TW201128216A - Method for producing optical film, optical film, polarizer and display - Google Patents

Abstract

Disclosed is a method for producing an optical film which has excellent productivity, prevents formation of interference fringes between a hard coat layer and a layer that is in contact with the substrate side of the hard coat layer, and has excellent visibility. The method comprises the steps of: preparing an optically-transparent substrate; preparing a first composition and a second composition, the first composition comprising a first resin and a first solvent, comprising no low refractive index component or comprising a low refractive index component of 5.0% by mass or less with respect to the mass of the first resin, and having viscosity μ 1 of 3 mPa.s or more, and the second composition comprising a second resin, a second solvent and a low refractive index component, and having viscosity μ 2 of 5mPa.s or more and a difference between μ 2 and μ 1 of 30 mPa.s or less; forming coating films by applying at least the first and second compositions simultaneously and adjacently to one side of the optically-transparent substrate in this order from the substrate; and curing the coating films by exposure to light or heating after drying the coating films, without pre-curing the films prior to the crying.

Description

201128216 VI. Description of the Invention: [Technical Field] The present invention relates to a display (image display device) such as a liquid crystal display (LCD), a cathode tube display device (CRT), or a plasma display (PDP), etc. The optical film disposed at the place, the manufacturing method thereof, and the polarizing plate and the display using the same. [Prior Art] In the display as described above, in order to improve the visibility of the display surface, it is required to reduce reflection from light irradiated from an external light source such as a fluorescent lamp or sunlight. A method of suppressing reflection of external light is known as a method of using an antireflection film in which a low refractive index layer is provided on the outermost surface of a functional layer such as a hard coat layer (for example, Patent Document 1). However, in the invention of Patent Document 1, the composition for forming a functional layer is applied, and the functional layer is formed by semi-hardening by means of free radiation, and the low refractive index layer is formed on the functional layer of the semi-hardened state. In the method of using the composition, the method of completely hardening (half-curing), and the conventional application of coating the composition on each layer of each layer, and then completely hardening the double-layer coating method, because A plurality of coating steps and hardening steps will be performed, and thus productivity is poor. In view of this, 'Patent Document 2 has a proposal: the main purpose is to provide two layers of functional layers at the same time, and to achieve high productivity, high interlayer adhesion, and no barrier to separation of functions between layers. Optical film of 099141183 4 201128216 The gas system will be coated with a layer of A and B layers of free light ray curable resin, respectively, and will be applied! After the secondary free Korean ray irradiation (prebaking), drying is performed, and then the second epilation radiation is applied to harden (the surface 彳_optical (4) manufacturing method is required. The high adhesion also requires high adhesion between the two-layer coating layer and the substrate or the substrate-side contact layer. Patent Document 2 has high adhesion between layers, and each layer is separated, but simultaneously coated. There is a layer interface between the A layer (hard coat layer or anti-glare layer) and (4) (refractive index control layer). Further, in Patent Document 1 f, an attempt is made to reduce the refractive index of the low-refractive-index layer to include a middle-sister, etc. Low-refractive-index microparticles, but purely the micro-refractive-index particles are incorporated into the low-refractive-index layer, the refractive index of the low-refractive-index layer is lowered, but the refractive index of the low-refractive-index layer is adjacent to the functional layer adjacent to the substrate side. The rate is higher than the low refractive index layer, so at the boundary (interface) between the low refractive index layer and the functional layer, the low refractive index microparticles in the low refractive index layer and the functional layer have a refractive index difference, if precise film thickness control is performed , interference patterns will occur, resulting in the use of anti-reverse In the display surface of the display of the film, there is a problem that the visibility is lowered. [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-053691 [Patent Document 2] Japanese Patent Laid-Open No. 2008-250267 SUMMARY OF THE INVENTION [99] The present invention has been made to solve the above problems, and a first object of the present invention is to provide anti-reflection by performing simultaneous (four) (dual coating) Function, and maintain the duty, total light transmittance and New (four) shape, and improve the productivity by reducing the coating step and the hardening step, and suppress the interlayer interference by (4) the interlayer interface caused by successive coatings The occurrence of the grain, the adhesion is improved, and the ratio of the hard coating composition having the same refractive index as the refractive index of the substrate is increased in the vicinity of the substrate, thereby suppressing the occurrence of interference fringes between the hard coat layer and the substrate. An optical film excellent in adhesion and a method for producing the same. A second object of the present invention is to provide a polarizing plate comprising the above optical film. The third object of the present invention provides: providing the above optical film The present inventors have intensively studied and found that the first composition (which does not contain low refractive index fine particles and low refractive index resin, or even contains a low refractive index tree) The curable resin having a photocurable resin or a thermosetting resin is reduced in mass to 5% by mass or less, and has a specific viscosity, and the second composition (which contains low refractive index fine particles and has a specific viscosity), The first composition is adjacent to the second composition from the side of the substrate and simultaneously coated on the substrate or on the layer provided on the substrate, without pre-baking before drying. Drying is carried out, and then hardening is performed by light irradiation or heating, and the film thickness direction of the Hc layer can be obtained with high productivity, so that the presence of the low refractive index microparticles is the interface of the HC layer on the opposite side of the substrate. The side is more than the base 099141183 201128216 material side 'and the more the distribution of the amount of microparticles on the substrate side is reduced, that is, the formation of a low refractive index from the interface side of the opposite side of the substrate toward the substrate side: Particles gradually decrease The distribution does not form a clear layer interface which is conventionally formed by using a double-layer coating to form a low refractive index layer and a Hc material, or when it is formed by using the same coating as in Patent Document 2, and has anti-reflection function, and In the case of maintaining the haze value, the total light transmittance, and the smear-reducing surface, H is removed from the interlayer interface caused by the successive application, thereby suppressing the occurrence of interference fringes between the layers, and the adhesion is improved by the substrate. In the vicinity, an optical film having an increase in the ratio of the hard coat composition having the same refractive index as the refractive index of the substrate and suppressing the occurrence of interference fringes between the hard coat layer and the substrate and having excellent adhesion is completed. * The method for producing an optical film of the present invention includes: (1) a step of preparing a light-transmitting substrate; (ii) preparing a hardenable resin composition for a first hard coat layer and hardening for a second hard coat layer; In the step of the resin composition, the curable resin composition for the first hard coat layer contains a reactive first resin and a first ♦ agent and does not contain a low refractive index (four)? And a low-replication lion, or a low-refractive-index resin, is 5 G mass% or less with respect to the mass of the first resin, and the viscosity/XI is 3 mPa·s or more; the curable resin composition for the second hard coat layer The composition includes a low refractive index microparticle having an average particle diameter of 1 G to a fine refractive index and a low refractive index tree, and a second emissivity component and a second solvent having a reactivity, wherein the viscosity μ2 is 5, s, and (6) deducting the value of 5 hai Ml is below 30 mPa · s; (out) on the side of the light-transmitting substrate, from the side of the light-transmitting substrate, at least 099141183 7 201128216 The first hard coat layer hardenable resin composition and the second hard coat layer hardenable resin composition are adjacent to each other and are simultaneously coated to form a coating film; and (iv) is made as described above ( Iii) a step of drying the coating film obtained by the step, followed by light irradiation and/or heating to effect hardening; and pre-baking is not performed between the (m) step and the (iv) step. The first HC layer is made of a curable resin which does not contain the low refractive index fine particles and the low refractive index resin, or the low refractive index resin is reduced to 5.0 mass% or less with respect to the first resin mass and has the above specific viscosity. (hereinafter referred to as "first composition"), and a second HC layer containing one or more kinds of low refractive index components selected from the group consisting of low refractive index fine particles and low refractive index resins and having the above specific viscosity The curable resin composition (hereinafter referred to as "second composition") is subjected to double-layer coating while the first composition and the second composition are in the adjacent position from the side of the light-transmitting substrate. The HC layer is formed and pre-baking is not performed, whereby the low refractive index component contained in the second composition is present in the film thickness direction of the HC layer, and there is a pair of layers (the layer is light-transmitting substrate). The interface side on the side is more on the side of the light-transmitting substrate, and the side of the light-transmissive substrate is formed so that the amount of the low-refractive-index component decreases, and the light-transmissive substrate is formed. Opposite side interface toward the light transmissive substrate side When the low refractive index component is gradually decreased, interference grain generation due to a difference in refractive index between the low refractive index component and the resin of the HC layer in the HC layer, and interference fringes at the interface between the HC layer and the substrate can be obtained, and Optical film with excellent visibility. 099141183 8 201128216 And 'Because the coating film is dried without pre-baking, and then the light is applied, and the coating film is hardened, the coating film is hardened. In the case of curing and curing, the adhesion between the HC layer and the light-transmitting substrate and the HC layer by the light-transmitting substrate adjacent to the substrate side is improved. The term "pre-baking" in the present invention means Light irradiation and/or heating in which the coating film is not substantially hardened. The term "substantial curing of the coating film" means drying the coating film to reduce the solvent in the coating film, and the cured coating film is in accordance with JIS K5600-5-4 (1999). The predetermined pencil hardness test (4.9 Ν load) exhibits a hardness of "η" or more. In a preferred embodiment of the method for producing an optical film of the present invention, the following optical film can also be obtained, which is in the above (iii) In the step, the first hard coat When the coating film wetting film thickness of the curable resin composition is T1 and the coating film wetting thickness of the second hard coat layer curable resin composition is T2, by dividing T2 by Τ1 When the value (that is, Τ2/Τ1) is 0.01 to 1, the low refractive index component is present on the interface side of the opposite side of the light-transmitting substrate of the HC layer in the film thickness direction of the hard coat layer. On the light-transmissive substrate side, the amount of the low-refractive-index component decreases as the light-transmissive substrate side passes, and the light-penetrating substrate is placed on the opposite side of the light-transmitting substrate toward the light. On the side of the transparent substrate, the low refractive index component is gradually reduced, and in the film thickness direction of the hard coat layer, from the interface from the opposite side of the light transmissive substrate to the hard coat dry film In the region up to 7〇% thick, there is a distribution of 7〇~1〇〇% of the total amount of the low refractive index component. By forming the distribution of such a low refractive index component, the antireflection performance of the optical film can be sufficiently exhibited even if the content of the low refractive index component is reduced. 099141183 9 201128216 In addition, the distribution of low-refractive-index microparticles in the film thickness direction of the HC layer can be observed by TEM (transmission electron microscope) photograph of the cross section of the HC layer in the thickness direction. For the resin distribution, for example, an optical film is occluded with a thermosetting resin, and an ultrathin slice having a thickness of 80 nm is produced from the occluded optical film using an ultrathin slicer manufactured by LEICA Corporation, followed by gas phase dyeing using Ru04. And can be measured by observation using TEM. In a preferred embodiment of the method for producing an optical film of the present invention, it is preferred that the first hard coat layer has a viscosity μΐ of from 3 to 95 mPa·s, and the second hard coat layer is made of a curable resin. The viscosity μ2 of the object is 5 to 100 mPa·s because the HC layer having the specific low refractive index component distribution described above can be easily obtained. The optical film of the present invention is an optical film obtained by the above-described method for producing an optical film. In a preferred embodiment of the optical film of the present invention, an optical film having a hard coat layer on one side of the light-transmitting substrate may be used, wherein the low-refractive-index microparticles in the film thickness direction of the hard coat layer There is a state in which the interface side on the opposite side of the light-transmitting substrate is more on the side of the light-transmitting substrate, and the side of the light-permeable substrate is on the side of the light-permeable substrate. The less the amount is present, from the interface from the opposite side of the light-transmitting substrate toward the side of the light-permeable substrate, the low-refractive-index component is gradually reduced, and the layer has no layer interface in the hard coating layer. In 099141183 10 201128216 § Hai hard coating in the checkerboard adhesion test of the above light penetrating substrate, the adhesion rate can be made 90~100 〇 /. . Here, the "adhesive ratio of the checkerboard adhesion test" refers to a checkerboard in which the total i (8) grid is divided by 1 mm square on the side surface of the HC film of the optical film, and a 24 mm wide adhesive tape (for example, the NIcmBAN (stock) industry) is used. Five consecutive peeling tests were carried out using Celluloid Tape (registered trademark), and the percentage of the squares remaining without peeling was calculated according to the following criteria. Bonding ratio (%) = (number of squares not peeled off / total number of squares 丨 00) X100 The preferred embodiment of the optical film of the present invention may also be in the film thickness direction of the hard coat layer The interface between the opposite sides of the penetrating substrate is up to 7 G% of the dry thickness of the hard coat layer, and 70 to 100% of the total amount of the upper (four) refractive index particles is present. The polarizing plate of the present invention is provided with a polarizer on the side of the light-transmitting substrate opposite to the hard coat layer of any of the above optical films. The display device of the present invention is characterized in that the display panel is disposed on the side of the light-transmissive substrate on which the optical film is opposed to the hard coat layer. (Effect of the Invention) The first composition (which does not contain the low refractive index fine particles and the low refractive index resin, or the above specific amount even if the low refractive index resin is contained, and has the above specific viscosity), and the third composition (It contains low refractive index particles and /

Or a low refractive index resin 'having the above specific viscosity), and coating the first composition and the second composition from the side of the light transmissive substrate in the state of adjacent position (4) 099141183 11 S 201128216 In the case of prebaking, the coating film is dried, and then light irradiation or heating is performed to form an HC layer, whereby low refractive index fine particles and/or low refractive index resin contained in the second composition can be obtained. In the film thickness direction of the HC layer, the interface side of the opposite side of the light-transmitting substrate is more than the light-transmitting substrate (four), and the light-transmissive substrate is present. a distribution with less f, and a distribution from the interface on the opposite side of the light-transmitting substrate toward the light-transmissive substrate side, and having an anti-reflection function, And by maintaining the haze value, the total material penetration rate, and the non-stained surface shape, 'improving productivity by reducing the coating step and the hardening step' and suppressing by eliminating the interlayer interface caused by successive coating The interference pattern between the layers occurs, so that the adhesion is favorable, # θ == the same rate of incidence Hard coating composition reflectance ratio; while suppressing interference with _ = _ material layer pattern occurs, and an optical film excellent in adhesion York. [Embodiment] It is to be noted that: First, the method for producing a precursor film of the present invention will be described, and the optical film will be described later. In the present invention, (fluorenyl) acrylate means. Internal machine 五 (5) methyl propyl _ Furthermore, the optical system of the present invention is not limited to electromagnetic waves, and covers such as the wavelength of the visible region of the electron ray and the particle ray line called the thief secret (four), the money electromagnetic wave in the present invention, in the absence Under the premise of special statement, the term "film thickness" refers to the film thickness (dry film thickness) of dry 099141183 1 Λ 201128216. In the present disclosure, the term "hard-coating" means a hardness of not less than 5% according to the pen hardness test (4.9 N load) prescribed in JIS 1 (5600-5-4 (1999). In addition, film and sheet In the definition of JIS-K6900, the so-called "slice" core UI I has a flat mouth with a thickness that is small relative to the length and width: "film" means that the thickness is minimal compared to the length and width. The maximum thickness is an arbitrarily defined thin flat product. The general method is according to the reel type. The thickness of the film is particularly thin, and the thickness of the film is not the boundary between the film and the film. H is clearly distinguishable, and thus the present invention will cover the meaning of both thicker and thinner (4) "films". The term "resin" in the present invention encompasses polymerization in addition to monomers and oligomers. The concept of the substance becomes a HC layer or a component thereof after being hardened. In the present invention, the term "molecular weight" means a case where a molecular weight distribution is used, and a gel permeation chromatography layer (ah) is used in a solvent. The weight average molecular weight of the polystyrene exchange value is measured. In the case of the distribution of the sub-quantity, the molecular weight of the compound itself is used. In the present invention, the "average particle diameter of the low-refractive-index microparticles" means that the particles of the solution towel are measured by a dynamic light scattering method in the case of the microparticles of the composition. The cumulative distribution indicates a 50% particle diameter (d grain size) when the particle size distribution of the primary particle diameter and the secondary particle diameter is included, and can be measured by using a Japanese machine crack (strand) system and a particle size analyzer. In the case of the fine particles in the layer, the average value of the 2G pieces of the hard film observed by the TEM photograph of 099141183 13 201128216 is used. (Manufacturing method of optical film) The manufacturing method of the optical film of the present invention includes: (1) Preparation light (8) a step of preparing a curable resin composition for a first hard coat layer and a curable resin composition for a second hard coat layer, wherein the curable resin composition for the first hard coat layer contains Reactive first resin and first solvent, and not containing low refractive index fine particles and low refractive index resin, or even containing low refractive index resin, relative to the first resin mass of 5. 〇 mass% The viscosity μΐ is 3 mPa·s or more; the curable resin composition for the second hard coat layer contains a group of low refractive index fine particles and a low refractive index resin having an average particle diameter of 1 〇 to 3 〇〇 11111. Selecting a low refractive index component or more and a reactive second resin and a second solvent, the viscosity is from 2 to 5 mPa·s or more 'and the value of the μ2 deducting the value is 3〇1^.8 In the following, (iii) at least one side of the light-transmitting substrate on the side of the light-transmitting substrate, the curable resin composition for the first hard coat layer and the second hard coat layer are cured. a step of forming a coating film adjacent to and applying the resin composition; and (IV) a step of drying the coating film obtained by the above (the) step, followed by performing light irradiation and/or heating; And pre-baking is not performed between the (out) step and the (iv) step. Fig. 1 is a schematic cross-sectional view showing an example of distribution of low refractive index fine particles in the HC layer of the optical film obtained by the production method of the present invention. The optical film 1 is provided with an HC layer 599141183 14 201128216 20' on one side of the light-transmitting substrate 10, and in the HC layer, the low-refractive-index fine particles 3 are present in the opposite direction of the light-transmitting substrate. The interface side of the side is more in the state of the light-transmitting substrate side, and the lighter penetrating substrate _ is present in a smaller amount, that is, having a side opposite to the sin-transmitting substrate. The interface faces the light-transmissive substrate side, and has a distribution in which the low refractive index component is gradually reduced. Fig. 2 is a schematic cross-sectional view showing the distribution of low refractive index fine particles in the low refractive index layer of the antireflection film in accordance with the sequential two-layer (four) method. The anti-reflection film 100 is disposed on one surface side of the light-transmitting substrate 1A, and the layer 11G and the low-refractive-index layer (10) are provided from the side of the light-transmitting substrate, and the low-refractive-index particles 30 in the low-refractive-index layer are Evenly distributed, since the low refractive index layer is formed after the Hc layer is completely hardened, the low refractive index fine particles are not in the HC layer, and the refractive index difference becomes large at the interface between the low refractive index layer and the HC layer. , resulting in interference patterns. Further, the interface between the HC layer and the low refractive index layer can be clearly distinguished. Further, if the thickness of the region in which the low-refractive-index particles of Fig. 所 are present, and the thicker low-refractive-index layer having the same film thickness is formed of a conventional anti-reflection film, interference fringes occur. According to this, in the conventional double-layer coating method, if the thickness of the low-refractive-index particle distribution is determined in accordance with the coating method according to the present invention, the layer (low-refractive-index layer) of the same thickness is formed as the lower layer. The hardened portion of the composition has an interface with the hardened portion of the composition that becomes the upper layer, and the upper layer composition of the interface portion contains the refractive index difference between the low refractive index fine particles and the resin contained in the lower layer composition. Larger, resulting in interference patterns. 099141183 15 201128216 In contrast, in the method for producing an optical film of the present invention, the first composition (which does not contain low refractive index fine particles and low refractive index resin, or even contains a low refractive index resin is relative to the first resin) The mass is 5 〇 mass% or less, and has the above specific viscosity), and the second composition (which contains a low refractive index component and has the above specific viscosity), and the first composition is made from the side of the light transmissive substrate And the second composition is simultaneously coated in an adjacent position state to form an HC layer, and by performing prebaking, as shown in FIG. 2, the low refractive index component contained in the second composition is In the film thickness direction of the Hc layer, the interface side on the opposite side of the HC layer # light-transmitting substrate is more on the side of the light-transmitting substrate, and the side closer to the light-transmitting substrate is lower. The distribution in which the amount of the refractive index fine particles is decreased, that is, the distribution from the interface side on the opposite side of the light-transmitting substrate toward the light-transmitting substrate side, the distribution of the low refractive index component is gradually decreased, and the HC is suppressed. In the layer due to the low refractive index component and the resin of the HC layer Interference fringes caused by the difference in refractive index and suppression of interference fringes at the interface between the HC layer and the substrate, excellent visibility, and H (: layer, light transmissive substrate or light penetration) An optical film having excellent adhesion between adjacent layers on the side of the substrate. Further, since it is not necessary to perform prebaking, it is produced in comparison to the case where prebaking and formal hardening of 42 degrees of light irradiation are performed to cause hardening. It is also excellent. In addition, when an HC layer containing low refractive index fine particles having a low refractive index component is simultaneously coated on a light-transmissive substrate, the adhesion between the HC layer and the light-transmitting substrate is Although the reason for goodness is not clear, it can be presumed that the following is 091411183 16 201128216. That is, if the resin contained in the first composition is joined, the resin will penetrate into the light-transmitting substrate and be produced == The physical combination 'is therefore supposed to improve the adhesion between the H c layer and the light-transmitting substrate. Relative to this, when the low-refractive-index particles contained in the HC layer are not formed, the light penetrates as above. Substrate _ the presence of a reduced amount of distribution, When uniformly dispersed in the HC layer, 'at the interface of the Hc layer on the side of the light-transmitting substrate, only the portion occupied by the low-refractive-index particles may be infiltrated by the resin without chemical chemistry between the resin and the substrate. And/or physical bonding, it is presumed that the adhesion is not improved. Further, if the first composition and the second composition are applied simultaneously on the light-transmitting substrate, the pre-baking is performed. Then, in the presence of a solvent, the resin f starts to undergo polymerization or cross-linking before it penetrates into the light-transmitting substrate, resulting in a large (4) molecule of the tree, and the resin is not penetrated into the human light-permeable substrate. Even if it is dried and then subjected to light irradiation or heating, it is presumed that the adhesion is not improved. It is presumed that the first composition and the second composition are simultaneously coated on the light-transmitting substrate. When the HC layer of the present invention having a specific low refractive index fine particle distribution is formed, it is excellent in adhesion to a light-transmitting substrate. Fig. 3 is a schematic view showing a step of performing simultaneous coating of the first and second HC layer curable resin compositions in the method for producing an optical film of the present invention. The curable resin composition 6 q and the second hard coat layer for the first hard coat layer are respectively applied to the slit 51 of the wedge coating head 40 and 099141183 17 201128216 5 2 on the light-transmitting substrate 1A. The hardenable resin composition 70 is formed by applying a double-layer coating to form a first-hard coating layer in such a manner that the hardened (four) lipid composition for the first-hard coat layer is located on the side of the light-transmitting substrate. A coating film 71 of a curable resin composition for a layer and a coating film 71 of a curable resin composition for a second hard coat layer. In addition, in FIG. 3, the curable resin composition for the first hard coat layer and the curable resin composition for the second hard coat layer are originally formed into a body to form a hard (four), but for simplification of description, The composition is separated from its coating film by a color diagram. Hereinafter, the light-transmitting substrate, the first composition, and the second composition prepared in the steps (1) and (ii) will be described. (Light-transmitting substrate) The light-transmitting substrate of the present invention is not particularly limited as long as it satisfies the physical properties of the light-transmitting substrate which can be used as an optical film, and can be appropriately selected and used. A cellulose triacetate, a polyethylene terephthalate or a cycloolefin polymer used in a hard coat film or an optical film is known. The average light transmittance ' of the light-transmitting substrate in the visible light region of 380 to 780 nm is preferably 50% or more, more preferably 70% or more, and particularly preferably 85% or more. Further, the measurement of the light transmittance is carried out by using an ultraviolet-visible spectrophotometer (for example, UV-3100PC manufactured by Shimadzu Corporation) at a temperature measured at room temperature or in the atmosphere. Further, the light-transmitting substrate may be subjected to a saponification treatment or a surface treatment such as a primer. Further, an additive such as an antistatic agent 099141183 18 201128216 may be added to the light penetrating substrate. The thickness of the light-transmitting substrate is not particularly limited, but is usually about 20/xm to 300/mi, preferably 4 〇/mi to 2 〇〇 gm. (The curable resin composition for the first hard coat layer) The curable resin composition for the first hard coat layer contains the reactive first resin and the -(iv)' and does not contain the subtractive particle and the low refractive index resin. Or even if the resin containing a low refractive index is 5.0 mass % or less with respect to the mass of the first resin, the viscosity μ1 is 5 mPa · s or more. The first composition does not contain low-refractive-index fine particles and a low-refractive-index resin, or even contains a low-refractive-index resin, and has a specific viscosity as described above with respect to the mass of the first-resin, and is described later. The two compositions contain a low refractive index component and have a specific viscosity, and the two components are adjacent to each other in a manner that the second composition is located closer to the side of the light transmissive substrate than the second composition. Simultaneous coating, and when the first composition and the second composition are hardened to form the Hc layer, the interface of the opposite direction from the opposite side of the light-transmitting substrate is penetrated in the film thickness direction of the HC layer. The distribution of the low refractive index component of the substrate is gradually reduced. When the low refractive index component is a low refractive index microparticle, the low refractive index microparticle distribution as shown in FIG. 1 is obtained. From the viewpoint of moderately suppressing the mixing with the second composition =, it is preferable that the viscosity of the yttrium and the sputum is from the viewpoint of mixing with the second composition =, preferably oil s or more, more preferably i 〇 mpa · , and x viscosity is extracted from the two coatings. The viewpoint of the property is preferably 95 mPa · S ^ , more preferably 5 Ql JlPa · s or less, and particularly preferably 3 GmPa · s 099141183 19 201128216 or less. Further, the viscosity μ2 of the second composition minus the value of μ1 (hereinafter also referred to as "viscosity difference") is 30 mPa·s or less. The viscosity difference is preferably from 15 mpm or less, from the viewpoint of suppressing the mixing enthalpy and the formed surface.

HhnPa · s below. Further, the viscosity μ1 of the first composition and the viscosity μ2 of the second composition are preferably greater than the coating property, and the viscosity of the first composition and the second composition described later is, for example, used. Anton Paar company's trade name MCR3〇1, and the measuring fixture: 卯5〇, according to the measured temperature of 25 ° C, the cutting speed of 1 〇〇〇〇 [1/3] of the strip ^ '"', will The composition of the measurement object can be measured by dropping an appropriate amount onto the platform. The first composition does not contain low refractive index fine particles and a low refractive index resin, or even if the low refractive index resin is contained, the mass is relative to the first resin. From the viewpoint of exhibiting antireflection performance, such a low refractive index component is preferably present only on the interface of the HC layer on the opposite side of the light transmissive substrate and its vicinity. If the low refractive index component of the entire HC layer is uniformly hooked, the antireflection performance of the optical film is not sufficiently exhibited, and there is a possibility that the hardness of the layer may not be sufficiently exhibited. The second composition described later has a majority distribution of low refractive index components. The effect of the interface and its extension or the like. Even if the first composition contains a low refractive index resin, the optical film can obtain sufficient antireflection properties if it belongs to the above amount. The amount of the low refractive index resin is preferably 1% by mass or less based on the mass of the first resin. (First resin) 099141183 201128216 The first resin is reactive and hardened to become a component of the HC layer matrix. It is characterized in that polymerization or crosslinking is caused between the first resin and the second resin described later by light irradiation or heating. The first resin may be photohardened by light irradiation such as ultraviolet rays. The resin may be a thermosetting resin which is cured by heating. In the case of the first resin-based photocurable resin, the first resin preferably has a polymerizable unsaturated group, and more preferably has free radiation hardening. Specific examples thereof include ethylenically unsaturated bonds such as (fluorenyl) acryl fluorenyl group, vinyl group, and allyl group, and epoxy groups, etc. When the first resin is thermally hardened In the case of a resin, the first resin may, for example, be a group such as a thiol group, a thiol group, an amine group, an epoxy group, a propylene group, an isophthalate group or an alkoxy group. From the viewpoint of improving the hardness of the HC layer by the crosslinking reaction, it is preferred that the number of reactive groups in one molecule is two or more, and more preferably three or more. The first resin of the photocurable resin is conventionally used. A photocurable resin which can be a substrate of the HC layer is known, and a polyfunctional monomer such as pentaerythritol triacrylate (PETA) or dipentaerythritol hexaacrylate (DPHA) is preferably used. For the resin, for example, a compound having an epoxy group and a binder epoxy compound described in JP-A-2006-106503 can be used. Further, Japanese Patent Laid-Open No. 2008-165041, No. 099141183 21 201128216 can also be used. The thermosetting resin described. From the viewpoint that the viscosity of the first-component viscosity μ1 is easily adjusted, the molecule S of the ruthenium resin is preferably 500 or more, more preferably more than 1 Å. Further, from the viewpoint that the viscosity of the first composition is relatively easy to adjust, the upper limit of the molecular weight of the first resin is preferably 150,000 or less, more preferably 5 Å or less, and particularly preferably 2 Å or less. By setting the molecular weight of the first resin within this range, it is possible to suppress low-refractive-index fine particles or low-refractive-index trees contained in the second composition described later, and it is easy to diffuse uniformly in the entire HC layer. Most of the interface side of the opposite side of the HC layer of the light-transmitting substrate is present. The resin having a molecular weight of more than 1,000 is preferably, for example, a polymer D containing a polyalkylene oxide chain described in Patent Document i or a product name of BEAMSETDK Bushin Nakamura Chemical Industry Co., Ltd. 1; The trade name of the hardened urethane acrylate oligomer is Nh oligomer U-15HA, and the trade name of the Japanese synthetic chemical industry (product) is UV l7〇〇B. From the viewpoint of suppressing occurrence of interference fringes at the interface between the HC layer and the substrate, it is preferable that the first resin contains a resin having a molecular weight of 1 Å or less. Such a resin having a molecular weight of 1,000 or less is preferably as described above for PETA or DPHA. When the first resin is used in combination with a resin having a molecular weight of 1,000 or less and a resin other than the above (that is, a resin having a molecular weight of more than 1,000), the resin content of a molecular weight of 1 Torr or less is appropriately adjusted as long as it is blended with a desired viscosity or the like. However, the resin content of the molecular weight of 1000 or less is preferably 50 to 100% by mass based on the total mass of the first resin, and most of the 099141183 22 201128216. Further, from the viewpoint of the hardness of the HC layer, the molecular weight of the first resin is preferably 5,000 or less. Further, for the first resin, for example, the binder C described in Patent Document 1 can be used. The commercially available product of the binder C is commercially available as an amine phthalate acrylate having a weight average molecular weight of less than 10,000 and having 2 or more polymerizable unsaturated groups, such as a product name AH manufactured by Kyoei Corporation Chemical Co., Ltd. -600, AT-600, UA-306H, UA-306T, UA-3061, etc.; Japan Synthetic Chemical Industry Co., Ltd. Manufacturer name UV-3000B, UV-3200B, UV-6300B, UV-6330B, UV-7000B, etc. ; Arakawa Chemical Industry Co., Ltd. trade name BEAMSET 500 series (502H, 504H, 550B, etc.); New Nakamura Chemical Industry Co., Ltd. trade name U-6HA, UA_32P, U-324A; East Asian synthetic (share) system name M_9〇5〇 and so on. The content of the first resin can be used as appropriate, and the total solid content of the first composition is preferably 40 to 90% by mass, more preferably 5 to 8% by mass. The first resin may be used singly or in combination of two or more. Further, the first resin may be the same as or different from the basic skeleton, the functional group type, the functional group number or the molecular weight of the second resin contained in the second composition described later. (First solvent) The first solvent has a function of adjusting the viscosity by dissolving or dispersing the solid portion of the above-mentioned first resin in the first composition. 099141183 23 201128216 The first solvent is one or more selected from the group consisting of the solvents used in the composition for a hard coat layer. For example, acetophenone (MEK), methyl isobutyl ketone (MIBK), fluorene or the like; or alcohols, ketones, esters, _hydrocarbons, such as those described in JP-A No. 5-316428 , aromatic hydrocarbons, ethers, etc. In addition to the above, the first solvent may also be used, for example, ethers such as tetrahydrofuran, hydrazine, 'a beta-anecane, dioxapentane and diisopropyl ether; and glycerol, propylene glycol monoterpene ether (PGME) , glycols such as glycerol acetate, and the like. From the viewpoint of adjusting (increasing) the viscosity of the first composition, the first solvent preferably has a high viscosity, preferably at least ImP·s or more, more preferably at least 2 mP·s. Such a solvent for improving the viscosity of the first composition is preferably a propylene glycol monoterpene ether (PGME) or the like. Further, by appropriately selecting the type of the first solvent and the kind of the light-transmitting substrate, the first gluten agent also has a function of allowing a part of the first resin to permeate into the light-transmitting substrate. In the present invention, by using (or using) a solvent 1 (permeable solvent) permeable to a light-transmitting substrate, the first resin can be easily inhibited from penetrating into the substrate to cause interference fringes. It can also improve the adhesion. Further, the term "permeability" as used in the present invention means a property of permeating a light-transmitting substrate, and further encompasses the concept of swelling or wetting a light-transmitting substrate. Specific examples of the osmotic solvent include ketones such as acetophenone, methyl isobutyl ketone and cyclohexanone; esters such as methyl acetate, ethyl acetate and butyl acetate; and halogenated hydrocarbons and phenols. 099141183 24 201128216 When the light penetrating substrate is a solvent used in the case of cellulose triacetate (TAC), and when the light penetrating substrate is polyethylene terephthalate (PET), The solvent is a solvent as described in JP-A-2005-316428. In particular, the solvent used in the case where the light-transmitting substrate is cellulose triacetate (TAC) is preferably decyl acetate, ethyl acetate, butyl acetate, and oxime. The first solvent may be the same as or different from the second solvent contained in the second composition described later. In the first composition, the mass ratio of the first resin is 100 to 400% by mass based on the mass of the first solvent, and is formed on the opposite side of the light-transmitting substrate from the HC layer. The viewpoint of the distribution of the low refractive index component is preferred. In this case, in the second composition described later, the total mass ratio of the low refractive index component to the second resin is 100 to 400% by mass based on the mass of the second solvent. (Other components of the curable resin composition for the first hard coat layer) In addition to the above components, the first composition may contain, for example, a polymerization initiator, an antistatic agent, or the like for the purpose of imparting functional properties. A tackifier, a reactive or non-reactive paint, and the like. (Polymerization Initiator) A radical and a cationic polymerization initiator may be appropriately selected as needed. These polymerization initiators are decomposed by light irradiation and/or heating, and produce radicals or cations of 099141183 25 201128216, which are subjected to radical polymerization and cationic polymerization. The radical polymerization initiator may, for example, be irgacure 184 (1-hydroxy-cyclohexyl-phenyl-ketone) manufactured by Ciba. When a photocationic polymerizable first resin is used as in the case of the first resin containing an epoxy group, a cationic polymerization initiator described in, for example, JP-A No. 2, 〇 〇 〇 〇 。 can be used. When a polymerization initiator is used, the content thereof is relative to the total solid content of the first composition, and preferably 1 to 1 () mass 0 / Torr. (Antistatic agent) The antistatic agent may be a conventionally known antistatic agent, and for example, a cationic antistatic agent such as a quaternary cation described in Japanese Patent Laid-Open Publication No. 20-264221, or tin-doped oxidation may be used. Microparticles such as indium (IT〇). When an antistatic agent is used, the content thereof is preferably from 3 〇 to 6 〇 by mass based on the total solid content of the first component. (Tackifier) In the first composition, a viscosity-increasing agent may be used for the purpose of viscosity adjustment, and a conventionally known tackifier may be used, and for example, a protein system such as: egg:: = salt; Polyethylene glycol, aliphatic decylamine, acrylate hydrazine, 1 ice ketone, sodium polyacrylate, etc., _ _ _, = 甲 丁 妇 妇 妇 妇 酸酐 酸酐 酸酐 ( ( ( ( ( 以及 以及 以及 以及 以及 以及 以及 以及 以及Adhesive. Other examples include inorganic tackifiers such as micro and talc. 99石夕,岭土,膨润. 099141183 26 201128216 The above-mentioned organic tackifiers and inorganic enamel tackifiers may be used singly or in combination of two or more. When the tackifier is used, the content thereof is preferably 0.1 to 10% by mass based on the total solid content of the first composition. (Co-coating agent) The leveling agent has an effect of imparting such properties as coating stability, slipperiness, antifouling property or scratch resistance to the surface of HC. As the leveling agent, a coating agent such as a fluorine-based, polyfluorene-based or acrylic-based one which is conventionally used for an antireflection film can be used. For example, a fluorinated coating agent such as a DIC (product) MEGAFAC® series (MCF350-5), which has no free radiation curable group, or a Shin-Etsu Chemical Co., Ltd. product, 22_163Α, can be used for free radiation hardening. The base polyoxynizer is a uniform coating agent. When the leveling agent is used, the case where the fluorine-based leveling agent is contained is 'the mass of the first resin is 5.0% by mass or less, and preferably 帛〇1 to 3% by weight. In the case of the above-mentioned leveling agent, it is preferable to use 0.5 to 10% by mass based on the mass of the first resin. Further, from the viewpoint of the hardness of the HC layer, the total coating agent content is preferably 5% by mass or less based on the total mass of the solid content of the first composition and the second composition. The first composition is usually prepared by mixing a first resin and other optional polymerization starting materials in a first solvent in accordance with a general preparation method to carry out dispersion treatment. For mixing and dispersion, 099141183 27 201128216 paint shaker or bead mill can be used. (The curable resin composition for the second hard coat layer) The curable resin composition for the second hard coat layer used in the method for producing an optical film of the present invention contains a low refractive index of 10 to 300 nm from the average particle size. One or more kinds of low refractive index components are selected from the group consisting of particles and a low refractive index resin, and the second resin having a reactivity and the second solvent have a viscosity of 5 mPa·s or more, and the viscosity difference is 3 〇 mPa · S. the following. The second composition contains a low refractive index component having the above specific viscosity, and the two components are adjacent to each other in such a manner that the first composition is located closer to the light transmissive substrate than the second composition. Simultaneous application is carried out, whereby when the first composition and the second composition are hardened to form an HC layer, an interface from the opposite side of the light-transmitting substrate is formed in the film thickness direction of the hc layer. The side of the light-transmissive substrate side has a distribution in which the low refractive index component gradually decreases. When the low refractive index component is a low refractive index fine particle, the low refractive index fine particles are distributed as shown in FIG. The viscosity μ2 of the second composition used in the method for producing an optical film of the present invention is preferably 5 mPa·s or more, and more preferably i〇mPa, from the viewpoint of moderately suppressing mixing with the first composition. s above. The viscosity is preferably from 1 〇〇 mPa·s or less, more preferably not more than 50 mPa·s, and particularly preferably less than, for example, from the viewpoint of improving coatability. Further, the viscosity of the first composition is μΐ. The viscosity μ2 of the second composition is preferably from the viewpoint of coatability, and μ2 is larger than μΐ. 099141183 28 201128216 (low refractive index fine particles) Low refractive index used in the method for producing the first optical film of the present invention The microparticles impart antireflection properties to the optical film of the present invention by the interface side of the opposite side of the light-transmitting substrate of the HC layer. In addition to the low refractive index microparticles, the latter can be used in combination. Low-refractive-index resin. The low-refractive-index microparticles refer to a refractive index of 1204.45. The low-refractive fine-particle micro-system can use the particles used in the conventionally known low-refractive-index layer, for example, the hollow dioxo described in 2 Micro-particles, or metal fluoride fine particles such as LiF (refractive index magnesium fluoride, refractive index (3) ^ refractive index 1.38), Na3A1F6 (cryolite, refractive index 1 33), and secret (4) refractive index 1.36). Rate microparticle system The second resin or the first line of fat may be subjected to a crosslinking reaction'. The organic component of the surface of the salty material or the thermosetting group may be coated. The method of the (4) method may use the Japanese patent special employment _165_ The reactive preparation method described in the publication No. 5, the average particle diameter of the low refractive index fine particles is set to be 3GG_ or less from the viewpoint of preventing the fog value of the layer from rising. In the low refractive index fine particle system, the (four) particles are In other cases, since the voids are required, the average particle diameter is from the viewpoint of exhibiting the effect of reducing the binder. The average particle diameter of the low refractive index fine particles is preferably UMQGnm, more preferably 099141183 29 201128216 low refractive index. The content of the fine particles can be used as long as it is appropriately adjusted, and is preferably from 0.01% by mass, more preferably from 65 to 90% by mass, based on the total mass of the second resin contained in the second composition. Resin resin) Low refractive index resin (4) Recycling resin for county job. In addition to low refractive index resin, the above low refractive index microparticles can also be used in combination. Since the coating film can be a component of the sink layer-partial portion after the film formation, it is also possible to use a low refractive index resin for the second resin to be described later. Low refractive index (four) oblique use is known to have a photocurable group or thermosetting. A fluorine-containing resin such as a reactive group or a gas-containing resin having no reactive group, etc. The fluorine-containing resin having a photocurable group may, for example, be ethylene dichloride, tetra pent ethylene or hexafluoropropylene. Fluorinated olefins such as perfluorobutadiene, perfluoro-2, dimethyl], 3-dicarbazole, etc. Other fluorine-containing resins having a photocurable group are, for example, (meth)acrylic acid Fluorine (10), (meth) acrylic acid diced, 3,3 • pentafluoropropyl vinegar, (methyl succinyl acetophenone) ethyl vinegar, (mercapto) acrylic acid tank hexyl ketone, vinegar, (曱B) Glycolate_2_(Perfluorooctyl)Benergy, (Mercapto)-pro-glycolic acid_2_(all') Ethyl-α-fluorodecyl acrylate A, trifluoromethyl acrylate a (meth)acrylic acid vinegar compound; i molecule having a fluorinated alkyl group, a fluorocycloalkyl group or a fluorinated alkyl group having at least three carbon atoms of from 1,091,411,183, 2011,282,816, and a fluorine atom, and 2 (Yue-yl) fluorine-containing polyfunctional (Yue-yl) acrylate compound Bing Xixi group and the like. The fluororesin having a thermosetting group can be, for example, a 4-fluoroethylene-perfluoro-alkylene ether copolymer, a fluoroethylene-hydrocarbon-based vinyl ether copolymer, and an epoxy resin or a polyamine phthalate resin. Fluorine modified materials such as cellulose resin, phenol resin and polyimine resin. Further, a polymer or a copolymer of a fluorine atom-containing polymerizable compound described in JP-A-2010-122603, and a polyvinylidene fluoride-containing vinylidene fluoride copolymer may be used. The molecular weight of the low refractive index resin is not particularly limited and may be appropriately selected, but from the viewpoint of adjusting the viscosity of the second composition, it is preferably 5 Å to 5 Å. The content of the low refractive index resin contained in the second composition may be appropriately adjusted, and when the low refractive index tree is used as the second resin described later, the total solid content of the second composition is Preferably, it is 7 〇 to 1 〇〇 mass 0/〇. (Second Resin) The second resin is a component which has reactivity and is hardened to become a matrix of the HC layer. The second resin has a polymerization or crosslinking reactivity between the second resin and the first resin by light irradiation or heating. The second resin may be a photocurable resin which is cured by light irradiation such as ultraviolet rays, and may be a thermosetting resin which is cured by heating. When the second resin-based photocurable resin is sturdy, the first item has a polymerizable property and a 099141183 31 201128216 basis, and more preferably has an epitaxial radiation-curable unsaturated group. Specific examples thereof include an ethylenically unsaturated bond such as a (fluorenyl) acrylonitrile group, a vinyl group, and an allyl group, and an epoxy group. In the case of the second resin-based thermosetting resin, the thermosetting group of the second resin may, for example, be a hydroxyl group, a carboxyl group, an amine group, an epoxy group, a glycidyl group, an isocyanate group, or an alkoxy group. Wait. The second resin is preferably one having two or more curable groups per molecule, and more preferably three or more, from the viewpoint of improving the hardness of the HC layer by the crosslinking reaction. As the second resin, those exemplified in the above first resin can be used. The content of the second resin is preferably 60 parts by mass or less based on the total solid content of the second composition, as long as it is appropriately adjusted and reused, and when the second tree has a low refractive index resin The case 'may be 100% by mass or less relative to the total solid content of the second composition. The second resin may be used singly or in combination of two or more. (Second solvent) The second solvent has a function of adjusting the viscosity by dissolving or dispersing a solid component such as the above-mentioned low refractive index fine particles or the second resin in the second composition. As the first solvent, those exemplified in the above first solvent can be used. (Other components of the curable resin composition for the second hard coat layer) The second composition may further contain, for example, a polymerization initiation, in addition to the above-described components, for the purpose of imparting functionality, like the first composition. Agent, anti-static 099141183 32 201128216 Electrolyte, tackifier, antifouling agent, and reactive or non-reactive (polymerization initiator) θ temple. As the polymerization initiator, those exemplified in the above first composition can be used. * When the polymerization initiator is used, the content is preferably from 1 to 5% by mass based on the total solid content of the second composition. (Antistatic Agent) As the antistatic agent, those exemplified in the above first composition can be used. When the antistatic agent is used, the content is preferably 30 to 60 mass 〇/〇 with respect to the total solid portion of the second composition. (Tackifier) The support d viscous d system can be exemplified by the above first composition. Preferably, the tackifier contains 1% relative to the total solids of the first composition, preferably ~1% by mass. (Antifouling agent) The antifouling agent prevents the outermost surface of the optical film from being soiled, and also imparts scratch resistance to the layer. The antifouling agent can be used in both the first composition and the second composition, and the antifouling property can be effectively exhibited from a small amount. The antifouling agent is preferably contained only in the antifouling agent. In the second composition. As the antifouling system, a conventionally known antifouling agent (antifouling agent) such as a fluorine compound or a lanthanoid compound can be used. The anti-pollution agent described in Japanese Laid-Open Patent Publication No. 2007-264279 is exemplified. 099141183 33 201128216

It is preferable to use a commercially available antifouling agent. Examples of the antifouling agent (non-reactive) of such a commercially available product are MEGAFAC® series manufactured by DIC, for example, trade names MCF350-5, F445, F455, F178, F470, F475, F479, F477, TF1025, F478, and F178K, etc.; TSF series made by TOSHIBA SILICONE Co., Ltd.; X-22 series and KF series manufactured by Shin-Etsu Chemical Co., Ltd.; and Silaplane® series made by CHISSO. The antifouling agent (reactivity) of the commercially available product may be, for example, a brand name of the company, which is manufactured by Shin-Nakamura Chemical Industry Co., Ltd., and a trade name of SUA1900L6; a product name of Ebecryl 350, a product name of Ebecryll 360, and a product name of KRM7. 〇39; Japan Synthetic Chemical Industry Co., Ltd. UT3971; DIC (share) system name DIFENSA TF30 (H, trade name DIFENSA TF3000 and trade name DIFENSA TF3028; Coron Chemical Chemical Co., Ltd. under the trade name LIGHT-PROCOAT AFC; 3000; Shin-Etsu Chemical Co., Ltd. product name KNS5300; GE TOSHIBA SILICONE (stock) product name UVHC1105 and UVHC8550; and Japanese paint (stock) product name ACS_1122, etc. (Co-coating agent) The above-mentioned first composition is exemplified. The leveling agent can be contained in both the first composition and the second composition. From the viewpoint of the efficiency of the coating agent function, it is preferable to include only In the case of using a leveling agent, the content of the fluorine-based leveling agent is 5.0% by mass or less based on the mass of the second resin, and preferably 〇1 to 3 () 099141183 34 201128216 quality% In the case of the leveling agent other than the fluorine type, it is preferably used in an amount of from 0.5 to 10% by mass based on the mass of the second resin. The method of preparing the second composition may be a method exemplified in the above first composition. (Other functional layer composition) In the method of producing the optical film of the present invention, at least one of the first and second compositions is provided on one side of the light-transmitting substrate in the step of (iii) simultaneous coating. The coating may be applied at the same time, and other functional layers may be appropriately disposed to match the performance required of the optical film, and other functional layer compositions may be prepared. Other functional layers may be, for example, an antistatic layer and an anti-static layer. Further, as will be described later, when the other functional layer component is applied from the side of the light-transmitting substrate in the state in which the first and second components are adjacent to each other, the function can be set in accordance with the function. A suitable coating position. In the method for producing an optical film of the present invention, in the step of (iii) applying the first composition and the second composition simultaneously, the first and second compositions are simultaneously coated. method, In the case where simultaneous coating can be carried out, the rest is not particularly limited, and a conventionally known method can be used, for example, a method using the extrusion die coater shown in Fig. 3. The method for producing an optical film is (iii) In the step of simultaneously applying the first composition and the second composition, the wet film thickness of the coating film of the first composition is set to T1, and the wet film thickness of the coating film of the second composition is set to T2. When T2/T1 099141183 35 201128216 is set to 0.01 to 1, from the viewpoint of improving the antireflection property of the optical film with high efficiency, it is preferable that the low refractive index component exists in the HC layer in the film thickness direction of the HC layer. The interface side on the opposite side of the light-transmitting substrate is more on the side of the light-transmitting substrate, and on the side closer to the light-transmitting substrate, the distribution of the low-refractive-index component is less. From the interface on the opposite side of the light-transmitting substrate toward the side of the light-transmitting substrate, the low refractive index component is gradually reduced, and in the film thickness direction of the hard coat layer, The interface on the opposite side of the permeable substrate is in the region up to 70% of the dry film thickness of the hard coat layer There is the low refractive index distribution component of the total summer 7〇~100%. Here, the term "turbidity and wet film thickness" means the thickness of the coating film in a state before the solvent is volatilized in the composition immediately after application, and the (volume/(four) area of the (four) composition on the light-transmitting substrate) Can be obtained. Further, when the coating of the first and second compositions is carried out using a die coating head as shown in FIG. 3, it belongs to the between the die coater head 4 and the light penetrating resin substrate. The coating height of the distance is 8 Q, and the coating film of the first and second compositions at the time of simultaneous multilayer coating is applied to the light-transmitting resin substrate 1 合, and preferably has a coating height of 8 〇. ((2 times the thickness of 90) relationship. By performing simultaneous multi-layer coating while maintaining such a relationship, the coating droplets formed between the light-passing resin substrate 1G and the mold coating head are stabilized. In particular, the thicker the layer formed by the application of the coating, the more the film becomes thinner, the more likely it is to become unstable, which is the cause of spots and streaks on the coated surface, which causes deterioration in appearance, but by maintaining the above-mentioned coating height 80 and thickness 90. The relationship can be easily stabilized by the coating droplets. In addition, the "dip liquid 099141183 36 201128216" refers to the liquid retention generated between the coating device and the substrate. The above other functional layer composition may be applied simultaneously with the first and second compositions, or may be additionally applied in addition to the first and second compositions. In the case of simultaneous coating, the coating position can be set in accordance with the function of the first and second compositions in the state of being adjacent to each other from the side of the light-permeable substrate. . For example, when the antistatic layer composition is applied simultaneously with the first and second compositions, it is only on the upstream side of the light transmissive substrate transport direction 140 in the die slit 51 of FIG. 3 (ie, A third slit (not shown) is provided on the left side of the slit 51 in Fig. 3, and the antistatic layer composition and the first and second compositions are simultaneously coated. Further, for example, when the composition for an antistatic layer, the first and second compositions, and the composition for an antifouling layer are simultaneously applied, as long as the antistatic layer is coated on the left side of the slit 51 in FIG. The fourth slit (not shown) for the composition is provided on the right side of the slit 52 as a fourth slit (not shown) for applying the composition for the antifouling layer, and the four compositions can be used. The material is applied at the same time. The drying method of the step (iv) is, for example, drying under reduced pressure or heating, and a method of combining the drying and the like. Further, when drying is carried out under normal pressure, it is preferred to carry out drying at 30 to 110 °C. In the present invention, prebaking is not performed before the step (iv) is carried out (i.e., before the coating film is dried). For example, when the first or second solvent is used in the case of decyl isobutyl ketone, it is usually carried out at a temperature ranging from room temperature to 80 ° C, preferably 40 ° C to 70 ° C, for 20 seconds to 3 099141183 37 201128216 minutes. Preferably, it is dried for a period of 30 seconds to 1 minute. Further, in the present invention, the term "drying" in the step (iv) means that even if the drying is performed, the hardening of the layer is not sufficiently sufficient to be used as a product (for example, the pencil hardness test specified in JIS K5600-5-4 (1999). In the case of the case where the first resin and the second resin contain a thermosetting resin, the heating performed after the drying is performed in the case of the 4.9N load. This heating allows the layer to be cured at a temperature sufficient for the product (the hardness "H" or higher in the pencil hardness test described above). The light irradiation method of the (iv) step mainly uses, for example, ultraviolet rays, visible light, electron beams, or free radiation. In the case of ultraviolet curing, ultraviolet rays emitted from light such as an ultrahigh pressure mercury lamp, a squirting mercury lamp, a low pressure mercury lamp, a carbon arc, an air arc or a metal halide lamp are used. The amount of irradiation of the energy ray source is 5 〇 to 3 〇〇 mJ/cm 2 in terms of an integrated exposure amount of an ultraviolet wavelength of 365 nm. In the present invention, the prebaking is not carried out, but the light irradiation or heating for hardening (formally hardening) the coating film is carried out after the coating film is dried. Thereby, the low refractive index component contained in the second composition is more likely to penetrate through the light in the film thickness direction of the HC layer than on the opposite side of the opposite side of the light-transmitting substrate of the HC layer. On the side of the substrate, and the light transmissive substrate is deeper, the distribution of the low refractive index component is less. The interface from the opposite side of the #S penetrating substrate toward the light-transmitting group. The low refractive index component of the material side is gradually reduced, and the occurrence of interference fringes caused by the difference in refractive index between the low refractive index component and the resin of the HC layer in the hc layer can be obtained, and the interface between the HC layer and the substrate occurs. Interference pattern, and 099141183 38 201128216 Optical film with excellent visibility. Furthermore, in order to pre-bake in an unknown state, the coating film is dried, and then light irradiation or heating is performed, so that it is purely pre-supplied: it will be lifted to the matching layer under the condition of being improved. Adhesion to a layer adjacent to the light-transmissive substrate or layer. Furthermore, it is necessary & pre-baked, and therefore, it is excellent in productivity in the case of hardening by 2 degree light irradiation such as prebaking and formal hardening. (Optical Film) The present invention (4) is thinly obtained by the manufacturer, and as shown in Fig. i, at least the Hc layer 2 is provided on the surface side of the light-transmitting substrate 10. The optical film of the present invention is produced by the above-described production method so that the low refractive index fine particles and/or the low refractive index resin ' contained in the second composition are present in the film thickness direction of the HC layer. The interface side on the opposite side of the light-transmitting substrate is more on the side of the light-transmitting substrate, and the smaller the distribution on the side of the light-transmitting substrate, the less Hc is obtained, and the suppressed Hc can be obtained. The occurrence of interference fringes in the layer due to the difference in refractive index between the low-refractive-index microparticles and/or the low-refractive-index resin and the resin of the Schematic Hc layer, and the interference pattern at the boundary between the HC layer and the substrate, and An optical film with excellent visibility. Furthermore, since the coating film is dried without pre-baking, and then hardened by light irradiation or heating, drying, light irradiation or heating is performed instead of pre-baking. In the case of hardening, there is no such thing as the case where the low-refractive-index layer and the iiC layer are formed by successive double-layer coating, or the simultaneous coating is formed as in Patent Document 2, and it is clear that there is no case in the case of 99141183 201128216. The layer interface has anti-reflection function, and can suppress the occurrence of interference fringes between the layers while maintaining the haze value, the total light transmittance, and the non-spotted surface shape, and the adhesion is improved, and by the substrate In the vicinity, the ratio of the hard coat composition having the same refractive index as the refractive index of the substrate is increased, and the occurrence of interference fringes between the hard coat layer and the substrate is suppressed, and the adhesion is excellent. The optical film of the present invention may be coated with other functional layer compositions to form other functional layers as described in the above production method, for example, when antistatic is applied to the light transmissive substrate side of the first composition. When the composition for the layer is formed to form an antistatic layer, it is formed as a layer of the antistatic layer 140 and the HC layer 20 from the side of the light-transmitting substrate 1 as shown in FIG. Further, as shown in Fig. 5, an anti-fouling layer 150 may be provided on the opposite side of the HC layer from the light-transmitting substrate. The dry film thickness of the HC layer (hereinafter also referred to as "film thickness") can be appropriately adjusted in accordance with the desired properties. For example, the film thickness is preferably 20 μm. The film thickness of the other functional layers can be appropriately adjusted. For example, the film thickness of the antistatic layer is preferably 0.05 to 5 μm. The film thickness of the antifouling layer is preferably 〇. The optical film of the present invention can adjust the reflectance by appropriately adjusting the type and content of the low refractive index fine particles and the low refractive index resin of the second composition, and adjusting the reflectance of the incident light. The reflectance is preferably from 1 to 3.75, more preferably from 1 to 3.4. 099141183 40 201128216 The reflectance is based on the product name V7100 UV-Vis spectrophotometer, and the product name VAR-7010 Absolute reflectance measuring device manufactured by 分本分光(股). °, the polarizer is N-polarized, the measurement wavelength range is 380 to 780 nm', and a black tape is bonded to the optical film on the side of the TAC substrate, and this is placed in a device and measured. Further, the average value of the measurement results obtained by using the measurement wavelength range is regarded as the reflectance. The haze value of the optical film of the present invention can be appropriately adjusted in accordance with the desired properties, preferably 〇1 to 1.0%, more preferably 〇?~〇 4%. The dentate sf value can be measured by JIS Κ7136 using the Resident Murakami Color Research Institute. In a preferred embodiment of the optical film of the present invention, an optical layer of a hard coat layer is provided on one side of the light-transmitting substrate, and in the film thickness direction of the hard coat layer, the primary refractive index particles are present in the above (4) The transmissive substrate (4) is more on the side of the interface side than the side on the side of the light-transmitting substrate 1 and the lower the amount of the low-refractive-index particles is, the less the amount of the low-refractive-index particles is present. The interface on the opposite side of the substrate faces the side of the light-permeable substrate, and the low-refractive-index component is gradually reduced, and there is no layer interface at the surface of the light-coated substrate. In the checkerboard adhesion test, the adhesion ratio can be made % to (10)%. As shown in Fig. 1, by using ^# & into such a low-refractive-index microparticle as a cloth in the HC layer, it has an anti-reflection function, and the 持^ 准 持 value, total light transmittance And ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The ratio of the composition of the same refractive index to 099141183 41 201128216 inhibits the occurrence of interference fringes between the hard coat layer and the substrate, and an optical film excellent in adhesion can be obtained. The layer interface in the hard coat layer is referred to as shown in Fig. 2, and an interface (boundary) occurs in the hardened portion of the composition in the layer. Specific examples of the layer interface include the boundary of the hardened portion of the two compositions shown in Fig. 9 which will be described later. In a preferred embodiment of the optical film of the present invention, the film thickness direction of the hard coat layer may be 'from the opposite side of the light-transmitting substrate to the dry film thickness of 70 In the region up to %, 70 to 100% of the total amount of the low refractive index fine particles are present. Thereby, the antireflection property of the optical film can be improved efficiently. The total light transmittance (?) of the optical film of the present invention is preferably from 90% or more, more preferably from 92% or more, from the viewpoint of transparency. The total light transmittance of the optical film can be measured by using a measuring instrument having the same haze value according to JIS K7361. (Polarizing Plate) The polarizing plate of the present invention is characterized in that a polarizing plate is provided on the side of the optical film opposite to the light-transmitting substrate of the hard coat layer. Fig. 6 is a schematic view showing an example of the layer constitution of the polarizing plate of the present invention. The polarizing plate 2 shown in FIG. 6 is provided with an optical groove film 1 in which an hc layer 2 is provided on a light-transmitting substrate 1A, and a polarizing plate 180' in which a protective film 160 and a polarizing layer 170 are laminated. A polarizing plate 180 is provided on the side of the opposite side of the light-transmitting substrate 1 of the film 1 # HC layer 20. 099141183 42 201128216 Externally, in the case of the opposite side of the hard coating, the permeable substrate side arranging sheet is not only optical _ and the polarizing film is a singularity, but also constitutes a component constituting the optical _ The situation of the components of the Qian Guang film. In the case where the polarizing plate of the present invention is used for a display panel, the display panel is usually disposed on the side of the polarizer. Further, in the case of the related optical film, if the above optical film is used, the other configuration of the polarizing plate of the present invention will be described with reference to the description of the optical film. (Polarizing Sheet) The eccentricity used in the present invention is based on the premise that _ has a predetermined polarization characteristic: the rest is not particularly limited, and a polarizer used in a liquid crystal display device can be used. The polarizer is in a form in which a predetermined polarizing characteristic is maintained for a long period of time, and the other restrictions may be made by, for example, only a polarizing layer, and the protective film may be attached to θ. When the protective film and the polarizing layer are bonded together, the protective film may be formed on both sides of the polarizing layer. The partial layer can usually be formed by using a film composed of polyethyl _ to be formed by a uniaxial stretching to form a complex of poly W alcohol and moth. 〇: 2: protective film: can protect There is no particular limitation on the rest of the above-mentioned layer and the month under which the desired light is transmitted. 099141183 43 201128216 The light transmittance of the protective film is preferably 80% or more, more preferably 90% or more in the visible light region. Further, the transmittance of the above protective film can be measured in accordance with JIS K7361-l (Test method for total light transmittance of plastic-transparent material). Examples of the resin constituting the protective film include a cellulose derivative, a cycloolefin resin, a polydecyl methacrylate, a polyvinyl alcohol, a polyimide, a polyarylate, and a polyethylene terephthalate. Ester and the like. Among them, a cellulose derivative or a cycloolefin resin is preferably used. The protective film may be composed of a single layer or a plurality of layers. Further, in the case where the protective film is laminated by a plurality of layers, a plurality of laminated layers of the same composition may be used, and a plurality of laminated layers having different compositions may also be used. Further, the thickness of the protective layer is such that the flexibility of the partial yarn of the present invention can be formed within a desired range', and the size of the polarizer can be changed by a predetermined range (10) by adhering to the polarizing layer. The remaining portion has no limitation of (4), but is preferably in the range of 5 to 200 / πη, more preferably in the range of 15 to 15 〇 Mm, and particularly preferably in the range of 30 to _m. If the thickness is thinner than 5, the size change of the polarizing plate of the present invention may become large. Further, if the thickness is 2, for example, when the polarizing plate of the present invention is subjected to cutting, there is a possibility that the processing chips are increased or the wear of the cutting blade is increased. The protection 臈 can also be a phase difference. By using the phase difference protective film, there is an advantage that the polarizing plate of the present invention forms the viewing angle compensating function of the display panel. 099141183 44 201128216 The protective film has a phase difference, and the rest is not particularly limited insofar as it exhibits the desired phase difference. Such a phenomenon is such that the protective film has a single-layer structure and contains an optical property exhibiting phase difference, a developing agent, a phase difference, and a resin composed of the above-mentioned resin. On the protective film, a structure in which a phase difference layer containing a refractive index anisotropic compound is laminated is formed, whereby a phase difference property is obtained. In the present invention, any of these aspects is suitable for use. (Display) The display of the present invention is characterized in that a display panel is disposed on the side of the optical film opposite to the light-transmitting substrate of the hard coat layer. The display may be, for example, an LCD, a PDP, an ELD (organic EL, inorganic), a CRT, or the like. The display is composed of a display panel of a viewer side member of the display and a back side member including a driving portion. In the case where the liquid crystal display is described as an example, the "display panel" is a member composed of two glass plates (for example, a color filter substrate and an array substrate) that block liquid crystal material, a polarizing plate, and an optical film of the present invention. As an example of the liquid crystal display, the "back side side member" is a member composed of a light source called "backlight", a drive circuit for controlling the LCD, a circuit for controlling the light source, and a casing. In this case, a liquid crystal display layer is composed of a backlight unit including a light guide plate or a diffusion film, and a polarizing plate, an array substrate, a liquid crystal layer, a color filter substrate, and a polarizing plate are sequentially laminated on the viewer side. And an optical film. 099141183 45 201128216 Another example of the above display PDP includes a front glass substrate and a rear glass substrate. The back glass substrate is disposed in a state in which a discharge gas is sealed between the surface glass substrate and the surface glass substrate. In the case where the display is PDp, the optical film is provided on the surface of the surface glass substrate or on the front panel (glass substrate or film substrate). The display device may be, for example, an ELD device that vaporizes a light-emitting body such as zinc sulfide or a diamine substance that emits light when a voltage is applied, and controls the voltage applied to the substrate to be displayed on the glass substrate, or A display such as a CRT that converts an electronic signal into light to produce an image that is visible to the naked eye. In this case, the above optical film is provided on the surface of the ELD device or the outermost surface of the CRT or the front panel thereof. [Examples] Hereinafter, the present invention will be further described by way of examples. The description of these does not limit the invention. The low-refractive-index microparticles are hollow cerium oxide microparticles (trade name: THRULYA8DAS (average particle diameter: 5 〇 nm, MIBK dispersion, solid fraction 20%) using a daily spheroidal catalyst. The first shank j 曰 (1) The brand name beamset DK1 (weight average molecular weight 2G 嶋, solid content 75%, mibk solvent) manufactured by Arakawa Chemical Industry Co., Ltd. is used. The first private sputum (2) is a pentaerythritol triacrylate manufactured by sulfonamide. A low-refractive-index resin having the first resin is a LINC-3A manufactured by Kyoei Chemical Co., Ltd. (the general formula (1) shown below is a tripropylene-based seventeen gas-powder-based group - 099141183 46 201128216 pentaerythritol (main a component), a mixture with pentaerythritol triacrylate). [Chemical Formula 1] General Formula (1)

,. -CH2—γ - CH2—〇一c-CH=CH2

CF3—CF

Ch2 Ο

The polymerization initiator was sold under the trade name IRGACURE (Irg) 184 manufactured by Nippon Ciba. The coating agent was a trade name of MCF35〇_5 (solid content: 5%) manufactured by DIC. The solvent used MIBK. As the light-transmitting substrate, a TAC substrate made of Fujifilm Co., Ltd., and a trade name of TD80UL (thickness 80 μm) were used. Further, the viscosity of the ruthenium composition and the first composition was MCR301 manufactured by Anton Paar Co., Ltd., and the composition of the measurement target was measured under the conditions of a measurement jig of pp50, a measurement temperature of 25^, and a shear rate of 10000 [l/s]. (Ink) A suitable amount was dropped on the platform and measured. The measurement of the dry film thickness was carried out by placing a sample of the measurement target on a glass using a product name DIGIMATIC INDICATOR CODE 215-403 manufactured by Mitutoyo. The abbreviations of the respective compounds are as follows: 099141183 47 201128216 ΡΕΤΑ: pentaerythritol triacrylate ΜΙΒΚ: methyl isobutyl ketone oxime: isopropyl alcohol TAC. Diethyl styrene cellulose (modulation of the hardenable resin composition for the first hard coat layer) The first domain component is blended, and (4) the first hard coat resin composition 1 and 2, and the second hard coat resin composition (the first hard coat layer is made of a curable resin) 1) BEAMSETDKi: 64.72 parts by mass (48.54 parts by mass of solid content) Irgl84 : 1.94 parts by mass MCF350-5 : 0.97 parts by mass (5 parts by mass of solid content) MIBK : 32·36 parts by mass (first hard coat) Hardening resin composition for layer 2) ΡΕΤΑ : 75.49 parts by mass (56 62 parts by mass of solid content)

Irgl84 : 3.02 parts by mass MCF350-5 : 3.02 parts by mass (solid content converted by mass parts) MIBK : 18.47 parts by mass (hardenable resin composition for second hard coat layer 1) THRULYA® DAS : 75.81 (solid content conversion 15.16 mass) (part) BEAMSETDK1 : 13_48 parts by mass (1〇·11 parts by mass of solid content) Irgl84 : 0.61 parts by mass MCF350-5 : 10.11 parts by mass (0.51 parts by mass of solid content) 099141183 48 201128216 (hardenability for second hard coat layer) Resin composition 2) THRULYA® DAS . 83.12 (16.62 parts by mass of solid content) BEAMSET DK1 : 15.83 parts by mass (87 parts by mass of solids) Irgl84 : 0.48 parts by mass MCF350-5 . 0.57 parts by mass (solid content conversion mass) (Part 2) Hardening resin composition for second hard coat 3 THRULYA® DAS : 73.95 (14.79 parts by mass of solid content) BEAMSET DK1 : 24.65 parts by mass (18 49 parts by mass of solid content) Irgl84 : 0.74 parts by mass MCF350 -5 : 0.67 parts by mass (calculated as solid content) (Current resin composition for second hard coat layer 4) LINC-3A : 78.63 Irgl84 : 3.15 parts by mass MCF350-5 : 15.73 parts by mass (solid content conversion) 79 parts by mass) MIBK: 2.49 parts by mass (production of optical film) (Example 1) The first hard coat layer curable resin composition 丨 and the second hard coat layer curable resin composition 1 are used. The solvent was distilled off by the evaporator, and the viscosity was adjusted to 30 mPa·s, respectively. Then, on the TAC substrate (TD80UL) which is transported at the im/min speed, 'the hard curable resin composition 1 for the first hard coat layer and the curable resin composition for the second hard coat layer are used from the TAC substrate side. The position of 099141183 49 201128216 is related to the implementation of double-layer simultaneous coating. In this case, the wet film thickness of the coating film of the curable resin composition 1 for the first hard coat layer 1 and the curable resin composition 1 for the second hard coat layer is set to ΙΟ/rni. Next, the coating film which was simultaneously coated by the double layer was dried at 70 ° C for 60 seconds, and the ultraviolet light was irradiated to the film according to the integrated luminous flux of 12 〇mj/cm 2 in a nitrogen atmosphere to cure the coating film. Thus, a hard coat layer having a dry film thickness of 10/xm was formed to obtain an optical film. (Comparative Example 1) In the first embodiment, the curable resin composition 1 for the second hard coat layer was not used, and only the curable resin composition 1 for the first hard coat layer was subjected to a wetting film thickness of 2 〇βηι. An optical film was produced in the same manner as in Example 1 except that a hard coat layer having a dry film thickness of 9 μm was formed by coating. (Comparative Example 2) In the first embodiment, the curable resin composition 1 for the first hard coat layer was not used, and only the curable resin composition 1 for the second hard coat layer was wetted to a thickness of 2 〇/mi. An optical film was produced in the same manner as in Example 1 except that the coating was applied to form a hard coat layer having a dry film thickness of 10/rni. (Comparative Example 3) Except that in Example 1, only the curable resin composition 1 for the first hard coat layer was applied at a wetting film thickness of 20/mi, and the film was dried by applying 702⁄4 for 60 seconds. Further, the coating film is cured by irradiation with an ultraviolet light having an integrated luminous flux of 120 mJ/cm 2 in a nitrogen atmosphere, and then the second hard coat layer is made of a curable resin on the hard 099141183 50 201128216 film. The coating i is applied according to the wetting film thickness of 10 qing, and then the coating film is dried for 6 〇 seconds for 7 〇t, and then the ultraviolet ray is integrated into the light flux of 120 mJ/cm 2 according to the integrated light flux. Further, an optical film was produced in the same manner as in Example 1 except that the coating film was cured to form a hard coating layer having a total dry film thickness of 10 Å. (Example 2) The curable resin composition i for the first hard coat layer and the curable resin composition 2 for the second hard coat layer were each adjusted to have a viscosity of 1 〇 mPa.s. Next, on the TAC substrate (T-cut UL) conveyed at a speed of 2 〇m/min, the hard-coating resin for the first-hard coat layer and the hardenability for the second hard coat layer are used from the TAC substrate side. The position of the resin composition 2 was applied at the same time as the double layer. In this case, the wet film thickness of the coating film of the curable resin composition 1 for the first hard coat layer and the curable resin composition 2 for the second hard coat layer is set to 25/xm and 5/im, respectively. Next, the coating film applied by the double-layered same-day temple is dried by the thief for 6 seconds, and then the ultraviolet light is irradiated with the integrated luminous flux to become 12 〇 claws. Thereby, a hard coat layer of a thick film of the dried film is formed, and an optical film is produced. (Example 3) The wetting film thickness of the coating film of the curable resin composition for the first hard coat layer and the curable resin composition 2 for the second hard coat layer in Example 2, respectively An optical film was produced in the same manner as in Example 2 except that a hard coat layer having a dry film thickness of 8 μm was formed at 25 μm and Ιμηη, and 099141183 51 201128216 was used. (Example 4) In the second embodiment, the wetting film thickness of the coating film for the first hard coat layer curable resin composition 1 and the second hard coat layer curable resin composition 2 is set separately. An optical film was produced in the same manner as in Example 2 except that it was 18.75 μm, 3.75/im, and a hard coat layer having a dry film thickness of 6/mi was formed. (Comparative Example 4) Except that in the second embodiment, the curable resin composition for the second hard coat layer 2' was used, and only the curable resin composition 1 for the first hard coat layer was subjected to a wetting film thickness of 2 〇Mm. An optical film was produced in the same manner as in Example 2 except that a hard coat layer having a dry film thickness of 11 μm was formed by coating. (Comparative Example 5) The second hard coat layer curable resin composition 2 was subjected to a wetting film thickness of 1 〇 μιη except that the curable resin composition 1 for the first hard coat layer was not used in the second embodiment. An optical film was produced in the same manner as in Example 2 except that a hard coat layer having a dry film thickness of 5 μm was formed by coating. (Comparative Example 6) After the application of the curable resin composition 1 for the first hard coat layer and the curable resin composition 2 for the second hard coat layer in the second embodiment, before drying, An optical film was produced in the same manner as in Example 2 except that the ultraviolet light was irradiated (prebaked) so that the integrated luminous flux was 50 mJ/cm 2 in a nitrogen atmosphere. 099141183 52 201128216 (Example 5) The first hard coat layer curable resin composition 1 and the second hard coat resistive resin composition 3' were each adjusted to have a viscosity of 10 mPa·s. Then, the curable resin composition for the first hard coat layer and the curable resin composition for the second hard coat layer are formed from the TAC substrate side on the TAC substrate (TD80UL) which is conveyed at a speed of 20 m/min. The positional relationship of 3 is applied at the same time as the double layer. In this case, the wetting film thickness of the coating film for the curable resin composition for the first hard coat layer and the curable resin composition 3 for the second hard coat layer is set to 25 μm and 5 μm, respectively. Then, the coating film which was applied at the same time as the double layer was dried at 70 ° C for 6 sec, and the ultraviolet ray was irradiated so as to have an integrated luminous flux of 120 mJ/cm 2 in a nitrogen atmosphere to cure the coating film. Thereby, a hard coat layer having a dry film thickness of 9 μm was formed to obtain an optical film. (Example 6) In the fifth embodiment, the wetting film thickness of the coating film for the first hard coat layer curable resin composition i and the second hard coat layer curable resin composition 3 is set separately. An optical film was produced in the same manner as in Example 5 except that it was 25/xm, Ι/rni, and a hard coat layer having a dry film thickness was formed. (Example 7) The wet film thickness of the coating film of the curable resin composition for the first hard coat layer and the curable resin composition 3 for the second hard coat layer was set to be the same as in Example 5, respectively. An optical film was produced in the same manner as in Example 5 except that 18.75 μm, 3.75 μm, and a hard coating layer having a dry film thickness of 099141183 53 201128216 were formed. (Comparative Example 7) In the fifth embodiment, the curable resin composition 1' for the first hard coat layer was not used, and only the curable resin composition 3 for the second hard coat layer was wetted to a thickness of 1 〇/mi. An optical film was produced in the same manner as in Example 5 except that the coating was applied to form a hard coat layer having a dry film thickness of 5 μm. (Example 8) The curable resin composition 2 for the first hard coat layer 2 and the curable resin composition 4 for the second hard coat layer were each adjusted to have a viscosity of 3 μmPa.y, followed by Im/ Positional relationship between the curable resin composition 2 for the first-hard coat layer and the curable resin composition 4 for the first hard coat layer from the TAC substrate side on the TAC substrate (TD8〇UL) Apply a double layer at the same time. In this case, the wetting film thickness of the curable resin composition 2 for the first hard coat layer and the curable resin composition 4 for the second hard coat layer is set to 20/im and ΙΟ/rni, respectively. Next, the coating film which is applied at the same time by double layer is dried for 6 seconds, and then ultraviolet rays are immersed in a nitrogen atmosphere to form a light flux of 120 mJ/cm 2 to harden (4), thereby forming An optical film was prepared by drying a hard coat layer having a film thickness of 14/mi. (Example 9) An optical film was produced in the same manner as in Example 8 except that in Example 8, the drying temperature of the coating film simultaneously coated with both layers was 50 °C. 099141183 54 201128216 (Example ίο) An optical film was produced in the same manner as in Example 8 except that in Example 8, the drying temperature of the coating film simultaneously coated with both layers was changed to 7 °C. (Example 11) An optical film was produced in the same manner as in Example 8 except that in Example 8, the drying temperature of the coating film simultaneously coated with both layers was changed to 100 °C. (Example 12) In the tenth embodiment, the wet film thickness of the coating film for the first hard coat layer curable resin composition 2 and the second hard coat layer curable resin composition 4 is set separately. An optical film was produced in the same manner as in Example 1 except for 25 evaluations and 5/xm. (Comparative Example 8) In the tenth embodiment, the curable resin composition 4 for the second hard coat layer was not used, and only the curable resin composition 2 for the first hard coat layer was applied by a wetting film thickness of 20 μm. An optical film was produced in the same manner as in Example 1 except that a hard coat layer having a dry film thickness of 9 μm was formed. (Comparative Example 9) Except that the first hard coat layer curable resin composition 2 was not used in the first embodiment, only the second hard coat layer curable resin composition 4 was applied by the wetting film thickness ΙΟμηη. An optical film was produced in the same manner as in Example 1 except that a cloth having a dry film thickness of 8/xm was formed. (Example 13) 099141183 55 201128216 In addition to the first embodiment, the viscosity of the curable resin composition for the first hard coat layer and the curable resin composition 1 for the second hard coat layer were adjusted to 90 mPa·s. In the simultaneous application, the wetting film thickness of the coating film for the first hard coat layer 1 and the second hard coat layer curable resin composition 3 is set to 25/. An optical film was produced in the same manner as in Example 1 except that xm and 5 μm were formed to form a hard coat layer having a dry film thickness of 18 μm. (Comparative Example 10) In the first embodiment, the viscosity of the curable resin composition 1 for the first hard coat layer 1 and the curable resin composition 1 for the second hard coat layer was changed to 4 mPa·s. An optical film was produced in the same manner as in Example 1 except that a hard coat layer having a dry film thickness of 5 μm was formed. (Comparative Example 11) In the first embodiment, the viscosity of the curable resin composition 1 for the first hard coat layer and the curable resin composition 1 for the second hard coat layer was 10 mPa·s and 4 mPa, respectively. An optical film was produced in the same manner as in Example 1 except that the method of s was adjusted to form a hard coat layer having a dry film thickness of 9/zm. (Comparative Example 12) The viscosity of the curable resin composition 1 for the first hard coat layer 1 and the curable resin composition 1 for the second hard coat layer was set to 62 mPa·s and 10 mPa, respectively, in the first embodiment. An optical film was produced in the same manner as in Example 1 except that the method of adjusting s was performed to form a hard coat layer having a dry film thickness i7/xm. (Comparative Example 13) 099141183 56 201128216 In Example 1, the viscosity of the curable resin composition 1 for the first hard coat layer and the curable resin composition 1 for the second hard coat layer was 10 mPa·s, respectively. The manner was adjusted, and the adjusted two compositions were mixed in the same amount as used in Example 1, and the mixed composition was applied onto a TAC substrate. At this time, the coating film wetting film thickness of the mixed composition was set to 30 μm, and then the coating film was dried and irradiated in the same manner as in Example 1 to form a hard coat layer having a dry film thickness of ΙΟμηι. An optical film is produced. The composition types, wet film thickness, application method, dry film thickness and drying conditions, and transport speed of the TAC substrate used in the above examples and comparative examples are as shown in Table 1 below. 099141183 57 201128216 [Table 1] Table 1 Following (Editing viscosity (mPa · s) Wetting film / Κ / · αη) Coating method total light dry (four) 射 射 TA TAC New Zealand (m / min) First. Shout The second composition of the first material! The second component of the alkali rescue is the first one! The second thief of the thief is the first embodiment 1 1 30 30 0 20 10 simultaneously coated with 10 70 〇C '60 seconds 1 tbf example 1 1 No 30 No 30 20 No ordinary coating 9 70°C ' 60 seconds 1 tbfe #J2 No 1 No 30 30 No 20 Normal coating 10 70. . ' 60 seconds 1 tbfef 歹丨 J3 1 1 30 30 0 20 10 Successive application 10 70 〇 C ' 60 seconds 1 Implementation points J2 1 2 10 10 0 25 5 Simultaneous coating 11 70 〇 C ' 60 seconds 20 Implementation 歹丨J3 1 2 10 10 0 25 1 Simultaneously coating 8 70〇C ' 60 seconds 20 Miscellaneous 歹丨J4 1 2 10 10 0 18.75 3.75 Coated with 6 70 at the same time. (: ' 60 seconds 20 financial transactions example 4 1 no 10 no 10 20 no ordinary coating 11 70〇C ' 60 seconds 20 financial transactions example 5 no 2 no 10 10 no 10 ordinary coating 5 70〇C ' 60 seconds 20 Fcb|Cross Example 6 1 2 10 10 0 25 5 Simultaneous coating 9 After baking, 7〇〇C, 60 seconds 20 Example 5 1 3 10 10 0 25 5 Simultaneous coating 9 70〇C ' 60 seconds 20 Example 6 1 3 10 10 0 25 1 Apply 8 70 at the same time. (: ' 60 seconds 20 Implement your J7 1 3 10 10 0 18.75 3.75 Apply 5 70 at the same time.. 60 seconds 20 tbferf歹丨]7 No 3 No 10 10 No 10 Normal coating 5 70〇C ' 60 seconds 20 Your package example 8 2 4 30 30 0 20 10 Simultaneous coating 14 25 ° C, 60 seconds 1 Example 9 2 4 30 30 0 20 10 Simultaneous coating 14 50, 60 sec 1 Example 10 2 4 30 30 0 20 10 Simultaneous coating 14 70 ° C '60 sec 1 Example 11 2 4 30 30 0 20 10 Simultaneous coating 14 100 〇 C ' 60 sec 1 Implementation Example 12 2 4 30 30 0 25 5 Simultaneous coating 14 70〇C ' 60 seconds 1 tbfei column 8 2 No 30 No 30 20 No ordinary coating 9 70.' 60 seconds 1 tb$ Example 9 No 4 No 30 30 None 10 Ordinary coating 8 70 ° C, 60 seconds 1 Example 13 1 1 90 90 0 25 5 Simultaneous coating Cloth 18 70.. 60 seconds 1 tb|Crossing case 10 1 1 4 4 0 20 10 Simultaneously coating 5 70. '60 seconds 1 tb|Crossing case 11 1 1 10 4 6 20 10 Simultaneous coating 9 70T: ' 60 sec 1 tb$ 交例12 1 1 62 10 52 20 10 Simultaneous coating 17 70.' 60 sec 1 Comparative Example 13 1 1 10 10 0 30 Ordinary coating 10 70t ' 60 sec 1 099141183 58 201128216 (optical Evaluation of Films Related to the optical films of the examples and the comparative examples, the reflectance haze value (Hz) and the total light transmittance were measured as follows. Further, the optical thin films of the above examples and comparative examples were examined.臈, respectively, according to the following interference pattern evaluation; The results are shown in Table 2. Further, only the cross-sectional photograph of the optical film of Example 1 is shown in Figs. 7 and 8, and the cross-sectional photograph of the optical film of Comparative Example 3 is shown in Fig. 9. Further, in the photograph of Fig. 8 in the section "," and "sheet" of Fig. 7, the HC layer is abutted. The interface side of the opposite side of the substrate is enlarged. (Measurement of reflectance) The reflectance is measured by the product name V7100 UV-Vis spectrophotometer manufactured by Sakamoto Seiki Co., Ltd., and the product VAR-7010 absolute reflectance measuring device manufactured by JASCO Corporation. The angle is set to 5. The polarizer was N-polarized, and the measurement wavelength range was 380 to 780 nm. A black tape was attached to the optical film on the side of the TAC substrate, and then placed on a device and measured. Further, the average value of the measurement results obtained by the measurement wavelength range is regarded as the reflectance. (Measurement of fog value and total light transmittance) The fog value and total light transmittance are based on JIS K-7136 and JIS K7361 'Using the reflection and penetration rate meter HM-150 (Murako Color Technology Research Institute) System) Perform the measurement. (Evaluation of interference pattern) Using the FUNATECH (manufacturing) interference pattern inspection lamp (Na lamp), it was examined according to the line of 099141183 59 201128216 and evaluated according to the following criteria. 〇: Almost no interference pattern was found △: Can see blurry interference pattern X: Obviously see interference pattern [Table 2] Table 2 Characteristic reflectance (%) Fog value (%) Total light transmittance Tt (%) Interference pattern adhesion rate (spot) Example 1 3.17 0.5 92.2 〇100% 〇Comparative Example 1 4.11 0.2 92.3 〇100% 〇Comparative Example 2 2.76 0.8 92.3 X 83% 〇Comparative Example 3 2.78 0.6 92.5 Δ 97% 〇 Example 2 3.12 0.4 92.2 〇100% 〇Example 3 3.25 0.3 92.5 〇98% 〇Example 4 3.32 0.4 92.4 〇100% 〇Comparative Example 4 4.05 0.2 92.3 〇100% 〇Comparative Example 5 2.67 2.3 92.5 X 75% 〇Comparative Example 6 3.16 0.4 92.5 〇87% 〇Example 5 3.29 0.5 92.4 〇97% 〇Example 6 3.23 0.3 92.6 〇99% 〇Example 7 3.33 0.5 92.6 〇99% 〇Comparative Example 7 3.02 2.5 92.6 X 88% 〇Example 8 3.50 0.3 92.2 〇100% 〇Example 9 3.52 0.3 92.3 〇100% 〇Example 10 3.75 0.3 92.3 〇100% 〇Example 11 3.75 0.3 92.4 〇100% 〇· Example 12 3.63 0.3 92.3 〇100% 〇Comparative Example 8 4.11 0.2 92.3 〇100% 〇Compare Example 9 3.20 0.8 92.1 X 0% 〇- Example 13 3.09 0.9 91.5 〇91% 〇Comparative Example 10 3.80 0.4 92.3 〇100% 〇Comparative Example 11 3.75 0.5 92.3 〇100% Δ Comparative Example 12 Unmeasurable measurement cannot be determined - — X Comparative Example 13 3.77 0.4 92.4 Δ 92% 〇60 099141183 201128216 (Evaluation of adhesion) The following measures were performed and thus could not be measured. The adhesion ratio of the checkerboard adhesion test was not measured for the optical films of the above examples and comparative examples. In addition, 'for Comparative Example 12', because of the poor surface area, (checkerboard adhesion test), the indium of the optical film is placed on the side surface of the HC layer, and the total amount of the ι〇〇格 is added to make the CHIBAN (share) _ 2 fine race road tape (registered trademark) riding 5: owing to _ 赖 ,, and the needle thread is used to calculate the percentage of squares remaining without peeling off.密 Bonding rate (%) = (number of squares that are not peeled off / number of squares that are totaled (Evaluation of surface shape)) The appearance of the surface of the optical thin enamel is visually observed (with or without evaluation). No coating plaque was observed △: Can be blurred to see the coated plaque X: Apparently seeing the coating plaque (results finishing) As seen in Table 2, 杳μ八# && It belongs to the reflectivity and the low fog value. In the example, the king's light transmittance is higher than 91 s 0. In addition, the 'examples have been suppressed for ten steps, and the text occurs. Again, the sound is only known as the adhesion. It is good both in the shape of the surface. In particular, the surface shape of the first embodiment and the second embodiment is relatively good. From the cross-sectional view of the optical film of the first embodiment, it is known from Fig. 7 and Fig. 8 that the hollow yttrium 099141183 61 201128216 cerium oxide microparticles are from the HC layer. From the opposite side (upper side) of the TAC substrate, the distribution decreases toward the TAC substrate side. As shown in Fig. 8, the hollow ceria particles are almost uniformly distributed from the HC layer to the TAC substrate. The interface on the opposite side is up to 5 μm. Further, when comparing FIGS. 7 to 9, the case of the example i is known. The boundary between the hardened portion of the composition and the hardened portion of the second composition is less obvious than that of Comparative Example 3. However, 疋 corresponds to a comparative example in which no second composition is present in Example 1. 】 Because it does not contain hollow cerium oxide microparticles, it exhibits the same reflectance as that of the general hard coat layer. In Comparative Example 2, in which there is no first-component composition in Example 1, there is interference grain occurrence. The rate is also low. This phenomenon is presumed to be because the hollow dioxide particles contained in the second composition are uniformly distributed in the HC layer and are located at the interface of the HC layer* TAC substrate side, thus causing the TAC substrate and the hollow two. The difference in refractive index between the oxidized stone particles becomes larger, which causes the interference to occur. Moreover, it is speculated that the hollow oxidized particles are located at the tac substrate side interface of the hc layer, and the AHC material tree is infiltrated into the TAC base. The area in which the material hardens and shrinks is reduced, resulting in a decrease in the adhesion. In Comparative Example 3, which is not applied at the same time as the application of the first embodiment, but is applied successively, I will blur the interference pattern. Speculate the cross section shown in Figure 9. As seen in the film, the '1st secret hardening part and the second composition are 'distinguish' from the boundary of the 4th knife because the refractive index difference of the boundary part causes 099141183 62 201128216 interference pattern to occur. In Comparative Example 4 in the case of the second composition, as in Comparative Example 1, the reflectance was formed to have only the same reflectance as that of the general hard coat layer. Corresponding to Comparative Example 5 in the case where there was no first composition in Example 2, as in Comparative Example 2 There will be interference fringes, and the adhesion rate is also low. Corresponding to Comparative Example 6 in which pre-baking was performed before drying in Example 2, the adhesion rate was low. This phenomenon is presumed to be caused by the execution of prebaking. The first composition and the second composition are hardened (polymerization or crosslinking of the resin), and the first resin contained in the first composition on the TAC substrate side is not sufficiently infiltrated into the TAC substrate. In Comparative Example 7 which is equivalent to the case where the first composition is not present in Example 5, as in Comparative Example 2, interference fringes occur and the adhesion ratio is also low. Comparative Example 8 corresponding to the case where there was no second composition in Example 10, as in Comparative Example 1, was only the same reflectance as that of the general hard coat layer. In Comparative Example 9 in the case where the first composition was not present in Example 10, as in Comparative Example 2, interference fringes occurred and the adhesion ratio was also low. In Comparative Example 10 in which the viscosity of the first composition and the second composition in Example 1 were both small, the reflectance was lower than that of Comparative Example 1, but higher than that of Example 1. This phenomenon is presumed to be due to the low viscosity of the two compositions, resulting in the mixing of the two components, resulting in the reduction of the presence of hollow ceria particles in the HC layer on the opposite side (upper side) of the TAC substrate, resulting in reflectance. improve. The viscosity of the second composition corresponding to the upper layer side of the HC layer in Example 1 was less than that of Comparative Example 11 in the case of 099141183 63 201128216, and the planar shape was not good. In Comparative Example 12, which corresponds to a case where the difference in viscosity between the first composition and the second composition in Example 1 is large, a large number of plaques on the surface of the HC layer occur, resulting in a surface which is not smooth, which is impossible due to scattering of light. Determination of reflectance, fog value and king light transmittance. Corresponding to Example 13 in which the first composition and the second composition were uniformly coated in Example 1, the reflectance was the same as that of Comparative Example 1 . In addition, interference fringes occur and the adhesion rate is also low. This phenomenon is presumed to be applied because the two compositions are uniformly mixed, and as in Comparative Example 10, the presence of hollow cerium oxide microparticles on the opposite side of the TAC substrate in the HC layer is reduced, resulting in an increase in reflectance. Further, as in Comparative Example 2, the hollow uranium oxide fine particles were located at the interface of the HC layer on the side of the TAC substrate, causing the occurrence of interference fringes to cause a decrease in the adhesion ratio. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing an example of distribution of low refractive index fine particles in an HC layer of an optical film obtained by the production method of the present invention. Fig. 2 is a schematic cross-sectional view showing an example of distribution of low refractive index fine particles in a low refractive index layer of an antireflection film obtained by a conventional double-layer coating method. Fig. 3 is a view showing an example of a procedure for simultaneously applying a first and second HC layer curable resin composition in the method for producing an optical film of the present invention. Fig. 4 is a view showing an example of a layer structure of a second optical film of the present invention. Fig. 5 is a view showing another example of the layer structure of the second optical film of the present invention. 099141183 64 201128216 FIG. 6 is a view showing an example of a layer structure of a polarizing plate of the present invention. Fig. 7 is a cross-sectional view showing the optical film of the first embodiment. Fig. 8 is an enlarged cross-sectional view showing the interface portion of the hard coat layer of the optical film of Example 1 on the opposite side to the opposite side of the light-transmitting substrate. 9 is a cross-sectional view of an optical film of Comparative Example 3. [Explanation of main component symbols] 1 Optical film 2 Polarizing plate 10 Light-transmissive substrate 20 Hard-coat layer 30 Low-refractive-index microparticle 40 Die 51 ' 52 Slit 60 First hard-coating hardenable resin composition 61 Coating film 70 for curable resin composition for hard coat layer Curable resin composition for second hard coat layer 71 Coating film 80 for curable resin composition for second hard coat layer Coating height 90 First and second Total Wetting Film Thickness of Composition 100 Conventional Anti-Reflection Film 110 Conventional Hard Coating Layer 120 Low Refractive Index Layer 099141183 65 201128216 130 Transport Direction of Light Penetrating Substrate 140 Antistatic Layer 150 Antifouling Layer 160 Protective Film 170 Polarizing layer 180 polarizer 099141183 66

Claims (1)

201128216 VII. Patent application scope: 1. A method for producing an optical film, comprising: (i) a step of preparing a light-transmitting substrate; (9) preparing a hardenable resin composition for a first-hard coat layer and a step of a hardenable resin composition for a second hard coat layer, the first hard coat phase hardenable age-containing system containing a reactive first and a third, and having no low refractive index fine particles and a low refractive index The resin or the enamel contains the low-mole resin in an amount of 5.0 f or less with respect to the mass of the first resin, and the viscosity μΐ is 3 ·s or more; and the curable tree of the second hard coat layer contains the One or more kinds of low refractive index components selected from the group consisting of low refractive index fine particles and low refractive index resins having an average particle diameter of 10 to 10 m, and a second resin and a second solvent having reactivity, a viscosity μ2 of 5 mpa s or more, and the value of the P 减 minus the μ 系 is 3 〇 mPa · S or less; (111) on one side of the light-transmitting substrate, from the side of the light-transmitting substrate, at least Curing property of the curable resin composition for the first hard coat layer and the second hard coat layer a step of forming a coating film adjacent to and applying the lipid composition; and (iv) drying the coating film obtained by the above (out) step, followed by performing light irradiation and/or heating to harden the coating film. Step; and no prebaking is performed between the (out) step and the (iv) step. The method for producing an optical film according to the first aspect of the invention, wherein in the step (iii), the first hard coat layer is coated with a curable resin composition, and the composition of the curable resin is 0.019141183 67 201128216 201128216. 1 When the wetting film thickness of the ruthenium film is set to τι, and the wetting film thickness of the coating film of the second hard coat layer is Τ2, Τ2/Τ1 is 3. The optical film of claim 1 The method for producing a curable resin composition for a first hard coat layer is 3 to 95 mPa·s, and a viscosity μ2 of the curable resin composition for a second hard coat layer is 5 to 10 mPa. s 〇 4. An optical film obtained by the production method according to any one of the claims ir to 3 of the patent application. 5. The film of claim 4 is a thin film having a hard coat layer on one side of the light-transmitting substrate, wherein the low-refractive-index particles are in the film thickness direction of the hard coat layer. The interface existing on the opposite side of the light-transmitting substrate is on the side of the light-transmitting substrate, and the more the amount of the low-refractive-index particles is on the side of the light-permeable substrate 4 the opposite side of the light transmissive substrate is on the side of the light transmissive substrate, the low refractive index component is gradually reduced; there is no layer interface in the hard coat layer; the hard coat layer penetrates the light In the adhesion test of the substrate, the adhesion ratio was 90 to 1 〇〇〇/. . 6′′ an optical thinner of the fourth aspect of the invention, which is in the film thickness direction of the hard coat layer from the interface from the opposite side of the light-transmitting substrate to the dry film of the hard coat layer In the region up to the thick section, 7 〇 to _% of the total amount of the low refractive index fine particles are present. A polarizing plate is provided on the opposite side of the light-transmitting substrate of the hard coat layer of the optical film of the fourth aspect of the above patent application, and a polarizer is provided. A display panel in which a display panel is disposed on the opposite side of the light-transmitting substrate of the hard coat layer of the optical film of claim 4 of the above patent application. 099141183 69