201100870 六、發明說明： 【發明所屬之技術領域】 本發明侧於—種光學則。特定言之，本發明係關於 -種具有類透鏡錄表__結構光學則，及其該光學膜 片的製造方式。 、 【先前技術】 背光模組是液晶顯示裝置之重要零組件之一因為液晶 Ο 〇 面板本身不發光’背賴_功騎在提供足触均勾亮度 的面光源以供液晶顯示面板使用。 請參閱圖一所示，習知的背光模組包含-光源lm、一 導光板102以及-光學膜片組1〇3。其中，背光模組係為一 側光式背光模組’絲1G1可為冷陰極螢光燈管錢數的發 光二極體。 光學膜片組103包含一下擴散膜片m、-第-稜鏡膜 片112、一第二稜鏡膜片113及—上擴散膜㈣。其中第一 棱鏡膜片112、第二棱鏡膜只m ·α , 賴片113及上練則114係依序 疊設於下擴散膜片115之上。来風胺μ λ 尤予膜片組103則設置於導光 板102之上，光源ι01之光線（圖未顯示）射入導光板 後，經由導光板1〇2底面之網點或結構破壞光線之全反射 後，進而射入光學膜片組1〇3， 先源101之光線經過下擴散 膜片111進行初步擴散，再經由 田第—稜鏡膜片112及第二稜 3 201100870 鏡膜片113提高正向出光的亮度，最後再由上擴散膜片114 稍微擴散光線。 上擴散膜片114除了稍微擴散光線的作用外，還能避免 使用者直接看到稜鏡膜片上的亮紋，且具有保護第二棱鏡膜 片113之功能，及遮蔽兩棱鏡重疊擺放時彼此產生的干涉現 象。 在此技藝已知，將兩片稜鏡膜片彼此以9〇度交叉疊放 〇 可增加轴上的光量。然而，使用此堆疊方式之光學顯示器會 因兩相鄰膜片表面之接觸造成的光學耦合現象，在目視上會 直接看到如濕潤蘊開的形象。此現象改良之具體實施例敘述 於美國專利5777328號。 另外，各稜鏡元件之側面交錯形成的尖峰通常都很尖 銳’如此能將離開背光源之轴上光通量最為有效，但是也容 易使的稜鏡結構的刮傷，使的在製作此光學膜片時必須加上 0 保護膜保護，待到生產線上組裝背光模組時再予以移除。為 了要增加稜鏡的耐刮性改良的具體實施例可將稜鏡結構改為 在尖端從尖角改為鈍角。此現象改良之具體實施例敘述於中 華民國專利申請案號第093136005。 另一種解決方式則為將第二稜鏡片113基材的第二表面 上再塗佈一層帶有擴散效果的霧化層，藉由此霧化層將第_ 稜鏡與第二稜鏡間的濕潤蘊開的現象與兩棱鏡間可能的刮傷 4 201100870 問題避開。此現象改良之具體實補敘述於美國專利 5598280、5995288、6825984 號。 此外還有-轉決方式，藉由稜柱結構的頂部點狀凸出 物’藉以達到擴散效果。此現象改良之具體實施例敘述於中 華民國專利申請案號第96132728。 然而’整個背光模組中光學膜片组1〇3之組成膜片數量 較多，會使得背光模組i之生產成本增加，且目前習知的各 〇 觀善方式均會造成此絲則製作成本與序的增加。 因此’如何提供一種光學膜片’既可簡化背光模組1之 結構，降低生產成本，且能兼具上擴散膜片114所有的功能， 實為當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種擴散增亮膜 0 片，稜鏡表面有不規則之類球狀透鏡的原弧表面。 緣疋，為達上述目的，依本發明之一種擴散增亮膜片包 含-基材以及-稜柱結構。基材係具有—第—表面及一第二 表面’第-表面與第二表面係相對設置，稜柱結構係設置於 觚 第表面之上稜柱表面具有不規則的類透鏡弧狀結構。 承上所述，依本發明之一種擴散增亮膜片，藉由稜柱結 構表面具有不規則排列的類透鏡弧狀結構，與習知技術相 5 201100870 本發月在儘量不降低傳統光學膜之輝度表現的前提下， 可避免兩片光學膜片搭配時造成光學輕合現象，並且因具有 兴散的效S在生產或組裝過程的刮傷可以有遮瑕的效果， 進而減V #光模組中稜鏡片之使用數量，以降低棱鏡片的生 產成本與背光模組的組裝成本。 本發明之目的’在於提供—種成型上賴散增亮膜 片之製造方法。 €) 本發明擴散增☆則的製造方法，是n傳統之增亮膜 片，藉由一表面有不規則凸狀結構之滾輪施壓此增亮膜片， 得到一表面稜柱結構呈現不規則的凹透鏡結構的母膜後，再 藉由臈獅的方式將此母麟為-有帶有不規狀類球狀透 鏡的膜片，此膜轉膜的生產優點在於可以降低對模具的需求 量，進而降低生產成本。 【實施方式】 〇 以下將參照相關圖式，說明依據本發明較佳實施例之一 種擴散增焭膜片’其中相同的元件將以相同的符號加以說明。 第一實施例 請參閱圖二之一所示’本發明第一實施例之一種擴散增 亮膜片包含一基板203以及一樹酯層301，其中樹酯層301 的結構則為柱狀稜鏡201與不規則的類透鏡弧型結構202共 同組成。 6 201100870 圖二之二則為此擴散增亮膜樹酯層301之俯視圖，圖中 可清楚闡述出稜柱結構201與不規則透鏡、结構2〇2的相對關 係，圖一之二則為此擴散增亮膜片的立體圖，圖中可清楚看 出透鏡結構202存在於稜柱結構2〇丨的底部位置。 在此實施例中，基板203係具有相對設置之一第一表面 205及一第二表® 206 ’第一表面205與第二表面2〇6係相 對设置。其中，基板203之材質可為聚對苯二甲酸乙二酸酯 O (polyethylene TerePhthalate，PET)、聚碳酸酯（polycarbonate， PC)、聚氯乙烯（Poly Vinyl Chloride)、環烯共聚物（cyclic olefm copolymer，COC)、金屬鉻合物_環烯共聚物 (metallocene-based cyclic olefin copolymer, mCOC )、或其混 合物。而基板203之厚度約為12;^m至5〇〇//m。本實施例 中，基板203係以厚度125 之聚對苯二甲酸乙二酸酯 (PolyethyleneTerephthalate，PET)為例。 〇 第一表面205上具有一棱柱結構201，在這稜柱結構201 的表面則又具有不規則排列之類透鏡弧型結構，而此棱 柱結構201與透鏡結構202統稱為樹酯層3〇1，樹酯層301 為一光硬化材料。此棱柱結構201並非本發明之重點，於此 不加贅述。 此透鏡結構202是一體成型於稜鏡結構2〇1的表面上， 每個透鏡結構202是自稜柱結構201底部向上成行，且高度 7 201100870 與密度不等，為避免透鏡弧型結構202的體積過大，降低了 整體背光模組的輝度降低以及在背光模組中造成亮點或暗 點，類透鏡弧型結構202的大小必須加以限制，在本實施例 中類透鏡弧型結構202的高度不得高於稜柱結構2〇1的三分 之二。 其次，請參照圖三與圖四，以說明本實施例製造方法 之較佳實施例。 〇 如圖三所示’此擴散聚光膜的製造方式包含光硬化成 型與壓印製程；請同時參閱圖三與圖四之一至圖四之三’ 此製程是利用一塗佈裝置501將光硬化樹脂塗佈在基板 203表面，再利用一表面有稜鏡結構的押花滾輪5〇2滾過同 時，立即以紫外光503照射使其固化，得到一帶有稜柱結 構201的增亮膜片402,接下來此增亮膜片402的棱鏡面再 以一表面具有凸透鏡結構之滚輪506滚壓，得到一在稜鏡 G 結構的峰頂帶有凹陷結構303的膜片403。 接下來在膜片403上經由塗佈裝置501將光映化樹脂塗 佈在結構面303 ’貼上基板203後經由一鏡面金屬滾輪504 壓合’同時以紫外光503照射使其固化，經剝離後即可得到 一稜柱結構201的底部具有透鏡結構202的擴散增亮膜片 404。 第二實施例 8 201100870 請參閱圖五之一與圖五之二所示，本發明第二實施例之 一種擴散增亮膜片包含一基板203以及一樹酯層3〇4，其中 樹酉a層304的結構則為稜柱結構2〇1、稜柱底部有的類透鏡 弧狀結構202及稜柱頂部的透鏡結構2〇4共同組成。圖五之 二則為此擴散增亮膜的立體圖，圖中可清楚看出類透鏡弧型 結構202均存在於稜柱結構2〇1的底部位置，類透鏡弧型結 構204則存在於稜柱結構201的頂部位置，其中樹醋層3〇4 Ο 的結構則為柱狀稜鏡201與不規則的類透鏡弧型結構2〇2及 204共同組成。 在此實施例中’基板203係具有相對設置之一第一表面 205及一第二表面206，第一表面205與第二表面2〇6係相 對設置。其中，基板203之材質可為聚對苯二甲酸乙二酸酯 (Polyethylene Ter印hthalate，PET )、聚碳酸酯（polycarb〇nate， PC)、聚氯乙烯（P〇ly Vinyl Chloride)、環烯共聚物（cyclic 〇 olefin c〇p〇1ymer, coc)、金屬鉻合物-環烯共聚物 (metallocene-based cyclic olefin copolymer，mCOC )、或其混 合物。而基板203之厚度約為12至5〇〇#m。本實施例 中’基板203係以厚度125//m之聚對苯二甲酸乙二酸酯 (PolyethyleneTerephthalate, PET)為例。 第一表面205上具有一稜柱結構2〇1，在這稜柱結構2〇1 的底部有不規則的透鏡結構202，稜柱結構頂部也有不規則 201100870 的透鏡結構204。而此稜鏡結構2〇1與透鏡結構2〇2及2〇4 統稱為樹醋層304，樹醋層綱為一光硬化材料。此棱柱結 構201並非本發明之重點，於此不加贅述。 此透鏡結構202是均勻地一體成型於稜鏡結構2〇1的表 面上，每個透鏡結構202是自稜柱結構2〇1底部向上成行， 且局度與紐不等，為避免透鏡結構加的體積過大，降低 了整體縣觀卿度降伽及树賴財造成亮點或暗 〇 點’透鏡結構202的大小必須加以限制，在本實施例中透鏡 結構202的高度不得高於稜柱結構高度2〇1的三分之二。 頂部的透鏡結構204則是不均勻的使稜柱結構2〇1地頂 角呈不規則的凹陷，為避免透鏡結構2〇4的凹陷過大，降低 了整體背光模組卿度降似及在縣模財造成亮點或暗 點’透鏡結構204的凹陷大小必須加以限制，在本實施例中 it鏡結構204的凹陷程度不得大於稜柱結構高度2〇1的三分 ϋ 之一。 接下來請參關六麵七，以酬本實施例製造方法之 較佳實施例。 如圖六所示’此擴散聚光膜的製造方式包含光硬化成型 與壓印製程；請同時參閱圖四'圖六與圖七，此製程是利用 —塗佈裝置501將光映化樹脂塗佈在基板2〇3表面，再利用 表面有稜柱結構的押花滚輪502滾過同時，立即以紫外光 201100870 503照射使其固化’得到一帶有稜柱結構2〇5的增亮膜402， 接下來此增亮膜402的稜鏡面再以一表面具有凸透鏡結構 之滾輪506滾壓，得到一在稜鏡結構的峰頂帶有凹陷結構 303的膜片403。 接下來在膜片403上經由塗佈裝置5〇1將光映化樹脂塗 佈在結構面303，貼上一基板203後經由一鏡面金屬滾輪5〇4 壓合，同時以紫外光503照射使其固化，經剝離後即可得到 〇 一稜柱結構201的底部具有類透鏡弧狀結構202的擴散增亮 膜片404，此擴散增亮膜片404的結構面301再經過一次— 表面具有凸透鏡結構之滚輪506滚壓，即得到一在稜鏡峰頂 帶有凹陷結構204而底部有凸狀結構2〇2的稜鏡結構3〇4， 此稜鏡結構304與板材203則構成了擴散增亮膜片4〇5。 綜上所述，背光模組之光源光線係由206面進入擴散增 亮膜片，通過稜柱結構2〇1的光線，可將光線之正向亮度提 〇 升，而通過類透鏡弧型結構202與204的光線，則可將光線 作均勻的擴散’所喊具了輝度提高的功能外並且能避免背 光模組堆㈣產生的光學齡現象，並且就算升產或組裝時 局部刮傷也能因透鏡結構202與綱形成的擴散效果而達到 遮瑕的目的。 本發明之概増亮則肢製造錢，係紐結構_ 於稜鏡結構表面’此倾習知_散增細藉祕加擴散粒 11 201100870 乂德㈣/特徵。再者，峰不需要習知藉由機械加工 在稜鏡輪上，因此不但簡化了製程的複雜度，並降低製 程設備之成本，但仍可得到與習知技術相同的光學效果。另 外’以膜轉膜複製的方式來生產，其良率將會比習知技術 南，且利用模轉膜成型的方式在成本上降低許多。 以上所述僅為舉例性，而非為限制性者。任何未脫離本 發明之精神與鱗，㈣其進行之等效修改或變更均應包 〇 含於後附之申請專利範圍中。 【圖式簡單說明】 圖-係習知之-種背光模組及其光學膜片組之示意圖。 圖二之—係為依據本發明第-實施例之—種擴散增亮膜片的 結構側視圖。 圖-之-係為依據本發明第—實施例之―種擴散增亮膜片的 Q 結構上視圖。 圖-之—係為依據本發明第—實施例之—種擴散增亮膜片的 結構斜視圖。 圖二係為-示意圖’顯示依據本發明第一實施例之一種擴散 增亮膜片的製造過程及設備配置。 ’、 圖四之-〜圖四之三係為—示意圖，顯示依據本發明第一實施 例之種擴散増亮膜片的製造過程。 12 201100870 圖五係為依據本發明第二實施例之一種擴散增亮膜片的結構 側視圖。 圖五之一係為依據本發明第二實施例之一種擴散增亮膜片的 結構斜視圖。 圖六係為一示意圖，顯示依據本發明第二實施例之一種擴散 增亮膜片的製造過程及設備配置。 圖七之一〜圖七之三係為一示意圖，顯示依據本發明第二實施 〇 例之一種擴散增亮膜片的製造過程。 【主要元件符號說明】 101 :光源 102 :導光板 111 :下擴散片 112 ;第一稜鏡膜片 113 :第二稜鏡膜片 114 :上擴散片 103 :背光模組膜片總成 201 :稜柱結構 202 :類透鏡弧狀結構 203 :基板 13 201100870 204 :類透鏡弧狀結構 205 ··第一表面 206 :第二表面 301〜304 :稜柱結構與類透鏡弧狀結構總成 402 :棱柱結構與基板總成 403405 :稜柱結構與類透鏡弧狀結構加上基板總成，即為擴 散增亮膜片 〇 501 :塗佈機構 502 :押花滚輪 503 :紫外線燈 504 :鏡面滚輪 506 :凸面結構滾輪 14201100870 VI. Description of the Invention: [Technical Field to Be Invented] The present invention is directed to an optical type. In particular, the present invention relates to a lens having a lens-like recording structure and a method of manufacturing the optical film. [Prior Art] The backlight module is one of the important components of the liquid crystal display device because the liquid crystal Ο 面板 panel itself does not emit light. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Referring to FIG. 1, a conventional backlight module includes a light source lm, a light guide plate 102, and an optical film group 1〇3. The backlight module is an edge-type backlight module. The wire 1G1 can be a light-emitting diode of the cold cathode fluorescent lamp. The optical film group 103 includes a lower diffusion film m, a -th diaphragm film 112, a second diaphragm sheet 113, and an upper diffusion film (four). The first prism film 112, the second prism film only m·α, the film 113 and the upper layer 114 are sequentially stacked on the lower diffusion film 115. The wind eliminator μ λ is provided on the light guide plate 102. The light of the light source ι01 (not shown) is incident on the light guide plate, and the light is destroyed by the mesh or structure of the bottom surface of the light guide plate 1〇2. After the reflection, the optical film group 1〇3 is further injected, and the light of the source 101 is initially diffused through the lower diffusion film 111, and then increased by the field film 112 film 112 and the second edge 3 201100870 mirror film 113. The brightness of the forward light is emitted, and finally the light is slightly diffused by the upper diffusion film 114. In addition to slightly diffusing the light, the upper diffusion film 114 can prevent the user from directly seeing the bright lines on the enamel film, and has the function of protecting the second prism film 113, and shielding the two prisms from overlapping. Interference phenomena generated by each other. It is known in the art that two sheets of tantalum diaphragms are stacked one on another at 9 degrees to increase the amount of light on the shaft. However, the optical display using this stacking method will visually see an image such as a wet image due to the optical coupling phenomenon caused by the contact of the surfaces of two adjacent diaphragms. A specific embodiment of this improvement is described in U.S. Patent No. 5,777,328. In addition, the peaks staggered on the sides of the respective elements are usually sharp. This makes it possible to maximize the luminous flux on the shaft leaving the backlight, but it is also easy to scratch the 稜鏡 structure, so that the optical film can be fabricated. It must be protected by 0 protective film and removed when the backlight module is assembled on the production line. In order to increase the scratch resistance improvement of the crucible, the crucible structure can be changed from a sharp corner to an obtuse angle at the tip end. A specific embodiment of the improvement of this phenomenon is described in the Republic of China Patent Application No. 093136005. Another solution is to apply a layer of atomized layer with a diffusion effect on the second surface of the substrate of the second cymbal 113, whereby the atomization layer is between the first and second The phenomenon of wetting and the possible scratches between the two prisms 4 201100870 The problem is avoided. The specific implementation of this improvement is described in U.S. Patents 5,598,280, 5,995,288, and 6,825,984. In addition, there is a --transition mode whereby the diffusion effect is achieved by the top dot-like projections of the prismatic structure. A specific embodiment of the improvement of this phenomenon is described in the Patent Application No. 96327728 of the Republic of China. However, the number of diaphragms of the optical film group 1〇3 in the entire backlight module is large, which will increase the production cost of the backlight module i, and the current methods of knowing each other will cause the silk to be produced. The increase in cost and order. Therefore, "how to provide an optical film" can simplify the structure of the backlight module 1, reduce the production cost, and can have all the functions of the upper diffusion film 114, which is one of the current important topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a diffused brightness enhancement film 0 having an original arc surface having an irregular spherical lens on the surface of the crucible. In order to achieve the above object, a diffusion enhancing film according to the present invention comprises a substrate and a prism structure. The substrate has a first surface and a second surface. The first surface is disposed opposite to the second surface. The prism structure is disposed on the surface of the prism. The surface of the prism has an irregular lens-like arc structure. According to the invention, a diffusion-enhancing film according to the present invention has an irregularly arranged lens-like arc-like structure on the surface of the prism structure, and the conventional technology phase 5 201100870 Under the premise of brightness performance, it can avoid the optical lightness phenomenon caused by the combination of two optical films, and it can have the effect of concealing due to the scratching effect of S in the production or assembly process, and then reduce the V# optical module. The number of the middle cymbals used to reduce the production cost of the prism sheet and the assembly cost of the backlight module. SUMMARY OF THE INVENTION The object of the present invention is to provide a method of producing a molded release film. The manufacturing method of the diffusion increase of the present invention is a conventional brightening film, which is pressed by a roller having an irregular convex structure on the surface to obtain a surface prism structure which is irregular. After the mother film of the concave lens structure, the mother lining is made into a diaphragm with a spherical lens of irregular shape by means of a lion, and the production advantage of the film transfer film is that the demand for the mold can be reduced. In turn, the production cost is reduced. [Embodiment] Hereinafter, a diffusion-enhancing film according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. The first embodiment of the present invention, as shown in FIG. 2, a diffusing brightness enhancement film according to a first embodiment of the present invention comprises a substrate 203 and a resin layer 301, wherein the structure of the resin layer 301 is a columnar crucible 201. It is composed of an irregular lens-like arc structure 202. 6 201100870 Figure 2 bis is a top view of the diffusion-enhancing film resin layer 301. The relative relationship between the prism structure 201 and the irregular lens and the structure 2〇2 can be clearly illustrated, and the second figure is diffused for this purpose. A perspective view of the brightness enhancing film, it is apparent that the lens structure 202 is present at the bottom of the prism structure 2〇丨. In this embodiment, the substrate 203 has a first surface 205 disposed oppositely and a second surface 205'. The first surface 205 is disposed opposite the second surface 〇6. The material of the substrate 203 may be polyethylene terephthalate (PET), polycarbonate (PC), poly Vinyl chloride, or cyclic olefm. Copolymer, COC), metallocene-based cyclic olefin copolymer (mCOC), or a mixture thereof. The thickness of the substrate 203 is about 12; ^m to 5 〇〇 / / m. In this embodiment, the substrate 203 is exemplified by polyethylene terephthalate (PET) having a thickness of 125. The first surface 205 of the crucible has a prismatic structure 201, and the surface of the prismatic structure 201 has a lens arc structure of irregular arrangement, and the prism structure 201 and the lens structure 202 are collectively referred to as a resin layer 3〇1. The resin layer 301 is a photohardenable material. This prism structure 201 is not the focus of the present invention and will not be described herein. The lens structure 202 is integrally formed on the surface of the 稜鏡 structure 2〇1, and each lens structure 202 is lined up from the bottom of the prism structure 201, and the height 7 201100870 is different from the density, in order to avoid the volume of the lens arc structure 202. If the brightness of the overall backlight module is reduced and the bright or dark spots are caused in the backlight module, the size of the lens-like arc structure 202 must be limited. In this embodiment, the height of the lens-like arc structure 202 is not high. Two-thirds of the prism structure 2〇1. Next, please refer to FIG. 3 and FIG. 4 to illustrate a preferred embodiment of the manufacturing method of the embodiment. 〇 As shown in Figure 3, 'this diffusion concentrating film is manufactured by photohardening and imprinting process; please refer to Fig. 3 and Fig. 4 to Fig. 4'. This process uses a coating device 501 to light The hardened resin is coated on the surface of the substrate 203, and then rolled by the embossing roller 5〇2 having a 稜鏡 structure on the surface, and immediately cured by ultraviolet light 503 to obtain a brightness enhancement film 402 having a prismatic structure 201. Next, the prism surface of the brightness enhancing film 402 is rolled by a roller 506 having a convex lens structure on the surface to obtain a film 403 having a concave structure 303 on the peak top of the 稜鏡G structure. Next, the photo-image resin is applied onto the film 403 via the coating device 501 on the structural surface 303' after being pasted on the substrate 203, and then pressed by a mirror metal roller 504 while being cured by ultraviolet light 503, and peeled off. A diffusion enhancing film 404 having a lens structure 202 at the bottom of a prismatic structure 201 is obtained. Second Embodiment 8 201100870 Referring to FIG. 5 and FIG. 5 bis, a diffusion brightness enhancing film according to a second embodiment of the present invention comprises a substrate 203 and a resin layer 3〇4, wherein the tree layer a layer The structure of 304 is composed of a prism structure 2〇1, a lens-like arc structure 202 at the bottom of the prism, and a lens structure 2〇4 at the top of the prism. Figure 5 bis is a perspective view of the diffusion enhancing film. It can be clearly seen that the lens-like arc structure 202 exists at the bottom of the prism structure 2〇1, and the lens-like arc structure 204 exists in the prism structure 201. The top position, in which the structure of the tree vinegar layer 3〇4 Ο is composed of the columnar crucible 201 and the irregular lens-like arc structures 2〇2 and 204. In this embodiment, the substrate 203 has a first surface 205 and a second surface 206 disposed oppositely, and the first surface 205 is disposed opposite to the second surface 2〇6. The material of the substrate 203 may be polyethylene terephthalate (PET), polycarbonate (polycarb〇nate, PC), polyvinyl chloride (P〇ly Vinyl Chloride), cycloolefin. (cyclic 〇 olefin 〇 〇 〇 y y y y y 、 、 、 、 、 metal metal 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The thickness of the substrate 203 is about 12 to 5 〇〇 #m. In the present embodiment, the substrate 203 is exemplified by polyethylene terephthalate (PET) having a thickness of 125/m. The first surface 205 has a prismatic structure 2〇1. At the bottom of the prismatic structure 2〇1, there is an irregular lens structure 202, and the top of the prism structure also has an irregular lens structure 204 of 201100870. The 稜鏡 structure 2〇1 and the lens structures 2〇2 and 2〇4 are collectively referred to as a tree vine layer 304, and the tree vine layer is a photohardenable material. This prism structure 201 is not the focus of the present invention and will not be further described herein. The lens structure 202 is uniformly integrally formed on the surface of the 稜鏡 structure 2〇1, and each lens structure 202 is lined up from the bottom of the prism structure 2〇1, and the degree is different from that of the ridge, in order to avoid the addition of the lens structure. If the volume is too large, the overall county level is reduced, and the size of the lens structure 202 must be limited. In this embodiment, the height of the lens structure 202 must not be higher than the height of the prism structure. Two-thirds of one. The top lens structure 204 is non-uniform, so that the apex angle of the prism structure 2〇1 is irregularly concave. To avoid the large depression of the lens structure 2〇4, the overall backlight module is reduced in brightness and is reduced in the county model. The size of the recess of the lens structure 204 must be limited. In this embodiment, the degree of depression of the mirror structure 204 must not be greater than one of the three points of the prism structure height of 2〇1. Next, please refer to the six-seventh embodiment for a preferred embodiment of the manufacturing method of the embodiment. As shown in Fig. 6, the manufacturing method of the diffusion concentrating film includes a photo-curing molding process and an imprinting process; please refer to FIG. 4 'Fig. 6 and FIG. 7 at the same time, the process is to coat the photo-image resin with the coating device 501. The cloth is placed on the surface of the substrate 2〇3, and then rolled by the embossing roller 502 having a prismatic structure, and immediately irradiated with ultraviolet light 201100870 503 to cure it to obtain a brightness enhancement film 402 having a prismatic structure 2〇5, and then The face of the brightness enhancing film 402 is then rolled by a roller 506 having a convex lens structure on the surface to obtain a film 403 having a concave structure 303 at the peak of the 稜鏡 structure. Next, the photo-image resin is applied onto the structural surface 303 via the coating device 5〇1 on the film 403, and a substrate 203 is attached thereto, and then pressed by a mirror metal roller 5〇4 while being irradiated with ultraviolet light 503. After being cured, a diffusion-enhancing film 404 having a lens-like arc-like structure 202 at the bottom of the prismatic prism structure 201 is obtained, and the structural surface 301 of the diffusion-enhancing film 404 is again passed through once - the surface has a convex lens structure. The roller 506 is rolled to obtain a 稜鏡 structure 3〇4 having a concave structure 204 at the top of the peak and a convex structure 2〇2 at the bottom. The raft structure 304 and the plate 203 constitute a diffusion brightening. The diaphragm 4〇5. In summary, the light source of the backlight module enters the diffusion enhancing film from the 206 surface, and the light of the prism structure 2〇1 can enhance the forward brightness of the light, and pass through the lens-like arc structure 202. With the light of 204, the light can be uniformly diffused, and the function of improving the brightness is eliminated, and the optical age phenomenon generated by the backlight module stack (4) can be avoided, and even if the partial scratch is caused during the production or assembly, The lens structure 202 and the diffusion effect of the formation form the purpose of concealing. The general outline of the present invention is that the limbs are made of money, and the structure of the structure is _ 稜鏡 稜鏡 稜鏡 ’ 此 此 此 此 此 此 此 此 此 此 _ 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 Moreover, the peak does not need to be mechanically machined on the wheel, thereby simplifying the complexity of the process and reducing the cost of the process equipment, but still obtaining the same optical effects as conventional techniques. In addition, it is produced by means of film transfer film replication, and its yield will be much lower than that of the prior art, and the cost of mold transfer film formation is much lower. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations made without departing from the spirit and scope of the invention are intended to be included in the scope of the appended claims. [Simple description of the diagram] Figure - is a schematic diagram of a conventional backlight module and its optical film set. Figure 2 is a side view showing the structure of a diffusion enhancing film according to the first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 4 is a top view of a Q structure of a diffusion enhancing film according to a first embodiment of the present invention. Fig. - is a perspective view showing the structure of a diffusion enhancing film according to the first embodiment of the present invention. Figure 2 is a schematic view showing the manufacturing process and equipment configuration of a diffusion enhancing film according to the first embodiment of the present invention. </ RTI> Figure 4 - Figure 4 is a schematic diagram showing the manufacturing process of a diffusing bright film according to the first embodiment of the present invention. 12 201100870 Figure 5 is a side view showing the structure of a diffusion enhancing film according to a second embodiment of the present invention. Figure 5 is a perspective view showing the structure of a diffusion enhancing film according to a second embodiment of the present invention. Figure 6 is a schematic view showing the manufacturing process and equipment configuration of a diffusion enhancing film according to a second embodiment of the present invention. Figure 7 is a schematic view showing the manufacturing process of a diffusion enhancing film according to a second embodiment of the present invention. [Main component symbol description] 101: Light source 102: Light guide plate 111: Lower diffusion sheet 112; First diaphragm 113: Second diaphragm 114: Upper diffusion sheet 103: Backlight module diaphragm assembly 201: Prism structure 202: lens-like arc structure 203: substrate 13 201100870 204: lens-like arc structure 205 · first surface 206: second surface 301 to 304: prism structure and lens-like arc structure assembly 402: prism structure And substrate assembly 403405: prism structure and lens-like arc structure plus substrate assembly, that is, diffusion brightness enhancement film 〇501: coating mechanism 502: embossing roller 503: ultraviolet lamp 504: mirror roller 506: convex structure roller 14