200931071 九、發明說明： 【發明所屬之技術領域】 . 本發明有關於一種增亮擴散膜、增亮擴散膜之製作方 法及其背光模組，尤指一種藉由柱狀透鏡結構、反射層及 擴散層等構件組合，透過增亮擴散膜的結構變化，以應用 於背光模組，提高輝度及視角之增亮膜、增亮膜之製作方 法及其背光模組。 【先前技術】 隨著現代科技的發展，加上目前光電產業技術的進步 下，液晶顯示器係應用在各式各樣的通訊產品或電子產 品，而顯示器晝面所需光源，係透過背光模組所提供。其 中透過背光模組内的擴散片結構，以擴散光線，使光均勻 分佈輸出。 請參閱第一圖所示，係為習知一種擴散光學膜片之示 意圖。此習知技術中，係主要在一透明膜片1 Oa上形成一 擴散膜11a，並且擴散膜11a係添加複數顆微粒12a，用 以進行光線折射、反射與散射作用，藉以達到擴散光線的 效果。然而，因著微粒12a將光線散射，以及所形成之擴 散膜表面110a較為粗糙的緣故，以致光線過度散射，而 . 造成擴散膜11a的透光不佳；因此，將使背光模組内的光 源無法有效利用，導致發光亮度不足、不均勻的情況發 生，並且使得光源的損耗率過高。 6 200931071 致此，為了改善習知發光亮度不足，導致背光模組發 光效率較差的問題，係提出另外改善的習知技術。 . 請參閱第二圖所示，係為習知一種應用於液晶顯示器 之背光模組内之增亮膜結構圖式，係用於提高整體的發光 效率。如圖所示，該增亮膜結構lb係包含：一主體部10b 及多數個棱鏡結構lib。該等稜鏡結構lib皆為三角柱形 狀，且規則排列於主體部10b上；其中，藉由增亮膜結構 e lb，使得大部分光線集中於較小的出光視角，達到光線聚 集效果。然而，在較大的出光視角上，仍造成發光其他光 線無法有效集中，導致漏光的情況發生。其中，有關增亮 膜之稜鏡結構部分，係發展出多種相關的技術，以利用特 定的技術手段來達到發光效率。 (1) 、如美國專利US 5917664號中，係揭露一種具有稜 鏡結構之增亮膜，其中每二個稜鏡結構係兩兩成對，並且 兩個稜角或谷角均相同。透過稜鏡結構，使得光線經由該 ❿ 增亮膜達到低視角出光效果，故具有良好的發光效率。然 而，此技術仍未改善增亮膜於較大視角時，出現漏光現象。 (2) 、如美國專利US 6707611B2號中，係揭露一種具 有重複性稜鏡之光學膜，可用於消除光線輝度不均勻的問 題；然而，此技術仍未改善光學膜在較大角度時，發光漏 光的問題。 在上述習知技術中，雖然能透過增亮膜來增加發光效 率；然而，仍然無法改善光線經由增亮膜後，於較大視角 200931071 發光漏光的問題。 . 是以，習知增亮膜雖然因將光線集中收斂，使得發光 . 效率較佳，但也因此降低發光出光的視角；再者，上述增 亮膜係利用菱鏡結構作為其結構形狀，因而容易造成結構 的刮損與磨耗問題，進而影響整體的出光效果。 緣是，本發明人有感上述缺失之可改善，且依據多年 來從事此方面之相關經驗，悉心觀察且研究之，並配合學 ❹ 理之運用，而提出一種設計合理且有效改善上述缺失之本 發明。 【發明内容】 本發明之主要目的係提供一種增亮擴散膜、增亮擴散 膜之製作方法及其背光模組。該增亮擴散膜係兼具將光集 中增亮與擴散效果之複合擴散膜結構，並藉由擴散微粒之 添加，達到光擴散度與出光視角大小的控制，以改善傳統 Q 增亮膜因光線收斂而降低視角的問題。 本發明之另一目的在於，係透過增亮擴散膜之柱狀透 鏡結構、擴散層及反射層之配合，使得從反射層進入柱狀 透鏡結構的光線路徑能有效地被限制，並且使反射後的光 線可均勻分散，以增加光利用率，同時，利用柱狀透鏡結 • 構之形狀設計，以提高其表面耐磨性，避免刮傷容易而影 ' 響出光效果。 本發明之又一目的在於，係透過增亮擴散膜的結構變 化，以改良光學結構路徑，藉以應用於背光模組中，以達 8 200931071 到增加出光亮度，大幅提高光的擴散度；因此，透過該增 亮擴散膜的改良結構設計，進而能提高背光模組之整體輝 度及發光視角。 為了達成上述之目的，本發明係提供一種增亮擴散 膜，係包括：一柱狀透鏡結構、一擴散層及一反射層。其 中柱狀透鏡結構具有一出光面及一相對出光面的反射面； 擴散層均勻形成在柱狀透鏡結構之出光面；反射層設置於 反射面，並且反射層具有複數個反射結構。其中，出光面 具有複數個凸出部，反射面形成複數個反射區域，每一個 反射區域可介於每二個凸出部之間，每一反射結構設置於 每一反射區域，藉以使每兩個反射結構間係形成一光學路 徑，該光學路徑可對應於該柱狀透鏡結構之凸出部。 本發明另提供一種增亮擴散膜之製作方法，步驟如 下：第一，提供一柱狀透鏡結構（lenticular)，其具有一 出光面及一相對出光面的反射面，且出光面形成複數凸出 Q 部；第二，於反射面形成複數反射區域，且每一反射區域 介於每二個凸出部之間；第三，分別在每一反射區域設置 反射結構，使每二個反射區域間係形成一光學路徑，光學 路徑可準確對應於柱狀透鏡結構之凸出部；第四，於柱狀 透鏡結構的出光面上彼覆一擴散層，且擴散層可均勻覆著 於每一個凸出部表面上。 本發明又提供一種具有增亮擴散膜之背光模組，係包 括：一反射罩，容置一發光光源；一擴散板，設置於該發 光光源之上方；一增亮擴散膜，設置於該擴散板之上方； 9 200931071 一面板，設置於該增亮擴散膜之上方；一外框架，其配合 反射罩且一併封裝擴散板、增亮擴散膜及面板。藉以使發 光光源經由擴散板，並透過增亮擴散膜，有效地在面板的 表面形成一均勻發光效果。 為了使貴審查委員能更進一步暸解本發明為達成預 定目的所採取之技術、手段及功效，請參閱以下有關本發 明之詳細說明與附圖，相信本發明之目的、特徵與特點， 當可由此得一深入且具體之瞭解，然而所附圖式僅提供參 考與說明用，並非用來對本發明加以限制者。 【實施方式】 請參閱第三圖至第五圖所示，為本發明增亮擴散膜一 較佳實施例之相關圖式。該增亮擴散膜ί包括有：一柱狀 透鏡結構2、一反射層3及一擴散層4。 該柱狀透鏡結構2具有一出光面2 0及一反射面21， 兩者係彼此相對應，在本發明中，該柱狀透鏡結構2為一 具有高折射率之塑膠材質，其中該塑膠材質為聚對苯二甲 酸乙二醇酯（PET)、聚碳酸酯（PC)或PEN之透明材質；藉以 使光線透過柱狀透鏡結構2而平行射出，促使光線收斂增 亮效果。其中該出光面20係形成有複數個凸出部200，該 反射面21形成有複數個反射區域210,每一個反射區域210 係介於每二個凸出部200之間；該等凸出部200為一用於 將光線導正集中之結構；該等凸出部200可為一具有將光 線進行聚集之凸出形狀，例如：圓形、橢圓形、三角形或 10 200931071 方形的幾何形狀，透 光線進行導正华中=出部200的設計，有效將大角度 反射面21表面的缺°亥等反射區域210分別為-凹陷於該 狀透鏡結構2上。二^提供反射層3固定地容納在柱 形或橢圓形等任音幾210的缺口形狀為圓形、三角 人射角度不同而口形狀係可以隨著光線之200931071 IX. Description of the invention: [Technical field of the invention] The present invention relates to a brightening diffusion film, a method for fabricating a brightness enhancing diffusion film, and a backlight module thereof, and more particularly to a lenticular lens structure, a reflective layer, and The combination of the diffusion layer and the like, through the structural change of the brightness enhancement diffusion film, is applied to the backlight module, the brightness enhancement film of the brightness and the viewing angle, the manufacturing method of the brightness enhancement film, and the backlight module thereof. [Prior Art] With the development of modern technology and the advancement of the current optoelectronic industry technology, liquid crystal displays are applied to a wide variety of communication products or electronic products, and the light source required for the display is through the backlight module. Provided. The diffuser structure in the backlight module is used to diffuse light to evenly distribute the light. Referring to the first figure, it is a schematic of a conventional diffusing optical film. In the prior art, a diffusion film 11a is formed mainly on a transparent film 1 Oa, and a plurality of particles 12a are added to the diffusion film 11a for light refraction, reflection and scattering, thereby achieving the effect of diffusing light. . However, the light is scattered by the particles 12a, and the surface 110a of the formed diffusion film is rough, so that the light is excessively scattered, and the light transmission of the diffusion film 11a is poor; therefore, the light source in the backlight module will be made. It cannot be effectively utilized, resulting in insufficient brightness and unevenness of light emission, and the loss rate of the light source is too high. 6 200931071 Therefore, in order to improve the problem that the luminance of the backlight module is insufficient and the backlight module is poor in light-emitting efficiency, a conventionally improved technique is proposed. Referring to the second figure, a brightness enhancement film structure pattern for use in a backlight module for a liquid crystal display is used to improve the overall luminous efficiency. As shown, the brightness enhancing film structure lb includes a body portion 10b and a plurality of prism structures lib. The 稜鏡 structures lib are all triangular prism-shaped and regularly arranged on the main body portion 10b; wherein, by brightening the film structure e lb , most of the light is concentrated on a small light-emitting viewing angle to achieve a light collecting effect. However, in the large viewing angle, the other light rays are still unable to be effectively concentrated, resulting in light leakage. Among them, regarding the structure of the enamel structure of the brightness enhancement film, various related technologies have been developed to utilize specific technical means to achieve luminous efficiency. (1) In the U.S. Patent No. 5,917,664, a brightness enhancement film having a prismatic structure is disclosed in which each of the two 稜鏡 structures is paired in pairs and the two corners or valleys are the same. Through the 稜鏡 structure, light is passed through the 增 brightening film to achieve a low viewing angle light-emitting effect, so that it has good luminous efficiency. However, this technique has not improved the light leakage phenomenon of the brightness enhancement film at a large viewing angle. (2) As disclosed in US Pat. No. 6,707,611 B2, an optical film having a repetitive twist is disclosed, which can be used to eliminate the problem of uneven brightness of light; however, this technique does not improve the illumination of the optical film at a large angle. The problem of light leakage. In the above-mentioned prior art, although the brightness enhancement effect can be increased by the brightness enhancement film; however, it is still impossible to improve the problem of light leakage at a large viewing angle 200931071 after the light passes through the brightness enhancement film. Therefore, although the brightness enhancement film converges by concentrating the light, the efficiency is better, but the viewing angle of the illuminating light is also reduced. Furthermore, the brightness enhancing film is formed by using a prism structure as a structural shape thereof, thereby easily causing The scratch and wear problems of the structure, which in turn affect the overall light output. The reason is that the inventor has felt that the above-mentioned deficiencies can be improved, and based on years of experience in this field, carefully observed and studied, and in conjunction with the use of academic clerk, a rational design and effective improvement of the above-mentioned defects are proposed. this invention. SUMMARY OF THE INVENTION The main object of the present invention is to provide a brightness enhancing diffusion film, a method for fabricating a brightness enhancing diffusion film, and a backlight module thereof. The brightness-enhancing diffusion film has a composite diffusion film structure that concentrates light and diffuses light, and controls the light diffusion degree and the light-emitting angle of view by adding the diffusion particles to improve the traditional Q brightness enhancement film due to light. Convergence reduces the problem of viewing angles. Another object of the present invention is to ensure that the ray path from the reflective layer into the lenticular lens structure can be effectively limited by the cooperation of the lenticular lens structure, the diffusion layer and the reflective layer of the brightness enhancing diffusion film, and after the reflection The light can be evenly dispersed to increase the light utilization efficiency, and at the same time, the shape of the lenticular lens structure is used to improve the surface wear resistance, and it is easy to avoid scratching. Another object of the present invention is to improve the optical structure path by enhancing the structural change of the diffusion film, thereby applying it to the backlight module to increase the brightness of the light by increasing the brightness of the light up to 8 200931071; Through the improved structural design of the brightness enhancing diffusion film, the overall luminance and the viewing angle of the backlight module can be improved. In order to achieve the above object, the present invention provides a brightness enhancing diffusion film comprising: a cylindrical lens structure, a diffusion layer and a reflective layer. The lenticular lens structure has a light-emitting surface and a reflective surface opposite to the light-emitting surface; the diffusion layer is uniformly formed on the light-emitting surface of the lenticular lens structure; the reflective layer is disposed on the reflective surface, and the reflective layer has a plurality of reflective structures. Wherein, the light-emitting surface has a plurality of convex portions, and the reflective surface forms a plurality of reflective regions, each of the reflective regions may be interposed between each of the two convex portions, and each reflective structure is disposed in each of the reflective regions, so that each of the two reflective regions The reflective structures form an optical path that corresponds to the projections of the lenticular lens structure. The invention further provides a method for fabricating a brightness enhancing diffusion film, the steps are as follows: First, a lenticular lens structure is provided, which has a light emitting surface and a reflecting surface opposite to the light emitting surface, and the light emitting surface forms a plurality of convex protrusions. a second portion; a plurality of reflective regions are formed on the reflective surface, and each reflective region is interposed between each of the two convex portions; and third, a reflective structure is disposed in each of the reflective regions, so that between each of the two reflective regions Forming an optical path, the optical path can accurately correspond to the convex portion of the lenticular lens structure; fourth, a diffusion layer is coated on the light-emitting surface of the lenticular lens structure, and the diffusion layer can be uniformly covered on each convex On the surface of the exit. The invention further provides a backlight module with a brightness-enhancing diffusion film, comprising: a reflection cover for accommodating a light-emitting source; a diffusion plate disposed above the light-emitting source; and a brightness-enhancing diffusion film disposed on the diffusion Above the board; 9 200931071 A panel is disposed above the brightness enhancing diffusion film; an outer frame that cooperates with the reflector and encapsulates the diffusion plate, the brightness enhancing diffusion film and the panel. In order to make the light source pass through the diffuser and pass through the brightening diffuser, a uniform illuminating effect is effectively formed on the surface of the panel. In order to enable the reviewing committee to further understand the techniques, means, and effects of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The invention is to be understood as being limited and not limited by the scope of the invention. [Embodiment] Please refer to the third to fifth figures, which are related diagrams of a preferred embodiment of the brightness enhancing diffusion film of the present invention. The brightness enhancing diffusion film ί includes a columnar lens structure 2, a reflective layer 3, and a diffusion layer 4. The lenticular lens structure 2 has a light-emitting surface 20 and a reflective surface 21, which are corresponding to each other. In the present invention, the lenticular lens structure 2 is a plastic material having a high refractive index, wherein the plastic material It is a transparent material of polyethylene terephthalate (PET), polycarbonate (PC) or PEN; so that light is transmitted through the lenticular lens structure 2 in parallel, which promotes light convergence and brightening effect. The light-emitting surface 20 is formed with a plurality of protrusions 200, and the reflection surface 21 is formed with a plurality of reflection regions 210, each of which is interposed between each of the two protrusions 200; the protrusions 200 is a structure for guiding light rays to be concentrated; the protrusions 200 may be a convex shape having a light collecting, for example, a circle, an ellipse, a triangle, or a 10 200931071 square geometry. The light is guided by the centering portion=the output portion 200, and the reflection region 210 of the surface of the large-angle reflecting surface 21 is effectively recessed on the lens structure 2, respectively. The aperture layer 3 is fixedly received in a cylindrical or elliptical shape, and the shape of the notch 210 is circular, and the angle of the triangle is different, and the shape of the mouth can follow the light.
射巴竹川&又°十各種的缺口形狀；在第三圖中，該反 射£域210的缺口係為一半圓形狀。 卜，^㈣3係設胁餘狀透縣構2之反射面21 /、中反射層3具有複數個反射結構3() 別係設置在每一及射卩θ 01Λ 叉对'，，口構 士 £成210之缺口内，以形成如同缺口 八、，於反射層3的結構中，每兩個反射結構3〇之間係形 成光卞路徑L，光學路徑L係準確地對應於柱狀透鏡結 構2的凸㈣2QG ’以有效限制光線以柱狀透鏡結構2 的/光學路徑’並且使其他未射入該光學路徑L之光線能夠In the third figure, the notch of the reflection domain 210 is a semicircle shape.卜, ^ (4) 3 series set the fascinating shape of the 21st reflection surface 21 /, the middle reflection layer 3 has a plurality of reflection structures 3 () are set in each and the 卩θ Λ Λ 对 pair ', In the gap of 210 into 210, in the structure of the reflective layer 3, a pupil path L is formed between each of the two reflective structures 3, and the optical path L accurately corresponds to the cylindrical lens structure. 2 convex (four) 2QG 'to effectively limit light to the optical path of the lenticular lens structure 2 and to enable other rays that are not incident on the optical path L
進仃反射，進而增加光線利用率。在本發明設計中，該光 學路徑L的範圍大小為該柱狀透鏡結構2之1/3~1/1〇〇寬 度大小，除了使光線射入該光學路徑L外，其他皆被該反 射層3之反射結構30所遮蔽。 配合第五圖所示，於反射層3之反射結構3〇令，係具 有一樹脂部31及複數個反射微粒32。其中，該樹脂部31 為UV樹脂、熱硬化樹脂或環氧樹脂（Epoxy)等材質，而反 射微粒32係為具有高折射率材質’或者如Ti〇2等類似的 無機材料，用以提高反射後光線的均勻分散效果，進而重 11 200931071 灯先線射出，大幅地增加 另外，該等反射微粒32亦可於不影_ 度。 意地設計出各種形狀，諸如.η 3線折射率之下，任 开W u ®形、三角形、菱形等幾何 ^ ，其尺寸顧以介於G.1〜3Gum之間為最佳。此 外，反射微粒32盥榭脂邱w AA丄 取住此 最佳。 # 31的成份比例以1/1000〜1/2為 ❹ Φ 上4可均勾地形成於柱狀透鏡結構2的出光面20 上，且後者在每一個凸出部2 透鏡結構2集中而平行射出 \二传&經由柱狀 行發散咬田w 再透過擴散層4將光線進 不^制1Γ 〃中’擴散層4的材料選料分，係可依昭 ‘二衣，來選擇不同材料。當擴散層4為一透過“壓合手段Infrared reflection, which in turn increases light utilization. In the design of the present invention, the range of the optical path L is 1/3 to 1/1 〇〇 of the lenticular lens structure 2, except that light is incident on the optical path L, and the other is reflected by the reflective layer. The reflective structure 30 of 3 is shielded. As shown in the fifth figure, the reflective structure 3 of the reflective layer 3 has a resin portion 31 and a plurality of reflective particles 32. The resin portion 31 is made of a material such as a UV resin, a thermosetting resin or an epoxy resin, and the reflective particles 32 are made of a high refractive index material or an inorganic material such as Ti 2 or the like to enhance reflection. The uniform dispersion effect of the rear light, and then the weight 11 200931071, the first line of the light is emitted, and the reflective particles 32 can also be greatly reduced. Intentionally, various shapes are designed, such as .η 3 line refractive index, and any geometrical ^ such as Wu x shape, triangle shape, diamond shape, etc., and the size is preferably between G.1 and 3 Gum. In addition, the reflective particles 32 盥榭 邱 w w AA 丄 take this best. The composition ratio of #31 is 1/1000 1/2 1/2. Φ The upper 4 can be uniformly formed on the light-emitting surface 20 of the lenticular lens structure 2, and the latter is concentrated in each of the projections 2 and the lens structure 2 is parallel. Ejection \ 二传 & 发 咬 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由 经由. When the diffusion layer 4 is a through-pressure means
膠材料可為聚對苯二射率的塑膠材料，該塑 或PEN之透明材質。^乙―醇醋⑽）、聚碳酸酯（PO =擴散層4為一透過“塗佈手段“形成的結構時 =斤:率選擇與其塗料之間，差異性係以控制卿 該擴散層4之塗料由-透明樹腊部4〇及複數 二^或％氧樹脂等透明材質，而擴散微粒41係為壓 ^ )、聚錢s旨⑽或聚苯乙烯㈣之透明材質； '、欢微拉41的添加下，以控制光線的擴散度及視 夕，擴散微粒41的形狀係為圓形、橢圓形或任 ° 、、1之戎何形狀，並且擴散微粒41的尺寸以介於 m之間為最佳；在塗料的混合比例方面，擴散微粒 12 200931071 4/與透明樹脂部40的成份比例係以ι/ι〇〇〇㈠/2之間為 l的居度大小，係可以依照其擴散度的需求情況而任意調 請^第六圖所示，係為本發明增亮擴散膜另—實施 例之不忍圖。在本實施例中，該增亮擴散膜的差別結構在 於.柱狀透鏡結構2的反射區域21〇之缺口形狀係為 ::吏:反射結構3。容置於缺口而形成三角形的反射結 再第七圖與“圖所示，係為本發明增亮擴散膜 ❹ 於·二:ίΓ』。本實施例與上述兩實施例之差異在 ^ ;“反射區域210可直接於柱狀透鏡結構2的反射面 、上，以形成一預定的反射空間（如第七圖中，呈現 個框格）’藉以提供反射層3的反射結構3()設置；藉此\ 額外形成缺"的情況之T，料反射結構3G·貼 效果射空間的方式，即可達到與上述反射層相同的 、古明參閱第九圖所示，為本發明增亮擴散膜之製作方法 之k程方塊圖，同時配合第三與四圖，其步驟如下： 首先，提供-減透鏡結構2,其具有—出光面別及 :出目面2Q之反射面21’該出光面20形成複數個 區域加S1G1)，其次’於該反射面2丨形成複數個反射 G或210，並且使每一反射區域21〇準確地介於每二個凸 13 200931071 出部200之間（SI03);再者，分別於每一反射區域2i〇上 設置一反射結構30，使得每二個反射區域21〇之間形成一 光學路徑L，該光學路徑L準確對應於該柱狀透鏡結構2 的凸出部200(S105);最後，於該柱狀透鏡結構2的出光 面20披覆一擴散層4,使該擴散層4均勻地附著在每一個 凸出部200表面上，以完成增亮擴散膜1(sl〇7)。 在增亮擴散膜的製作過程中，其透過一預定押出或塗 ❹佈手段，使得擴散層4與反射層3之反射結構3〇能一併地 設置於柱狀透鏡結構2的上、下表面上。針對上述二種製 程，說明如下： 第一種，藉由一預定押出手段，將擴散層4與反射結 構30, 一併地壓合於柱狀透鏡結構2的凸出部2〇〇表面與 反射區域210内。在此押出手段中，該等反射區域21〇皆 為一凹陷於該反射面21的缺口（如第三與四圖中，反射區 或為缺口），這過將該光學路徑L精確地對應於柱狀透鏡結 ❿構2的凸出部2QCMi，再藉由屢合方式，使得該反射結& 30旎壓合於該反射區域21〇的缺口内，並且一併將擴散層 4麗合於柱狀透鏡結構2的出光面2()，以形成該增亮 膜1結構。 第二種，藉由一預定塗佈手段，將擴散層4與反射結 構—併地塗佈於該柱狀透鏡結構2的凸出部2卯表面 及該等反射區域210内。在此塗佈手段中，該等反射區域 21〇皆為-形成於該反射面21上的反射空間（如第七與八 圖中’反射區域為反射空間），透過將該光學路徑l精確地 14 200931071 對應於柱狀透鏡結構2的凸出部200後，再藉由塗佈製程， 使得反射結構30可塗設於反射區域210的反射空間内，同 時，一併將擴散層4塗佈於柱狀透鏡結構2的出光面20。 請參閱第十圖所示，係為本發明增亮擴散膜應用於背 光模組之分解示意圖。該背光模組係包括：一增亮擴散膜 1、一擴散板6、一面板7、一反射罩8及一框架9。 其中，反射罩8具有一容置空間80，用以將一發光光 源5容納於反射罩8之底端。擴散板6係設置於發光光源 5上方。增亮擴散膜1係設置於擴散板6上方。面板7則 設置於增亮擴散膜1上方。框架9係與反射罩8相配合， 藉以將擴散板6、增亮擴散膜1及面板7 —併地封裝於反 射罩8上。藉此，當發光光源5經由擴散板6後，可透過 增亮擴散膜1而增加發光亮度及擴散輝度，進而在面板7 表面形成一均勻發光，並且由該框架9的出光口 90發出高 亮度及高擴散度的光源。 綜上所述，本發明柱狀透鏡結構、擴散層及反射層之 配合，使得增亮擴散膜具有下列特點： (1) 、使得增亮擴散膜兼具將光集中增亮與擴散效果之 複合擴散膜結構，並藉由擴散微粒之添加，達到光擴散度 與出光視角大小的控制，以改善傳統增亮膜因光線收斂而 降低視角的問題。 (2) 、當光線路徑由反射層進入柱狀透鏡結構時，能有 效被限制，並使反射光線均勻分散，增加光利用率；藉由 柱狀透鏡結構之形狀設計，以提高其表面耐磨性，避免刮 15 200931071 傷容易而影響出光效果。 (3)、透過增亮擴散膜之間，柱狀透鏡結構與反射層之 間的變化，以改變光學結構路徑，使背光模組具有高出光 亮度及高擴散性；因此，透過該增亮擴散膜的改良結構設 計，進而能提高背光模組之整體輝度及發光視角。 以上所述，僅為本發明最佳之一的具體實施例之詳細 說明與圖式，惟本發明之特徵並不侷限於此，並非用以限 制本發明，本發明之所有範圍應以下述之申請專利範圍為 準，凡合於本發明申請專利範圍之精神與其類似變化之實 施例，皆應包含於本發明之範疇中，任何熟悉該項技藝者 在本發明之領域内，可輕易思及之變化或修飾皆可涵蓋在 以下本案之專利範圍。 【圖式簡單說明】 第一圖為習知一種擴散光學膜片之示意圖。 第二圖為習知一種背光模組内之增亮膜結構之示意圖。 ❿ 第三圖為本發明增亮擴散膜一較佳實施例之組合示意圖。 第四圖為本發明增亮擴散膜，第三圖之分解示意圖。 第五圖為本發明增亮擴散膜中，該反射結構之局部放大圖。 第六圖為本發明增亮擴散膜另一實施例之組合示意圖。 第七圖為本發明增亮擴散膜再一實施例之分解示意圖。 • 第八圖為本發明增亮擴散膜，第七圖之組合示意圖。 第九圖為本發明增亮擴散膜之製作方法之流程方塊圖。 第十圖為本發明增亮擴散膜應用於一背光模組之分解示意 圖。 16 200931071 【主要元件符號說明】 [習知]The glue material can be a polyethylene terephthalate plastic material, which is a transparent material of plastic or PEN. ^ B-alcoholic vinegar (10)), polycarbonate (PO = diffusion layer 4 is a structure formed by "coating means" = kg: rate selection between its coating, the difference is to control the diffusion layer 4 The coating consists of a transparent material such as a transparent tree wax portion 4 and a plurality of two or a plurality of oxygen resins, and the diffusion particles 41 are transparent materials of the pressure ^), the money s (10) or the polystyrene (four); With the addition of the pull 41, in order to control the degree of diffusion of the light and, in the meantime, the shape of the diffusion particles 41 is circular, elliptical or any geometric shape of 1, and 1, and the size of the diffusion particles 41 is between m The ratio is the best; in terms of the mixing ratio of the coating, the ratio of the composition of the diffusion particles 12 200931071 4/ to the transparent resin portion 40 is ι/ι 〇〇〇 (1)/2, which is the size of l, which can be The requirement of the degree of diffuse is arbitrarily adjusted. The sixth figure shows that the present invention is a brightening diffusion film. In the present embodiment, the difference structure of the brightness-increasing film is that the shape of the notch of the reflection region 21 of the lenticular lens structure 2 is ::吏: the reflection structure 3. The seventh embodiment of the reflective junction which is placed in the notch and forms a triangle is shown in the figure, which is the brightness-enhancing diffusion film of the present invention. The difference between the present embodiment and the above two embodiments is "; The reflective area 210 may be directly on the reflective surface of the lenticular lens structure 2 to form a predetermined reflective space (as in the seventh figure, presenting a sash) 'by providing a reflective structure 3 () of the reflective layer 3; In this way, the extra T is formed, and the material of the reflective structure 3G·paste effect space can be achieved, and the same as the above-mentioned reflective layer can be achieved, as shown in the ninth figure, which is the brightening diffusion of the present invention. The k-block block diagram of the method for fabricating the film, together with the third and fourth figures, has the following steps: First, a minus-lens structure 2 is provided, which has a light-emitting surface and a reflection surface 21' of the exit surface 2Q. The face 20 forms a plurality of regions plus S1G1), and secondly, a plurality of reflections G or 210 are formed on the reflective surface 2丨, and each reflective region 21〇 is accurately interposed between every two protrusions 13 200931071 (200) ( SI03); again, set on each reflection area 2i〇 The reflective structure 30 is such that an optical path L is formed between each of the two reflective regions 21, which corresponds to the projection 200 of the lenticular lens structure 2 (S105); finally, the lenticular lens structure The light-emitting surface 20 of 2 is coated with a diffusion layer 4, and the diffusion layer 4 is uniformly attached to the surface of each of the projections 200 to complete the brightness-enhancing diffusion film 1 (sl〇7). In the process of fabricating the brightness-enhancing diffusion film, the diffusion layer 4 and the reflection structure 3 of the reflection layer 3 can be disposed on the upper and lower surfaces of the lenticular lens structure 2 through a predetermined extrusion or coating method. on. For the above two processes, the following is explained: First, the diffusion layer 4 and the reflective structure 30 are collectively pressed against the surface of the protrusion 2 of the lenticular lens structure 2 by a predetermined extruding means and reflected. Within area 210. In the extruding means, the reflective areas 21 are all recessed in the reflective surface 21 (as in the third and fourth figures, the reflective area or the notch), which corresponds to the optical path L accurately corresponding to The convex portion 2QCMi of the lenticular lens structure 2 is further pressed into the notch of the reflective region 21〇 by an overlapping manner, and the diffusion layer 4 is fused to The light-emitting surface 2 () of the lenticular lens structure 2 is formed to form the brightness enhancement film 1. Secondly, the diffusion layer 4 and the reflective structure are applied to the surface of the projection 2 of the lenticular lens structure 2 and the reflection regions 210 by a predetermined coating means. In the coating means, the reflective regions 21 are all - a reflective space formed on the reflective surface 21 (as in the seventh and eighth views, the reflective region is a reflective space), through which the optical path 1 is accurately 14 200931071 After the projections 200 of the lenticular lens structure 2 are corresponding to the projections 200, the reflective structure 30 can be applied to the reflective space of the reflective region 210, and at the same time, the diffusion layer 4 is applied to The light exit surface 20 of the lenticular lens structure 2. Please refer to the tenth figure, which is an exploded view of the brightening diffusion film applied to the backlight module of the present invention. The backlight module comprises: a brightness enhancing diffusion film 1, a diffusion plate 6, a panel 7, a reflection cover 8 and a frame 9. The reflector 8 has an accommodating space 80 for accommodating an illuminating light source 5 at the bottom end of the reflector 8. The diffusion plate 6 is disposed above the illuminating light source 5. The brightness enhancement diffusion film 1 is disposed above the diffusion plate 6. The panel 7 is disposed above the brightness enhancing diffusion film 1. The frame 9 is coupled to the reflector 8, whereby the diffusing plate 6, the brightness enhancing diffusion film 1 and the panel 7 are collectively packaged on the reflecting cover 8. Thereby, when the illuminating light source 5 passes through the diffusing plate 6, the illuminating brightness and the diffusing brightness can be increased by the brightening of the diffusing film 1, and a uniform illuminating light is formed on the surface of the panel 7, and the light exiting port 90 of the frame 9 emits high brightness. And a high diffusivity source. In summary, the combination of the lenticular lens structure, the diffusion layer and the reflective layer of the present invention makes the brightness-enhancing diffusion film have the following characteristics: (1) The brightness-enhancing diffusion film has a combination of light concentration and diffusion effects. Diffusion film structure, and by the addition of diffusion particles, the control of the degree of light diffusivity and the angle of view of the light exiting is improved to improve the problem that the conventional brightness enhancing film reduces the viewing angle due to light convergence. (2) When the light path enters the lenticular lens structure from the reflective layer, it can be effectively limited, and the reflected light is evenly dispersed to increase the light utilization efficiency; the shape of the cylindrical lens structure is designed to improve the surface wear resistance. Sex, avoid scratching 15 200931071 The injury is easy to affect the light effect. (3) by brightening the difference between the lenticular lens structure and the reflective layer between the diffusion films to change the optical structure path, so that the backlight module has high brightness and high diffusivity; therefore, diffusion through the brightness enhancement The improved structural design of the film can further improve the overall brightness and illuminating angle of view of the backlight module. The above description is only a detailed description of the specific embodiments of the present invention, and the present invention is not limited thereto, and is not intended to limit the present invention, and all the scope of the present invention should be as follows. The scope of the patent application is subject to the scope of the present invention, and any person skilled in the art can easily think of it in the field of the present invention. Variations or modifications may be covered by the patents in this case below. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic view of a conventional diffusing optical film. The second figure is a schematic diagram of a brightness enhancing film structure in a conventional backlight module. ❿ The third figure is a combination diagram of a preferred embodiment of the brightening diffusion film of the present invention. The fourth figure is a schematic exploded view of the brightening diffusion film of the present invention. Figure 5 is a partial enlarged view of the reflective structure in the brightening diffusion film of the present invention. Figure 6 is a schematic view showing the combination of another embodiment of the brightening diffusion film of the present invention. Figure 7 is an exploded perspective view showing still another embodiment of the brightening diffusion film of the present invention. • The eighth figure is a combination of the brightening diffusion film of the present invention and the seventh drawing. The ninth drawing is a flow block diagram of a method for fabricating a brightening diffusion film of the present invention. The tenth figure is an exploded schematic view of the brightening diffusion film of the present invention applied to a backlight module. 16 200931071 [Description of main component symbols] [Practical]
10a 透明膜片 11a擴散膜 ll〇a擴散膜表面 12a 微粒 lb 增免膜結構 10b 主體部 lib 稜鏡結構 [本發明] 1 增亮擴散膜 2 柱狀透鏡結構 20 出光面 200 凸出部 21 反射面 210 反射區域 3 反射層 30 反射結構 31 樹脂部 32 反射微粒 4 擴散層 40 樹脂部 41 擴散微粒 5 發光光源 6 擴散板 7 面板 8 反射罩 80 容置空間 9 框架 90 出光口 L 光學路徑 1710a transparent film 11a diffusion film lla diffusing film surface 12a fine particle lb reinforced film structure 10b main body lib 稜鏡 structure [present invention] 1 brightening diffusion film 2 lenticular lens structure 20 light emitting surface 200 convex portion 21 reflection Surface 210 Reflecting region 3 Reflecting layer 30 Reflecting structure 31 Resin portion 32 Reflecting particles 4 Diffusion layer 40 Resin portion 41 Diffused particles 5 Illuminating light source 6 Diffuser plate 7 Panel 8 Reflector 80 Housing space 9 Frame 90 Light exit L Optical path 17