WO2006088205A1 - 防眩性光学積層体 - Google Patents
防眩性光学積層体 Download PDFInfo
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- WO2006088205A1 WO2006088205A1 PCT/JP2006/303061 JP2006303061W WO2006088205A1 WO 2006088205 A1 WO2006088205 A1 WO 2006088205A1 JP 2006303061 W JP2006303061 W JP 2006303061W WO 2006088205 A1 WO2006088205 A1 WO 2006088205A1
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Classifications
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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
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133502—Antiglare, refractive index matching layers
Definitions
- the present invention relates to an antiglare optical laminate used for displays such as CRTs and liquid crystal panels.
- Reflection or image of external light is applied to an image display device such as a cathode ray tube display (CRT), plasma display (PDP), electoric luminescence display (ELD), or liquid crystal display (LCD).
- an image display device such as a cathode ray tube display (CRT), plasma display (PDP), electoric luminescence display (ELD), or liquid crystal display (LCD).
- Power S is required to prevent degradation of contrast and visibility due to reflection of images.
- the antireflection laminate is provided on the outermost surface of the image display device for the purpose of reducing the image reflection or reflectance by using the principle of light scattering or optical interference.
- an antiglare laminate is used as one of the antireflection laminates in order to adjust the optical characteristics and realize excellent image display. It is known to do.
- the antiglare laminate is used for the purpose of preventing a decrease in visibility due to reflection of external light or image reflection in the image display device.
- the antiglare laminate is generally realized by forming an antiglare layer having a concavo-convex shape on a base material.
- an image display device for example, a liquid crystal display
- the optical characteristics are adjusted.
- an antiglare laminate as one of the antireflection laminates.
- the antiglare laminate is used for the purpose of preventing a decrease in visibility due to reflection of external light or image reflection in the image display device.
- Antiglare laminate cures composition with various particles added It is adjusted as a concavo-convex shape or a concavo-convex shape by embossing treatment (Patent Publication 2004-341070).
- the anti-glare laminate employing such a configuration is not suitable for high-definition ones that are broad and large and have a concave-convex shape that curves.
- miniaturization of the uneven shape formed with higher definition of the panel resolution can meet the demand for higher definition of the panel resolution, but image display against reflected light of external light on the display surface. Fingers were often made such as the surface appearing white (whitening) and the contrast decreased.
- anti-glare properties are obtained by adding surface scattering particles having a refractive index difference from that of a resin that forms an anti-glare layer, and the surface irregularities are made dense for the purpose of enhancing the sharpness.
- Techniques such as imparting an internal scattering effect to the laminate have been used. However, although all of these methods have successfully resolved “glare”, the overall image visibility may be reduced.
- the technique for improving the glare of the high-definition panel is said to be the main factor for reducing the contrast such as whitening of the surface or white turbidity due to the internal scattering effect.
- “Contrast improvement” has a trade-off relationship, and it was difficult to satisfy both. For example, black reproducibility including blackness (black color like black) on screen display, contrast, etc. may be inferior. In other words, black gradation expression in a bright room, especially in low gradation, the sensitivity that makes it difficult to recognize the difference in black gradation may be low. Specifically, in the color recognition of black and gray, there was a case where only color blur and black with the same color tone could be recognized. . In particular, it can be said that the visibility of such an antiglare laminate having a glare-preventing performance was significantly reduced.
- optical laminate that can effectively prevent glare on the image surface and can achieve black reproducibility, particularly jet blackness.
- optical laminates that can be used not only for LCDs, but also for other applications such as cathode ray tube display (CRT), plasma display (PDP), fluorescent display tube, and field emission display.
- the present inventors have improved the antiglare property and contrast improvement property, particularly the black reproducibility while imparting antiglare properties, so-called jet black feeling (black-like mattness). It was found that an optical laminate capable of achieving (black) was obtained.
- the present invention is based on strong knowledge.
- an object of the present invention is to provide an optical laminate having an antiglare function and excellent antiglare property and capable of simultaneously realizing highly visible image display.
- the optical laminate according to the present invention comprises a light-transmitting substrate and an antiglare layer on the light-transmitting substrate,
- the outermost surface of the antiglare layer has an uneven shape
- the internal haze value of the optical laminate is 0% or more and 50% or less
- the optical laminate has a surface haze value of 0.5% to 4.5%.
- the optical layered body of the present invention excellent anti-glare properties and black reproducibility with jet blackness can be realized, and high sharpness, excellent anti-glare properties, contrast, and characters are achieved. It is possible to provide an optical laminate that can realize blur prevention and can be used in various displays. In particular, according to the optical laminate according to the present invention, It is possible to provide an optical laminate in which the black gradation expression that has been difficult to realize with the conventional antiglare laminate is remarkably improved. Specifically, when displaying a moving image, the image represents a gradation similar to that of a conventional display in which only a clear hard coat layer without an uneven shape and a laminate having an antireflection layer thereon are arranged.
- an optical layered body that achieves an image in which the outline of a character is sharp and an image in which surface glare is prevented can be obtained.
- an arbitrary layer such as a surface adjustment layer or a low refractive index layer is provided on the antiglare layer
- the surface of the concavo-convex shape that forms the antiglare layer is spotted.
- various functions such as antistatic, refractive index adjustment, and contamination prevention to the optical laminate.
- the surface irregularity shape of the surface adjustment layer or arbitrary layer matches the optical characteristic value of the surface irregularity shape of the antiglare layer in the present invention. Is. That is, in the optical layered body of the present invention, the concavo-convex shape of the outermost surface matches the optical characteristic value of the concavo-convex shape of the surface of the antiglare layer defined in the present invention.
- FIG. 1 is a schematic sectional view of an optical laminate according to the present invention.
- the average roughness is measured by measuring the surface shape as a two-dimensional or three-dimensional profile. Actually, the measurement is performed using a scanning probe microscope or an atomic force microscope. Since it is generally difficult to objectively compare the curves themselves, various roughness indices are calculated from the profile curve data. Therefore, in the present invention, the 10-point average roughness (Rz) is calculated using the above measurement results. Therefore, the 10-point average roughness (Rz) is the average of the deviation values calculated from the average value force, the average of the five largest deviation values from the largest, and the absolute value of the five smallest deviation values from the smallest. Expressed as the sum of the mean values.
- Sm (um) is the average spacing of the irregularities and ⁇ a is the average inclination angle
- the antiglare layer constituting the optical laminate according to the present invention has an uneven shape.
- Sm m) represents the average spacing of the irregularities of this antiglare layer, and ⁇ a (degrees) represents the average inclination angle of the irregularities.
- reference length is the same as measurement condition 1 below.
- the measurement may be performed under the following measurement conditions using the surface roughness measuring instrument. This measurement is preferable in the present invention.
- the ratio ⁇ between the average roughness Rz and the average spacing Sm is defined as ⁇ Rz / Sm, and the ratio of the average roughness Rz to the average spacing Sm It can be used as an indicator of slope.
- the ratio ⁇ between the average roughness Rz and the average spacing Sm of the irregularities is defined as ⁇ Rz / Sm, and by taking the ratio of the average roughness Rz and the average spacing Sm of the irregularities, the slope of the irregularities It can be used as an index indicating the tilt angle.
- the reflection Y value is measured with a Shimadzu MPC3100 spectrophotometer, with 5 ° specular reflectance measured in the wavelength range from 380 to 780 nm, and then converted to brightness that humans can perceive with the eyes (built-in MPC3100) It is a value indicating the luminous reflectance calculated. In addition, 5. Specular reflectance When measuring, in order to prevent back reflection of the film, which is an optical laminate, measure with black tape (manufactured by Teraoka) on the opposite side of the measurement film surface.
- the haze value can be measured according to JIS K-7136.
- the instrument used for the measurement is a reflection / transmittance meter HR_100 (Murakami Color Research Laboratory).
- the total light transmittance of the antiglare laminate can be measured with the same measuring device as the haze value according to JIS K-7361.
- the haze and total light transmittance are measured with the coated surface facing the light source.
- the 60-degree dalos can be measured using a precision gloss meter (GM-26D, manufactured by Murakami Color Research Laboratory) according to JIS Z8741.
- the measurement is performed with the back of the sample and the black lid of the measuring instrument attached with double-sided tape (manufactured by Teraoka Seisakusho) in order to remove the influence of the back reflection of the sample.
- Transmission sharpness was measured using four types of optical combs (0.125 mm, 0.5 mm, lmm, and JIS K7105) using a image clarity measuring instrument (Suga Test Instruments Co., Ltd., product number: “ICM_ 1DP”). And the total of the values measured in 2mm).
- the “surface haze” used in the present invention is determined as follows.
- a resin such as pentaerythritol tritalylate (including resin components such as monomers or oligomers) is diluted with toluene on the unevenness of the antiglare layer to give a solid content of 60%. Apply to ⁇ ⁇ . As a result, the surface unevenness of the antiglare layer is crushed and a flat layer is formed.
- the antiglare film is preliminarily saponified (2 mol / After immersing in a solution of l in NaOH (or KOH) at 55 ° C for 3 minutes, wash it with water, completely remove water droplets with Kimwipe, and dry it in an oven at 50 ° C for 1 minute).
- This film with a flat surface has only a haze due to surface irregularities and an internal haze. This haze can be obtained as internal haze. Then, a value obtained by subtracting the internal haze from the haze (overall haze) of the original film is obtained as the haze (surface haze) caused only by the surface irregularities.
- the layer thickness of the antiglare layer is from the display side interface of the substrate to the outermost surface of the antiglare uneven surface in contact with air. Say. From the substrate interface to the outermost surface, there may be a case where the antiglare layer is a single layer, or a surface adjustment layer, other optical functional layers, etc. are laminated to form a multilayer.
- a confocal laser microscope (LeicaTCS-NT: manufactured by Leica Co., Ltd .: magnification “100 to 300 times”)
- the cross section of the optical laminate was observed through transmission, the presence or absence of an interface was judged, and the following evaluation criteria were used.
- a wet objective lens is used for the confocal laser microscope, and about 2 ml of an oil having a refractive index of 1.518 is placed on the optical laminate.
- the use of oil was used to eliminate the air layer between the objective lens and the optical stack.
- the optical laminate according to the present invention has both antiglare properties and excellent black reproducibility and contrast. Specifically, by forming a surface adjustment layer on the anti-glare optical laminate (AG), which is considered as one of the methods for forming an optical laminate, the uneven shape of the antiglare layer becomes smooth and optimal. By imparting an appropriate surface roughness parameter, it is possible to produce an antiglare laminate having a very jet black feeling while providing sufficient antiglare properties.
- AG anti-glare optical laminate
- the average inclination angle of the uneven portions of the antiglare layer is ⁇ a
- the average roughness of the uneven portions is Rz
- the average interval Sm of the uneven portions is the ratio ⁇ 3
- RzZSm the following formulas (I) and (II):
- the internal haze value of the optical laminate according to the present invention is 0% or more and 50% or less (may be 55% or less), preferably the lower limit is 0% or more, more preferably 0.1% or more, and the upper limit is It is 45% or less, more preferably 35% or less.
- the surface haze value of the optical laminate according to the present invention is 0.5% or more 4.5. / 0 or less, preferably the lower limit is 1.0% or more, more preferably 1.5. / Is 0 or more, the upper limit is 4. not more than 0 ° / o, more preferably 3. 8% or less.
- FIG. 1 shows a cross-sectional view of an optical laminate according to the present invention.
- An antiglare layer 4 is formed on the upper surface of the light-transmitting substrate 2, and the antiglare layer 4 includes a resin and fine particles.
- the surface adjustment layer 6 is formed on the antiglare layer 4.
- an optical laminate in which a low refractive index layer 8 having a refractive index lower than the refractive index of the antiglare layer 4 or the surface adjustment layer 6 is formed on the surface of the surface adjustment layer 6. I like the body.
- the antiglare layer is formed on the light transmissive substrate.
- a previously prepared antiglare layer may be formed on the surface of the optical laminate.
- 1) a method for forming an antiglare layer having an irregular shape by using an antiglare composition obtained by adding fine particles to a resin 2) fine particles
- a method for forming an antiglare layer having a concavo-convex shape using an antiglare composition containing only a resin or the like without addition 3) a method for forming an antiglare layer using a treatment for imparting a concavo-convex shape Etc.
- the antiglare layer when the antiglare layer is prepared in advance, it may be an antiglare layer separately prepared by the methods 1) to 3) above.
- the thickness of the antiglare layer is 0. or more (12 x m or less is preferred), preferably the lower limit is 1 ⁇ m or more and the upper limit is 7 ⁇ m or less.
- the fine particles may be spherical, for example, spherical or elliptical, and may be preferably spherical.
- the average particle diameter R ( ⁇ ) of the fine particles is lO / im or more and 20 zm or less, preferably the upper limit is 15. O xm and the lower limit is 3.5 ⁇ m. Is preferred.
- the average particle size distribution of the fine particles is R ⁇ 1.0 xm, preferably R ⁇ 0.5 xm, more preferably R Those within the range of ⁇ 0.3 ⁇ m are preferred.
- R (xm) of the fine particles may be lower than the lower limit. 3.
- the agglomerated fine particles may be the same fine particles or may be composed of a plurality of fine particles having different average particle diameters.
- the aggregated fine particles preferably include those comprising second fine particles having a different average particle diameter from the first fine particles. Further, according to a more preferable embodiment of the present invention, it is preferable that the second fine particle itself or the aggregated portion itself does not exhibit antiglare property in the antiglare layer.
- r is 0.25R or more
- the coating liquid is easily dispersed and the particles are not aggregated.
- a uniform concavo-convex shape can be formed without being affected by the wind during floating in the drying process after coating.
- r is 0.85R or less It is preferable because the roles of the fine particles and the first particles can be clearly distinguished.
- the total weight ratio per unit area of the resin, the fine particles, and the second fine particles is M, and the total weight per unit area of the fine particles is M. Per unit area
- the fine particles include inorganic and organic particles, but those formed of an organic material are preferable.
- the fine particles exhibit anti-glare properties and are preferably transparent.
- Specific examples of the fine particles include plastic beads, more preferably those having transparency.
- plastic beads include styrene beads (refractive index 1 ⁇ 59), melamine beads (refractive index 1 ⁇ 57), talyl beads (refractive index 1.49), acrylic styrene beads (refractive index 1.54), polycarbonate. Examples thereof include net beads and polyethylene beads.
- plastic beads having a hydrophobic group on the surface thereof are preferably used, and for example, styrene beads are preferably mentioned.
- the antiglare layer according to the present invention can be formed of a (curable) resin.
- resin is a concept including resin components such as monomers and oligomers.
- curable resins that are transparent are preferred: ionizing radiation curable resins that are cured by ultraviolet rays or electron beams, mixtures of ionizing radiation curable resins and solvent-drying resins, Or, there are three types of thermosetting resins, preferably ionizing radiation curable resins.
- the ionizing radiation curable resin include those having an acrylate functional group, For example, relatively low molecular weight polyester resins, polyether resins, acrylic resins, epoxy resins, urethane resins, alkyd resins, spiroacetal resins, polybutadiene resins, polythiol-polyene resins, polyfunctional compounds (meth) Examples include oligomers or prepolymers such as arylates, and reactive diluents. Specific examples thereof include ethyl (meth) acrylate, ethyl hexyl (meth) acrylate, styrene, methyl styrene, N_bululpyrrolidone, etc.
- Monofunctional monomers as well as polyfunctional monomers such as polymethylolpropane tri (meth) acrylate, hexanediol (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol Ritorutori (meth) Atari rate, hexa to dipentaerythritol (meth) Atarire over preparative, 1, hexanediol di (meth) Atari rate to 6, neopentyl glycol di (meth) Atari rate, and the like.
- the ionizing radiation curable resin is used as an ultraviolet curable resin
- a photopolymerization initiator include acetophenones, benzophenones, Michler benzoyl benzoate, a amyl oxime ester, tetramethylchuram monosulfide, and thixanthones.
- Specific examples of the photosensitizers preferably used in combination include n-butylamine, triethylamine, poly-n-butylphosphine, and the like.
- the solvent-drying resin used by being mixed with the ionizing radiation curable resin mainly includes a thermoplastic resin.
- the thermoplastic resin those generally exemplified are used. By adding a solvent-drying type resin, coating film defects on the coated surface can be effectively prevented.
- the material of the light-transmitting substrate is a cellulose resin such as triacetyl cellulose “TAC”
- preferred specific examples of the thermoplastic resin include cellulose resins such as nitrocellulose, Examples include cetyl cellulose, cellulose acetate propionate, and ethyl hydroxyethyl cellulose.
- thermoplastic resins include, for example, styrene resins, (meth) acrylic resins, vinyl acetate resins, vinyl ether resins, halogen-containing resins, alicyclic olefin resins, polycarbonate resins, and polyester resins. Resin, polyamide resin, cellulose derivative, silicone resin, rubber or elastomer. As the resin, a resin that is amorphous and is soluble in an organic solvent (especially a common solvent capable of dissolving a plurality of polymers and curable compounds) is usually used.
- resins with high moldability or film-forming properties, transparency and high weather resistance such as styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters) Etc) is preferred.
- thermosetting resin examples include phenol resin, urea resin, diallyl phthalate resin, melanin resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine. -Urea co-condensation resin, key resin, polysiloxane resin and the like.
- a curing agent such as a cross-linking agent and a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier and the like as necessary.
- a leveling agent such as fluorine or silicone
- the composition for the antiglare layer to which the leveling agent is added can effectively prevent the inhibition of curing due to oxygen on the surface of the coating film during application or drying, and can impart an effect of scratch resistance.
- the leveling agent is preferably used for a film-like light-transmitting substrate (for example, triacetyl cellulose) that requires heat resistance.
- the antiglare layer comprises fine particles or agglomerated fine particles (preferably first fine particles and second fine particles) and a resin, and an appropriate solvent, for example, an alcoholic compound such as isopropyl alcohol, methanol, ethanol, or the like; MEK), methyl isobutyl ketone (MIBK :), ketones such as cyclohexanone; esters such as methyl acetate, ethyl acetate, butyl acetate; aromatic hydrocarbons such as toluene, xylene; aromatic hydrocarbons such as toluene, xylene; Or you may form by apply
- an alcoholic compound such as isopropyl alcohol, methanol, ethanol, or the like
- MEK methyl isobutyl ketone
- ketones such as cyclohexanone
- esters such as methyl acetate,
- Examples of the method for applying the antiglare layer composition to the light-transmitting substrate include application methods such as a roll coating method, a Miyaba coating method, and a gravure coating method. After application of the antiglare layer composition Next, drying and UV curing are performed.
- Specific examples of the ultraviolet light source include ultra-high pressure mercury lamp, high pressure mercury lamp, low pressure mercury lamp, carbon arc lamp, black light fluorescent lamp, and metal halide lamp light source.
- As the wavelength of ultraviolet light a wavelength range of 190 to 380 nm can be used.
- the electron beam source include various types of electron beam accelerators such as cockcroft ⁇ norret type, bande graft type, resonant transformer type, insulated core transformer type, linear type, dynamitron type, high frequency type, etc. .
- the resin is cured, fine particles in the resin are fixed, and a desired uneven shape is formed on the outermost surface of the antiglare layer.
- the antiglare layer is formed by applying a composition for an antiglare layer obtained by mixing at least one polymer and at least one curable resin precursor using an appropriate solvent onto a light-transmitting substrate. S can.
- the polymer is a plurality of polymers that can be phase-separated by spinodal decomposition, for example, a cell mouth derivative, a styrene resin, a (meth) acrylic resin, an alicyclic olefin resin, a polycarbonate resin, and a polyester resin. Etc., or combinations thereof.
- the curable resin precursor may have compatibility with at least one polymer among a plurality of polymers.
- at least one polymer force may have a functional group involved in the curing reaction of the curable resin precursor, for example, a polymerizable group such as a (meth) ataryloyl group.
- a thermoplastic resin is usually used as the polymer component.
- thermoplastic resin examples include styrene resin, (meth) acrylic resin, organic acid ester resin, vinyl ether resin, halogen-containing resin, and olefin resin (alicyclic olefin resin).
- olefin resin alicyclic olefin resin.
- polycarbonate resin polyester resin, polyamide resin, thermoplastic polyurethane resin, polysulfone resin (for example, polyethersulfone, polysulfone), polyphenylene ether resin (for example, 2,6-xy-lenenole) Coalesce), cenorelose derivatives (eg, cenololose esterols, cellulose carbamates, cellulose ethers), silicone resins (eg, polydimethylsiloxane, polymethylphenylsiloxane), rubbers or elastomers (eg, polybutadiene, Polyisoprene Zhen rubber, styrene one butadiene copolymer, Atarironitori
- styrene resin examples include a styrene monomer alone or a copolymer (for example, polystyrene, styrene monomethyl styrene copolymer, styrene monobutylene copolymer), styrene monomer And copolymers with other polymerizable monomers [for example, (meth) acrylic monomer, maleic anhydride, maleimide monomer, gens] and the like.
- styrene copolymer examples include styrene-acrylonitrile copolymer (AS resin), copolymer of styrene and (meth) acrylic monomer [for example, styrene-methyl methacrylate copolymer, Styrene-methyl methacrylate- (meth) acrylic acid ester copolymer, styrene-methyl methacrylate- (meth) acrylic acid copolymer, etc.], styrene-maleic anhydride copolymer, and the like.
- AS resin styrene-acrylonitrile copolymer
- acrylic monomer for example, styrene-methyl methacrylate copolymer, Styrene-methyl methacrylate- (meth) acrylic acid ester copolymer, styrene-methyl methacrylate- (meth) acrylic acid copolymer, etc.
- Preferred styrenic resins include polystyrene, copolymers of styrene and (meth) acrylic monomers [for example, copolymers of styrene and methyl methacrylate as main components such as styrene-methyl methacrylate copolymer. Coalesced], AS resin, styrene-butadiene copolymer and the like.
- the (meth) acrylic resin a (meth) acrylic monomer alone or a copolymer, a copolymer of a (meth) acrylic monomer and a copolymerizable monomer, or the like is used. it can.
- (meth) acrylic monomers include (meth) acrylic acid; methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, t-butyl (meth) acrylate, ( (Meth) acrylic acid C alkyl such as (meth) acrylic acid isobutyl, (meth) acrylic acid hexyl, (meth) acrylic acid octyl, (meth) acrylic acid 2-ethylhexyl, etc .; (meth) acrylic acid phenyl Etc. (meta)
- Specific examples of the copolymerizable monomer include the styrene monomer, bull ester monomer, maleic anhydride, maleic acid, fumaric acid and the like. These monomers may be used alone or in combination. Can be used in combination with more than one species.
- the (meth) acrylic resin include poly (meth) atari such as polymethyl methacrylate. Luric acid ester, methyl methacrylate- (meth) acrylic acid copolymer, methyl methacrylate- (meth) acrylic acid ester copolymer, methyl methacrylate-acrylic acid ester (meth) acrylic acid copolymer, (meth) acrylic acid Examples include ester-styrene copolymers (MS resin, etc.). Specific examples of preferred (meth) acrylic resins include poly (meth) acrylic acid C alkyl such as poly (meth) acrylic acid methyl, particularly methyl methacrylate as the main component (50
- organic acid vinyl ester resins include vinyl ester monomers alone or copolymers (polyacetate butyl, polypropionate butyl, etc.), butyl ester monomers and copolymerizable monomers. And copolymers thereof with ethylene (vinyl vinyl acetate copolymer, vinyl acetate-vinyl chloride copolymer, vinyl acetate- (meth) acrylate copolymer, etc.) or derivatives thereof.
- the derivatives of the bull ester resin include polyvinyl alcohol, ethylene vinyl alcohol copolymer, polyvinyl acetal resin, and the like.
- butyl ether resin examples include vinyl C ethers such as vinyl methyl ether, vinyl ether ether, bi-propyl ether, bi-butyl ether and the like.
- halogen-containing resins include polyvinyl chloride, polyvinylidene fluoride, chlorinated butyl acetate, butyl acetate copolymer, butyl (meth) acrylate copolymer, vinylidene chloride (meth) acrylate copolymer. Examples include coalescence.
- olefin-based resin examples include, for example, olefin homopolymers such as polyethylene and polypropylene, ethylene-butyl acetate copolymer, ethylene-butyl alcohol copolymer, and ethylene- (meth) acrylic.
- the copolymer examples include an acid copolymer and an ethylene- (meth) acrylic acid ester copolymer.
- the alicyclic olefin-based resin include cyclic olefins (for example, norbornene, dicyclopentagen) alone or a copolymer (for example, alicyclic hydrocarbon groups such as sterically rigid tricyclodecane).
- a copolymer of the cyclic olefin and a copolymerizable monomer for example, ethylene
- a copolymerizable monomer for example, ethylene
- examples thereof include a runnene copolymer and a propylene norbornene copolymer.
- Specific examples of the alicyclic olefin-based resin are available under the trade name “ARTON” and the trade name “ZEONEX”.
- polycarbonate-based resin examples include aromatic polycarbonates based on bisphenols (such as bisphenol A) and aliphatic polycarbonates such as diethylene glycol bisallyl carbonate.
- polyester resins include aromatic polyesters using aromatic dicarboxylic acids such as terephthalic acid, such as poly C alkylene terephthalates such as polyethylene terephthalate and polybutylene terephthalate, and poly C alkylene naphthalates.
- aromatic dicarboxylic acids such as terephthalic acid, such as poly C alkylene terephthalates such as polyethylene terephthalate and polybutylene terephthalate, and poly C alkylene naphthalates.
- copolyesters examples include poly C
- polyester-based resin examples include polyarylate-based resin, aliphatic polyester using an aliphatic dicarboxylic acid such as adipic acid, and a single or copolymer of rataton such as ⁇ -force prolatatone.
- Preferred polyester resins are usually non-crystalline copolyesters (eg, C alkylene acrylate copolyesters).
- polyamide resin examples include aliphatic polyamides such as nylon 46, nylon 6, nylon 66, nylon 6 10, nylon 612, nylon 11 and nylon 12, dicarboxylic acids (for example, terephthalic acid and isophthalic acid). , Adipic acid, etc.) and polyamides (for example, hexamethylene diamine, metaxylylene diamine).
- Polyamide A specific example of the resin may be a ratatam homopolymer or copolymer such as ⁇ - one-prolactam, and may be a copolyamide as well as a homopolyamide.
- cellulose esters include, for example, aliphatic organic acid esters, for example, cellulose acetate such as cellulose diacetate and cellulose triacetate; senorelose propionate, senorelose butyrate, C organic acid esters such as cerealose, cetate propionate, cellulose acetate butyrate, etc.
- Aromatic organic acid esters C aromatic carboxylic acid esters such as cellulose phthalate and cellulose benzoate
- inorganic acid esters such as cellulose phosphate
- mixed acid ester such as acetic acid 'cellulose nitrate ester.
- cellulose derivative include cellulose carbamates (for example, cellulose vinyl carbamate and the like, cellulose ethers such as cyano etinoresenorelose; hydroxyethinoresenorelose, hydroxypropinoresenorelose). Hydroxy C canolequinolesenorelose, etc .; methinoresenorelose, ethinoresenorelose
- C alkyl cellulose such as carboxymethyl cellulose or a salt thereof
- Examples include norerose and acetyl acetylcellulose.
- thermoplastic resins include, for example, styrene resins, (meth) acrylic resins, butyl acetate resins, vinyl ether resins, halogen-containing resins, alicyclic olefin resins, and polycarbonate resins. , Polyester resins, polyamide resins, cellulose derivatives, silicone resins, rubbers or elastomers.
- a resin that is non-crystalline and is soluble in an organic solvent especially a common solvent capable of dissolving a plurality of polymers and curable compounds is usually used.
- resins with high moldability or film-forming property, transparency and high weather resistance such as styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters, etc.) Etc. are preferred.
- a polymer having a functional group involved in the curing reaction (or a functional group capable of reacting with the curable compound) can also be used.
- This polymer may have a functional group in the main chain or in the side chain.
- the functional group may be introduced into the main chain by copolymerization or cocondensation, but is usually introduced into the side chain.
- Specific examples of such functional groups include condensable groups and reactive groups (for example, hydroxyl groups, acid anhydride groups, carboxyl groups, amino groups or imino groups, epoxy groups, glycidyl groups, isocyanate groups), polymerizable groups (for example, biels, propellants).
- C Alkeni such as nyl, isopropenyl group, butenyl, allyl, etc.
- Examples of a method for introducing a polymerizable group into a side chain include a thermoplastic resin having a functional group such as a reactive group or a condensable group, and a polymerizable compound having a reactive group with the functional group. The method of reacting can be used.
- thermoplastic resin having a functional group examples include a thermoplastic resin having a carboxyl group or an acid anhydride group thereof (for example, (meth) acrylic resin, polyester resin, polyamide resin), and a hydroxyl group.
- Thermoplastic resins for example, (meth) acrylic resins, polyurethane resins, cellulose derivatives, polyamide resins), thermoplastic resins having amino groups (for example, polyamide resins), thermoplastic resins having epoxy groups (For example, (meth) acrylic resin or polyester resin having epoxy group) can be exemplified.
- a resin in which the functional group is copolymerized or graft polymerized into a thermoplastic resin such as a styrene-based resin, a olefinic resin, or an alicyclic olefinic resin may be used.
- thermoplastic resin having a carboxyl group or an acid anhydride group thereof a polymerizable compound having an epoxy group, a hydroxyl group, an amino group, an isocyanate group, or the like is used.
- examples thereof include a polymerizable compound having a carboxyl group or an acid anhydride group or an isocyanate group thereof.
- thermoplastic resin having an amino group examples thereof include a polymerizable compound having a carboxyl group or its anhydride group, an epoxy group, an isocyanate group or the like.
- thermoplastic resin having an epoxy group a carboxylate group or a polymerizable compound having an acid anhydride group or an amino group thereof can be used.
- examples of the polymerizable compound having an epoxy group include epoxycyclo C alkenyl (meth) such as epoxycyclohexenyl (meth) acrylate.
- Examples include attalylate, glycidyl (meth) atalylate, allylglycidyl ether, and the like.
- Examples of the compound having a hydroxyl group include hydroxy c alkyl (meth) acrylates such as hydroxypropyl (meth) acrylate and ethylene glycol mono (meth) acrylate.
- Examples include c-alkylene glycol (meth) acrylate and the like. Has amino group
- polymerizable compound to be used examples include amino amino acids such as aminoethyl (meth) acrylate.
- aminostyrenes such as diaminostyrene.
- polymerizable compound having an isocyanate group include (poly) urethane (meth) acrylate and burisocyanate.
- polymerizable compound having a carboxyl group or an acid anhydride group thereof include unsaturated carboxylic acids such as (meth) acrylic acid and maleic anhydride, or anhydrides thereof.
- thermoplastic resin having a carboxyl group or an acid anhydride group thereof and an epoxy group-containing compound, particularly a (meth) acrylic resin ((meth) acrylic acid mono (meth) acrylate)
- an epoxy group-containing (meth) acrylate epoxycycloalkenyl (meth) acrylate or glycidyl (meth) acrylate
- a polymer in which a polymerizable unsaturated group is introduced into a part of a carboxyl group of a (meth) acrylic resin for example, a force of a (meth) acrylic acid (meth) acrylic acid ester copolymer A (meth) acrylic polymer (Cyclomer P, Daicel) in which a photopolymerizable unsaturated group was introduced into the side chain by reacting an epoxy group of 3, 4-epoxycyclohexenoremethinorea talylate with some Chemical Industry Co., Ltd.) can be used.
- the introduction amount of the functional group (particularly polymerizable group) involved in the curing reaction to the thermoplastic resin is from 0.001 to 10 monolayers, preferably 0.01, with respect to 1 kg of the heat-resistant ten-lived effect. It is about 5 monolayers, more preferably about 0.02 to 3 moles.
- the polymer may be composed of a plurality of polymers. Multiple polymers may be phase-separated by liquid phase spinodal decomposition. The plurality of polymers may be incompatible with each other.
- the combination of the first resin and the second resin is not particularly limited, but multiple polymers that are incompatible with each other near the processing temperature, for example, two polymers that are incompatible with each other Can be used in appropriate combinations.
- the first tree When the fat is a styrene resin (polystyrene, styrene-acrylonitrile copolymer, etc.), the second resin is a cellulose derivative (eg, cellulose esters such as cellulose acetate propionate), a (meth) acrylic resin. (Polymethyl methacrylate, etc.), alicyclic olefin resins (polymers containing norbornene as a monomer), polycarbonate resins, polyester resins (poly C alkylene acrylate copolyesters, etc.)
- a styrene resin polystyrene, styrene-acrylonitrile copolymer, etc.
- the second resin is a cellulose derivative (eg, cellulose esters such as cellulose acetate propionate), a (meth) acrylic resin. (Polymethyl methacrylate, etc.), alicyclic olefin resins (polymers containing norborn
- the second polymer is a styrene resin (polystyrene, styrene monoacrylonitrile copolymer, etc.), (Meth) aryl resins, alicyclic olefin resins (polymers containing norbornene as a monomer, etc.), polycarbonate resins, polyester resins (the aforementioned poly C alkylene acrylate copolymers)
- esters etc. In a combination of a plurality of resins, at least cellulose esteroles can be used.
- cellulose alcohol such as cenololose diacetate, cenololose triacetate, cenololose acetate propionate, and cellulose acetate butyrate.
- phase separation structure generated by spinodal decomposition is finally cured by actinic rays (ultraviolet rays, electron beams, etc.) or heat to form a cured resin. Therefore, scratch resistance can be imparted to the antiglare layer, and durability can be improved.
- At least one of a plurality of polymers for example, one of the incompatible polymers (combination of the first resin and the second resin)
- both polymers are polymers having functional groups in the side chain capable of reacting with the curable resin precursor.
- the ratio (weight ratio) of the first polymer to the second polymer is, for example, 1/99 to 99/1, preferably 5/95 to 95Z5 for the first polymer / second polymer, More preferably, it can be selected from the range of about 10/90 to 90/10, and is usually about 20/80 to 80Z20, particularly about 30/70 to 70/30.
- thermoplastic resin and other polymers may be included.
- the glass transition temperature of the polymer is, for example, one hundred. C-250. C, preferably _50. C ⁇ 23 It can be selected from the range of 0 ° C., more preferably about 0 to 200 ° C. (for example, about 50 to about 180 ° C.). From the viewpoint of surface hardness, it is advantageous that the glass transition temperature is 50 ° C or higher (for example, about 70-200 ° C), preferably 100 ° C or higher (for example, about 100 to 170 ° C). is there .
- the weight average molecular weight of the polymer can be selected, for example, from 1,000,000 or less, preferably from about 1,000 to 500,000.
- the curable resin precursor is a compound having a functional group that reacts with heat or active energy rays (such as ultraviolet rays or electron beams), and is cured or bridged with heat or active energy rays or the like (particularly cured or cured).
- heat or active energy rays such as ultraviolet rays or electron beams
- Various curable compounds capable of forming a crosslinked resin can be used.
- the resin precursor include a thermosetting compound or a resin [low molecular weight compound having an epoxy group, a polymerizable group, an isocyanate group, an alkoxysilyl group, a silanol group, etc. (for example, an epoxy resin, an unsaturated resin).
- the photocurable compound may be an EB (electron beam) curable compound or the like.
- a photocurable compound such as a photocurable monomer, oligomer, or photocurable resin that may have a low molecular weight may be simply referred to as “photocurable resin”.
- the photocurable compound includes, for example, a monomer, an oligomer (or a resin, particularly a low molecular weight resin), and examples of the monomer include a monofunctional monomer [(meth) acrylic acid.
- (Meth) acrylic monomers such as esters, vinyl monomers such as bull pyrrolidone, and (meth) atalyses having bridged cyclic hydrocarbon groups such as isobornyl (meth) acrylate and adamantyl (meth) acrylate.
- a polyfunctional monomer having at least two polymerizable unsaturated bonds [ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, butane diol di (meth) acrylate, neopentyl]
- Alkylene glycol di (meth) acrylate such as glycol di (meth) acrylate and hexanediol di (meth) acrylate
- Jet length (Poly) oxyalkylene glycol di (meth) acrylate such as cold di (meth) acrylate, dipropylene glycol di (meth) acrylate, polytetramethylene glycol di (meth) acrylate
- bisphenol A-alkylene oxide adduct (meth) acrylate epoxy (meth) acrylate (bisphenol A type epoxy (meth) acrylate, novolak type epoxy (meth) acrylate) Rate), polyester (meth) acrylate (eg, aliphatic polyester type (meth) acrylate, aromatic polyester type (meth) acrylate), (poly) urethane (meth) acrylate (eg, polyester type) Examples include urethane (meth) acrylate, polyether type urethane (meth) acrylate, and silicone (meth) acrylate. These photocurable compounds can be used alone or in combination of two or more.
- the curable resin precursor is a photocurable compound that can be cured in a short time, for example, an ultraviolet curable compound (such as a monomer, an oligomer, or a resin having a low molecular weight), EB curing, and the like. It is a sex compound.
- a practically advantageous resin precursor is an ultraviolet curable resin.
- the photocurable resin is a compound having 2 or more (preferably about 2 to 6, more preferably about 2 to 4) polymerizable unsaturated bonds in the molecule. Is preferred.
- the molecular weight of the curable resin precursor is about 5000 or less, preferably about 2000 or less, more preferably about 1000 or less in consideration of compatibility with the polymer.
- the curable resin precursor may contain a curing agent depending on the type thereof.
- the thermosetting resin may contain a curing agent such as amines and polyvalent carboxylic acids
- the photocurable resin may contain a photopolymerization initiator.
- the photopolymerization initiator include conventional components such as acetophenones or propiophenones, benzyls, benzoins, benzophenones, thixanthones, and acylolephosphine oxides.
- the content of a curing agent such as a photo-curing agent is from 0.5 to 20 parts by weight, preferably from 0.5 to 10 parts by weight, more preferably from 1 to 100 parts by weight per 100 parts by weight of the curable resin precursor. It is about 8 parts by weight (particularly 1 to 5 parts by weight), and may be about 3 to 8 parts by weight.
- the curable resin precursor may contain a curing accelerator.
- the photocurable resin may contain a photocuring accelerator, for example, a tertiary amine (eg, dialkylaminobenzoic ester), a phosphine photopolymerization accelerator, and the like.
- At least one polymer and at least one curable resin precursor at least two components are used in a combination that phase separates from each other near the processing temperature.
- combinations for phase separation include (a) a combination in which a plurality of polymers are incompatible with each other and (b) a combination in which a polymer and a curable resin precursor are incompatible and phase separated.
- C A combination in which a plurality of curable resin precursors are incompatible with each other and phase-separated.
- (a) a combination of a plurality of polymers and (b) a combination of a polymer and a curable resin precursor are generally preferable, and (a) a combination of a plurality of polymers is particularly preferable.
- thermoplastic resin and the curable resin precursor are usually incompatible with each other.
- a plurality of polymers may be used as the polymer.
- multiple polymers it is sufficient if at least one polymer is incompatible with the resin precursor (or cured resin), other polymers may be compatible with the resin precursor, .
- thermoplastic resins that are incompatible with each other and a curable compound (in particular, a monomer or oligomer having a plurality of curable functional groups) may be used. Furthermore, from the viewpoint of scratch resistance after curing, one of the incompatible thermoplastic resins (especially both polymers) is involved in the curing reaction (functionally involved in the curing of the curable resin precursor). A thermoplastic resin having a functional group).
- the curable resin precursor has a processing temperature close to at least one of the incompatible polymers. Used in combinations that are compatible with each other. That is, when a plurality of incompatible polymers are composed of, for example, the first resin and the second resin, there are few curable resin precursors. As long as it is compatible with either the first resin or the second resin, it may be compatible with both polymer components. When compatible with both polymer components, at least two phases of a mixture mainly composed of the first resin and the curable resin precursor and a mixture mainly composed of the second resin and the curable resin precursor. Phase separate.
- the refractive index of the polymer and the cured or crosslinked resin produced by curing the resin precursor are different from each other.
- the refractive indexes of a plurality of polymers are also different from each other.
- the difference in refractive index between the polymer and the cured or cross-linked resin, and the difference in refractive index between the plurality of polymers (the first resin and the second Kitsuki) are 0.001 to 0.2. Preferably, it may be about 0.05 to 0.15.
- the ratio (weight ratio) between the polymer and the curable resin precursor is not particularly limited.
- the polymer / curable resin precursor can be selected from the range of about 5/95 to 95/5, From the viewpoint of surface hardness, it is preferably about 5/95 to 60/40, more preferably about 10/90 to 50/50, particularly about 10/90 to 40/60.
- the solvent can be selected and used according to the type and solubility of the polymer and curable resin precursor, and at least solids (multiple polymers and curable resin precursors, reaction initiators, other additives) Any solvent that can dissolve uniformly can be used in wet spinodal decomposition.
- Such solvents include, for example, ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), ethers (dioxane, tetrahydrofuran, etc.), aliphatic hydrocarbons (hexane, etc.) , Alicyclic hydrocarbons (cyclohexane, etc.), aromatic hydrocarbons (toluene, xylene, etc.), halogenated carbons (dichloromethane, dichloroethane, etc.), esters (methyl acetate, ethyl acetate, butyl acetate, etc.) ), Water, alcohols (ethanol, isopropanol, butanol, cyclo Hexanol, etc.), cellosolves (methyl cetosolve, ethylcetosolve, etc.), cellosolve acetates, sulfoxides (dimethyl sul
- the concentration of the solute (polymer and curable resin precursor, reaction initiator, other additives) in the composition for the antiglare layer is within a range where phase separation occurs and does not impair castability and coating properties. For example, it is about:! To 80 wt%, preferably 5 to 60 wt%, more preferably 15 to 40 wt% (especially 20 to 40 wt%).
- the antiglare layer can be formed using an antiglare layer composition comprising at least one polymer and at least one curable resin precursor. Then, by using an anti-glare layer composition in which at least one polymer and at least one curable resin precursor are mixed together with an appropriate solvent, a phase separation structure is formed by spinodal decomposition from the liquid phase and cured. It can be produced by curing the resin precursor and forming at least an antiglare layer.
- the combination forming the phase separation structure may be, for example, a plurality of polymers, a polymer and a curable resin precursor, a plurality of curable resin precursors, or the like.
- a thermoplastic resin, a photocurable compound (such as a photopolymerizable monomer or oligomer), a photopolymerization initiator, and a solvent (common solvent) in which the thermoplastic resin and the photocurable compound are soluble are used.
- the anti-glare layer may be formed by forming a phase separation structure by spinodal decomposition from the containing composition and irradiating with light.
- thermoplastic resin a resin incompatible with the thermoplastic resin and having a photocurable group
- a photocurable compound a photopolymerization initiator
- resin and a photocurable compound and a soluble solvent may be formed by forming a phase separation structure by spinodal decomposition from a composition containing, and irradiating with light. In these methods, it is possible to form at least one antiglare layer on the light transmissive substrate.
- the antiglare layer is formed by applying a composition for an antiglare layer obtained by mixing at least one polymer and at least one curable resin precursor using an appropriate solvent to a light-transmitting substrate, and then using a solvent.
- a process of forming a phase separation structure by spinodal decomposition accompanying evaporation, and a curable resin It can be obtained by curing the precursor and at least undergoing a step of forming an antiglare layer.
- the phase separation step is usually a step of applying or casting a liquid mixture (particularly a liquid composition such as a uniform solution) containing a polymer, a curable resin precursor, and a solvent to the surface of the light-transmitting substrate, and a coating layer. Or a step of evaporating the solvent from the casting layer to form a phase separation structure having a regular or periodic average interphase distance.
- the mixed solution includes a thermoplastic resin, a photocurable compound, a photopolymerization initiator, and a solvent in which the thermoplastic resin and the photocurable compound are soluble.
- a composition for an antiglare layer can be used, and an antiglare layer is formed by curing a photocurable component having a phase separation structure formed by spinodal decomposition by light irradiation.
- a composition for an antiglare layer comprising a plurality of incompatible polymers, a photocurable compound, a photopolymerization initiator, and a solvent can be used as a mixed solution.
- the antiglare layer is formed by curing the photocuring component of the phase separation structure formed by spinodal decomposition by light irradiation.
- phase separation structure formed by spinodal decomposition can be immediately fixed by curing the curable resin precursor.
- Curing of the curable resin precursor can be performed by heating, light irradiation, or a combination of these methods, depending on the type of curable resin precursor.
- the heating temperature can be selected from an appropriate range, for example, about 50 to 150 ° C, and can be selected from the same temperature range as the layer separation step.
- the antiglare layer constituting a part of the optical laminate is formed by a phase separation structure of the antiglare layer and spinodal decomposition (wet spinodal decomposition) from the liquid phase. That is, using the composition for an antiglare layer according to the present invention composed of a polymer, a curable resin precursor, and a solvent, from the liquid phase (or a uniform solution or a coating layer thereof) of the composition for an antiglare layer, In the process of evaporation or removal by drying, etc., phase separation by spinodal decomposition occurs as the concentration increases, and a phase separation structure with a relatively regular interphase distance can be formed.
- spinodal decomposition wet spinodal decomposition
- the wet spinodal degradation typically involves at least one polymer and at least one curable resin.
- An antiglare layer composition comprising a precursor and a solvent (preferably a homogeneous solution) is applied to a support, and the coating layer force can be evaporated by evaporating the solvent.
- a co-continuous phase structure is formed as the phase separation proceeds, and when the phase separation further proceeds, the continuous phase becomes discontinuous by its surface tension. It becomes a droplet phase structure (sea-island structure of independent phase such as spherical, true spherical, disk-like or ellipsoidal). Therefore, an intermediate structure between the co-continuous phase structure and the droplet phase structure (phase structure in the process of transition from the co-continuous phase to the droplet phase) can be formed depending on the degree of phase separation.
- the phase separation structure of the antiglare layer of the present invention may be a sea-island structure (droplet phase structure, or a phase structure in which one phase is independent or isolated) or a co-continuous phase structure (or network structure).
- An intermediate structure in which a phase structure and a droplet phase structure are mixed may be used. With these phase separation structures, fine irregularities can be formed on the surface of the antiglare layer after solvent drying.
- a droplet phase structure having at least island-like domains is advantageous from the viewpoint that irregularities are formed on the surface of the antiglare layer and the surface hardness is increased.
- the phase separation structure composed of the polymer and the precursor (or cured resin) is a sea-island structure
- the polymer component may form a sea phase, but from the viewpoint of surface hardness, one polymer component Preferably form island-like domains.
- island-like domains an uneven shape that exhibits desired optical characteristics is formed on the surface of the antiglare layer after drying.
- the average distance between the domains of the phase separation structure is usually substantially regular or periodic.
- the average interphase distance between domains is, for example::! To 70 ⁇ ⁇ (eg: !! to 40/1111), preferably 2 to 50 111 (column, 3 to 30 111), more preferably It may be about 5-20 111 (for example, 10-20 / im).
- the anti-glare layer according to the present invention forms an anti-glare layer, and then, after the surface of the anti-glare layer is subjected to a forming treatment to give the uneven shape, the anti-glare layer having the uneven shape is formed. You can do it.
- an antiglare layer is formed on a light-transmitting substrate, and an uneven shape is formed on the surface of the antiglare layer.
- Embossed plates, embossed rolls, etc. are listed as the molds with the reverse concavo-convex shape. 3—Same as 2).
- the antiglare layer according to the present invention comprises a light-transmitting substrate in a mold having a concavo-convex shape opposite to the concavo-convex shape formed on the surface of the antiglare layer. It may be formed as an antiglare layer having a desired uneven shape.
- This forming method has the advantage that an optical laminate having an antiglare layer having a desired concavo-convex shape can be obtained without blending fine particles.
- a concavo-convex mold in which the shape opposite to the desired concavo-convex shape is formed on the mold surface, applying a composition for antiglare layer having excellent curability on the light-transmitting substrate, followed by curing treatment and light-transmitting
- a base material and an antiglare layer having an uneven shape can be integrated to produce an optical laminate.
- the composition for the antiglare layer may be applied after the application for the antiglare layer, or the composition for the antiglare layer may be supplied to the interface between the light transmissive substrate and the uneven type,
- the composition for the antiglare layer may be interposed between the concavo-convex mold and the light-transmitting substrate to form the concavo-convex shape and form the antiglare layer at the same time.
- a flat embossed plate can be used in addition to the embossed roller.
- the concave-convex surface formed on the embossing roller or the flat embossing plate can be formed by various methods, specifically, the sand blasting method or the bead shot method.
- the antiglare layer formed by using an embossing plate (embossing roller) by sandblasting has a shape in which a large number of concave shapes (on the other hand, convex cross-sectional shapes on the lower side) are distributed.
- An antiglare layer formed using an embossed plate (embossing roller) by the bead shot method has a shape in which a large number of convex shapes on the upper side (on the other hand, a convex sectional shape on the upper side) are distributed.
- the antiglare layer having a shape in which the convex portions are distributed on the upper side has a large number of concave portions on the upper side. It is said that there are few reflections of indoor lighting devices, etc., compared with those having a shape. Therefore, according to a preferred embodiment of the present invention, it is preferable to form the concavo-convex shape of the antiglare layer using a concavo-convex mold formed in the same shape as the concavo-convex shape of the antiglare layer by the bead shot method.
- the concave / convex shape formed by the concave / convex mold is formed such that a portion having a cross-sectional shape convex on the upper side and a portion having a cross-sectional shape convex on the lower surface are more.
- the uneven shape of the antiglare layer can be formed by using a concave / convex shape formed in a shape opposite to the uneven shape of the antiglare layer by a bead shot method. Formed by this uneven type The uneven shape thus formed is such that the portion of the cross-sectional shape that protrudes downward (ie, the concave portion) is larger than the portion of the cross-sectional shape that protrudes upward (ie, the convex portion).
- the mold material for forming the concavo-convex mold surface metal, plastic, wood, or a composite thereof can be used.
- chromium is preferred as a metal, chromium is plated on the surface of an iron embossing plate (embossing roller). These are preferably exemplified.
- the particles (beads) to be sprayed when forming the concavo-convex mold by the sandblasting method or the bead shot method include metal particles, inorganic particles such as silica, alumina, or glass.
- the particle diameter (diameter) of these particles is preferably about 100 x m to 300 zm.
- a method of spraying these particles together with a high-speed gas can be mentioned.
- use an appropriate liquid such as water.
- a surface adjustment layer may be formed in order to adjust the uneven surface of the antiglare layer.
- the surface adjustment layer is integrated with the antiglare layer and exhibits an antiglare function. Therefore, when the surface adjustment layer is formed, the optical property values such as Sm, ⁇ a, Rz, etc., which are the values of the surface irregularities, are within the scope of the present invention. In other words, when the surface adjustment layer is provided on the antiglare layer, the surface irregularity shape of the surface adjustment layer naturally matches the optical characteristic value of the surface irregularity shape of the antiglare layer in the present invention. The above can be understood from the following contents and examples of the surface adjustment layer.
- the surface adjustment layer forms an uneven shape of the antiglare layer, and has an uneven scale in the surface roughness.
- the surface adjustment layer is intended to impart antistatic properties, refractive index adjustment, increased hardness, antifouling properties, etc. It is formed as a target.
- the film thickness of the surface adjustment layer (when cured) is 0.5 ⁇ m or more and 20 ⁇ m or less (preferably 12 / im or less), preferably the lower limit is 3 ⁇ m or more and the upper limit is 8 ⁇ m or less C, is there.
- the surface conditioner is selected from the group consisting of antistatic agents, refractive index adjusters, antifouling agents, water repellents, oil repellents, fingerprint adhesion preventives, high curing agents and hardness modifiers (buffering agents). Or a mixture of two or more of them.
- an antistatic agent in the surface adjustment layer, it is possible to effectively prevent dust from adhering to the surface of the optical laminate.
- the antistatic agent include quaternary ammonium salts, pyridinium salts, various powers having cationic groups such as primary to tertiary amino groups, thione compounds, sulfonate groups, sulfate ester bases, and phosphates.
- Anionic compounds having anionic groups such as ester bases, phosphonic acid bases, amphoteric compounds such as amino acids and aminoaminoesters, nonionic compounds such as aminoanolecols, glycerols, and polyethylene glycols, tin and Examples thereof include organometallic compounds such as titanium alkoxides and metal chelate compounds such as acetylacetonate salts thereof, and further compounds obtained by polymerizing the compounds listed above.
- Organic metal compounds such as coupling agents having a tertiary amino group, a quaternary ammonium group, or a monomer or oligomer that has a metal chelate moiety and can be polymerized by ionizing radiation, or a functional group
- Polymeric compounds such as can also be used as antistatic agents.
- conductive ultrafine particles can be mentioned.
- Specific examples of the conductive fine particles include those made of a metal oxide.
- metal oxides include ZnO (refractive index of 1.90, the numerical value in Katsuko represents the refractive index), CeO (1.95), SbO (1.71).
- the fine particles are those having a so-called submicron size of 1 micron or less, and preferably those having an average particle size of 0. In m to 0.
- the antistatic agent include conductive polymers, and specific examples thereof include aliphatic conjugated polyacetylene, aromatic conjugated poly (paraphenylene), heterocyclic conjugated polypyrrole, Other examples include polythiophene, heteroatom-containing polyalyrin, and mixed conjugated poly (phenylene vinylene). Besides these, double-chain conjugated systems that have multiple conjugated chains in the molecule And a conductive composite that is a polymer obtained by grafting or block-copolymerizing the conjugated polymer chain with a saturated polymer.
- the addition ratio of the resin and antistatic agent contained in the surface adjustment layer is 5 or more and 25 or less, preferably the upper limit is 20 or less, and the lower limit is 5 or more. .
- refractive index adjusting agent examples include a low refractive index agent, a medium refractive index agent, and a high refractive index agent.
- the low refractive index agent has a refractive index lower than that of the antiglare layer.
- the refractive index of the antiglare layer is 1.5 or more, and the refractive index of the low refractive index agent is less than 1.5, preferably 1.45 or less. Is preferred.
- silicone-containing vinylidene fluoride copolymer examples include et al is, hexa full O b propylene 5-50 as an example to 30 to 90 weight 0/0 and vinylidene fluoride 100 parts by weight of a fluorine-containing copolymer having a fluorine content ratio of 60 to 70% by weight obtained by copolymerization of a monomer composition containing 50% by weight, and a polymerizable compound having an ethylenically unsaturated group 80 to 150% by weight The composition which consists of a part is mentioned.
- Examples of the fluorine-containing copolymer include a copolymer obtained by copolymerizing a monomer composition containing vinylidene fluoride and hexafluoropropylene.
- the proportion of each component in the monomer composition is 30 to 90% by weight of vinylidene fluoride, preferably 40 to 80% by weight, particularly preferably 40 to 70% by weight, or 5 to 50% by weight of hexafluoropropylene. %, Preferably 10 to 50% by weight, particularly preferably 15 to 45% by weight.
- the monomer composition may further contain 0 to 40% by weight, preferably 0 to 35% by weight, particularly preferably 10 to 30% by weight of tetrafluoroethylene.
- this copolymer examples include fluoroethylene, trifluoroethylene, chlorotrifluoroethylene, 1,2-dichloroethylene 1,2_difluoroethylene, 2-bromo-3,3,3_trifluoro Ethylene, 3-bromo-3,3-difluoropropylene, 3, 3, 3_ It is possible to enumerate polymerizable monomers having fluorine atoms, such as Len, 1, 1, 2_Lichloro-1,3,3_3 Lifnore, propylene, and trifluoromethacrylic acid.
- the fluorine content of the fluorine-containing copolymer obtained from such a monomer composition is preferably 60 to 70 wt%, more preferably 62 to 70 wt%, particularly preferably 64 to 68 wt%. %. When the addition ratio is in such a range, it has good solubility in the solvent described later.
- a fluorine-containing copolymer as a component, an optical laminate having excellent adhesion, high transparency, low refractive index, and excellent mechanical strength is formed. Is possible.
- the fluorine-containing copolymer has a molecular weight of 5,000 to 200,000, in particular 10,000 to 100,000, in terms of polystyrene number average molecular weight.
- a fluorine-containing copolymer having a molecular weight of such a size the viscosity of the resulting fluorine-based resin composition becomes a suitable size, and accordingly, a fluorine-based resin composition having surely suitable coating properties. The ability to do S.
- the refractive index of the fluorine-containing copolymer itself is 1.45 or less, preferably 1.42 or less, more preferably 1.40 or less. When the refractive index is in this range, the antireflection effect of the formed optical laminate is preferable.
- the amount of the resin added is 30 to 150 parts by weight, preferably 35 to 100 parts by weight, particularly preferably 40 to 70 parts by weight, based on 100 parts by weight of the fluorine-containing copolymer.
- the fluorine content in the total amount of the polymer-forming components including the fluorine-containing copolymer and the resin is preferably 30 to 55% by weight, and preferably 35 to 50% by weight.
- fine particles having voids can lower the refractive index while maintaining the layer strength of the surface adjustment layer.
- fine particles having voids refers to a structure in which fine particles are filled with gas and / or a porous structure containing gas, and the amount of gas in the fine particles is smaller than the original refractive index of the fine particles. It means fine particles whose refractive index decreases in inverse proportion to the occupation ratio.
- a nanoporous structure can be formed on at least a part of the inside and / or the surface depending on the form, structure, aggregation state, and dispersion state of the fine particles inside the coating film. Fine particles are also included.
- silica fine particles prepared by using the technique disclosed in JP-A-2001-233611 are preferably exemplified. Since silica fine particles with voids are easy to manufacture and have high hardness themselves, when mixed with a binder to form a surface conditioning layer, the layer strength is improved and the refractive index is 1.20 to :! ⁇ It is possible to prepare within the range of about 45.
- hollow polymer fine particles prepared using a technique disclosed in JP-A-2002-80503 are preferably exemplified.
- the fine particles capable of forming a nanoporous structure inside and / or at least part of the surface of the coating film are manufactured for the purpose of increasing the specific surface area by using the silica fine particles as a cover.
- Column and surface release material that adsorbs various chemical substances, porous fine particles used for catalyst fixation, or dispersions of hollow fine particles intended to be incorporated into heat insulating materials and low dielectric materials There may be mentioned aggregates.
- an aggregate of porous silica fine particles from the product names Nipsil and Nipgel manufactured by Nippon Silica Kogyo Co., Ltd., and silica fine particles manufactured by Nissan Chemical Industries, Ltd. are linked in a chain. From the colloidal silica UP series (trade name) having the above structure, those within the preferred particle diameter range of the present invention can be used.
- the average particle size of the “fine particles having voids” is 5 nm or more and 300 nm or less, preferably the lower limit is 8 nm or more and the upper limit is lOOnm or less, more preferably the lower limit is 10 nm or more and the upper limit is 80 nm or less. It is. By the average particle size of the fine particles being within this range It is possible to impart excellent transparency to the surface adjustment layer.
- a high refractive index agent and a medium refractive index agent may be added to the surface adjustment layer in order to further improve the antireflection property.
- the refractive index of the high refractive index agent and medium refractive index agent is set within the range of 1.46-2.00, and the refractive index of the medium refractive index agent is within the range of 1.46-1.80.
- refractive index agents include fine particles, and specific examples (indicated by the refractive index in parentheses) include zinc oxide (1.90), titania (2.3 to 2.7), ceria. (1.95), tin-doped indium oxide (1.95), antimony-doped tin oxide (1.80), yttria (1.87), and zirconia (2.0).
- the surface adjustment layer can be supplemented with a leveling agent.
- a leveling agent include fluorine-based or silicone-based agents.
- the surface conditioning layer with the addition of a leveling agent improves the coating surface, effectively prevents the inhibition of curing due to oxygen on the coating surface during application or drying, and provides the effect of scratch resistance. Make it possible.
- An antifouling agent can be added to the surface adjustment layer.
- the antifouling agent is mainly intended to prevent the outermost surface of the optical laminate from being stained, and can further impart scratch resistance to the optical laminate.
- additives that exhibit water repellency, oil repellency, and fingerprint wiping properties are effective. More specific examples include fluorine compounds, silicon compounds, and mixed compounds thereof. More specific examples include silane coupling agents having a fluoroalkyl group such as 2-perfluorooctyltriaminosilane, and those having an amino group are particularly preferably used.
- the surface conditioning layer may be adjusted at least by a surface conditioning agent and a resin (including resin components such as monomers and oligomers). When no surface conditioner is contained, this resin plays a role as a high effect agent or smoothes the unevenness of the antiglare layer.
- the resin is preferably transparent, and specific examples thereof include ultraviolet rays or electrons.
- ionizing radiation curable resins that are resins curable by wire, a mixture of ionizing radiation curable resins and solvent-drying resins, or thermosetting resins, preferably ionizing radiation curable resins. It is done.
- ionizing radiation curable resin examples include those having an acrylate functional group, for example, relatively low molecular weight polyester resin, polyether resin, acrylic resin, epoxy resin, urethane resin, alkyd resin. , Oligomers such as (meth) alloyates of polyfunctional compounds such as polyhydric alcohols, prepolymers, reactive diluents, and reactive diluents.
- ethyl (meta ) Monofunctional monomers such as acrylate, ethyl hexyl (meth) acrylate, styrene, methyl styrene, N_butylpyrrolidone and polyfunctional monomers such as polymethylolpropane tri (meth) acrylate, hexanediol (meta ) Atarylate, tripropylene glycol (Meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hex (meth) acrylate, 1, 6-hexanediol di (meth) acrylate, neo Examples include pentyl glycol di (meth) acrylate.
- an ionizing radiation curable resin is used as an ultraviolet curable resin
- a photopolymerization initiator include acetophenones, benzophenones, Michler benzoyl benzoate, a amyl oxime ester, and thixanthone.
- Specific examples of the photosensitizers preferably used in combination include n-butylamine, triethylamine, and poly n-butylphosphine.
- a photopolymerization initiator or a photopolymerization accelerator can be added.
- the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group, acetophenone, benzophenone, thixanthone, benzoin, benzoin methyl ether or the like is used alone or in combination.
- an aromatic diazonium salt, an aromatic sulfonium salt, an aromatic odonium salt, a metathelone compound, a benzoin sulfonic acid ester, etc. alone or as a photopolymerization initiator Used as Photopolymerization started
- the addition amount of the agent is 0.:! To 10 parts by weight with respect to 100 parts by weight of the ionizing radiation curable composition.
- the solvent-drying resin used by mixing with the ionizing radiation curable resin mainly includes a thermoplastic resin.
- a thermoplastic resin those generally exemplified are used.
- a solvent-drying type resin By adding a solvent-drying type resin, coating film defects on the coated surface can be effectively prevented.
- preferable thermoplastic resins include, for example, styrene resins, (meth) acrylic resins, vinyl acetate resins, vinyl ether resins, halogen-containing resins, alicyclic olefin resins, polycarbonate resins, and polyesters. Resin, polyamide resin, cellulose derivative, silicone resin, rubber or elastomer.
- the resin a resin that is amorphous and is soluble in an organic solvent (especially a common solvent capable of dissolving a plurality of polymers and curable compounds) is usually used.
- resins with high moldability or film-forming properties, transparency and high weather resistance such as styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters, etc. Etc.) are preferred.
- the material of the light-transmitting substrate is a cellulose resin such as TAC
- preferred specific examples of the thermoplastic resin include cellulose resins such as nitrocenorelose and acetinorescenole. Examples thereof include sucrose, sennellose acetate propionate, and ethinorehydroxy cellulose.
- cellulose derivatives such as acetyl cellulose, nitrocellulose, acetyl butyl cellulose, ethyl senolose, methino cellulose, vinylinole acetate and its copolymer, butyl chloride and its copolymer, chloride Vinyl resins such as vinylidene and copolymers thereof, acetal resins such as polybul formal and polybutyl butyral, acrylic resins and copolymers thereof, acrylic resins such as methacryl resins and copolymers thereof, polystyrene resins , Polyamide resin, polycarbonate resin, etc.
- thermosetting resin examples include phenol resin, urea resin, diallyl phthalate resin, melanin resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin.
- examples thereof include xy resin, amino alkyd resin, melamine urea co-condensation resin, key resin, and polysiloxane resin.
- a curing agent such as a cross-linking agent and a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier and the like as necessary.
- a photopolymerization initiator When forming the surface conditioning layer, a photopolymerization initiator can be used, and specific examples thereof include 1-hydroxy monocyclohexyl monophenyl monoketone. This compound is commercially available, for example, trade name “Irgacure 184” (manufactured by Ciba Specialty Chemicals).
- a surface conditioning layer composition in which the above components are mixed with a solvent is used.
- the solvent include alcohols such as isopropyl alcohol, methanol and ethanol; ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; esters such as methyl acetate, ethyl acetate and butyl acetate; Hydrocarbons; aromatic hydrocarbons such as toluene and xylene; or a mixture thereof, and ketones and esters are preferable.
- the surface adjustment layer may be formed by applying the surface adjustment layer composition to the antiglare layer.
- the method for applying the surface adjustment layer composition include application methods such as a roll coating method, a Miyaba coating method, and a gravure coating method. After application of the composition for the surface adjustment layer, drying and UV curing are performed.
- Specific examples of the ultraviolet light source include ultra-high pressure mercury lamps, high pressure mercury lamps, low pressure mercury lamps, carbon arc lamps, black light fluorescent lamps, and metal halide lamp light sources.
- the wavelength of the ultraviolet light a wavelength range of 190 to 380 nm can be used.
- the electron beam source include various types of electron beam accelerators such as a cockcroft / norret type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type.
- electron beam accelerators such as a cockcroft / norret type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type.
- the optical laminate according to the present invention comprises a light-transmitting substrate, an antiglare layer, and surface adjustment as necessary.
- the layer may further comprise an antistatic layer, a low refractive index layer, an antifouling layer and the like as optional layers.
- the arbitrary surface of the optical laminate according to the present invention on which an arbitrary layer is formed naturally matches the optical surface property of the surface uneven surface of the antiglare layer in the present invention. Street.
- the low refractive index layer preferably has a refractive index lower than that of the antiglare layer or the surface adjustment layer.
- the antistatic layer, the low refractive index layer, and the antifouling layer were prepared by adding a resin or the like to the antistatic agent, low refractive index agent, antifouling agent, etc. described in the surface adjustment layer. It may be formed. Accordingly, antistatic agents, low refractive index agents, antifouling agents, resins and the like may be the same.
- the light-transmitting substrate preferably has smoothness and heat resistance and is excellent in mechanical strength.
- the material for forming the light-transmitting substrate include polyester (polyethylene terephthalate, polyethylene naphthalate), cenololose triacetate, cenololose diacetate, cellulose acetate butyrate, polyamide, polyimide, polyethersulfone, polyester.
- thermoplastic resins such as lisulfone, polypropylene, polymethylpentene, polyvinyl chloride, polyvinylacetal, polyether ketone, polymethyl methacrylate, polycarbonate, and polyurethane, and preferably polyester (polyethylene terephthalate, polyethylene naphthalate).
- Phthalate and cellulose triacetate.
- an amorphous olefin polymer (Cyclo-Olefin-Polymer: COP) film with an alicyclic structure, which is a norbornene polymer, a monocyclic olefin polymer, a cyclic conjugated gen heavy polymer.
- amorphous olefin polymer (Cyclo-Olefin-Polymer: COP) film with an alicyclic structure, which is a norbornene polymer, a monocyclic olefin polymer, a cyclic conjugated gen heavy polymer.
- ZEONEX ZEONOR norbornene resin manufactured by Nippon Zeon Co., Ltd.
- Sumilite FS_1700, JSR manufactured by Sumitomo Bakelite Co., Ltd.
- Arton modified norbornene resin
- Apell (cyclic olefin copolymer), Ticona Co. Topas (cyclic olefin copolymer), Hitachi Chemical Co., Ltd. Opttrez OZ-1000 series (Alicyclic acrylic resin).
- the FV series low birefringence, low photoelasticity film manufactured by Asahi Kasei Chemicals Corporation is also preferred as an alternative base material for triacetyl cellulose.
- thermoplastic resins it is preferable to use these thermoplastic resins as a film-like body rich in thin film flexibility. However, depending on the use mode in which curability is required, these thermoplastic resins are used. It is also possible to use a plate of a plastic resin plate or a glass plate.
- the thickness of the light-transmitting substrate is 20 / im to 300 ⁇ , preferably the upper limit is 200 / im or less and the lower limit is 30 / m or more. If the light-transmitting substrate is a plate-like body, the thickness exceeds these thicknesses.
- a physical treatment such as corona discharge treatment or oxidation treatment is applied, and a coating called an anchor agent or primer is applied. It may be performed in advance.
- optical laminate produced by the production method according to the present invention has the following uses. ⁇
- a polarizing plate comprising a polarizing element and the optical laminate according to the present invention can be provided. Specifically, it is possible to provide a polarizing plate provided on the surface of the polarizing element, the optical laminate according to the present invention on the surface opposite to the surface on which the antiglare layer is present in the optical laminate.
- the polarizing element for example, a polybulal alcohol film, a polyvinyl formal film, a polybulassal film, a saponified film of ethylene-vinyl acetate copolymer, or the like, which is dyed with iodine or a dye and stretched, is used. Can do. In the laminating process, it is preferable to saponify the light-transmitting substrate (preferably, triacetyl cellulose film) in order to increase adhesion or prevent electricity.
- the light-transmitting substrate preferably, triacetyl cellulose film
- an image display device can be provided, and the image display device includes a transmissive display body and a light source device that irradiates the transmissive display body from the back.
- the optical laminate according to the present invention or the polarizing plate according to the present invention is formed on the surface of this transmissive display.
- the image display device according to the present invention basically comprises a light source device (backlight), a display element, and the optical laminate according to the present invention.
- the image display device is used for a transmissive display device, and is particularly used for display display of a television, a computer, a word processor, or the like. In particular, it is used on the surface of high-definition image displays such as CRTs and liquid crystal panels.
- the image display device according to the present invention is a liquid crystal display device
- the light source of the light source device is included in the present invention. Irradiation is performed from the lower side of the optical laminate.
- a retardation plate may be inserted between the liquid crystal display element and the polarizing plate.
- An adhesive layer may be provided between the respective layers of the liquid crystal display device as necessary.
- composition of each layer constituting the optical laminate was prepared according to the following composition.
- the outline of the composition was as shown in Table 1.
- composition for antiglare layer Silica-containing coating composition (manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40-77 (D-30M)” (average particle size of amorphous silica: 1.5 / m) ) ”, 100 parts by mass of resin (binder), 7.5 parts by mass of amorphous silica (average particle size: 1.5 / m), and 30 parts by mass of monodisperse acrylic beads (Corporation)
- the composition 1 for an antiglare layer having the following composition was prepared so as to have a particle size of 5.0 ⁇ and a refractive index of 1.53), manufactured by Nippon Shokubai.
- UV curable resin pentaerythritol tritalylate ( ⁇ ) (refractive index 1.51) manufactured by Nippon Kayaku Co., Ltd. 7.34 parts by mass of DPHA (UV curable resin) Nippon Kayaku Co., Ltd., refractive index 1.51), 2.10 parts by mass of acrylic polymer (The Inktec, trade name: “HRAG acrylic” molecular weight 75,000), cellulose polymer (cellulose propionate) ) 0.90 parts by mass (trade name: “CAP_10V”), Irgacure 184, which is a photocuring initiator, 1.82 parts by mass (manufactured by Ciba Geigy Co., Ltd.), which is also a photocuring initiator.
- UV-curable resin (Daiichi Seika ( ), Trade name: EXG40-77 (D-30M) contains an irregular sill force, average particle size 1 ⁇ 5 ⁇ , refractive index 1 ⁇ 46), silicone leveling agent 0.09 parts by mass of 10-28 (made by The Inktech), 0.07 parts by mass of silicon leveling agent 10-301 Seisei Co., Ltd.), 45.25 parts by mass of toluene, and 9.72 parts by mass of cyclohexanone were sufficiently mixed to prepare a coating solution. It was prepared antiglare layer composition 1 The coating liquid was filtered through a polypropylene filters having a pore size of 80 beta m.
- Silica-containing paint composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40_77 (D_30M)” (average particle diameter of amorphous silica: 1.5 ⁇ m))
- resin binder
- amorphous silica average particle size: 1.5 zm
- monodisperse acrylic beads are 20 parts by mass (made by Nippon Shokubai Co., Ltd., particle size 5.0)
- An antiglare layer composition 2 having the following composition was prepared so as to have xm and a refractive index of 1.53).
- UV curable resin pentaerythritol tritalylate PETA
- UV curable resin Nippon Kayaku Co., Ltd., refractive index 1.51
- acrylic polymer 2.25 parts by mass The Inktec, trade name: “HRAG acrylic” molecular weight 75,000
- cellulose polymer cellulose propionate
- CAP-10V CAP-10V
- Silica-containing coating composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40_77 (ZZ_15M)” (average particle size of amorphous silica: 2.5 zm))
- resin binder
- the composition 3 for an antiglare layer having the following composition was prepared so as to have 30 parts by mass (manufactured by Nippon Shokubai Co., Ltd., particle size 7.0 ⁇ , refractive index 1.53).
- UV-curing resin pentaerythritol tritalylate ( ⁇ ) (refractive index 1.51) manufactured by Nippon Kayaku Co., Ltd. 5.13 parts by weight of DPHA, UV-curing resin ( Nippon Kayaku Co., Ltd., refractive index 1.51), acrylic polymer 1.47 parts by mass (The Ink Tech, trade name: “HRAG acrylic” molecular weight 75,000), cellulose polymer (cellulose propionate) 2.
- Silica-containing coating composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40-77 (ZZ-15M)” (average particle diameter of amorphous silica: 2.5 / m)) ”and resin (binder )
- resin binder
- 100 parts by mass 7.5 parts by mass of amorphous silica (average particle size: 2.5 / m) and 20 parts by mass of monodisperse acrylic beads (manufactured by Nippon Shokubai Co., Ltd., particle size 7.
- An antiglare layer composition 4 having the following composition was prepared so as to have 0 xm and a refractive index of 1.53).
- UV curable resin pentaerythritol triatalylate PETA
- Refractive index 1.51 made by Nippon Kayaku Co., Ltd. 5.50 parts by mass of UV curable resin DPHA ( Nippon Kayaku Co., Ltd., refractive index 1.51), acrylic polymer 1.57 parts by mass (The Inc.
- Ilgacure 184 which is a polymerization initiator, 2.15 parts by mass (manufactured by Ciba Geigy), 0.17 parts by mass of Irgacure 907, which is also a photocuring initiator (manufactured by Ciba Geigy), monodisperse as translucent fine particles 6.01 parts by mass of acrylic beads (manufactured by Nippon Shokubai Co., Ltd., particle size 7.0 / m, refractive index 1.53), 3.33 parts by mass of inorganic amorphous silica contained in UV curable resin (Product name; manufactured by Dainichi Seika Co., Ltd .; EXG40_77 (Z-15M)), unshaped silica force, average particle size 2.5 xm, refractive index 1.
- Anti-glare layer composition 3 except that it was changed to monodisperse acrylic beads with a particle size of 9.5 zm (made by Nippon Shokubai Co., Ltd., refractive index 1.53) as translucent fine particles.
- a composition 5 for glare layer was prepared.
- Silica-containing coating composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40-77 (ZZ-15M)” (average particle diameter of amorphous silica: 2.5 / m)) ”and resin (binder ) 10 parts by mass of amorphous silica (average particle size: 2.5 / im) and 40 parts by mass of monodisperse acrylic beads (made by Nippon Shokubai Co., Ltd., particle size 9.5 ⁇ )
- a composition 6 for an antiglare layer having the following composition was prepared so that ⁇ and refractive index 1.53).
- UV curable resin pentaerythritol tritalylate ( ⁇ ) (refractive index 1.51) manufactured by Nippon Kayaku Co., Ltd. 3.58 parts by mass of DPHA, UV curable resin ( Nippon Kayaku Co., Ltd., refractive index 1.51), acrylic polymer 1.02 parts by mass (The Ink Tech, trade name: “HRAG acrylic” molecular weight 75,000), cellulose polymer (cellulose propionate) ) 2.64 parts by mass (trade name: “CAP_10V” manufactured by Dainichi Seika), 1.94 parts by weight (manufactured by Ciba-Gaigi Co., Ltd.) of Irgacure 184, a photocuring initiator, 0.111 parts by weight of certain Irgacure 907 (manufactured by Ciba Gaigi Co., Ltd.) and 10.37 parts by weight of monodisperse acrylic beads as translucent fine particles (manufactured by Nippon Shokubai Co., Ltd.
- UV curable resin pentaerythritol tritalylate PETA
- UV curable resin DPHA Nippon Kayaku Co., Ltd., refractive index 1.51
- acrylic polymer Mitsubishi Rayon, molecular weight 75,000
- photocuring initiator Irgacure 184 1.55 1 part by mass (Ciba Geigy Co., Ltd.)
- 0.26 parts by mass of Irgacure 907 a photocuring initiator
- a Geigy Co., Ltd. a Geigy Co., Ltd.
- 9.03 mass of monodisperse acrylic beads as the first translucent fine particles Part manufactured by Nippon Shokubai Co., Ltd., particle size 7.
- Silica-containing coating composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40_77 (ZZ_15M)” (average particle size of amorphous silica: 2.5 zm))
- resin binder
- amorphous silica average particle size: 2.5 zm
- monodisperse acrylic beads are 30 parts by mass (made by Nippon Shokubai Co., Ltd., particle size 9.5 xm) , Refractive index 1.53), and 10 parts by mass of melamine formaldehyde condensate fine particles (manufactured by Nippon Shokubai Co., Ltd., particle size 1.8 xm, refractive index 1.68)
- An antiglare layer composition 8 was prepared.
- Pentaerythritol triatalylate (PETA), a UV curable resin, is 25. 03 quality Parts (Nippon Kayaku Co., Ltd., refractive index 1.51), UV curable resin DPHA 4.80 parts by mass (Nihon Kayaku Co., Ltd., refractive index 1.51), acrylic polymer 1. 37 parts by mass (The Inc.
- Amorphous silica-containing coating composition manufactured by Dainichi Seiki Co., Ltd., trade name: “EXG40-77 (Z—15 M)” (average particle diameter of amorphous silica: 2.5 / m)
- 3. 3g, 1.5g of UV curable resin composition manufactured by Dainichi Seika Co., Ltd., trade name: "£ 040-77 (3-2)"
- 0.03g of silicon leveling agent 1 0-28 Manufactured by The Inktech Co., Ltd.
- 3.3 g of toluene, and 1 lg of MIBK were mixed thoroughly to prepare a coating solution.
- This coating solution was filtered through a polypropylene filter having a pore size of 80 ⁇ m to prepare composition 9 for an antiglare layer.
- amorphous silica-containing coating composition (trade name; “EXG40 _ 77 (D _ 30 M)” (average particle diameter of amorphous silica: 1.5 zm) manufactured by Dainichi Seiki Co., Ltd.)
- UV curing resin composition manufactured by Dainichi Seika Co., Ltd., trade name: “EXG40_ 77 (S _ 2)”
- silicone leveling agent 1 0—28 0.03 g
- Tonoleen 3.3g the Manufactured by Inktec Co., Ltd.
- MIBK 1.2g The mixture was mixed to prepare a coating solution. It was prepared antiglare layer composition 10
- the coating liquid was filtered through a polypropylene filters having a pore size of 80 beta m.
- composition 11 for an antiglare layer.
- UV curable resin pentaerythritol triatalylate PETA
- PETA pentaerythritol triatalylate
- DPHA DPHA UV curable resin
- acrylic polymer Mitsubishi Rayon, molecular weight 75,000
- photopolymerization initiator Irgacure 184 2.10 parts by weight
- Ciba Geigy Co., Ltd. photopolymerization initiator Irgacure 907, 0 ⁇ 251 parts by mass
- Caba Geigy Co., Ltd. 5.66 parts by mass of monodisperse acrylic beads as translucent fine particles (Corporation) Made by Nippon Shokubai, particle size 3.5 xm, refractive index 1.535), monodisperse styrene beads 4.19 parts by mass (Soken Chemicals SX350H, particle size 3.5
- Amorphous silica matte dispersion ink EXG40—77 (D—30M) (Amorphous silica resin (PETE) dispersion with average particle size of 1.5 / im: manufactured by Dainichi Seika)
- PETE polymer tyrene resin
- the total amount of resin is 100 parts by mass
- 40 parts by mass of monodisperse acrylic beads made by Nippon Shokubai Co., Ltd., particle size: 5.
- ⁇ ⁇ ⁇ ⁇ , refractive index: 1.535 as translucent fine particles
- the composition for antiglare layer 15 was prepared by adjusting the amorphous silica to 8.0 parts by mass.
- Amorphous silica matte dispersion ink EXG40—77 (D—30M) (Amorphous silica resin (PETE) dispersion with average particle size of 1.5 / im: manufactured by Dainichi Seika)
- PETE poly(ethylene glycol)
- monodisperse acrylic beads made by Nippon Shokubai Co., Ltd., particle size 5.0 xm, refractive index 1.535
- the composition for antiglare layer 15 was prepared so that the amorphous silica was 8.0 parts by mass.
- amorphous silica matting agent dispersion sink £ 040_ 77 (0_ 301 ⁇ ) (average particle size of 1.5 ⁇ m amorphous silica resin (PETE) dispersion: manufactured by Dainichi Seika) resin
- PETE amorphous silica resin
- monodisperse acrylic beads made by Nippon Shokubai Co., Ltd., particle size 5.
- ⁇ ⁇ ⁇ , refractive index 1.535 as translucent fine particles are 4 parts by mass.
- An antiglare layer composition 16 was prepared by adjusting the regular silica to be in parts by mass.
- C-4456 S-7 (ATO-containing conductive ink, ATO average particle size 300 to 400 nm, solid content 45% made by Nippon Pernox Co., Ltd.) 21 ⁇ 6g, and UV curable resin DPHA 28.69g (Nippon Kayaku Co., Ltd., refractive index 1.51), photocuring initiator Irgacure 184 1 ⁇ 56g (Ciba Geigy Co., Ltd.), MIBK (methyl isobutyl ketone) 33 ⁇ 7 g and 14.4 g of cyclohexanone were mixed thoroughly to prepare a coating solution. It was prepared surface adjustment advice service composition II This coating liquid was filtered through a polypropylene filter having a pore size of 30 beta m.
- Fluorine resin-based low-reflective coating composition 34 14g CFSR Co., Ltd., trade name: ⁇ 08 6 "), photopolymerization initiator QSR Co., Ltd. (Trade name; “JUA701”) 0 ⁇ 85 g and MIBK65 g were added, and after stirring, the mixture was filtered through a polypropylene filter having a pore size of 10 ⁇ to prepare a composition for a low refractive index layer. After stirring the components in the composition table below, the mixture was filtered through a polypropylene filter having a pore size of 10 ⁇ m to prepare composition 2 for a low refractive index layer.
- Irgacure 907 (manufactured by Ciba Specialty Chemicals) 0.1 parts by weight Polyether-modified silicone oil TSF4460 0.15 parts by weight
- the material of the antistatic layer is C-4456 S_7 (conducting ink containing AT ⁇ , average particle size of ATO 300 ⁇ 400nm, solid content 45% Nippon Pernox Co., Ltd.) 2 ⁇ 0g, methyl isobutino ketone 2 ⁇ 84g, cyclohexanone 1 ⁇ 22g with calories, after holding?
- the mixture was filtered through a polypropylene filter having a diameter of 30 / im to prepare an antistatic layer composition.
- Each optical laminate was manufactured as follows. The formation of feJ,
- the surface conditioning layer composition I After applying the surface conditioning layer composition I on the antiglare layer using a coating wire rod (Meyer's bar), heat drying in an oven at 70 ° C for 1 minute to evaporate the solvent. Under a nitrogen purge (oxygen concentration of 200 ppm or less), the coating was cured by irradiating with ultraviolet rays at an irradiation dose of lOOmJ to form a surface adjustment layer having a thickness of 3 ⁇ m.
- the anti-glare layer When forming the anti-glare layer, except that the anti-glare layer composition 2 was used, the anti-glare layer was applied in the same manner as in Example 1, and the surface adjustment layer I was further applied in the same manner. A laminate was obtained.
- the translucent fine particles in the coating composition for forming an antiglare layer are composed of monodisperse acrylic beads having an average particle diameter of 5. 5. ⁇ and amorphous silica (average particle diameter of 1.5 zm) as in Example 1.
- a mixed particle system was used, and the amount of the first light-transmitting fine particles added was 2Z3 in Example 1.
- the thickness of the surface adjustment layer was adjusted to 3. O zm.
- Example 1 Except for using the antiglare layer composition 3 when forming the antiglare layer, it was the same as in Example 1. Then, an antiglare layer was applied, and surface adjustment layer I was applied in the same manner to obtain an optical laminate.
- the first light-transmitting fine particles in the coating composition for forming an antiglare layer 7.0 / m monodisperse acrylic beads were used, and in the second light-transmitting fine particles, the average particle diameter was 2.5 ⁇ . It was prepared to be the same as the coating composition for forming the antiglare layer in Example 1 except that the regular silica was used, and the film thickness of the surface adjustment layer was 4. Ozm.
- the antiglare layer was formed, except that the antiglare layer composition 4 was used, the antiglare layer was applied in the same manner as in Example 1, and the surface adjustment layer I was further applied in the same manner.
- a laminate was obtained.
- the first light-transmitting fine particles in the coating composition for forming an antiglare layer 7.
- Ozm monodisperse acrylic beads are used, and in the second light-transmitting fine particles, an amorphous silica having an average particle size of 2.5 xm.
- the coating composition for antiglare layer formation in Example 2 was prepared except that was used, and the film thickness of the surface adjustment layer was 4. Ozm.
- the antiglare layer was formed, except that the antiglare layer composition 5 was used, the antiglare layer was applied in the same manner as in Example 1, and the surface adjustment layer I was further applied in the same manner. A laminate was obtained.
- the first light-transmitting fine particles in the coating composition for forming an antiglare layer 9.5 / m monodisperse acrylic beads were used, and in the second light-transmitting fine particles, the average particle diameter was 2.5 ⁇ . Except for using regular silica, it was prepared to be the same as the antiglare layer-forming coating composition of Example 1, and the film thickness of the surface adjustment layer was 4.0 / m.
- the translucent fine particles in the coating composition for forming an antiglare layer are composed of monodisperse acrylic beads having an average particle diameter of 9.5 ⁇ and amorphous silica (average particle diameter of 2.5 zm) as in Example 5.
- the first translucent fine particles and the second translucent fine particles were prepared so that the addition amount would be 4/3 of the weight ratio of Example 1, and the thickness of the surface adjustment layer was 4. O xm.
- the antiglare layer composition 7 when forming the antiglare layer was the same as in Example 1. Then, an antiglare layer was applied, and a surface adjustment layer was similarly applied to obtain an optical laminate.
- the first light-transmitting fine particles in the coating composition for forming the antiglare layer use monodisperse acrylic beads of ⁇ , and the second light-transmitting fine particles have a monodisperse of 2.0 / m. Acrylic beads were used.
- the antiglare layer When forming the antiglare layer, the antiglare layer was used in the same manner as in Example 1 except that the surface adjustment layer composition ⁇ was used when producing the surface adjustment layer using the antiglare layer composition 3. In addition, a surface adjustment layer was similarly applied to obtain an optical laminate. As the coating material for forming the surface adjustment layer, an ATO-containing composition was used in order to form a conductive surface adjustment layer.
- the anti-glare layer composition 3 was applied onto the antistatic layer using a coating rod (Meyer's bar) and dried in a 70 ° C oven for 1 minute to evaporate the solvent. Then, under a nitrogen purge (oxygen concentration of 200 ppm or less), the coating was cured by irradiating with ultraviolet rays so that the irradiation dose was 30 mJ, and an antiglare layer was formed.
- the surface conditioning layer composition I was applied using a coating wire rod (Meyer's bar) and dried in a 70 ° C oven for 1 minute to evaporate the solvent. Then, under a nitrogen purge (oxygen concentration of 200 ppm or less), ultraviolet rays were irradiated so that the irradiation dose was lOOmJ to cure the coating film, and a surface adjustment layer with a thickness of 3 zm was formed to obtain an optical laminate. It was.
- Example 10 An antiglare layer was prepared in the same manner as in Example 1 except that the antiglare layer composition 3 was used when forming the antiglare layer. Further, the surface adjustment layer composition I was used in the same manner as in Example 1 except that the coating film was cured by irradiating with ultraviolet rays so that the irradiation dose was 3 OmJ. An adjustment layer was formed.
- composition for low refractive index layer on the anti-glare layer using a coating rod (Meyer's bar) for coating, heat drying in an oven at 50 ° C for 1 minute to evaporate the solvent.
- a nitrogen purge oxygen concentration of 200 ppm or less
- ultraviolet rays were irradiated to a dose of 150 mJ to cure the coating film, and a low refractive index layer having a thickness of 98 nm was formed to obtain an optical laminate. .
- a surface adjustment layer composition was prepared in the same manner as in Example 10 except that a surface adjustment layer was formed, and a low refractive index layer was formed thereon to obtain an optical laminate.
- Example 11 a zirconia-containing resin matrix was used as the surface adjustment layer, and the surface adjustment layer was prepared so that the refractive index was 1.60.
- the reflection Y value was lower than that of the optical laminate of Example 10, and a good antireflection optical laminate could be obtained.
- An anti-glare layer was applied in the same manner as in Example 1 except that the anti-glare layer composition 8 was used, and then the surface adjustment layer I was similarly applied to obtain an optical laminate.
- the first light-transmitting fine particles in the coating composition for forming an antiglare layer 7.0 / m monodisperse acrylic beads are used, and in the second light-transmitting fine particles, the average particle diameter is 2.5 ⁇ .
- amorphous silica the same as the composition for the antiglare layer in Example 1 except that the melamine 'formaldehyde condensate of 1.8 zm was used in the third translucent fine particles.
- the thickness of the surface adjustment layer was adjusted to 4. Ozm.
- An anti-glare layer was applied in the same manner as in Example 1 except that the anti-glare layer composition 11 was used, and further, the surface adjustment layer I was similarly applied to obtain an optical laminate.
- the translucent fine particles the same monodisperse acrylic beads as in Example 1 are used, and the second translucent fine particles are used.
- monodisperse styrene acrylic beads with a refractive index difference of 0.44 from the binder resin, an optical layered body that produces internal scattering and prevents mengilla even in high-definition panels was obtained.
- An anti-glare layer was applied in the same manner as in Example 1 except that the anti-glare layer composition 12 was used, and further, the surface adjustment layer I was similarly applied to obtain an optical laminate.
- monodisperse styrene acrylic beads having a refractive index difference of 0.09 from the binder resin are used.
- An anti-glare layer was applied in the same manner as in Example 1 except that the anti-glare layer composition 13 was used, and then the surface adjustment layer I was applied in the same manner to obtain an optical laminate.
- monodisperse styrene acrylic beads having a refractive index difference of 0.055 from the binder resin are used.
- antiglare layer composition 16 using a coating rod (Meyer's bar) Apply, dry in a 70 ° C oven for 1 minute to evaporate the solvent, and then irradiate with UV light at an oxygen dose of lOOmJ under a nitrogen purge (oxygen concentration 200 ppm or less). The film was cured to form an antiglare hard coat layer with a thickness of 3 ⁇ m, and an AG1 optical laminate was obtained.
- Comparative Example 2 is also an antiglare optical product using amorphous silica. It is a layered body (AG).
- An optical laminate was obtained by applying the antiglare layer in the same manner as in Example 1 except that the composition 14 for antiglare layer was used, and further applying the surface adjustment layer I in the same manner.
- the resulting anti-glare optical laminate was inferior in jet blackness and anti-glare properties, both ⁇ & and ⁇ being small.
- An optical laminate was obtained in the same manner as in Example 1 except that the antiglare layer composition 15 was used, and an antiglare layer was applied, and in addition, the surface adjustment layer I was similarly applied.
- the resulting anti-glare optical laminate had a large display screen with both ⁇ & and ⁇ appearing whitened, lacking jetness, and had no effect on preventing mengilla.
- An optical laminate was obtained in the same manner as in Example 1 except that the antiglare layer composition 16 was used, and an antiglare layer was applied, and in addition, the surface adjustment layer I was applied in the same manner.
- the resulting antiglare optical layered product was inferior in jet blackness and antiglare properties in both 6a and ⁇ .
- Evaluation ⁇ Although black like black could be reproduced slightly, it was not sufficient as a product.
- Evaluation X The power that cannot reproduce black like black.
- Evaluation 3 Glitter test A black matrix pattern plate (105ppi, 140ppi) formed on a 0.7mm-thick glass is placed on a HAKUBA visual (light visual 7000PRO) with the pattern side down, and the resulting optical stack is obtained. The body film was placed with the concavo-convex surface on the air side, and the glare was visually observed and evaluated in a dark room while lightly pressing the edge of the film with a finger so that the film did not float.
- HAKUBA visual light visual 7000PRO
- Evaluation A Good at 140ppi with no glare.
- Evaluation X The edge was reflected and the antiglare property was poor.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Priority Applications (4)
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KR1020077021710A KR101198387B1 (ko) | 2005-02-21 | 2006-02-21 | 눈부심 방지성 광학 적층체 |
CN2006800132292A CN101163993B (zh) | 2005-02-21 | 2006-02-21 | 防眩性光学层合体 |
JP2007503787A JPWO2006088205A1 (ja) | 2005-02-21 | 2006-02-21 | 防眩性光学積層体 |
US11/884,378 US7661832B2 (en) | 2005-02-21 | 2006-02-21 | Anti-glare optical multilayer body |
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JP2005044231 | 2005-02-21 | ||
JP2005-044231 | 2005-02-21 | ||
JP2005099229 | 2005-03-30 | ||
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US (1) | US7661832B2 (ja) |
JP (3) | JPWO2006088205A1 (ja) |
KR (1) | KR101198387B1 (ja) |
TW (1) | TWI406770B (ja) |
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Publication number | Publication date |
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KR101198387B1 (ko) | 2012-11-07 |
US20090052043A1 (en) | 2009-02-26 |
TWI406770B (zh) | 2013-09-01 |
JPWO2006088205A1 (ja) | 2008-07-10 |
KR20070120502A (ko) | 2007-12-24 |
JP5846243B2 (ja) | 2016-01-20 |
JP2014194551A (ja) | 2014-10-09 |
US7661832B2 (en) | 2010-02-16 |
JP5823264B2 (ja) | 2015-11-25 |
TW200640684A (en) | 2006-12-01 |
JP2012108516A (ja) | 2012-06-07 |
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