TW201307072A - Hard-coating film and touch panel - Google Patents

Hard-coating film and touch panel Download PDF

Info

Publication number
TW201307072A
TW201307072A TW101125063A TW101125063A TW201307072A TW 201307072 A TW201307072 A TW 201307072A TW 101125063 A TW101125063 A TW 101125063A TW 101125063 A TW101125063 A TW 101125063A TW 201307072 A TW201307072 A TW 201307072A
Authority
TW
Taiwan
Prior art keywords
hard coat
material layer
coat film
base material
acrylate
Prior art date
Application number
TW101125063A
Other languages
Chinese (zh)
Inventor
Motohiko Okabe
Daishi Endo
Tadashi Akamatsu
Original Assignee
Keiwa Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keiwa Inc filed Critical Keiwa Inc
Publication of TW201307072A publication Critical patent/TW201307072A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Position Input By Displaying (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

The purpose of the present invention is to provide a hard-coating film and touch panel using the hard-coating film to effectively prevent the splashing of fragments under the circumstance of glass substrate breakage. The hard-coating film of the present invention has: a transparent substrate material layer; a hard-coating layer laminated on one face of the substrate material layer; and the glue layer laminated on the other face of the substrate material layer. The in-plane retardation value (Ro) is below 100 nm, and also the in-thickness direction retardation value (Rth) is below 200 nm. In the hard-coating film, said substrate material layer has preferably Polycarbonate-series resin, Cycloolefin copolymer, or Acrylic acid-series resin as the main components. The thickness of said substrate material layer in the hard-coating film is preferably between10 <mu>m ~ 500 <mu>m. The haze of hard-coating film is preferably below 2%.

Description

硬塗層膜及觸控面板 Hard coating film and touch panel

本發明涉及一種適用於液晶顯示裝置使用的硬塗層膜及觸控面板。 The present invention relates to a hard coat film and a touch panel suitable for use in a liquid crystal display device.

液晶顯示模組(LCD)利用其薄、輕、耗電低等特點多用作平板顯示器，其作為手機、掌上型電腦(PDA)、個人電腦、電視等資訊顯示裝置的應用正在逐年擴大。近年來，作為液晶顯示模組要求的特性，根據用途有各種各樣的要求，可列舉亮度(高亮度化)、易於觀看(寬視角化)、節能化、薄輕化、大螢幕化等。 The liquid crystal display module (LCD) is widely used as a flat panel display because of its thinness, lightness, low power consumption, etc., and its application as an information display device for mobile phones, palm-sized computers (PDAs), personal computers, televisions, etc. is expanding year by year. In recent years, various characteristics required for the liquid crystal display module are various depending on the application, and examples thereof include brightness (high luminance), easy viewing (wide viewing angle), energy saving, thinness, and large screen.

作為上述的液晶顯示模組，也有提高觀看的人的易操作性、快速性等安裝觸控面板的產品。因此，安裝上述觸控面板的液晶顯示模組一般具有從表面側到背面側順序疊放觸控面板、液晶顯示元件、各種光學板及背光源的構造。 As the liquid crystal display module described above, there is also a product for mounting a touch panel such as ease of operation and quickness of a person who views. Therefore, the liquid crystal display module in which the touch panel is mounted generally has a structure in which a touch panel, a liquid crystal display element, various optical plates, and a backlight are stacked in this order from the front side to the back side.

作為上述觸控面板，具有電容式、電阻膜式、電磁感應式等。作為上述電容式，是具有在相互交叉的方向上延伸的電極，監測手指等接觸時電極間的電容變化而檢測出輸入位置的產品(參照特開2011-76386號公報)，或在透光性導電膜的兩端施加相位相同、電位相同的交流電，檢測手指接觸或接近形成電容時流動的微弱電流而檢測出輸入位置的產品等。 The touch panel has a capacitive type, a resistive film type, an electromagnetic induction type, or the like. The above-mentioned capacitive type is an electrode having an electrode extending in a direction intersecting each other, and detecting a change in capacitance between electrodes when a finger or the like is contacted, and detecting an input position (refer to Japanese Laid-Open Patent Publication No. 2011-76386), or in translucency An alternating current having the same phase and the same potential is applied to both ends of the conductive film, and a product that detects the input position by detecting a weak current flowing when the finger contacts or approaches a capacitance is detected.

然而，採用的觸控面板在觀看的人強力按壓玻璃基板時或觸控面板掉落時，有該玻璃基板等破損使上述碎片飛濺的可能性。因此，上述觸控面板具有以下問題，在玻璃基板等飛濺時，有上述碎片劃傷觀看的人的手指等使觀看的人受傷的危險，此外上述碎片也可能成為損壞觸控面板背面側疊放的液晶顯示 元件的原因。上述問題在電阻膜式、電磁感應式等其他形式的觸控面板中同樣存在。 However, when the touch panel is used, when the person who is watching strongly presses the glass substrate or the touch panel is dropped, there is a possibility that the glass substrate or the like is broken to cause the debris to splash. Therefore, the touch panel has a problem that when the glass substrate or the like is splashed, the finger of the person who is scratched and scratched may cause injury to the person who is watching, and the debris may also damage the back side of the touch panel. LCD display The reason for the component. The above problems also exist in other types of touch panels such as resistive film type and electromagnetic induction type.

專利文獻 Patent literature

專利文獻1：特開2011-76386號公報。 Patent Document 1: JP-A-2011-76386.

鑒於上述情況，本發明的目的在於提供一種可在玻璃基板等破損的情況下，有效地防止其碎片等飛濺的硬塗層膜及使用該硬塗層膜的觸控面板。 In view of the above, an object of the present invention is to provide a hard coat film which can effectively prevent splashing of chips or the like when the glass substrate or the like is broken, and a touch panel using the hard coat film.

為解決上述課題，本發明提供的硬塗層膜具有透明的基體材料層、層疊在該基體材料層的一面的硬塗層、以及層疊在該基體材料層的另一面的黏接層，面內延遲值(Ro)為100 nm以下，並且厚度方向延遲值(Rth)為200 nm以下。 In order to solve the above problems, the hard coat film provided by the present invention has a transparent base material layer, a hard coat layer laminated on one surface of the base material layer, and an adhesive layer laminated on the other side of the base material layer, in-plane. The retardation value (Ro) is 100 nm or less, and the thickness direction retardation value (Rth) is 200 nm or less.

由於硬塗層膜具備基體材料層、硬塗層和黏接層，通過該黏接層例如將該硬塗層膜貼附於觸控面板的玻璃基板，即使在該玻璃基板等破損的情況下，也可以有效地防止上述碎片飛濺。此外，由於硬塗層膜在基體材料層的一面層疊有硬塗層，可提高防止觸控面板在製造或搬運時等損壞的功能，同時還可提高易使用性。由於該硬塗層膜的面內延遲值(Ro)和厚度方向延遲值(Rth)在規定的範圍內，因此可防止阻礙其他光學元件的光學功能。該硬塗層膜也可用於三維顯示裝置。在該硬塗層膜用於立體影像顯示裝置的情況下，可抑制戴偏光太陽鏡觀看時的彩虹圖案。 Since the hard coat film is provided with a base material layer, a hard coat layer, and an adhesive layer, the hard coat film is attached to the glass substrate of the touch panel by the adhesive layer, for example, even if the glass substrate or the like is broken. It can also effectively prevent the above debris from splashing. Further, since the hard coat film is laminated with a hard coat layer on one surface of the base material layer, the function of preventing damage of the touch panel during manufacture or transportation can be improved, and the ease of use can be improved. Since the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) of the hard coat film are within a predetermined range, it is possible to prevent the optical function of the other optical elements from being hindered. The hard coat film can also be used for a three-dimensional display device. In the case where the hard coat film is used for a stereoscopic image display device, it is possible to suppress a rainbow pattern when the polarized sunglasses are viewed.

對於該硬塗層膜，上述基體材料層以聚碳酸酯系樹脂、環烯烴共聚物或丙烯酸系樹脂為主要成分為宜。由此，可容易地減小面內延遲值(Ro)和厚度方向延遲值(Rth)。 此外，對於該硬塗層膜，上述基體材料層以聚碳酸酯系樹脂為主要成分可提高耐衝擊性能。對於該硬塗層膜，上述基體材料層以環烯烴共聚物為主要成分可抑制陽光直射或顯示發熱等外力引起的相位差的變化，可進行光學均一性優秀的、精細的影像顯示。 In the hard coat film, the base material layer is preferably a polycarbonate resin, a cycloolefin copolymer or an acrylic resin as a main component. Thereby, the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) can be easily reduced. Further, in the hard coat film, the base material layer is made of a polycarbonate resin as a main component to improve impact resistance. In the hard coat film, the base material layer contains a cycloolefin copolymer as a main component, and can suppress a change in phase difference due to direct sunlight or an external force such as heat generation, and can perform fine image display excellent in optical uniformity.

該硬塗層膜以上述基體材料層的平均厚度為10 μm以上、500 μm以下為宜。由於將基體材料層的平均厚度控制在上述範圍，因此，該硬塗層膜可抑制液晶顯示裝置亮度低，同時提高膜的強度、防止彎曲性能等特性，並且這樣做可有效地防止觸控面板的玻璃基板破損時等發生碎片飛濺的功能。 The hard coat film preferably has an average thickness of the base material layer of 10 μm or more and 500 μm or less. Since the average thickness of the base material layer is controlled within the above range, the hard coat film can suppress the low brightness of the liquid crystal display device, improve the strength of the film, prevent bending properties, and the like, and can effectively prevent the touch panel. The function of chip splashing occurs when the glass substrate is broken.

該硬塗層膜以霧度2%以下為宜。如此，由於霧度在上述範圍內，可抑制影像的可視性(視認性)降低、保持所顯示影像的清晰度(鮮明度)。 The hard coat film preferably has a haze of 2% or less. As described above, since the haze is within the above range, the visibility (visibility) of the image can be suppressed from being lowered, and the sharpness (sharpness) of the displayed image can be maintained.

該硬塗層膜以可見光透射率為87%以上為宜。由此，由於可見光透射率在上述範圍內，可使可見光充分透過，提高可視性。 The hard coat film preferably has a visible light transmittance of 87% or more. Thereby, since the visible light transmittance is within the above range, visible light can be sufficiently transmitted, and visibility can be improved.

通過上述黏接層將硬塗層膜貼附在觸控面板的玻璃基板的表面和/或背面為宜。由此，可有效地提高防止玻璃基板破損時產生的碎片飛濺的功能。 It is preferable that the hard coat film is attached to the surface and/or the back surface of the glass substrate of the touch panel by the above-mentioned adhesive layer. Thereby, the function of preventing splashing of debris generated when the glass substrate is broken can be effectively improved.

為解決上述課題而獲得的另一項發明是一種觸控面板，所述觸控面板具備玻璃基板、以及在所述玻璃基板的表面和/或背面通過黏接層貼附的所述硬塗層膜。 Another invention obtained to solve the above problems is a touch panel having a glass substrate and the hard coat layer attached to the surface and/or the back surface of the glass substrate through an adhesive layer. membrane.

由於硬塗層膜具備基體材料層、硬塗層和黏接層，通過該黏接層例如將所述硬塗層膜貼附於玻璃基板的背面，即使在該玻璃基板等破損的情況下，也可有效地防止上述 碎片飛濺。此外，由於硬塗層膜的基體材料層的一面層疊有硬塗層，可提高防止觸控面板在製造或搬運時等損壞的功能，同時還可提高易使用性。由於硬塗層膜的面內延遲值(Ro)和厚度方向延遲值(Rth)在規定的範圍內，上述觸控面板可防止阻礙其他光學元件的光學功能。 Since the hard coat film is provided with a base material layer, a hard coat layer, and an adhesive layer, the hard coat film is attached to the back surface of the glass substrate by the adhesive layer, for example, even if the glass substrate or the like is broken. Can also effectively prevent the above Shard splash. Further, since a hard coat layer is laminated on one surface of the base material layer of the hard coat film, the function of preventing damage of the touch panel during manufacture or handling can be improved, and the ease of use can be improved. Since the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) of the hard coat film are within a prescribed range, the touch panel described above can prevent the optical function of other optical elements from being hindered.

此外，本發明中，“面內延遲值(Ro)”為Ro=(Ny-Nx)×d所求出的值，“厚度方向延遲值(Rth)”為Rth=((Ny+Nx)/2-Nz)×d所求出的值。這裡，Nx為膜的快軸(進相軸)(與面方向平行的軸)的折射率，Ny為膜的慢軸(遅相軸)(與面方向平行且與快軸垂直的軸)的折射率，Nz為厚度方向(與面方向垂直的方向)的膜折射率，d為膜的厚度。 Further, in the present invention, the "in-plane retardation value (Ro)" is a value obtained by Ro = (Ny - Nx) × d, and the "thickness direction retardation value (Rth)" is Rth = ((Ny + Nx) / The value obtained by 2-Nz)×d. Here, Nx is the refractive index of the fast axis (phase axis) of the film (the axis parallel to the plane direction), and Ny is the slow axis (the 遅 phase axis) of the film (the axis parallel to the plane direction and perpendicular to the fast axis) The refractive index, Nz is the refractive index of the film in the thickness direction (direction perpendicular to the plane direction), and d is the thickness of the film.

此外，“霧度”為依據JIS K7136的值，“可見光透射率”為JIS K7361-1的值。 Further, "haze" is a value according to JIS K7136, and "visible light transmittance" is a value of JIS K7361-1.

如上述說明，即使在玻璃基板等破損的情況下，本發明的硬塗層膜及使用該硬塗層膜的觸控面板也可有效防止其碎片等飛濺。 As described above, even in the case where the glass substrate or the like is broken, the hard coat film of the present invention and the touch panel using the hard coat film can effectively prevent splashing of chips or the like.

下面，參照適宜的附圖對本發明的實施方式進行詳細說明。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

圖1的硬塗層膜1具有基體材料層2、硬塗層3和黏接層4。在安裝觸控面板的液晶顯示裝置中，將黏接層4貼附在觸控面板的玻璃基板的表面和/或背面而將硬塗層膜1層疊於該玻璃基板。 The hard coat film 1 of FIG. 1 has a base material layer 2, a hard coat layer 3, and an adhesive layer 4. In the liquid crystal display device in which the touch panel is mounted, the adhesive layer 4 is attached to the surface and/or the back surface of the glass substrate of the touch panel, and the hard coat film 1 is laminated on the glass substrate.

基體材料層2由於使光線透過為必要條件，因此，使其形成為透明、特別是無色透明。對構成基體材料層2的 主要成分沒有特別的限制，典型的為從聚碳酸酯系樹脂、環烯烴系樹脂、丙烯酸系樹脂、聚丙烯系樹脂及聚對苯二甲酸乙二醇酯系樹脂組成的組中選擇的物質。上述合成樹脂具有優秀的光學透明性，可使光線良好地透過。其中，作為構成基體材料層2的主要成分，較佳為聚碳酸酯系樹脂、環烯烴共聚物或丙烯酸系樹脂。作為構成基體材料層2的主要成分，通過使用聚碳酸酯系樹脂、環烯烴共聚物或丙烯酸系樹脂，可容易地減小所述硬塗層膜1的面內延遲值(Ro)和厚度方向延遲值(Rth)。此外，聚碳酸酯系樹脂具有優秀的耐衝擊性能。其結果是，該硬塗層膜1中，以聚碳酸酯系樹脂為主要成分可提高耐衝擊性能，因而進一步提高防止玻璃基板等碎片飛濺的性能。環烯烴共聚物的光彈性係數小。其結果是，該硬塗層膜1中，以環烯烴共聚物為主要成分，可在減小延遲值的同時，抑制陽光直射或顯示發熱等外力引起的相位差的變化，可進行光學均一性優秀的、精細的影像顯示。 Since the base material layer 2 is required to transmit light, it is formed to be transparent, particularly colorless and transparent. For the layer 2 constituting the base material The main component is not particularly limited, and is typically selected from the group consisting of a polycarbonate resin, a cycloolefin resin, an acrylic resin, a polypropylene resin, and a polyethylene terephthalate resin. The above synthetic resin has excellent optical transparency and allows light to pass through well. Among them, as a main component constituting the base material layer 2, a polycarbonate resin, a cycloolefin copolymer or an acrylic resin is preferable. As the main component constituting the base material layer 2, the in-plane retardation value (Ro) and the thickness direction of the hard coat film 1 can be easily reduced by using a polycarbonate resin, a cycloolefin copolymer or an acrylic resin. Delay value (Rth). Further, the polycarbonate resin has excellent impact resistance. As a result, in the hard coat film 1, the impact resistance performance can be improved by using a polycarbonate resin as a main component, and thus the performance of preventing splashing of pieces such as a glass substrate can be further improved. The cycloolefin copolymer has a small photoelastic coefficient. As a result, in the hard coat film 1, the cycloolefin copolymer is used as a main component, and the retardation value can be reduced, and the phase difference caused by an external force such as direct sunlight or heat generation can be suppressed, and optical uniformity can be performed. Excellent, fine image display.

在不損害透明性及所期望的強度的條件下，基體材料層2可含有其他任意成分，較佳含有由上述合成樹脂組成的主要成分占90質量%以上，進一步較佳含有由上述合成樹脂組成的主要成分占98質量%以上。這裡，作為任意成分的例子，可列舉紫外線吸收劑、穩定劑、潤滑劑、加工助劑、增塑劑、耐衝擊助劑、相位差減小劑、消光劑、抗菌劑、防黴劑等。 The base material layer 2 may contain other optional components without impairing the transparency and the desired strength, and preferably contains 90% by mass or more of the main component composed of the above synthetic resin, and further preferably contains the above synthetic resin. The main component accounts for 98% by mass or more. Here, examples of the optional component include an ultraviolet absorber, a stabilizer, a lubricant, a processing aid, a plasticizer, an impact modifier, a phase difference reducing agent, a matting agent, an antibacterial agent, and an antifungal agent.

作為形成基體材料層2的聚碳酸酯系樹脂，沒有特別限定，可僅為直鏈聚碳酸酯系樹脂或支鏈聚碳酸酯系樹脂，也可為直鏈聚碳酸酯系樹脂與支鏈聚碳酸酯系樹脂製 成的聚碳酸酯系樹脂。 The polycarbonate resin forming the base material layer 2 is not particularly limited, and may be only a linear polycarbonate resin or a branched polycarbonate resin, or a linear polycarbonate resin and a branched polymer. Carbonate resin A polycarbonate resin.

作為直鏈聚碳酸酯系樹脂，通過公知的光氣法或熔融法製造的直鏈芳香族聚碳酸酯系樹脂由碳酸酯成分和雙酚成分製成。作為導入碳酸酯成分的前體物質，可列舉例如，光氣、碳酸二苯酯等。此外，作為雙酚，可列舉例如2,2-二(4-羥基苯基)丙烷、2,2-二(3,5-二甲基-4-羥基苯基)丙烷、1,1-二(4-羥基苯基)環己烷、1,1-二(3,5-二甲基-4-羥基苯基)環己烷、1,1-二(4-羥基苯基)癸烷、1,1-二(4-羥基苯基)丙烷、1,1-二(4-羥基苯基)環癸烷、1,1-二(3,5-二甲基-4-羥基苯基)環癸烷、4,4'-二羥基二苯醚、4,4'-硫代二苯酚、4,4'-二羥基-3,3-二氯二苯醚等。上述物質可單獨使用或2種以上組合使用。上述的直鏈聚碳酸酯系樹脂通過例如美國專利第3989672號記載的方法等製造，較佳其折射率為1.57以上、1.59以下。 The linear aromatic polycarbonate-based resin produced by a known phosgene method or a melting method is made of a carbonate component and a bisphenol component. Examples of the precursor to introduce the carbonate component include phosgene, diphenyl carbonate, and the like. Further, examples of the bisphenol include 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, and 1,1-di. (4-hydroxyphenyl)cyclohexane, 1,1-bis(3,5-dimethyl-4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)decane, 1,1-bis(4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)cyclodecane, 1,1-bis(3,5-dimethyl-4-hydroxyphenyl) Cyclodecane, 4,4'-dihydroxydiphenyl ether, 4,4'-thiodiphenol, 4,4'-dihydroxy-3,3-dichlorodiphenyl ether, and the like. These may be used alone or in combination of two or more. The above-mentioned linear polycarbonate-based resin is produced by, for example, the method described in U.S. Patent No. 3,896,672, and preferably has a refractive index of 1.57 or more and 1.59 or less.

作為支鏈聚碳酸酯系樹脂，是使用支化劑製造的聚碳酸酯系樹脂，作為支化劑，可列舉例如間苯三酚、偏苯三酸、1,1,1-三(4-羥基苯基)乙烷、1,1,2-三(4-羥基苯基)乙烷、1,1,2-三(4-羥基苯基)丙烷、1,1,1-三(4-羥基苯基)甲烷、1,1,1-三(4-羥基苯基)丙烷、1,1,1-三(2-甲基-4-羥基苯基)甲烷、1,1,1-三(2-甲基-4-羥基苯基)乙烷、1,1,1-三(3-甲基-4-羥基苯基)甲烷、1,1,1-三(3-甲基-4-羥基苯基)乙烷、1,1,1-三(3,5-二甲基-4-羥基苯基)甲烷、1,1,1-三(3,5-二甲基-4-羥基苯基)乙烷、1,1,1-三(3-氯-4-羥基苯基)甲烷、1,1,1-三(3-氯-4-羥基苯基)乙烷、1,1,1-三(3,5-二氯-4-羥基苯基)甲烷、1,1,1-三(3,5-二氯-4-羥基苯基)乙烷、1,1,1-三(3-溴-4-羥基苯基)甲烷、1,1,1-三(3-溴-4-羥基苯基)乙烷、1,1,1-三(3,5-二溴-4- 羥基苯基)甲烷、1,1,1-三(3,5-二溴-4-羥基苯基)乙烷、4,4'-二羥基-2,5-二羥基二苯醚等。 The branched polycarbonate resin is a polycarbonate resin produced by using a branching agent, and examples of the branching agent include phloroglucinol, trimellitic acid, and 1,1,1-tris(4- Hydroxyphenyl)ethane, 1,1,2-tris(4-hydroxyphenyl)ethane, 1,1,2-tris(4-hydroxyphenyl)propane, 1,1,1-tris(4- Hydroxyphenyl)methane, 1,1,1-tris(4-hydroxyphenyl)propane, 1,1,1-tris(2-methyl-4-hydroxyphenyl)methane, 1,1,1-three (2-methyl-4-hydroxyphenyl)ethane, 1,1,1-tris(3-methyl-4-hydroxyphenyl)methane, 1,1,1-tris(3-methyl-4 -hydroxyphenyl)ethane, 1,1,1-tris(3,5-dimethyl-4-hydroxyphenyl)methane, 1,1,1-tris(3,5-dimethyl-4- Hydroxyphenyl)ethane, 1,1,1-tris(3-chloro-4-hydroxyphenyl)methane, 1,1,1-tris(3-chloro-4-hydroxyphenyl)ethane, 1, 1,1-tris(3,5-dichloro-4-hydroxyphenyl)methane, 1,1,1-tris(3,5-dichloro-4-hydroxyphenyl)ethane, 1,1,1 -Tris(3-bromo-4-hydroxyphenyl)methane, 1,1,1-tris(3-bromo-4-hydroxyphenyl)ethane, 1,1,1-tris(3,5-dibromo -4- Hydroxyphenyl)methane, 1,1,1-tris(3,5-dibromo-4-hydroxyphenyl)ethane, 4,4'-dihydroxy-2,5-dihydroxydiphenyl ether, and the like.

上述支鏈聚碳酸酯系樹脂為可列舉例如特開平03-182524號公報中列舉的方法進行製造：將含有由芳香族雙酚類、上述支化劑和光氣衍生的聚碳酸酯低聚物、芳香族雙酚類以及封端劑的反應混合液渦流攪拌進行反應，當反應混合液的黏度上升時，加入鹼性水溶液與反應混合液形成層流進行反應而製造。本發明的樹脂組合物的支鏈聚碳酸酯系樹脂含有聚碳酸酯系樹脂為5重量%以上、80重量%以下的範圍，較佳10重量%以上、60重量%以下的範圍。這是因為支鏈聚碳酸酯系樹脂不到10重量%，會造成拉伸黏度低，以擠出成型的成型困難；超過80重量%，會造成樹脂的剪切黏度變高、成形加工性低。 The above-mentioned branched polycarbonate-based resin is produced by a method exemplified in JP-A-03-182524, which contains a polycarbonate oligomer derived from an aromatic bisphenol, the above-mentioned branching agent, and phosgene. The reaction mixture of the aromatic bisphenol and the terminal blocking agent is vortex-stirred and reacted, and when the viscosity of the reaction mixture rises, a basic aqueous solution is added to the reaction mixture to form a laminar flow and reacted. The branched polycarbonate resin of the resin composition of the present invention contains the polycarbonate resin in a range of 5 wt% or more and 80 wt% or less, preferably 10 wt% or more and 60 wt% or less. This is because the branched polycarbonate resin is less than 10% by weight, and the tensile viscosity is low, and molding by extrusion molding is difficult. When it exceeds 80% by weight, the shear viscosity of the resin is high and the formability is low. .

形成基體材料層2的環烯烴共聚物為環烯烴與乙烯等烯烴的共聚物的非結晶性環烯烴系樹脂。作為環烯烴，存在多環的環烯烴和單環的環烯烴。作為多環的環烯烴可列舉降冰片烯、甲基降冰片烯、二甲基降冰片烯、乙基降冰片烯、亞乙基降冰片烯、丁基降冰片烯、雙環戊二烯、二氫雙環戊二烯、甲基雙環戊二烯、二甲基雙環戊二烯、四環十二碳烯、甲基四環十二碳烯、二甲基環十四烯、環戊二烯三聚體、環戊二烯四聚體等。此外，作為單環的環烯烴，可列舉環丁烯、環戊烯、環辛烯、環辛二烯、環辛三烯、環十二碳三烯等。 The cycloolefin copolymer forming the matrix material layer 2 is a non-crystalline cyclic olefin resin which is a copolymer of a cycloolefin and an olefin such as ethylene. As the cyclic olefin, a polycyclic cycloolefin and a monocyclic cycloolefin are present. Examples of the polycyclic cyclic olefin include norbornene, methylnorbornene, dimethylnorbornene, ethylnorbornene, ethylidene norbornene, butylnorbornene, dicyclopentadiene, and Hydrogen dicyclopentadiene, methyl dicyclopentadiene, dimethyl dicyclopentadiene, tetracyclododecene, methyltetracyclododecene, dimethylcyclotetradecene, cyclopentadiene Polymer, cyclopentadiene tetramer, and the like. Further, examples of the monocyclic cycloolefin include cyclobutene, cyclopentene, cyclooctene, cyclooctadiene, cyclooctanetriene, and cyclododecatriene.

作為環烯烴共聚物的光彈性係數，沒有特別限制，例如10×10-12/Pa以下，較佳為9×10-12/Pa以下，特別較佳為8×20-12/Pa以下。若環烯烴共聚物的光彈性係數超過上述範 圍，會使在高溫高濕情況下的相位差變化增大，有降低可視性的可能性。另一方面，若環烯烴共聚物的光彈性係數在上述範圍內，可降低在高溫高濕情況下的相位差變化，從而抑制畫面的可視性降低，可進行精細的圖像顯示。 The photoelastic coefficient of the cycloolefin copolymer is not particularly limited, and is, for example, 10 × 10 -12 /Pa or less, preferably 9 × 10 -12 /Pa or less, particularly preferably 8 × 20 -12 /Pa or less. When the photoelastic coefficient of the cycloolefin copolymer exceeds the above range, the phase difference change in the case of high temperature and high humidity is increased, and the visibility may be lowered. On the other hand, when the photoelastic coefficient of the cycloolefin copolymer is within the above range, the phase difference change in the case of high temperature and high humidity can be reduced, and the visibility of the screen can be suppressed from being lowered, and fine image display can be performed.

此外，“光彈性係數”為表示由外力引起的折射率變化的係數，為CR[/Pa]=△n/σR求出的值。此處，σR為拉伸應力[Pa]、△n為施加應力時的折射率、△n由下式定義。 Further, the "photoelastic coefficient" is a coefficient indicating a change in refractive index caused by an external force, and is a value obtained by C R [/Pa] = Δn / σ R . Here, σ R is a tensile stress [Pa], Δn is a refractive index when stress is applied, and Δn is defined by the following formula.

△n=n1-n2 △n=n 1 -n 2

(式中，n1為與拉伸應力平行方向的折射率，n2為與拉伸應力垂直方向的折射率。) (wherein n 1 is a refractive index parallel to the tensile stress, and n 2 is a refractive index perpendicular to the tensile stress.)

形成基體材料層2的丙烯酸系樹脂為具有丙烯酸或甲基丙烯酸來源的骨架的樹脂。作為丙烯酸系樹脂的例子，沒有特別限制，可列舉聚甲基丙烯酸甲酯等聚(甲基)丙烯酸酯、甲基丙烯酸甲酯-(甲基)丙烯酸共聚物、甲基丙烯酸甲酯-(甲基)丙烯酸酯共聚物、甲基丙烯酸甲酯-丙烯酸酯-(甲基)丙烯酸共聚物、(甲基)丙烯酸甲酯-苯乙烯共聚物、具有脂環族烴基的聚合物(例如甲基丙烯酸甲酯-甲基丙烯酸環己酯共聚物、甲基丙烯酸甲酯-(甲基)丙烯酸降冰片烯酯共聚物)等。上述的丙烯酸系樹脂中，較佳聚(甲基)丙烯酸甲酯等聚(甲基)丙烯酸酯C1-6烷基酯，進一步較佳甲基丙烯酸甲酯系樹脂。 The acrylic resin forming the base material layer 2 is a resin having a skeleton derived from acrylic acid or methacrylic acid. The acrylic resin is not particularly limited, and examples thereof include poly(meth)acrylate such as polymethyl methacrylate, methyl methacrylate-(meth)acrylic acid copolymer, and methyl methacrylate-(A). Acrylate copolymer, methyl methacrylate-acrylate-(meth)acrylic acid copolymer, methyl (meth)acrylate-styrene copolymer, polymer having an alicyclic hydrocarbon group (such as methacrylic acid) Methyl ester-cyclohexyl methacrylate copolymer, methyl methacrylate-(meth)acrylic acid norbornene ester copolymer) and the like. Among the above acrylic resins, a poly(meth)acrylate C1-6 alkyl ester such as poly(methyl) acrylate is preferable, and a methyl methacrylate resin is further preferable.

形成基體材料層2的聚丙烯系樹脂為具有丙烯來源的骨架的樹脂。作為聚丙烯系樹脂的例子，沒有特別限制，可列舉丙烯的均聚物，此外，可列舉從乙烯和碳原子數4-12的α-烯烴所組成的組中選擇的1種以上的單體與丙烯的共聚物等。 The polypropylene-based resin forming the base material layer 2 is a resin having a skeleton derived from propylene. The example of the polypropylene-based resin is not particularly limited, and examples thereof include a homopolymer of propylene, and one or more monomers selected from the group consisting of ethylene and an α-olefin having 4 to 12 carbon atoms. Copolymer with propylene, etc.

形成基體材料層2的聚對苯二甲酸乙二醇酯系樹脂為對苯二甲酸與乙二醇反應得到的聚合物。聚對苯二甲酸乙二醇酯系樹脂也可含有其他的共聚單體，較佳聚對苯二甲酸乙二醇酯的重複單元為80mol%以上。聚對苯二甲酸乙二醇酯可以是例如將對苯二甲酸二甲酯和乙二醇投入反應器中，緩慢升高內部溫度進行酯交換反應後，將反應產物轉移至聚合反應器，高溫真空條件下進行聚合反應產生的。 The polyethylene terephthalate resin forming the base material layer 2 is a polymer obtained by reacting terephthalic acid with ethylene glycol. The polyethylene terephthalate resin may contain other comonomers, and the repeating unit of polyethylene terephthalate is preferably 80 mol% or more. The polyethylene terephthalate may be, for example, the dimethyl terephthalate and ethylene glycol are put into the reactor, and the internal temperature is slowly increased to carry out the transesterification reaction, and the reaction product is transferred to the polymerization reactor at a high temperature. The polymerization is carried out under vacuum.

基體材料層2的厚度(平均厚度)沒有特別限制，例如較佳為10 μm以上、500 μm以下，進一步較佳為20 μm以上、300 μm以下，特佳為25 μm以上、125 μm以下。若基體材料層2的厚度未達到上述範圍，會使膜的強度、防止彎曲性能等特性降低，有可能降低在觸控面板的玻璃基板破損時等防止產生的碎片飛濺的功能。此外，若基體材料層2的厚度超過上述範圍，有可能使液晶顯示裝置的亮度降低，此外，也與薄化液晶顯示裝置的要求不符。另一方面，該硬塗層膜1中，由於基體材料層的平均厚度在上述範圍內，可抑制液晶顯示裝置的亮度降低，同時提高膜的強度、防止彎曲性能等特性，並且在觸控面板的玻璃基板破損時等，可發揮有效地防止產生的碎片飛濺的功能。 The thickness (average thickness) of the base material layer 2 is not particularly limited, and is, for example, preferably 10 μm or more and 500 μm or less, more preferably 20 μm or more and 300 μm or less, and particularly preferably 25 μm or more and 125 μm or less. When the thickness of the base material layer 2 is less than the above range, characteristics such as strength of the film and prevention of bending property are lowered, and there is a possibility that the function of preventing splashing of the generated particles when the glass substrate of the touch panel is broken may be reduced. Further, when the thickness of the base material layer 2 exceeds the above range, the brightness of the liquid crystal display device may be lowered, and the thickness of the liquid crystal display device may be inconsistent with the requirements of the thinned liquid crystal display device. On the other hand, in the hard coat film 1, since the average thickness of the base material layer is within the above range, it is possible to suppress the decrease in the brightness of the liquid crystal display device, while improving the strength of the film, preventing the bending property, and the like, and in the touch panel. When the glass substrate is damaged, the glass substrate can be effectively prevented from splashing.

作為基體材料層2，通常可使用算術平均表面粗糙度(Ra)為0.02以上、0.06以下的物質。此外，對於基體材料層2，根據需要可進行無光處理。上述的實施無光處理後的基體材料層2的算術平均表面粗糙度(Ra)較佳為0.07以上、2以下，進一步較佳為0.1以上、1以下。通過將基體材料層2的表面粗糙度控制在上述範圍內，防止在製造原膜後的處理中的損壞，提高處理性。此外，一般情況下， 在對製造出的原膜進行捲曲時，有必要在膜的寬度方向的兩端進行壓紋加工(滾花加工處理)防止成塊。在對膜進行滾花加工處理時，由於膜兩端的處理區域無法使用，必須將該部分剪裁廢棄。此外，在膜的捲曲作業中，也有為了防止損壞通過保護膜進行遮蔽的情況。但是，由於基體材料層2的算術平均表面粗糙度在上述所規定的範圍內，不進行滾花加工處理也可防止成塊，簡化了製造步驟，膜寬度方向的兩端部分也能使用，同時不發生膜故障，可進行跨越長尺寸的捲曲。此外，由於基體材料層2具有適度的表面粗糙度，可有效地抑制捲曲時的損壞，因此不需要上述的遮蔽。 As the base material layer 2, generally, an arithmetic mean surface roughness (Ra) of 0.02 or more and 0.06 or less can be used. Further, as for the base material layer 2, a matte treatment can be performed as needed. The arithmetic mean surface roughness (Ra) of the base material layer 2 subjected to the matte treatment described above is preferably 0.07 or more and 2 or less, and more preferably 0.1 or more and 1 or less. By controlling the surface roughness of the base material layer 2 within the above range, damage during the treatment after the production of the original film is prevented, and workability is improved. In addition, in general, When the original film to be produced is crimped, it is necessary to perform embossing (knurling processing) at both ends in the width direction of the film to prevent lumping. When the film is subjected to knurling processing, since the processing area at both ends of the film cannot be used, the portion must be cut and discarded. Further, in the curling operation of the film, there is also a case where the film is shielded by the protective film in order to prevent damage. However, since the arithmetic mean surface roughness of the base material layer 2 is within the above-specified range, the knurling process can be prevented, and the simplification can be prevented, and the manufacturing steps can be simplified, and both end portions in the film width direction can be used. No film failure occurs, and curling over a long dimension can be performed. Further, since the base material layer 2 has a moderate surface roughness, damage at the time of curling can be effectively suppressed, and thus the above-described shading is not required.

基體材料層2製造方法沒有特別限制，例如，合成樹脂的片狀原料及增塑劑等添加劑經目前公知的混合方法進行混合，由預先製備好的熱塑性樹脂組合物可製造基體材料層2。例如，該熱塑性樹脂組合物通過如下方法獲得：使用萬能混合機等混合機預混合後，通過擠出混揉所得混合物，得到該熱塑性樹脂組合物。該情況下，用於擠出混揉的混煉機，沒有特別限制，例如，可使用單軸擠出機、雙軸擠出機等擠出機或加壓捏和機等目前公知的混煉機。 The method of producing the base material layer 2 is not particularly limited. For example, an additive such as a sheet-like raw material of a synthetic resin and a plasticizer is mixed by a conventionally known mixing method, and the base material layer 2 can be produced from a thermoplastic resin composition prepared in advance. For example, the thermoplastic resin composition is obtained by premixing using a mixer such as a universal mixer, and then kneading the resulting mixture by extrusion to obtain the thermoplastic resin composition. In this case, the kneading machine for extrusion kneading is not particularly limited, and for example, a conventionally known kneading such as an extruder such as a single-screw extruder or a twin-screw extruder or a kneading kneader can be used. machine.

作為基體材料層2的成型方法，可列舉例如，溶液澆鑄法(溶液流延法)、熔融擠出法、壓延法、壓縮成型法等公知的方法。上述方法中，較佳溶液澆鑄法(溶液流延法)、熔融擠出法。此時，也可使用預先擠出混揉的熱塑性樹脂組合物，合成樹脂、增塑劑等其他添加劑分別溶於溶劑再製成均一的混合液後，供給溶液澆鑄法(溶液流延法)、熔融擠出法的膜成型步驟。此外，為了將基體材料層2的延 遲值和硬塗層膜1的延遲值抑制在一定範圍，例如，可將熔融樹脂通過在寬度方向上保持均一溫度的冷卻輥以及以環狀帶夾成圓弧形進行冷卻。 The molding method of the base material layer 2 may, for example, be a known method such as a solution casting method (solution casting method), a melt extrusion method, a calendering method, or a compression molding method. Among the above methods, a solution casting method (solution casting method) or a melt extrusion method is preferred. In this case, a thermoplastic resin composition which is pre-extruded and kneaded may be used, and other additives such as a synthetic resin and a plasticizer may be dissolved in a solvent to prepare a uniform mixed solution, and then supplied to a solution casting method (solution casting method). Film forming step of melt extrusion. In addition, in order to extend the base material layer 2 The retardation value and the retardation value of the hard coat film 1 are suppressed to a certain range. For example, the molten resin can be cooled by a cooling roll that maintains a uniform temperature in the width direction and a circular arc shape in an endless belt.

作為用於溶液澆鑄法(溶液流延法)的溶劑，可列舉氯仿、二氯甲烷等含氯溶劑；甲苯、二甲苯、苯及它們的混合溶劑等芳香族溶劑；甲醇、乙醇、異丙醇、正丁醇、仲丁醇等醇類溶劑；甲基纖溶劑、乙基纖溶劑、丙基纖溶劑、二甲基甲醯胺、二甲亞碸、二噁烷、環己酮、四氫呋喃、丙酮、甲基乙基酮(MEK)、乙酸乙酯、***等。上述溶劑可僅使用1種，也可2種以上合用。作為進行溶液澆鑄法(溶液流延法)的裝置，可列舉例如滾筒式澆鑄機、帶式澆鑄機、旋轉塗布機等。 Examples of the solvent used in the solution casting method (solution casting method) include a chlorine-containing solvent such as chloroform or dichloromethane; an aromatic solvent such as toluene, xylene, benzene or a mixed solvent thereof; methanol, ethanol, and isopropanol; , alcohol solvent such as n-butanol or sec-butanol; methyl fiber solvent, ethyl fiber solvent, propyl fiber solvent, dimethylformamide, dimethyl hydrazine, dioxane, cyclohexanone, tetrahydrofuran, Acetone, methyl ethyl ketone (MEK), ethyl acetate, diethyl ether, and the like. These solvents may be used alone or in combination of two or more. Examples of the apparatus for performing the solution casting method (solution casting method) include a drum type casting machine, a belt casting machine, a spin coater, and the like.

作為熔融擠出法，可列舉T型壓鑄法、充氣吹脹法等。熔融擠出時，膜的成型溫度較佳為150℃以上、350℃以下，進一步較佳為200℃以上、300℃以下。通過T型壓鑄法使膜成型的情況下，在公知的單軸擠出機或雙軸擠出機的前端安裝T型模具，將擠出為膜狀的膜捲曲，可得到捲筒狀的膜。此時，將捲曲輥的溫度適宜調整，通過施加向擠出方向的拉伸，可作為單軸拉伸步驟。此外，通過施加與擠出方向垂直方向的膜拉伸步驟，可施加雙軸依次拉伸、雙軸同時拉伸等步驟。 Examples of the melt extrusion method include a T-die casting method, an inflation inflation method, and the like. At the time of melt extrusion, the film forming temperature is preferably 150 ° C or more and 350 ° C or less, and more preferably 200 ° C or more and 300 ° C or less. When the film is molded by a T-die casting method, a T-die is attached to the tip end of a known single-axis extruder or a twin-screw extruder, and a film extruded into a film shape is crimped to obtain a roll-shaped film. . At this time, the temperature of the crimping roller is appropriately adjusted, and by stretching in the extrusion direction, it can be used as a uniaxial stretching step. Further, by applying a film stretching step perpendicular to the extrusion direction, a step of biaxial sequential stretching, simultaneous biaxial stretching, and the like can be applied.

作為增塑劑，沒有特別限制，為了在基體材料層2不發生模糊、或為了不從基體材料層2滲出或揮發，較佳具有可與合成樹脂通過氫化等相互作用的官能團的物質。作為上述增塑劑的例子，沒有特別限制，可列舉磷酸酯系增塑劑、鄰苯二甲酸酯系增塑劑、偏苯三酸酯系增塑劑、均 苯四甲酸系增塑劑、多元醇系增塑劑、羥基乙酸酯系增塑劑、檸檬酸酯系增塑劑、脂肪酸酯系增塑劑、羧酸酯系增塑劑、聚酯系增塑劑等。 The plasticizer is not particularly limited, and is preferably a substance having a functional group capable of interacting with a synthetic resin by hydrogenation or the like in order to prevent turbidity or volatilization from the base material layer 2 in the base material layer 2. The plasticizer is not particularly limited, and examples thereof include a phosphate ester plasticizer, a phthalate plasticizer, and a trimellitate plasticizer. Pyromellitic acid plasticizer, polyol plasticizer, glycolic acid plasticizer, citric acid ester plasticizer, fatty acid ester plasticizer, carboxylate plasticizer, polyester It is a plasticizer and the like.

硬塗層3層疊於基體材料層2的一面，可提高該硬塗層膜1的硬度。作為形成硬塗層3的材料，沒有特別限制。硬塗層3可僅由樹脂形成，其中也可含有二氧化矽微粒、聚合引發劑等。 The hard coat layer 3 is laminated on one surface of the base material layer 2, and the hardness of the hard coat film 1 can be improved. The material forming the hard coat layer 3 is not particularly limited. The hard coat layer 3 may be formed only of a resin, and may also contain cerium oxide fine particles, a polymerization initiator, or the like.

作為形成硬塗層3的樹脂，可列舉例如熱固性樹脂或活性能量射線固化樹脂等。 Examples of the resin forming the hard coat layer 3 include a thermosetting resin, an active energy ray-curable resin, and the like.

硬塗層3例如可以是按照如下形成：將含有活性能量射線固化樹脂的可聚合單體或可聚合低聚物的塗布組合物塗布於基體材料層2的一個表面，可聚合單體或可聚合低聚物通過交聯反應和/或聚合反應形成硬塗層3。 The hard coat layer 3 may be formed, for example, by coating a coating composition containing a polymerizable monomer or a polymerizable oligomer containing an active energy ray-curable resin on one surface of the base material layer 2, polymerizable monomer or polymerizable. The oligomer forms a hard coat layer 3 by a crosslinking reaction and/or a polymerization reaction.

作為活性能量射線固化型可聚合單體或可聚合低聚物的官能團，較佳紫外線、電子束或放射線可聚合的基團，特別較佳紫外線可聚合官能團。作為紫外線可聚合官能團，可列舉(甲基)丙烯醯基、乙烯基、苯乙烯基、烯丙基等乙烯基型不飽和可聚合官能團等。 As the functional group of the active energy ray-curable polymerizable monomer or polymerizable oligomer, an ultraviolet ray, an electron beam or a radiation polymerizable group is preferable, and an ultraviolet ray polymerizable functional group is particularly preferable. Examples of the ultraviolet polymerizable functional group include a vinyl type unsaturated polymerizable functional group such as a (meth)acryl fluorenyl group, a vinyl group, a styryl group, and an allyl group.

作為上述塗布組合物，沒有特別限制，較佳以丙烯酸單體或聚胺酯丙烯酸酯低聚物為主要成分的組合物。因為硬塗層3由以上述單體或低聚物為主要成分的組合物形成，所以可提高硬度。其中，硬塗層3特別較佳由同時含有聚胺酯丙烯酸酯和(甲基)丙烯酸酯的組合物形成的產品。 The coating composition is not particularly limited, and a composition containing an acrylic monomer or a polyurethane acrylate oligomer as a main component is preferred. Since the hard coat layer 3 is formed of a composition containing the above monomer or oligomer as a main component, the hardness can be improved. Among them, the hard coat layer 3 is particularly preferably a product formed of a composition containing both a polyurethane acrylate and a (meth) acrylate.

作為形成硬塗層3的聚胺酯丙烯酸酯和(甲基)丙烯酸酯的總計含量，較佳為45質量%以上、99質量%以下，進一步較佳50質量%以上、95質量%以下，特佳60質量%以 上、90質量%以下。形成上述硬塗層3的聚胺酯丙烯酸酯和(甲基)丙烯酸酯的總計含量若超過上述上限，可能引起光聚合的開始變得緩慢，使生產性降低。此外，形成上述硬塗層3的聚胺酯丙烯酸酯和(甲基)丙烯酸酯的總計含量若未達到上述下限，可能使彈性、抗磨損性、耐擦傷性能降低。另一方面，形成上述硬塗層3的聚胺酯丙烯酸酯和(甲基)丙烯酸酯的總計含量在上述範圍內，可提高生產性，同時保持適宜的彈性、抗磨損性、耐擦傷性能等。 The total content of the polyurethane acrylate and the (meth) acrylate forming the hard coat layer 3 is preferably 45 mass% or more and 99 mass% or less, more preferably 50 mass% or more and 95 mass% or less, particularly preferably 60. % by mass Up, 90% by mass or less. When the total content of the polyurethane acrylate and the (meth) acrylate forming the hard coat layer 3 exceeds the above upper limit, the start of photopolymerization may be slow, and the productivity may be lowered. Further, if the total content of the polyurethane acrylate and the (meth) acrylate forming the hard coat layer 3 is less than the above lower limit, the elasticity, abrasion resistance, and scratch resistance may be lowered. On the other hand, the total content of the polyurethane acrylate and the (meth) acrylate forming the hard coat layer 3 is within the above range, and productivity can be improved while maintaining appropriate elasticity, abrasion resistance, scratch resistance, and the like.

作為上述聚胺酯丙烯酸酯，沒有特別限制，單體或低聚物的任意一種皆可。此外，作為聚胺酯丙烯酸酯的官能團數，沒有特別限制，單官能團或多官能團皆可，較佳2個官能團以上、6個官能團以下，進一步較佳2個官能團以上、3個官能團以下。硬塗層3中聚胺酯丙烯酸酯的官能團數在上述範圍內，可適宜地保持硬度和伸長率的平衡。聚胺酯丙烯酸酯可單獨使用，也可2種以上組合使用。 The polyurethane acrylate is not particularly limited, and may be any of a monomer or an oligomer. In addition, the number of the functional groups of the polyurethane acrylate is not particularly limited, and may be a monofunctional group or a polyfunctional group, preferably two functional groups or more and six or less functional groups, and more preferably two functional groups or more and three or less functional groups. The number of functional groups of the polyurethane acrylate in the hard coat layer 3 is within the above range, and the balance of hardness and elongation can be suitably maintained. The polyurethane acrylate may be used singly or in combination of two or more.

作為聚胺酯丙烯酸酯的伸長率，較佳為20%以上、80%以下，進一步較佳為25%以上、75%以下。聚胺酯丙烯酸酯的伸長率若超過上述上限，可能降低硬塗層3的耐久性。此外，聚胺酯丙烯酸酯的伸長率若未達到上述下限，可能在成型時發生破裂。另一方面，聚胺酯丙烯酸酯的伸長率若在上述範圍內，可在提高耐久性的同時，防止成型時破裂的發生。 The elongation of the polyurethane acrylate is preferably 20% or more and 80% or less, and more preferably 25% or more and 75% or less. If the elongation of the polyurethane acrylate exceeds the above upper limit, the durability of the hard coat layer 3 may be lowered. Further, if the elongation of the polyurethane acrylate does not reach the above lower limit, cracking may occur at the time of molding. On the other hand, when the elongation of the polyurethane acrylate is within the above range, the durability can be improved and the occurrence of cracking during molding can be prevented.

此外，此處所說的“伸長率”為依據JIS K5600測定的值。 Further, the "elongation ratio" referred to herein is a value measured in accordance with JIS K5600.

作為由聚胺酯丙烯酸酯形成的樹脂的玻璃化轉變溫度，沒有特別限制，較佳為40℃以上、100℃以下，進一步 較佳為40℃以上、80℃以下。由聚胺酯丙烯酸酯形成的樹脂的玻璃化轉變溫度在上述範圍內，可提高常溫下硬塗層3的硬度和耐久性。 The glass transition temperature of the resin formed of the polyurethane acrylate is not particularly limited, but is preferably 40° C. or higher and 100° C. or lower. Further It is preferably 40 ° C or more and 80 ° C or less. The glass transition temperature of the resin formed of the polyurethane acrylate is within the above range, and the hardness and durability of the hard coat layer 3 at normal temperature can be improved.

作為形成硬塗層3的聚胺酯丙烯酸酯的含量，沒有特別限制，較佳為10質量%以上、90質量%以下，進一步較佳為15質量%以上、85質量%以下，特佳為20質量%以上、80質量%以下。形成硬塗層3的聚胺酯丙烯酸酯的含量若超過上述上限，可能降低耐磨損性和塗膜硬度。此外，形成硬塗層3的聚胺酯丙烯酸酯的含量若未達到上述下限，可能降低彈性，易發生破裂。另一方面，形成硬塗層3的聚胺酯丙烯酸酯的含量若在上述範圍內，可適宜地保持耐磨損性和塗膜硬度，同時保持適度的彈性，抑制破裂的發生。 The content of the polyurethane acrylate forming the hard coat layer 3 is not particularly limited, but is preferably 10% by mass or more and 90% by mass or less, more preferably 15% by mass or more and 85% by mass or less, and particularly preferably 20% by mass or less. Above 80% by mass. When the content of the polyurethane acrylate forming the hard coat layer 3 exceeds the above upper limit, abrasion resistance and film hardness may be lowered. Further, if the content of the polyurethane acrylate forming the hard coat layer 3 does not reach the above lower limit, the elasticity may be lowered and cracking may occur. On the other hand, when the content of the polyurethane acrylate forming the hard coat layer 3 is within the above range, the abrasion resistance and the coating film hardness can be suitably maintained while maintaining moderate elasticity to suppress the occurrence of cracking.

作為上述(甲基)丙烯酸酯，沒有特別限制，可為單體或低聚物的任意一種。作為(甲基)丙烯酸酯的官能團數，沒有特別限制，單官能團或多官能團皆可。此外，硬塗層3通過使用3個官能團以上的(甲基)丙烯酸酯可提高耐久性。此外，(甲基)丙烯酸酯為含有極性基團的分子結構或低極性的分子結構皆可。(甲基)丙烯酸酯可單獨使用，也可2種以上組合使用。 The (meth) acrylate is not particularly limited, and may be any of a monomer or an oligomer. The number of functional groups of the (meth) acrylate is not particularly limited, and a monofunctional group or a polyfunctional group may be used. Further, the hard coat layer 3 can improve durability by using three or more functional groups of (meth) acrylate. Further, the (meth) acrylate may be a molecular structure containing a polar group or a molecular structure having a low polarity. The (meth) acrylate may be used singly or in combination of two or more kinds.

作為(甲基)丙烯酸酯的極性基團，可列舉羥基、羧基、胺基、醯胺基等。 Examples of the polar group of the (meth) acrylate include a hydroxyl group, a carboxyl group, an amine group, and a decylamino group.

作為含有羥基的(甲基)丙烯酸酯，可列舉(甲基)丙烯酸2-羥乙酯、(甲基)丙烯酸2-羥丙酯、(甲基)丙烯酸2-羥丁酯、(甲基)丙烯酸2-羥基-3-苯氧基丙酯、2-(甲基)丙烯醯氧乙基-2-羥丙基鄰苯二甲酸酯、單(甲基)丙烯酸甘油酯、(甲基)丙 烯酸3-羥丙酯、(甲基)丙烯酸3-羥丁酯、(甲基)丙烯酸4-羥丁酯等含有羥基的(甲基)丙烯酸酯等。 Examples of the hydroxyl group-containing (meth) acrylate include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, and (methyl). 2-hydroxy-3-phenoxypropyl acrylate, 2-(meth)acryloyloxyethyl-2-hydroxypropyl phthalate, glycerol mono(meth)acrylate, (methyl) C A hydroxyl group-containing (meth) acrylate such as 3-hydroxypropyl acrylate, 3-hydroxybutyl (meth) acrylate or 4-hydroxybutyl (meth) acrylate.

作為含有羧基的(甲基)丙烯酸酯，可列舉例如丙烯酸、甲基丙烯酸、巴豆酸、馬來酸、衣康酸、檸康酸等乙烯基型不飽和羧酸之外，還有2-(甲基)丙烯醯氧乙基琥珀酸、2-(甲基)丙烯醯氧乙基鄰苯二甲酸、2-(甲基)丙烯醯氧乙基六氫鄰苯二甲酸等。 Examples of the (meth) acrylate having a carboxyl group include a vinyl type unsaturated carboxylic acid such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, and citraconic acid, and 2-( Methyl) propylene oxime ethyl succinic acid, 2-(methyl) propylene oxiranyl phthalic acid, 2-(meth) propylene oxiranyl hexahydrophthalic acid, and the like.

作為含有胺基的(甲基)丙烯酸酯，可列舉例如(甲基)丙烯酸單甲基胺基乙酯、(甲基)丙烯酸單乙基胺基乙酯、(甲基)丙烯酸單甲基胺基丙酯、(甲基)丙烯酸單乙基胺基丙酯等(甲基)丙烯酸單烷基胺基酯等。 Examples of the amino group-containing (meth) acrylate include monomethylaminoethyl (meth)acrylate, monoethylaminoethyl (meth)acrylate, and monomethylamine (meth)acrylate. A monoalkylamino (meth)acrylate such as propyl acrylate or monoethylaminopropyl (meth)acrylate.

作為含有醯胺基的(甲基)丙烯酸酯，可列舉例如(甲基)丙烯醯胺、N-甲基(甲基)丙烯醯胺、N-羥甲基(甲基)丙烯醯胺等丙烯醯胺類等。 Examples of the (meth) acrylate containing a guanamine group include propylene such as (meth) acrylamide, N-methyl (meth) acrylamide, and N-methylol (meth) acrylamide. Amidoxis and the like.

此外，作為低極性的分子結構的(甲基)丙烯酸酯，可列舉例如(甲基)丙烯酸脂環酯或(甲基)丙烯酸烷基酯。 Further, examples of the (meth) acrylate having a low-polar molecular structure include alicyclic (meth) acrylate or alkyl (meth) acrylate.

作為(甲基)丙烯酸脂環酯，可列舉例如(甲基)丙烯酸環己酯、(甲基)丙烯酸異冰片酯、(甲基)丙烯酸雙環戊烯基氧乙基酯、(甲基)丙烯酸雙環戊二烯基酯、(甲基)丙烯酸三環癸基酯、(甲基)丙烯酸降冰片酯等。 Examples of the (meth) acrylate cyclic ester include cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, and (meth)acrylic acid. Dicyclopentadienyl ester, tricyclodecyl (meth)acrylate, norbornyl (meth)acrylate, and the like.

作為上述(甲基)丙烯酸烷基酯，可列舉例如(甲基)丙烯酸十二烷酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸異癸酯、(甲基)丙烯酸苄酯、(甲基)丙烯酸十八烷酯、(甲基)丙烯酸丁酯、1,6-己二醇二丙烯酸酯。 Examples of the alkyl (meth)acrylate include dodecyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isodecyl (meth)acrylate, and (meth)acrylic acid. Benzyl ester, octadecyl (meth)acrylate, butyl (meth)acrylate, 1,6-hexanediol diacrylate.

作為形成硬塗層3的(甲基)丙烯酸酯的含量，沒有特別限制，較佳為5質量%以上、85質量%以下，進一步較佳為 10質量%、以上80質量%以下，特佳為15質量%以上、75質量%以下。形成硬塗層3的(甲基)丙烯酸酯的含量若超過上述上限，則在成型時發生破裂的可能性增加。此外，形成硬塗層3的(甲基)丙烯酸酯的含量若未達到上述下限，可能使耐磨損性和塗膜硬度降低。另一方面，形成硬塗層3的(甲基)丙烯酸酯的含量若在上述範圍內，可適宜地保持耐磨損性和塗膜硬度，同時保持適度的彈性，抑制破裂的發生。 The content of the (meth) acrylate forming the hard coat layer 3 is not particularly limited, but is preferably 5% by mass or more and 85% by mass or less, and further preferably 10% by mass or more and 80% by mass or less, and particularly preferably 15% by mass or more and 75% by mass or less. When the content of the (meth) acrylate forming the hard coat layer 3 exceeds the above upper limit, the possibility of cracking during molding increases. Further, if the content of the (meth) acrylate forming the hard coat layer 3 does not reach the above lower limit, the abrasion resistance and the coating film hardness may be lowered. On the other hand, when the content of the (meth) acrylate forming the hard coat layer 3 is within the above range, the abrasion resistance and the hardness of the coating film can be suitably maintained while maintaining moderate elasticity to suppress the occurrence of cracking.

作为上述聚合引發劑，可列举例如二苯甲酮、二苯基乙二酮、米氏酮(Michler’s ketone)、2-氯噻吨酮、2,4-二乙基噻吨酮、安息香***、安息香異丙醚、安息香異丁基醚、2,2-二乙氧基苯乙酮、安息香雙甲醚、2,2-二甲氧基-1,2-二苯基乙烷-1-酮、2-羥基-2-甲基-1-苯基丙烷-1-酮、1-羥基環己基苯基甲酮、2-甲基-1-[4-甲硫基苯基]-2-嗎啉基-1-丙酮、1-[4-(2-羥乙氧基)-苯基]-2-羥基-2-甲基-1-丙烷-1-酮、雙(2,4-環戊二烯基)-雙[2,6-二氟-3-(1H-吡咯-1-基)苯基]鈦(IV)、2-苄基-2-二甲胺基-1-(4-嗎啉苯基)-1-丁酮、2,4,6-三甲基苯甲酰基二苯基膦氧化物等。此外，上述化合物可單獨使用，也可多種混合使用。 Examples of the polymerization initiator include benzophenone, diphenylethanedione, Michler's ketone, 2-chlorothioxanthone, 2,4-diethylthioxanthone, and benzoin ethyl ether. Benzoin isopropyl ether, benzoin isobutyl ether, 2,2-diethoxyacetophenone, benzoin dimethyl ether, 2,2-dimethoxy-1,2-diphenylethane-1-one , 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-[4-methylthiophenyl]-2-? Lolinyl-1-propanone, 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propan-1-one, bis(2,4-cyclopentyl) Dienyl)-bis[2,6-difluoro-3-(1H-pyrrol-1-yl)phenyl]titanium(IV), 2-benzyl-2-dimethylamino-1-(4- Morpholine phenyl)-1-butanone, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, and the like. Further, the above compounds may be used singly or in combination of two or more.

作為硬塗層3的鉛筆硬度，沒有特別限制，例如較佳為H以上，進一步較佳為2H以上，特別較佳為3H以上。該硬塗層膜1中，硬塗層3的鉛筆硬度若未達到上述下限，可能使硬度變差。與此相對，該硬塗層膜1中，硬塗層3的鉛筆硬度若在上述範圍內，可保持硬塗層3具有較好的硬度。因此，該硬塗層膜1中，可提高硬塗層3的防損壞性，進一步提高該硬塗層膜1的易使用性。此外，“鉛筆 硬度”為基於JIS K5400規定的試驗方法8.4中記載的鉛筆劃痕值的值。 The pencil hardness of the hard coat layer 3 is not particularly limited, and is preferably, for example, H or more, more preferably 2H or more, and particularly preferably 3H or more. In the hard coat film 1, if the pencil hardness of the hard coat layer 3 does not reach the above lower limit, the hardness may be deteriorated. On the other hand, in the hard coat film 1, if the pencil hardness of the hard coat layer 3 is within the above range, the hard coat layer 3 can be kept to have a good hardness. Therefore, in the hard coat film 1, the damage prevention property of the hard coat layer 3 can be improved, and the ease of use of the hard coat film 1 can be further improved. Also, "pencil The hardness is a value based on the pencil scratch value described in Test Method 8.4 prescribed by JIS K5400.

硬塗層3的厚度(平均厚度)沒有特別限制，可為例如0.5 μm以上、50 μm以下。 The thickness (average thickness) of the hard coat layer 3 is not particularly limited, and may be, for example, 0.5 μm or more and 50 μm or less.

硬塗層3的製造方法沒有特別限制，可通過在基體材料層2的一面塗布活性能量射線固化樹脂，使其乾燥，然後照射活性能量射線進行製造。作為活性能量射線固化樹脂的塗布方法，只要是能在基體材料層2的一面均勻地塗布活性能量射線固化樹脂的方法，就沒有特別限制，可列舉例如旋轉塗布法、噴塗法、斜板式塗布、浸漬塗布法、棒塗布法、輥塗法、絲網印刷法等各種方法。此外，製造硬塗層3時，根據需要，作為預處理，可在氬氣或氮氣等非活性氣體環境下進行等離子體處理等表面改性處理。此外，可在基體材料層2的一面層疊底塗層，通過該底塗層再層疊硬塗層3。 The method for producing the hard coat layer 3 is not particularly limited, and it can be produced by applying an active energy ray-curable resin to one surface of the base material layer 2, drying it, and then irradiating the active energy ray. The method of applying the active energy ray-curable resin is not particularly limited as long as it can uniformly apply the active energy ray-curable resin to one surface of the base material layer 2, and examples thereof include a spin coating method, a spray coating method, and a swash plate coating method. Various methods such as a dip coating method, a bar coating method, a roll coating method, and a screen printing method. Further, when the hard coat layer 3 is produced, as the pretreatment, a surface modification treatment such as plasma treatment may be performed in an inert gas atmosphere such as argon gas or nitrogen gas. Further, an undercoat layer may be laminated on one surface of the base material layer 2, and the hard coat layer 3 may be further laminated through the undercoat layer.

基體材料層2另一表面被層疊。黏接層4可使用丙烯酸系樹脂、聚胺酯系樹脂等公知的黏性樹脂形成。此外，將黏接層4加入公知的黏性樹脂中，也可通過高壓法混合如下物質形成：低密度聚乙烯等熱塑性樹脂；合成橡膠、天然橡膠等彈性體；萜烯樹脂、石油樹脂等黏接助劑等。 The other surface of the base material layer 2 is laminated. The adhesive layer 4 can be formed using a known viscous resin such as an acrylic resin or a polyurethane resin. Further, the adhesive layer 4 is added to a known adhesive resin, and may be formed by mixing a high-pressure method with a thermoplastic resin such as low-density polyethylene, an elastomer such as a synthetic rubber or a natural rubber, or a resin such as a terpene resin or a petroleum resin. Additives, etc.

作為形成黏接層4的黏接性樹脂，可適宜使用具有如下構成單位的丙烯酸系共聚物：含有以烷基的碳原子數為8以上、20以下的丙烯酸烷基酯單體來源的構成單位；從(甲基)丙烯酸環己酯、(甲基)丙烯酸異冰片酯、(甲基)丙烯酸三環癸基酯選出的至少一種的脂環式單體來源的構成單位；以及含有官能團單體來源的構成單位。作為上述丙烯酸烷 基酯單體，從黏接力和抑制從黏接物件起泡的觀點出發，較佳丙烯酸2-乙基己酯、丙烯酸異辛酯、丙烯酸十二烷酯、丙烯酸十八烷酯，特別較佳丙烯酸2-乙基己酯。在黏接力弱的情況下，從黏接對象產生的微量氣體成分成為滯留在介面上的氣泡，有降低黏接性和使外觀變差的可能。作為上述烷基丙烯酸酯單體來源的構成單位的含量，從維持其他的構成單位的含量以及保持規定的黏接力的觀點出發，相對於構成丙烯酸系共聚物的全部構成單位，較佳為29.9質量%以上、55質量%以下，進一步較佳為35質量%以上、50質量%以下。此外，作為上述脂環式單體，從黏接力和抑制從黏接物件起泡的觀點出發，可使用丙烯酸環己酯為宜。作為上述脂環式單體來源的構成單位的含量，相對於構成丙烯酸系共聚物的全部構成單位，較佳為50質量%以上、70質量%以下，進一步較佳為55質量%以上、65質量%以下。脂環式單體來源的構成單位的含量若超過上述上限，可能會因黏性不足造成黏接力降低。另一方面，脂環式單體來源的構成單位的含量若未達到上述下限，可能不能有效地防止從黏接對象起泡。作為上述含有官能團的單體，可列舉(甲基)丙烯酸2-羥乙基酯或各種(甲基)丙烯酸羥丙酯等(甲基)丙烯酸羥烷基酯，或具有羧基的不飽和單體，例如(甲基)丙烯酸、巴豆酸、延胡索酸、衣康酸、馬來酸等。其中，從黏接力和抑制從黏接物件起泡的觀點出發，較佳丙烯酸2-羥乙酯。作為上述含有官能團單體來源的構成單位的含量，較佳為0.1質量%以上、10質量%以下，進一步較佳為0.5質量%以上、5質量%以下。含有官能團單體來源的構成單位的含量若超過上述上限，可能使黏接層4 的極性增大，降低對低極性表面的黏接力。另一方面，含有官能團單體來源的構成單位的含量若未達到上述下限，可能會降低黏接層4的凝聚力，使其對於剪切方向的應力難以維持形狀。 As the adhesive resin forming the adhesive layer 4, an acrylic copolymer having a constituent unit of the following may be suitably used: a constituent unit containing an alkyl acrylate monomer having an alkyl group having 8 or more and 20 or less carbon atoms a constituent unit derived from at least one alicyclic monomer selected from cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, tricyclodecyl (meth) acrylate; and a functional group-containing monomer The constituent unit of the source. As the above acryl The base ester monomer is preferably 2-ethylhexyl acrylate, isooctyl acrylate, dodecyl acrylate or octadecyl acrylate from the viewpoint of adhesion and suppression of foaming from the adhesive member. 2-ethylhexyl acrylate. In the case where the adhesion is weak, the trace gas component generated from the adhering object becomes bubbles trapped on the interface, which may lower the adhesion and deteriorate the appearance. The content of the constituent unit of the above-mentioned alkyl acrylate monomer is preferably 29.9 by mass from the viewpoint of maintaining the content of another constituent unit and maintaining a predetermined adhesive strength with respect to all constituent units constituting the acrylic copolymer. % or more and 55% by mass or less, and more preferably 35% by mass or more and 50% by mass or less. Further, as the alicyclic monomer, cyclohexyl acrylate may be preferably used from the viewpoint of adhesion and suppression of foaming from the adhesive member. The content of the constituent unit of the alicyclic monomer is preferably 50% by mass or more and 70% by mass or less, and more preferably 55% by mass or more and 65% by mass based on the entire constituent unit constituting the acrylic copolymer. %the following. If the content of the constituent unit derived from the alicyclic monomer exceeds the above upper limit, the adhesive strength may be lowered due to insufficient viscosity. On the other hand, if the content of the constituent unit derived from the alicyclic monomer does not reach the above lower limit, foaming from the bonded object may not be effectively prevented. Examples of the functional group-containing monomer include 2-hydroxyethyl (meth)acrylate or various hydroxyalkyl (meth)acrylates such as hydroxypropyl (meth)acrylate, or unsaturated monomers having a carboxyl group. For example, (meth)acrylic acid, crotonic acid, fumaric acid, itaconic acid, maleic acid, and the like. Among them, 2-hydroxyethyl acrylate is preferred from the viewpoint of adhesion and suppression of foaming from the adhesive member. The content of the constituent unit containing the functional group-containing monomer is preferably 0.1% by mass or more and 10% by mass or less, and more preferably 0.5% by mass or more and 5% by mass or less. If the content of the constituent unit containing the source of the functional group monomer exceeds the above upper limit, the adhesive layer 4 may be caused. The polarity is increased to reduce the adhesion to low polarity surfaces. On the other hand, if the content of the constituent unit containing the functional group monomer source does not reach the above lower limit, the cohesive force of the adhesive layer 4 may be lowered, and it is difficult to maintain the shape in the shear direction stress.

作為丙烯酸系共聚物的製造方法，可列舉公知的自由基聚合法等。例如，通過將上述單體溶解在如甲苯或二甲苯這樣的烴類或如乙酸乙酯這樣的酯類的有機溶劑中，添加偶氮二異丁腈、偶氮二異戊腈、過氧化苯甲醯等聚合引發劑，在50-90℃左右下進行3-20小時左右的聚合，可得到丙烯酸系共聚物的有機溶液。 A known radical polymerization method or the like is exemplified as a method for producing the acrylic copolymer. For example, azobisisobutyronitrile, azobisisovaleronitrile, benzoyl peroxide are added by dissolving the above monomer in an organic solvent such as a hydrocarbon such as toluene or xylene or an ester such as ethyl acetate. A polymerization initiator such as formazan is polymerized at about 50 to 90 ° C for about 3 to 20 hours to obtain an organic solution of an acrylic copolymer.

作為丙烯酸系共聚物的重均分子量，例如為20萬以上，較佳為40萬以上、200萬以下，進一步較佳為50萬以上、150萬以下。丙烯酸系共聚物的重均分子量若超過上述上限，可能在聚合物合成時聚合較困難。另一方面，丙烯酸酯共聚物的重均分子量若未達到上述下限，可能增加氣泡的產生。此外，重均分子量是通過凝膠滲透色譜法測定的標準聚苯乙烯換算的值。 The weight average molecular weight of the acrylic copolymer is, for example, 200,000 or more, preferably 400,000 or more, 2,000,000 or less, and more preferably 500,000 or more and 1.5 million or less. When the weight average molecular weight of the acrylic copolymer exceeds the above upper limit, it may be difficult to polymerize during polymer synthesis. On the other hand, if the weight average molecular weight of the acrylate copolymer does not reach the above lower limit, the generation of bubbles may be increased. Further, the weight average molecular weight is a value in terms of standard polystyrene measured by gel permeation chromatography.

作為丙烯酸系共聚物的玻璃化轉變溫度，作為黏合劑，為得到充分的黏接力通常在-10℃以下，較佳為-70℃以上、-20℃以下。 The glass transition temperature of the acrylic copolymer is usually -10 ° C or lower, preferably -70 ° C or higher and -20 ° C or lower, in order to obtain a sufficient adhesive force as a binder.

可通過將黏合劑溶液塗布於基體材料層2的另一面，使其乾燥，由此將黏接層4層疊於基體材料層2。此外，可將黏合劑溶液預先塗布於分離器的單面，使其乾燥之後，通過與基體材料層2貼合而將黏接層4層疊於基體材料層2。 The adhesive layer 4 can be laminated on the base material layer 2 by applying a binder solution to the other surface of the base material layer 2 and drying it. Further, the adhesive solution may be applied to one surface of the separator in advance, dried, and then bonded to the base material layer 2 to laminate the adhesive layer 4 to the base material layer 2.

黏接層4的厚度(平均厚度)沒有特別限制，例如可 為10 μm以上、40 μm以下。 The thickness (average thickness) of the adhesive layer 4 is not particularly limited, and for example, It is 10 μm or more and 40 μm or less.

該硬塗層膜1的面內延遲值(Ro)為100nm以下，進一步較佳為50nm以下，更較佳15nm以下，特別較佳為5nm以下。此外，硬塗層膜1的厚度方向延遲值(Rth)為200nm以下，進一步較佳100nm以下，更較佳30nm以下，特佳為10nm以下。通過如上述減小面內延遲值(Ro)和厚度方向延遲值(Rth)，該硬塗層膜1可抑制透過光束的變換作用，防止阻礙其他光學元件的光學功能。 The in-plane retardation value (Ro) of the hard coat film 1 is 100 nm or less, more preferably 50 nm or less, still more preferably 15 nm or less, and particularly preferably 5 nm or less. Further, the thickness direction retardation value (Rth) of the hard coat film 1 is 200 nm or less, more preferably 100 nm or less, still more preferably 30 nm or less, and particularly preferably 10 nm or less. By reducing the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) as described above, the hard coat film 1 can suppress the transformation of the transmitted light beam and prevent the optical function of the other optical elements from being hindered.

作為該硬塗層膜1的霧度，沒有特別限制，較佳為2%以下，進一步較佳為1%以下，更較佳為0.5%以下。若該硬塗層膜1的霧度超過上述範圍，可能降低影像的可視性，降低顯示影像的清晰度。另一方面，若該硬塗層膜1的霧度在上述範圍內，可抑制影像的可視性的降低，保持顯示影像的清晰度。 The haze of the hard coat film 1 is not particularly limited, but is preferably 2% or less, more preferably 1% or less, and still more preferably 0.5% or less. If the haze of the hard coat film 1 exceeds the above range, the visibility of the image may be lowered, and the sharpness of the displayed image may be lowered. On the other hand, when the haze of the hard coat film 1 is within the above range, the visibility of the image can be suppressed from being lowered, and the sharpness of the displayed image can be maintained.

作為該硬塗層膜1的可見光透射率，沒有特別限制，較佳為87%以上，進一步較佳為90%以上。該硬塗層膜1的可見光透射率若未達到上述範圍，可能不能充分地使可見光透過，會使可視性降低。另一方面，該硬塗層膜1的可見光透射率若在上述範圍內，可使可見光充分透過，提高可視性。 The visible light transmittance of the hard coat film 1 is not particularly limited, but is preferably 87% or more, and more preferably 90% or more. If the visible light transmittance of the hard coat film 1 does not reach the above range, visible light may not be sufficiently transmitted, and visibility may be lowered. On the other hand, when the visible light transmittance of the hard coat film 1 is within the above range, visible light can be sufficiently transmitted, and visibility can be improved.

通過將黏接層4貼合在觸控面板的玻璃基板的表面和/或背面而將硬塗層膜1層疊於該玻璃基板的背面，可提高在觸控面板破損時有效地防止碎片等飛濺的功能。 By laminating the adhesive layer 4 on the surface and/or the back surface of the glass substrate of the touch panel, the hard coat film 1 is laminated on the back surface of the glass substrate, thereby improving the prevention of splashing and the like when the touch panel is broken. The function.

由於硬塗層膜1具備基體材料層2、硬塗層3和黏接層4，通過黏接層4例如將該硬塗層膜1貼附於觸控面板的玻璃基板等，即使在該玻璃基板等破損的情況下，也能有效 地防止上述碎片飛濺。此外，由於該硬塗層膜1在基體材料層2的一面層疊有硬塗層3，所以在觸控面板等在製造時或搬運時等，可提高防止損壞的功能，同時還可提高易使用性。由於面內延遲值(Ro)和厚度方向延遲值(Rth)在規定的範圍內，因此該硬塗層膜1可防止其阻礙其他光學元件的光學功能。該硬塗層膜1也可用於三維顯示裝置。該硬塗層膜1用於立體顯示裝置的情況下，可抑制戴偏光太陽鏡觀看時的彩虹圖案。 Since the hard coat film 1 is provided with the base material layer 2, the hard coat layer 3, and the adhesive layer 4, the hard coat film 1 is attached to the glass substrate of the touch panel or the like by the adhesive layer 4, for example, even in the glass. It can also be effective when the substrate is damaged. Prevent the above debris from splashing. Further, since the hard coat film 1 has the hard coat layer 3 laminated on one surface of the base material layer 2, the function of preventing damage can be improved at the time of manufacture or transportation of the touch panel or the like, and the ease of use can be improved. Sex. Since the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) are within a prescribed range, the hard coat film 1 can be prevented from obstructing the optical function of other optical elements. The hard coat film 1 can also be used for a three-dimensional display device. When the hard coat film 1 is used for a stereoscopic display device, it is possible to suppress a rainbow pattern when the polarized sunglasses are viewed.

圖2的觸控面板11具有玻璃基板12、14，電極層13和硬塗層膜1。玻璃基板12在表面側的大致中部區域進行指尖輸入時會形成輸入區域。玻璃基板12的背面層疊有通過黏接層4貼附的硬塗層膜1。電極層13為透明的導電膜，相互交叉的方向上有第一電極和第二電極延伸。電極層13層疊在玻璃基板14的表面。玻璃基板14的背面層疊有通過黏接層4貼附的硬塗層膜1。觸控面板11在玻璃基板12的輸入區域在手指等接觸前後會引起電容的變化。觸控面板11是檢測上述第一電極和第二電極的電容變化進而確定觸控位置的結構。 The touch panel 11 of FIG. 2 has glass substrates 12, 14, an electrode layer 13, and a hard coat film 1. When the glass substrate 12 is input with a fingertip in a substantially central portion on the surface side, an input region is formed. The hard coat film 1 attached by the adhesive layer 4 is laminated on the back surface of the glass substrate 12. The electrode layer 13 is a transparent conductive film, and the first electrode and the second electrode extend in a direction crossing each other. The electrode layer 13 is laminated on the surface of the glass substrate 14. The hard coat film 1 attached by the adhesive layer 4 is laminated on the back surface of the glass substrate 14. The touch panel 11 causes a change in capacitance before and after the finger or the like is touched in the input region of the glass substrate 12. The touch panel 11 is configured to detect a change in capacitance of the first electrode and the second electrode to determine a touch position.

由於硬塗層膜1具備基體材料層2、硬塗層3和黏接層4，通過黏接層4將上述觸控面板11貼附於玻璃基板12、14的背面，即使在玻璃基板12、14等破損的情況下，也可以有效地防止上述碎片飛濺。此外，由於硬塗層膜1的基體材料層2的一面層疊有硬塗層3，可使防止觸控面板11在製造時或搬運時等損壞的功能提高，同時還可提高易使用性。由於硬塗層膜1的面內延遲值(Ro)和厚度方向延遲值(Rth)在規定的範圍內，上述觸控面板11可防止阻 礙其他光學元件的光學功能。 Since the hard coat film 1 is provided with the base material layer 2, the hard coat layer 3, and the adhesive layer 4, the touch panel 11 is attached to the back surface of the glass substrates 12 and 14 through the adhesive layer 4, even on the glass substrate 12, In the case of damage such as 14 or the like, it is also possible to effectively prevent the above-mentioned debris from splashing. Further, since the hard coat layer 3 is laminated on one surface of the base material layer 2 of the hard coat film 1, the function of preventing damage of the touch panel 11 at the time of manufacture or transportation can be improved, and the ease of use can be improved. Since the in-plane retardation value (Ro) and the thickness direction retardation value (Rth) of the hard coat film 1 are within a prescribed range, the above touch panel 11 can prevent the resistance Impede the optical function of other optical components.

此外，本發明的硬塗層膜和觸控面板除上述形態之外，進行各種改變、改進的形態也能夠實施。例如，該硬塗層膜也可由硬塗層為2層以上的層數形成。此外，該硬塗層膜在硬塗層的上面還可以層疊有其他層(例如，UV吸收層、抗靜電層、抗反射層等)。該硬塗層膜中，基體材料層和硬塗層、或基體材料層和黏接層可通過其他的塗層進行層疊。通過在觸控面板的玻璃基板的背面之外貼附各種光學元件，該硬塗層膜可使防止上述元件飛濺的功能提高。該硬塗層膜可貼附於觸控面板的玻璃基板的表面、或貼附於觸控面板的玻璃基板的表面和背面。特別是，該硬塗層膜通過貼附於玻璃基板的背面(所述玻璃基板貼附於觸控面板的電極層的背面)，可有效提高防止觸控面板在製造或搬運時等損壞的功能，可適宜地提高觸控面板的易使用性。該硬塗層膜可用於電容式、電阻式、電磁感應式等各種觸控面板。除觸控面板之外，該硬塗層膜還可用於立體影像顯示裝置等各種液晶顯示模組。 Further, the hard coat film and the touch panel of the present invention can be implemented in various modifications and improvements in addition to the above-described embodiments. For example, the hard coat film may be formed of a hard coat layer of two or more layers. Further, the hard coat film may be laminated with other layers (for example, a UV absorbing layer, an antistatic layer, an antireflection layer, etc.) on the hard coat layer. In the hard coat film, the base material layer and the hard coat layer, or the base material layer and the adhesive layer may be laminated by other coating layers. By attaching various optical elements to the back surface of the glass substrate of the touch panel, the hard coat film can improve the function of preventing splashing of the above elements. The hard coat film may be attached to the surface of the glass substrate of the touch panel or to the front and back surfaces of the glass substrate of the touch panel. In particular, the hard coat film is attached to the back surface of the glass substrate (the glass substrate is attached to the back surface of the electrode layer of the touch panel), thereby effectively improving the function of preventing damage of the touch panel during manufacture or transportation. The ease of use of the touch panel can be suitably improved. The hard coat film can be used for various touch panels such as a capacitive type, a resistive type, and an electromagnetic induction type. In addition to the touch panel, the hard coat film can also be used for various liquid crystal display modules such as a stereoscopic image display device.

如上所述，本發明的硬塗層膜可適用於即使在玻璃基板等破損的情況下也可有效防止其碎片等飛濺的觸控面板。 As described above, the hard coat film of the present invention can be applied to a touch panel which can effectively prevent splashing of chips or the like even when the glass substrate or the like is broken.

1‧‧‧硬塗層膜 1‧‧‧hard coating film

2‧‧‧基體材料層 2‧‧‧ base material layer

3‧‧‧硬塗層 3‧‧‧hard coating

4‧‧‧黏接層 4‧‧‧Adhesive layer

11‧‧‧觸控面板 11‧‧‧Touch panel

12‧‧‧玻璃基板 12‧‧‧ glass substrate

13‧‧‧電極層 13‧‧‧Electrode layer

14‧‧‧玻璃基板 14‧‧‧ glass substrate

圖1表示本發明的一種實施方式中涉及的硬塗層膜的示意性橫截面圖。 Fig. 1 shows a schematic cross-sectional view of a hard coat film according to an embodiment of the present invention.

圖2表示本發明的一種實施方式中涉及的觸控面板的示意性橫截面圖。 FIG. 2 is a schematic cross-sectional view showing a touch panel according to an embodiment of the present invention.

1‧‧‧硬塗層膜 1‧‧‧hard coating film

2‧‧‧基體材料層 2‧‧‧ base material layer

3‧‧‧硬塗層 3‧‧‧hard coating

4‧‧‧黏接層 4‧‧‧Adhesive layer

Claims (9)

一種硬塗層膜，其特徵在於，所述硬塗層膜具有透明的基體材料層、層疊在所述基體材料層的一面的硬塗層、以及層疊在所述基體材料層的另一面的黏接層，面內延遲值(Ro)為100 nm以下，並且厚度方向延遲值(Rth)為200 nm以下。 A hard coat film, characterized in that the hard coat film has a transparent base material layer, a hard coat layer laminated on one side of the base material layer, and a paste laminated on the other side of the base material layer In the layer, the in-plane retardation value (Ro) is 100 nm or less, and the thickness direction retardation value (Rth) is 200 nm or less. 如申請專利範圍第1項所述之硬塗層膜，其中上述基體材料層以聚碳酸酯系樹脂為主要成分。 The hard coat film according to claim 1, wherein the base material layer contains a polycarbonate resin as a main component. 如申請專利範圍第1項所述之硬塗層膜，其中上述基體材料層以環烯烴共聚物為主要成分。 The hard coat film according to claim 1, wherein the base material layer has a cycloolefin copolymer as a main component. 如申請專利範圍第1項所述之硬塗層膜，其中上述基體材料層以丙烯酸系樹脂為主要成分。 The hard coat film according to claim 1, wherein the base material layer contains an acrylic resin as a main component. 如申請專利範圍第1項所述的硬塗層膜，其中上述基體材料層的平均厚度為10 μm以上、500 μm以下。 The hard coat film according to claim 1, wherein the base material layer has an average thickness of 10 μm or more and 500 μm or less. 如申請專利範圍第1項所述的硬塗層膜，其中霧度為2%以下。 The hard coat film according to claim 1, wherein the haze is 2% or less. 如申請專利範圍第1項所述的硬塗層膜，其中可見光透射率為87%以上。 The hard coat film according to claim 1, wherein the visible light transmittance is 87% or more. 如申請專利範圍第1項所述的硬塗層膜，其中所述硬塗層膜通過上述黏接層貼附在觸控面板的玻璃基板的表面和/或背面。 The hard coat film according to claim 1, wherein the hard coat film is attached to a surface and/or a back surface of the glass substrate of the touch panel through the adhesive layer. 一種觸控面板，其特徵在於，所述觸控面板具備：玻璃基板；以及如申請專利範圍第1-7項中任意一項所述之硬塗層膜，所述硬塗層膜通過黏接層貼附於所述玻璃基板的表面和/或背面。 A touch panel, comprising: a glass substrate; and the hard coat film according to any one of claims 1 to 7, wherein the hard coat film is bonded The layer is attached to the surface and/or the back surface of the glass substrate.
TW101125063A 2011-07-12 2012-07-12 Hard-coating film and touch panel TW201307072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011153791A JP2013020120A (en) 2011-07-12 2011-07-12 Hard coat film and touch panel

Publications (1)

Publication Number Publication Date
TW201307072A true TW201307072A (en) 2013-02-16

Family

ID=47637795

Family Applications (1)

Application Number Title Priority Date Filing Date
TW101125063A TW201307072A (en) 2011-07-12 2012-07-12 Hard-coating film and touch panel

Country Status (4)

Country Link
JP (1) JP2013020120A (en)
KR (1) KR20130008470A (en)
CN (1) CN102922805A (en)
TW (1) TW201307072A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI635155B (en) * 2013-12-26 2018-09-11 日商日本瑞翁股份有限公司 Multilayer film and manufacturing method thereof

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141866A1 (en) * 2013-03-13 2014-09-18 Dic株式会社 Hard coat film, protective film, and image display device
JP2015225428A (en) * 2014-05-27 2015-12-14 凸版印刷株式会社 Touch panel and touch type information input image display device using the same
JP6512804B2 (en) * 2014-12-05 2019-05-15 日東電工株式会社 Transparent conductive film laminate and use thereof
CN105867668B (en) * 2015-01-23 2020-08-04 深圳莱宝高科技股份有限公司 Thin film processing method and touch panel manufacturing method
KR101966634B1 (en) * 2015-11-02 2019-04-08 동우 화인켐 주식회사 Film Touch Sensor
CN109799563A (en) * 2017-11-16 2019-05-24 上海和辉光电有限公司 A kind of polarizer, circular polarizer and OLED display
US11970593B2 (en) * 2018-07-27 2024-04-30 Nippon Paper Industries Co., Ltd. Hard coat film and method for producing same
EP4011622A4 (en) * 2019-08-09 2022-08-24 Mitsubishi Gas Chemical Company, Inc. Resin sheet for molding and molded article using same
US20220371310A1 (en) * 2019-10-18 2022-11-24 Showa Denko K.K. Transparent conducting film laminate and processing method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038744B2 (en) * 2002-01-09 2006-05-02 Konica Corporation Polarizing plate having a stretched film on a side thereof and liquid crystal display employing the same
CN1306292C (en) * 2002-01-17 2007-03-21 富士胶片株式会社 Polarizing plate comprising linearly polarizing film and phase retarder
JP2004004150A (en) * 2002-05-13 2004-01-08 Sumitomo Chem Co Ltd Laminated phase differential film and liquid crystal display device using the same
JP5313728B2 (en) * 2009-03-12 2013-10-09 リンテック株式会社 Optical film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI635155B (en) * 2013-12-26 2018-09-11 日商日本瑞翁股份有限公司 Multilayer film and manufacturing method thereof

Also Published As

Publication number Publication date
KR20130008470A (en) 2013-01-22
CN102922805A (en) 2013-02-13
JP2013020120A (en) 2013-01-31

Similar Documents

Publication Publication Date Title
TW201307072A (en) Hard-coating film and touch panel
TWI498221B (en) A hard coat film, a transparent conductive laminate, and a touch panel
TWI494223B (en) A hard coat film, a transparent conductive laminate, and a touch panel
KR101406805B1 (en) Hard coat film, transparent conductive laminate and touch panel
TWI474036B (en) Optical sheet and touch panel
KR101495138B1 (en) Optical sheet, transparent conductive laminate and touch panel
JP6797567B2 (en) Light diffusing film and its manufacturing method and display device
JP2010085978A (en) Liquid crystal display protection plate
US20180016405A1 (en) Hard coat film
US9469528B2 (en) Adhesive composition, adhesive film including the same, method of preparing adhesive film, and display member using the same
KR101735689B1 (en) Circulary polarizing plate, and touch panel and display device comprising the same
JPWO2017164276A1 (en) Extruded resin plate manufacturing method and extruded resin plate
JP2018078090A (en) Transparent conductive film and touch panel using the same
CN106003940B (en) Optical film with adhesive layer
TW201423172A (en) Laminate, method for producing same, retardation film, polarizing plate, and ips liquid crystal panel
WO2011108494A1 (en) Conductive laminate film and touch panel using the same
JP2019203931A (en) Anti-glare film, and manufacturing method and application of the same
TWI643740B (en) Optical laminate and manufacturing method of optical laminate
TWI459058B (en) Optical film, optical sheet and liquid crystal display module
JP2019105694A (en) Antiglare film, and method for producing the same and application
CN110023083B (en) Method for producing coated film
KR20190060569A (en) Polarizing plate and optical display device comprising the same
JP2015108832A (en) Liquid crystal display protection plate
JP2022104946A (en) Antiglare film, and manufacturing method for and use of the same