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WO2015030428A1 - Stratifié optique antireflet - Google Patents

Stratifié optique antireflet Download PDF

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Publication number
WO2015030428A1
WO2015030428A1 PCT/KR2014/007789 KR2014007789W WO2015030428A1 WO 2015030428 A1 WO2015030428 A1 WO 2015030428A1 KR 2014007789 W KR2014007789 W KR 2014007789W WO 2015030428 A1 WO2015030428 A1 WO 2015030428A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
optical laminate
high refractive
meth
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/007789
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English (en)
Korean (ko)
Inventor
임거산
이성철
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongwoo Fine Chem Co Ltd
Original Assignee
Dongwoo Fine Chem Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongwoo Fine Chem Co Ltd filed Critical Dongwoo Fine Chem Co Ltd
Publication of WO2015030428A1 publication Critical patent/WO2015030428A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state

Definitions

  • the present invention relates to an antireflective optical laminate, and more particularly, to include a high refractive optical luminescence layer and a low refractive layer, in addition to improving the visibility of the laser pointer when pointing the laser pointer directly to a display.
  • An optical laminated body which shows antireflection property.
  • liquid crystal displays LCDs
  • plasma displays PDPs
  • LCDs liquid crystal displays
  • PDPs plasma displays
  • the present invention has been made to solve the above problems, and one object of the present invention is not only to improve the visibility of the laser pointer when pointing the laser pointer directly to the display but also to provide an optical laminate exhibiting antireflection. It is.
  • Another object of the present invention is to provide an image display device including the optical laminate.
  • the present invention provides an antireflective optical laminate comprising a high refractive optical luminescence layer formed on a substrate and a low refractive layer formed on the high refractive optical luminescence layer.
  • the high refractive optical luminescence layer has a refractive index of 1.54 to 1.70, and the low refractive layer has a refractive index of 1.10 to 1.40.
  • the present invention provides an image display device comprising the antireflective optical laminate.
  • the antireflective optical laminate is attached to any one surface of the display panel.
  • the antireflective optical laminate of the present invention includes a high refractive optical luminescence layer and a low refractive index layer, which not only improves the visibility of the laser pointer when pointing the laser pointer directly to the display, but also exhibits an antireflection performance improvement effect. .
  • the antireflective optical laminate according to one embodiment of the present invention includes a high refractive optical luminescence layer formed on a substrate and a low refractive layer formed on the high refractive optical luminescence layer.
  • the high refractive optical luminescence layer has a refractive index of 1.54 to 1.70 specifically, and includes an optical luminescence material to emit light by stimulation due to light, so that when the laser pointer is directly pointed on the display, it is caused by the light of the laser pointer. A part emits light and can improve the visibility of a laser pointer.
  • the low refractive index layer has a refractive index of specifically 1.10 to 1.40, and exhibits an antireflection performance improving effect due to a difference in refractive index with a high refractive optical luminescence layer.
  • the high refractive optical luminescence layer may be formed by applying a composition for forming a high refractive optical luminescence layer to a substrate.
  • composition for forming a high refractive light luminescence layer of the present invention may include a high refractive light luminescence material, a light transmitting resin, an initiator, and a solvent.
  • the photo luminescence material refers to a material that is stimulated by light to emit light by itself.
  • the said photo luminescence substance is not specifically limited, For example, an photo luminescence pigment, a photo luminescence dye, etc. are mentioned. These can be used individually or in mixture of 2 or more types.
  • photoluminescent pigments examples include organic fluorescent pigments and inorganic fluorescent pigments.
  • photoluminescent dye examples include stilbene derivative dyes, imidazole derivative dyes, benzoimidazole dyes, coumarin derivative dyes, and benzidine dyes.
  • the photo luminescent pigments and dyes may be used in the form of a solid, liquid, powder, etc., preferably may be a powder.
  • the photo luminescent powder may include, for example, a lanthanide complex, an organic phosphor, an inorganic phosphor, and the like, and preferably, a lanthanide complex.
  • the lanthanide complex is a compound containing a lanthanide metal element, and the lanthanide metal element is not particularly limited, and may be, for example, europium, turbium, disprosium, samarium, and the like. It may be europium.
  • Examples of the europium complex include tris (dibenzoylmethane) mono (1,10-phenanthroline) uropium (III) (hereinafter Eu (DBM) 3 Phen) and tris (dynaphthylmethane) mono. (1,10-phenanthroline) europium (III) (henceforth Eu (DNM) 3 Phen) etc. are mentioned.
  • the lanthanide complexes exemplified above may be used alone or in combination of two or more thereof.
  • the maximum excitation wavelength of the photo luminescent material is related to the wavelength of the laser light of the laser pointer and is preferably in the range of 100 nm to 450 nm. If the wavelength of the light is less than 100nm, since it is a light source in the X-ray region, there is a problem that is harmful to the human body when the light source is exposed to the human body. Visibility may be lowered.
  • the maximum excitation wavelength means the wavelength of the excitation light whose fluorescence intensity is the largest value in the fluorescence spectrum measured while changing the wavelength of the excitation light.
  • the content of the optical luminescence material is not particularly limited, and may be included, for example, in an amount of 0.01 to 90 parts by weight based on 100 parts by weight of the total composition for forming an optical luminescence layer, and preferably included in an amount of 0.03 to 50 parts by weight. Can be.
  • the content of the photo luminescence material is 0.01 to 90 parts by weight, it is possible to produce a sufficient photo luminescence effect, other components may be included in an appropriate content to maintain the appropriate hardness.
  • the light transmissive resin may be a photocurable resin
  • the photocurable resin may include a photocurable (meth) acrylate oligomer and / or a monomer.
  • photocurable (meth) acrylate oligomer epoxy (meth) acrylate, urethane (meth) acrylate, etc. can be used, for example, urethane (meth) acrylate is preferable.
  • the urethane (meth) acrylate can be prepared by reacting a polyfunctional (meth) acrylate having a hydroxy group in a molecule with a compound having an isocyanate group in the presence of a catalyst.
  • Specific examples of the (meth) acrylate having a hydroxy group in the molecule include 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, A caprolactone ring-opening hydroxyacrylate, a pentaerythritol tri / tetra (meth) acrylate mixture, a dipentaerythritol penta / hexa (meth) acrylate mixture, etc.
  • the compound having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane, 1, 5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis (isocyanatomethyl) cyclohexane, trans-1,4-cyclohexene diisocyanate, 4,4 '-Methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene-1, 3-diisocyanate, 1,4-diisocyanatobutane, 1,6
  • the said monomer is not specifically limited,
  • the monomer which has unsaturated groups such as a (meth) acryloyl group, a vinyl group, a styryl group, an allyl group, in a molecule
  • numerator can be used as a photocurable functional group, and a (meth) acryloyl group
  • the monomer which has is preferable.
  • the monomer having a (meth) acryloyl group examples include neopentyl glycol acrylate, 1,6-hexanediol (meth) acrylate, propylene glycol di (meth) acrylate, and triethylene glycol di (meth) acryl Rate, dipropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylol ethane tri (meth) acrylate , 1,2,4-cyclohexane tetra (meth) acrylate, pentaglycerol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol tri (meth) Acrylate, dipentaerythr
  • the above-mentioned photocurable (meth) acrylate oligomer and monomer can be used individually or in mixture of 2 or more types, respectively.
  • the light-transmissive resin is not particularly limited, but may be included in an amount of 0.5 to 80 parts by weight based on 100 parts by weight of the total composition for forming the photoluminescence layer. If the content of the light-transmissive resin is less than 0.5 parts by weight, it is difficult to achieve sufficient hardness, and when it exceeds 80 parts by weight, curling becomes severe.
  • the initiator may be used in the art without limitation. Specifically as the initiator, 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1, diphenyl ketone benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenyl -1-one, 4-hydroxycyclophenyl ketone, dimethoxy-2-phenylacetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-knoloacetophenone, 4, 4-dimethoxy acetophenone, 4, 4- diamino benzophenone, 1-hydroxycyclohexyl phenyl ketone, benzophenone, etc. are mentioned, These can be used individually or in mixture of 2 or more types.
  • the initiator is not particularly limited, but may be used in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the total composition for forming the photoluminescence layer. If the content of the initiator is less than 0.1 parts by weight, the curing rate is slow, and if it exceeds 10 parts by weight, cracks may occur due to over curing.
  • the solvent can be used without limitation to those used in the art.
  • the solvent is alcohol-based (methanol, ethanol, isopropanol, butanol, methylcellulose, ethyl solusorb, etc.), acetate-based (ethyl acetate, propyl acetate, butyl acetate, methyl cellosolve acetate, ethyl cellosolve Acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, methoxypentyl acetate, etc., ketones (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone , Diethyl ketone, dipropyl ketone, cyclohexanone and the like), hexane type (hexane, heptane,
  • the content of the solvent is not particularly limited, but may be included in an amount of 10 to 98 parts by weight based on 100 parts by weight of the total composition for forming the photoluminescence layer. If the solvent is less than 10 parts by weight based on the above standard, the viscosity is high, workability is lowered, and if it exceeds 98 parts by weight, it takes a long time in the drying process and there is a problem of low economic efficiency.
  • the composition for forming an optical luminescence layer according to the present invention includes additives such as curing agents, leveling agents, adhesion promoters, antioxidants, and the like, which are commonly used in the art, in addition to the above components; Strength reinforcing nano silicas, inorganic nanoparticles and phos (polyhedral oligomeric silsesquioxanes); Antistatic conductive polymers, nanoparticles and ionic liquids; It may further include organic particles for imparting antiglare properties, inorganic particles.
  • the substrate is not particularly limited as long as the substrate is durable and allows the user to see the display well, and materials used in the art may be used without particular limitation.
  • materials used in the art may be used without particular limitation.
  • glass polyethersulphone (PES), polyacrylate (PAR, polyacrylate), polyetherimide (PEI, polyetherimide), polyethylene naphthalate (PEN, polyethylene naphthalate), polyethylene terephthalate (PET, polyethylene) terephthalate, polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC, polycarbonate), cellulose triacetate (TAC), cellulose acetate propionate (CAP, cellulose acetate propionate) may be used.
  • PES polyethersulphone
  • PAR polyacrylate
  • PEI polyetherimide
  • PEN polyethylene naphthalate
  • PET polyethylene terephthalate
  • PPS polyphenylene sulfide
  • PC polycarbonate
  • composition for forming an optical luminescence layer according to the present invention may be applied onto a substrate and cured to form an optical luminescence layer, which may be subjected to a drying step if necessary prior to curing.
  • the coating method is not particularly limited and may be a method commonly used in the art, for example, a fountain coating method, a die coating method, a spin coating method, a spray coating method, a gravure coating method, a roll coating method, a bar Coating method and the like.
  • a drying method is not specifically limited, For example, it can be based on methods, such as natural drying, hot air drying, heat drying, and the like.
  • the hardening method is not specifically limited, For example, it can be based on methods, such as ultraviolet curing and ionizing radiation hardening. Although various active energy can be used for the means, it is more preferable to use ultraviolet rays.
  • an energy source a high pressure mercury lamp, a halogen lamp, a xenon lamp, a metal halide lamp, a nitrogen laser, an electron beam accelerator, a radioactive element, etc. are preferable, for example.
  • As for the irradiation amount of an energy source 50-5000mJ / cm ⁇ 2> is preferable as an integrated exposure amount in an ultraviolet-A area
  • Hardening becomes more enough that the irradiation amount is 50 mJ / cm ⁇ 2> or more, and the hardness of the photoluminescent layer formed becomes more sufficient. Moreover, if it is 5000 mJ / cm ⁇ 2> or less, coloring of the photoluminescent layer formed can be prevented, and transparency can be improved.
  • the present invention by coating a low refractive index layer on the high refractive light luminescence layer, it is possible to prevent the reflection of external light to ensure excellent display visibility at the same time.
  • the material for forming the low refractive index layer can be used without limitation in the art, for example, resin-based materials such as ultraviolet curing acrylic resin, mesoporous silica particles in the resin, hollow silica particles
  • resin-based materials such as ultraviolet curing acrylic resin, mesoporous silica particles in the resin, hollow silica particles
  • a material containing mesoporous or hollow, spherical silicon oxide ultrafine particles can be used. It is preferable that an average particle diameter is about 5-300 nm, and, as for the said silicon oxide ultrafine particle, the range of 10-200 nm is more preferable.
  • the low refractive layer forming material may be applied onto the photoluminescent layer and cured to form a low refractive layer, and may be dried as necessary prior to curing.
  • the coating, drying and curing methods may be the same method as used for forming the photo luminescence layer.
  • the optical laminate according to one embodiment of the present invention may further include at least one optical functional layer.
  • an optical functional layer may be, for example, a hard coating layer, a polarizer, a polarizer protective layer, an anti-fingerprint layer, a retardation layer, an antistatic layer, or the like.
  • the lamination order thereof is not particularly limited and may be appropriately selected, for example, may be formed under an optical luminescence layer, or may be formed on the opposite side of the substrate.
  • the optical laminate according to one embodiment of the present invention may further include a hard coating layer between the substrate and the high refractive optical luminescence layer.
  • One Embodiment of this invention provides the polarizing plate containing the said optical laminated body.
  • One embodiment of the present invention provides an image display device including the optical laminate.
  • An image display apparatus includes the optical laminate attached to any one surface of a display panel.
  • the type of the image display device is not particularly limited, and may be, for example, a liquid crystal display device, a plasma display device, an electroluminescent display device, a cathode ray tube display device, or the like.
  • the display panel is not particularly limited, and may be a configuration commonly used in the art, and may further include a configuration commonly used in the art.
  • Pentaerythritol triacrylate 1.7 parts by weight, high refractive optical luminescence material (Eu (DBM) 3 Phen) 0.3 parts by weight, 48.8 parts by weight of ethyl acetate, 48.8 parts by weight of butyl acetate, photoinitiator (1-hydroxycyclohexylphenyl ketone) 0.2 part by weight and 0.2 part by weight of leveling agent (BYK3530) were blended using a stirrer and filtered using a filter made of PP material to prepare a composition for forming a high refractive photoluminescence layer (refractive index 1.56).
  • Eu (DBM) 3 Phen high refractive optical luminescence material
  • BYK3530 leveling agent
  • a highly refractive photoluminescent composition (refractive index 1.58) was prepared in the same manner except that 1.4 parts by weight of pentaerythritol triacrylate and 0.6 parts by weight of a high refractive optical luminescence material (Eu (DBM) 3 Phen) were changed. .
  • a highly refractive photoluminescent composition (refractive index 1.62) was prepared in the same manner except that 1 part by weight of pentaerythritol triacrylate and 1 part by weight of a high refractive optical luminescence material (Eu (DBM) 3 Phen) were prepared. .
  • a highly refractive photo luminescent composition (refractive index 1.66) was prepared in the same manner except that 0.6 parts by weight of pentaerythritol triacrylate and 1.4 parts by weight of high refractive optical luminescence material (Eu (DBM) 3 Phen) were changed. .
  • the hard coating layer-forming composition obtained in Preparation Example 1 was coated on a 40 um triacetyl cellulose film to have a thickness of 5 um after curing, and then the solvent was dried at a temperature of 70 degrees for 2 minutes. The dried film was irradiated with UV with an integrated light amount of 400 mJ / cm 2 to form a hard coating layer.
  • An antireflective optical laminate was prepared in the same manner as in Example 1, except that the composition of Preparation Example 3 was used to form a high refractive photoluminescence layer.
  • An antireflective optical laminate was prepared in the same manner as in Example 1, except that the composition of Preparation Example 4 was used to form a high refractive photoluminescence layer.
  • An antireflective optical laminate was prepared in the same manner as in Example 1, except that the composition of Preparation Example 5 was used to form the high refractive photoluminescence layer.
  • a film was prepared in the same manner as in Example 1 except for the process of forming the high refractive photoluminescence layer.
  • Films were prepared in the same manner as in Example 1 except that a high refractive coating solution (refractive index 1) having no photoluminescence function was used to form a high refractive photoluminescence layer.
  • a high refractive coating solution reffractive index 1 having no photoluminescence function
  • the 12-degree specular reflectance of the coated surface was UV-Vis. After measuring through the reflectance measuring instrument (UV2450, Shimadzu Corporation), it converted into luminous reflectance Y (%).
  • the display After attaching the optical laminate or film to the upper surface of the display panel, the display was switched to the white mode and the visibility of the laser pointer was evaluated in front of the panel when the 405 nm laser pointer was shined at the panel at a 60 degree angle.
  • ⁇ The position of the laser pointer can be recognized.
  • the antireflective optical laminate according to the present invention obtained in Examples 1 to 4 had a low refractive index by forming a low refractive layer on the high refractive optical luminescence layer, and the visibility of the laser pointer was excellent.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne : un stratifié optique antireflet comprenant une couche de photoluminescence à forte réfraction formée sur un substrat et une couche à faible réfraction formée sur la couche de photoluminescence à forte réfraction ; et un dispositif d'affichage d'image le comprenant. Le stratifié optique selon la présente invention peut non seulement améliorer la visibilité d'un pointeur laser, mais également améliorer la performance antireflet lorsqu'un utilisateur vise un objet directement sur un afficheur en utilisant le pointeur laser.
PCT/KR2014/007789 2013-08-27 2014-08-21 Stratifié optique antireflet Ceased WO2015030428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0101555 2013-08-27
KR20130101555A KR20150024548A (ko) 2013-08-27 2013-08-27 반사방지 광학 적층체

Publications (1)

Publication Number Publication Date
WO2015030428A1 true WO2015030428A1 (fr) 2015-03-05

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WO (1) WO2015030428A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107850692A (zh) * 2015-09-11 2018-03-27 株式会社Lg化学 防反射膜和显示设备
WO2019107928A1 (fr) * 2017-11-28 2019-06-06 주식회사 엘지화학 Film à visibilité améliorée pour panneau d'affichage et dispositif d'affichage le comprenant
CN111708211A (zh) * 2020-06-12 2020-09-25 惠州市华星光电技术有限公司 显示面板及显示装置
WO2021097984A1 (fr) * 2019-11-19 2021-05-27 深圳市华星光电半导体显示技术有限公司 Dispositif d'affichage
CN117247726A (zh) * 2023-09-15 2023-12-19 无锡拓辉新材料科技有限公司 一种光学复合涂层及其制备方法和应用

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* Cited by examiner, † Cited by third party
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WO2017043948A1 (fr) * 2015-09-11 2017-03-16 주식회사 엘지화학 Film anti-reflet et dispositif d'affichage
TWI768910B (zh) * 2021-05-20 2022-06-21 方略電子股份有限公司 顯示裝置

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107850692A (zh) * 2015-09-11 2018-03-27 株式会社Lg化学 防反射膜和显示设备
CN107850692B (zh) * 2015-09-11 2020-06-16 株式会社Lg化学 防反射膜和显示设备
WO2019107928A1 (fr) * 2017-11-28 2019-06-06 주식회사 엘지화학 Film à visibilité améliorée pour panneau d'affichage et dispositif d'affichage le comprenant
US11525048B2 (en) 2017-11-28 2022-12-13 Lg Chem, Ltd. Visibility improving film for display panel and display device comprising same
WO2021097984A1 (fr) * 2019-11-19 2021-05-27 深圳市华星光电半导体显示技术有限公司 Dispositif d'affichage
CN111708211A (zh) * 2020-06-12 2020-09-25 惠州市华星光电技术有限公司 显示面板及显示装置
CN117247726A (zh) * 2023-09-15 2023-12-19 无锡拓辉新材料科技有限公司 一种光学复合涂层及其制备方法和应用

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