylate and the like.

Examples of the alkyl (meth) acrylate esters include lauryl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, benzyl ) Acrylate, butyl (meth) acrylate, and 1,6-hexanediol acrylate.

The content of (meth) acrylate forming the second hard coat layer 6 is not particularly limited, but is preferably 5 mass% or more and 85 mass% or less, more preferably 10 mass% or more and 80 mass% or less, And particularly preferably 15% by mass or more and 75% by mass or less. If the content of the (meth) acrylate forming the second hard coat layer 6 exceeds the upper limit, there is a high possibility that cracking occurs during molding. If the content of (meth) acrylate forming the second hard coat layer 6 is less than the above lower limit, there is a fear that the abrasion resistance and the hardness of the coating film are lowered. On the other hand, when the content of (meth) acrylate forming the second hard coat layer 6 is within the above range, it is possible to maintain appropriate flexibility while suppressing occurrence of cracking while appropriately maintaining abrasion resistance and film hardness .

Examples of the polymerization initiator include benzophenone, benzyl, Michler's ketone, 2-chlorothioxanthone, 2,4-diethylthioxanthone, benzoin ethyl ether, benzoin isopropyl ether, benzoinisobutyl Ether, 2,2-diethoxyacetophenone, benzyldimethyl ketal, 2,2-dimethoxy-1,2-diphenylethan-1-one, 2-hydroxy- 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropanone-1,1- [4- (2-hydroxyethoxy) 2-methyl-1-propan-1-one, bis (cyclopentadienyl) -bis (2,6-difluoro- Benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2,4,6-trimethylbenzoyldiphenylphosphine oxide. They may be used alone or in combination.

The pencil hardness of the second hard coat layer 6 is 3H or more. The pencil hardness of the second hard coat layer 6 is more preferably 4H or more, and more preferably 5H or more. When the pencil hardness of the second hard coat layer 6 is less than the above lower limit value, it may be difficult to form the hard coat film 1 at a desired hardness.

The thickness of the second hard coat layer 6 is not less than 1 占 퐉 and not more than 10 占 퐉. The upper limit value of the thickness of the second hard coat layer 6 is more preferably 8 占 퐉, and further preferably 6 占 퐉. On the other hand, the lower limit value of the thickness of the second hard coat layer 6 is more preferably 2 m, and further preferably 3 m. When the thickness of the second hard coat layer 6 exceeds the upper limit, the generation of curl can not be effectively prevented, and the hard coat film 1 may be in need of ultra-thinness. On the other hand, when the thickness of the second hard coat layer 6 is less than the above lower limit value, it may be difficult to form the hard coat film 1 with a desired hardness.

The tensile modulus of elasticity of the second hard coat layer 6 is not particularly limited, but is preferably 1.5 GPa or more and 6 GPa or less. The upper limit of the tensile modulus of elasticity of the second hard coat layer 6 is more preferably 5.5 GPa, and further preferably 5 GPa. On the other hand, the lower limit value of the tensile modulus of elasticity of the second hard coat layer 6 is more preferably 2 GPa and more preferably 2.5 GPa. If the tensile modulus of elasticity of the second hard coat layer 6 exceeds the upper limit, it may be difficult to effectively prevent the generation of curl. On the other hand, when the tensile modulus of elasticity of the second hard coat layer 6 is less than the above lower limit value, it may be difficult to form the hard coat film 1 at a desired hardness.

The ratio between the tensile modulus of the second hard coat layer 6 and the tensile modulus of the first hard coat layer 5 is not particularly limited, but is preferably 1.5 or more and 4 or less. As for the upper limit of the ratio of the tensile elasticity modulus of the 2nd hard-coat layer 6, and the tensile elasticity modulus of the 1st hard-coat layer 5, 35 is more preferable and 3 is still more preferable. On the other hand, 1.7 is more preferable and, as for the minimum of the ratio of the tensile elasticity modulus of the 2nd hard-coat layer 6, and the tensile elasticity modulus of the 1st hard-coat layer 5, 2 is still more preferable. When the ratio of the tensile elastic modulus exceeds the upper limit, there is a fear that it is difficult to effectively prevent the generation of curl. On the other hand, when the ratio of the tensile modulus is less than the above lower limit, there is a possibility that the hardness of the hard coat film 1 can not be effectively increased.

The method of producing the second hard coat layer 6 is not particularly limited, but the same method as that of the first hard coat layer 5 can be used.

(The back side hard coat layer 4)

The back side hard coat layer 4 is formed on the other surface of the base layer 2. The main component constituting the back side hard coat layer 4 is the same as the first hard coat layer 5. The additive contained in the back side hard coat layer 4 is also the same as the first hard coat layer 5.

The pencil hardness of the back side hard coat layer 4 is not particularly limited. The thickness of the back side hard coat layer 4 is 50 nm or more and 10 m or less. The upper limit value of the thickness of the back side hard coat layer 4 is more preferably 7 占 퐉, and still more preferably 5 占 퐉. On the other hand, the lower limit value of the thickness of the back side hard coat layer 4 is more preferably 100 nm, further preferably 200 nm. If the thickness of the back side hard coat layer 4 exceeds the upper limit value, there is a high possibility that curling will occur, and there is a fear that the demand for thinning of the hard coat film 1 is compromised. On the other hand, when the thickness of the back side hard coat layer 4 is less than the above lower limit value, there is a possibility that desired hardness can not be obtained. On the other hand, when the thickness of the back side hard coat layer 4 is within the above range, it is possible to suitably improve the hardness and to prevent the occurrence of curl, and to reduce the thickness of the hard coat film 1 .

The method of producing the back side hard coat layer 4 is not particularly limited, but the same method as that of the first hard coat layer 5 can be used.

≪ Hard coat film (1) >

The haze value of the hard coat film (1) is not particularly limited, but is preferably 2% or less, more preferably 1% or less, still more preferably 0.5% or less. When the haze value of the hard coat film 1 exceeds the upper limit value, the visibility of the image is lowered and the sharpness of the displayed image may be lowered.

The visible light transmittance of the hard coat film 1 is not particularly limited, but is preferably 87% or more, more preferably 90% or more. When the visible ray transmittance of the hard coat film 1 is less than the above range, visible rays can not be sufficiently transmitted, which may lower the visibility.

The hard coat film 1 can improve the hardness of the other surface side by the back side hard coat layer 4 formed on the other surface side of the base layer 2. [ Particularly, the hard coat film 1 is formed so that the thickness of the back side hard coat layer 4 is thinner in the above range, thereby improving the hardness of the other surface side, It is possible to prevent the curl from being generated due to the hardness difference with the coat layer (4). The hard coat film 1 also has a first hard coat layer 5 arranged between the base layer 2 and the second hard coat layer 6 and having a lower pencil hardness than the second hard coat layer 6 Is installed. Therefore, the hard coat film 1 can prevent the generation of curl due to the difference in hardness between the base layer 2 and the second hard coat layer 6, The hardness of one surface side of the hard coat film 1 can be effectively increased by the second hard coat layer 6. Particularly, the hard coat film 1 is formed such that the first hard coat layer 5 is relatively thick. Therefore, the hard coat film 1 can effectively achieve a buffering function for preventing the generation of curl by the first hard coat layer 5, The hardness of the surface side can be suitably increased. As a result, even if the second hard coat layer 6 is formed relatively thin, the hard coat film 1 can work in a desired hardness in cooperation with the relatively thick first hard coat layer 5 have. In addition, the hard coat film 1 has the above-described structure in which the hardness of the both sides is improved by the first hard coat layer 5, the second hard coat layer 6 and the back surface hard coat layer 4 The ease of handling and the like can be enhanced and the requirement for ultra-thinness can be satisfied.

The hard coat film 1 is a hard coat film having a relatively low hardness such as a polycarbonate resin, a cycloolefin resin, or a polyethylene terephthalate resin, and even when a resin that easily generates curling is used as a main component of the base layer 2, The occurrence of curl can be prevented, and the hardness can be effectively increased. The hard coat film 1 is obtained by using a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin as a main component of the base layer 2 to obtain an in-plane retardation value Ro and a thickness direction retardation value Rth Can be easily reduced. The hard coat film (1) can improve the impact resistance by making the base layer (2) the main component of the polycarbonate resin. In addition, the hard coat film 1 can effectively suppress the change in retardation caused by an external force such as direct sunlight or heat generated by a display by using the cycloolefin resin as the main component of the base layer 2, So that a fine image display can be performed. The hard coat film 1 can more effectively increase the hardness by making the base layer 2 the main component of the polyethylene terephthalate resin.

[Second Embodiment]

≪ Hard coat film (11) >

The hard coat film 11 shown in Fig. 2 has a base layer 2, a surface side hard coat layer 3, and a back side hard coat layer 12 (corresponding to a third hard coat layer). Since the base material layer 2 and the surface-side hard coat layer 3 in this embodiment are the same as the hard coat film 1 of FIG. 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(The back side hard coat layer 12)

The back side hard coat layer 12 is formed on the other surface of the base layer 2. The pencil hardness and thickness of the main component (binder) constituting the back side hard coat layer 12, the additive contained in the back side hard coat layer 12, and the back side hard coat layer 12, (4).

The back side hard coat layer 12 contains high refractive index fine particles dispersedly. Examples of the high refractive index fine particles dispersed in the back side hard coat layer 12 include ZnO, TiO ₂ , CeO ₂ , SnO ₂ , ITO, Cs _{0 .33} WO ₃ , Al ₂ O ₃ , La ₂ O ₃ , ZrO ₂ , Y ₂ O _3, and the like.

The average particle diameter of the high refractive index fine particles is not particularly limited, but is preferably 1 nm or more and 100 nm or less. The upper limit value of the average particle diameter of the high refractive index fine particles is more preferably 80 nm, and still more preferably 60 nm. On the other hand, the lower limit value of the average particle diameter of the high refractive index fine particles is more preferably 5 nm, and further preferably 10 nm. If the average particle diameter of the high refractive index fine particles exceeds the upper limit value, the transparency of the back side hard coat layer 12 may be lowered. On the other hand, when the average particle diameter of the high refractive index fine particles is less than the lower limit value, there is a fear that the dispersibility of the high refractive index fine particles is lowered.

Examples of the method for producing the back side hard coat layer 12 include a method in which the high refractive index fine particles are dispersed in a binder resin and are diluted with a solvent and then coated by a roll coating method, a spin coating method, a dip coating method, a spray coating method, It can be formed by a known coating method such as a spray coating method, a knife coating method, a die coating method, an ink jet method, or a gravure coating method.

The content of the high refractive index fine particles in the binder is not particularly limited, but may be, for example, 10 mass% or more and 60 mass% or less.

The refractive index of the back side hard coat layer 12 is not particularly limited, but is preferably 1.6 or more and 2.3 or less. The upper limit value of the refractive index of the back side hard coat layer 12 is more preferably 2.25, and still more preferably 2.2. On the other hand, the lower limit value of the refractive index of the back side hard coat layer 12 is more preferably 1.7, more preferably 1.75. When the back side hard coat layer 12 of the hard coat film 11 is laminated on the transparent conductive layer such as a touch panel when the refractive index of the back side hard coat layer 12 is not in the above range, The difference between the refractive index of the coat layer 12 and the refractive index of the transparent conductive layer becomes large and the visibility of the electrode pattern formed on the transparent conductive layer becomes high.

Since the hard coat film 11 contains the high refractive index fine particles dispersedly in the back side hard coat layer 12, the refractive index of the back side hard coat layer 12 can be improved. The haze value and the visible light transmittance of the hard coat film 11 are the same as those of the hard coat film 1.

[Third embodiment]

<Transparent conductive laminate 21>

The transparent conductive laminate 21 of FIG. 3 has a hard coat film 11 and a transparent conductive layer 22. Since the hard coat film 11 in this embodiment is the same as the hard coat film 11 in Fig. 2, the same reference numerals are attached thereto and the description is omitted.

(Transparent conductive layer 22)

The transparent conductive layer 22 is laminated on the other surface of the back side hard coat layer 12. The material for forming the transparent conductive layer 22 is not particularly limited as long as it is a conductive material having transparency and conductivity. Examples thereof include inorganic metals and organic conductive polymers. Examples of the inorganic metal include gold, silver, copper, platinum, nickel, tin oxide, and indium tin oxide (ITO). Examples of the organic conductive polymer include organic conductive compositions using polyaniline, polythiophene, polypyrrole, polyquinoxaline, and the like. Among them, ITO or polythiophene-based materials having good optical characteristics, appearance, and conductivity are preferable.

The method of applying the material for forming the transparent conductive layer 22 on the back side hard coat layer 12 is not particularly limited and examples thereof include a roll coating method, a spin coating method, a dip coating method, a spray coating method, A coating method, a knife coating method, a die coating method, an ink jet method, and a gravure coating method. When the material for forming the transparent conductive layer 22 is applied, in order to improve the adhesion with the back side hard coat layer 12, even if the pre-treatment such as the corona discharge treatment is performed on the back side hard coat layer 12 do.

As a method of curing the material for forming the transparent conductive layer 22, for example, a high-pressure mercury lamp, a halogen lamp, a xenon lamp, a nitrogen laser, an electron beam accelerator, or an active energy source such as a radioactive element can be used. It is also preferred that a cumulative dose 50mJ / cm ² or more 5000mJ / cm ² or less in the active energy ray irradiation amount of ultraviolet rays as the wavelength 365nm. When irradiation amount exceeds the said upper limit, there exists a possibility that active energy ray hardening-type resin may color. On the contrary, when the irradiation amount is less than the above lower limit value, there is a fear that the curing becomes insufficient.

In addition, the transparent conductive layer 22 can also be formed by a dry process, such as a sputtering method. The transparent conductive layer 22 is preferably formed by a sputtering method from the viewpoint of adhesion with the back side hard coat layer 12 or from the viewpoint of ultra-thinness.

The thickness of the transparent conductive layer 22 when formed by the sputtering method is not particularly limited, but it is preferably 50 angstroms or more and 2000 angstroms or less. 1000 kPa is preferable and, as for the upper limit of the thickness of the transparent conductive layer 22 in the case of being formed by the said sputtering method, 500 kPa is more preferable. On the other hand, the lower limit of the thickness of the transparent conductive layer 22 in the case of being formed by the sputtering method is more preferably 70 kPa, still more preferably 90 kPa. When the thickness of the transparent conductive layer 22 is in the said range, both electroconductivity and transparency can be kept suitably. In addition, even when the hard coat film 11 has a relatively large thickness, the transparent conductive laminate 21 can promote thinning by making the thickness of the transparent conductive layer 22 fall within the above range.

Since the transparent conductive laminate 21 has the hard coat film 11, curling of the hard coat film 11 can be suitably prevented. Since the transparent conductive laminate 21 is provided with the hard coat film 11, it is possible to improve hardness on both sides of the hard coat film 11 to improve ease of handling and the like, and to meet the demand for ultra-thinness . The transparent conductive layered product 21 can be obtained by bringing the refractive index of the back side hard coat layer 12 and the refractive index of the transparent conductive layer 22 close to each other so that the transparent conductive layer 22 can be reduced.

The difference between the refractive index of the back side hard coat layer 12 and the refractive index of the transparent conductive layer 22 is not particularly limited, but is preferably 0.6 or less, more preferably 0.5 or less, still more preferably 0.3 or less. The difference between the refractive index of the back side hard coat layer 12 and the refractive index of the transparent conductive layer 22 is within the above range so that the visibility of the electrode pattern formed on the transparent conductive layer 22 Can be further reduced.

[Fourth Embodiment]

 <Touch panel 31>

The touch panel 31 of FIG. 4 is formed as a capacitive touch panel. The touch panel 31 has the transparent conductive laminated body 21, the glass substrate 32, and the adhesion layer 33. Since the transparent conductive laminate 21 in this embodiment is the same as the transparent conductive laminate 21 in Fig. 3, the same reference numerals are given and the explanation is omitted.

The transparent conductive laminate 21 is laminated on the glass substrate 32 via the adhesive layer 33. Although it does not specifically limit as the adhesion layer 33, The adhesion layer using well-known adhesive resins, such as acrylic resin and a urethane resin, is mentioned. The touch panel 31 is arranged so that the hard coat film 11 is on the surface side (viewer side) of the transparent conductive layer 22.

Since the touch panel 31 is provided with the hard coat film 11, curling of the hard coat film 11 can be suitably prevented. Further, since the touch panel 31 is provided with the hard coat film 11, it is possible to improve hardness on both sides of the hard coat film 11 to improve ease of handling and the like, have. The touch panel 31 can reduce the visibility of the electrode pattern formed on the transparent conductive layer 22 by bringing the refractive index of the back side hard coat layer 12 close to the refractive index of the transparent conductive layer 22 have.

[Fifth Embodiment]

<Touch panel 41>

The touch panel 41 shown in Fig. 5 is formed as a resistive touch panel. The touch panel 41 includes a transparent conductive laminate 21, a plurality of dot spacers 42, a columnar spacer 43, a transparent conductive layer 44, a high refractive index layer 45, 46). The touch panel 41 is arranged so that the hard coat film 11 is on the surface side of the transparent conductive layer 22. [

The plurality of dot spacers 42 are formed on the surface of the transparent conductive layer 44. As a formation material of the dot spacer 42, insulating resin, such as an epoxy resin and silicone, is mentioned, for example. The columnar spacers 43 are arranged between the transparent conductive layer 22 and the transparent conductive layer 44. As a formation material of the columnar spacer 43, insulating resin, such as an epoxy resin, polyester, an acrylic resin, is mentioned, for example. The columnar spacers 43 are fixed to the peripheral portion on the back side of the transparent conductive layer 22 and fixed to the peripheral portion on the surface side of the transparent conductive layer 44. The columnar spacers 43 are arranged so as to separate the transparent conductive layer 22 and the transparent conductive layer 44 from each other. The transparent conductive layer 44 is laminated on the surface of the high refractive index layer 45 in the same manner as the transparent conductive layer 22. The material for forming the transparent conductive layer 44 is not particularly limited and may be the same as the material for forming the transparent conductive layer 22. [ The high refractive index layer 45 is laminated on the surface of the glass substrate 46. The material for forming the high refractive index layer 45 is not particularly limited, and the same material as the high refractive index layer 12 may be mentioned. The method of laminating the high refractive index layer 45 is not particularly limited, but is laminated on the surface of the glass substrate 46 through, for example, an adhesive layer (not shown).

Since the touch panel 41 is provided with the hard coat film 11, curling of the hard coat film 11 can be suitably prevented. In addition, since the touch panel 41 is provided with the hard coat film 11, it is possible to improve hardness on both sides of the hard coat film 11 to improve ease of handling and the like, have. The touch panel 41 can reduce the visibility of the electrode pattern formed on the transparent conductive layer 22 by bringing the refractive index of the back side hard coat layer 12 and the refractive index of the transparent conductive layer 22 close to each other have.

[Other Embodiments]

Further, the hard coat film of the present invention, the transparent conductive laminate having the hard coat film, and the touch panel having the transparent conductive laminate can be carried out by various modifications and improvements other than those described above . For example, the hard coat film may have an adhesive layer formed on the other surface side. As such an adhesion layer, the adhesion layer using well-known adhesive resins, such as acrylic resin and a urethane resin, is mentioned. The pressure-sensitive adhesive layer can be formed by applying a pressure-sensitive adhesive solution onto the other surface side of the substrate layer or high refractive index layer and drying the pressure-sensitive adhesive solution. The adhesive layer may be formed by applying a pressure sensitive adhesive solution to one surface of the separator in advance and drying it, followed by bonding with the third hard coat layer.

In addition, the hard coat film may contain, as a main component, a synthetic resin having a relatively high refractive index, instead of dispersing or containing high-refractive-index fine particles in the third hard coat layer or containing high-refractive-index fine particles dispersed therein. Examples of such a synthetic resin include phenol resin, melamine resin, polyurethane resin, urea resin, diallyl phthalate resin, guanamine resin, unsaturated polyester resin, aminoalkyd resin, melamine-urea co- Polysiloxane resin, and the like. The hard coat film may be laminated with another layer (for example, a UV absorbing layer, an antistatic layer, an antireflection layer, or the like) on the second hard coat layer. The hard coat film may have an intermediate layer between the substrate layer and the first hard coat layer, or between the first hard coat layer and the second hard coat layer, or between the substrate layer and the third hard coat layer. The hard coat film can be used for a variety of touch panels such as electrostatic capacity type, resistance film type, and electromagnetic induction type. The hard coat film can be used for various liquid crystal display modules such as a three-dimensional image display device in addition to a touch panel. In addition to being laminated on the transparent conductive layer, the hard coat film can be used for reinforcing the surface of members such as various optical members, lenses, disks, building materials, miscellaneous goods.

As described above, the hard coat film of the present invention, the transparent conductive laminate including the hard coat film, and the touch panel including the transparent conductive laminate can improve the hardness of the hard coat film, It can be suitably used for various liquid crystal display modules other than the touch panel.

1 hard coat film 2 substrate layer
3 surface side hard coat layer
4 back side hard coat layer (third hard coat layer)
5 First Hard Coat Layer 6 Second Hard Coat Layer
11 hard coat film
12 back side hard coat layer (third hard coat layer)
21 Transparent conductive laminate 22 Transparent conductive layer
31 touch panel 32 glass substrate
33 Adhesive layer 41 Touch panel
42 dot spacer 43 Columnar spacer
44 Transparent conductive layer 45 High refractive index layer
46 glass substrate

Claims (14)

A transparent base layer,
A first hard coat layer formed on one surface side of the base layer,
A second hard coat layer formed on one surface side of the first hard coat layer,
A third hard coat layer formed on the other surface side of the base layer
And,
The pencil hardness of the first hard coat layer is lower than the pencil hardness of the second hard coat layer,
The pencil hardness of the second hard coat layer is 3H or more,
The thickness of the said 1st hard-coat layer is 4 times or more and 20 times or less of the thickness of a 2nd hard-coat layer,
The thickness of the said 2nd hard-coat layer is 1 micrometer or more and 10 micrometers or less,
The thickness of the said 3rd hard-coat layer is 5 Onm or more and 10 micrometers or less, The hard coat film characterized by the above-mentioned. The method of claim 1,
Wherein the first hard coat layer has a pencil hardness of F or more and H or less. The method of claim 1,
Wherein the thickness of the first hard coat layer is 20 占 퐉 or more and 100 占 퐉 or less. The method of claim 1,
Wherein the base layer has a pencil hardness of 8B or more and F or less. The method of claim 1,
Wherein the main component of the base layer is a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin. The method of claim 1,
Wherein the in-plane retardation value (Ro) of the base layer is 100 nm or less and the retardation value (Rth) in the thickness direction is 200 nm or less. The method of claim 1,
Wherein the main component of the first hard coat layer is an ultraviolet ray hardening resin. The method of claim 7, wherein
Wherein the ultraviolet-curable resin is a cationic polymerizable resin. The method of claim 7, wherein
Wherein the first hard coat layer contains an ultraviolet ray hardening agent. The method of claim 1,
The said 3rd hard-coat layer disperse | distributes high refractive index microparticles | fine-particles, The hard coat film characterized by the above-mentioned. 11. The method of claim 10,
The refractive index of the said 3rd hard-coat layer is 1.6 or more and 2.3 or less, The hard coat film characterized by the above-mentioned. The hard coat film of Claim 10 or 11,
And a transparent conductive layer laminated on the other surface of the third hard coat layer. 13. The method of claim 12,
Wherein a difference between a refractive index of the third hard coat layer and a refractive index of the transparent conductive layer is 0.6 or less. The transparent conductive laminated body of Claim 12 is provided, The touchscreen characterized by the above-mentioned.

Images