JP2000052472A - Hard coat film or sheet, and hard coat film or sheet with functional inorganic thin film - Google Patents

Abstract

(57) [Problem] When a plastic film or sheet is used as a support for forming a hard coat, adhesion between the hard coat and the substrate, film bending crack, curl, etc. can be kept within a practically allowable range. To provide a hard coat film or sheet having a pencil hardness value of 4H or more. A hard coat film or sheet provided with a cured resin coating layer on a transparent plastic film or sheet base material, wherein a first hard coat layer on the base material is formed of an inorganic or organic material. After providing the layer containing the crosslinked ultrafine particles 40, the second
A hard coat film or sheet 1 which is a cured resin coating layer 50 provided with a thin film of a clear cured resin as the hard coat layer 30.
0 has an average particle diameter of 0.01 μm or more and 5.0 μm or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic film or sheet to be attached to optical members such as various displays, lenses, mirrors, goggles, window glasses, etc. for the purpose of protection, and particularly to scratch resistance and scratch resistance. The present invention relates to a plastic film provided with properties.

[0002]

2. Description of the Related Art Conventionally, liquid crystal display devices, CRT display devices,
In addition, a transparent plastic film having scratch resistance and scratch resistance is often attached to optical members such as commercial displays, lenses, mirrors, window glasses, and goggles. Generally, as a technique for hardening a plastic surface, a method of coating a thermosetting resin such as an organosiloxane type or a melamine type, forming a metal thin film by a vacuum deposition method or a sputtering method, or a polyfunctional acrylate type is used. Coating with active energy ray-curable resin. In recent years, among such methods, an active energy ray-curable resin which can easily process a large area and has excellent productivity is often used. However, in any of these methods, the pencil hardness value on a plastic film or sheet substrate is within a range in which adhesion between the hard coat / substrate, cracks when bending the film, curling of the film, and the like are not practically problematic. In many cases, 2H to 3H is the limit, and there is a demand for 4H or more.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to solve the problem even when a plastic film or sheet is used as a support for forming a hard coat. Hard coat having a pencil hardness value of 4H or more, which can keep the adhesion between the hard coat / substrate, cracks when bending the film, curl of the film, etc. within a practically acceptable range, and exceeds the conventional limit. To provide a film or sheet.

[0004]

Means for Solving the Problems In order to achieve the above object in the present invention, first, in the invention of claim 1, a cured resin coating layer is provided on at least one surface of a transparent plastic film or a sheet substrate. A hard coat film or sheet, wherein a cured resin layer containing inorganic or organic internally crosslinked ultrafine particles is provided as a first hard coat layer on the substrate, and then an inorganic or organic material is formed as a second hard coat layer. A hard coat film or sheet, which is a cured resin film layer provided with a thin film of a clear cured resin containing no internally crosslinked ultrafine particles.

In the invention of claim 2, the inorganic or organic internally crosslinked ultrafine particles have an average particle size of 0.0
The hard coat film or sheet according to claim 1, wherein the thickness is 1 μm or more and 5.0 μm or less.

In the invention of claim 3, the thickness of the first hard coat layer is not less than 3.0 μm and not more than 30 μm, and the thickness of the second hard coat layer is not less than 1.0 μm and not more than 2 μm.
The hard coat film or sheet according to claim 1 or 2, wherein the thickness is 0 µm or less.

Further, in the invention according to claim 4, the elastic modulus of the first hard coat layer below the breaking strain is 0.5 GPa.
To 4.5 GPa, and the modulus of elasticity of the second hard coat layer below the breaking strain is 1.0 GPa to 6.0 GPa.
2. The method according to claim 1, wherein the pressure is set in a range of Pa.
4. The hard coat film or sheet according to any one of items 3 to 3.

According to a fifth aspect of the present invention, the cured resin film layer is cross-linked through a processing step of irradiating the active energy ray-curable resin with ultraviolet rays or electron beams. The hard coat film or sheet according to any one of the above.

Further, according to a sixth aspect of the present invention, a functional inorganic thin film is provided on the hard coat film or sheet according to the first, second, third, fourth or fifth aspect. It is a hard coat film or sheet with a thin film.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail. As shown in FIG. 1, the hard coat film or sheet of the present invention has a hard plastic film or sheet (1) having a cured resin coating layer (50) provided on at least one surface of a transparent plastic film or sheet substrate (10). ), A cured resin layer containing inorganic or organic internally crosslinked ultrafine particles (40) is provided as a first hard coat layer (20) on the substrate (10), and then a second hard coat layer is formed. (30) a cured resin coating layer (5) provided with a thin film of a clear cured resin containing no inorganic or organic internally crosslinked ultrafine particles (40);
0), which gives the cured resin film layer (50) a characteristic.

Here, the constituent materials of the hard coat film or sheet (1) will be described first, and then the manufacturing method will be described.

The transparent plastic film or sheet substrate (10) used in the present invention is not particularly limited, and may be appropriately selected from known transparent plastic films or sheets. Specific examples include polyester, polyethylene, polypropylene, cellophane, triacetyl cellulose, diacetyl cellulose, acetyl cellulose butyrate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol,
Examples include films or sheets of ethylene vinyl alcohol, polystyrene, polycarbonate, polymethylpentene, polysulfone, polyetheretherketone, acrylic, nylon, fluorine resin, polyimide, polyetherimide, polyethersulfone, etc. In particular, a triacetylcellulose film and a uniaxially stretched polyester are preferable because they have excellent transparency and do not have optical anisotropy.

It is particularly preferable to use an active energy ray (ultraviolet ray or electron beam) curable resin for the cured resin coating layer (50) because of its high processing speed and little heat damage to the support. . Examples of such an ultraviolet-curable resin include, for example, polyfunctional acrylate resins such as acrylic acid or methacrylic acid ester of polyhydric alcohol, diisocyanate, polyhydric alcohol and hydroxyalkyl ester of acrylic acid or methacrylic acid. And a polyfunctional urethane acrylate resin. Further, a polyether resin, a polyester resin, an epoxy resin, an alkyd resin, a spiroacetal resin, a polybutadiene resin, a polythiolpolyene resin or the like having an acrylate-based functional group can be suitably used as necessary.

Reactive diluents for these resins include relatively low-viscosity 1,6-hexanediol di (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, and hexane. Bifunctional or more functional monomers and oligomers such as diol (meth) acrylate, pentaerythritol tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, neopentyl glycol di (meth) acrylate, and the like Monofunctional monomers, for example, N-vinylpyrrolidone, ethyl acrylate, acrylates such as propyl acrylate,
Ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, hexyl methacrylate, isooctyl methacrylate, 2
-Hydroxyethyl methacrylate, cyclohexyl methacrylate, methacrylic acid esters such as nonylphenyl methacrylate, tetrahydrofurfuryl methacrylate, and derivatives thereof such as modified caprolactone,
Styrene, α-methylstyrene, acrylic acid and the like and mixtures thereof can be used.

In the present invention, when the active energy rays are ultraviolet rays, it is necessary to add a photosensitizer (radical polymerization initiator), and benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether Benzoin and its alkyl ethers, such as benzylmethyl ketal and acetophenone;
Acetophenones such as 2-dimethoxy-2-phenylacetophenone and 1-hydroxycyclohexylphenyl ketone; anthraquinones such as methylanthraquinone, 2-ethylanthraquinone and 2-amylanthraquinone; thioxanthone, 2,4-diethylthioxanthone and 2,4 Thioxanthones such as diisopropylthioxanthone; ketals such as acetophenone dimethyl ketal and benzyl dimethyl ketal; benzophenones such as benzophenone and 4,4-bismethylaminobenzophenone; and azo compounds. These can be used alone or as a mixture of two or more kinds. Further, tertiary amines such as triethanolamine and methyldiethanolamine; 2-dimethylaminoethylbenzoic acid;
It can be used in combination with a photoinitiating auxiliary such as a benzoic acid derivative such as ethyl 4-dimethylaminobenzoate. The amount of the organic peroxide or photopolymerization initiator used is 0.5 to 2 parts by weight per 100 parts by weight of the polymerizable component of the resin composition.
0 parts by weight, preferably 1 to 15 parts by weight.

Inorganic or organic ultrafine crosslinked particles (40) contained in the first hard coat layer (20) of the present invention.
Any fine particles that maintain good transparency in an active energy ray-curable resin can be used.

The inorganic fine particles generally include fine particles made of silica, alumina, titania, zirconia and the like, but silica particles, particularly synthetic silica particles, are preferable in terms of transparency. In addition, tin oxide, indium oxide,
Conductive transparent fine particles such as cadmium oxide and antimony oxide can also be used as necessary regardless of imparting antistatic properties.

As the organic fine particles, hard fine particles having an appropriate crosslinked structure inside the particles and hardly swelling due to an active energy ray-curable resin, a monomer, a solvent or the like can be used. For example, styrene resin, styrene-acrylic copolymer resin, acrylic resin, divinylbenzene resin, silicone resin, urethane resin, melamine resin, styrene-isoprene resin, benzoguanamine resin, the above resin, etc. For example, a microgel containing as a main component can be used.

If necessary, known general paint additives can be blended. For example, silicone-based and fluorine-based additives for imparting leveling and surface slip properties are effective in preventing scratches on the cured film surface. By bleeding at the interface, the inhibition of curing of the resin by oxygen can be reduced, and an effective curing degree can be obtained even under low irradiation intensity conditions. The appropriate amount of these additives is 0.01 to 0.5 parts by weight based on 100 parts by weight of the active energy ray-curable resin.

The main constituent materials that can be used in the present invention have been described above. Next, a method for producing a hard coat film or sheet (1) for forming an inorganic thin film will be specifically described. The method of applying the first hard coat layer (20) and the second hard coat layer (30) is optional, but in the production stage, a roll coater, a reverse roll coater, a gravure coater, a knife coater, a bar coater, or the like is generally used. It is a target. When ultraviolet rays are used as the active energy ray source, light sources such as high-pressure mercury lamps, low-pressure mercury lamps, ultra-high-pressure mercury lamps, metal halide lamps, carbon arcs, and xenon arcs can be used. Metal halide lamps are generally used when fillers are included or when thick films are cured. In the case of curing using electron beam, Cockloft-Wald type, Bande-Craft type, Resonant transformer type, Insulating core transformer type,
An electron beam having an energy of 50 to 1000 Kev, preferably 100 to 300 Kev, emitted from various electron beam accelerators such as a linear type, a dynamitron type, and a high frequency type can be used.

The first hard coat layer (20) constituting the hard coat film or sheet (1) of the present invention is composed of a curable resin containing inorganic or organic internally crosslinked ultrafine particles (40) in a paint component. Is applied so that the film thickness after curing becomes 3.0 μm or more, preferably 30 μm or less, and then completely cured or semi-cured (half-cured) by irradiation with active energy rays. However,
Semi-cured refers to a cross-linked coating at the stage where the physical properties (hardness, scratch resistance, etc.) of the coating have not completely reached saturation. Means The inorganic or organic internally crosslinked ultrafine particles (40) are compounded by a known mechanical forced dispersion method such as a disper mixer or a sand mill, if necessary. Next, a second hard coat layer (30) made of a clear cured resin is applied on the first hard coat layer (20) so that the film thickness after curing becomes about 1.0 μm to 20 μm.
It is cured by irradiation with active energy rays.
In this case, if the first hard coat layer (20) has already been completely cured, the second hard coat layer (30)
Only when the first hard coat layer (20) is in a semi-cured state, the first hard coat layer (20) and the second hard coat layer (30) are simultaneously cured. Preferably, it is often the case that the first hard coat layer (20) is semi-cured to improve the adhesion between the first and second hard coat layers.

Examples of applications of the hard coat film or sheet of the present invention as described above include a liquid crystal display, a CRT display, a plasma display, an electrochromic display, a light emitting diode display, an EL display, and the like. It is suitable for screen protection of various display devices. Further, the hard coat film or sheet of the present invention is mainly composed of an inorganic material having various functions such as an infrared absorption effect, an infrared reflection effect, an electromagnetic wave shielding effect, an antistatic effect, an ultraviolet absorption effect, an antireflection effect, and a reflection enhancement effect. It can be used for the purpose of providing a functional thin film formed on the surface.

[0023]

Next, the present invention will be described specifically with reference to examples and comparative examples, but the present invention is not limited to these examples. Parts and percentages are by weight unless otherwise specified. <Example 1> [Formation of first hard coat layer (20)] Colloidal silica (average particle diameter: 10 to 10) was used as internally crosslinked fine particles (40).
20 nm) was prepared as a first hard coat resin liquid according to the following formulation. -40 parts of ditrimethylolpropane tetraacrylate-20 parts of pentaerythritol triacrylate-3 parts of Darocur 1173 (manufactured by Ciba Geigy)-140 parts of colloidal silica MEK-ST (average particle size: 10 to 20 nm, manufactured by Nissan Chemical Co.)-2-butanone 60 parts

Next, the UV-curable coating composition obtained above was applied to one side of a 150 μm-thick polyester film by a wire bar, and the solvent was evaporated to form a coating layer having a thickness of 6.1 μm. After formation, ultraviolet light from a high-pressure mercury UV lamp (120 W / cm) was applied from the coating side to an integrated light amount of about 1
Irradiation was performed under the conditions of 20 mJ / m ² and curing treatment was performed to prepare a first hard coat layer (20).

[Formation of Second Hard Coat Layer (30)] An ultraviolet-curable clear coating composition containing no internally crosslinked fine particles (40) and having the following formulation was prepared as a second hard coat resin solution.・ Ditrimethylolpropane tetraacrylate 40 parts ・ Pentaerythritol triacrylate 20 parts ・ Darocur 1173 (manufactured by Ciba-Geigy) 3 parts ・ 2-butanone 60 parts

Next, the second hard coat layer (3) having the above composition is formed on the first hard coat layer (20) cured by ultraviolet rays.
0) was dried to form a coating layer having a thickness of about 5.2 μm, and then a high-pressure mercury UV lamp (120 W / c
m) is irradiated under the condition of an integrated light quantity of about 300 mJ / m ² , and is subjected to a curing treatment, whereby the base material (1), the first hard coat layer (20) and the second hard coat layer (30)
A hard coat film (1) consisting of three layers was obtained.

[Formation of Functional Inorganic Thin Film Layer] Next, as a specific example of the functional inorganic thin film layer, a conductive antireflection layer is formed on the hard coat layer, that is, the cured resin coating layer (50) by the following constitution and method. Formed. First, indium tin oxide (ITO) was formed as a high refractive index layer by a sputtering method, and an antireflection layer made of silicon oxide was formed as a low refractive index layer by a plasma assisted vapor deposition method. The refractive index n of each layer,
The shape film thickness d and the optical film thickness nd are as follows: PET film (n = 1.62) Hard coat layer (n = 1.52 d = about 5 μm) First layer: ITO (nH = 2.05 d) Second layer: SiO ₂ (nL = 1.46 d = about 38 nm) Third layer: ITO (nH = 2.05 d = about 125 nm) Fourth layer: SiO ₂ (nL = 1) .46 d = about 140 nm). Here, nH represents a high refractive index, and nL represents a low refractive index. The optical film thickness was monitored by an optical film thickness monitor. When the target light amount was reached, the film formation was stopped and a predetermined optical film thickness was obtained. The reflectance is 1% in the wavelength range of 430 to 680 nm.
It was below. The adhesion between the cured resin coating layer (50) and the conductive antireflection layer was good.

<Example 2> Instead of the colloidal silica used in the first hard coat formulation of Example 1, crosslinked acrylic fine particles were used as the internally crosslinked fine particles (40), and the first hard coat resin was prepared according to the following formulation. It was prepared as a liquid.
The crosslinked acrylic fine particles were dispersed in the coating solution using a homogenizer. Coating composition of second hard coat, first and second
The ultraviolet curing conditions of the hard coat layer, the method and conditions for forming the functional inorganic thin film layer, and the like were the same as in Example 1. The thicknesses of the first hard coat layer (20) and the second hard coat layer (30) were 6.4 μm and 5.0 μm, respectively. -40 parts of ditrimethylolpropane tetraacrylate-20 parts of pentaerythritol triacrylate-3 parts of Darocur 1173 (manufactured by Ciba-Geigy)-40 parts of crosslinked acrylic particles MR-2G (average particle diameter: 0.9 [mu] m manufactured by Soken Kagaku)-2-butanone 400 copies

<Comparative Example 1> The first hard coat formulation described in Example 1 did not contain colloidal silica as the internally crosslinked fine particles (40), and had a composition containing only the clear resin. Second
Hard coat coating composition, first hard coat layer (20)
The UV curing conditions for the second hard coat layer (30), the method and conditions for forming the functional inorganic thin film layer, and the like were the same as in Example 1. The thicknesses of the first hard coat layer (20) and the second hard coat layer (30) are 6.0 μm and 5.2 μm, respectively.
m.

Comparative Example 2 The second hard coat layer (30) was not provided with the first hard coat layer (20) described in Example 1.
Only with a film thickness of 11.2 μm. The ultraviolet curing conditions for the second hard coat layer (30), the method and conditions for forming the functional inorganic thin film layer, and the like were the same as in Example 1.

<Comparative Example 3> The first hard coat layer (20) was provided without the second hard coat layer (30) described in Example 1.
Only with a film thickness of 12.3 μm. The ultraviolet curing conditions of the first hard coat layer (20), the method and conditions for forming the functional inorganic thin film layer, and the like were the same as those in Example 1.

The physical properties of the hard coat films obtained in the above Examples and Comparative Examples and the hard coat films having a conductive anti-reflection function were measured by the following measuring methods, and the evaluation results were shown in Tables 1 and 2, respectively. 2 is shown.

[Evaluation method] "Pencil hardness": Pencils having different hardnesses were used to determine the presence or absence of scratches by a test method specified in JIS K5400 under a load of 1 kg. -"Scratch resistance": with # 0000 steel wool,
Applying a load of 400 g on the surface of the hard coat film
After rubbing 0 times, the presence or absence of scratches and the degree of scratches were visually observed and evaluated according to the following criteria. A: No scratch is observed. B: Several small scratches are observed. C: Countless scratches are observed.・ "Adhesion": 1m with a cutter on the surface of the cured coating layer
After putting 100 cross hatches (squares) of mx 1 mm and pasting cellophane tape (Nichiban) on it,
When the cellophane tape was peeled off, the number of squares in which the cured film was peeled off from the film substrate was evaluated. -"Curl": A specimen of a hard coat film and a hard coat film with a conductive antireflection function were cut into 10 cm squares, and the curvature and radius were measured to calculate the radius of curvature. -"Crack": The presence or absence of cracks when the hard coat film and the hard coat film with a conductive antireflection function were wound around a metal roll having a diameter of 3 cm was visually determined.

[0034]

[Table 1]

[0035]

[Table 2]

Table 3 summarizes the film thicknesses of the hard coat films or sheets (1) of the above Examples and Comparative Examples, and the elastic moduli calculated by the following.

[Hard coat layer (cured resin coating layer (5
0)) Elastic Modulus] The elastic modulus (Ef) of the hard coat layer was calculated using the following internal stress equation. The elastic modulus (Es) of the polyester film and the elastic modulus (Ec) of the composite film composed of the polyester film / hard coat layer were determined from the initial slope of the stress-strain curve using a tensile strength tester. However, since a crack easily occurs in the hard coat layer, a stress-strain curve below a breaking strain at which a crack occurs is used. σc (b + d) = σfd + σsb Ec (b + d) = Efd + Esb∴Ef = (Ec (b + d) −Esb) / d σc: internal stress of the entire composite film σf: internal stress of the hard coat layer σs: internal stress of the polyester film Ec: Ef: elastic modulus of hard coat layer Es: elastic modulus of polyester film b: thickness of polyester film d: thickness of hard coat layer

[0038]

[Table 3]

According to the above table, the first hard coat layer (2) containing the internally crosslinked fine particles (40) shown in Examples 1 and 2 was used.
0) on top of the second of the clear cured resin containing no fine particles.
In the layer configuration provided with the hard coat layer (30), the pencil hardness is 4H, the adhesion, the scratch resistance, the curl, the crack, etc. are satisfied without any practical problems, and the balance between the hardness and other physical properties is good. Was. Furthermore, even when a conductive anti-reflection layer was provided as a specific example of the functional inorganic thin film on the hard coat, there was almost no change in performance, and good mechanical properties were achieved.

In Comparative Example 1, a pencil hardness of 4H was achieved because the film thickness was 10 μm or more. However, since there was no effect of reducing the curing shrinkage of the internally crosslinked fine particles, the curl was large, the elastic modulus was high, and the curing was large. Reflection of the shrinkage reduced the adhesion, and cracks also occurred.

Further, Comparative Example 2 satisfies the pencil hardness of 4H sufficiently as in Comparative Example 1, but has a large curl, a low elasticity and a large curing shrinkage, and the adhesion is reduced.
More cracks occurred in the film.

In contrast, Comparative Example 3 satisfies adhesion, scratch resistance, curl, and cracks, contrary to the results of Comparative Examples 1 and 2, but reflects a lower elastic modulus than the other examples. The hardness decreased and only met the 3H level.

[0043]

As described above, the present invention has the following effects. That is, by providing a hard coat layer having a function of curing shrinkage shrinkage by blending the internally crosslinked fine particles between the film or sheet substrate and the hard coat made of the clear cured resin, the layer configuration is a two-layer hard coat film, A hard coat film or sheet capable of keeping the adhesion between the hard coat / substrate, cracking when bending the film, curling of the film, etc. within a practically acceptable range, and achieving a pencil hardness value of 4H or more. Can be provided.

Further, the hard coat of the present invention can be used for an optical film having an antireflection function having excellent surface hardness.

Therefore, the present invention exerts excellent practical effects in applications such as adhesive films for protecting various displays such as liquid crystal display devices, optical members such as lenses and mirrors.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a hard coat film or sheet of the present invention in a side cross section.

[Explanation of symbols]

 1 hard coat film or sheet 10 transparent plastic film or sheet substrate 20 first hard coat layer 30 second hard coat layer 40 inorganic or organic internally crosslinked ultrafine particles 50 cured resin Coating layer

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 2H042 AA07 AA21 AA26 AA32 AA33 2K009 AA15 BB11 BB14 BB15 BB24 CC21 CC24 CC33 DD02 DD05 EE03 4F100 AA00B AA00C AA20B AH00B AH00C AK01B01A01 BAK AK01BAK EJ05C GB90 JB12B JB12C JB14B JB14C JK07B JK07C JK12B JK12C JK14 JM02C JN01A YY00B YY00C

Claims (6)

[Claims] 1. A hard coat film or sheet having a cured resin coating layer provided on at least one surface of a transparent plastic film or sheet substrate, wherein a first hard coat layer is formed on the substrate as an inorganic or organic material. A cured resin film layer comprising a cured resin layer containing crosslinked ultrafine particles, and a thin film of a clear cured resin containing no inorganic or organic internal crosslinked ultrafine particles as a second hard coat layer. Hard coat film or sheet. 2. The hard coat film or sheet according to claim 1, wherein the inorganic or organic internally crosslinked ultrafine particles have an average particle size of 0.01 μm or more and 5.0 μm or less. 3. The first hard coat layer has a thickness of 3.0.
The hard coat film or sheet according to claim 1, wherein the thickness of the second hard coat layer is from 1.0 μm to 30 μm, and the thickness of the second hard coat layer is from 1.0 μm to 20 μm. 4. The elastic modulus of the first hard coat layer below the breaking strain is 0.5 GPa to 4.5 GPa, and the elastic modulus of the first hard coat layer below the breaking strain is not more than 0.5 GPa.
The hard coat film or sheet according to any one of claims 1 to 3, wherein the hard coat film or the sheet is set in a range from 1.0 GPa to 6.0 GPa. 5. The cured resin film layer is formed by cross-linking an active energy ray-curable resin through a processing step of irradiating an ultraviolet ray or an electron beam.
The hard coat film or sheet according to any one of the above. 6. A hard coat film or sheet with a functional inorganic thin film, wherein a functional inorganic thin film is provided on the hard coat film or sheet according to claim 1, 2, 3, 4, or 5. .