JP2008158204A - Antireflection film, molding die and manufacturing methods therefor, and optical member having the antireflection film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antireflection film which has an anti-reflectiveness and is restrained from deteriorating in the anti-reflectiveness due to adhesion of contaminants and to easily mass-produce the antireflection film inexpensively. <P>SOLUTION: The antireflection film has irregularities of 1 to 30 μm arithmetic mean roughness (Ra). A recessed secondary surface shape is formed of a recessed basic shape which may be connected with each other, the basic shape has 30 to 200 nm average depth and 80 to 400 nm average diameter and arrangement of the basic shapes at an antireflection surface is substantially irregular. A protruded secondary surface shape is formed of a protruded basic shape which may be connected with each other, the basic shape has 30 to 200 nm average height and 80 to 400 nm average diameter and arrangement of the basic shapes at the antireflection surface is substantially irregular. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antireflection film, a mold for molding, a production method thereof, and an optical member having the antireflection film.

The applicant filed for the technology to obtain an antireflection material with fine irregularities formed on the surface by attaching fine particles with a diameter of about several tens to several hundreds of nanometers on the surface of the transparent substrate using the alternating adsorption method. However, it is already known (Patent Document 1: Japanese Patent Laid-Open No. 2002-6126).
JP 2002-6126 A

  The technique described in Patent Document 1 is preferable in that an antireflection material having excellent antireflection properties can be obtained, and the techniques described in Patent Documents 2 and 3 are This is preferable in that an antireflection material having excellent antireflection properties can be produced easily and efficiently.

  The above-mentioned antireflection material is mainly provided with antireflection properties by a fine uneven shape existing on the surface. Therefore, when contaminants adhere to the surface of the antireflection material, the fine uneven shape on the adhesion surface changes or disappears, and the excellent antireflection property is deteriorated or the uniformity of the antireflection property is impaired. There was a case.

  The present invention has been made in view of the above problems, and by forming a predetermined antireflection surface in which a plurality of surface shapes are combined, it has excellent antireflection properties and changes in antireflection properties or unevenness. The present invention provides an antireflection film in which the formation of the antireflection film is suppressed, and a method for efficiently producing the antireflection film.

  The first antireflection film according to the present invention has a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, and the following concave secondary surface shape formed on the primary surface shape. It is characterized by having an antireflection surface with a composite contour shape on the surface.

  Concave secondary surface shape: consisting of concave basic shapes which may be interconnected, the basic shape having an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular.

  And the 2nd anti-reflective film by this invention is a primary surface shape which has the unevenness | corrugation whose arithmetic mean roughness (Ra) is 1 micrometer-30 micrometers, and the following convex secondary surface formed on this primary surface shape. It has an antireflection surface having a contour shape combined with the shape on the surface.

  Convex secondary surface shape: Consists of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the reflection of the basic shape Surface shape that is substantially irregular in arrangement on the prevention surface.

  The first antireflection film and the second antireflection film according to the present invention include, as a preferred embodiment, the primary surface shape having an average interval (Sm) between adjacent convexities of 3 μm to 200 μm. To do.

  The antireflection material according to the present invention comprises a base material and any one of the above antireflection films.

  The first mold for molding according to the present invention has a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, and the following convex secondary formed on the primary surface shape. It is characterized by having a contour shape combined with the surface shape on the shaping surface.

  Convex secondary surface shape: Consists of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the reflection of the basic shape Surface shape that is substantially irregular in arrangement on the prevention surface.

  Such a first mold for molding according to the present invention includes, as a preferred mode, a mold for molding in the form of a roller.

  The second mold for molding according to the present invention comprises a primary surface shape having irregularities with an arithmetic mean roughness (Ra) of 1 μm to 30 μm, and the following concave secondary surface formed on the primary surface shape. It has a contour shape combined with the shape on the shaping surface.

  Concave secondary surface shape: consisting of concave basic shapes which may be interconnected, the basic shape having an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular.

  Such a second mold for mold according to the present invention includes a film-shaped mold for mold as a preferred embodiment.

  According to the method for manufacturing a mold for roller-shaped form according to the present invention, a base layer is formed on the peripheral surface of the roller having the primary surface shape by using an alternate adsorption method, and then fine particles are formed on the base layer. And a step of forming a contour shape in which the primary surface shape and the secondary surface shape are combined on the circumferential surface of the roller.

  And the manufacturing method of the shaping type | mold of the film form by this invention applies the curable resin composition which can be shaped between a film base material and the shaping type | mold of said roller shape, The moldable curable resin composition is shaped by the roller-shaped mold for molding, and further includes a step of curing the molded product of the curable resin composition. Stuff.

  In addition, the first method for producing an antireflection film according to the present invention applies a moldable curable resin composition between a film substrate and the above-mentioned mold for molding in the form of a roller. The moldable curable resin composition is shaped by the roller-shaped molding material, and further includes a step of curing the molded product of the curable resin composition. .

  In addition, the second method for producing an antireflection film according to the present invention applies a moldable curable resin composition between a film substrate and the above-mentioned film-shaped mold for molding. A moldable curable resin composition is shaped by the above-described film-shaped mold for molding, and further includes a step of curing the molded product of the curable resin composition, It is.

  Furthermore, an optical member according to the present invention has any one of the above-described antireflection films.

  The antireflection film according to the present invention has a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, and a fine predetermined concave or convex secondary surface shape formed on the primary surface shape. Since the surface has an antireflection surface having a contour shape combined with the above, it exhibits excellent antireflection properties.

  Such an antireflection film according to the present invention is substantially irregular in the arrangement of the concave portions or convex portions according to microscopic observation of a microscope, and at the same time, the convex portions according to macroscopic observation with the naked eye. Or, since the arrangement of the recesses is substantially uniform and the recesses or projections are formed on the primary surface shape of the specific Ra, it is particularly excellent in the level of antireflection characteristics and the homogeneity thereof. is there. And even if various pollutants (for example, dirt by contact with a human finger, pollutants in the atmosphere, etc.) are attached, the deterioration of the antireflection property is suppressed.

  Such excellent antireflection properties mainly include (a) antireflection properties based on primary surface shapes, (b) antireflection properties based on concave secondary surface shapes, and (c) primary surface shapes and concave shapes. This is considered to be due to a synergistic action and effect with the antireflection property based on the contour shape combined with the secondary surface shape. In particular, (c) the contour shape is a composite of the primary surface shape and the concave secondary surface shape, so that the opening direction of the concave basic shape is multidirectional based on the primary surface shape in two or three dimensions. And the opening position of the concave basic shape is distributed based on the primary surface shape, and the opening direction and position of the concave basic shape change continuously based on the primary surface shape. This is considered to be due to the antireflection improvement effect.

  On the other hand, in the present invention, the deterioration of the antireflection property is suppressed even if the antireflection function based on the fine concave basic shape of the surface is deteriorated due to the adhesion of contaminants to the antireflection surface, the primary surface shape is reduced. The antireflection function based on this is thought to be due to the fact that the contaminants are still maintained at a high level even after adhering, so that the antireflection degradation of the entire antireflection film is suppressed.

  In the optical member having the antireflection film according to the present invention, light reflection is effectively prevented, and in the case of an optical member for information display such as a display device, the visibility is improved. In the case of a light receiving optical member such as a battery panel, the light utilization efficiency is improved.

  Such an antireflection film according to the present invention can be easily produced from a predetermined mold. That is, by preparing a shaping mold capable of forming the predetermined antireflection surface and using this shaping mold, a large number of optical members having a specific antireflection surface can be duplicated. According to such a method, an optical member having an antireflection structure having substantially the same shape can be manufactured from a single replication mold.

  Therefore, an optical member having a predetermined antireflection structure can be manufactured very stably, easily and at a low cost as compared with a method for producing a coating, vapor deposition or diffraction grating for each product.

  Furthermore, in the present invention, since a specific contour shape is formed on the roller peripheral surface and the target antireflection film is obtained by using the contour shape on the roller peripheral surface, the surface has a large surface area. Compared with the case where the contour shape is formed, it is easy to form a precise contour shape uniformly over the entire surface of the antireflection surface.

<Antireflection film (first antireflection film)>
A first antireflection film according to the present invention is an antireflection film having an antireflection surface having a contour shape in which a predetermined primary surface shape and a predetermined concave secondary surface shape are combined, and specifically, ,
An antireflection surface having a contour shape in which a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and the following concave secondary surface shape formed on the primary surface shape is combined on the surface. An antireflection film.

  Concave secondary surface shape: consisting of concave basic shapes which may be interconnected, the basic shape having an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular.

  FIG. 1 schematically shows a cross section of the first antireflection film according to the present invention.

  As shown in FIG. 1, the first antireflection film 10 according to the present invention includes a primary surface shape 11 in which both the size of the unevenness and the distance Z between adjacent convex portions are relatively large, and the primary surface shape. 11 having a contour shape formed by combining the concave secondary surface shape 12 formed on the surface 11. The first antireflection film 10 can be formed of a transparent material, preferably a transparent resin material, particularly preferably a transparent ultraviolet curable resin material.

In addition, the base material 13 may be formed in the surface in which the antireflection surface of the 1st antireflection film 10 is not formed as needed.

  The concave secondary surface shape 12 comprises a concave basic shape, and the concave basic shape is arranged substantially irregularly on the primary surface shape. FIG. 2 is a diagram schematically showing a basic shape constituting the concave portion of the present invention, and FIGS. 2A and 2C are plan views when the basic shape is observed from the upper surface side. 2 (b) and (d) are cross-sectional views showing side surfaces of a basic shape. 2 (a) to 2 (d) show the diameter of the basic shape when the basic shape is completely independent, when a plurality of basic shapes are connected together and formed into a lump or a band shape. And the depth Y of the basic shape is shown. The reference planes in FIGS. 2A to 2D correspond to the primary surface shape in the present invention.

  The primary surface shape of the antireflection film according to the present invention has irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, preferably 3 μm to 20 μm, particularly preferably 5 μm to 10 μm. When the arithmetic average roughness (Ra) is less than 1 μm, the antiglare effect is insufficient. On the other hand, when the arithmetic average roughness (Ra) is more than 30 μm, it is not preferable in that the contrast with respect to external light is severely lowered.

  The primary surface shape of the antireflection film according to the present invention is preferably such that the average interval (Sm) between adjacent recesses is 3 μm to 200 μm, particularly 30 μm to 100 μm. Here, the average interval (Sm) between adjacent protrusions means the distance between the apex that is near the center of the protrusion and the apex that is near the center of the other protrusions adjacent to it. (Z in FIG. 1). This Sm can be determined by, for example, a surface roughness meter.

  The secondary surface shape of the antireflection film according to the present invention is a concave basic shape which may be interconnected, and the basic shape has an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm. It is a surface shape in which the arrangement of the shape on the antireflection surface is substantially irregular. Here, the basic shape means an element of a recess defined by the average depth and the average diameter.

  Here, “substantially irregular” does not mean that the basic shape of the concave portion is formed on the surface of the substrate with a calculated artificial distribution, and the basic shape of the concave portion is a macro optical. It is not large enough to exhibit characteristics, and is not distributed artificially or by self-organization in the form of a diffraction grating or photonic crystal, but the basic shape of the recesses is distributed virtually randomly on the substrate surface. It points to that. Among the substantially irregular arrangements of the basic shapes of the recesses of the present invention, the basic shape of several to several tens of recesses partially and infrequently on a micrometer scale happens to be a diffraction grating-like pattern. Although it may be distributed like a photonic crystal, it is a coincidence product that is much smaller than a magnitude that exhibits a macroscopic light diffraction effect or an optical effect derived from a photonic crystal structure.

  There are cases where the basic shapes constituting the recesses each form the recesses substantially independently, and there are cases where the recesses are formed by being substantially connected to each other, for example, like a band. Whether the elements having the basic shape are independent or connected is determined from the shape between the elements obtained from the surface image and the cross-sectional image taken by the scanning electron microscope.

  The average depth and average diameter of the basic shape can be determined using a surface roughness meter, probe microscope, microscopic interferometer, etc., but it is considered that the actual shape will be reflected more correctly, so use a scanning electron microscope. It is preferable to obtain. Both the average depth and the average diameter are arithmetic average (arithmetic mean) values, and at least three basic shapes must be measured once, preferably 5 or more depending on the degree of distribution of the basic shapes. The basic shape may be measured once or more each time, and the average value may be obtained. More preferably, 20 or more basic shapes may be measured once or more times to obtain the average value.

  The ratio of the concave portion occupying the antireflection surface is preferably 10% to 90%, particularly preferably 25% to 75%, with respect to the effective area of the antireflection surface. If it is less than 10%, it is difficult to obtain sufficient antireflection properties because there are too few recesses. On the other hand, if it exceeds 90%, there are too many recesses and the function as an antireflection film is lowered. . When the average depth of the basic shape is less than 30 nm, the height of the concave portion is too small to function substantially as an antireflection structure. On the other hand, when the average depth exceeds 200 nm, the depth of the concave portion is too large to cause unnecessary light scattering. It is not preferable because it exhibits sex. When the average diameter is less than 80 nm, the diameter of the recesses is too small and the antireflection performance is insufficient, whereas when it exceeds 400 nm, the diameter of the recesses is too large and an unnecessary light scattering property is expressed. It is not preferable. The value obtained by dividing the average depth by the average diameter is preferably in the range of 0.075 to 2.5, particularly preferably 0.2 to 1.8. When this value is less than 0.075, the function as an antireflection structure is insufficient. On the other hand, it is difficult to make a product exceeding 2.5 for manufacturing reasons.

  Further, it is preferable that the recesses have the same size, that is, the frequency distribution of the diameters of the recesses is narrow. Therefore, the number of recesses having a diameter frequency distribution within 75 nm and the number of recesses having a diameter difference within 300 nm with respect to the highest frequency is about 300 nm. It is preferable that it is 70% or more, especially 80% or more.

  And it is preferable that the ratio of the said recessed part which is not mutually connected with respect to the total number of the said recessed part is 10% or more, especially 20% or more.

  In such an antireflection structure, the arrangement of the recesses is substantially irregular according to microscopic observation on the order of a microscope, and at the same time, the arrangement of the recesses is substantially uniform according to macroscopic observation with the naked eye. Therefore, it is particularly excellent in the level of antireflection characteristics and its homogeneity.

<Antireflection film (second antireflection film)>
The second antireflection film according to the present invention is an antireflection film having a contoured antireflection surface on the surface, which is a composite of a predetermined primary surface shape and a predetermined convex secondary surface shape. In terms of
An antireflection surface having a contour shape in which the primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and the following convex secondary surface shape formed on the primary surface shape is combined. An antireflection film.

  Convex secondary surface shape: Consists of concave basic shapes which may be connected to each other, the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection of the basic shape A surface shape whose placement on a surface is substantially irregular.

  FIG. 3 schematically shows a cross section of the first antireflection film according to the present invention.

  As shown in FIG. 3, the second antireflection film 20 according to the present invention includes a primary surface shape 21 in which both the size of the unevenness and the distance Z between adjacent convex portions are relatively large, and the primary surface shape. 21 can be regarded as having a contour shape on the surface that is a composite of the convex secondary surface shape 22 formed on the surface 21.

  The second antireflection film 20 can be formed of a transparent material, preferably a transparent resin material, particularly preferably a transparent ultraviolet curable resin material. In addition, the base material 23 may be formed in the surface in which the antireflection surface of the 2nd antireflection film 20 is not formed as needed.

  The convex basic shapes may be connected to each other. And this convex-shaped basic shape is arrange | positioned substantially irregularly on the said primary surface shape. FIG. 4 is a diagram schematically showing a basic shape constituting the convex portion of the present invention, and FIGS. 4A and 4C are plan views when the basic shape is observed from the upper surface side. FIGS. 4B and 4D are cross-sectional views showing the side surfaces of the basic shape. 4 (a) to 4 (d) show the diameter of the basic shape when the basic shape is completely independent, when a plurality of basic shapes are connected to form a lump, or in the form of a strip. The depth Y of the basic shape is shown. The reference planes in FIGS. 4A to 4D correspond to the primary surface shape in the present invention.

  The primary surface shape of the antireflection film according to the present invention has irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, preferably 3 μm to 20 μm, particularly preferably 5 μm to 10 μm. When the arithmetic average roughness (Ra) is less than 1 μm, the antiglare effect is insufficient. On the other hand, when the arithmetic average roughness (Ra) is more than 30 μm, it is not preferable in terms of severe contrast reduction with respect to external light. The primary surface shape of the antireflection film according to the present invention is preferably such that the average distance (Sm) between adjacent convexities is 3 μm to 200 μm, particularly 30 μm to 100 μm. Here, the average interval (Sm) between adjacent convexities means the distance between the apex that is near the center of the protuberance and the apex that is near the center of the other apex adjacent to it ( Z in FIG. This Sm can be determined by, for example, a surface roughness meter.

  The secondary surface shape of the antireflection film according to the present invention is composed of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, The basic shape is a surface shape whose arrangement on the antireflection surface is substantially irregular. Here, the basic shape means an element of a recess defined by the average height and the average diameter.

  Here, being substantially irregular means that the basic shape of the convex portion is not formed on the surface of the substrate with the calculated artificial distribution, and the basic shape of the convex portion is macroscopic. The basic shape of the convex part is virtually random, and is not distributed artificially or by self-organization in the form of a diffraction grating or a photonic crystal. It means that it is distributed. Among the substantially irregular arrangement of the basic shape of the convex portion of the present invention, the basic shape of several to several tens of convex portions happens to be a diffraction grating partly and infrequently on a micrometer scale. Although it is distributed like a photonic crystal, it is a coincidence product that is much smaller than a magnitude that exhibits a macroscopic light diffraction effect or an optical effect derived from a photonic crystal structure.

  The basic shape that constitutes the convex part may be a case where the convex part is formed substantially independently, and a case where the convex part is formed by being substantially connected to each other, for example, like a band. is there. Whether the elements having the basic shape are independent or connected is determined from the shape between the elements obtained from the surface image and the cross-sectional image taken by the scanning electron microscope.

  The average height and average diameter of the basic shape can be obtained using a surface roughness meter, probe microscope, microscopic interferometer, etc. It is preferable to obtain. Both the average depth and the average diameter are arithmetic average (arithmetic mean) values, and at least three basic shapes must be measured once, preferably 5 or more depending on the degree of distribution of the basic shapes. The basic shape may be measured once or more each time, and the average value may be obtained. More preferably, 20 or more basic shapes may be measured once or more times to obtain the average value.

  The ratio of the convex portion occupying the antireflection surface is preferably 10% to 90%, particularly preferably 25% to 75%, with respect to the effective area of the antireflection surface. If it is less than 10%, it is difficult to obtain sufficient antireflection properties because there are too few projections, while if it exceeds 90%, there are too many projections and the function as an antireflection film is reduced. It is not preferable. When the average depth of the basic shape is less than 30 nm, the height of the convex portion is too small to substantially function as an antireflection structure. On the other hand, when it exceeds 200 nm, the depth of the convex portion is too large and unnecessary. It is not preferable because it exhibits light scattering properties. When the average diameter is less than 80 nm, the diameter of the convex portion is too small and the antireflection performance is insufficient. On the other hand, when the average diameter exceeds 400 nm, the convex portion has a too large diameter and expresses unnecessary light scattering. That is not preferable. The value obtained by dividing the average depth by the average diameter is preferably in the range of 0.075 to 2.5, particularly preferably 0.2 to 1.8. When this value is less than 0.075, the function as an antireflection structure is insufficient. On the other hand, it is difficult to make a product exceeding 2.5 for manufacturing reasons.

  Moreover, it is preferable that the convex portions have the same size, that is, the frequency distribution of the diameters of the convex portions is narrow. Therefore, this convex part has a frequency distribution of diameters, the number of convex parts whose diameter difference is within 75 nm with respect to the concave part with the highest frequency, and the difference in diameter between convex parts with the highest frequency is within 300 nm. It is preferably 70% or more, particularly 80% or more of the number of convex portions.

  And it is preferable that the ratio of the said convex part which is not mutually connected with respect to the total number of the said convex part is 10% or more, especially 20% or more.

  In such an antireflection structure, the arrangement of the projections is substantially irregular according to microscopic observation of a microscope, and at the same time, the arrangement of the projections is substantially according to macroscopic observation with the naked eye. And is particularly excellent in the level of antireflection properties and its homogeneity.

<Molding mold>
The antireflection film according to the present invention can be obtained by preferably using a predetermined shaping mold, shaping the resin composition so as to obtain a predetermined antireflection surface, and curing.

  As the mold for shaping when obtaining the first antireflection film, the following first mold for molding is preferable, and as the mold for shaping when obtaining the second antireflection film, the following mold is used. A second mold is preferred.

<< First mold for mold >>
The first mold for molding according to the present invention has a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm, and the following convex secondary surface shape formed on the primary surface shape. Is a mold for molding having a contour shape on the molding surface.

  Convex secondary surface shape: Consists of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the reflection of the basic shape Surface shape that is substantially irregular in arrangement on the prevention surface.

  Such a first shaping mold is preferable as a shaping mold for obtaining the first antireflection film, and is suitable for shaping the first antireflection film. , Preferably in the form of a roller.

<< Method for manufacturing roller-shaped molds >>
The manufacturing method of the mold for roller-shaped form according to the present invention is as follows:
A primary layer is formed on the peripheral surface of the roller by forming a base layer on the peripheral surface of the roller having the primary surface shape using an alternate adsorption method and then immobilizing fine particles on the base layer. And a step of forming a contour shape in which the secondary surface shape is combined.

(1) Roller peripheral surface having primary surface shape In the present invention, rollers made of various materials can be used. Such a roller is preferably made of a metal material such as nickel or copper, but an inorganic material such as glass or an organic material such as various polymer compounds can be used.

  The method for obtaining the roller peripheral surface having the primary surface shape is arbitrary, and can be appropriately determined according to, for example, the material of the roller. When the roller is made of metal, preferably nickel or copper, examples of a preferable method for forming the primary surface shape on the peripheral surface of the roller include a sand blast method, a mat plating method, and a corrosion method.

  The preferred sand blasting method, mat plating method and corrosion method which can be employed in the present invention will be described below.

  Sanded blasting method: Silica particles are jetted onto a metal roll to physically form irregularities on the roll surface.

  Matt plating method: By adjusting the plating conditions in the plating process on the metal roll surface, the surface is not a mirror surface but a mat surface.

  Corrosion method: The surface of the metal roll is immersed in a solution having oxidizing power to form irregularities on the surface.

(2) Alternate adsorption method The underlayer can be formed using an alternate adsorption method. Here, the alternating adsorption method refers to a thin film composed of a positive electrolyte polymer and a thin film composed of a negative electrolyte polymer on a substrate by alternately immersing the base material in a positive electrolyte polymer aqueous solution and a negative electrolyte polymer aqueous solution. Is a method consisting of alternately generating. In such an alternate adsorption method, the number of times of immersion is usually determined by alternately immersing a substrate having an initial charge on the surface prior to immersion, if necessary, in a positive electrolyte polymer aqueous solution and a negative electrolyte polymer aqueous solution. It becomes possible to form a multilayer structure having the number of layers according to the above.

  The number of immersions in the positive electrolyte polymer aqueous solution and the number of immersions in the negative electrolyte polymer aqueous solution can be appropriately determined according to the required performance as the underlayer, the thickness of the underlayer, and the like.

  Here, the required performance as the underlayer is a performance that imparts to the base material an electric charge sufficient for adhering a necessary amount of fine particles to be described later. In general, the thicker the underlayer, that is, the greater the number of immersions in the aqueous electrolyte polymer solution, the greater the amount of fine particles attached.

  The thinner the underlayer, that is, the smaller the number of immersions in the electrolyte polymer, the better from the viewpoint of productivity. However, experience has shown that when using fine particles with weak adsorption power, the underlayer tends to be thicker. In order to increase the thickness of the underlayer, other than the method of increasing the number of immersions, a method of increasing the film thickness per immersion by adjusting the hydrogen ion concentration or ionic strength of the electrolyte polymer aqueous solution is known.

  In general, the thickness of the underlayer is preferably 50 nm or less, particularly preferably 30 nm or less. The number of immersions in the positive electrolyte polymer aqueous solution and the number of immersions in the negative electrolyte polymer aqueous solution are each preferably 20 times or less, particularly preferably 10 times or less.

  As the positive electrolyte polymer, polyallylamine hydrochloride, polypyrrole, polyaniline, polyethyleneimine, polylysine, polydiallyldimethylammonium chloride (PDDA), polyvinylpyridine and a copolymer containing these monomer components are preferable, and negative electrolyte As the polymer, polyacrylic acid, polystyrene sulfonic acid (PSS), polymethacrylic acid, and a copolymer containing these monomer components are preferable.

  When the underlayer is formed by such an alternate adsorption method, the adhesion strength between the underlayer and the fine particles described later is improved, and the adhesion state of the fine particles to the underlayer can be made preferable as an antireflection structure. . For example, when fine particles having a charge are used, it is recognized that the adhesion strength is improved by the interaction between the charge on the surface of the underlayer and the charge of the fine particles.

  In some cases, a polymer adsorbing layer that functions as a base layer may be formed on a substrate only by being immersed once in either the positive or negative electrolyte polymer aqueous solution. In fact, this is the most productive. In the present invention, such a single immersion is included in the alternate adsorption method for convenience.

  As a method of forming a base layer on the roller peripheral surface having the primary surface shape by an alternate adsorption method, at least a part of the roller peripheral surface of the roller is contacted or immersed in an electrolyte polymer aqueous solution used for forming the base layer. In this state, it is convenient to rotate the roller around its axis.

(3) Fine particles As the fine particles (3) usable in the present invention, for example, various organic or inorganic fine particle materials can be used. In the present invention, silica fine particles, (meth) acrylic polymer fine particles, styrene polymer fine particles, styrene-butadiene polymer fine particles and the like can be preferably used. Here, “(meth) acryl” means both “acryl” and “methacryl”. Since the fine particles are elements of a fine basic shape formed in the antireflection film and the shaping mold according to the present invention, the size and shape thereof are determined according to the target antireflection film and the prototype. be able to. When obtaining the antireflection film and the shaping mold according to the present invention having the same basic shape, it is preferable to use fine particles having a uniform particle size. When aiming at an antireflection structure in which two basic shapes having different sizes are mixed, relatively large particles having a uniform particle size and relatively small particles having a uniform particle size can be used in combination.

  In order to prevent multiple particles from aggregating or continuing, a repulsive force is generated between the particles, and each particle is charged for the purpose of improving the adhesion between the particles and the underlying layer. Is preferred.

(4) Heat treatment and overcoat treatment After adhering the fine particles, it is preferable to perform a heat treatment and / or an overcoat treatment on the surface to which the fine particles have adhered. As a result, the adhesion strength of the fine particles is improved, and the reverse taper shape of the skirt portion of the convex portion constituted by the fine particles is eliminated, so that it becomes easy to mold the resin composition. Heating conditions and overcoat treatment conditions can be determined in consideration of the type and content of fine particles and / or the base, adhesion strength, and the like. For example, heating conditions when using polymer fine particles as the fine particles are preferably 200 ° C. or lower, particularly 40 ° C. to 150 ° C.

  As the overcoat material used in the overcoat treatment, a polymer material, a metal chloride condensate, a metal alkoxide condensate, an alternately adsorbed film, preferably a high film thickness controllability and a throwing power (that is, an object to be adhered) Alternately adsorbing membranes having excellent properties that can be followed by a uniform surface) can be used. Such a preferable alternate adsorption film can be formed by the alternate adsorption method using, for example, the positive electrolyte polymer and the negative electrolyte polymer described above.

  In particular, the overcoat material is preferably a fluorine-based material such as a fluorine-based polymer material, a fluorine-based metal chloride condensate, or a fluorine-based alternating adsorption film. An overcoat material made of such a fluorine-based material is particularly preferable in that it can impart very good antifouling properties and peelability to the above-mentioned base material. Moreover, even if it is a two-layer type overcoat layer, such as coating a fluorine-based silane coupling agent for imparting antifouling properties and peelability onto various alternating adsorption films for eliminating the reverse taper shape good. The overcoat treatment can be performed once or a plurality of times. In particular, antifouling property, releasability and durability can be remarkably improved by performing the overcoat treatment with a fluorine material a plurality of times.

  As described above, it is possible to obtain a shaping mold having a roller shape according to the present invention.

<< Second mold type >>
The second mold for molding according to the present invention has a primary surface shape having irregularities with an arithmetic mean roughness (Ra) of 1 μm to 30 μm, and the following concave secondary surface shape formed on the primary surface shape: Is a mold for molding having a contoured shape with a composite surface on the molding surface.

  Concave secondary surface shape: consisting of concave basic shapes which may be interconnected, the basic shape having an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular.

  Such a second mold for molding is preferable as a molding material for obtaining the above-mentioned second antireflection film, and is suitable for molding the above-mentioned second antireflection film, preferably Is in the form of a film.

<< Method for manufacturing film-shaped molds >>
According to the method for producing a film-shaped mold according to the present invention, a moldable curable resin composition is applied between the film substrate and the above-described roller-shaped mold. A moldable curable resin composition is molded by the above-described mold for molding in the form of a roller, and further includes a step of curing the molded product of the curable resin composition.

  The following shows a specific example of a method for manufacturing a mold for mold having a preferable roller shape, with reference to FIG. 5 as necessary.

  In FIG. 5, 30 is a film substrate. 31 is formed with a contour shape in which a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and a predetermined convex secondary surface shape formed on the primary surface shape are combined. It is a mold for shaping in a roller form on the surface. The details of the roller-shaped mold and its manufacturing method are as described above.

  The shaping mold 31 in the form of a roller is rotated counterclockwise about the roller central axis, and the film base 30 on the left side of the roller is shaped in the form of a roller in accordance with the rotation of the shaping mold. After moving along at least a part of the roller peripheral surface of the mold for mold 31, it is peeled off from the roller peripheral surface and moved in the right direction of the roller. 32 and 33 are pressing rollers. During the period in which the film base 30 moves along the roller peripheral surface in accordance with the rotation of the shaping mold 31 in the form of a roller due to the tension of the pressure roller 32, the pressure roller 33, and the film base 30, the film base A pressure is generated between 30 and the shaping mold 31. In FIG. 5, two pressing rollers 32 and 33 are provided at positions opposed to the shaping mold 31 in the form of a roller, and the film base is a half circumferential surface (center angle 180) of the circumferential surface of the shaping mold roller. Although the case where it is pressed is shown in (°), the present invention is not limited to such a case. The number of pressing rollers is preferably two, but three or more can be provided as necessary. The number of pressing rollers may be 1 or 0 depending on circumstances. Further, the pressing roller does not necessarily have to be in contact with the shaping mold 31 in the form of a roller, and can be provided at a position away from the shaping mold.

  A moldable curable resin composition 34 is applied between the film substrate 30 and the mold material for molding in a roller shape. The curable resin composition 34 applied between the film base 30 and the shaping mold 31 in the form of a roller is rolled into a layer at the pressing portion of the pressing roller 32 or its peripheral portion, and the film base 30 In a state where the film base 30 moves along the roller peripheral surface in accordance with the rotation of the roller-shaped mold 31 in a state of being interposed between the roller-shaped mold 31 and the roller-shaped mold 31, It is formed by a forming mold 31 in the form of a roller. The shaped curable resin composition 35 is peeled off from the shaping mold 31 in a roller shape together with the film base 30.

  The film-shaped mold for molding according to the present invention can be produced by curing the mold of the curable resin composition. Curing of the molded product of the curable resin composition is performed while the film substrate 30 and the molded curable resin composition move along the roller peripheral surface in accordance with the rotation of the molding material 31 in the form of a roller. Preferably it is done. The molded curable resin composition can be cured after being peeled from the molding material 31 in the form of a roller, or at least one of the curing treatments while moving along the roller peripheral surface. It is also possible to perform a further curing treatment after the part has been peeled off from the roller-shaped shaping material.

  As the curable resin composition 31, various ultraviolet curable resin compositions and thermosetting resin compositions can be used. In the present invention, an ultraviolet curable resin composition is preferred. As a particularly preferable specific example of such an ultraviolet curable resin composition, it is also possible to add, for example, a fluorine compound or a silicon compound that improves mold releasability to an epoxy acrylate resin or a urethane acrylate resin. The ultraviolet rays are preferably irradiated by the ultraviolet irradiation device 36 while the film base material 30 and the ultraviolet curable resin composition move along the roller peripheral surface in accordance with the rotation of the shaping mold 31 in the form of a roller. In this case, the film substrate 30 is preferably a material having good ultraviolet transparency. The cured product of the ultraviolet resin composition is not necessarily transparent because it is used as a mold for shaping.

  Various treatments can be applied to the film-shaped mold for molding obtained as described above. Preferable specific examples of such surface treatment include, for example, coating with a fluorine compound or a silicon compound so as to improve releasability or to improve the wear resistance and stain resistance of a release product. Can do.

<Method for producing antireflection film (first method for producing antireflection film)>
In the first method for producing an antireflection film according to the present invention, a moldable curable resin composition is applied between a film base and the above-mentioned mold for molding in the form of a roller. A curable resin composition is formed on the film substrate by the above-mentioned molding material in the form of a roller, and further includes a step of curing the molded product of the curable resin composition.

  Such a method for producing an antireflection film according to the present invention can be described with reference to FIG. 5 and the related description of << Method for producing a mold for film-like shape >>.

  In the first method for producing an antireflection film according to the present invention, the film substrate, the mold for molding in the form of a roller, the moldable curable resin composition, the contents of the molding method or the curing method, etc. 5 and << the manufacturing method of the film-shaped mold-making mold >> can be used. However, it differs from the above in that the first antireflection film is obtained.

  For this reason, the moldable curable resin composition used in the production of the first antireflection film is preferably a cured resin having good transparency. As a resin composition that can be used in the method for producing an antireflection film according to the present invention, for example, it is preferable to add various additives to a polyoxyacrylate resin and a uretanacrylate resin as necessary.

<Method for producing antireflection film (second method for producing antireflection film)>
The second method for producing an antireflection film according to the present invention can be applied by applying a moldable curable resin composition between the film base and the above-mentioned mold-shaped mold. A curable resin composition is molded by the above-mentioned mold for molding and further includes a step of curing the molded product of the curable resin composition.

  The following shows a specific example of a preferable method for producing the second antireflection film with reference to FIG. 6 as necessary.

  In FIG. 6, 40 is a base material. The substrate 40 may be plate-shaped or film-shaped. Moreover, even if it has poor flexibility, it may show high flexibility. In the present invention, preferable base materials include those having excellent transparency, for example, base materials made of polyethylene terephthalate (PET) resin, acrylic resin, and polyolefin resin.

  No. 41 has on the shaping surface a contour shape in which a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and a concave secondary surface shape formed on the primary surface shape are combined. It is a mold for film-like form. The details of the film-shaped mold and the manufacturing method thereof are as described above.

  In FIG. 6, the base material 40 and the mold-shaped mold 41 are moved in the region from the pressing roller 42 to the pressing roller 43 so that there is substantially no speed difference in the right direction horizontally. Yes.

  A moldable curable resin composition 44 is applied between the substrate 40 and the film-shaped mold mold 41. The curable resin composition 44 applied between the base material 40 and the film-shaped shaping mold 41 is rolled into a layer at the pressing portion of the pressing roller 42 or its peripheral portion, and the base material 40 and the film are formed. During the period of movement from the pressing part of the pressing roller 42 to the pressing part of the pressing roller 43 in a state of being interposed between the forming mold 41 in the shape of the film, the forming is performed by the forming mold 41 of the film-like form. Is done. The forming die 41 in the form of a film is peeled off at the pressing portion of the pressing roller 43.

  The second antireflection film 46 according to the present invention can be produced by curing the shaped product of the curable resin composition. It is preferable to perform the curing of the molded article of the curable resin composition before the film-shaped form molding 41 is peeled off. The curing process can also be performed after the film-shaped mold 41 is peeled off, and the curing process is at least part of the curing process before the film-shaped mold is peeled off. It is also possible to perform a further curing treatment after the film-shaped form is peeled off.

  As the curable resin composition, various ultraviolet curable resin compositions and thermosetting resin compositions can be used. In the present invention, an ultraviolet curable resin composition is preferred. As a particularly preferable specific example of such an ultraviolet curable resin composition, for example, a polyoxyacrylate resin or a uretana acrylate resin may be improved in peelability, abrasion resistance, and contamination resistance as necessary. And a compound obtained by adding a fluorine compound or a silicon compound. It is preferable to irradiate the ultraviolet rays by the ultraviolet irradiation device 45 while the curable resin composition moves from the pressing roller 42 to the pressing roller 43 together with the substrate 40. In this case, the base material 40 is preferably a material having good ultraviolet transmittance.

<Optical member>
The optical member according to the present invention has the antireflection film described above.
Such an optical member according to the present invention is particularly excellent in the level of the antireflection characteristic and the homogeneity thereof, and even when various contaminants are adhered, the decrease in the antireflection characteristic is suppressed.

  Therefore, for example, when used as an optical member for displaying information such as a display device, the visibility is improved, and when applied to a light receiving optical member such as a solar battery panel, light is used. The efficiency can be remarkably improved.

<Example 1>
An underlay layer, a particle film, and an overcoat layer were formed on an iron roller having a diameter of 300 mm and a length of 1500 mm by the following method to produce a mold for forming a roller according to the present invention.

In the roller-shaped form, the following primary surface shape and secondary surface shape have contour shapes on the surface.
Primary surface shape: Concavities and convexities with arithmetic average roughness (Ra) of 5 μm are formed. Average interval between convexes (Sm) 50 μm
Secondary surface shape: a convex portion having an average height of 97 nm and an average diameter of 138 nm of the basic shape is formed.

A. Underlayer formation 1. Prepare pre-cleaned and cleaned rolls.
・ Prepare two types of polymer solutions.
PDDA polymer solution (+): PDDA (molecular weight 400,000-500,000) 0.4 wt%, 0.1 MNacl
(PDDA: manufactured by Aldrich Chemical Company.inc)
-PSS polymer solution (-): PSS (molecular weight 1,000,000) 0.4 wt%, 0.1 MNacl
(PSS: Aldrich Chemical Company.inc)

2. Coating treatment of PDDA polymer solution
2-1 Put about 2 liters of PDDA polymer solution into the ink pan.
2-2 Immerse the roll in a PDDA polymer solution ink pan about 1/3 of the diameter and rotate the roll for about 2 minutes.
2-3 Replacing the ink pan (Replace the PDDA ink pan with a cleaning ink pan).
2-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll, and wash it with shower pure water. Washing time 2 minutes 30 seconds.

3. Coating treatment of PSS polymer solution
3-1 Put about 2 liters of PSS polymer solution into the ink pan.
3-2 Immerse the roll about 1/3 in the PSS polymer solution ink pan, and coat for about 2 minutes while rotating the roll.
3-3 Replacing the ink pan (Replace the PSS ink pan with a cleaning ink pan).
3-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll and wash it with shower pure water. Washing time 2 minutes 30 seconds.
The PDDA polymer solution coating process and the PSS polymer solution coating process described above were alternately repeated a total of 6 times.

4). Coating treatment of polymer solution PDDA
4-1 Put about 2 liters of PDDA polymer solution into the ink pan.
4-2 Immerse the roll in a PDDA solution ink pan about 1/3 of the diameter, and apply the coating for about 10 minutes while rotating the roll.
4-3 Replacing the ink pan (Replace the PDDA ink pan with a cleaning ink pan)
4-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll and wash it with shower pure water. Washing time 2 minutes 30 seconds.

5. After finishing the post-treatment and cleaning, weaken the air and get some moisture.
-Then let it air dry.

B. Underlayer formation 1. Preparatory work / prepared roll with base layer formed.
・ Prepare the particle liquid. Spherica slurry 120 (Catalyst Kasei Kogyo Co., Ltd.), particle concentration of about 18.2% is prepared. Particle size 0.11μ (catalog value)

2. Particle Film Coating 2-1 Put about 2 liters of particle solution into an ink pan.
2-2 The roll is immersed in the particle solution ink pan for about 1/3, and the roll is rotated for 1 minute.
2-3 Ink pan replacement (Replace the particle ink pan with a cleaning ink pan)
2-4 Immerse the roll in the prepared pure water washing ink pan, rotate the roll and wash it with shower pure water. Washing time 4 minutes.
2-5 After cleaning, apply weak air to remove moisture.
After that, let it air dry.

C. Overcoat layer formation Preparatory work ・ Prepared a sample with particles formed (heat treated).
・ Prepare two types of polymer solutions.
1-1 PDDA polymer solution (+) → PDDA (molecular weight 400,000-500,000) 0.4wt%, 0.2MNacl
1-2 PSS polymer solution (-)-> PSS (molecular weight 1,000,000) 0.4wt% 0.2MNacl

2. Coating of polymer solution PDDA
2-1 Put about 2 liters of PDDA polymer solution into the ink pan.
2-2 Immerse the roll about 1/3 in a PDDA solution ink pan, and rotate the roll for about 2 minutes.
2-3 Ink pan replacement (Replace PDDA ink pan with cleaning ink pan)
2-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll, and wash it with shower pure water. Washing time 2 minutes 30 seconds.

3. Coating of polymer solution PSS
3-1 Put about 2 liters of PSS polymer solution into the ink pan.
3-2 Immerse the roll in PSS solution ink pan about 1/3, and rotate the roll for about 2 minutes.
3-3 Ink pan replacement (Replace PSS ink pan with cleaning ink pan)
3-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll and wash it with shower pure water. Washing time 2 minutes 30 seconds.
The above process is repeated a total of 6 times.

4). Coating of polymer solution PDDA
4-1 Put about 2 liters of PDDA polymer solution into the ink pan.
4-2 Immerse the roll in a PDDA solution ink pan about 1/3 and rotate the roll for about 2 minutes.
4-3 Replacing the ink pan (Replace the PDDA ink pan with a cleaning ink pan)
4-4 Immerse the roll in the prepared ink pan for pure water cleaning, rotate the roll and wash it with shower pure water. Washing time 2 minutes 30 seconds.

5. After finishing the post-treatment and cleaning, weaken the air and get some moisture.
-Then let it air dry.
After cleaning, apply some air to the surface to weaken the air. After that, let it air dry.

<Example 2>
The antireflection film according to the present invention was manufactured using the shaping mold in the form of a roller obtained in Example 1 and the apparatus shown in FIG.
As the film substrate 30, a PET substrate having a thickness of 100 μm was used, and as the ultraviolet curable resin composition 34, an epoxy acrylate resin added with a fluorine compound was used.

  The moving speed of the film substrate 30 in the horizontal direction is 20 m / m, and the shaping mold 31, the pressing roller 32, and the pressing roller 33 in the form of a roller are rotated corresponding to this speed. The curable resin composition 34 applied between the film base 30 and the shaping mold 31 in the form of a roller is rolled into a layer at the pressing portion of the pressing roller 32 or its peripheral portion, During the period in which the film substrate 30 moves along the roller peripheral surface in accordance with the rotation of the roller-shaped mold 31 while being interposed between the roller-shaped mold 31 and the roller, It is shaped by the shaped mold 31 for shaping. The shaped curable resin composition 35 is peeled off from the shaping mold 31 in a roller shape together with the film base 30.

The molded curable resin composition 35 had a thickness of 10 μm, and the following primary surface shape and secondary surface shape had contour shapes on the surface.
Primary surface shape: Concavities and convexities with arithmetic average roughness (Ra) of 5 μm are formed. Average spacing (Sm) between recesses is 50 μm.
Secondary surface shape: Concavities with an average height of 97 nm and an average diameter of 138 nm of the basic shape are formed

<Example 3>
The antireflection film according to the present invention was produced by using the antireflection film of the present invention obtained in Example 2 as the shaping mold 41 in the form of a film in the apparatus shown in FIG.

  As the substrate 40, a PET substrate having a thickness of 50 μm was used. The moving speed of the base material 40 in the horizontal direction is 30 m / m, and the shaping mold 41 in the form of a film moves corresponding to this speed, and the pressing roller 42 and the pressing roller 43 rotate. Yes.

  A moldable curable resin composition 44 is applied between the base material 40 and the film-shaped mold 41 and rolled into a layer at the pressing portion of the pressing roller 42 or its peripheral portion. During the period of movement from the pressing part of the pressing roller 42 to the pressing part of the pressing roller 43 in a state of being interposed between the material 40 and the molding mold 41 in the film-like form, the above-mentioned forming mold in the film-like form is used. The anti-reflection film 46 according to the present invention was manufactured by peeling the film-shaped forming die 41 at the pressing portion of the pressing roller 43.

The antireflection film 46 had the following primary surface shape and secondary surface shape having a contour shape on the surface.
Primary surface shape: Concavities and convexities with arithmetic average roughness (Ra) of 5 μm are formed. Average spacing (Sm) between convexes is 50 μm.
Secondary surface shape: a convex portion having an average height of 97 nm and an average diameter of 138 nm of the basic shape is formed.

Sectional view of the first antireflective coating according to the present invention Sectional drawing which shows the outline of the concave secondary surface shape in the 1st antireflection film by this invention Sectional view of a second antireflective coating according to the invention Sectional drawing which shows the outline | summary of the convex secondary surface shape in the 2nd antireflection film by this invention The figure which shows the outline | summary of the manufacturing method of the preferable 1st mold for shaping | molding by this invention. The figure which shows the outline | summary of the manufacturing method of the preferable mold for 2nd shaping | molding by this invention. The graph which shows the reflectance of the film which has the contour shape of the primary surface shape and secondary surface shape which were obtained in Example 2 of this invention on the surface The graph which shows the transmittance | permeability of the film which has the contour shape of the primary surface shape and secondary surface shape which were obtained in Example 2 of this invention on the surface

Explanation of symbols

10, 20 Anti-reflective coating 11, 21 Primary surface shape 12, 22 Secondary surface shape 30, 40 Base material 31 Molding mold 41 in roller form Forming mold 32, 33, 42, 43 in film form Roller 34 44 Curable resin composition 36, 45 UV irradiation device

Claims (13)

An antireflection surface having a contour shape in which a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and the following concave secondary surface shape formed on the primary surface shape is combined on the surface. An antireflection film comprising:
Concave secondary surface shape: Consists of concave basic shapes that may be interconnected, and the basic shape has an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular. An antireflection surface having a contour shape in which the primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and the following convex secondary surface shape formed on the primary surface shape is combined. An antireflective film characterized by comprising:
Convex secondary surface shape: Consists of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the reflection of the basic shape Surface shape that is substantially irregular in arrangement on the prevention surface.   The antireflection film according to claim 1, wherein the primary surface shape has an average interval (Sm) between adjacent convexities of 3 μm to 200 μm.   An antireflection material comprising a base material and the antireflection film according to any one of claims 1 to 3. The molded surface has a contour shape in which a primary surface shape having irregularities with an arithmetic average roughness (Ra) of 1 μm to 30 μm and the following convex secondary surface shape formed on the primary surface shape are combined. Molding mold characterized by that.
Convex secondary surface shape: Consists of convex basic shapes which may be connected to each other, and the basic shape has an average height of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the reflection of the basic shape Surface shape that is substantially irregular in arrangement on the prevention surface.   The mold for shaping according to claim 5 in a roller form. The molded surface has a contour shape in which the primary surface shape having irregularities with an arithmetic mean roughness (Ra) of 1 μm to 30 μm and the following concave secondary surface shape formed on the primary surface shape are combined. A mold for shaping.
Concave secondary surface shape: consisting of concave basic shapes which may be interconnected, the basic shape having an average depth of 30 nm to 200 nm and an average diameter of 80 nm to 400 nm, and the antireflection surface of the basic shape A surface shape whose placement in is substantially irregular.   The mold for shaping according to claim 7 in a film form. It is a manufacturing method of the shaping type | mold of the roller-shaped form of Claim 6, Comprising:
On the peripheral surface of the roller having the primary surface shape, an underlayer is formed using an alternate adsorption method.
Next, the method includes a step of forming a contour shape in which the primary surface shape and the secondary surface shape are combined on the peripheral surface of the roller by fixing fine particles on the base layer. The manufacturing method of the mold for roller-shaped forms. It is a manufacturing method of the shaping type | mold of the film-form form of Claim 8, Comprising:
Applying a moldable curable resin composition between the film substrate and the mold for molding in the roller form according to claim 6;
This moldable curable resin composition is molded by the above-mentioned mold for molding in the form of a roller,
Furthermore, the manufacturing method of the shaping | molding type | mold with a film-form form characterized by including the process of hardening the molding of the said curable resin composition. It is a manufacturing method of the antireflection film according to claim 1,
Applying a moldable curable resin composition between the film substrate and the mold for molding in the roller form according to claim 6;
This moldable curable resin composition is molded by the above-mentioned molding material in the form of a roller,
Furthermore, the manufacturing method of the anti-reflective film characterized by including the process of hardening the molding of the said curable resin composition. It is a manufacturing method of the antireflection film according to claim 2,
Applying a moldable curable resin composition between the film substrate and the mold for molding in the film form according to claim 8;
This moldable curable resin composition is molded by the above-mentioned film-shaped mold for molding,
Furthermore, the manufacturing method of the anti-reflective film characterized by including the process of hardening the molding of the said curable resin composition.   An optical member comprising the antireflection film according to claim 1.

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