CN106574991A - Anti-glare film and image display device - Google Patents

Anti-glare film and image display device Download PDF

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Publication number
CN106574991A
CN106574991A CN201580041849.6A CN201580041849A CN106574991A CN 106574991 A CN106574991 A CN 106574991A CN 201580041849 A CN201580041849 A CN 201580041849A CN 106574991 A CN106574991 A CN 106574991A
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CN
China
Prior art keywords
antiglare
antiglare layer
mentioned
particle
antiglare film
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Granted
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CN201580041849.6A
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Chinese (zh)
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CN106574991B (en
Inventor
南方雅之
岸敦史
足立贵之
仓本浩贵
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Nitto Denko Corp
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Nitto Denko Corp
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11Anti-reflection coatings
    • G02B1/111Anti-reflection coatings using layers comprising organic materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02Physical, chemical or physicochemical properties
    • B32B7/023Optical properties
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133502Antiglare, refractive index matching layers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/8791Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Abstract

This invention provides an anti-glare film that makes it possible to reduce sparkle without compromising anti-glare performance or transparency. Said anti-glare film comprises a transparent substrate and an anti-glare layer laid out on at least one surface of said transparent substrate. The surface of the/each anti-glare layer facing away from the transparent substrate is textured, with a mean clearance Sm between 150 and 350 [mu]m, a mean angle of inclination Theta a between 0.1 degree and 2.5 degrees, and an arithmetic mean roughness Ra between 0.05 and 0.5 [mu]m.

Description

Antiglare film and image display device
Technical field
The present invention relates to a kind of antiglare film and image display device.
Prior art
In the past, in image display device, in order to prevent by outer light reflection, as mirror etc. caused by contrast drop It is low, sometimes using antiglare film.In recent years, with the high-definition of image display device, following problem is produced:Produce by antiglare film Caused flicker (glittering;sparkling).Specifically, in the figure that former antiglare film is applied to high-resolution As in the case of display device, the brightness disproportionation in the presence of pixel is emphasised, so as to easily produce flicker.
Used as the technology for solving the above problems, proposition is improved the technology of the internal haze of antiglare film.However, with regard to the technology For, with the further high-definition for requiring in recent years, it is necessary to further improve internal haze, come from the viewpoint of the transparency The anxiety for being not suitable for practical application is seen.
In addition, for the rear side in antiglare film configures the image display device, such as of the composition of thicker glass etc. Require heat resistance vehicular applications image display device (display, instrument panel display device of such as auto navigation etc.) and Speech, the problem of above-mentioned flicker becomes more notable.
So, it is desirable to apply in the image display device of high-definition and heat resistance is required and be able to maintain that anti-glare Suppress with the transparency and further the antiglare film for flashing.
Prior art literature
Patent document
Patent document 1:Japanese Patent Laid-Open 2014-09456 publication
The content of the invention
Invent problem to be solved
The present invention is completed to solve above-mentioned problem, be its object is to provide and a kind of is being required high-definition and resistance to Also anti-glare and the transparency are able to maintain that in hot image display device and further suppress the antiglare film for flashing.
The technological means of solve problem
The antiglare film of the present invention possesses:Transparent base;It is anti-dazzle at least one face of the transparent base with being configured in Layer, wherein, the antiglare layer is male and fomale(M&F) with the surface of the transparent base opposite side, and the equispaced Sm of the male and fomale(M&F) is 150 μm~350 μm, the average slope angle θ a of the male and fomale(M&F) are 0.1 °~2.5 °, the arithmetic mean surface roughness of the male and fomale(M&F) Ra is 0.05 μm~0.5 μm.
In one embodiment, concavo-convex equispaced Sm, the average slope angle θ a and male and fomale(M&F) in above-mentioned male and fomale(M&F) Arithmetic mean surface roughness Ra show following relations:0≤Ra/Sm×θa×1000≤4.
In one embodiment, above-mentioned antiglare layer includes adhesive resin and particle, and the weight average particle diameter of the particle is 1 μm ~10 μm.
In one embodiment, the containing ratio of above-mentioned particle be relative to the weight portion of above-mentioned adhesive resin 100 be 1 Weight portion~9 weight portion.
In one embodiment, above-mentioned antiglare layer includes coherency filler.
In one embodiment, above-mentioned coherency filler is organic clay.
In one embodiment, the thickness of above-mentioned antiglare layer is 3 μm~15 μm.
In one embodiment, antiglare film of the invention is further equipped with intermediate layer, and the intermediate layer is formed in above-mentioned Between bright base material and above-mentioned antiglare layer and comprising constitute the transparent base material at least a portion and/or the adhesive tree At least a portion of fat, wherein, the thickness in the intermediate layer is 0.1%~123% relative to the thickness of the antiglare layer.
According to a further aspect in the invention, there is provided a kind of image display device.The image display device possesses above-mentioned anti-dazzle Film and image-display units, wherein, the antiglare film is 100 μm~700 μm with the gap of image-display units.
Invention effect
In accordance with the invention it is possible to provide a kind of antiglare film, it passes through possess the antiglare layer with male and fomale(M&F), and this is concavo-convex Face has specific equispaced Sm, average slope angle θ a and arithmetic mean surface roughness Ra, is able to maintain that anti-glare and thoroughly Bright property and further suppression flicker.Antiglare film particularly of the invention shows dress in the image for requiring high-definition and heat resistance It is particularly useful in putting.
Description of the drawings
Fig. 1 is the general profile chart of the antiglare film of an embodiment of the invention.
Fig. 2 is the general profile chart of the antiglare film of another embodiment of the invention.
Fig. 3 is the general profile chart of the image display device of an embodiment of the invention.
Specific embodiment
A. antiglare film
Fig. 1 is the general profile chart of the antiglare film of an embodiment of the invention.The antiglare film 100 possesses:Transparent base Material 10;With the antiglare layer 20 being configured at least one face of transparent base 10.Transparent base 10 is typically by resin film Constitute.Antiglare layer 30 is typically to apply antiglare layer formation on resin film to be formed with composition.Antiglare layer formation group Compound includes adhesive resin (or precursor of adhesive resin) and particle, is formed by such antiglare layer and is formed with composition Antiglare layer 30 includes adhesive resin and particle.Antiglare layer 20 is male and fomale(M&F) with the surface of the opposite side of transparent base 10, and And as described later like that with specific surface configuration.Furthermore, it is noted that, for the ease of observation, it is illustrated that in example relative to The concavo-convex size of the thickness of each layer is to be different from practically being recorded.Furthermore, although it is not shown, but antiglare film also can be Antiglare layer with the face of transparent base opposite side is further equipped with anti-reflecting layer.Anti-reflecting layer can pass through optional proper method To be formed.
Fig. 2 is the general profile chart of the antiglare film of another embodiment of the invention.Antiglare film 100' possesses:It is transparent Base material 10;With at least unilateral antiglare layer 30 for being configured in transparent base 10, wherein, between transparent base 10 and antiglare layer 30 It is formed with intermediate layer 1.As described above, transparent base 10 is made up of resin film.Antiglare layer 30 be typically Apply antiglare layer formation on resin film to be formed with composition.Antiglare layer formation with composition comprising adhesive resin (or bonding The precursor of agent resin) and particle, the antiglare layer 30 that formed with composition is formed by such antiglare layer comprising adhesive resin and Particle.Intermediate layer 1 is typically that antiglare layer formation composition infiltrates in above-mentioned resin film to be formed.On resin film Apply antiglare layer formation to be formed with composition during antiglare layer, the leachable formation to antiglare layer of material for constituting above-mentioned resin film is used In composition.The material dissolution that constitutes resin film like this and the part that formed also corresponds to intermediate layer 1.That is, intermediate layer 1 can At least a portion of contained adhesive resin at least a portion comprising the material for constituting transparent base 10 and antiglare layer 30. Intermediate layer 1 can also for contained adhesive resin compatible (mixing) in the material and antiglare layer 30 that constitute transparent base 10 shape Into layer.In addition, intermediate layer 1 is the layer contacted with both transparent base 10 and antiglare layer 20.
The thickness of above-mentioned antiglare film is preferably 15 μm~500 μm, more preferably 25 μm~300 μm, more preferably 30 μ M~100 μm.
B. antiglare layer
As described above, a surface of antiglare layer is male and fomale(M&F).The equispaced Sm of the male and fomale(M&F) is 150 μm~350 μm, Preferably 160 μm~300 μm, more preferably 180 μm~250 μm.
The average slope angle θ a of above-mentioned male and fomale(M&F) be 0.1 °~2.5 °, preferably 0.2 °~2.0 °, more preferably 0.3 °~ 1.5°。
Arithmetic mean surface roughness Ra of above-mentioned male and fomale(M&F) be 0.05 μm~0.5 μm, preferably 0.08 μm~0.3 μm, More preferably 0.1 μm~0.25 μm.
Furthermore, the equispaced Sm of male and fomale(M&F), average slope angle θ a, the definition of arithmetic surface roughness Ra are based on JIS B 0601 (version in 1994).In addition, these characteristic values can (such as little slope research be made using contact pin type surface roughness measurement device The high accuracy fine shape analyzer made, trade name " Surfcorder ET4000 ") being measured.Furthermore, average slope angle θ a are by θ a=tan-1The defined value of this formula of Δ a.Δ a by defined in JIS B 0601 (version in 1994) roughness (total (the h1+h2+h3+ ...+hn) of height h) is divided by thick for the difference of the minimum point of the summit of adjacent convex portion and recess in curve It is worth obtained from the datum length L of roughness curve, i.e. by Δ a=(h1+h2+h3+ ...+hn)/L, this formula is represented.
The antiglare film of the present invention is (the equispaced Sm of male and fomale(M&F), average with surface configuration as above by possessing Tiltangleθ a, arithmetic surface roughness Ra) antiglare layer, be able to maintain that excellent anti-glare and the transparency and suppress flicker. Above range is all set to especially by by equispaced Sm, average slope angle θ a and arithmetic surface roughness Ra, The back side of antiglare film configures thicker optical component (such as glass, polarizer, phase retardation film), to showing with image depending on recognizing face The image display device that the distance of unit (such as liquid crystal cells) is longer is also obtained in that flicker inhibition.The surface of antiglare layer Between the particle diameter of species, particle diameter and/or content, antiglare layer and particle that shape can for example pass through particle contained in antiglare layer Relation, the species of coherency filler (being hereinafter described) and/or content, the solid component concentration of antiglare layer formation composition etc. To be controlled by.
It is preferred that equispaced Sm (μm) of male and fomale(M&F), average slope angle θ a (°) and arithmetic surface roughness Ra (μm) show Go out 0≤Ra/Sm × this relation of θ a × 1000≤4, more preferably show 0.1≤Ra/Sm × this relation of θ a × 1000≤3, Further preferably show 0.15≤Ra/Sm × this relation of θ a × 1000≤2.By by equispaced Sm (μm), averagely incline The relation of bevel angle θ a (°) and arithmetic surface roughness Ra (μm) is set as above-mentioned specific relation, and the effect of the present invention becomes more Significantly.
The thickness of above-mentioned antiglare layer is preferably 3 μm~15 μm, more preferably 4 μm~13 μm, and more preferably 5 μm~12 μm.If such scope, then it is obtained in that (also referred to as visual, vision is distinguished for the visibility that is difficult to hinder image display device Recognizing property) antiglare film.In addition, by the combination with following particles, the good antiglare layer of concaveconvex shape can be made.
The mist degree of above-mentioned antiglare layer is preferably less than 40%, more preferably less than 35%, more preferably 10%~ 30%.In accordance with the invention it is possible to obtain following antiglare film:Without compromising on the transparency of antiglare layer, i.e. antiglare layer will not be made Mist degree rises, and with excellent anti-glare, and it is excellent to flash inhibition.Mist degree can be according to JIS K 7136 (version in 2000) To be determined.
The refractive index of above-mentioned adhesive resin is preferably 1.2~2.0, more preferably 1.3~1.9, more preferably 1.3 ~1.8, particularly preferably 1.4~1.7.If such scope, then because of the relation with the refractive index of particle (being hereinafter described), energy It is enough to form the antiglare layer with preferred outside mist degree.So-called " refractive index of adhesive resin " is referred in antiglare layer by adhesive The refractive index in the region that resin is constituted, equivalent to the refractive index for assuming antiglare layer when there is no particle.
Above-mentioned antiglare layer preferably comprises adhesive resin and particle.The antiglare layer is, for example, in the resin for constituting transparent base Antiglare layer formation composition is coated with film, makes said composition solidify to be formed afterwards.Antiglare layer formation composition can be wrapped Compound containing curability, above-mentioned particle etc..
Above-mentioned adhesive resin is derived from the resin of curability compound, as the resin, for example, can include:Heat cure Property resin, active energy ray-curable resin etc..
Preferably, above-mentioned antiglare layer formation composition is comprising polyfunctional monomer, from the oligomer of polyfunctional monomer And/or from polyfunctional monomer prepolymer as the curability compound for becoming principal component.As polyfunctional monomer, for example may be used Include polyfunctional acrylic ester system monomer.Specifically, can include:Tricyclodecane Dimethanol diacrylate, Ji Wusi Alcohol two (methyl) acrylate, pentaerythrite three (methyl) acrylate, trimethylolpropane trimethacrylate, pentaerythrite four (methyl) acrylate, dihydroxy methylpropane tetraacrylate, dipentaerythritol six (methyl) acrylate, 1,6-HD (methyl) acrylate, 1,9- nonanediol diacrylates, 1,10- decanediols (methyl) the acrylate, (first of polyethylene glycol two Base) acrylate, polypropylene glycol two (methyl) acrylate, propylene glycol diacrylate, cyamelide three (methyl) third Olefin(e) acid ester, ethoxylated glycerol triacrylate, ethoxylation tetramethylol methane tetraacrylate etc..Polyfunctional monomer can individually make With also multiple combination can be used.
Above-mentioned polyfunctional monomer can have hydroxyl.If formed using the antiglare layer comprising the polyfunctional monomer with hydroxyl using Composition, then can improve the adaptation of transparent base and antiglare layer.As the polyfunctional monomer with hydroxyl, for example, can enumerate Go out:Pentaerythrite three (methyl) acrylate, Dipentaerythritol Pentaacrylate etc..
With regard to containing for above-mentioned polyfunctional monomer, the oligomer from polyfunctional monomer and the prepolymer from polyfunctional monomer There is ratio, relative to the total amount of monomer, oligomer and prepolymer in antiglare layer formation composition, preferably 10 weight % ~100 weight %, more preferably 30 weight %~100 weight %, more preferably 40 weight %~95 weight %, it is especially excellent Elect 50 weight %~95 weight % as.
Above-mentioned antiglare layer formation composition also can further contain monofunctional monomer.As monofunctional monomer, for example may be used Include:Ethoxylation o-phenyl phenol (methyl) acrylate, methoxy poly (ethylene glycol) (methyl) acrylate, phenoxy group gather Ethylene glycol (methyl) acrylate, 2-EHA, lauryl acrylate, Isooctyl acrylate monomer, the different tristearin of acrylic acid Ester, cyclohexyl acrylate, acrylic acid isophorone ester, benzyl acrylate, acrylic acid 2- hydroxyl -3- benzene oxygen esters, acryloyl group Quinoline, (methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 4- hydroxybutyls, hydroxyethyl acrylamide etc..
Above-mentioned monofunctional monomer can have hydroxyl.As the monofunctional monomer with hydroxyl, for example, can include:(methyl) Acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 2- hydroxy propyl esters, (methyl) acrylic acid 4- hydroxybutyls, acrylic acid 2- hydroxyls- (methyl) acrylic acid hydroxy alkyl esters such as 3- benzene oxygen esters, 1,4- cyclohexane methanol mono acrylic esters;N- (2- ethoxys) (methyl) third N- (2- hydroxyalkyls) (methyl) acrylamide such as acrylamide, N- methylols (methyl) acrylamide etc..Wherein, preferably acrylic acid 4- hydroxybutyls, N- (2- ethoxys) acrylamide.
Above-mentioned antiglare layer formation composition also can be containing carbamate (methyl) acrylate and/or carbamate The oligomer of (methyl) acrylate.Carbamate (methyl) acrylate for example can by make (methyl) acrylic acid or by (methyl) acrylate is reacted to obtain with (methyl) crylic acid hydroxy ester that polyalcohol is obtained with diisocyanate.Ammonia The oligomer of carbamate (methyl) acrylate and carbamate (methyl) acrylate can be used alone, also can will be various It is applied in combination.
As above-mentioned (methyl) acrylate, for example, can include:(methyl) methyl acrylate, (methyl) acrylic acid second Ester, (methyl) isopropyl acrylate, (methyl) butyl acrylate, (methyl) cyclohexyl acrylate etc..
As above-mentioned polyalcohol, for example, can include:Ethylene glycol, 1,3- propane diols, 1,2- propane diols, diethylene glycol, two Propane diols, neopentyl glycol, 1,3 butylene glycol, 1,4- butanediols, 1,6-HD, 1,9- nonanediols, 1,10- decanediols, 2,2, 4- trimethyl -1,3- pentanediols, 3- methyl isophthalic acids, 5- pentanediols, hydroxy new pentane acid DOPCP, tristane dihydroxymethyl, 1,4- cyclohexanediols, spiral shell glycol, hydrogenated bisphenol A, ethyleneoxide addition bisphenol-A, expoxy propane addition bisphenol-A, trihydroxy methyl second Alkane, trimethylolpropane, glycerine, 3- methylpentane -1,3,5- triols, pentaerythrite, dipentaerythritol, tripentaerythritol, Portugal Grape carbohydrate etc..
As above-mentioned diisocyanate, for example, can use aromatic series, aliphatic or alicyclic various diisocyanates. As the specific example of above-mentioned diisocyanate, can include:Tetramethylene diisocyanate, hexamethylene diisocyanate, IPDI, 2,4 toluene diisocyanate, 4,4- diphenyl diisocyanates, 1,5- naphthalene diisocyanates, 3,3- dimethyl -4,4- diphenyl diisocyanates, XDI, trimethyl hexamethylene diisocyanate, 4, 4- methyl diphenylene diisocyanates and their hydride etc..
As described above, antiglare layer includes particle.By comprising the particle, anti-glare layer surface being made into male and fomale(M&F).Separately Outward, the haze value of antiglare layer can be controlled.As above-mentioned particle, for example, can include:Inorganic particulate, organic filler etc..As The specific example of inorganic particulate, for example, can include:Silicon oxide particle, Titanium particles, aluminium oxide particles, zinc oxide particles, Tin oxide particles, calcium carbonate particle, barium sulfate particles, talc particles, kaolin particle, sulfuric acid calcium particle etc..As organic grain The specific example of son, for example, can include:Plexiglass particle (PMMA particles), polyorganosiloxane resin grain Son, styrene resin beads, polycarbonate resin particle, acrylate styrene resin particle, benzoguanamine resin particle, Melmac particle, vistanex particle, polyester resin particle, polyamide particle, polyimide resin particle, Polyfluoroethylene resin particle etc..Above-mentioned particle can be used alone, and can also use multiple combination.
The weight average particle diameter of above-mentioned particle is preferably 1 μm~10 μm, more preferably 2 μm~7 μm.If such scope, then The anti-glare film for being obtained in that anti-glare is more excellent and being prevented from white blur.The weight average particle diameter of particle can pass through Kurt Counting method is being measured.Furthermore, in antiglare layer or in antiglare layer formation composition, above-mentioned particle can be with primary particle Form and/or primary particle cohesion form exist, in this manual, so-called " weight average particle diameter of particle " refers to nothing By particle shape how, the equal grain of weight that the particle in antiglare layer formation composition is measured by coulter counter method Footpath.
The ratio (thickness of the weight average particle diameter/antiglare layer of particle) of the thickness of above-mentioned antiglare layer and the weight average particle diameter of above-mentioned particle Preferably 0.3~0.9, more preferably 0.35~0.8.If such scope, then flicker inhibition can be formed bigger Antiglare layer.
Refractive index n1 of above-mentioned particle is preferably 1.1~1.9, more preferably 1.2~1.7.As with such refraction The particle of rate, for example, can include:Silicone particles, polystyrene particle, polymethyl methacrylate, styrene and methyl Acrylic acid copolymer etc..In addition, the difference of the refractive index (n2) of the refractive index (n1) of above-mentioned particle and above-mentioned adhesive resin (n1-n2) it is preferably less than 0.5, more preferably less than 0.3.In addition, the lower limit of (n1-n2) is preferably more than -0.9, more Preferably more than -0.8.If such scope, then the excellent antiglare film of the transparency is obtained in that.In addition, the folding of above-mentioned particle Penetrate rate (n1) be preferably 0.8~1.2, more preferably 0.9 relative to the ratio (n1/n2) of the refractive index (n2) of adhesive resin~ 1.1.If such scope, then the excellent antiglare film of the transparency and flicker inhibition is obtained in that.
The shape of above-mentioned particle is not particularly limited, for example can be substantially spherical for bead etc., or powder etc. Indefinite shape.Preferably aspect ratio is less than 1.5 substantially spherical particle, more preferably spherical particle.
In above-mentioned antiglare layer, the containing ratio of particle is to be preferably 0.2 weight relative to the weight portion of adhesive resin 100 Part~12 weight portions, more preferably 0.5 weight portion~12 weight portion, more preferably 1 weight portion~9 weight portion, it is especially excellent Elect 1 weight portion~7 weight portion as.If such scope, then it is obtained in that anti-glare is more excellent and is prevented from white mould The anti-glare film of paste.
In above-mentioned antiglare layer formation composition, above-mentioned particle is with being preferably favorable dispersibility (to condense less shape State) exist.The dispersiveness (degree of scatter) of particle is using scattered using Measurement of particle size distribution by laser diffraction, dynamic optical Penetrate particle size distribution that method, static light scattering method etc. carry out to be evaluated.In addition, can be by using SEM It is measured etc. the micro- sem observation for carrying out.
In the size distribution obtained by using Measurement of particle size distribution by laser diffraction to antiglare layer formation group In the case that the dispersiveness of the particle in compound is evaluated, D50(particle diameter during volume-cumulative 50%) and volume-cumulative particle diameter D90The absolute value of the difference of (particle diameter during volume-cumulative 90%) is preferably less than 5 μm, again more preferably less than 3 μm, further preferably It is that, less than 1 μm, particularly preferably 0 μm less than 1 μm.If such scope, then can be formed with appropriate surface The antiglare layer of shape.
In the size distribution obtained by using Measurement of particle size distribution by laser diffraction to antiglare layer formation group In the case that the dispersiveness of the particle in compound is evaluated, particle diameter is that 1 μm of containing ratio less than 5 μm of particle is 50 weight % are preferably more than relative to the total amount of the particle in said composition, it is more than more preferably 70 weight %, further excellent Elect 80 weight %~100 weight % as.If such scope, then the antiglare layer with appropriate surface configuration can be formed.
Above-mentioned antiglare layer formation composition can further contain coherency filler.That is, above-mentioned antiglare layer can further contain There is coherency filler.Condensed by making coherency filler, can body more closely control the concaveconvex shape of anti-glare layer surface.More specifically For, by the state of aggregation for adjusting above-mentioned coherency filler, can be readily available the equispaced Sm with above range, The male and fomale(M&F) of average slope angle θ a and arithmetic surface roughness Ra.The state of aggregation of coherency filler can be according to the property of the filler (the chemical modification state on such as surface, the compatibility to adhesive resin, to solvent contained in antiglare layer formation composition Compatibility), antiglare layer formation is adjusted with species of solvent contained in composition etc..
As above-mentioned coherency filler, for example, can include:Organic clay, oxidized polyolefin, modified urea etc..Wherein, it is excellent Elect organic clay as.
As above-mentioned organic clay, for example, can include:Smectite, talcum, bentonite, montmorillonite, kaolinite etc..Its In, preferably smectite.Commercially available product can be also used as organic clay.As the organic clay of commercially available product, for example, can include: Trade name " Lucentite SAN ", trade name " Lucentite STN ", the trade name of Co-op Chemical companies manufacture " Lucentite SEN ", trade name " Lucentite SPN ", trade name " Somasif ME-100 ", trade name " Somasif MAE ", trade name " Somasif MTE ", trade name " Somasif MEE ", trade name " Somasif MPE ";Ho Jun company systems Trade name " S-BEN ", trade name " S-BEN C ", trade name " S-BEN E ", trade name " S-BEN W ", the trade name " S- for making BEN P ", trade name " S-BEN WX ", trade name " S-BEN N-400 ", trade name " S-BEN NX ", trade name " S-BEN NX80 ", trade name " S-BEN NO12S ", trade name " S-BEN NEZ ", trade name " S-BEN NO12 ", trade name " S-BEN NE ", trade name " S-BEN NZ ", trade name " S-BEN NZ70 ", trade name " Olga Knight ", trade name " Olga Knight D ", trade name " Olga Knight T ";Trade name " the Kunipia of KUNIMINE INDUSTRIES companies manufacture F ", trade name " Kunipia G ", trade name " Kunipia G4 ";The trade name of Rockwood Additives companies manufacture " Tixogel VZ ", trade name " CLAYTONE HT ", trade name " CLAYTONE 40 " etc..
As above-mentioned oxidized polyolefin, for example, can include:Trade name " the Disparlon of this chemical conversion of nanmu company manufacture 4200-20 ", trade name " FLOWNON SA300 " of chemical company of common prosperity society manufacture etc..
Above-mentioned modified urea is the reactant of isocyanate-monomer or its addition product and organic amine.As modified urea, for example may be used Include trade name " BYK410 " of BYK CHEMIE companies manufacture etc..
The containing ratio of above-mentioned coherency filler is to be preferably 0.2 weight relative to the weight portion of above-mentioned adhesive resin 100 Part~5 weight portions, more preferably 0.4 weight portion~4 weight portion.
Above-mentioned antiglare layer formation composition preferably comprises optional appropriate Photoepolymerizationinitiater initiater.Cause as photopolymerization Agent, for example, can include:2,2- dimethoxy -2- phenyl acetophenones, acetophenone, benzophenone, xanthone, 3- methylbenzene second Ketone, 4- chlorobenzophenones, 4,4'- dimethoxy-benzophenones, benzoin propyl ether, benzil dimethyl ketal, N, N, N', N'- Tetramethyl -4,4'- diaminobenzophenones, 1- (4- isopropyl phenyls) -2- hydroxy-2-methyl propane -1- ketone, thioxanthones system Compound etc..
Above-mentioned antiglare layer formation composition can be free of containing solvent.Above-mentioned antiglare layer formation composition is preferably wrapped Containing solvent.As solvent, for example, can include:The alcohols such as methyl alcohol, ethanol, isopropanol, butanol, 2-methyl cellosolve;Acetone, first The ketones such as ethyl ketone, methyl iso-butyl ketone (MIBK), cyclopentanone;The esters such as methyl acetate, ethyl acetate, butyl acetate;Diisopropyl ether, the third two The ethers such as alcohol monomethyl ether;The glycols such as ethylene glycol, propane diols;The dioxanes such as ethyl cellosolve, butyl cellosolve;Hexane, heptan The aliphatic hydrocarbons such as alkane, octane;Benzene,toluene,xylene etc. is aromatic hydrocarbon etc..These solvents are used alone, also can will be various It is applied in combination.In the case of using the antiglare layer formation composition comprising above-mentioned organic clay, toluene, ring penta are preferably used Ketone and/or dimethylbenzene are used as solvent.
In one embodiment, as above-mentioned solvent, the mixed solvent comprising cyclopentanone and/or MEK can be used (such as mixed solvent, the mixed solvent comprising MEK and toluene comprising cyclopentanone and toluene).If using such mixing Solvent, then can adjust the thickness in intermediate layer according to the containing ratio of cyclopentanone or MEK.Cyclopentanone in mixed solvent or The containing ratio of MEK is to be preferably 1 weight %~50 weight % relative to mixed solvent total amount, more preferably 3 weight %~ 50 weight %.The more preferably mixed solvent of cyclopentanone and toluene, the containing ratio that cyclopentanone can be used be 1 weight %~ The mixed solvent of 50 weight %.If using the antiglare layer formation composition comprising such mixed solvent, can be suitable As the intermediate layer that preferred thickness is formed on the resin film (such as tri acetyl cellulose membrane) of the transparent base of antiglare film and Form antiglare layer.
In one embodiment, SP (solubility parameter) value of above-mentioned solvent is preferably 7~12 (cal/cm3)1/2, more Preferably 8~11 (cal/cm3)1/2.If such scope, then can suitably as antiglare film transparent base resin The intermediate layer of preferred thickness is formed on film (such as tri acetyl cellulose membrane) and antiglare layer is formed.Furthermore, SP values are to pass through The solubility parameter that Small formulas are calculated.The calculating of SP values can pass through known document (such as Journal of Applied Chemistry, 3,71,1953. etc.) described method is carrying out in.In addition, in the case where solvent is mixed solvent, should The SP values of mixed solvent can be calculated based on the mole fraction of each solvent for constituting mixed solvent.
The solid component concentration of above-mentioned antiglare layer formation composition is preferably 20 weight %~80 weight %, more preferably 25 weight %~60 weight %, more preferably 30 weight %~50 weight %.If such scope, then can be easily Obtain the male and fomale(M&F) of equispaced Sm, average slope angle θ a and arithmetic surface roughness Ra with above range.
Above-mentioned antiglare layer formation composition can further contain optional suitable additives.As additive, for example may be used Include:Even paint, antiblocking agent, dispersion stabilizer, thixotropic agent, antioxidant, ultra-violet absorber, defoamer, thickener, Dispersant, surfactant, catalyst, lubricant, antistatic additive etc..
Above-mentioned antiglare layer can by make after above-mentioned antiglare layer formation is coated into transparent base with composition its solidification come Obtain.As the coating process of antiglare layer formation composition, optional proper method can be adopted.For example can include:Coiling Rod coating method, rolling method, gravure coating process, rod-type rubbing method, slot apertures formula rubbing method, curtain method, spray rubbing method, lack Horn ring rubbing method.
Furthermore, in one embodiment, after above-mentioned antiglare layer formation composition is coated into transparent base, entering Before row solidification (or in curing process), tilt or rotate the transparent base for being formed with coating layer.In antiglare layer formation combination Comprising in the case of coherency filler in thing, by carrying out such operation, the mutual contact of coherency filler can be promoted, so as to Coherency filler is set suitably to condense (shearing cohesion).For example, by adjusting inclination angle or rotation during above-mentioned tilting or rotating Speed, can control the state of aggregation of coherency filler.
As the curing of above-mentioned antiglare layer formation composition, optional appropriate curing process can be adopted.At solidification Reason is carried out by ultraviolet irradiation.The accumulative light quantity of ultraviolet irradiation is preferably 50mJ/cm2~500mJ/ cm2
C. transparent base
Above-mentioned transparent base can be formed by resin film.Used as above-mentioned transparent base (resin film), it is optional appropriate to use Base material (resin film), as long as having visible light permeability.As the material for constituting above-mentioned transparent base (resin film), for example Can include:Triacetyl cellulose (TAC), Merlon, acrylic ester polymer, cyclic polyolefin, with ENB Polyolefin, PET of structure etc..
The thickness of above-mentioned transparent base is preferably 10 μm~500 μm, more preferably 20 μm~300 μm, more preferably 30 μm~100 μm.Furthermore, in the case of not forming intermediate layer in antiglare film, the thickness of transparent base is equivalent to above-mentioned resin The thickness of film.In addition, in the case of being formed with intermediate layer in antiglare film, the thickness of transparent base is equivalent in above-mentioned resin film The part for not forming intermediate layer thickness.
The SP values for constituting the resin of above-mentioned resin film are preferably 10 (cal/cm3)1/2More than, more preferably 15 (cal/cm3 )1/2More than, more preferably 20 (cal/cm3)1/2More than.If such scope, then the centre of suitable thickness can be formed Layer.The upper limit of the SP values of above-mentioned resin is, for example, 30 (cal/cm3)1/2Hereinafter, preferably 28 (cal/cm3)1/2Hereinafter, more preferably For 25 (cal/cm3)1/2Below.In one embodiment, the SP values of solvent contained in above-mentioned antiglare layer formation composition And the difference (resin SP values-solvent SP values) for constituting the SP values of the resin of above-mentioned resin film is preferably -10~20 (cal/cm3)1/2, More preferably 5~20 (cal/cm3)1/2, it is 10~15 (cal/cm3)1/2
The refractive index of above-mentioned transparent base is preferably 1.30~1.80.
D. intermediate layer
As described above, can also be formed with intermediate layer between transparent base and antiglare layer.
((thickness a) in Fig. 2 is preferably relative to the thickness of the antiglare layer for the thickness b) in Fig. 2 for the thickness in above-mentioned intermediate layer For 0.1%~123%.The thickness in intermediate layer is preferably 1%, more preferably 3% with the lower limit of the ratio of the thickness of above-mentioned antiglare layer. In addition, the thickness in intermediate layer is preferably 100%, more preferably 85% with the upper limit of the ratio of the thickness of above-mentioned antiglare layer, further Preferably 65%.Furthermore, the thickness of intermediate layer, antiglare layer and transparent base can ((transmitted electron shows such as TEM using microscope Micro mirror)) section of observation antiglare film, determine the interface of intermediate layer and resin bed and bond layer to be measured.Interface It is determined that can also use the analytic approach (such as time-of-flight type secondary ion mass spectrometry) of regulation.
In the present invention, by being controlled to above-mentioned ratio so that the thickness in the above-mentioned intermediate layer formed when antiglare layer is formed Degree will not become blocked up, be obtained in that the higher antiglare film of flicker inhibition.Even if the antiglare film of the present invention is applied to high definition Clear image display device, it is also possible to show excellent flicker inhibition.Even if in addition, the antiglare film of the present invention make it is anti-dazzle The internal haze of layer is smaller, is not easy to produce flicker, therefore the transparency is excellent.Further, by the way that the thickness in intermediate layer is relative It is less than 123% in the ratio set of the thickness of antiglare layer, the antiglare layer of excellent scratch resistance can be formed.
In addition, by relative to the ratio set of the thickness of antiglare layer being more than 3% (more preferably by the thickness in intermediate layer More than 10%) during, above-mentioned particle dispersibility is present in antiglare layer (to condense less state) well, as a result, energy It is enough to obtain the antiglare film that suppress to flash.
The thickness in above-mentioned intermediate layer is preferably 0.1 μm~30 μm, more preferably 0.3 μm~20 μm, more preferably 1 μm ~10 μm, particularly preferably 1.5 μm~5 μm.
E. image display device
Fig. 3 is the diagrammatic sectional view of a part (depending on recognizing side) for the image display device for representing an embodiment of the invention Figure.Image display device 200 possesses antiglare film 100 and image-display units 30.It is preferred that antiglare film 100 is made at transparent base 10 Configured in the side of image-display units 30.It is optional appropriate to can configure between antiglare film 100 and image-display units 30 Optical component A, and the gap X of regulation is formed between antiglare layer 10 and image-display units 30.As optical component A, example Such as can include:Glass substrate, polarizer, phase retardation film, bond layer, adhesive phase etc..Show in antiglare film 100 and image Between unit 30, single optical component is can configure, can also be configured multiple, various optical components.
As above-mentioned image-display units, optional appropriate image-display units can be used.For example, show in above-mentioned image Device is liquid crystal cells in the case of liquid crystal indicator equivalent to image-display units, aobvious in organic EL (electroluminescent) image In the case of showing device, organic el element is equivalent to image-display units.Liquid crystal cells typically have a pair of substrates and match somebody with somebody Put the liquid crystal layer as display medium between the substrate.
Antiglare layer in antiglare film is preferably 100 μm~700 μm with the gap X of image-display units.If it is thick to possess comparison Glass substrate, and gap X be more than 100 μm, then be obtained in that the image display device of heat resistance and excellent strength.Gap The lower limit of X is more preferably more than 150 μm.By thickening glass substrate, the effect that heat resistance and intensity are improved becomes notable.This Bright antiglare film due to also can suppress in the case where gap X is larger flicker, if thus using the antiglare film, can be same Shi Shixian improves heat resistance and intensity and suppresses flicker.Furthermore, it is stipulated that the optical component of gap X is not limited to glass substrate, can The optional appropriate component of configuration.It is possible to increase this effect of gap X is not limited to improve heat resistance and intensity, according to this Invention, it is also possible to provide a kind of due to the less thus higher image display device of design freedom of restriction of thickness.The opposing party Face, if gap X is less than 700 μm, is obtained in that the less image display device of flicker.The upper limit of gap X is more preferably 650 Below μm.If gap X is less than 650 μm, the less image display device of flicker is obtained in that.Furthermore, in so-called antiglare film The gap X of antiglare layer and image-display units refer to that the back side (face of image-display units side) of antiglare layer and image show single Unit depending on recognizing distance formed by side (face of antiglare film side).Therefore, gap X shows equivalent to antiglare film 100 is configured in image Show the total thickness (such as aggregate thickness of polarizer, glass substrate and/or adhesive phase) of the optical component A between unit 30 and prevent The aggregate thickness of the transparent base (being transparent base and intermediate layer in the case where intermediate layer is formed with) in dizzy film.In addition, Image-display units be liquid crystal cells in the case of, the liquid crystal cells possess depending on recognize side base plate depending on recognizing side and antiglare layer The back side distance be above-mentioned gap X.
More specifically, antiglare film of the invention may be suitably used to possess the thick glass substrate of comparison that (for example thickness is 100 μm~700 μm of glass substrate) image display device.In the past, purposes (such as vehicle of heat resistance, intensity etc. was being required Purposes) in, improve heat resistance by thickening glass substrate.However, present inventors have discovered that:With plus heavy sheet glass base Plate, i.e. with above-mentioned gap X is thickeied, produced flicker in the case of using antiglare film increases.That is, of the invention is anti-dazzle Film is the invention that can solve the problem, and it may be suitably used to the image display device of vehicular applications.In addition, using the present invention's The effect of antiglare film becomes more notable to the image display device of high-resolution.
Above-mentioned image display device can further contain optional appropriate component.For example can further contain and be arranged on image Polarizer, blooming, back lighting device of the rear side of display unit etc..
Embodiment
Hereinafter, the present invention is specifically described by embodiment, but the present invention is not limited to these embodiments.
Furthermore, the weight average particle diameter of particle is measured by coulter counter method.Specifically, for antiglare layer shape Into with composition, using the particle size distribution device (manufacture of Beckman Coulter companies, the business that make use of pore electric-resistivity method The name of an article " Coulter Multisizer "), resistance of the particle by the electrolyte of the volume equivalent to particle during pore is determined, Thus the quantity and volume of particle are determined, so as to calculate weight average particle diameter.
In addition, particle " | D90- D50| " refer to " Microtrac UPA (types manufactured by using Liao Jizhuan companies Number) " Measurement of particle size distribution by laser diffraction and the D that obtains50(particle diameter during volume-cumulative 50%) and volume-cumulative Particle diameter D90The absolute value of the difference of (particle diameter during volume-cumulative 90%).
In addition, the thickness of each layer be using light microscope (KEYENCE companies manufacture, trade name " VHX-700F ") or TEM (Hitachi companies manufacture, trade name " H-7650 ") observes section to be measured.Seen using light microscope When examining, the antiglare film carried out after resin embedding is cut by slicer, so as to make observation sample.In addition, utilizing TEM When being observed, by dyeing the ultrathin sectioning for processing including heavy metal sample is made.
In addition, refractive index is determined by such a way:Abbe refractomecer (the business manufactured using ATAGO companies The name of an article:DR-M2/1550), a bromonaphthalene is selected as middle interstitial fluid, the incident measure light of aspect of measure to measure object, by above-mentioned dress The assay method of the regulation shown in putting is measured.
[embodiment 1]
Using used as the pentaerythritol triacrylate of adhesive resin, (Osaka organic chemistry company manufactures, trade name " Viscoat#300 ") (chemical industrial company of Xin Zhong villages manufactures, commodity for 50 weight portions and urethane acrylate prepolymer Name " UA-53H-80BK ") 50 weight portions, Silicone particles (step the manufacture of Co., Ltd of figure new high-tech material Japan, trade name " TOSPEARL 130 ", weight average particle diameter:3 μm, | D90- D50|:2.5 μm, refractive index:1.42) 3.5 weight portions, as organic viscous Synthesis smectite (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") 2 weight portions of soil, photopolymerization are drawn Send out agent (BASF AG manufactures, trade name " Irgacure 907 ") 3 weight portions and even paint (manufacture of DIC companies, trade name " PC4100 ", solid constituent is 10%) 0.2 weight portion mixing, and (weight ratio is using toluene/cyclopentanone (CPN) mixed solvent 70/30) it is diluted, so as to prepare the antiglare layer formation composition that solid component concentration is 33 weight %.Furthermore, it is organic viscous Soil is to be changed into being used after 6 weight % into solid constituent using dilution with toluene.
In triacetyl cellulose (TAC) film as transparent base, (Konica Minolta Opto companies manufacture, commodity Name " KC4UA ", thickness:40 μm) on, it is coated with above-mentioned antiglare layer using chipping wheel coater (Comma Coater) (registration mark) Formation composition, is 300mJ/cm using the accumulative light quantity of high-pressure mercury light irradiation after heating 1 minute at 80 DEG C2It is ultraviolet Line, so as to be formed with antiglare layer (thickness over the transparent substrate:6.3 μm) antiglare film.In addition, in the transparent of the antiglare film 1.7 μm of intermediate layer is formed between base material and antiglare layer.
[embodiment 2]
Using used as the pentaerythritol triacrylate of adhesive resin, (Osaka organic chemistry company manufactures, trade name " Viscoat#300 ") (chemical industrial company of Xin Zhong villages manufactures, commodity for 50 weight portions and urethane acrylate prepolymer Name " UA-53H-80BK ") 50 weight portions, polystyrene particle (manufacture of ponding chemical conversion product industrial group, trade name " Techpolymer ", weight average particle diameter:3 μm, | D90- D50|:2.5 μm, refractive index:1.59) 5 weight portions, as organic clay Synthesis smectite (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") 2 weight portions, Photoepolymerizationinitiater initiater (DIC companies manufacture, trade name for (BASF AG manufactures, trade name " Irgacure 907 ") 3 weight portions and even paint " PC4100 ", solid constituent is 10%) 0.2 weight portion mixing, and (weight ratio is using toluene/cyclopentanone (CPN) mixed solvent 70/30) it is diluted, so as to prepare the antiglare layer formation composition that solid component concentration is 35 weight %.Furthermore, it is organic viscous Soil is to be changed into being used after 6 weight % into solid constituent using dilution with toluene.
In the tri acetyl cellulose membrane as transparent base, (Konica Minolta Opto companies manufacture, trade name " KC4UA ", thickness:40 μm) on, it is coated with above-mentioned antiglare layer shape using chipping wheel coater (Comma Coater) (registration mark) It is 300mJ/cm using the accumulative light quantity of high-pressure mercury light irradiation after heating 1 minute at 80 DEG C into composition2Ultraviolet, So as to be formed with antiglare layer (thickness over the transparent substrate:6.3 μm) antiglare film.In addition, in the transparent base of the antiglare film 1.7 μm of intermediate layer is formed between material and antiglare layer.
[comparative example 1]
The allotment amount of particle is set as into 5 weight portions, using as synthesis smectite (the Co-op Chemical of organic clay Company manufactures, trade name " Lucentite SAN ") allotment amount be set as 1.5 weight portions, and by antiglare layer formation composition Solid component concentration be set as 42 weight %, in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 2]
Using used as the synthesis smectite of organic clay, (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") allotment amount be set as 2.2 weight portions, and the solid component concentration of antiglare layer formation composition is set as into 33.5 weights Amount %, in addition, obtains in the same manner as example 1 antiglare film.
[comparative example 3]
Synthesis smectite (manufacture of Co-op Chemical companies, the trade name as organic clay is not used " Lucentite SAN "), in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 4]
The allotment amount of particle is set as into 10 weight portions, in addition, is obtained in the same manner as example 1 anti-dazzle Film.
[comparative example 5]
The allotment amount of particle is set as into 0.5 weight portion, in addition, is obtained in the same manner as example 1 anti-dazzle Film.
[comparative example 6]
Using used as the synthesis smectite of organic clay, (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") allotment amount be set as 10 weight portions, in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 7]
Using used as the synthesis smectite of organic clay, (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") allotment amount be set as 0.2 weight portion, in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 8]
The solid component concentration of antiglare layer formation composition is set as into 85 weight %, in addition, with embodiment 1 Identical mode obtains antiglare film.
[comparative example 9]
The solid component concentration of antiglare layer formation composition is set as into 15 weight %, in addition, with embodiment 1 Identical mode obtains antiglare film.
[comparative example 10]
(manufacture of Co., Ltd of figure new high-tech material Japan, trade name " TOSPEARL 105 ", weight are stepped using Silicone particles Equal particle diameter:0.5 μm, | D90- D50|:2.5 μm, refractive index:1.42) (stepping figure new high-tech material Japan has to replace Silicone particles Limit company manufactures, trade name " TOSPEARL 130 ", weight average particle diameter:3 μm, | D90- D50|:2.5 μm, refractive index:1.42), remove Beyond this, antiglare film is obtained in the same manner as example 1.
[comparative example 11]
Using Silicone particles (step the manufacture of Co., Ltd of figure new high-tech material Japan, trade name " TOSPEARL 3120 ", Weight average particle diameter:15 μm, | D90- D50|:2.5 μm, refractive index:1.42) (stepping figure new high-tech material Japan has to replace Silicone particles Limit company manufactures, trade name " TOSPEARL 130 ", weight average particle diameter:3 μm, | D90- D50|:2.5 μm, refractive index:1.42), remove Beyond this, antiglare film is obtained in the same manner as example 1.
[comparative example 12]
(manufacture of Co., Ltd of figure new high-tech material Japan, trade name " TOSPEARL 130 ", weight are stepped using Silicone particles Equal particle diameter:3 μm, | D90- D50|:20 μm, refractive index:1.42) Silicone particles are replaced (to step the limited public affairs of figure new high-tech material Japan Department's manufacture, trade name " TOSPEARL 130 ", weight average particle diameter:3 μm, | D90- D50|:2.5 μm, refractive index:1.42), except this with Outward, antiglare film is obtained in the same manner as example 1.
[comparative example 13]
The thickness of antiglare layer is set as into 15.9 μm, in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 14]
The thickness of antiglare layer is set as into 1.59 μm, in addition, antiglare film is obtained in the same manner as example 1.
[comparative example 15]
Using used as the pentaerythritol triacrylate of adhesive resin, (Osaka organic chemistry company manufactures, trade name " Viscoat#300 ") (chemical industrial company of Xin Zhong villages manufactures, commodity for 50 weight portions and urethane acrylate prepolymer Name " UA-53H-80BK ") 50 weight portions, porous silica particle (Fuji Silysia chemical companies manufacture, trade name " SYLOPHOBIC 100 ", the weight average particle diameter calculated using Coulter-counter method:1.4 μm (are calculated using laser desorption scattering method The weight average particle diameter for going out:2.7 μm (reference value)), refractive index:1.46) 11.6 weight portions, as the synthesis smectite of organic clay (Co-op Chemical companies manufacture, trade name " Lucentite SAN ") 20 weight portions, Photoepolymerizationinitiater initiater (BASF AG Manufacture, trade name " Irgacure 907 ") 3 weight portions and even paint (DIC companies manufacture, trade name " PC4100 ", solid into It is divided into 10%) 0.2 weight portion mixing, and is diluted using toluene/cyclopentanone (CPN) mixed solvent (weight ratio is 70/30), So as to prepare the antiglare layer formation composition that solid component concentration is 42 weight %.Furthermore, organic clay is dilute using toluene It is interpreted into solid constituent to be changed into being used after 6 weight %.
Using the antiglare layer formation composition for obtaining in the above described manner, in addition, in the same manner as example 1 Obtain antiglare film.
< evaluates >
The antiglare film obtained in embodiment and comparative example is made for into following evaluation.Show the result in table 1.1st, antiglare layer is recessed The shape (Ra, Sm, θ a) of convex surface
According to JIS B0601 (1994 annual version), determine it is average it is concavo-convex between it is coarse apart from Sm (mm) and arithmetical average surface Degree Ra (μm).Specifically, antiglare film transparent base the face with antiglare layer opposite side, using adhesive fit glass Plate (MATSUNAMI companies manufacture, MICRO SLIDE GLASS, model S, thickness 1.3mm, 45 × 50mm), so as to make examination Sample.Contact pin type surface roughness measurement device using the measure pin of radius of curvature R=2 μm with leading section (diamond) is (little Limited company of slope research institute manufactures, high accuracy fine shape analyzer, trade name " Surfcorder ET4000 "), sweeping Retouch speed and be 0.8mm, determine under conditions of a length of 4mm for 0.1mm/ seconds, cutoff, determine in said sample along prescribed direction The surface configuration of antiglare layer, so as to obtain it is average it is concavo-convex between apart from Sm (mm) and arithmetic mean surface roughness Ra.In addition, according to The surface roughness curve for being obtained obtains average tilt angle θ a (°).Furthermore, above-mentioned high accuracy fine shape analyzer can be certainly It is dynamic to calculate above-mentioned each measured value.
2nd, flicker is evaluated
On back lighting device (HAKUBA Photo Industry companies manufacture, trade name " Light Viewer5700 ") Configuration glass plate (thickness:700 μm), in the face with back lighting device opposite side of the glass plate, configuration black matrix pattern comes accurate Standby evaluation platform.
On the evaluation platform, 4 TAC film (thickness are alternately laminated respectively:80 μm) and 4 adhesive phase (thickness:20 μm) as the component A for the part for constituting gap X, further it is laminated TAC film (thickness:40 μm) and adhesive phase (thickness:20μ m)。
On above-mentioned component A, make transparent base down (that is, by make adhesive phase with transparent base to in the way of) match somebody with somebody Put the antiglare film obtained in embodiment and comparative example.Furthermore, such composition is to evaluate gap X for 500 μm of (μ ms of=TAC 80 The μ m 5+ transparent bases of 40 μ m 1+ adhesive phases of 4+TAC 20 and intermediate layer it is total 40 μm) in the case of flicker structure Into.
Then, to antiglare film irradiation light, by the flicker produced by following benchmark evaluation antiglare films.
Furthermore, the definition of black matrix pattern is set to 105ppi, 200ppi, 267ppi, and each definition is carried out Commentary valency.
○:Almost flicker free
△:Although there is flicker, for degree out of question in practicality
×:Visible practical problematic flicker
3rd, haze value
According to the mist degree (haze) of JIS K 7136 (version in 2000), using haze meter (color technical research institute system in village Make, trade name " HM-150 ") it is measured.
4th, white blur
In the face with antiglare layer opposite side of transparent base, using adhesive laminating black acrylic ester plate (Mitsubishi Rayon companies manufacture, thickness:2mm), so as to making the evaluation sample of the impact for inhibiting backside reflection.
In the environment of illumination is 1000Lx (equivalent to the common office environment using display), comment relative to this The upper surface of valency sample, using vertical direction as benchmark (0 °), from the journey that 60 ° of directions pass through visual observations white blur phenomenon Degree, is evaluated by following metewands.
○:Have not seen white blur
△:The white blur of the visible degree less to the impact of visibility
×:The stronger white blur of the visible degree for making visibility substantially reduce
5th, anti-glare
In the face with antiglare layer opposite side of transparent base, using adhesive laminating black acrylic ester plate (Mitsubishi Rayon companies manufacture, thickness:2mm), so as to making the evaluation sample of the impact for inhibiting backside reflection.
In the environment of illumination is 1000Lx (equivalent to the common office environment using display), using fluorescent lamp (three-wavelength source) irradiates the evaluation sample, according to the anti-glare that following metewand passes through visual assessment antiglare film.
○:Will not produce to produce visibility and affect mirroring for such picture
△:The picture of degree out of question mirrors generation is practical
×:There is mirroring for picture, and produce problem in practical use
It can be seen from table 1, with regard to the antiglare film of the present invention, there is specific equispaced Sm, average by the male and fomale(M&F) Tiltangleθ a and arithmetic mean surface roughness Ra, anti-glare and the transparency it is excellent, and can suppress flicker.
[reference example 1-E1,1-E2,1-C1]
With with embodiment 1,2 and the identical mode of comparative example 1, obtain antiglare film, and evaluate the antiglare film as follows Respective flicker.
With with above-mentioned evaluation (2) identical mode, prepare evaluation platform.
On the evaluation platform, adhesive phase (thickness is configured:20 μm) as the component A for the part for constituting gap X.
On above-mentioned component A, make transparent base down (that is, by make adhesive phase with transparent base to in the way of) match somebody with somebody Put the antiglare film obtained in embodiment and comparative example.Such composition is to evaluate gap X for 60 μm of (20 μm of=adhesive phases+saturating Bright base material and intermediate layer it is total 40 μm) in the case of flicker composition.
By such composition, carry out and above-mentioned evaluation (2) identical evaluation.Show the result in table 2.
[reference example 2-E1,2-E2,2-C1]
With with embodiment 1,2 and the identical mode of comparative example 1, obtain antiglare film, and evaluate the antiglare film as follows Respective flicker.
With with above-mentioned evaluation (2) identical mode, prepare evaluation platform.
On the evaluation platform, 7 TAC film (thickness are alternately laminated respectively:80 μm) and 7 adhesive phase (thickness:20 μm) as the component A for the part for constituting gap X, further it is laminated TAC film (thickness:40 μm) and adhesive phase (thickness:20μ m)。
On above-mentioned component A, make transparent base down (that is, by make adhesive phase with transparent base to in the way of) match somebody with somebody Put the antiglare film obtained in embodiment and comparative example.Such composition is to evaluate gap X for 800 μm of (μ m 7+TAC of=TAC 80 The μ m 8+ transparent bases of 40 μ m 1+ adhesive phases 20 and intermediate layer it is total 40 μm) in the case of flicker composition.
By such composition, carry out and above-mentioned evaluation (2) identical evaluation.Show the result in table 2.
It can be seen from table 1 and table 2, the image display device of the present invention is in the feelings that gap X is particular range (less than 700 μm) Under condition, significant flicker inhibition has been given play to.Furthermore, possess thicker glass substrate and gap X be more than 100 μm of image The excellent in te pins of durability of display device.
Symbol description
10 transparent bases
20 antiglare layers
100 antiglare films

Claims (9)

1. a kind of antiglare film, it possesses:Transparent base;With the antiglare layer being configured at least one face of the transparent base, Wherein,
The antiglare layer is male and fomale(M&F) with the surface of the transparent base opposite side,
The equispaced Sm of the male and fomale(M&F) is 150 μm~350 μm,
The average slope angle θ a of the male and fomale(M&F) are 0.1 °~2.5 °,
Arithmetic mean surface roughness Ra of the male and fomale(M&F) is 0.05 μm~0.5 μm.
2. antiglare film according to claim 1, wherein, concavo-convex equispaced Sm, the average tilt in the male and fomale(M&F) Arithmetic mean surface roughness Ra of angle θ a and male and fomale(M&F) shows following relations:0≤Ra/Sm×θa×1000≤4.
3. antiglare film according to claim 1 and 2, wherein, the antiglare layer includes adhesive resin and particle, the grain The weight average particle diameter of son is 1 μm~10 μm.
4. antiglare film according to any one of claim 1 to 3, wherein, the containing ratio of the particle is relative to institute The weight portion of adhesive resin 100 is stated for 1 weight portion~9 weight portion.
5. antiglare film according to any one of claim 1 to 4, wherein, the antiglare layer includes coherency filler.
6. antiglare film according to claim 5, wherein, the coherency filler is organic clay.
7. antiglare film according to any one of claim 1 to 6, wherein, the thickness of the antiglare layer is 3 μm~15 μm.
8. antiglare film according to any one of claim 1 to 7, it is further equipped with intermediate layer, and the intermediate layer is formed in Between the transparent base and the antiglare layer and at least a portion comprising the material for constituting the transparent base and/or institute At least a portion of adhesive resin is stated,
Wherein, the thickness in the intermediate layer is 0.1%~123% relative to the thickness of the antiglare layer.
9. a kind of image display device, it possesses the antiglare film and image-display units any one of claim 1 to 8,
Wherein, the antiglare film and the gap of image-display units are 100 μm~700 μm.
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