M307764 (1) 八、新型說明 【新型所屬之技術領域】 本創作係關於組裝於液晶顯示裝置之背光元件之光學 • 薄片，具有擴散及聚光之光學特性，可有效增強液晶顯示 器面板之亮度。 【先前技術】 | 一般而言，液晶顯示器（簡稱「LCD」）之主要結構 包含面板與背光模組兩大部分，面板部分包括例如氧化銦 錫（ITO )導電玻璃、液晶、配向膜、彩色濾光片、偏光 片、驅動積體電路等，背光模組部分則包含例如燈管、導 光板及各種光學膜等。爲使LCD能夠呈現更好的觀賞角 度與色彩，目前業界已有諸多嘗試，例如，已知可藉由增 加燈管數目來提高LCD面板之亮度，然而，此不但容易 導致過多熱量蓄積於液晶顯示器中，而影響到其他元件的 φ 壽命與品質，同時會導致電力消耗過大，而無法滿足許多 資訊類用品必須仰賴電池以離線使用之要求。目前而言， 在背光模組中利用各式各樣之光學膜，提供一種能提高 L C D面板亮度以使光源做最有效率之發揮、卻不需更動任 * 何元件設計或消耗額外能源的做法，已成爲最經濟與簡便 的解決方案。 擴散膜係位於導光板之上方，其可將透過導光板之光 線做散射處理，讓光的分佈更加均勻，以達到霧化的效 果。一般常用的擴散膜是利用透明細顆粒作爲散射粒子， -4- (2) (2)M307764 (1) VIII. New description [New technical field] This is the optical sheet of the backlight unit assembled in the liquid crystal display device. It has the optical characteristics of diffusion and condensing, which can effectively enhance the brightness of the liquid crystal display panel. [Prior Art] In general, the main structure of a liquid crystal display ("LCD") includes two parts: a panel and a backlight module. The panel portion includes, for example, indium tin oxide (ITO) conductive glass, liquid crystal, alignment film, and color filter. The light module, the polarizer, the driving integrated circuit, and the like, and the backlight module portion includes, for example, a lamp tube, a light guide plate, various optical films, and the like. In order to enable the LCD to exhibit better viewing angles and colors, many attempts have been made in the industry. For example, it is known that the brightness of the LCD panel can be increased by increasing the number of lamps. However, this is not only easy to cause excessive heat accumulation in the liquid crystal display. In addition, it affects the life and quality of φ of other components, and at the same time leads to excessive power consumption, which cannot meet the requirements of many information products that must rely on the battery for offline use. At present, the use of a variety of optical films in the backlight module provides a way to increase the brightness of the LCD panel so that the light source can be used most efficiently without having to change the component design or consume additional energy. , has become the most economical and simple solution. The diffusion film is located above the light guide plate, which scatters the light transmitted through the light guide plate to make the light distribution more uniform to achieve the atomization effect. The commonly used diffusion film uses transparent fine particles as scattering particles, -4- (2) (2)
M307764 並使用接合劑與硬化劑產生交鏈反應， 於高透光性的基板，其光學行爲是利月 而產生光擴散的效果。而聚光片譯 (Brightness Enhancement Film ) | film)，係在厚度僅50-200 // m的聚画 能UV光將特殊壓克力樹脂硬化成微瓶 膜主要的功能在藉由折射與內部全 (lightguide )發出至四面八方之散亂 中至約±35度的正視角（On-ax is)方[ΐ 亮度。 一般傳統背光模組1 0，如圖1所 先使用一片擴散膜1 2讓光達到霧化Κ 放置一至二片聚光片11，將四面八方5 並集中至約± 3 5度的正視角方向，此力 加，而背光模組組裝上亦變的更爲複雜 以將散射粒子密著 I光線穿過散射粒子 〖界習稱爲增亮膜 泛稜鏡片（prism i光學薄膜上利用高 3稜鏡結構。而增亮 :反射將自導光板 的光線收集，並集 !]，以提高L C D的 示，大多於光源1 3 I效果，在其上方再 :散亂的光線收集， ^法之缺點爲成本增M307764 uses a bonding agent to form a cross-linking reaction with a hardener, and the optical behavior of a substrate having high light transmittance is a light-diffusion effect. And Brightness Enhancement Film | film) is a special function of hardening a special acrylic resin into a micro-bottle film with a thickness of only 50-200 // m. The main function of the film is by refraction and internal The light guide is emitted to the on-ax is square [ΐ brightness] of about ±35 degrees in all directions. Generally, the conventional backlight module 10, as shown in FIG. 1, uses a diffusion film 1 2 to make the light reach the atomization Κ. One to two concentrating sheets 11 are placed, and the four sides are concentrated to a positive viewing angle of about ±35 degrees. This force is added, and the assembly of the backlight module is also more complicated to make the scattering particles adhere to the I-rays through the scattering particles [the term is known as the brightness enhancement film ubiquinone film (the use of the prism i optical film is high) Structure. While brightening: the reflection will collect the light from the light guide, and gather!], to improve the LCD display, mostly the light source 1 3 I effect, above it: scattered light collection, ^ the disadvantage of the method is Cost increase
【新型內容】 有鑑於此，本創作之目的係在提俘 聚光功能的複合光學膜，其可簡化背为 降低製造成本。 本創作之一種複合光學膜，包含： 一側包含至少一具聚光效果之擴散層’ 擴散層由混有透明微粒之樹脂層所構尽 一微結構形式之聚光層’其特徵在於携 一種兼具有擴散及 模組的組裝，並可 一基材，該基材之 其中該聚光效果之 ;該擴散層上包含 散層之透明微粒的 -5- (3) (3)M307764 折射率大於聚光層的折射率，且差値爲〇·〇 5至1.1。 【實施方式】 圖2爲本創作之複合光學膜的側視圖。本創作之複合 光學膜1 0 0所使用之基材1 〇 1，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（PMMA);聚烯烴樹脂（polyolefin resin)，如聚乙 燃（PE)或聚丙燒（PP);聚醯亞胺樹脂（polyimide resin );聚碳酸酯樹脂（p 〇 1 y c ar b ο n at e r e s i η );聚胺基 甲酸酯樹脂（polyurethane resin );三醋酸纖維素 (TAC );或彼等之混合物。較佳者爲聚對苯二甲酸乙二 酯、聚甲基丙烯酸甲酯、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50 μπι (微米）至約25 0 μιη之間。 本創作之複合光學膜1 〇 〇具有聚光及擴散之特性’爲 了達到擴散之功效，其基材1 〇 1之上表面包含一具聚光效 果之擴散層103，上述擴散層1〇3係藉由在基材101之上 表面塗佈一混有透明微粒105之樹脂層1〇4所構成。其中 該透明微粒之折射率爲1·65至2.5，最佳爲1.9。 上述擴散層103中之透明微粒105係爲不同粒徑之珠 粒，該透明微粒1 0 5之粒徑大小介於1至5 0微米之間’ -6 - (4) M307764 較佳爲3至30微米，最佳爲5至20微米。 可用於本創作中的透明微粒1 05種類並無书 可爲玻璃珠粒或含金屬氧化物之塑膠微粒。上劲 並無特殊限制，其例如但不限於丙烯酸樹脂、 脂、胺基甲酸酯樹脂、矽酮樹脂或彼等之混合衫 氧化物種類並無特殊限制，其例如但不限於 (Ti02 )、二氧化矽（Si02 )、氧化鋅（ZnO ) (BaS04 )、氧化鋁（Al2〇3 )、氧化鉻（Zr02 ) 混合物。而最佳之透明微粒1 05係爲玻璃珠粒。 爲達到光線聚光效果，本創作在上述擴散層 表面包含一聚光層102，其具有1.4至1.7之折 佳爲1.5。該聚光層102係於擴散層103之上方 樹脂、光起始劑和交聯劑之組合物而形成。適用 係熟悉此技術領域者所熟知者，其例如但不限 脂、聚丙烯酸酯樹脂或聚碳酸酯樹脂等。適用於 光起始劑並無特殊限制，係經光照射後會產生自 透過自由基之傳遞引發聚合反應者，其例如爲二 適用之交聯劑，例如爲具有一或多個官能基之（ 烯酸酯類，較佳係爲具多官能基者，以提高玻 度。 本創作之聚光層1 〇 2可以具微結構形式，例 所示之規則或不規則稜鏡形狀的聚光層1 02、如 之圓錐形狀的聚光層202、如圖5所示之立體角 光層3 02等。較佳地，該聚光層102上具有規則 :殊限制， 塑膠微粒 苯乙烯樹 ;而金屬 二氧化鈦 、硫酸鋇 或彼等之 103之上 射率，最 塗佈包含 之樹脂， 於聚酯樹 本創作之 由基，而 苯甲酮。 甲基）丙 璃轉化溫 如如圖3 圖4所示 形狀的聚 或不規則 (5) (5)M307764 且頂角爲60°至120°的棱鏡形狀，最佳爲頂角爲90°之規則 稜鏡，此類型聚光層具有較佳之集光效果，故可使顯示器 具備增強之輝度。 如圖6所示，爲了提高複合光學膜1 00的功能性，可 於基材1 0 1的另一側塗佈一高擴散粒子塗層1 06，而其之 霧度根據JIS K7 136標準方法測得不低於98%。其中該高 擴散粒子107之粒徑爲1至50微米，較佳爲1至10微 米。此高擴散粒子塗層能讓光更均勻化並提高輝度。 本創作複合光學膜1 〇〇同時具有聚光結構1 02及擴散 結構1 03，可用於液晶顯示器之背光源中，以增強液晶顯 示器面板之亮度，且可有效降低模組生產成本及減少模組 中其他膜片（如聚光片及擴散膜等）之使用。 【圖式簡單說明】 圖1爲習知之背光模組示意圖。 圖2爲本創作之實施例之側視圖。 圖3爲本創作之實施例之立體圖，其中聚光層之微結 構爲棱鏡形狀。 圖4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5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6爲本創作之另一實施例之側視圖。 (6) M307764[New content] In view of this, the purpose of this creation is to capture a concentrating optical composite film, which simplifies the back to reduce manufacturing costs. A composite optical film of the present invention comprises: a diffusion layer comprising at least one concentrating effect on one side, a concentrating layer of a diffusion structure formed by a resin layer mixed with transparent particles, characterized by carrying a And having a diffusion and assembly of the module, and a substrate, wherein the substrate has a light collecting effect; the diffusion layer comprises a transparent layer of 5 - (3) (3) M307764 refractive index It is larger than the refractive index of the light-concentrating layer, and the difference is 〇·〇5 to 1.1. Embodiments Fig. 2 is a side view of a composite optical film of the present invention. The substrate 1 〇 1 used in the composite optical film of the present invention can be known to those skilled in the art to which the present invention pertains, such as glass or plastic. The above plastic substrate is not particularly limited, and is not limited to, for example, but not limited to, a polyester resin such as polyethylene terephthalate (PET); a polyacrylate resin such as polymethacrylic acid. Ester (PMMA); polyolefin resin, such as polyethene (PE) or polypropylene (PP); polyimide resin; polycarbonate resin (p 〇1 yc ar b ο n At eresi η ); polyurethane resin; cellulose triacetate (TAC); or a mixture thereof. Preferred are polyethylene terephthalate, polymethyl methacrylate, cellulose triacetate or mixtures thereof. The thickness of the substrate generally depends on the desired optical product, preferably between about 50 μm (microns) and about 25 0 μm. The composite optical film 1 of the present invention has the characteristics of concentrating and diffusing. In order to achieve the effect of diffusion, the surface of the substrate 1 〇1 includes a diffusion layer 103 having a concentrating effect, and the diffusion layer 1 〇 3 The resin layer 1〇4 mixed with the transparent fine particles 105 is coated on the upper surface of the substrate 101. The transparent particles have a refractive index of from 1.65 to 2.5, most preferably 1.9. The transparent particles 105 in the diffusion layer 103 are beads of different particle diameters, and the size of the transparent particles 1 0 5 is between 1 and 50 μm. -6 - (4) M307764 is preferably 3 to 30 microns, preferably 5 to 20 microns. The transparent particles that can be used in this creation are not classified as glass beads or metal oxide-containing plastic particles. The strength is not particularly limited, and the type of the mixed shirt oxide such as, but not limited to, an acrylic resin, a fat, a urethane resin, an anthrone resin, or the like, is not particularly limited, and is, for example but not limited to, (Ti02), a mixture of cerium oxide (SiO 2 ), zinc oxide (ZnO) (BaS04 ), alumina (Al 2 〇 3 ), and chromium oxide (ZrO 2 ). The best transparent particles 015 are glass beads. In order to achieve the light concentrating effect, the present invention comprises a concentrating layer 102 on the surface of the diffusion layer, which has a folding of 1.4 to 1.7 of 1.5. The light concentrating layer 102 is formed by a combination of a resin, a photoinitiator, and a crosslinking agent above the diffusion layer 103. Suitable for use in those skilled in the art, such as, but not limited to, fats, polyacrylate resins or polycarbonate resins. The photoinitiator is not particularly limited, and is a person who initiates a polymerization reaction by transmission of a permeating radical after light irradiation, and is, for example, a suitable crosslinking agent, for example, having one or more functional groups ( The enoate, preferably a polyfunctional group, is used to increase the glass. The concentrating layer 1 〇 2 of the present invention may have a microstructure, a regular or irregular 稜鏡 shaped concentrating layer as shown in the example. 1 02, such as a conical shaped concentrating layer 202, a solid-angle optical layer 322 as shown in FIG. 5, etc. Preferably, the concentrating layer 102 has a rule: a special limitation, a plastic styrene tree; Metal titanium dioxide, barium sulfate or their above 103, the most coated resin, based on the polyester tree, while benzophenone. Methyl) propylene conversion temperature as shown in Figure 3 Figure 4 Polygon or irregular shape of the shape shown (5) (5) M307764 and a prism shape with an apex angle of 60° to 120°, preferably a rule of apex angle of 90°, this type of concentrating layer has a better set The light effect allows the display to have enhanced brightness. As shown in FIG. 6, in order to improve the functionality of the composite optical film 100, a high-diffusion particle coating 106 can be applied to the other side of the substrate 110, and the haze thereof is in accordance with the JIS K7 136 standard method. It was measured to be no less than 98%. The high diffusion particle 107 has a particle diameter of from 1 to 50 μm, preferably from 1 to 10 μm. This high-diffusion particle coating allows for more uniform light and improved brightness. The composite optical film 1 〇〇 has a concentrating structure 102 and a diffusion structure 103, which can be used in the backlight of the liquid crystal display to enhance the brightness of the liquid crystal display panel, and can effectively reduce the module production cost and reduce the module. Use of other diaphragms (such as concentrating sheets and diffusing films, etc.). BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional backlight module. Figure 2 is a side elevational view of an embodiment of the present invention. Figure 3 is a perspective view of an embodiment of the present invention in which the micro-structure of the concentrating layer is in the shape of a prism. Figure 4 is a perspective view of an embodiment of the present invention in which the microstructure of the concentrating layer is conical. Fig. 5 is a perspective view of the embodiment of the present invention, wherein the microstructure of the concentrating layer is a solid angle shape. Figure 6 is a side elevational view of another embodiment of the present invention. (6) M307764
【主要元件符 1 〇 :傳統 1 1 :聚光 1 2 :擴散 13 :光源 100 :複名 1 0 1 :基木 102， 202, 103 :擴营 104 :樹月丨 105：透日J 1〇6 :高 a 107 :高招 號說明】 背光模組 片 膜 ί光學膜 f 3 02 :聚光層 ^層 3微粒 I散之擴散層 I散粒子[Main component 1 〇: Traditional 1 1 : Concentration 1 2 : Diffusion 13 : Light source 100 : Rename 1 0 1 : Kimber 102, 202, 103 : Expansion 104 : Shu Yue 丨 105: Through J 1〇 6: high a 107 : high note description] backlight module film ί optical film f 3 02 : concentrating layer ^ layer 3 particles I scattered diffusion layer I scattered particles