JPWO2019012733A1 - Hard coat film with optical adjustment layer for transparent conductive film, and transparent conductive film - Google Patents

Abstract

Even in a transparent conductive film provided with a transparent conductive layer, a hard coat film with an optical adjustment layer for a transparent conductive film which can obtain sufficient blocking resistance and can suppress a decrease in visibility. I will provide a. The hard coat film with an optical adjustment layer comprises a transparent substrate film made of an amorphous polymer, a hard coat layer sequentially laminated on one side of the transparent substrate film, and an optical adjustment layer thereon. The optical adjustment layer contains a plurality of particles, and the average particle diameter of the particles is larger than the average film thickness of the optical adjustment layer, and the average particle diameter r1 and the average film thickness d1 are 50 nm ≦ (r1− d1) ≦ 1900 nm. Arithmetic mean roughness Ra in the specific part of the surface of the optical adjustment layer excluding the convex part formed by the particles is in the range of 0.3 nm to 20 nm.

Description

  The present invention relates to a hard coat film with an optical adjustment layer for a transparent conductive film using a transparent film as a substrate, and a transparent conductive film.

  Conventionally, a touch panel such as a capacitive type has been widely used as a device that can input information by touching a display screen, such as a smartphone or a tablet terminal. Here, as a transparent conductive film for a touch panel, one in which indium tin oxide (ITO) is laminated as a transparent conductive layer on a substrate film by a method such as vapor deposition or sputtering is generally used. (See, for example, Patent Document 1).

  And although the polyethylene terephthalate film which is a crystalline polymer film with large birefringence was used as a substrate of a transparent conductive film, for example, when operating a mobile terminal through sunglasses, it is polarized. Due to the problem of the occurrence of uneven interference due to the use of sunglasses, it has been proposed to use an amorphous polymer film with low birefringence as a substrate.

  However, although the generation of the above-mentioned interference fringes was eliminated by the transparent conductive film based on the amorphous polymer film, the amorphous polymer film has a scratch on the surface of the film as compared with the crystalline polymer film. There is a drawback that it is easy to occur. In addition, the amorphous polymer film has a defect that it is more easily cracked than the crystalline polymer film, and therefore, there is a problem that the film adheres to a smooth surface such as a transport roll at the time of transport of the film, resulting in wrinkles and cracking. Then, the hard coat film for transparent conductive films which provided the hard coat layer in one side or both sides of an amorphous polymer film was considered. However, in this case, when the hard coat film is wound into a roll, there is a blocking problem in which the back face of the base of the overlapping hard coat film and the hard coat layer or the hard coat layers adhere to each other. Therefore, a hard coat layer containing particles of 1 to 5 μm is provided on the non-crystalline polymer film, and irregularities are formed on the surface of the hard coat layer and the ITO layer (transparent conductive layer) thereon and the like. It has been proposed to improve -blocking) (see, for example, Patent Documents 2 and 3).

Japanese Patent Application Laid-Open No. 7-68690 JP, 2013-107349, A JP, 2013-243115, A

  However, when a hard coat layer containing particles of 1 to 5 μm in size is provided on the non-crystalline polymer film as a base so that unevenness is formed on the surface of the ITO layer (transparent conductive layer) etc. Depending on the thickness of the coated layer, the ITO layer (transparent conductive layer) on the coated layer, etc., the blocking resistance may be insufficient at particle sizes of 1 to 2 μm, and the visibility may be reduced if the particle size is larger than 2 μm. there were.

  The present invention can obtain sufficient blocking resistance even in a transparent conductive film provided with a transparent conductive layer by vapor deposition, sputtering method or the like, and can suppress a decrease in visibility. An object of the present invention is to provide a hard coat film with an optical adjustment layer for a film, and a transparent conductive film using the hard coat film with the optical adjustment layer.

The hard coat film with an optical adjustment layer for a transparent conductive film according to the present invention, and the transparent conductive film have the following constitution in order to achieve the above object. That is,
A hard coat film with an optical adjustment layer for a transparent conductive film according to the present invention comprises a transparent base film made of an amorphous polymer, a hard coat layer sequentially laminated on at least one surface of the transparent base film, And an optical adjustment layer thereon. Here, the optical adjustment layer contains a plurality of particles, and the average particle diameter of the particles is larger than the average film thickness of the optical adjustment layer, and the average particle diameter r1 and the average film thickness d1 But,
50 nm ≦ (r1−d1) ≦ 1900 nm
In a relationship of And arithmetic mean roughness Ra in the specific part except the convex part formed of the said particle | grains of the surface of the said optical adjustment layer exists in the range of 0.3 nm-20 nm. Here, when the optical adjustment layer is composed of a plurality of layers (high refractive index layer + low refractive index layer), the average particle diameter r1 is the average of the entire particles (particles having an average particle diameter larger than the average film thickness d1). Although the particle diameter is used, the average film thickness d1 is the average film thickness of the whole when particles are put in both layers and when particles are put only in the high refractive index layer, and only in the low refractive index layer When particles are added, it is the average film thickness of the low refractive index layer (hereinafter the same).

  According to the hard coat film with an optical adjustment layer for this transparent conductive film, a plurality of particles are contained in the optical adjustment layer laminated on the hard coat layer. And the average particle diameter r1 of the particle | grains contained in the optical adjustment layer is larger than the average film thickness d1 of an optical adjustment layer, and the difference exists in the range of 50 nm-1900 nm. Moreover, arithmetic mean roughness Ra in the specific part except the convex part formed of particle | grains of the surface of an optical adjusting layer is 0.3 nm-20 nm. Thus, the difference between the average particle diameter of the particles contained in the optical adjustment layer and the average film thickness of the optical adjustment layer is 50 nm or more, and the arithmetic average roughness Ra at the specific part of the surface of the optical adjustment layer is 0.3 nm or more By setting it, sufficient blocking resistance can be acquired also in the transparent conductive film in which the transparent conductive layer was provided in the optical adjustment layer by vapor deposition, sputtering method, etc. after that. In addition, the difference between the average particle diameter of the particles contained in the optical adjustment layer and the average film thickness of the optical adjustment layer is 1900 nm or less, and the arithmetic average roughness Ra in the specific part of the surface of the optical adjustment layer is 20 nm or less Thus, the decrease in visibility can be suppressed also in the subsequent transparent conductive film.

The average particle diameter r1 of the particles contained in the optical adjustment layer is in the range of 100 nm to 2000 nm, and the average particle diameter r1 (nm) and the number N of the particles (pieces / mm ² ) are
199.03 exp (-0.002 r1) N N 367 3676.4 exp (-0.002 r1)
In a relationship of Here, the number N of particles refers to the number of particles having a height of 50 nm or more from the surface of the optical adjustment layer (the outermost surface when there are a plurality of optical adjustment layers) (hereinafter the same).

Further, an average film thickness d1 of the optical adjustment layer and an average particle diameter r1 of particles contained in the optical adjustment layer are as follows:
(D1 / r1) <0.5
In a relationship of

  In addition, the hard coat layer contains a plurality of particles, and the average particle diameter of the particles is smaller than the average film thickness of the hard coat layer, and the particles are unevenly distributed on the surface of the hard coat layer There is.

Further, an average film thickness d2 of the hard coat layer and an average particle size r2 of particles contained in the hard coat layer are
(D2 / r2)> 2
In a relationship of

Further, the valley side area of the surface of the optical adjustment layer is not more than 200,000 μm ² per 661780 μm ² . Here, the valley side area of the surface of the optical adjustment layer means the area of the surface of the optical adjustment layer which is 3 nm or more on the valley side from the average height of the optical adjustment layer of the portion where particles contained in the optical adjustment layer are not present. (Following, the same).

  The hard coat layer and the optical adjustment layer are provided on one side of the transparent base film, and a protective film is attached to the other side of the transparent base film so as to form an outermost layer. May be

  In addition, the hard coat layer and the optical adjustment layer are provided on both sides of the transparent substrate film, and a protective film is formed to form the outermost layer on any one side of the transparent substrate film. It may be pasted together.

  In the transparent conductive film according to the present invention, a transparent conductive layer is formed on the surface of the optical adjustment layer in the hard coat film with the optical adjustment layer.

  According to the hard coat film with an optical adjustment layer for a transparent conductive film according to the present invention, particles are contained in the optical adjustment layer, and the average particle diameter of the particles is 50 nm to the average film thickness of the optical adjustment layer A transparent conductive layer is provided thereafter by enlarging the area in the range of 1900 nm and setting the arithmetic average roughness Ra at a specific portion of the surface of the optical adjustment layer excluding the convex portion formed by the particles to 0.3 nm to 20 nm. Also in the transparent conductive film described above, sufficient blocking resistance can be obtained, and a decrease in visibility can be suppressed.

It is a cross-sectional schematic diagram of the hard coat film with an optical adjustment layer of 1st embodiment of this invention. Similarly, it is a figure which shows the relationship between the average particle diameter of particle | grains of an optical adjustment layer, and a number. It is a cross-sectional schematic diagram of the hard coat film with an optical adjustment layer of 2nd embodiment of this invention. It is a cross-sectional schematic diagram of the hard coat film with an optical adjustment layer of 3rd embodiment of this invention. It is a cross-sectional schematic diagram of the hard coat film with an optical adjustment layer of other embodiment of this invention. It is a cross-sectional schematic diagram of the hard coat film with an optical adjustment layer of further another embodiment of this invention.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the hard coat film with an optical adjustment layer for transparent conductive films which concerns on this invention, and a transparent conductive film is demonstrated based on drawing.

  1 to 2 show a first embodiment of the present invention. The code | symbol 1 in a figure shows the hard coat film with an optical adjustment layer used for a transparent conductive film. 2 shows a transparent base film. 3 shows a hard coat layer. 4 shows an optical adjustment layer.

The hard coat film 1 with an optical adjustment layer comprises a transparent substrate film 2 and a hard coat layer 3 sequentially laminated on at least one surface (in the illustrated embodiment, one surface) of the transparent substrate film 2 and And an optical adjustment layer 4 thereon.
Here, the optical adjustment layer 4 contains a plurality of particles 4a, 4a, and the average particle diameter of the particles 4a, 4a is larger than the average film thickness of the optical adjustment layer 4, and the average particle diameter r1 The average film thickness d1 is
50 nm ≦ (r1−d1) ≦ 1900 nm
In a relationship of That is, the average particle diameter r1 is 50 nm to 1900 nm larger than the average film thickness d1. And arithmetic mean roughness Ra in specific part except the convex part formed of the said particle 4a contained in the optical adjustment layer 4 of the surface of the optical adjustment layer 4 is 0.3 nm-20 nm (more preferably, 0.3 nm to 10 nm).

  Therefore, a transparent conductive film (not shown) is obtained by forming a transparent conductive layer on the surface of the optical adjustment layer 4 in the hard coat film 1 with the optical adjustment layer.

  According to the hard coat film 1 with the optical adjustment layer, the optical adjustment layer 4 laminated on the hard coat layer 3 contains a plurality of particles 4 a and 4 a. The average particle diameter r1 of the particles 4a contained in the optical adjustment layer 4 is larger than the average film thickness d1 of the optical adjustment layer 4, and the difference is in the range of 50 nm to 1900 nm. Moreover, arithmetic mean roughness Ra in the specific part except the convex part formed of particle | grains 4a of the surface of the optical adjustment layer 4 becomes the range of 0.3 nm-20 nm. The difference between the average particle diameter r1 of the particles 4a contained in the optical adjustment layer 4 and the average film thickness d1 of the optical adjustment layer 4 is 50 nm or more, and the arithmetic average roughness Ra at the specific part of the surface of the optical adjustment layer 4 is By setting the thickness to 0.3 nm or more, sufficient blocking resistance can be obtained even in the transparent conductive film in which the transparent conductive layer is provided on the optical adjustment layer 4 by evaporation, sputtering or the like. That is, not only the hard coat film 1 with the optical adjustment layer but also the transparent conductivity after that is formed by the two types of convex portions formed by the particles 4 a and the convex portions 4 b forming the arithmetic mean roughness of the specific portion. Also in the case of the sexing film, the blocking resistance is developed. In addition, the difference between the average particle diameter r1 of the particles 4a contained in the optical adjustment layer 4 and the average film thickness d1 of the optical adjustment layer 4 is 1900 nm or less, and the arithmetic average roughness at the specific portion of the surface of the optical adjustment layer 4 By setting Ra to 20 nm or less, a decrease in visibility can be suppressed even in the subsequent transparent conductive film.

  Thus, the particles 4a are contained in the optical adjustment layer 4, the average particle diameter of the particles 4a is increased in the range of 50 nm to 1900 nm with respect to the average film thickness of the optical adjustment layer 4, and the surface of the optical adjustment layer 4 is specified By setting the arithmetic average roughness Ra in a portion to 0.3 nm to 20 nm, sufficient blocking resistance can be obtained even in a transparent conductive film provided with a transparent conductive layer thereafter, and visibility Can reduce the

  In addition, although the hard coat film 1 with the optical adjustment layer for transparent conductive films of this invention can be used suitably for capacitive touch panels, its application is limited to the said touch panels is not.

  Specifically, the transparent substrate film 2 is made of an amorphous polymer. The non-crystalline polymer is preferably an amorphous olefin having an alicyclic structure, but is not limited thereto. Examples of amorphous olefins include cycloolefin polymers and cycloolefin copolymers. The material of the transparent substrate film 2 may be polycarbonate, triacetyl cellulose, polyimide or the like. The thickness of the transparent substrate film 2 is preferably 10 μm to 500 μm, more preferably 10 μm to 200 μm, and still more preferably 20 μm to 100 μm. In addition, the adhesion to the laminated hard coat layer 3 is improved by pre-treating the surface of the transparent substrate film 2 with physical treatments such as coating of an easy adhesion layer and corona discharge treatment. be able to.

  The average thickness of the hard coat layer 3 is preferably in the range of 0.5 μm to 10.0 μm, and more preferably in the range of 0.75 μm to 5.0 μm, in order to obtain hard coat properties. If the film thickness is less than 0.5 μm, the hardness of the hard coat layer 3 may be insufficient. If it exceeds 10.0 μm, the hard coat layer 3 or a layer thereon may be cracked or wound up. Not only there is a possibility that it becomes difficult, but also there is a possibility that optical characteristics such as transparency may deteriorate.

  Furthermore, in order to obtain the convex portion 4b of the specific portion of the optical adjustment layer (that is, the value of the arithmetic average roughness Ra in the specific portion), the surface of the hard coat layer 3 (that is, the side with the transparent substrate film 2) Arithmetic mean roughness Ra is preferably in the range of 2 nm to 20 nm, and more preferably 3 nm to 10 nm. If the arithmetic average roughness Ra of the surface of the hard coat layer 3 is less than 2 nm, the arithmetic average roughness Ra at the specific portion of the optical adjustment layer 4 after that may be less than 0.3 nm, and thus blocking resistance Sex is reduced. In addition, when the arithmetic average roughness Ra of the surface of the hard coat layer 3 is larger than 20 nm, optical properties such as transparency may be deteriorated.

  In the illustrated embodiment, the hard coat layer 3 contains a plurality of particles 3 a and 3 a, and the average particle size of the particles 3 a and 3 a is smaller than the average film thickness of the hard coat layer 3. And these particles 3a and 3a are unevenly distributed on the surface (that is, the surface opposite to the side with the transparent base film 2) of the hard coat layer 3. Therefore, convex portions 4b and 4b are formed on the surface of the optical adjustment layer 4 on the hard coat layer 3 so as to follow the convex portions on the surface due to the particles 3a and 3a unevenly distributed on the surface of the hard coat layer 3. The convex portions 4 b and 4 b are reflected in the value of the arithmetic average roughness Ra in a specific part of the surface of the optical adjustment layer 4.

  Specifically, the hard coat coating liquid for forming the hard coat layer 3 contains a binder, a plurality of particles 3 a and 3 a having an average particle size smaller than the average film thickness of the hard coat layer 3, and a solvent. Then, the hard coat coating solution is applied to the transparent substrate film 2, dried, and exposed to UV light (especially in the drying step) to cause the particles 3 a to be unevenly distributed on the surface of the hard coat layer 3. By using this method, it is possible to uniformly and efficiently obtain suitable surface roughness of the surface of the hard coat layer 3.

  Specifically, the hard coat coating liquid is a curable composition for forming the hard coat layer 3 and contains particles 3 a and a binder, and preferably is curable by ultraviolet light. Although the binder contained in a hard-coat coating liquid is not specifically limited, In order to provide a softness | flexibility, maintaining scratch resistance, a urethane acrylate can be used. The average particle diameter of the particles 3a contained in the hard coat coating solution is preferably in the range of 50 nm to 500 nm, more preferably in the range of 80 nm to 400 nm, and still more preferably in the range of 120 nm to 400 nm. . Then, although convex parts are formed on the surface by these particles 3a, 3a, if the average particle size is less than 50 nm, there is a possibility that sufficient convex parts can not be formed on the surface, and if the average particle size exceeds 500 nm There is a possibility that the haze may rise. Further, the average film thickness d2 of the hard coat layer 3 and the average particle size r2 of the particles 3a contained in the hard coat layer 3 preferably have a relationship of (d2 / r2)> 2 and within this range By doing this, it is possible to suppress the rise of the haze.

  The particles 3a are not particularly limited, but various inorganic and organic particles can be used. Examples of the particles 3a include particles made of silica, alumina, titania, acrylic resin, styrene-acrylic copolymer resin, styrene resin, urethane resin, epoxy resin, silicone resin, polyethylene resin, phenol resin, etc. However, it is not limited to these, You may combine 2 or more types.

  When using organic type particle | grains for the particle | grains 3a, what was synthesize | combined by the emulsion polymerization method using acrylic type particle | grains is preferable also in order to obtain the particle | grains of a desired average particle diameter.

  Moreover, when using inorganic type particle | grains for the particle | grains 3a, it is preferable to use the silica particle which made surface free energy small by surface treatment or surfactant. By thus reducing the surface free energy, the particles 3 a can be easily localized on the surface of the hard coat layer 3.

  In addition, additives such as dispersant, leveling agent, antifoaming agent, thixotropic agent, antifouling agent, antibacterial agent, flame retardant, anti-scratch agent, slip agent and the like are optionally added to the hard coat coating liquid. You may include in the range which does not affect performance.

  In addition, the hard coat coating solution may be diluted using an organic solvent from the viewpoint of adjusting the film thickness and the like. For example, alcohol-based organic solvents such as ethylene glycol monomethyl ether, propylene glycol monomethyl ether (PGM) and diethylene glycol monobutyl ether, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), cyclohexanone (anone), acetone and the like Ketone organic solvents, ester organic solvents such as butyl acetate, ethyl acetate, ethyl lactate, propylene glycol monomethyl ether acetate etc., aromatic organic solvents such as toluene, xylene etc., N-methylpyrrolidone, dimethyl Amide-based organic solvents such as acetamide and dimethylformamide can be used. And although these organic solvents may be used singly or in combination of two or more, the solubility parameter δ is preferably in the range of 8 to 11, and further, the solubility parameter δ Is more preferably in the range of 8-10.

  For coating, for example, reverse gravure coating method, direct gravure coating method, die coating method, bar coating method, wire bar coating method, roll coating method, spin coating method, dip coating method, spray coating method, knife coating method, kiss coating Although a coating method such as a method or various printing methods can be used, it is not limited to these methods.

  With regard to the drying step, if drying is too fast, aggregation and uneven distribution on the surface will be insufficient, so drying is preferably carried out at a temperature of 50 ° C to 120 ° C for about 10 seconds to 180 seconds, in particular at a drying temperature of 50 ° C. -80 ° C is preferred. The drying time is preferably as long as possible, but in view of productivity, it is more preferable to set the drying time to about 10 seconds to 120 seconds.

In the UV exposure step, after drying, the hard coat layer 3 is irradiated with ultraviolet light to be cured, whereby the aggregates of the particles 3 a can be immobilized on the surface of the hard coat layer 3. For irradiation with ultraviolet light, a high pressure mercury lamp, an electrodeless (microwave system) lamp, a xenon lamp, a metal halide lamp or any other ultraviolet irradiation device can be used, and an inert gas atmosphere such as nitrogen can be used if necessary. Ultraviolet irradiation may be performed. The irradiation amount of ultraviolet rays in the range of 50 to 800 mJ / cm ^2, preferably, it is in the range of 100~300mJ / cm ^2.

  The optical adjustment layer 4 is for reducing the phenomenon (that is, bone appearance) that the pattern can be seen visually due to the difference in reflectance between the portion where the patterned transparent conductive layer of the transparent conductive film exists and the portion where it does not exist. Is laminated on the hard coat layer 3. In order to reduce the appearance of the bone, the refractive index of the optical adjustment layer 4 is preferably between the refractive index of the transparent conductive layer and the refractive index of the hard coat layer 3. Therefore, the refractive index of the optical adjustment layer 4 is Is preferably in the range of 1.55 to 1.80. Moreover, although the average film thickness of this optical adjustment layer 4 changes with refractive index of the transparent base film 2, the hard-coat layer 3, and the optical adjustment layer 4, it is the range of 5 nm-500 nm, and the part in which a transparent conductive layer exists It is preferable to adjust to such a thickness that the difference in reflectance between the non-existent portion and the non-existent portion is as small as possible. If the film thickness of the optical adjustment layer 4 is less than 5 nm, there is a possibility that the particles 4a may fall off, and if the film thickness is larger than 500 nm, a sufficient blocking resistance may not be obtained after forming the transparent conductive layer or metal layer. There is.

  The average particle diameter of the particles 4 a contained in the optical adjustment layer 4 is preferably in the range of 100 nm to 2000 nm, more preferably 200 nm to 1500 nm, and still more preferably 400 nm to 1000 nm. By setting the average particle diameter of the particles 4a in this range, sufficient blocking resistance can be imparted even after film formation of a transparent conductive layer or a metal layer by vapor deposition or sputtering, and further, deterioration in visibility can be suppressed. . If the average particle diameter of the particles 4a is less than 100 nm, there is a possibility that sufficient blocking resistance can not be obtained after film formation of the transparent conductive layer or metal layer by vapor deposition or sputtering, and the average particle diameter of the particles 4a is more than 2000 nm If the size is large, the visibility may be reduced.

  The relationship between the average film thickness d1 of the optical adjustment layer 4 and the average particle diameter r1 of the particles 4a contained in the optical adjustment layer 4 is preferably (d1 / r1) <0.5. By setting this range, even if the average particle diameter r1 of the particles 4a is reduced, it is possible to form a convex having a sufficient height. The average particle diameter of the particles 4a can be adjusted from the film thickness of the optical adjustment layer 4, the film thickness of the transparent conductive layer, and the film thickness of the metal layer.

  Here, if (d1 / r1) <0.5, half or more of the particles 4a become convex portions, and there is a possibility that the particles 4a fall off due to rubbing or the like, but the convex portions 4b of the specific portion of the optical adjustment layer 4 As a result, the slipperiness is enhanced, and the detachment of the particles 4a due to rubbing or the like can be prevented.

The addition amount of the particles 4a varies depending on the average particle diameter of the particles 4a, and the average particle diameter r1 (nm) and the number N (particles / mm ² ) of the particles 4a are
199.03 exp (-0.002 r1) N N 367 3676.4 exp (-0.002 r1)
(The range of N is indicated by a diagonal line rising to the right in FIG. 2). And more preferably,
It is preferable that there is a relationship of 480.48 exp (-0.002 r1) exp N 2 2277 exp (-0.002 r1) (the range of N is indicated by a downward sloping diagonal line in Fig. 2).

Further, when a large undulation occurs on the surface of the optical adjustment layer 4 in a portion where the particles 4a contained in the optical adjustment layer 4 are not present, it becomes difficult to conduct when a conductive film such as ITO is provided. There is a case. Therefore, the area of the surface of the optical adjustment layer 4 (valley side area of the surface of the optical adjustment layer 4) which is on the valley side by 3 nm or more from the average height of the optical adjustment layer 4 in the portion where the particles 4a do not exist is 661780 μm is preferably ² per 200000Myuemu ² or less, and more preferably 150000Myuemu ² or less. That is, although it is preferable for the conduction of the transparent conductive film that the surface of the optical adjustment layer 4 in the portion where the particles 4a are not present is completely flat, there is a problem of blocking resistance. This conflicting problem can be solved.

  The optical adjustment layer 4 is obtained by applying the optical adjustment layer coating liquid to the surface of the hard coat layer 3, drying, and UV exposure. A well-known coating material (for example, Aica Kogyo Co., Ltd.) "AikaAITRON (AICAAITRON) Z-816-3L (product name)" whose refractive index is adjusted as an optical adjustment layer coating liquid And “Lioduras TYZ-A15-S (product name)” manufactured by Toyochem Co., Ltd. can be used. In order to obtain a high refractive index of 1.55 to 1.80, metal oxide particles may be included. The metal oxide particles include, for example, oxides such as titanium, zirconium, tin, zinc, silicon, niobium, aluminum, chromium, magnesium, germanium, gallium, antimony and platinum, and zirconium oxide and titanium oxide are particularly preferable. preferable. In addition, these oxides may be used in combination of two or more.

  As the material of the particles 4a contained in the optical adjustment layer 4, known inorganic or organic polydispersed or monodispersed particles (for example, “MX- manufactured by Soken Chemical & Engineering Co., Ltd.) 80H3wT (product name) "can be used.

  In addition, if necessary, additives such as dispersant, leveling agent, antifoaming agent, thixotropic agent, antifouling agent, antibacterial agent, flame retardant, anti-scratch agent, slip agent, etc. are optical within the range not affecting the performance. You may include in the adjustment layer coating liquid. In particular, in order to reduce the valley side area of the surface of the optical adjustment layer 4, it is preferable to adjust the surface tension reduction ability of the leveling agent.

Moreover, you may dilute an optical adjustment layer coating liquid using an organic solvent from a viewpoint of adjustment of a film thickness etc. For example, alcohol-based organic solvents such as ethylene glycol monomethyl ether, propylene glycol monomethyl ether (PGM) and diethylene glycol monobutyl ether, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), cyclohexanone (anone), acetone and the like Ketone organic solvents, ester organic solvents such as butyl acetate, ethyl acetate, ethyl lactate, propylene glycol monomethyl ether acetate etc., aromatic organic solvents such as toluene, xylene etc., N-methylpyrrolidone, dimethyl Amide-based organic solvents such as acetamide and dimethylformamide can be used. These organic solvents may be used alone or in combination of two or more, but the solubility parameter δ is preferably in the range of 8 to 11, and further, δ is 8 It is preferable to be in the range of ̃10. The surface tension of the organic solvent to be used is preferably in the range of 20 to 40 dyne / cm ² , and for the purpose of reducing the valley side area of the surface of the optical adjustment layer 4, the concentration increase of the coating film occurring in the drying step It is preferable to select the organic solvent type of the optical adjustment layer coating liquid so as to reduce the difference in surface tension.

  For coating, for example, reverse gravure coating method, direct gravure coating method, die coating method, bar coating method, wire bar coating method, roll coating method, spin coating method, dip coating method, spray coating method, knife coating method, kiss coating Although a coating method such as a method or various printing methods can be used, it is not limited to these methods.

  It is preferable also from a viewpoint of productivity to perform about 10 seconds-180 seconds at a temperature of 50 ° C-150 ° C about a drying process. If the temperature is in a range that does not affect the performance, the higher the viscosity, the lower the viscosity of the coated film surface before curing, the faster leveling (smoothing), and the valley side area of the surface of the optical adjustment layer 4 decreases. It is more preferable to set it as 80 degreeC-150 degreeC.

In the UV exposure step, after drying, the film can be fixed by irradiating the optical adjustment layer 4 with ultraviolet light and curing it. For irradiation with ultraviolet light, a high pressure mercury lamp, an electrodeless (microwave system) lamp, a xenon lamp, a metal halide lamp or any other ultraviolet irradiation device can be used, and an inert gas atmosphere such as nitrogen can be used if necessary. Ultraviolet irradiation may be performed. The irradiation amount of ultraviolet rays in the range of 50 to 800 mJ / cm ^2, preferably, it is in the range of 100~300mJ / cm ^2.

  FIG. 3 shows a second embodiment of the present invention. This embodiment is different from the first embodiment in that the hard coat layer is provided also on the other surface of the transparent substrate film 2, but the other is the same, and in the following, the same portion is used. Are given the same reference numerals and mainly explain different parts.

  The hard coat film 1 with the optical adjustment layer is a second hard coat on the other surface of the transparent substrate film 2 (that is, the surface opposite to the surface on which the hard coat layer 3 and the optical adjustment layer 4 are provided). Having a layer 5; The second hard coat layer 5 contains a plurality of particles 5a, 5a, and the particles 5a, 5a are the surface of the second hard coat layer 5 (that is, the side with the transparent substrate film 2) It is unevenly distributed on the opposite side). Thereby, scratch resistance and blocking resistance can be provided not only on one side of the hard coat film 1 with an optical adjustment layer but also on the other side. For this reason, even if an amorphous polymer film having a defect that it is easily broken and a scratch is easily generated on the transparent substrate film 2, it has an optical adjustment layer having sufficient hard coatability and sufficient blocking resistance. A hard coat film is obtained. Here, in order not to reduce the visibility, it is preferable to make the average particle diameter of the plurality of particles 5 a, 5 a smaller than the average film thickness of the second hard coat layer 5. The average particle diameter of the particles 5 a may be made larger than the average film thickness of the second hard coat layer 5 as necessary for the purpose of imparting the handling property more.

  FIG. 4 shows a third embodiment of the present invention. This embodiment is different from the second embodiment in that a protective film is provided, but the others are the same, and in the following, similar parts are given the same reference numerals and different parts are mainly Explain to.

  In the hard coat film 1 with the optical adjustment layer, the hard coat layer 3 and the optical adjustment layer 4 are provided on one side of the transparent substrate film 2, and the other side of the transparent substrate film 2 is A protective film 6 is attached to form an outer layer. In detail, the hard coat film 1 with the optical adjustment layer is the hard coat film with the optical adjustment layer of the second embodiment as the hard coat film body 1 a with the optical adjustment layer, and the hard coat film with the optical adjustment layer In the main body 1a, on the surface of the second hard coat layer 5 which is the other surface side of the transparent base film 2, the protective film 6 composed of the transparent base film 6a for protective film and the adhesive layer 6b It is pasted together using 6b.

  As described above, by providing the protective film 6 on the hard coat film 1 with the optical adjustment layer, the workability can be improved even when the transparent base film 2 is very thin, etc., and dirt and the like can be prevented. .

  The material for forming the protective film 6 is not particularly limited, but from the viewpoint of controlling the curl during the heat treatment step and after the heat treatment step, a material having a heat shrinkage ratio and a linear expansion coefficient similar to that of the hard coat film body 1a with the optical adjustment layer preferable.

  The present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the plurality of particles 4a, 4a contained in the optical adjustment layer 4 may have different diameters as shown in FIG. The same is true for the particles 3 a and 3 a contained in the hard coat layer 3.

  Further, the optical adjustment layer 4 may be a multilayer of two or more layers, such as a high refractive index layer and a low refractive index layer, instead of one layer. In that case, the refractive index of the optical adjustment layer on the hard coat layer 3 side is a high refractive index of 1.55 to 1.80, and the refractive index of the optical adjustment layer on the side on which the transparent conductive layer is laminated is 1.50 or less By setting the refractive index to be low, it is possible to suitably reduce the appearance of bones. And although particle 4a contained in an optical adjustment layer may be contained in which layer and may be contained in two or more layers, in the optical adjustment layer in the side farthest from transparent substrate film 2 Preferably, it is included.

  Further, to make the hard coat layer 3 contain a plurality of particles 3 a and 3 a in order to set the arithmetic average roughness Ra in a specific part of the surface of the optical adjustment layer 4 to a predetermined range, the surface of the hard coat layer 3 (transparent Although the convex part was provided in the surface opposite to the side with the base film 2 and the convex part was reflected on the surface of the optical adjustment layer, it is a particle as a method of providing a convex part on the surface of this hard coat layer 3 Instead of using 3a, a method of forming a convex portion by phase separation of two or more kinds of materials, or a method of forming a convex portion by embossing may be adopted (FIG. 6). Refer to convex part 3b shown).

  In addition, the hard coat film 1 with the optical adjustment layer is provided with the hard coat layer 3 and the optical adjustment layer 4 on one side of the transparent substrate film 2, but the hard coat on both sides of the transparent substrate film 2 A layer 3 and an optical adjustment layer 4 may be provided. And in this case, a protective film may be pasted together so that the outermost layer may be formed on any one side (that is, on the surface of any one optical adjustment layer 4) of transparent substrate film 2 .

  In the second and third illustrated embodiments, the second hard coat layer 5 contains the particles 5a, but the particles 5a may not be contained.

  Hereinafter, the present invention will be more specifically described by way of examples.

Example 1
As the transparent base film 2, "Zeonor Film ZF 16-100 (product name)" manufactured by Zeon Corporation (Nippon Zeon Co., Ltd.) was used. After subjecting one surface of this transparent substrate film 2 to corona treatment, the hard coat layer 3 was laminated on one surface thereof to prepare a hard coat film. Furthermore, the optical adjustment layer 4 was laminated on the surface of the hard coat layer 3 in the hard coat film to prepare a hard coat film with an optical adjustment layer.

(Preparation of Hard Coat Coating Liquid (1a))
In a disposable cup, "PC16-2291 (product name)" manufactured by DIC Corporation (DIC Corporation), butyl acetate and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare a hard coat coating solution (1a).

(Preparation of hard coat film (1A))
The hard coat coating solution (1a) is applied to the corona-treated side of the transparent substrate film 2 using a # 5 wire bar, and then dried at a temperature of 80 ° C. for 1.0 minutes, and then high pressure A hard coat film (1A) was produced by irradiating ultraviolet rays under the condition of a light amount of 200 mJ / cm ² using a mercury lamp.

(Preparation of Optical Adjustment Layer Coating Liquid (1b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L (product name) and Soken Chemical & Engineering Co., Ltd. manufactured by Aika Kogyo Co., Ltd. The product "CHEMISNOW MX-80H3wT (product name)" and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (1b).

(Preparation of hard coat film (1B) with optical adjustment layer)
The optical adjustment layer coating liquid (1b) is applied to the surface of the hard coat layer 3 of the hard coat film (1A) using a # 3 wire bar, and then dried at a temperature of 80 ° C. for 1.0 minutes. Next, the film was placed in a container provided with an ultraviolet light transmitting window on the top, and the container was placed in a nitrogen atmosphere for 3 minutes. Thereafter, using a high pressure mercury lamp, ultraviolet rays were irradiated under the condition of a light amount of 200 mJ / cm ² to prepare a hard coat film (1B) with an optical adjustment layer.

Example 2
The coating liquid of the optical adjustment layer 4 of Example 1 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of Optical Adjustment Layer Coating Liquid (2b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L (product name) and Soken Chemical & Engineering Co., Ltd. manufactured by Aika Kogyo Co., Ltd. The product "CHEMISNOW MX-40 (product name)" and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (2b).

(Preparation of hard coat film (2B) with optical adjustment layer)
A hard coat film (2B) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (2b) was used.

Example 3
The coating liquid of the optical adjustment layer 4 of Example 1 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of Optical Adjustment Layer Coating Liquid (3b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L (product name) and Soken Chemical & Engineering Co., Ltd. manufactured by Aika Kogyo Co., Ltd. The product "CHEMISNOW MX-150 (product name)" and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (3b).

(Preparation of hard coat film (3B) with optical adjustment layer)
A hard coat film (3B) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (3b) was used.

Example 4
The coating liquid for the hard coat layer 3 of Example 1 was changed to prepare a hard coat film. Furthermore, the same optical adjustment layer 4 as in Example 1 was laminated on the surface of the hard coat layer 3 of the hard coat film to produce a hard coat film with an optical adjustment layer.

(Preparation of Hard Coat Coating Liquid (4a))
Dispo cup is mixed with hard coating agent "PC16-2291 (product name)" and "PC-16-9081 (product name)" made by DIC Corporation (DIC Corporation), butyl acetate and methyl ethyl ketone (MEK) in the following composition ratio The hard coat coating solution (4a) was prepared.

(Preparation of hard coat film (4A))
A hard coat film (4A) was produced in the same manner as the production of the hard coat film (1A) of Example 1 except that the hard coat coating solution (4a) was used.

(Preparation of hard coat film (4B) with optical adjustment layer)
A hard coat film (4A) was used, and otherwise the optical adjustment layer 4 was laminated in the same manner as in Example 1 to produce a hard coat film (4B) with an optical adjustment layer.

Example 5
The coating liquid of the optical adjustment layer 4 of Example 4 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of hard coat film (5B) with optical adjustment layer)
A hard coat film (5B) with an optical adjustment layer was produced in the same manner as in Example 4 except that the optical adjustment layer coating liquid (2b) was used.

Example 6
The coating liquid of the optical adjustment layer 4 of Example 4 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of hard coat film (6B) with optical adjustment layer)
A hard coat film (6B) with an optical adjustment layer was produced in the same manner as in Example 4 except that the optical adjustment layer coating liquid (3b) was used.

Example 7
The coating liquid for the hard coat layer 3 of Example 1 was changed to prepare a hard coat film. Furthermore, the same optical adjustment layer 4 as in Example 1 was laminated on the surface of the hard coat layer 3 of the hard coat film to produce a hard coat film with an optical adjustment layer.

(Preparation of Hard Coat Coating Liquid (7a))
Dispo cup made by Aica Kogyo Co., Ltd. “AICAAITRON Z-739L (product name)” and Toray Dow Corning Co., Ltd. made “8019 ADDITIVE (product name)” and methyl isobutyl ketone (MIBK) were mixed at the following composition ratio to prepare a hard coat coating liquid (7a).

(Preparation of hard coat film (7A))
A hard coat film (7A) was produced in the same manner as the production of the hard coat film (1A) of Example 1 except that the hard coat coating solution (7a) was used.

(Preparation of hard coat film (7B) with optical adjustment layer)
Using the hard coat film (7A), the optical adjustment layer 4 was laminated in the same manner as in Example 1 except for the above to prepare a hard coat film (7B) with an optical adjustment layer.

Example 8
The hard coat layer 3 and the optical adjustment layer 4 are formed on the surface (the other surface) of the transparent base film 2 of the hard coat film (1B) with an optical adjustment layer of Example 1 in the same procedure as in Example 1, A hard coat film (8B) with an optical adjustment layer was produced.

Example 9
The coating liquid of the optical adjustment layer 4 of Example 1 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of Optical Adjustment Layer Coating Liquid (9b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L (product name) and Soken Chemical & Engineering Co., Ltd. manufactured by Aika Kogyo Co., Ltd. The product "CHEMISNOW MX-80H3wT (product name)" and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (9b).

(Preparation of hard coat film (9B) with optical adjustment layer)
A hard coat film (9B) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (9b) was used.

Example 10
The coating liquid of the optical adjustment layer 4 of Example 1 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of Optical Adjustment Layer Coating Liquid (10b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L (product name) and Soken Chemical & Engineering Co., Ltd. manufactured by Aika Kogyo Co., Ltd. Chemisnow (CHEMISNOW) MX-80H3wT (product name) and methyl ethyl ketone (MEK) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (10b).

(Preparation of hard coat film (10B) with optical adjustment layer)
A hard coat film (10B) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (10b) was used.

Example 11
The hard coat film was produced by changing the coating solution of the hard coat layer 3 of Example 1 and the counts of the wire bar. Furthermore, the same optical adjustment layer 4 as in Example 1 was laminated on the surface of the hard coat layer 3 of the hard coat film to produce a hard coat film with an optical adjustment layer.

(Adjustment of hard coat coating liquid (11a))
Diso cup "UT-1147 / P55 (product name)" manufactured by Nippon Paint Automotive Coatings Co., Ltd. (Nippon Paint Automotive Coatings Co., Ltd.) and butyl acetate and methyl isobutyl ketone (MIBK) in the following composition ratio It mixed and adjusted the hard-coat coating liquid (11a).

(Preparation of hard coat film (11A))
A hard coat film is used in exactly the same manner as in the preparation of the hard coat film (1A) of Example 1 except that a hard coat coating liquid (11a) is used, and a # 7 wire bar is used to apply the coating liquid. (11A) was produced.

(Preparation of hard coat film (11B) with optical adjustment layer)
Using the hard coat film (11A), the optical adjustment layer 4 was laminated in the same manner as in Example 1 except the above to prepare a hard coat film (11B) with an optical adjustment layer.

Example 12
The coating solution of the hard coat layer 3 and the coating solution of the optical adjustment layer 4 of Example 1 were changed to prepare a hard coat film with an optical adjustment layer.

(Adjustment of hard coat coating liquid (12a))
Dispo cup is mixed with "AICAAITRON Z-735L-35 (product name)" manufactured by Aica Kogyo Co., Ltd. and propylene glycol monomethyl ether (PGM) at the following composition ratio The hard coat coating liquid (12a) was prepared.

(Preparation of hard coat film (12A))
A hard coat film (12A) was produced in the same manner as the production of the hard coat film (1A) of Example 1 except that the hard coat coating solution (12a) was used.

(Adjustment of optical adjustment layer coating liquid (12b))
Aika Kogyo Co., Ltd. (AICAAITRON) Z-816-3L Kai (product name) made of Aika Kogyo Co., Ltd., and Soken Chemical & Engineering Co., Ltd. .) “CHEMISNOW MX-80H3wT (product name)”, propylene glycol monomethyl ether (PGM) and “BYK-UV 3570 (product name)” manufactured by BYK Japan KK (product name) It mixed by the compounding ratio and adjusted the optical adjustment layer coating liquid (12b).

(Preparation of hard coat film (12B) with optical adjustment layer)
A hard coat film (12B) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (12b) was used.

Example 13
The coating liquid of the optical adjustment layer 4 of Example 12 was changed to prepare a hard coat film with an optical adjustment layer.

(Adjustment of optical adjustment layer coating liquid (13b))
Dispo cup made by Toyochem Co., Ltd. “LIODURAS TYZ-A15-S (product name)” and Soken Chemical & Engineering Co., Ltd. (CHEMISNOW) MX-80H3wT (product name) "and propylene glycol monomethyl ether (PGM) were mixed at the following composition ratio to prepare a coating liquid for optical adjustment layer (13b).

(Preparation of hard coat film (13B) with optical adjustment layer)
A hard coat film (13B) with an optical adjustment layer was produced in the same manner as in Example 12 except that the optical adjustment layer coating liquid (13b) was used.

Example 14
The drying conditions of the optical adjustment layer 4 of Example 13 were changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of hard coat film (14B) with optical adjustment layer)
A hard coat film (14B) with an optical adjustment layer was produced in the same manner as in Example 13 except that the drying temperature after the application of the optical adjustment layer was 100 ° C.

Example 15
The drying conditions of the optical adjustment layer 4 of Example 14 were changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of hard coat film (15B) with optical adjustment layer)
A hard coat film (15B) with an optical adjustment layer was produced in the same manner as in Example 14 except that the drying temperature after application of the optical adjustment layer was 130 ° C.

Example 16
The coating liquid for the optical adjustment layer 4 of Example 15 was changed to prepare a hard coat film with an optical adjustment layer.

(Adjustment of optical adjustment layer coating liquid (16b))
Dispo cup made by Toyochem Co., Ltd. “LIODURAS TYZ-A15-S (product name)” and Soken Chemical & Engineering Co., Ltd. (CHEMISNOW) MX-80H3wT (product name) "and propylene glycol monomethyl ether (PGM) were mixed at the following composition ratio to prepare an optical adjustment layer coating liquid (16b).

(Preparation of hard coat film (16B) with optical adjustment layer)
A hard coat film (16B) with an optical adjustment layer was produced in the same manner as in Example 15 except that the optical adjustment layer coating liquid (16b) was used.

Comparative Example 1
The coating liquid of the optical adjustment layer 4 of Example 1 was changed to prepare a hard coat film with an optical adjustment layer.

(Preparation of Optical Adjustment Layer Coating Liquid (Xb))
Optical adjustment by mixing “AICAAITRON Z-816-3L (product name)” and methyl ethyl ketone (MEK) manufactured by Aica Kogyo Co., Ltd. in a disposable cup in the following composition ratio The layer coating liquid (Xb) was prepared.

(Preparation of hard coat film (XB) with optical adjustment layer)
A hard coat film (XB) with an optical adjustment layer was produced in the same manner as in Example 1 except that the optical adjustment layer coating liquid (Xb) was used.

Example 17
An ITO target was used for the optical adjustment layer 4 side of the hard coat film (1B) with an optical adjustment layer of Example 1, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (17).

Example 18
The ITO target was used for the optical adjustment layer 4 side of the hard coat film (2B) with an optical adjustment layer of Example 2, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (18).

Example 19
The ITO target was used for the optical adjustment layer 4 side of the hard coat film (3B) with an optical adjustment layer of Example 3, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (19).

Example 20
An ITO target was used for the optical adjustment layer 4 side of the hard coat film (4B) with an optical adjustment layer of Example 4, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (20).

Example 21
The ITO target was used for the optical adjustment layer 4 side of the hard coat film (5B) with an optical adjustment layer of Example 5, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (21).

Example 22
An ITO target was used for the optical adjustment layer 4 side of the hard coat film with optical adjustment layer (6B) of Example 6, and sputtering deposition of 21 nm was performed to prepare a transparent conductive film (22).

Example 23
An ITO target is used on the side of the optical adjustment layer 4 of the hard coat film with optical adjustment layer (13B) of Example 13 and sputtering deposition of 21 nm is performed, and annealing is performed in an oven at 145 ° C. for 1 hour. (23) was produced.

Example 24
An ITO target is used on the optical adjustment layer 4 side of the hard coat film (14B) with an optical adjustment layer of Example 14, sputtering deposition of 21 nm is performed, and annealing is performed in an oven at 145 ° C. for 1 hour. (24) was produced.

Example 25
An ITO target is used on the optical adjustment layer 4 side of the hard coat film (15B) with an optical adjustment layer of Example 15, sputtering deposition of 21 nm is performed, and annealing is performed in an oven at 145 ° C. for 1 hour. (25) was produced.

Example 26
An ITO target is used on the optical adjustment layer 4 side of the hard coat film with optical adjustment layer (16B) of Example 16, 21 nm sputtering deposition is performed, and annealing is performed in an oven at 145 ° C. for 1 hour to obtain a transparent conductive film. (26) was produced.

Example 27
Using a copper target on the ITO layer side of the transparent conductive film (23) of Example 23, sputtering deposition was performed at 200 nm to produce a metal layer-carrying transparent conductive film (27).

Example 28
Using a copper target on the ITO layer side of the transparent conductive film (26) of Example 26, sputtering deposition was performed at 200 nm to produce a metal layer-carrying transparent conductive film (28).

<Evaluation result of hard coat film with optical adjustment layer>
The evaluation results of the hard coat film with the optical adjustment layer are shown in the following Tables 15 and 16.

  As apparent from Table 15 and Table 16, the hard coat film with an optical adjustment layer in Examples 1 to 16 includes particles 4 a having an average particle diameter larger than the average thickness of the optical adjustment layer 4 in the optical adjustment layer 4. The arithmetic average roughness Ra of a specific portion of the optical adjustment layer 4 is 0.3 nm to 10 nm, the Hz (haze) is low, the static friction coefficient is lower than 1, and no particle detachment occurs. The hard coat film with the optical adjustment layer has good visibility, and even when a transparent conductive layer is provided on the surface of the optical adjustment layer, sufficient blocking resistance can be obtained.

  Further, the hard coat film with an optical adjustment layer of Comparative Example 1 also has good visibility, but no particles are added to the optical adjustment layer 4 and the static friction coefficient exceeds 1. Therefore, when the transparent conductive layer is provided on the surface, sufficient blocking resistance can not be obtained.

<Evaluation result of transparent conductive film>
The evaluation results of the transparent conductive film are shown in the following Tables 17 and 18.

In Tables 17 and 18, the transparent conductive films in Examples 17 to 26 use the hard coat film with the optical adjustment layer of Examples 1 to 6 and Examples 13 to 16, but the Hz (haze) Low, low static friction coefficient. This transparent conductive film has good visibility and has sufficient blocking resistance even with a transparent conductive layer. Moreover, the valley side area of the surface of an optical adjusting layer in the transparent conductive films in Examples 23 to 26 is not more than 200,000 μm ² per 661780 μm ² , and the electric resistance value is also low.

<Evaluation result of transparent conductive film with metal layer>
The evaluation results of the metal layer-carrying transparent conductive film are shown in Table 19 below.

  In Table 19, the transparent conductive film with a metal layer in Examples 27 to 28 uses the transparent conductive films of Example 23 and Example 26, but the metal layer serving as an electrode is sufficiently resistant It has blocking properties.

<Evaluation method>
(Hz)
It measured by the method of JIS-K7136 using "Haze Meter NDH2000 (product name)" by Nippon Denshoku Industries Co., Ltd. (Nippon Denshoku Industries Co., Ltd.).

(Visibility)
The transmitted light of the three-wavelength fluorescent lamp was visually observed, and the case where the particles were hardly visible was ○, the particles were visible but the particles were not clearly visible, and △, the particles were clearly visible. The case was marked x.

(Blocking resistance)
Using “AUTOGRAPH AG-IS MS (AG-1kNIS) (product name)” manufactured by Shimadzu Corporation (Shimadzu Corporation), an area of 60 mm × 50 mm in the friction direction was subjected to a vertical load of 4.4 kg. The coefficient of static friction between the measurement surfaces of the sample was measured. The case where the static friction coefficient is 1 or more is taken as x, and the case where it is less than 1 is taken as o.

(Particle dropout)
500 reciprocation optical adjustment layer with a load of 500 g using “AB-301 COLOR FASTNESS RUBBING TESTER (product name)” manufactured by Tester Sangyo Co., Ltd. (Tester Sangyo Co., Ltd.) with a load of 500 g The surface was rubbed, and then the surface was checked using a "Microscope VHX-1000 (product name)" manufactured by Keyence Corporation for whether or not the particles 4a were detached. The thing without drop-off | omission of particle | grains 4a was made into (circle), and the thing with drop-off | omission of particle | grains 4 was made into x.

(Average film thickness of hard coat layer)
The average film thickness of the hard coat layer 3 was measured using “Filmetrics F20 film thickness measurement system (product name)” manufactured by Filmetrics, Inc.

(Average film thickness of optical adjustment layer)
The film thickness of the optical adjustment layer 4 was measured by the following procedure.
(1) Using "UV3600 (product name)" manufactured by Shimadzu Corporation (Shimadzu Corporation), the reflectance at a wavelength of 380 to 800 nm is measured to obtain a waveform.
(2) Information of the laminated film other than the film thickness of the optical adjustment layer 4 in optical simulation software [Configuration, refractive index of the transparent base film 2 (set to 1.52) and thickness, refraction of the hard coat layer 3 Rate (1.50), average film thickness (the measured value of the average film thickness of the above hard coat layer 3), and refractive index of the optical adjustment layer (Examples 13 to 16 1.60) Other Implementations An example is given as 1.62)).
(3) The average film thickness of the optical adjustment layer is a film thickness value when the waveform obtained by inputting an arbitrary film thickness into the optical adjustment layer of the optical simulation matches the waveform obtained in (1) I assume.
That is, after obtaining an interference waveform using "UV 3600 (product name)" manufactured by Shimadzu Corporation (Shimadzu Corporation), the film thickness value at which the measured interference waveform matches the calculated waveform by simulation is used as the average film of the optical adjustment layer It was thick.

(Average particle size of particles contained in hard coat layer)
The arithmetic mean value of the volume-based particle size distribution obtained by the laser diffraction / scattering method according to Japanese Industrial Standard JIS Z8825 based on International Standardization Mechanism Standard ISO 13320 was taken as the average particle size of the particles.

(Average particle size of particles contained in the optical adjustment layer)
The arithmetic mean value of the volume-based particle size distribution obtained by the laser diffraction / scattering method according to Japanese Industrial Standard JIS Z8825 based on International Standardization Mechanism Standard ISO 13320 was taken as the average particle size of the particles.

(Arithmetic mean roughness Ra of a specific part of the optical adjustment layer)
Non-contact surface / layer cross-sectional shape measurement system VertScan 2.0 (type: R5300GL-L-) manufactured by Mitsubishi Chemical Systems, Inc. (old company name: Ryoka Systems Inc.) A sample cut into 50 mm × 50 mm using A100-AC) (product name) was placed on a stage, and the surface shape was measured with a 10 × lens. Thereafter, the measurement data was observed, and the arithmetic average roughness Ra in the range of 50 μm × 50 μm was calculated in the specific portion excluding the convex portion formed by the particles 4 a included in the optical adjustment layer 4.

(Number of particles containing optical adjustment layer N)
Non-contact surface / layer cross-sectional shape measurement system VertScan 2.0 (type: R5300GL-L-) manufactured by Mitsubishi Chemical Systems, Inc. (old company name: Ryoka Systems Inc.) The sample cut into 50 mm × 50 mm was placed on the stage using A100-AC (product name), the surface shape was measured with a 10 × lens, and then particle analysis of the measurement data was performed to obtain 1 mm × 1 mm. The number of particles having a height of 50 nm or more from the surface of the optical adjustment layer 4 was counted.

(Valley side area of the surface of the optical adjustment layer)
Non-contact surface / layer cross-sectional shape measurement system VertScan 2.0 (type: R5300GL-L-) manufactured by Mitsubishi Chemical Systems, Inc. (old company name: Ryoka Systems Inc.) The sample cut into 50 mm × 50 mm was placed on a stage using “A100-AC (product name))”, and the surface shape was measured with a 5 × lens. After that, bearing analysis of the measurement data is performed, and the area (valley side area of the surface of the optical adjustment layer) on the valley side of 3 nm or more from the average height of the optical adjustment layer 4 of the portion where the particles 4a are not present is 661780 μm Calculated as per ² values.

(Electric resistance value of transparent conductive film)
It measured using "Loresta-GP (type: MCP-T610) (product name)" made by Mitsubishi Chemical Analytech Co., Ltd. (old company name: Mitsubishi Chemical Analytech Co., Ltd.) (old name: Mitsubishi Chemical Analytech Co., Ltd.).

  The hard coat film with an optical adjustment layer and the transparent conductive film described above are suitably used for a capacitive touch panel or the like.

1 hard coat film with optical adjustment layer 2 transparent substrate film 3 hard coat layer 3a particle 4 optical adjustment layer 4a particle 6 protective film

Claims (9)

Optical adjustment layer for transparent conductive film, comprising a transparent substrate film made of amorphous polymer, a hard coat layer sequentially laminated on at least one surface of the transparent substrate film, and an optical adjustment layer thereon Hard coated film with
The optical adjustment layer contains a plurality of particles, and the average particle diameter of the particles is larger than the average film thickness of the optical adjustment layer, and the average particle diameter r1 and the average film thickness d1 are
50 nm ≦ (r1−d1) ≦ 1900 nm
And also,
Hard coat with an optical adjustment layer for a transparent conductive film having an arithmetic average roughness Ra in the range of 0.3 nm to 20 nm in a specific part of the surface of the optical adjustment layer excluding the convex part formed by the particles the film. The average particle diameter r1 of the particles contained in the optical adjustment layer is in the range of 100 nm to 2000 nm, and the average particle diameter r1 (nm) and the number N (particles / mm ² ) of the particles are
199.03 exp (-0.002 r1) N N 367 3676.4 exp (-0.002 r1)
The hard coat film with an optical adjusting layer for a transparent conductive film according to claim 1, which is in the relation of An average film thickness d1 of the optical adjustment layer and an average particle diameter r1 of particles contained in the optical adjustment layer,
(D1 / r1) <0.5
The hard coat film with the optical adjustment layer for transparent conductive films of Claim 1 or 2 which has the relationship of (1).   The hard coat layer contains a plurality of particles, the average particle size of the particles is smaller than the average film thickness of the hard coat layer, and the particles are unevenly distributed on the surface of the hard coat layer. A hard coat film with an optical adjustment layer for a transparent conductive film according to any one of claims 1 to 3. The average film thickness d2 of the hard coat layer and the average particle size r2 of the particles contained in the hard coat layer are
(D2 / r2)> 2
The hard coat film with an optical adjustment layer for transparent conductive films according to claim 4, which is in the relation of The hard coat film with an optical adjusting layer for a transparent conductive film according to any one of claims 1 to 5, wherein the valley side area of the surface of the optical adjusting layer is not more than 200,000 μm ² per 661780 μm ² .   The hard coat layer and the optical adjustment layer are provided on one surface of the transparent substrate film, and a protective film is attached to the other surface of the transparent substrate film so as to form an outermost layer. A hard coat film with an optical adjustment layer for a transparent conductive film according to any one of claims 1 to 6.   The hard coat layer and the optical adjustment layer are provided on both sides of the transparent substrate film, and a protective film is attached to one side of the transparent substrate film so as to form an outermost layer. A hard coat film with an optical adjustment layer for a transparent conductive film according to any one of claims 1 to 6.   The transparent conductive film in which the transparent conductive layer is formed in the surface of the optical adjustment layer in the hard coat film with an optical adjustment layer of any one of Claims 1-8.

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