WO2016043521A1 - Adhesive composition, optical adhesive film and touch screen panel - Google Patents

Adhesive composition, optical adhesive film and touch screen panel Download PDF

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Publication number
WO2016043521A1
WO2016043521A1 PCT/KR2015/009724 KR2015009724W WO2016043521A1 WO 2016043521 A1 WO2016043521 A1 WO 2016043521A1 KR 2015009724 W KR2015009724 W KR 2015009724W WO 2016043521 A1 WO2016043521 A1 WO 2016043521A1
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acrylate
meth
adhesive composition
sensitive adhesive
pressure
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PCT/KR2015/009724
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French (fr)
Korean (ko)
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김원호
이슬
윤찬오
김장순
박은경
정부기
김민정
김상환
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(주)엘지하우시스
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Publication of WO2016043521A1 publication Critical patent/WO2016043521A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • It relates to an adhesive composition, an optical adhesive film and a touch screen panel.
  • a transparent conductive plastic film is used for light weight and prevention of cracking.
  • a film based on a polyethylene terephthalate (PET) film and a conductive layer such as indium tin oxide (ITO) formed on one surface thereof, and the film is conductive by an adhesive layer. It is laminated
  • PET polyethylene terephthalate
  • ITO indium tin oxide
  • the pressure-sensitive adhesive layer is required for various physical properties such as touch sensitivity and durability.
  • One embodiment of the present invention provides a pressure-sensitive adhesive composition that is excellent in sensitivity to touch and can suppress the problem of cloudiness.
  • Another embodiment of the present invention provides an optical adhesive film prepared from the pressure-sensitive adhesive composition.
  • Another embodiment of the present invention provides a touch screen panel to which the optical pressure-sensitive adhesive film prepared from the pressure-sensitive adhesive composition for touch screen panels is applied.
  • a (meth) acrylic acid ester monomer and a low dielectric monomer photocurable acrylic copolymer resin comprising a resin
  • the low dielectric monomer is composed of a hydroxyl group-containing monomer and N-containing monomer, the hydroxy group-containing monomer It provides a pressure-sensitive adhesive composition of 5 to 15% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
  • the N-containing monomer may be 0.1 to 10% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
  • the pressure-sensitive adhesive composition may have a hydroxyl value of 25 to 70 mg KOH / g.
  • the hydroxy group-containing monomer is 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 8 At least one selected from the group consisting of -hydroxyoctyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acrylate, 2-hydroxypropylene glycol (meth) acrylate, and combinations thereof.
  • the N-containing monomer may be a compound including a double bond and an N-containing functional group.
  • the N-containing functional group may be a primary amine group, a secondary amine group, an imine group, an amino group or a pyridine group.
  • the N-containing monomer may be one selected from the group consisting of (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam, and combinations thereof.
  • the photocurable acrylic copolymer resin may be a four-way copolymer of linear or branched C1-C14 alkyl acrylate, C6-C20 alicyclic condensed ring or fused ring-containing acrylate, hydroxy group-containing monomer and N-containing monomer.
  • the linear or branched C1-C14 alkyl acrylates are methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylic Late, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (Meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, and combinations thereof.
  • the C6-C20 alicyclic condensed ring or fused ring-containing acrylate may include one selected from the group consisting of isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, and combinations thereof.
  • the photocurable acrylic copolymer resin is 30 to 60% by weight of linear or branched C1-C14 alkyl acrylate, 30 to 50% by weight of C6-C20 alicyclic condensed or fused ring-containing acrylate, 5 to 20% by weight of hydroxy group-containing monomer And it may be a copolymer of a monomer consisting of 1 to 10% by weight of the quaternary copolymer of the N-containing monomer.
  • the photoinitiator may include one selected from the group consisting of a benzoin initiator, a hydroxy ketone initiator, an amino ketone initiator caprolactam, and a combination thereof.
  • an optical pressure-sensitive adhesive film comprising a pressure-sensitive adhesive layer containing a photocurable of the pressure-sensitive adhesive composition.
  • the optical adhesive film may have a dielectric constant k value of 3.0 or less measured at a frequency of 100 kHz.
  • a conductive plastic film layer having a conductive layer formed on one surface thereof;
  • a transparent adhesive layer formed by laminating the optical adhesive film on the conductive layer; And it provides a touch screen panel comprising a cover window layer laminated on the optical adhesive film.
  • the conductive plastic film layer may be a polyethylene terephthalate film having a conductive metal oxide layer formed on one surface thereof.
  • the cover window layer may be a transparent glass replacement plastic film or tempered glass.
  • Optical adhesive film prepared from the pressure-sensitive adhesive composition when applied to the touch screen panel improves the sensitivity to touch and cloudiness is suppressed.
  • FIG. 1 is a schematic cross-sectional view of a touch screen panel according to an embodiment of the present invention.
  • (Meth) acrylic acid ester monomer of the present invention and a photocurable acrylic copolymer resin of a low dielectric monomer, wherein the low dielectric monomer is composed of a hydroxyl group-containing monomer and an N-containing monomer, the hydroxy group-containing monomer is the photocurable acrylic copolymer
  • an adhesive composition for a touch screen panel which is about 5 to about 15% by weight of the total monomers constituting the resin.
  • An optical adhesive film used as a bonding medium for bonding a conductive plastic film layer having a conductive layer formed on one surface and a cover window layer in manufacturing a touch screen panel of a display device such as a mobile or a tablet PC is prepared from the pressure-sensitive adhesive composition for the touch screen panel. Can be prepared.
  • the pressure-sensitive adhesive composition for a touch screen panel is formed of an optical adhesive film by photocuring the photocurable acrylic copolymer resin, and the pressure-sensitive adhesive film is optically transparent to be applied to a touch screen panel, and also has a low dielectric constant.
  • the optical adhesive film having a low dielectric constant is useful for applying to a touch screen panel due to increased sensitivity to touch.
  • the optical adhesive film can implement a low dielectric constant at the same time while suppressing the occurrence of clouding phenomenon.
  • the monomer constituting the photocurable acrylic copolymer resin includes the low dielectric monomer, thereby achieving low dielectric constant.
  • the optical pressure-sensitive adhesive film prepared from the pressure-sensitive adhesive composition may have a dielectric constant k value measured at a frequency of about 100 kHz of about 3.0 or less.
  • the optical adhesive film prepared therefrom can realize a low dielectric constant while suppressing the occurrence of a clouding phenomenon.
  • the N-containing monomer may be about 0.1 to about 10% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
  • the optical adhesive film prepared from the photocurable acrylic copolymer resin polymerized by including a hydroxy group-containing monomer and an N-containing monomer as the low dielectric monomer in the content ratio of the above range can realize a low dielectric constant while suppressing the occurrence of cloudiness. .
  • the photocurable acrylic copolymer resin can be used together with the N-containing monomer to use a low dielectric constant by using an appropriate content of the total low dielectric monomer. While implementing, the content of the hydroxy group-containing monomer alone can be lowered, so that the occurrence of cloudiness can be suppressed.
  • the pressure-sensitive adhesive composition may have a hydroxyl value of about 25 to about 70 mg KOH / g.
  • hydroxy group-containing monomer examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth ) Acrylate, 8-hydroxyoctyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acrylate, 2-hydroxypropylene glycol (meth) acrylate, and the like, and may also include combinations thereof. Can be.
  • the N-containing monomer is a compound including a double bond and an N-containing functional group, polymerizable by a double bond, and implements a low dielectric constant by the N-containing functional group, and thus, a structure including a double bond and an N-containing functional group Any compound may be used without limitation.
  • N-containing functional group may be a primary amine group, a secondary amine group, an imine group, an amino group, a pyridine group, and the like.
  • N-containing monomer may include (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam, and the like, and may also include a combination thereof.
  • the (meth) acrylic acid ester monomer linear or branched C1-C14 alkyl acrylate and C6-C20 alicyclic condensed ring or fused ring-containing acrylate are used together, and at the same time, the hydroxy group-containing monomer And N-containing monomers may be copolymerized together to produce a photocurable acrylic copolymer resin. That is, the photocurable acrylic copolymer resin may be a linear or branched C1-C14 alkyl acrylate, C6-C20 alicyclic condensed ring or fused ring-containing acrylate, a hydroxy group-containing monomer and a N-containing monomer.
  • the photocured product of the pressure-sensitive adhesive composition may be adjusted to have appropriate cohesion, glass transition temperature and adhesive properties.
  • the linear or branched C1-C14 alkyl acrylate is methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl ( Meta) acrylate, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, and the like, and may also include a combination thereof.
  • the C6-C20 alicyclic condensed ring or fused ring-containing acrylate can be easily formed to form a physical entanglement (entanglement) of the photo-curable acrylic copolymer resin by a structure including a C6-C20 alicyclic condensed ring or fused ring
  • the cohesive force of the pressure-sensitive adhesive composition is improved, and bubbles are generated when the pressure-sensitive adhesive film is formed.
  • the C6-C20 alicyclic condensed ring or fused ring-containing acrylate may include isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, and the like, and may also include a combination thereof. .
  • the photocurable acrylic copolymer resin comprises about 30 to about 60 weight percent of a linear or branched C1-C14 alkyl acrylate, about 30 to about 50 weight percent of a C6-C20 alicyclic condensed or fused ring-containing acrylate. And a monomer consisting of about 5 to about 20 weight percent of a hydroxy group-containing monomer and about 1 to about 10 weight percent of a quaternary copolymer of N-containing monomer.
  • the pressure-sensitive adhesive composition may further include a photoinitiator to control the degree of polymerization as a photocurable composition.
  • the photoinitiator may be used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the photocurable acrylic copolymer resin, and the type of the photoinitiator is not particularly limited as long as it can generate a radical by light irradiation to initiate a polymerization reaction.
  • it may include one selected from the group consisting of benzoin-based initiator, hydroxy ketone-based initiator, amino ketone-based initiator caprolactam, and combinations thereof.
  • the pressure-sensitive adhesive composition is one selected from the group consisting of an epoxy resin, a crosslinking agent, an ultraviolet stabilizer, an antioxidant, a colorant, a reinforcing agent, a filler, an antifoaming agent, a surfactant, a plasticizer, and a combination thereof in a range that does not affect the effect of the invention. It may further include the above additives.
  • an optical pressure-sensitive adhesive film comprising a pressure-sensitive adhesive layer containing a photocurable of the pressure-sensitive adhesive composition.
  • the optical adhesive film may have a dielectric constant k value measured at a frequency of 100 kHz of about 3.0 or less. As described above, the optical adhesive film may have a low dielectric constant to improve sensitivity when the touch screen panel is applied, and at the same time, the turbidity may be remarkably improved, as described in the adhesive composition.
  • the pressure-sensitive adhesive composition may be prepared by applying the pressure-sensitive adhesive composition on a substrate layer and photocuring the light by light irradiation.
  • Light irradiation refers to the irradiation of electromagnetic waves that can affect the photoinitiator or polymerizable compound to cause a polymerization reaction, wherein the electromagnetic waves are microwaves, infrared rays, ultraviolet rays, X-rays and ⁇ -rays, as well as ⁇ -particle beams, Particle beams such as a proton beam, a neutron beam, and an electron beam are used generically.
  • the method of manufacturing the pressure-sensitive adhesive film by photocuring the pressure-sensitive adhesive composition is not particularly limited.
  • the optical pressure-sensitive adhesive film can be produced by applying the above-described pressure-sensitive adhesive composition or a coating solution prepared by adding a solvent thereto to a suitable process substrate by a known means such as a bar coater, and curing.
  • the curing process is carried out after sufficiently removing the bubble-inducing components such as volatile components or reaction residues contained in the pressure-sensitive adhesive composition or the coating solution, to appropriately give the crosslinking density or molecular weight, elastic modulus, etc. of the cured product,
  • the bubbles present in the adhesive interface may be increased to prevent a problem of forming scatterers therein.
  • the method of hardening the said adhesive composition or its coating liquid is not specifically limited, For example, the process of irradiating an ultraviolet-ray to the coating layer formed by the said adhesive composition for touch panels or its coating liquid, or aging under predetermined conditions.
  • the curing process may be performed through.
  • the photocuring can be carried out, for example, by UV irradiation.
  • UV irradiation performed for the photocuring may be performed for about 10 seconds to about 15 seconds with a metal halide lamp that is commonly used.
  • the amount of light irradiated with UV is preferably about 0.5 J / cm 2 to about 2.0 J / cm 2 , and more preferably about 1.0 J / cm 2 to about 1.5 J / cm 2 .
  • the optical adhesive film may have a thickness of about 50 ⁇ m to about 300 ⁇ m, specifically about 100 ⁇ m to about 200 ⁇ m. By making the optical adhesive film have a thickness in the above range, while being applicable to a thin touch panel or a touch screen, it is possible to implement an adhesive film having excellent durability.
  • a conductive plastic film layer having a conductive layer formed on one surface; A transparent adhesive layer formed by laminating the optical adhesive film on the conductive layer; And it provides a touch screen panel comprising a cover window layer laminated on the optical adhesive film.
  • the cover window layer may use a transparent glass replacement plastic film developed as a material capable of replacing tempered glass or tempered glass.
  • the glass replacement plastic film may be formed by imparting various functionalities to each layer in a multilayer structure.
  • FIG. 1 is a schematic cross-sectional view of the touch screen panel 100.
  • the touch screen panel 100 may include a cover window layer 150; Transparent adhesive layer 110; A conductive plastic film layer 130 having a conductive layer 132 formed on one surface of the plastic substrate layer 131; And a transparent substrate 160.
  • the touch screen panel 100 including each layer as described above may be attached to a display device such as a liquid crystal display (LCD) 170.
  • LCD liquid crystal display
  • the transparent adhesive layer 110 is a layer formed by photocuring the pressure-sensitive adhesive composition, the detailed description of the optical adhesive film is as described above.
  • the specific kind of the conductive plastic film layer 130 is not particularly limited, and a conductive film known in the art may be used.
  • the conductive film 130 may be a transparent plastic film having an ITO electrode layer formed as a conductive layer 132 on one surface thereof.
  • the transparent plastic film forming the plastic base layer 131 polyethylene terephthalate film, polytetrafluoroethylene film, polyethylene film, polypropylene film, polybutene film, polybutadiene film, vinyl chloride air Copolymer film, polyurethane film, ethylene-vinyl acetate film, ethylene-propylene copolymer film, ethylene-ethyl acrylate copolymer film, ethylene-methyl acrylate copolymer film or polyimide film and the like can be used, but are not limited thereto. More specifically, the plastic base layer 131 may be a polyethylene terephthalate (PET) film.
  • PET polyethylene terephthalate
  • a-methoxy-a-hydroxyacetophenone Igacure 651, Ciba
  • 1,6-hexanedioldi 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin.
  • 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition.
  • the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 ⁇ m and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
  • Example 2 The same method as in Example 1 except that 85 parts by weight of ethylhexyl acrylate, 10 parts by weight of hydroxypropyl acrylate, and 5 parts by weight of N-vinyl pyrrolidone were prepared and used. An optical pressure-sensitive adhesive film was prepared.
  • the hydroxyl value of the photocurable acrylic copolymer resin prepared above is 41 mg KOH / g.
  • a-methoxy-a-hydroxyacetophenone Igacure 651, Ciba
  • 1,6-hexanedioldi 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin.
  • 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition.
  • the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 ⁇ m and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
  • a-methoxy-a-hydroxyacetophenone Igacure 651, Ciba
  • 1,6-hexanedioldi 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin.
  • 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition.
  • the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 ⁇ m and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
  • An optical pressure-sensitive adhesive film was manufactured in the same manner as in Example 1 except that 90 parts by weight of ethylhexyl acrylate and 10 parts by weight of hydroxypropyl acrylate were used to prepare a photocurable acrylic copolymer resin.
  • the hydroxyl value of the photocurable acrylic copolymer resin prepared above is 41 mg KOH / g.
  • An optical pressure-sensitive adhesive film was prepared in the same manner as in Example 1 except that 85 parts by weight of ethylhexyl acrylate and 15 parts by weight of hydroxypropyl acrylate were used to prepare a photocurable acrylic copolymer resin.
  • the hydroxyl value of the photocurable acrylic copolymer resin prepared above is 62 mg KOH / g.
  • the dielectric constant k was measured by contacting electrodes on both sides of the optical adhesive films prepared in Examples 1-4 and Comparative Examples 1-2, and the dielectric constant k was measured according to the following conditions and shown in Table 1 below.
  • Electrode diameter 5 mm
  • Example 1-4 did not cause turbidity, it was confirmed that a low dielectric constant of 3.0 or less.
  • LCD liquid crystal display

Abstract

Provided is an adhesive composition comprising a (meth)acrylic acid ester-based monomer and a light-curing acrylic-based polymer resin of a low dielectric monomer, wherein the low dielectric monomer comprises a hydroxyl group-containing monomer and an N-containing monomer, and the hydroxyl group-containing monomer is 5-15 wt% of the total monomers contained in the light-curing acrylic-based polymer resin.

Description

점착제 조성물, 광학용 점착 필름 및 터치 스크린 패널Adhesive composition, optical adhesive film and touch screen panel
점착제 조성물, 광학용 점착 필름 및 터치 스크린 패널에 관한 것이다.It relates to an adhesive composition, an optical adhesive film and a touch screen panel.
근래, PDA, 이동통신 단말기 또는 차량용 네비게이션 등과 같은 전자 기기가 큰 시장을 형성하고 있다. 이와 같은 전자 기기에 있어서, 추구되는 기술적 목표는 주로 박형화, 경량화, 저전력 소비화, 고해상도화 및 고휘도화 등을 들 수 있다. In recent years, electronic devices such as PDAs, mobile communication terminals, or vehicle navigation systems are forming a large market. In such an electronic device, the technical aims pursued are mainly thinner, lighter, lower power consumption, higher resolution, and higher brightness.
한편, 입력 조작부에 터치스크린 또는 터치패널 스위치가 설치된 전자 기기는, 경량화 및 깨짐 방지 등을 위하여, 투명 도전성 플라스틱 필름이 사용되고 있다. 그 예로는, 폴리에틸렌테레프탈레이트(PolyEthylenTerephthalate, PET) 필름을 기재로 하고, 그 일면에 인듐 주석 산화물(Indium Tin Oxide, ITO) 등의 도전층을 형성한 필름이 있으며, 상기 필름은 점착제층에 의해 전도성 유리, 보강재 또는 데코 필름 등에 적층되어 있다. On the other hand, in an electronic device provided with a touch screen or a touch panel switch in an input operation unit, a transparent conductive plastic film is used for light weight and prevention of cracking. Examples thereof include a film based on a polyethylene terephthalate (PET) film, and a conductive layer such as indium tin oxide (ITO) formed on one surface thereof, and the film is conductive by an adhesive layer. It is laminated | stacked on glass, a reinforcing material, or a decoration film.
상기 점착제층은 터치 민감도, 내구성 등의 다양한 물성이 요구된다.The pressure-sensitive adhesive layer is required for various physical properties such as touch sensitivity and durability.
본 발명의 일 구현예는 터치에 대한 민감도가 우수하고, 백탁 현상 문제를 억제할 수 있는 점착제 조성물을 제공한다.One embodiment of the present invention provides a pressure-sensitive adhesive composition that is excellent in sensitivity to touch and can suppress the problem of cloudiness.
본 발명의 다른 구현예는 상기 점착제 조성물로부터 제조된 광학용 점착 필름을 제공한다.Another embodiment of the present invention provides an optical adhesive film prepared from the pressure-sensitive adhesive composition.
본 발명의 또 다른 구현예는 상기 터치 스크린 패널용 점착제 조성물로부터 제조된 광학용 점착 필름을 적용한 터치 스크린 패널을 제공한다.Another embodiment of the present invention provides a touch screen panel to which the optical pressure-sensitive adhesive film prepared from the pressure-sensitive adhesive composition for touch screen panels is applied.
본 발명의 일 구현예에서, (메타)아크릴산 에스테르계 모노머 및 저유전성 모노머의 광경화성 아크릴계 공중합 수지를 포함하고, 상기 저유전성 모노머는 히드록시기 함유 모노머 및 N 함유 모노머로 이루어지고, 상기 히드록시기 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 5 내지 15 중량%인 점착제 조성물을 제공한다.In one embodiment of the present invention, a (meth) acrylic acid ester monomer and a low dielectric monomer photocurable acrylic copolymer resin comprising a resin, the low dielectric monomer is composed of a hydroxyl group-containing monomer and N-containing monomer, the hydroxy group-containing monomer It provides a pressure-sensitive adhesive composition of 5 to 15% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
상기 N 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 0.1 내지 10 중량%일 수 있다.The N-containing monomer may be 0.1 to 10% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
상기 점착제 조성물은 수산가가 25 내지 70 mg KOH/g일 수 있다. The pressure-sensitive adhesive composition may have a hydroxyl value of 25 to 70 mg KOH / g.
상기 히드록시기 함유 모노머는 2-히드록시에틸 (메타)아크릴레이트, 2-히드록시프로필 (메타)아크릴레이트, 4-히드록시부틸 (메타)아크릴레이트, 6-히드록시헥실 (메타)아크릴레이트, 8-히드록시옥틸 (메타)아크릴레이트, 2-히드록시에틸렌글리콜 (메타)아크릴레이트, 2-히드록시프로필렌글리콜 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함할 수 있다.The hydroxy group-containing monomer is 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 8 At least one selected from the group consisting of -hydroxyoctyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acrylate, 2-hydroxypropylene glycol (meth) acrylate, and combinations thereof.
상기 N 함유 모노머는 이중결합 및 N 함유 관능기를 포함하는 화합물일 수 있다.The N-containing monomer may be a compound including a double bond and an N-containing functional group.
상기 N 함유 관능기는 1차아민기, 2차아민기, 이민기, 아미노기 또는 피리딘기일 수 있다.The N-containing functional group may be a primary amine group, a secondary amine group, an imine group, an amino group or a pyridine group.
상기 N 함유 모노머는 (메타)아크릴아미드, N-비닐 피롤리돈, N-비닐 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나일 수 있다.The N-containing monomer may be one selected from the group consisting of (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam, and combinations thereof.
상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트, 히드록시기 함유 모노머 및 N 함유 모노머의 4원 공중합체일 수 있다.The photocurable acrylic copolymer resin may be a four-way copolymer of linear or branched C1-C14 alkyl acrylate, C6-C20 alicyclic condensed ring or fused ring-containing acrylate, hydroxy group-containing monomer and N-containing monomer.
상기 선형 또는 분지형 C1-C14 알킬 아크릴레이트는 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, n-프로필 (메타)아크릴레이트, 이소프로필 (메타)아크릴레이트, n-부틸 (메타)아크릴레이트, t-부틸 (메타)아크릴레이트, sec-부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 2-에틸헥실 (메타)아크릴레이트, 2-에틸부틸 (메타)아크릴레이트, n-옥틸(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 이소노닐 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함할 수 있다.The linear or branched C1-C14 alkyl acrylates are methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylic Late, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (Meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, and combinations thereof.
상기 C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트는 이소보닐 (메타)아크릴레이트, 시클로헥실 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함할 수 있다.The C6-C20 alicyclic condensed ring or fused ring-containing acrylate may include one selected from the group consisting of isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, and combinations thereof.
상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트 30 내지 60 중량%, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트 30 내지 50 중량%, 히드록시기 함유 모노머 5 내지 20 중량% 및 N 함유 모노머의 4원 공중합체 1 내지 10 중량%로 구성된 모노머의 공중합체일 수 있다.The photocurable acrylic copolymer resin is 30 to 60% by weight of linear or branched C1-C14 alkyl acrylate, 30 to 50% by weight of C6-C20 alicyclic condensed or fused ring-containing acrylate, 5 to 20% by weight of hydroxy group-containing monomer And it may be a copolymer of a monomer consisting of 1 to 10% by weight of the quaternary copolymer of the N-containing monomer.
광개시제를 더 포함할 수 있다.It may further include a photoinitiator.
상기 광개시제는 벤조인계 개시제, 히드록시 케톤계 개시제, 아미노 케톤계 개시제 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함할 수 있다.The photoinitiator may include one selected from the group consisting of a benzoin initiator, a hydroxy ketone initiator, an amino ketone initiator caprolactam, and a combination thereof.
본 발명의 다른 구현예에서, 상기 점착제 조성물의 광경화물을 포함하는 점착제층을 포함하는 광학용 점착 필름을 제공한다.In another embodiment of the present invention, it provides an optical pressure-sensitive adhesive film comprising a pressure-sensitive adhesive layer containing a photocurable of the pressure-sensitive adhesive composition.
상기 광학용 점착 필름은 주파수 100kHz에서 측정된 유전 상수 k 값이 3.0 이하일 수 있다.The optical adhesive film may have a dielectric constant k value of 3.0 or less measured at a frequency of 100 kHz.
본 발명의 또 다른 구현예에서,In another embodiment of the invention,
일면에 도전층이 형성된 전도성 플라스틱 필름층; 상기 도전층 상부에 상기 광학용 점착 필름이 적층되어 형성된 투명 점착층; 및 상기 광학용 점착 필름의 상부에 적층된 커버 윈도우층을 포함하는 터치 스크린 패널을 제공한다.A conductive plastic film layer having a conductive layer formed on one surface thereof; A transparent adhesive layer formed by laminating the optical adhesive film on the conductive layer; And it provides a touch screen panel comprising a cover window layer laminated on the optical adhesive film.
상기 전도성 플라스틱 필름층이 도전성 금속 산화물층이 일면에 형성된 폴리에틸렌테레프탈레이트 필름일 수 있다.The conductive plastic film layer may be a polyethylene terephthalate film having a conductive metal oxide layer formed on one surface thereof.
상기 커버 윈도우층은 투명한 유리 대체 플라스틱 필름 또는 강화 유리일 수 있다.The cover window layer may be a transparent glass replacement plastic film or tempered glass.
상기 점착제 조성물로부터 제조된 광학용 점착 필름은 터치 스크린 패널에 적용시 터치에 대한 민감도를 향상시키고 백탁 현상이 억제된다.Optical adhesive film prepared from the pressure-sensitive adhesive composition when applied to the touch screen panel improves the sensitivity to touch and cloudiness is suppressed.
도 1은 본 발명의 일 구현예에 따른 터치 스크린 패널의 개략적인 단면도이다.1 is a schematic cross-sectional view of a touch screen panel according to an embodiment of the present invention.
이하, 본 발명의 구현예를 상세히 설명하기로 한다. 다만, 이는 예시로서 제시되는 것으로, 이에 의해 본 발명이 제한되지는 않으며 본 발명은 후술할 청구항의 범주에 의해 정의될 뿐이다.Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, by which the present invention is not limited and the present invention is defined only by the scope of the claims to be described later.
본 발명의 (메타)아크릴산 에스테르계 모노머 및 저유전성 모노머의 광경화성 아크릴계 공중합 수지를 포함하고, 상기 저유전성 모노머는 히드록시기 함유 모노머 및 N 함유 모노머로 이루어지고, 상기 히드록시기 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 약 5 내지 약 15 중량%인 터치 스크린 패널용 점착제 조성물을 제공한다. (Meth) acrylic acid ester monomer of the present invention, and a photocurable acrylic copolymer resin of a low dielectric monomer, wherein the low dielectric monomer is composed of a hydroxyl group-containing monomer and an N-containing monomer, the hydroxy group-containing monomer is the photocurable acrylic copolymer Provided is an adhesive composition for a touch screen panel which is about 5 to about 15% by weight of the total monomers constituting the resin.
모바일, 태블릿 PC 등과 같은 표시 장치의 터치 스크린 패널 제조시 일면에 도전층이 형성된 전도성 플라스틱 필름층과 커버 윈도우층을 합착하기 위한 결합 매체로 사용되는 광학용 점착 필름을 상기 터치 스크린 패널용 점착제 조성물로부터 제조될 수 있다.An optical adhesive film used as a bonding medium for bonding a conductive plastic film layer having a conductive layer formed on one surface and a cover window layer in manufacturing a touch screen panel of a display device such as a mobile or a tablet PC is prepared from the pressure-sensitive adhesive composition for the touch screen panel. Can be prepared.
상기 터치 스크린 패널용 점착제 조성물은 상기 광경화성 아크릴계 공중합 수지를 광경화시켜 광학용 점착 필름으로 형성되고, 상기 점착 필름은 광학적으로 투명하게 형성되어 터치 스크린 패널에 적용이 가능하고, 또한, 낮은 유전율을 갖는다. 이와 같이 낮은 유전율을 갖는 광학용 점착 필름은 터치에 대한 민감도가 증대되어 터치 스크린 패널에 적용하기 유용하다. 또한, 상기 광학용 점착 필름은 백탁 현상의 발생이 억제되면서도 동시에 낮은 유전율을 구현할 수 있다.The pressure-sensitive adhesive composition for a touch screen panel is formed of an optical adhesive film by photocuring the photocurable acrylic copolymer resin, and the pressure-sensitive adhesive film is optically transparent to be applied to a touch screen panel, and also has a low dielectric constant. Have As such, the optical adhesive film having a low dielectric constant is useful for applying to a touch screen panel due to increased sensitivity to touch. In addition, the optical adhesive film can implement a low dielectric constant at the same time while suppressing the occurrence of clouding phenomenon.
상기 광경화성 아크릴계 공중합 수지를 구성하는 모노머는 상기 저유전성 모노머를 포함함으로써, 낮은 유전율을 구현할 수 있다. 예를 들어, 상기 점착제 조성물로부터 제조된 광학용 점착 필름은 주파수 약 100kHz에서 측정된 유전 상수 k 값이 약 3.0 이하일 수 있다.The monomer constituting the photocurable acrylic copolymer resin includes the low dielectric monomer, thereby achieving low dielectric constant. For example, the optical pressure-sensitive adhesive film prepared from the pressure-sensitive adhesive composition may have a dielectric constant k value measured at a frequency of about 100 kHz of about 3.0 or less.
또한, 상기 저유전성 모노머는 히드록시기 함유 모노머 및 N 함유 모노머를 함께 포함함으로써, 이로부터 제조된 광학용 점착 필름은 백탁 현상의 발생이 억제되면서도 동시에 낮은 유전율을 구현할 수 있다. In addition, since the low dielectric monomer includes a hydroxyl group-containing monomer and an N-containing monomer together, the optical adhesive film prepared therefrom can realize a low dielectric constant while suppressing the occurrence of a clouding phenomenon.
일 구현예에서, 상기 N 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 약 0.1 내지 약 10 중량%일 수 있다.In one embodiment, the N-containing monomer may be about 0.1 to about 10% by weight of the total monomer constituting the photocurable acrylic copolymer resin.
상기 범위의 함량비로 히드록시기 함유 모노머 및 N 함유 모노머를 상기 저유전성 모노머로 포함시켜 중합된 상기 광경화성 아크릴계 공중합 수지로부터 제조된 광학용 점착 필름은 백탁 현상의 발생이 억제되면서도 동시에 낮은 유전율을 구현할 수 있다. The optical adhesive film prepared from the photocurable acrylic copolymer resin polymerized by including a hydroxy group-containing monomer and an N-containing monomer as the low dielectric monomer in the content ratio of the above range can realize a low dielectric constant while suppressing the occurrence of cloudiness. .
히드록시기 함유 모노머만을 단독 사용한 경우 저유전율 구현할 수 있지만, 동시에, 백탁 현상을 발생시킬 수 있는데, 상기 광경화성 아크릴계 공중합 수지는 상기 N 함유 모노머 함께 사용하여 총 저유전성 모노머를 적절한 함량으로 사용함으로써 저유전율을 구현하면서도, 상기 히드록시기 함유 모노머만의 함량은 낮출 수 있어서, 백탁 현상 발생은 억제할 수 있다.When only the hydroxy group-containing monomer alone is used, low dielectric constant can be realized, but at the same time, it can cause cloudiness. The photocurable acrylic copolymer resin can be used together with the N-containing monomer to use a low dielectric constant by using an appropriate content of the total low dielectric monomer. While implementing, the content of the hydroxy group-containing monomer alone can be lowered, so that the occurrence of cloudiness can be suppressed.
예를 들어, 상기 점착제 조성물은 수산가가 약 25 내지 약 70 mg KOH/g일 수 있다.For example, the pressure-sensitive adhesive composition may have a hydroxyl value of about 25 to about 70 mg KOH / g.
상기 히드록시기 함유 모노머의 구체적인 예를 들면, 2-히드록시에틸 (메타)아크릴레이트, 2-히드록시프로필 (메타)아크릴레이트, 4-히드록시부틸 (메타)아크릴레이트, 6-히드록시헥실 (메타)아크릴레이트, 8-히드록시옥틸 (메타)아크릴레이트, 2-히드록시에틸렌글리콜 (메타)아크릴레이트, 2-히드록시프로필렌글리콜 (메타)아크릴레이트 등일 수 있고, 또한, 이들의 조합을 포함할 수 있다.Specific examples of the hydroxy group-containing monomer include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth ) Acrylate, 8-hydroxyoctyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acrylate, 2-hydroxypropylene glycol (meth) acrylate, and the like, and may also include combinations thereof. Can be.
상기 N 함유 모노머는 이중결합 및 N 함유 관능기를 포함하는 화합물로서, 이중결합에 의해 중합가능하고, 상기 N 함유 관능기에 의해 저유전율을 구현하며, 이와 같이, 이중결합 및 N 함유 관능기를 포함하는 구조의 화합물이라면 제한없이 사용될 수 있다.The N-containing monomer is a compound including a double bond and an N-containing functional group, polymerizable by a double bond, and implements a low dielectric constant by the N-containing functional group, and thus, a structure including a double bond and an N-containing functional group Any compound may be used without limitation.
상기 N 함유 관능기의 구체적인 예를 들면, 1차아민기, 2차아민기, 이민기, 아미노기, 피리딘기 등일 수 있다.Specific examples of the N-containing functional group may be a primary amine group, a secondary amine group, an imine group, an amino group, a pyridine group, and the like.
상기 N 함유 모노머에 대한 구체적인 예를 들면, (메타)아크릴아미드, N-비닐 피롤리돈, N-비닐 카프로락탐 등을 포함할 수 있고, 또한, 이들의 조합을 포함할 수 있다. Specific examples of the N-containing monomer may include (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam, and the like, and may also include a combination thereof.
일 구현예에서, 상기 (메타)아크릴산 에스테르계 모노머로서, 선형 또는 분지형 C1-C14 알킬 아크릴레이트 및 C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트를 함께 사용하고, 동시에, 상기 히드록시기 함유 모노머 및 N 함유 모노머를 함께 공중합하여, 광경화성 아크릴계 공중합 수지를 제조할 수 있다. 즉, 상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트, 히드록시기 함유 모노머 및 N 함유 모노머의 4원 공중합체일 수 있다.In one embodiment, as the (meth) acrylic acid ester monomer, linear or branched C1-C14 alkyl acrylate and C6-C20 alicyclic condensed ring or fused ring-containing acrylate are used together, and at the same time, the hydroxy group-containing monomer And N-containing monomers may be copolymerized together to produce a photocurable acrylic copolymer resin. That is, the photocurable acrylic copolymer resin may be a linear or branched C1-C14 alkyl acrylate, C6-C20 alicyclic condensed ring or fused ring-containing acrylate, a hydroxy group-containing monomer and a N-containing monomer.
선형 또는 분지형 C1-C14 알킬 아크릴레이트의 종류 및 함량을 조절하여 상기 점착제 조성물의 광경화물이 적절한 응집력, 유리전이온도 및 점착 특성을 가지도록 조절할 수 있다.By adjusting the type and content of linear or branched C1-C14 alkyl acrylate, the photocured product of the pressure-sensitive adhesive composition may be adjusted to have appropriate cohesion, glass transition temperature and adhesive properties.
구체적으로, 상기 선형 또는 분지형 C1-C14 알킬 아크릴레이트는 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, n-프로필 (메타)아크릴레이트, 이소프로필 (메타)아크릴레이트, n-부틸 (메타)아크릴레이트, t-부틸 (메타)아크릴레이트, sec-부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 2-에틸헥실 (메타)아크릴레이트, 2-에틸부틸 (메타)아크릴레이트, n-옥틸(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 이소노닐 (메타)아크릴레이트 등을 포함할 수 있고, 또한, 이들의 조합을 포함할 수 있다.Specifically, the linear or branched C1-C14 alkyl acrylate is methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl ( Meta) acrylate, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, and the like, and may also include a combination thereof.
상기 C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트는 C6-C20 지환족 축합고리 또는 융합고리를 포함하는 구조에 의해 상기 광경화성 아크릴계 공중합 수지가 물리적으로 얽힌 구조 (entanglement)를 형성하기 용이해져서 점착제 조성물의 응집력을 향상시키고, 점착 필름 형성시 기포 발생이 억제되도록 한다.The C6-C20 alicyclic condensed ring or fused ring-containing acrylate can be easily formed to form a physical entanglement (entanglement) of the photo-curable acrylic copolymer resin by a structure including a C6-C20 alicyclic condensed ring or fused ring The cohesive force of the pressure-sensitive adhesive composition is improved, and bubbles are generated when the pressure-sensitive adhesive film is formed.
구체적으로, 상기 C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트는 이소보닐 (메타)아크릴레이트, 시클로헥실 (메타)아크릴레이트 등을 포함할 수 있고, 또한, 이들의 조합을 포함할 수 있다. Specifically, the C6-C20 alicyclic condensed ring or fused ring-containing acrylate may include isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, and the like, and may also include a combination thereof. .
다른 구현예에서, 상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트 약 30 내지 약 60 중량%, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트 약 30 내지 약 50 중량%, 히드록시기 함유 모노머 약 5 내지 약 20 중량% 및 N 함유 모노머의 4원 공중합체 약 1 내지 약 10 중량%로 구성된 모노머의 공중합체일 수 있다.In another embodiment, the photocurable acrylic copolymer resin comprises about 30 to about 60 weight percent of a linear or branched C1-C14 alkyl acrylate, about 30 to about 50 weight percent of a C6-C20 alicyclic condensed or fused ring-containing acrylate. And a monomer consisting of about 5 to about 20 weight percent of a hydroxy group-containing monomer and about 1 to about 10 weight percent of a quaternary copolymer of N-containing monomer.
상기 점착제 조성물은 광경화형 조성물로서 중합도를 조절하기 위하여 광개시제를 더 포함할 수 있다. 상기 광개시제는 상기 광경화성 아크릴계 공중합 수지 100 중량부 기준 0.01 내지 10 중량부 함량으로 사용될 수 있고, 상기 광개시제의 종류는 광조사에 의해 라디칼을 발생시켜, 중합 반응을 개시시킬 수있는 것이라면, 특별히 한정되지 않으며, 예를 들어, 벤조인계 개시제, 히드록시 케톤계 개시제, 아미노 케톤계 개시제 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함할 수 있다.The pressure-sensitive adhesive composition may further include a photoinitiator to control the degree of polymerization as a photocurable composition. The photoinitiator may be used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the photocurable acrylic copolymer resin, and the type of the photoinitiator is not particularly limited as long as it can generate a radical by light irradiation to initiate a polymerization reaction. For example, it may include one selected from the group consisting of benzoin-based initiator, hydroxy ketone-based initiator, amino ketone-based initiator caprolactam, and combinations thereof.
또한, 상기 점착제 조성물은 발명의 효과에 영향을 미치지 않는 범위에서, 에폭시 수지, 가교제, 자외선 안정제, 산화 방지제, 조색제, 보강제, 충진제, 소포제, 계면 활성제, 가소제 및 이들의 조합으로 이루어진 군으로부터 선택된 하나 이상의 첨가제를 더 포함할 수 있다.In addition, the pressure-sensitive adhesive composition is one selected from the group consisting of an epoxy resin, a crosslinking agent, an ultraviolet stabilizer, an antioxidant, a colorant, a reinforcing agent, a filler, an antifoaming agent, a surfactant, a plasticizer, and a combination thereof in a range that does not affect the effect of the invention. It may further include the above additives.
본 발명의 또 다른 구현예에서, 상기 점착제 조성물의 광경화물을 포함하는 점착제층을 포함하는 광학용 점착 필름을 제공한다.In another embodiment of the present invention, it provides an optical pressure-sensitive adhesive film comprising a pressure-sensitive adhesive layer containing a photocurable of the pressure-sensitive adhesive composition.
상기 광학용 점착 필름은 주파수 100kHz에서 측정된 유전 상수 k 값이 약 3.0 이하일 수 있다. 이와 같이 상기 광학용 점착 필름은 저유전율을 가져서 터치 스크린 패널 적용시 민감도를 향상시킬 수 있고, 또한, 동시에 백탁 현상은 현저히 개선될 수 있는 바 이는 상기 점착제 조성물에서 설명한 바와 같다.The optical adhesive film may have a dielectric constant k value measured at a frequency of 100 kHz of about 3.0 or less. As described above, the optical adhesive film may have a low dielectric constant to improve sensitivity when the touch screen panel is applied, and at the same time, the turbidity may be remarkably improved, as described in the adhesive composition.
상기 점착제 조성물을 기재층 상에 도포한 뒤 광조사에 의해 광경화하여 점착 필름을 제조할 수 있다. "광조사"는 광개시제 또는 중합성 화합물에 영향을 주어 중합 반응을 유발할 수 있는 전자기파의 조사를 의미하며, 상기에서 전자기파는 마이크로파, 적외선, 자외선, X선 및 γ선은 물론, α-입자선, 프로톤빔(proton beam), 뉴트론빔(neutron beam) 및 전자선(electron beam)과 같은 입자빔을 총칭하는 의미로 사용된다.The pressure-sensitive adhesive composition may be prepared by applying the pressure-sensitive adhesive composition on a substrate layer and photocuring the light by light irradiation. "Light irradiation" refers to the irradiation of electromagnetic waves that can affect the photoinitiator or polymerizable compound to cause a polymerization reaction, wherein the electromagnetic waves are microwaves, infrared rays, ultraviolet rays, X-rays and γ-rays, as well as α-particle beams, Particle beams such as a proton beam, a neutron beam, and an electron beam are used generically.
상기 점착제 조성물을 광경화시켜 상기 점착 필름을 제조하는 방법은 특별히 제한되지 않는다. 예를 들면 상술한 상기 점착제 조성물 또는 여기에 용제를 추가하여 제조한 코팅액을, 바코터 등의 공지된 수단으로 적절한 공정 기재에 도포하고, 경화시키는 방법으로 상기 광학용 점착 필름을 제조할 수 있다.The method of manufacturing the pressure-sensitive adhesive film by photocuring the pressure-sensitive adhesive composition is not particularly limited. For example, the optical pressure-sensitive adhesive film can be produced by applying the above-described pressure-sensitive adhesive composition or a coating solution prepared by adding a solvent thereto to a suitable process substrate by a known means such as a bar coater, and curing.
상기 경화 과정은, 점착제 조성물 또는 코팅액 내부에 포함된 휘발 성분 또는 반응 잔류물과 같은 기포 유발 성분을 충분히 제거한 후, 수행하여, 상기 경화물의 가교 밀도 또는 분자량, 탄성률 등을 적절하게 부여하고, 고온 상태에서 점착 계면에 존재하는 기포들이 커져 내부에서 산란체를 형성하는 문제점 등을 방지할 수 있다.The curing process is carried out after sufficiently removing the bubble-inducing components such as volatile components or reaction residues contained in the pressure-sensitive adhesive composition or the coating solution, to appropriately give the crosslinking density or molecular weight, elastic modulus, etc. of the cured product, The bubbles present in the adhesive interface may be increased to prevent a problem of forming scatterers therein.
또한, 상기 점착제 조성물 또는 그 코팅액을 경화시키는 방법은 특별히 한정되지 않고, 예를 들면, 상기 터치패널용 점착제 조성물 또는 그 코팅액에 의해 형성된 코팅층에 자외선을 조사하거나, 소정 조건에서 숙성(aging)하는 공정을 거쳐 경화 공정을 수행할 수 있다.In addition, the method of hardening the said adhesive composition or its coating liquid is not specifically limited, For example, the process of irradiating an ultraviolet-ray to the coating layer formed by the said adhesive composition for touch panels or its coating liquid, or aging under predetermined conditions. The curing process may be performed through.
상기 광경화는 예를 들어 UV 조사에 의해 수행할 수 있다. The photocuring can be carried out, for example, by UV irradiation.
상기 광경화하기 위해 수행하는 UV 조사는 통상적으로 쓰이는 금속 할라이드 램프(Metal halide lamp)로 약 10초 내지 약 15초 동안 수행할 수 있다. UV irradiation performed for the photocuring may be performed for about 10 seconds to about 15 seconds with a metal halide lamp that is commonly used.
상기 UV 조사되는 광량은 바람직하게는 약 0.5J/cm2 내지 약 2.0 J/cm2 이 바람직하며 더욱 바람직하게는 약 1.0 J/cm2 내지 약 1.5 J/cm2 조사한다.The amount of light irradiated with UV is preferably about 0.5 J / cm 2 to about 2.0 J / cm 2 , and more preferably about 1.0 J / cm 2 to about 1.5 J / cm 2 .
상기 광학용 점착 필름은, 두께가 약 50 ㎛ 내지 약 300 ㎛, 구체적으로 약 100 ㎛ 내지 약 200 ㎛일 수 있다. 상기 광학용 점착 필름이 상기 범위의 두께를 갖도록 하여, 박형의 터치 패널 또는 터치 스크린에 적용 가능하면서도, 내구성이 우수한 점착 필름을 구현할 수 있다.The optical adhesive film may have a thickness of about 50 μm to about 300 μm, specifically about 100 μm to about 200 μm. By making the optical adhesive film have a thickness in the above range, while being applicable to a thin touch panel or a touch screen, it is possible to implement an adhesive film having excellent durability.
본 발명의 또 다른 구현예에서, 일면에 도전층이 형성된 전도성 플라스틱 필름층; 상기 도전층 상부에 상기 광학용 점착 필름이 적층되어 형성된 투명 점착층; 및 상기 광학용 점착 필름의 상부에 적층된 커버 윈도우층을 포함하는 터치 스크린 패널을 제공한다.In another embodiment of the present invention, a conductive plastic film layer having a conductive layer formed on one surface; A transparent adhesive layer formed by laminating the optical adhesive film on the conductive layer; And it provides a touch screen panel comprising a cover window layer laminated on the optical adhesive film.
상기 커버 윈도우층은 강화 유리 또는 강화 유리를 대체할 수 있는 소재로서 개발된 투명한 유리 대체 플라스틱 필름을 사용할 수 있다. 상기 유리 대체 플라스틱 필름의 경우 다층 구조로 각 층에 다양한 기능성을 부여하여 형성할 수 있다. The cover window layer may use a transparent glass replacement plastic film developed as a material capable of replacing tempered glass or tempered glass. In the case of the glass replacement plastic film may be formed by imparting various functionalities to each layer in a multilayer structure.
도 1은 상기 터치 스크린 패널(100)의 개략적인 단면도이다.1 is a schematic cross-sectional view of the touch screen panel 100.
도 1에서, 상기 터치 스크린 패널(100)은, 커버 윈도우층(150); 투명 점착층(110); 플라스틱 기재층(131) 상의 일면에 도전층(132)이 형성된 전도성 플라스틱 필름층(130); 및 투명 기판(160)을 포함할 수 있다. 또한, 상기와 같은 각 층을 포함하는 터치 스크린 패널(100)은, 액정표시장치(LCD)(170) 등과 같은 표시 장치에 부착되어 있을 수 있다. In FIG. 1, the touch screen panel 100 may include a cover window layer 150; Transparent adhesive layer 110; A conductive plastic film layer 130 having a conductive layer 132 formed on one surface of the plastic substrate layer 131; And a transparent substrate 160. In addition, the touch screen panel 100 including each layer as described above may be attached to a display device such as a liquid crystal display (LCD) 170.
상기 투명 점착층(110)은 상기 점착제 조성물이 광경화되어 형성된 층으로서, 상기 광학용 점착 필름에 대한 상세한 설명은 전술한 바와 같다.The transparent adhesive layer 110 is a layer formed by photocuring the pressure-sensitive adhesive composition, the detailed description of the optical adhesive film is as described above.
상기 전도성 플라스틱 필름층(130)의 구체적인 종류는 특별히 제한되지 않고, 이 분야의 공지의 전도성 필름을 사용할 수 있다. 예를 들어, 상기 전도성 필름(130)으로, 일면에 도전층(132)으로서 ITO 전극층이 형성된 투명 플라스틱 필름일 수 있다. 구체적으로, 상기 플라스틱 기재층(131)을 형성하는 상기 투명 플라스틱 필름으로는, 폴리에틸렌테레프탈레이트 필름, 폴리테트라플로오루에틸렌 필름, 폴리에틸렌 필름, 폴리프로필렌 필름, 폴리부텐 필름, 폴리부타디엔 필름, 염화비닐 공중합체 필름, 폴리우레탄 필름, 에틸렌-비닐 아세테이트 필름, 에틸렌-프로필렌 공중합체 필름, 에틸렌-아크릴산 에틸 공중합체 필름, 에틸렌-아크릴산 메틸 공중합체 필름 또는 폴리이미드 필름 등을 사용할 수 있고, 이에 제한되지 않는다. 보다 구체적으로, 상기 플라스틱 기재층(131)은 폴리에틸렌테레프탈레이트(PET) 필름일 수 있다.The specific kind of the conductive plastic film layer 130 is not particularly limited, and a conductive film known in the art may be used. For example, the conductive film 130 may be a transparent plastic film having an ITO electrode layer formed as a conductive layer 132 on one surface thereof. Specifically, as the transparent plastic film forming the plastic base layer 131, polyethylene terephthalate film, polytetrafluoroethylene film, polyethylene film, polypropylene film, polybutene film, polybutadiene film, vinyl chloride air Copolymer film, polyurethane film, ethylene-vinyl acetate film, ethylene-propylene copolymer film, ethylene-ethyl acrylate copolymer film, ethylene-methyl acrylate copolymer film or polyimide film and the like can be used, but are not limited thereto. More specifically, the plastic base layer 131 may be a polyethylene terephthalate (PET) film.
이하 본 발명의 실시예 및 비교예를 기재한다. 그러한 하기한 실시예는 본 발명의 일 실시예일뿐 본 발명이 하기한 실시예에 한정되는 것은 아니다.Hereinafter, examples and comparative examples of the present invention are described. Such following examples are only examples of the present invention, and the present invention is not limited to the following examples.
(실시예)(Example)
실시예 1Example 1
에틸헥실아크릴레이트 88 중량부, 히드록시프로필아크릴레이트 10 중량부 및 N-비닐 피롤리돈 2 중량부를 1 리터 유리 반응기에 넣고 열중합시켜 점도 35cP의 광경화성 아크릴계 공중합 수지 시럽을 얻었다. 상기 광경화성 아크릴계 공중합 수지 시럽에 대하여 측정된 수산가 계산값는 41 mg KOH/g이다. 얻어진 광경화성 아크릴계 공중합 수지 100 중량부 (고형분 기준)에 대해 광개시제로서 a,a-메톡시-a-히드록시아세토페논 (Igacure 651, Ciba社) 0.5 중량부, 가교제로서 1,6-헥산디올디아크릴레이트 (HDDA) 0.35 중량부를 혼합한 후 충분히 교반하여 점착제 조성물을 제조하였다. 이어서, 상기 점착제 조성물을 100㎛ 두께로 성막하여 광경화하여 경화 필름으로서 광학용 점착 필름을 제조하였다.88 parts by weight of ethylhexyl acrylate, 10 parts by weight of hydroxypropyl acrylate and 2 parts by weight of N-vinyl pyrrolidone were placed in a 1 liter glass reactor and thermally polymerized to obtain a photocurable acrylic copolymer resin syrup having a viscosity of 35 cP. The calculated hydroxyl value of the photocurable acrylic copolymer resin syrup is 41 mg KOH / g. 0.5 weight part of a, a-methoxy-a-hydroxyacetophenone (Igacure 651, Ciba) as a photoinitiator, and 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin. 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition. Subsequently, the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 μm and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
실시예 2Example 2
에틸헥실아크릴레이트 85 중량부 중량부, 히드록시프로필아크릴레이트 10 중량부 및 N-비닐 피롤리돈 5 중량부를 사용하여 광경화성 아크릴계 공중합 수지를 제조하여 사용한 점을 제외하고 실시예 1에서와 동일한 방법으로 광학용 점착 필름을 제조하였다. 상기 제조된 광경화성 아크릴계 공중합 수지의 수산가는 41mg KOH/g이다.The same method as in Example 1 except that 85 parts by weight of ethylhexyl acrylate, 10 parts by weight of hydroxypropyl acrylate, and 5 parts by weight of N-vinyl pyrrolidone were prepared and used. An optical pressure-sensitive adhesive film was prepared. The hydroxyl value of the photocurable acrylic copolymer resin prepared above is 41 mg KOH / g.
실시예 3Example 3
에틸헥실아크릴레이트 78 중량부, 이소보닐 (메타)아크릴레이트 10 중량부, 히드록시프로필아크릴레이트 10 중량부 및 N-비닐 피롤리돈 2 중량부를 1 리터 유리 반응기에 넣고 열중합시켜 점도 35cP의 광경화성 아크릴계 공중합 수지 시럽을 얻었다. 상기 광경화성 아크릴계 공중합 수지 시럽에 대하여 측정된 수산가 계산값는 41 mg KOH/g이다. 얻어진 광경화성 아크릴계 공중합 수지 100 중량부 (고형분 기준)에 대해 광개시제로서 a,a-메톡시-a-히드록시아세토페논 (Igacure 651, Ciba社) 0.5 중량부, 가교제로서 1,6-헥산디올디아크릴레이트 (HDDA) 0.35 중량부를 혼합한 후 충분히 교반하여 점착제 조성물을 제조하였다. 이어서, 상기 점착제 조성물을 100㎛ 두께로 성막하여 광경화하여 경화 필름으로서 광학용 점착 필름을 제조하였다.78 parts by weight of ethylhexyl acrylate, 10 parts by weight of isobornyl (meth) acrylate, 10 parts by weight of hydroxypropyl acrylate and 2 parts by weight of N-vinyl pyrrolidone were put into a 1 liter glass reactor and thermally polymerized to give a viscosity of 35 cP. A chemical conversion acrylic syrup was obtained. The calculated hydroxyl value of the photocurable acrylic copolymer resin syrup is 41 mg KOH / g. 0.5 weight part of a, a-methoxy-a-hydroxyacetophenone (Igacure 651, Ciba) as a photoinitiator, and 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin. 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition. Subsequently, the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 μm and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
실시예 4Example 4
에틸헥실아크릴레이트 78 중량부, 시클로헥실 (메타)아크릴레이트 10 중량부, 히드록시프로필아크릴레이트 10 중량부 및 N-비닐 피롤리돈 2 중량부를 1 리터 유리 반응기에 넣고 열중합시켜 점도 35cP의 광경화성 아크릴계 공중합 수지 시럽을 얻었다. 상기 광경화성 아크릴계 공중합 수지 시럽에 대하여 측정된 수산가 계산값는 41 mg KOH/g이다. 얻어진 광경화성 아크릴계 공중합 수지 100 중량부 (고형분 기준)에 대해 광개시제로서 a,a-메톡시-a-히드록시아세토페논 (Igacure 651, Ciba社) 0.5 중량부, 가교제로서 1,6-헥산디올디아크릴레이트 (HDDA) 0.35 중량부를 혼합한 후 충분히 교반하여 점착제 조성물을 제조하였다. 이어서, 상기 점착제 조성물을 100㎛ 두께로 성막하여 광경화하여 경화 필름으로서 광학용 점착 필름을 제조하였다.78 parts by weight of ethylhexyl acrylate, 10 parts by weight of cyclohexyl (meth) acrylate, 10 parts by weight of hydroxypropyl acrylate and 2 parts by weight of N-vinyl pyrrolidone were put into a 1 liter glass reactor and thermally polymerized to give a viscosity of 35 cP. A chemical conversion acrylic syrup was obtained. The calculated hydroxyl value of the photocurable acrylic copolymer resin syrup is 41 mg KOH / g. 0.5 weight part of a, a-methoxy-a-hydroxyacetophenone (Igacure 651, Ciba) as a photoinitiator, and 1,6-hexanedioldi as a crosslinking agent with respect to 100 weight part (solid content basis) of the obtained photocurable acrylic copolymer resin. 0.35 parts by weight of acrylate (HDDA) was mixed and then sufficiently stirred to prepare a pressure-sensitive adhesive composition. Subsequently, the pressure-sensitive adhesive composition was formed into a film with a thickness of 100 μm and photocured to prepare an optical pressure-sensitive adhesive film as a cured film.
비교예 1Comparative Example 1
에틸헥실아크릴레이트 90 중량부 중량부 및 히드록시프로필아크릴레이트 10 중량부를 사용하여 광경화성 아크릴계 공중합 수지를 제조하여 사용한 점을 제외하고 실시예 1에서와 동일한 방법으로 광학용 점착 필름을 제조하였다. 상기 제조된 광경화성 아크릴계 공중합 수지의 수산가는 41mg KOH/g이다.An optical pressure-sensitive adhesive film was manufactured in the same manner as in Example 1 except that 90 parts by weight of ethylhexyl acrylate and 10 parts by weight of hydroxypropyl acrylate were used to prepare a photocurable acrylic copolymer resin. The hydroxyl value of the photocurable acrylic copolymer resin prepared above is 41 mg KOH / g.
비교예 2Comparative Example 2
에틸헥실아크릴레이트 85 중량부 중량부 및 히드록시프로필아크릴레이트 15 중량부를 사용하여 광경화성 아크릴계 공중합 수지를 제조하여 사용한 점을 제외하고 실시예 1에서와 동일한 방법으로 광학용 점착 필름을 제조하였다. 상기 제조된 광경화성 아크릴계 공중합 수지의 수산가는 62mg KOH/g이다.An optical pressure-sensitive adhesive film was prepared in the same manner as in Example 1 except that 85 parts by weight of ethylhexyl acrylate and 15 parts by weight of hydroxypropyl acrylate were used to prepare a photocurable acrylic copolymer resin. The hydroxyl value of the photocurable acrylic copolymer resin prepared above is 62 mg KOH / g.
평가evaluation
실험예 1: 유전율 평가Experimental Example 1: Evaluation of permittivity
하기 기기와 하기 조건에 따라 상기 실시예 1-4 및 비교예 1-2에서 제조된 광학용 점착 필름의 양면에 전극을 접촉시킨 후 유전 상수 k값을 측정하여 하기 표 1에 기재하였다.The dielectric constant k was measured by contacting electrodes on both sides of the optical adhesive films prepared in Examples 1-4 and Comparative Examples 1-2, and the dielectric constant k was measured according to the following conditions and shown in Table 1 below.
기기: Agilent Technologies E4980A LCR meterInstrument: Agilent Technologies E4980A LCR meter
테스트 주파수(Test Frequencies): 20 Hz - 2 MHzTest Frequencies: 20 Hz-2 MHz
전극 직경(Electrode diameter): 5mmElectrode diameter: 5 mm
실험예 2: 백탁 현상 평가Experimental Example 2: Evaluation of cloudiness
상기 실시예 1-4 및 비교예 1-2에서 제조된 광학용 점착 필름을 사용하여 유리/접착 필름/유리의 적층 구조를 제작한 후 항온항습기 (85℃/85%RH) 에 3일간 방치 후 육안으로 백탁 여부 확인하여 평가 결과를 하기 표 1에 기재하였다. After the laminated structure of the glass / adhesive film / glass using the optical adhesive film prepared in Example 1-4 and Comparative Example 1-2 and left for 3 days in a thermo-hygrostat (85 ℃ / 85% RH) Visually check whether the cloudiness is shown in Table 1 below the evaluation results.
표 1
유전율(@100kHz) 백탁여부
실시예 1 2.89 X
실시예 2 2.75 X
실시예 3 2.79 X
실시예 4 2.83 X
비교예 1 2.96 O
비교예 2 3.09 X
Table 1
Dielectric constant (@ 100 kHz) Clouding
Example 1 2.89 X
Example 2 2.75 X
Example 3 2.79 X
Example 4 2.83 X
Comparative Example 1 2.96 O
Comparative Example 2 3.09 X
상기 표 1에서 볼 수 있듯이, 비교예 1-2의 점착 필름 대비하여 실시예 1-4는 백탁이 발생하지 않았고, 3.0 이하의 저 유전율을 구현했음을 확인하였다. As can be seen in Table 1, in comparison with the adhesive film of Comparative Example 1-2, Example 1-4 did not cause turbidity, it was confirmed that a low dielectric constant of 3.0 or less.
이상에서 본 발명의 바람직한 실시예들에 대하여 상세하게 설명하였지만 본 발명의 권리 범위는 이에 한정되는 것은 아니고 다음의 청구 범위에서 정의하고 있는 본 발명의 기본 개념을 이용한 당업자의 여러 변형 및 개량 형태 또한 본 발명의 권리 범위에 속하는 것이다.Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of the invention.
<부호의 설명><Description of the code>
100: 터치 스크린 패널100: touch screen panel
110: 투명 점착층110: transparent adhesive layer
131: 플라스틱 기재층131: plastic base layer
132: 도전층132: conductive layer
130: 전도성 플라스틱 필름층130: conductive plastic film layer
150: 커버 윈도우층150: cover window layer
160: 투명 기판160: transparent substrate
170: 액정표시 장치(LCD)170: liquid crystal display (LCD)

Claims (18)

  1. (메타)아크릴산 에스테르계 모노머 및 저유전성 모노머의 광경화성 아크릴계 공중합 수지를 포함하고, 상기 저유전성 모노머는 히드록시기 함유 모노머 및 N 함유 모노머로 이루어지고, 상기 히드록시기 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 5 내지 15 중량%인 점착제 조성물.A (meth) acrylic acid ester monomer and a low dielectric monomer, a photocurable acrylic copolymer resin, wherein the low dielectric monomer comprises a hydroxy group-containing monomer and an N-containing monomer, and the hydroxy group-containing monomer constitutes the photocurable acrylic copolymer resin. Pressure-sensitive adhesive composition of 5 to 15% by weight of the total monomers.
  2. 제1항에 있어서,The method of claim 1,
    상기 N 함유 모노머는 상기 광경화성 아크릴계 공중합 수지를 구성하는 총 모노머 중 0.1 내지 10 중량%인 The N-containing monomer is 0.1 to 10% by weight of the total monomer constituting the photocurable acrylic copolymer resin
    점착제 조성물.Pressure-sensitive adhesive composition.
  3. 제1항에 있어서,The method of claim 1,
    수산가가 25 내지 70 mg KOH/g인 Fisheries value is 25 to 70 mg KOH / g
    점착제 조성물.Pressure-sensitive adhesive composition.
  4. 제1항에 있어서,The method of claim 1,
    상기 히드록시기 함유 모노머는 2-히드록시에틸 (메타)아크릴레이트, 2-히드록시프로필 (메타)아크릴레이트, 4-히드록시부틸 (메타)아크릴레이트, 6-히드록시헥실 (메타)아크릴레이트, 8-히드록시옥틸 (메타)아크릴레이트, 2-히드록시에틸렌글리콜 (메타)아크릴레이트, 2-히드록시프로필렌글리콜 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는The hydroxy group-containing monomer is 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 8 At least one selected from the group consisting of hydroxyoctyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acrylate, 2-hydroxypropylene glycol (meth) acrylate, and combinations thereof
    점착제 조성물.Pressure-sensitive adhesive composition.
  5. 제1항에 있어서,The method of claim 1,
    상기 N 함유 모노머는 이중결합 및 N 함유 관능기를 포함하는 화합물인The N-containing monomer is a compound containing a double bond and an N-containing functional group
    점착제 조성물.Pressure-sensitive adhesive composition.
  6. 제5항에 있어서,The method of claim 5,
    상기 N 함유 관능기는 1차아민기, 2차아민기, 이민기, 아미노기 또는 피리딘기인The N-containing functional group is a primary amine group, secondary amine group, imine group, amino group or pyridine group
    점착제 조성물.Pressure-sensitive adhesive composition.
  7. 제1항에 있어서,The method of claim 1,
    상기 N 함유 모노머는 (메타)아크릴아미드, N-비닐 피롤리돈, N-비닐 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나인The N-containing monomer is one selected from the group consisting of (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam and combinations thereof
    점착제 조성물.Pressure-sensitive adhesive composition.
  8. 제1항에 있어서,The method of claim 1,
    상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트, 히드록시기 함유 모노머 및 N 함유 모노머의 4원 공중합체인The photocurable acrylic copolymer resin is a quaternary copolymer of linear or branched C1-C14 alkyl acrylate, C6-C20 alicyclic condensed ring or fused ring-containing acrylate, hydroxy group-containing monomer and N-containing monomer.
    점착제 조성물.Pressure-sensitive adhesive composition.
  9. 제8항에 있어서,The method of claim 8,
    상기 선형 또는 분지형 C1-C14 알킬 아크릴레이트는 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, n-프로필 (메타)아크릴레이트, 이소프로필 (메타)아크릴레이트, n-부틸 (메타)아크릴레이트, t-부틸 (메타)아크릴레이트, sec-부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 2-에틸헥실 (메타)아크릴레이트, 2-에틸부틸 (메타)아크릴레이트, n-옥틸(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 이소노닐 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는The linear or branched C1-C14 alkyl acrylates are methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylic Late, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (Meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, and combinations thereof
    점착제 조성물.Pressure-sensitive adhesive composition.
  10. 제8항에 있어서,The method of claim 8,
    상기 C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트는 이소보닐 (메타)아크릴레이트, 시클로헥실 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는The C6-C20 alicyclic condensed ring or fused ring-containing acrylate includes one selected from the group consisting of isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, and combinations thereof
    점착제 조성물.Pressure-sensitive adhesive composition.
  11. 제1항에 있어서,The method of claim 1,
    상기 광경화성 아크릴계 공중합 수지는 선형 또는 분지형 C1-C14 알킬 아크릴레이트 30 내지 60 중량%, C6-C20 지환족 축합고리 또는 융합고리 함유 아크릴레이트 30 내지 50 중량%, 히드록시기 함유 모노머 5 내지 20 중량% 및 N 함유 모노머의 4원 공중합체 1 내지 10 중량%로 구성된 모노머의 공중합체인The photocurable acrylic copolymer resin is 30 to 60% by weight of linear or branched C1-C14 alkyl acrylate, 30 to 50% by weight of C6-C20 alicyclic condensed or fused ring-containing acrylate, 5 to 20% by weight of hydroxy group-containing monomer And it is a copolymer of the monomer consisting of 1 to 10% by weight of the quaternary copolymer of N-containing monomer
    점착제 조성물.Pressure-sensitive adhesive composition.
  12. 제1항에 있어서,The method of claim 1,
    광개시제를 더 포함하는Further comprising a photoinitiator
    점착제 조성물.Pressure-sensitive adhesive composition.
  13. 제12항에 있어서,The method of claim 12,
    상기 광개시제는 벤조인계 개시제, 히드록시 케톤계 개시제, 아미노 케톤계 개시제 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는The photoinitiator comprises one selected from the group consisting of a benzoin-based initiator, a hydroxy ketone-based initiator, an amino ketone-based initiator caprolactam, and combinations thereof
    점착제 조성물.Pressure-sensitive adhesive composition.
  14. 제1항 내지 제13항 중 어느 한 항에 따른 점착제 조성물의 광경화물을 포함하는 점착제층을 포함하는 광학용 점착 필름.The optical adhesive film containing the adhesive layer containing the photocured material of the adhesive composition of any one of Claims 1-13.
  15. 제14항에 있어서,The method of claim 14,
    주파수 100kHz에서 측정된 유전 상수 k 값이 3.0 이하인Dielectric constant k measured at frequency 100 kHz is 3.0 or less
    광학용 점착 필름.Optical adhesive film.
  16. 일면에 도전층이 형성된 전도성 플라스틱 필름층;A conductive plastic film layer having a conductive layer formed on one surface thereof;
    상기 도전층 상부에 제14항에 따른 광학용 점착 필름이 적층되어 형성된 투명 점착층; 및A transparent adhesive layer formed by laminating an optical adhesive film according to claim 14 on the conductive layer; And
    상기 광학용 점착 필름의 상부에 적층된 커버 윈도우층Cover window layer laminated on the optical adhesive film
    을 포함하는 터치 스크린 패널.Touch screen panel comprising a.
  17. 제16항에 있어서,The method of claim 16,
    상기 전도성 플라스틱 필름층이 도전성 금속 산화물층이 일면에 형성된 폴리에틸렌테레프탈레이트 필름인The conductive plastic film layer is a polyethylene terephthalate film formed on one surface of the conductive metal oxide layer
    터치 스크린 패널.Touch screen panel.
  18. 제16항에 있어서,The method of claim 16,
    상기 커버 윈도우층은 투명한 유리 대체 플라스틱 필름 또는 강화 유리인The cover window layer is a transparent glass replacement plastic film or tempered glass
    터치 스크린 패널.Touch screen panel.
PCT/KR2015/009724 2014-09-17 2015-09-16 Adhesive composition, optical adhesive film and touch screen panel WO2016043521A1 (en)

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KR102446328B1 (en) * 2016-09-21 2022-09-21 동우 화인켐 주식회사 Adhesive Composition and Adhesive Sheet Using the Same
JP2022553681A (en) * 2019-10-16 2022-12-26 コザ・ノベル・マテリアルズ・コリア・カンパニー・リミテッド Curable composition

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