WO2019107923A1 - Film améliorant la visibilité pour un panneau d'affichage, et dispositif d'affichage le comprenant - Google Patents

Film améliorant la visibilité pour un panneau d'affichage, et dispositif d'affichage le comprenant Download PDF

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Publication number
WO2019107923A1
WO2019107923A1 PCT/KR2018/014841 KR2018014841W WO2019107923A1 WO 2019107923 A1 WO2019107923 A1 WO 2019107923A1 KR 2018014841 W KR2018014841 W KR 2018014841W WO 2019107923 A1 WO2019107923 A1 WO 2019107923A1
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WIPO (PCT)
Prior art keywords
display panel
film
visibility
fine particles
resin layer
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PCT/KR2018/014841
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English (en)
Korean (ko)
Inventor
서광석
이한나
장영래
변진석
신윤우
Original Assignee
주식회사 엘지화학
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.)
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Publication date
Priority claimed from KR1020180148331A external-priority patent/KR102215026B1/ko
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to CN201880076560.1A priority Critical patent/CN111405978B/zh
Priority to JP2020529207A priority patent/JP7015618B2/ja
Priority to US16/767,762 priority patent/US11639449B2/en
Priority to EP18883779.3A priority patent/EP3702147A4/fr
Publication of WO2019107923A1 publication Critical patent/WO2019107923A1/fr

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    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters

Definitions

  • the present invention relates to a visibility improving film for a display panel and a display device including the same.
  • the present invention relates to a visibility improving film for a display panel, and a display device including the same.
  • the present invention relates to a photocurable resin composition containing metal fine particles and inorganic oxide fine particles dispersed in a photocurable resin layer to increase the visibility of laser pointers, exhibit excellent physical and optical characteristics, And a display device including the same.
  • the display device has a light emission characteristic and there is no factor that can scatter the laser beam in addition to the specular reflection at a specific angle, 2019/107923 1 »(1 ⁇ 1 ⁇ 2018/014841
  • the present invention relates to a visibility improving film for a display panel which can exhibit excellent physical and optical characteristics while improving visibility of a laser pointer at a low cost in a display panel such as 1X1, 0, 01, 0, Device.
  • a photocurable resin layer provided on at least one side of the substrate
  • the photo-curable resin layer comprises metal fine particles having an average particle diameter of 0.5 to 5 and fine particles of an oxide fine particle having an average particle diameter of 0.5 to 5,
  • the present invention also provides a display device comprising a display panel and the above-described visibility improvement film for a display panel.
  • the visibility of the laser pointer deteriorated on the apparatus can be remarkably improved.
  • Such an effect can be obtained by applying the present invention in the form of a film to the outside of the display panel without changing the display driving method, the color filter inside the panel, the lamination structure, and the like, You can save.
  • the photocurable resin layer contains metal fine particles having an average particle diameter of 0.5 to 5 and fine particles of an oxide fine particle having an average particle diameter of 0.5 to 5_,
  • the display device of the present invention includes a visibility improvement film for a display panel and the above display panel.
  • " top surface " means a surface disposed facing the viewer when the film is mounted on the display panel, and " top " means a direction toward the viewer.
  • 'bottom' or 'bottom' refers to a face or orientation that is oriented toward the viewer's opposite side when the film is mounted on the display panel.
  • the haze value or the total haze value refers to a value obtained by dividing the haze value (3 ⁇ 4) measured on the film itself 2019/107923 1 »(1 ⁇ 1 ⁇ 2018/014841
  • This total haze value () is represented by the sum of the haze value resulting from the surface irregularities of the film and the haze value resulting from the particles included in the film and the like.
  • the term "internal haze value (P)" means a haze value attributed to particles contained in the film or the like, as described above. Specifically, this internal haze value is, in the film unevenness is formed on the surface, factors resulting from the surface roughness, that is to remove the surface haze, and then by attaching a transparent adhesive film to the film surface to remove surface roughness, the measured haze Lt; / RTI >
  • each layer or element when it is mentioned that each layer or element is formed on or “above " each layer or element, it means that each layer or element is formed directly on each layer or element, It is to be understood that other layers or elements may additionally be formed on the substrate, the object, and the substrate.
  • the present invention can be variously modified and may take various forms, and specific embodiments will be illustrated and described in detail below It will be understood by those skilled in the art that the present invention is not limited to the particular forms disclosed and that all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention are included therein.
  • the visibility improvement film and a display device including the same will be described in more detail. 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • a photocurable resin layer provided on at least one side of the substrate
  • a visibility improving film for a display panel is provided.
  • Tt is a transmittance value measured according to JIS K 7361 standard of 80 or more.
  • the visibility improvement film for a display panel formed using the coating composition of the present invention can exhibit characteristic scattering characteristics with respect to light in a wavelength range used in a laser pointer, thereby contributing to enhancement of the visibility of the laser pointer.
  • Such a visibility improving film for a display panel includes a cured product of a binder containing a photocurable functional group and fine metal particles and inorganic oxide fine particles dispersed in the photocurable binder.
  • Typical display panel films include glass, polyester such as polyethylene terephthalate (PET), polyethylene such as ethylene vinyl acetate (EVA), cyclic
  • PET polyethylene terephthalate
  • EVA ethylene vinyl acetate
  • the present invention relates to a process for producing a polymer composition comprising a polymer selected from the group consisting of a cyclic olefin polymer (COP), a cyclic olefin copolymer (COC), a polyacrylate (PAC), a polycarbonate (PC), a polyethylene Polymethyl methacrylate (PMMA), polyetheretherketone (PEEK), polyetheretherketone 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • a substrate made of polyethylenenaphthalate (PEN), polyetherimide (PEI), polyimide (PI), methyl methacrylate (MMA), fluorine resin or triacetylcellulose (TAC) Can be heard.
  • PEN polyethylenenaphthalate
  • PEI polyetherimide
  • PI polyimide
  • MMA methyl methacrylate
  • FAC triacetylcellulose
  • TAC triacetylcellulose
  • the photocurable resin layer may be formed on one side or both sides of the substrate. Particularly, when the resin layer is formed so as to observe the upper portion of the substrate, that is, the viewer's direction, the resin layer can also serve as a hard coating layer.
  • a coating composition is used which is formed by coating and ultraviolet curing on a substrate to form a photocurable resin layer, and laminated on at least one surface of the display panel to be used as a visibility improving film for a display panel .
  • the coating composition for producing a visibility improving film for a display panel of the present invention comprises a binder containing a photocurable functional group; Metal fine particles dispersed in the binder and having an average particle diameter of 0.5 to 5 /; Inorganic oxide fine particles dispersed in the binder and having an average particle size of 0.5 to 5; A photopolymerization initiator, and a solvent.
  • the binder containing the photocurable functional group is not particularly limited as long as it is a compound containing an unsaturated functional group capable of causing a polymerization reaction by ultraviolet rays. It is preferable that the binder contains a photocurable functional group such as a (meth) acrylate group, an allyl group, Or a compound containing a vinyl group.
  • the binder containing the photocurable functional group may be at least one selected from the group consisting of a polyfunctional acrylate-based monomer, a polyfunctional acrylate-based oligomer, and a polyfunctional acrylate-based elastic polymer have.
  • the polyfunctional acrylate-based monomer means a monomer containing two or more acrylate-based functional groups. More specifically, for example, a nucleic acid diol diacrylate), tripropylene glycol
  • Pentaerythritol tri (tetra) acrylate or dipentaerythritol hexaacrylate e.g. , the following coating compositions may be used, but the coating composition of the present invention is not limited thereto.
  • the polyfunctional acrylate monomer is crosslinked with each other to give a uniform pencil strength and abrasion resistance to the protective film.
  • the polyfunctional acrylate monomers may be used alone or in combination of two or more.
  • the multifunctional acrylate-based oligomer to the oligomer containing acrylate functional groups with two or more, a weight average molecular weight of about 1,000 to about 10,000 ⁇ 0, 1, or from about 1,000 to about 5,000 ⁇ 01, or from about 1,000 to about 3,000 ⁇ You can have a range of.
  • flexibility is further imparted to the polyfunctional acrylate oligomer by denaturation to increase the curling property and flexibility of the protective film.
  • the polyfunctional acrylate oligomer may be used alone or in combination of two or more.
  • the protective film formed by using the coating composition comprising the polyfunctional acrylate-based elastic polymer can ensure high elasticity or flexibility while securing mechanical properties, and can minimize curling or cracking.
  • Another example of the polyfunctional acrylate-based elastic polymer is a urethane-based acrylate polymer.
  • the urethane-based acrylate polymer has a form in which urethane-based acrylate oligomers are side-linked to the main chain of the acrylic polymer.
  • the coating composition may exhibit light scattering characteristics for laser pointers including metal fine particles. When the coating composition contains fine metal particles, the photocurable resin layer cured using the fine particles can effectively reflect / scatter the laser light used in the laser pointer, thereby enhancing visibility.
  • inorganic fine particles such as organic particles or metal oxides are often used in a coating composition because the particles have a high transmittance.
  • transmissive particles mainly cause light scattering by refraction and diffraction, while metal particles reflect light. More specifically, in the case of the transmissive particles, light scattering due to diffraction and refraction occurs continuously along the fine path through which light travels, thereby causing light to be scattered, resulting in a cloudy light. In the case of metal particles, without a transmission, because the light scattering caused by reflection, it does not is scattered along the path of the light generated in succession, and so the spread of light from occurring.
  • the contrast ratio of the display device is derived from the brightness of the image coming from the display panel and the difference in brightness due to the film. In the case of using the transmission type particles, the brightness of the film is increased by the particles, The contrast ratio is lowered. 2019/107923 1 »(: 1 ⁇ 3 ⁇ 42018 / 014841
  • the display panel film according to the embodiment of the present invention can improve the visibility of the laser pointer light by using the metal fine particles, and at the same time, realize a high contrast ratio.
  • the average particle diameter of the metal fine particles may be about 0.5 / ffli in terms of optimizing the scattering effect of light, and may be 5 < 1 > or less in terms of proper haze and coating thickness. More preferably from about 0.5 to about 3 m, or from about 1 to about 3 m.
  • the average particle diameter of the metal fine particles When the average particle diameter of the metal fine particles is too small, the effect of improving the visibility of the laser pointer light due to light scattering may be insignificant. When the average particle diameter of the metal fine particles is too large, protrusions are formed on the surface of the film, , The transmittance, and the like.
  • the average particle diameter of the metal fine particles can be determined by checking the particle diameters of all the metal fine particles contained in the resin layer, and the particle diameter of the metal fine particles can be confirmed on the cross section of the resin layer or the like. The average particle diameter of the fine particles can be also confirmed through the particle diameters of all the fine metal particles used in the production of the resin layer or their average particle diameters.
  • the metal microparticles may be a group of individual microparticles having an average particle diameter of 0.5 to 5, and the individual microparticles contained in the group may have a particle diameter of 0.1 to 25 ⁇ More specifically, 95%, or 99% of the individual fine particles contained in the group may have a particle size of 0.1 to 25 / L.
  • the metal satisfying these conditions at least one metal selected from the group consisting of aluminum, gold, silver, magnesium, platinum, copper, titanium, zirconium, nickel, tin and chromium,
  • the present invention is not necessarily limited thereto.
  • the metal fine particles when the total weight of the binder containing the photocurable functional group is 100 parts by weight, the metal fine particles may be added in an amount of about 0.1 to about 10 parts by weight, preferably about 0.5 to about 10 parts by weight Or from about 0.5 to about 5 parts by weight.
  • the effect of improving the visibility of the laser pointer may be insufficient, and if too much is included, the color reproducibility and brightness of the display device may be lowered and other physical properties of the coating composition may be lowered. desirable.
  • the upside coating composition may further include inorganic oxide fine particles to exhibit light scattering characteristics with respect to the laser pointer.
  • the coating composition contains inorganic oxide fine particles, the photocurable resin layer cured by using the inorganic oxide fine particles has a scattering property of light, and the scattering of the laser beam used in the laser pointer can increase the visibility.
  • the average particle diameter of the inorganic oxide fine particles may be about 0.05 or more in terms of optimizing the silver scattering effect and 10 < / RTI > or less in terms of appropriately decreasing the haze and coating thickness. More specifically, May range from about 1 to about 0 prn, preferably from about 1 to about 5, more preferably from about 1 to about.
  • the average particle diameter of the inorganic oxide fine particles When the average particle diameter of the inorganic oxide fine particles is too small, the anti-specular effect against the laser pointer light due to light scattering may be insignificant. If the average particle diameter exceeds 10, the haze may increase.
  • the average particle diameter of the inorganic oxide fine particles can be obtained by checking the particle diameters of all the inorganic oxide fine particles contained in the resin layer and the particle diameter of the inorganic oxide fine particles can be confirmed on the cross section of the resin layer, The particle size can also be confirmed through the particle diameters of all the inorganic oxide fine particles used in the production of the resin layer and the average particle diameter thereof.
  • the inorganic oxide fine particles may be a group of individual fine particles having an average particle diameter of 0.5 to 5, and the individual fine particles contained in this group may have a particle diameter of 0.1 to 25 ⁇ . More specifically, 95% or 99% of the individual fine particles contained in the group may have a particle size of 0.1 to 25 ⁇ 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • the inorganic oxide fine particles can be used without limitation of the constitution as long as they are of the kind used for forming the anti-glare film.
  • the inorganic oxide fine particles may be an oxide of at least one inorganic element selected from the group consisting of silicon, aluminum, titanium, zirconium, cerium, hafnium, niobium, tantalum, indium, tin, zinc, barium,
  • the present invention is not limited thereto.
  • the total content of the inorganic oxide fine particles is about 1 to about 30 parts by weight, preferably about 5 to about 30 parts by weight, more preferably about 5 to about 30 parts by weight, relative to 100 parts by weight of the binder containing the photocurable functional group 20 parts by weight.
  • the surface haze value due to external irregularities is not sufficiently realized, and if it is too large, the viscosity of the coating composition becomes high and the coating property becomes poor and the haze value due to external scattering becomes too large The contrast ratio may be lowered.
  • the refractive index difference between the inorganic oxide fine particles and the cured resin of the binder containing the photocurable functional group may be about 0.1 or less, preferably about 0.07 or less, more preferably about 0.05 or less . If the refractive index difference is too large, the internal scattering increases and the haze value increases, but the contrast ratio may decrease.
  • the weight ratio of the metal fine particles and the inorganic oxide fine particles contained in the photocurable resin layer may be about 1: 100 to about 1: 2 or about 1: 25 to about 1: 2.
  • the contrast ratio and the viewing angle may be lowered, and if the metal fine particles are included too much, the brightness and contrast ratio may be lowered.
  • the photopolymerization initiator included in the coating composition of the present invention include 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl- 4 - 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • Two or more different types may be used in combination.
  • the content of the photopolymerization initiator is not particularly limited.
  • the total weight of the binder containing the photopolymerizable functional group is preferably 100 wt%
  • the photo polymerization initiator may be included in an amount of about 0.1 to about 10 parts by weight.
  • organic solvent included in the coating composition of the present invention examples include alcohol solvents such as methanol, ethanol, isopropyl alcohol and butanol, alkoxy solvents such as 2-methoxyethanol, 2-ethoxyethanol and 1-methoxy-
  • a ketone solvent such as acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl propyl ketone, cyclohexanone, propylene glycol monopropyl ether, propylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether , Ether-based solvents such as ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethyl glycol monoethyl ether, diethyl glycol monopropyl ether, diethyl glycol monobutyl ether, diethylene glycol-2- Aromatic solvents such as benzene, toluene and xylene
  • the content of the organic solvent may be variously adjusted within a range that does not impair the physical properties of the coating composition, so that the amount of the organic solvent may be appropriately adjusted to 100 parts by weight of the binder containing the photocurable functional group 50 to about 200 parts by weight, preferably about 100 to about 200 parts by weight 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • the coating composition of the present invention may further include additives commonly used in the art to which the present invention belongs, in addition to the above-mentioned components, such as surfactants, antioxidants, stabilizers, leveling agents and antifouling agents.
  • the content of the coating composition may be varied within a range that does not deteriorate the physical properties of the coating composition of the present invention. Therefore, it may be included in an amount of about 0.1 to about 10 parts by weight based on 100 parts by weight of the total coating composition, have.
  • the thickness of the resin layer and the metal fine particles dispersed in the resin satisfy the following expression (5).
  • MW is a weight percentage (%) of the metal fine particles in the photocurable resin layer
  • I is the dry thickness (_) of the photocurable resin layer.
  • the metal fine particles generate light scattering by reflection without transmitting the laser pointer light, this characteristic can be adjusted according to the amount of the metal fine particles contained per unit area of the photocurable resin layer. Therefore, not only the simple content of the metal fine particles over the entire photo-curable resin layer but also the thickness of the coating layer can be an important factor.
  • the weight percentage of the metal fine particles in the photocurable resin layer and the dry thickness of the photocurable resin layer satisfy the above-described equation (5).
  • the dry thickness of the photo-curable resin layer is, Can have a thickness of, for example, from about 1 to about 10, or from about 1 to about 5, or from about 3 to about 5, and can exhibit appropriate optical and physical properties within such a thickness range have.
  • the visibility improving film for a display panel of the present invention can be formed by applying a coating composition to a transparent plastic substrate and photo-curing the same.
  • the method of applying the coating composition is not particularly limited as long as it can be used in the technical field to which the present technology belongs.
  • a bar coating method a knife coating method, a roll coating method, a blade coating method, a die coating method, Method, a comma coating method, a slot die coating method, a lip coating method, or a solution casting method.
  • a protective film can be formed by irradiating ultraviolet rays to the applied coating composition to perform photo-curing reaction.
  • the coating surface of the coating composition may be planarized and the solvent contained in the coating composition may be dried to volatilize the ultraviolet ray.
  • the dose of the ultraviolet ray may be, for example, about 20 to about 600 1 / (: 111 2 ).
  • To the ultraviolet irradiation light source and the like can be used as long as it can be used in the art to which the present technique is not particularly limited, and for example high-pressure mercury lamp, a metal halide lamp, a black light 0? 1 ⁇ 1 ⁇ ⁇ ⁇ fluorescent lamp .
  • the visibility improving film for a display panel of the present invention includes specific fine metal particles and inorganic oxide fine particles and can effectively reflect the laser light incident on the liquid crystal display by the laser pointer,
  • the visibility improving film for a display panel satisfies the following expression (1).
  • the gloss is 60 ((1) gloss value measured according to L 8787 standard, 10 or more and 50 or less ,
  • the visibility improving film for a display panel may have a relative visibility evaluation value represented by the following formula 2 of about 3 or more, preferably about 4 or more.
  • Mizu is a luminance value measured on the front surface when the visibility improving film for a display panel is bonded to a glass slide, placed on a black acrylic plate, and irradiated with the same eight lights in the normal direction of 45 °. 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • the visibility improving film for a display panel of the present invention has scattered / reflected light due to metal fine particles as compared with the case of using a general 11-curing type coating layer, , It is possible to realize an effect of raising about 60% or more, thereby remarkably improving the visibility of the laser pointer.
  • the visibility improving film for a display panel may have excellent optical properties, such as a brightness ratio value of about 80% or more, and preferably about 80 to about 95%, as expressed by the following equation (3).
  • Luminance ratio ⁇ 2 / show 2) * 100
  • Reference numeral 82 denotes a luminance value measured on the front surface when the visibility improving film for a display panel is bonded to a glass slide and then placed on a backlight surface.
  • the visibility improving film for a display panel may have a whitishness ratio value of about 3.3 or less, preferably about 3 or less, expressed by the following expression (4).
  • Show 3 has a transmittance of 80 to 100 measured according to the K 7361 standard, 118 K
  • the visibility improving film for a display panel may have an internal haze value of about 25% or less, preferably about 15% or about 5% to about 15%, measured according to 1187136 standard.
  • the transmittance and the haze characteristics vary depending on the introduced particles contained in the film. In general, the more the light scattering particles having similar optical characteristics are included, the lower the transmittance and the tendency to increase the haze have.
  • the reflection characteristic as described above is lower than that of the organic fine particles or the inorganic oxide fine particles which are generally used while lowering the transmittance to light.
  • the light transmittance value varies depending on the particle content, and when the transmittance is too high, there is a problem that the amount of particles for scattering or reflecting light is absolutely inadequate so that proper visibility can not be realized, When the display is low, visibility is good, but a contrast ratio and a brightness lowering problem occur, and the image quality of the image to be implemented by the display may be deteriorated.
  • the substrate on which the resin film is formed may be a glass or a transparent plastic resin which is usually used for a display panel.
  • polyesters such as polyethyleneterephtalate (PET), polyethylene such as ethylene vinyl acetate (EVA), cyclic olefin polymer (COP)
  • COC cyclic olefin copolymers
  • PAC polyacrylate
  • PC polycarbonate
  • PMMA polymethylmethacrylate
  • PEEK polyetheretherketone
  • PEN polyethylene naphthalate
  • PEI physical etherimide
  • PEI polyimide
  • PI methyl methacrylate
  • fluorocarbon resin or triacetylcellulose
  • the substrate may be a film comprising triacetylcellulose (TAC).
  • TAC triacetylcellulose
  • the thickness of the base material is not particularly limited as to meet a range of hardness and other physical properties of the film, it is possible to use a substrate having a thickness of about 20 to about lOOpm, or about 20 to about 60 // m.
  • the visibility improving film for a display panel of the present invention may have a pencil hardness of not less than HB, or not less than 1H, or not less than 2H at a load of 500 g.
  • the visibility improving film for a display panel comprises: a substrate; A resin layer provided on an upper portion of the substrate; And a functional coating layer formed on the resin layer, the antireflection layer and the antifogging layer.
  • the antireflection layer can be used for the antireflection effect of a conventional film for a display panel 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • an antireflection layer may be a general antireflection layer used in a conventional film for a display device or an optical film for a polarizing plate or the like, specifically, for example, an antireflection layer using an interference of light by forming a plurality of layers having different refractive indexes, (Anti reflection, AR) can be used without any particular limitation.
  • an anti-glare layer can be formed by using a method (Antiglare, AG) of imparting unevenness to the surface by dispersing a filler such as inorganic fine particles in the resin, without any particular limitation.
  • the functional coating layer is located at the top of the film.
  • the display panel is not particularly limited to a driving method, structure, and the like. Specifically, the display panel can be applied to an LCD panel, a PDP panel, or an OLED panel.
  • the visibility improving film for a display panel and the display panel may be laminated by using a separate adhesive or the like.
  • Usable adhesives are not particularly limited as long as they are known in the art.
  • a water-based adhesive a one-component or two-component polyvinyl alcohol (PVA) adhesive, a polyurethane adhesive, an epoxy adhesive, a styrene butadiene rubber adhesive (SBR adhesive), a hot melt adhesive
  • PVA polyvinyl alcohol
  • SBR adhesive styrene butadiene rubber adhesive
  • the present invention is not limited to these examples.
  • the resin layer may also serve as a pressure-sensitive adhesive layer, as described above.
  • the resin layer does not also serve as a pressure-sensitive adhesive layer, it is preferable that the surface of the substrate, on which the resin layer is not formed, , And 2019/107923 1 »(: 1 ⁇ 1 ⁇ 2018/014841
  • the resin layer is laminated so as to be positioned outward and a structure in which the side where the laser pointer is incident faces directly.
  • Metal fine particles Average particle size is about The aluminum particles were dispersed in toluene to prepare a dispersion liquid having a solid content of 20 wt% (hereinafter, metal dispersion liquid).
  • Inorganic oxide fine particles Nipsil SS-50B (12.6 parts by weight), Nipsil SS_ 5 0F (6 . 3 parts by weight) (Nippon Silica Industry, Ltd.) in toluene (81.1 were prepared by dispersion of the solid content 18.9% s dispersed in parts by weight) (hereinafter, the inorganic dispersion)
  • 6UA 23.5 parts by weight (hereinafter referred to as 6UA) of EBECRYL 1290 (Allnex), 6 parts by weight of a hexafunctional aliphatic urethane acrylate oligomer, 3 parts by weight of Irgacure 184 as a photopolymerization initiator (initiator) and 50 parts by weight of an additive Megaface F- (Hereinafter, referred to as additive), 24.5 parts by weight of 2-BuOH as an organic solvent and 24.5 parts by weight of methyl ethyl ketone (hereinafter referred to as MEK) were mixed to prepare 100 parts by weight of a binder composition.
  • additive Megaface F-
  • 2-BuOH 2-BuOH
  • MEK methyl ethyl ketone
  • the above-mentioned metal fine particle dispersion, inorganic oxide fine particle dispersion, and binder were mixed according to the composition shown in Table 1 below to prepare a coating composition. (About 200 mj / cm 2 ) and dried at a temperature of 90 ° C for 2 minutes and 30 seconds, and then dried at an average dry thickness of 5 / m < / RTI > for a display panel.
  • COMPARATIVE EXAMPLE 16 One hundred twenty-five films were prepared as comparative examples.
  • Tt transmittance
  • the haze value was measured.
  • the internal haze values were obtained by laminating an adhesive film (LG Chemical Co., Ltd., S7) on the upper surface of the visibility improving film for display panel prepared in Examples and Comparative Examples to eliminate the value due to surface unevenness, The protective film was peeled off and measured after the surface of the film was uneven. Measurement of luminance ratio:
  • the visibility improving film for a display panel of Comparative Example 16 was bonded to a glass slide using an adhesive film and placed on the upper surface of the LCD panel with power applied thereto.
  • the visibility improving film for a display panel of Comparative Example 16 was bonded to a glass slide using a pressure sensitive adhesive film and placed on a black acrylic plate.
  • the luminance value was measured at a height of 7 cm from the front,
  • the visibility improving film can suppress the specular reflection, thereby solving the inconvenience of the viewer, and can improve the visibility of the laser pointer light very effectively.
  • the specific haze value of the metal fine particles and the inorganic oxide fine particles are used within a certain range, the haze value of the film is relatively low, the transmittance value is extremely high, It was clearly confirmed that the whiteness value was relatively low and the luminance ratio value was high and the optical property was excellent as a whole and the selective visibility to the laser pointer light was improved.

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  • Laminated Bodies (AREA)

Abstract

La présente invention porte sur un film améliorant la visibilité destiné à un panneau d'affichage et un dispositif d'affichage le comprenant. Plus particulièrement, la présente invention concerne : un film améliorant la visibilité destiné à un panneau d'affichage, qui comprend de fines particules métalliques et de fines particules d'oxyde inorganique distribuées dans une couche de résine photodurcissable et peut ainsi augmenter la visibilité d'un pointeur laser, présente d'excellentes propriétés physiques et optiques, et en particulier empêche la réflexion spéculaire de la lumière provenant d'un pointeur laser; et un dispositif d'affichage comprenant le film améliorant la visibilité pour un panneau d'affichage.
PCT/KR2018/014841 2017-11-28 2018-11-28 Film améliorant la visibilité pour un panneau d'affichage, et dispositif d'affichage le comprenant WO2019107923A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880076560.1A CN111405978B (zh) 2017-11-28 2018-11-28 用于显示面板的可见性改善膜和包括其的显示装置
JP2020529207A JP7015618B2 (ja) 2017-11-28 2018-11-28 ディスプレイパネル用視認性改善フィルムおよびそれを含むディスプレイ装置
US16/767,762 US11639449B2 (en) 2017-11-28 2018-11-28 Visibility improving film for display panel and display device comprising same
EP18883779.3A EP3702147A4 (fr) 2017-11-28 2018-11-28 Film améliorant la visibilité pour un panneau d'affichage, et dispositif d'affichage le comprenant

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2017-0160635 2017-11-28
KR20170160635 2017-11-28
KR10-2018-0148331 2018-11-27
KR1020180148331A KR102215026B1 (ko) 2017-11-28 2018-11-27 디스플레이 패널용 시인성 개선 필름 및 이를 포함하는 디스플레이 장치

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WO2019107923A1 true WO2019107923A1 (fr) 2019-06-06

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002258011A (ja) * 2001-02-28 2002-09-11 Asahi Glass Co Ltd 光拡散シートおよびその製造方法
KR20040092478A (ko) * 2003-04-24 2004-11-03 닛뽄세이시가부시끼가이샤 방현 필름
KR20080004907A (ko) * 2006-07-07 2008-01-10 주식회사 두산 복합입자를 포함하는 방현필름 및 그 제조방법
KR20150144724A (ko) * 2014-06-17 2015-12-28 주식회사 엘지화학 우수한 고명암비 눈부심 방지 코팅 조성물 및 이를 이용한 눈부심 방지 필름
KR20170091163A (ko) * 2014-12-22 2017-08-08 제이엑스티지 에네루기 가부시키가이샤 시트상 투명 성형체, 그것을 구비한 투명 스크린, 및 그것을 구비한 화상 투영 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002258011A (ja) * 2001-02-28 2002-09-11 Asahi Glass Co Ltd 光拡散シートおよびその製造方法
KR20040092478A (ko) * 2003-04-24 2004-11-03 닛뽄세이시가부시끼가이샤 방현 필름
KR20080004907A (ko) * 2006-07-07 2008-01-10 주식회사 두산 복합입자를 포함하는 방현필름 및 그 제조방법
KR20150144724A (ko) * 2014-06-17 2015-12-28 주식회사 엘지화학 우수한 고명암비 눈부심 방지 코팅 조성물 및 이를 이용한 눈부심 방지 필름
KR20170091163A (ko) * 2014-12-22 2017-08-08 제이엑스티지 에네루기 가부시키가이샤 시트상 투명 성형체, 그것을 구비한 투명 스크린, 및 그것을 구비한 화상 투영 장치

Non-Patent Citations (1)

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Title
See also references of EP3702147A4 *

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