200907397 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學膜、光學祺的製造方、 一 學膜模具裝置，特別是指一種兼具有擴散盘隼 光 ，、果先功能的光 子膜及其製造方法，以及用於成型該光學臈的模具裝置 【先前技術】 隨著液晶顯示器的廣泛使用，應用於液晶 *、不器中的 各種功能性膜層的改良與開發日益重要。如圖 y 口1所不，以 往液晶顯示器的背光模組主要包含：一圖未示出的光源、 —用於導光的導光板74,以及依序設置在該導光板74:方 的一擴散膜75與一增亮膜76等元件。其中，該導光板％ 上利用網點印刷形成數個間隔的印刷墨點74丨，以均勻引導 光線朝該擴散膜75射入。該擴散膜75包括數個朝向該增 壳膜76突出的擴散結構751，藉由擴散結構751之光擴散 效果以霧化導光板74上的印刷墨點741。為了達到顯示器 輕薄化、降低成本等目的，因此，目前有將擴散膜75之擴 散效果與增亮膜76之集光效果整合成一光學膜的開發研究 〇 參閱圖2、3，已知光學膜包含一基材71、一設置於該 基材71之一第一面711上的擴散層72，以及一設置於該基 材71之一第二面712的集光層73。所述擴散層72是朝向 液曰日顯不益的光源，該集光層73是朝向液晶顯示器的液晶 板。其中，該擴散層72的製法一般有兩種，一種是於擴散 層72成型時藉由滾輪滾壓，使其表面形成數個島狀或球狀 5 200907397 等形狀之擴散結構721 (如圖2)，藉由該等擴散結構721 之孤曲表面來達到光擴散效果。而另一種方法是直接於基 材71之第一面7丨丨塗佈含有光擴散劑之擴散層成型材料， 使該擴散層72固化成型後，其膜層中會散佈許多具有光擴 散作用的擴散微粒722 (如圖3 )。此外，例如美國專利 US2006/0114567、US2006/01 14569、台灣專利 561278、 580594、M307764、1274900、M306662 等專利案都提供了 相關技術。 然而，前述第一種擴散層72結構並無法提供良好的擴 散霧化效果，當光線經由擴散層72而射出該集光層乃後 ’仍會因為擴散效果;^佳而無法霧化該導光板上的印刷墨 點，因此於液晶顯示器上會看到印刷墨點所形成的陰影。 另一方面，使用第二種平面式而包含有擴散微粒722的擴 散層72 ’如果要達到足夠的擴散霧化效果，必需增加該擴 政層72的厚度’且會大幅降低光穿透率，而難以達到光學 膜增亮功能。 【發明内容】 因此，本發明之目的，g太捭 ， <曰的，即在k供—種具有良好之光擴 政作用並兼具有集光敎要夕本與替 文果之先子Μ、用於製造該光學膜的 模具，以及該光學膜的製造方法。 於是’本發明光學膜句含 — 于臊匕3 基材、一位在該基材之 一第一面的擴散層，以芬 y. _ „ 以及一位在S亥基材之一第二面並包括200907397 IX. Description of the Invention: [Technical Field] The present invention relates to an optical film, an optical yoke manufacturing method, a film-forming mold device, and more particularly to a device having a diffusion disk, and a function of the first Photonic film and its manufacturing method, and a mold device for molding the optical crucible. [Prior Art] With the widespread use of liquid crystal displays, the improvement and development of various functional layers applied to liquid crystal*s and devices are becoming increasingly important. . As shown in Figure 1, port 1, the backlight module of the liquid crystal display mainly comprises: a light source not shown in the figure, a light guide plate 74 for guiding light, and a diffusion device arranged in the light guide plate 74: The film 75 is an element such as a brightness enhancement film 76. Here, the light guide plate is formed by dot printing to form a plurality of spaced printing ink dots 74 丨 to uniformly guide the light toward the diffusing film 75. The diffusion film 75 includes a plurality of diffusion structures 751 protruding toward the envelope film 76, and the light diffusion effect of the diffusion structure 751 is used to atomize the printing ink dots 741 on the light guide plate 74. In order to achieve the purpose of lightening the display, reducing the cost, and the like, there has been a development of integrating the diffusion effect of the diffusion film 75 and the light collecting effect of the brightness enhancement film 76 into an optical film. Referring to Figures 2 and 3, the known optical film includes A substrate 71, a diffusion layer 72 disposed on the first surface 711 of the substrate 71, and a light collecting layer 73 disposed on the second surface 712 of the substrate 71. The diffusion layer 72 is a light source that is unfavorable toward liquid helium, and the light collection layer 73 is a liquid crystal panel that faces the liquid crystal display. There are generally two methods for manufacturing the diffusion layer 72. One is to form a plurality of island-like or spherical 5 200907397-shaped diffusion structures 721 by rolling the roller when the diffusion layer 72 is formed (see FIG. 2). The light diffusion effect is achieved by the solitary surface of the diffusion structures 721. In another method, a diffusion layer forming material containing a light diffusing agent is applied directly to the first surface 7 of the substrate 71. After the diffusion layer 72 is solidified, a plurality of light diffusing substances are dispersed in the film layer. Diffusion particles 722 (see Figure 3). Further, related art is provided by, for example, U.S. Patent Nos. 2006/0114567, US2006/01 14569, Taiwan Patent No. 561278, 580594, M307764, 1274900, and M306662. However, the structure of the first diffusion layer 72 does not provide a good diffusion atomization effect. When the light is emitted through the diffusion layer 72, the diffusion effect is still caused by the diffusion effect; The ink dots are printed on the upper surface, so that the shadow formed by the printing ink dots is seen on the liquid crystal display. On the other hand, if the diffusion layer 72' containing the second type of planar type and containing the diffusion particles 722 is to have a sufficient diffusion atomization effect, it is necessary to increase the thickness of the diffusion layer 72 and greatly reduce the light transmittance. It is difficult to achieve the optical film brightening function. SUMMARY OF THE INVENTION Therefore, the object of the present invention is that it is too embarrassing, < 曰, that is, in the k-supply, it has a good light expansion effect and has both the concentrating and the ancestors. A mold for producing the optical film, and a method for producing the optical film. Thus, the optical film of the present invention comprises a substrate of 臊匕3, a diffusion layer on the first side of the substrate, a fen y. _ „ and a second side of the substrate And includes
至少一個集光結構的集光异。兮撼畔庶A ，九層該擴放層包括至少一個擴散 結構’所述擴散結構且右一個 /、有個主體’以及數個位在該主體 200907397 表面的非平整部。 本發明光學膜模具裝置包含一第一模，該第一模具有 一個第一成型面，以及數個位在該第一成型面上的非平整 結構。 正 本發明光學膜的製造方法包含以下步驟： (A)準備該基材。 (B )於該第一模之第一成型面作表面改質處理，使該 第一成型面形成該等非平整結構。 (C) 形成該擴散層，將擴散層成型材料披覆於該基材 之第一面上，利用該第一模於該基材上成型出該擴散層， 且該擴散層的表面形成與該第一成型面對應之結構。 (D) 於該基材之第二面上形成該集光層。 藉由α置該擴散層與集光層，使本發 化光線與集光效果，且擴散層之非平整部的設計可= 升均勻擴散光線的能力。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之四個動;彳土杳你办丨认， 1固权仫貫施例的鲆細說明中，將可 清楚的呈現。在本發明袖钱> ,+, _ /3被。羊細描述之前，要注意的是，在 以下的說明内容中，類你沾μ s , 頰似的几件是以相同的編號來表示。 參閱圖4、5、6，本择明止風 不知明先學膜之第一較佳實施例是適 用於作為一圖未示出之液晶 件，所述液晶裝置還包含— 方的液晶板’該光學膜包含： 裝置的背光模組的其中一個元 光源’以及一個設置在光源前 一基材1、一擴散層2，以及 7 200907397 一集光層3。 施例 板。 一弟 叫Η兴一弟二面12，本貫 之第面11是朝向該光源，該第二面12是朝向該液晶 ㈣—面U上而朝向該光源，並包 括數個擴散結構2卜所述每—個擴散結構21具有—個主體 211 ’以及數個位在該主體211表面213的非平整部212。 本實施例之擴散結構21之主體2u為規則排列且截面為半 圓化的長條狀，在實施時，也可以為不規則排列、大小不 ㈣，狀 '島狀的分佈’此外’擴散結構21之主體211也 可以是截面為其他弧曲形狀的長條狀，由於主體211之結構 形狀為習用設計’故不再詳細列舉。且主體2ιι的最大寬度 為w，最大高度為η，ηλ^〇·4，藉由此高寬比的限制， 使该擴散層2可以提供良好的光擴散霧化能力。 本實施例之非平整部212皆為自主體211表面213突出 今大丨不的顆粒狀，在實施時，非平整部2丨2也可以是 突出的條狀或其他不規則的突起狀。亦即，非平整部212 ^°又5十只要使該擴散結構21之表面213不是平滑面而是有 阿低起伏的㈣面即可。該等擴散結構2ι之表面粗糖度為 ^，所述R1是指截取該擴散結構21表面上的單位長度内 ，高點與最低點的高度差，且。一⑽錢”，所述 早位長度是可以取每一個擴散結構之主體211之最大寬度 乍為基準，再測量在此寬度範圍内的高低點差值。 藉由非平整部212之設計來增加本體2ΐι之表面粗糙度 8 200907397 ’可以有效提升其擴散霧化能力。而t Rl<〇“m時，粗 糙度不夠而無法提升擴散霧化效果，t Ri>i〇…夺，會 因為粗造度太大而會影響到析出光線的強度，纟導致生產 製造上產生一定的困難度。 該集光層3是位在該第二面12上而朝向液晶板，並包 括數個集光結構3卜所述每-㈣光結構31具有—個主體 311，以及數個形成在該主體311表面313的非平整部312 ’本發明之集光層3藉由其主體311聚集光線以增強光線強 度後，再藉由非平整部312之設計達到擴散效果，避免光 線射出後集中於局部區域而在液晶板上產生局部亮紋，故 該集光層3之設計兼具有集光與擴散效果。 +所述H光層3之主體311可以選自稜鏡狀、柱狀、金字 塔狀、球狀等形狀的規則排列或不規則排列。本實施例之 非平整部312是自該主體311的表面313突出的顆粒，在實 施時也可以是突起的條狀或其他不規則突起狀。由於非平 整部312的厚度太小時其擴散能力不佳，而厚度太大時會 影響到主體3η的集光效果，故所述非平整部312的厚度為 dl，且較佳地 〇.2/zmsdlg1〇#m。 又 參閱圖7、8，而本發明用於製造上述 置之第：較佳實施例，包含:-用於成型該光學膜= 層2的第-模4,以及一用於成型該光學膜之集光層 二模5。 該第一模4包括一個截面呈圓形的滾動部4ι ,以及一 個自該滾動部41之表面徑向突出的成型冑42，該成型部 9 200907397 42具有一個由數個高低起伏之曲面所構成的第一成型面 ，以及數個位在該第一成型面421上的非平整結構422 ，所述非平整結構422可以是自第—成型自421上凹陷的 顆粒狀、條狀等結構。本實施例的非平整結構422是以凹 陷於第一成型面421的顆粒狀凹穴為例。 該第二模5包括-個截面呈圓形的滾動部5卜以及— Μ表面徑向突出的成型部52,該成型部52 為具有夕數個截面呈三角形的突塊所構成，並具有一個由 數個傾斜平面所構成的第二成型面， 二成型面521上的非平敫" 目位在该第 以是自第二成型面521 了構2,所述料整結構522可 實施例的非平整"冓522的顆粒狀、條狀等結構。本 粒狀凹六為例冓522疋以凹陷於第二成型面-的顆 實^㈣Μ'9,本發日月光學膜的製造方法之第一較佳 =，：配合上述光學膜模具裝置來製造光學： 造方法包含以下步驟： 〆表 (1) 進行步驟61 :準備基材卜 (2) 進行步驟62:於該第一模4 表面改質處理，所过·矣 成1面421作 電鐘、雷射加工等方式，本實施例是以二電解 ::表面_加工，以形成該等間隔分布的 平整結構422。 丨幻四八形的非 光㈣散層成型材料藉由^紫外 基材1之第-面11上，經由該第—模 10 200907397 4、滾壓《亥基材1並成型出該擴散層2，該擴散層2表面即形 成°亥第成型面421對應形狀之非平整部212 ,再利用 UV光線照射基材！使擴散層2固化勝合於基材工之第—面 11上。 ⑷進行步驟64:於該第二模5之第二成型面切作 表面改質處理，所述表面改質處理是可以使用喷砂、電解 電錢、雷射加工等方式，本實施例是使用喷砂處理方式， 且可以選擇地作_次、二次或多次喷砂處理 進行第二模5的表面袓抖各^ a ^ y 後，即形成該等間隔分布 的顆粒狀凹穴的非平整結構522。 丄、⑸進行步驟65:將集光層成型材料藉由UV (紫外 光)固化膠塗佈於該基材〗之第二面12上，經由該第」模卜 5滾壓該基材丨並成型出該 ' 成與該第二成型面52丨_ "集先層3表面即形 W光線照射基材i使隼光層：狀之非平整部312，再利用 材使集先層3固化膠合於基之第二φ 上。如此即形成如圖4所示之光學膜。 需要注意的是，本發明 & 序為限制，例如進行步驟6 = /不需以上述步驟順 即可直接進行步驟64第二之表面改質處理後， 以於基材！之第一、二面二 之:面改質處理，_ 光層3的成型材料，並—各別塗佈擴散層2與集 行-次uv固化勝合作業，…广4、5同時滾壓後進 時製作完成。 / 文層2與集光層3即可同 综上所述，本發明藉由該擴散層2與集光層3而同時 200907397 兼”有擴散霧化光線與集光效果，且擴散層2之非平整部 2U的3又计是有效提升均勻擴散光線的能力，目❿改善習知 光子臈擴散效果不佳之缺失，進而避免液晶板上產生導光 I7刷墨點的陰影’故使用本發明光學膜可以使液晶裝 i之亮度均勻，並實現液晶裝置之功能膜的整合。而該光 予膜t製造方法主要S藉由模具的表面改f來達成擴散層2 4 I表面的6又计需求，該製造方法快速方便，確實達到 本發明之目的。 B參閱圖10，本發明光學膜之第二較佳實施例，主要是 2七、另一種不同的擴散層2結構，該擴散層2之表面為連 續高低起伏的粗糙面，而本實施例之模具裝置的第一模4, 是使用Legend公司型號「36Εχτ」二氧化碳雷射加工機來 加工，故該第一成型面421作表面改質後成為連續凹突不 、’的粗I面，並形成多數個連結在一起的非平整結構。 此外’如果是以電解電鑛方法來作第—才莫4的表面加 工，该第一模4可以作為鍍物，故其第一成型面421表面 之金屬材料會被解離析出’或者是將第一帛4作為被鍍物 ，而使鍍物原子沈積吸附於第一成型面42〗上。上述兩種 電鑛方式，都會使該第-成型面421表面亦呈現連續的高 低起伏狀。 β參_ 11、12,本發明光學膜之第三較佳實施例，亦 是提供另一種不同結構的擴散層2,本實施例之擴散層2僅 包含一個擴散結構21，該擴散結構21包括一個具有一平坦 表面⑴的四方體形的主體2U，以及數個形成於該主體 12 200907397 211表面213的非平餐都91?，士赛·» y, 非卞覺4 212本實施例之非平整部212是 自主體211的表面213間隔突出的顆粒狀。 本實施例之模具裝置的第一模4 不供4疋僅包含一個呈四方 體形的成型部42，該成型部42之筮 Λ·- 又主丨 乏第—成型面421是呈水平 設置。而本發明光學臈的製造方法 衣乃/2r之第二較佳實施例，與 該第-較佳實施例大致相同，不同之處在於：本實施例之 擴散層成型材料是含有光擴散劑，故其中散佈有許多擴散 微粒214，在成型該擴散層2時， _ T肝°茨弟—杈4如圖12所 示朝該塗佈有擴散層成型材料的基材丨 ί & ’如此一來， 如圖U所示包含有擴散微粒214的擴散層2即可成型。而 本實施例所達成之功效與該第一較佳實施例相同，故不再 說明。 四較佳實施例之擴散層 而藉由表面改質處理過 的表面形成高低起伏的 麥閱圖13，本發明光學膜之第 2的擴散結構21是凹向上的設置， 的第一模4滾壓，亦使擴散結構21 粗糙面。 惟以上所述者，僅為本發明之較佳實施例而已，告不 定本發明實施之範圍，即大凡依本發明申請：利 說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1 導光板、 圖2 中的一 是一剖視分解圖，顯示一種習知背光模組 一擴散膜與一增亮膜； 是一種習知光學膜的剖視圖； 13 200907397 圖3是另一種習知光學膜的剖視圖； 圖4是本發明光學膜之一第一較佳實施例的局部立體 圖； 圖5是該第一較佳實施例的剖視圖； 圖6是取自圖5的局部放大圖； 圖7是一示意圖，顯示本發明光學膜模具裝置之一第 一較佳實施例，是用於成型出圖4所示之光學膜； .圖8是該光學膜模具裝置成型該光學膜的作動示意圖 圖9是本發明光學膜的劁袢太表 予肤扪裂龟方法之較佳實施例的流程 圖； 圖10是一局部的示意圖，顯示本發明光學膜之—第二 較佳實施例，以及-個用於成型該光學膜之_個擴散㈣ —個第一模； 圖11是本發明光學膜之—笛__ p /土番—/ , 予联之第二杈佳貫施例的局部剖視 圖； 圖12是-7F意圖’顯示本發明光學膜模具裝置之—第 二較佳實施例，用於成型出圖丨丨所示之光學膜；及 圖13疋局0卩的不意圖，顯示本發明光學膜之—第四 較佳實施例H個用於成㈣光學膜之_個擴散 —個第一模。 曰 14 200907397 【主要元件符號說明】 1 ···· ……基材 41»«··，·· ••滚動部 11… ......弟 面 42....... ••成型部 12··· .....•第一面 421 ••… ··第一成型面 2 .... ......擴散層 422…… •-非平整結構 21… ……擴散結構 5 ........ ••第二模 211 · ……主體 51....... ••滚動部 212 · ……非平整部 52........ ··成型部 213 · ......表面 521 ..... ••第二成型面 214 · ……擴散微粒 522 ..… ··非平整結構 3 .... ……集光層 R1…… ··擴散結構表面 31 ··· ……集光結構 粗糙度 311 · ……主體 dl....... ••集光層非平整部 312 · ......非平整部 厚度 313 · ......表面 W…… ••主體的最大寬度 4 .... •••…第一模 Η......... *，主體的最大兩度 15The concentration of at least one light collecting structure is different.兮撼A, nine layers of the expansion layer include at least one diffusion structure 'the diffusion structure and the right one /, one body' and a plurality of non-flat portions on the surface of the body 200907397. The optical film mold apparatus of the present invention comprises a first mold having a first molding surface and a plurality of non-flat structures positioned on the first molding surface. The method for producing an optical film of the present invention comprises the following steps: (A) preparing the substrate. (B) performing a surface modification treatment on the first molding surface of the first mold to form the first molding surface to form the non-flat structures. (C) forming the diffusion layer, coating a diffusion layer molding material on the first surface of the substrate, forming the diffusion layer on the substrate by using the first mold, and forming a surface of the diffusion layer The first molding surface corresponds to the structure. (D) forming the light collecting layer on the second side of the substrate. By placing the diffusion layer and the light collecting layer by α, the present light and the light collecting effect are obtained, and the design of the non-flat portion of the diffusion layer can be used to increase the ability to uniformly diffuse light. [Embodiment] With regard to the foregoing and other technical contents, features and effects of the present invention, the following four movements of the reference drawing are used in the following description; in the detailed description of the solid weight method, Will be clearly presented. In the invention of the sleeve money >, +, _ / 3 is. Before describing the sheep in detail, it should be noted that in the following description, the pieces you like are s, and the cheeks are represented by the same number. Referring to Figures 4, 5 and 6, the first preferred embodiment of the present invention is applicable to a liquid crystal device (not shown), and the liquid crystal device further includes a square liquid crystal panel. The optical film comprises: one of the elementary light sources of the backlight module of the device and a substrate 1 disposed on the light source, a diffusion layer 2, and 7 200907397 a light collection layer 3. Example board. One younger brother is called Xing Xing's two sides 12, the first face 11 is facing the light source, the second face 12 is directed toward the liquid crystal (four)-face U toward the light source, and includes a plurality of diffusion structures 2 Each of the diffusion structures 21 has a body 211 ' and a plurality of non-flat portions 212 located on the surface 213 of the body 211. The main body 2u of the diffusing structure 21 of the present embodiment has a long strip shape which is regularly arranged and has a semicircular cross section. When implemented, it may be irregularly arranged, the size is not (four), and the shape 'island-like' is further 'diffusion' 21 The main body 211 may have a long strip shape having a different curved shape, and since the structural shape of the main body 211 is a conventional design, it will not be enumerated in detail. Moreover, the maximum width of the main body 2ι is w, and the maximum height is η, ηλ^〇·4, so that the diffusion layer 2 can provide good light diffusion atomization capability by the limitation of the aspect ratio. The non-flat portions 212 of the present embodiment are all in the form of particles that protrude from the surface 213 of the main body 211. In practice, the non-flat portions 2丨2 may also be protruding strips or other irregular protrusions. That is, the non-flat portion 212 ^ ° and 50 may be such that the surface 213 of the diffusion structure 21 is not a smooth surface but has a low-lying (four) surface. The surface roughness of the diffusion structures 2i is ^, and the R1 is the height difference between the high point and the lowest point in the unit length on the surface of the diffusion structure 21. One (10) money", the early length is determined by taking the maximum width 乍 of the main body 211 of each diffusion structure as a reference, and then measuring the difference between the height and the low point in the width range. The design of the non-flat portion 212 is increased. The surface roughness of the body 2ΐι 8 200907397 'can effectively improve its diffusion atomization ability. And t Rl<〇“m, the roughness is not enough to improve the diffusion atomization effect, t Ri>i〇..., it will be rough If the degree is too large, it will affect the intensity of the precipitated light, which will cause certain difficulties in manufacturing. The light collecting layer 3 is located on the second surface 12 toward the liquid crystal panel, and includes a plurality of light collecting structures 3, each of the (four) light structures 31 has a main body 311, and a plurality of the main body 311 are formed in the main body 311. The non-flat portion 312 of the surface 313 of the present invention collects light by the main body 311 to enhance the light intensity, and then achieves a diffusion effect by the design of the non-flat portion 312, thereby preventing the light from being concentrated and then concentrated in a local area. A local bright grain is generated on the liquid crystal panel, so the design of the light collecting layer 3 has both a light collecting and a diffusing effect. + The main body 311 of the H-light layer 3 may be selected from a regular arrangement or an irregular arrangement of a shape such as a dome, a column, a pyramid, or a sphere. The non-flat portion 312 of this embodiment is a particle that protrudes from the surface 313 of the main body 311, and may be a strip shape or other irregular protrusion shape of the protrusion when it is implemented. Since the thickness of the non-flat portion 312 is too small, the diffusion ability is not good, and when the thickness is too large, the light collecting effect of the main body 3n is affected, so the thickness of the non-flat portion 312 is dl, and preferably 〇.2/ Zmsdlg1〇#m. Referring also to Figures 7 and 8, the present invention is directed to the manufacture of the above-described preferred embodiment comprising: - a first mold 4 for forming the optical film = layer 2, and a mold for molding the optical film The light collecting layer is two-mode 5. The first mold 4 includes a rolling portion 4ι having a circular cross section, and a forming cymbal 42 projecting radially from the surface of the rolling portion 41. The forming portion 9 200907397 42 has a curved surface composed of a plurality of high and low undulating surfaces. The first molding surface, and a plurality of non-flat structures 422 located on the first molding surface 421, the non-flat structure 422 may be a granular, strip-shaped or the like recessed from the first molding. The non-flat structure 422 of this embodiment is exemplified by a granular recess recessed in the first molding surface 421. The second mold 5 includes a rolling portion 5 having a circular cross section and a molding portion 52 which protrudes radially from the surface of the crucible, and the molding portion 52 is formed by a projection having a triangular cross section and having a projection. a second molding surface composed of a plurality of inclined planes, and the non-flat surface of the two molding surfaces 521 is in the second configuration surface 2, and the finishing structure 522 is an embodiment. The non-flatness "冓 522 has a granular, strip-like structure. The granular concave six is exemplified by 冓 522 疋 to be recessed on the second molding surface - the solid ^ (four) Μ '9, the first preferred method of manufacturing the optical film of the present day =,: with the above optical film mold device Manufacturing Optics: The manufacturing method comprises the following steps: 〆 Table (1) Step 61: Prepare the substrate (2) Perform step 62: Modify the surface of the first mold 4, and pass through the surface of the first mold 4 In the manner of clock, laser processing, etc., this embodiment is a two-electrolysis: surface-machining to form the flat structure 422 of the equally spaced distribution. The non-light (four) loose-layer molding material of the imaginary four-eighth shape is formed on the first surface 11 of the ultraviolet substrate 1 through the first mold 10 200907397 4, and the substrate 1 is rolled and the diffusion layer 2 is formed. The surface of the diffusion layer 2 forms a non-flat portion 212 of a shape corresponding to the shape of the surface 421, and the substrate is irradiated with UV light. Curing the diffusion layer 2 is achieved over the first surface 11 of the substrate. (4) performing step 64: cutting the second molding surface of the second mold 5 into a surface modification treatment, which may be performed by sand blasting, electrolytic electricity money, laser processing, etc., in this embodiment, Sand blasting method, and optionally _ times, two times or multiple times of blasting to perform surface turbulence of the second dies 5 after each ^ a ^ y, that is, the non-distributed granular pockets are formed The structure 522 is flattened.丄, (5) performing step 65: coating the light-harvesting layer forming material on the second surface 12 of the substrate by UV (ultraviolet light) curing adhesive, and rolling the substrate through the first mold 5 Forming the 'forming surface and the second molding surface 52 丨 & & 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集 集Glued to the second φ of the base. Thus, an optical film as shown in Fig. 4 was formed. It should be noted that the present invention & is a limitation, for example, step 6 = / without the above steps, the surface modification of the second step of step 64 can be directly performed to the substrate! The first, two sides of the two: surface modification treatment, _ light layer 3 molding materials, and - each coating diffusion layer 2 and the assembly line - secondary uv curing win cooperation, ... wide 4, 5 simultaneous rolling The production is completed when going backwards. The layer 2 and the light collecting layer 3 can be similarly described. According to the present invention, the diffusion layer 2 and the light collecting layer 3 simultaneously have a diffusion atomizing light and a light collecting effect, and the diffusion layer 2 The non-flat 2U 3 is also an effective way to enhance the uniform diffusion of light, and to improve the lack of good diffusion of the conventional photon ,, and to avoid the shadow of the light-guide I7 ink-printing point on the liquid crystal panel. The film can make the brightness of the liquid crystal device uniform, and realize the integration of the functional film of the liquid crystal device. The photo-pre-film t manufacturing method mainly achieves the 6-side requirement of the diffusion layer by the surface modification of the mold. The manufacturing method is quick and convenient, and indeed achieves the object of the present invention. B. Referring to Figure 10, a second preferred embodiment of the optical film of the present invention is mainly a structure of two different diffusion layers 2, and the diffusion layer 2 The surface is a rough surface with continuous high and low undulations, and the first mold 4 of the mold apparatus of the present embodiment is processed by a Legend model "36Εχτ" carbon dioxide laser processing machine, so that the first molding surface 421 is surface modified. Become a continuous concave Not the thick side of ', and form a plurality of non-flat structures joined together. In addition, if the surface is processed by the electrolytic ore method, the first mold 4 can be used as a plating material, so that the metal material on the surface of the first molding surface 421 is dissociated and precipitated, or As a substrate to be plated, the deposit of the deposit atoms is adsorbed on the first molding surface 42. Both of the above-mentioned electro-mineral methods have a continuous high and low undulation shape on the surface of the first molding surface 421. β -11, 12, a third preferred embodiment of the optical film of the present invention, also provides a diffusion layer 2 of another different structure. The diffusion layer 2 of the present embodiment includes only one diffusion structure 21, and the diffusion structure 21 includes A quadrangular body 2U having a flat surface (1), and a plurality of non-flat meals 91 formed on the surface 213 of the main body 12 200907397 211, 士赛·yy, non-sounding 4 212 non-flatness of the embodiment The portion 212 is in the form of particles that are spaced apart from the surface 213 of the body 211. The first mold 4 of the mold apparatus of the present embodiment does not include only one molding portion 42 having a square shape, and the molding portion 42 is formed to be horizontally disposed. The second preferred embodiment of the method for producing an optical crucible of the present invention is substantially the same as the second preferred embodiment, except that the diffusion layer molding material of the present embodiment contains a light diffusing agent. Therefore, a plurality of diffusion particles 214 are dispersed therein, and when the diffusion layer 2 is formed, the substrate is coated with the diffusion layer molding material as shown in FIG. The diffusion layer 2 containing the diffusion particles 214 as shown in FIG. The functions achieved in this embodiment are the same as those in the first preferred embodiment, and therefore will not be described. The diffusion layer of the fourth preferred embodiment forms a high and low undulation on the surface modified by the surface modification. The second diffusion structure 21 of the optical film of the present invention is disposed in a concave direction, and the first mode 4 is rolled. The pressure also makes the diffusion structure 21 rough. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the scope of the present invention, that is, the simple equivalent changes and modifications made by the present invention are still in the present invention. Within the scope of the patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional exploded view showing a conventional backlight module, a diffusion film and a brightness enhancement film; FIG. 1 is a cross-sectional view of a conventional optical film; 13 200907397 Figure 3 is a cross-sectional view of another conventional optical film; Figure 4 is a partial perspective view of a first preferred embodiment of the optical film of the present invention; Figure 5 is a cross-sectional view of the first preferred embodiment; Figure 6 is taken from the figure Figure 5 is a schematic view showing a first preferred embodiment of the optical film mold device of the present invention for forming the optical film shown in Figure 4; Figure 8 is the optical film mold device FIG. 9 is a flow chart showing a preferred embodiment of the method for forming an optical film of the present invention; FIG. 10 is a partial schematic view showing the optical film of the present invention. a second preferred embodiment, and - a diffusion (four) - a first mold for molding the optical film; Figure 11 is a second film of the optical film of the present invention - flute __p / soil - / A partial cross-sectional view of a preferred embodiment; Figure 12 is a -7F intended to show the hair A second preferred embodiment of the optical film mold apparatus for forming an optical film as shown in FIG. 3; and FIG. 13 is a schematic view showing a fourth preferred embodiment of the optical film of the present invention. Example H is used to form a diffusion of the (four) optical film - a first mode.曰14 200907397 [Explanation of main component symbols] 1 ····......Substrate 41»«··,··••Rolling section 11.........Daddy 42....... • • Molding part 12······• First side 421 ••...··First molding surface 2 ..........Diffusion layer 422... • Non-flat structure 21... ...diffusion structure 5 ........ ••second mode 211 ·...body 51.......••rolling part 212·...non-flat part 52....... ··Molding part 213 ·...surface 521 ..... ••2nd molding surface 214 ·...Diffusion particle 522 ..... ··Non-flat structure 3 .......... Layer R1... ··Diffusion structure surface 31 ··· 】 Light collection structure roughness 311 · ... body dl....... •• Light collection layer non-flat portion 312 · ...... Flat thickness 313 · ...... surface W... •• Maximum width of the main body 4 .... •••...first Η......... *, the maximum two degrees of the main body 15