M296993 ⑴ 八、新型說明 【新型所屬之技術領域】 本創作係關於一種聚光片，尤指一種可應用於液晶顯 示器中之抗刮聚光片。 【先前技術】 聚光片業界習稱爲增亮膜（Brightness Enhancement • Film)或稜鏡片（prism film)，係在厚度僅25-250// m的聚 酯光學薄膜上利用高能UV光將特殊壓克力樹脂硬化成微 細稜鏡結構。而增亮膜主要的功能在藉由折射與內部全反 射將自導光板（lightguide)或擴散板發出至四面八方之散 亂的光線收集，並集中至約土35度的正視角（On-axis)方向 ，以提高LCD的亮度。 如圖1所示之聚光片10，其基材11的上表面具有聚光 結構1 2，但其下表面並無進行耐刮處理，因此在搬放運送 | 過程中，容易由於操作不慎而刮傷或磨損表面，進而影響 聚光片的光學效果。如圖2所示，目前業界一般解決方法 都是在基材1 1下表面另貼上一層保護膜1 3來防止刮傷，惟 此方法具有增加成本和多加製程的缺點。 【新型內容】 有鑑於此，本創作改良上述缺點，將基材下表面塗佈 含紫外線硬化樹脂的硬罩液，照射能量射線加以固化成硬 罩（hard coat)層，因而增強聚光片下表面硬度，可防止其 -4 - M296993 (2) 操作時被刮傷，且透明度高，因此光學效果不受影響。故 本案利用硬罩（hard coat)層來進行聚光片下表面處理，其 聚光片可不用貼覆保護膜即可達到保護的作用，省卻黏、 撕保護膜的製程，不僅使背光模組組裝時的便利性大爲提 高，亦可減少成本。 本創作之主要目的在於提供一種兼具聚光及抗刮特性 之抗刮聚光片，其包含（a)透明基材；（b)聚光層，位在基 Φ 材之上表面；（〇抗刮層，位在基材之下表面，其特徵爲 :該抗刮層係由至少一硬罩（hard coat)層所構成。 【實施方式】 圖3爲本創作之實施例聚光片1〇〇之立體圖。如圖3 所示，聚光片100包含基材101、形成於基材101之一側之 聚光層102、形成於基材101之另一側之抗刮層103。其中 基材101可爲任何本創作所屬技術領域具有通常知識者所 已知者，例如玻璃或塑膠。上述塑膠基材並無特殊限制， 其例如但不限於聚酯樹脂（polyester resin)，如聚對苯二 甲酸乙二酯（PET);聚丙烯酸酯樹脂（polyacrylate resin)， 如聚甲基丙烯酸甲酯（PMM A);聚烯烴樹脂（polyolefin resin)，如聚乙烯（PE)或聚丙烯（PP);聚醯亞胺樹脂 (polyimide resin);聚環嫌烴樹脂（polycycloolefin resin) ;聚碳酸酯樹脂（polycarbonate resin);聚胺基甲酸酯樹 脂（polyurethane resin);三醋酸纖維素（TAC);或彼等之 混合物。較佳爲聚對苯二甲酸乙二酯、聚甲基丙烯酸甲酯 -5- M296993 (3) 、聚環烯烴樹脂、三聚醋酸纖維素或其混合物。基材之厚 度通常取決於所欲得光學產品的需求，其較佳介於約16 μπι(微米）至約250 μχη之間。 爲了達到抗刮之功效’本創作之抗刮層i 〇3的形成爲 在基材1 0 1之下表面塗佈含紫外線硬化樹脂的硬罩液，形 成至少一平滑硬罩（hard coat)層104，作爲抗刮層103。上 述紫外線硬化樹脂包含至少一種丙烯酸酯類單體，具有一 • 、二或多個官能基，適當之聚合單體例子例如包括（甲基） 丙烯酸酯（（meth)acrylate)、丙烯酸異冰片酯（isobornyl acrylate)、丙烯酸胺基甲酸酯（urethane acrylate)、丙烯酸 (acrylic acid)、酚醛清漆環氧丙烯酸酯（nov〇iac epoxy acrylate)、聚酯丙烯酸酯（polyester acrylate)或彼等之混 合物。較佳爲（甲基）丙烯酸酯。如有必要，爲增加硬罩液 黏度，也可添加一些寡聚體作爲交聯劑，例如環氧丙烯酸 酯、聚氨酯丙烯酸酯、聚酯丙烯酸酯、純丙烯酸酯等。 • 爲防靜電效應，上述硬罩液必須添加抗靜電劑 (antistatic agent)，此抗靜電劑並無特殊限制，例如四級 胺化合物、聚乙醇酯、聚乙二醇醚、聚環氧乙烷 (Ployethylene oxide)、砂氧院等。 ' 本創作聚光片100所使用之硬罩液除包含紫外線硬化 樹脂外，尙可視需要包含熱固性樹脂（thermal setting resin)、熱塑性樹脂（thermal plastic resin)或其混合物。 同時亦可視需要添加任何熟悉此項技術者所熟知之添加物 ’例如圖5中所示之無機微粒105、起始劑、交聯劑、流 M296993 (4) 平劑（leveling agent)，消泡劑（defoamer)等。該等無機微 粒1 0 5係不同粒徑，其粒徑大小介於1至5 〇 〇奈米之間，上 述無機微粒1 05種類並無特殊限制，其例如但不侷限於二 氧化鈦（Ti02)、二氧化矽（Si〇2)、氧化鋅（Zn0)、氧化鋁 (Al2〇3)、二氧化鉻（Zr02)或彼等之混合物。 本創作聚光片1 00，所使用之抗刮層1 03的厚度一般介 於1 μπι至50 μηι之間，較佳爲1卜^至^) ，其光線穿透 鲁 度爲80%以上，最局可達95%，具低體積收縮性，所以不 會產生翹曲，並有良好抗靜電性，其表面電阻率介於108 至1012n/square，且具有根據JIS Κ5400標準方法測得3Η 或以上之鉛筆硬度。 本創作聚光片100之抗刮層103可根據熟悉此項技藝之 人士所熟知之任何方式製造，例如，可經由包含以下步驟 之方法製造： (I)將紫外線硬化樹脂，視需要地與習知添加物混合 •，形成一硬罩液； (Π)將該硬罩液塗佈於基材的下表面，以形成一塗層 y (瓜）對該塗層照射能量射線，形成硬罩（hard coat)層 〇 上述步驟（ΙΠ )之塗層固化步驟係藉由照射能量射線產 生光聚合反應而進行，該能量射線係指一定範圍波長之光 源，例如爲紫外光，照射強度可爲自1至3 0 0毫焦耳/平方 公分（mJ/cm2)，較佳係自10至100毫焦耳/平方公分 M296993 (5) (m J/cm2) 〇 若需要，可重複進行上述各步驟，以獲得複數層之硬 罩（hard coat)層 。 爲達到光線聚光效果，本創作在基材1 〇 1之上表面包 含至少一微結構形式層，作爲聚光層102，其厚度一般介 於5 μπι至100 μπι之間，較佳爲10 μιη至40 μηι，具有至少 1.55之折射率，該聚光層102係藉由於基材101上表面塗佈 • 包含樹脂、光起始劑和交聯劑之組合物而形成。適用之樹 月旨，係熟悉此技術領域者所熟知，其例如但不限於聚酯樹 月旨、聚丙烯酸酯樹脂或聚碳酸酯樹脂等。適用於本創作之 光起始劑並無特殊限制，係經光照射後會產生自由基，而 透過自由基之傳遞引發聚合反應者，其例如爲二苯甲酮。 適用之交聯劑，例如爲具有一或多個官能基之（甲基）丙烯 酸酯類，較佳係爲具多官能基者，以提高玻璃轉化溫度。 本創作之聚光層102具微結構形式，該微結構形式包 # 括規則或不規則稜鏡形狀102、圓錐形狀202、立體角形狀 302、珠狀402、或透鏡形狀502。較佳地，該聚光層上具 有規則的稜鏡形狀，此類型聚光層具有較佳之集光效果， * 故可使顯示器具備高輝度。 本創作基材1 0 1下表面塗佈硬罩液，可有效地提高基 材101下表面之硬度，防止表面刮傷現象，且不會翹曲， 因此可避免光學性質受到影響。另外，本創作聚光片1 00 具有聚光結構1 02，可用於液晶顯示器中作爲背光源之聚 光片，以增強液晶顯示器面板之亮度。 -8 - M296993 (6) 圖4爲本創作之實施例之側視圖，聚光片100之基材 101之上表面爲聚光層102，基材101之下表面爲包含有硬 罩層104的抗刮層103。 圖5爲本創作之另一實施例之立體圖，其中抗刮層 103結構中形成硬罩層104之硬罩液中包含無機微粒105。 圖6爲本創作之實施例之立體示意圖，其中聚光層 202之微結構爲圓錐形狀。 # 圖7爲本創作之實施例之立體示意圖，其中聚光層 3〇2之微結構爲立體角形狀。 圖8爲本創作之實施例之立體示意圖，其中聚光層 4 0 2之微結構爲珠狀。 圖9爲本創作之實施例之立體示意圖，其中聚光層 502之微結構爲透鏡形狀。 以上對於本創作所作之說明，係非用以限制本創作之 範圍。任何熟悉此項技藝之人士可輕易達成之修飾及改變 # 均包括於本案說明書揭示內容及所附申請專利範圍之範圍 內0 【圖式簡單說明】 圖1爲習知之聚光片立體圖。 圖2爲習知之貼有保護膜之聚光片之側視圖。 圖3爲本創作之實施例之立體圖，其中聚光層之微結 構爲稜鏡形狀。 圖4爲本創作之實施例之側視圖。 -9- M296993 (7) - 圖5爲本創作之另一實施例之立體圖，其中抗刮層含 無機微粒。 圖6爲本創作之實施例之立體示意圖，其中聚光層之 微結構爲圓錐形狀。 圖7爲本創作之實施例之立體示意圖，其中聚光層之 微結構爲立體角形狀。 圖8爲本創作之實施例之立體示意圖，其中聚光層之 _ 微結構爲珠狀。 圖9爲本創作之實施例之立體示意圖，其中聚光層之 微結構爲透鏡形狀。 【主要元件符號說明】 10，100 :聚光片 11，101 :基材 1 2 :聚光結構 • 13 :保護膜 102， 202， 303， 402， 502 ：聚光層 1 0 3 :抗刮層 • 104 :硬罩層 105 :無機微粒 -10-M296993 (1) VIII. New description [New technical field] This creation is about a concentrating sheet, especially a scratch-resistant concentrating sheet that can be applied to a liquid crystal display. [Prior Art] The concentrating sheet industry is known as Brightness Enhancement Film or Prism Film, which uses special high-energy UV light on a polyester optical film with a thickness of only 25-250//m. The acrylic resin is hardened into a fine crucible structure. The main function of the brightness enhancement film is to collect the light from the lightguide or the diffusion plate to the scattered light in all directions by refraction and internal total reflection, and concentrate on the positive angle (On-axis) of about 35 degrees. Direction to increase the brightness of the LCD. As shown in Fig. 1, the concentrating sheet 10 has a concentrating structure 12 on the upper surface of the substrate 11, but the lower surface thereof is not scratch-resistant, so that it is easy to operate inadvertently during handling The surface is scratched or worn, which in turn affects the optical effect of the concentrating sheet. As shown in Fig. 2, the current general solution in the industry is to apply a protective film 13 on the lower surface of the substrate 1 to prevent scratching. However, this method has the disadvantages of increasing cost and increasing processing. [New content] In view of the above, the present invention improves the above disadvantages by applying a hard cover liquid containing an ultraviolet curable resin to the lower surface of the substrate, and irradiating the energy ray to cure it into a hard coat layer, thereby enhancing the concentrating sheet. The surface hardness prevents the 4 - M296993 (2) from being scratched during operation and the transparency is high, so the optical effect is not affected. Therefore, in this case, a hard coat layer is used for the lower surface treatment of the concentrating sheet, and the concentrating sheet can be protected without a protective film, thereby eliminating the process of sticking and tearing the protective film, and not only the backlight module. The convenience in assembly is greatly improved, and the cost can also be reduced. The main purpose of the present invention is to provide a scratch-resistant concentrating sheet having both condensing and scratch-resistant properties, comprising (a) a transparent substrate; and (b) a concentrating layer on the upper surface of the base Φ material; The scratch-resistant layer is located on the lower surface of the substrate, and is characterized in that the scratch-resistant layer is composed of at least one hard coat layer. [Embodiment] FIG. 3 is a concentrating sheet 1 of an embodiment of the present invention. As shown in FIG. 3, the condensing sheet 100 includes a substrate 101, a concentrating layer 102 formed on one side of the substrate 101, and a scratch-resistant layer 103 formed on the other side of the substrate 101. The substrate 101 can be any one known to those skilled in the art, such as glass or plastic. The plastic substrate is not particularly limited, and is, for example, but not limited to, a polyester resin such as a poly pair. Ethylene phthalate (PET); polyacrylate resin, such as polymethyl methacrylate (PMM A); polyolefin resin, such as polyethylene (PE) or polypropylene (PP) ); polyimide resin; polycycloolefin resin; a polycarbonate resin; a polyurethane resin; a cellulose triacetate (TAC); or a mixture thereof, preferably polyethylene terephthalate or polymethacrylic acid. Methyl ester-5-M296993 (3), polycycloolefin resin, cellulose triacetate or mixtures thereof. The thickness of the substrate generally depends on the desired optical product, preferably between about 16 μm (micrometers) to Between approximately 250 μχη. In order to achieve scratch-resistant effect, the scratch-resistant layer i 〇3 of the present invention is formed by applying a hard cover liquid containing an ultraviolet curing resin to the surface of the substrate 110 to form at least one smooth hard a hard coat layer 104 as a scratch-resistant layer 103. The ultraviolet curable resin includes at least one acrylate monomer having one, two or more functional groups, and examples of suitable polymerizable monomers include, for example, (meth) Acrylate (meth)acrylate, isobornyl acrylate, urethane acrylate, acrylic acid, nov〇iac epoxy acrylate Polyester acrylate or a mixture thereof. Preferably, it is a (meth) acrylate. If necessary, in order to increase the viscosity of the hard cover liquid, some oligomers may also be added as a crosslinking agent, such as epoxy. Acrylate, urethane acrylate, polyester acrylate, pure acrylate, and the like. • For the antistatic effect, the above hard cover liquid must be added with an antistatic agent. The antistatic agent is not particularly limited, such as a quaternary amine compound, a polyethanol ester, a polyethylene glycol ether, or a polyethylene oxide. (Ployethylene oxide), sand oxygen hospital, etc. The hard cover liquid used in the present concentrating sheet 100 may contain, in addition to the ultraviolet curable resin, a thermal setting resin, a thermal plastic resin or a mixture thereof. At the same time, any additives familiar to those skilled in the art can be added as needed, such as the inorganic fine particles 105, the initiator, the crosslinking agent, the flow M296993 (4) leveling agent shown in Fig. 5, and defoaming. Agent (defoamer) and the like. The inorganic fine particles 1 5 are different particle diameters, and the particle size thereof is between 1 and 5 nanometers. The type of the inorganic fine particles is not particularly limited. For example, but not limited to, titanium dioxide (Ti02), Ceria (Si〇2), zinc oxide (Zn0), alumina (Al2〇3), chromium dioxide (ZrO 2 ) or a mixture thereof. The thickness of the scratch-resistant layer 103 used in the present concentrating sheet 100 is generally between 1 μπι and 50 μηι, preferably 1 bu to ^), and the light penetration roughness is 80% or more. Up to 95%, with low volume shrinkage, so does not produce warpage, and has good antistatic properties, its surface resistivity is between 108 and 1012n/square, and has 3Η measured according to JIS Κ5400 standard method or The pencil hardness above. The scratch-resistant layer 103 of the present concentrating sheet 100 can be made in any manner well known to those skilled in the art, for example, by a method comprising the steps of: (I) UV-curing resin, optionally Knowing that the additive is mixed to form a hard cover liquid; (Π) applying the hard cover liquid to the lower surface of the substrate to form a coating y (melon) to irradiate the coating with energy rays to form a hard cover ( Hard coat) The coating curing step of the above step (ΙΠ) is carried out by photopolymerization by irradiation of an energy ray, which refers to a light source of a certain range of wavelengths, for example, ultraviolet light, and the irradiation intensity can be from 1 Up to 300 mJ/cm 2 (mJ/cm 2 ), preferably from 10 to 100 mJ/cm 2 M296993 (5) (m J/cm 2 ) 〇 If necessary, repeat the above steps to obtain A hard coat layer of a plurality of layers. In order to achieve the light concentrating effect, the present invention comprises at least one microstructure layer on the surface of the substrate 1 ,1 as the concentrating layer 102, and the thickness thereof is generally between 5 μπι and 100 μπι, preferably 10 μιη. To 40 μm, having a refractive index of at least 1.55, the concentrating layer 102 is formed by coating a surface of the substrate 101 with a composition comprising a resin, a photoinitiator, and a crosslinking agent. Suitable trees are well known to those skilled in the art and are, for example, but not limited to, polyester trees, polyacrylate resins or polycarbonate resins. The photoinitiator which is suitable for the present invention is not particularly limited, and is a radical which generates a radical after irradiation with light, and which initiates a polymerization reaction by the transfer of a radical, such as benzophenone. Suitable crosslinking agents are, for example, (meth) acrylates having one or more functional groups, preferably those having a polyfunctional group, to increase the glass transition temperature. The concentrating layer 102 of the present invention has a microstructured form that includes a regular or irregular 稜鏡 shape 102, a conical shape 202, a solid angle shape 302, a bead 402, or a lens shape 502. Preferably, the concentrating layer has a regular 稜鏡 shape, and the concentrating layer of this type has a better concentrating effect, so that the display can have high brightness. The surface of the substrate 110 is coated with a hard cover liquid, which can effectively improve the hardness of the lower surface of the substrate 101, prevent surface scratching, and prevent warpage, thereby avoiding the influence of optical properties. In addition, the present concentrating sheet 100 has a concentrating structure 102, which can be used as a concentrating sheet for a liquid crystal display to enhance the brightness of the liquid crystal display panel. -8 - M296993 (6) FIG. 4 is a side view of the embodiment of the present invention. The upper surface of the substrate 101 of the concentrating sheet 100 is a concentrating layer 102, and the lower surface of the substrate 101 is covered with a hard mask layer 104. Scratch resistant layer 103. Figure 5 is a perspective view of another embodiment of the present invention in which the hard cover liquid forming the hard mask layer 104 in the structure of the scratch-resistant layer 103 contains inorganic fine particles 105. Figure 6 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer 202 is conical. # Figure 7 is a perspective view of an embodiment of the present invention, in which the microstructure of the concentrating layer 3〇2 is a solid angle shape. Figure 8 is a perspective view of an embodiment of the present invention, in which the microstructure of the concentrating layer 420 is beaded. Figure 9 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer 502 is in the shape of a lens. The above description of this creation is not intended to limit the scope of this creation. Any modifications and alterations that can be easily made by those skilled in the art are included in the scope of the disclosure of the present specification and the scope of the appended claims. [FIG. 1 is a perspective view of a conventional concentrating sheet. 2 is a side view of a conventional concentrating sheet with a protective film attached thereto. Fig. 3 is a perspective view of an embodiment of the present invention, in which the micro-structure of the concentrating layer has a meandering shape. Figure 4 is a side elevational view of an embodiment of the present invention. -9- M296993 (7) - Fig. 5 is a perspective view of another embodiment of the present invention, wherein the scratch-resistant layer contains inorganic fine particles. Figure 6 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer is conical. Figure 7 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer is a solid angle shape. Figure 8 is a perspective view of an embodiment of the present invention, in which the _ microstructure of the concentrating layer is beaded. Figure 9 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer is in the shape of a lens. [Explanation of main component symbols] 10,100: concentrating sheet 11,101: substrate 1 2 : concentrating structure • 13 : protective film 102, 202, 303, 402, 502: concentrating layer 1 0 3 : scratch-resistant layer • 104: Hard cover layer 105: inorganic particles -10-