JP2005209431A - Transparent conductive laminate and transparent touch panel using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent conductive laminate as for a movable electrode substrate of a transparent touch panel reducing flicker on a high brilliance display screen while reducing an interference pattern in which a transparent organic high polymer substrate has. <P>SOLUTION: The transparent conductive laminate successively laminates a clear hard coat layer having no substantially unevenness on one side of a transparent organic high polymer substrate, and a curing resin layer and a transparent conductive film layer having unevenness on the substrate of the reverse face to the hard coat layer. The curing resin layer comprises a curing resin component, and ultra-fine particles A comprising metal oxide of average primary particle diameter of 100 nm or less and/or metal fluoride. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transparent conductive laminate having a transparent conductive film layer on a transparent organic polymer substrate. More specifically, in the present invention, a clear hard coat layer substantially free of irregularities is laminated on one side of a transparent organic polymer substrate, and a cured resin layer-1 having irregularities on the opposite side of the hard coat layer, transparent conductive The present invention relates to a transparent conductive laminate suitable for a movable electrode substrate of a transparent touch panel, in which film layers are sequentially laminated.

  In recent years, a transparent touch panel that realizes an interactive input method is often used as one of man-machine interfaces. The transparent touch panel includes an optical method, an ultrasonic method, a capacitance method, a resistance film method, and the like depending on the position detection method. Among these, the resistive film method has been rapidly spread in recent years because of its simple structure and good price / performance ratio.

  A resistance film type transparent touch panel is an electrical component configured by holding two transparent electrode substrates having a transparent conductive layer at a constant interval so that the transparent conductive layer faces each other. The movable electrode substrate is pressed from a transparent electrode substrate (movable electrode substrate) provided on the viewing side with a pen or a finger and is bent to bring the movable electrode substrate into contact with the other transparent electrode substrate (fixed electrode substrate). When the substrate and the fixed electrode substrate are brought into conduction, the detection circuit detects the position and a predetermined input is made.

  By the way, when the movable electrode substrate which comprises a transparent touch panel is formed only by the clear cured resin layer, the interference pattern derived from a transparent organic polymer substrate is observed in a movable electrode substrate, and the appearance as a transparent touch panel worsens. There's a problem.

  Conventionally, a cured resin layer having an uneven shape is provided on the surface of the transparent conductive laminate on which the transparent conductive layer is formed, and an interference pattern (Newton ring) generated between the movable electrode substrate and the fixed electrode substrate constituting the transparent touch panel is provided. Methods of suppressing are known (see, for example, Patent Document 1 and Patent Document 2).

  However, these methods do not form irregularities on the surface of the cured resin layer for the purpose of reducing the interference pattern derived from the transparent organic polymer substrate, and the flicker on the high-definition display body is large. There has been a problem that the visibility of the high-definition display body is significantly deteriorated.

  In addition, in order to improve the keying life by suppressing the Newton ring in the transparent touch panel and improving the sticking property in the same manner as described above, it is also proposed to define the uneven surface roughness on the transparent conductive layer side. (For example, Patent Document 3 and Patent Document 4).

  However, none of them forms irregularities in the cured resin layer for the purpose of reducing the interference pattern derived from the transparent organic polymer substrate, and the high-definition display body is similar to the above in the range of the surface roughness described. It is difficult to reduce the above flicker.

  Further, a method has been proposed in which fine substances of 10 μm to 50 μm are arranged with a certain interval to maintain the transparency of the clear coat plate while preventing the occurrence of interference fringes in the clear coat plate alone. However, this method can prevent the interference pattern derived from the transparent organic polymer substrate, but cannot simultaneously prevent flickering on the high-definition display body. was there.

  Furthermore, it is characterized by containing a compound or its oligomer that can be polymerized by irradiating with an activation energy ray, a thermoplastic resin, and inorganic fine particles having an average primary particle diameter of 0.001 μm or more and less than 1 μm. A method using an anti-glare film-forming coating is also proposed (see Patent Document 6). It is an example in which irregularities on the film surface are formed without using fine particles of several microns, including secondary particles, so that anti-glare properties are exhibited by adopting such a configuration. It does not suppress the flicker of pixels when applied to a fine display.

Japanese Patent Laid-Open No. 10-323931 JP 2002-373056 A Japanese Patent No. 3214575 No. 08-002896 JP 2000-193806 A JP 2002-275391 A

  The object of the present invention is to reduce the interference pattern of the transparent organic polymer substrate by providing a cured resin layer having irregularities on the surface on which the transparent conductive layer is formed, and also to reduce the flicker on the high-definition display screen. An object of the present invention is to provide a transparent conductive laminate for a movable electrode substrate of a transparent touch panel.

  As a method of reducing the interference pattern derived from the transparent organic polymer substrate, the present inventors have made extensive studies in view of the above-described conventional technology, and a cured resin layer having irregularities on the surface on which the transparent conductive layer is formed. The interference pattern derived from the transparent organic polymer substrate can be reduced by providing the transparent resin substrate, and even a cured resin layer having unevenness by controlling the formation method and surface roughness of the unevenness can be applied to the transparent organic polymer substrate. It has been found that it is possible to reduce the interference pattern derived from it and to further suppress flickering on the high-definition display body while suppressing the increase in haze and maintaining the transparency of the transparent conductive laminate.

  In order to solve the above-mentioned problems, the inventors of the present invention have focused on a method using ultrafine particles among the roughening techniques, and as a result of repeated studies, the conventional average particle size of several microns has been conventionally used. Substantially, such as fine particles, a system in which nano-sized ultrafine particles are added to a few micron particles, or a system that uses nano-sized ultrafine particles and uses secondary aggregate particles that are substantially several microns in size. Unlike the state in which micron-sized particles are dispersed, the average primary particle size is composed of ultrafine particles having a size of 100 nm or less, and the ultrafine particles are dispersed in the cured resin layer as aggregates having a size of less than 1.0 μm. Succeeded in forming.

  And surprisingly, in a transparent touch panel using a transparent conductive laminate in which the addition amount and film thickness of ultrafine particles in a cured resin layer having irregularities formed by the above method are controlled, a transparent organic polymer substrate is used. The inventors have found that it is difficult to cause color separation (flickering) of pixels on a high-definition display body while suppressing the derived interference pattern, and the present invention has been completed.

That is, the object of the present invention is achieved by the following.
In the first invention, a clear hard coat layer having no substantial irregularities is laminated on one side of a transparent organic polymer substrate, and a cured resin layer-1 having irregularities on the opposite side of the hard coat layer and a transparent conductive layer. A transparent conductive laminate in which film layers are sequentially laminated, and the cured resin layer-1 is made of ultrafine particles A composed of a cured resin component and a metal oxide and / or metal fluoride having an average primary particle size of 100 nm or less. (1) Ultrafine particles A are contained in a proportion of 5 parts by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the cured resin component, and (2) and the ultrafine particles A form an aggregate of less than 1.0 μm. (3) The film thickness of the cured resin layer-1 is 1 μm or more and 10 μm or less, and (4) the ten-point average roughness (Rz) defined by JIS B0601 of the cured resin layer-1 is 100 nm or more and less than 500 nm, average arithmetic roughness ( a) is 10 nm or more and less than 50 nm, and (5) haze defined by JIS B7136 when cured resin layer-1 having irregularities is laminated on a transparent organic polymer substrate is 1% or more and less than 5% It is a transparent conductive laminated body characterized by being.

In the second invention, the ultrafine particles A are Al ₂ O ₃ , Bi ₂ O ₃ , CeO ₂ , In ₂ O ₃ , (In ₂ O ₃ .SnO ₂ ), HfO ₂ , La ₂ O ₃ , MgF _2. , Sb ₂ O ₅ , (Sb ₂ O ₅ .SnO ₂ ), SiO ₂ , SnO ₂ , TiO ₂ , Y ₂ O ₃ , ZnO and ZrO _2, at least one metal oxide and / or metal 1 is a transparent conductive laminate according to a first aspect of the present invention made of a fluoride.

  The third invention has a cured resin layer-2 having a refractive index of 1.20 to 1.55 and a film thickness of 0.05 to 0.5 μm between the cured resin layer-1 and the transparent conductive film layer. The transparent conductive laminate of the first or second invention.

  The fourth invention has an optical interference layer comprising at least one low refractive index layer and at least one high refractive index layer between the cured resin layer-1 and the transparent conductive film layer. Is the transparent conductive laminate of the first or second invention, in contact with the transparent conductive film layer.

  According to a fifth invention, the transparent conductive film layer is a crystalline film mainly composed of indium oxide, and the thickness of the transparent conductive film layer is 5 to 50 nm. It is a transparent conductive laminate.

  According to a sixth aspect of the present invention, there is provided a transparent touch panel in which two transparent electrode substrates each provided with a transparent conductive layer on at least one side are arranged so that the transparent conductive layers face each other. A transparent touch panel using the transparent conductive laminate of any of the first to fifth inventions as a substrate.

  In a transparent touch panel using the transparent conductive laminate of the present invention as a movable electrode substrate, pixel color separation (flicker) can be achieved even when applied to a high-definition display while reducing the interference pattern derived from the transparent organic polymer substrate. Since it is difficult to generate, it can be applied as a completely new touch panel substrate having optical characteristics with improved visibility.

Hereinafter, the present invention will be described in detail.
First, the cured resin layer-1 having unevenness, the transparent organic polymer substrate, the transparent conductive film layer, the clear hard coat layer having substantially no unevenness, and the book constituting the transparent conductive laminate of the present invention, Each of the cured resin layer-2 and the optical interference layer that can be provided in the transparent conductive laminate of the invention will be described.

Hardened resin layer-1 having irregularities
The cured resin layer-1 having unevenness used in the present invention is composed of a cured resin component and ultrafine particles A made of a metal oxide or metal fluoride having an average primary particle size of 100 nm or less, and the curable resin component includes ionizing radiation. Examples thereof include curable resins and thermosetting resins.

  Monomers and polyfunctional acrylates such as polyol acrylates, polyester acrylates, urethane acrylates, epoxy acrylates, modified styrene acrylates, melamine acrylates, and silicon-containing acrylates that provide a hard layer other than those described above are examples of monomers that provide ionizing radiation curable resins. Can be mentioned.

  Specific monomers include, for example, trimethylol propane trimethacrylate, trimethylol polopan ethylene oxide modified triacrylate, trimethylol polopan propylene oxide modified triacrylate, isocyanuric acid ethylene oxide modified triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate. And polyfunctional monomers such as dimethylol tricyclodecane diacrylate, tripropylene glycol triacrylate, diethylene glycol diacrylate, 1,6-hexanediol diacrylate, epoxy-modified acrylate, urethane-modified acrylate, and epoxy-modified acrylate.

  These may be used singly or in combination of several kinds, and in some cases, an appropriate amount of hydrolyzate of various alkoxysilanes may be added. When the resin layer is polymerized by ionizing radiation, an appropriate amount of a known photopolymerization initiator is added. Further, an appropriate amount of a photosensitizer may be added as necessary.

  Examples of the photopolymerization initiator include acetophenone, benzophenone, benzoin, benzoylbenzoate, and thioxanthone. Examples of the photosensitizer include triethylamine and tri-n-butylphosphine.

  Thermosetting resins include organosilane thermosetting resins using silane compounds such as methyltriethoxysilane and phenyltriethoxysilane as monomers, melamine thermosetting resins using etherified methylol melamine and the like, and isocyanates. System thermosetting resin, phenol type thermosetting resin, epoxy curable resin and the like. These curable resins may be used alone or in combination. Moreover, it is also possible to mix a thermoplastic resin as needed. When the resin layer is crosslinked by heat, an appropriate amount of a known reaction accelerator or curing agent is added.

  Examples of the reaction accelerator include triethylenediamine, dibutyltin dilaurate, benzylmethylamine, pyridine and the like. Examples of the curing agent include methylhexahydrophthalic anhydride, 4,4′-diaminodiphenylmethane, 4,4′-diamino-3,3′-diethyldiphenylmethane, diaminodiphenylsulfone, and the like.

The ultrafine particles A having an average primary particle diameter of 100 nm or less can be used without particular limitation. For example, Al ₂ O ₃ , Bi ₂ O ₃ , CeO ₂ , In ₂ O ₃ , (In ₂ O ₃ .SnO _2). ), HfO ₂ , La ₂ O ₃ , MgF ₂ , Sb ₂ O ₅ , (Sb ₂ O ₅ .SnO ₂ ), SiO ₂ , SnO ₂ , TiO ₂ , Y ₂ O ₃ , ZnO, ZrO _2, etc. The thing which consists of a thing and / or a metal fluoride can be mentioned. These may be used alone or in combination of two or more. Moreover, a metal oxide and a metal fluoride can be used simultaneously.

  The average primary particle diameter of the ultrafine particles A is desirably smaller and preferably 100 nm or less because the cured resin layer does not cause whitening due to internal haze. The average primary particle diameter of the ultrafine particles A is preferably 80 nm or less, more preferably 60 nm or less. There is no particular lower limit, but it is usually up to about 5 nm.

  Here, the average primary particle diameter of the ultrafine particles A can be measured using a laser diffraction / scattering particle size distribution measuring apparatus. In order to easily measure the particle size, the actual size can be measured by using a transmission electron microscope or the like. Specifically, a cured resin layer containing ultrafine particles is embedded with an epoxy resin or the like, the epoxy resin layer is completely cured, and then sliced with a microtome to prepare a measurement sample. Furthermore, this measurement sample is observed with a transmission electron microscope, the size of the ultrafine particles is randomly measured at 10 or more points, and the average primary particle diameter can be obtained by averaging these measured values.

  The content of the ultrafine particles A dispersed in the cured resin layer-1 is 5 parts by weight or more and 50 parts by weight or less, preferably 7.5 parts by weight with respect to 100 parts by weight of the cured resin component. It is not less than 40 parts by weight and more preferably not less than 10 parts by weight and not more than 30 parts by weight. When the ultrafine particle A component is less than 5 parts by weight, it is difficult to form a concavo-convex shape, and when it exceeds 50 parts by weight, it is possible to form a concavo-convex shape, but the haze increases, and the transparent touch panel It is not suitable for use as.

  In the present invention, the ultrafine particles A form and disperse aggregates (secondary aggregated particles) having an apparent diameter of less than 1.0 μm in the cured resin layer-1. The size of the ultrafine particle aggregate can be observed with a transmission electron microscope by the method described above.

  It is possible to form a cured resin layer having irregularities even if the aggregate size of the ultrafine particles A is 1.0 μm or more, but if it is less than 1.0, the ultrafine particles A can easily be thixotropic. It is not suitable because it develops and the processability decreases. Moreover, when the ultrafine particles A do not form aggregates and are uniformly dispersed in the cured resin layer, it is impossible to form irregularities on the surface of the cured resin layer-1.

  The film thickness of the concavo-convex cured resin layer-1 is 1 μm or more and 10 μm or less, preferably 1.5 μm or more and 7 μm or less, more preferably 2 μm or more and 5 μm or less. When the film thickness is less than 1 μm, it is not appropriate because it becomes difficult to form the uneven shape. Further, when the film thickness exceeds 10 μm, there is no serious problem in characteristics, but it is not appropriate because processing becomes difficult.

  In this invention, since the uneven | corrugated surface formed in the cured resin layer-1 changes an uneven | corrugated shape also by controlling the film thickness of this cured resin layer, it is very important to control a film thickness. . Particularly in the case of the present invention, when only the film thickness is changed with a certain amount of the ultrafine particle component contained in the cured resin component, the surface tends to flatten as the film thickness decreases, and conversely the film thickness As the thickness increases, the surface tends to become rough.

  In the present invention, the cured resin layer-1 having irregularities has a ten-point average roughness (Rz) defined by JIS B0601 of 100 nm or more and less than 500 nm, preferably 100 nm or more and less than 400 nm, more preferably 100 nm. It is 300 nm or less.

  Here, when the 10-point average roughness is less than (Rz) 100 nm, the interference pattern derived from the polymer substrate cannot be reduced, and the 10-point average roughness is (Rz) 500 nm or more. In such a case, if the haze becomes large and is adapted to a high-definition display body, it is not preferable because of color separation of pixels and flickering.

  The cured resin layer-1 having irregularities has an average arithmetic roughness (Ra) defined by JIS B0601 of 10 nm or more and less than 50 nm, preferably 10 nm or more and 40 nm or less, and more preferably 10 nm or more and less than 35 nm. It is. When the average arithmetic roughness (Ra) is less than 10 nm, the interference pattern derived from the polymer substrate cannot be reduced. On the other hand, when the ten-point average roughness is (Rz) of 500 nm or more, haze increases, and when applied to a high-definition display, it is not preferable because of color separation of pixels and flickering. .

  In the present invention, the haze defined by JIS B7136 when the cured resin layer-1 having irregularities is laminated on the transparent organic polymer substrate is 1% or more and less than 5%, preferably 1% or more. It is less than 4%, more preferably 1.5% or more and less than 3.5%.

  If the haze is less than 1%, the interference pattern derived from the polymer substrate cannot be reduced, and even if the haze is 5% or more, pixel color separation occurs on the high-definition display. If the flicker does not occur, there is no problem in characteristics, but it is not preferable because the haze of the transparent touch panel becomes large.

  As a method for forming a cured resin layer having unevenness in the present invention, formation by a wet method is particularly suitable. In that case, for example, any known method such as a doctor knife, a bar coater, a gravure roll coater, a curtain coater, a knife coater, a spin coater, a spray method, a dipping method, or the like can be used.

  Specifically, for example, a predetermined amount of ultrafine particles A dispersed in a dispersion liquid is added to a curable resin, a reaction initiator is further added, and a solvent is added for dilution or the like as necessary. Next, this solution composition is applied to the surface of the transparent organic polymer substrate using the method described above, and the cured resin layer is formed by reacting the resin by irradiation with heat or light.

  The cured resin layer having unevenness according to the present invention can be obtained by appropriately changing parameters such as the solvent, the dispersant, the addition amount of the ultrafine particles A, and the thickness of the cured resin layer within the above-described ranges, thereby allowing Rz, Ra, Can control the haze freely.

  In addition, since the uneven shape on the surface of the cured resin layer in the present invention also depends on the dispersibility and thixotropy of the ultrafine particles to be used, a solvent or a dispersant is used when forming the cured resin layer for the purpose of controlling these. Can be appropriately selected and used. As the solvent, for example, various alcohols, aromatics, ketones, lactates, cellosolves, glycols and the like can be used. Examples of the dispersant include various fatty acid amines, sulfonic acid amides, ε-caprolactone, hydrostearic acid, polycarboxylic acid, and polyesteramine. These solvents and dispersants can be used alone or in combination of two or more.

  Despite the fact that the cured resin layer in the present invention is composed of only the cured resin component and the ultrafine particles, the length does not form an aggregate of 1.0 μm or more as in the method proposed in Patent Document 5 described above. The reason for forming the aggregates of less than 1.0 μm and forming the irregularities is not clear, but it is considered that the surface tension of the ultrafine particles is moving the surface of the cured resin layer. This phenomenon tends to be observed particularly when ultrafine particles form an aggregate having a length of less than 1.0 μm and have an appropriate thixotropy. By appropriately selecting a solvent, a leveling agent, and a curable resin. A surface with completely different surface properties can be formed.

Transparent organic polymer substrate As the transparent organic polymer substrate used in the present invention, a film made of a thermoplastic or thermosetting organic polymer compound excellent in transparency can be used. The organic polymer compound is not particularly limited as long as it is a transparent organic polymer excellent in heat resistance. For example, polyester resins such as polyethylene terephthalate, polyethylene-2, 6-naphthalate, and polydiallyl phthalate, polycarbonate resins And polyether sulfone resin, polysulfone resin, polyarylate resin, acrylic resin, cellulose acetate resin, amorphous polyolefin, and the like.

  Of course, they can also be used as homopolymers, copolymers, or alone or as a blend. These transparent organic polymer substrates are suitably formed by a general melt extrusion method or a solution casting method, etc., but if necessary, the transparent organic polymer film formed is subjected to uniaxial stretching or biaxial stretching. It is also preferable to increase the mechanical strength or increase the optical function.

  In the case of using the transparent conductive laminate of the present invention as a transparent electrode substrate of a transparent touch panel, particularly as a movable electrode substrate, from the viewpoint of strength to maintain flexibility and flatness for operating the transparent touch panel as a switch, The thickness of the substrate shape is preferably 75 to 400 μm. Moreover, when using as a fixed electrode substrate, the sheet-like thing of thickness 0.4-4.0 mm is preferable from the point of the intensity | strength for maintaining flatness, but the film-like thing of thickness 50-400 micrometers is used for other The sheet may be bonded to the sheet, and the total thickness may be 0.4 to 4.0 mm. Or it is also possible to use it by the structure which affixed the film-form thing of thickness 50-400 micrometers on the display surface.

  When the transparent conductive laminate of the present invention is used as a movable electrode substrate of a transparent touch panel, the fixed electrode substrate is formed by forming a transparent conductive layer on the organic polymer film substrate, the glass substrate, or a laminate substrate thereof. May be used. From the viewpoint of the strength and weight of the transparent touch panel, the thickness of the fixed electrode substrate made of a single layer or a laminate is preferably 0.4 to 4.0 mm.

  Recently, a new type of transparent touch panel in which a polarizing plate or (polarizing plate + retardation film) is laminated on the input side (user side) surface of the transparent touch panel has been developed. The advantage of this configuration is that the reflectance of external light inside the transparent touch panel is reduced to less than half by the optical action of the polarizing plate or (polarizing plate + retardation film), and the display with the transparent touch panel installed The purpose is to improve contrast.

In such a type of transparent touch panel, since polarized light passes through the transparent conductive laminate, it is preferable to use a transparent organic polymer substrate having characteristics excellent in optical isotropy. Table in a slow axis direction of the refractive index _{n x,} the refractive index _{n y} in the fast axis direction, Re ₌ when the thickness of the substrate was set to _{d (nm) (n x -n} y) × d (nm) The in-plane retardation value Re is preferably at least 30 nm or less, and more preferably 20 nm or less. Here, the in-plane retardation value Re of the substrate is represented by a value at a wavelength of 590 nm measured using a multi-wavelength birefringence measuring apparatus (M-150 manufactured by JASCO Corporation).

As described above, in the application of the transparent touch panel in which polarized light passes through the illustrated transparent conductive laminate, the in-plane retardation value of the transparent electrode substrate is very important. three-dimensional refractive index characteristics, ie _{K = {(n x + n} y) / 2-n z} × K value represented by d is -250 + 150 nm when the film thickness direction of the refractive index of the substrate was _{n z} It is preferable that it is in the range of −200 to +100 nm, and more preferable for obtaining the excellent viewing angle characteristics of the transparent touch panel.

  Examples of the transparent organic polymer substrate exhibiting excellent optical isotropy characteristics include polycarbonate, amorphous polyarylate, polyether sulfone, polysulfone, triacetyl cellulose, diacetyl cellulose, amorphous polyolefin, and these. Molded substrate formed by molding a modified product of the above or a copolymer with another material into a film, a molded substrate of a thermosetting resin such as an epoxy resin, or an ultraviolet curable resin such as an acrylic resin was molded into a film or sheet Examples include molded substrates. Molding of polycarbonate, amorphous polyarylate, polyether sulfone, polysulfone, amorphous polyolefin and their modified products or copolymers with other materials from the viewpoint of moldability, production cost, thermal stability, etc. A substrate is most preferred.

  More specifically, examples of the polycarbonate include bisphenol A, 1,1-di (4-phenol) cyclohexylidene, 3,3,5-trimethyl-1,1-di (4-phenol) cyclohexylidene, Polymer or copolymer having at least one component selected from the group consisting of fluorene-9,9-di (4-phenol), fluorene-9,9-di (3-methyl-4-phenol) and the like as a monomer unit Molding of a polycarbonate or a mixture thereof having an average molecular weight of about 15,000 to 100,000 (for example, “Panlite” manufactured by Teijin Chemicals Ltd., “Apec HT” manufactured by Bayer, etc.) A substrate is preferably used.

  Further, as the amorphous polyarylate, molded substrates such as “Elmec” manufactured by Kaneka Chemical Co., Ltd., “U Polymer” manufactured by Unitika Co., Ltd., “Isalil” manufactured by Isonova Co., Ltd. are exemplified.

  Examples of the amorphous polyolefin include molded substrates such as “ZEONOR” manufactured by ZEON CORPORATION and “ARTON” manufactured by JSR Corporation.

  Examples of the method for producing a molded substrate using these polymer compounds include methods such as a melt extrusion method, a solution casting method, and an injection molding method, but particularly from the viewpoint of obtaining excellent optical isotropy. It is preferable to perform molding using a solution casting method.

Transparent conductive film layer In this invention, a transparent conductive film is provided on the cured resin layer-1 having irregularities or in contact with the cured resin layer-2 and optical interference layer described later. In particular, by providing a transparent conductive film in contact with the cured resin layer-2 described later, mechanical properties such as writing durability of the transparent conductive laminate are improved.

  Here, as the transparent conductive layer, there are an ITO film containing 2 to 20% by weight of tin oxide and a tin oxide film doped with antimony, fluorine, or the like. As a method for forming the transparent conductive layer, a sputtering method or a vacuum deposition method is used. There are PVD methods such as an ion plating method, coating methods, printing methods, and CVD methods, and PVD methods or CVD methods are preferred.

  In the case of the PVD method or the CVD method, the thickness of the transparent conductive layer is preferably 5 to 50 nm, more preferably 10 to 30 nm, from the viewpoints of transparency and conductivity. If the film thickness of the transparent conductive film layer is less than 10 nm, the resistance value tends to be inferior in stability over time, and if it exceeds 30 nm, the transmittance of the transparent conductive laminate decreases, which is not preferable. The surface resistance value is 100 to 2000Ω / □ (Ω / sq) at a film thickness of 10 to 30 nm, more preferably 140 to 2000Ω / □ (Ω / sq) due to reduction of power consumption of the transparent touch panel and necessity for circuit processing. It is preferable to use a transparent conductive film layer exhibiting the above range. Further, a film made mainly of crystalline (substantially 100%) indium oxide is more preferable as the transparent conductive layer. In particular, a layer composed mainly of crystalline indium oxide having a crystal grain size of 3000 nm or less is preferably used. A crystal grain size exceeding 3000 nm is not preferable because writing durability is deteriorated. Here, the crystal grain size defines the largest one of the diagonal lines or diameters in each polygonal or oval region observed under a transmission electron microscope (TEM).

Cured resin layer-2
In the present invention, the cured resin layer-2 may be provided between the cured resin layer-1 having irregularities and the transparent conductive film layer in order to impart and improve optical properties such as total light transmittance. Examples of the cured resin layer-2 used in the present invention include ionizing radiation curable resins and thermosetting resins.

  Examples of the ionizing radiation curable resin include monofunctional and polyfunctional acrylate type ionizing radiation curable resins such as polyol acrylate, polyester acrylate, urethane acrylate, epoxy acrylate, modified styrene acrylate, melamine acrylate, and silicon-containing acrylate.

  Examples of thermosetting resins include organosilane thermosetting resins (alkoxysilane) such as methyltriethoxysilane and phenyltriethoxysilane, melamine thermosetting resins such as etherified methylol melamine, and isocyanate thermosetting resins. Phenolic thermosetting resins, epoxy curable resins, and the like. These curable resins may be used alone or in combination. Moreover, it is also possible to mix a thermoplastic resin as needed. When the resin layer is crosslinked by heat, an appropriate amount of a known reaction accelerator and curing agent is added. Examples of the reaction accelerator include triethylenediamine, dibutyltin dilaurate, benzylmethylamine, pyridine and the like. Examples of the curing agent include methylhexahydrophthalic anhydride, 4,4′-diaminodiphenylmethane, 4,4′-diamino-3,3′-diethyldiphenylmethane, diaminodiphenylsulfone, and the like.

  The alkoxysilane is formed by hydrolysis and condensation polymerization to form a cured resin layer. Examples of the alkoxysilane include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, γ-glycidoxypropyltrimethoxysilane, and β- (3,4 epoxy cyclohexyl) ethyl. Examples include trimethoxysilane, vinyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyldimethoxysilane, γ-aminopropyltriethoxysilane, and the like. .

  These alkoxysilanes are preferably used in a mixture of two or more from the viewpoints of the mechanical strength, adhesion and solvent resistance of the layer, and in particular from the viewpoint of solvent resistance, It is preferable that the alkoxysilane which has an amino group in a molecule | numerator is contained in the range of 0.5-40% of a ratio.

  Alkoxysilane may be used as a monomer or may be used after being hydrolyzed and dehydrated and condensed into a suitable oligomer. Usually, a coating solution dissolved and diluted in an appropriate organic solvent is applied onto a substrate. . The coating film formed on the substrate is hydrolyzed by moisture in the air and the like, and subsequently cross-linked by dehydration condensation.

  In general, an appropriate heat treatment is required to promote crosslinking, and it is preferable to perform a heat treatment for several minutes or more at a temperature of 100 ° C. or higher in the coating process. In some cases, the degree of crosslinking can be further increased by irradiating the coating with an actinic ray such as ultraviolet rays in parallel with the heat treatment.

  As the diluting solvent, alcohol-based or hydrocarbon-based solvents such as ethanol, isopropyl alcohol, butanol, 1-methoxy-2-propanol, hexane, cyclohexane, ligroin and the like are preferable. In addition, polar solvents such as xylene, toluene, cyclohexanone, methyl isobutyl ketone, and isobutyl acetate can also be used. These can be used alone or as a mixed solvent of two or more.

  As a method for forming the cured resin layer-2, the same method as that for the cured resin layer-1 can be used.

  In order to adjust the refractive index of the cured resin layer-2, an ultrafine particle A or a fluorine-based resin composed of a metal oxide and / or metal fluoride having an average primary particle size of 100 nm or less is used alone or in combination. You may do it. The refractive index of the cured resin layer-2 is smaller than the refractive index of the cured resin layer-1, and the refractive index is preferably 1.20 to 1.55, more preferably 1.20 to 1.45. . The thickness of the cured resin layer-2 is preferably 0.05 to 0.5 μm, and more preferably 0.05 to 0.3 μm.

  The average primary particle size of the ultrafine particles A is preferably 100 nm or less, more preferably 50 nm or less. By controlling the primary particle diameter of the ultrafine particles C to 100 nm or less, a good optical interference layer can be formed without whitening of the coating film.

Examples of the ultrafine particles A include Al ₂ O ₃ , Bi ₂ O ₃ , CeO ₂ , In ₂ O ₃ , (In ₂ O ₃ .SnO ₂ ), HfO ₂ , La ₂ O ₃ , MgF ₂ , and Sb ₂ O. ₅ , (Sb ₂ O ₅ .SnO ₂ ), SiO ₂ , SnO ₂ , TiO ₂ , Y ₂ O ₃ , ZnO, ZrO ₂ and other metal oxides or ultrafine particles of metal fluoride are exemplified, and MgF ₂ is preferable. , SiO _{2 and} other metal oxide or metal fluoride ultrafine particles having a refractive index of 1.55 or less.

  The content of the ultrafine particles A is 10 to 400 parts by weight, preferably 30 to 400 parts by weight, more preferably 50 to 300 parts by weight with respect to 100 parts by weight of the thermosetting resin and / or ionizing radiation curable resin. . When the content of ultrafine particles A is 400 parts by weight, the film strength and adhesion may be insufficient. On the other hand, when the content of ultrafine particles A is 10 parts by weight or less, a predetermined refractive index may not be obtained. .

  When the ultrafine particles A are contained in the cured resin layer-2 or the optical interference layer described later, the ultrafine particles A are uniformly contained in the cured resin layer-2 or the optical interference layer, unlike when added to the cured resin layer-1. Use those which are dispersed and do not have aggregates or thixotropy.

  Examples of the fluorine resin include vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, fluoroethylene, trifluoroethylene, chlorotrifluoroethylene, 1,2-dichloro-1,2-difluoroethylene, 2-bromo-3, 3,3-trifluoroethylene, 3-bromo-3,3-difluoropropylene, 3,3,3-trifluoropropylene, 1,1,2-trichloro-3,3,3-trifluoropropylene, α-tripropylene The thing containing 5-70 weight% of monomer components which have fluorine atoms, such as fluoromethacrylic acid, is illustrated.

  The content of the fluororesin is 50 to 300 parts by weight, preferably 100 to 300 parts by weight, and more preferably 150 to 250 parts by weight with respect to 100 parts by weight of the thermosetting resin and / or ionizing radiation curable resin. . When the fluorine resin content is 300 parts by weight or more, the film strength and adhesion may be insufficient. On the other hand, when the fluorine resin content is 50 parts by weight or less, a predetermined refractive index may not be obtained. .

Optical Interference Layer In the present invention, an optical interference layer can be provided between the cured resin layer-1 having irregularities and the transparent conductive film layer in order to control the refractive index and enhance transparency.

  The optical interference layer used in the present invention is composed of at least one high refractive index layer and at least one low refractive index layer. Two or more combination units of the high refractive index layer and the low refractive index layer may be used. When the optical interference layer is composed of one high refractive index layer and one low refractive index layer, the thickness of the optical interference layer is preferably 30 nm to 300 nm, and more preferably 50 nm to 200 nm.

  The high refractive index layer constituting the optical interference layer of the present invention is a layer formed mainly by hydrolysis and condensation polymerization of metal alkoxide. The metal alkoxide contains a metal alkoxide other than alkoxysilane as a main component (for example, 50% by weight or more, preferably 70% by weight or more).

  Examples of the metal alkoxide other than the alkoxysilane used in the present invention include titanium alkoxide and zirconium alkoxide.

  Examples of the titanium alkoxide include titanium tetraisopropoxide, tetra-n-propyl orthotitanate, titanium tetra-n-butoxide, and tetrakis (2-ethylhexyloxy) titanate.

  Examples of the zirconium alkoxide include zirconium tetraisopropoxide and zirconium tetra-n-butoxide.

  In the high refractive index layer, an ultrafine particle A having an average primary particle diameter of 100 nm or less made of the metal oxide or metal fluoride described above may be added alone or in an appropriate amount. It is possible to adjust the refractive index of the high refractive index layer by adding the ultrafine particles C.

  When the ultrafine particles A are added to the high refractive index layer, the weight ratio of the ultrafine particles A to the metal alkoxide is preferably (0: 100) to (60:40), more preferably (0: 100) to (40:60). When the weight ratio between the ultrafine particles A and the metal alkoxide exceeds (60:40), the strength and adhesion necessary for the optical interference layer may be insufficient, which is not preferable.

The thickness of the high refractive index layer is preferably 15 to 250 nm, more preferably 30 to 150 nm.
Further, the refractive index of the high refractive index layer is larger than those of the low refractive index layer and the cured resin layer-2 described later, and the difference is preferably 0.2 or more.

  The low refractive index layer constituting the optical interference layer of the present invention may be the same as the cured resin layer-2. The thickness of the low refractive index layer is preferably 15 to 250 nm, more preferably 30 to 150 nm.

Clear hard coat layer having substantially no irregularities The transparent conductive laminate of the present invention is used as a movable electrode substrate of a transparent touch panel, and a surface to which an external force is applied, that is, a transparent organic polymer substrate surface opposite to the transparent conductive film layer In addition, a clear hard coat layer having substantially no unevenness is provided. Here, “substantially has no unevenness” means, for example, that the ten-point average roughness (Rz) defined in JIS B0601 is less than 100 nm and the average arithmetic roughness (Ra) is less than 10 nm. "Means.

Materials for forming the clear hard coat layer include organosilane thermosetting resins such as methyltriethoxysilane and phenyltriethoxysilane, melamine thermosetting resins such as etherified methylolmelamine, polyol acrylate, There are polyfunctional acrylate-based ultraviolet curable resins such as polyester acrylate, urethane acrylate, and epoxy acrylate, and a mixture of ultrafine particles such as SiO ₂ and MgF ₂ can be used as necessary. At that time, it is preferable that the ultrafine particles are uniformly dispersed in the hard coat layer. The thickness of the hard coat layer is preferably 2 to 5 μm from the viewpoint of flexibility and friction resistance.

  The hard coat layer can be formed by a coating method. As an actual coating method, the above compounds are dissolved in various organic solvents, and after coating on a transparent organic polymer film using a coating liquid whose concentration and viscosity are adjusted, radiation irradiation, heat treatment, etc. Harden the layer. Examples of the coating method include micro gravure coating method, Mayer bar coating method, direct gravure coating method, reverse roll coating method, curtain coating method, spray coating method, comma coating method, die coating method, knife coating method, spin coating method, etc. These various coating methods are used.

  The hard coat layer is laminated directly on the transparent organic polymer substrate or via an appropriate anchor layer. Examples of such an anchor layer include various layers such as a layer having a function of improving the adhesion between the hard coat layer and the transparent organic polymer substrate, and a layer having a three-dimensional refractive index characteristic with a negative K value. Preferred are a phase compensation layer, a layer having a function of preventing the transmission of moisture and air or a function of absorbing moisture and air, a layer having a function of absorbing ultraviolet rays and infrared rays, and a layer having a function of reducing the chargeability of the substrate. Can be mentioned.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further more concretely, this invention is not limited to this Example. In the examples, parts and% are based on weight unless otherwise specified. Various measurements in the examples were performed as follows.
Surface roughness:
Measurement was performed using a stylus step meter DEKTAK3 manufactured by Sloan. The measurement conditions were a measurement length of 2000 μm and a high-pass filter of 20.00 μm, and the waviness component of the substrate was removed to calculate Ra and Rz.
Haze:
A haze value was measured using a haze meter “NDH 2000” manufactured by Nippon Denshoku Industries Co., Ltd.
Flicker property evaluation:
A transparent touch panel was placed on a liquid crystal display of about 123 dpi (diagonal 10.4 inches, XGA (1024 × 768 dots)), and the presence or absence of flicker was visually confirmed.
Evaluation of interference pattern derived from transparent organic polymer substrate:
The interference pattern was observed on the transparent touch panel under a three-wavelength fluorescent lamp.
Confirmation of dispersion of ultrafine particles:
The transparent organic polymer substrate with a cured resin layer having unevenness according to the present invention was embedded with an epoxy resin, and after the epoxy resin was completely cured, a thin sample was prepared with a microtome. This sample was observed with a transmission electron microscope, and it was confirmed that the dispersion of ultrafine particles was substantially uniformly dispersed (secondary aggregated particles of 1 μm or more were not formed).

[Example 1]
As tetrafunctional acrylate, 100 parts by weight of “Aronix” M-405 (manufactured by Toagosei Co., Ltd.) and 5 parts by weight of “Irgacure” 184 (manufactured by Ciba Specialty Chemicals) as a radical photopolymerization initiator are isobutyl. A coating solution A was prepared by dissolving in alcohol. The coating solution A and 10 wt% isopropyl alcohol dispersion of SiO ₂ ultrafine particles (manufactured by CII Kasei Co., Ltd.) having an average primary particle size of 30 nm are 15 parts by weight with respect to 100 parts by weight of the cured resin component. A coating liquid B was prepared by mixing.

  A transparent organic polymer substrate is coated on one side of a polyester film (“Teijin Tetron Film” manufactured by Teijin DuPont Films Ltd., OFW-188) with a coating solution B by a bar coating method so that the film thickness becomes 3 μm. After drying at 80 ° C. for 1 minute, ultraviolet rays were irradiated to form a cured resin layer-1 (a) having irregularities. The results of haze measurement at this time are shown in Table 1.

2 and 3 are photographic diagrams showing the dispersion state of ultrafine particles in the SiO ₂ cured resin layer-1 (a). As can be seen from these photographic diagrams, the ultrafine SiO ₂ particles are 1.0 μm or more. The agglomerates are not formed and are dispersed.

  The clear hard coat layer 1 having a film thickness of 4 μm was formed on the opposite surface on which the cured resin layer-1 (a) was formed using an ultraviolet curable polyfunctional acrylate resin paint.

  Next, γ-glycidoxypropyltrimethoxylane (“KBM403” manufactured by Shin-Etsu Chemical Co., Ltd.) and methyltrimethoxysilane (“KBM13” manufactured by Shin-Etsu Chemical Co., Ltd.) are mixed at a molar ratio of 1: 1, and acetic acid is mixed. The alkoxysilane was hydrolyzed with an aqueous solution (pH = 3.0) by a known method. N-β (aminoethyl) γ-aminopropylmethoxysilane (“KBM603” manufactured by Shin-Etsu Chemical Co., Ltd.) was added to the alkoxysilane hydrolyzate thus obtained at a weight ratio of solid content of 20: 1. Further, this was diluted with a mixed solution of isopropyl alcohol and n-butanol to prepare an alkoxysilane coating solution C.

  On the cured resin layer-1 (a), the alkoxysilane coating liquid C was coated by a bar coating method, and after baking at 130 ° C. for 2 minutes, a cured resin layer-2 (a) was produced. Furthermore, an ITO layer is formed on the cured resin layer-2 (a) by sputtering using an indium oxide-tin oxide target having a composition of indium oxide and tin oxide of 95: 5 in a weight ratio of 98% and a filling density of 98%. A transparent conductive laminate to be an electrode substrate was produced. The thickness of the formed ITO layer was about 20 nm, and the surface resistance value after film formation was about 350 Ω / □ (Ω / sq). The manufactured movable electrode substrate was heat-treated at 150 ° C. for 90 minutes to crystallize the ITO film. The surface resistance value after crystallization of ITO was about 280Ω / □ (Ω / sq).

On the other hand, after SiO ₂ dip coating was performed on both surfaces of a 1.1 mm thick glass plate, an 18 nm thick ITO film was formed by sputtering. Next, a fixed electrode substrate was produced by forming dot spacers having a height of 7 μm, a diameter of 70 μm, and a pitch of 1.5 mm on the ITO film. A transparent touch panel having the configuration shown in FIG. 1 was produced using the produced fixed electrode substrate and movable electrode substrate.
Table 1 shows the flicker evaluation of the produced transparent touch panel on the high-definition liquid crystal display and the evaluation result of the interference pattern derived from the transparent organic polymer substrate.

[Comparative Example 1]
A coating liquid D is prepared by mixing silica-based particles having an average primary particle size of 3.0 μm with the coating liquid A used in Example 1 so as to be 0.5 parts by weight with respect to 100 parts by weight of the cured resin component. did.
Coating on one side of a polyester film (“Teijin Tetron Film” OFW-188 manufactured by Teijin DuPont Films Ltd.) on a transparent organic polymer substrate with a bar coating method so that the film thickness is 2.3 μm. Then, after drying at 80 ° C. for 1 minute, ultraviolet rays were irradiated to form a cured resin layer-1 (b) having irregularities. Table 1 shows the haze measurement results at this time.
A hard coat layer 1 having a thickness of 4 μm was formed in the same manner as in Example 1 on the opposite surface on which the cured resin layer-1 (b) was formed.

  Next, the cured resin layer-2 (a) was produced in the same manner as in Example 1 on the cured resin layer-1 (b) using the alkoxysilane coating liquid C used in Example 1. Further, an ITO layer was formed on the cured resin layer-2 (a) by a sputtering method in the same manner as in Example 1 to produce a transparent conductive laminate to be a movable electrode substrate. The thickness of the formed ITO layer was about 20 nm, and the surface resistance value after film formation was about 350 Ω / □ (Ω / sq). The manufactured movable electrode substrate was heat-treated at 150 ° C. for 90 minutes to crystallize the ITO film. The surface resistance value after crystallization of ITO was about 280Ω / □ (Ω / sq).

  A transparent touch panel having the configuration shown in FIG. 1 was produced using a fixed electrode substrate and a movable electrode substrate produced in the same manner as in Example 1. Table 1 shows the flicker evaluation on the high-definition liquid crystal display of the produced transparent touch panel and the interference pattern evaluation result derived from the transparent organic polymer substrate.

[Comparative Example 2]
15 parts by weight of the coating liquid A used in Example 1 and 20% by weight of an alcohol dispersion of 20% by weight of MgF ₂ ultrafine particles (CI Chemical Co., Ltd.) having an average primary particle size of 20 nm with respect to 100 parts by weight of the cured resin component Thus, a coating solution E was prepared by mixing.

A transparent organic polymer substrate is coated on one side of a polyester film (“Teijin Tetron Film” manufactured by Teijin DuPont Films Co., Ltd., OFW-188) with a coating solution B by a bar coating method so that the film thickness is 5 μm. After drying at 80 ° C. for 1 minute, a cured resin layer-1 (c) having irregularities was formed by irradiation with ultraviolet rays. On the surface of the formed cured resin layer-1 (c), a cured resin layer having flat irregularities was obtained. 2 and 3 show the dispersion state of ultrafine particles in the MgF ₂ cured resin layer-1 (c). As can be seen from FIGS. 2 and 3, MgF ₂ ultrafine particles were confirmed to be uniformly dispersed in the cured resin without forming aggregates.

  Next, the cured resin layer-2 (a) was produced in the same manner as in Example 1 on the cured resin layer-1 (b) using the alkoxysilane coating liquid C used in Example 1. Further, an ITO layer was formed on the cured resin layer-2 (a) by a sputtering method in the same manner as in Example 1 to produce a transparent conductive laminate to be a movable electrode substrate. The thickness of the formed ITO layer was about 20 nm, and the surface resistance value after film formation was about 350 Ω / □ (Ω / sq). The manufactured movable electrode substrate was heat-treated at 150 ° C. for 90 minutes to crystallize the ITO film. The surface resistance value after crystallization of ITO was about 280Ω / □ (Ω / sq).

  A transparent touch panel having the configuration shown in FIG. 1 was produced using a fixed electrode substrate and a movable electrode substrate produced in the same manner as in Example 1. Table 1 shows the flicker evaluation on the high-definition liquid crystal display of the produced transparent touch panel and the interference pattern evaluation result derived from the transparent organic polymer substrate.

It is the schematic diagram showing the structure of the transparent touch panel produced by operation of Example 1 and Comparative Examples 1 and 2. FIG. It is the cross-sectional photograph which image | photographed with the transmission electron microscope after making the polymer substrate with the cured resin layer which has the unevenness | corrugation formed in Example 1 into a thin piece sample with a microtome after embedding with a cured resin. It is the cross-sectional photograph figure which further expanded and imaged the cured resin layer which has the unevenness | corrugation containing the ultrafine particle of FIG.

Explanation of symbols

1 Hard Coat Layer 2 Organic Polymer Substrate 3 Cured Resin Layer-1
4 cured resin layer-2
5 transparent conductive layer 6 glass substrate 7 embedding resin 8 cured resin layer 9 having unevenness containing ultrafine particles PET film 10 enlarged portion of cured resin layer having unevenness containing ultrafine particles

Claims (6)

  A clear hard coat layer having no substantial unevenness is laminated on one side of the transparent organic polymer substrate, and a cured resin layer-1 having an unevenness and a transparent conductive film layer are sequentially laminated on the opposite side of the hard coat layer. A transparent resin laminate, wherein the cured resin layer-1 comprises a cured resin component and ultrafine particles A composed of a metal oxide and / or metal fluoride having an average primary particle size of 100 nm or less, and (1) curing Ultrafine particles A are contained in a proportion of 5 parts by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the resin component, (2) and the ultrafine particles A form an aggregate of less than 1.0 μm, (3 ) The thickness of the cured resin layer-1 is 1 μm or more and 10 μm or less, and (4) the ten-point average roughness (Rz) defined by JIS B0601 of the cured resin layer-1 is 100 nm or more and less than 500 nm, average Arithmetic roughness (Ra) 10nm The haze defined by JIS B7136 when the cured resin layer-1 having unevenness is laminated on the transparent organic polymer substrate is 1% or more and less than 5%. A transparent conductive laminate characterized by the above. Ultrafine particles A are Al ₂ O ₃ , Bi ₂ O ₃ , CeO ₂ , In ₂ O ₃ , (In ₂ O ₃ .SnO ₂ ), HfO ₂ , La ₂ O ₃ , MgF ₂ , Sb ₂ O ₅ , ( Sb ₂ O ₅ .SnO ₂ ), SiO ₂ , SnO ₂ , TiO ₂ , Y ₂ O ₃ , ZnO and ZrO _2, at least one metal oxide and / or metal fluoride selected from the group consisting of The transparent conductive laminate according to 1.   The cured resin layer-2 having a refractive index of 1.20 to 1.55 and a film thickness of 0.05 to 0.5 μm is provided between the cured resin layer-1 and the transparent conductive film layer. The transparent conductive laminate described.   An optical interference layer comprising at least one low refractive index layer and at least one high refractive index layer is provided between the cured resin layer-1 and the transparent conductive film layer, and the low refractive index layer is a transparent conductive film layer. The transparent conductive laminated body of Claim 1 or 2 which contacts with.   The transparent conductive laminate according to claim 1, wherein the transparent conductive film layer is a crystalline film containing indium oxide as a main component, and the thickness of the transparent conductive film layer is 5 to 50 nm.   2. A transparent touch panel in which two transparent electrode substrates each provided with a transparent conductive layer on at least one side are arranged so that the transparent conductive layers face each other, and as a transparent electrode substrate for a movable electrode substrate, A transparent touch panel using the transparent conductive laminate according to any one of -5.

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