WO2016104979A1 - 점착제 조성물, 이로부터 형성된 점착필름 및 이를 포함하는 디스플레이 부재 - Google Patents
점착제 조성물, 이로부터 형성된 점착필름 및 이를 포함하는 디스플레이 부재 Download PDFInfo
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- WO2016104979A1 WO2016104979A1 PCT/KR2015/013049 KR2015013049W WO2016104979A1 WO 2016104979 A1 WO2016104979 A1 WO 2016104979A1 KR 2015013049 W KR2015013049 W KR 2015013049W WO 2016104979 A1 WO2016104979 A1 WO 2016104979A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
- B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
Definitions
- the present invention relates to an adhesive composition, an adhesive film formed therefrom, and a display member including the same.
- the transparent adhesive film is an adhesive film, which is used for interlayer adhesion for laminating components in an optical display device or touch screen attachment of a mobile phone.
- the capacitive touchpad of the optical display device is attached to a window or a film by an adhesive film, thereby exhibiting characteristics by detecting a change in capacitance of the window or film.
- the adhesive film is laminated between the window glass and the TSP sensor glass.
- the transparent adhesive film transmits more than 97% of light and functions as glass, but has the advantage of increasing the screen clarity and good adhesiveness compared to the conventional double-sided tape.
- the transparent adhesive film may be used not only for mobile phones but also for tablet PCs and TVs having a large and large display screen.
- An object of the present invention is to provide a pressure-sensitive adhesive composition, a pressure-sensitive adhesive film formed therefrom, and a display member including the same, while maintaining excellent viscoelastic properties and excellent recovery properties in a wide temperature range.
- Another object of the present invention is to provide an adhesive composition having high transparency and excellent reliability under severe conditions, an adhesive film formed therefrom, and a display member including the same.
- a pressure-sensitive adhesive composition is a monomer mixture comprising a (meth) acrylate having a hydroxyl group and a comonomer, and a composition comprising nanoparticles, the nanoparticles comprise a silicone-based polymer, the average particle diameter is about 5 nm to about 800 nm.
- the pressure-sensitive adhesive film may be formed of the pressure-sensitive adhesive composition.
- the display member may include an optical film and any one of the above adhesive film on one side or both sides of the optical film.
- the present invention has excellent adhesive strength, viscoelastic properties are maintained in a wide temperature range, excellent recovery properties, high transparency, excellent reliability under severe conditions, pressure-sensitive adhesive film formed therefrom and a display member comprising the same Has the effect of providing.
- FIG. 1 is a cross-sectional view of a display member of one embodiment of the present invention.
- FIG. 2 is a conceptual diagram of a specimen for measuring T-peel peel strength.
- FIG 3 is a cross-sectional view and a plan view of a specimen for measuring the recovery force.
- (meth) acrylate may mean acrylate and / or methacrylate.
- copolymer may include oligomers, polymers or resins.
- nonomer is a monomer that polymerizes with (meth) acrylate having a hydroxyl group, and is not limited as long as it is capable of polymerization with (meth) acrylate having a hydroxyl group.
- (meth) acrylic copolymer may mean a copolymer of an acrylic monomer mixture and nanoparticles.
- the "glass transition temperature" of the monomer may refer to the glass transition temperature measured by DSC measurement of TA Instrument for the homopolymer of the monomer to be measured. Specifically, the temperature of the monomer to be measured is raised to about 100 ° C. at a rate of about 20 ° C./min, and then cooled to about ⁇ 180 ° C. at the same rate, and then about 100 at a rate of about 10 ° C./min. After obtaining the data of the endothermic transition curve when heated to °C, the inflection point of the endothermic transition curve can be determined as the glass transition temperature.
- average particle diameter is a particle diameter of nanoparticles expressed in Z-average values measured in an aqueous solvent or an organic solvent using a Zetasizer nano-ZS device manufactured by Malvern.
- core-shell structure may mean a conventional core-shell structure, and also includes a structure in which the core or the shell is several layers, and the “outer layer” refers to the outermost layer of the various layers.
- core-shell particles is meant nanoparticles having a core-shell structure.
- T-peel peel strength for corona treated polyethylene terephthalate (PET) film means a value measured by the measuring method of the following i) ⁇ v).
- the pressure-sensitive adhesive composition is applied to a release treated PET (polyethylene terephthalate) film, and irradiated with an ultraviolet light amount of about 2000 mJ / cm 2 to prepare a pressure-sensitive adhesive film and a pressure-sensitive adhesive sheet of about 100 ⁇ m thickness.
- PET film of about 150 mm ⁇ 25 mm ⁇ 75 ⁇ m (width ⁇ length ⁇ thickness) subjected to about 2 corona treatments (total dose: about 156 doses) while discharging at a dose of about 78 doses using a corona treatment machine.
- T-peel peel strength is measured by fixing one PET film on the TA.XT_Plus Texture Analyzer and pulling the other PET film at a speed of about 50 mm / min. (See FIG. 2 (b))
- T-peel peel strength against corona treated polyethylene terephthalate (PET) film means that the PET film of ii) of the measuring method is not subjected to corona treatment. Except for the “t-peel peel strength of the corona treated polyethylene terephthalate (PET) film” means the peel strength measured in the same manner as the measuring method.
- the "recovery force" is when both ends of the PET (polyethylene terephthalate) film (thickness: about 75 ⁇ m) of width X length (about 50 mm ⁇ about 20 mm) are referred to as the first and second ends, respectively.
- the end portions of each of the two PET films are adhered to each other by an adhesive film having a width ⁇ length (about 20 mm ⁇ about 20 mm), and the first ends of the PET film / adhesive film / PET film are adhered in the order of the second ends of the PET films.
- the area of contact between the PET film and the pressure-sensitive adhesive film is measured with a specimen that is horizontal x vertical (about 20 mm x about 20 mm).
- the jig is fixed to both ends of the non-adhesive PET film in the specimen at room temperature (about 25 ° C.).
- One jig is fixed, and the other jig is about 1000% of the thickness of the adhesive film (unit: ⁇ m) at a speed of about 300 mm / min (about 10 times the initial thickness of the adhesive film, X 0 )
- the adhesive film is restored to the same speed (about 300 mm / min) at the speed of pulling the adhesive film stretched length when the force of about 0 kPa applied to the adhesive film X f ( Unit: ⁇ m)
- the recovery force (%) is a value calculated by the following equation (2):
- the initial thickness of the adhesive film may be 20 ⁇ m to 300 ⁇ m.
- the recovery power can be measured with a TA.XT_Plus Texture Analyzer (Stable Micro System).
- the recovery force can be measured at 25 ° C.
- the "elongation rate” is a thickness of about 100 ⁇ m, about 5 cm ⁇ about 5 cm, and then rolled up to closely adhere to the TA, TA (TA.XT_Plus Texture Analyzer (Stable Micro System)).
- TA TA.XT_Plus Texture Analyzer (Stable Micro System)
- both ends are fixed and stretched at a speed of about 300 mm / min, it means that the length of the breaking moment of the adhesive film is expressed as a ratio (%) to the length (100%) before stretching.
- the "bubble generating area” is a PET having a thickness of about 50 ⁇ m on one side of an adhesive film (about 13 cm ⁇ about 3 cm, thickness of about 100 ⁇ m) and PET having a thickness of about 100 ⁇ m on the back side of the adhesive film.
- the adhesive film is bent in a direction of about 50 ⁇ m PET so that the horizontal length is about 1/2 between parallel frames of about 1 cm interval, and aged at about 70 ° C. and humidity of 93% for about 24 hours, and bubbles are generated.
- the image of the part measured by optical microscope (Olympus, EX-51, 30x magnification) was analyzed by Mountech's Mac-view software, and the ratio of the size of the bubble to the area to the area was measured (%).
- a pressure-sensitive adhesive composition is a monomer mixture comprising a (meth) acrylate having a hydroxyl group and a comonomer, and a composition comprising nanoparticles, the nanoparticles comprise a silicone-based polymer, the average particle diameter is about 5 nm to about 800 nm.
- the monomer mixture includes (meth) acrylates and comonomers having hydroxyl groups.
- the monomer mixture may be polymerized to form a (meth) acrylic copolymer having a hydroxyl group.
- the (meth) acrylic monomer having a hydroxyl group is a (meth) acrylic acid ester having an alkyl group having 1 to 20 carbon atoms having at least one hydroxyl group, a (meth) acrylic acid ester having a cycloalkyl group having 5 to 20 carbon atoms having at least one hydroxyl group, Or a (meth) acrylic acid ester having an aryl group having 6 to 20 carbon atoms having at least one hydroxyl group.
- the (meth) acrylate monomer having a hydroxyl group is, for example, 2-hydroxyethyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydrate It may be one or more of oxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, but is not necessarily limited thereto.
- an alkyl group-containing (meth) acrylic monomer having 1 to 5 carbon atoms having a hydroxyl group there may be an effect of increasing the adhesion of the pressure-sensitive adhesive film.
- the (meth) acrylate having a hydroxyl group has a (meth) acryl having a hydroxyl group having a glass transition temperature (Tg) of about -80 ° C to about -20 ° C, specifically about -60 ° C to about -35 ° C. Rate can be used.
- Tg glass transition temperature
- 4-hydroxybutyl (meth) acrylate may be used, but is not necessarily limited thereto.
- the adhesive film has excellent viscoelastic properties at low temperature and room temperature.
- the (meth) acrylate having a hydroxyl group may be included in about 15% to about 45% by weight, specifically about 25% to about 40% by weight of the monomer mixture.
- the haze of the pressure-sensitive adhesive film in the above range is low, there is an excellent adhesive force.
- Comonomers are alkyl (meth) acrylate monomers, monomers with ethylene oxide, monomers with propylene oxide, monomers with amine groups, monomers with amide groups, monomers with alkoxy groups, monomers with phosphoric acid groups, monomers with sulfonic acid groups, phenyl groups It may include one or more of a monomer having a monomer and a silane group, but is not necessarily limited thereto.
- the alkyl (meth) acrylate monomer may include an unsubstituted linear or branched alkyl (meth) acrylic acid ester having 1 to 20 carbon atoms.
- one or more (meth) acrylate monomers containing an ethylene oxide group may be used.
- the monomer having propylene oxide may be polypropylene oxide monomethyl ether (meth) acrylate, polypropylene oxide monoethyl ether (meth) acrylate, polypropylene oxide monopropyl ether (meth) acrylate, polypropylene oxide monobutyl ether ( Meth) acrylate, polypropylene oxide monopentyl ether (meth) acrylate, polypropylene oxide dimethyl ether (meth) acrylate, polypropylene oxide diethyl ether (meth) acrylate, polypropylene oxide monoisopropyl ether (meth) Polypropylene oxide alkyl ether (meth) acrylates such as acrylates, polypropylene oxide monoisobutyl ether (meth) acrylates, polypropylene oxide monotertbutyl ether (meth) acrylates, but are not necessarily limited thereto. Is no.
- Monomer which has the said amino group is monomethylaminoethyl (meth) acrylate, monoethylaminoethyl (meth) acrylate, monomethylaminopropyl (meth) acrylate, monoethylaminopropyl (meth) acrylate, and dimethylaminoethyl Amino-group-containing (meth) acrylic-types, such as (meth) acrylate, diethylaminoethyl (meth) acrylate, N-tert- butylaminoethyl (meth) acrylate, and methacryloxyethyl trimethylammonium chloride (meth) acrylate It may be a monomer, but is not necessarily limited thereto.
- the monomer having an amide group may be (meth) acrylamide, N-methylacrylamide, N-methylmethacrylamide, N-methylol (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N, N-methylene Amide group-containing (meth) acrylic monomers such as bis (meth) acrylamide and 2-hydroxyethylacrylamide may be used, but are not necessarily limited thereto.
- Monomers having the alkoxy group include 2-methoxy ethyl (meth) acrylate, 2-methoxypropyl (meth) acrylate, 2-ethoxypropyl (meth) acrylate, 2-butoxypropyl (meth) acrylate, 2-methoxypentyl (meth) acrylate, 2-ethoxypentyl (meth) acrylate, 2-butoxyhexyl (meth) acrylate, 3-methoxypentyl (meth) acrylate, 3-ethoxypentyl ( Meth) acrylate, 3-butoxyhexyl (meth) acrylate, but is not necessarily limited thereto.
- It may be an acrylic monomer having a phosphoric acid group, such as, but is not necessarily limited thereto.
- the monomer having a sulfonic acid group is an acrylic monomer having a sulfonic acid group such as sodium sulfopropyl (meth) acrylate, sodium 2-sulfoethyl (meth) acrylate, and sodium 2-acrylamido-2-methylpropane sulfonate.
- the present invention is not limited thereto.
- the monomer having a phenyl group may be an acryl-based vinyl monomer having a phenyl group such as p-tert-butylphenyl (meth) acrylate and o-biphenyl (meth) acrylate, but is not necessarily limited thereto.
- Monomers having the silane group include 2-acetoacetoxyethyl (meth) acrylate, vinyltrimethoxysilane, vinyltriethoxysilane, vinyl tris ( ⁇ -methoxyethyl) silane, vinyltriacetylsilane and methacryloyl. It may be a vinyl monomer having a silane group such as oxypropyltrimethoxysilane, but is not necessarily limited thereto.
- the comonomer may be included in about 55% to about 85% by weight, specifically about 60% to about 75% by weight of the monomer mixture.
- the adhesive film in the above range has an excellent adhesive strength and excellent reliability effect.
- the comonomer may use a glass transition temperature (Tg) of about -150 °C to about 0 °C.
- Tg glass transition temperature
- the glass transition temperature can be measured, for example, using TA Instrument's DSC Q20 for the homopolymer of each monomer to be measured. Specifically, the temperature is raised to about 100 ° C. at about 20 ° C./min for the homopolymer of each monomer, and then cooled to about ⁇ 180 ° C. at the same rate, and then about 100 ° C. at about 10 ° C./min. After the data of the endothermic transition curve when the temperature is raised to, the inflection point of the endothermic transition curve is determined as the glass transition temperature.
- the comonomer having the glass transition temperature (Tg) of about -150 ° C to about 0 ° C may be used without limitation as long as it has a glass transition temperature (Tg) of about -150 ° C to about 0 ° C.
- the comonomer is an alkyl (meth) acrylate monomer, a monomer having ethylene oxide, a monomer having propylene oxide, a monomer having an amine group, a monomer having an amide group, a monomer having an alkoxy group, a monomer having a phosphoric acid group,
- One or more of the monomer having a sulfonic acid group, the monomer having a phenyl group, and the monomer having a silane group may have a glass transition temperature (Tg) of about -150 ° C to about 0 ° C.
- Such comonomers are, for example, methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, iso-butyl acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, 2-ethyl Alkyl (meth) acrylate monomers including hexyl acrylate, dodecyl (meth) acrylate, and the like; Polyethylene oxide monomethyl ether (meth) acrylate, polyethylene oxide monoethyl ether (meth) acrylate, polyethylene oxide monopropyl ether (meth) acrylate, polyethylene oxide monobutyl ether (meth) acrylate, polyethylene oxide monopentyl ether ( Contains alkylene oxide groups including meth) acrylate, polypropylene oxide monomethyl ether (meth) acrylate, polypropylene oxide monoethyl ether (meth) acrylate
- the monomer mixture forming the (meth) acrylic copolymer having a hydroxyl group may further include a monomer having a carboxyl group.
- the monomer having a carboxyl group is (meth) acrylic acid, 2-carboxyethyl (meth) acrylate, 3-carboxypropyl (meth) acrylate, 4-carboxybutyl (meth) acrylate, itaconic acid, crotonic acid, maleic acid, Fumaric acid and maleic anhydride, and the like, but are not necessarily limited thereto.
- the monomer having a carboxyl group may include about 0.1% to about 10% by weight, specifically about 0.1% to about 7% by weight, more specifically about 0.1% to about 5% by weight of the monomer mixture. In the above range, the adhesive force of the adhesive film is high, and there is an excellent effect of reliability.
- the adhesive film Since the adhesive composition includes nanoparticles, the adhesive film has excellent low temperature and / or room temperature viscoelasticity, and has a crosslinked structure to stably exhibit high temperature viscoelasticity of the adhesive film.
- the nanoparticles may form a chemical bond with the (meth) acrylic copolymer having the hydroxyl group.
- nanoparticle having a specific average particle diameter with a small difference in refractive index and a (meth) acrylic copolymer having a hydroxyl group it is possible to obtain an adhesive film having excellent transparency despite the inclusion of nanoparticles.
- the nanoparticles have an average particle diameter of about 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790 or 800 nm.
- the nanoparticles may have an average particle diameter in a range of at least one of the above values and at most one of the above values.
- the nanoparticles may have an average particle diameter of about 5 nm to about 800 nm, specifically about 5 nm to about 700 nm, and more specifically about 10 nm to about 400 nm. In the above range, the aggregation of nanoparticles can be prevented and the transparency is excellent.
- the nanoparticles have a refractive index difference of about 0.05 or less, specifically about 0 or more and about 0.05 or less, specifically about 0 or more and about 0.03 or less, and more specifically, about a refractive index difference with the (meth) acrylic copolymer having a hydroxyl group formed from the adhesive mixture. It may be from 0 to about 0.02. In the above range, the transparency of the pressure-sensitive adhesive film is excellent.
- the nanoparticles have a core-shell structure, and the glass transition temperature of the core and the shell may satisfy the following Equation 1.
- Tg (c) is the glass transition temperature (° C.) of the core
- Tg (s) is the glass transition temperature (° C.) of the shell.
- the glass transition temperature of the core may be about -200 °C to about -40 °C, specifically about -200 °C to about -80 °C, more specifically about -200 °C to about -90 °C. In the above range, it is possible to realize a storage modulus value required at low temperature (about -20 ° C), and excellent low temperature and / or room temperature viscoelastic properties.
- the nanoparticles may include a silicone-based polymer, and the silicone-based polymer may have the core-shell structure.
- the core of the silicone-based polymer may be polysiloxane having a glass transition temperature of the nanoparticle core or a mixture thereof.
- the polysiloxane can be, for example, an organosiloxane (co) polymer.
- the organosiloxane (co) polymer may be one which is not crosslinked, or a crosslinked (co) polymer may be used.
- Crosslinked organosiloxane (co) polymers can be used for impact resistance and colorability. This is a crosslinked organosiloxane, specifically, crosslinked dimethylsiloxane, methylphenylsiloxane, diphenylsiloxane or a mixture of two or more thereof may be used.
- the refractive index of about 1.41 to about 1.50 can be adjusted by using a form in which two or more organosiloxanes are copolymerized.
- the crosslinking state of the organosiloxane (co) polymer can be judged with the degree to be dissolved by various organic solvents. The deeper the crosslinking state, the smaller the degree of dissolution by the solvent. Acetone or toluene may be used as a solvent for determining the crosslinking state.
- the organosiloxane (co) polymer may have a portion which is not dissolved by acetone or toluene.
- the insoluble component of the organosiloxane copolymer to toluene may be about 30% or more.
- the organosiloxane (co) polymer may further include an alkylacrylate crosspolymer.
- alkylacrylate crosspolymer methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate and the like can be used.
- n-butyl acrylate or 2-ethylhexyl acrylate having a low glass transition temperature can be used.
- the silicone-based polymer may have a glass transition temperature of about 15 ° C. to about 200 ° C., specifically about 15 ° C. to about 180 ° C., more specifically about 15 ° C. to about 150 ° C.
- a glass transition temperature of about 15 ° C. to about 200 ° C., specifically about 15 ° C. to about 180 ° C., more specifically about 15 ° C. to about 150 ° C.
- the shell may comprise a poly (meth) acrylate having the glass transition temperature.
- a poly (meth) acrylate having the glass transition temperature.
- polymethyl acrylate polymethyl methacrylate (PMMA), polyethyl methacrylate, polypropyl methacrylate, polybutyl methacrylate, polyisopropyl methacrylate, polyisobutyl methacrylate,
- PMMA polymethyl methacrylate
- PMMA polymethyl methacrylate
- PMMA polyethyl methacrylate
- polypropyl methacrylate polybutyl methacrylate
- polyisopropyl methacrylate polyisobutyl methacrylate
- And may include, but are not necessarily limited to, polycyclohexyl methacrylate, polyphenyl methacrylate, and polybenzyl methacrylate.
- it may include polymethyl methacrylate.
- the shell may comprise two or more layers.
- the outermost layer of the nanoparticles may include polyalkyl (meth) acrylate having a glass transition temperature (Tg) of about 15 ° C to about 200 ° C.
- the nanoparticles included in the pressure-sensitive adhesive composition may be used in a polymerized state with the monomer mixture when preparing the (meth) acrylic copolymer having a hydroxyl group.
- the nanoparticles may be used in a state contained in the (meth) acrylic copolymer having a hydroxyl group.
- the pressure-sensitive adhesive composition may include nanoparticles together with a (meth) acrylic copolymer having a hydroxyl group in an already prepared state.
- the nanoparticles may be included in the pressure-sensitive adhesive composition in a state separate from the (meth) acrylic copolymer having a hydroxyl group.
- the nanoparticles are about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, based on 100 parts by weight of the monomer mixture including a (meth) acrylate having a hydroxyl group and a comonomer. 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5 or 20 parts by weight.
- the nanoparticles may be in the range of about one or more of the above values and about one or less of the above values based on 100 parts by weight of the monomer mixture forming the (meth) acrylic copolymer having a hydroxyl group.
- the nanoparticles are about 0.1 parts by weight to about 20 parts by weight, specifically about 0.1 parts by weight to about 18 parts by weight, more specifically, based on 100 parts by weight of the monomer mixture forming the (meth) acrylic copolymer having a hydroxyl group.
- the weight ratio of the core and the shell of the nanoparticles may be about 1: 1 to about 9: 1, specifically about 1: 1 to about 8: 1, more specifically about 1.5: 1 to about 8: 1.
- the viscoelastic properties are maintained in a wide range, and the compatibility and recovery force are excellent.
- the pressure-sensitive adhesive composition may further include one or more of an initiator and a crosslinking agent.
- the initiator may use a photopolymerization initiator or a thermal polymerization initiator.
- the initiator may use the same or different initiator as the initiator used in preparing the prepolymer to partially polymerize.
- any photoinitiator as long as it can induce the polymerization reaction of the radically polymerizable compound mentioned above in the hardening process by light irradiation etc., and can implement
- benzoin benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether , Benzoin n-butyl ether, benzoin isobutyl ether, acetophenone, dimethylanino acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2 -Hydroxy-2-methyl-1-phenylpropane-1one, 1-hydroxycyclohexylphenylketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-propane-1- On, 4- (2-hydroxyethoxy) phenyl-2- (hydroxy-2-propyl) ketone, benzophenone, p-phenylbenzophenone, 4,4-nonsidiethylaminobenzophenone, dichlorobenzophenone, 2 -Methylanth
- the type of the thermal polymerization initiator is not particularly limited as long as it can induce a polymerization reaction of the polymerizable compound to implement the second crosslinked structure.
- an azo compound, a peroxide compound, or a redox system is used.
- Conventional initiators such as compounds can be used.
- Examples of the azo compound in the above are 2,2-azobis (2-methylbutyronitrile), 2,2-triazobis (isobutyronitrile), 2,2-triazobis (2,4-dimethyl Valeronitrile), 2,2-nitazobis-2-hydroxymethylpropionitrile, dimethyl-2,2-methylazobis (2-methylpropionate) and 2,2-piazobis (4- Methoxy-2,4-dimethylvaleronitrile) and the like
- examples of the peroxide-based compound include inorganic peroxides such as potassium peroxide, ammonium persulfate or hydrogen peroxide; Or diacyl peroxide, peroxy dicarbonate, peroxy ester, tetramethylbutylperoxy neodecanoate, bis (4-butylcyclohexyl) peroxydicarbonate, di (2-ethylhexyl) peroxy carbonate, butylper Oxy neodecanoate, dipropyl peroxy dicarbonate, di
- Examples of the compound include, but are not limited to, a mixture using a peroxide compound and a reducing agent in combination.
- a peroxide compound and a reducing agent in combination.
- one kind or a mixture of two or more kinds of the azo-based, peroxide-based or redox-based compounds may be used.
- the initiator may be included in an amount of about 0.01 to about 5 parts by weight, specifically about 0.005 parts by weight to about 3 parts by weight, more specifically about 0.1 part by weight to about 1 part by weight, based on 100 parts by weight of the monomer mixture. In the above range, the curing reaction may proceed completely, and the residual amount of initiator may remain to prevent the transmittance of the adhesive film from decreasing, and also may lower bubble generation, and may have excellent reactivity.
- Crosslinking agents are polyfunctional (meth) acrylates, for example 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentylglycol di (meth) acrylate, Polyethylene glycol di (meth) acrylate, neopentylglycol adipate di (meth) acrylate, dicyclopentanyl di (meth) acrylate, caprolactone modified dicyclopentenyl di (meth) acrylic Ethylene Oxide Modified Di (meth) acrylate, Di (meth) acryloxyethyl Isocyanurate, Allylated Cyclohexyl Di (meth) acrylate, Tricyclodecanedimethanol (meth) acrylate, Dimethylol Dish Clopentane di (meth) acrylate, ethylene oxide modified hexahydrophthalic acid di (meth)
- the crosslinking agent may be a polyfunctional ( By using meth) acrylate, there exists an effect which has the outstanding durability reliability.
- the crosslinking agent may be included in an amount of about 0.01 to about 5 parts by weight, specifically about 0.03 to about 3 parts by weight, specifically about 0.1 to about 0.3 parts by weight, based on 100 parts by weight of the monomer mixture. In the above range there is an effect of increasing the adhesive strength and reliability of the adhesive film.
- the pressure-sensitive adhesive composition may further include a silane coupling agent.
- the silane coupling agent may further include a siloxane-based or epoxy-based silane coupling agent, but is not limited thereto.
- the silane coupling agent is about 0.01 parts by weight to about 5 parts by weight, specifically about 0.01 parts by weight to about 2 parts by weight, and more specifically about 0.01 to about 0.5 parts by weight based on 100 parts by weight of the (meth) acrylic copolymer having a hydroxyl group. It can be included as a wealth. There is an effect of increasing the reliability of the adhesive film in the above range.
- the pressure-sensitive adhesive composition may optionally include a curing accelerator, an ionic liquid, a lithium salt, an inorganic filler, a softener, a molecular weight regulator, an antioxidant, an antioxidant, a stabilizer, a tackifying resin, a modified resin (polyol resin, a phenol resin, an acrylic resin, a polyester resin).
- a curing accelerator an ionic liquid, a lithium salt, an inorganic filler, a softener, a molecular weight regulator, an antioxidant, an antioxidant, a stabilizer, a tackifying resin, a modified resin (polyol resin, a phenol resin, an acrylic resin, a polyester resin).
- Polyolefin resins epoxy resins, epoxidized polybutadiene resins, etc.
- leveling agents antifoaming agents, plasticizers, dyes, pigments (colored pigments, sieving pigments, etc.), treatment agents, sunscreen agents, fluorescent brighteners, dispersants, thermal stabilizers, Conventional additives such as light stabilizers, ultraviolet absorbers, antistatic agents, flocculants, lubricants and solvents may be further included.
- the pressure-sensitive adhesive composition may further include a non-curable compound.
- the pressure-sensitive adhesive composition does not include a solvent, the viscosity of 25 °C can be about 300 cPs to about 50,000 cPs. Since an adhesive composition does not contain a solvent, foaming can be reduced and reliability can be improved.
- the pressure-sensitive adhesive composition in the above range has the effect of obtaining excellent coating properties and thickness uniformity.
- the pressure-sensitive adhesive film according to one embodiment of the present invention may be formed of the pressure-sensitive adhesive composition.
- the adhesive film may include a (meth) acrylic copolymer having a hydroxyl group polymerized from a monomer mixture including a (meth) acrylate having a hydroxyl group and a comonomer.
- nanoparticles may be added to the syrup to prepare an adhesive composition.
- an initiator to a mixture comprising a (meth) acrylate monomer having a hydroxyl group, a comonomer (e.g., a comonomer having a glass transition temperature (Tg) of about -150 ° C to about 0 ° C) and nanoparticles
- Tg glass transition temperature
- the weight average molecular weight of the (meth) acrylic copolymer having a partially polymerized hydroxyl group may be about 500,000 g / mol to about 3 million g / mol, specifically about 1 million g / mol to about 2.8 million g / mol have. In the above range can increase the durability of the adhesive film.
- the pressure-sensitive adhesive film is prepared by mixing an initiator and / or a crosslinking agent with a syrup including the (meth) acrylic copolymer having a partially polymerized hydroxyl group to prepare a pressure-sensitive adhesive composition, and coating and coating the pressure-sensitive adhesive composition with UV curing. It can manufacture.
- the pressure-sensitive adhesive film is partially polymerized by mixing a monomer mixture, nanoparticles and a photopolymerization initiator forming a (meth) acrylic copolymer having a hydroxyl group, and adding an additional photopolymerization initiator and / or a crosslinking agent to the partially polymerized syrup.
- the pressure-sensitive adhesive composition prepared by coating on a release film may be prepared by curing. Curing was carried out at low pressure lamps in anoxic conditions with an irradiation dose of about 400 mJ / cm at a wavelength of about 300 nm to about 400 nm. 2 To about 30,000 mJ / cm 2 May include investigation.
- the coating thickness is not particularly limited and may be about 10 ⁇ m to about 2 mm, specifically about 20 ⁇ m to about 1.5 mm.
- the adhesive film may be used as an OCA film, or may be formed on an optical film and used as an adhesive optical film.
- the optical film may include a polarizing plate.
- the polarizing plate may include a polarizer, a protective film formed on the polarizer, and further include a hard coating layer and an antireflection layer.
- the adhesive film may have a thickness of about 10 ⁇ m to about 2 mm, specifically about 50 ⁇ m to about 1.5 mm. It can be used in the optical display device in the above range.
- the adhesive film has a glass transition temperature (Tg) of about 0 ° C. or less, specifically about -150, -145, -140, -135, -130, -125, -120, -115, -110, -105,- 100, -95, -90, -85, -80, -75, -70, -65, -60, -55, -50, -45, -40, -35, -30, -25, -20, Can be -15, -10, -5 or 0 ° C.
- Tg glass transition temperature
- the adhesive film may have a glass transition temperature (Tg) of about one or more of the above values and about one or less of the above values.
- the adhesive film may have a glass transition temperature (Tg) of about -150 ° C to about 0 ° C, specifically about -150 ° C to about -20 ° C, and more specifically about -150 ° C to about -30 ° C. have. In the above range, the adhesive film is excellent in viscoelastic properties at low and normal temperatures.
- Tg glass transition temperature
- the adhesive film has a storage modulus of about 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600 at 80 ° C. , 650, 700, 750, 800, 850, 900, 950 or 1000 KPa.
- the adhesive film may have a storage modulus at 80 ° C. in the range of about one or more of the above values and about one or less of the above values.
- the adhesive film may have a storage modulus of about 10 KPa to about 1,000 KPa, specifically about 10 KPa to about 300 KPa, and more specifically about 10 KPa to about 100 KPa at 80 ° C. In the above range, the adhesive film exhibits viscoelastic properties even at a high temperature, and even when frequently folded at a high temperature, the adhesive film does not fall off from the adhesive and can prevent the adhesive film from overflowing. Excellent recovery power.
- the adhesive film has a storage modulus of about 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600 at 25 ° C. , 650, 700, 750, 800, 850, 900, 950 or 1000 KPa.
- the pressure-sensitive adhesive film may have a storage modulus at 25 ° C. of about one or more of the above values and about one or less of the above values.
- the adhesive film has a storage modulus at 25 ° C.
- the viscoelastic characteristics of the pressure-sensitive adhesive film is expressed at room temperature, and has an advantage of excellent recovery force.
- the adhesive film has a storage modulus of about 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, at -20 ° C. It can be 600, 650, 700, 750, 800, 850, 900, 950 or 1000 KPa.
- the adhesive film may have a storage modulus at ⁇ 20 ° C. of about one or more of the above values and about one or less of the above values.
- the adhesive film has a storage modulus at -20 ° C of about 10 KPa to about 1000 KPa, specifically about 10 KPa to about 700 KPa, more specifically about 10 KPa to about 500 KPa, even more specifically about 10 KPa to It can be about 200 KPa.
- a storage modulus at -20 ° C of about 10 KPa to about 1000 KPa, specifically about 10 KPa to about 700 KPa, more specifically about 10 KPa to about 500 KPa, even more specifically about 10 KPa to It can be about 200 KPa.
- the ratio of the storage modulus at 80 ° C. to the storage modulus at ⁇ 20 ° C. of the adhesive film is about 1: 1 to about 1:20, specifically about 1: 1 to about 1:15, and more specifically about 1: 1 to about 1: 1. It can be about 1: 10.
- the adhesive film does not fall off the adhesive strength between the adhesives in a wide temperature range (about -20 °C to 80 °C), the adhesive film can be used in a flexible (flexible) optical member.
- the adhesive film may have a haze of about 4% or less, specifically about 3% or less, and more specifically about 2% or less at a thickness of 100 ⁇ m. In the above range, excellent transparency is exhibited when the adhesive film is used in an optical display device.
- the adhesive film may have a haze of about 5% or less, specifically about 3% or less, and more specifically about 2% or less after stretching about 200% at a thickness of 100 ⁇ m. In the above range, the adhesive film exhibits excellent transparency when used in a display.
- the adhesive film may have a recovery force of about 30% to about 98%, specifically about 40% to about 95%, and more specifically about 40% to about 90% at a thickness of 100 ⁇ m. In the above range, the adhesive film can be applied to a flexible optical display device, and the service life is also long.
- Equation 2 when the both ends of the PET (polyethylene terephthalate) film (thickness: about 75 ⁇ m) of horizontal ⁇ vertical (about 50 mm ⁇ about 20 mm), respectively called the first end and the second end, The end portions of each of the two PET films are adhered to each other by an X-length (about 20 mm ⁇ about 20 mm) adhesive film, and the first end / adhesive film of the PET film (width ⁇ length, about 20 mm ⁇ about 20 mm) A test piece was prepared in the order of the second end of the PET film, the jig was fixed to both ends of the PET film, one jig was fixed, and the other jig was pulled at a speed of about 300 mm / min.
- X 0 After reaching the length (about 10 times the thickness, X 0 ) of about 1000% of the thickness (unit: ⁇ m) of the pressure-sensitive adhesive film is maintained for about 10 seconds, and restored at the same speed as the pulled speed (about 300 mm / min Length of the adhesive film when the pressure of about 0 kPa is applied to the adhesive film is X f (unit: ⁇ m)).
- the bubble generation area (%) is about 0%. Can be. In the above range, the fall with the adherend does not occur even at high temperature and high humidity.
- the “bubble generating area” is a PET having a thickness of about 50 ⁇ m on one side of an adhesive film (about 13 cm ⁇ about 3 cm, thickness of about 100 ⁇ m) and PET having a thickness of about 100 ⁇ m on the back side of the adhesive film.
- the pressure-sensitive adhesive film is bent in a direction of 50 ⁇ m PET so that the horizontal length of the pressure-sensitive adhesive film is about 1/2 between the parallel molds spaced about 1 cm, and aged at a temperature of about 70 ° C. and a humidity of about 93% for about 24 hours.
- the image measured by the optical microscope (Olympus, EX-51) was analyzed by Mountech's Mac-view software, and the ratio of the size of the bubble to the area to the area was measured (%).
- the adhesive film was cut to a thickness of about 100 ⁇ m, about 5 cm ⁇ about 5 cm, and rolled so as to adhere tightly to each other, and then fixed at both ends to TA (TA.XT_Plus Texture Analyzer (Stable Micro System)).
- TA TA.XT_Plus Texture Analyzer (Stable Micro System)
- the length of the break point of the adhesive film is about 800% to about 2,000%, specifically about 800% to about 1,800%, more specifically about 900% compared to the length before stretching. It may be from about 1,800% In the above range, the adhesive film is maintained in viscoelasticity over a wide temperature range, and excellent in reliability.
- the pressure-sensitive adhesive film is surface-treated in advance on the surface to which the pressure-sensitive adhesive composition is applied, for example, about 150 mJ / cm 2
- the corona pretreatment step may be followed. Specifically, when the corona pretreatment step is carried out, the peeling strength of the adhesive film T-peel at 25 ° C. and 60 ° C. may be further increased.
- the corona pretreatment may be performed by using a corona treatment (Now plasma) to treat the surface to be bonded (eg, PET film) about twice with a dose of about 78 doses, but is not necessarily limited thereto. .
- the adhesive film has a thickness of 100 ⁇ m, and the T-peel peeling strength of the corona-treated PET film at room temperature (25 ° C.) is about 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700, 2800, 2900, 3000, It can be 3100, 3200, 3300, 3400, 3500, 3600, 3700, 3800, 3900 or 4000 gf / in.
- the pressure-sensitive adhesive film has a thickness of 100 ⁇ m, the T-peel peeling strength of the corona treated PET film at room temperature (25 ° C.) of about one or more of the above values and about one or less of the above values Can be
- the pressure-sensitive adhesive film has a thickness of 100 ⁇ m
- the T-peel peeling strength of the corona treated PET film at room temperature (25 ° C.) is about 400 gf / in to about 4,000 gf / in, specifically, For example, about 500 gf / in to about 4,000 gf / in, and more specifically, about 700 gf / in to about 3,500 gf / in.
- the adhesion and reliability at room temperature are excellent.
- the adhesive film has a T-peel peel strength of about 200, 250, 300, 350, 400, 450, 500, 550, 600 for a corona treated PET film at 60 ° C. at a thickness of 100 ⁇ m. , 650, 700, 750, 800, 850, 900, 950, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700 , 2800, 2900 or 3000 gf / in.
- the adhesive film has a thickness of 100 ⁇ m, the T-peel peel strength of the corona treated PET film at 60 ° C.
- the adhesive film has a T-peel peel strength of about 200 gf / in to about 3,000 gf / in, specifically about 500, at a thickness of 100 ⁇ m for a corona treated PET film at 60 ° C. gf / in to about 2,000 gf / in, more specifically about 500 gf / in to about 1,500 gf / in.
- the adhesive force and reliability are excellent.
- T-peel peel strength of the adhesive film is measured as follows. Corona of PET film with corona treatment of horizontal ⁇ length ⁇ thickness (about 150 mm ⁇ about 25 mm ⁇ about 75 ⁇ m) on both sides of the adhesive film of about 100 mm ⁇ 25 mm ⁇ 100 ⁇ m (width ⁇ length ⁇ thickness) Each pretreated side is laminated and autoclaved for about 1000 seconds at a pressure of about 3.5 bar and about 50 ° C. and fixed in a TA.XT_Plus Texture Analyzer (Stable Micro System). At 25 ° C. or 60 ° C., one PET film is fixed and the other PET film is pulled at a rate of about 50 mm / min to measure the T-peel peel strength for the PET film. Corona pretreatment of the PET film may be, for example, using a corona treatment (Now plasma) to treat the PET film twice (total dose: about 156 doses) at a dose of about 78 doses. It is not.
- Another aspect of the invention relates to a display member.
- the display member is an optical film; And the adhesive film attached to one side or both sides of the optical film.
- FIG. 1 is a cross-sectional view of a display member of one embodiment of the present invention.
- the display member may include an optical film 40 and an adhesive layer or an adhesive film formed on one surface of the optical film 40.
- 200 may be an adhesive layer or an adhesive film.
- the display member is an optical film 40; And an adhesive layer 200 formed on one or both surfaces of the optical film 40.
- the pressure-sensitive adhesive layer may be formed of the pressure-sensitive adhesive composition of the present invention.
- the pressure-sensitive adhesive composition prepared by mixing and polymerizing a monomer mixture, a nanoparticle, and a photopolymerization initiator to form a (meth) acrylic copolymer having a hydroxyl group, and adding an additional photopolymerization initiator to the polymer may be applied to the optical film or
- An adhesive layer can be formed by the method of coating.
- the pressure-sensitive adhesive layer may further include a drying process.
- the display member comprises an optical film 40; And it may include a pressure-sensitive adhesive film 200 of the present invention formed on one side or both sides of the optical film.
- the optical film may include a touch panel, a window, a polarizing plate, a color filter, a retardation film, an elliptical polarizing film, a reflective film, an antireflection film, a compensation film, a brightness enhancement film, an alignment film, a light diffusion film, a glass scattering prevention film, and a surface protection film.
- OLED device barrier layer plastic LCD substrate, film with indium tin oxide (ITO), film with fluorinated tin oxide (FTO), film with aluminum dopped zinc oxide (AZO), film with carbon nanotube (CNT), Ag nanowire ( and a transparent electrode film such as a nanowire-containing film or a graphene-containing film.
- ITO indium tin oxide
- FTO fluorinated tin oxide
- AZO aluminum dopped zinc oxide
- CNT carbon nanotube
- Ag nanowire and a transparent electrode film such as a nanowire-containing film or a graphene-containing film.
- the display member may be formed by attaching a touch panel to a window or an optical film using the adhesive film. Or it can also be applied as a pressure-sensitive adhesive film to a conventional polarizing film as in the prior art.
- the display device may include a capacitive mobile phone as an optical display device.
- the display member may include a first adhesive film on an optical device portion, a touch function portion on the first adhesive film, a second adhesive film on the touch function portion, and a window film on the second adhesive film in sequence. It may be stacked.
- the optical device unit may include an OLED, an LED, or a light source, and the first adhesive film or the second adhesive film may be an adhesive film of the present invention.
- the touch function unit may be a touch panel, but is not limited thereto.
- the window film may be formed of an optically transparent and flexible resin.
- the window film may include a base layer and a hard coating layer.
- the base layer is a poly (meth) containing a polyester resin such as polyethylene terephthalate polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, polycarbonate resin, polyimide resin, polystyrene resin, polymethyl methacrylate, and the like. It may be made of any one or more of the acrylate resin.
- a polyester resin such as polyethylene terephthalate polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, polycarbonate resin, polyimide resin, polystyrene resin, polymethyl methacrylate, and the like. It may be made of any one or more of the acrylate resin.
- the hard coating layer may have a strength of about 6H or more when tested for pencil hardness, and specifically, may be formed of a siloxane resin.
- the display member may include a liquid crystal panel in which polarizers are stacked on both sides of the LCD cell, a double sided adhesive tape (DAT) for adhering a functional film (eg, an antireflective film) to each other, and a touch panel portion formed on the functional film.
- DAT double sided adhesive tape
- the touch panel unit includes a first adhesive film, a first transparent electrode film, a second adhesive film, and a second transparent electrode film laminated on the first adhesive film.
- An electrode and an overcoating layer for the electrode are formed on the second transparent electrode film, and the third adhesive film and the window glass are sequentially stacked on the overcoating layer.
- the air gap can be removed when laminating.
- (b1) 99.5 g of dimethylsiloxane-diphenylsiloxane crosslinked copolymer having a refractive index of 1.43, an average particle diameter of 170 nm, and a toluene insoluble content of 41%, 127.2 g of n-butylacrylate, and 2.4 g of triallyl isocyanurate; Mixing in.
- a silicone mixture was prepared in which 1.4 g of sodium dodecylbenzene sulfate was dispersed in 760 g of ion-exchanged water. 2.4 g of potassium persulfate was added while maintaining the temperature of the mixed solution at 75 ° C., and the polymerization was carried out for 4 hours.
- (b2) 120 g of dimethylsiloxane-diphenylsiloxane crosslinked copolymer having a refractive index of 1.45 and an average particle diameter of 210 nm and a toluene insoluble content of 60%, 127.2 g of 2-ethylhexyl acrylate, and 2.4 g of triallyl isocyanurate Mix at room temperature.
- a silicone mixture was prepared in which 2.8 g of sodium dodecylbenzene sulfate was dispersed in 980 g of ion-exchanged water. 2.4 g of potassium persulfate was added while maintaining the temperature of the mixed solution at 75 ° C., and the polymerization was carried out for 4 hours.
- nanoparticles (b1) and photopolymerization initiator (c1) based on 100 parts by weight of the monomer mixture comprising 60% by weight of 2-ethylhexyl acrylate (a1), 40% by weight of 4-hydroxybutyl acrylate (a2) (Irgacure 651) 0.005 parts by weight was mixed well in a glass vessel.
- the dissolved oxygen in the glass container was replaced with nitrogen gas, and the mixture was partially polymerized by irradiating with ultraviolet rays using a low pressure lamp (50 mw / cm 2 , BL Lamp manufactured by Sankyo), thereby producing a (meth) acrylic type having a hydroxyl group.
- a syrup made up of a copolymer (prepolymer), nanoparticles and unpolymerized monomer mixture was prepared.
- An adhesive composition (viscosity: 1500 cPs) was prepared by adding 0.35 parts by weight of an additional photopolymerization initiator (c2) (Irgacure 184) to the syrup.
- the resulting pressure-sensitive adhesive composition was coated on a polyester film (release film, polyethylene terephthalate film, 50 ⁇ m thick) to form an adhesive film having a thickness of 100 ⁇ m. Then, after covering the release film of a thickness of 75 ⁇ m on the top, and irradiated with a low pressure lamp (50mw / cm 2 , BL Lamp manufactured by Sankyo) for 6 minutes on both sides to obtain a transparent adhesive sheet.
- the glass transition temperature (Tg) of the pressure-sensitive adhesive film was -38.6 ° C.
- Example 1 Except for changing the content of each component in Example 1 as in Table 1 was carried out in the same manner as in Example 1 to prepare a transparent adhesive sheet.
- Glass transition temperature (Tg, ° C.) A sample of 15 mg (on 6 mm Al Pan) was made on the pressure-sensitive adhesive films of Examples and Comparative Examples, and the temperature rising rate of 20 ° C./min in a nitrogen atmosphere (50 mL / min) was obtained.
- the glass transition temperature (Tg) of the pressure-sensitive adhesive film was raised to 100 ° C., cooled to -80 ° C. at the same rate (first heating condition (1st run)), and then heated up to 100 ° C. at a temperature rising rate of 10 ° C./min. Was measured.
- T-peel peel strength Corona treatment twice (total dose) on a PET film of width ⁇ length ⁇ thickness (150 mm ⁇ 25 mm ⁇ 75 ⁇ m) while discharging at a dose of 78 doses using a corona treatment machine. : 156 dose).
- the adhesive film sample was obtained by the magnitude
- the corona treated surface of the PET film was laminated on both surfaces of the adhesive film sample, thereby preparing the specimen shown in FIG.
- the specimens were autoclaved at pressure of 3.5 bar at 50 ° C.
- one PET film was fixed at 60 ° C., and the other PET film was pulled at a rate of 50 mm / min to measure T-Peel peel strength at 60 ° C.
- Haze meter Nippon Denshoku company model NDH 5000
- ASTM American Society for Testing and Measurement
- Test Method D 1003-95 (“Standard Test for Haze and Luminous Transmittance of Transparent Plastic”). Haze was measured.
- Refractive index measurement It measured using ATAGO's DR-M2 multiwavelength abe refractor.
- One (a1) 60 60 60 60 60 60 60 (a2) 40 40 40 40 40 40 40 40 40 (B) (b1) 2.5 5 10 - - - (b2) - - - 3 5 - (C) (c1) 0.005 0.005 0.005 0.005 0.005 (c2) 0.35 0.35 0.35 0.35 0.35 0.35 (D) 0.1 0.1 0.1 - 0.1 0.1 Tg (°C) of adhesive film -36.8 -37.9 -39.8 -36.2 -37.3 -38.4
- N A is the refractive index of the adhesive film state of the (meth) acrylic copolymer itself having a hydroxyl group except nanoparticles
- N B is the refractive index of the nanoparticles
- is the nanoparticles Is the difference between the refractive index of the (meth) acrylic copolymer having a refractive index and a hydroxyl group.
- the adhesive film of the embodiment of the present invention is maintained in the viscoelastic properties over a wide temperature range, has excellent physical properties in the recovery force and bubble generation area, as well as low haze (transparency) and excellent It can be seen that the adhesive force.
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Abstract
Description
| 실시예 | 비교예 | ||||||
| 1 | 2 | 3 | 4 | 5 | 1 | ||
| (A) | (a1) | 60 | 60 | 60 | 60 | 60 | 60 |
| (a2) | 40 | 40 | 40 | 40 | 40 | 40 | |
| (B) | (b1) | 2.5 | 5 | 10 | - | - | - |
| (b2) | - | - | - | 3 | 5 | - | |
| (C) | (c1) | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
| (c2) | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | |
| (D) | 0.1 | 0.1 | 0.1 | - | 0.1 | 0.1 | |
| 점착필름의 Tg(℃) | -36.8 | -37.9 | -39.8 | -36.2 | -37.3 | -38.4 | |
| NA | 1.44 | 1.44 | 1.44 | 1.44 | 1.44 | 1.44 | |
| | NA- NB| | 0.01 | 0.01 | 0.01 | 0.02 | 0.02 | - | |
| 저장 모듈러스(KPa) | -20℃ | 129 | 198 | 211 | 185 | 202 | 132 |
| 25℃ | 42 | 54 | 66 | 45 | 54 | 30 | |
| 80℃ | 32 | 44 | 57 | 22 | 27 | 8 | |
| 티필(T-peel) 박리강도(gf/in) | 25℃ | 584 | 648 | 961 | 672 | 939 | 756 |
| 60℃ | 302 | 385 | 630 | 456 | 626 | 432 | |
| 헤이즈(%) | 0.95 | 1.01 | 1.12 | 0.98 | 1.05 | 0.87 | |
| 200% 연신 후의 헤이즈(%) | 1.08 | 1.16 | 1.28 | 1.11 | 1.19 | 0.99 | |
| 리커버리력(%) | 47.1 | 59.3 | 78.2 | 48.2 | 60.5 | 27.5 | |
| 기포발생면적(%) | 0 | 0 | 0 | 0 | 0 | 2.01 | |
Claims (25)
- 수산기를 갖는 (메트)아크릴레이트 및 공단량체를 포함하는 단량체 혼합물; 및나노입자;를 포함하는 조성물이고,상기 나노입자는 실리콘계 중합체를 포함하고, 평균입경은 약 5 nm 내지 약 800 nm인 점착제 조성물.
- 제1항에 있어서, 상기 수산기를 갖는 (메트)아크릴레이트는 유리전이온도가(Tg)가 약 -80 ℃ 내지 약 -20 ℃인 점착제 조성물.
- 제1항에 있어서, 상기 공단량체는 알킬 (메트)아크릴레이트 단량체, 에틸렌 옥사이드를 갖는 단량체, 프로필렌 옥사이드를 갖는 단량체, 아민기를 갖는 단량체, 아미드기를 갖는 단량체, 알콕시기를 갖는 단량체, 인산기를 갖는 단량체, 설폰산기를 갖는 단량체, 페닐기를 갖는 단량체 및 실란기를 갖는 단량체 중 하나 이상을 포함하고,상기 공단량체의 유리전이온도(Tg)는 약 -150 ℃ 내지 약 0 ℃인 점착제 조성물.
- 제1항에 있어서, 상기 나노입자는 코어-쉘 구조이고, 상기 코어와 상기 쉘의 유리전이온도는 하기 식 1을 만족하는 점착제 조성물:[식 1]Tg(c) < Tg(s)(상기 식 1에서 Tg(c)는 코어의 유리전이온도(℃)이고, Tg(s)는 쉘의 유리전이온도(℃)이다).
- 제4항에 있어서, 상기 코어의 유리전이온도는 약 -200 ℃ 내지 약 -40 ℃이고, 상기 쉘의 유리전이온도는 약 15 ℃ 내지 약 200 ℃인 점착제 조성물.
- 제4항에 있어서, 상기 코어는 폴리실록산을 포함하고, 상기 쉘은 폴리(메트)아크릴레이트를 포함하는 점착제 조성물.
- 제1항에 있어서, 상기 나노입자는 상기 단량체 혼합물 100 중량부에 대하여 약 0.1 중량부 내지 약 20 중량부로 포함되는 점착제 조성물.
- 제1항에 있어서, 상기 점착제 조성물은 개시제 및 가교제 중 하나 이상을 더 포함하는 점착제 조성물.
- 제1항 내지 제8항 중 어느 하나의 점착제 조성물로 형성된 점착필름.
- 제9항에 있어서, 상기 점착필름은 수산기를 갖는 (메트)아크릴레이트 및 공단량체를 포함하는 단량체 혼합물로부터 중합된 수산기를 갖는 (메트)아크릴계 공중합체를 포함하는 점착필름.
- 제10항에 있어서, 상기 수산기를 갖는 (메트)아크릴계 공중합체는 수산기를 갖는 (메트)아크릴레이트 약 15 중량% 내지 약 45 중량% 및 공단량체 약 55 중량% 내지 약 85 중량%를 포함하는 단량체 혼합물로부터 중합된 것인 점착필름.
- 제10항에 있어서, 상기 점착필름은 나노입자를 더 포함하고, 상기 나노입자는 상기 수산기를 갖는 (메트)아크릴계 공중합체와 굴절률 차이가 약 0.05 이하인 점착필름.
- 제9항에 있어서, 상기 점착필름은 유리전이온도(Tg)가 약 0 ℃ 이하인 점착필름.
- 제9항에 있어서, 상기 점착필름은 80 ℃에서 저장 모듈러스가 약 10 KPa 내지 약 1,000 KPa인 점착필름.
- 제9항에 있어서, 상기 점착필름은 25 ℃에서 저장 모듈러스가 약 10 KPa 내지 약 1,000 KPa인 점착필름.
- 제9항에 있어서, 상기 점착필름은 -20 ℃에서 저장 모듈러스가 약 10 KPa 내지 약 1,000 KPa인 점착필름.
- 제9항에 있어서, 상기 점착필름은 80 ℃에서 저장 모듈러스와 -20 ℃에서 저장 모듈러스의 비율이 약 1 : 1 내지 약 1 : 20인 점착필름.
- 제9항에 있어서, 상기 점착필름은 100 ㎛ 두께에서의 헤이즈가 약 4% 이하인 점착필름.
- 제9항에 있어서, 상기 점착필름은 100 ㎛ 두께에서 200% 연신 후 헤이즈가 약 5% 이하인 점착필름.
- 제9항에 있어서, 상기 점착필름은 100 ㎛ 두께에서, 하기 식 2에 의한 리커버리력이 약 30% 내지 약 98%인 점착필름:[식 2]리커버리력(%)=(1-(Xf/X0))×100(상기 식 2에서, 가로×세로(약 50 mm × 약 20 mm)의 PET(폴리에틸렌테레프탈레이트) 필름(두께: 약 75㎛)의 양 말단부를 각각 제1말단부, 제2말단부라고 할 때, 가로×세로(약 20 mm × 약 20 mm)의 점착필름에 의해 PET 필름 2개 각각의 말단부를 서로 점착시켜, PET 필름의 제1말단부/점착필름(가로 × 세로, 약 20 mm × 약 20 mm)/PET 필름의 제2말단부의 순서로 점착시킨 시편을 제조하고, 상기 PET 필름의 양 말단부에 각각 지그를 고정하고, 한 쪽 지그는 고정시키고, 다른 쪽 지그는 약 300 mm/min의 속도로 당겨 상기 점착필름의 두께(단위: ㎛)의 약 1000%의 길이(두께의 약 10배, X0)에 도달한 후 약 10초 동안 유지하고, 당긴 속도와 동일한 속도로 복원(약 300 mm/min)하여 상기 점착필름에 약 0 kPa의 힘이 가해질 때의 점착필름이 늘어난 길이가 Xf(단위: ㎛)이다).
- 제9항에 있어서, 상기 점착필름 (약 13 cm × 약 3 cm, 두께 약 100 ㎛)의 일면에 약 50 ㎛ 두께의 PET 및 상기 점착필름의 이면에 약 100 ㎛ 두께의 PET이 적층된 점착필름을 약 1 cm 간격의 평행한 틀 사이에, 상기 점착필름의 가로길이가 약 1/2이 되도록 약 50 ㎛ PET 방향으로 구부려서 넣고, 온도 약 70 ℃, 습도 약 93%에서 약 24 시간 에이징(aging)한 경우 기포발생면적이 약 0% 인 점착필름.
- 제9항에 있어서, 상기 점착필름은 코로나 처리된 폴리에틸렌테레프탈레이트(PET) 필름에 대한 25 ℃에서의 티필(T-peel) 박리강도가 약 400 gf/in 내지 약 4,000 gf/in인 점착필름.
- 제9항에 있어서, 상기 점착필름은 코로나 처리된 폴리에틸렌테레프탈레이트(PET) 필름에 대한 60 ℃에서의 티필(T-peel) 박리강도가 약 200 gf/in 내지 약 3,000 gf/in인 점착필름.
- 광학필름; 및상기 광학필름의 일면 또는 양면에 부착된 제9항의 점착필름을 포함하는 디스플레이 부재.
- 제24항에 있어서, 상기 광학필름은 터치패널, 윈도우, 편광판, 칼라필터, 위상차 필름, 타원 편광필름, 반사 편광필름, 반사방지 필름, 보상필름, 휘도 향상필름, 배향막, 광확산 필름, 유리 비산 방지 필름, 표면 보호필름, OLED 소자 배리어층, 플라스틱 LCD 기판, ITO(indium tin oxide), FTO(fluorinated tin oxide), AZO(aluminum dopped zinc oxide), CNT(carbon nanotube) 포함 필름, Ag 나노와이어(nanowire) 포함 필름 또는 그래핀(graphene) 포함 필름을 포함하는 디스플레이 부재.
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| US15/539,104 US20170349791A1 (en) | 2014-12-23 | 2015-12-02 | Adhesive composition, adhesive film formed from same, and display member comprising same |
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| JP7537313B2 (ja) * | 2021-02-26 | 2024-08-21 | 王子ホールディングス株式会社 | 積層体の製造方法 |
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| TWI727092B (zh) * | 2016-09-12 | 2021-05-11 | 南韓商東友精細化工有限公司 | 光學透明黏著劑組成物,及包括該組成物之光學透明黏著劑膜,及平板顯示器 |
| KR102143798B1 (ko) * | 2016-09-12 | 2020-08-12 | 동우 화인켐 주식회사 | 광학 투명 점착제 조성물, 그를 포함하는 광학 투명 점착 필름 및 평판표시장치 |
| JP2018045213A (ja) * | 2016-09-16 | 2018-03-22 | リンテック株式会社 | フレキシブルディスプレイ用粘着剤、粘着シート、フレキシブル積層部材およびフレキシブルディスプレイ |
| CN107828354A (zh) * | 2016-09-16 | 2018-03-23 | 琳得科株式会社 | 柔性显示器用粘着剂、粘着片、柔性层积部件及柔性显示器 |
| CN107828354B (zh) * | 2016-09-16 | 2024-03-26 | 琳得科株式会社 | 柔性显示器用粘着剂、粘着片、柔性层积部件及柔性显示器 |
| KR20180034973A (ko) * | 2016-09-28 | 2018-04-05 | 동우 화인켐 주식회사 | 광학 투명 점착제 조성물, 그를 포함하는 광학 투명 점착 필름 및 평판표시장치 |
| KR102143802B1 (ko) * | 2016-09-28 | 2020-08-12 | 동우 화인켐 주식회사 | 광학 투명 점착제 조성물, 그를 포함하는 광학 투명 점착 필름 및 평판표시장치 |
| JP2018168305A (ja) * | 2017-03-30 | 2018-11-01 | リンテック株式会社 | 粘着シート、積層体、及びデバイス |
| JP2020533633A (ja) * | 2017-09-15 | 2020-11-19 | エルジー・ケム・リミテッド | 粘着剤組成物、偏光板及び光学部材 |
| JP7033654B2 (ja) | 2017-09-15 | 2022-03-10 | 杉金光電(蘇州)有限公司 | 粘着剤組成物、偏光板及び光学部材 |
| US11384265B2 (en) | 2017-09-15 | 2022-07-12 | Shanjin Optoelectronics (Suzhou) Co., Ltd. | Pressure-sensitive adhesive composition, polarizing plate, and optical member |
| JP7069234B2 (ja) | 2020-02-28 | 2022-05-17 | リンテック株式会社 | フレキシブルディスプレイ用粘着シート、フレキシブル積層部材およびフレキシブルディスプレイ |
| JP2020109177A (ja) * | 2020-02-28 | 2020-07-16 | リンテック株式会社 | フレキシブルディスプレイ用粘着シート、フレキシブル積層部材およびフレキシブルディスプレイ |
| US11739236B2 (en) | 2021-01-07 | 2023-08-29 | Samsung Display Co., Ltd. | Resin composition and display device including adhesive layer formed from the same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI580749B (zh) | 2017-05-01 |
| KR20160077565A (ko) | 2016-07-04 |
| TW201623531A (zh) | 2016-07-01 |
| US20170349791A1 (en) | 2017-12-07 |
| KR101822700B1 (ko) | 2018-01-30 |
| JP6710822B2 (ja) | 2020-06-17 |
| JP2018507276A (ja) | 2018-03-15 |
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