EP2209855A2 - Composition de revetement antireflet, film antireflet et procede de preparation associe - Google Patents

Composition de revetement antireflet, film antireflet et procede de preparation associe

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Publication number
EP2209855A2
EP2209855A2 EP08849489A EP08849489A EP2209855A2 EP 2209855 A2 EP2209855 A2 EP 2209855A2 EP 08849489 A EP08849489 A EP 08849489A EP 08849489 A EP08849489 A EP 08849489A EP 2209855 A2 EP2209855 A2 EP 2209855A2
Authority
EP
European Patent Office
Prior art keywords
coating composition
weight
coating
parts
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08849489A
Other languages
German (de)
English (en)
Other versions
EP2209855A4 (fr
Inventor
Hansik Yun
Hye-Min Kim
Boo-Kyung Kim
Yeong-Rae Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080035891A external-priority patent/KR20090049519A/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Publication of EP2209855A2 publication Critical patent/EP2209855A2/fr
Publication of EP2209855A4 publication Critical patent/EP2209855A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/006—Anti-reflective coatings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
    • B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/42—Gloss-reducing agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/68—Particle size between 100-1000 nm
    • 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
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/16—Halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles

Definitions

  • the present invention relates to a coating composition for antireflection, an antireflection film manufactured using the coating composition for antireflection, and a method of manufacturing the antiref lection film. More particularly, the present invention relates to a coating composition for antireflection, in which although a single coating composition containing resins that have a refractive index different from each other is used to form a single coating layer by one coating process, phase separation occurs on the single coating layer, thereby providing antiref lection characteristic and abrasion resistance simultaneously; an antiref lection film manufactured using the coating composition for antireflection; and a method of manufacturing the ant iref lection film.
  • An object to perform a surface treatment on the surface of a display is to improve image contrast by improving the abrasion resistance of the display and decreasing the reflection of light emitted from an external light source.
  • the decrease of the reflection of external light can be achieved by two methods. One method causes diffused reflection by using convexo-concave shape on the surface, and the other method causes destructive interference by using a multi-coating design.
  • Ant i-glare coating using the convexo-concave shape on the surface has been generally used in the related art.
  • problems in that resolution deteriorates in a high-resolution display and the sharpness of an image deteriorates due to diffused reflection have been problems in that resolution deteriorates in a high-resolution display and the sharpness of an image deteriorates due to diffused reflection.
  • Japanese Patent Application Publication No.11-138712 has disclosed a light-diffusion film where light is diffused in a film that is manufactured by using organic filler having a refractive index different from a binder.
  • luminance and contrast deteriorate the light-diffusion film needs to be modified.
  • a method of causing the destructive interference of reflected light by a multi-coating design has been disclosed in Japanese Patent Application Publication Nos. 02-234101 and 06-18704. According to this method, it is possible to obtain antireflection characteristic without the distortion of an image.
  • light reflected from layers should have phase difference in order to allow reflected light to destructively interfere, and a waveform of reflected light should have amplitude so that reflectance can be minimized reflectance during the destructive interference.
  • an incidence angle with respect to a single antireflection coating layer provided on the substrate is 0°, the following expressions can be obtained.
  • n 0 the refractive index of air
  • n s the refractive index of a substrate
  • ni the refractive index of a film
  • d ⁇ the thickness of the film
  • ⁇ the wavelength of incident light
  • the refractive index of the ant ireflect ion coating layer is smaller than the refractive index of the substrate, ant i reflect ion is effective.
  • the refractive index of the antiref lection coating layer is 1.3 to 1.5 times of the refractive index of the substrate. In this case, the reflectance is smaller than 3%.
  • a hard coating layer of several microns needs to be provided below the antiref lection coating layer.
  • the antiref lection coating layer using the destructive interference includes a hard coating layer for reinforcing abrasion resistance, and one to four antiref lection coating layers that are formed on the hard coating layer. Accordingly, the multi-coating method obtains antiref lection characteristic without the distortion of an image. However, there is still a problem in that manufacturing cost is increased due to the multi-coat ing.
  • a method of allowing reflected light to destructively interfere by a single coating design has been proposed in recent years.
  • the following method has been disclosed in Japanese Patent Application Publication No. 07-168006.
  • ultrafine particle-dispersed liquid is applied on a substrate, and the spherical shapes of fine particles are exposed to the surface so that the difference in refractive index is gradually generated between air (interface) and the particle.
  • the shape and size of the ultrafine particles should be uniform and these particles should be uniformly distributed on the substrate, it is difficult to achieve this method by general coating processes.
  • the amount of a binder should be equal to or smaller than a predetermined amount in order to obtain a spherical shape on the surface of the film, there is a problem in that this method is very vulnerable to abrasion resistance. Further, since the coating thickness should be also smaller than the diameter of the fine particle, it is very difficult to obtain abrasion resistance.
  • an object of the prevent invention is to provide a coating composition for antiref lection, in which although the single coating composition is used to form a coating layer by one coating process, phase separation occurs on the coating layer to provide antiref lection characteristic and abrasion resistance simultaneously, thereby improving process efficiency and reducing manufacturing cost ; an ant i reflect ion film manufactured using the coating composition for antiref lection! and a method of manufacturing the ant iref lection film.
  • the present invent ion provides a coat ing composit ion for ant iref lect ion that includes a low refractive material having a refractive index of 1.2 to 1.45 and a high refractive resin having a refractive index of 1.46 to 2, in which the difference in the surface energy between two materials is 5 mN/m or more.
  • the present invention provides a method of manufacturing an antiref lection film, comprising the steps of a) preparing a coating composition for antiref lection that includes a low refractive material having a refractive index of 1.2 to 1.45 and a high refractive resin having a refractive index of 1.46 to 2, in which the difference in the surface energy between two materials is 5 mN/m or more! b) applying the coat ing composit ion on a substrate to form a coat ing 1 ayer ; c) drying the coating layer to allow phase separation of the low and high refractive materials; and d) curing the dried coating layer.
  • the coating composition for ant ireflect ion may further include a fluorinated compound or nanoparticle-dispersed liquid in order to facilitate phase separation of the low and high refractive materials.
  • the present invention provides an ant ireflect ion film comprising a single coating layer that includes a low refractive material having a refractive index of 1.2 to 1.45 and a high refractive resin having a refractive index of 1.46 to 2, in which the difference in the surface energy between two materials is 5 mN/m or more and the low and high refractive materials have a concentration gradient in a thickness direction.
  • the present invention provides a polarizing plate, comprising a) a polarizing film, and b) the ant ireflect ion film according to the prevent invention that is provided on at least one side of the polarizing film.
  • the present invention provides a display device, comprising the ant iref lection film or the polarizing plate.
  • the present invention can provide an antireflection film including an antireflection layer that has excellent antireflection characteristic and abrasion resistance, in which the antireflection layer is composed of a singe coating layer. Since the antireflection film according to the present invention has excellent abrasion resistance and low refractive characteristic, and can be manufactured by one coating process, it is possible to improve process efficiency and reduce manufacturing cost.
  • FIG. 1 is a transmission electron microscope image showing a cross-sectional view of the ant ireflect ion film according to Example 1.
  • the coating composition for antireflection according to the present invention is characterized in that it includes a low refractive material having a refract ive index of 1.2 to 1.45 and a high refractive resin having a refractive index of 1.46 to 2, and the difference in the surface energy between two materials is 5 mN/m or more. Phase separation may occur due to the difference in the surface energy between the low and high refractive materials by using the coating composition for antireflection during coating, drying and curing processes. Therefore, excellent ant ireflect ion characteristic and abrasion resistance can be provided, even though one coating process is performed using a single composition.
  • the surface energy is measured in cured products that are produced by curing the materials.
  • the low refractive material gradually moves toward the upper portion of the coating layer due to the difference in the surface energy between the low and high refractive materials, and the high refractive material is located in the lower portion of the coating layer.
  • the low refractive material is a thermosetting material that is flexible at room temperature and gradually cured according to temperature.
  • the low refractive material preferably has a surface energy of 25 mN/m or less, and more preferably 5 mN/m to 25 mN/m.
  • the low refractive material is contained in an amount of 5 to 80 parts by weight, and the high refractive material is contained in an amount of 10 to 90 parts by weight, based on 100 parts by weight of the total coating composition.
  • the low refract ive-thermosett ing material is a thermosetting material that has a refractive index in the range of 1.2 to 1.45.
  • an alkoxysilane reactant that may cause a sol-gel reaction, a urethane reactive group compound, a urea reactive group compound, an ester ificat ion reactant or the like may be used as the low refract ive-thermosett ing resin.
  • the alkoxysilane reactant is a reactive oligomer that is manufactured by performing hydrolysis and a condensation reaction of alkoxysilane, fluorinated alkoxysilane, si lane-based organic substituents under the conditions of water and a catalyst through a sol-gel reaction.
  • the sol-gel reaction may adopt any method commonly used in the art.
  • the sol-gel reaction is conducted at a reaction temperature of 0 to 150 ° C for 1 to 70 hours, including alkoxysilane, fluorinated alkoxysilane, catalyst, water and organic solvent.
  • alkoxysilane when being measured by GPC (Gel Permeation Chromatography) while polystyrene is used as a reference material, the average molecular weight of the reactive oligomer, alkoxysilane is preferably in the range of 1,000 to 200,000.
  • a condensation reaction is performed at a temperature equal to or higher than room temperature after coating, so that the alkoxysilane reactant manufactured as described above forms a net having the cross-linking structure.
  • the alkoxysilane can give strength to a level required in an outermost thin film.
  • the alkoxysilane may adopt tetraalkoxysi lanes or trialkoxysi lanes.
  • the alkoxysilane is preferably at least one selected from the group consisting of tetramethoxy si lane, tetraethoxy si lane, tetraisopropoxysilane, methyltrimethoxysi lane, methyltriethoxysilane, glycydoxy propyl trimethoxysilane, and glycydoxy propyl triethoxysilane, but is not limited thereto.
  • the basic monomer alkoxysi lane is preferably contained in an amount of 5 to 50 parts by weight, based on the 100 parts by weight of the alkoxysilane reactant. If the content is less than 5 parts by weight, it is difficult to obtain excellent abrasion resistance. If the content is more than 50 parts by weight , it is difficult to achieve low refractive characteristic of the alkoxysilane reactant and phase separation from the high refractive material.
  • the fluorinated alkoxysilane lowers the refractive index and surface tension of the coating thin film to facilitate the phase separation from the high refractive material.
  • the fluorinated alkoxysilane is preferably a low refractive material having low refractive index of 1.3 to 1.4 and low surface tension of 10 to 15 mN/m.
  • the fluorinated alkoxysilane is preferably one or more selected from the group consisting of tridecaf luoroocty11r iethoxysi 1ane , heptadecafluorodecyltrimethoxysi lane, and heptadecaf luorodecyltriisopropoxysilane, but is not limited thereto.
  • the content of the fluorinated alkoxysilane is preferably 10 to 70 parts by weight, based on 100 parts by weight of the alkoxysilane reactant. If the content is less than 10 parts by weight, it is difficult to achieve low refractive characteristic and phase separation from the high refract ive material . If the content is more than 70 parts by weight, it is difficult to ensure the stability and scratch resistance of the solution.
  • the si lane-based organic substituent can chemically bind with alkoxysilane, form a double bond with the high refractive material to improve compatibility of low and high refractive materials, and improve adherence of alkoxysilane and the high refractive material after phase separation.
  • any compound may be used without limitation, as long as it has the above functions.
  • the si lane-based organic substituent is preferably one or more selected from the group consisting of vinyl tr imethoxy si lane, vinyl tri(beta-methoxyethoxy)si lane, vinyl triethoxy si lane, vinyl tri-n-propoxy si lane, vinyl tr i-n-pentoxy si lane, vinylmethyl dimethoxy si lane, diphenyl ethoxy vinylsilane, vinyl triisopropoxy si lane, divinyl di (beta-methoxyethoxy)si lane, divinyl dimethoxy si lane, divinyl diethoxy si lane, divinyl di-n-propoxy si lane, divinyl di(isopropoxy) si lane, divinyl di-n-pentoxy si lane, 3-acryloxypropyl trimethoxy si lane, 3-methacryloxypropyl trimethoxy si lane, gamma-methacryloxypropyl methyl diethoxy si
  • the content of the si lane-based organic substituent is preferably 0 to 50 parts by weight, based on 100 parts by weight of the alkoxysilane reactant. If the content is more than 50 parts by weight , it is difficult to achieve low refractive characteristic and phase separation from the high refractive material. In addition, if the si lane-based organic substituent is not added thereto, the compatibility of the low refractive material for the high refractive material is not sufficient, and thus the coating solution may not be mixed well.
  • the catalyst to be used in the sol-gel reaction is an ingredient that is required for controlling the sol-gel reaction time.
  • the catalyst is preferably an acid such as nitric acid, hydrochloric acid, sulfuric acid, and acetic acid, and more preferably hydrochloride, nitrate, sulfate, or acetate of zirconium or indium, but is not limited thereto.
  • the catalyst is preferably used in the amount of 0.1 to 10 parts by weight , based on 100 parts by weight of the alkoxysilane reactant .
  • the water to be used in the sol-gel reaction is required for hydrolysis and condensation, and is used in the amount of 5 to 50 parts by weight, based on 100 parts by weight of the alkoxysilane reactant.
  • the organic solvent to be used in the sol-gel reaction is an ingredient to control a molecular weight of hydrolysis condensate.
  • the organic solvent is preferably a single solvent or a mixed solvent selected from the group consisting of alcohols, cellosolves and ketones.
  • the organic solvent is preferably contained in an amount of 0.1 to 50 parts by weight , based on 100 parts by weight of the alkoxysi lane reactant .
  • the urethane react ive group compound may be manufactured by the reaction between alcohol and an isocyanate compound while a metal catalyst is used. If a solution including a metal catalyst, multifunctional isocyanate, and multifunctional alcohol having two or more functional groups is maintained at a temperature equal to or higher than room temperature, it is possible to form the net structure including a urethane reactive group.
  • a fluorine group may be introduced in the alcohol or the isocyanate, in order to achieve low refractive characteristic and induce phase separation from the high refractive material.
  • Examples of the multifunctional alcohol containing fluorine may include IH, IH,4H,4H-perf luoro-l,4-butanediol , IH, IH, 5H, 5H-perf1uoro-1 ,5-pentanedio1 ,
  • Aliphatic isocyanate, cycloaliphatic isocyanate, aromatic isocyanate, or heterocyclic isocyanate may be preferably used as an isocyanate ingredient that is used to manufacture the urethane reactive group compound.
  • di isocyanate such as hexamethylene diisocyanate, 1,3,3-trimethylhexamethylene diisocyanate, isophorone diisocyanate, toluene-2,6-diisocyanate, and 4,4'-dicyclohexane diisocyanate, or three or more functional isocyanate, for example, DN950 and DN980 (trade name) manufactured by DIC corporation may be preferably used as the isocyanate ingredient.
  • DN950 and DN980 trade name
  • a catalyst may be used to manufacture the urethane reactive group compound.
  • a Lewis acid or a Lewis base may be used as the catalyst.
  • Specific examples of the catalyst may include tin octylate, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin mercaptide, dibutyltin dimaleate, dimethyltin hydroxide, and triethylamine, but are not limited thereto.
  • the content of the isocyanate and the multifunctional alcohol, which are used to manufacture the urethane reactive group compound, is preferably set so that the molar ratio (NCO/OH) of the functional groups, a NCO group and an OH group is preferably in the range of 0.5 to 2, and more preferably in the range of 0.75 to 1.1. If the mole ratio of the functional groups is less than 0.5 or exceeds 2, the unreacted functional groups are increased. As a result, there may be a problem in that the strength of the film deteriorates.
  • the urea react ive group compound may be manufactured by the react ion between amine and isocyanates.
  • the manufacture of the urea react ive group compound may employ isocyanates, which is the same as the isocyanates used to manufacture the urethane reactive group compound. Two or more functional perfluoro amines may be used as the amines. If necessary, a catalyst may be used in the present invention. A Lewis acid or a Lewis base may be used as the catalyst. Specific examples of the catalyst may include tin octylate, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin mercaptide, dibutyltin dimaleate, dimethylt in hydroxide, and triethylamine, but are not limited thereto.
  • the esterification reactant may be obtained by the dehydration and condensation reaction between an acid and alcohol . If the esterification reactant is also mixed in the coating composition, it is possible to form a film having the cross-linking structure. It is preferable that two or more functional acids including fluorine are used as the acid. Specific examples thereof may include perfluorosucinic acid, perf luoroglutaric acid, perfluoroadipic acid, perfluorosuberic acid, perf luoroazelaic acid, perf luorosebacic acid, and perfluorolauric acid.
  • the multifunctional alcohol is preferably used as the alcohol.
  • Examples of the multifunctional alcohol include 1,4-butanediol , 1,2-butanediol , 1,5-pentanediol , 2,4-pentanediol , 1,4-cyclohexanediol , 1,6-hexanediol , 2,5-hexanediol , 2,4-heptanediol , pentaerythrito1 , and trimethylolpropane, but are not limited thereto.
  • An acid catalyst such as a sulphuric acid or alkoxytitan such as tetrabutoxytitan may be used in the esterif ication reaction.
  • the material used in the esterif ication reaction is not limited to the above-mentioned material.
  • the high refractive material is a resin having a refractive index of 1.45 to 2, which is relatively higher than that of the low refractive material, and the difference in the surface energy between the cured products of high and low refractive materials is 5 mN/m or more. It is preferable that the cured product of the high refractive material has the surface energy of 5 mN/m or higher than that of the low refractive material .
  • the high refractive material is preferably a high refractive ultraviolet curable resin.
  • the materials for the high refractive ultraviolet curable resin may include an acrylate resin, a photoinitiator and a solvent , i f necessary, a surfactant .
  • the acrylate resin may include acrylate monomer, urethane acrylate oligomer, epoxy acrylate oligomer, and ester acrylate oligomer .
  • the ultraviolet curable resin may contain a substituent , such as sulfur , chlorine, and metal, or an aromatic material in order to obtain a high refractive index.
  • Examples thereof may include dipentaerythritol hexaacrylate, pentaerythritol tri/tetra acrylate, trimethylene propane triacrylate, ethylene glycol diacrylate, 9,9-bis(4-(2-acryloxy ethoxy phenyl) fluorine (refractive index: 1.62), bis(4-methacryloxythiophenyl)sulphide (refractive index: 1.689), and bis(4-vinylthiophenyl)sulphide (refractive index: 1.695).
  • the mixture of one or two or more thereof may be used.
  • the content of the acrylate resin is preferably 10 to 80 parts by weight, based on 100 parts by weight of the high refractive material . If the content is less than 10 parts by weight, there are problems in that scratch resistance and abrasion resistance of the coating film may deteriorate, and viscosity of the coating solution may be significantly reduced not to transfer to a coat ing machine and substrate. If the content is more than 80 parts by weight , it is difficult to achieve phase separation from the low refractive material due to high viscosity of the coating solution, and there is a problem in that flatness and coating nature of the coating film may deteriorate.
  • the photoinitiator is preferably a compound degradable by UV, and examples thereof may include 1-hydroxy cyclohexyl phenyl ketone, benzyl dimethyl ketal, hydroxy dimethyl acetophenone, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin butyl ether.
  • the photoinitiator is preferably used in an amount of 1 to 20 parts by weight, based on 100 parts by weight of the high refractive material .
  • the content is more than 20 parts by weight, scratch resistance and abrasion resistance of the coating film may deteriorate.
  • the solvent may include alcohols, acetates, ketones, aromatic solvents or the like.
  • Specific examples of the solvent may include methanol , ethanol, isopropyl alcohol, butanol, 2-methoxy ethanol , 2-ethoxy ethanol , 2-butoxy ethanol , 2-isopropoxy ethanol , methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone, cyclohexane, eye1ohexanone, toluene, xylene, and benzene, but are not limited thereto.
  • the solvent is preferably used in an amount of 10 to 90 parts by weight, based on 100 parts by weight of the high refractive material. If the content is less than 10 parts by weight, it is difficult to achieve phase separation from the low refractive material due to high viscosity of the coating solution, and there is a problem in that flatness of the coating film may deteriorate. If the content is more than 90 parts by weight, there are problems in that scratch resistance and abrasion resistance of the coating film may deteriorate, and viscosity of the coating solution may be significantly reduced not to transfer to a coating machine and substrate.
  • the high refractive ultraviolet curable resin may further include a surfactant.
  • a surfactant may include a levelling agent or a wetting agent, in particular, fluorine compounds or polysiloxane compounds, but is not limited thereto.
  • the surfactant is preferably used in an amount of 5 parts by weight , based on 100 parts by weight of the high refractive material. If the content is more than 5 parts by weight, it is difficult to achieve phase separation from the low refractive material, and there are problems in that adherence to the substrate, scratch resistance and abrasion resistance of the coating film may deteriorate.
  • the surfactant is preferably added in an amount of 0.05 or more parts by weight, based on 100 parts by weight of the high refractive material, in order to obtain its sufficient effect.
  • the difference in the refractive indices of the cured products of the above mentioned low and high refractive materials is preferably 0.01 or more.
  • the single coating layer functionally forms a GRIN (gradient refractive index) structure consisting of two or more layers, so as to obtain an antiref lection effect .
  • GRIN gradient refractive index
  • the coating composition for antiref lection according to the present invention may further include at least one of a f luorinated compound and nanoparticle-dispersed liquid in order to facilitate phase separation of the low and high refractive materials.
  • the f luorinated compound has a refractive index of 1.5 or less, a molecular weight being smaller than that of the low refractive material, and a surface energy between those of high and low refractive materials.
  • the fluorinated compound is preferably contained in an amount of 0.05 to 72 parts by weight, based on 100 parts by weight of the total coating composition.
  • the fluorinated compound is the low refract ive-thermosett ing resin such as fluorinated alkoxysilane, fluorinated alcohol, fluorinated isocyanate, fluorinated amines, and two or more functional acids containing fluorine, and preferably one or more materials selected from the group consisting of the exemplified fluorinated compounds, one ore more fluorinated acrylates further having a Ci-C ⁇ straight or branched chain hydrocarbon group as a substituent, which are represented by the following Formulae 1 to 5, various fluorinated additives such as a levelling agent, a dispersing agent, a surface-modification agent, a wetting agent, a defoamer, and a compatibilizer , which contain fluorine, and fluorinated solvents.
  • Formulae 1 various fluorinated additives
  • R 1 is -H or C 1 -Ce hydrocarbon
  • a is an integer of 0 to 4
  • b is an integer of 1 to 3.
  • the C 1 -C 6 hydrocarbon group is preferably a methyl group (-CH3) .
  • d is an integer of 1 to 9.
  • e is an integer of 1 to 5.
  • f is an integer of 4 to 10.
  • the f luorinated compound is preferably used in the range of keeping low refractive characteristic of the coating film, strength of the coating film and adherence to a display substrate, in particular, in an amount of 1 to 90 parts by weight, based on 100 parts by weight of the low refractive material .
  • the nanoparticle-dispersed liquid contains nanoparticles having an average particle size of 1,000 nm or less, preferably 1 to 200 nm or less, and more preferably 2 to 100 nm, in order to obtain a visible light scattering or diffusion-free transparent film.
  • the nanoparticle-dispersed liquid preferably has a refractive index of 1.45 or less.
  • the nanoparticle-dispersed liquid may further include a dispersion-enhancing chelating agent, a fluorinated acrylate, a solvent or the like.
  • the nanoparticle-dispersed liquid is preferably contained in an amount of 2 to 27 parts by weight, based on 100 parts by weight of the total coating composition.
  • the nanoparticle may be metal fluoride, other organic/inorganic hollow and porous particles.
  • metal fluoride is a particle having an average particle size of 10 to 100 nm, and includes one or more selected from the group consisting of NaF, LiF, AIF3, NasA ⁇ Fu, Na3AlF 6 , MgF2, NaMgF3 and YF3.
  • the nanoparticle is preferably used in the range of keeping low refractive characteristic of the coating film, strength of the coating f i Im and adherence to a display substrate.
  • the nanoparticle is preferably contained in an amount of 5 parts by weight to 70 parts by weight, based on 100 parts by weight of the nanoparticle-dispersed liquid.
  • the dispersion-enhancing chelating agent is a liquid component used for endowing compatibility between the high and low refractive materials and nanoparticles such that the nanoparticles does not easily lump, and also preventing the coating film from being misty.
  • the dispersion-enhancing chelating agent may be added, if necessary.
  • the dispersion-enhancing chelating agent preferably adopts one or more materials selected from the group consisting of Mg(CF3C00)2, Na(CFsCOO), K(CF 3 COO), Ca(CF 3 COO) 2 , Mg(CF 2 COCHCOCF 3 ) 2> Na(CF 2 COCHCOCF 3 ), Zr(AcAc), Zn(AcAC), Ti(AcAc), and Al(AcAc), wherein AcAc is acetyl acetone.
  • the solvent may be preferably DAA, AcAc, and cellosolves, but is not limited thereto.
  • the dispersion-enhancing chelating agent is preferably used in the range of keeping dispersion of nanoparticles, strength of the coating film, and adherence to a display substrate. Specifically, the dispersion-enhancing chelating agent is preferably used in an amount of 10 to 80 parts by weight, based on 100 parts by weight of the nanoparticle-dispersed liquid.
  • the fluorinated acrylate is used for endowing compatibility with the high and low refractive materials and film strength by chemical bonding, and may be one or more materials selected from the group consisting of the compounds that are represented by Formulae 1 to 5 and further contain a Ci-C ⁇ hydrocarbon group as a substituent.
  • the fluorinated acrylate is preferably used in an amount of 80 parts by weight or less, based on 100 parts by weight of the nanoparticle-dispersed liquid.
  • solvent for the nanoparticle-dispersed liquid may include alcohols, acetates, ketones, or aromatic solvents, in particular , methanol, ethanol, isopropyl alcohol, butanol, 2-methoxy ethanol,
  • 2-ethoxy ethanol 2-butoxy ethanol , 2-isopropoxy ethanol , methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone, cyclohexane, eye1ohexanone , toluene, xylene, benzene or the like.
  • the solvent is preferably used in an amount of 10 to 90 parts by weight, based on 100 parts by weight of the nanoparticle-dispersed liquid.
  • the present invention provides an ant ireflect ion film manufactured by using the above-mentioned coating composition for antiref lection, and a method of manufacturing the same.
  • the method of manufacturing an antireflection film according to the present invention comprises the steps of a) preparing the above-mentioned coating composition for ant i reflect ion; b) applying the coating composition on a substrate to form a coating 1ayer ; c) drying the coating layer to allow phase separation of the low and high refractive materials; and d) curing the dried coating layer.
  • the substrate may be glass, plastic sheet and film, and its thickness is not limited.
  • the plastic film may include a triacetate cellulose film, anorbornene eyeloolef in polymer, a polyester film, a poly methacrylate film, and a polycarbonate film, but are not limited thereto.
  • the method of applying the coating composition may adopt various methods such as bar coating, two-roll or three-roll reverse coating, gravure coating, die coating, micro gravure coating, and comma coating, which may be selected depending on types of the substrate and liquid phase or rheological properties of the coating solution without any restriction.
  • the coating thickness is not specifically limited, but preferably in the range of 0.5 to 30 ⁇ m, and a drying process for drying a solvent is performed after the coating process. After the drying process, if the coating thickness is less than 0.5 ⁇ m, the abrasion resistance is not sufficiently improved. If the coating thickness is more than 30 ⁇ m, it is difficult to achieve phase separation of the low and high refractive materials, so as not to obtain a desirable refractive characteristic.
  • the drying process may be performed at a temperature of 40 to 150 0 C for 0.1 to 30 min in order to remove the organic solvent from the coating composition and gradually cure the low refractive material in the upper portion of the coating layer. If the temperature is less than 40 ° C, the organic solvent is not completely removed to deteriorate the degree of cure upon UV curing. If the temperature is more than 150 ° C, the curing may occur before the low refractive material positions in the upper portion of the coating layer.
  • the curing process may be performed by UV or heat depending on types of the used resin.
  • the UV curing process is first performed, followed by heat curing process.
  • the UV curing process may be performed at UV radiation dose of 0.01 to 2 J/cm 2 for 1 to 600 sec to provide the coating layer with sufficient abrasion resistance. If the UV radiation dose is not within the above range, an uncured resin remains on the coating layer, and thus the surface becomes sticky not to ensure abrasion resistance. If the UV radiation dose exceeds the above range, the degree of the UV curable resin is too increased, and thus the curing of the thermosetting resin may be prevented in the heat curing step.
  • the heat curing may be performed at a temperature of 20 to 200 ° C for 1 to 72 hrs. If the temperature is less than 20°C, the curing rate is too low to reduce the curing time. If the temperature is more than 200 ° C , there is a problem in stability of the coating substrate.
  • the curing process is preferably performed for 1 to 72 hrs, and in order to maximize the scratch resistance of the coating layer, the thermosetting resin should be sufficiently cured.
  • the ant iref lection film according to the present invention prepared by using the above-mentioned coating composition for ant iref lection, comprises a single coating layer that includes a low refractive resin having a refractive index of 1.2 to 1.45 and a high refractive material having a refractive index of 1.46 to 2, preferably further includes at least one of the fluorinated compound and nanoparticle-dispersed liquid, in which the difference in the surface energy between two materials is 5 mN/m or more and the low and high refractive materials have has a concentration gradient in a thickness direction.
  • the ant ireflection film may further include a substrate provided on one side of the coating layer.
  • the low refractive material which is included in a region corresponding to 50% in a thickness direction from the surface of the coating layer facing air, is preferably 70% or more, more preferably 85% or more, and most preferably 95% or more, based on the total weight of the low refractive material .
  • the antiref lection film according to the present invention has a reflectance of less than 3% to exhibit the excellent antiref lection effect.
  • the present invention provides a polarizing plate comprising the above-mentioned antireflection film according to the prevent invention.
  • the polarizing plate according to the present invention comprises a) a polarizing film, and b) the antiref lection film according to the prevent invention that is provided on at least one side of the polarizing film.
  • a protection film may be provided between the polarizing film and the antireflection film.
  • the substrate which is used to form the single coating layer during the manufacture of the antireflection film, may be used as the protection film, as it is.
  • the polarizing film and the antireflection film may be combined with each other by an adhesive.
  • the polarizing film known in the art may be used.
  • the present invention provides a display device that includes the antiref lection film or the polarizing plate.
  • the display device may be a liquid crystal display or a plasma display.
  • the display device according to the present invention may have the structure known in the art, except for the fact that the antiref lection film according to the present invention is provided.
  • the antiref lection film may be provided on the outermost surface of a display panel facing an observer or on the outermost surface thereof facing a backlight.
  • the display device according to the present invention may include a display panel, a polarizing film that is provided on at least one side of the panel , and an antiref lection film that is provided on the side opposite to the side of the polarizing film facing the panel.
  • IH, lH,12H,12H-perf luoro-1 ,12-dodecanediol including fluorine, 0.7 parts by weight of dibutyltin dilaurate as a metal catalyst, and 35 parts by weight of each of diacetone alcohol (DAA) and methyl ethyl ketone (MEK) as a solvent were uniformly mixed to prepare a low refract ive-thermosett ing solution.
  • DAA diacetone alcohol
  • MEK methyl ethyl ketone
  • a mixture of 10 parts by weight of tetraethoxysi lane, 30 parts by weight of heptadecaf luorodecyltrimethoxysilane, 20 parts by weight of methacryl trimethoxysilane, 10 parts by weight of water, 0.5 parts by weight of hydrochloric acid, 40 parts by weight of ethanol, and 40 parts by weight of 2-butanol was subjected to sol-gel reaction at room temperature for 12 hrs to prepare a low refract ive-thermosett ing solution.
  • material C material
  • DPHA dipentaerythritol hexaacrylate
  • Darocur 1173 as an UV initiator
  • 35 parts by weight of each of diacetone alcohol (DAA) and methyl ethyl ketone (MEK) as a solvent were uniformly mixed to prepare a high refract ive-UV curable solution.
  • DAA diacetone alcohol
  • MEK methyl ethyl ketone
  • DPHA dipentaerythritol hexaacrylate
  • a mixture of 5 parts by weight of fluoroaIkylethoxysi lane, 37 parts by weight of tetramethoxysilane, 10 parts by weight of vinyl trimethoxy si lane, 7.5 parts by weight of water , 0.5 parts by weight of nitric acid, and 40 parts by weight of methanol was subjected to sol-gel reaction at room temperature for 24 hrs to prepare a low refract ive-thermosett ing solution.
  • Preparation of high refractive-UV curable material (material H)> 20 parts by weight of pentaerythritol tri/tetra acrylate as multifunctional acrylate for improving the strength of a coating film, 10 parts by weight of trimethylenepropanetriaerylate, 1 part by weight of Darocur 1173 as an UV initiator, 5 parts by weight of BYK 333 and 4 parts by weight of BYK371 as a surfactant, 20 parts by weight of ethanol , 20 parts by weight of n-butyl alcohol, and 20 parts by weight of methyl ethyl ketone (MEK) as a solvent were uniformly mixed to prepare a high refract ive-UV curable solution.
  • material H 20 parts by weight of pentaerythritol tri/tetra acrylate as multifunctional acrylate for improving the strength of a coating film, 10 parts by weight of trimethylenepropanetriaerylate, 1 part by weight of Darocur 1173 as an UV initiator
  • Example 1 30 parts by weight of the low refract ive-thermosett ing material A and 70 parts by weight of the high refract ive-UV curable material E were uniformly mixed to prepare a coating composition for antiref lection.
  • the prepared composit ion was appl ied to a triacetate eel lulose f i Im having a thickness of 80 ⁇ m using a wire bar (No. 5).
  • the film was dried in an oven at 60 ° C for 2 min, and cured by UV radiation at a dose of 1 J/cm ⁇ followed by heat curing in the oven at 120°C for a day.
  • the final coating layer had a thickness of 1 ⁇ m, and its cross-section was observed under a transmission electron microscope, shown in FIG. 1.
  • Example 2 With reference to FIG. 1, it was found that the high refractive material layer and the low refractive material layer were separately formed on the substrate in a layer structure.
  • the layer structure is formed by the materials having different refractive indices, more effective reflectance can be obtained, as compared to a monolayer structure.
  • a film was manufactured in the same manners as in Example 1, except using a material B instead of the material A as a low refract ive-thermosett ing material .
  • Example 3 25 parts by weight of the low refract ive-thermosett ing material C and 75 parts by weight of the high refract ive-UV curable material F were uniformly mixed to prepare a compatible mixed solution, resulting in a coating composition.
  • the prepared coating composition was applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No. 5).
  • the film was dried in an oven at 120 ° C for 2 min, and cured by UV radiation at a dose of 200 mJ/cin 2 , followed by heat curing in the oven at 120°C for a day.
  • the final coating layer had a thickness of 1 ⁇ m.
  • Example 4 30 parts by weight of the low refract ive-thermosett ing material A and 70 parts by weight of the high refract ive-UV curable material F were uniformly mixed to prepare a compatible coating composition. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 5 30 parts by weight of the low refract ive-thermosett ing material A and 70 parts by weight of the high refract ive-UV curable material F were uniformly mixed to prepare a compatible coating composition. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 5 30 parts by weight of the low refract ive-thermosett ing material A and 70 parts by weight of the high refract ive-UV curable material F were uniformly mixed to prepare a compatible coating composition. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 5 30 parts by weight of the low refract ive-thermosett ing material A and 70 parts by weight of the high
  • Example 3 25 parts by weight of the low refract ive-thermosett ing material A, 70 parts by weight of the high refract ive-UV curable material F, and 5 parts by weight of trif luoroethylacrylate as a fluorinated compound were uniformly mixed to prepare a compatible coating composition for ant ireflect ion.
  • a coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 7 25 parts by weight of the low refract ive-thermosett ing material D, 70 parts by weight of the high refract ive-UV curable material F, and 5 parts by weight of trif luoroethylacrylate as a f luorinated compound were uniformly mixed to prepare a compatible coating composition for ant iref lection.
  • a coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 10 50 parts by weight of 10% MgF 2 -dispersed liquid, 30 parts by weight of magnesium trif luoroacetate, and 20 parts by weight of methylethylketone
  • MEK metal fluoride-dispersed liquid
  • Example 11 8 parts by weight of the low refract ive-thermosett ing material C, 75 parts by weight of the high refract ive ⁇ UV curable material F, and 17 parts by weight of the metal fluoride-dispersed liquid were uniformly mixed to prepare a compatible coating composition for ant iref lection.
  • a coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 11 8 parts by weight of the low refract ive-thermosett ing material C, 75 parts by weight of the high refract ive ⁇ UV curable material F, and 17 parts by weight of the metal fluoride-dispersed liquid were uniformly mixed to prepare a compatible coating composition for ant iref lection.
  • a coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 11 8 parts by weight of the low refract ive-thermosett ing material C, 75 parts by weight of the high refract ive ⁇ UV curable material F, and 17 parts by
  • a coating solution and a coating film were manufactured in the same manners as in Example 10, except using the material A instead of the material C as a low refract ive-thermosett ing material.
  • Example 12 25 parts by weight of the low refract ive-thermosett ing material D, 70 parts by weight of the high refract ive-UV curable material F, and 5 parts by weight of the metal fluoride-dispersed liquid prepared in Example 10 were uniformly mixed to prepare a compatible coating composition for ant iref lection. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 13 25 parts by weight of the low refract ive-thermosett ing material D, 70 parts by weight of the high refract ive-UV curable material F, and 5 parts by weight of the metal fluoride-dispersed liquid prepared in Example 10 were uniformly mixed to prepare a compatible coating composition for ant iref lection. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 13 25 parts by weight of the low refract ive-thermosett ing material D, 70 parts by weight of the high refract ive-UV curable material F, and 5 parts
  • Example 14 10 parts by weight of NaMgFs having an average particle size of 30-40 nm and 90 parts by weight of isopropyl alcohol (IPA) were uniformly mixed to prepare a metal fluoride-dispersed liquid.
  • a coating solution and a coating f i Im were manufactured in the same manners as in Example 10, except using the metal fluoride-dispersed liquid.
  • Example 14
  • the high refractive-UV curable material E was only used as a material for the formation of a coating layer, and applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No. 5).
  • the film was dried in an oven at 60°C for 2 min, and cured by UV radiation at a dose of 1 J/cm 2 to manufacture a coating film.
  • the coating film had a thickness of approximately 1 ⁇ m.
  • Comparative Example 2 The low refract ive-thermosett ing material A was only used as a material for the formation of a coating layer, and applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No.5).
  • the film was heat-cured in an oven at 120°C for a day to manufacture a coating film.
  • the coating film had a thickness of approximately 1 ⁇ m.
  • the low refract ive-thermosett ing material B was only used as a material for the formation of a coating layer, and applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No.5).
  • the film was heat-cured in an oven at 120"C for a day to manufacture a coating film.
  • the coating film had a thickness of approximately 1 ⁇ m.
  • the high refract ive-UV curable material F was only used as a material for the formation of a coating layer, and applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No.5).
  • the film was dried in an oven at 120"C for 2 min, cured by UV radiation at a dose of 200 mJ/c ⁇ f, and left in the oven at 120 ° C for a day.
  • the coating film had a thickness of approximately 1 ⁇ m.
  • Comparative Example 5 25 parts by weight of the low refract ive-thermosett ing material G, 70 parts by weight of the high refractive-UV curable material H, and 5 parts by weight of trif luoroethyl acrylate as a f luorinated compound were uniformly mixed to prepare a compatible coating composition for ant iref lection. A coating film was manufactured using the composition in the same manner as in Example 3.
  • Example 10 25 parts by weight of the low refract ive-thermosett ing material G, 70 parts by weight of the high refractive-UV curable material H, and 5 parts by weight of the metal fluoride-dispersed liquid prepared in Example 10 were uniformly mixed to prepare a compatible coating composition for ant iref lect ion.
  • a coating film was manufactured using the composition in the same manner as in Example 3.
  • the low and high refractive materials prepared in Preparative Example were used to manufacture cured products, and their refractive index and surface energy were measured, shown in Table 1.
  • the methods for manufacturing the cured products using each material are as follows.
  • the low refract ive-thermosett ing material was applied to a triacetate cellulose film having a thickness of 80 ⁇ m using a wire bar (No. 5), and left in an oven at 120"C for a day.
  • the high refractive-UV curable material was applied in the same manner as the low refractive material, except that it was dried in an oven at 60 ° C for 2 min, and cured by UV radiation at a dose of 200 mJ/crf.
  • the refractive index was measured using a prism coupler (Sairon Technology), and the surface energy was measured using Drop shape analysis system, DSAlOO (KRUSS), and water and diiodomethane (CH2I2) as a standard.
  • Comparative Examples had a thickness of 1 ⁇ m.
  • the abrasion resistance and the optical characteristics including reflectance, transmittance, and haze of the ant ireflection films manufactured in Examples and Comparative Examples were evaluated as follows:
  • the back side of the coating film was treated with black, and then reflectance was measured using a Solid Spec. 3700 spectrophotometer (Shimadzu) to determine the anti-reflection property depending on the minimum reflectance.
  • the transmittance and haze of the coating film were evaluated using HR-IOO (Murakami, Japan).
  • the coating films manufactured in Examples 1 to 14 exhibited good scratch resistance to have excellent abrasion resistance, as well as excellent optical characteristics including reflectance, transmittance, and haze. Meanwhile, the coating films manufactured in Comparative Examples 1 and 4 to 6 exhibited poor optical characteristics including transmittance or haze, as compared to those of Examples. Since the coating films manufactured in Comparative Examples 2 and 3 exhibited poor scratch resistance, an additional hard coating process is required. Therefore, there is a problem in that process efficiency is reduced.
  • the ant i reflect ion film according to the present invention can be manufactured by one coating process, thereby improving process efficiency and reducing manufacturing cost, as well as achieving excellent antiref lection characteristic and abrasion resistance.
  • the present invention has been described in connection with the preferred embodiments, although specific terms are employed herein, the scope of the present invention is not limited to the specific embodiments but should be construed on the basis of the appended claims.

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Abstract

L'invention concerne une composition de revêtement antireflet contenant un matériau à faible réfraction présentant un indice de réfraction compris entre 1,2 et 1,45 et une résine à réfraction élevée présentant un indice de réfraction compris entre 1,46 et 2, la différence d'énergie de surface entre les deux matériaux étant de 5 mN/m ou supérieure. L'invention concerne également un film antireflet fabriqué au moyen de cette composition de revêtement. L'invention concerne encore un procédé de fabrication dudit film. Le film selon l'invention présente une excellente résistance à l'abrasion et d'excellentes caractéristiques antireflets et il peut être fabriqué au moyen d'une composition unique par la mise en œuvre d'un processus de revêtement unique, ce qui permet de réduire le coût de fabrication.
EP08849489A 2007-11-13 2008-11-13 Composition de revetement antireflet, film antireflet et procede de preparation associe Withdrawn EP2209855A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR20070115329 2007-11-13
KR20070115348 2007-11-13
KR20070115967 2007-11-14
KR1020080035891A KR20090049519A (ko) 2007-11-13 2008-04-18 반사방지 코팅 조성물 및 이것을 이용하여 제조된 반사방지필름
PCT/KR2008/006703 WO2009064128A2 (fr) 2007-11-13 2008-11-13 Composition de revetement antireflet, film antireflet et procede de preparation associe

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EP2209855A2 true EP2209855A2 (fr) 2010-07-28
EP2209855A4 EP2209855A4 (fr) 2011-04-06

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KR102040301B1 (ko) * 2017-06-08 2019-11-04 삼성에스디아이 주식회사 반사방지 필름, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치
CN107652718B (zh) * 2017-09-27 2020-03-31 广东星星光电科技有限公司 一种减反射镀膜液及其制备方法
CN109502987B (zh) * 2018-12-17 2021-09-28 常州大学 一种基于空心氧化硅制备高硬度减反膜的方法
KR20220059812A (ko) * 2020-11-03 2022-05-10 주식회사 엘지화학 광학 적층체
CN117222710A (zh) * 2021-05-26 2023-12-12 斯泰拉化工公司 氟化物颗粒的分散液、光学膜形成用组合物及光学膜
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KR20090049558A (ko) 2009-05-18
WO2009064128A2 (fr) 2009-05-22
EP2209855A4 (fr) 2011-04-06
JP2011503658A (ja) 2011-01-27
CN101855303B (zh) 2012-09-05
WO2009064128A3 (fr) 2009-08-13
KR101009821B1 (ko) 2011-01-19
CN101855303A (zh) 2010-10-06

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