JP2000094590A - Antistatic colored hard coat film and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be excellent in durability by being attached to a surface of various displays, for example, a flat CRT glass surface formed such that a curvature of a phosphor surface side and an outer surface side of the CRT glass are different from each other. It is excellent in transparency and antistatic properties, and prevents the occurrence of color unevenness as seen in colored glass. SOLUTION: The transparent base film 1 includes a transparent conductive layer 4 provided on one surface of the transparent base film 1, and a hard coat layer 5 provided on the transparent conductive layer 4. And an antistatic colored hard coat film including an adhesive layer 3 provided on the other surface of the transparent base material film 1 and a release film provided on the adhesive layer 3; Either the colored layer 2 is provided between the layers, or any of the layers is an antistatic hard coat film containing a coloring material. If the hard coat layer 5 is made anisotropically conductive, the transparency and the antistatic property are further enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic colored hard coat film used for coloring a display device such as a display, and a display device having the antistatic colored hard coat film attached thereto.

[0002]

2. Description of the Related Art Conventionally, in a CRT, a display phosphor applied to a CRT glass is irradiated with electrons, and the phosphor emits light to perform display. For the purpose of preventing the color of the display phosphor itself from being recognized from the outside and preventing the texture from deteriorating, a light coloration having a transmittance of about 40 to 80% is performed by adding a coloring material to the CRT glass. It has been given by.

[0003] Controlling the visible light transmittance to about 40 to 80% is necessary from the viewpoint of the balance of the contrast of the three primary colors, and is also for the purpose of improving the image contrast.

Further, when the transmittance is less than 40%, the brightness is lowered, which is not preferable. When the transmittance is more than 80%, it is too bright, so that the effect of improving the contrast cannot be expected, and the effect of concealment cannot be obtained. .

[0005] Incidentally, depending on the shape of the CRT glass, there are portions where the thickness of the glass is different, and the entire thickness is not necessarily uniform. In a conventional CRT glass, since a coloring material is contained in the entire glass layer, it is recognized that there is a concentration gradient in coloring in a portion where the thickness is non-uniform,
There is a problem of causing so-called color unevenness.

Further, in order to impart antistatic properties to a film, conventionally, conductive carbon fine particles, conductive powder such as metal oxide, and metal fine particles have been kneaded, mixed, or applied. However, the antistatic film obtained by these methods has extremely low transparency,
When applied to the surface of a display device such as a CRT, there is a problem that visibility is deteriorated.

[0007]

Recently, flattening of CRT glass is being promoted. However, flat-type CRTs are often formed so that the CRT glass has different curvatures on the phosphor surface side and the outer surface side. However, in a CRT having such a shape, since the glass thickness of the peripheral portion and the central portion of the CRT is different, if the colorant is contained in the glass layer, the transmittance of the peripheral portion differs from that of the central portion. It tends to appear more remarkably than a three-dimensional curved surface or a two-dimensional curved surface CRT, which causes color unevenness or the like. Such a problem is a problem to be solved particularly when a CRT for a high-definition display or a high-definition television is manufactured.

Accordingly, the present invention provides a colored hard coat film having antistatic properties and excellent durability, which can be applied to the surface of various displays and can prevent the occurrence of color unevenness such as colored glass. It is an object to provide a used display device. A further object of the present invention is to provide, in addition to the above objects, an antistatic colored hard coat film particularly suitable for a flat display using glass and a display device using the film.

Another object of the present invention is to provide, in addition to the above objects, an antistatic colored hard coat film having excellent transparency and a display device using the film.

[0010]

In order to solve the above-mentioned problems, an antistatic colored hard coat film of the present invention comprises a transparent base film and a transparent base film provided on one surface of the transparent base film. Including a conductive layer and a hard coat layer provided on the transparent conductive layer, and an adhesive layer provided on the other surface of the transparent substrate film, a separation layer provided on the adhesive layer An antistatic colored hard coat film including a mold film, characterized in that it has a colored layer between any of the layers or that any of the layers contains a coloring material.

The antistatic colored hard coat film of the present invention has a surface resistivity of the transparent conductive layer of 10 ¹² Ω ·
cm or a volume resistivity in the thickness direction of the hard coat layer of 10 ⁸ Ω.
・ It is desirable not to exceed cm. If each of these values exceeds the upper limit, the antistatic effect becomes extremely poor.
In the antistatic colored hard coat film of the present invention, in order to enhance antistatic performance, the hard coat layer has a relatively high volume resistivity in the film surface direction, and a relatively high volume resistivity in the film thickness direction. It is desirable to use an anisotropic conductive layer that is as low as possible.

The antistatic colored hard coat film of the present invention is adhered to the surface of various displays, has excellent durability, and can prevent the occurrence of color unevenness such as colored glass.

In the colored anti-static hard coat film of the present invention, an anti-reflective colored hard coat film having an anti-reflective property in addition to the above-mentioned properties is provided by further providing an anti-reflective layer on the hard coat layer. be able to. When the antistatic colored hard coat film provided with the antireflection property is attached to various displays and the like, it is possible to prevent reflection of light from the outside and prevent deterioration of reading of visual information inside.

Further, the present invention provides an anti-fouling property in addition to the above-mentioned properties by further providing an anti-fouling layer on the anti-reflective layer of the anti-static colored hard coat film provided with the anti-reflective property. Further, an antistatic colored hard coat film can be obtained. When the antistatic colored hard coat film provided with the antifouling property is affixed to various displays and the like, it is possible to prevent the adhesion of dirt and the like and to prevent the visual information inside from being degraded.

The antistatic colored hard coat film of the present invention can have a light transmittance in the range of 40 to 80%, and is suitable for a display device such as a CRT.

When the colored layer is provided in the antistatic colored hard coat film of the present invention, it can be provided between the substrate film and the adhesive layer or between the substrate film and the transparent conductive layer. . The base material film may be colored by containing a coloring material, or the hard coating layer, the transparent conductive layer, or the adhesive layer may be colored by containing a coloring material.

The antistatic colored hard coat film of the present invention is difficult to achieve with a conventional glass display device by sticking to the outermost transparent substrate surface of the display device for use. A display device having a colored surface free from color unevenness and having scratch resistance can be obtained. The antistatic colored hard coat film of the present invention is particularly suitable for application to glass or the like having a non-uniform sticking thickness.

Therefore, the antistatic colored hard coat film of the present invention has a flat CRT in which the curvature is different between the phosphor surface side and the outer surface side of the CRT glass.
It is particularly suitable to be used by sticking to the surface of glass, particularly a flat CRT glass for a high definition display, or a flat CRT glass for a CRT of a high-definition television or the like.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the layer structure of Pattern 1 of an antistatic colored hard coat film of the present invention. FIG.
1 is a transparent base film. A transparent conductive layer 4 is formed on the transparent substrate film 1, and an anisotropic conductive hard coat layer 15 is formed on the transparent conductive layer 4. On the other hand, a coloring layer 2 containing a coloring material is formed on the surface of the transparent substrate film 1 opposite to the transparent conductive layer 4 and on the side to which the display is to be attached. Further has an adhesive layer 3 formed thereon.

FIG. 2 shows the layer structure of Pattern 2 of the antistatic colored hard coat film of the present invention. The antistatic colored hard coat film of FIG.
A coloring layer 2 containing a coloring material is formed thereon, a transparent conductive layer 4 is formed on the coloring layer 2, and a hard coat layer 5 is further formed thereon. On the other hand, an adhesive layer 3 is formed on the surface of the transparent substrate film 1 opposite to the colored layer 2 and on the side to which the display is attached.

FIG. 3 shows the layer configuration of Pattern 3 of the antistatic colored hard coat film of the present invention. The antistatic colored hard coat film of FIG. 3 is an example in which a colored transparent base film 21 containing a coloring material is used. A transparent conductive layer 4 is formed on the colored transparent base film 21,
Further, a hard coat layer 5 is formed thereon. On the other hand, the adhesive layer 3 is formed on the side of the colored transparent base film 21 opposite to the transparent conductive layer 4 and on the side to which the display is attached.

FIG. 4 shows the layer structure of Pattern 4 of the antistatic colored hard coat film of the present invention. The antistatic colored hard coat film in FIG. 4 is an example in which a coloring material is contained in the adhesive layer. In FIG. 4, a transparent conductive layer 4 is formed on a transparent substrate film 1, and a hard coat layer 5 is further formed thereon. On the other hand, the transparent substrate film 1
The colored adhesive layer 23 is formed on the side opposite to the transparent conductive layer 4 on the side where the display is attached.

FIG. 5 shows the layer structure of Pattern 5 of the antistatic colored hard coat film of the present invention. The antistatic colored hard coat film in FIG. 5 is an example in which a coloring material is contained in the conductive layer. In FIG. 5, the transparent substrate film 1
A colored conductive layer 24 containing a coloring material is formed thereon, and a hard coat layer 5 is further formed thereon. On the other hand, the adhesive layer 3 is formed on the surface of the transparent substrate film 1 opposite to the colored conductive layer 24 and on the side where the display is attached.

FIG. 6 shows the layer structure of Pattern 6 of the antistatic colored hard coat film of the present invention. In FIG. 6, a transparent conductive layer 4 is formed on a transparent substrate film 1, and a colored hard coat layer 25 containing a coloring material is further formed thereon. On the other hand, the adhesive layer 3 is formed on the surface of the transparent substrate film 1 opposite to the colored conductive layer 24 and on the side where the display is attached.

FIG. 7 shows the layer configuration of the pattern 7 of the antistatic colored hard coat film of the present invention, which is an example in which antireflection properties and antifouling properties are imparted. Note that FIG. 7 shows a middle refractive index layer 51, a high refractive index layer 52, and a low refractive index layer on the anisotropic conductive hard coat layer 15 of the antistatic colored hard coat film having the layer configuration of the pattern 1 in FIG. An antireflection layer 50 of 53 is provided, and an antifouling layer 6 is further provided on the antireflection layer 50. However, the anti-reflection layer 50
And / or the antifouling layer 6 is used not only for applying the pattern 1 to the antistatic colored hard coat film, but also for the patterns 2 to 3.
It can be provided on the hard coat layer of any of the antistatic colored hard coat films in Pattern 6.

Transparent base film The transparent base film of the present invention includes thermoplastic resins such as polyester, polyamide, polyimide, polypropylene, polymethylpentene, polyvinyl chloride, polyvinyl acetal, polymethyl methacrylate, polycarbonate and polyurethane. Can be used.

Coloring Layer The coloring layer is composed of a coloring agent such as a dye or a pigment and a binder resin. Various inorganic pigments, organic pigments and dyes usually used in the color material industry are used as the colorant used in the coloring layer. Organic pigments and dyes are preferred in terms of transparency, and organic pigments are more preferred in terms of light resistance and heat resistance.
It is also preferable to use a mixture of two or more colorants and adjusting the hue to match the light emission characteristics of the CRT. Examples of organic pigments include carbon black as a black pigment, phthalocyanine pigments and indanthrene blue pigments as blue pigments, quinacridone pigments, watching pigments, permanent pigments and anthraquinone pigments as red pigments. For example, carbon black is used as black, phthalocyanine-based pigment is used as blue, and quinacridone-based pigment is used as red, and the hue is adjusted according to the compounding ratio.

As the resin used for the colored layer, ionizing radiation curable resin, thermosetting resin, and thermoplastic resin can be used. A coloring material is adjusted so that the transmittance of the entire colored hard coat film is 40 to 80%, and the resultant is added to the resin to produce a colored layer resin composition. The method of applying the resin composition for a colored layer may be a roll coating, a gravure coat, a bar coat, an extrusion coat, or the like, to form a colored layer by a conventionally known method depending on the properties of the paint and the amount of coating. it can.

Instead of providing a colored layer, a material in which a coloring material is mixed in one or more of a transparent substrate film, a hard coat layer and an adhesive layer can be used.

Hard Coat Layer Examples of hard coat layer materials include ionizing radiation curable resins, thermosetting resins, thermoplastic resins, engineering plastics, and the like. Ionizing radiation-curable resins are preferred because film-forming operations can be easily performed on a plastic substrate film and the pencil hardness can be easily increased to a desired value.

The following are examples of ionizing radiation-curable resins that can be used in the hard coat layer. Preferred are those having an acrylate-based functional group, and more preferred are polyester acrylate and urethane acrylate. The polyester acrylate is composed of an oligomeric acrylate or methacrylate of a polyester-based polyol (hereinafter, acrylate and / or methacrylate is referred to as (meth) acrylate) or a mixture thereof. Further, the urethane acrylate is formed by acrylate-forming an oligomer comprising a polyol compound and a diisocyanate compound.

The monomers constituting acrylate are methyl (meth) acrylate, ethyl (meth) acrylate,
There are butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, methoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, phenyl (meth) acrylate and the like.

In order to further impart hardness to the coating film, a polyfunctional monomer can be used in combination. For example, trimethylolpropane tri (meth) acrylate, hexanediol (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate , 1,6 hexanediol di (meth) acrylate, neopentyl glycol di (meth)
Acrylate and the like.

Polyester oligomers include adipic acid and glycol (ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, butylene glycol, polybutylene glycol, etc.) and triol (glycerin, trimethylolpropane, etc.), and sebacic acid and glycol or triol. Polyadipate polyol and polysebacate polyol which are condensed products with acrylonitrile.

In addition, some or all of the aliphatic dicarboxylic acids can be substituted with other organic acids. For example,
Isophthalic acid, terephthalic acid, phthalic anhydride and the like can be used as components for imparting hardness.

The polyurethane oligomer can be obtained from a condensation product of a polyisocyanate and a polyol. For example, an adduct of methylene bis (p-phenylene diisocyanate), an adduct of hexamethylene diisocyanate / hexanetriol, an adduct of hexamethylene diisocyanate, tolylene diisocyanate, tolylene diisocyanate trimethylolpropane, 1,5-
Naphthylene diisocyanate, thiopropyl diisocyanate, ethylbenzene-2,4-diisocyanate,
Those selected from 2,4-tolylene diisocyanate dimer, hydrogenated xylylene diisocyanate, tris (4-phenyl isocyanate) thiophosphate, and the like;
It is obtained by the following reaction with a polyol.

Examples of polyols include polyether polyols such as polyoxytetramethylene glycol, polyester polyols such as polyadipate polyol and polycarbonate polyol, and copolymers of acrylic esters and hydroxyethyl methacrylate.

Further, when the above-mentioned ionizing radiation-curable resin is used as an ultraviolet-curable resin, acetophenones, benzophenones, Michler benzoyl benzoate, α-amyloxime ester, etc. Thioxanthones and n- as photosensitizers
Butylamine, triethylamine, tri-n-butylphosphine and the like are mixed and used.

Urethane acrylate is rich in elasticity and flexibility and excellent in workability (bendability), but cannot obtain a material having a poor surface hardness and a pencil hardness of 2H or more. On the other hand, polyester acrylate can impart hardness by selecting the constituent components of polyester.

In order to obtain a flexible hard coat film, when 40 to 10 parts by weight of polyester acrylate is blended with 60 to 90 parts by weight of urethane acrylate, a hard coat film having both high hardness and flexibility can be obtained. can get.

The coating liquid contains inorganic fine particles having a secondary particle diameter of 20 μm or less for the purpose of adjusting gloss and imparting surface slippage (not releasing property) to the resin component 10.
It is preferable to add 0.3 to 3 parts by weight to 0 part by weight. If the amount is less than 0.3 parts by weight, lubricity cannot be given,
If the amount is more than 3 parts by weight, the pencil hardness may decrease.

The inorganic fine particles include inorganic fine particles such as silica, magnesium carbonate, aluminum hydroxide and barium sulfate, and fine particles of an organic polymer such as polycarbonate, acrylic resin, polyimide, polyamide, polyethylene naphthalate and melamine resin. Can also be used.

The coating method of the hard coat layer may be a roll coating, a gravure coating, a bar coating, an extrusion coating, or the like, and may be performed by a conventionally known method according to the properties and coating amount of the coating to form the hard coating layer. Can be.

The hard coat film in the antistatic hard coat film of the present invention desirably has a volume resistivity in the thickness direction of 10 ⁸ Ω · cm or less. The hard coat film is made of an ultraviolet curable resin composition, and preferably has a thickness of 1 μm to 50 μm.

Transparent Conductive Layer The conductive fine particles which can be used in the transparent conductive coating film are antimony-doped indium tin oxide (hereinafter referred to as AT).
Described as O. ) And indium tin oxide (I
TO), organic compound fine particles surface-treated with gold and / or nickel, and the like.

In the antistatic hard coat film of the present invention, the resin composition constituting the transparent conductive coating film includes:
Oligomers or prepolymers such as (meth) acrylates of polyfunctional compounds such as alkyd resins and polyhydric alcohols (hereinafter, acrylate and methacrylate are referred to as (meth) acrylates) and reactive diluents Can be used.

Examples of the diluent include monofunctional monomers such as ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, vinyltoluene and N-vinylpyrrolidone, and polyfunctional monomers such as trimethylolpropane tri (meth) acrylate. , Hexanediol (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,6-hexanediol di (meth) ) Acrylate, neopentyl glycol di (meth)
Acrylate and the like.

The surface resistivity of the transparent conductive coating film in the antistatic hard coat film of the present invention is preferably 1
It does not exceed 0 ¹² Ω · cm. The thickness of the transparent conductive coating film formed by coating is 0.5 to 5 μm, preferably 1 to 5 μm.
μm (the coating amount in the present specification is described by weight; the same applies hereinafter). When the thickness is 0.5 μm or less, the surface resistivity of the conductive coating film formed on the transparent substrate film is 10 ¹²
Ω · cm or less, and if it is 5 μm or more, the transparency of the transparent conductive coating film may be lost.

[0049] The anisotropic conductive layer anisotropic conductive layer, a layer using the hard coat resin containing conductive particles, the particle diameter of the conductive fine particles, the coating thickness of the anisotropic conductive layer 1 It is desirable that the ratio be / 3 or more.

As the conductive fine particles used in the anisotropic conductive layer, particles whose surface has been treated with gold and / or nickel can be used. Such particles before the surface treatment can be selected from the group consisting of silica, carbon black, metal particles and resin particles, and the anisotropic conductive layer in the present invention is referred to as a volume resistivity in the film surface direction ( P _VH ) and the volume resistivity (P _VV ) in the film thickness direction satisfy the following relationship. P _VH ≧ 10 × P _VV

In the antistatic hard coat film of the present invention, when the hard coat film is made to be anisotropically conductive, a scratch resistant film is formed on the conductive layer using the ultraviolet curable resin composition as a binder. It is formed by applying a resin composition having a high hardness and a property that does not extremely impair the conductivity. As the ultraviolet-curable resin composition used for the anisotropic conductive hard coat film, an ultraviolet-curable resin composition that firmly adheres to the above-mentioned conductive layer can be used.

[0052] To form the adhesive layer adhesive layer, any conventionally known adhesives, may be used an adhesive, preferably a thermoplastic elastomer having a low viscosity resin and rubber elasticity having a glass transition temperature It is good to use what consists of a mixture with wax.

An acrylic resin or a silicone resin is generally used as the adhesive resin having a low glass transition temperature. Examples of the thermoplastic elastomer having rubber elasticity include ethylene-vinyl acetate copolymer, butadiene rubber, and styrene-butadiene. Rubber, nitrile rubber, nitrile-butadiene rubber, high styrene rubber, synthetic rubber such as acrylic rubber, natural rubber and the like can be mentioned.

Antireflection layer A general antireflection film can be used as the antireflection layer. The anti-reflection layer is formed on the surface of the hard coat layer by
And a method of forming a film as described above. A method of using an extremely thin film of MgF ₂ or the like having a thickness of about 0.1 μm as an antireflection layer. A method of forming a metal deposition film to form an antireflection layer. A method in which a low-refractive-index layer made of a material having a refractive index of light lower than that of the hard coat layer is provided to form an antireflection layer. A method in which a high refractive index layer is in contact with a hard coat layer, and a low refractive index layer is provided thereon to form an antireflection layer. For example, an ultrafine particle layer of a metal oxide having a high refractive index may be unevenly distributed in a portion of the antireflection layer in contact with the hard coat layer. A method in which the above layer configuration is repeatedly laminated and provided to form an antireflection layer. A method in which a middle refractive index layer, a high refractive index layer, and a low refractive index layer are provided to form an antireflection layer.

The antireflection layer capable of more effectively preventing reflection is formed of an anisotropic conductive hardcoat layer on a transparent substrate film as shown in the antistatic colored hardcoat film of FIG. 15, through the middle refractive index layer 51,
The antireflection layer 50 is formed in the order of the high refractive index layer 52 and the low refractive index layer 53.

More preferably, the low-refractive-index layer 53 composed of a SiO _X layer, the middle-refractive-index layer 51 and the antireflection layer 50 composed of the high-refractive-index layer 52 satisfy the following expression: 2.20> high-refractive-index layer The refractive index of the medium refractive index layer> the refractive index of the medium refractive index layer> the refractive index of the low refractive index layer> 1.40, and the low refractive index layer is 80 to 110.
nm, the high-refractive-index layer has a thickness of 30 to 110 nm, and the middle-refractive-index layer has a thickness of each refractive index of 50 to 100 nm, and has an optical thickness D (D = n ·
d, where n is the refractive index of the middle refractive index layer, and d is the thickness of the middle refractive index layer.

Antifouling layer For the antifouling layer, a fluorine-based or silicone-based resin generally used as a water-repellent paint can be used. For example, when the low refractive index layer of the antireflection layer is formed of SiO ₂ , a fluorosilicate-based water-repellent paint is preferably used.

Method of Curing the Coating Film The coating film of each layer may be cured for each layer or may be cured simultaneously. When the ultraviolet absorbing resin composition is used for each of the two or more layers, the following curing method can be used to effectively cure the coating film.

When the coating film of the ultraviolet-curable resin composition other than the outermost layer is in a half-cured state and is irradiated with ultraviolet light to simultaneously cure each coating film, light that responds to the wavelength characteristics of the ultraviolet light source used for ultraviolet irradiation. Select and use a curing initiator,
When a photo-curing initiator having a different peak in the absorption wavelength region is mixed into each of the plurality of coating layers of the ultraviolet-curable resin composition, the coating of each layer can be effectively cured. That is, a cured coating film in which the adhesiveness between the base material and each coating film of a plurality of layers is improved by effectively utilizing the selective wavelength that is easily reached for each layer by the wavelength range of the irradiation spectrum of the ultraviolet light source. Can be.

The release film adhesive layer may be covered with a release film (also referred to as a separate film) if necessary. As the release film, any ordinary paper material, silicon release paper, plastic film, or silicon release film can be used without particular limitation.

Display Apparatus The antistatic colored hard coat film obtained as described above is formed so that the curvature of the surface of various display apparatuses, for example, the phosphor surface side and the outer surface side of CRT glass are different. It can be attached to the surface of a flat CRT glass, particularly a flat CRT glass for a high-definition display, or a flat CRT glass for a CRT such as a high-definition television, to prevent the occurrence of color unevenness such as colored glass. Can be.

[0062]

[Example 1] A polyethylene terephthalate film having a thickness of 188 µm and having a single-sided and easy-adhesion treatment (abbreviation: PET)
A film) (trade name: A4150, manufactured by Toyobo Co., Ltd.) coated with a color coating agent having a composition shown in Table 1 below by a roll coating method so as to have a dry thickness of about 10 μm, And after drying, 175 kv of electron beam,
Irradiation with 5 Mrad yielded a colored layer-formed PET film.

[0063]

[Table 1]

A transparent conductive coating agent (trade name: Syntron C-4456-S7, manufactured by Shinto Paint Co., Ltd.) having a dry thickness of about 1 was applied on the opposite side of the colored layer-forming PET film from the colored layer side.
After coating by a roll coating method so as to have a thickness of μm, drying was performed, and irradiation with 75 mJ / m ² was performed using a UV irradiation device to form a transparent conductive coating film. A hard coat agent (trade name:
0.1 parts by weight of melamine resin particles (trade name: Bright GNR4, 6-EH, manufactured by Nippon Chemical Industrial Co., Ltd.) having an average particle size of about 5 μm and surface-treated with gold and nickel are added to PETD-31 (manufactured by Dainichi Seika). About 6μm dry thickness
After coating with a roll coat method and drying,
Irradiation was performed at 270 mJ / m ² with a V irradiation device to form an anisotropic conductive hard coat film having antistatic properties. Next, an adhesive having a dry thickness of about 20 μm was applied on the colored layer surface by a roll coating method, and a silicone-treated PET film having a thickness of 50 μm was attached as a release film (separator film), and is shown in FIG. The antistatic colored hard coat film of Example 1 having a layer structure was obtained, and the light transmittance of the film was 60% at a wavelength of 550 nm in terms of spectral transmittance.

[Example 2] A polyethylene terephthalate film (abbreviation: PE) having a thickness of 188 μm and having a single-sided surface and easy adhesion.
T film) (trade name: A4150, manufactured by Toyobo Co., Ltd.) is coated with the colored coating agent used in Example 1 to a thickness of about 10 μm so that the dry thickness becomes about 10 μm.
m, applied by a roll coat method, dried and then irradiated with 1 electron beam.
Irradiation at 75 kv and 5 Mrad yielded a colored layer-formed PET film.

On the colored surface of the colored layer forming PET film,
A transparent conductive coating film was formed in the same manner as in Example 1.
On the transparent conductive coating film, a hard coat agent (trade name: PE
TD-31, manufactured by Dainichi Seika Co., Ltd.) was applied by a roll coating method so as to have a dry thickness of about 6 μm, dried, and then irradiated with an electron beam at 175 kv and 10 Mrad to form a hard coat film.

Next, an adhesive having a dry thickness of about 20 μm was applied to the surface opposite to the hard coat surface by a roll coating method, and a silicone-treated PET film having a thickness of 50 μm was bonded as a release film (separator film). The antistatic colored hard coat film of Example 2 having the layer configuration shown in FIG. 2 was obtained, and the light transmittance of the film was 60% at a wavelength of 550 nm in terms of spectral transmittance.

Example 3 Thickness 188 dyed with a dye
A transparent conductive layer, a hard coat layer, and a pressure-sensitive adhesive layer were formed in the same manner as in Example 2 except that a polyethylene terephthalate film having a single-sided surface treatment of μm was used. An antistatic colored hard coat film was obtained. Regarding the light transmittance of the obtained antistatic colored hard coat film, the transmittance at a wavelength of 550 nm in spectral transmittance was 60%.

Example 4 A transparent conductive layer and a hard coat layer were formed in the same manner as in Example 2 on the easy-adhesion treated surface of a 188 μm-thick single-sided easily treated polyethylene terephthalate film. Next, an adhesive layer was formed on the surface opposite to the surface of the hard coat layer in the same manner as in Example 1 using a colored adhesive having the composition shown in Table 2 below. An anti-coloring hard coat film was obtained. Regarding the light transmittance of the obtained antistatic colored hard coat film, the transmittance at a wavelength of 550 nm in spectral transmittance was 60%.

[0070]

[Table 2]

[Example 5] A polyethylene terephthalate film (abbreviation: PE) having a thickness of 188 µm and having a single-sided surface and easy adhesion.
T film) (trade name: A4150, manufactured by Toyobo Co., Ltd.) is coated with a colored conductive coating agent having a composition shown in Table 3 below by a roll coating method so as to have a thickness of about 1 μm. After drying, the film was irradiated with a UV irradiation device at 75 mJ / m ² to form a transparent conductive coating film, except that the antistatic coloring of Example 5 having the layer structure shown in FIG. A hard coat film was obtained. Regarding the light transmittance of the obtained antistatic colored hard coat film, the transmittance at a wavelength of 550 nm in spectral transmittance was 60%.

[0072]

[Table 3]

[Example 6] A polyethylene terephthalate film having a thickness of 188 µm and having a single-sided and easy-adhesion treatment (abbreviation: PE
T film) (trade name: A4150, manufactured by Toyobo Co., Ltd.), a transparent conductive layer was formed in the same manner as in Example 1 above, and a colored hard coat agent having the composition shown in Table 4 below was formed thereon Is applied by a roll coating method so as to have a thickness of about 20 μm, and after drying, an electron beam is applied at 185 kV and 10 Mra.
Irradiated to form a colored hard coat film. An adhesive layer was formed on the surface opposite to the colored hard coat film in the same manner as in Example 1 to obtain an antistatic colored hard coat film of Example 6 having a layer configuration shown in FIG. Regarding the light transmittance of the obtained antistatic colored hard coat film, the transmittance at a wavelength of 550 nm in spectral transmittance was 60%.

[0074]

[Table 4]

[Example 7] A film having a thickness of 50
μm biaxially oriented polyethylene terephthalate film
(Toray Industries product name: Lumirror T-60 50)
On one side, ZrO _TwoFine particle coating liquid No. 12
75 [trade name, manufactured by Sumitomo Osaka Cement Co., Ltd., ZrO_TwoFine
Binder (ionizing radiation curing type)
Organosilicon compound) a coating solution comprising 0.3 parts by weight]
Only 57 nm (shows the thickness when dried, the same applies hereinafter)
The uncured medium refractive index layer (refractive index: 1.74)
Coated with a bar.

On the other hand, a transparent conductive coating film was formed on the surface of the PET film provided with the coloring layer in the same manner as in Example 1 on the side opposite to the coloring layer in the same manner as in Example 1. A melamine resin particle (trade name: Bright GNR4, 6-EH, manufactured by Nippon Chemical Industry Co., Ltd.) having an average particle size of about 5 μm obtained by surface-treating a hard coat agent (trade name: PETD-31) with gold and nickel was further added. About 6μ thickness of coating agent added by 1 part by weight
m, and the solvent component was dried to form an uncured anisotropic conductive hard coat layer.

Next, the uncured medium refractive index layer provided on the shaping film and the uncured anisotropic conductive hard coat layer provided on the colored PET film were laminated and pressed so as to be in contact with each other. Irradiation of ultraviolet rays at 480 mJ / m cures the uncured middle refractive index layer and the anisotropic conductive hard coat layer to form the middle refractive index layer and the anisotropic conductive hard coat layer, and peels off the molding film did.

Further, ITO sputtering (refractive index: 2.0, degree of vacuum: 5 × 10 ⁻⁶⁾ was applied to the medium refractive index layer side.
torr, substrate temperature is room temperature, argon is 100 scc /
min, oxygen was introduced at 5 scc / min), and the deposition rate was 1.6 Å / s at 105 nm to form a high refractive index layer. Next, SiO ₂ (refractive index: 1.46) was further deposited on the high refractive index layer, the degree of vacuum was 5 × 10 ⁻⁶ torr, the substrate temperature was room temperature, and the deposition rate was 2 μm.
A low-refractive-index layer was formed by vapor deposition at 6 Å / s at 85 nm. On the low refractive index layer, a fluorine surfactant FC-722 (trade name, manufactured by 3M) was further applied with a wire bar to a thickness of 2 nm to form an antifouling layer.

On the other hand, a dry thickness of about 20 μm
Was applied by a roll coating method, and a silicone treatment having a thickness of 50 μm was applied. As a result, an antireflection antistatic colored hard coat film having the antifouling property having the layer structure shown in FIG. 7 was obtained. The light transmittance of the film was a spectral transmittance, and the transmittance at a wavelength of 550 nm was 62%. there were.

[0080]

The antistatic colored hard coat film of the present invention has excellent durability and can be applied to the surface of various display devices so that, for example, the curvature of the CRT glass on the phosphor surface side is different from that on the outer surface side. Planar CR as it forms
By affixing to the surface of T glass, particularly flat CRT glass for high-definition displays and flat CRT glass for CRTs of high-definition televisions, it is possible to prevent the occurrence of color unevenness as seen in colored glass. it can.

The antistatic colored hard coat film of the present invention has excellent transparency in addition to the above effects.
When applied to the surface of a display device, the visibility of the display device surface is high.

[Brief description of the drawings]

FIG. 1 shows a layer configuration of Pattern 1 of an antistatic colored hard coat film of the present invention.

FIG. 2 shows the layer configuration of Pattern 2 of the antistatic colored hard coat film of the present invention.

FIG. 3 shows a layer configuration of Pattern 3 of an antistatic colored hard coat film of the present invention, and shows an antistatic colored hard coat film using a transparent base film to which a coloring material is added.

FIG. 4 shows the layer configuration of Pattern 4 of the antistatic colored hard coat film of the present invention, and shows an antistatic colored hard coat film using a coloring material added to an adhesive layer.

FIG. 5 shows a layer configuration of Pattern 5 of the antistatic colored hard coat film of the present invention, and shows an antistatic colored hard coat film in which a coloring material is added to a conductive layer.

FIG. 6 shows a layer configuration of Pattern 6 of the antistatic colored hard coat film of the present invention, and shows an antistatic colored hard coat film in which a coloring material is added to the hard coat layer.

FIG. 7 shows the layer configuration of Pattern 7 of the antistatic colored hard coat film of the present invention, and shows an antistatic colored hard coat film provided with antireflection properties and antifouling properties.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transparent base film 2 colored layer 3 adhesive layer 4 transparent conductive layer 5 hard coat layer 6 antifouling layer 15 anisotropic conductive hard coat layer 21 colored transparent base film 23 colored adhesive layer 24 colored conductive layer 25 colored hard Coating layer 50 Antireflection layer 51 Medium refractive index layer 52 High refractive index layer 53 Low refractive index layer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Mitsuru Tsuchiya 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. 4D075 AC22 AC23 AC25 CA22 CB06 DA04 DB31 DC21 EA17 EA19 EA21 EC01 EC11 4F100 AA20C AA37A AA37C AB01C AB16C AB25C AK01C AK04A AK25A AK36C AK41E AK42A AR00A AR00B AR00C AS00E BA05 BA07 BA10C BA10E BA22C CA13A CA13D DE01C EJ54BJJGJ JGJ JG

Claims (16)

[Claims] 1. A transparent substrate film, comprising: a transparent conductive layer provided on one surface of the transparent substrate film; and a hard coat layer provided on the transparent conductive layer; An adhesive layer provided on the other surface of the transparent substrate film, and an antistatic colored hard coat film including a release film provided on the adhesive layer, wherein a colored layer is provided between any of the layers. Or an antistatic colored hard coat film, characterized in that the layer has a coloring material. 2. The transparent conductive layer has a surface resistivity of 10
The antistatic colored hard coat film according to claim 1, which does not exceed ¹² Ω · cm. 3. The antistatic colored hard coat film according to claim 1, wherein the volume resistivity of the hard coat layer in the thickness direction does not exceed 10 ⁸ Ω · cm. 4. The hard coat layer comprises an anisotropic conductive layer having a relatively high volume resistivity in a film surface direction and a relatively low volume resistivity in a film thickness direction. Antistatic colored hard coat film. 5. The anisotropic conductive layer is made of a hard coat resin containing conductive fine particles, and the particle diameter of the conductive fine particles is one third or more of the coating thickness of the anisotropic conductive layer. The colored hard coat film having antistatic properties according to claim 4. 6. The antistatic colored hard coat film according to claim 5, wherein the conductive fine particles comprise particles surface-treated with gold and / or nickel. 7. The method according to claim 1, wherein the particles are selected from the group consisting of silica, carbon black, metal particles, and resin particles.
The antistatic colored hard coat film according to claim 6. 8. A volume resistivity (P) in a film surface direction._VH) And film thickness
Volume resistivity (P _VV) Satisfies the following relationship:
Item 6. An antistatic colored hard coat film according to item 4. P_VH≧ 10 × P_VV 9. The antistatic colored hard coat film according to claim 1, further comprising an antireflection layer on the hard coat layer. 10. The antistatic colored hard coat film according to claim 1, further comprising an antifouling layer on the antireflection layer. 11. The antistatic colored hard coat film according to claim 1, wherein the light transmittance is 40 to 80%. 12. The method according to claim 1, further comprising a coloring layer between the transparent substrate film and the adhesive layer.
The antistatic colored hard coat film according to 7, 8, 9, 10 or 11. 13. The method according to claim 1, further comprising a coloring layer between the transparent base film and the hard coat layer.
13. The antistatic colored hard coat film according to 5, 6, 7, 8, 9, 10, 11 or 12. 14. The method according to claim 1, wherein the transparent base material film contains a coloring material.
14. The antistatic colored hard coat film according to 1, 12, or 13. 15. The method according to claim 1, wherein the hard coat layer or the transparent conductive layer contains a coloring material.
The antistatic colored hard coat film according to 9, 10, 11, 12, 13 or 14. 16. The method according to claim 1,2,3,4,
A display device comprising the antistatic colored hard coat film according to any one of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15.