TWI803703B - Adhesive sheet, display body and manufacturing method of display body - Google Patents

Adhesive sheet, display body and manufacturing method of display body Download PDF

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TWI803703B
TWI803703B TW108137422A TW108137422A TWI803703B TW I803703 B TWI803703 B TW I803703B TW 108137422 A TW108137422 A TW 108137422A TW 108137422 A TW108137422 A TW 108137422A TW I803703 B TWI803703 B TW I803703B
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adhesive
adhesive layer
mentioned
meth
display body
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TW108137422A
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TW202026379A (en
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高橋洋一
小鯖翔
藤井結加
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日商琳得科股份有限公司
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • 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
    • C09J2467/00—Presence of polyester
    • C09J2467/005—Presence of polyester in the release coating

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本發明的課題是在於提供可提升顯示體的設計性的黏著片、及提升設計性的顯示體。 本發明的解決手段係一種黏著片1，其係包括用於黏合一顯示體構成構件21與其他的顯示體構成構件22的黏著劑層11的黏著片1，黏著劑層11係由含有著色劑的活性能量線硬化性黏著劑構成，黏著劑層11的全光線穿透率為3%以上，黏著劑層11的CIE1976L*a*b*表色系所規定的明度L*為95以下。The subject of this invention is providing the adhesive sheet which can improve the design property of a display body, and the display body which improved design property. The solution of the present invention is an adhesive sheet 1 comprising an adhesive layer 11 for adhering a display constituent member 21 and other display constituent members 22. The adhesive layer 11 is composed of a coloring agent The total light transmittance of the adhesive layer 11 is more than 3%, and the lightness L* stipulated by the CIE1976L*a*b* color system of the adhesive layer 11 is 95 or less.

Description

黏著片、顯示體及顯示體的製造方法Adhesive sheet, display body and manufacturing method of display body

本發明是關於能夠用於黏合顯示體構成構件的黏著片、使用該黏著片的顯示體、及該顯示體的製造方法。The present invention relates to an adhesive sheet that can be used for bonding members constituting a display body, a display body using the adhesive sheet, and a method for manufacturing the display body.

近幾年的顯示體(顯示器)，例如汽車的儀表板(instrument panel)、汽車導航系統、設在控制台(console)的各種儀表等的車載用顯示體、一般用戶用的平板終端機等的顯示體、商業用平板終端機、數位看板(digital signage)等的顯示體、室外用數位看板等的顯示體等，大多使用液晶顯示裝置。Displays (displays) in recent years, such as car dashboards (instrument panels), car navigation systems, vehicle-mounted displays such as various instruments installed on consoles, and tablet terminals for general users, etc. Liquid crystal display devices are often used as displays, commercial tablet terminals, displays for digital signage, and displays for outdoor digital signage.

在如上所述以車載用為首的顯示體，要求在該顯示體熄燈時，與該顯示體的周邊構件，例如與框材展現出一體感，而提升設計性。為此，可考慮將顯示體著色，例如在專利文獻1~4，揭示關於顯示體著色的發明。 [先前技術文獻] [專利文獻]In the above-mentioned display body including for vehicle use, when the light of the display body is turned off, it is required to express a sense of unity with the peripheral members of the display body, for example, with a frame material, and to improve the design. For this reason, coloring of the display body can be considered, and for example, patent documents 1 to 4 disclose inventions related to coloring of the display body. [Prior Art Literature] [Patent Document]

[專利文獻1]日本特開2000-313871號公報 [專利文獻2]日本特開2009-188298號公報 [專利文獻3]日本特開2012-234028號公報 [專利文獻4]日本特開2017-57375號公報[Patent Document 1] Japanese Patent Laid-Open No. 2000-313871 [Patent Document 2] Japanese Unexamined Patent Publication No. 2009-188298 [Patent Document 3] Japanese Unexamined Patent Publication No. 2012-234028 [Patent Document 4] Japanese Patent Laid-Open No. 2017-57375

［發明所欲解決的課題］[Problem to be solved by the invention]

但是，上述專利文獻1~4所揭示的技術，由於著色的目的均不同，並不能對顯示體賦予與周邊構件的一體感，也無法使之提升設計性。However, the technologies disclosed in the above-mentioned Patent Documents 1 to 4 have different purposes of coloring, and cannot provide a sense of unity with peripheral components to the display body, nor can it improve the design.

本發明係有鑑於如上所述的緣由所完成，以提供可提升顯示體的設計性的黏著片、及提升設計性的顯示體為目標。 ［用於解決課題的手段］This invention is made|formed in view of the said reason, and aims at providing the adhesive sheet which can improve the design property of a display body, and the display body which improved design property. [Means used to solve the problem]

為達成上述目標，第1，本發明係一種黏著片，其特徵在於：該黏著片係包括用於黏合一顯示體構成構件與其他的顯示體構成構件的黏著劑層，上述黏著劑層係由含有著色劑的活性能量線硬化性黏著劑構成，上述黏著劑層的全光線穿透率為3%以上，上述黏著劑層的CIE1976L*a*b*表色系所規定的明度L*為95以下(發明1)。In order to achieve the above object, firstly, the present invention is an adhesive sheet, which is characterized in that: the adhesive sheet includes an adhesive layer for bonding a display constituent member and other display constituent members, and the adhesive layer is composed of Consisting of an active energy ray curable adhesive containing a coloring agent, the total light transmittance of the above adhesive layer is 3% or more, and the lightness L* specified by the CIE1976L*a*b* color system of the above adhesive layer is 95 The following (invention 1).

根據上述發明(發明1)，適用於顯示體時，能夠提升該顯示體的設計性(舉個例子為外觀協調性)。例如，將該顯示體熄燈時，可對該顯示體，賦予與周邊構件，例如與黑色框材的一體感，藉此，可提高外觀協調性而展現出高級感。此外，藉由具有上述全光線穿透率，能夠確保作為顯示體的視認性。According to the above-mentioned invention (invention 1), when it is applied to a display body, it is possible to improve the designability (for example, appearance coordination) of the display body. For example, when the display body is turned off, a sense of unity with peripheral members, for example, a black frame material can be given to the display body, thereby improving the coordination of the appearance and showing a sense of luxury. Moreover, visibility as a display body can be ensured by having the said total light transmittance.

在上述發明(發明1)中，上述黏著劑層的霧度(haze)值為0.01%以上且80%以下(發明2)較佳。In the above invention (Invention 1), it is preferable that the haze value of the adhesive layer is 0.01% or more and 80% or less (Invention 2).

在上述發明(發明1、2)中，上述著色劑以黑色的顏料或染料為佳(發明3)。In the above inventions (Inventions 1 and 2), the coloring agent is preferably a black pigment or dye (Invention 3).

在上述發明(發明1~3)中，使上述黏著劑中的上述著色劑的含量為X質量%，上述黏著劑層的厚度為Zμm時，滿足下述式(I)為佳(發明4)： 5≦X×Z>300‧‧‧(I)。In the above inventions (Inventions 1 to 3), it is preferable that the following formula (I) be satisfied when the content of the colorant in the adhesive is X mass % and the thickness of the adhesive layer is Z μm (Invention 4) : 5≦X×Z>300‧‧‧(I).

在上述發明(發明1~4)中，上述活性能量線硬化性黏著劑中的上述著色劑的含量，以0.01質量%以上2.0質量%以下為佳(發明5)。In the above inventions (Inventions 1 to 4), the content of the coloring agent in the active energy ray-curable adhesive is preferably 0.01% by mass or more and 2.0% by mass or less (Invention 5).

在上述發明(發明1~5)中，上述黏著劑以丙烯酸系黏著劑為佳(發明6)。In the above inventions (Inventions 1 to 5), the adhesive is preferably an acrylic adhesive (Invention 6).

在上述發明(發明1~6)中，上述黏著劑以將含有(甲基)丙烯酸酯聚合物(A)、交聯劑(B)、活性能量線硬化性成分(C)及著色劑(D)的黏著性組合物交聯者為佳(發明7)。In the above-mentioned inventions (Inventions 1 to 6), the above-mentioned adhesive agent is composed of a (meth)acrylate polymer (A), a crosslinking agent (B), an active energy ray-curable component (C), and a colorant (D ) is preferably cross-linked adhesive composition (Invention 7).

在上述發明(發明1~7)中，包括：2片剝離片；及以接於上述2片剝離片的剝離面而夾持(sandwich)在上述剝離片的上述黏著劑層(發明8)較佳(發明8)。In the above-mentioned inventions (Inventions 1 to 7), comprising: 2 release sheets; Good (Invention 8).

第2，本發明提供一種顯示體，其特徵在於：該顯示體係包括：一顯示體構成構件；其他的顯示體構成構件；將上述一顯示體構成構件與上述其他的顯示體構成構件互相黏合的硬化後黏著劑層，上述硬化後黏著劑層，係將上述黏著片(發明1~8)的上述黏著劑層，活性能量線硬化而形成的硬化後黏著劑層(發明9)。Second, the present invention provides a display body, which is characterized in that: the display system includes: a display body constituent member; other display body constituent members; The hardened adhesive layer, the above-mentioned hardened adhesive layer is a hardened adhesive layer formed by curing the above-mentioned adhesive layer of the above-mentioned adhesive sheet (Inventions 1 to 8) with active energy rays (Invention 9).

在上述發明(發明9)中，上述一顯示體構成構件及上述其他的顯示體構成構件的至少一方，至少在以上述硬化後黏著劑層黏合側的面具有段差(發明10)為佳。In the above invention (Invention 9), it is preferable that at least one of the one display constituting member and the other display constituting member has a step on at least the surface on the side bonded to the cured adhesive layer (Invention 10).

在上述發明(發明9、10)中，具有黑色框材為佳(發明11)。In the above inventions (Inventions 9 and 10), it is preferable to have a black frame material (Invention 11).

第3，本發明提供一種顯示體的製造方法，其特徵在於：製作將一顯示體構成構件與其他的顯示體構成構件，經由上述黏著片(發明1~8)的黏著劑層黏合而成的層積體，對上述層積體的上述黏著劑層照射活性能量線，使上述黏著劑層硬化作為硬化後黏著劑層(發明12)。 ［發明的效果］Third, the present invention provides a method for manufacturing a display body, characterized in that: a display body constituent member and other display body constituent members are bonded via the adhesive layer of the above-mentioned adhesive sheet (Inventions 1 to 8). In the laminate, the adhesive layer of the laminate is irradiated with active energy rays to harden the adhesive layer to form a cured adhesive layer (Invention 12). [Effect of the invention]

根據本發明的黏著片，可提升顯示體的設計性。此外，關於本發明的顯示體，可成為提升設計性者。According to the adhesive sheet of this invention, the design property of a display body can be improved. In addition, the display body of the present invention can be improved in design.

以下，說明關於本發明的實施形態。 ［黏著片］ 關於本發明的一實施形態的黏著片，包括用於黏合一顯示體構成構件與其他的顯示體構成構件的黏著劑層，較佳的是在該黏著劑層的一面或兩面層積剝離片而成。關於顯示體及顯示體構成構件將於後述。Embodiments of the present invention will be described below. [adhesive sheet] The adhesive sheet according to one embodiment of the present invention includes an adhesive layer for bonding one display constituent member to another display constituent member, and preferably a release sheet is laminated on one or both sides of the adhesive layer. become. The display body and display body constituent members will be described later.

作為關於本實施形態的黏著片的一例的具體的構成，於圖1表示。 如圖1所示，黏著片1係由2片剝離板片12a、12b，及以接於該等2片剝離片12a、12b的剝離面，被該2片剝離片12a、12b夾持的黏著劑層11所構成。再者，在本說明書中的剝離片的剝離面，係指在剝離片具有剝離性的面，並包含施以剝離處理的面及即使沒有施以剝離處理亦顯示剝離性的面。The specific structure as an example of the adhesive sheet concerning this embodiment is shown in FIG. 1. As shown in Figure 1, the adhesive sheet 1 is composed of two peeling sheets 12a, 12b, and the peeling surface connected to the two peeling sheets 12a, 12b, and is sandwiched by the two peeling sheets 12a, 12b. agent layer 11. In addition, the peeling surface of a peeling sheet in this specification means the peeling surface of a peeling sheet, and includes the peeling-processed surface and the peeling surface which does not apply peeling processing.

1. 各構件 1-1. 黏著劑層 關於本實施形態的黏著片1的黏著劑層11，係由含有著色劑的活性能量線硬化性黏著劑構成。然後，黏著劑層11的全光線穿透率(遵照JIS K7361-1：1997測定之值)為3%以上，黏著劑層11的CIE1976L*a*b*表色系所規定的明度L*為95以下。再者，在本說明書中明度L*的測定方法，係如後述的試驗例所示。1. Each component 1-1. Adhesive layer The adhesive layer 11 of the adhesive sheet 1 of the present embodiment is composed of an active energy ray-curable adhesive containing a colorant. Then, the total light transmittance (value measured in accordance with JIS K7361-1:1997) of the adhesive layer 11 is 3% or more, and the lightness L* stipulated by the CIE1976L*a*b* color system of the adhesive layer 11 is Below 95. In addition, the measuring method of lightness L* in this specification is shown in the test example mentioned later.

將滿足上述物性的黏著劑層11，適用於顯示體時，在將該顯示體熄燈時，能夠提升該顯示體的設計性(舉個例子為外觀協調性)。具體而言，可對該顯示體，賦予與周邊構件，例如與黑色框材的一體感，藉此，可提高外觀協調性而展現出高級感。此外，藉由使全光線穿透率為3%以上，能夠確保作為顯示體的視認性。When the adhesive layer 11 satisfying the above-mentioned physical properties is applied to a display body, when the display body is turned off, the designability of the display body (for example, appearance coordination) can be improved. Specifically, a sense of unity with peripheral members, for example, a black frame material can be imparted to the display body, thereby improving the coordination of the appearance and showing a sense of luxury. Moreover, the visibility as a display body can be ensured by making total light transmittance 3% or more.

作為上述周邊構件，具體而言，可舉例如以CIE1976L*a*b*表色系所規定的明度L*為23.2，色度a*為-0.5，色度b*為-1.5的汽車的儀表板(dashboard)。作為上述周邊構件的色調，以明度L*為5~95，色度a*以-40~40，色度b*以-40~40為佳，特別是以明度L*為10~80，色度a*以-30~30，色度b*以-30~30更佳，進一步以明度L*為15~70，色度以a*-20~20，色度b*以-20~20為佳。關於本實施形態的黏著片1，可良好地使用於具有上述色調的周邊構件的顯示體。As the above-mentioned peripheral components, specifically, for example, an instrument of an automobile whose lightness L* is 23.2, chromaticity a* is -0.5, and chromaticity b* is -1.5 specified by the CIE1976 L*a*b* color system. board (dashboard). As the hue of the above-mentioned peripheral components, the lightness L* is 5~95, the chroma a* is -40~40, the chroma b* is -40~40, especially the lightness L* is 10~80, the color The degree a* is -30~30, the chroma b* is -30~30, and the lightness L* is 15~70, the chroma is a*-20~20, and the chroma b* is -20~20 better. The adhesive sheet 1 of this embodiment can be used suitably for the display body of the peripheral member which has the said color tone.

從作為顯示體的視認性的觀點而言，黏著劑層11的全光線穿透率為3%以上，較佳為10%以上，特別佳的是25%以上，進一步更佳的是50%以上。全光線穿透率的上限值，並無特別限定，通常為100%以下，考慮與上述明度L*的關係，則以98%以下為佳，以95%以下特別佳，進一步以90%以下為佳。From the viewpoint of visibility as a display body, the total light transmittance of the adhesive layer 11 is 3% or more, preferably 10% or more, particularly preferably 25% or more, and more preferably 50% or more. . The upper limit of the total light transmittance is not particularly limited, and is usually below 100%. Considering the relationship with the above-mentioned lightness L*, it is preferably below 98%, especially preferably below 95%, and further below 90%. better.

此外，從以外觀協調性提升設計性的觀點而言，黏著劑層11的明度L*為95以下，較佳為92以下，特別佳的是89以下，進一步更佳的是86以下。另一方面，從以外觀協調性提升設計性及顯示體的視認性的觀點而言，該明度L*的下限值，以10以上為佳，以20以上更佳，以30以上特別佳，進一步以40以上為佳，以55以上最佳。In addition, the lightness L* of the adhesive layer 11 is 95 or less, preferably 92 or less, particularly preferably 89 or less, and more preferably 86 or less, from the viewpoint of enhancing designability with appearance coordination. On the other hand, from the viewpoint of improving the designability and the visibility of the display body with a harmonious appearance, the lower limit of the lightness L* is preferably 10 or more, more preferably 20 or more, and particularly preferably 30 or more. Further, it is better to be above 40, and most preferably to be above 55.

再者，黏著劑層11的CIE1976L*a*b*表色系所規定的色度a*，以-40以上為佳，以-30以上更佳，以-20以上特別佳，進一步以-15以上為佳，以-10以上最佳。此外，該色度a*，以40以下為佳，以30以下更佳，以20以下特別佳，進一步以15以下為佳，以10以下最佳。藉由使色度a*在上述範圍，可進一步提升特別是在車載用顯示體的設計性(特別是外觀協調性)。Furthermore, the chromaticity a* stipulated by the CIE1976L*a*b* color system of the adhesive layer 11 is preferably above -40, more preferably above -30, particularly preferably above -20, and further preferably above -15. The above is better, and -10 or more is the best. In addition, the chroma a* is preferably 40 or less, more preferably 30 or less, particularly preferably 20 or less, further preferably 15 or less, most preferably 10 or less. By setting the chromaticity a* in the above-mentioned range, it is possible to further improve the designability (particularly, the appearance coordination) of the display body for in-vehicle use.

此外，黏著劑層11的CIE1976L*a*b*表色系所規定的色度b*，以-40以上為佳，以-30以上更佳，以-20以上特別佳，進一步以-15以上為佳，以-10以上最佳。此外，該色度b*，以40以下為佳，以30以下更佳，以20以下特別佳，進一步以15以下為佳，以10以下最佳。藉由使色度b*在上述範圍，可進一步提升特別是在車載用顯示體的設計性(特別是外觀協調性)。In addition, the chromaticity b* specified by the CIE1976L*a*b* color system of the adhesive layer 11 is preferably not less than -40, more preferably not less than -30, particularly preferably not less than -20, and further preferably not less than -15. Preferably, -10 or above is the best. In addition, the chroma b* is preferably 40 or less, more preferably 30 or less, particularly preferably 20 or less, further preferably 15 or less, most preferably 10 or less. By making the chromaticity b* within the above-mentioned range, it is possible to further improve the designability (particularly, the appearance coordination) of the display body for in-vehicle use.

黏著劑層11的霧度值，通常為0%以上，黏著劑層11中的著色劑為染料時，以0.01%以上為佳，以0.05%以上更佳，以0.1%以上特別佳。此外，黏著劑層11中的著色劑為顏料時，黏著劑層11的霧度值，以0.1%以上為佳，以1%以上更佳，以6%以上特別佳，以12%以上最佳。藉由使黏著劑層11的霧度值的下限值為上述，更容易對所得到的顯示體，賦予與周邊構件(例如框材)的一體感。另一方面，黏著劑層11的霧度值，以80%以下為佳，以70%以下更佳，以60%以下特別佳，進一步以50%以下為佳，以40%以下最佳。藉由使黏著劑層11的霧度值的上限值在上述範圍中，容易使全光線穿透率落在上述範圍，此外，更容易對所得到的顯示體，賦予與周邊構件(例如框材)的一體感。再者，在本說明書中的霧度值係以JIS K7136：2000為基準所測定之值。The haze value of the adhesive layer 11 is usually 0% or more. When the coloring agent in the adhesive layer 11 is a dye, it is preferably 0.01% or more, more preferably 0.05% or more, and particularly preferably 0.1% or more. In addition, when the colorant in the adhesive layer 11 is a pigment, the haze value of the adhesive layer 11 is preferably at least 0.1%, more preferably at least 1%, particularly preferably at least 6%, and most preferably at least 12%. . By setting the lower limit of the haze value of the adhesive layer 11 as above, it becomes easier to give a sense of unity with peripheral members (for example, a frame material) to the obtained display body. On the other hand, the haze value of the adhesive layer 11 is preferably 80% or less, more preferably 70% or less, particularly preferably 60% or less, further preferably 50% or less, most preferably 40% or less. By setting the upper limit value of the haze value of the adhesive layer 11 within the above-mentioned range, it is easy to make the total light transmittance fall within the above-mentioned range, and in addition, it is easier to give peripheral members (such as frames) to the obtained display body. material) sense of unity. In addition, the haze value in this specification is the value measured based on JISK7136:2000.

再者，黏著劑層11的全光線穿透率、霧度值、明度L*、色度a*及色度b*，即使在將黏著劑層11以活性能量線的照射使之硬化而作為硬化後黏著劑層之後，亦幾乎沒有變化。Furthermore, the total light transmittance, haze value, lightness L*, chromaticity a*, and chromaticity b* of the adhesive layer 11 can be obtained even after the adhesive layer 11 is hardened by irradiation with active energy rays. After hardening the adhesive layer, there is almost no change.

上述全光線穿透率及明度L*(甚至色度a*及b*、以及霧度值)，可藉由適當地選擇構成黏著劑層11的黏著劑所含有的著色劑的種類及含量而達成。The above-mentioned total light transmittance and lightness L* (even chroma a* and b*, and haze value) can be determined by appropriately selecting the type and content of the colorant contained in the adhesive constituting the adhesive layer 11. achieved.

上述著色劑，可為顏料，亦可為染料。顏料，可為無機系顏料，亦可為有機系顏料。由所得黏著劑的耐久性(特別是耐起泡(blister)性)的觀點而言，以無機系顏料為佳。著色劑的顏色，可配合所欲展現一體感的周邊構件的顏色適當選擇，惟一般以黑、咖啡、深藍、紫色、藍色等的暗色或深色(hyperchromic)為佳，特別是以黑色為佳。The above-mentioned colorant may be a pigment or a dye. The pigment may be an inorganic pigment or an organic pigment. Inorganic pigments are preferable from the viewpoint of the durability (particularly, blister resistance) of the resulting adhesive. The color of the coloring agent can be properly selected according to the color of the surrounding components that want to show a sense of unity, but generally dark or hyperchromic colors such as black, coffee, dark blue, purple, blue, etc. are preferred, especially black good.

作為無機系顏料，可舉出例如，碳黑、鈷系色素、鐵系色素、鉻系色素、鈦系色素、釩系色素、鋯系色素、鉬系色素、釕系色素、鉑系色素、ITO(銦錫氧化物)系色素、ATO(銻錫氧化物)系色素等。Examples of inorganic pigments include carbon black, cobalt-based pigments, iron-based pigments, chromium-based pigments, titanium-based pigments, vanadium-based pigments, zirconium-based pigments, molybdenum-based pigments, ruthenium-based pigments, platinum-based pigments, ITO (Indium Tin Oxide) pigments, ATO (Antimony Tin Oxide) pigments, etc.

此外，作為有機系顏料及有機系染料，可舉出例如，銨(aminium)系色素、花青系色素、部花青素系色素、克酮酸(croconium)系色素、方酸菁(squarylium)系色素、甘菊藍(azurenium)系色素、聚次甲基(polymethine)系色素、萘醌系色素、吡喃鎓系色素、酞菁(phthalocyanine)系色素、萘酞菁系色素、萘内醯胺系色素、偶氮系色素、縮合偶氮系色素、靛藍系色素、芘酮(perinone)系色素、苝系色素、二噁嗪系色素、喹吖啶酮(quinacridone)系色素、異吲哚酮(isoindolinone)系色素、喹啉黃(quinophthalone)系色素、吡咯系色素、硫靛系色素、金屬錯合物系色素(金屬錯鹽染料)、二硫酚(dithiol)金屬錯合物系色素、吲哚酚系色素、三芳甲烷系色素、蒽醌系色素、雙噁嗪(dioxazine)系色素、萘酚系色素、次甲基偶氮(azomethine)系色素、苯並咪唑酮系色素、皮蒽酮系色素及士林(threne)系色素等。In addition, examples of organic pigments and organic dyes include ammonium-based dyes, cyanine-based dyes, merocyanidin-based dyes, croconium-based dyes, squarylium pigments, azurenium pigments, polymethine pigments, naphthoquinone pigments, pyrylium pigments, phthalocyanine pigments, naphthalocyanine pigments, naphthalenes Amine dyes, azo dyes, condensed azo dyes, indigo dyes, perinone dyes, perylene dyes, dioxazine dyes, quinacridone dyes, isoindole Ketone (isoindolinone) pigments, quinophthalone pigments, pyrrole pigments, thioindigo pigments, metal complex pigments (metal complex salt dyes), dithiol metal complex pigments , indoxyl-based pigments, triarylmethane-based pigments, anthraquinone-based pigments, dioxazine-based pigments, naphthol-based pigments, azomethine-based pigments, benzimidazolone-based pigments, leather Anthrone-based pigments, threne-based pigments, and the like.

作為黑色顏料，可舉出例如碳黑、氧化銅、四氧化三鐵、二氧化錳、苯胺黑(aniline black)、活性炭等。此外，作為黑色染料，可舉出例如，高濃度的植物性染料或偶氮系染料(azo dye)等。As a black pigment, carbon black, copper oxide, triiron tetroxide, manganese dioxide, aniline black, activated carbon, etc. are mentioned, for example. Moreover, as a black dye, a high concentration vegetable dye, an azo dye, etc. are mentioned, for example.

上述顏料或染料，為在黏著劑層11得到目標物性，可適當混合使用。The above-mentioned pigments or dyes may be mixed and used appropriately in order to obtain the target physical properties in the adhesive layer 11 .

上述著色劑之中，由容易達成上述全光線穿透率及明度L*(甚至是霧度值)，容易展現出與周邊構件的一體感的觀點而言，以碳黑、尼格辛黑(nigrosin)系黑色染料及鉻酸鹽系黑色染料為佳。再者，亦可對碳黑的表面施以既定的處理(例如親溶劑化處理)，亦可不施以。Among the above-mentioned colorants, carbon black, nigthine black ( Nigrosin) black dyes and chromate black dyes are preferred. In addition, predetermined treatment (for example, solvating treatment) may be given to the surface of carbon black, or it may not be given.

在上述黏著劑中的著色劑含量X質量%，使黏著劑層11的厚度為Zμm時，以滿足以下式(I)的值為佳。 5≦X×Z>300‧‧‧(I) 藉由使X×Z的值在上述範圍，容易達成上述全光線穿透率及明度L*(甚至是霧度值)。再者，在本說明書中的黏著劑層11的厚度，係遵照JIS K7130測定之值。When the content X mass % of the coloring agent in the above-mentioned adhesive is such that the thickness of the adhesive layer 11 is Z μm, the value satisfying the following formula (I) is preferable. 5≦X×Z>300‧‧‧(I) By setting the value of X×Z within the above-mentioned range, it is easy to achieve the above-mentioned total light transmittance and lightness L* (even a haze value). In addition, the thickness of the adhesive layer 11 in this specification is the value measured based on JISK7130.

從上述觀點而言，X×Z的下限值，以8以上為佳，特別是以10以上為佳，進一步以15以上為佳。此外，X×Z的上限值，以250以下為佳，以150以下更佳，特別是以100以下為佳，從耐起泡性的觀點而言，進一步以60以下為佳，以30以下最佳。From the above viewpoint, the lower limit of X×Z is preferably 8 or more, especially 10 or more, and further preferably 15 or more. In addition, the upper limit of X×Z is preferably not more than 250, more preferably not more than 150, particularly preferably not more than 100, further preferably not more than 60, and not more than 30 from the viewpoint of anti-foaming properties. optimal.

為使X×Z之值容易在上述範圍內，在黏著劑中的著色劑含量(X質量%)的下限值以0.01質量%以上為佳，以0.05質量%以上更佳，特別是以0.1質量%以上為佳，進一步以0.12質量%以上為佳。此外，上述著色劑含量(X質量%)，上限值以2.0質量%以下為佳，以1.0質量%以下更佳，特別是以0.5質量%以下為佳，進一步以0.2質量%以下為佳。In order for the value of X×Z to easily fall within the above range, the lower limit of the colorant content (X mass %) in the adhesive is preferably 0.01 mass % or more, more preferably 0.05 mass % or more, especially 0.1 mass % or more. It is preferably at least mass %, and more preferably at least 0.12 mass %. In addition, the upper limit of the above-mentioned colorant content (X mass %) is preferably 2.0 mass % or less, more preferably 1.0 mass % or less, particularly preferably 0.5 mass % or less, further preferably 0.2 mass % or less.

構成關於本實施形態的黏著片1的黏著劑層11的黏著劑種類，只要是有活性能量線硬化性者，並無特別限定，從黏著物性、光學特性、耐久性(特別是耐起泡性)等的觀點而言，以活性能量線硬化性的丙烯酸系黏著劑為佳。該丙烯酸系黏著劑，可以是乳膠型、溶劑型或無溶劑型的任一，亦可為交聯型或非交聯型的任一。該等之中，以活性能量線硬化性的交聯型丙烯酸系黏著劑為佳。The type of adhesive constituting the adhesive layer 11 of the adhesive sheet 1 of the present embodiment is not particularly limited as long as it has active energy ray curability. ) etc., an active energy ray-curable acrylic adhesive is preferable. The acrylic adhesive may be any of latex type, solvent type, or non-solvent type, and may be either of crosslinking type or non-crosslinking type. Among them, an active energy ray curable cross-linked acrylic adhesive is preferable.

上述黏著劑，特別是以將含有(甲基)丙烯酸酯聚合物(A)、交聯劑(B)、活性能量線硬化性成分(C)、及著色劑(D)的黏著性組合物(以下，有時稱為「黏著性組合物P」。)交聯而成者為佳。著色劑(D)，係上述著色劑。由該黏著性組合物P所得黏著劑，能夠發揮優良的光學特性、黏著力、耐久性(在高溫高濕條件下的段差追隨性．耐起泡性)等。再者，在本說明書中，所謂(甲基)丙烯酸係指丙烯酸及甲基丙烯酸兩者。其他的類似用語亦相同。此外，「聚合物」亦包含「共聚物」的概念。The above-mentioned adhesive is, in particular, an adhesive composition ( Hereinafter, it may be referred to as "adhesive composition P".) A cross-linked one is preferable. The colorant (D) is the above-mentioned colorant. The adhesive obtained from the adhesive composition P can exhibit excellent optical characteristics, adhesive force, durability (step followability under high temperature and high humidity conditions, anti-foaming property), and the like. In addition, in this specification, (meth)acryl means both acryl and methacryl. The same applies to other similar expressions. In addition, "polymer" also includes the concept of "copolymer".

(1)黏著性組合物的成分 (1-1)(甲基)丙烯酸酯聚合物(A) 在本實施形態的(甲基)丙烯酸酯聚合物(A)，作為構成該聚合物的單體單位，包含在分子內具有與交聯劑(B)反應的反應性基的含反應性基單體為佳。來自該含反應性基單體的反應性基與交聯劑(B)反應，形成交聯結構(三維網狀結構)，得到具有所期望的凝聚力(cohesive)的黏著劑。(1) Components of the adhesive composition (1-1) (meth)acrylate polymer (A) The (meth)acrylate polymer (A) of this embodiment contains, as a monomer unit constituting the polymer, a reactive group-containing unit having a reactive group that reacts with the crosslinking agent (B) in the molecule. Body is better. The reactive group derived from the reactive group-containing monomer reacts with the crosslinking agent (B) to form a crosslinked structure (three-dimensional network structure), thereby obtaining an adhesive having desired cohesive force (cohesive).

上述含反應性基單體，可列舉：在分子內具有羥基的單體(含羥基單體)、在分子內具有羧基的單體(含羧基單體)、在分子內具有胺基的單體(含胺基單體)等為佳。該等之中，以與交聯劑(B)的反應性優良的含羥基單體以及含羧基單體為佳，對被黏附體的不良影響少的含羥基單體特別佳。The above-mentioned reactive group-containing monomers include: monomers having a hydroxyl group in the molecule (hydroxyl-containing monomers), monomers having a carboxyl group in the molecule (carboxyl-containing monomers), monomers having an amino group in the molecule (Amino-containing monomers) etc. are preferred. Among these, hydroxyl group-containing monomers and carboxyl group-containing monomers excellent in reactivity with the crosslinking agent (B) are preferable, and hydroxyl group-containing monomers having little adverse effect on an adherend are particularly preferable.

含羥基單體，可舉例如(甲基)丙烯酸2-羥基乙酯、(甲基)丙烯酸2-羥基丙酯、(甲基)丙烯酸3-羥基丙酯、(甲基)丙烯酸2-羥基丁酯、(甲基)丙烯酸3-羥基丁酯、(甲基)丙烯酸4-羥基丁基等的(甲基)丙烯酸羥烷基酯等。其中，由在所得(甲基)丙烯酸酯聚合物(A)的羥基與交聯劑(B)的反應性及與其他單體的共聚合性的觀點而言，以具有碳數為1~4的羥基烷基的(甲基)丙烯酸羥烷基酯為佳。具體而言，可舉出例如，(甲基)丙烯酸2-羥基乙酯、(甲基)丙烯酸4-羥基丁酯等為佳，特別是可舉出丙烯酸2-羥基乙酯或丙烯酸4-羥基丁酯為佳。該等可以單獨使用，亦可組合2種以上使用。Hydroxyl-containing monomers, such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate hydroxyalkyl (meth)acrylates such as esters, 3-hydroxybutyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, etc. Among them, from the viewpoint of the reactivity between the hydroxyl group of the obtained (meth)acrylate polymer (A) and the crosslinking agent (B) and the copolymerizability with other monomers, those having a carbon number of 1 to 4 Hydroxyalkyl (meth)acrylates of hydroxyalkyl are preferred. Specifically, for example, 2-hydroxyethyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, etc. are preferable, especially 2-hydroxyethyl acrylate or 4-hydroxybutyl acrylate. Butyl esters are preferred. These may be used alone or in combination of two or more.

含羧基單體，可舉例如丙烯酸、甲基丙烯酸、巴豆酸、馬來酸、依康酸、檸康酸等的乙烯性不飽和羧酸。其中，由在所得(甲基)丙烯酸酯聚合物(A)的羧基與交聯劑(B)的反應性及與其他單體的共聚合性的觀點而言，以丙烯酸為佳。該等可以單獨使用，亦可組合2種以上使用。Examples of carboxyl group-containing monomers include ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, and citraconic acid. Among them, acrylic acid is preferred from the viewpoint of reactivity between the carboxyl group of the obtained (meth)acrylate polymer (A) and the crosslinking agent (B) and copolymerizability with other monomers. These may be used alone or in combination of two or more.

含胺基單體，可舉例如(甲基)丙烯酸胺基乙酯，(甲基)丙烯酸正丁酯胺基乙酯等。該等可以單獨使用，亦可組合2種以上使用。Amino group-containing monomers include, for example, aminoethyl (meth)acrylate, n-butylaminoethyl (meth)acrylate, and the like. These may be used alone or in combination of two or more.

(甲基)丙烯酸酯聚合物(A)，將含反應性基單體，作為構成該聚合物的單體單位以下限值含有1質量%以上為佳，特別是以含有5質量%以上為佳，進一步以含有8質量%以上為佳，含反應性基單體為含羥基單體時，以含有15質量%以上為特佳。此外，(甲基)丙烯酸酯聚合物(A)，將含反應性基單體，作為構成該聚合物的單體單位以上限值含有35質量%以下為佳，特別是以含有30質量%以下為佳，進一步以含有25質量%以下為佳，含反應性基單體為含羧基單體時，以含有20質量%以下為佳，以含有12質量%以下為特佳。(甲基)丙烯酸酯聚合物(A)，以上述的量包含含反應性基單體，則可在所得的黏著劑中形成良好的交聯結構，能夠得到所期望的凝聚力。此外，有使黏著劑中的著色劑(D)的分散性變良好的傾向，所得的黏著劑，全光線穿透率及明度L*(甚至是色度a*及b*、以及霧度值)的再現性及均一性變良好，成為顯示優良的外觀協調性及文字視認性者。再者，含反應性基單體為含羥基單體時，含量在15質量%以上，則會在黏著劑中殘存既定量的羥基。羥基為親水性基，在既定量黏著劑中存在如此的親水性基，則即使黏著劑被放置在高溫高濕條件下時，與在該高溫高濕條件下浸入黏著劑的水分的相溶性佳，結果，恢復到常溫常濕時可抑制黏著劑的白化(耐濕熱白化性優良)。The (meth)acrylate polymer (A) preferably contains a reactive group-containing monomer as a monomer unit constituting the polymer at least 1% by mass, particularly preferably at least 5% by mass. , it is more preferable to contain 8% by mass or more, and when the reactive group-containing monomer is a hydroxyl-containing monomer, it is particularly preferable to contain 15% by mass or more. In addition, the (meth)acrylate polymer (A) preferably contains a reactive group-containing monomer as a monomer unit constituting the polymer at an upper limit of 35% by mass or less, particularly 30% by mass or less. More preferably, it is more preferably not more than 25% by mass, and when the reactive group-containing monomer is a carboxyl group-containing monomer, it is preferably not more than 20% by mass, and most preferably not more than 12% by mass. When the (meth)acrylate polymer (A) contains the reactive group-containing monomer in the above-mentioned amount, a good cross-linked structure can be formed in the obtained adhesive, and a desired cohesive force can be obtained. In addition, there is a tendency to improve the dispersibility of the colorant (D) in the adhesive, and the resulting adhesive has a total light transmittance and lightness L* (even chroma a* and b*, and haze value ) becomes better in reproducibility and uniformity, and becomes one that exhibits excellent appearance coordination and character visibility. Furthermore, when the reactive group-containing monomer is a hydroxyl-containing monomer, if the content is more than 15% by mass, a predetermined amount of hydroxyl groups will remain in the adhesive. The hydroxyl group is a hydrophilic group, and if such a hydrophilic group exists in a given amount of adhesive, even when the adhesive is placed under high temperature and high humidity conditions, the compatibility with the moisture impregnated into the adhesive under the high temperature and high humidity conditions is good. , As a result, the whitening of the adhesive can be suppressed when returning to normal temperature and humidity (excellent resistance to heat and humidity whitening).

此外，(甲基)丙烯酸酯聚合物(A)，作為構成該聚合物的單體單位，不含有含羧基單體亦佳。由於羧基係酸成分，故藉由不含有含羧基單體，可抑制黏著劑的黏附對象，因酸而發生異常，例如，即使存在錫摻雜氧化銦(ITO)等的透明導電膜、金屬膜等時，也可以抑制因酸而發生該等異常(腐蝕、電阻值變化等)。惟，可容許以不發生該異常的程度，含有既定量的含羧基單體。具體而言，在(甲基)丙烯酸酯聚合物(A)中，作為單體單位，可容許含有含羧基單體0.1質量%以下，較佳為0.01質量%以下，更佳的是0.001以質量%以下。Moreover, it is also preferable that a (meth)acrylate polymer (A) does not contain a carboxyl group-containing monomer as a monomer unit which comprises this polymer. Due to the carboxyl-based acid component, by not containing a carboxyl-containing monomer, it is possible to suppress the adhesion object of the adhesive, and abnormalities due to acid, for example, even if there are transparent conductive films such as tin-doped indium oxide (ITO), metal films In such cases, it is also possible to suppress the occurrence of such abnormalities (corrosion, change in resistance value, etc.) due to acid. However, it is permissible to contain a predetermined amount of carboxyl group-containing monomers to such an extent that this abnormality does not occur. Specifically, in the (meth)acrylate polymer (A), as a monomer unit, it is allowed to contain a carboxyl group-containing monomer in an amount of 0.1% by mass or less, preferably 0.01% by mass or less, more preferably 0.001% by mass %the following.

(甲基)丙烯酸酯聚合物(A)，以含有(甲基)丙烯酸烷基酯作為構成該聚合物的單體單位為佳。藉此可顯現良好的黏著性。烷基可為直鏈狀，或亦可為分支鏈狀。The (meth)acrylate polymer (A) preferably contains an alkyl (meth)acrylate as a monomer unit constituting the polymer. In this way, good adhesion can be exhibited. The alkyl group may be linear or branched.

作為(甲基)丙烯酸烷基酯，從黏著性的觀點而言，烷基的碳數為1~20的(甲基)丙烯酸烷基酯為佳。作為烷基的碳數為1~20的丙烯酸烷基酯，可舉出(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸丙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸正戊酯、(甲基)丙烯酸正己酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸正癸酯、(甲基)丙烯酸正十二烷酯、(甲基)丙烯酸肉豆蔻酯、(甲基)丙烯酸棕櫚酯、(甲基)丙烯酸硬脂酯等。其中以更加提升黏著性的觀點而言，以烷基的碳數為1~8的(甲基)丙烯酸酯為佳，以(甲基)丙烯酸甲酯、(甲基)丙烯酸正丁酯或(甲基)丙烯酸2-乙基己酯為特佳，以甲基丙烯酸甲酯、丙烯酸正丁酯、或丙烯酸2-乙基己酯為更佳。再者，該等可以單獨使用，亦可組合2種以上使用。As the alkyl (meth)acrylate, an alkyl (meth)acrylate having 1 to 20 carbon atoms in the alkyl group is preferable from the viewpoint of adhesiveness. Examples of alkyl acrylates having 1 to 20 carbon atoms in the alkyl group include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and n-butyl (meth)acrylate. ester, n-pentyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isooctyl (meth)acrylate, n-decyl (meth)acrylate, ( n-dodecyl methacrylate, myristyl (meth)acrylate, palmityl (meth)acrylate, stearyl (meth)acrylate, and the like. Among them, from the point of view of improving adhesiveness, (meth)acrylates with alkyl carbon numbers of 1 to 8 are preferred, and methyl (meth)acrylate, n-butyl (meth)acrylate or ( 2-ethylhexyl methacrylate is particularly preferred, and methyl methacrylate, n-butyl acrylate, or 2-ethylhexyl acrylate is more preferred. In addition, these may be used individually or in combination of 2 or more types.

(甲基)丙烯酸酯聚合物(A)，作為構成該聚合物的單體單位，以含有40質量%以上的(甲基)丙烯酸烷基酯為佳，特別是以含有50質量%以上為佳，進一步以含有60質量%以上為佳。如果(甲基)丙烯酸烷基酯的含量在上述下限值，則(甲基)丙烯酸酯聚合物(A)可發揮適當的黏著性。此外，(甲基)丙烯酸酯聚合物(A)，以含有99質量%以下的(甲基)丙烯酸烷基酯作為構成該聚合物的單體單位為佳，特別是以含有95質量%以下為佳，進一步以含有90質量%以下為佳。(甲基)丙烯酸烷基酯的含量在上述上限值，則可在(甲基)丙烯酸酯聚合物(A)中導入適當量的含反應性官能基單體等的其他單體成分。The (meth)acrylate polymer (A) preferably contains 40% by mass or more of an alkyl (meth)acrylate as a monomer unit constituting the polymer, particularly preferably 50% by mass or more , and further preferably contain 60% by mass or more. The (meth)acrylate polymer (A) can exhibit appropriate adhesiveness as content of an alkyl (meth)acrylate is the said lower limit. In addition, the (meth)acrylate polymer (A) preferably contains 99% by mass or less of alkyl (meth)acrylate as a monomer unit constituting the polymer, and particularly preferably contains 95% by mass or less of alkyl (meth)acrylate preferably, more preferably 90% by mass or less. When the content of the alkyl (meth)acrylate is the above upper limit, an appropriate amount of other monomer components such as a reactive functional group-containing monomer can be introduced into the (meth)acrylate polymer (A).

上述(甲基)丙烯酸酯聚合物(A)，含有在分子內具有脂環式結構的單體(含脂環式結構單體)作為構成該聚合物的單體單位亦佳。含脂環式結構單體由於體積大，藉由使它存在於聚合物中，推測可擴大聚合物相互的間隔，而可使所得黏著劑的柔軟性優良。藉此可使黏著劑的段差追隨性優良。It is also preferable that the said (meth)acrylate polymer (A) contains the monomer (alicyclic structure containing monomer) which has an alicyclic structure in a molecule|numerator as a monomer unit which comprises this polymer. Since the alicyclic structure-containing monomer is bulky, by making it exist in the polymer, it is presumed that the distance between the polymers can be enlarged, and the resulting adhesive can be excellent in flexibility. Thereby, the step followability of the adhesive can be improved.

在含脂環式結構單體中的脂環式結構的碳環，可為飽和結構者，亦可為具有一部分不飽和鍵結者。此外，脂環式結構，可為單環的脂環式結構，亦可為二環、三環等的多環的脂環式結構。由使所得(甲基)丙烯酸酯聚合物(A)相互間具有適當的距離，賦予黏著劑更高的應力緩和性的觀點而言，上述脂環式結構，以多環的脂環式結構(多環結構)為佳。再者，考慮(甲基)丙烯酸酯聚合物(A)與其他的成分的相溶性，上述多環結構以二環至四環為特佳。此外，由與上述同樣賦予應力緩和性的觀點而言，脂環式結構的碳數(指所有形成環的部分的碳數，複數的環獨立存在時係指其合計的碳數)，通常以5以上為佳，以7以上特別佳。另一方面，脂環式結構的碳數的上限，並無特別限制，以與上述同樣的相溶性的觀點而言，以15以下為佳，以10以下特別佳。The carbocyclic ring of the alicyclic structure in the alicyclic structure-containing monomer may have a saturated structure or may have a part of unsaturated bonds. In addition, the alicyclic structure may be a monocyclic alicyclic structure or a polycyclic alicyclic structure such as bicyclic or tricyclic. From the viewpoint of making the resulting (meth)acrylate polymers (A) have an appropriate distance from each other and imparting higher stress relaxation properties to the adhesive, the above-mentioned alicyclic structure is a polycyclic alicyclic structure ( polycyclic structure) is preferred. Furthermore, in consideration of compatibility between the (meth)acrylate polymer (A) and other components, the polycyclic structure is particularly preferably bicyclic to tetracyclic. In addition, from the viewpoint of imparting stress relaxation properties similarly to the above, the carbon number of the alicyclic structure (referring to the carbon number of all the parts forming the ring, and when plural rings exist independently refers to the total carbon number of them) is usually represented by 5 or higher is preferable, and 7 or higher is particularly preferable. On the other hand, the upper limit of the number of carbon atoms in the alicyclic structure is not particularly limited, but it is preferably 15 or less, particularly preferably 10 or less, from the viewpoint of the same compatibility as above.

作為上述含脂環式結構單體，具體而言，可舉出(甲基)丙烯酸環己酯、(甲基)丙烯酸二環戊酯、(甲基)丙烯酸金剛烷酯、(甲基)丙烯酸異莰酯(isobornyl)、(甲基)丙烯酸二環戊烯酯、(甲基)丙烯酸二環戊烯氧基乙酯等，其中，以可發揮更優良的段差追隨性之(甲基)丙烯酸二環戊酯(脂環式結構的碳數︰10)、(甲基)丙烯酸金剛烷酯(脂環式結構的碳數︰10)或(甲基)丙烯酸異莰酯(脂環式結構的碳數︰7)為佳，特別是以(甲基)丙烯酸異莰酯為佳，進一步以丙烯酸異莰酯為佳。該等，可以1種單獨使用，亦可以組合2種以上使用。Specific examples of the alicyclic structure-containing monomer include cyclohexyl (meth)acrylate, dicyclopentanyl (meth)acrylate, adamantyl (meth)acrylate, Isobornyl (isobornyl), dicyclopentenyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, etc. Among them, (meth)acrylic acid can exhibit better step followability Dicyclopentyl (carbon number of alicyclic structure: 10), adamantyl (meth)acrylate (carbon number of alicyclic structure: 10) or isocamphoryl (meth)acrylate (carbon number of alicyclic structure Carbon number: 7) is preferred, especially isobornyl (meth)acrylate, and isobornyl acrylate is further preferred. These may be used alone or in combination of two or more.

(甲基)丙烯酸酯聚合物(A)，含有含脂環式結構單體作為構成該聚合物的單體單位時，以含有1質量%以上該脂環式結構含有單體為佳，特別是以含有4質量%以上為佳，進一步以含有8質量%以上為佳。此外，(甲基)丙烯酸酯聚合物(A)，以含有30質量%以下的含脂環式結構單體作為構成該聚合物的單體單位為佳，特別是以含有22質量%以下為佳，進一步以含有14質量%以下為佳。藉由使含脂環式結構單體的含量在上述範圍，能夠使所得黏著劑的段差追隨性及耐起泡性更優良，同時對塑膠的黏著力更優良。When the (meth)acrylate polymer (A) contains an alicyclic structure-containing monomer as a monomer unit constituting the polymer, it is preferable to contain the alicyclic structure-containing monomer in an amount of 1% by mass or more, especially It is more preferable to contain 4 mass % or more, and it is more preferable to contain 8 mass % or more. In addition, the (meth)acrylate polymer (A) preferably contains not more than 30% by mass of an alicyclic structure-containing monomer as a monomer unit constituting the polymer, particularly preferably not more than 22% by mass. , and further preferably contain 14% by mass or less. By keeping the content of the alicyclic structure-containing monomer within the above range, the resulting adhesive can have better step followability and anti-foaming properties, and at the same time, have better adhesion to plastics.

此外，上述(甲基)丙烯酸酯聚合物(A)，以含有含氮原子單體作為構成該聚合物的單體單位為佳。藉由使含氮原子單體作為構成單位存在於聚合物中，可賦予黏著劑既定的極性，而亦可對如玻璃具有某種程度的極性的被黏附體，親和性優良。在使(甲基)丙烯酸酯聚合物(A)具有適當的剛性的觀點而言，以具有含氮雜環的單體作為上述含氮原子單體為佳。此外，在構成的黏著劑的高維結構中提高來自上述含氮原子單體之部分的自由度的觀點而言，該含氮原子單體，以在用於形成(甲基)丙烯酸酯聚合物(A)的聚合的1個聚合性基以外，以不含有反應性不飽和雙鍵鍵結基為佳。再者，上述含反應性官能基單體，排除在此所述含氮原子單體。In addition, the above-mentioned (meth)acrylate polymer (A) preferably contains a nitrogen atom-containing monomer as a monomer unit constituting the polymer. Predetermined polarity can be imparted to the adhesive by making the nitrogen atom-containing monomer exist in the polymer as a constituent unit, and it is also possible to have an adherend having a certain degree of polarity, such as glass, so that the affinity is excellent. From the viewpoint of imparting appropriate rigidity to the (meth)acrylate polymer (A), a monomer having a nitrogen-containing heterocyclic ring is preferred as the nitrogen-atom-containing monomer. In addition, from the viewpoint of increasing the degree of freedom of the part derived from the nitrogen atom-containing monomer in the high-dimensional structure of the adhesive, the nitrogen atom-containing monomer used to form the (meth)acrylate polymer (A) It is preferable not to contain a reactive unsaturated double bond bonding group other than one polymeric group which polymerizes. Furthermore, the above-mentioned reactive functional group-containing monomers exclude the nitrogen-atom-containing monomers described here.

作為具有含氮雜環的單體，可舉出例如，N-(甲基)丙烯醯嗎啉、N-乙烯基-2-吡咯烷酮(pyrrolidone)、N-(甲基)丙烯醯基吡咯烷酮、N-(甲基)丙烯醯基哌啶(piperidine)、N-(甲基)丙烯醯基吡咯啶(pyrrolidine)、N-(甲基)丙烯醯基氮丙啶、氮丙啶基乙基(甲基)丙烯酸酯、2-乙烯基吡啶、4-乙烯基吡啶、2-乙烯基吡嗪、1-乙烯基咪唑、N-乙烯基咔唑、N-乙烯基鄰苯二甲醯亞胺等，其中，以能夠發揮更優良的黏著力的N-(甲基)丙烯醯嗎啉為佳，特別是以N-丙烯醯嗎啉為佳。該等，可以1種單獨使用，亦可以組合2種以上使用。As a monomer having a nitrogen-containing heterocycle, for example, N-(meth)acrylmorpholine, N-vinyl-2-pyrrolidone (pyrrolidone), N-(meth)acrylpyrrolidone, N -(meth)acryloylpiperidine (piperidine), N-(meth)acryloylpyrrolidine (pyrrolidine), N-(meth)acryloyl aziridine, aziridinyl ethyl (methyl) base) acrylate, 2-vinylpyridine, 4-vinylpyridine, 2-vinylpyrazine, 1-vinylimidazole, N-vinylcarbazole, N-vinylphthalimide, etc., Among them, N-(meth)acryloylmorpholine, which exhibits better adhesive force, is preferable, and N-acryloylmorpholine is particularly preferable. These may be used alone or in combination of two or more.

(甲基)丙烯酸酯聚合物(A)，含有含氮原子單體作為構成該聚合物的單體單位時，以含有1質量%以上的含氮原子單體為佳，特別是以含有4質量%以上為佳，進一步以含有8質量%以上為佳。此外，(甲基)丙烯酸酯聚合物(A)，作為構成該聚合物的單體單位，含有20質量%以下含氮原子單體為佳，特別是以含有16質量%以下為佳，進一步以含有12質量%以下為佳。含氮原子單體的含量在上述的範圍內，則所得黏著劑能夠對玻璃充分發揮優良的黏著力。(Meth)acrylate polymer (A), when containing nitrogen-atom-containing monomer as the monomer unit constituting the polymer, it is better to contain more than 1% by mass of nitrogen-atom-containing monomer, especially to contain 4% by mass % or more is preferable, and it is more preferable to contain 8 mass % or more. In addition, the (meth)acrylate polymer (A) preferably contains 20% by mass or less of a nitrogen atom-containing monomer as a monomer unit constituting the polymer, particularly preferably 16% by mass or less, and further preferably contains It is preferable to contain 12 mass % or less. If the content of the nitrogen atom-containing monomer is within the above-mentioned range, the obtained adhesive can fully exert excellent adhesion to glass.

(甲基)丙烯酸酯聚合物(A)，可根據所期望，含有其他的單體作為構成該聚合物的單體單位。作為其他的單體，為了不阻礙含反應性官能基單體的上述的作用，以不含有反應性官能基的單體為佳。作為該單體，可舉出例如(甲基)丙烯酸甲氧基乙酯、(甲基)丙烯酸乙氧基乙酯等的(甲基)丙烯酸烷氧基烷基酯、醋酸乙烯酯、苯乙烯等。該等可以單獨使用，亦可組合2種以上使用。The (meth)acrylate polymer (A) may contain another monomer as the monomer unit which comprises this polymer as desired. As other monomers, monomers not containing a reactive functional group are preferable so as not to hinder the above-mentioned action of the reactive functional group-containing monomer. Examples of such monomers include alkoxyalkyl (meth)acrylates such as methoxyethyl (meth)acrylate and ethoxyethyl (meth)acrylate, vinyl acetate, styrene wait. These may be used alone or in combination of two or more.

(甲基)丙烯酸酯聚合物(A)，以直鏈狀的聚合物為佳。藉由以直鏈狀的聚合物，不容易發生分子鏈的糾纏，而可期待凝聚力的提升，故容易得到在高溫高濕條件下的段差追隨性及耐起泡性優良的黏著劑。The (meth)acrylate polymer (A) is preferably a linear polymer. With a linear polymer, entanglement of molecular chains is less likely to occur, and an improvement in cohesion can be expected, so it is easy to obtain an adhesive with excellent step followability and foam resistance under high temperature and high humidity conditions.

此外，(甲基)丙烯酸酯聚合物(A)，以溶液聚合法所得的溶液聚合物為佳。藉由以溶液聚合物，容易得到高分子量的聚合物，而可期待凝聚力的提升，故容易得到在高溫高濕條件下的段差追隨性及耐起泡性優良的黏著劑。In addition, the (meth)acrylate polymer (A) is preferably a solution polymer obtained by a solution polymerization method. By using solution polymers, it is easy to obtain high molecular weight polymers, and the improvement of cohesive force can be expected, so it is easy to obtain adhesives with excellent step followability and foam resistance under high temperature and high humidity conditions.

(甲基)丙烯酸酯聚合物(A)的聚合態樣，可為隨機共聚物，亦可為嵌段(block)共聚物。The polymerization state of (meth)acrylate polymer (A) may be a random copolymer or a block (block) copolymer.

(甲基)丙烯酸酯聚合物(A)的重量平均分子量，下限值以20萬以上為佳，特別是以30萬以上為佳，進一步以40萬以上為佳。(甲基)丙烯酸酯聚合物(A)的重量平均分子量的下限值在上述的話，則所得黏著劑在高溫高濕條件下的段差追隨性及耐起泡性為更優良。The lower limit of the weight average molecular weight of the (meth)acrylate polymer (A) is preferably 200,000 or more, particularly preferably 300,000 or more, further preferably 400,000 or more. When the lower limit of the weight average molecular weight of the (meth)acrylate polymer (A) is as described above, the step followability and foaming resistance of the obtained adhesive under high-temperature and high-humidity conditions will be more excellent.

此外，(甲基)丙烯酸酯聚合物(A)的重量平均分子量，上限值以200萬以下為佳，以150萬以下更佳，特別是以90萬以下為佳，進一步以60萬以下為佳。(甲基)丙烯酸酯聚合物(A)的重量平均分子量的上限值在上述的話，則所得黏著劑的段差追隨性更優良。再者，在本說明書中的重量平均分子量，係以凝膠滲透層析(Gel Permeation Chromatography，GPC)法測定的標準聚苯乙烯換算的值。In addition, the upper limit of the weight average molecular weight of the (meth)acrylate polymer (A) is preferably not more than 2 million, more preferably not more than 1.5 million, particularly preferably not more than 900,000, and further preferably not more than 600,000. good. When the upper limit of the weight average molecular weight of the (meth)acrylate polymer (A) is the above, the step followability of the obtained adhesive is more excellent. In addition, the weight average molecular weight in this specification is the value of standard polystyrene conversion measured by the gel permeation chromatography (Gel Permeation Chromatography, GPC) method.

再者，在黏著性組合物P中，(甲基)丙烯酸酯聚合物(A)，可以1種單獨使用，亦可組合2種以上使用。In addition, in the adhesive composition P, a (meth)acrylate polymer (A) may be used individually by 1 type, and may use it in combination of 2 or more types.

(1-2)交聯劑(B) 交聯劑(B)，係藉由黏著劑組合物P的加熱，使(甲基)丙烯酸酯聚合物(A)交聯，而可良好地形成三維網狀結構。藉此，能夠提升黏著劑的凝聚力，而在高溫高濕條件下的段差追隨性優良。(1-2) Crosslinking agent (B) The crosslinking agent (B) crosslinks the (meth)acrylate polymer (A) by heating the adhesive composition P to form a three-dimensional network structure well. Thereby, the cohesive force of the adhesive can be improved, and the level difference followability under high temperature and high humidity conditions is excellent.

上述交聯劑(B)，只要是可與(甲基)丙烯酸酯聚合物(A)所具有的反應性基反應者即可，可舉出例如，異氰酸酯系交聯劑、環氧系交聯劑、胺系交聯劑、三聚氰胺系交聯劑、氮丙啶系交聯劑、聯胺系交聯劑、醛系交聯劑、噁唑啉系交聯劑、金屬烷氧化合物系交聯劑、金屬螯合物系交聯劑、金屬鹽系交聯劑、銨鹽系交聯劑等。上述之中，(甲基)丙烯酸酯聚合物(A)所具的反應性基為羥基時，使用與羥基的反應性優良的異氰酸酯系交聯劑為佳，(甲基)丙烯酸酯聚合物(A)所具有的反應性基為羧基時，使用與羧基的反應性優良的環氧系交聯劑為佳。再者，交聯劑(B)，可以單獨1種，或組合2種以上使用。The above-mentioned crosslinking agent (B) may be any one as long as it can react with the reactive group of the (meth)acrylate polymer (A), and examples thereof include isocyanate-based crosslinking agents and epoxy-based crosslinking agents. Agents, amine-based cross-linking agents, melamine-based cross-linking agents, aziridine-based cross-linking agents, hydrazine-based cross-linking agents, aldehyde-based cross-linking agents, oxazoline-based cross-linking agents, metal alkoxide-based cross-linking agents agent, metal chelate crosslinking agent, metal salt crosslinking agent, ammonium salt crosslinking agent, etc. Among the above, when the reactive group of the (meth)acrylate polymer (A) is a hydroxyl group, it is preferable to use an isocyanate-based crosslinking agent having excellent reactivity with the hydroxyl group, and the (meth)acrylate polymer (A) When the reactive group which A) has is a carboxyl group, it is preferable to use the epoxy type crosslinking agent excellent in the reactivity with a carboxyl group. In addition, a crosslinking agent (B) can be used individually by 1 type, or in combination of 2 or more types.

異氰酸酯系交聯劑，係至少含有聚異氰酸酯化合物者。聚異氰酸酯化合物，可舉例如，甲苯二異氰酸酯(tolylene diisocyanate)、二苯基甲烷二異氰酸酯、二甲苯二異氰酸酯(xylylene diisocyanate)等的芳香族聚異氰酸酯；六亞甲基二異氰酸酯等的脂肪族聚異氰酸酯；異佛爾酮二異氰酸酯、加氫二苯甲烷(diphenylmethane)二異氰酸酯等的脂環式聚異氰酸酯等，及該等的雙縮脲體、三聚異氰酸酯(isocyanurate)體、進一步與乙二醇、丙二醇、新戊二醇、三羥甲基丙烷、蓖麻油等的與含有低分子活性氫的化合物的反應物的加成物等。其中，與羥基的反應性的觀點而言，以三羥甲基丙烷改質的芳香族聚異氰酸酯為佳，以三羥甲基丙烷改質甲苯二異氰酸酯及三羥甲基丙烷改質二甲苯二異氰酸酯特別佳。The isocyanate-based crosslinking agent contains at least a polyisocyanate compound. Polyisocyanate compounds include, for example, aromatic polyisocyanates such as tolylene diisocyanate, diphenylmethane diisocyanate, and xylylene diisocyanate; and aliphatic polyisocyanates such as hexamethylene diisocyanate. Alicyclic polyisocyanates such as isophorone diisocyanate and hydrogenated diphenylmethane (diphenylmethane) diisocyanate, etc., and such biuret bodies, isocyanurate (isocyanurate) bodies, further combined with ethylene glycol, Adducts of reactants of propylene glycol, neopentyl glycol, trimethylolpropane, castor oil, etc., and compounds containing low-molecular active hydrogen, and the like. Among them, from the viewpoint of reactivity with hydroxyl groups, trimethylolpropane-modified aromatic polyisocyanate is preferable, and trimethylolpropane-modified toluene diisocyanate and trimethylolpropane-modified xylene diisocyanate are preferred. Isocyanates are particularly preferred.

環氧系交聯劑，可舉例如1,3-雙(N,N-二縮水甘油基胺基甲基)環己烷、N,N,N′,N′-四縮水甘油基間二甲苯二胺、乙二醇二縮水甘油醚、1,6-己二醇二縮水甘油醚、三羥甲基丙烷二縮水甘油醚、二縮水甘油基苯胺、二縮水甘油基胺等。其中，與羧基的反應性的觀點而言，以1,3-雙(N,N-二縮水甘油基胺基甲基)環己烷為佳。Epoxy crosslinking agent, such as 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane, N,N,N',N'-tetraglycidyl m-xylene Diamine, ethylene glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, trimethylolpropane diglycidyl ether, diglycidyl aniline, diglycidyl amine, etc. Among these, 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane is preferable from the viewpoint of reactivity with carboxyl groups.

在黏著性組合物P中的交聯劑(B)的含量，對(甲基)丙烯酸酯聚合物(A)100質量份，以0.01質量份以上為佳，以0.03質量份以上更佳，特別是以0.05質量份以上為佳，進一步以0.1質量份以上為佳。此外，該含量，以10質量份以下為佳，以5質量份以下更佳，特別是以1質量份以下為佳，進一步以0.4質量份以下為佳，以0.25質量份以下最佳。藉由使交聯劑(B)的含量在上述範圍，所得黏著劑發揮良好的凝聚力，而在高溫高濕條件下的段差追隨性優良。The content of the crosslinking agent (B) in the adhesive composition P is preferably at least 0.01 parts by mass, more preferably at least 0.03 parts by mass, and especially It is preferably at least 0.05 parts by mass, and more preferably at least 0.1 parts by mass. In addition, the content is preferably not more than 10 parts by mass, more preferably not more than 5 parts by mass, particularly preferably not more than 1 part by mass, further preferably not more than 0.4 parts by mass, most preferably not more than 0.25 parts by mass. By making the content of the crosslinking agent (B) within the above-mentioned range, the obtained adhesive exhibits good cohesive force, and has excellent step followability under high-temperature and high-humidity conditions.

(1-3)活性能量線硬化性成分(C) 在將關於本實施形態的黏著性組合物P交聯而成的黏著劑，以活性能量線硬化而得之硬化後黏著劑(構成硬化後黏著劑層的黏著劑)，推測活性能量線硬化性成分(C)互相聚合，該聚合之活性能量線硬化性成分(C)與(甲基)丙烯酸酯聚合物(A) 的交聯結構(三維網狀結構)纏繞。具有該高維結構的黏著劑，發揮非常優良的耐久性，而在在高溫高濕條件下的段差追隨性及耐起泡性特別優良。(1-3) Active Energy Ray Curing Component (C) In the adhesive obtained by crosslinking the adhesive composition P related to this embodiment, the cured adhesive obtained by curing with active energy rays (adhesive constituting the cured adhesive layer), the active energy ray curability is estimated. The components (C) are mutually polymerized, and the polymerized active energy ray-curable component (C) is entangled with the crosslinked structure (three-dimensional network structure) of the (meth)acrylate polymer (A). The adhesive having this high-dimensional structure exhibits very excellent durability, and is particularly excellent in step followability and anti-foaming under high temperature and high humidity conditions.

活性能量線硬化性成分(C)，只要是可藉由照射活性能量線而硬化，得到上述效果的成分，並無特別限制，可為單體、寡聚物或高分子(polymer)的任何一種，亦可為該等的混合物。其中，較佳的可舉出耐起泡性優良的多官能丙烯酸酯系單體。The active energy ray-curing component (C) is not particularly limited as long as it can be cured by irradiating active energy rays to obtain the above-mentioned effects, and it may be any of monomers, oligomers, or polymers. , may also be a mixture of these. Among these, polyfunctional acrylate-based monomers excellent in foam resistance are preferable.

多官能丙烯酸酯系單體，可舉例如1,4-丁二醇二(甲基)丙烯酸酯、1,6-己二醇二(甲基)丙烯酸酯、新戊二醇二(甲基)丙烯酸酯、聚乙二醇二(甲基)丙烯酸酯、新戊二醇己二酸酯二(甲基)丙烯酸酯、羥基三甲基乙酸新戊二醇二(甲基)丙烯酸酯、二環戊基二(甲基)丙烯酸酯、三環癸烷二甲醇(甲基)丙烯酸酯、己內酯改質二環戊烯基二(甲基)丙烯酸酯、環氧乙烷改質磷酸二(甲基)丙烯酸酯、二(丙烯醯氧乙基)三聚異氰酸酯、烯丙基化環己基二(甲基)丙烯酸酯、乙氧基化雙酚A二丙烯酸酯，9,9-雙[4-(2-丙烯醯氧乙氧基)苯基]芴等的2官能型；三羥甲基丙烷三(甲基)丙烯酸酯、二新戊四醇三(甲基)丙烯酸酯、丙酸改質二新戊四醇三(甲基)丙烯酸酯、新戊四醇三(甲基)丙烯酸酯、環氧丙烷改質三羥甲基丙烷三(甲基)丙烯酸酯、參(丙烯醯氧乙基)三聚異氰酸酯、ε-己內酯改質參(2-(甲基)丙烯醯氧乙基)三聚異氰酸酯等的3官能型；二甘油(diglycerine)四(甲基)丙烯酸酯、新戊四醇四(甲基)丙烯酸酯等的4官能型；丙酸改質二新戊四醇五(甲基)丙烯酸酯等的5官能型；二新戊四醇六(甲基)丙烯酸酯、己內酯改質二新戊四醇六(甲基)丙烯酸酯等的6官能型等。該等，可以1種單獨使用，亦可以組合2種以上使用。以與(甲基)丙烯酸酯聚合物(A)的相溶性的觀點而言，多官能丙烯酸酯系單體，分子量小於1000者為佳。Multifunctional acrylate monomers, such as 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate Acrylates, Polyethylene Glycol Di(meth)acrylate, Neopentyl Glycol Adipate Di(meth)acrylate, Neopentyl Glycol Di(meth)acrylate, Dicyclo Amyl di(meth)acrylate, tricyclodecane dimethanol (meth)acrylate, caprolactone modified dicyclopentenyl di(meth)acrylate, ethylene oxide modified phosphate di( Meth)acrylate, di(acryloxyethyl)isocyanurate, allylated cyclohexyl di(meth)acrylate, ethoxylated bisphenol A diacrylate, 9,9-bis[4 -(2-Acryloxyethoxy)phenyl]fluorene, etc. 2-functional type; trimethylolpropane tri(meth)acrylate, diperythritol tri(meth)acrylate, propionic acid modified Dineopentylthritol tri(meth)acrylate, neopentylthritol tri(meth)acrylate, propylene oxide modified trimethylolpropane tri(meth)acrylate, ginseng (acryloxyethyl Trifunctional type such as trimeric isocyanate, ε-caprolactone-modified ginseng (2-(meth)acryloxyethyl) isocyanate; diglycerine tetra(meth)acrylate, new 4-functional type such as pentaerythritol tetra(meth)acrylate; 5-functional type such as propionic acid-modified dipenteoerythritol penta(meth)acrylate; dipenteoerythritol hexa(meth)acrylate , Hexafunctional type such as caprolactone-modified diperythritol hexa(meth)acrylate, etc. These may be used alone or in combination of two or more. From the viewpoint of compatibility with the (meth)acrylate polymer (A), the polyfunctional acrylate monomer preferably has a molecular weight of less than 1,000.

上述之中，從所得黏著劑的耐起泡性的觀點而言，以二(丙烯醯氧乙基)三聚異氰酸酯、參(丙烯醯氧乙基)三聚異氰酸酯、ε-己內酯改質三(2-(甲基)丙烯醯氧乙基)三聚異氰酸酯等在分子內含有三聚異氰酸酯結構的多官能丙烯酸酯系單體、或三環癸烷二甲醇(甲基)丙烯酸酯等在分子內含有環狀結構(特別是環烷(cycloalkane)結構)的多官能丙烯酸酯系單體為佳，以3官能以上且在分子內含有三聚異氰酸酯結構的多官能丙烯酸酯系單體、或以2官能以上且在分子內含有多環結構(特別是環烷的多環結構)的多官能丙烯酸酯系單體為更佳，以ε-己內酯改質參(2-(甲基)丙烯醯氧乙基)三聚異氰酸酯或三環癸烷二甲醇(甲基)丙烯酸酯為特佳，進一步以ε-己內酯改質參(2-丙烯醯氧乙基)三聚異氰酸酯或三環癸烷二甲醇丙烯酸酯為佳，以ε-己內酯改質參(2-丙烯醯氧乙基)三聚異氰酸酯最佳。Among the above, from the viewpoint of the anti-foaming property of the obtained adhesive, di(acryloxyethyl)isocyanurate, ginseng(acryloxyethyl)isocyanate, ε-caprolactone modified Tris(2-(meth)acryloxyethyl) isocyanate and other polyfunctional acrylate monomers containing isocyanate structure in the molecule, or tricyclodecane dimethanol (meth)acrylate, etc. Polyfunctional acrylate monomers containing a ring structure (especially a cycloalkane structure) in the molecule are preferred, and polyfunctional acrylate monomers with three or more functions and a trimeric isocyanate structure in the molecule, or It is more preferable to use a polyfunctional acrylate monomer with more than 2 functions and a polycyclic structure (especially a cycloalkane polycyclic structure) in the molecule, and use ε-caprolactone to modify the para(2-(methyl) Acryloxyethyl) isocyanate or tricyclodecane dimethanol (meth)acrylate is particularly preferred, and ε-caprolactone is further modified to refer to (2-acryloxyethyl) isocyanate or tricyclodecane Cyclodecane dimethanol acrylate is preferred, and ε-caprolactone-modified ginseng (2-acryloxyethyl) isocyanate is the best.

在黏著劑組合物P中的活性能量線硬化性成分(C)的含量，在使所得硬化後黏著劑的耐起泡性更優良的觀點上，對(甲基)丙烯酸酯聚合物(A)100質量份，作為下限值以1質量份以上為佳，以3質量份以上為特佳，以4質量份以上為更佳。另一方面，上述含量，在所得硬化後黏著劑的黏著力，而且在高溫高濕條件下的段差追隨性及耐起泡性的觀點上而言，作為上限值以20質量份以下為佳，以12質量份以下為特佳，以8質量份以下為更佳。The content of the active energy ray-curable component (C) in the adhesive composition P is lower than that of the (meth)acrylate polymer (A) from the viewpoint of improving the foaming resistance of the obtained adhesive after curing. 100 parts by mass, the lower limit is preferably at least 1 part by mass, particularly preferably at least 3 parts by mass, and more preferably at least 4 parts by mass. On the other hand, the above-mentioned content is preferably an upper limit of 20 parts by mass or less from the standpoint of the adhesive force of the obtained hardened adhesive, step followability under high-temperature and high-humidity conditions, and anti-foaming properties. , it is particularly preferred to be less than 12 parts by mass, and more preferably less than 8 parts by mass.

(1-4)著色劑(D) 著色劑(D)係上述著色劑。具體的種類、在黏著劑中的含量等等，係如上所述。(1-4) Colorant (D) The colorant (D) is the above-mentioned colorant. The specific types, content in the adhesive, and the like are as described above.

著色劑(D)對(甲基)丙烯酸酯聚合物(A)100質量份的含量，以0.01質量份以上為佳，以0.05質量份以上為更佳，以0.1質量份以上為特佳，進一步以0.15質量份以上為佳。此外，上述含量，以2質量份以下為佳，以1質量份以下為更佳，以0.5質量份以下為特佳，進一步以0.2質量份以下為佳。The content of the colorant (D) to 100 parts by mass of the (meth)acrylate polymer (A) is preferably at least 0.01 part by mass, more preferably at least 0.05 part by mass, particularly preferably at least 0.1 part by mass, and further It is preferably at least 0.15 parts by mass. In addition, the above content is preferably at most 2 parts by mass, more preferably at most 1 part by mass, particularly preferably at most 0.5 parts by mass, and further preferably at most 0.2 parts by mass.

(1-5)光聚合起始劑(E) 使用紫外線作為使黏著性組合物P硬化的活性能量線時，黏著性組合物P，進一步含有光聚合起始劑(E)為佳。藉由含有如此的光聚合起始劑(E)，可有效的使活性能量線硬化性成分(C)聚合，此外，能夠減少聚合硬化時間及活性能量線的照射量。(1-5) Photopolymerization initiator (E) When ultraviolet rays are used as active energy rays for curing the adhesive composition P, it is preferable that the adhesive composition P further contains a photopolymerization initiator (E). By containing such a photopolymerization initiator (E), the active energy ray-curable component (C) can be efficiently polymerized, and the polymerization hardening time and the irradiation amount of active energy rays can be reduced.

如此的光聚合起始劑(E)，可舉出例如，安息香、安息香甲醚、安息香***、安息香異丙醚、安息香正丁醚、安息香異丁醚、苯乙酮、二甲基胺基苯乙酮、2,2-二甲氧基-2-苯基苯乙酮、2,2-二乙氧基-2-苯基苯乙酮、2-羥基-2-甲基-1-苯基丙烷-1-酮、1-羥基環己基苯酮、2-甲基-1-[4-(甲基硫代)苯基]-2-嗎啉基(morpholino)-丙烷-1-酮、4-(2-羥基乙氧基)苯基-2-(羥基-2-丙基)酮、二苯甲酮、對苯基二苯甲酮、4,4′-二乙基胺基二苯甲酮、二氯二苯甲酮、2-甲基蒽醌、2-乙基蒽醌、2-第三丁基蒽醌、2-胺基蒽醌、2-甲基噻噸酮、2-乙基噻噸酮、2-氯噻噸酮、2,4-二甲基噻噸酮、2,4-二乙基噻噸酮、苄基二甲基縮酮、苯乙酮二甲基縮酮、對二甲基胺基安息香酸酯、寡聚[2-羥基-2-甲基-1[4-(1-甲基乙烯基)苯基]丙酮]、2,4,6-三甲基苯甲醯基二苯基氧化膦、雙(2,4,6-三甲基苯甲醯基)苯基氧化膦等。該等可以單獨使用，亦可組合2種以上使用。Such a photopolymerization initiator (E) includes, for example, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin n-butyl ether, benzoin isobutyl ether, acetophenone, dimethylaminobenzene Ethanone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2-hydroxy-2-methyl-1-phenyl Propan-1-one, 1-hydroxycyclohexyl benzophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholino-propan-1-one, 4 -(2-Hydroxyethoxy)phenyl-2-(hydroxy-2-propyl)ketone, benzophenone, p-phenylbenzophenone, 4,4′-diethylaminobenzophenone Ketone, dichlorobenzophenone, 2-methylanthraquinone, 2-ethylanthraquinone, 2-tert-butylanthraquinone, 2-aminoanthraquinone, 2-methylthioxanthone, 2-ethylanthraquinone Benzyl thioxanthone, 2-chlorothioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, benzyl dimethyl ketal, acetophenone dimethyl ketal , p-dimethylaminobenzoate, oligo[2-hydroxy-2-methyl-1[4-(1-methylvinyl)phenyl]acetone], 2,4,6-trimethyl Benzoyldiphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, etc. These may be used alone or in combination of two or more.

上述之中，即使隔著含有紫外線吸收劑的塑膠板照射紫外線時，亦容易裂解，而容易使黏著劑確實硬化的，氧化膦系的光聚合起始劑為佳。具體而言，以2,4,6-三甲基苯甲醯基二苯基氧化膦、雙(2,4,6-三甲基苯甲醯基)苯基氧化膦等為佳。Among the above, a phosphine oxide-based photopolymerization initiator is preferable because it is easily cracked even when irradiated with ultraviolet rays through a plastic plate containing an ultraviolet absorber, and the adhesive is easily hardened. Specifically, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, and the like are preferable.

在黏著劑組合物P中的光聚合起始劑(E)的含量，相對於活性能量線硬化性成分(C)100質量份，作為下限值以0.1質量份以上為佳，特別是以1質量份以上為佳，進一步以5質量份以上為佳。此外，作為上限值以30質量份以下為佳，特別是以20質量份以下為佳，進一步以12質量份以下為佳。The lower limit of the content of the photopolymerization initiator (E) in the adhesive composition P is preferably 0.1 parts by mass or more, particularly 100 parts by mass of the active energy ray-curable component (C). It is preferably at least 5 parts by mass, and more preferably at least 5 parts by mass. In addition, the upper limit is preferably not more than 30 parts by mass, particularly preferably not more than 20 parts by mass, further preferably not more than 12 parts by mass.

光聚合起始劑(E)的量相對於著色劑(D)的量的質量比(光聚合起始劑(E)/著色劑(D)) 以0.5以上為佳，特別是以1以上為佳，進一步以2以上為佳。此外，上述比以20以下為佳，以12以下為更佳，特別是以8以下為佳，進一步以4以下為佳。藉由光聚合起始劑(E)的量相對於著色劑(D)的量的比在上述範圍，可使全光線穿透率、明度L*等等良好，同時容易藉由活性能量線硬化得到具有良好的凝聚力、黏著性等等的黏著劑，亦容易使耐起泡性優良。The mass ratio of the amount of the photopolymerization initiator (E) to the amount of the colorant (D) (photopolymerization initiator (E)/colorant (D)) is preferably 0.5 or more, particularly 1 or more. Good, more preferably 2 or more. Moreover, the said ratio is preferably 20 or less, more preferably 12 or less, particularly preferably 8 or less, further preferably 4 or less. When the ratio of the amount of the photopolymerization initiator (E) to the amount of the colorant (D) is within the above range, the total light transmittance, lightness L*, etc. can be made good, and at the same time, it is easy to harden by active energy rays It is easy to obtain an adhesive with good cohesive force, adhesiveness, etc., and it is also easy to make excellent resistance to foaming.

(1-6)各種添加劑 黏著性組合物P，可根據期望添加，通常使用於丙烯酸系黏著劑的各種添加劑，例如可添加矽烷偶合劑、防銹劑、紫外線吸收劑、帶電防止劑、黏著賦予劑、氧化防止劑、光安定劑、軟化劑、折射率調整劑等。再者，後述的聚合溶劑、稀釋溶劑等等，不含有在構成黏著性組合物P的添加劑。(1-6) Various additives Adhesive composition P can be added as desired, and various additives commonly used in acrylic adhesives, such as silane coupling agents, rust inhibitors, ultraviolet absorbers, antistatic agents, adhesion imparting agents, oxidation inhibitors, light Stabilizer, softener, refractive index adjuster, etc. In addition, the polymerization solvent, the dilution solvent, and the like described later do not contain additives constituting the adhesive composition P.

黏著性組合物P，在上述之中含有矽烷偶合劑為佳。藉此，即使被黏附體為塑膠板，或即使是玻璃構件，亦可提升與該被黏附體的密著性，而在高溫高濕條件下的段差追隨性及耐起泡性更優良。The adhesive composition P preferably contains a silane coupling agent among the above. Thereby, even if the adherend is a plastic plate, or even if it is a glass member, the adhesion to the adherend can be improved, and the level difference followability and bubble resistance under high temperature and high humidity conditions are better.

作為矽烷偶合劑，以在分子內至少具有1個烷氧基矽基的有機矽化合物，而與(甲基)丙烯酸酯聚合物(A)的相溶性佳，且具有光穿透性者為佳。As a silane coupling agent, an organosilicon compound having at least one alkoxysilyl group in the molecule, which has good compatibility with (meth)acrylate polymer (A) and is preferably light-transmitting .

作為該矽烷偶合劑，可舉出例如乙烯基三甲氧基矽烷、乙烯基三乙氧基矽烷、甲基丙烯醯氧丙基三甲氧基矽烷等的含聚合性不飽和基矽化合物、3-縮水甘油醚氧(glycidoxy)丙基三甲氧基矽烷、2-(3,4-環氧環己基)乙基三甲氧基矽烷等的具有環氧結構的矽化合物、3-氫硫基(mercapto)丙基三甲氧基矽烷、3-氫硫基丙基三乙氧基矽烷、3-氫硫基丙基二甲氧基甲基矽烷等的含氫硫基矽化合物、3-胺基丙基三甲氧基矽烷、N-(2-胺基乙基)-3-胺基丙基三甲氧基矽烷、N-(2-胺基乙基)-3-胺基丙基甲基二甲氧基矽烷等的含胺基矽化合物、3-氯丙基三甲氧基矽烷、3-異氰酸酯基丙基三乙氧基矽烷、或該等的至少1種，以及與甲基三乙氧基矽烷、乙基三乙氧基矽烷、甲基三甲氧基矽烷、乙基三甲氧基矽烷等的含烷基矽化合物的縮合物等。該等，可以1種單獨使用，亦可組合2種以上使用。Examples of the silane coupling agent include polymerizable unsaturated group-containing silicon compounds such as vinyltrimethoxysilane, vinyltriethoxysilane, methacryloxypropyltrimethoxysilane, and 3-silicon Silicon compounds with epoxy structures such as glycidoxypropyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, etc., 3-mercaptopropane Thimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropyldimethoxymethylsilane and other mercapto-containing silicon compounds, 3-aminopropyltrimethoxy Silane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, etc. Amino-containing silicon compounds, 3-chloropropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, or at least one of these, and methyltriethoxysilane, ethyltriethoxysilane Condensates of alkyl-containing silicon compounds such as ethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, etc. These may be used alone or in combination of two or more.

在黏著性組合物P中的矽烷偶合劑的含量，對(甲基)丙烯酸酯聚合物(A)100質量份，以0.01質量份以上為佳，特別是以0.05質量份以上為佳，進一步以0.08質量份以上為佳。此外，該含量以1質量份以下為佳，特別是以0.5質量份以下為佳，進一步以0.3質量份以下為佳。The content of the silane coupling agent in the adhesive composition P is preferably at least 0.01 parts by mass, especially preferably at least 0.05 parts by mass, and further preferably at least 0.05 parts by mass relative to 100 parts by mass of the (meth)acrylate polymer (A). It is preferably 0.08 parts by mass or more. In addition, the content is preferably at most 1 part by mass, particularly preferably at most 0.5 part by mass, further preferably at most 0.3 part by mass.

(2)黏著劑組合物的調製 黏著性組合物P，可藉由製造(甲基)丙烯酸酯聚合物(A)，將所得(甲基)丙烯酸酯聚合物(A)、交聯劑(B)、活性能量線硬化性成分(C)、及著色劑(D)混合的同時，根據所期望加入添加劑而製造。(2) Preparation of adhesive composition Adhesive composition P can be prepared by producing (meth)acrylate polymer (A), and combining the obtained (meth)acrylate polymer (A), crosslinking agent (B), active energy ray-curing component ( C) and the coloring agent (D) are mixed, and additives are added as desired to manufacture.

(甲基)丙烯酸酯聚合物(A)，可藉由將構成聚合物的單體的混合物，以通常的自由基聚合法聚合而製造。(甲基)丙烯酸酯聚合物(A)的聚合，可根據所期望使用聚合起始劑，以溶液聚合法進行為佳。聚合溶劑，可舉出例如，醋酸乙酯、醋酸正丁酯、醋酸異丁酯、甲苯、丙酮、己烷、甲乙酮等，亦可並用2種以上。The (meth)acrylate polymer (A) can be produced by polymerizing a mixture of monomers constituting a polymer by a normal radical polymerization method. The polymerization of (meth)acrylate polymer (A) can use a polymerization initiator as desired, and it is preferable to perform it by the solution polymerization method. Examples of the polymerization solvent include ethyl acetate, n-butyl acetate, isobutyl acetate, toluene, acetone, hexane, methyl ethyl ketone, and the like, and two or more of them may be used in combination.

作為聚合開始劑，可舉出偶氮系化合物、有機過氧化物等，亦可並用2種以上。作為偶氮系化合物，例如，2,2′-偶氮雙異丁腈、2,2′-偶氮雙(2-甲基丁腈)、1,1′-偶氮雙(環己烷-1-甲腈)、2,2′-偶氮雙(2,4-二甲基戊腈)、2,2′-偶氮雙(2,4-二甲基-4-甲氧基戊腈)、二甲基-2,2′-偶氮雙(2-甲基丙酸酯)、4,4′-偶氮雙(4-氰戊酸(cyanovaleric acid))、2,2′-偶氮雙(2-羥甲基丙腈)、2,2′-偶氮雙[2-(2-咪唑啉-2-基)丙烷]等。As a polymerization initiator, an azo compound, an organic peroxide, etc. are mentioned, and 2 or more types may be used together. As azo compounds, for example, 2,2'-azobisisobutyronitrile, 2,2'-azobis(2-methylbutyronitrile), 1,1'-azobis(cyclohexane- 1-carbonitrile), 2,2′-azobis(2,4-dimethylvaleronitrile), 2,2′-azobis(2,4-dimethyl-4-methoxyvaleronitrile ), dimethyl-2,2′-azobis(2-methylpropionate), 4,4′-azobis(4-cyanovaleric acid), 2,2′-azobis Azobis(2-hydroxymethylpropionitrile), 2,2'-azobis[2-(2-imidazolin-2-yl)propane], etc.

作為有機過氧化物，可舉出例如，過氧化苯甲醯、過氧苯甲酸第三丁酯(tert-butyl perbenzoate)、異丙苯(cumene)氫過氧化物(hydroperoxide)、過氧二碳酸二異丙酯、過氧二碳酸二正丙酯、過氧二碳酸二(2-乙氧基乙酯)、過氧新癸酸第三丁酯(t‐butyl peroxyneodecanoate)、過氧異丁酸第三丁酯(t‐butyl peroxypivalate)、(3,5,5-三甲基己醯)過氧化物、過氧化二丙醯、過氧化二乙醯等。Examples of organic peroxides include benzoyl peroxide, tert-butyl perbenzoate, cumene hydroperoxide, and peroxydicarbonic acid. Diisopropyl ester, di-n-propyl peroxydicarbonate, bis(2-ethoxyethyl peroxydicarbonate), t-butyl peroxyneodecanoate, peroxyisobutyric acid t-butyl peroxypivalate, (3,5,5-trimethylhexyl) peroxide, diacryl peroxide, diacetyl peroxide, etc.

再者，在上述聚合步驟，藉由調配2-氫硫基乙醇等的鏈轉移劑，可調節所得聚合物的重量平均分子量。Furthermore, in the above-mentioned polymerization step, by preparing a chain transfer agent such as 2-mercaptoethanol, the weight average molecular weight of the obtained polymer can be adjusted.

得到(甲基)丙烯酸酯聚合物(A)，則對(甲基)丙烯酸酯聚合物(A)的溶液，添加交聯劑(B)、活性能量線硬化性成分(C)、著色劑(D)、以及根據所期望的稀釋溶劑及添加劑，藉由充分混合，得到以溶劑稀釋的黏著性組合物P(塗佈溶液)。再者，在上述各成分的任何一者，使用固體狀者的情形，或以沒有稀釋的狀態與其他的成分混合時會產生析出時，亦可將該成份預先單獨以稀釋溶劑溶解或稀釋，再與其他的成份混合。To obtain the (meth)acrylate polymer (A), then to the solution of the (meth)acrylate polymer (A), add a crosslinking agent (B), an active energy ray-curable component (C), a colorant ( D), and according to the desired dilution solvent and additives, through thorough mixing, an adhesive composition P (coating solution) diluted with a solvent is obtained. Furthermore, when any one of the above-mentioned components is used in a solid form, or when precipitation occurs when mixed with other components in an undiluted state, the component may be dissolved or diluted with a diluent solvent alone in advance, Then mix with other ingredients.

作為上述稀釋溶劑，可舉出例如，使用己烷、庚烷、環己烷等的脂肪烴，甲苯、二甲苯等的芳香烴，二氯甲烷、二氯乙烷等的鹵化烴、甲醇、乙醇、丙醇、丁醇、1-甲氧基-2-丙醇等的醇，丙酮、甲乙酮、2-戊酮、異佛爾酮、環己酮等的酮，醋酸乙酯、醋酸丁酯等的酯，乙基賽珞蘇(cellosolve)等的賽珞蘇系溶劑等。Examples of the diluting solvent include aliphatic hydrocarbons such as hexane, heptane, and cyclohexane, aromatic hydrocarbons such as toluene and xylene, halogenated hydrocarbons such as methylene chloride and ethylene dichloride, methanol, and ethanol. , propanol, butanol, 1-methoxy-2-propanol and other alcohols, acetone, methyl ethyl ketone, 2-pentanone, isophorone, cyclohexanone and other ketones, ethyl acetate, butyl acetate, etc. esters, cellosolve solvents such as ethyl cellosolve, etc.

作為如此調製的塗佈溶液的濃度·黏度，只要在可塗層(coating)的範圍即可，並無特別限制，能夠視狀況適當選定。例如，將黏著性組合物P的濃度稀釋成10~60質量%。再者，得到塗佈溶液時，稀釋溶劑等的添加並非必要條件，只要黏著性組合物P在可塗層的黏度，亦可不添加稀釋溶劑。此時，黏著性組合物P，成為將(甲基)丙烯酸酯聚合物(A)的聚合溶劑直接作為稀釋溶劑的塗佈溶液。The concentration and viscosity of the coating solution prepared in this way are not particularly limited as long as they are within the range that allows coating (coating), and can be appropriately selected depending on the situation. For example, the concentration of the adhesive composition P is diluted to 10 to 60% by mass. Furthermore, when obtaining a coating solution, the addition of a diluent solvent is not an essential requirement, and as long as the viscosity of the adhesive composition P is coatable, no diluent solvent may be added. At this time, the adhesive composition P becomes the coating solution which used the polymerization solvent of the (meth)acrylate polymer (A) as a dilution solvent as it is.

(3)黏著劑層的形成 本實施形態的黏著劑層11，較佳為由黏著性組合物P(的塗佈層)所交聯的黏著劑構成。黏著性組合物P的交聯，通常可藉由加熱處理而進行。再者，該加熱處理，可兼做使稀釋溶劑等從塗佈在所期望對象物的黏著性組合物P的塗佈層揮發時的乾燥處理。(3) Formation of adhesive layer The adhesive layer 11 of the present embodiment is preferably composed of an adhesive crosslinked with the adhesive composition P (coating layer). The crosslinking of the adhesive composition P can be generally performed by heat treatment. In addition, this heating process can also be used as a drying process at the time of volatilizing a diluent solvent etc. from the coating layer of the adhesive composition P coated on a desired object.

加熱處理的加熱溫度，以50~150℃為佳，特別是以70~120°為佳。此外，加熱時間，以10秒~10分鐘為佳，特別是以50秒~2分鐘為佳。The heating temperature of the heat treatment is preferably 50~150°C, especially 70~120°C. In addition, the heating time is preferably 10 seconds to 10 minutes, especially 50 seconds to 2 minutes.

加熱處理之後，可視需要，亦可設置以常溫(例如23℃、50%RH) 1~2週左右的熟化(curing)期間。需要該熟化期間時，在經過熟化期間之後，無需熟化期間時，在加熱處理結束之後，形成黏著劑。After the heat treatment, a curing period of about 1 to 2 weeks may be provided at normal temperature (for example, 23° C., 50% RH) if necessary. When the aging period is required, the adhesive is formed after the aging period has elapsed, and when the aging period is not required, the adhesive is formed after the heat treatment is completed.

藉由上述的加熱處理(及熟化)，經由交聯劑(B)使(甲基)丙烯酸酯聚合物(A)充分交聯。如此所得黏著劑，在高溫高濕條件下的段差追隨性優良。By the above heat treatment (and aging), the (meth)acrylate polymer (A) is fully crosslinked via the crosslinking agent (B). The adhesive thus obtained has excellent step followability under high temperature and high humidity conditions.

(4)黏著劑的物性 本實施形態的黏著劑的凝膠分率，作為下限值以20%以上為佳，以30%以上為更佳，以40%以上為特佳，進一步以45%以上為佳。黏著劑的凝膠分率的下限值在上述的話，則黏著劑的凝聚力會變高，而在高溫高濕條件下的段差追隨性更優良。此外，關於本實施形態的黏著劑的凝膠分率，作為上限值以90%以下為佳，以80%以下為更佳，以70%以下為特佳，進一步以60%以下為佳。黏著劑的凝膠分率的上限值在上述的話，則黏著劑不會過度硬化，而在初期段差追隨性及耐久後的段差追隨性均優良。此外，可顯現良好的黏著力，與被黏附體的接著性更優良。在此，黏著劑的凝膠分率的測定方法，係如後述的試驗例所示。(4) Physical properties of the adhesive The lower limit of the gel fraction of the adhesive in this embodiment is preferably 20% or more, more preferably 30% or more, particularly preferably 40% or more, and further preferably 45% or more. When the lower limit of the gel fraction of the adhesive is as described above, the cohesive force of the adhesive becomes higher, and the step followability under high-temperature and high-humidity conditions becomes better. In addition, the upper limit of the gel fraction of the adhesive of this embodiment is preferably 90% or less, more preferably 80% or less, particularly preferably 70% or less, and further preferably 60% or less. When the upper limit of the gel fraction of the adhesive is as described above, the adhesive does not harden excessively, and both the initial step followability and the step followability after durability are excellent. In addition, good adhesive force can be exhibited, and the adhesiveness with an adherend is more excellent. Here, the method of measuring the gel fraction of the adhesive is as shown in the test example described later.

(5)黏著劑層的厚度 關於本實施形態的黏著片1的黏著劑層11的厚度(Zμm)，滿足上述的X×Z的式(I)之值為佳。(5) The thickness of the adhesive layer Regarding the thickness (Z μm) of the adhesive layer 11 of the adhesive sheet 1 of the present embodiment, a value satisfying the above-mentioned formula (I) of X×Z is preferable.

黏著劑層11的厚度，具體而言，作為下限值以25μm以上為佳，以40μm以上為更佳。黏著劑層11的厚度的下限值在上述，則在與著色劑(D)含量的關係，容易滿足上述全光線穿透率及明度L*(甚至是色度a*及b*、以及霧度值)，此外容易發揮所期望的黏著力。此外，從容易發揮優良的段差追隨性及耐起泡性的觀點而言，作為下限值以50μm以上為佳，以75μm以上為更佳，以100μm以上為特佳，進一步以120μm以上為佳。Specifically, the lower limit of the thickness of the adhesive layer 11 is preferably 25 μm or more, more preferably 40 μm or more. If the lower limit of the thickness of the adhesive layer 11 is as above, it is easy to satisfy the above-mentioned total light transmittance and lightness L* (even chroma a* and b*, and fog) in relation to the content of the coloring agent (D). Degree value), in addition, it is easy to exert the desired adhesion. In addition, from the viewpoint of easily exhibiting excellent step followability and anti-foaming property, the lower limit value is preferably at least 50 μm, more preferably at least 75 μm, particularly preferably at least 100 μm, and further preferably at least 120 μm. .

此外，黏著劑層11的厚度，作為上限值以1000μm以下為佳，以500μm以下為更佳，以是300μm以下為特佳，進一步以250μm以下為佳。黏著劑層11的厚度的上限值在上述，則加工性良好。此外，變得不容易發生由壓痕等的外觀異常。再者，在與著色劑(D)含量的關係，容易滿足上述全光線穿透率及明度L*(甚至是色度a*及b*、以及霧度值)。再者，黏著劑層11，可以單層形成，亦可層積複數層而形成。In addition, the upper limit of the thickness of the adhesive layer 11 is preferably 1000 μm or less, more preferably 500 μm or less, particularly preferably 300 μm or less, further preferably 250 μm or less. When the upper limit value of the thickness of the adhesive layer 11 is the above, workability is favorable. In addition, abnormal appearance due to indentation or the like becomes less likely to occur. Furthermore, in relation to the content of the coloring agent (D), it is easy to satisfy the above-mentioned total light transmittance and lightness L* (even chroma a* and b*, and haze value). In addition, the adhesive layer 11 may be formed as a single layer, or may be formed by laminating a plurality of layers.

1-2. 剝離片 剝離片12a、12b，係用於保護黏著劑層11到使用黏著片1時，在使用黏著片1（黏著劑層11）時會被剝離。在關於本實施形態的黏著片1，剝離片12a、12b的一方或雙方，並非都是必要。1-2. Peeling sheet The release sheets 12a and 12b are used to protect the adhesive layer 11 until the adhesive sheet 1 is used, and will be peeled off when the adhesive sheet 1 (adhesive layer 11 ) is used. Regarding the adhesive sheet 1 of this embodiment, one or both of the release sheets 12a and 12b are not necessarily required.

作為剝離片12a、12b，可使用例如聚乙烯薄膜、聚丙烯薄膜、聚丁烯薄膜、聚丁二烯薄膜、聚甲基戊烯薄膜、聚氯乙烯薄膜、氯乙烯共聚物薄膜、聚對苯二甲酸乙二醇酯薄膜、聚萘二甲酸乙二醇酯薄膜、聚對苯二甲酸丁二醇酯薄膜、聚氨酯薄膜、乙烯-醋酸乙烯酯薄膜、離聚物(ionomer)樹脂薄膜、乙烯‧(甲基)丙烯酸共聚物薄膜、乙烯‧(甲基)丙烯酸酯共聚合物薄膜、聚苯乙烯薄膜、聚碳酸酯薄膜、聚醯亞胺薄膜、氟化樹脂薄膜等。此外，可使用該等的交聯薄膜。進一步，亦可為該等的層積薄膜。As the release sheets 12a, 12b, for example, polyethylene film, polypropylene film, polybutene film, polybutadiene film, polymethylpentene film, polyvinyl chloride film, vinyl chloride copolymer film, polyparaphenylene film, etc. Ethylene glycol diformate film, polyethylene naphthalate film, polybutylene terephthalate film, polyurethane film, ethylene-vinyl acetate film, ionomer resin film, ethylene‧ (Meth)acrylic copolymer film, ethylene‧(meth)acrylate copolymer film, polystyrene film, polycarbonate film, polyimide film, fluorinated resin film, etc. In addition, crosslinked films of these can be used. Furthermore, these laminated films may also be used.

上述剝離片12a，12b的剝離面(特別是接於黏著劑層11的面)施以剝離處理為佳。作為用於剝離處理的剝離劑，可舉例如，醇酸(alkyd)系、矽酮系、氟系、不飽和聚酯系、聚烯烴系、蠟系的剝離劑。再者，剝離片12a、12b之中，使一方的剝離片作成剝離力大的重剝離型剝離片，使另一方的剝離片作成剝離力小的輕剝離型剝離片為佳。It is preferable that the release surface (particularly the surface attached to the adhesive layer 11) of the release sheet 12a, 12b is subjected to a release treatment. Examples of the release agent used in the release treatment include alkyd-based, silicone-based, fluorine-based, unsaturated polyester-based, polyolefin-based, and wax-based release agents. Furthermore, among the release sheets 12a, 12b, it is preferable to make one release sheet a heavy release type release sheet with a large release force, and make the other release sheet a light release type release sheet with a small release force.

關於剝離片12a、12b的厚度，並無特別限制，通常為20~150μm左右。The thickness of the release sheets 12a and 12b is not particularly limited, but is usually about 20 to 150 μm.

2. 黏著片的製造 作為黏著片1的一製造例，在一方的剝離片12a(或12b)的剝離面，塗佈上述黏著性組合物P的塗佈溶液，進行加熱處理使黏著性組合物P熱交聯，形成塗佈層之後，使另一方的剝離片12b(或12a)的剝離面與該塗佈層疊合。需要熟化期間時設置熟化期間，無需熟化期間時，則上述塗佈層直接成為黏著劑層11。藉此，可得上述黏著片1。關於加熱處理及熟化的條件，依如上所述。2. Fabrication of Adhesive Sheets As a manufacturing example of the adhesive sheet 1, the coating solution of the above-mentioned adhesive composition P is coated on the release surface of one release sheet 12a (or 12b), and heat treatment is performed to thermally crosslink the adhesive composition P to form After coating the layer, the release surface of the other release sheet 12b (or 12a) is laminated on the coating layer. A curing period is provided if a curing period is required, and if a curing period is not required, the above-mentioned coating layer directly becomes the adhesive layer 11 . Thereby, the above-mentioned adhesive sheet 1 can be obtained. The conditions for heat treatment and aging are as described above.

作為黏著片1之其他的製造例，係在一方的剝離片12a的剝離面，塗佈上述黏著性組合物P的塗佈溶液，進行加熱處理使黏著性組合物P熱交聯，形成塗佈層，得到附有塗佈層的剝離片12a。此外，在另一方的剝離片12b的剝離面，塗佈上述黏著性組合物P的塗佈溶液，進行加熱處理使黏著性組合物P熱交聯，形成塗佈層，得到附有塗佈層的剝離片12b。然後，使附有塗佈層的剝離片12a與附有塗佈層的剝離片12b，以兩塗佈層互相接觸地黏合。在此，製作複數個附有塗佈層的剝離片，可黏合所期望數量的該塗佈層。需要熟化期間時設置熟化期間，無須熟化期間，則上述塗佈層直接成為黏著劑層11。藉此，可得上述黏著片1。根據該製造例，即使黏著劑層11較厚時，亦可以穩定地製造。As another production example of the adhesive sheet 1, the coating solution of the above-mentioned adhesive composition P is applied to the release surface of one release sheet 12a, and heat treatment is performed to thermally crosslink the adhesive composition P to form a coating. layer to obtain a release sheet 12a with a coating layer attached. In addition, on the release surface of the other release sheet 12b, the coating solution of the above-mentioned adhesive composition P is coated, and heat treatment is performed to thermally crosslink the adhesive composition P to form a coating layer to obtain an attached coating layer. The release sheet 12b. Then, the coating-layer-attached release sheet 12a and the coated-layer-attached release sheet 12b are bonded so that both coating layers are in contact with each other. Here, a plurality of release sheets with coating layers are produced, and a desired number of the coating layers can be adhered. A curing period is provided when a curing period is required, and the above-mentioned coating layer becomes the adhesive layer 11 directly without a curing period. Thereby, the above-mentioned adhesive sheet 1 can be obtained. According to this production example, even when the adhesive layer 11 is thick, it can be stably produced.

作為塗佈上述黏著性組合物P的塗佈溶液的方法，可利用例如，棒(bar)塗佈法、刮刀(knife)塗佈法、輥(roll)塗佈法、刮板(blade)塗佈法、模具(die)塗佈法、凹版(gravure)塗佈法等。As a method of applying the coating solution of the above-mentioned adhesive composition P, for example, a bar coating method, a knife coating method, a roll coating method, a blade coating method, etc. can be utilized. Fabric method, die coating method, gravure coating method, etc.

［顯示體］ 作為關於本實施形態的顯示體(顯示器)的種類，可舉出例如汽車的儀表板、汽車導航系統、設在控制台的各種儀表等的車載用的顯示體，一般用戶用的平板終端機等的顯示體、商業用的平板終端機、數位看板等的顯示體、室外用數位看板等的顯示體。該等顯示體，有時被要求與周邊構件的外觀協調性、或高級感等。惟關於本發明的顯示體，不應限定於該等。[display body] As the type of display (display) related to this embodiment, for example, car dashboards, car navigation systems, and various instruments installed on consoles, etc., vehicle-mounted displays, tablet terminals for general users, etc. display body, tablet terminal for commercial use, display body such as digital signage, display body such as digital signage for outdoor use. Such displays are sometimes required to have an appearance compatible with peripheral members, a sense of luxury, and the like. However, the display body of the present invention should not be limited to these.

如圖2所示，關於本實施形態的顯示體2，其構成包括：第1顯示體構成構件21(一顯示體構成構件)；第2顯示體構成構件22(其他的顯示體構成構件)；及硬化後黏著劑層11'，其係位於該等之間，互相黏合第1顯示體構成構件21及第2顯示體構成構件22。As shown in Figure 2, regarding the display body 2 of the present embodiment, its composition includes: a first display body constituent member 21 (a display body constituent member); a second display body constituent member 22 (other display body constituent members); And the cured adhesive layer 11' is located between them, and the first display body constituent member 21 and the second display body constituent member 22 are bonded to each other.

第1顯示體構成構件21及第2顯示體構成構件22的至少一方，至少在藉由硬化後黏著劑層11'黏合側的面，亦可具有段差。在圖2所示本實施形態中，第1顯示體構成構件21，在硬化後黏著劑層11'側的面，具有印刷層3等的段差。At least one of the first display constituting member 21 and the second display constituting member 22 may have a level difference at least on the surface on the side bonded by the adhesive layer 11 ′ after curing. In the present embodiment shown in FIG. 2 , the first display constituting member 21 has steps such as the printed layer 3 on the surface on the side of the adhesive layer 11' after curing.

在上述顯示體2的硬化後黏著劑層11'，係將上述黏著片1的黏著劑層11，藉由活性能量線照射而硬化者。構成該硬化後黏著劑層11'的硬化後黏著劑，在黏著劑層11的形成使用黏著性組合物P時，具有從(甲基)丙烯酸酯聚合物(A)與交聯劑(D)構成的交聯結構，同時含有活性能量線硬化性成分(C)的硬化物(聚合物)，根據情形，進一步含有光聚合起始劑(E)及添加劑。活性能量線硬化性成分(C)，可推測使聚合網狀形成某種程度粗的三維網狀結構，同時纏繞上述交聯結構，形成高維結構。藉由該構造，可發揮優良的耐起泡性。The cured adhesive layer 11' of the above-mentioned display body 2 is one in which the adhesive layer 11 of the above-mentioned adhesive sheet 1 is cured by irradiation of active energy rays. When the cured adhesive constituting the cured adhesive layer 11' is used for the formation of the adhesive layer 11, the adhesive composition P has The formed cross-linked structure contains the cured product (polymer) of the active energy ray-curable component (C) and, depending on the case, further contains a photopolymerization initiator (E) and additives. The active energy ray-curing component (C) is presumed to form a polymer network into a somewhat thick three-dimensional network structure, and at the same time entangle the above-mentioned cross-linked structure to form a high-dimensional structure. With this structure, excellent anti-foaming properties can be exhibited.

再者，包含在構成上述硬化後黏著劑層11'的硬化後黏著劑的光聚合起始劑(E)，係包含在黏著性組合物P的光聚合起始劑(E)，即使被活性能量線照射亦未裂解而殘存者。因此，其含量並不多，通常在黏著劑中為0.00001質量%以上且0.1質量%以下，以0.0001質量%以上且0.01質量%以下為佳。Furthermore, the photopolymerization initiator (E) contained in the cured adhesive constituting the above-mentioned cured adhesive layer 11' is the photopolymerization initiator (E) contained in the adhesive composition P, even if activated Energy ray irradiation is not cleaved and remains. Therefore, its content is not much, and it is usually not less than 0.00001% by mass and not more than 0.1% by mass in the adhesive, preferably not less than 0.0001% by mass and not more than 0.01% by mass.

硬化後黏著劑層11'的厚度，基本上與黏著片1的黏著劑層11的厚度相同。The thickness of the adhesive layer 11 ′ after hardening is basically the same as the thickness of the adhesive layer 11 of the adhesive sheet 1 .

構成硬化後黏著劑層11'的硬化後黏著劑的凝膠分率，作為下限值以55%以上為佳，以60%以上為更佳，以65%以上為特佳，進一步以67%以上為佳。硬化後黏著劑的凝膠分率的下限值在上述，則硬化後黏著劑層11'的耐起泡性更優良。此外，硬化後黏著劑的凝膠分率，作為上限值，以95%以下為佳，以90%以下為更佳，以80%以下為特佳，進一步以74%以下為佳。硬化後黏著劑的凝膠分率的上限值在上述的話，則硬化後黏著劑層11'的黏著力，甚至是在高溫高濕條件下的段差追隨性及耐起泡性更優良。該硬化後黏著劑的凝膠分率的測定方法，係如後述的試驗例所示。The lower limit of the gel fraction of the cured adhesive constituting the cured adhesive layer 11' is preferably at least 55%, more preferably at least 60%, particularly preferably at least 65%, and further preferably at least 67%. The above is preferred. When the lower limit value of the gel fraction of the hardened adhesive is as above, the foaming resistance of the hardened adhesive layer 11 ′ is more excellent. In addition, the upper limit of the gel fraction of the adhesive after hardening is preferably 95% or less, more preferably 90% or less, particularly preferably 80% or less, and further preferably 74% or less. When the upper limit of the gel fraction of the cured adhesive is as above, the adhesive force of the cured adhesive layer 11 ′, step followability and anti-foaming property even under high temperature and high humidity conditions are better. The method of measuring the gel fraction of the adhesive after hardening is as shown in the test example described later.

硬化後黏著劑層11'對鈉鈣玻璃(soda-lime glass)的黏著力，作為下限值以10N/25mm以下為佳，以20N/25mm以上為佳，以30N/25mm以上更佳，以40N/25mm以上為特佳，以50N/25mm以上更為佳。黏著力的下限值在上述的話，則在高溫高濕條件下的段差追隨性及耐起泡性更優良。此外，上述黏著力的上限值，並無特別限定，以100N/25mm以下為佳，以80N/25mm以下為更佳，以60N/25mm以下為特佳。After hardening, the adhesive force of the adhesive layer 11 ′ to soda-lime glass is preferably lower than 10N/25mm, preferably greater than 20N/25mm, and more preferably greater than 30N/25mm. More than 40N/25mm is especially good, more preferably 50N/25mm or more. When the lower limit of the adhesive force is as described above, the step followability and anti-foaming property under high temperature and high humidity conditions are more excellent. In addition, the upper limit of the above-mentioned adhesive force is not particularly limited, but it is preferably not more than 100 N/25 mm, more preferably not more than 80 N/25 mm, and most preferably not more than 60 N/25 mm.

在此，本說明書的黏著力，基本上係指遵照JIS Z0237：2009之180°拉剝法所測定的黏著力，惟測定樣品為寬25mm、長100mm，將該測定樣品黏貼在被黏附體，以0.5MPa，50℃加壓20分鐘之後，以常壓，23℃，50%RH的條件下放置24小時之後，以剝離速度300mm/min測定。Here, the adhesive force in this specification basically refers to the adhesive force measured in accordance with the 180° peeling method of JIS Z0237:2009, but the measured sample is 25mm wide and 100mm long, and the measured sample is pasted on the adherend. After pressurizing at 0.5 MPa at 50°C for 20 minutes, and then standing at normal pressure at 23°C and 50%RH for 24 hours, it was measured at a peeling speed of 300mm/min.

作為顯示體2，可舉出例如液晶(LCD)顯示器、發光二極體(LED)顯示器、有機電致發光(organic light-emitting diode)(有機EL)顯示器、電子紙等，亦可為觸控面板(touch panel)。As the display 2, for example, a liquid crystal (LCD) display, a light emitting diode (LED) display, an organic light-emitting diode (organic EL) display, an electronic paper, etc. can be mentioned, and it can also be a touch screen. Panel (touch panel).

第1顯示體構成構件21，以玻璃板、塑膠板等之外，以含有該等的層積體等所構成的保護面板為佳，特別是以塑膠板或包含塑膠板的層積體等所構成的保護面板為佳。此時，印刷層3一般在第1顯示體構成構件21的硬化後黏著劑層11'側形成畫框狀。The first display constituting member 21 is preferably a protective panel made of a glass plate, a plastic plate, or a laminate containing these, especially a plastic plate or a laminate including a plastic plate. It is preferable to form a protective panel. At this time, the printed layer 3 is generally formed into a picture frame shape on the side of the cured adhesive layer 11 ′ of the first display constituent member 21 .

上述玻璃板，並無特別限定，可舉出例如，化學強化玻璃、無鹼玻璃、石英玻璃、鈉鈣玻璃、含有鋇鍶的玻璃、鋁矽酸玻璃、鉛玻璃、硼矽酸玻璃、鋇硼矽酸玻璃等。玻璃板的厚度，並無特別限定，通常為0.1~5mm，以0.2~2mm為佳。The above-mentioned glass plate is not particularly limited, and examples thereof include chemically strengthened glass, alkali-free glass, quartz glass, soda lime glass, glass containing barium strontium, aluminosilicate glass, lead glass, borosilicate glass, barium boron Silicate glass, etc. The thickness of the glass plate is not particularly limited, and is usually 0.1-5 mm, preferably 0.2-2 mm.

塑膠板，通常在高溫條件下，例如放置在85℃的條件下時，有內部的低沸點成分氣化，在塑膠板與硬化後黏著劑層11'的界面，產生氣泡、浮起、剝落等的起泡之虞。但是關於本實施形態的顯示體2，即使包含如此的塑膠板，在黏著劑層11的形成使用黏著性組合物P時，可藉由硬化後黏著劑層11'良好地抑制發生起泡。Generally, when the plastic sheet is placed under high temperature conditions, such as 85°C, the internal low-boiling point components will vaporize, and bubbles, floating, peeling, etc. will occur at the interface between the plastic sheet and the hardened adhesive layer 11' risk of blistering. However, even if the display body 2 of the present embodiment includes such a plastic sheet, when the adhesive composition P is used to form the adhesive layer 11, the occurrence of foaming can be well suppressed by the adhesive layer 11' after curing.

作為塑膠板，並無特別限定，可舉出例如聚碳酸酯樹脂(PC)板、聚甲基丙烯酸甲酯樹脂(PMMA)板等的丙烯酸樹脂板、對聚碳酸酯板層積聚甲基丙烯酸甲酯樹脂層等的丙烯酸樹脂層的塑膠板等。再者，上述聚碳酸酯樹脂板，作為其構成的材料，亦可含有聚碳酸酯樹脂以外的樹脂，此外，上述丙烯酸樹脂板，作為其構成材料，亦可含有丙烯酸樹脂以外的樹脂。再者，該塑膠板，亦可具有紫外線吸收劑。The plastic sheet is not particularly limited, and examples thereof include acrylic resin sheets such as polycarbonate resin (PC) sheets and polymethyl methacrylate resin (PMMA) sheets, and polymethyl methacrylate sheets deposited on polycarbonate sheets. Plastic sheets with acrylic resin layers such as ester resin layers, etc. Furthermore, the polycarbonate resin plate may contain resins other than polycarbonate resin as its constituent material, and the acrylic resin plate may contain resin other than acrylic resin as its constituent material. Furthermore, the plastic board may also have an ultraviolet absorber.

塑膠板的厚度，並無特別限定，通常為0.2~5mm，較佳為0.4~3mm，特別佳的是0.6~2.5mm，為更佳的是1~2.1mm。The thickness of the plastic plate is not particularly limited, and is usually 0.2-5 mm, preferably 0.4-3 mm, particularly preferably 0.6-2.5 mm, and more preferably 1-2.1 mm.

在上述玻璃板、塑膠板的一面或兩面，亦可設置各種功能層(透明導電膜、金屬層、二氧化矽層、硬塗層、防眩層等)，亦可層積光學構件。此外，亦可圖案化透明導電膜及金屬層。Various functional layers (transparent conductive film, metal layer, silicon dioxide layer, hard coat layer, anti-glare layer, etc.) can also be provided on one or both sides of the above-mentioned glass plate and plastic plate, and optical components can also be laminated. In addition, the transparent conductive film and the metal layer can also be patterned.

第2顯示體構成構件22，以作為應該貼在第1顯示體構成構件21的光學構件、顯示體模組(例如，液晶(LCD)模組、發光二極體(LED)模組、有機電致發光(有機EL)模組等)為佳，包含作為顯示體模組的一部分的光學構件，或顯示體模組的層積體為佳。The second display component 22 is used as an optical component that should be attached to the first display component 21, a display module (for example, a liquid crystal (LCD) module, a light emitting diode (LED) module, an organic Luminescence (organic EL) module, etc.) is preferable, and it is preferable to include an optical member as a part of the display module, or a laminated body of the display module.

作為上述光學構件，可舉出例如，例如飛散防止薄膜、偏光板(偏光薄膜)，偏光鏡(polarizer)、相位差板(相位差薄膜)、視野角補償薄膜、亮度提升薄膜、對比提升(contrast improvement)薄膜、液晶聚合物薄膜、擴散薄膜、半穿透反射薄膜、透明導電性薄膜等。作為飛散防止薄膜，可例示在基材薄膜的一面形成硬塗層而成的硬塗層薄膜等。As the above-mentioned optical member, for example, anti-scattering film, polarizing plate (polarizing film), polarizer (polarizer), phase difference plate (retardation film), viewing angle compensation film, brightness enhancement film, contrast enhancement (contrast improvement) film, liquid crystal polymer film, diffusion film, transflective film, transparent conductive film, etc. As the anti-scattering film, a hard coat film formed by forming a hard coat layer on one surface of a base film, etc. can be exemplified.

構成印刷層3的材料，無特別限定，可使用印刷用的習知材料。印刷層3的厚度，即段差的高度的下限值，以3μm以上為佳，以5μm以上為更佳，以7μm以上為特佳，以10μm以上最佳。藉由使下限值在上述以上，能夠充分確保從視認者側無法看到電路配線(electrical wiring)等的隱蔽性。此外，上限值以50μm以下為佳，以35μm以下為更佳，以25μm以下為特佳，進一步以20μm以下為佳。藉由使上限值在上述以下，可防止硬化後黏著劑層11'對該印刷層3的段差追隨性的惡化。The material constituting the printing layer 3 is not particularly limited, and known materials for printing can be used. The thickness of the printing layer 3 , that is, the lower limit of the step height, is preferably at least 3 μm, more preferably at least 5 μm, particularly preferably at least 7 μm, most preferably at least 10 μm. By making the lower limit more than the above, it is possible to sufficiently ensure concealment such as electrical wiring (electrical wiring) cannot be seen from the viewer side. In addition, the upper limit value is preferably at most 50 μm, more preferably at most 35 μm, particularly preferably at most 25 μm, and further preferably at most 20 μm. By making the upper limit below the above, it is possible to prevent deterioration of the step followability of the adhesive layer 11 ′ to the printed layer 3 after curing.

要製造上述顯示體2，作為一個例子，將黏著片1的一方的剝離片12a剝離，將黏著片1的露出的黏著劑層11，與第1顯示體構成構件21存在有印刷層3側的面黏合。To manufacture the above-mentioned display body 2, as an example, one of the release sheets 12a of the adhesive sheet 1 is peeled off, and the exposed adhesive layer 11 of the adhesive sheet 1 and the side of the first display body constituent member 21 where the printed layer 3 exists are separated. Surface bonding.

接著，從黏著片1的黏著劑層11，將另一方的剝離片12b剝離，將黏著片1的露出的黏著劑層11與第2顯示體構成構件22黏合得到層積體。此外，作為其他的例子，亦可將第1顯示體構成構件21及第2顯示體構成構件22的黏合順序交換。Next, the other release sheet 12b is peeled off from the adhesive layer 11 of the adhesive sheet 1, and the exposed adhesive layer 11 of the adhesive sheet 1 is bonded to the second display constituent member 22 to obtain a laminate. In addition, as another example, the bonding order of the first display constituent member 21 and the second display constituent member 22 may be exchanged.

之後，對上述層積體的黏著劑層11照射活性能量線。藉此，聚合黏著劑層11中的能量線硬化性成分(C)，使黏著劑層11硬化成硬化後黏著劑層11’。對於黏著劑層11的能量線照射，通常，隔著第1顯示體構成構件21或第2顯示體構成構件22的任何一方進行，較佳為隔著作為保護面板的第1顯示體構成構件21進行。Thereafter, active energy rays are irradiated to the adhesive layer 11 of the above-mentioned laminate. Thereby, the energy ray-curable component (C) in the adhesive layer 11 is polymerized, and the adhesive layer 11 is cured into a cured adhesive layer 11'. The energy ray irradiation of the adhesive layer 11 is usually carried out through either the first display body constituent member 21 or the second display body constituent member 22, preferably through the first display body constituent member 21 as a protective panel. conduct.

在此，所謂活性能量線，係指在電磁波或電荷粒子線之中具有能量量子，具體而言，可舉出紫外線、電子線等。活性能量線之中，以容易操作的紫外線特別佳。Here, the term "active energy rays" refers to electromagnetic waves or charged particle rays having energy quanta, and specific examples include ultraviolet rays, electron rays, and the like. Among active energy rays, ultraviolet rays, which are easy to handle, are particularly good.

紫外線的照射，可藉由高壓水銀燈、Fusion H燈、氙氣燈等進行，紫外線的照射量，以照度50~1000mW/cm2 左右為佳，以100~500mW/cm2 左右為佳。此外，光量以50~10000mJ/cm2 為佳，以200~7000mJ/cm2 為更佳，以500~3000mJ/cm2 為特佳。另一方面，電子線的照射，可藉由電子線加速器等進行，電子線的照射量，以10~1000krad左右為佳。Ultraviolet radiation can be carried out by high-pressure mercury lamps, Fusion H lamps, xenon lamps, etc. The amount of ultraviolet radiation is preferably about 50~1000mW/cm 2 , preferably about 100~500mW/cm 2 . In addition, the amount of light is preferably 50-10000mJ/cm 2 , more preferably 200-7000mJ/cm 2 , and particularly preferably 500-3000mJ/cm 2 . On the other hand, irradiation with electron beams can be performed by an electron beam accelerator, etc., and the irradiation dose of electron beams is preferably about 10 to 1000 krad.

如圖3所示，關於本實施形態的顯示體2，在該顯示體2的周緣部具有框材4為佳。該框材4以黑色為佳。此外，作為框材4的色調，以CIE1976L*a*b*表色系所規定的明度L*、色度a*及色度b*的較佳的範圍，係如先前所述作為周邊構件的色調。框材4，藉由具有該色調，容易被人眼辨識為視覺上具有高級感的框材。此外，在本實施形態的硬化後黏著劑層11'，藉由框材4具有上述色調，增加與該框材4的一體感，而使協調性更好。As shown in FIG. 3 , it is preferable that the display body 2 according to the present embodiment has a frame material 4 on the periphery of the display body 2 . The frame material 4 is preferably black. In addition, as the color tone of the frame material 4, the preferable ranges of lightness L*, chroma a* and chroma b* stipulated by the CIE1976L*a*b* color system are as described above for peripheral components. tone. The frame material 4 is easily recognized by human eyes as a visually high-quality frame material by having this color tone. In addition, in the cured adhesive layer 11 ′ of this embodiment, since the frame material 4 has the above-mentioned color tone, the sense of unity with the frame material 4 is increased, and the coordination is improved.

在上述顯示體2，藉由繼承上述黏著劑層11'的物性(全光線穿透率、明度L*等)的硬化後黏著劑層11'，賦予與黑色框材4的一體感，而具有優良的外觀協調性。此外，上述顯示體2，確保了作為顯示體的視認性。In the above-mentioned display body 2, the hardened adhesive layer 11' which inherits the physical properties (total light transmittance, lightness L*, etc.) of the above-mentioned adhesive layer 11' imparts a sense of unity with the black frame material 4, and has Excellent appearance coordination. In addition, the above-mentioned display body 2 ensures visibility as a display body.

再者，在上述顯示體2，黏著劑層11係由黏著劑組合物P形成時，由於硬化後黏著劑層11'在高溫高濕條件下的段差追隨性優良，故即使顯示體2被放置在例如高溫高濕條件下(例如85℃，85%RH)時，亦可抑制在段差附近發生氣泡、浮起、剝落等。Furthermore, in the above-mentioned display body 2, when the adhesive layer 11 is formed of the adhesive composition P, since the hardened adhesive layer 11' has excellent step followability under high-temperature and high-humidity conditions, even if the display body 2 is placed For example, under high-temperature and high-humidity conditions (such as 85°C, 85%RH), it can also suppress the occurrence of air bubbles, floating, and peeling near the level difference.

此外，在上述顯示體2，黏著劑層11係由黏著劑組合物P形成時，由於硬化後黏著劑層11'在耐起泡性優良，故即使顯示體2被放置在例如高溫高濕條件下(例如85℃，85%RH)，而從第1顯示體構成構件21及/或第2顯示體構成構件22發生排氣(outgas)時，可抑制在硬化後黏著劑層11’與顯示體構成構件21、22的界面發生氣泡、浮起、剝落等起泡。In addition, in the above-mentioned display body 2, when the adhesive layer 11 is formed of the adhesive composition P, since the adhesive layer 11' is excellent in anti-foaming after hardening, even if the display body 2 is placed under high-temperature and high-humidity conditions, for example, Under low temperature (for example, 85°C, 85%RH), when the outgassing (outgas) occurs from the first display constituent member 21 and/or the second display constituent member 22, it is possible to suppress the contact between the adhesive layer 11' and the display after hardening. Bubbles, such as bubbles, floating, and peeling, occur at the interface of the body constituting members 21 and 22 .

以上所說明的實施形態，係為容易理解本發明所記載，而並非用於限定本發明而記載。因此，揭示於上述實施形態的各要素，係含有屬於本發明的技術範圍的全部設計變更、均等物等在內的主旨。The embodiments described above are described for easy understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above-mentioned embodiments includes all design changes, equivalents, and the like belonging to the technical scope of the present invention.

例如，在黏著片1的剝離片12a、12b的任意一方或兩方可被省略。此外，亦可取代剝離片12a及/或12b層積所期望的光學構件。此外，第1顯示體構成構件21，亦可沒有段差。再者，不只是第1顯示體構成構件21，第2顯示體構成構件22，亦可在硬化後黏著劑層11’側具有段差。 [實施例]For example, either one or both of the peeling sheets 12a and 12b of the adhesive sheet 1 may be omitted. Moreover, a desired optical member may be laminated|stacked instead of the peeling sheet 12a and/or 12b. In addition, the first display constituting member 21 may not have a step. Furthermore, not only the first display constituting member 21 but also the second display constituting member 22 may have a step on the adhesive layer 11' side after curing. [Example]

以下，將本發明以實施例等更具體地說明，惟本發明的範圍並非限定於該等實施例等。Hereinafter, although an Example etc. demonstrate this invention more concretely, the scope of the present invention is not limited to these Examples etc.

(實施例1) 1. (甲基)丙烯酸酯聚合物的調製 使65質量份丙烯酸2-乙基己酯、10質量份丙烯酸異莰酯、10質量份N-(甲基)丙烯醯嗎啉、及15質量丙烯酸2-羥基乙酯，藉由溶液聚合法使之共聚合，調製(甲基)丙烯酸酯聚合物(A)。將該(甲基)丙烯酸酯聚合物(A)的分子量，以後述方法測定時，重量平均分子量(Mw)為50萬。(Example 1) 1. Modulation of (meth)acrylate polymers 65 parts by mass of 2-ethylhexyl acrylate, 10 parts by mass of isocamphoryl acrylate, 10 parts by mass of N-(meth)acrylmorpholine, and 15 parts by mass of 2-hydroxyethyl acrylate were made by solution polymerization Copolymerization to prepare (meth)acrylate polymer (A). When the molecular weight of this (meth)acrylate polymer (A) is measured by the method mentioned later, a weight average molecular weight (Mw) is 500,000.

2. 黏著性組合物的調製 將100質量份(以固體分(solid content)換算值；以下相同)，以上述步驟1所得的(甲基)丙烯酸酯聚合物(A)、0.2質量份作為交聯劑(B) 的三羥甲基丙烷改質甲苯二異氰酸酯(TOYO CHEM公司製，產品名「BHS8515」)、5.0質量份作為活性能量線硬化性成分(C)的ε-己內酯改質參(2-丙烯醯氧乙基)三聚異氰酸酯(C1︰新中村化學公司製，產品名「NK Ester A-9300-1CL」)、0.08質量份作為著色劑(D)的碳黑系黑色顏料(TOYO COLOR公司製，「Multilac Black」)、0.5質量份作為光聚合起始劑(E)的1-羥基環己基苯酮及二苯甲酮的質量比1︰1的混合品(E1)，0.1質量份作為矽烷偶合劑的3-縮水甘油醚氧丙基三甲氧基矽烷混合，充分攪拌，藉由以甲乙酮稀釋，得到黏著性組合物的塗佈溶液。2. Preparation of Adhesive Composition 100 parts by mass (in terms of solid content; the same below), the (meth)acrylate polymer (A) obtained in the above step 1, 0.2 parts by mass of trihydroxy Methylpropane-modified toluene diisocyanate (manufactured by TOYO CHEM, product name "BHS8515"), 5.0 parts by mass of ε-caprolactone-modified ginseng (2-acryloxyethyl Base) Trimeric isocyanate (C1: manufactured by Shin-Nakamura Chemical Co., Ltd., product name "NK Ester A-9300-1CL"), 0.08 parts by mass of carbon black-based black pigment (manufactured by TOYO COLOR, "Multilac Black"), 0.5 parts by mass of a mixture (E1) of 1-hydroxycyclohexyl phenone and benzophenone in a mass ratio of 1:1 as a photopolymerization initiator (E), 0.1 parts by mass as a silane coupling agent 3-Glycidyloxypropyltrimethoxysilane was mixed, fully stirred, and diluted with methyl ethyl ketone to obtain a coating solution of an adhesive composition.

在此，將以(甲基)丙烯酸酯聚合物(A)為100質量份(固體分換算值)時的黏著性組合物的各組成(固體分換算值)示於表1。此外，算出光聚合起始劑(E)的量相對於著色劑(D)的量的質量比(光聚合起始劑(E)/著色劑(D))，示於表1。再者，表1所記載的簡號等的詳細表示如下。 [(甲基)丙烯酸酯聚合物(A)] 2EHA：丙烯酸2-乙基己酯 IBXA︰丙烯酸異莰酯 ACMO︰N-丙烯醯嗎啉 HEA︰丙烯酸2-羥基乙酯 MMA︰甲基丙烯酸甲酯 BA︰丙烯酸正丁酯 AA︰丙烯酸 [交聯劑(B)] TDI：三羥甲基丙烷改質甲苯二異氰酸酯(TOYO CHEM公司製，產品名「BHS8515」) XDI：三羥甲基丙烷改質二甲苯二異氰酸酯(綜研化學公司製，產品名「TD-75」) 環氧︰1,3-雙(N,N-二縮水甘油基胺基甲基)環己烷(三菱氣體化學公司製，產品名「TETRAD-C」) [活性能量線硬化性成分(C)] C1：ε-己內酯改質參(2-丙烯醯氧乙基)三聚異氰酸酯(新中村化學公司製，產品名「NK Ester A-9300-1CL」) C2：三環癸烷二甲醇二丙烯酸酯 [著色劑(D)] 顏料︰碳黑系黑色顏料(TOYO COLOR公司製，「Multilac Black」) 染料︰尼格辛黑系黑色染料(Orient化學工業公司製，產品名「NUBIAN BLACK PA-2802」) [光聚合起始劑(E)] E1︰1-羥基環己基苯酮及二苯甲酮的質量比1︰1的混合品 E2︰2,4,6-三甲基苯甲醯基-二苯基-氧化膦Here, Table 1 shows each composition (solid content conversion value) of the adhesive composition when the (meth)acrylate polymer (A) was 100 mass parts (solid content conversion value). Moreover, the mass ratio (photoinitiator (E)/colorant (D)) of the quantity of a photoinitiator (E) with respect to the quantity of a coloring agent (D) was calculated, and it shows in Table 1. In addition, the details of the abbreviations etc. which are described in Table 1 are as follows. [(Meth)acrylate polymer (A)] 2EHA: 2-Ethylhexyl Acrylate IBXA: Isocamphoryl Acrylate ACMO: N-Acryloylmorpholine HEA: 2-Hydroxyethyl Acrylate MMA: methyl methacrylate BA: n-butyl acrylate AA: Acrylic [Crosslinking agent (B)] TDI: Trimethylolpropane-modified toluene diisocyanate (manufactured by TOYO CHEM, product name "BHS8515") XDI: Trimethylolpropane-modified xylene diisocyanate (manufactured by Soken Chemical Co., Ltd., product name "TD-75") Epoxy: 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane (manufactured by Mitsubishi Gas Chemical Co., Ltd., product name "TETRAD-C") [active energy ray hardening ingredient (C)] C1: ε-caprolactone-modified ginseng (2-acryloxyethyl) isocyanurate (manufactured by Shin-Nakamura Chemical Co., Ltd., product name "NK Ester A-9300-1CL") C2: Tricyclodecane dimethanol diacrylate [Color (D)] Pigment: carbon black-based black pigment (manufactured by TOYO COLOR, "Multilac Black") Dye: Nigthine black dye (manufactured by Orient Chemical Industry Co., Ltd., product name "NUBIAN BLACK PA-2802") [Photopolymerization initiator (E)] E1: A mixture of 1-hydroxycyclohexyl benzophenone and benzophenone in a mass ratio of 1:1 E2: 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide

3. 黏著片的製造3. Fabrication of Adhesive Sheets

將上述步驟2所得黏著性組合物的塗佈溶液，以刮刀塗佈機塗佈在，以矽酮系剝離劑剝離處理的聚對苯二甲酸乙二醇酯薄膜的一面的重剝離型剝離片(LINTEC公司製，產品名「SP-PET752150」)的剝離處理面。然後，藉由對塗佈層，以90℃加熱處理1分鐘形成塗佈層(厚度︰25μm)，製作附有塗佈層的重剝離型剝離片。The coating solution of the adhesive composition obtained in the above step 2 is coated with a knife coater on one side of a polyethylene terephthalate film that has been peeled off with a silicone-based release agent. (manufactured by Lintec Corporation, product name "SP-PET752150") peeling treatment surface. Then, the coating layer was heat-treated at 90° C. for 1 minute to form a coating layer (thickness: 25 μm), and a heavy-release type release sheet with a coating layer was produced.

另一方面，將上述步驟2所得黏著性組合物的塗佈溶液，以刮刀塗佈機塗佈在，以矽酮系剝離劑剝離處理的聚對苯二甲酸乙二醇酯薄膜的一面的輕剝離型剝離片(LINTEC公司製，產品名「SP-PET382120」)的剝離處理面。藉由對塗佈層，以90℃加熱處理1分鐘形成塗佈層(厚度︰25μm)，製作4片附有塗佈層的輕剝離型剝離片。On the other hand, the coating solution of the adhesive composition obtained in the above step 2 was coated on the light side of the polyethylene terephthalate film that was peeled off with a silicone-based release agent with a knife coater. The release-treated surface of a release-type release sheet (manufactured by Lintec Corporation, product name "SP-PET382120"). By heat-treating the coating layer at 90°C for 1 minute to form a coating layer (thickness: 25 μm), four light-peeling release sheets with coating layers were produced.

將上述所得附有塗佈層的重剝離型剝離片的塗佈層側的面，與上述所得附有塗佈層的輕剝離型剝離片之中的1片塗佈層側的面黏合，得到以重剝離型剝離片與輕剝離型剝離片，夾持厚度50μm的塗佈層的第1層積體。Adhere the surface on the coating layer side of the heavy release type release sheet with the coating layer obtained above to the surface on the coating layer side of one of the light release type release sheets with the coating layer obtained above to obtain The first laminate of the coating layer with a thickness of 50 μm was sandwiched between the heavy release type release sheet and the light release type release sheet.

接著，從上述第1層積體剝離輕剝離型剝離片，將露出的塗佈層的露出面，與上述所得附有塗佈層的輕剝離型剝離片之中的1片塗佈層側的面黏合，得到以重剝離型剝離片與輕剝離型剝離片，夾持厚度75μm的塗佈層的第2層積體。藉由重複與此相同的步驟，得到以重剝離型剝離片與輕剝離型剝離片，夾持厚度125μm的塗佈層的第4層積體。Next, the light-peeling type release sheet is peeled from the above-mentioned first laminate, and the exposed surface of the exposed coating layer is connected with the surface of one coating layer side of the light-peeling type release sheet with the coating layer obtained above. Surface bonding was performed to obtain a second laminate in which a coating layer with a thickness of 75 μm was sandwiched between a heavy-release type release sheet and a light-release type release sheet. By repeating the same procedure as above, a fourth laminate in which a coating layer having a thickness of 125 μm was sandwiched between a heavy-release type release sheet and a light-release type release sheet was obtained.

之後，將上述第4層積體，藉由在23℃、50%RH的條件下熟化7天，製作由重剝離型剝離片/黏著劑層(厚度︰125μm)/輕剝離型剝離片的構成所構成的黏著片。After that, the above-mentioned 4th laminate was aged for 7 days at 23°C and 50% RH to produce a composition consisting of a heavy release type release sheet/adhesive layer (thickness: 125 μm)/light release type release sheet composed of adhesive sheets.

再者，上述黏著劑層的厚度，係遵照JIS K7130，使用定壓厚度測定器(TECLOCK公司製，產品名「PG-02」)測定之值。In addition, the thickness of the said adhesive layer is the value measured using the constant-pressure thickness measuring device (made by TECLOCK company, product name "PG-02") in compliance with JIS K7130.

［實施例2~11，比較例1~2、參考例1］ 將構成(甲基)丙烯酸酯聚合物(A)的各單體的種類及比例，(甲基)丙烯酸酯聚合物(A)的重量平均分子量(Mw)，交聯劑(B)的種類及調配量，活性能量線硬化性成分(C)的種類及調配量、著色劑(D)的種類及調配量，光聚合起始劑(E)的種類及調配量，以及矽烷偶合劑的調配量變更為表1所示以外，以與實施例1同樣地製造黏著片。[Examples 2-11, Comparative Examples 1-2, Reference Example 1] The type and ratio of each monomer constituting the (meth)acrylate polymer (A), the weight average molecular weight (Mw) of the (meth)acrylate polymer (A), the type of the crosslinking agent (B) and Compounded amount, type and compounded amount of active energy ray-curing component (C), type and compounded amount of colorant (D), type and compounded amount of photopolymerization initiator (E), and compounded amount of silane coupling agent Except the changes shown in Table 1, the adhesive sheet was produced in the same manner as in Example 1.

在此，計算使實施例、比較例及參考例所形成的黏著劑層(黏著性組合物)中的著色劑的含量為X質量%，黏著劑層的厚度為Zμm時的X×Z。將結果示於表1。Here, X×Z is calculated when the content of the colorant in the adhesive layer (adhesive composition) formed in the examples, comparative examples, and reference examples is X mass % and the thickness of the adhesive layer is Z μm. The results are shown in Table 1.

上述重量平均分子量(Mw)係使用凝膠滲透層析(GPC)，以如下條件測定(GPC測定)之聚苯乙烯換算的重量平均分子量。 >測定條件> ．GPC測定裝置︰TOSOH公司製，HLC-8020 ．GPC管柱(依以下順序通過)：TOSOH公司製 TSK guard column HXL-H TSK ge1 GMHXL (×2) TSK ge1 G2000HXL ．測定溶劑︰四氫呋喃 ．測定溫度︰40℃The said weight average molecular weight (Mw) is the polystyrene conversion weight average molecular weight measured (GPC measurement) under the following conditions using gel permeation chromatography (GPC). >Measurement conditions> ． GPC measurement device: HLC-8020, manufactured by TOSOH ． GPC column (passed in the following order): manufactured by TOSOH TSK guard column HXL-H TSK ge1 GMHXL (×2) TSK ge1 G2000HXL ． Determination solvent: tetrahydrofuran ． Measuring temperature: 40°C

［試驗例1］(凝膠分率的測定) 將實施例、比較例及參考例所得的黏著片，裁切成80mm×80mm的尺寸，將該黏著劑層裝在聚酯製網(網(mesh)尺寸200)，將其質量以精密天平秤量，扣除上述網單獨的質量，算出只有黏著劑的質量。此時的質量為M1。[Test Example 1] (Measurement of Gel Fraction) The adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples were cut into a size of 80 mm × 80 mm, and the adhesive layer was placed on a polyester mesh (mesh size 200), and its mass was weighed with a precision balance , deduct the quality of the net alone, and calculate the quality of only the adhesive. The mass at this time is M1.

接著，將裝在上述聚酯製網的黏著劑，以室溫下(23℃)浸漬在醋酸乙酯24小時。之後，取出黏著劑，在溫度23℃，相對濕度50%的環境下，風乾24小時，進一步在80℃的烘箱中乾燥12小時。乾燥之後，以精密天平秤量其質量，扣除上述網單獨的質量，算出只有黏著劑的質量。此時的質量為M2。凝膠分率(%)，係以(M2/M1)×100表示。藉此，導出黏著劑的凝膠分率(紫外線照射前)。將結果示於表2。Next, the adhesive contained in the above-mentioned polyester mesh was immersed in ethyl acetate at room temperature (23° C.) for 24 hours. Afterwards, the adhesive was taken out, air-dried for 24 hours in an environment with a temperature of 23°C and a relative humidity of 50%, and further dried in an oven at 80°C for 12 hours. After drying, weigh its mass with a precision balance, deduct the mass of the net alone, and calculate the mass of only the adhesive. The mass at this time is M2. The gel fraction (%) is represented by (M2/M1)×100. Thereby, the gel fraction (before ultraviolet irradiation) of the adhesive was derived. The results are shown in Table 2.

另一方面，對實施例、比較例及參考例所得的黏著片的黏著劑層，隔著輕剝離型剝離片，以下述條件照射活性能量線(紫外線；UV)照射，使黏著劑層硬化作成硬化後黏著劑層。再者，關於實施例7的黏著片，係在輕剝離型剝離片上，疊置在聚碳酸酯樹脂(PC)板層積聚甲基丙烯酸甲酯樹脂(PMMA)層的塑膠板(三菱氣體化學公司製，產品名「Iupilon MR58U」，厚度︰0.7mm，含有紫外線吸收劑)，隔著該塑膠板，照射活性能量線。對上述硬化後黏著劑層的黏著劑，以與上述同樣地導出凝膠分率(UV照射之後)。將結果示於表2。On the other hand, the adhesive layers of the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples were irradiated with active energy rays (ultraviolet rays; UV) under the following conditions to harden the adhesive layers through light-peelable release sheets. Adhesive layer after hardening. Furthermore, regarding the adhesive sheet of Example 7, it is a light-peeling release sheet, and a plastic plate (Mitsubishi Gas Chemical Co., Ltd. Manufactured, product name "Iupilon MR58U", thickness: 0.7mm, contains UV absorber), through the plastic plate, irradiate active energy rays. For the adhesive of the adhesive layer after hardening, the gel fraction (after UV irradiation) was derived in the same manner as above. The results are shown in Table 2.

>活性能量線照射條件> ．使用高壓汞燈 ．照度200mW/cm2 、光量2000mJ/cm2 ．UV照度‧光量計 使用EYE GRAPHICS公司製「UVPF-A1」>Active energy ray irradiation conditions> . Use high pressure mercury lamps. Illuminance 200mW/cm 2 , light quantity 2000mJ/cm 2 . "UVPF-A1" made by EYE GRAPHICS Co., Ltd. was used as the UV illuminance and light quantity meter

［試驗例2］ (全光線穿透率的測定) 將實施例、比較例及參考例所得的黏著片的黏著劑層黏合在玻璃上，將此作為測定樣品。以玻璃進行背景測定之後，對上述測定樣品，遵照JIS K7361-1：1997，使用霧度計(日本電色工業公司製，產品名「NDH-5000」)測定全光線穿透率(%)。將結果示於表2。[Test example 2] (Measurement of total light transmittance) The adhesive layers of the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples were bonded to glass, and this was used as a measurement sample. After the background measurement with glass, the total light transmittance (%) was measured with a haze meter (manufactured by Nippon Denshoku Kogyo Co., Ltd., product name "NDH-5000") in accordance with JIS K7361-1:1997 for the measurement sample. The results are shown in Table 2.

［試驗例3］ (霧度值的測定) 對實施例、比較例及參考例所得黏著片的黏著劑層，遵照JIS K7136：2000，使用霧度計(日本電色工業公司製，產品名「NDH—5000」)測定霧度值(%)。將結果示於表2。[Test Example 3] (Determination of haze value) For the adhesive layers of the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples, the haze value (%) was measured using a haze meter (manufactured by Nippon Denshoku Kogyo Co., Ltd., product name "NDH-5000") in accordance with JIS K7136:2000 . The results are shown in Table 2.

［試驗例4］ (L*a*b*的測定) 為實施例、比較例及參考例所得黏著片的黏著劑層，使用同時測光分光式色度計(日本電色工業公司製，產品名「SQ2000」)，測定CIE1976L*a* b*表色系所規定的明度L*、色度a*及色度b*。將結果示於表2。[Test Example 4] (Determination of L*a*b*) For the adhesive layer of the adhesive sheet obtained in Examples, Comparative Examples, and Reference Examples, the CIE1976L*a*b* colorimetric system was measured using a simultaneous photometry spectroscopic colorimeter (manufactured by Nippon Denshoku Kogyo Co., Ltd., product name "SQ2000") The specified lightness L*, chroma a* and chroma b*. The results are shown in Table 2.

［試驗例5］ (黏著力的測定) 從實施例、比較例及參考例所得的黏著片，剝離輕剝離型剝離片，將露出的黏著劑層，黏合於具有易接著層的聚對苯二甲酸乙二醇酯(PET)薄膜(東洋紡公司製，產品名「PET A4300」，厚度︰100μm)的易接著層，得到重剝離型剝離片/黏著劑層/PET薄膜的層積體。將所得層積體裁切成寬25mm，長100mm，將此作為樣品。[Test Example 5] (measurement of adhesion) From the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples, the light-peelable release sheet was peeled off, and the exposed adhesive layer was adhered to a polyethylene terephthalate (PET) film (Toyobo Made by the company, product name "PET A4300", thickness: 100μm) easy-adhesive layer to obtain a laminate of heavy-release type release sheet/adhesive layer/PET film. The obtained laminate was cut out to a width of 25 mm and a length of 100 mm, and this was used as a sample.

在23℃，50%RH的環境下，從上述樣品剝離重剝離型剝離片，將露出的黏著劑層黏合在鈉鈣玻璃(日本板硝子公司製)之後，以栗原製造所公司製高壓釜(autoclave)，以0.5MPa，50℃，加壓20分鐘。之後，在23℃、50%RH的放置24小時。In an environment of 23°C and 50% RH, the heavy peeling type peeling sheet was peeled off from the above sample, and the exposed adhesive layer was bonded to soda lime glass (manufactured by Nippon Plate Glass Co., Ltd.) ), pressurize at 0.5MPa, 50°C for 20 minutes. Thereafter, it was left to stand at 23° C. and 50% RH for 24 hours.

接著，隔著上述重剝離型剝離片，以與試驗例1同樣的條件照射活性能量線，將黏著劑層硬化作成硬化後黏著劑層。再者，關於實施例7的黏著片，是在重剝離型剝離片上，疊置在PC板層積PMMA層的塑膠板(三菱氣體化學公司製，產品名「Iupilon MR58U」，厚度︰0.7mm，含有紫外線吸收劑)，隔著該塑膠板，照射活性能量線。此外，參考例1係不照射活性能量線的狀態。然後，使用拉伸試驗機(Orientec公司製，產品名「Tensilon」)，以剝離速度300mm/min，剝離角度180度的條件，測定黏著力(N/25mm)。在此所記載以外的條件，遵照JIS Z0237：2009，進行測定。將結果示於表2。Next, active energy rays were irradiated under the same conditions as in Test Example 1 through the above-mentioned heavy peeling type release sheet to harden the adhesive layer to obtain a cured adhesive layer. Furthermore, regarding the adhesive sheet of Example 7, it is a plastic sheet (manufactured by Mitsubishi Gas Chemical Co., Ltd., product name "Iupilon MR58U", thickness: 0.7mm, Contains UV absorber), active energy rays are irradiated through this plastic plate. In addition, Reference Example 1 is a state in which active energy rays are not irradiated. Then, using a tensile tester (manufactured by Orientec, product name "Tensilon"), the adhesive force (N/25mm) was measured under conditions of a peeling speed of 300 mm/min and a peeling angle of 180 degrees. Conditions other than those described here were measured in compliance with JIS Z0237:2009. The results are shown in Table 2.

［試驗例6］ (外觀協調性的評價) 將實施例、比較例及參考例所得黏著片，裁切成長70mm×寬70mm，將該黏著片的黏著劑層，以2片鈉鈣玻璃板(日本板硝子公司製，長70mm×寬70mm×厚1.1mm)，夾持地黏貼。接著，隔著一方的鈉鈣玻璃板，以與試驗例1同樣的條件照射活性能量線，使黏著劑層硬化作成硬化後黏著劑層，將此作為樣品。再者，參考例1是不照射活性能量線的狀態。[Test Example 6] (Evaluation of Appearance Coordination) The adhesive sheets obtained in the examples, comparative examples and reference examples were cut into 70 mm x 70 mm wide, and the adhesive layer of the adhesive sheet was cut into 2 soda-lime glass plates (manufactured by Nippon Plate Glass Co., Ltd., 70 mm long x 70 mm wide x thick). 1.1mm), clampingly pasted. Next, active energy rays were irradiated under the same conditions as in Test Example 1 via one soda-lime glass plate to harden the adhesive layer to form a cured adhesive layer, which was used as a sample. In addition, Reference Example 1 is a state where active energy rays are not irradiated.

將所得樣品，配置在印刷成黑色作為背景的紙(L*：29.8，a*：-0.7，b*：0.6)上。然後，以目視判斷，該樣品是否與背景融合(與背景具有一體感)，以3波長日光燈下(從日光燈的距離︰200cm)，於如下基準評價外觀協調性。將結果示於表2。 ◎：樣品對背景非常融合。 ○：樣品某種程度與背景融合。 ╳：樣品明顯沒有與背景融合。The obtained sample was arranged on paper printed in black as a background (L*: 29.8, a*: -0.7, b*: 0.6). Then, visually judge whether the sample blends with the background (there is a sense of unity with the background), and under a 3-wavelength fluorescent lamp (distance from the fluorescent lamp: 200cm), the appearance coordination is evaluated on the following criteria. The results are shown in Table 2. ◎: The sample blends well with the background. ○: The sample merges with the background to some extent. ╳: The sample is obviously not merged with the background.

再者，上述黑色印刷的紙的色調(CIE1976L*a*b*表色系所規定的L*a*b*)，係使用分光測色計(BYK公司製，產品名「Spectro guide」)測定。In addition, the color tone (L*a*b* stipulated in the CIE1976 L*a*b* color system) of the above-mentioned black printed paper was measured using a spectrophotometer (manufactured by BYK Corporation, product name "Spectro guide") .

［試驗例7］ (文字視認性的評價) 在尺寸15.6英寸，解析度1366×768的顯示器(富士通公司製，產品名「LITEBOOK A574/H」)，以白背景，黑字的文字(字型︰微軟哥特體(Gothic))，從5點至20點的大小(每隔1點)，以100%顯示。[Test Example 7] (evaluation of character visibility) On a display with a size of 15.6 inches and a resolution of 1366×768 (manufactured by Fujitsu Corporation, product name "LITEBOOK A574/H"), black characters (font: Microsoft Gothic) on a white background, from 5 Dots to 20 dots in size (every 1 dot), displayed at 100%.

在上述顯示器上，配置與試驗例6同樣地製作的樣品。然後，從顯示器在50cm的位置，確認能以目視視認的文字尺寸，以如下基準評價文字視認性。將結果示於表2。 ◎：能夠確認8點的文字。 ○：雖無法完全視認8點的文字，但能夠視認15點的文字。 ╳：無法視認15點的文字。The sample produced in the same manner as in Test Example 6 was placed on the display. Then, at a position of 50 cm from the display, the size of characters that can be visually recognized was confirmed, and the character visibility was evaluated on the basis of the following criteria. The results are shown in Table 2. ◎: Characters at 8 points can be confirmed. ○: 8-dot characters could not be fully recognized, but 15-dot characters could be recognized. ╳: The 15-dot character cannot be recognized visually.

［試驗例8］ (段差追隨性的評價) 在玻璃板(NSG Precision公司製，產品名「Corning glass Eagle XG」，長90mm×寬50mm×厚度0.5mm)的表面，將紫外線硬化型墨水(Teikoku Printing Inks Mfg公司製，產品名「POS-911 BLACK」)，網版印刷成畫框狀(外形：縱90mm×橫50mm，寬5mm)。接著，照射紫外線(80W/cm2 ，金屬鹵素燈2盞，燈泡高度15cm，輸送帶速度10~15m/分)，使印刷的上述紫外線硬化型墨水硬化，製作具有藉由印刷的段差(段差的高度︰5μm、10μm)的附有段差的玻璃板。[Test Example 8] (Evaluation of Step Followability) UV-curable ink (Teikoku Made by Printing Inks Mfg Co., Ltd., product name "POS-911 BLACK"), and screen-printed in the shape of a picture frame (outline: 90 mm in length x 50 mm in width, 5 mm in width). Next, irradiate ultraviolet rays (80W/cm 2 , 2 metal halide lamps, bulb height 15cm, conveyor belt speed 10~15m/min), harden the above-mentioned ultraviolet curable ink printed, and make the step difference (step difference) by printing. Height: 5μm, 10μm) glass plate with steps.

從實施例、比較例及參考例所得的黏著片，剝離輕剝離型剝離片，將露出的黏著劑層，黏合於具有易接著層的聚對苯二甲酸乙二醇酯(PET)薄膜(東洋紡公司製，產品名「PET A4300」，厚度︰100μm)的易接著層。接著，將重剝離型剝離片剝下，使黏著劑層露出。然後，使用貼合機(laminator)(FUJiPLA公司製，產品名「LPD3214」)，使黏著劑層以畫框狀覆蓋印刷全面，以上述層積體層壓(laminate)在附有各段差的玻璃板上。之後，以50℃，0.5MPa的條件下高壓釜處理20分鐘，在常壓、23℃、50%RH的條件下放置24小時。From the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples, the light-peelable release sheet was peeled off, and the exposed adhesive layer was adhered to a polyethylene terephthalate (PET) film (Toyobo Made by the company, product name "PET A4300", thickness: 100μm) easy-adhesive layer. Next, peel off the heavy release type release sheet to expose the adhesive layer. Then, using a laminator (manufactured by FUJiPLA, product name "LPD3214"), the adhesive layer is printed over the entire surface in a picture frame shape, and the above-mentioned laminate is laminated on the glass plate with each step. superior. Afterwards, autoclave at 50° C. and 0.5 MPa for 20 minutes, and then stand at normal pressure, 23° C., and 50% RH for 24 hours.

接著，隔著上述PET薄膜，以與試驗例1同樣的條件照射活性能量線，使黏著劑層硬化作成硬化後黏著劑層。再者，關於實施例7的黏著片，係在上述PET薄膜上，疊置在PC板層積PMMA層的塑膠板(三菱氣體化學公司製，產品名「Iupilon MR58U」，厚度︰0.7mm，含有紫外線吸收劑)，隔著該塑膠板，照射活性能量線。接著，以85℃，85%RH的溫熱條件下保管72小時。之後，根據如下基準評價段差追隨性。段差追隨性，以印刷段差完全被硬化後黏著劑層填埋時判斷為良好，在印刷段差與硬化後黏著劑層的界面觀察到浮起、剝落等等時，判斷為無法追隨印刷段差。再者，參考例1係沒有照射活性能量線以外，與上述同樣地評價段差追隨性。將結果示於表2。 ◎：在印刷段差10μm良好 ○︰在印刷段差5μm良好 ╳︰在印刷段差5μm有浮起剝落Next, active energy rays were irradiated under the same conditions as in Test Example 1 through the above-mentioned PET film to cure the adhesive layer to obtain a cured adhesive layer. Furthermore, with regard to the adhesive sheet of Example 7, it is on the above-mentioned PET film, laminated on the plastic plate (Mitsubishi Gas Chemical Co., Ltd., product name "Iupilon MR58U") laminated with a PMMA layer on the PC board, thickness: 0.7mm, containing UV absorber) is irradiated with active energy rays through the plastic plate. Then, it was stored for 72 hours under warm conditions of 85° C. and 85% RH. Thereafter, step followability was evaluated based on the following criteria. Step followability is judged to be good when the printed step is completely buried by the hardened adhesive layer. When floating, peeling, etc. are observed at the interface between the printed step and the hardened adhesive layer, it is judged that the printed step cannot be followed. In addition, the step followability was evaluated similarly to the above except that the reference example 1 was not irradiated with an active energy ray. The results are shown in Table 2. ◎: Good at printing level difference of 10μm ○: good in printing step difference 5μm ╳: There is floating and peeling at the printing step difference of 5μm

［試驗例9］ (耐起泡性的評價) 從實施例、比較例及參考例所得的黏著片，剝離輕剝離型剝離片，將露出的黏著劑層，黏合在對PC板層積PMMA層的塑膠板(三菱氣體化學公司製，產品名「Iupilon MR58U」，厚度︰0.7mm，含有紫外線吸收劑)的PC板側，得到附有黏著劑層的塑膠板。[Test Example 9] (Evaluation of Blistering Resistance) From the adhesive sheets obtained in Examples, Comparative Examples, and Reference Examples, the light-peelable release sheet was peeled off, and the exposed adhesive layer was bonded to a plastic plate (manufactured by Mitsubishi Gas Chemical Co., Ltd., product name " Iupilon MR58U", thickness: 0.7mm, containing UV absorber) on the PC board side, to obtain a plastic board with an adhesive layer attached.

從上述所得附有黏著劑層的塑膠板剝離重剝離型剝離片，經由露出的黏著劑層，將該塑膠板黏合在70mm×150mm大小的鈉鈣玻璃板(日本板硝子公司製，厚度︰0.7mm)。然後，以50℃，0.5 MPa的條件下高壓釜處理20分鐘，在常壓、23℃、50%RH的條件下放置24小時。Peel off the heavy-release release sheet from the plastic plate with the adhesive layer obtained above, and bond the plastic plate to a soda-lime glass plate (manufactured by Nippon Plate Glass Co., Ltd., thickness: 0.7 mm) through the exposed adhesive layer. ). Then, it was autoclaved at 50° C. and 0.5 MPa for 20 minutes, and placed at normal pressure, 23° C., and 50% RH for 24 hours.

接著，對上述黏著劑層，隔著鈉鈣玻璃板，以與試驗例1同樣的條件照射活性能量線，使黏著劑層硬化作成硬化後黏著劑層。再者，只有實施例7不是隔著鈉鈣玻璃板，而是隔著上述塑膠板照射活性能量線。如此，藉由硬化後黏著劑層得到黏合塑膠板與玻璃板黏的構成體(70mm×150mm)。Next, the above-mentioned adhesive layer was irradiated with active energy rays under the same conditions as in Test Example 1 through a soda-lime glass plate to harden the adhesive layer to obtain a cured adhesive layer. In addition, only Example 7 was irradiated with active energy rays not through the soda-lime glass plate but through the above-mentioned plastic plate. In this way, a structure (70mm×150mm) of bonding a plastic plate and a glass plate is obtained through the hardened adhesive layer.

對上述構成體，以85℃、85%RH的高溫高濕條件下保管72小時。然後，以目視確認硬化後黏著劑層與被黏附體(塑膠板、玻璃板)的界面狀態，以如下基準評價耐起泡性。再者，參考例1，沒有照射活性能量線以外，以與上述同樣地評價耐起泡性。將結果示於表2。 ◎…沒有氣泡、浮起．剝落。 ○…沒有浮起．剝落，有發生些微的氣泡，但在沒有問題的程度。 △…雖然沒有浮起．剝落，但發生很多氣泡。 ╳…發生浮起．剝落。The above-mentioned structure was stored under high-temperature and high-humidity conditions of 85°C and 85%RH for 72 hours. Then, the state of the interface between the adhesive layer and the adherend (plastic plate, glass plate) after curing was visually confirmed, and the foaming resistance was evaluated on the basis of the following criteria. In addition, in Reference Example 1, the foaming resistance was evaluated in the same manner as above except that no active energy rays were irradiated. The results are shown in Table 2. ◎…No air bubbles or floating. peeling off. ○...It does not float. Peeling, slight air bubbles have occurred, but there is no problem at the level. △...Although it did not float. Peeled off, but a lot of air bubbles occurred. ╳…Floating occurs. peeling off.

[表1] (甲基)丙烯酸酯聚合物(A) 交聯劑(B) 活性能量線硬化性成分(C) 著色劑(D) 光聚合 起始劑(E) 光聚合起始劑(E)/著色劑(D) 矽烷 偶合劑 [質量份] 黏著劑層厚度(Z)[μm] X(質量%)× Z(μm) 組成 Mw 種類 質量份 種類 質量份 種類 質量份 質量% (X) 種類 質量份 實施例1 2EHA/IBXA/ACMO/HEA =65/10/10/15 50萬 TDI 0.2 C1 5 顏料 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 實施例2 TDI 0.2 C1 5 顏料 0.16 0.15 E1 0.5 3.1 0.1 125 18.8 實施例3 TDI 0.2 C1 5 顏料 0.3 0.28 E1 0.5 1.7 0.1 125 35.0 實施例4 TDI 0.2 C1 5 顏料 0.6 0.56 E1 0.5 0.8 0.1 125 70.0 實施例5 XDI 0.2 C1 5 顏料 0.16 0.15 E1 0.5 3.1 0.1 125 18.8 實施例6 TDI 0.2 C1 5 顏料 0.16 0.15 E1 0.5 3.1 － 125 18.8 實施例7 TDI 0.2 C1 5 顏料 0.16 0.15 E2 0.5 3.1 0.1 125 18.8 實施例8 TDI 0.2 C1 5 染料 0.12 0.11 E1 0.5 4.2 0.1 125 13.8 實施例9 TDI 0.2 C2 5 顏料 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 實施例10 2EHA/MMA/HEA =60/20/20 70萬 TDI 0.3 C1 5 顏料 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 實施例11 BA/AA=90/10 50萬 環氧 0.05 C1 10 顏料 0.08 0.07 E1 1.0 12.5 － 125 8.8 比較例1 2EHA/IBXA/ACMO/HEA =65/10/10/15 50萬 TDI 0.2 C1 5 － － 0 E1 0.5 － 0.1 125 0 比較例2 TDI 0.2 C1 5 顏料 3.0 2.77 E1 0.5 0.2 0.1 125 346.3 參考例1 TDI 0.2 － － 顏料 0.16 0.16 － － 0.0 0.1 125 20.0 [Table 1] (meth)acrylate polymer (A) Cross-linking agent (B) Active energy ray hardening ingredient (C) Colorant (D) Photopolymerization initiator (E) Photopolymerization initiator (E)/colorant (D) Silane coupling agent [parts by mass] Adhesive layer thickness (Z) [μm] X(mass%)×Z(μm) composition mw type parts by mass type parts by mass type parts by mass Mass % (X) type parts by mass Example 1 2EHA/IBXA/ACMO/HEA=65/10/10/15 500000 TDI 0.2 C1 5 pigment 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 Example 2 TDI 0.2 C1 5 pigment 0.16 0.15 E1 0.5 3.1 0.1 125 18.8 Example 3 TDI 0.2 C1 5 pigment 0.3 0.28 E1 0.5 1.7 0.1 125 35.0 Example 4 TDI 0.2 C1 5 pigment 0.6 0.56 E1 0.5 0.8 0.1 125 70.0 Example 5 XDI 0.2 C1 5 pigment 0.16 0.15 E1 0.5 3.1 0.1 125 18.8 Example 6 TDI 0.2 C1 5 pigment 0.16 0.15 E1 0.5 3.1 - 125 18.8 Example 7 TDI 0.2 C1 5 pigment 0.16 0.15 E2 0.5 3.1 0.1 125 18.8 Example 8 TDI 0.2 C1 5 dye 0.12 0.11 E1 0.5 4.2 0.1 125 13.8 Example 9 TDI 0.2 C2 5 pigment 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 Example 10 2EHA/MMA/HEA=60/20/20 700,000 TDI 0.3 C1 5 pigment 0.08 0.08 E1 0.5 6.3 0.1 125 10.0 Example 11 BA/AA=90/10 500000 epoxy 0.05 C1 10 pigment 0.08 0.07 E1 1.0 12.5 - 125 8.8 Comparative example 1 2EHA/IBXA/ACMO/HEA=65/10/10/15 500000 TDI 0.2 C1 5 - - 0 E1 0.5 - 0.1 125 0 Comparative example 2 TDI 0.2 C1 5 pigment 3.0 2.77 E1 0.5 0.2 0.1 125 346.3 Reference example 1 TDI 0.2 - - pigment 0.16 0.16 - - 0.0 0.1 125 20.0

[表2] 凝膠分率(%) 全光線 穿透率 (%) 霧度值 (%) 表色系 黏著力 (N/25mm) 外觀協調性 文字 視認性 段差 追隨性 耐起泡性 UV 照射前 UV 照射後 L* a* b* 實施例1 51 73 84.7 8.2 90.4 -0.2 0.5 54 ○ ◎ ◎ ◎ 實施例2 53 70 74.2 13.9 85.8 -0.1 0.6 54 ◎ ◎ ◎ ◎ 實施例3 48 66 56.3 24.4 77.2 0.1 0.9 53 ◎ ◎ ◎ ○ 實施例4 48 66 31.8 41.8 61.0 0.3 1.3 51 ◎ ○ ◎ ○ 實施例5 48 70 73.5 14.0 85.6 -0.1 0.6 51 ◎ ◎ ◎ ◎ 實施例6 50 71 74.5 13.8 85.8 -0.1 0.6 52 ◎ ◎ ◎ ○ 實施例7 47 68 74.1 13.8 85.7 -0.2 0.6 51 ◎ ◎ ◎ ◎ 實施例8 51 70 46.0 0.1 71.5 0.8 -0.4 52 ○ ○ ◎ ○ 實施例9 51 75 84.0 8.5 90.3 -0.2 0.4 53 ○ ◎ ◎ ○ 實施例10 70 83 84.8 8.0 90.4 -0.2 0.5 25 ○ ◎ ○ ○ 實施例11 55 81 85.0 7.5 91.0 -0.3 0.2 38 ○ ◎ ◎ ○ 比較例1 46 73 99≦ 0.2 96.5 -0.3 0.2 55 ╳ ◎ ◎ ○ 比較例2 47 62 0.3 90.6 0.1 0.3 -1.2 45 ○ ╳ ◎ △ 參考例1 56 56 74.1 13.9 85.6 -0.1 0.7 40 ◎ ◎ ○ ╳ [Table 2] Gel fraction (%) Total light transmittance (%) Haze value (%) Color system Adhesion (N/25mm) Appearance coordination text visibility Follow-up Blister resistance Before UV irradiation After UV irradiation L* a* b* Example 1 51 73 84.7 8.2 90.4 -0.2 0.5 54 ○ ◎ ◎ ◎ Example 2 53 70 74.2 13.9 85.8 -0.1 0.6 54 ◎ ◎ ◎ ◎ Example 3 48 66 56.3 24.4 77.2 0.1 0.9 53 ◎ ◎ ◎ ○ Example 4 48 66 31.8 41.8 61.0 0.3 1.3 51 ◎ ○ ◎ ○ Example 5 48 70 73.5 14.0 85.6 -0.1 0.6 51 ◎ ◎ ◎ ◎ Example 6 50 71 74.5 13.8 85.8 -0.1 0.6 52 ◎ ◎ ◎ ○ Example 7 47 68 74.1 13.8 85.7 -0.2 0.6 51 ◎ ◎ ◎ ◎ Example 8 51 70 46.0 0.1 71.5 0.8 -0.4 52 ○ ○ ◎ ○ Example 9 51 75 84.0 8.5 90.3 -0.2 0.4 53 ○ ◎ ◎ ○ Example 10 70 83 84.8 8.0 90.4 -0.2 0.5 25 ○ ◎ ○ ○ Example 11 55 81 85.0 7.5 91.0 -0.3 0.2 38 ○ ◎ ◎ ○ Comparative example 1 46 73 99≦ 0.2 96.5 -0.3 0.2 55 ╳ ◎ ◎ ○ Comparative example 2 47 62 0.3 90.6 0.1 0.3 -1.2 45 ○ ╳ ◎ △ Reference example 1 56 56 74.1 13.9 85.6 -0.1 0.7 40 ◎ ◎ ○ ╳

從表2可知使用實施例所得黏著片的，外觀協調性及文字視認性優良，同時段差追隨性及耐起泡性亦優良。 [產業上的可利性]From Table 2, it can be seen that the adhesive sheet obtained in the examples is excellent in appearance coordination and character visibility, and also excellent in level difference followability and anti-foaming property. [industrial availability]

本發明的黏著片，可良好地使用在例如具有黑色框材的顯示體的顯示體構成構件的相互黏合，特別是具有段差的保護面板與所期望的顯示體構成構件的黏合等。The adhesive sheet of the present invention can be favorably used for, for example, bonding display constituent members of a display body having a black frame material, especially bonding a protective panel having steps and a desired display constituent member.

1:黏著片 11:黏著劑層 12a:剝離片 12b:剝離片 2:顯示體 11’:硬化後黏著劑層 21:第1顯示體構成構件 22:第2顯示體構成構件 3:印刷層 4:框材1: Adhesive sheet 11: Adhesive layer 12a: Stripping sheet 12b: Stripping sheet 2: display body 11': Adhesive layer after hardening 21: Components of the first display body 22: The second display component 3: Printing layer 4: frame material

[圖1]係關於本發明的一實施形態的黏著片的剖面圖。 [圖2]係關於本發明的一實施形態的顯示體的剖面圖。 [圖3]係關於本發明的一實施形態的具有框材的顯示體的平面圖。[ Fig. 1] Fig. 1 is a cross-sectional view of an adhesive sheet according to an embodiment of the present invention. [ Fig. 2] Fig. 2 is a cross-sectional view of a display body according to an embodiment of the present invention. [ Fig. 3] Fig. 3 is a plan view of a display body having a frame according to an embodiment of the present invention.

1:黏著片 1: Adhesive sheet

11:黏著劑層 11: Adhesive layer

12a、12b:剝離片 12a, 12b: Peeling sheet

Claims (12)

一種黏著片，其特徵在於：該黏著片係包括用於黏合一顯示體構成構件與其他的顯示體構成構件的黏著劑層， 上述黏著劑層係由含有著色劑的活性能量線硬化性黏著劑構成， 上述黏著劑層的全光線穿透率為3%以上， 上述黏著劑層的CIE1976L*a*b*表色系所規定的明度L*為95以下。An adhesive sheet, characterized in that: the adhesive sheet includes an adhesive layer for adhering a display body constituent member and other display body constituent members, The adhesive layer is composed of an active energy ray-curable adhesive containing a coloring agent, The total light transmittance of the adhesive layer is above 3%, The lightness L* specified by the CIE1976L*a*b* color system of the adhesive layer is 95 or less. 如請求項1之黏著片，其中上述黏著劑層的霧度(haze)值為0.01%以上且80%以下。The adhesive sheet according to claim 1, wherein the adhesive layer has a haze value of not less than 0.01% and not more than 80%. 如請求項1之黏著片，其中上述著色劑為黑色的顏料或染料。The adhesive sheet according to claim 1, wherein the colorant is a black pigment or dye. 如請求項1之黏著片，其中上述黏著劑中的上述著色劑的含量為X質量%，上述黏著劑層的厚度為Zμm時，滿足下述式(I)： 5≦X×Z>300‧‧‧(I)。The adhesive sheet according to claim 1, wherein the content of the colorant in the adhesive is X% by mass, and when the thickness of the adhesive layer is Z μm, the following formula (I) is satisfied: 5≦X×Z>300‧‧‧(I). 如請求項1之黏著片，其中上述活性能量線硬化性黏著劑中的上述著色劑的含量，為0.01質量%以上且2.0質量%以下。The adhesive sheet according to claim 1, wherein the content of the coloring agent in the active energy ray-curable adhesive is 0.01% by mass or more and 2.0% by mass or less. 如請求項1之黏著片，其中上述黏著劑為丙烯酸系黏著劑。The adhesive sheet according to claim 1, wherein the adhesive is an acrylic adhesive. 如請求項1之黏著片，其中上述黏著劑，係將含有(甲基)丙烯酸酯聚合物(A)、交聯劑(B)、活性能量線硬化性成分(C)及著色劑(D)的黏著性組合物交聯者。The adhesive sheet according to claim 1, wherein the above-mentioned adhesive contains (meth)acrylate polymer (A), crosslinking agent (B), active energy ray-curable component (C) and colorant (D) Adhesive composition crosslinkers. 如請求項1之黏著片，包括： 2片剝離片；及 以接於上述2片剝離片的剝離面而夾持(sandwich)在上述剝離片的上述黏著劑層。Such as the adhesive sheet of claim 1, including: 2 peel-off sheets; and The above-mentioned pressure-sensitive adhesive layer on the above-mentioned release sheet was sandwiched (sandwiched) by the release surface of the above-mentioned two release sheets. 一種顯示體，其特徵在於：該顯示體係包括： 一顯示體構成構件； 其他的顯示體構成構件； 將上述一顯示體構成構件與上述其他的顯示體構成構件互相黏合的硬化後黏著劑層， 上述硬化後黏著劑層，係將如請求項1-8項中任一之黏著片的上述黏著劑層，活性能量線硬化而形成的硬化後黏著劑層。A display body, characterized in that: the display system includes: a display component; other display components; a hardened adhesive layer for bonding the above-mentioned one display body constituent member and the above-mentioned other display body constituent member to each other, The above-mentioned hardened adhesive layer is a hardened adhesive layer formed by curing the above-mentioned adhesive layer of the adhesive sheet according to any one of claims 1-8 with active energy rays. 如請求項9之顯示體，其中上述第一顯示體構成構件及上述其他的顯示體構成構件的至少一方，至少在以上述硬化後黏著劑層黏合側的面具有段差。The display according to claim 9, wherein at least one of the first display constituting member and the other display constituting member has a level difference at least on the surface on the side bonded with the cured adhesive layer. 如請求項9之顯示體，其具有黑色框材。As the display body of claim 9, it has a black frame material. 一種顯示體的製造方法，其特徵在於：製作將一顯示體構成構件與其他的顯示體構成構件，經由請求項1-8中任一之黏著片的黏著劑層黏合而成的層積體， 對上述層積體的上述黏著劑層照射活性能量線，使上述黏著劑層硬化作為硬化後黏著劑層。A method of manufacturing a display body, characterized in that: producing a laminate formed by bonding one display body constituent member and other display body constituent members via the adhesive layer of the adhesive sheet in any one of Claims 1-8, The above-mentioned adhesive layer of the above-mentioned laminate is irradiated with active energy rays, and the above-mentioned adhesive layer is cured to form a cured adhesive layer.
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