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WO2013114945A1 - Film conducteur transparent, panneau tactile, et dispositif d'affichage - Google Patents

Film conducteur transparent, panneau tactile, et dispositif d'affichage Download PDF

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Publication number
WO2013114945A1
WO2013114945A1 PCT/JP2013/050621 JP2013050621W WO2013114945A1 WO 2013114945 A1 WO2013114945 A1 WO 2013114945A1 JP 2013050621 W JP2013050621 W JP 2013050621W WO 2013114945 A1 WO2013114945 A1 WO 2013114945A1
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WIPO (PCT)
Prior art keywords
refractive index
transparent conductive
easy
layer
adhesion layer
Prior art date
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Ceased
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PCT/JP2013/050621
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English (en)
Japanese (ja)
Inventor
桐本高代志
中道夏樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Advanced Film Co Ltd
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Toray Advanced Film Co Ltd
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Priority to JP2013502330A priority Critical patent/JP5397824B1/ja
Priority to KR1020147020184A priority patent/KR101524580B1/ko
Priority to CN201380006513.7A priority patent/CN104067352B/zh
Publication of WO2013114945A1 publication Critical patent/WO2013114945A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers
    • G02B1/116—Multilayers including electrically conducting layers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a transparent conductive film having good light transmission, and in particular, transparent conductivity capable of suppressing a decrease in light transmission from a display panel in a touch panel and a display device using the transparent conductive film. Related to film.
  • the transparent conductive film used for touch panels, etc. is provided on the opposite side of the transparent conductive film (provided with a transparent conductive film on the base film) in order to provide scratch resistance on the touch input surface and antireflection of external light. It is known that functional layers such as a hard coat layer, an antireflection layer, and an antiglare layer are laminated on a surface opposite to the surface on which the surface is coated (Patent Documents 1 and 2).
  • the antireflection layer can take a multilayer structure or a single structure.
  • high antireflection properties are easily obtained, but there are problems of production cost (low productivity) and interference fringes are likely to occur.
  • the antireflection layer has a single structure, the cost is low, but there are problems that sufficient antireflection properties cannot be obtained, deterioration of scratch resistance, slippage and blocking resistance. Further, the above patent document does not specifically describe a single antireflection layer.
  • an object of the present invention is to provide a transparent conductive film having good antireflection properties at low cost.
  • Another object of the present invention is to provide a touch panel using the transparent conductive film of the present invention and a display device including the touch panel.
  • the above object of the present invention has been achieved by the following invention. 1) Having a transparent conductive film on one surface of a base film having a refractive index of 1.6 to 1.7, and having a refractive index of 1.42 via an easy-adhesion layer on the other surface of the base film.
  • Condition 1 the absolute value of the difference between the refractive index of the base film and the refractive index of the easy-adhesion layer is 0.08 or less.
  • a transparent conductive film is provided on one surface of a base film having a refractive index of 1.6 to 1.7, and the refractive index is 1.42 via an easy-adhesion layer on the other surface of the base film.
  • the thickness of the easy adhesion layer is 5 nm or more and less than 50 nm.
  • a transparent conductive film is provided on one surface of a base film having a refractive index of 1.6 to 1.7, and the refractive index is 1.42 via an easy-adhesion layer on the other surface of the base film.
  • Condition 1 The absolute value of the difference between the refractive index of the base film and the refractive index of the easy adhesion layer is 0.08 or less.
  • the thickness of the easy adhesion layer is 5 nm or more and less than 50 nm.
  • the transparent conductive film according to 1) or 4), wherein the easy-adhesion layer has a thickness of 5 nm or more and less than 200 nm.
  • the transparent conductive film of 11) above containing the particles in an amount of 0.05 to 20% by mass with respect to 100% by mass of the solid content of the easy-adhesion layer 13)
  • the low refractive index layer is an ethylenically unsaturated group
  • a touch panel comprising the transparent conductive film according to any one of 1) to 13).
  • the present invention it is possible to provide a transparent conductive film having good antireflection properties at low cost.
  • a touch panel and / or an electromagnetic wave shielding member using the transparent conductive film of the present invention in a display device, a display device having good light transmission from the display panel can be provided.
  • the transparent conductive film with improved slip property can be provided.
  • the transparent conductive film by which the oligomer precipitation from the base film was suppressed can be provided.
  • FIG. 1 is a schematic cross-sectional view of an example of a display device provided with a resistive touch panel using the transparent conductive film of the present invention.
  • FIG. 2 is a schematic cross-sectional view of an example of a display device provided with a capacitive touch panel using the transparent conductive film of the present invention.
  • FIG. 3 is a schematic cross-sectional view of an example of a display device provided with a capacitive touch panel using the transparent conductive film of the present invention.
  • FIG. 4 is a schematic cross-sectional view of an example of a display device provided with an electromagnetic wave shielding member using the transparent conductive film of the present invention.
  • the transparent conductive film of the present invention has a transparent conductive film on one surface of the base film, and only one layer of a low refractive index layer on the other surface of the base film via an easy-adhesion layer.
  • a transparent conductive film on one surface of the base film and only one layer of a low refractive index layer on the other surface of the base film via an easy-adhesion layer.
  • the base film of the present invention is a film having a refractive index in the range of 1.6 to 1.7. From the viewpoint of reducing the reflectance at the interface between the low refractive index layer and the air layer, the base film is preferably as large as possible. Specifically, the refractive index of the base film is preferably 1.61 or more, more preferably 1.62 or more, further preferably 1.63 or more, and particularly preferably 1.64 or more.
  • the base film of the present invention can be selected from plastic films.
  • plastic films a polyester film is preferable from the viewpoint of tensile strength, heat resistance, and solvent resistance, and a polyethylene terephthalate film (PET film) is particularly preferably used.
  • PET film polyethylene terephthalate film
  • the thickness of the substrate film is suitably in the range of 20 to 300 ⁇ m, preferably in the range of 30 to 200 ⁇ m, and more preferably in the range of 50 to 150 ⁇ m.
  • the easy-adhesion layer of the present invention enhances the adhesion between the base film and the low refractive index layer, and has excellent antireflection properties (low reflectance) due to the combination of the base film and the low refractive index layer described below. It is for maintaining.
  • the easy-adhesion layer needs to satisfy the following condition 1, condition 2, or (condition 1 and condition 2).
  • condition 1 the absolute value of the difference between the refractive index of the base film and the refractive index of the easy-adhesion layer is 0.08 or less.
  • Condition 2 The thickness of the easy adhesion layer is 5 nm or more and less than 50 nm.
  • the easy adhesion layer of Condition 1 is an easy adhesion layer in which the absolute value of the difference between the refractive index of the base film and the refractive index of the easy adhesion layer satisfies 0.08 or less.
  • the absolute value of the refractive index difference is preferably 0.06 or less, more preferably 0.05 or less, particularly preferably 0.03 or less, and most preferably 0.01 or less. If the absolute value of the difference between the refractive index of the base film and the refractive index of the easy-adhesion layer is greater than 0.08, good antireflection properties cannot be obtained.
  • the easy-adhesion layer preferably does not have a very high hardness from the viewpoint of enhancing the adhesion between the base film and the low refractive index layer. Since the transparent conductive film of the present invention has only a very thin low refractive index layer on the easy adhesion layer, the hardness of the low refractive index layer decreases when the thickness of the easy adhesion layer is not so high. Inconvenience may occur. Therefore, it is preferable that the thickness of the easy adhesion layer is relatively small.
  • the thickness of the easy adhesion layer is specifically preferably less than 200 nm, more preferably less than 150 nm, further preferably less than 130 nm, and particularly preferably less than 100 nm.
  • the lower limit thickness is preferably 5 nm or more, more preferably 10 nm or more, and even more preferably 20 nm or more from the viewpoint of ensuring the adhesion between the base film and the low refractive index layer.
  • the easy-adhesion layer of Condition 1 is an easy-adhesion layer having a relatively high refractive index, and such an easy-adhesion layer can be obtained by containing a high refractive index material such as a resin or metal oxide fine particles having a relatively high refractive index. it can.
  • the refractive index of a polyethylene terephthalate film is usually about 1.63 to 1.67, and the easy-adhesion layer that has been generally laminated conventionally is composed mainly of a resin such as a polyester resin, an acrylic resin, or a urethane resin.
  • the refractive index is normally relatively small, about 1.50 to 1.54, and does not satisfy Condition 1.
  • One aspect of the easy-adhesion layer of Condition 1 is an aspect in which a resin having a high refractive index is introduced by introducing an aromatic ring, a sulfur atom, a bromine atom, or the like into a resin such as a polyester resin, an acrylic resin, or a urethane resin. is there.
  • the content of the resin having a high refractive index is preferably 50% by mass or more, more preferably 60% by mass or more, particularly 70% by mass with respect to 100% by mass of the solid content of the easy-adhesion layer. % Or more is preferable.
  • the upper limit content is about 98% by mass.
  • a polyester resin having an aromatic ring in the molecule is preferable, and a polyester resin having a condensed aromatic ring in the molecule is more preferable.
  • the condensed aromatic ring include a naphthalene ring and a fluorene ring.
  • the polyester resin is generally obtained by polycondensation from a carboxylic acid component and a glycol component.
  • the polyester resin having a naphthalene ring in the molecule can be synthesized by using a dicarboxylic acid having a naphthalene ring such as 1,4-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylic acid as a carboxylic acid component. .
  • the refractive index of the polyester resin having a naphthalene ring in the molecule can be controlled by adjusting the ratio of the dicarboxylic acid having a naphthalene ring in the total carboxylic acid component.
  • the polyester resin having a fluorene ring in the molecule can be synthesized by using a compound having a fluorene ring as the carboxylic acid component and / or glycol component.
  • the refractive index of the polyester resin can be controlled by adjusting the content of the compound having a fluorene ring.
  • numerator is described in detail in the international publication number WO2009 / 145075, for example, It can synthesize
  • the polyester resin is preferably water-soluble or water-dispersible.
  • a water-soluble or water-dispersible polyester resin can be synthesized by including a trivalent or higher polyvalent carboxylic acid or a dicarboxylic acid having a sulfo group in the carboxylic acid component used for the synthesis of the polyester resin. .
  • the easy-adhesion layer under Condition 1 is an aspect in which metal oxide fine particles are contained.
  • the easy-adhesion layer in this aspect is a layer in which metal oxide fine particles are dispersed in a resin.
  • the resin include an acrylic resin (preferably an acrylic resin having an OH group such as an acrylic resin polyol), a polyester resin (preferably a polyester resin having an OH group such as a polyester resin polyol), an epoxy resin, a urethane resin, and a styrene- A maleic acid grafted polyester resin, an acrylic grafted polyester resin, a silicone resin, or a polyester resin having a condensed aromatic ring in the molecule can be used.
  • titanium oxide, zirconium oxide, zinc oxide, tin oxide, antimony oxide, cerium oxide, iron oxide, zinc antimonate, tin oxide-doped indium oxide (ITO), antimony-doped tin oxide (ATO), phosphorus-doped Tin oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide, or the like can be used.
  • titanium oxide and zirconium oxide are preferable from the viewpoint of transparency, light resistance, and high refractive index, and zirconium oxide is particularly preferable.
  • the content ratio of the resin and the metal oxide fine particles in the easy-adhesion layer is suitably in the range of 100: 10 to 100: 400, preferably in the range of 100: 20 to 100: 300, particularly 100: 30 to 100. : The range of 200 is preferable.
  • the easy adhesion layer of Condition 2 has a thickness in the range of 5 nm or more and less than 50 nm.
  • the thickness of the easy-adhesion layer under Condition 2 is preferably smaller even within the above thickness range, specifically, less than 40 nm, and more preferably less than 30 nm.
  • the lower limit thickness of the easy adhesion layer is preferably 10 nm or more.
  • the refractive index of the easy-adhesion layer under Condition 2 is not particularly limited, but is preferably in the range of 1.45 or more and less than 1.60, more preferably in the range of 1.47 to 1.59, and particularly in the range of 1.48 to 1.58. A range is preferred.
  • the condition 2 easy adhesion layer is preferably a layer containing a resin such as a polyester resin, an acrylic resin, or a urethane resin.
  • an easy-adhesion layer having the same composition as that of Condition 1 can be used as the easy-adhesion layer of Condition 2.
  • an easy-adhesion layer that satisfies the conditions 1 and 2 simultaneously can be used.
  • the easy adhesion layer of the present invention contains at least a resin as described above.
  • a resin preferably contains at least a polyester resin.
  • the content of the resin in the easy adhesion layer is preferably 20% by mass or more, more preferably 30% by mass or more, and particularly preferably 50% by mass or more with respect to 100% by mass of the solid content of the easy adhesion layer. Preferably there is.
  • the upper limit is about 98% by mass.
  • the easy-adhesion layer preferably contains a crosslinking agent.
  • crosslinking agents include melamine crosslinking agents, oxazoline crosslinking agents, carbodiimide crosslinking agents, isocyanate crosslinking agents, aziridine crosslinking agents, epoxy crosslinking agents, methylolated or alkylolized urea crosslinking agents, and acrylamides.
  • Crosslinking agents, polyamide resins, amide epoxy compounds, various silane coupling agents, various titanate coupling agents, and the like can be used.
  • crosslinking agents it is preferable to use at least one member selected from the group consisting of melamine crosslinking agents, oxazoline crosslinking agents, carbodiimide crosslinking agents, isocyanate crosslinking agents, and aziridine crosslinking agents.
  • the content of the crosslinking agent in the easy-adhesion layer is preferably in the range of 1 to 40% by mass, more preferably in the range of 3 to 35% by mass, with respect to 100% by mass of the total solid content of the easy-adhesion layer. % Range is particularly preferred.
  • the easy adhesion layer preferably contains at least a resin and a crosslinking agent. This further improves the adhesion between the base film and the low refractive index layer. Further, such an easy-adhesion layer (an easy-adhesion layer containing at least a resin and a crosslinking agent) is laminated on a base film, and a low refractive index layer (an active energy ray-curable resin composition) described later is formed on the easy-adhesion layer. Is deposited by a wet coating method, and oligomer precipitation from the base film can be suppressed.
  • an oligomer which is a non-crosslinking component
  • This oligomer precipitation includes an easy-adhesion layer (an easy-adhesion layer containing at least a resin and a crosslinking agent) and a low refractive index layer (a low refractive index layer obtained by applying and curing an active energy ray-curable resin composition by a wet coating method). It can suppress by laminating
  • the thickness of the easy adhesion layer is preferably 50 nm or more, more preferably 60 nm or more, and particularly preferably 70 nm or more.
  • the easy adhesion layer further contains particles.
  • the convex structure derived from the particles of the easy-adhesion layer is reflected in the low-refractive index layer.
  • the slipperiness of the surface of the low refractive index layer is improved and good blocking resistance can be maintained.
  • the average particle diameter (r) of the particles contained in the easy-adhesion layer is a relatively large ratio with respect to the thickness (d) of the easy-adhesion layer.
  • Formula 1 1.0 ⁇ (r / d) ⁇ 10 Equation 2
  • the average particle size of the particles to be contained in the easy-adhesion layer is preferably selected in the range of the above formulas 1 to 3, but the average particle size of the particles is specifically preferably in the range of 10 to 600 nm, preferably 20 to 500 nm. Is more preferable, and a range of 30 to 300 nm is particularly preferable.
  • grains contained in an easily bonding layer is a particle diameter calculated
  • the content of the particles in the easy-adhesion layer is preferably in the range of 0.05 to 20% by mass, more preferably in the range of 0.1 to 15% by mass, particularly 0% with respect to 100% by mass of the total solid content of the easy-adhesion layer.
  • the range of 2 to 10% by mass is preferable.
  • the particles contained in the easy-adhesion layer are not particularly limited, but inorganic particles such as silica particles, titanium oxide, aluminum oxide, zirconium oxide, calcium carbonate, carbon black, zeolite particles, acrylic particles, silicone particles, polyimide particles, Teflon Examples include organic particles such as (registered trademark) particles, crosslinked polyester particles, crosslinked polystyrene particles, crosslinked polymer particles, and core-shell particles. Among these, silica particles are preferable, and colloidal silica is particularly preferable.
  • the easy-adhesion layer of the present invention is preferably laminated on the base film by a wet coating method, and more preferably a so-called in-line coating method in which the easy-adhesion layer is laminated in the production process of the base film.
  • the wet coating method include a reverse coating method, a spray coating method, a bar coating method, a gravure coating method, a rod coating method, and a die coating method.
  • the substrate film surface is subjected to corona discharge treatment, flame treatment, plasma treatment, etc. as a preliminary treatment for improving the coatability and adhesion. It is preferable to keep it.
  • PET polyethylene terephthalate
  • PET pellets with an intrinsic viscosity of 0.5 to 0.8 dl / g which is a raw material for PET film, are vacuum-dried, then supplied to an extruder, melted at 260 to 300 ° C, extruded into a sheet form from a T-shaped die,
  • An unstretched PET film is produced by winding it around a mirror casting drum having a surface temperature of 10 to 60 ° C. using an electric application casting method, and cooling and solidifying the drum.
  • This unstretched PET film is stretched 2.5 to 5 times in the machine direction (referred to as the “longitudinal direction”, which refers to the traveling direction of the film) between rolls heated to 70 to 100 ° C.
  • At least one surface of the uniaxially stretched PET film obtained by this stretching is subjected to corona discharge treatment in air, the wetting tension of the surface is set to 47 mN / m or more, and the coating solution for the easy adhesion layer of the present invention is applied to the treated surface. To do.
  • the uniaxially stretched PET film coated with the coating solution is gripped with a clip, guided to a drying zone, dried at a temperature lower than Tg of the uniaxially stretched PET film, then raised to a temperature equal to or higher than Tg, and again at a temperature near Tg. And then continuously stretched by 2.5 to 5 times in the transverse direction (referred to as the direction perpendicular to the film traveling direction) in a heating zone at 70 to 150 ° C., followed by 180 to Heat treatment is performed in a heating zone at 240 ° C. for 5 to 40 seconds to obtain a polyester film in which an easy-adhesion layer is laminated on a PET film in which crystal orientation is completed.
  • Biaxial stretching may be longitudinal, transverse sequential stretching, or simultaneous biaxial stretching, and may be re-stretched in either the longitudinal or transverse direction after longitudinal and transverse stretching.
  • the easy-adhesion layer of the present invention is preferably not a resin layer that is cured by active energy rays such as ultraviolet rays and electron beams from the viewpoint of enhancing the adhesion between the base film and the low refractive index layer.
  • active energy rays such as ultraviolet rays and electron beams
  • an active energy ray-curable high refractive index layer is directly laminated on the base film instead of the easy adhesion layer, sufficient adhesion between the base film and the high refractive index layer cannot be obtained.
  • the low refractive index layer of the present invention is a layer having a refractive index of 1.42 or less and a thickness of 80 to 120 nm.
  • the refractive index of the low refractive index layer is preferably 1.41 or less, more preferably 1.40 or less, and particularly preferably 1.39 or less.
  • the lower limit refractive index is not particularly limited, but is about 1.30.
  • the refractive index of the low refractive index layer is greater than 1.42, good antireflection properties cannot be obtained. Also, good antireflection properties cannot be obtained when the thickness of the low refractive index layer is out of the range of 80 to 120 nm.
  • the thickness of the low refractive index layer is preferably in the range of 85 to 115 nm, particularly preferably in the range of 90 to 110 nm.
  • This metal fluoride film is a film laminated by a vapor deposition method such as a vacuum deposition method, a reactive deposition method, an ion beam assisted deposition method, a sputtering method, an ion plating method, or a plasma CVD method.
  • a vapor deposition method such as a vacuum deposition method, a reactive deposition method, an ion beam assisted deposition method, a sputtering method, an ion plating method, or a plasma CVD method.
  • metal fluoride examples include magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), calcium fluoride (CaF 2 ), barium fluoride (BaF 2 ), strontium fluoride (SrF 2 ), and cryolite. (Na 3 AlF 6), chiolite (Na 5 Al 3 F1 4) , sodium fluoride (NaF), and the like. Of these, magnesium fluoride is preferably used.
  • a preferred embodiment of the low refractive index layer is a layer obtained by applying and curing an active energy ray-curable composition by a wet coating method.
  • a coating method such as a reverse coating method, a spray coating method, a bar coating method, a gravure coating method, a rod coating method, a die coating method, a spin coating method or an extrusion coating method can be used.
  • the active energy ray curable composition examples include an active energy ray curable resin that is cured by active energy rays such as ultraviolet rays and electron beams, and low refractive index inorganic particles and / or fluorine-containing compounds as low refractive index materials.
  • the composition containing is mentioned.
  • the active energy ray-curable resin is a resin that is cured by active energy rays such as ultraviolet rays and electron beams, and monomers and oligomers having at least one ethylenically unsaturated group in the molecule are preferably used.
  • examples of the ethylenically unsaturated group include acryloyl group, methacryloyl group, acryloyloxy group, methacryloyloxy group, vinyl group, and allyl group.
  • the expression “... (Meth) acrylate” includes two compounds “... acrylate” and “... methacrylate”.
  • Examples of the monomer include methyl (meth) acrylate, lauryl (meth) acrylate, ethoxydiethylene glycol (meth) acrylate, methoxytriethylene glycol (meth) acrylate, phenoxyethyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, Monofunctional acrylates such as isobornyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxy-3-phenoxy (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol Tetral (meth) acrylate, dipentaerythritol tri
  • oligomer examples include polyester (meth) acrylate, polyurethane (meth) acrylate, epoxy (meth) acrylate, polyether (meth) acrylate, alkit (meth) acrylate, melamine (meth) acrylate, silicone (meth) acrylate, and the like. Can be mentioned.
  • the above-described monomers and oligomers may be used singly or in combination, but it is preferable to use a trifunctional or higher polyfunctional monomer or oligomer.
  • the content of the active energy ray curable resin is in the range of 5 to 90% by mass with respect to the total solid content of the composition of 100% by mass, and in the range of 5 to 80% by mass.
  • the range of 10 to 70% by mass is more preferable.
  • inorganic particles such as silica and magnesium fluoride are preferable. Further, these inorganic particles are preferably hollow or porous.
  • the refractive index of the inorganic particles is more preferably in the range of 1.2 to 1.35.
  • the content of the low refractive index inorganic particles is preferably in the range of 20 to 70% by mass, more preferably in the range of 25 to 70% by mass with respect to 100% by mass of the total solid content of the composition. In particular, the range of 30 to 60% by mass is preferable.
  • fluorine-containing compound examples include fluorine-containing monomers, fluorine-containing oligomers, and fluorine-containing polymer compounds.
  • the fluorine-containing monomer and fluorine-containing oligomer are monomers and oligomers having an ethylenically unsaturated group and a fluorine atom in the molecule.
  • fluorine-containing monomers and fluorine-containing oligomers examples include 2,2,2-trifluoroethyl (meth) acrylate, 2,2,3,3,3-pentafluoropropyl (meth) acrylate, and 2- (perfluorobutyl).
  • fluorine-containing polymer compound examples include a fluorine-containing copolymer having a fluorine-containing monomer and a monomer for imparting a crosslinkable group as structural units.
  • fluorine-containing monomer unit examples include, for example, fluoroolefins (for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, hexafluoropropylene, perfluoro-2,2-dimethyl-1,3-dioxole, etc.
  • (Meth) acrylic acid partial or fully fluorinated alkyl ester derivatives for example, Biscoat 6FM (manufactured by Osaka Organic Chemical), M-2020 (manufactured by Daikin), etc.), fully or partially fluorinated vinyl ethers, and the like.
  • a monomer for imparting a crosslinkable group in addition to a (meth) acrylate monomer having a crosslinkable functional group in the molecule like glycidyl methacrylate, it has a carboxyl group, a hydroxyl group, an amino group, a sulfonic acid group, etc.
  • Acrylate monomers for example, (meth) acrylic acid, methylol (meth) acrylate, hydroxyalkyl (meth) acrylate, allyl acrylate, etc.).
  • the content of the fluorine-containing compound is preferably 30% by mass or more, more preferably 50% by mass or more, and particularly preferably 60% by mass or more with respect to 100% by mass of the total solid content of the composition.
  • the upper limit is preferably 100% by mass or less, more preferably 99% by mass or less, and particularly preferably 98% by mass or less.
  • the aforementioned fluorine-containing monomer and / or fluorine-containing oligomer can be used as all or part of the active energy ray-curable resin.
  • the active energy ray-curable composition preferably contains a photopolymerization initiator.
  • the photopolymerization initiator include acetophenone, 2,2-diethoxyacetophenone, p-dimethylacetophenone, p-dimethylaminopropiophenone, benzophenone, 2-chlorobenzophenone, 4,4′-dichlorobenzophenone, 4,4′-bisdiethylaminobenzophenone, Michler's ketone, benzyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, methylbenzoyl formate, p-isopropyl- ⁇ -hydroxyisobutylphenone, ⁇ -hydroxyisobutylphenone, 2, Carbonyl compounds such as 2-dimethoxy-2-phenylacetophenone and 1-hydroxycyclohexyl phenyl ketone, tetramethylthiuram monosul
  • the content of the photopolymerization initiator is suitably in the range of 0.1 to 10% by mass, preferably in the range of 0.5 to 8% by mass with respect to 100% by mass of the total solid content of the composition.
  • the active energy ray-curable composition preferably contains a polysiloxane compound having an ethylenically unsaturated group in order to improve the slipperiness and scratch resistance of the surface of the low refractive index layer.
  • the polysiloxane compound having an ethylenically unsaturated group is a compound having one or more ethylenically unsaturated groups at either the terminal or side chain of the polysiloxane main chain in the molecule.
  • the ethylenically unsaturated group include vinyl group, allyl group, acryloyl group, methacryloyl group, acryloyloxy group, and methacryloyloxy group.
  • the number of ethylenically unsaturated groups in the polysiloxane compound having an ethylenically unsaturated group is preferably in the range of 1 to 6.
  • the polydimethylsiloxane compound which has an ethylenically unsaturated group is preferable.
  • Examples of the polysiloxane compound having an ethylenically unsaturated group include compounds of Production Examples 1-1 to 1-3 of JP-A-2009-84327, Silaplane FM-0711 and FM-0721 of Chisso Corporation. FM-0725, manufactured by Shin-Etsu Chemical Co., Ltd., X-24-8201, X-22-174DX, X-22-2426, X-222-2404, X-22-164A, X-22-164C, Commercial products such as BY16-152D, BY16-152, BY16-152C manufactured by Toray Dow Corning Co., Ltd. can be used.
  • the content of the polysiloxane compound having an ethylenically unsaturated group is preferably in the range of 0.5% by mass or more and less than 10% by mass with respect to 100% by mass of the total solid content of the active energy ray-curable composition. % Or more and less than 8% by mass, more preferably 1.3% by mass or more and less than 6% by mass, and particularly preferably 1.5% by mass or more and less than 5% by mass.
  • the slipperiness of the surface of the low refractive index layer is further improved, and the production process The anti-blocking property in the above is improved.
  • the low refractive index layer is a layer obtained by applying and curing the active energy ray-curable resin composition by a wet coating method, oligomer precipitation from the base film can be suppressed.
  • an oligomer (a cyclic trimer) that is a non-crosslinking component is formed on the surface of the polyethylene terephthalate film when heat treatment is performed in a transparent conductive film forming process described later. Body) may precipitate.
  • This oligomer precipitation is caused by the above-mentioned easy adhesion layer (easy adhesion layer containing at least a resin and a crosslinking agent) and a low refractive index layer (low refractive index obtained by applying and curing an active energy ray-curable resin composition by a wet coating method).
  • the layer can be suppressed by laminating.
  • the thickness of the low refractive index layer is preferably 80 nm or more, and more preferably 90 nm or more.
  • the luminous reflectance on the low refractive index layer side is preferably 1.0% or less, more preferably 0.9% or less, and particularly preferably 0.8% or less. It is preferable that it is 0.7% or less.
  • the luminous reflectance on the low refractive index layer side of the transparent conductive film is larger than 1.0%, the light transmittance from the display panel is lowered, and the display quality of the display device is lowered.
  • Transparent conductive film As a material of the transparent conductive film, a known material used for an electrode of a touch panel can be used. Examples thereof include metal oxides such as tin oxide, indium oxide, antimony oxide, zinc oxide, ITO (indium tin oxide) and ATO (antimony tin oxide), metal nanowires such as silver nanowires, and carbon nanotubes. Among these, ITO is preferably used.
  • the thickness of the transparent conductive film is preferably 10 nm or more, more preferably 15 nm or more, and particularly preferably 20 nm or more, from the viewpoint of ensuring good electrical conductivity of, for example, a surface resistance value of 10 3 ⁇ / ⁇ or less. It is preferable that On the other hand, if the thickness of the transparent conductive film becomes too large, the effect of suppressing the bone appearance phenomenon may be reduced, and there may be a disadvantage that the transparency is lowered. Therefore, the upper limit of the thickness of the transparent conductive film is 100 nm or less. Preferably, it is 60 nm or less, more preferably 50 nm or less, and particularly preferably 40 nm or less.
  • the method for forming the transparent conductive film is not particularly limited, and a conventionally known method can be used. Specifically, for example, a dry process such as a vacuum deposition method, a sputtering method, or an ion plating method, or a wet coating method (specifically, the method described above) can be used.
  • the transparent conductive film formed as described above may be patterned.
  • the patterning can form various patterns depending on the application to which the transparent conductive film is applied.
  • the pattern portion and the non-pattern portion are formed by patterning the transparent conductive film. Examples of the shape of the pattern portion include a stripe shape, a lattice shape, and a combination pattern thereof.
  • the patterning of the transparent conductive film is generally performed by etching.
  • a transparent conductive film is patterned by forming a patterned etching resist film on the transparent conductive film by a photolithography method, a laser exposure method, or a printing method and then performing an etching process.
  • etching solution a conventionally known one is used.
  • inorganic acids such as hydrogen chloride, hydrogen bromide, sulfuric acid, nitric acid and phosphoric acid, organic acids such as acetic acid, and mixtures thereof, and aqueous solutions thereof are used.
  • Examples of other functional layers include an easy adhesion layer, a hard coat layer, a high refractive index layer, a low refractive index layer, and the like, and these functional layers can be provided alone or in combination.
  • the easy-adhesion layer provided between the base film and the transparent conductive film the same easy-adhesion layer as described above can be used.
  • an easy-adhesion layer having a refractive index in the range of 1.55 to 1.60 is used.
  • the thickness is preferably in the range of 10 to 200 nm.
  • the hard coat layer is preferably a layer obtained by applying and curing the active energy ray-curable composition containing the above-described active energy ray-curable resin by a wet coating method.
  • the refractive index of the hard coat layer is suitably in the range of 1.48 to 1.55, preferably in the range of 1.50 to 1.53.
  • the high refractive index layer is composed of metal oxide fine particles having a refractive index of 1.65 or more (titanium oxide, zirconium oxide, zinc oxide, tin oxide, antimony oxide, cerium oxide, iron oxide, zinc antimonate, tin oxide doped indium oxide ( ITO), antimony-doped tin oxide (ATO), phosphorus-doped tin oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide, fluorine-doped tin oxide, etc.) and an active energy ray-curable composition containing the aforementioned active energy ray-curable resin
  • the layer is preferably applied and cured by a wet coating method.
  • the refractive index (n1) of the high refractive index layer is preferably in the range of 1.61 to 1.80, and more preferably in the range of 1.63 to 1.75.
  • the thickness (d1) of the high refractive index layer is preferably in the range of 30 to 100 nm, more preferably in the range of 40 to 95 nm.
  • the low refractive index layer may be the same as the low refractive index layer described above.
  • a SiO 2 film formed by a vapor deposition method is also preferably used as the low refractive index layer.
  • the refractive index (n2) of the low refractive index layer is preferably in the range of 1.30 to 1.50, more preferably in the range of 1.33 to 1.48.
  • the thickness (d2) of the low refractive index layer is more preferably in the range of 5 to 70 nm, more preferably in the range of 7 to 50 nm, and particularly preferably in the range of 10 to 45 nm.
  • the total of the optical thickness of the high refractive index layer and the optical thickness of the low refractive index layer is preferably ⁇ / 4.
  • the optical thickness is the product of the refractive index and the thickness, and ⁇ is 380 to 780 nm which is the wavelength range of the visible light region.
  • the unit of thickness is nm.
  • the total of the optical thickness of the high refractive index layer and the optical thickness of the low refractive index layer preferably satisfies the following relational expression 4. (380 nm / 4) ⁇ (n1 ⁇ d1) + (n2 ⁇ d2) ⁇ (780 nm / 4) 95 nm ⁇ (n1 ⁇ d1) + (n2 ⁇ d2) ⁇ 195 nm (Formula 4).
  • a hard coat layer, a high refractive index layer, and a low refractive index layer which are layers obtained by applying and curing an active energy ray curable composition by a wet coating method between a base film and a transparent conductive film
  • oligomer precipitation from the base film can be prevented.
  • the transparent conductive film of the present invention is preferably used for a resistive film type or a capacitive type touch panel. In particular, it is preferably used for a capacitive touch panel.
  • the resistive film type touch panel generally has a configuration in which transparent conductive films of two transparent conductive films are arranged to face each other with a spacer interposed therebetween.
  • FIG. 1 is a schematic cross-sectional view of an example of a display device provided with a resistive touch panel using the transparent conductive film of the present invention.
  • FIG. 1 shows an embodiment in which the transparent conductive film 11 of the present invention is used as a lower electrode.
  • the transparent conductive film 12 constituting the upper electrode and the transparent conductive film 11 constituting the lower electrode constitute a touch panel 21, and the touch panel 21 is disposed on the display panel 31 via the air layer 9.
  • the touch panel 21 has the transparent conductive film 2 on one surface of the base film 1 and only one layer of the low refractive index layer 4 on the other surface of the base film 1 through the easy adhesion layer 3.
  • a conductive film 11 and a transparent conductive film 12 having a transparent conductive film 6 on one surface of the substrate film 5 and a functional layer 7 on the other surface of the substrate film 5 are interposed via a spacer 8.
  • the transparent conductive films 2 and 6 are arranged so as to face each other.
  • An air layer 9 exists on the low refractive index layer 4 side of the transparent conductive film 11 of the present invention.
  • the presence of the air layer 9 increases the reflectivity at the interface with the transparent conductive film 11, reduces the transmittance of light emitted from the display panel, and lowers the display quality (brightness and visibility) as a display device.
  • the transparent conductive film of the present invention interface reflection is reduced, and good display quality can be ensured.
  • Examples of the display panel 31 include a liquid crystal display panel and an organic EL display panel.
  • a hard coat layer, an antiglare layer, an antireflection layer, an antifouling layer, or the like is used as the functional layer of the transparent conductive film 12.
  • FIGS. 2 and 3 are schematic cross-sectional views of an example of a display device provided with a capacitive touch panel using the transparent conductive film of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a display device including a capacitive touch panel in which an X electrode and a Y electrode are arranged via an air layer.
  • the X electrode is composed of the transparent conductive film 13 of the present invention
  • the Y electrode is composed of the transparent conductive film 14 of the present invention
  • the two transparent conductive films 13 and 14 are arranged via the air layer 9.
  • a touch panel 22 is formed.
  • the touch panel 22 is disposed on the display panel 31 through the air layer 9.
  • the transparent conductive films 13 and 14 of the present invention constituting the X electrode and the Y electrode have the transparent conductive film 2 on one surface of the base film 1 and the easy adhesion layer 3 on the other surface of the base film 1. Only one layer of the low refractive index layer 4 is provided.
  • the X electrode and the Y electrode are formed by patterning the transparent conductive film 2 respectively.
  • the low refractive index layers 4 of the transparent conductive films 13 and 14 of the present invention are in contact with the air layer 9.
  • the transparent conductive films 13 and 14 may be joined by an adhesive layer (not shown).
  • the transparent conductive film 13 does not necessarily use the transparent conductive film of the present invention because the low refractive index layer does not contact the air layer.
  • FIG. 3 is a schematic cross-sectional view of a display device including a capacitive touch panel using a transparent conductive film in which an X electrode and a Y electrode are formed on one base film.
  • the transparent conductive film 2 of the transparent conductive film 15 of the present invention has a configuration in which a patterned transparent conductive film to be an X electrode and a patterned transparent conductive film to be a Y electrode are laminated via an insulating film. Become.
  • the transparent conductive film 15 of the present invention to be the touch panel 23 is disposed on the display panel 31 via the air layer 9, and the low refractive index layer 4 of the transparent conductive film 15 of the present invention is in contact with the air layer 9. ing.
  • a protective panel (a glass plate, an acrylic resin plate, etc.) (not shown) is usually provided on the touch surface side via an air layer or an adhesive layer (not shown). Are arranged.
  • the low refractive index layer side of the transparent conductive film of the present invention is connected to the display panel via an air layer. It is preferable to arrange so as to face each other.
  • the transparent conductive film of the present invention is incorporated not in the touch surface of the display device provided with the touch panel but in the inside. Since the transparent conductive film of the present invention is used inside a display device, it has a structure having only one low refractive index layer (having no hard coat layer or high refractive index layer) in terms of scratch resistance. enable.
  • Another application of the transparent conductive film of the present invention is an electromagnetic wave shielding member that shields electromagnetic waves generated from a liquid crystal display panel. That is, the transparent conductive film of the present invention is suitable for an electromagnetic wave shielding member.
  • FIG. 4 is a schematic cross-sectional view of an example of a display device provided with an electromagnetic wave shielding member using the transparent conductive film of the present invention.
  • the transparent conductive film 16 of the present invention which becomes the electromagnetic wave shielding member 24 is disposed on the display panel (liquid crystal display panel) 31 via the air layer 9, and the transparent conductive film 16 of the present invention.
  • the low refractive index layer 4 is in contact with the air layer 9.
  • the transparent conductive film 16 of the present invention has a transparent conductive film 2 on one side of the base film 1 and a low refractive index layer 4 on the other side of the base film 1 with an easy adhesion layer 3 interposed therebetween. Have only.
  • the touch panel 25 is disposed on the transparent conductive film 2 side of the transparent conductive film 16 of the present invention which becomes the electromagnetic wave shielding member 24.
  • the touch panel 25 is not particularly limited, and other types of touch panels (for example, an ultrasonic method, an electromagnetic induction method, etc.) other than the above-described resistance film type and capacitance type can also be used.
  • a resistive touch panel and a capacitive touch panel using the transparent conductive film of the present invention as described above are also preferably used.
  • a coating film (dry thickness of about 2 ⁇ m) formed by coating each coating composition of the easy adhesive layer and the low refractive index layer on a silicon wafer with a spin coater ), The refractive index at 633 nm was measured with a phase difference measuring device (Nikon Corporation: NPDM-1000) under a temperature condition of 25 ° C.
  • Thickness of the easy-adhesion layer A cross-section of the base film on which the easy-adhesion layer is laminated is cut into ultrathin sections, and TEM (transmission) is obtained by RuO4 staining, OsO4 staining, or staining ultrathin sectioning by double staining of both.
  • the cross-sectional structure is observed under the following conditions with a scanning electron microscope), and the thickness of the easy-adhesion layer is measured from the cross-sectional photograph. In addition, five places were measured and the average value was made into the thickness of an easily bonding layer.
  • Measurement device Transmission electron microscope (H-7100FA type, manufactured by Hitachi, Ltd.)
  • Measurement conditions Acceleration voltage 100kV -Sample preparation: frozen ultrathin section method-Magnification: 300,000 times.
  • the sample was cut into ultra-thin sections and observed with a transmission electron microscope (H-7100FA, manufactured by Hitachi) at an acceleration voltage of 100 kV (observed at a magnification of 100,000).
  • the thickness of the low refractive index layer is measured from the cross-sectional photograph.
  • five places were measured and the average value was made into the thickness of a low refractive index layer.
  • the luminous reflectance on the low refractive index layer side of the transparent conductive film is 1 in order not to reduce the transmittance of light emission from the display panel. It is preferably 0.0% or less, more preferably 0.9% or less, and particularly preferably 0.8% or less. When the luminous reflectance is greater than 1.0%, the transmittance decreases.
  • ⁇ Fluorene ring-containing polyester resin It is a polyester resin comprising a copolymer composition of the following carboxylic acid component and glycol component.
  • Carboxylic acid component Succinic acid 40mol% 5-Na sulfoisophthalic acid 10 mol%
  • Glycol component 9,9-bis [4- (2-hydroxyethoxy) phenyl] fluorene x mol% Ethylene glycol (50-x) mol%.
  • ⁇ Polyester resin 3> The following water-dispersible polyester resin 3 (naphthalene ring-containing polyester resin) having a refractive index of 1.58 was prepared.
  • ⁇ Naphthalene ring-containing polyester resin It is a polyester resin comprising a copolymer composition of the following carboxylic acid component and glycol component.
  • Carboxylic acid component terephthalic acid 35mol% 2,6-Naphthalenedicarboxylic acid 9 mol% 5-Na sulfoisophthalic acid 6 mol%
  • Glycol component ethylene glycol 49 mol% Diethylene glycol 1 mol%.
  • ⁇ Acrylic resins 1, 2> The following water-dispersible acrylic resin 1 having a refractive index of 1.54 and water-dispersible acrylic resin 2 having a refractive index of 1.52 were prepared.
  • particles contained in the easy adhesion layer Particles contained in the easy adhesion layer
  • Particle A colloidal silica having an average particle diameter of 190 nm
  • particle B colloidal silica having an average particle diameter of 80 nm
  • particle C colloidal silica having an average particle diameter of 30 nm.
  • the following easy-adhesion layer Z was laminated
  • the melamine-based cross-linking agent is a methylol-type melamine-based cross-linking agent (“Nicarac MW12LF” manufactured by Sanwa Chemical Co., Ltd.), and the melamine-based cross-linking agent refers to the above compound in the following examples and comparative examples.
  • the following easy-adhesion layer B is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 20 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 20 nm, and the refractive index of the easy adhesion layer was 1.64. This easy-adhesion layer satisfies the conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer C is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.62. This easy-adhesion layer satisfies the condition 1.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer D is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 30 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 30 nm, and the refractive index of the easy adhesion layer was 1.62. This easy-adhesion layer satisfies the conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer E is laminated so that the dry thickness is 90 nm on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.58. This easy-adhesion layer satisfies the condition 1.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer F is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 40 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 40 nm, and the refractive index of the easy adhesion layer was 1.58. This easy-adhesion layer satisfies the conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 6 except that the thickness of the easy adhesion layer F in Production Example 6 was changed to 20 nm.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 20 nm, and the refractive index of the easy adhesion layer was 1.58. This easy-adhesion layer satisfies the conditions 1 and 2.
  • the following easy-adhesion layer G is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.54. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 8 except that the thickness of the easy adhesion layer G in Production Example 8 was changed to 60 nm.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 60 nm, and the refractive index of the easy adhesion layer was 1.54. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 8, except that the thickness of the easy adhesion layer G in Production Example 8 was changed to 40 nm.
  • the thickness of the easy adhesion layer of the PET film with an easy adhesion layer obtained above was 40 nm, and the refractive index of the easy adhesion layer was 1.54. This easy adhesion layer satisfies the condition 2.
  • the following easy-adhesion layer E is laminated so that the dry thickness is 90 nm on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.52. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 11 except that the thickness of the easy adhesion layer H in Production Example 11 was changed to 60 nm.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 60 nm, and the refractive index of the easy adhesion layer was 1.52. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • the following easy-adhesion layer I is laminated to a dry thickness of 20 nm on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 20 nm, and the refractive index of the easy adhesion layer was 1.52. This easy adhesion layer satisfies the condition 2.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer J is laminated to a dry thickness of 90 nm on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.52. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • the following easy adhesion layer K is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.52. This easy-adhesion layer does not satisfy both conditions 1 and 2.
  • the easy-adhesion layer Z was laminated
  • This easy-adhesion layer F is an easy-adhesion layer that does not contain particles.
  • the following easy-adhesion layer L is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.60. This easy-adhesion layer satisfies the condition 1.
  • the easy-adhesion layer Z was laminated
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 17-1, except that the dry thickness of the easy adhesion layer L was changed to 120 nm in Production Example 17-1.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 120 nm, and the refractive index of the easy adhesion layer was 1.60. This easy-adhesion layer satisfies the condition 1.
  • a PET film with an easy adhesion layer was obtained in the same manner as in Production Example 17-1, except that the dry thickness of the easy adhesion layer L was changed to 120 nm in Production Example 17-1.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 150 nm, and the refractive index of the easy adhesion layer was 1.60. This easy-adhesion layer satisfies the condition 1.
  • the following easy-adhesion layer L is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.65. This easy-adhesion layer satisfies the condition 1.
  • the easy-adhesion layer Z was laminated
  • the following easy-adhesion layer L is laminated on one surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m so that the dry thickness is 90 nm.
  • PET film polyethylene terephthalate film
  • a PET film with an adhesive layer was obtained.
  • the thickness of the easy adhesion layer of the PET film with the easy adhesion layer obtained above was 90 nm, and the refractive index of the easy adhesion layer was 1.66. This easy-adhesion layer satisfies the condition 1.
  • the easy-adhesion layer Z was laminated
  • One surface (low refractive index layer lamination surface) of a polyethylene terephthalate film (PET film) having a refractive index of 1.65 and a thickness of 100 ⁇ m has a high active energy ray curability (ultraviolet ray curability) described below instead of an easy adhesion layer.
  • the refractive index layer was laminated to a dry thickness of 90 nm and irradiated with ultraviolet rays to obtain a high refractive index layer laminated PET film.
  • the thickness of the high refractive index layer of the high refractive index layer laminated PET film obtained above was 90 nm, and the refractive index of the high refractive index layer was 1.65.
  • the easy-adhesion layer Z was laminated
  • Example 1 to 33 and Comparative Examples 1 to 25 Transparent conductive films of Examples 1 to 33 and Comparative Examples 1 to 25 were prepared in the following manner.
  • low refractive index layer A and low refractive index are formed on the surface of one easy adhesive layer (the easy adhesive layer on the low refractive index layer lamination side) of the PET film with an easy adhesive layer obtained in Production Examples 1 to 19 above.
  • Layer B, low refractive index layer C or low refractive index layer D was formed.
  • the low refractive index layer C was formed on the high refractive index layer of the high refractive index layer laminated PET film obtained in Production Example 20.
  • Tables 1 to 3 show combinations of the PET film with an easy adhesion layer and the low refractive index layer.
  • the following hard coat layer, high refractive index layer, SiO2 film, and transparent conductive film are laminated in this order on the surface of the other easy adhesive layer (the easy adhesive layer on the transparent conductive layer side) of the PET film with an easy adhesive layer.
  • a transparent conductive film was produced.
  • Active energy ray-curable resin containing dipentaerythritol hexaacrylate and urethane acrylate in a mass ratio of 1: 3
  • Active energy ray-curable resin 47 parts by mass, hollow silica (ELECOM-P5024 manufactured by JGC Catalysts & Chemicals Co., Ltd.) in a solid content of 50 parts by mass 3 parts by mass of a polysiloxane compound having an ethylenically unsaturated group (“X-22-164C” manufactured by Shin-Etsu Chemical Co., Ltd.) and a photopolymerization initiator (“Irgacure” manufactured by Ciba Specialty Chemicals Co., Ltd.) (Registered trademark) 184 ”) 3 parts by mass was dispersed or dissolved in an organic solvent to prepare an active energy ray-curable composition cloth composition.
  • the refractive index of this composition was 1.35.
  • This composition was applied by a wet coating method (gravure coating method), dried at 90 ° C., and then cured by irradiation with ultraviolet rays of 400 mJ / cm 2 to form a low refractive index layer.
  • the thickness of the low refractive index layer was changed among 70 nm, 90 nm, 100 nm, 110 nm, and 130 nm.
  • a polysiloxane compound having an ethylenically unsaturated group (“X-22-164C” manufactured
  • the refractive index of this composition was 1.38.
  • This composition was applied by a wet coating method (gravure coating method), dried at 90 ° C., and then cured by irradiation with ultraviolet rays of 400 mJ / cm 2 to form a low refractive index layer. As shown in Tables 1 to 3, the thickness of the low refractive index layer (thickness after curing) was changed between 90 nm, 100 nm, and 110 nm.
  • active energy ray-curable resin containing dipentaerythritol hexaacrylate and urethane acrylate in
  • the refractive index of this composition was 1.40.
  • This composition was applied by a wet coating method (gravure coating method), dried at 90 ° C., and then cured by irradiation with ultraviolet rays of 400 mJ / cm 2 to form a low refractive index layer having a thickness of 100 nm.
  • This composition was applied by a wet coating method (gravure coating method), dried at 90 ° C., and then cured by irradiation with ultraviolet rays of 400 mJ / cm 2 to form a low refractive index layer having a thickness of 100 nm.
  • the refractive index of this composition was 1.50.
  • Active energy ray-curable resin dipentaerythritol hexaacrylate 10 parts by mass and urethane acrylate 27 parts by mass) 37 parts by mass, zirconium oxide (average particle size 20 nm), and photopolymerization initiator (Ciba Specialty Chemicals)
  • a composition was prepared by dispersing or dissolving 3 parts by mass of “Irgacure (registered trademark) 184” manufactured by Co., Ltd. in an organic solvent.
  • the refractive index of this composition was 1.70.
  • This composition was applied by a wet coating method (gravure coating method), dried at 90 ° C., and then cured by irradiation with ultraviolet rays of 400 mJ / cm 2 to form a high refractive index layer having a thickness of 80 nm.
  • SiO 2 film> A SiO 2 film (refractive index of 1.46) was laminated by sputtering so that the thickness was 10 nm.
  • Transparent conductive film An ITO film was laminated by a sputtering method so as to have a thickness of 30 nm and patterned (etching process) to form a transparent conductive film.
  • the easy-adhesion layer of the easy-adhesion layer PET film used in Comparative Examples 1 to 6, 8, and 9 does not satisfy both condition 1 and condition 2, and therefore has a high luminous reflectance.
  • the easy adhesion layer of the easy adhesion layer PET film of Comparative Example 5 contains particles, but the ratio (r / d) of the average particle diameter (r) of the particles to the thickness (d) of the easy adhesion layer is 0. Since it is less than .5, the slipperiness is inferior.
  • Easy-Adhesion Layer of Comparative Example 6 The easy-adhesion layer of the PET film is inferior in slipperiness because it does not contain particles.
  • the comparative example 7 using the PET film which does not have an easily bonding layer is inferior in adhesiveness and slipperiness.
  • Comparative Examples 10 to 14, 15, and 16 the refractive index of the low refractive index layer exceeds 1.42, and the luminous reflectance is large. Further, since the low refractive index layer D of Comparative Examples 10 to 14, 15 and 16 does not contain a polysiloxane compound having an ethylenically unsaturated group, it slips compared to the low refractive index layers A, B and C containing the same compound. The sex is inferior.
  • the easy-adhesion layer of the PET film of Comparative Example 14 does not contain particles and uses a low refractive index layer D that does not contain a polysiloxane compound having an ethylenically unsaturated group, slipperiness is achieved. Inferior. From these results, it can be seen that good slipperiness can be obtained when the easy-adhesion layer contains particles of an appropriate size and the low refractive index layer contains a polysiloxane compound having an ethylenically unsaturated group.
  • Comparative Examples 21 to 24 have a high luminous reflectance because the thickness of the low refractive index layer exceeds 120 nm.
  • Comparative Example 25 is provided with an active energy ray-curable high refractive index layer in place of the easy-adhesion layer, but has poor adhesion to the substrate film.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Position Input By Displaying (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

L'invention fournit un film conducteur transparent de faible coût, et dont les propriétés anti-réflexion sont satisfaisantes. Plus précisément, l'invention concerne un film conducteur transparent qui possède une pellicule conductrice transparente, sur une face d'un film de base d'indice de réfraction de 1,6 à 1,7, qui possède une épaisseur d'une couche de fiable indice de réfraction d'indice de réfraction inférieur ou égal à 1,42 et d'épaisseur de 80 à 120nm, sur l'autre face dudit film de base avec une couche très adhésive pour intermédiaire, et dont ladite couche très adhésive satisfait les conditions 1 et/ou 2 suivantes. Condition 1 : la valeur absolue de la différence entre l'indice de réfraction du film de base et celui de la couche très adhésive, est inférieure ou égale à 0,08; condition 2 : l'épaisseur de la couche très adhésive est supérieure ou égale à 5nm et inférieure à 50nm.
PCT/JP2013/050621 2012-01-31 2013-01-16 Film conducteur transparent, panneau tactile, et dispositif d'affichage Ceased WO2013114945A1 (fr)

Priority Applications (3)

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JP2013502330A JP5397824B1 (ja) 2012-01-31 2013-01-16 透明導電性フィルム、タッチパネルおよび表示装置
KR1020147020184A KR101524580B1 (ko) 2012-01-31 2013-01-16 투명 도전성 필름, 터치 패널 및 표시 장치
CN201380006513.7A CN104067352B (zh) 2012-01-31 2013-01-16 透明导电性膜、触摸面板及显示装置

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CN105814523A (zh) * 2013-12-02 2016-07-27 株式会社半导体能源研究所 触摸面板和制造触摸面板的方法
WO2016133081A1 (fr) * 2015-02-19 2016-08-25 積水化学工業株式会社 Film transmettant la lumière, électroconducteur, rouleau de ce film, et écran tactile doté de celui-ci
JP2016168736A (ja) * 2015-03-12 2016-09-23 リンテック株式会社 透明導電膜積層用フィルム、その製造方法および透明導電性フィルム
JP2019527152A (ja) * 2016-06-30 2019-09-26 コーロン インダストリーズ インク ポリエステル多層フィルム
CN113031427A (zh) * 2019-12-25 2021-06-25 西铁城时计株式会社 钟表和钟表的风挡的制造方法
JP2022126018A (ja) * 2021-02-18 2022-08-30 アイカ工業株式会社 反射防止フィルム及びその製造方法
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JP6611471B2 (ja) * 2015-05-27 2019-11-27 日東電工株式会社 透明導電性フィルム
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JP7685816B2 (ja) * 2018-05-11 2025-05-30 日東電工株式会社 粘着剤層、その製造方法、粘着シート、粘着剤層付光学フィルムおよび画像表示装置
WO2020162120A1 (fr) 2019-02-08 2020-08-13 東洋紡株式会社 Écran pliable et équipement terminal portable
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JP7435448B2 (ja) 2019-05-28 2024-02-21 東洋紡株式会社 積層フィルムとその用途
KR102815003B1 (ko) 2019-05-28 2025-05-30 도요보 가부시키가이샤 폴리에스테르 필름, 적층 필름 및 그 용도
WO2020241281A1 (fr) * 2019-05-28 2020-12-03 東洋紡株式会社 Film de polyester conducteur transparent et son utilisation
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JP7716172B2 (ja) * 2019-08-22 2025-07-31 日東電工株式会社 透明導電性フィルム
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WO2015041055A1 (fr) * 2013-09-20 2015-03-26 東レ株式会社 Film laminé et procédé de fabrication de ce dernier
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CN105005425A (zh) * 2014-04-21 2015-10-28 爱思开哈斯显示用薄膜有限公司 图案的不可见性优异的透明导电光学片
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WO2016133081A1 (fr) * 2015-02-19 2016-08-25 積水化学工業株式会社 Film transmettant la lumière, électroconducteur, rouleau de ce film, et écran tactile doté de celui-ci
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JP2019527152A (ja) * 2016-06-30 2019-09-26 コーロン インダストリーズ インク ポリエステル多層フィルム
CN113031427A (zh) * 2019-12-25 2021-06-25 西铁城时计株式会社 钟表和钟表的风挡的制造方法
JP2022126018A (ja) * 2021-02-18 2022-08-30 アイカ工業株式会社 反射防止フィルム及びその製造方法
JP7554134B2 (ja) 2021-02-18 2024-09-19 アイカ工業株式会社 反射防止フィルム及びその製造方法
WO2023285739A1 (fr) 2021-07-13 2023-01-19 Optitune Oy Gaines de polysiloxane à faible indice de réfraction et à film épais

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JP5397824B1 (ja) 2014-01-22
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KR20140093765A (ko) 2014-07-28
CN104067352B (zh) 2015-07-15
KR101524580B1 (ko) 2015-06-01

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