TWI668283B - Adhesive composition for touch screen panel, optical adhesive film and touch screen panel - Google Patents

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

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TWI668283B
TWI668283B TW104130579A TW104130579A TWI668283B TW I668283 B TWI668283 B TW I668283B TW 104130579 A TW104130579 A TW 104130579A TW 104130579 A TW104130579 A TW 104130579A TW I668283 B TWI668283 B TW I668283B
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meth
acrylate
group
binder composition
bifunctional
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TW104130579A
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TW201612276A (en
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金源鎬
李席
尹燦午
金章淳
朴恩敬
鄭富基
金民政
金相還
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南韓商Ｌｇ化學股份有限公司
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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
    • 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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

本發明提供一種粘結劑組合物，上述粘結劑組合物包含(甲基)丙烯酸酯((meth)acrylic acid ester)類光固化樹脂及未含氧雙官能二烯類橡膠固化劑。 The present invention provides a binder composition comprising a (meth)acrylic acid ester-based photocurable resin and a non-oxygenated difunctional diene-based rubber curing agent.

Description

觸控螢幕面板用粘結劑組合物、光學用粘結膜及觸控螢幕面板 Binder composition for touch screen panel, optical adhesive film and touch screen panel

本發明提供一種觸控螢幕面板用粘結劑組合物、光學用粘結膜及觸控螢幕面板。 The invention provides an adhesive composition for a touch screen panel, an optical adhesive film and a touch screen panel.

近來，掌上電腦(PDA)、行動通訊終端或車輛用導航儀等的電子設備形成大市場。對於這種電子設備，追求的技術目標主要可例舉薄型化、輕量化、低耗電化、高解析度化及高亮度化等。 Recently, electronic devices such as PDAs, mobile communication terminals, or navigators for vehicles have formed a large market. In the electronic device, the technical goals to be pursued are mainly thinning, light weight, low power consumption, high resolution, and high brightness.

另一方面，在輸入操作部設置有觸控螢幕或觸控面板開關的電子設備為了輕量化及防止裂痕等，使用透明導電性塑膠膜。作為其例，有將聚對苯二甲酸乙二醇酯(PET，polyethylene terephthalate)膜作為基材且一面形成有氧化銦錫(ITO，Indium Tin Oxide)等的導電層的薄膜，上述薄膜通過粘結劑層層疊於導電性玻璃、加固材料或裝飾膜等。 On the other hand, an electronic device in which an input operation unit is provided with a touch screen or a touch panel switch uses a transparent conductive plastic film for weight reduction and crack prevention. As an example, there is a film in which a polyethylene terephthalate (PET) film is used as a substrate and a conductive layer such as indium tin oxide (ITO) is formed on one surface, and the film is adhered. The coupon layer is laminated on a conductive glass, a reinforcing material, a decorative film, or the like.

上述粘結劑層需要觸控敏感度、耐久性等的多種物性。 The above adhesive layer requires various physical properties such as touch sensitivity and durability.

本發明的一實施例提供對觸控的敏感度優良，並具有優良的可靠性的粘結劑組合物。 An embodiment of the present invention provides an adhesive composition which is excellent in touch sensitivity and has excellent reliability.

本發明的再一實施例提供從上述粘結劑組合物所製備的光 學用粘結膜。 Still another embodiment of the present invention provides light prepared from the above binder composition Learn to use adhesive film.

本發明的另一實施例提供適用從上述觸控螢幕面板用粘結劑組合物所製備的光學用粘結膜的觸控螢幕面板。 Another embodiment of the present invention provides a touch screen panel to which an optical adhesive film prepared from the above-described adhesive composition for a touch screen panel is applied.

在本發明的一實施例中，提供粘結劑組合物，上述粘結劑組合物包含(甲基)丙烯酸酯類光固化樹脂及未含氧雙官能二烯類橡膠固化劑 In an embodiment of the present invention, there is provided a binder composition comprising a (meth) acrylate photocurable resin and an oxygen-free bifunctional diene rubber curing agent.

在上述未含氧雙官能二烯類橡膠固化劑的兩末端可具有二烯類雙官能團。 The divalent bifunctional group may be present at both ends of the above oxygen-free difunctional diene-based rubber curing agent.

例如，上述未含氧雙官能二烯類橡膠固化劑可包含選自由雙官能聚丁二烯(polybutadiene)、雙官能異戊二烯(isoprene)橡膠、雙官能異丁烯-異戊二烯(isobutylene-isoprene)橡膠、雙官能苯乙烯-丁烯(styrene-butylene)橡膠等或它們的組合組成的群組中的一種。 For example, the above oxygen-free difunctional diene-based rubber curing agent may comprise a material selected from the group consisting of a bifunctional polybutadiene, a bifunctional isoprene rubber, and a bifunctional isobutylene-isoprene (isobutylene- Isoprene) A rubber, bifunctional styrene-butylene rubber, or the like, or a combination thereof.

上述未含氧雙官能二烯類橡膠固化劑的重均分子量可以為3000至20000。 The above non-oxygenated bifunctional diene rubber curing agent may have a weight average molecular weight of 3,000 to 20,000.

上述未含氧雙官能二烯類橡膠固化劑的在100kHz的頻率條件下測定的介電常數k值可以為2.1至2.5。 The dielectric constant k value measured by the above oxygen-free bifunctional diene rubber curing agent at a frequency of 100 kHz may be 2.1 to 2.5.

本發明可包含100重量份的上述(甲基)丙烯酸酯類光固化樹脂及0.1至2重量份的上述未含氧雙官能二烯類橡膠固化劑。 The present invention may comprise 100 parts by weight of the above (meth) acrylate-based photocurable resin and 0.1 to 2 parts by weight of the above-mentioned non-oxygenated difunctional diene-based rubber curing agent.

上述(甲基)丙烯酸酯類光固化樹脂可以為與包含(甲基)丙烯酸酯單體以及選自由含羥基(hydroxyl group)單體、含羧基(carboxyl group)單體或含氮單體及它們的組合組成的群組中的至少一種的交聯單體一同進行共聚合的樹脂。 The above (meth) acrylate-based photocurable resin may be and contain a (meth) acrylate monomer and be selected from a hydroxyl group monomer, a carboxyl group monomer or a nitrogen-containing monomer and A resin in which at least one of the crosslinking monomers in the group consisting of a combination is copolymerized.

上述(甲基)丙烯酸酯單體可以為烷基丙烯酸甲酯(alkyl (meth)acrylate)，上述烷基丙烯酸甲酯的烷基(alkyl)可以為直鏈或支鏈型C1-C14烷基。 The above (meth) acrylate monomer may be an alkyl (meth) acrylate, and the alkyl group of the above alkyl methacrylate may be a linear or branched C1-C14 alkyl group.

上述(甲基)丙烯酸酯單體可包含選自由(甲基)丙烯酸甲酯(methyl(meth)acrylate)、(甲基)丙烯酸乙酯(ethyl(meth)acrylate)、(甲基)丙烯酸正丙酯(n-propyl(meth)acrylate)、(甲基)丙烯酸異丙酯(isopropyl(meth)acrylate)、(甲基)丙烯酸正丁酯(n-butyl(meth)acrylate)、(甲基)丙烯酸叔丁酯(t-butyl(meth)acrylate)、(甲基)丙烯酸仲丁酯(sec-butyl(meth)acrylate)、(甲基)丙烯酸戊酯(pentyl(meth)acrylate)、(甲基)丙烯酸2-乙基己酯(2-ethylhexyl(meth)acrylate)、(甲基)丙烯酸2-乙基丁酯(2-ethylbutyl(meth)acrylate)、甲基丙烯酸正辛酯(n-octyl(meth)acrylate)、(甲基)丙烯酸異辛酯(isooctyl(meth)acrylate)、(甲基)丙烯酸異冰片酯(isobornyl(meth)acrylate)、(甲基)丙烯酸異壬酯(isononyl(meth)acrylate)及它們的組合組成的群組中的一種。 The above (meth) acrylate monomer may comprise a solvent selected from the group consisting of methyl (meth) acrylate, ethyl (meth) acrylate, and (meth) acrylate. N-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, (meth)acrylic acid T-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl(meth)acrylate, (methyl) 2-ethylhexyl (meth)acrylate, 2-ethylbutyl(meth)acrylate, n-octyl methacrylate (meth) Acrylate), isooctyl(meth)acrylate, isobornyl(meth)acrylate,isononyl(meth)acrylate And one of a group consisting of them.

上述交聯單體可包含選自由2-(甲基)丙烯酸羥乙酯(2-hydroxyethyl(meth)acrylate)、2-(甲基)丙烯酸羥丙酯(2-hydroxypropyl(meth)acrylate)、4-(甲基)丙烯酸羥丁酯(4-hydroxybutyl(meth)acrylate)、6-(甲基)丙烯酸羥己酯(6-hydroxyhexyl(meth)acrylate)、8-(甲基)丙烯酸羥辛酯(8-hydroxyoctyl(meth)acrylate)、2-(甲基)丙烯酸羥基乙二醇酯(2-hydroxyethylene glycol(meth)acrylate)、2-(甲基)丙烯酸羥基丙二醇酯(2-hydroxypropylene glycol(meth)acrylate)、丙烯酸(acrylic acid)、甲基丙烯酸(methacrylic acid)、2-(甲基)丙烯醯氧基乙酸(2-(meth) acryloyloxy acetic acid)、3-(甲基)丙烯醯氧基丙基酸(3-(meth)acryloyloxy propyl acid)、4-(甲基)丙烯醯氧基丁酸(4-(meth)acryloyloxy butyric acid)、丙烯酸二聚體、衣康酸(itaconic acid)、馬來酸(maleic acid)、2-(甲基)丙烯酸異氰基乙酯(2-isocyanatoethyl(meth)acrylate)、3-(甲基)丙烯酸異氰基丙酯(3-isocyanatopropyl(meth)acrylate)、4-(甲基)丙烯酸異氰基丁酯(4-isocyanatobutyl(meth)acrylate)、(甲基)丙烯醯胺((meth)acrylamide)、N-乙烯基吡咯烷酮(N-vinylpyrrolidone)、N-乙烯基己內醯胺(N-vinylcaprolactam)及它們的組合組成的群組中的一種。 The crosslinking monomer may comprise a solvent selected from the group consisting of 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4 4-hydroxybutyl(meth)acrylate, 6-hydroxyhexyl(meth)acrylate, hydroxyoctyl 8-(meth)acrylate 8-hydroxyoctyl(meth)acrylate), 2-hydroxyethylene glycol (meth)acrylate, 2-hydroxypropylene glycol (meth) Acrylate),acrylic acid, methacrylic acid, 2-(meth)acryloxyacetic acid (2-(meth) Acrylyloxy acetic acid), 3-(meth)acryloyloxy propyl acid, 4-(meth)acryloyloxy butyric acid ), acrylic acid dimer, itaconic acid, maleic acid, 2-isocyanatoethyl (meth)acrylate, 3-(methyl ) 3-isocyanatopropyl (meth) acrylate, 4-isocyanatobutyl (meth) acrylate, (meth) acrylamide (meth) One of the group consisting of acrylamide), N-vinylpyrrolidone, N-vinylcaprolactam, and combinations thereof.

上述粘結劑組合物還可包含光引發劑。 The above binder composition may further comprise a photoinitiator.

上述光引發劑可包含選自由安息香(benzoin)類引發劑、羥基酮(hydroxy ketone)類引發劑、氨基酮(amino ketone)類引發劑、己內醯胺(caprolactam)及它們的組合組成的群組中的一種。 The photoinitiator may comprise a group selected from the group consisting of a benzoin-based initiator, a hydroxyketone-based initiator, an aminoketone-based initiator, caprolactam, and combinations thereof. One of the groups.

在本發明的再一實施例中，提供光學用粘結膜，上述光學用粘結膜包括粘結劑層，上述粘結劑層包含上述粘結劑組合物的光固化物。 In still another embodiment of the present invention, there is provided an adhesive film for optics, wherein the optical adhesive film comprises an adhesive layer, and the adhesive layer comprises a photocured material of the adhesive composition.

在本發明的另一實施例中，提供觸控螢幕面板，上述觸控螢幕面板包括：導電性塑膠膜層，一面形成有導電層；上述光學用粘結膜，層疊於上述導電層的上部；以及蓋窗口層，層疊於上述光學用粘結膜的上部。 In another embodiment of the present invention, a touch screen panel is provided, the touch screen panel includes: a conductive plastic film layer on one side of which a conductive layer is formed; and the optical adhesive film is laminated on an upper portion of the conductive layer; The cover window layer is laminated on the upper portion of the above-mentioned optical adhesive film.

上述導電性塑膠膜可以為一面形成有導電性金屬氧化物層的聚對苯二甲酸乙二醇酯(polyethylene terephthalate)膜。 The conductive plastic film may be a polyethylene terephthalate film in which a conductive metal oxide layer is formed on one surface.

上述蓋窗口可以為代替透明玻璃的塑膠膜或鋼化玻璃。 The cover window may be a plastic film or tempered glass instead of transparent glass.

從上述粘結劑組合物製備的光學用粘結膜對觸控的敏感度 非常良好，並具有良好的可靠性。 Sensitivity of optical adhesive film prepared from the above adhesive composition to touch Very good and has good reliability.

100‧‧‧觸控螢幕面板 100‧‧‧ touch screen panel

110‧‧‧光學用粘結膜 110‧‧‧Optical adhesive film

131‧‧‧塑膠基材層 131‧‧‧Plastic substrate layer

132‧‧‧導電層 132‧‧‧ Conductive layer

130‧‧‧導電性塑膠膜層 130‧‧‧ Conductive plastic film

150‧‧‧蓋窗口層 150‧‧‧cover window layer

160‧‧‧透明基板 160‧‧‧Transparent substrate

170‧‧‧液晶顯示裝置(LCD) 170‧‧‧Liquid Crystal Display Unit (LCD)

第1圖為本發明一實施例之觸控螢幕面板剖面示意圖。 FIG. 1 is a schematic cross-sectional view of a touch screen panel according to an embodiment of the invention.

以下，對本發明的實施例進行詳細的說明。但這只是作為例示而提出的，本發明並不侷限於此，本發明僅根據後述的申請專利範圍的範疇而定義。 Hereinafter, embodiments of the invention will be described in detail. However, this is only an exemplification, and the present invention is not limited thereto, and the present invention is defined only in accordance with the scope of the patent application scope described later.

本發明提供粘結劑組合物，上述粘結劑組合物包含(甲基)丙烯酸酯類光固化樹脂及未含氧雙官能二烯類橡膠固化劑。 The present invention provides a binder composition comprising a (meth) acrylate photocurable resin and a non-oxygenated bifunctional diene rubber curing agent.

當製備手機、平板電腦等的顯示裝置的觸控螢幕面板時，可從上述粘結劑組合物製備使用為用於接合一面形成有導電層的導電性塑膠膜層和蓋窗口層的結合介質的光學用粘結膜。 When preparing a touch screen panel of a display device such as a mobile phone or a tablet computer, a bonding medium used for bonding a conductive plastic film layer and a cover window layer on which a conductive layer is formed may be prepared from the above binder composition. Optical adhesive film.

上述粘結劑組合物使上述(甲基)丙烯酸酯類光固化樹脂光固化來形成為光學用粘結膜，上述光學用粘結膜以光學上透明的方式形成，可適用於觸控螢幕面板，並且，具有低的介電常數。像這樣，具有低的介電常數的光學用粘結膜對觸控的敏感度增大，藉以有用地適用在觸控螢幕面板。 The binder composition is photocured by the (meth)acrylate-based photocurable resin to form an optical adhesive film, and the optical adhesive film is optically transparent, and is applicable to a touch panel. Has a low dielectric constant. As such, the optical adhesive film having a low dielectric constant increases sensitivity to touch, and is thus usefully applied to a touch panel.

在上述粘結劑組合物中，未含氧雙官能二烯類橡膠固化劑作為具有低的介電常數的物質，幫助上述光學用粘結膜實現低的介電常數。 In the above binder composition, the non-oxygen-containing difunctional diene-based rubber curing agent as a substance having a low dielectric constant contributes to achieving a low dielectric constant of the above-mentioned optical adhesive film.

上述未含氧雙官能二烯類橡膠固化劑具有低的介電常數，且由於是雙官能，因而當固化時，可作用為上述(甲基)丙烯酸酯類光固化 樹脂之間交聯劑。 The above non-oxygenated bifunctional diene rubber curing agent has a low dielectric constant and, since it is bifunctional, acts as a (meth) acrylate photocurable when cured. Crosslinking between resins.

具體地，在上述未含氧雙官能二烯類橡膠固化劑的兩末端可具有二烯類雙官能團。 Specifically, a diene bifunctional group may be present at both ends of the above-mentioned non-oxygenated bifunctional diene rubber curing agent.

由於上述未含氧雙官能二烯類橡膠固化劑不含有電負性高的氧，因而作為非極性，可實現低的介電常數。 Since the above oxygen-free bifunctional diene-based rubber curing agent does not contain oxygen having high electronegativity, a low dielectric constant can be achieved as non-polarity.

如上所述，由於上述未含氧雙官能二烯類橡膠固化劑具有雙官能，因而可執行交聯作用，但是，不可以為三官能以上的多官能。即，由於上述未含氧雙官能二烯類橡膠固化劑為雙官能，因而與上述(甲基)丙烯酸酯類光固化樹脂一同組合而適合製備粘結膜。這是因為(甲基)丙烯酸酯類光固化樹脂固化之後，具有一定程度的硬度，若上述固化劑使用三官能以上的多官能化合物，則由於交聯部位變長，因而由此製備的粘結膜過度堅硬，因而不適合作為粘結膜。 As described above, since the above-mentioned oxygen-free bifunctional diene-based rubber curing agent has a bifunctional function, cross-linking action can be performed, but it is not trifunctional or higher. That is, since the above-mentioned oxygen-free bifunctional diene rubber curing agent is bifunctional, it is preferably combined with the above (meth)acrylate photocurable resin to prepare an adhesive film. This is because the (meth) acrylate-based photocurable resin has a certain degree of hardness after curing, and when the above-mentioned curing agent uses a trifunctional or higher polyfunctional compound, the cross-linked portion becomes long, and thus the adhesive film thus prepared is prepared. It is too hard and therefore not suitable as an adhesive film.

因此，上述未含氧雙官能二烯類橡膠固化劑除了兩末端的二烯類官能團之外，可不包含其他官能團。 Therefore, the above-mentioned oxygen-free bifunctional diene-based rubber curing agent may not contain other functional groups except for the diene functional groups at both terminals.

上述未含氧雙官能二烯類橡膠固化劑的重均分子量可以為約3000至約20000。即，作為上述未含氧雙官能二烯類橡膠固化劑的上述重均分子量水準的二烯類橡膠化合物，可以為樹脂或低聚物形態。具有上述範圍的重均分子量的未含氧雙官能二烯類橡膠固化劑可適當作用為固化劑。 The above non-oxygenated bifunctional diene rubber curing agent may have a weight average molecular weight of from about 3,000 to about 20,000. In other words, the diene rubber compound having the above-mentioned weight average molecular weight level as the above-mentioned oxygen-free bifunctional diene rubber curing agent may be in the form of a resin or an oligomer. The non-oxygenated bifunctional diene rubber curing agent having a weight average molecular weight in the above range may suitably function as a curing agent.

上述未含氧雙官能二烯類橡膠固化劑的在100kHz的頻率條件下測定的介電常數k值可以為約2.1至約2.5。 The dielectric constant k value measured at a frequency of 100 kHz of the above oxygen-free bifunctional diene rubber curing agent may be from about 2.1 to about 2.5.

上述未含氧雙官能二烯類橡膠固化劑可包含雙官能聚丁二 烯、雙官能異戊二烯橡膠、雙官能異丁烯-異戊二烯橡膠、雙官能苯乙烯-丁烯橡膠等或它們的組合。 The above non-oxygenated bifunctional diene rubber curing agent may comprise a bifunctional polybutadiene An alkene, a bifunctional isoprene rubber, a bifunctional isobutylene-isoprene rubber, a bifunctional styrene-butene rubber, or the like, or a combination thereof.

像這樣，上述觸控螢幕面板用粘結劑組合物可通過包含上述未含氧雙官能二烯類橡膠固化劑，來以具有低的介電常數的方式製備，具體地，以使在100kHz的頻率條件下測定的介電常數k值成為3.0以下的方式製備。從具有低的介電常數的觸控螢幕面板用粘結劑組合物製備的光學用粘結膜的觸控敏感度優秀。 As such, the above-described binder composition for a touch screen panel can be prepared by having the above-mentioned oxygen-free bifunctional diene-based rubber curing agent in a manner having a low dielectric constant, specifically, at 100 kHz. It was prepared in such a manner that the dielectric constant k value measured under the frequency condition was 3.0 or less. The optical adhesive film prepared from the adhesive composition for a touch panel panel having a low dielectric constant is excellent in touch sensitivity.

上述粘結劑組合物可包含約100重量份的上述(甲基)丙烯酸酯類光固化樹脂及約0.1至約2重量份的上述未含氧雙官能二烯類橡膠固化劑。 The above binder composition may comprise about 100 parts by weight of the above (meth) acrylate-based photocurable resin and from about 0.1 to about 2 parts by weight of the above-mentioned non-oxygenated difunctional diene-based rubber curing agent.

上述(甲基)丙烯酸酯類光固化樹脂可以為與包含(甲基)丙烯酸酯單體以及選自由含羥基單體、含羧基單體或含氮單體及它們的組合組成的群組中的至少一種的交聯單體一同進行共聚合的樹脂。 The above (meth) acrylate-based photocurable resin may be in a group consisting of a (meth) acrylate monomer and a group selected from a hydroxyl group-containing monomer, a carboxyl group-containing monomer or a nitrogen-containing monomer, and a combination thereof. A resin in which at least one crosslinking monomer is copolymerized together.

具體地，上述(甲基)丙烯酸酯單體可以為烷基丙烯酸甲酯，上述烷基丙烯酸甲酯的烷基可以為直鏈或支鏈型C1-C14烷基。 Specifically, the (meth) acrylate monomer may be alkyl methacrylate, and the alkyl group of the above alkyl acrylate may be a linear or branched C1-C14 alkyl group.

上述(甲基)丙烯酸酯單體可以為(甲基)丙烯酸甲酯(methyl(meth)acrylate)、(甲基)丙烯酸乙酯(ethyl(meth)acrylate)、(甲基)丙烯酸正丙酯(n-propyl(meth)acrylate)、(甲基)丙烯酸異丙酯(isopropyl(meth)acrylate)、(甲基)丙烯酸正丁酯(n-butyl(meth)acrylate)、(甲基)丙烯酸叔丁酯(t-butyl(meth)acrylate)、(甲基)丙烯酸仲丁酯(sec-butyl(meth)acrylate)、(甲基)丙烯酸戊酯(pentyl(meth)acrylate)、(甲基)丙烯酸2-乙基己酯(2-ethylhexyl(meth)acrylate)、(甲基)丙烯酸2-乙基丁 酯(2-ethylbutyl(meth)acrylate)、甲基丙烯酸正辛酯(n-octyl(meth)acrylate)、(甲基)丙烯酸異辛酯(isooctyl(meth)acrylate)、(甲基)丙烯酸異冰片酯(isobornyl(meth)acrylate)、(甲基)丙烯酸異壬酯(isononyl(meth)acrylate)等，或可包含它們的組合。 The above (meth) acrylate monomer may be methyl (meth) acrylate, ethyl (meth) acrylate, or n-propyl (meth) acrylate ( N-propyl(meth)acrylate), isopropyl (meth)acrylate, n-butyl(meth)acrylate, tert-butyl (meth)acrylate T-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl(meth)acrylate, (meth)acrylic acid 2 2-ethylhexyl(meth)acrylate, 2-ethylbutyl (meth)acrylate 2-ethylbutyl(meth)acrylate, n-octyl(meth)acrylate, isooctyl(meth)acrylate,isobornyl (meth)acrylate Isobornyl (meth)acrylate, isodonyl (meth)acrylate, and the like, or a combination thereof.

上述交聯單體是指不僅在分子結構內包含共聚性官能團(例如，碳-碳雙鍵)，還包含功能性官能團的單體。 The above crosslinking monomer means a monomer which contains not only a copolymerizable functional group (for example, a carbon-carbon double bond) but also a functional functional group in a molecular structure.

例如，上述交聯單體可包含選自由含羥基單體、含羧基單體或含氮單體及它們的組合組成的群組中的一種，並不限於此。 For example, the above crosslinking monomer may include one selected from the group consisting of a hydroxyl group-containing monomer, a carboxyl group-containing monomer, or a nitrogen-containing monomer, and a combination thereof, and is not limited thereto.

具體地，上述交聯單體可以為2-(甲基)丙烯酸羥乙酯、2-(甲基)丙烯酸羥丙酯、4-(甲基)丙烯酸羥丁酯、6-(甲基)丙烯酸羥己酯、8-(甲基)丙烯酸羥辛酯、2-(甲基)丙烯酸羥基乙二醇酯、2-(甲基)丙烯酸羥基丙二醇酯等之類的含羥基單體、丙烯酸、甲基丙烯酸、2-(甲基)丙烯醯氧基乙酸、3-(甲基)丙烯醯氧基丙基酸、4-(甲基)丙烯醯氧基丁酸、丙烯酸二聚體、衣康酸、馬來酸等之類的含羧基單體、2-(甲基)丙烯酸異氰基乙酯、3-(甲基)丙烯酸異氰基丙酯、4-(甲基)丙烯酸異氰基丁酯、(甲基)丙烯醯胺、N-乙烯基吡咯烷酮、N-乙烯基己內醯胺等之類的含氮單體等，可包含由它們的組合組成的群組中的一種。 Specifically, the crosslinking monomer may be hydroxyethyl 2-(meth)acrylate, hydroxypropyl 2-(meth)acrylate, hydroxybutyl 4-(meth)acrylate, 6-(meth)acrylic acid. a hydroxyl group-containing monomer such as hydroxyhexyl ester, hydroxyoctyl 8-(meth)acrylate, hydroxyethylene glycol 2-(meth)acrylate, hydroxypropyl propylene glycol 2-(meth)acrylate, etc. Acrylic acid, 2-(meth)acryloxyacetic acid, 3-(meth)acryloxypropyl acid, 4-(meth)acryloxybutyric acid, acrylic acid dimer, itaconic acid a carboxyl group-containing monomer such as maleic acid, isocyanoethyl 2-(meth)acrylate, isocyanopropyl 3-(meth)acrylate, or isocyanato 4-(meth)acrylate The nitrogen-containing monomer such as an ester, (meth) acrylamide, N-vinyl pyrrolidone, N-vinyl caprolactam or the like may include one selected from the group consisting of them.

上述粘結劑組合物為了通過光固化型組合物調節聚合度，還可包含光引發劑。以100重量份的上述(甲基)丙烯酸酯類光固化樹脂為基準，可使用含量為約0.01至約10重量份的上述光引發劑，作為上述光引發劑的種類，只要可通過光照射產生自由基來引發聚合反應，就不受特別的限制，例如，上述光引發劑可包含選自由安息香類引發劑、羥基酮類引發劑、 氨基酮類引發劑、己內醯胺及它們的組合組成的群組中的一種。 The above binder composition may further contain a photoinitiator in order to adjust the degree of polymerization by the photocurable composition. The photoinitiator may be used in an amount of from about 0.01 to about 10 parts by weight based on 100 parts by weight of the above (meth)acrylate-based photocurable resin, as long as it can be produced by light irradiation. The radical is used to initiate the polymerization reaction, and is not particularly limited. For example, the photoinitiator may include a benzoin-based initiator, a hydroxyketone-based initiator, One of a group consisting of an aminoketone initiator, caprolactam, and a combination thereof.

並且，上述粘結劑組合物在不影響發明的效果的範圍內，還可包含選自由環氧(epoxy)樹脂、交聯劑、紫外線穩定劑、抗氧化劑、調色劑、加固劑、填充劑、消泡劑、表面活性劑、增塑劑及它們的組合組成的群組中的一種以上的添加劑。 Further, the above binder composition may further comprise, from the range of not impairing the effects of the invention, an epoxy resin, a crosslinking agent, a UV stabilizer, an antioxidant, a toner, a reinforcing agent, and a filler. One or more additives in the group consisting of an antifoaming agent, a surfactant, a plasticizer, and a combination thereof.

在本發明的另一實施例中，提供光學用粘結膜，上述光學用粘結膜包含上述粘結劑組合物的光固化物。 In another embodiment of the present invention, an adhesive film for optics is provided, and the optical adhesive film comprises a photocured product of the above binder composition.

將上述觸控螢幕面板用粘結劑組合物塗敷於基材層上後，通過光照射來進行光固化，藉以製備光學用粘結膜。“光照射”是指影響光引發劑或聚合性化合物，來可引發聚合反應的電磁波的照射，在上述內容中，電磁波以微波、紅外線、紫外線、X線及γ線、α-粒子束、質子束(proton beam)、中子束(neutron beam)及電子束(electron beam)等的粒子束的總稱使用。 After the binder composition for a touch panel is applied onto a substrate layer, it is photocured by light irradiation to prepare an optical adhesive film. "Light irradiation" refers to irradiation of electromagnetic waves that affect a photoinitiator or a polymerizable compound to initiate polymerization. In the above, electromagnetic waves are microwave, infrared, ultraviolet, X-ray and gamma rays, α-particle beams, and protons. A general term for a particle beam such as a proton beam, a neutron beam, and an electron beam.

使上述粘結劑組合物光固化來製備上述光學用粘結膜的方法沒有特別限制。例如，可通過用刮棒塗布機等的公知的單元將在上述的上述粘結劑組合物或其中添加溶劑來製備的塗敷液塗敷於適當的程序基材並固化的方法，來製備上述光學用粘結膜。 The method of preparing the above-mentioned optical adhesive film by photocuring the above binder composition is not particularly limited. For example, the above-mentioned binder composition or a coating liquid prepared by adding a solvent thereto may be applied to a suitable program substrate and cured by a known unit such as a bar coater. Optical adhesive film.

充分去除包含於粘結劑組合物或塗敷液內部的揮發成分或反應殘渣等的氣泡引發成分後，執行上述固化過程，藉以適當地賦予上述固化物的交聯密度或分子量、彈性率等，進而防止在高溫狀態下，存在於粘結介面的氣泡變大，在內部形成散亂體的問題等。 After the bubble-initiating component of the volatile component or the reaction residue contained in the binder composition or the coating liquid is sufficiently removed, the curing process is performed, whereby the crosslinking density, molecular weight, modulus of elasticity, and the like of the cured product are appropriately imparted. Further, in the high temperature state, the bubble existing in the bonding interface is increased, and the problem of the disordered body is formed inside.

並且，上述粘結劑組合物或固化其塗敷液的方法沒有特別限 制，例如，可經過在通過上述粘結劑組合物或其塗敷液而形成的塗敷層照射紫外線或在規定條件下時效處理(aging)的步驟，來執行固化步驟。 Further, the above binder composition or a method of curing the coating liquid thereof is not particularly limited. For example, the curing step can be carried out by a step of irradiating ultraviolet rays or aging under prescribed conditions through a coating layer formed by the above binder composition or a coating liquid thereof.

例如，上述光固化可由紫外線照射來執行。 For example, the above photocuring can be performed by ultraviolet irradiation.

用於執行上述光固化的紫外線照射可由通常使用的金屬鹵化物燈(Metal halide lamp)執行約10秒鐘至約15秒鐘。 The ultraviolet irradiation for performing the above photocuring can be performed by a commonly used metal halide lamp for about 10 seconds to about 15 seconds.

照射上述紫外線的光量優選為約0.5J/cm2至約2.0J/cm2，更優選為約1.0J/cm2至約1.5J/cm2。 The amount of light irradiated with the above ultraviolet rays is preferably from about 0.5 J/cm 2 to about 2.0 J/cm 2 , more preferably from about 1.0 J/cm 2 to about 1.5 J/cm 2 .

上述光學用粘結膜的厚度可以為約50μm至約300μm，具體地，上述光學用粘結膜的厚度可以為約100μm至約200μm。以使上述光學用粘結膜具有上述範圍的厚度的方式，不僅實現可適用於薄型的觸控面板或觸控螢幕，還可達成耐久性優秀的粘結膜。 The above-mentioned optical adhesive film may have a thickness of from about 50 μm to about 300 μm. Specifically, the above-mentioned optical adhesive film may have a thickness of from about 100 μm to about 200 μm. In order to make the optical adhesive film have a thickness in the above range, it is possible to achieve an adhesive film excellent in durability, not only for a thin touch panel or a touch screen but also for a durable touch panel.

在本發明的另一實施例中，提供觸控螢幕面板，上述觸控螢幕面板包括：導電性塑膠膜層，一面形成有導電層；上述光學用粘結膜，層疊於上述導電層的上部；以及蓋窗口層，層疊於上述光學用粘結膜的上部。 In another embodiment of the present invention, a touch screen panel is provided, the touch screen panel includes: a conductive plastic film layer on one side of which a conductive layer is formed; and the optical adhesive film is laminated on an upper portion of the conductive layer; The cover window layer is laminated on the upper portion of the above-mentioned optical adhesive film.

上述蓋窗口層可使用鋼化玻璃或作為可代替鋼化玻璃的原材料而開發的代替透明玻璃的塑膠膜。在上述代替透明玻璃的塑膠膜的情況下，能夠以多層結構向各層賦予多種功能性來形成。 The cover window layer may be made of tempered glass or a plastic film instead of transparent glass which is developed as a substitute for the tempered glass. In the case of the above-described plastic film instead of the transparent glass, it is possible to form a plurality of functionalities in each layer in a multilayer structure.

第1圖為上述觸控螢幕面板100的剖面示意圖。 FIG. 1 is a schematic cross-sectional view of the touch screen panel 100.

在第1圖中，上述觸控螢幕面板100可包括：蓋窗口層150；光學用粘結膜110；導電性塑膠膜層130，在塑膠基材層131上的一面形成有導電層132；以及透明基板160。並且，包括如上所述的各層的觸控螢幕面 板100可附著於如液晶顯示裝置(LCD)170等的顯示裝置。 In the first embodiment, the touch screen panel 100 may include: a cover window layer 150; an optical adhesive film 110; a conductive plastic film layer 130; a conductive layer 132 formed on one surface of the plastic substrate layer 131; Substrate 160. And, including the touch screen surface of each layer as described above The board 100 can be attached to a display device such as a liquid crystal display device (LCD) 170 or the like.

上述光學用粘結膜110作為上述粘結劑組合物光固化而成的層，上述光學用粘結膜110的詳細說明如上所述。 The optical adhesive film 110 is a layer which is photocured by the above-described adhesive composition, and the optical adhesive film 110 is described in detail as described above.

上述導電性塑膠膜層130的具體種類沒有特別限制，可使用該領域的公知的導電膜。例如，上述導電性塑膠膜層130可以為在一面作為導電層132形成有氧化銦錫電極層的透明塑膠膜。具體地，形成上述塑膠基材層131的上述透明塑膠膜可使用聚對苯二甲酸乙二醇酯膜、聚四氟乙烯(polytetrafluoroethylene)膜、聚乙烯(polyethylene)膜、聚丙烯(polypropylene)膜、聚丁烯(polybutene)膜、聚丁二烯(polybutadiene)膜、氯乙烯共聚物(vinyl chloride copolymer)膜、聚氨酯(polyurethane)膜、乙烯-醋酸乙烯酯(ethylene-vinyl acetate)膜、乙烯-丙烯(ethylene-propylene)共聚物膜、乙烯-丙烯酸乙酯(ethylene-acrylic acid ethyl)共聚物膜、乙烯-丙烯酸甲酯(ethylene-acrylic acid methyl)共聚物膜或聚醯亞胺(polyimide)膜等，但並不限於此。更具體地，上述塑膠基材層131可以為聚對苯二甲酸乙二醇酯膜。 The specific type of the conductive plastic film layer 130 is not particularly limited, and a known conductive film in the field can be used. For example, the conductive plastic film layer 130 may be a transparent plastic film in which an indium tin oxide electrode layer is formed as a conductive layer 132 on one surface. Specifically, the transparent plastic film forming the plastic substrate layer 131 may be a polyethylene terephthalate film, a polytetrafluoroethylene film, a polyethylene film, or a polypropylene film. , polybutene film, polybutadiene film, vinyl chloride copolymer film, polyurethane film, ethylene-vinyl acetate film, ethylene- An ethylene-propylene copolymer film, an ethylene-acrylic acid ethyl copolymer film, an ethylene-acrylic acid methyl copolymer film or a polyimide film Etc., but not limited to this. More specifically, the plastic substrate layer 131 may be a polyethylene terephthalate film.

以下，提出本發明的多個具體實施例。但以下所記載的多個實施例僅用於具體例示或說明本發明，本發明不應受其限制。 Hereinafter, various specific embodiments of the present invention are proposed. However, the various embodiments described below are only intended to illustrate or illustrate the invention, and the invention should not be limited thereto.

實施例1 Example 1

將85重量份的丙烯酸乙基己酯(ethylhexyl acrylate)及15重量份的作為交聯單體的丙烯酸羥丙酯(hydroxypropyl acrylate)放入1升的玻璃反應器，並進行熱聚合來得到粘度為35cP的光固化型丙烯酸類共聚合樹脂糖漿。相對於上述光固化型丙烯酸類共聚合樹脂糖漿測定的羥值計算值 為62mgKOH/g。相對於得到的100重量份(以固體成分為基準)的光固化型丙烯酸類共聚合樹脂，混合0.5重量份的雙官能丁二烯橡膠固化劑，混合0.5重量份的a，a-甲氧基-a-羥基苯乙酮(a，a-methoxy-a-hydroxyacetophenone)(豔佳固(Igacure)651，汽巴(Ciba)公司)作為光引發劑，並混合0.35重量份的1，6-己二醇二丙烯酸酯(HDDA，1，6-hexanediol diacrylate)作為交聯劑後，充分攪拌來製備了粘結劑組合物。接著，以100μm的厚度將上述粘結劑組合物進行成膜來光固化，藉以用固化膜製備光學用粘結膜。 85 parts by weight of ethylhexyl acrylate and 15 parts by weight of hydroxypropyl acrylate as a crosslinking monomer were placed in a 1 liter glass reactor and thermally polymerized to obtain a viscosity of 35cP photocurable acrylic copolymer resin syrup. Calculated hydroxyl value relative to the above photocurable acrylic copolymer resin syrup It is 62 mgKOH/g. 0.5 parts by weight of a bifunctional butadiene rubber curing agent was mixed with respect to 100 parts by weight (based on solid content) of the photocurable acrylic copolymer resin, and 0.5 parts by weight of a, a-methoxy group was mixed. -a-methoxy-a-hydroxyacetophenone (Igacure 651, Ciba) as a photoinitiator and mixing 0.35 parts by weight of 1,6-hexan After the diol diacrylate (HDDA, 1,6-hexanediol diacrylate) was used as a crosslinking agent, the binder composition was prepared by thorough stirring. Next, the above binder composition was formed into a film at a thickness of 100 μm to be photocured, whereby an optical adhesive film was prepared using a cured film.

實施例2 Example 2

以與實施例1相同的方法製備了光固化型丙烯酸類共聚合樹脂糖漿，並相對於100重量份的所得到的光固化型丙烯酸類共聚合樹脂，使用2.0重量份的雙官能丁二烯橡膠固化劑，除此之外，以與實施例1相同的方法製備了光學用粘結膜。 A photocurable acrylic copolymer resin syrup was prepared in the same manner as in Example 1, and 2.0 parts by weight of a bifunctional butadiene rubber was used with respect to 100 parts by weight of the obtained photocurable acrylic copolymer resin. An adhesive film for optics was prepared in the same manner as in Example 1 except for the curing agent.

比較例1 Comparative example 1

以與實施例1相同的方法製備了光固化型丙烯酸類共聚合樹脂糖漿，並相對於100重量份的所得到的光固化型丙烯酸類共聚合樹脂，代替雙官能丁二烯橡膠固化劑，使用0.5重量份的雙官能氨基甲酸乙酯(urethane)固化劑，除此之外，以與實施例1相同的方法製備了光學用粘結膜。 A photocurable acrylic copolymer resin syrup was prepared in the same manner as in Example 1 and used in place of the difunctional butadiene rubber curing agent in 100 parts by weight of the obtained photocurable acrylic copolymer resin. An optical adhesive film was prepared in the same manner as in Example 1 except that 0.5 part by weight of a bifunctional urethane curing agent was used.

比較例2 Comparative example 2

以與實施例1相同的方法製備了光固化型丙烯酸類共聚合樹脂糖漿，並相對於100重量份的所得到的光固化型丙烯酸類共聚合樹脂，代替雙官能丁二烯橡膠固化劑，使用2.0重量份的雙官能氨基甲酸乙酯固化 劑，除此之外，以與實施例1相同的方法製備了光學用粘結膜。 A photocurable acrylic copolymer resin syrup was prepared in the same manner as in Example 1 and used in place of the difunctional butadiene rubber curing agent in 100 parts by weight of the obtained photocurable acrylic copolymer resin. 2.0 parts by weight of bifunctional urethane cured An adhesive film for optics was prepared in the same manner as in Example 1 except for the above.

評價 Evaluation

實驗例1：介電常數評價 Experimental Example 1: Evaluation of Dielectric Constant

根據以下設備和以下條件，使電極與在上述實施例1-實施例2及比較例1-比較例2中製備的光學用粘結膜的兩面相接觸之後，測定了介電常數k值，並記載於下列表1中。 The dielectric constant k value was measured after the electrodes were brought into contact with both surfaces of the optical adhesive films prepared in the above-mentioned Example 1 - Example 2 and Comparative Example 1 - Comparative Example 2 according to the following equipment and the following conditions, and recorded. In the following list 1.

設備：安捷倫科技(AgilentTechnologies)E4980ALCR測試儀 Equipment: Agilent Technologies E4980ALCR Tester

測試頻率(Test Frequencies)：20Hz-2MHz Test Frequencies: 20Hz-2MHz

電極直徑(Electrode diameter)：5mm Electrode diameter: 5mm

實驗例2 Experimental example 2

使用在上述實施例1-實施例2及比較例1-比較例2中製備的光學用粘結膜來製備玻璃/粘結膜/玻璃的層疊結構後，在恆溫恆濕機(85℃/85%RH)中放置3天，之後，用肉眼確認是否產生氣泡現象。 The optical adhesive film prepared in the above Example 1 - Example 2 and Comparative Example 1 - Comparative Example 2 was used to prepare a laminated structure of glass/adhesive film/glass, and then in a constant temperature and humidity machine (85 ° C / 85% RH) After being placed for 3 days, it was confirmed with the naked eye whether or not bubbles were generated.

實驗例3 Experimental example 3

使用在上述實施例1-實施例2及比較例1-比較例2中製備的光學用粘結膜來製備玻璃/粘結膜/玻璃的層疊結構後，以(-40℃、1小時/80℃、1小時)為1週期，進行30週期後，用肉眼確認是否產生氣泡，並在下列表1中記載。 The optical adhesive film prepared in the above Example 1 - Example 2 and Comparative Example 1 - Comparative Example 2 was used to prepare a laminated structure of glass/adhesive film/glass, and (-40 ° C, 1 hour / 80 ° C, One hour) was performed for one cycle, and after 30 cycles, it was confirmed with the naked eye whether or not bubbles were generated, and is described in Table 1 below.

表1 Table 1

如上述表1所示，可以確認到比較例1中產生了氣泡，比較例2中的介電常數相對高，但實施例1-實施例2中未產生氣泡，如此表示優良的可靠性，並達成低的介電常數。 As shown in the above Table 1, it was confirmed that bubbles were generated in Comparative Example 1, and the dielectric constant in Comparative Example 2 was relatively high, but no bubbles were generated in Example 1 - Example 2, indicating excellent reliability, and A low dielectric constant is achieved.

以上，詳細說明了本發明的較佳實施例，但本發明的發明要求保護範圍並不侷限於此，利用在以下申請專利範圍中定義的本發明的基本概念由本發明所屬技術領域的普通技術人員進行的各種變形及改良方式也屬於本發明的申請專利保護範圍。 The preferred embodiments of the present invention have been described above in detail, but the scope of the invention is not limited thereto, and the basic concepts of the present invention defined in the following claims are to be Various modifications and improvements made are also within the scope of the patent application of the present invention.

Claims (12)

一種粘結劑組合物，其包括：100重量份的(甲基)丙烯酸酯((meth)acrylic acid ester)類光固化樹脂及0.5至2重量份的未含氧雙官能二烯類橡膠固化劑，其中上述未含氧雙官能二烯類橡膠固化劑的兩末端具有二烯類雙官能團，上述未含氧雙官能二烯類橡膠固化劑包含選自由雙官能聚丁二烯(polybutadiene)、雙官能異戊二烯(isoprene)橡膠、雙官能異丁烯-異戊二烯(isobutylene-isoprene)橡膠及它們的組合組成的群組中的一種，以及上述未含氧雙官能二烯類橡膠固化劑的重均分子量為3000至20000。 A binder composition comprising: 100 parts by weight of a (meth)acrylic acid ester-based photocurable resin and 0.5 to 2 parts by weight of an oxygen-free difunctional diene-based rubber curing agent Wherein the above-mentioned non-oxygenated bifunctional diene rubber curing agent has a diene bifunctional group at both ends, and the above oxygen-free bifunctional diene rubber curing agent comprises a polybutadiene selected from the group consisting of One of a group consisting of a functional isoprene rubber, a bifunctional isobutylene-isoprene rubber, and a combination thereof, and the above-mentioned oxygen-free bifunctional diene rubber curing agent The weight average molecular weight is from 3,000 to 20,000. 如申請專利範圍第1項所述之粘結劑組合物，其中，上述未含氧雙官能二烯類橡膠固化劑在100kHz頻率條件下測定的介電常數k值為2.1至2.5。 The binder composition according to claim 1, wherein the non-oxygenated bifunctional diene rubber curing agent has a dielectric constant k of 2.1 to 2.5 as measured at a frequency of 100 kHz. 如申請專利範圍第1項所述之粘結劑組合物，其中，上述(甲基)丙烯酸酯類光固化樹脂為與包含(甲基)丙烯酸酯單體以及選自由含羥基(hydroxyl group)單體、含羧基(carboxyl group)單體或含氮單體及它們的組合組成的群組中的至少一種的交聯單體一同進行共聚合的樹脂。 The binder composition according to claim 1, wherein the (meth) acrylate photocurable resin is a monomer comprising (meth) acrylate and is selected from a hydroxyl group. A resin in which a crosslinking monomer of at least one of a group consisting of a body, a carboxyl group monomer, or a nitrogen-containing monomer and a combination thereof is copolymerized together. 如申請專利範圍第3項所述之粘結劑組合物，其中，上述(甲基)丙烯酸酯單體為烷基丙烯酸甲酯(alkyl(meth)acrylate)，上述烷基丙烯酸甲酯的烷基(alkyl)為直鏈或支鏈型C1-C14烷基。 The binder composition according to claim 3, wherein the (meth) acrylate monomer is alkyl (meth) acrylate, and the alkyl group of the above alkyl methacrylate (alkyl) is a linear or branched C1-C14 alkyl group. 如申請專利範圍第3項所述之粘結劑組合物，其中，上述(甲基)丙烯酸酯單體包含選自由(甲基)丙烯酸甲酯(methyl(meth)acrylate)、(甲基)丙烯酸乙酯(ethyl(meth)acrylate)、(甲基)丙烯酸正丙酯(n-propyl(meth)acrylate)、(甲基)丙烯酸異丙酯(isopropyl(meth)acrylate)、(甲 基)丙烯酸正丁酯(n-butyl(meth)acrylate)、(甲基)丙烯酸叔丁酯(t-butyl(meth)acrylate)、(甲基)丙烯酸仲丁酯(sec-butyl(meth)acrylate)、(甲基)丙烯酸戊酯(pentyl(meth)acrylate)、(甲基)丙烯酸2-乙基己酯(2-ethylhexyl(meth)acrylate)、(甲基)丙烯酸2-乙基丁酯(2-ethylbutyl(meth)acrylate)、甲基丙烯酸正辛酯(n-octyl(meth)acrylate)、(甲基)丙烯酸異辛酯(isooctyl(meth)acrylate)、(甲基)丙烯酸異冰片酯(isobornyl(meth)acrylate)、(甲基)丙烯酸異壬酯(isononyl(meth)acrylate)及它們的組合組成的群組中的一種。 The binder composition according to claim 3, wherein the (meth) acrylate monomer comprises a group selected from the group consisting of methyl (meth) acrylate and (meth) acrylate. Ethyl (ethyl) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, (a) N-butyl(meth)acrylate, t-butyl(meth)acrylate,sec-butyl(meth)acrylate ), pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate ( 2-ethylbutyl(meth)acrylate), n-octyl(meth)acrylate, isooctyl(meth)acrylate,isobornyl (meth)acrylate One of the group consisting of isobornyl (meth)acrylate, isodonyl (meth)acrylate, and combinations thereof. 如申請專利範圍第3項所述之粘結劑組合物，其中，上述交聯單體包含選自由2-(甲基)丙烯酸羥乙酯(2-hydroxyethyl(meth)acrylate)、2-(甲基)丙烯酸羥丙酯(2-hydroxypropyl(meth)acrylate)、4-(甲基)丙烯酸羥丁酯(4-hydroxybutyl(meth)acrylate)、6-(甲基)丙烯酸羥己酯(6-hydroxyhexyl(meth)acrylate)、8-(甲基)丙烯酸羥辛酯(8-hydroxyoctyl(meth)acrylate)、2-(甲基)丙烯酸羥基乙二醇酯(2-hydroxyethylene glycol(meth)acrylate)、2-(甲基)丙烯酸羥基丙二醇酯(2-hydroxypropylene glycol(meth)acrylate)、丙烯酸(acrylic acid)、甲基丙烯酸(methacrylic acid)、2-(甲基)丙烯醯氧基乙酸(2-(meth)acryloyloxy acetic acid)、3-(甲基)丙烯醯氧基丙基酸(3-(meth)acryloyloxy propyl acid)、4-(甲基)丙烯醯氧基丁酸(4-(meth)acryloyloxy butyric acid)、丙烯酸二聚體、衣康酸(itaconic acid)、馬來酸(maleic acid)、2-(甲基)丙烯酸異氰基乙酯(2-isocyanatoethyl(meth)acrylate)、3-(甲基)丙烯酸異氰基丙酯(3-isocyanatopropyl(meth)acrylate)、4-(甲基)丙烯酸異氰基丁酯(4-isoc yanatobutyl(meth)acrylate)、(甲基)丙烯醯胺((meth)acrylamide)、N-乙烯基吡咯烷酮(N-vinylpyrrolidone)、N-乙烯基己內醯胺(N-vinylcaprolactam)及它們的組合組成的群組中的一種。 The binder composition according to claim 3, wherein the crosslinking monomer comprises a group selected from the group consisting of 2-hydroxyethyl (meth)acrylate, 2-(A) 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl(meth)acrylate, 6-hydroxyhexyl 6-hydroxyhexyl (meth)acrylate), 8-hydroxyoctyl (meth)acrylate, 2-hydroxyethylene glycol (meth)acrylate, 2 2-hydroxypropylene glycol (meth)acrylate, acrylic acid, methacrylic acid, 2-(methyl)acryloxyacetic acid (2-(meth) )acryloyloxy acetic acid), 3-(meth)acryloyloxy propyl acid, 4-(meth)acryloyloxy butyric Acid), acrylic acid dimer, itaconic acid, maleic acid, 2-isocyanatoethyl (meth)acrylate, 3-(A) Acrylic Yl ester (3-isocyanatopropyl (meth) acrylate), 4- (meth) acrylate, iso-butyl cyano (4-isoc Yanatobutyl(meth)acrylate), (meth)acrylamide, N-vinylpyrrolidone, N-vinylcaprolactam, and combinations thereof One of the groups. 如申請專利範圍第1項所述之粘結劑組合物，其中，還包含光引發劑。 The binder composition of claim 1, further comprising a photoinitiator. 如申請專利範圍第7項所述之粘結劑組合物，其中，上述光引發劑包含選自由安息香(benzoin)類引發劑、羥基酮(hydroxy ketone)類引發劑、氨基酮(amino ketone)類引發劑、己內醯胺(caprolactam)及它們的組合組成的群組中的一種。 The binder composition according to claim 7, wherein the photoinitiator comprises a benzoin-based initiator, a hydroxyketone-based initiator, and an aminoketone. One of a group consisting of an initiator, caprolactam, and combinations thereof. 一種光學用粘結膜，其包括：粘結劑層，上述粘結劑層包含申請專利範圍第1項至第8項中任一項所述的粘結劑組合物的光固化物。 An optical adhesive film comprising: an adhesive layer comprising the photocured material of the adhesive composition according to any one of claims 1 to 8. 一種觸控螢幕面板，其包括：導電性塑膠膜層，一面形成有導電層；申請專利範圍第9項所述的光學用粘結膜，層疊於上述導電層的上部；以及蓋窗口層，層疊於上述光學用粘結膜的上部。 A touch screen panel comprising: a conductive plastic film layer having a conductive layer formed on one surface; the optical adhesive film according to claim 9 laminated on an upper portion of the conductive layer; and a cover window layer laminated on The upper portion of the above-mentioned optical adhesive film. 如申請專利範圍第10項所述之觸控螢幕面板，其中，上述導電性塑膠膜層為一面形成有導電性金屬氧化物層的聚對苯二甲酸乙二醇酯(polyethylene terephthalate)膜。 The touch screen panel according to claim 10, wherein the conductive plastic film layer is a polyethylene terephthalate film having a conductive metal oxide layer formed on one surface thereof. 如申請專利範圍第10項所述之觸控螢幕面板，其中，上述蓋窗口層為代替透明玻璃的塑膠膜或鋼化玻璃。 The touch screen panel of claim 10, wherein the cover window layer is a plastic film or tempered glass instead of transparent glass.
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