WO2014155787A1 - Film optique - Google Patents

Film optique Download PDF

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Publication number
WO2014155787A1
WO2014155787A1 PCT/JP2013/076382 JP2013076382W WO2014155787A1 WO 2014155787 A1 WO2014155787 A1 WO 2014155787A1 JP 2013076382 W JP2013076382 W JP 2013076382W WO 2014155787 A1 WO2014155787 A1 WO 2014155787A1
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WO
WIPO (PCT)
Prior art keywords
optical film
dye
weight
film
parts
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PCT/JP2013/076382
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English (en)
Japanese (ja)
Inventor
真章 中村
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積水化成品工業株式会社
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Application filed by 積水化成品工業株式会社 filed Critical 積水化成品工業株式会社
Priority to JP2015507933A priority Critical patent/JP6069490B2/ja
Publication of WO2014155787A1 publication Critical patent/WO2014155787A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles

Definitions

  • the present invention relates to an optical film that can be used as an antiglare film, a protective film or the like disposed on a display screen of a display.
  • liquid crystal displays particularly liquid crystal displays using LEDs (light emitting diodes) as light sources
  • LED lighting which are the mainstream of displays
  • blue light is light in the blue region (380 to 500 nm) of visible light (“blue light”).
  • blue light is said to have an adverse effect on the human eye. Therefore, a technique for reducing this blue light has attracted attention.
  • an optical component for cutting blue light an optical component including a dielectric multilayer film formed by vapor deposition is known.
  • Patent Document 1 describes an optical component in which a multilayer film having an average reflectance of 2 to 10% in a wavelength range of 400 to 500 nm is disposed on at least one surface of a plastic substrate. Has been.
  • the optical component of Patent Document 1 uses a dielectric multilayer film, basically, all light in the wavelength range of 400 to 500 nm cut by the optical component becomes reflected light. Therefore, in a situation where the reflected light of the optical component is incident on the eye, there is a concern that the light in the wavelength range of 400 to 500 nm cut by the optical component may enter the eye and adversely affect the eye.
  • the situation where the reflected light of the optical component is incident on the eye is, for example, that the light from the display is incident on the back surface of the surface facing the eye of the optical component and at the same time the surface of the optical component facing the eye.
  • a situation in which light (for example, light from LED illumination) enters, is reflected by an optical component, and enters the eye is conceivable.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an optical that can sufficiently reduce blue light while maintaining good transmitted image luminance when placed on a display screen of a display. To provide a film.
  • the optical film of the present invention includes a light-transmitting base film and a protective film including at least one of resin particles and silica particles formed on at least one surface of the base film.
  • An optical film comprising a glare layer, comprising a pigment, wherein the optical film has an average light absorption of 5% or more at a wavelength of 380 nm to 500 nm, and the total light transmittance of the optical film is equal to the wavelength of the optical film It is characterized by being higher than the average light transmittance of 380 nm to 500 nm.
  • the average optical absorptance of the optical film at a wavelength of 380 nm to 500 nm is 5% or more, blue light can be sufficiently reduced. Furthermore, according to the said structure, since it contains the pigment
  • the total light transmittance of the optical film is higher than the average light transmittance of the optical film at a wavelength of 380 nm to 500 nm, it is favorable when disposed on the display screen of the display.
  • the transmission image brightness can be maintained.
  • the glare-proof layer containing at least one of a resin particle and a silica particle is formed on the at least one surface of the said base film, sufficient anti-glare performance can be obtained.
  • optical film can be used as a protective film that is disposed on the display screen of the display and protects the display screen.
  • an optical film capable of sufficiently reducing blue light while maintaining good transmitted image brightness when disposed on a display screen of a display.
  • FIG. 2 is a graph showing the spectral transmittance of the optical film obtained in Example 1.
  • FIG. 6 is a graph showing the spectral transmittance of the optical film obtained in Example 4.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 5.
  • 7 is a graph showing the spectral transmittance of the optical film obtained in Example 6.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 7.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 8.
  • 6 is a graph showing the spectral transmittance of the optical film obtained in Comparative Example 1.
  • FIG. 11 is a cross-sectional view taken along line A-A ′ of the optical film shown in FIG. 10.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 9.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 10.
  • 10 is a graph showing the spectral transmittance of the optical film obtained in Example 11.
  • An optical film of the present invention is an optical film comprising a light-transmitting base film and an antiglare layer formed on at least one surface of the base film and including at least one of resin particles and silica particles.
  • the optical film has an average light absorptivity of 5% or more at a wavelength of 380 nm to 500 nm, and the total light transmittance of the optical film is an average light transmittance of the optical film at a wavelength of 380 nm to 500 nm. Higher than.
  • the average optical absorptance of the optical film at a wavelength of 380 nm to 500 nm is 5% or more.
  • the average optical absorptance of the optical film at a wavelength of 380 nm to 500 nm is preferably in the range of 5 to 45%, more preferably in the range of 5 to 40%, and in the range of 10 to 30%. More preferably it is.
  • the average optical absorptance of the optical film By setting the average optical absorptance of the optical film at a wavelength of 380 nm to 500 nm below the upper limit of the above range, the total light transmittance of the optical film can be improved, and when the optical film is disposed on the display screen of the display The color reproducibility of the display screen can be improved.
  • the average optical absorptance of the optical film By making the average optical absorptance of the optical film at a wavelength of 380 nm to 500 nm 10% or more, the blue light reduction effect by the optical film can be further enhanced.
  • the b * value of the optical film is preferably within a range of 5 to 35, more preferably within a range of 5 to 30, and further preferably within a range of 5 to 20. It is most preferable to be within the range.
  • the b * value of the optical film is less than 5, there is a possibility that the blue light reduction effect by the optical film is insufficient. If the b * value of the optical film exceeds 30, the yellow color of the optical film becomes too strong and the appearance deteriorates, or the color reproduction of the display screen when the optical film is disposed on the display screen of the display May be worse.
  • the total light transmittance of the optical film is higher than the average light transmittance at a wavelength of 380 nm to 500 nm. If the total light transmittance of the optical film is equal to or less than the average light transmittance at a wavelength of 380 nm to 500 nm, the transmitted image brightness is deteriorated when the optical film is disposed on the display screen of the display.
  • the difference between the total light transmittance of the optical film and the average light transmittance at a wavelength of 380 nm to 500 nm ((total light transmittance) ⁇ (average light transmittance at a wavelength of 380 nm to 500 nm)) is 2% or more. Preferably, it is 4% or more.
  • the difference between the total light transmittance of the optical film and the average light transmittance at a wavelength of 380 nm to 500 nm is 25% or less. Preferably, it is 15% or less. Thereby, the color reproducibility of the display screen when the optical film is disposed on the display screen of the display can be improved.
  • the total light transmittance of the optical film is preferably 80% or more, more preferably 85% or more, and further preferably 88% or more. If the total light transmittance of the optical film is less than 80%, the transmitted image luminance may be deteriorated when the optical film is disposed on the display screen of the display.
  • the haze of the optical film is preferably in the range of 1.5 to 40%, more preferably in the range of 2 to 30%.
  • the haze of the optical film is less than 1.5%, the antiglare performance of the optical film may be deteriorated. If the haze of the optical film exceeds 40%, the transmitted image clarity of the optical film may be deteriorated. For example, the visibility of the display screen when the optical film is disposed on the display screen of the display is poor. There is a risk.
  • Base film Although it does not specifically limit as a material which comprises the said base film, A general material can be used, For example, a cellulose acylate, the said acrylic resin ((meth) acrylate type polymer), polyester, polycarbonate, polyamide etc. Examples thereof include materials mainly composed of the above resins and inorganic materials such as glass.
  • (meth) acrylate means acrylate and / or methacrylate.
  • Examples of the cellulose acylate include cellulose triacetate, cellulose diacetate, and cellulose acetate butyrate.
  • Examples of the acrylic resin include methyl poly (meth) acrylate, poly (meth) ethyl acrylate, methyl (meth) acrylate-butyl (meth) acrylate, and the like.
  • (meth) acryl means acryl and / or methacryl.
  • Examples of the polyester include polyethylene terephthalate (hereinafter abbreviated as “PET”), polyethylene naphthalate, and the like.
  • the thickness of the base film is preferably in the range of 20 to 300 ⁇ m, and more preferably in the range of 20 to 200 ⁇ m.
  • the thickness of the antiglare layer is preferably 3 to 100 ⁇ m, more preferably 5 to 50 ⁇ m, and even more preferably 5 to 20 ⁇ m. If the thickness of the antiglare layer is less than 3 ⁇ m, the surface hardness of the optical film may be insufficient. If the thickness of the antiglare layer exceeds 100 ⁇ m, the amount of raw material required to form the antiglare layer increases, which is uneconomical.
  • the antiglare layer is formed to constitute the surface of the optical film.
  • the antiglare layer may contain at least one of resin particles and silica particles, but preferably contains at least one of resin particles and silica particles and a binder resin.
  • the resin particles include resin particles made of at least one of a (meth) acrylic monomer and a styrene monomer, silicone resin particles, polycarbonate particles, polyethylene particles, polyvinyl chloride particles, and melamine resins. Particles and the like.
  • the resin particles are preferably resin particles made of at least one of a (meth) acrylic monomer and a styrene monomer. In this case, since the light transmittance of the resin particles itself is improved, an optical film having a good total light transmittance can be realized.
  • the refractive index of the resin particles is generally in the range of 1.41 to 1.60.
  • the refractive index of a polymer obtained by polymerizing a (meth) acrylic monomer having a fluorine group-containing alkyl (meth) acrylate as a main component is about 1.41
  • the refractive index of a homopolymer of a (meth) acrylic monomer having an alkyl acrylate as a main component is about 1.495, and a homopolymer of a styrene monomer having a main component of styrene (polystyrene).
  • the refractive index is about 1.595
  • the refractive index of a copolymer of a (meth) acrylic monomer mainly composed of alkyl (meth) acrylate and a styrene monomer mainly composed of styrene is It is about 1.495 to 1.595.
  • the polymer of at least one of the (meth) acrylic monomer and the styrene monomer contains a structural unit derived from at least one of the (meth) acrylic monomer and the styrene monomer.
  • the (meth) acrylic monomer is not particularly limited as long as it is a compound having at least one acryloyloxy group or methacryloyloxy group, and is monofunctional (meth) having one ethylenically unsaturated group. It may be an acrylic monomer or a polyfunctional (meth) acrylic monomer having two or more ethylenically unsaturated groups.
  • the monofunctional (meth) acrylic monomer is not particularly limited, and examples thereof include (meth) acrylic acid, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl methacrylate, (Meth) acrylic such as n-butyl (meth) acrylate, isobutyl (meth) acrylate, n-octyl methacrylate, 2-ethylhexyl (meth) acrylate, dodecyl (meth) acrylate, stearyl (meth) acrylate Acid alkyl; fluorine-containing (meth) acrylic acid ester such as 2,2,2-trifluoroethyl methacrylate, 2,2,3,3-tetrafluoropropyl methacrylate, perfluorooctylethyl acrylate; tetrahydrofurfuryl acrylate, etc.
  • the polyfunctional (meth) acrylic monomer is not particularly limited as long as it is a compound having two or more acryloyloxy groups or methacryloyloxy groups.
  • Examples include allyl acid, trimethylolpropane trimethacrylate, pentaerythritol tetramethacrylate, and diethylene glycol dimethacrylate.
  • These polyfunctional (meth) acrylic monomers may be used alone or in a combination of two or more.
  • the styrene monomer is not particularly limited as long as it is a styrene (styrene or styrene derivative), and may be a monofunctional styrene monomer having one ethylenically unsaturated group, It may be a polyfunctional styrenic monomer having two or more ethylenically unsaturated groups.
  • the monofunctional styrene monomer is not particularly limited, and examples thereof include styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, ⁇ -methylstyrene, and the like. These monofunctional styrenic monomers may be used alone or in combination of two or more.
  • the polyfunctional styrene-based monomer is not particularly limited, and examples thereof include aromatic divinyl compounds such as divinylbenzene, divinylnaphthalene, and derivatives thereof. These polyfunctional styrene monomers may be used alone or in a combination of two or more.
  • the structural unit derived from the monofunctional (meth) acrylic monomer and / or the monofunctional styrene monomer is preferably in the range of 50 to 95% by weight with respect to 100% by weight of the polymer. . If the amount of the structural unit derived from the monofunctional (meth) acrylic monomer and / or monofunctional styrene monomer is less than 50% by weight, further improvement in solvent resistance cannot be expected, Cost will increase. When the amount of the structural unit derived from the monofunctional (meth) acrylic monomer and / or the monofunctional styrene monomer is more than the above range, the degree of cross-linking of the polymer is low, and thus resin particles are included.
  • the resin particles When applying a paint, the resin particles may swell and the viscosity of the paint may increase, and the workability of the application may be reduced.
  • the amount of the structural unit derived from the monomer with respect to 100% by weight of the polymer corresponds to the amount of the monomer with respect to 100% by weight of the total amount of all monomers.
  • the polymer may be a homopolymer of a (meth) acrylic monomer or a homopolymer of a styrene monomer, and a (meth) acrylic monomer and styrene. It may be a copolymer with a monomer based on at least one of a (meth) acrylic monomer and a styrene monomer and another vinyl monomer (at least one ethylenically unsaturated group). And a copolymer thereof.
  • Examples of the other vinyl monomers include saturated fatty acid vinyl such as vinyl acetate, vinyl propionate and vinyl versatate; ⁇ , ⁇ -unsaturated nitrile such as acrylonitrile and methacrylonitrile; (meth) acrylic acid, ⁇ , ⁇ -unsaturated carboxylic acids such as crotonic acid, citraconic acid, itaconic acid, maleic acid, fumaric acid, monoalkyl esters of ⁇ , ⁇ -unsaturated dicarboxylic acids (eg monobutyl maleate); ⁇ , ⁇ -unsaturated carboxylates such as ammonium salts or alkali metal salts of saturated carboxylic acids; ⁇ , ⁇ -unsaturated carboxylic anhydrides such as maleic anhydride; (meth) acrylamide, diacetone acrylamide, N-methylol (Meth) acrylamide, N-methylol methacrylamide, methylolated diacetone acrylamide, ⁇ ,
  • the amount of the structural unit derived from the polyfunctional vinyl monomer is 5 with respect to 100 parts by weight of the structural unit derived from the monofunctional (meth) acrylic monomer and / or the monofunctional styrene monomer. It is preferably in the range of ⁇ 100 parts by weight, and preferably in the range of 5 ⁇ 50% by weight with respect to 100% by weight of the polymer.
  • the amount of the structural unit derived from the polyfunctional vinyl monomer is less than the above range, the degree of crosslinking of the polymer is low. As a result, when a paint containing resin particles is applied, the resin particles may swell and increase the viscosity of the paint, which may reduce the workability of the coating.
  • the volume average particle diameter of the resin particles is preferably in the range of 0.3 to 10 ⁇ m, and more preferably in the range of 0.5 to 5 ⁇ m.
  • the volume average particle diameter of the resin particles is less than 0.3 ⁇ m, the light transmittance of the antiglare layer increases and the antiglare performance of the optical film decreases.
  • the volume average particle diameter of the resin particles exceeds 10 ⁇ m, the haze of the optical film is increased, which may cause glare when the optical film is disposed on a light output surface such as a display screen of a display. .
  • the coefficient of variation of the particle diameter of the resin particles (hereinafter, the coefficient of variation of the particle diameter is referred to as “CV value”) is preferably 30% or less, more preferably 20% or less, and 15% or less. More preferably it is.
  • the CV value of the resin particles exceeds 20%, particularly more than 30%, the unevenness of the surface of the antiglare layer becomes large, and bright spots appear when an optical film is disposed on the light output surface such as a display screen of a display. Many are likely to occur.
  • the CV value of the resin particles exceeds 20%, particularly more than 30%, the particle size distribution of the resin particles becomes wide. Therefore, when the antiglare layer is formed, Defects are likely to occur.
  • the content of the resin particles in the antiglare layer is preferably 1 to 10 parts by weight and more preferably 3 to 8 parts by weight with respect to 100 parts by weight of the binder resin. There exists a possibility that sufficient anti-glare property cannot be provided to an anti-glare layer as the content rate of the resin particle in the said anti-glare layer is less than 3 weight part.
  • the content of the resin particles in the antiglare layer exceeds 8 parts by weight, the haze of the optical film is increased, and glare occurs when the optical film is disposed on the light output surface such as a display screen of a display. There is a risk of becoming.
  • the volume average particle diameter of the silica particles is preferably in the range of 0.3 to 10 ⁇ m, and more preferably in the range of 0.5 to 5 ⁇ m.
  • the volume average particle diameter of the silica particles is less than 0.3 ⁇ m, the light transmittance of the antiglare layer increases and the antiglare performance of the optical film decreases.
  • the volume average particle diameter of the silica particles exceeds 10 ⁇ m, the haze of the optical film increases, which may cause glare when the optical film is disposed on a light exit surface such as a display screen of a display. is there.
  • the CV value of the silica particles (when the silica particles are a mixture of a plurality of types of silica particles having different volume average particle sizes, the CV value of the mixture) is preferably 30% or less, and 20% or less. It is more preferable that it is 15% or less.
  • the CV value of the silica particles exceeds 30%, unevenness on the surface of the antiglare layer becomes large, and many bright spots are likely to occur when an optical film is disposed on a light exit surface such as a display screen of a display.
  • the CV value of the silica particles exceeds 30%, the particle size distribution of the resin particles becomes wide, so that when the antiglare layer is formed, defects in the antiglare layer are likely to occur due to the coarse particles. .
  • the silica particles are a mixture of a plurality of types of silica particles having different volume average particle diameters, and each CV value of the plurality of types of silica particles is preferably 20% or less, and the silica particles have a volume average A mixture comprising first silica particles having a particle diameter of 5 to 10 ⁇ m and second silica particles having a volume average particle diameter of 1 to 3 ⁇ m, wherein the first silica particles and the second silica particles It is more preferable that the coefficient of variation of the particle diameter of each is 20% or less.
  • the CV value of the silica particles exceeds 20%, unevenness on the surface of the antiglare layer increases, and many bright spots are likely to occur when an optical film is disposed on a light exit surface such as a display screen of a display. . Further, when the CV value of the silica particles exceeds 20%, the particle size distribution of the resin particles becomes wide, so that when the antiglare layer is formed, defects in the antiglare layer are likely to occur due to the coarse particles. .
  • an optical film by using a combination of a plurality of types of silica particles, in particular, a combination of a first silica particle having a volume average particle diameter of 5 to 10 ⁇ m and a second silica particle having a volume average particle diameter of 1 to 3 ⁇ m, an optical film
  • the anti-glare property and the total light transmittance can be balanced.
  • the volume average particle diameter of the silica particles is increased, the haze is increased and the antiglare property is improved, while the total light transmittance is decreased.
  • the volume average particle diameter of the silica particles is reduced, the total light transmittance is increased while the haze is decreased.
  • silica particles having a larger volume average particle diameter particularly silica particles having a smaller volume average particle diameter, particularly 1 to 3 volume average particle diameter than the first silica particles having a volume average particle diameter of 5 to 10 ⁇ m.
  • silica particles having a smaller volume average particle diameter particularly 1 to 3 volume average particle diameter than the first silica particles having a volume average particle diameter of 5 to 10 ⁇ m.
  • the content of the resin particles and / or silica particles in the antiglare layer is preferably 1 to 12 parts by weight, more preferably 1 to 10 parts by weight with respect to 100 parts by weight of the binder resin. More preferably, it is ⁇ 8 parts by weight. If the content of the resin particles and / or silica particles in the antiglare layer is less than 1 part by weight, sufficient antiglare properties may not be imparted to the antiglare layer. When the content of the resin particles and / or silica particles in the antiglare layer exceeds 12 parts by weight, the haze of the optical film increases, and when the optical film is disposed on the light output surface such as the display screen of the display May cause glare.
  • the antiglare layer is a layer (so-called hard coat layer) having a pencil hardness of 2H or more as measured by a pencil hardness test specified in JIS K 5600-5-4: 1999 (load applied to the pencil is 4.9 N). ) Is preferable. Thereby, an optical film excellent in scratch resistance can be realized. Therefore, when the optical film is disposed on the surface of the display screen or the like of the display so that the surface on which the antiglare layer is formed faces the outside (the side opposite to the surface), The optical film functions as a protective film that can sufficiently protect the surface of the display screen and the like from scratches.
  • binder resin examples include a thermoplastic resin, a thermosetting resin, a mixture of an ionizing radiation curable resin and an ionizing radiation polymerization initiator.
  • thermoplastic resin examples include cellulose derivatives such as acetylcellulose, nitrocellulose, acetylbutylcellulose, ethylcellulose, and methylcellulose; vinyl acetate homopolymers or copolymers, vinyl chloride homopolymers or copolymers, and chlorides. Vinylidene homopolymers or copolymers; acetal resins such as polyvinyl formal and polyvinyl butyral; acrylic resins (polyacrylate esters) and their copolymer resins, methacrylic resins (polymethacrylate esters) and their copolymer resins, etc. (Meth) acrylic resin; polystyrene resin; polyamide resin; linear polyester resin; polycarbonate resin.
  • cellulose derivatives such as acetylcellulose, nitrocellulose, acetylbutylcellulose, ethylcellulose, and methylcellulose
  • vinyl acetate homopolymers or copolymers vinyl chloride homopolymers or copolymers, and
  • thermosetting resin examples include a thermosetting acrylic resin, a thermosetting urethane resin composed of an acrylic polyol and an isocyanate prepolymer, a phenol resin, a urea melamine resin, an epoxy resin, an unsaturated polyester resin, and a silicone resin. Etc.
  • the ionizing radiation curable resin may be any resin that can be cured by irradiating with ionizing radiation (ultraviolet rays, electron beams, etc.), such as an ionizing radiation polymerizable monomer or an ionizing radiation polymerizable prepolymer (ionizing radiation). What mixed 1 type (s) or 2 types or more, such as a polymerizable oligomer), can be used.
  • ionizing radiation ultraviolet rays, electron beams, etc.
  • What mixed 1 type (s) or 2 types or more, such as a polymerizable oligomer can be used.
  • An ionizing radiation polymerizable polyfunctional prepolymer having two or more ionizing radiation polymerizable functional groups is preferred.
  • the ionizing radiation polymerizable functional group possessed by the ionizing radiation polymerizable polyfunctional prepolymer or the polyfunctional monomer is a photopolymerizable functional group, an electron beam polymerizable functional group, or a radiation polymerizable functional group.
  • photopolymerizable functional groups are particularly preferred.
  • Specific examples of the photopolymerizable functional group include unsaturated polymerizable functional groups such as a (meth) acryloyl group, a vinyl group, a styryl group, and an allyl group. ) An acryloyl group is preferred.
  • “(meth) acryloyl” represents acryloyl or methacryloyl.
  • the ionizing radiation polymerizable polyfunctional prepolymer is preferably a polyfunctional prepolymer having two or more photopolymerizable functional groups (hereinafter referred to as “photopolymerizable polyfunctional prepolymer”).
  • photopolymerizable polyfunctional prepolymer a (meth) acrylic prepolymer having two or more (meth) acryloyl groups in one molecule is particularly preferably used.
  • Such a (meth) acrylic prepolymer becomes a three-dimensional network structure by crosslinking and curing.
  • Examples of the (meth) acrylic prepolymer include urethane (meth) acrylate, polyester (meth) acrylate, epoxy (meth) acrylate, and melamine (meth) acrylate.
  • the above-mentioned polyfunctional vinyl monomers can be used, but a polyfunctional monomer having two or more photopolymerizable functional groups (hereinafter referred to as “photopolymerizable polyfunctional”). (Referred to as "monomer”).
  • the photopolymerizable polyfunctional monomer examples include alkylene glycol di (meth) acrylates such as neopentyl glycol acrylate, 1,6-hexanediol (meth) acrylate, and propylene glycol di (meth) acrylate; Polyoxyalkylene glycol di (meth) acrylates such as ethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate; pentaerythritol di (meta) ) Di (meth) acrylates of trihydric or higher polyhydric alcohols such as acrylates; 2,2-bis [4- (acryloxy-diethoxy) phenyl] propane, 2,2-bis [4- (acryloxy-polypropylene) Di (meth) acrylates of polyhydric alcohol ethylene oxide adducts or polyhydric alcohol prop
  • the photopolymerizable polyfunctional monomer is preferably an ester of a polyhydric alcohol and (meth) acrylic acid as in these specific examples, and has 3 or more (meth) acryloyl groups in one molecule.
  • the polyfunctional monomer having is more preferable.
  • polyfunctional monomer having three or more (meth) acryloyl groups in one molecule include trimethylolpropane tri (meth) acrylate, trimethylolethane tri (meth) acrylate, 1,2,4- Cyclohexanetetra (meth) acrylate, pentaglycerol triacrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, dipentaerythritol tetra (meth) acrylate, di Examples include pentaerythritol hexa (meth) acrylate, tripentaerythritol triacrylate, and tripentaerythritol hexaacrylate. Two or more kinds of the photopolymerizable polyfunctional monomers may be used in combination.
  • a photopolymerization initiator is used as the ionizing radiation polymerization initiator. It is preferable to use as.
  • a photoradical polymerization initiator or a photocationic polymerization initiator is preferable, and a photoradical polymerization initiator is particularly preferable.
  • Polymerization of the photopolymerizable polyfunctional monomer or photopolymerizable polyfunctional prepolymer can be performed by irradiation with ionizing radiation in the presence of a photo radical initiator. Accordingly, a paint containing the photopolymerizable polyfunctional monomer or photopolymerizable polyfunctional prepolymer, a photo radical initiator, and at least one of resin particles and silica particles is prepared, and the paint is applied to the base film. After the coating, the antiglare layer can be formed on at least one surface of the substrate film by curing the paint by a polymerization reaction by ionizing radiation.
  • photo radical polymerization initiator examples include acetophenones, benzoins, benzophenones, phosphine oxides, ketals, ⁇ -hydroxyalkylphenones, ⁇ -aminoalkylphenones, anthraquinones, thioxanthones, azo compounds, peroxides (Described in JP 2001-139663 A), 2,3-dialkyldione compounds, disulfide compounds, fluoroamine compounds, aromatic sulfoniums, onium salts, borate salts, active halogen compounds, ⁇ -acyloxy Muester and the like.
  • acetophenones examples include acetophenone, 2,2-diethoxyacetophenone, p-dimethylacetophenone, 1-hydroxydimethylphenyl ketone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-4-methylthio-2-morpholinopropio.
  • examples include phenone and 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone.
  • benzoins examples include benzoin, benzoin benzoate, benzoin benzene sulfonate, benzoin toluene sulfonate, benzoin methyl ether, benzoin ethyl ether, and benzoin isopropyl ether.
  • benzophenones examples include benzophenone, 2,4-dichlorobenzophenone, 4,4-dichlorobenzophenone, p-chlorobenzophenone, and the like.
  • phosphine oxides examples include 2,4,6-trimethylbenzoyldiphenylphosphine oxide.
  • Examples of the ketals include benzylmethyl ketals such as 2,2-dimethoxy-1,2-diphenylethane-1-one.
  • Examples of the ⁇ -hydroxyalkylphenones include 1-hydroxycyclohexyl phenyl ketone.
  • Examples of the ⁇ -aminoalkylphenones include 2-methyl-1- [4- (methylthio) phenyl] -2- (4-morpholinyl) -1-propanone.
  • photocleavable photoradical polymerization initiators include trade names “Irgacure (registered trademark) 651” (2,2-dimethoxy-1,2-diphenylethane-1-one) manufactured by BASF Japan Ltd., BASF Trade name “Irgacure (registered trademark) 184” (1-hydroxycyclohexyl phenyl ketone) manufactured by Japan Co., Ltd., trade name “Irgacure (registered trademark) 907” (2-methyl-1- [4- (Methylthio) phenyl] -2- (4-morpholinyl) -1-propanone), trade name “Irgacure (registered trademark) 2959” (1- ⁇ 4- (2-hydroxyethoxy) -phenyl ⁇ ) manufactured by BASF Japan Ltd. -Hydroxy-2-methyl-1-propan-1-one) and the like are preferable examples.
  • Irgacure (registered trademark) 651 (2,2-dime
  • the photopolymerization initiator is preferably used within a range of 0.1 to 15 parts by weight with respect to 100 parts by weight of the photopolymerizable polyfunctional monomer or photopolymerizable polyfunctional prepolymer. More preferably, it is used within the range of 10 parts by weight.
  • a photosensitizer may be used in addition to the photopolymerization initiator.
  • the photosensitizer include n-butylamine, triethylamine, tri-n-butylphosphine, Michler's ketone, thioxanthones and the like.
  • a solvent (diluent) for diluting the binder resin may be used as necessary.
  • the solvent include aromatic hydrocarbon solvents such as toluene and xylene; ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone; ester solvents such as ethyl acetate and butyl acetate; ether solvents such as dioxane and ethylene glycol diethyl ether Water, alcohol solvents and the like. These solvents may be used alone or in combination of two or more.
  • the antiglare layer is formed using a paint containing an ionizing radiation curable resin, by applying the paint and then irradiating the paint with ionizing radiation (ultraviolet rays, electron beams, etc.) to cure the paint
  • ionizing radiation ultraviolet rays, electron beams, etc.
  • a method of irradiating with ionizing radiation a method of irradiating ultraviolet rays in a wavelength region of 100 to 400 nm, preferably 200 to 400 nm, emitted from an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a metal halide lamp or the like;
  • a method of irradiating an electron beam having a wavelength region of less than 100 nm emitted from a mold or curtain type electron beam accelerator can be used.
  • a reverse roll coating method As a method for applying the paint on the base film, a reverse roll coating method, a gravure coating method, a die coating method, a comma coating method, a spray coating method, or the like can be used.
  • the dye preferably contains a first dye having a maximum absorption wavelength in an ultraviolet-visible absorption spectrum (ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm) in the range of 380 to 500 nm. Thereby, blue light can be reduced more effectively.
  • ultraviolet-visible absorption spectrum ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm
  • the ultraviolet-visible absorption spectrum of the dye can be measured using the following measurement method. 0.001 part by weight of the dye is added to 100 parts by weight of the solvent in which the dye is soluble, and the dye is dissolved in the solvent to obtain a dye solution. The obtained dye solution is measured for an ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm using a spectrophotometer (trade name “Hitachi spectrophotometer U-3900”, Hitachi High-Technologies Corporation). Before measuring the dye solution, a baseline is established by measuring an ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm with the spectrophotometer for the solvent used for dissolving the dye.
  • the first dye is not particularly limited as long as it is a dye having a maximum absorption wavelength in the ultraviolet-visible absorption spectrum in the range of 380 to 500 nm, and is a dye that can be dissolved in an organic solvent (oil-soluble dye) or pigment. , Dyes and the like can be used. Among these, a dye that can be dissolved in an organic solvent is preferable as the first dye.
  • Preferred organic solvents include aromatic hydrocarbon solvents such as toluene and xylene; ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone; ester solvents such as ethyl acetate and butyl acetate; ether solvents such as dioxane and ethylene glycol diethyl ether A solvent etc. are mentioned. More preferable organic solvents include aromatic hydrocarbon solvents such as toluene, methyl isobutyl ketone, and methyl ethyl ketone. Examples of the dye that can be dissolved in an organic solvent include “YELLOW 93” (CI Solvent Yellow 93), “OIL YELLOW 186”, C.I. I.
  • Solvent Yellow 16 C.I. I. Solvent Yellow 33, C.I. I. Solvent Yellow 79, C.I. I. Solvent Yellow 82 (for example, “VALIFAST (registered trademark) YELLOW 4120” manufactured by Orient Chemical Co., Ltd.), C.I. I. Solvent Orange 80, C.I. I. Solvent Orange 45 (for example, “VALIFAST (registered trademark) YELLOW 3108” manufactured by Orient Chemical Co., Ltd.), C.I. I. Solvent Orange 62, C.I. I. Solvent Orange 54 (for example, “VALIFAST (registered trademark) ORANGE 3210” manufactured by Orient Chemical Co., Ltd.), C.I. I.
  • Solvent Yellow 151 for example, “VALIFAST (registered trademark) YELLOW 3170” manufactured by Orient Chemical Co., Ltd.), C.I. I. Acid Yellow 42 (for example, “VALIFAST (registered trademark) YELLOW 1101” manufactured by Orient Chemical Co., Ltd.), “DAA51” (trade name) (manufactured by Yamada Chemical Co., Ltd.), C.I. I. Pigment yellow 74 (for example, “Fast Yellow 7416” manufactured by Sanyo Dyeing Co., Ltd.), “NAZ24” (trade name) (manufactured by Yamada Chemical Co., Ltd.), and the like.
  • the pigment include azo pigments such as benzidine yellow 14 and polycyclic pigments as organic pigments. These dyes may be used alone or in combination of two or more.
  • the dye preferably contains a blue second dye in addition to the first dye. That is, it is preferable to use a mixture of the first dye and the blue second dye as the dye.
  • the first pigment is used alone as the pigment, the optical film is colored yellow or a color close to it (for example, orange), and the optical film has a yellowish appearance.
  • dye is mixed with a said 1st pigment
  • the blue dye means a dye having an absorption maximum peak (maximum absorption wavelength) in the range of 570 to 620 nm.
  • blue second dye examples include “NEO SUPER BLUE C-558” manufactured by Chuo Synthetic Chemical Co., Ltd., and tetraazaporphyrin-based compounds (for example, “TAP-2” “TAP” manufactured by Yamada Chemical Co., Ltd.). -18 "" TAP-45 "), C.I. I. Pigment blue 15: 3, C.I. I. Pigment Blue 15, Bituminous Blue, Cobalt Blue, Alkaline Blue Lake, Victoria Blue Lake, Phthalocyanine Blue, Metal-free Phthalocyanine Blue, Partially Chlorinated Phthalocyanine Blue, Fast Sky Blue, Indanthrene Blue BC, C.I. I. Solvent Blue 35, C.I. I. Solvent Blue 70 etc. are mentioned. These dyes may be used alone or in combination of two or more.
  • other pigments other than the first pigment and the second pigment can be added to the antiglare layer.
  • the other dye include C.I. I. Solvent Red 132, C.I. I. Solvent Black 27, “OIL GREEN 502” (manufactured by Orient Chemical Industry Co., Ltd.), “OIL GREEN BG” (manufactured by Orient Chemical Industry Co., Ltd.), “VALIFAST (registered trademark) RED 3306” (manufactured by Orient Chemical Industry Co., Ltd.), etc. Is mentioned. These other pigments may be used alone or in combination of two or more.
  • the dye may be contained in a dye-containing layer formed on at least one surface of the base film, or may be contained in the base film.
  • the dye-containing layer may be formed as a layer different from the antiglare layer, or may be formed as the antiglare layer. That is, the pigment may be contained in a pigment-containing layer formed as a layer separate from the antiglare layer, or may be contained in the antiglare layer. However, if pigments are contained in the antiglare layer that is exposed at the time of use, the scratch resistance of the optical film at the time of use may be reduced. It is preferred that the antiglare layer at the position to be a surface does not contain a pigment. Moreover, since the anti-glare property of an optical film may fall when the pigment
  • the optical film has an ultraviolet-visible absorption spectrum (ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm) having a maximum absorption wavelength in the range of 320 nm or more and less than 380 nm, and also has an absorption in the visible region of a wavelength of 380 nm or more. It may further contain a light absorber. Thereby, blue light can be further reduced while maintaining the total light transmittance of the optical film at a good level.
  • ultraviolet-visible absorption spectrum ultraviolet-visible absorption spectrum having a wavelength of 300 to 800 nm
  • It may further contain a light absorber. Thereby, blue light can be further reduced while maintaining the total light transmittance of the optical film at a good level.
  • UV-visible light absorber examples include 2,4,6-tris (2-hydroxy-4-hexyloxy-3-methylphenyl) -1,3,5-triazine, hydroxyphenylbenzotriazole, 2-hydroxy- Examples include 4-methoxybenzophenone, 2,4-benzoylresorcin, 2,2-dihydroxy-4-methoxybenzophenone, and the like. These ultraviolet and visible light absorbers may be used alone or in combination of two or more.
  • the ultraviolet-visible light absorber may be contained in a dye-containing layer formed on at least one surface of the base film, or may be contained in the base film. That is, the ultraviolet-visible light absorber may be contained in a dye-containing layer formed as a layer separate from the antiglare layer, or may be contained in the antiglare layer.
  • the optical film of the present invention preferably has a light-transmitting base film 1 and at least one of resin particles and silica particles formed on one surface of the base film 1.
  • dye formed on the other surface of the said base film 1 are included.
  • the dye is included in the dye-containing layer 3 formed on one surface of the base film 1.
  • the dye-containing layer 3 is formed as a layer different from the antiglare layer 2. That is, the pigment is contained in the pigment-containing layer 3 formed as a layer separate from the antiglare layer 2.
  • the yellowish color is basically colored by the pigment, but according to the above configuration, the yellowness is slightly suppressed when the optical film is viewed from the antiglare layer 2 side. That is, the light from the pigment is basically yellowish light, but the color of the light is diffused when passing through the anti-glare layer 2 so that the saturation is lowered (becomes white). To reach. Therefore, the apparent yellowness of the optical film is suppressed.
  • the external shape thereof is substantially the same as the external shape of the entire display.
  • the dye-containing layer 3 is formed on the entire surface of the optical film by printing or the like as shown in the plan view of FIG.
  • the color of the display frame is affected by the coloring of the dye-containing layer 3 because the dye-containing layer 3 is disposed not only at the position overlapping the display screen of the display but also at the position overlapping the display frame.
  • the display is a display having a dark frame such as black, coloring of the display frame does not become obvious, but the display has a light color frame such as white (for example, in the case of an Apple tablet personal computer “iPad (registered trademark)” or an Apple smartphone “iPhone (registered trademark)”, the frame of the display is colored yellowish May appear and the display may not look good.
  • iPad registered trademark
  • iPhone registered trademark
  • the optical film of the present invention when the optical film of the present invention is affixed to a display having a display screen and a frame surrounding the display screen, the optical film of the present invention is at least one of the base film.
  • a dye-containing layer containing the dye and a binder resin is formed on the surface, and the dye-containing layer is formed only on a portion corresponding to the display screen of the display on at least one surface of the base film. May be.
  • FIG. 10 is a plan view showing the optical film of this embodiment
  • FIG. 11 is a cross-sectional view of the optical film shown in FIG. 10 taken along the line A-A ′.
  • the optical film of this embodiment includes a light-transmissive base film 1 and at least one of resin particles and silica particles formed on one surface of the base film 1.
  • an agent layer 4 When the optical film of this embodiment is attached to a display, the surface on the antiglare layer 2 side becomes the front surface (exposed surface), and the surface on the adhesive layer 4 side becomes the back surface (surface in contact with the display).
  • dye containing layer 3 is one side of the said base film 1 among the whole area
  • the pigment is contained in the pigment-containing layer 3 formed on one surface of the base film 1.
  • the dye-containing layer 3 is formed as a layer different from the antiglare layer 2. That is, the pigment is contained in the pigment-containing layer 3 formed as a layer separate from the antiglare layer 2.
  • the pressure-sensitive adhesive layer will be described later.
  • a method of forming the dye-containing layer only on a portion corresponding to the display screen of the display on at least one surface of the base film a method of forming the dye-containing layer by printing such as an inkjet method or gravure printing Is mentioned.
  • the dye-containing layer formed as a layer different from the antiglare layer or as the antiglare layer will be described below.
  • the dye-containing layer may contain a dye, but preferably contains a dye and a binder resin. Thereby, the light transmittance of the said pigment
  • the amount of the first dye added to the dye-containing layer is preferably in the range of 0.01 to 2 parts by weight, and in the range of 0.05 to 1 part by weight with respect to 100 parts by weight of the binder resin. More preferably. There exists a possibility that the reduction effect of the blue light by the said optical film may become inadequate that the addition amount of a said 1st pigment
  • the amount of the blue second dye added to the dye-containing layer is 0.005 to 2 with respect to 100 parts by weight of the binder resin. It is preferably in the range of parts by weight, and more preferably in the range of 0.01 to 1 part by weight.
  • the amount of the blue second dye added to the dye-containing layer is preferably less than 100 parts by weight and more preferably less than 80 parts by weight with respect to 100 parts by weight of the first dye. If the amount of the blue second dye added is larger than the above range, the blue density of the dye-containing layer may be too high, and the optical transparency of the optical film may not be maintained at a sufficient level.
  • the amount of the UV-visible light absorber added to the dye-containing layer is 0.01 to 5 parts by weight with respect to 100 parts by weight of the binder resin. It is preferably within the range, and more preferably within the range of 0.2 to 2 parts by weight. There exists a possibility that the reduction effect of the blue light by the said ultraviolet visible light absorber may become inadequate that the addition amount of the said ultraviolet visible light absorber is less than 0.01 weight part.
  • the addition amount of the UV-visible light absorber exceeds 5 parts by weight, the yellow density of the dye-containing layer becomes too high due to absorption of light (visible light) of 380 nm or more by the UV-visible light absorber, and the optical film There is a possibility that the light transmittance of the glass cannot be maintained at a sufficient level.
  • the thickness of the dye-containing layer is preferably 3 to 100 ⁇ m, more preferably 5 to 50 ⁇ m, and even more preferably 5 to 20 ⁇ m. If the thickness of the dye-containing layer is less than 3 ⁇ m, the surface hardness of the optical film may be insufficient. If the thickness of the dye-containing layer exceeds 100 ⁇ m, the amount of raw material necessary to constitute the dye-containing layer increases, which is uneconomical.
  • the dye-containing layer may be a layer having a pencil hardness of 2H or higher (so-called hard coat layer).
  • the binder resin contained in the dye-containing layer, the solvent that can be used in the paint used to form the dye-containing layer, the coating method of the paint, the curing method of the paint, and the like can be the same as those of the antiglare layer.
  • the optical film of the present invention is arranged in a form in which the dye-containing layer is not exposed, for example, when the dye-containing layer is arranged so as to be in contact with the display screen of the display, it is included in the dye-containing layer.
  • the binder resin to be used may be a thermosetting resin.
  • the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is preferably a pressure-sensitive adhesive suitable for optical applications, such as an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive.
  • the pressure-sensitive adhesive layer may be a self-adsorbing silicone layer.
  • the thickness of the pressure-sensitive adhesive layer is usually in the range of 5 to 100 ⁇ m, preferably in the range of 10 to 60 ⁇ m.
  • a release film may be provided on the pressure-sensitive adhesive layer as necessary.
  • the release film include those obtained by applying a release agent made of silicone resin or the like to various plastic films made of polyethylene terephthalate, polypropylene, or the like.
  • the thickness of the release film is not particularly limited, but is usually in the range of 20 to 150 ⁇ m.
  • the volume average particle diameter, the CV value, and the refractive index measurement method of the resin particles used in the following examples and comparative examples, and the haze and totality of the optical films obtained in the following examples and comparative examples A method for measuring light transmittance, pencil hardness, spectral transmittance, average light absorption at a wavelength of 380 nm to 500 nm, and b * value, and a method for evaluating glare, antiglare performance, and color reproducibility will be described.
  • volume average particle size of resin particles and silica particles was measured using a laser diffraction / scattering type particle size distribution analyzer (“LS 13 320” manufactured by Beckman Coulter, Inc.) and a universal liquid sample module.
  • measuring particles 0.1 g of resin particles or silica particles to be measured (hereinafter referred to as “measuring particles”) in 10 ml of a 0.1 wt% nonionic surfactant aqueous solution (manufactured by Yamato Scientific Co., Ltd., Disperse using a “TOUCMIXER MT-31”) and an ultrasonic cleaner (“ULTRASONIC CLEANER VS-150” manufactured by Velvo Crea Co., Ltd.) to obtain a dispersion.
  • a 0.1 wt% nonionic surfactant aqueous solution manufactured by Yamato Scientific Co., Ltd., Disperse using a “TOUCMIXER MT-31”
  • an ultrasonic cleaner ULTRASONIC CLEANER VS-150 manufactured by Velvo Crea Co., Ltd.
  • optical parameters required for evaluation based on the Mie theory are set in the software of the laser diffraction / scattering type particle size distribution measuring apparatus.
  • the measurement is performed at room temperature, and from the obtained data, the software of the laser diffraction / scattering type particle size distribution measuring apparatus is used to set the volume average particle size of the measurement target particle using the preset optical parameters.
  • the diameter (arithmetic mean diameter in the volume-based particle size distribution) is calculated.
  • the measurement target particle is a resin particle
  • the measurement was performed by inputting the refractive index of the polymer constituting the resin particle as the refractive index of the measurement target particle.
  • the polymer constituting the resin particles is polymethyl methacrylate or polyethyl methacrylate
  • the known refractive index 1.495 of polymethyl methacrylate and polyethyl methacrylate is input
  • the resin particles are In the case where the constituting polymer is polystyrene
  • a known polystyrene refractive index of 1.595 was input.
  • the particles to be measured are silica particles
  • measurement was performed by inputting a known refractive index of 1.45 of the silica particles as the refractive index of the particles to be measured.
  • the CV value of the resin particles and silica particles is obtained from the standard deviation ( ⁇ ) and the volume average particle size (D) of the volume-based particle size distribution measured by the volume average particle size measurement method of the resin particles and silica particles.
  • the following formula CV value (%) ( ⁇ / D) ⁇ 100 Calculated by
  • the observation with an optical microscope is not particularly problematic as long as it is an observation at a magnification at which the outline of the resin particles can be confirmed, but if the resin particles have a particle diameter of 5 ⁇ m, it is appropriate to observe at a magnification of about 500 times. .
  • the intermediate value of the refractive indexes of the two types of refractive liquid is set as the refractive index of the resin particles.
  • the intermediate value of the refractive indexes of these refractive liquids is 1.555. Was determined as the refractive index of the resin particles.
  • Glare is not visible: ⁇ (very good) Slight glare: ⁇ (Good) A lot of glare can be seen: x (defect) [Evaluation method of anti-glare performance of optical film] A bare straight tube fluorescent lamp (8000 cd / m 2 ) was placed so that the light was projected onto the optical film at an incident angle of 45 °, and the reflection of the fluorescent lamp when visually observed from the -45 ° direction. The degree was evaluated according to the following criteria, and this evaluation was regarded as the evaluation of antiglare performance.
  • the area of the entire wavelength region of 380 nm to 500 nm (the portion sandwiched between the 100% transmittance line and the horizontal axis in the wavelength region of 380 nm to 500 nm) is A, and 380 nm
  • B be the area of the transmittance of the optical film in the wavelength region of ⁇ 500 nm (the area of the portion sandwiched between the spectral transmittance curve of the optical film and the horizontal axis in the wavelength region of 380 nm to 500 nm).
  • Average light transmittance (%) (B / A) ⁇ 100
  • the b * value of the optical film was measured using a color difference meter “CR-400” (manufactured by Konica Minolta Optics) and a data processor “DP-400” (manufactured by Konica Minolta Optics). Specifically, first, a color difference meter “CR-400” and a data processor “DP-400” were connected. Next, after turning on the color difference meter “CR-400” and data processor “DP-400”, press the “color system” button on the data processor “DP-400” to set the display screen of the Yxy color system. did.
  • the calibration was performed by pressing the “calibration” button of the data processor “DP-400”.
  • place an optical film on the white calibration plate apply the measurement part of the color difference meter “CR-400” to the optical film, perform measurement, and click the “color system” button on the data processor “DP-400”. switch to the L * a * b * display screen of the color system press, read the b * value of the L * a * b * color system.
  • Example 1 (Manufacture of antiglare layer-forming coatings) Crosslinked polymethyl methacrylate particles having a volume average particle diameter of 0.5 ⁇ m as resin particles and a CV value of 12% (polymer of monomer mixture comprising 80% by weight of methyl methacrylate and 20% by weight of allyl methacrylate, refraction 1.495) 5 parts by weight (6 parts by weight with respect to 100 parts by weight of the binder resin), 85 parts by weight of pentaerythritol triacrylate (PETA) as the binder resin, and 1-hydroxycyclohexylphenyl as the photopolymerization initiator Mixing 0.5 parts by weight of a ketone (trade name “Irgacure (registered trademark) 184”, manufactured by BASF Japan Ltd.) and 68 parts by weight of toluene as a solvent, Obtained.
  • a ketone trade name “Irgacure (registered trademark) 184”, manufactured by BASF Japan Ltd.
  • Pigment-containing layer-forming paints 85 parts by weight of pentaerythritol triacrylate (PETA) as a binder resin and 0.17 parts by weight of an oil-soluble dye “DAA51” (manufactured by Yamada Chemical Co., Ltd.) as a first dye (based on 100 parts by weight of the binder resin) 0.2 part by weight), 0.5 part by weight of 1-hydroxy-cyclohexyl phenyl ketone (trade name “Irgacure (registered trademark) 184” manufactured by BASF Japan Ltd.) as a photopolymerization initiator, and toluene as a solvent 68 parts by weight of the mixture was mixed to obtain a pigment-containing layer-forming coating material that was a hard coat coating material.
  • PETA pentaerythritol triacrylate
  • DAA51 oil-soluble dye
  • 1-hydroxy-cyclohexyl phenyl ketone trade name “Irgacure (registered trademark)
  • the antiglare layer-forming paint On one side of a 125 ⁇ m thick PET film as a light-transmitting base film, the antiglare layer-forming paint was applied to a bar coater No.
  • the antiglare layer-forming coating material was dried by coating with 07 (manufactured by Daiichi Rika Co., Ltd.) and evaporating the solvent (toluene). Thereafter, the dried coating material for forming an anti-glare layer was cured by irradiating the dried coating material for forming an anti-glare layer with ultraviolet rays for 5 minutes using an ultraviolet irradiation device having an ultraviolet illuminance of 3 W / cm 2 . Thereby, the anti-glare layer which has the unevenness
  • the antiglare layer has a thickness of about 10 ⁇ m.
  • a pigment-containing layer-forming coating was applied to the other surface of the PET film with a bar coater No.
  • the pigment-containing layer-forming coating material was dried by coating with 07 (manufactured by Daiichi Rika Co., Ltd.) and evaporating the solvent (toluene). Thereafter, the dried pigment-containing layer-forming coating material was cured by irradiating the dried pigment-containing layer-forming coating material with ultraviolet rays for 5 minutes using an ultraviolet irradiation device having an ultraviolet illuminance of 3 W / cm 2 .
  • dye containing layer was formed as a hard-coat layer on the other surface of PET film, and the optical film of the 3 layer structure which consists of a glare-proof layer, a base film, and a pigment
  • the thickness of the dye-containing layer is about 10 ⁇ m.
  • the spectral transmittance of the obtained optical film is shown in FIG.
  • Example 2 As resin particles used in the antiglare layer-forming coating material, instead of the crosslinked polymethyl methacrylate particles having a volume average particle diameter of 0.5 ⁇ m and a CV value of 12%, the volume average particle diameter is 5 ⁇ m and the CV value is 10%.
  • cross-linked polymethyl methacrylate particles polymer of a monomer mixture consisting of 70% by weight of methyl methacrylate and 30% by weight of ethylene glycol methacrylate, refractive index 1.495
  • a film was obtained.
  • the spectral transmittance of the obtained optical film was almost the same as the spectral transmittance (FIG. 2) of the optical film obtained in Example 1.
  • Example 3 As resin particles used for the paint for forming the antiglare layer, instead of the crosslinked polymethyl methacrylate particles having a volume average particle diameter of 0.5 ⁇ m and a CV value of 12%, the volume average particle diameter is 1.0 ⁇ m and the CV value is 11 %
  • Crosslinked polystyrene particles monomer mixture polymer consisting of 95% by weight of styrene and 5% by weight of divinylbenzene, refractive index 1.595
  • the spectral transmittance of the obtained optical film was almost the same as the spectral transmittance (FIG. 2) of the optical film obtained in Example 1.
  • Example 4 As the first dye used in the paint for forming the dye-containing layer, instead of 0.17 part by weight of “DAA51”, 0.85 part by weight of oil-soluble dye “OIL YELLOW 186” (Chuo Synthetic Chemical Co., Ltd.) (binder resin 100) An optical film was obtained in the same manner as in Example 2 except that 1.0 part by weight) was used. The spectral transmittance of the obtained optical film is shown in FIG.
  • Example 5 In the same manner as in Example 4, except that the amount of “OIL YELLOW 186” used as the first dye was changed to 0.425 parts by weight (0.5 parts by weight with respect to 100 parts by weight of the binder resin), A film was obtained. The spectral transmittance of the obtained optical film is shown in FIG.
  • Example 6 Oil-soluble dye "TAP-18" as a blue second dye for the pigment-containing layer forming coating (tetraazaporphyrin compound having a maximum absorption wavelength at a wavelength of 593 nm, manufactured by Yamada Chemical Co., Ltd.) 0.17 weight
  • An optical film was obtained in the same manner as in Example 4, except that 0.2 part by weight (100 parts by weight of the binder resin and 20 parts by weight with respect to 100 parts by weight of the first dye) was added. The spectral transmittance of the obtained optical film is shown in FIG.
  • Example 7 Instead of 0.17 parts by weight of “DAA51” as the first dye, 0.85 parts by weight of “DAA51” as the first dye (1.0 part by weight with respect to 100 parts by weight of the binder resin) and the first As in Example 1, except that 0.43 parts by weight of “NAZ24” (manufactured by Yamada Chemical Co., Ltd., yellow dye) (0.5 parts by weight with respect to 100 parts by weight of the binder resin) is used. Thus, an optical film was obtained. The spectral transmittance of the obtained optical film is shown in FIG.
  • Example 8 Instead of 0.17 parts by weight of “DAA51” as the first dye, 1.7 parts by weight of “DAA51” as the first dye (2.0 parts by weight with respect to 100 parts by weight of the binder resin) and the first Optical film in the same manner as in Example 1 except that 0.85 parts by weight (1.0 part by weight with respect to 100 parts by weight of the binder resin) is used as the pigment of “NAZ24” (manufactured by Yamada Chemical Co., Ltd.). Got. The spectral transmittance of the obtained optical film is shown in FIG.
  • the optical film of Example 1 maintains a good total light transmittance close to the total light transmittance of the optical film of Comparative Example 1 containing no pigment, In addition, while maintaining good color reproducibility equivalent to that of the optical film of Comparative Example 1 containing no pigment, the average light absorptance at a wavelength of 380 nm to 500 nm can be remarkably improved, and an excellent blue light reduction effect can be obtained.
  • the average light absorptance at a wavelength of 380 nm to 500 nm can be remarkably improved, and an excellent blue light reduction effect can be obtained.
  • the optical film of Example 5 has a good total light beam that is close to the total light transmittance of the optical film of Comparative Example 2 that does not contain resin particles or silica particles. While maintaining the transmittance and maintaining good color reproducibility equivalent to that of the optical film of Comparative Example 2 containing neither resin particles nor silica particles, the antiglare performance could be remarkably improved.
  • the optical film of Example 6 containing the blue second dye is the same as the optical film of Example 4 containing no blue second dye.
  • the b * value is reduced while maintaining good total light transmittance close to the light transmittance and maintaining good color reproducibility equivalent to that of the optical film of Example 4 containing no blue second dye. And thus the yellowness could be suppressed.
  • the optical film of Example 7 having an average light absorption rate of 40% or less at a wavelength of 380 nm to 500 nm has an average light absorption rate of a wavelength of 380 nm to 500 nm.
  • the color reproducibility could be improved.
  • optical films of Examples 1 to 8 had good haze and pencil hardness, and could prevent the occurrence of glare.
  • Example 9 Instead of 5 parts by weight of crosslinked polymethyl methacrylate particles as resin particles, 1.6 parts by weight of silica particles having a volume average particle diameter of 8 ⁇ m and a CV value of 18% (1.9 parts by weight with respect to 100 parts by weight of binder resin) Part) and 7.0 parts by weight of silica particles having a volume average particle diameter of 2 ⁇ m and a CV value of 10% (8.2 parts by weight with respect to 100 parts by weight of the binder resin) (the CV value of the mixture is 30%) ), And instead of 0.85 parts by weight of “DAA51” and 0.43 parts by weight of “NAZ24”, 1.2 parts by weight of “YELLOW 93” (CI Solvent Yellow 93) (binder resin) 1.2 parts by weight) (1.5 parts by weight with respect to 100 parts by weight), 0.9 parts by weight of “NEO SUPER BLUE C-558” (manufactured by Chuo Synthetic Chemical Co., Ltd.) as the second blue dye (by 1.1 parts by weight to Zehn
  • Example 10 In addition to the first dye and the second dye, “ADEKA STAB (registered trademark) LA-F70” as an ultraviolet-visible light absorber (manufactured by ADEKA Corporation, 2,4,6-tris (2-hydroxy-4- An optical film was obtained in the same manner as in Example 9 except that 1 part by weight of hexyloxy-3-methylphenyl) -1,3,5-triazine) was used. The spectral transmittance of the obtained optical film is shown in FIG.
  • ADEKA STAB registered trademark
  • LA-F70 ultraviolet-visible light absorber
  • the optical films of Examples 9 and 10 maintain good color reproducibility equivalent to the optical film of Comparative Example 1 containing no pigment, and While ensuring a higher total light transmittance than the optical film of Comparative Example 1 that does not contain a dye, the average light absorptance at wavelengths of 380 nm to 500 nm can be remarkably improved and has an excellent blue light reduction effect. It was.
  • the optical films of Examples 9 and 10 are close to the total light transmittance of the optical film of Comparative Example 2 that does not contain resin particles or silica particles. While maintaining good total light transmittance and maintaining good color reproducibility equivalent to the optical film of Comparative Example 2 containing neither resin particles nor silica particles, the anti-glare performance could be remarkably improved. .
  • the optical films of Examples 9 and 10 containing silica particles have a wavelength as high as 380 nm, which is equivalent to the optical film of Example 2 containing resin particles. While maintaining an average light absorption rate of 500 nm, the b * value could be reduced and the yellowness of the optical film could be suppressed.
  • Example 9 [Correction 09.04.2014 based on Rule 91] Moreover, as can be seen from the comparison between Example 9 and Example 10, the optical film of Example 10 containing the ultraviolet-visible light absorber is compared with the optical film of Example 9 containing no ultraviolet-visible light absorber. The average light absorptance at a wavelength of 380 nm to 500 nm could be further improved, and the blue light reducing effect was further excellent.
  • Example 11 the optical film of the embodiment shown in FIG. 10 and FIG. 11 attached to a display having a display screen and a frame surrounding the display screen was produced.
  • a PET film with a thickness of 100 ⁇ m was used instead of a PET film with a thickness of 125 ⁇ m as a light-transmitting base film, and the antiglare layer described in Example 1 was obtained so that the resulting antiglare layer had a thickness of about 8 ⁇ m.
  • An antiglare layer was formed in the same manner as in Example 1 except that the coating for forming the glare layer was applied.
  • a reactive oligomer (trade name “CN985B88”, aliphatic urethane acrylate, bifunctional, manufactured by Sartomer, USA) as a binder resin and a reactive monomer (trade name “SR238F”, 1,6-hexane) 69 parts by weight of diol diacrylate, bifunctional, manufactured by Sartomer, USA) and 0.85 parts by weight of oil-soluble dye “OIL YELLOW 186” (manufactured by Chuo Synthetic Chemical Co., Ltd.) as the first dye (100 parts by weight of binder resin) 1.0 part by weight with respect to 100 parts by weight of oil-soluble dye “TAP-18” (manufactured by Yamada Chemical Co., Ltd.) as the second blue dye.
  • a reactive oligomer trade name “CN985B88”, aliphatic urethane acrylate, bifunctional, manufactured by Sartomer, USA
  • SR238F 1,6-hexane
  • the obtained pigment-containing layer-forming coating material was printed (coated) with an ink jet only on the portion corresponding to the display screen of the display on the other surface (back surface) of the PET film, and the ultraviolet illuminance was 3 W / cm.
  • the dried antiglare layer-forming coating material was cured by irradiating ultraviolet rays for 5 minutes with the ultraviolet irradiation device 2 .
  • a pigment-containing layer having a thickness of about 10 ⁇ m was formed on the other surface of the PET film.
  • a pressure-sensitive adhesive layer is formed by coating the other surface (back surface) of the pigment-containing layer and the portion of the PET film where the pigment-containing layer is not formed with a silicone pressure-sensitive adhesive to a thickness of 50 ⁇ m. did.
  • the target optical film provided with the 4 layer structure shown in FIG. 11 was obtained.
  • the spectral transmittance of the obtained optical film is shown in FIG.
  • the optical film of the present invention is disposed on a display screen of a display used as a display unit of a tablet personal computer, a display unit of a mobile phone (for example, a smart phone), a display unit of a notebook personal computer, a monitor for a personal computer, or the like. It is useful as an anti-glare film or a protective film that is disposed on a display screen of a display such as a liquid crystal display equipped with an LED as a light source.
  • the optical film of the present invention is also useful as an antiglare film or a protective film disposed on a lens of eyeglasses.

Abstract

L'invention concerne un film optique qui est apte à réduire de manière suffisante une lumière bleue, tout en maintenant une bonne luminosité d'image transmise lorsqu'il est agencé sur l'écran d'affichage d'un dispositif d'affichage. Ce film optique comprend un film de base de transmission de lumière et un film anti-éblouissement qui est formé sur au moins une surface du film de base qui contient des particules de résine. Ce film optique contient un colorant, et possède une absorbance optique moyenne de 5 % ou plus pour la plage de longueur d'onde de 380 à 500 nm. La transmittance de lumière totale du film optique est supérieure à la transmittance de lumière moyenne du film optique pour la plage de longueur d'onde de 380 à 500 nm. Ce film optique comprend de préférence un film de base de transmission de lumière (1), une couche anti-éblouissement (2) qui est formée sur une surface du film de base (1) et qui contient des particules de résine, et une couche à colorant (3) qui est formée sur l'autre surface du film de base (1) et qui contient un colorant.
PCT/JP2013/076382 2013-03-29 2013-09-27 Film optique WO2014155787A1 (fr)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015017152A (ja) * 2013-07-09 2015-01-29 住化ケムテックス株式会社 ブルーライトカット用樹脂組成物
JP2015079139A (ja) * 2013-10-17 2015-04-23 Dic株式会社 光学フィルム及び画像表示装置
CN104553196A (zh) * 2015-01-14 2015-04-29 广东小天才科技有限公司 一种复合护眼板和显示装置
JP2015194553A (ja) * 2014-03-31 2015-11-05 大日本印刷株式会社 ブルーライトカットフィルム、表示装置、及び、ブルーライトカットフィルム用樹脂組成物
JP2016114760A (ja) * 2014-12-15 2016-06-23 積水化成品工業株式会社 光学フィルム及びその用途
WO2016098713A1 (fr) * 2014-12-16 2016-06-23 横浜ゴム株式会社 Composition de résine durcissable par rayonnement ultraviolet, et stratifié
JP2016142942A (ja) * 2015-02-03 2016-08-08 住友化学株式会社 偏光板、液晶パネル及び液晶表示装置
JP2017003884A (ja) * 2015-06-12 2017-01-05 株式会社トッパンＴｏｍｏｅｇａｗａオプティカルフィルム 光学フィルム、これを用いた偏光板、タッチパネル、ディスプレイ部材及び表示装置
CN106886126A (zh) * 2015-12-16 2017-06-23 张家港康得新光电材料有限公司 非溶剂型的蓝膜组合物、未固化胶、蓝色基膜、其制备方法与其应用
JP2019045577A (ja) * 2017-08-30 2019-03-22 大日本印刷株式会社 光学フィルム、画像表示装置又はタッチパネル
KR20200001265U (ko) * 2017-11-14 2020-06-16 아이세이프, 엘엘씨 전자 장치용 광방출 감소 화합물
WO2020129931A1 (fr) * 2018-12-17 2020-06-25 株式会社トクヤマ Composition durcissable pour matériaux optiques, et matériau optique
CN112659679A (zh) * 2020-12-15 2021-04-16 福耀玻璃工业集团股份有限公司 一种能够调光或发光的隔紫外线防蓝光夹层玻璃
US11126033B2 (en) 2018-11-28 2021-09-21 Eyesafe Inc. Backlight unit with emission modification
US11592701B2 (en) 2018-11-28 2023-02-28 Eyesafe Inc. Backlight unit with emission modification
US11810532B2 (en) 2018-11-28 2023-11-07 Eyesafe Inc. Systems for monitoring and regulating harmful blue light exposure from digital devices
US11947209B2 (en) 2014-05-23 2024-04-02 Eyesafe Inc. Light emission reducing compounds for electronic devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002097383A (ja) * 2000-05-22 2002-04-02 Mitsubishi Chemicals Corp ディスプレイフィルター用スクアリリウム系色素及びこれを含有するディスプレイ用フィルター
JP2002131530A (ja) * 2000-08-18 2002-05-09 Mitsubishi Chemicals Corp 蛍光体発光型ディスプレイパネル用フィルター及びプラズマディスプレイパネル用フィルター
JP2008250129A (ja) * 2007-03-30 2008-10-16 Sekisui Plastics Co Ltd 光拡散フィルム
JP2008268331A (ja) * 2007-04-17 2008-11-06 Yamada Chem Co Ltd ディスプレイ用フィルタ及びその製造方法、プラズマディスプレイ用フィルタ、プラズマディスプレイ、液晶ディスプレイ用フィルタ及び液晶ディスプレイ。
JP2010078886A (ja) * 2008-09-25 2010-04-08 Fujifilm Corp 防眩フィルム、反射防止フィルム、偏光板および画像表示装置
WO2012165050A1 (fr) * 2011-06-02 2012-12-06 伊藤光学工業株式会社 Élément optique antireflet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030017326A1 (en) * 2001-06-01 2003-01-23 3M Innovative Properties Company Color stable pigmented polymeric films having dyes for color adjustment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002097383A (ja) * 2000-05-22 2002-04-02 Mitsubishi Chemicals Corp ディスプレイフィルター用スクアリリウム系色素及びこれを含有するディスプレイ用フィルター
JP2002131530A (ja) * 2000-08-18 2002-05-09 Mitsubishi Chemicals Corp 蛍光体発光型ディスプレイパネル用フィルター及びプラズマディスプレイパネル用フィルター
JP2008250129A (ja) * 2007-03-30 2008-10-16 Sekisui Plastics Co Ltd 光拡散フィルム
JP2008268331A (ja) * 2007-04-17 2008-11-06 Yamada Chem Co Ltd ディスプレイ用フィルタ及びその製造方法、プラズマディスプレイ用フィルタ、プラズマディスプレイ、液晶ディスプレイ用フィルタ及び液晶ディスプレイ。
JP2010078886A (ja) * 2008-09-25 2010-04-08 Fujifilm Corp 防眩フィルム、反射防止フィルム、偏光板および画像表示装置
WO2012165050A1 (fr) * 2011-06-02 2012-12-06 伊藤光学工業株式会社 Élément optique antireflet

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JP2015079139A (ja) * 2013-10-17 2015-04-23 Dic株式会社 光学フィルム及び画像表示装置
JP2015194553A (ja) * 2014-03-31 2015-11-05 大日本印刷株式会社 ブルーライトカットフィルム、表示装置、及び、ブルーライトカットフィルム用樹脂組成物
US11947209B2 (en) 2014-05-23 2024-04-02 Eyesafe Inc. Light emission reducing compounds for electronic devices
JP2016114760A (ja) * 2014-12-15 2016-06-23 積水化成品工業株式会社 光学フィルム及びその用途
WO2016098713A1 (fr) * 2014-12-16 2016-06-23 横浜ゴム株式会社 Composition de résine durcissable par rayonnement ultraviolet, et stratifié
JPWO2016098713A1 (ja) * 2014-12-16 2017-07-20 横浜ゴム株式会社 紫外線硬化型樹脂組成物および積層体
CN104553196A (zh) * 2015-01-14 2015-04-29 广东小天才科技有限公司 一种复合护眼板和显示装置
JP2016142942A (ja) * 2015-02-03 2016-08-08 住友化学株式会社 偏光板、液晶パネル及び液晶表示装置
JP2017003884A (ja) * 2015-06-12 2017-01-05 株式会社トッパンＴｏｍｏｅｇａｗａオプティカルフィルム 光学フィルム、これを用いた偏光板、タッチパネル、ディスプレイ部材及び表示装置
CN106886126B (zh) * 2015-12-16 2021-09-14 张家港康得新石墨烯应用科技有限公司 非溶剂型的蓝膜组合物、未固化胶、蓝色基膜、其制备方法与其应用
CN106886126A (zh) * 2015-12-16 2017-06-23 张家港康得新光电材料有限公司 非溶剂型的蓝膜组合物、未固化胶、蓝色基膜、其制备方法与其应用
JP7035381B2 (ja) 2017-08-30 2022-03-15 大日本印刷株式会社 光学フィルム、画像表示装置又はタッチパネル
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KR20200001265U (ko) * 2017-11-14 2020-06-16 아이세이프, 엘엘씨 전자 장치용 광방출 감소 화합물
JP7093528B2 (ja) 2017-11-14 2022-06-30 アイセーフ インコーポレイテッド 電子デバイス用スクリーンおよび光吸収フィルム
JP2021503100A (ja) * 2017-11-14 2021-02-04 アイセーフ，エルエルシー 電子デバイス用の光放出低減化合物
KR200495399Y1 (ko) * 2017-11-14 2022-05-12 아이세이프 잉크. 전자 장치용 광방출 감소 화합물
US11126033B2 (en) 2018-11-28 2021-09-21 Eyesafe Inc. Backlight unit with emission modification
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US11810532B2 (en) 2018-11-28 2023-11-07 Eyesafe Inc. Systems for monitoring and regulating harmful blue light exposure from digital devices
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US11976149B2 (en) 2018-12-17 2024-05-07 Tokuyama Corporation Curable composition for optical materials, and optical material
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