WO2013032117A2 - 반사 방지 필름 - Google Patents
반사 방지 필름 Download PDFInfo
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- WO2013032117A2 WO2013032117A2 PCT/KR2012/004760 KR2012004760W WO2013032117A2 WO 2013032117 A2 WO2013032117 A2 WO 2013032117A2 KR 2012004760 W KR2012004760 W KR 2012004760W WO 2013032117 A2 WO2013032117 A2 WO 2013032117A2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
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- G02B1/105—
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
Definitions
- the present invention relates to an antireflection film.
- display devices such as PDPs, CRTs, and LCDs are equipped with anti-reflection films (or anti-glare films) for minimizing reflection of light incident on the screen from the outside.
- anti-reflection films or anti-glare films
- an antireflection layer is mainly formed on a light transmissive substrate.
- the anti-reflection layer is a hard coat layer, a high refractive index layer and a low refractive index layer sequentially stacked from the light-transmitting substrate side.
- the three-layer structure is the most widely used.
- a two-layer structure in which the hard coat layer or the high refractive index insect is omitted from the antireflection layer is also commercialized.
- an anti-reflection film provided with an anti-glare hard coat layer is also used.
- the antireflection film is generally produced by a dry method or a wet method.
- the dry method is a method of laminating a plurality of thin film layers by vapor deposition, sputtering, or the like, and the interfacial adhesion between layers is strong, but the manufacturing cost is high and it is not widely used commercially.
- the wet method is a method of coating a composition including a binder, a solvent, and the like on a substrate, and drying and curing the wet method, which has a low manufacturing cost compared to the dry method and is widely used commercially.
- the wet method generally produces a composition required for forming each layer, such as a hard coat layer, a high refractive index layer, and a low refractive index layer, and forms each layer sequentially using the same. Adhesion is weak.
- the hard coat layer or the high refractive index layer is usually formed of a pure binder on the substrate, or formed of a separate layer containing a binder and inorganic fine particles on the substrate, and a low refractive index layer in which hollow particles and the like are dispersed thereon.
- the antireflection film of the structure as described above has a weak interfacial adhesion and poor durability.
- the present invention provides an antireflection film that can be formed in a simplified process while exhibiting improved interlayer interfacial adhesion and scratch resistance.
- the binder and the first layer comprising inorganic fine particles, eroded in the substrate; And a second layer covering the first layer, including a binder, and hollow particle layers adjacent to each other, the hollow particles being adjacent to each other, the hollow particles being connected to each other, and between the adjacent hollow particles included in the hollow particle layers.
- An antireflection film having a maximum value of 60 nm or less is provided.
- Such an antireflection film includes a first layer comprising a first (meth) acrylate binder and inorganic fine particles in the first (meth) acrylate binder, and eroding in the substrate; And a second layer covering the first layer while including the second (meth) acrylate-based binder and the hollow particle layers in the second (meth) acrylate-based binder.
- the second layer may include 2 to 5 hollow particle layers.
- the antireflection film may further include one or more hollow particles spaced apart from the hollow particle layers.
- the one or more hollow particles may be spaced apart from the hollow particle layers at a distance of 30 to 150 nm, and as such, the number of hollow particles spaced apart from the hollow particle layers may be hollow particles included in the entire film. It may be less than 10% of the number.
- the cross-sectional area ratio of the hollow particles to any cross-sectional area of the crab two layers may be 70 to 95%.
- the first (meth) acrylate-based binder may include a crosslinked polymer of a (meth) acrylate-based compound having a molecular weight of less than 600
- the second (meth) acrylate-based binder may have a molecular weight of 600 It may include a crosslinked copolymer of less than (meth) acrylate-based compound and (meth) acrylate-based compound having a molecular weight of 600 to 100,000.
- the first layer further includes a region in which a crosslinked copolymer of a (meth) acrylate compound having a molecular weight of less than 600 and a (meth) acrylate compound having a molecular weight of 600 to 100,000 is located. It may include.
- the region in which the crosslinked copolymer is positioned may be positioned to a depth of about 5 to 50% of the first layer based on the interface between the first layer and the second layer.
- the crosslinked copolymer may be included to increase the distribution gradient in the direction of the second layer.
- the second layer may further comprise inorganic fine particles.
- the second (meth) acrylate-based binder is a crosslinked air in which a fluorine-based (meth) acrylate compound is further copolymerized in addition to the (meth) acrylate-based compound having a molecular weight of less than 600 and the (meth) acrylate-based compound having a molecular weight of 600 to 100,000. It may also include coalescence.
- the inorganic fine particles may be one having a number average particle diameter of 5 to 50nm, for example, may be silica fine particles.
- the hollow particles may be one having a number average particle diameter of 5 to 80 nm, for example, hollow silica particles.
- the second layer may have a thickness of 10 to 300nm.
- the anti-reflective film according to the present invention can be formed by a single coating, so that it can be formed in a simplified process, while maintaining improved interfacial adhesion and scratch resistance between layers. Also, the The antireflection film can exhibit an excellent antireflection effect, and thus can be preferably applied to an antireflection film such as a display device.
- FIG. 1 is a cross-sectional view schematically showing the structure of an anti-reflection film according to an embodiment of the present invention.
- FIG. 2 is a flow chart schematically showing a method of manufacturing an anti-reflection film according to an embodiment of the present invention.
- inorganic fine particles are particles derived from various inorganic materials, and may collectively refer to particles having a number average particle diameter on the nanometer scale, for example, a number average particle diameter of 100 nm or less. Such 'inorganic particulates' may be amorphous particles having substantially no empty space inside the particles.
- sica fine particles may be particles derived from a silicon compound or an organosilicon compound, and may refer to a silicon compound or an organosilicon compound particle having a number average particle diameter of 100 nm or less and having no empty space inside the particle.
- first hollow particles' may be to sense the particles of the form of the surface and / or empty space in the interior of the organic or inorganic particles are present.
- the term “hollow silica particles” may refer to particles having a hollow space present on and / or inside the silica particles as silica particles derived from a silicon compound or an organosilicon compound.
- the 'hollow particle layer' may refer to a hollow particle row forming a layer on a substrate including hollow particles continuously connected in a direction parallel to the substrate.
- the hollow contained in one 'hollow particle layer' Among the hollow particles forming the 'hollow particle layer', the whole particles may not be connected continuously. For example, within about 5%, or within about 3%, or within about 1% may be discontinuous without being connected to other hollow particles.
- these 'hollow particle layers' are 'adjacent to each other' means that at least about 40%, or at least about 50%, or at least about 60%, or at least about 70% of the hollow particles forming a 'hollow particle layer' Or about 80% or more, or about 90% or more of the hollow particles may be in contact with the hollow particles forming another 'hollow particle layer' in a direction perpendicular to the substrate.
- the term “distance” between hollow particles refers to a distance between a hollow particle and another hollow particle, and may refer to a shortest straight distance among straight distances connecting two circumferential points of the hollow particles. .
- the term “distance between neighboring hollow particles” may refer to a “distance” between a hollow particle and another hollow particle adjacent to the nearest one.
- (meth) acrylate is defined as collectively referred to as acrylate (meth) or methacrylate (methacrylate).
- such a '(meth) acrylate' may be defined as not having a fluorine-containing substituent, and the compound having a fluorine-containing substituent may be referred to as a fluorine-based (meth) acrylate compound to distinguish it.
- 1 coating layer means a composition layer formed by coating (coating) a predetermined anti-reflective coating composition for a substrate and a substrate film to be described later. Then, the first referred to as a phase separation "means that the difference is formed on the distribution of a particular component contained in the composition due to differences in the density of surface tension or other physical properties of the composition.
- the coating layer when the coating layer is phase-separated, it may be divided into at least two layers based on whether a specific component is distributed, for example, the distribution of hollow particles.
- 'eroding into the substrate' means that a component for forming a certain layer of the antireflection film (for example, a (meth) acrylate-based compound and an inorganic fine particle, etc. for forming a binder of the layer) is used. It may be referred to as penetrating into the substrate to form the layer in question.
- a component that penetrates into the substrate may be dried and cured while penetrating into a region within the substrate, thereby It can form a constant layer within.
- the formation of a layer 'on the substrate' means that the components for forming the layer are not substantially eroded in the substrate, and are dried and cured at the interface with the substrate, thereby ensuring that there is no overlapping area with the substrate. It may refer to forming a layer.
- the second layer including the hollow particle layers 'covering' the first layer eroded in the substrate includes the first layer, which is an erosion layer in the substrate, and the hollow particle layer. It may mean that there is no separate layer between the second layer, for example, no erosion into the substrate and no hollow particle layer.
- a binder eg, a crosslinked polymer formed from a (meth) acrylate-based compound
- inorganic fine particles between the first layer that is an erosion layer and the second layer that contains the hollow particle layer It may mean that there is no separate layer that is included and not eroded into the substrate.
- the inventors of the present invention in the course of repeated studies on the anti-reflection film, by using a predetermined composition described below to induce spontaneous phase separation to form an anti-reflection film, the interfacial adhesion between the layers and the scratch resistance is excellent It was confirmed that it was possible to provide an antireflection film showing an antireflection effect, and completed the invention.
- the excellent characteristics of the antireflection film are that the first layer serving as the hard coat layer is formed in the form of erosion in the substrate, and the second layer serving as the low refractive index layer is formed so as to cover the first layer. It seems to be due to structural characteristics.
- a separate hard coat layer substantially free of hollow particles eg, substantially free of hollow particles, containing only binders, or containing only binders and inorganic fine particles.
- Anti-reflection of the structure having a separate hard coat layer or a high refractive index layer In the case of the film, a separate coating or curing process is required to form each layer, and thus, the process is complicated or the interface adhesion between the layers is lowered.
- the antireflection film of one embodiment in which the first layer (hard coat layer) eroded in the substrate covers the second layer (low refractive index) can be formed in a simplified manner through a unified coating and curing process, Excellent interfacial adhesion between layers can be exhibited.
- the antireflective film of one embodiment has hollow particles densely formed in the second layer (low refractive index layer) so that the hollow particles are continuously connected, and these hollow particle layers are formed adjacent to each other in the second layer.
- the distance between the hollow particles included in the hollow particle layers may be about 60 nm or less, or about 50 nm or less, or about 40 nm or less, or black or about 30 nm or less, with the largest maximum value of the distance between neighboring hollow particles.
- Hollow particles are densely formed in the second layer to about 0 to 30 nm or only about 5 to 25 nm. The distance between the hollow particles in this range may correspond to a particle size range of about 1 or 2 hollow particles or less.
- the anti-reflection film of one embodiment may exhibit a better anti-glare effect, may exhibit a significantly improved interface adhesion.
- An antireflection film of such an embodiment includes a binder, and a first layer comprising inorganic fine particles and eroded in the substrate; And a second layer covering the first layer, the binder and a second layer covering the first layer, wherein the second layer includes hollow particle layers adjacent to each other and comprising hollow particles connected in series.
- the anti-reflection film may include a first layer comprising a first (meth) acrylate-based binder and inorganic fine particles in the first (meth) acrylate-based binder and being eroded in the substrate; And a second layer covering the first layer, including a second (meth) acrylate-based binder and hollow particle layers in the second (meth) acrylate-based binder.
- the second layer may include 2 to 5 hollow particle layers.
- the first layer eroded in the substrate can act as a high refractive index layer exhibiting a refractive index of at least about 1.5 while acting as a hard coat layer of the antireflection film.
- the hard coat layer may include a first (meth) acrylate-based binder eroded into the substrate, the first (meth) acrylate-based binder includes a cross-linked polymer of (meth) acrylate-based compound having a molecular weight of less than 600 can do.
- the hard coat layer may contain inorganic fine particles in the first (meth) acrylate-based binder.
- the second layer in contact with and covering the first layer, which is an eroding insect in the substrate is substantially or substantially all of the hollow particles (eg, about 97 wt% or more, or about 99 wt% subphase), thereby preventing reflection. It can serve as a low refractive index layer of the film. Such a low refractive index layer may exhibit a low refractive index of about 1.45 or less, thereby exhibiting an appropriate antireflection effect. More specifically, the hollow particles in the second layer are continuously connected to each other to form a hollow particle worm, and 2 to 5 layers, or 2 to 4 layers of such hollow particle layers may be closely formed in the second layer. .
- the hollow particles are densely formed in the hollow particle layers such that the distance between neighboring hollow particles is at most about 60 nm or less. Accordingly, the second layer may exhibit a lower refractive index and an excellent antireflection effect, and the antireflection film of the embodiment including the same may exhibit excellent scratch resistance and the like.
- the low refractive index layer includes a second (meth) acrylate-based binder, which is a (meth) acrylate-based compound having a molecular weight of less than 600 and a (meth) acrylate having a molecular weight of 600 to 100,000 (meth).
- a crosslinked copolymer of an acrylate compound may be included.
- the above-described hollow particle layers may be included in the first (meth) acrylate-based binder of the low refractive index layer.
- the first (meth) acrylate-based binder of the first layer serving as the hard coat layer is a (meth) acrylate-based having a molecular weight of less than 600. It may further include a crosslinked copolymer of a compound and a (meth) acrylate-based compound having a molecular weight of 600 to 100,000.
- the second layer serving as the low refractive index layer may further include inorganic fine particles.
- FIG. 1 A schematic schematic diagram of an example of such an antireflection film is shown in FIG. 1.
- a first layer 2 serving as a hard coat layer is formed in a hardened state by erosion in the substrate 1, and a second layer 3 serving as a low refractive index layer.
- the erosion layer can be formed on the substrate 1 on which the erosion layer is formed while in contact with and covering the first layer 2 which is the erosion layer. At this time, no separate layer is distinguished between the first layer 2 eroded into the substrate and the second layer 3 over the substrate.
- the absence of such a separate layer means that, for example, only the binder and / or the inorganic fine particles are included between the first layer, which is an erosion layer, and the second layer, in which the hollow particles are substantially distributed, and the hollow particles are substantially free. It may be referred to that it does not include and does not include a separate layer that is not eroded into the substrate.
- the first layer 2 acting as a hard coat layer remains eroded into the substrate 1, and as the second layer 3 acting as a low refractive index layer is formed on the substrate to contact them.
- the antireflection film may have excellent interfacial adhesion between the substrate, the hard coat layer, and the low refractive index layer, thereby minimizing the peeling phenomenon during the use process.
- the ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the second layer is about 70 to 95%, black about 75 to 93%, black about 80 to 90%, or about 85 to 92%.
- the hollow particles may be densely distributed in the second layer serving as the low refractive index layer.
- the reflective "prevention film can exhibit excellent properties and low refractive index anti-reflection effect.
- the antireflection film includes a substrate.
- the substrate 1 is a conventional transparent thin film, which is the first layer of the first layer.
- the kind is not particularly limited as long as the (meth) acrylate-based binder and the inorganic fine particles are those of a material which can be eroded.
- the substrate The thing derived from materials, such as polyester resin, polycarbonate resin, acrylic resin, and acetate cellulose resin, can be used.
- triacetate salose (TAC) resin can be used as the substrate for improving transparency and antireflection effect.
- the antireflection film contains the crosslinked polymer of the (meth) acrylate type compound of molecular weight less than 600 as a 1st (meth) acrylate type binder, and contains the inorganic fine particles in this 1st (meth) acrylate type binder.
- the first layer 2 can be included as a hard coat layer. Such a hardcoat layer can be a layer eroded into the substrate.
- the first layer 2 may be one in which the first (meth) acrylate-based binder and the inorganic fine particles are eroded into the substrate to be cured integrally with the substrate. Although the first layer 2 is shown as eroded to the entire surface of the substrate 1 in FIG. 1, in another example, the first layer 2 may be constructed by eroding a portion of the substrate 1.
- the second layer 3 acting as a low refractive index layer is formed to contact and cover the first layer 2 eroded in the substrate 1, and the hollow particle layers adjacent to each other, for example, 2 to 5 adjacent to each other.
- It can be a layer comprising hollow particle layers 4 of a layer.
- Each of these hollow particle layers 4 comprises a plurality of hollow particles continuously connected in a direction parallel to the substrate, and the hollow particle layers 4 are adjacent to each other and hollow particles in two layers are adjacent to each other. It is closely distributed.
- the hollow particles in the hollow particle layers 4 are disposed such that the distance between neighboring hollow particles is at most about 60 nm or less. Are distributed closely. Due to the distribution of the hollow particles and the hollow particle layers, the antireflective film of one embodiment may exhibit a better antireflection effect.
- the antireflection film of one embodiment may further include one or more hollow particles 5 spaced apart from the hollow particle layers 4 that are densely distributed in the second layer.
- Such hollow particles 5 do not constitute the hollow particle layers 4, but may be one or more hollow particles which are slightly spaced adjacent to the hollow particle layers 4.
- the spaced apart hollow particles 5 also have a relatively short distance of about 0 to 150 nm, or about 30 to 150 nm, or about 30 to 100 nm, or about 30 to 80 nm with the hollow particle layers 4. Can be spaced apart.
- the number of hollow particles 5 spaced apart from the hollow particle layers 4 is about 10% or less, or about 7% or less of the number of hollow particles included in the entire film, black
- the silver may be about 5% or less, or about 3% or less, and the black may be about 1 to 3%.
- the antireflective film of one embodiment may exhibit further improved antireflective properties.
- the second layer 3 including the hollow particle layers 4 may have a thickness of about 10 to 300 nm, or about 50 to 200 nm, or about 100 to 150 nm.
- the thickness of the second layer 3 may vary depending on the base material within the erosion of forming spontaneous phase separation, and a binder in the production process of the compounds with anti-reflective, anti-reflective coating composition for a film about.
- the hollow particles layers 4 of the second filler 3 acting as a low refractive index layer can be densely distributed, and the second layer 3 is It may be formed to directly cover the first layer (2) which is an erosion layer in the substrate.
- the second layer 3 serving as the low refractive index layer can exhibit lower refractive index and reflectance, and the antireflection film of one embodiment can exhibit more improved antireflection properties.
- the above-described first layer 2 and the second layer 3 there is no separate layer containing only binder and / or inorganic fine particles and not eroded into the substrate.
- the anti-reflection film of one embodiment of the second layer (3) Can be formed directly above the substrate 1 and the first layer 2 acting as a hard coat layer, thereby exhibiting an improved interlayer adhesion, scratch resistance and antireflection effect.
- the second (meth) acrylate-based binder of the second layer (3) is a (meth) acrylate-based compound having a molecular weight of less than 600 and a molecular weight of 600 to 100,000 It may include a crosslinked copolymer of a (meth) acrylate-based compound.
- the second (meth) acrylate-based binder has a molecular weight of less than 600
- the crosslinked copolymer of a (meth) acrylate type compound and a fluorine-type (meth) acrylate compound may also be included.
- the crosslinked copolymer further copolymerized with such a fluorine-based (meth) acrylate compound is included in the second (meth) acrylate-based binder, the lower refractive index and the excellent refractive index of the second layer 3 serving as the low refractive index layer Anti-reflection effect can be realized.
- the scratch resistance of the 2nd layer 3 can be improved more.
- the second layer 3 may further include inorganic particulates in the second (meth) acrylate-based binder, whereby the scratch resistance and the antireflection effect of the second layer 3 may be further improved. have.
- the 1st (meth) acrylate type binder of the 1st layer (2) is a (meth) acrylate type compound of less than 600 molecular weight other than the crosslinked polymer of the (meth) acrylate type compound of less than 600 molecular weight mentioned above, and Molecular weight of 600 to 100,000
- It may further include a crosslinked copolymer of a (meth) acrylate-based compound.
- the crosslinked copolymer contained in the first (meth) acrylate-based binder of the first layer (2) is the first layer (2)
- the first layer (based on the light interface of the second layer (3) A certain area of 2) may be included, for example, up to about 5-50% depth of the first layer 2, black up to about 5-45% depth, or up to about 5-40% depth.
- the crosslinked copolymer included in the binder of the first layer 2 may be included to increase the distribution gradient in the direction of the second layer 3.
- the (meth) acrylate-based compound having a molecular weight of 600 to 100,000 is crosslinked and copolymerized with the (meth) acrylate-based compound having a molecular weight of less than 600 with a distribution gradient to a certain depth of the first layer (2),
- the interfacial adhesion between the first layer 2 and the crab 2 layer 3 can be further improved, and is included in the second layer 3.
- the hollow particles may be densely distributed.
- the first layer 2 is a layer having a higher refractive index than the second layer 3 serving as the low refractive index layer, and the refractive index is about 1.5 to 1.58, black may be about 1.5-1.57, or about 1.51-1.56.
- the second layer 3 may have a refractive index of about 1.1 to 1.45, or about 1.15 to 1.43, or about 1.2 to 1.42.
- the anti-reflection film of another embodiment described above exhibits excellent anti-reflection properties such that the reflectance is about 0.5 to 4%, or about 0.8 to 3%, or about 1 to 2%, and various displays such as PDP, CRT, or LCD It can be suitably applied as an antireflection film in the apparatus.
- Such antireflective coating compositions include (meth) acrylate compounds having a molecular weight of less than 600; (Meth) acrylate compounds having a molecular weight of 600 to 100,000; Inorganic fine particles; And hollow particles.
- the composition of each of these compositions will be described below.
- the antireflective coating composition may include a (meth) acrylate compound having a molecular weight of less than 600. Such a low molecular weight (meth) acrylate-based compound may be at least partially eroded into the substrate when the composition is applied to any substrate.
- the low molecular weight (meth) acrylate-based compound eroded into the substrate as described above is a first-layer binder copolymerized with homopolymerization or a high molecular weight (meth) acrylate-based compound having a molecular weight of 600 to 100,000, which will be described later. Can be formed.
- the remainder of the low molecular weight (meth) acrylate compound may remain on the substrate without being eroded.
- the remaining compound may be copolymerized with a high molecular weight (meth) acrylate compound to be described later to form a binder of a second layer covering the first layer of the erosion region.
- the low molecular weight (meth) acrylate type The compound may have a molecular weight of, for example, less than about 600, or less than about 500, or less than about 400, and in another example, may have a molecular weight of about 50 or greater, or about 100 or greater.
- the low molecular weight (meth) acrylate based compound is formed so that a first layer (eg, a hard coat layer and / or a high refractive index layer) exhibiting higher refractive index can be formed in the substrate. It may have a substituent such as sulfur, chlorine or metal or an aromatic substituent.
- low molecular weight (meth) acrylate compounds include pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythroxy nucleus (meth) acrylate, trimethylenepropane tri (meth) Acrylate, ethylene glycol di (meth) acrylate, 9,9-bis (4- (2-acryloxyephenyl) fluorene (refractive index 1.62), bis (4-methacryloxythiophenyl) sulfide (refractive index 1.689), and bis (4-vinylthiophenyl) sulfide (refractive index 1.695), and may include two or more kinds of combinations selected for these conditions.
- the antireflective coating composition may include a high molecular weight (meth) acrylate compound having a molecular weight of 600 to 100,000.
- a high molecular weight (meth) acrylate compound having a molecular weight of 600 to 100,000.
- Such high molecular weight (meth) acrylate-based compounds when the composition is applied to any substrate, due to the large molecular weight and the bulky chemical structure, etc., compared to the low-molecular weight compound described above, the relatively small amount Can be eroded into the rest. A significant amount may remain on the substrate.
- the high molecular weight (meth) acrylate compound is not eroded to the same depth as the low molecular weight (meth) acrylate compound described above.
- the erosion region in the substrate can be divided into the following two regions. First, only the low molecular weight (meth) acrylate-based compound is an eroded region or a region at which it can be eroded, where there may be a binder which is a crosslinked polymer of the low molecular weight (meth) acrylate-based compound.
- the high molecular weight (meth) acrylate compound In the region where the high molecular weight (meth) acrylate compound is eroded as the remaining area of the erosion region, the high molecular weight (meth) acrylate compound and There may be a binder in which the low molecular weight (meth) acrylate-based compound is crosslinked.
- the second layer (eg, the low refractive index layer of the anti-reflection film) which is copolymerized with the low molecular weight compound described above to cover the erosion layer, with the remainder of the high molecular weight (meth) acrylate compound not eroded to the substrate.
- the second (meth) acrylate binder can be formed. This improves the interfacial adhesion between the first layer that can act as a hard coat layer of the antireflective film and the second layer (low refractive index layer) covering thereon, and at the same time improves the scratch resistance of the low refractive index layer,
- the hollow particles included in the low refractive index layer can be more densely distributed.
- Such a high molecular weight (meth) acrylate-based compound is a compound having a relatively large molecular weight and bulky structure compared to the low molecular weight compound described above, for example, about 400 or more, or about 500 or more, or about It may have a molecular weight of 600 or more, and as another example, may have a molecular weight of about 100,000 or less, black is about 80,000 or less, or about 50,000 or less.
- the high molecular weight (meth) acrylate-based compound may include a compound having a structure in which two or more molecules of the aforementioned low molecular weight (meth) acrylate-based compound are linked by a linker.
- the linker may be a divalent or more radical including any chemical bond known to be capable of linking a (meth) acrylate-based compound, for example, a urethane bond, a thioether bond, an ether bond or an ester bond.
- the high molecular weight (meth) acrylate-based compound is one or more substituents selected from the group consisting of epoxy group, hydroxyl group, carboxy group, thiol group, C6 or more aromatic or aliphatic carbon " hydrogen group and isocyanate group It can have
- a commercial article satisfying the above conditions may be used or may be directly synthesized.
- examples of such commodities include UA-306T, UA-306I, UA-306H, UA-510T, UA-510I, UA-510H (above, manufactured by KYOEISHA); BPZA-66, BPZA-100 (above, manufactured by KYOEISHA); EB9260, EB9970 (above, manufactured by BAEYER);
- Examples include Miramer SP1107 and Miramer SP1114 (manufactured by MIWON).
- the high molecular weight (meth) acrylate-based compound described above is contained in the anti-reflective coating composition at about 5 to 30 parts by weight, or about 5 to 25 parts by weight, or about 5 to 20 parts by weight based on 100 parts by weight of the low molecular weight compound. May be included.
- the content ratio of the high molecular weight (meth) acrylate-based compound is configured at the time of excessive addition while ensuring the minimum effect of the mixed use of the compound for forming a binder including a high molecular weight and a low molecular weight (meth) acrylate-based compound It may be set in consideration of optimization of physical properties of the layer or change in the distribution tendency of the hollow particles.
- the above-described antireflective coating composition may further include a fluorine-based (meth) acrylate compound in which at least one fluorine is substituted as a compound for forming a binder.
- a fluorine-based (meth) acrylate compound is the 2nd (meth) acrylate type binder of the 2nd layer which serves as the low refractive index layer of an antireflection film with the low molecular weight and high molecular weight (meth) acrylate compound mentioned above. Can be formed.
- the fluorine-based (meth) acrylate compound exhibits a lower refractive index
- the refractive index of the low refractive index layer can be lowered, and the compatibility with the hollow particles to be described later is excellent as the polar functional group is included, and the scratch resistance of the low refractive index layer is reduced. It can help improve your sex.
- fluorine-based (meth) acrylate compounds are arbitrary
- the (meth) acrylate compound may have a structure in which one or more fluorine-containing substituents are bonded thereto, and examples of such a fluorine-based (meth) acrylate compound include at least one member selected from the group consisting of compounds represented by Formulas 1 to 5 below.
- Compounds include:
- R 1 is an integer of to 7 alkyl group or a hydrogen group having 1 to 6
- b is an integer from 1 to 3;
- c is an integer of 1 to 10;
- d is an integer of 1 to 11;
- e is an integer of 1 to 5;
- f is an integer of 4 to 10.
- the fluorine-based (meth) acrylate compound is antireflective at about 0.5 to 20 parts by weight, or about 5 to 18 parts by weight, or about 10 to 16 parts by weight based on 100 parts by weight of the above-described low molecular weight (meth) acrylate compound. It may be included in the coating composition.
- fluorine-based (meth) acrylate compound a commercial article satisfying the above conditions may be used.
- examples of such commercial articles include OPTOOL AR110 (manufacturer: DAI IN), LINC-3A, and LINC-102A (manufacturer: KYOEISHA). , PFOA (manufacturer: Exfluor), OP-38Z (manufacturer: DIC), and the like.
- the inorganic anti-reflective coating composition may be included.
- the inorganic fine particles may be included in a state in which a part thereof is eroded and dispersed together with the above-described two or more kinds of binder-forming compounds.
- the remainder not eroded into the substrate is included in the state dispersed in the second layer serving as the low refractive index layer, and may contribute to the improvement of scratch resistance and antireflection.
- the inorganic fine particles are particles derived from various inorganic materials, and may have a number average particle diameter of a nanometer scale.
- These inorganic fine particles may have a number average particle diameter, for example, about 100 run or less, or about 5 to 50 nm, or about 5 to 20 nm. Transparency of the coating layer, In order to adjust the refractive index and scratch resistance, the particle size of the inorganic fine particles may be adjusted to fall within the above-mentioned range.
- silica particles derived from a silicon compound or an organosilicon compound may be used as the inorganic particles.
- the inorganic fine particles are, for example, about 5 to 30 parts by weight, black to about 5 to 25 parts by weight, or about 5 to 20 parts by weight with respect to 100 parts by weight of the above-described low molecular weight (meth) acrylate-based compound. It may be included in the coating composition. Inorganic particulates can be exhibited to a minimum effect by inorganic particulates, while considering the content of inorganic particulates that can be eroded depending on the type of the substrate and the reduction of the anti-reflective effect due to the increase in reflectance when added in excess. The content of sweets can be adjusted in the above range.
- the inorganic fine particles are dispersed in a predetermined dispersion medium, it may be included in the form of a sol (sol) having a solid content of about 5 to 40% by weight.
- the organic solvent that can be used as a dispersion medium include alcohols such as methane, isopropyl alcohol (IPA), ethylene glycol and butanol; Ketones such as methyl ethyl ketone and methyl iso butyl ketone (MIBK); Aromatic carbon hydrogens such as toluene and xylene; Amides such as dimethyl formamide, dimethyl acetamide, N-methyl pyrrolidone and the like; Esters such as ethyl acetate, butyl acetate and ⁇ -butyrolactone; Ethers such as tetrahydrofiiran and 1,4-dioxane; Or combinations thereof.
- alcohols such as methane, isopropyl alcohol (IPA), ethylene glycol and butano
- silica sol may be used as the inorganic particle, for example, MEK-ST, MIBK-ST, MIBK-SD, MIBK-SD-L, MEK-AC, DMAC- ST, EG-ST; Or Purisol from Gaematech.
- the anti-reflective coating composition may further include hollow particles. These hollow particles are formed in such a way that empty space exists on and / or inside the particle. Meaning particles is a component for achieving a low refractive index and antireflection effect.
- hollow particles are not substantially distributed in the first layer, which acts as a hard coat layer of the antireflective film when the composition is applied to the substrate, and acts as a layer on the substrate covering this erosion layer, that is, a low refractive index layer. It may be distributed in the second layer to form hollow particle layers as described above.
- the hollow particles are "do not substantially distributed, inclusive, in the first layer and also is about 5 weight 0/0, based on the total hollow particle content ratio of the hollow particles present in the corrosion layer of the first layer in the substrate below, the black can mean that less than about 3% by weight, or less than about 1 increased 0/0.
- the vaporized particles may not be substantially distributed in the first layer, which is an erosion insect during phase separation, due to density differences or surface energy differences with other components, and may be densely distributed in the second layer serving as a low refractive index layer.
- the second layer serving as a low refractive index layer.
- the hollow particles are not particularly limited as long as the hollow particles exist in the form of empty spaces on the surface and / or inside of the particles, but in one embodiment, silicon compounds or organic compounds are used to secure transparency and / or low refractive index of the low refractive index layer. Hollow silica particles derived from silicon compounds can be used.
- the particle size of the hollow particles may be determined in a range capable of maintaining the transparency of the film and yet exhibit an antireflection effect.
- the hollow particles may have a number average particle diameter of, for example, about 5 to 80 nm, black about 10 to 75 nm, or about 20 to 70 ran.
- the hollow particles may be, for example, about 1 to 30 parts by weight, or about 1 to 25 parts by weight, or about 5 to 20 parts by weight based on 100 parts by weight of the low molecular weight (meth) acrylate-based compound described above. It may be included in the composition. While showing the minimum effect of the hollow particles, In order to be able to form the desired distribution according, the content of the hollow particles can be adjusted in the above-described range.
- the hollow particles may be included in a colloidal phase having a solid content of about 5 to 40% by weight in a form dispersed in a dispersion medium (water or an organic solvent).
- the organic solvent usable as the dispersion medium may include alcohols such as methanol, isopropyl alcohol (IPA), ethylene glycol and butanol; Ketones such as methyl ethyl ketone and methyl iso butyl ketone (MIBK); Aromatic hydrocarbons such as toluene and xylene; Amides such as dimethyl formamide, dimethyl acetamide and N-methyl pyrrolidone; Esters such as ethyl acetate, butyl acetate and ⁇ -butyrolactone; Ethers such as tetrahydroforan and 1,4-dioxane; Or combinations thereof.
- alcohols such as methanol, isopropyl alcohol (IPA), ethylene glycol and butanol
- Ketones such as
- the above-described antireflective coating composition may further include a solvent.
- the solvent serves to control the viscosity of the composition in an appropriate range, and to control the erosion of the binder-forming compounds in the substrate and the smooth phase separation and distribution tendency of the hollow particles.
- a solvent having a dielectric constant (25 ° C.) of about 20 to 30 and a dipole moment of about 1.7 to 2.8 may be used.
- the solvent capable of stratifying such physical properties include methyl ethyl ketone, ethyl acetate, acetyl acetone, and the like, and any solvent that stirs the above physical properties may be used.
- Examples of such a mixed solvent can be isobutyl ketone, methanol, ethanol, n-butane, i-butanol or t-butanol.
- the solvent satisfying the dielectric constant and dipole moment range is included in an amount of about 60% by weight or more based on the total weight of the solvent included in the composition.
- the solvent in the composition for antireflective coating, the solvent has a low molecular weight
- the solvent may be included in a certain amount or more.
- the solid content may be too low to cause defects during drying and curing, the distribution tendency of the hollow particles may be out of the preferred range.
- the above-described antireflective coating composition may further include a polymerization initiator.
- the polymerization initiator is a compound that can be activated by energy rays such as ultraviolet rays to induce polymerization reaction of the binder ' -forming compound, and a compound conventional in the art can be used.
- polymerization initiators examples include 1-hydroxy cyclonuxylphenyl ketone, benzyl dimethyl ketal, hydroxydimethylacetophenone, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether or benzoin butyl ether, and the like. And various photopolymerization initiators may be used.
- the content of the polymerization initiator may be, for example, about 5 to 25 parts by weight, black to about 5 to 20 parts by weight, or about 5 to 15 parts by weight based on 100 parts by weight of the low molecular weight (meth) acrylate compound. have.
- the content of the polymerization initiator may be higher than a predetermined level.
- mechanical properties such as scratch resistance or abrasion resistance of each layer forming the antireflection film may be lowered, which is not appropriate.
- Figure 2 schematically shows a method of manufacturing an antireflective film of one embodiment using the above-described antireflective coating composition as a flow chart.
- the manufacturing method of such an anti-reflection film comprises the steps of preparing the composition for the anti-reflective coating described above; Applying the anti-reflective coating composition to at least one side of the substrate; Eroding a portion of the compound for forming a binder and the inorganic fine particles onto the substrate while drying the applied composition; And curing the eroded and dried composition to form a first layer covering the eroded region of the substrate and a second layer comprising the vaporizing particles and covering the first layer.
- a solvent having a predetermined physical property in the composition may first dissolve a part of the substrate, and thus, a part of the compound for forming a binder (for example, a (meth) acrylate type having a low molecular weight and a high molecular weight). A portion of the compound) and at least a portion of the inorganic fine particles can be eroded into the substrate. At this time, some of the non-eroded binder-forming compound and inorganic fine particles, and the hollow particles may form a coating layer (eg, a second layer) on the substrate.
- a binder for example, a (meth) acrylate type having a low molecular weight and a high molecular weight
- such a coating layer may remain in a thin thickness on the substrate where the above components are eroded, and hollow particles may be densely present in the coating layer to form hollow particle layers.
- the hollow particles included in the hollow particle layers may be densely distributed in the coating layer such that a distance between neighboring vapor deposition particles is at most about 60 nm or less.
- the first and second (meth) acrylate binders of the first and second layers of crabs are formed, and the first layer, which is an erosion layer in the substrate serving as a hard coat layer, is adjacent to each other.
- a second layer can be formed comprising the hollow particle layers and covering the first layer.
- the anti-reflective film of one embodiment may be formed in a simplified process by erosion and phase separation in the substrate of some components, even if a single coating and curing process using a single composition is applied.
- the antireflection film since the antireflection film has a first layer which acts as a hard coat layer and is formed to be in contact with the second charges in the substrate, it can exhibit excellent interfacial adhesion and mechanical properties.
- such an antireflection film has no separate layer between the first layer and the second layer and has a dense hollow particle in the second layer.
- this hollow the hollow particles contained in the particle layer can be densely distributed in the second layer, so only to 'the hollow particles distance less than a maximum of about 60 nm between neighboring each other .
- the antireflection film may exhibit lower refractive index and excellent antireflection properties. This is because the anti-reflective coating composition described above includes at least two kinds of binder-forming compounds, solvents of predetermined physical properties, and the like, so that erosion and phase separation in the substrate can be optimized.
- the method of applying the composition to at least one side of the substrate may be performed using a conventional coating apparatus and method in the art such as a wire bar.
- the drying step may be performed at a temperature of about 5 to 150 ° C. for about 1 to 60 minutes, and black at about 20 to 120 ° C. to promote phase separation of the composition and erosion into the substrate. For 20 minutes, black may be performed for about 1 to 10 minutes at a temperature of about 30 to 110 ° C.
- the reaction may be initiated by adding energy to the dried composition by irradiation with light or the like, and through this, the erosion and dried composition may be cured.
- This curing step takes about 1 to 600 seconds with an ultraviolet dose of about 0.1 to 2 J / citf or about 2 to 200 seconds with an ultraviolet dose of about 0.1 to 1.5 J / cuf to induce a hardening reaction.
- the dosage may be about 0.2 to IJ / cuf for about 3 to 100 seconds.
- the anti-reflection film of the above-described embodiment can be obtained, and in this anti-reflection film, the ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the second layer serving as the low refractive index layer is
- the hollow particles may be densely distributed in the low refractive index layer to about 70 to 95%, or about 75 to 93%, or about 80 to 90%, or about 85 to 92%.
- Example 1 In addition to the above-described steps, the above-described method for producing an anti-reflection film may be conventionally performed in the art before or after each step . Of course, it can be performed including a step further.
- preferred embodiments are presented to help understand the invention. However, the following examples are only intended to illustrate the invention, and the invention is not limited thereto.
- Silica sol in which silica fine particles are dispersed (dispersion medium: methyl isobutyl ketone and methyl alcohol, solid content 40% by weight, number average particle diameter of silica fine particles: 10 nm, manufacturer: Gaematech, product name: Purisol) about 15.87 parts by weight;
- the colloid solution dispersed the hollow silica (dispersion medium: methyl isobutyl ketone, solids content 20 wt. 0/0, the number average of the hollow silica mouth diameter: 50 nm, Manufacturer: Catalyst Chemical Industry, Product name: MIBK-sol) about 11.33 parts by weight ;
- solvent specifically, about 179.63 parts by weight of methyl ketone (MEK), about 24.07 parts by weight of ethanol, about 24.07 parts by weight of n -butylalcohol and about 24.07 parts by weight of acetylacetone
- MEK methyl ketone
- acetylacetone acetylacetone
- the anti-reflective coating composition was coated with a triacetate cell on a rose film (thickness 80) using a wire bar (9). It was dried for 1 minute in 90 ° C. Aubonn, and then the composition was cured by irradiating it with UV energy of 200 mJ / otf for 5 seconds. Through this, an antireflection film including a hard coat layer formed by erosion in a substrate and a low refractive index layer covering the hard coat layer was obtained.
- the antireflection film according to Example 1 includes a binder hardened by erosion on the substrate 1 and a hard coat layer 2 having inorganic particles dispersed therein (about 3.9). urn); And a low refractive index layer (3) (about 0.15) in which the hollow particles layer 4 is formed in the binder, and the binder cured on the hard coat layer (2).
- the ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the low refractive index layer 3 was about 90%. It was confirmed that the hollow particles are very densely distributed in the low refractive index layer (3). In addition, it was confirmed that the hollow particle layers 4, which are adjacent to each other, are formed in the low refractive index layer 3, and the number of hollow particles spaced apart from the hollow particle layers is total. It was confirmed that only about 5 %% of the number of hollow particles.
- Penta Lee tree hex acrylate (molecular weight 298.3), 100 parts by weight of a fluorine-containing acrylate (trade name: OPTOOL AR110, Manufacturer: DAIKIN, solid content 15 wt. 0/0, and methyl isobutyl ketone solvent) 11.33 parts by weight, and a urethane functional group
- a fluorine-containing acrylate (trade name: OPTOOL AR110, Manufacturer: DAIKIN, solid content 15 wt. 0/0, and methyl isobutyl ketone solvent) 11.33 parts by weight, and a urethane functional group
- a (meth) acrylate compound containing 11.33 parts by weight of an acrylate having a manufacturer
- Silica sol in which silica fine particles are dispersed (dispersion medium: methyl isobutyl ketone and methyl alcohol, solid content 40% by weight, number average particle diameter of silica fine particles: 10 nm, manufacturer: Ga
- colloidal solution in which hollow silica is dispersed (dispersion medium: methyl isobutyl ketone, solid content 20% by weight, number average particle diameter of hollow silica: 50 nm, manufacturer: Catalysis Industry, product name: MIBK-sol) about 11.33 parts by weight;
- solvent specifically, about 179.63 parts by weight of methyl ethyl ketone (MEK), about 24.07 parts by weight of ethanol, about 24.07 parts by weight of n-butyl alcohol and about 24.07 parts by weight of acetylacetone
- MEK methyl ethyl ketone
- an antireflective film was prepared under the same conditions and methods as in Example 1.
- An antireflection film according to Example 2 includes a binder hardened by erosion on the substrate 1 and a hard coat layer 2 (about 2.8) in which inorganic fine particles are dispersed in the binder; And a low refractive index layer (3) having a binder cured on the hard coat layer (2) and hollow particle layers (4) formed therein.
- the ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the low refractive index layer 3 was about 90%. It was confirmed that the hollow particles were very densely distributed in the low refractive index layer 3. In addition, it was confirmed that two to four layers of hollow particle layers 4 are formed in the low refractive index layer 3, and the number of hollow particles spaced apart from the hollow particle layers is about the total number of hollow particles. Only 4% were confirmed.
- the maximum value of the distance between the adjacent hollow particles is Only about 20 nm was confirmed, and some of the hollow particles spaced apart from the hollow particle layers were found to have a distance of about 30 to 150 nm from the hollow particle layers.
- Example 3 the anti-reflection film according to Example 2 was confirmed that as the fluorine-based acrylate is included in the low refractive index layer, phase separation of the composition may occur more smoothly and scratch resistance is also improved.
- Pentaerythritol with respect to 100 parts by weight of a (meth) acrylate compound containing 100 parts by weight of nucleated acrylate (molecular weight 298.3) and 11.33 parts by weight of acrylate having a urethane functional group (manufacturer: KYOEISHA, product name: 510H, molecular weight 2000) ; Fine particles of silica are dispersed silica sol (dispersion medium: methyl isobutyl ketone and methyl alcohol, the solid content of 40 wt. 0/0, the number average particle diameter of the silica fine particles: 10 nm, Manufacturer: Gaematech, product name: Purisol) about 15.87 parts by weight;
- the hollow silica dispersed colloidal solution (dispersion medium: methyl isobutyl ketone, the number average particle diameter of the solid content of 20 wt. 0/0, hollow silica: 50 nm, Manufacturer: Catalyst Chemical Industry, Product name: MIBK-sol) about 11.33 parts by weight;
- a photopolymerization initiator specifically, about 1.11 parts by weight of Darocur-1173, about 6.48 parts by weight of Irgacure-184, about 2.15 parts by weight of Irgacure-819 and about 1.11 parts by weight of Irgacure-907;
- solvent specifically, about 179.63 parts by weight of methyl ethyl ketone (MEK), about 24.07 parts by weight of ethane, about 24.07 parts by weight of n-butyl alcohol, and about 24.07 parts by weight of acetylacetone
- MEK methyl ethyl ketone
- the anti-reflective coating composition was coated on a triacetate cell in a rose film (thickness 80) using a wire bar (9). It was dried in an oven at 90 ° C. for 1 minute and then irradiated with UV energy of 200 mJ / ciif for 5 seconds to cure the composition. As a result, an antireflection film including a hard coat layer formed by erosion in the substrate and a low refractive index layer covering the hard coat layer was obtained.
- the antireflection film according to Example 3 includes a binder hardened by erosion on a substrate and a hard coat layer (about 3.1 m ) in which inorganic fine particles are dispersed in the binder; And a low refractive index layer (about 0.16) in which hollow particles are dispersed in the binder, and a binder cured on the hard coat layer.
- the maximum value of the distance between the adjacent hollow particles is only about 20 nm, and some of the hollow particles spaced apart from the hollow particle layers are It was confirmed that the distance between the hollow particle layer and about 30 ⁇ 150nm.
- Pentaerythritol to 100 parts by weight of a (meth) acrylate compound containing 11.33 parts by weight of hexaacrylate (molecular weight 298.3) and an acrylate having a functional group (manufacturer: SK Cytec, product name: DPHA, molecular weight 524) about;
- Fine particles of silica are dispersed silica sol (dispersion medium: methyl isobutyl ketone and methyl alkoeul, solid content 40 wt. 0/0, the number average particle diameter of the silica fine particles: 10 nm, Manufacturer: Gaematech, product name: Purisol) about 15.87 parts by weight; Colloidal solution in which hollow silica is dispersed (dispersion medium: methyl isobutyl ketone, solid content 20 wt%, number average particle size of hollow silica: 50 nm, manufacturer: Catalysis Industry, product name: MIBK-sol) about 11.33 parts by weight;
- solvent specifically, about 179.63 parts by weight of methyl ethyl ketone (MEK), about 24.07 parts by weight of ethane, about 24.07 parts by weight of n-butyl alcohol and about 24.07 parts by weight of acetylacetone
- MEK methyl ethyl ketone
- a coating composition was prepared.
- the antireflective coating composition was coated with a triacetate cell using a rhodes film (thickness 80 H wire bar (No. 9), which was dried in a 90 ° C. oven for 1 minute and then UV energy of 200 mJ / otf. Was irradiated for 5 seconds to cure the composition.
- an antireflection film including a hard coat layer formed by erosion in a substrate and a low refractive index layer covering the hard coat layer was obtained.
- the antireflection film according to Example 4 includes a binder hardened by erosion on the substrate 1, and a hard coat layer 2 having inorganic particles dispersed therein (about). 2.78 mi); And a low refractive index layer (3) (about 0.18) in which the hollow cured layer 4 is formed in the binder and the binder cured on the hard coat layer 2.
- the ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the low refractive index layer 3 was about 90%. It was confirmed that the hollow particles are very densely distributed in the low refractive index layer (3). In addition, it was confirmed that three to five hollow particle layers adjacent to each other are formed in the low refractive index layer 3. The number of hollow particles spaced apart from the hollow particle layers was found to be only about 3% of the total number of hollow particles.
- Pentaerythritol to 100 parts by weight of nucleated acrylate (PETA);
- Fine particles of silica sol is a dispersion of silica (dispersion medium: methyl isobutyl ketone and methyl alcohol, the solid content of 40 wt. 0/0, the number average particle diameter: 10 nm, Manufacturer: Gaematech, product name: Purisol) 15.87 parts by weight
- colloidal solution of a hollow silica dispersion (dispersion medium: jjetil ketone, solids content 20 wt. 0/0, the number of hollow silica average particle diameter: 50 nm, Manufacturer: Catalyst Chemical Industry, Product name: MIBK-sol) about 11.33 parts by weight
- a photopolymerization initiator specifically, about 1.11 parts by weight of Darocur-1173, about 6.48 parts by weight of Irgacure-184, about 2.15 parts by weight of Irgacure-819, and about 1.11 parts by weight of Irgacure-907;
- solvent specifically, about 125.91 parts by weight of methyl isobutyl ketone, about 41.98 parts by weight of ethanol, about 41.98 parts by weight of n-butyl alcohol and about 41.98 parts by weight of acetylacetone
- solvent specifically, about 125.91 parts by weight of methyl isobutyl ketone, about 41.98 parts by weight of ethanol, about 41.98 parts by weight of n-butyl alcohol and about 41.98 parts by weight of acetylacetone
- an antireflective film was prepared under the same conditions and methods as in Example 1. And the cross-sectional photograph of the said antireflection film was shown to FIG. 6 (a), and the photograph which expanded and observed the part is shown to FIG. 6 (b).
- the antireflection film according to Comparative Example 1 did not properly phase separation of the composition (circle portion of Figure 6a)
- the appearance of the film was opaque, and the scratch resistance and the antireflection effect were also found to be inferior ( Experimental example).
- the ratio of the cross-sectional area of the hollow particles to the arbitrary cross-sectional area in the total area where the hollow particles were distributed was about 30 to 60%.
- the anti-reflection film according to the embodiments was lower than the film of the comparative examples, while the transmittance was higher, scratch resistance and adhesion was excellent.
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Abstract
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EP12827486.7A EP2749914B1 (en) | 2011-08-26 | 2012-06-15 | Anti-glare film |
CN201280041691.9A CN103765251B (zh) | 2011-08-26 | 2012-06-15 | 防眩膜 |
US13/841,308 US8795825B2 (en) | 2011-08-26 | 2013-03-15 | Anti-reflective coating film |
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