M366080 五、新型說明： 【新型所屬之技術領域】 本創作係涉及光學膜片之改良，特別是一種應用背光 模組中，可達到羌線集中且輝度增加之光學膜片及淇製造 方法。 -【先前技術】 . 針對多媒體社會之急速進步，多半受惠於半導體元件 Φ 或人機顯示裝置的飛躍性進步，就顯示器而言，陰極射線 管（Cathode Ray Tube，簡稱CRT)因具有優異的顯示品質與 其經濟性，一直獨占近年來的顯示器市場。然而，對於個 人在桌上操作多數終端機/顯示器裝置的環境，或是以環保 的觀點切入，若以節省能源的潮流加以預測，陰極射線管 因空間利用以及能源消耗上仍存在很多問題，而對於輕、 薄、短、小以及低消耗功率的需求，無法有效提供解決之。 因此，具有高晝質、空間利用率佳、低消耗功率、無輻射 專優越性之液晶顯不斋以逐漸成為市場之主流’值得注意 的是，由於液晶顯不裔中的液晶面板本身並不會發光，故 必須猎由背光核組提供液晶面板所需之面光源’使得液晶 面板達到顯示的效果，同時獲得足夠之亮度與對比。 而一般背光模組主要包含有光源以及複數光學膜片， 光源得以通過各光學膜片得到較為均勻且亮度較高之光線 後，再由液晶面板射出；其中，為節省光學膜片之使用及 降低背光模組之厚度，出現有一具增光及擴散功能之光學 M366080 膜片，如台灣發明專利公開號第20072071 1號，專利名稱「用 於背光單元之光擴散片及其製造」，如第一圖所示，該光擴 散片1設有一透明基板11，該透明基板11上有複數隨機不規 則分佈之半球狀結'構12，以、達到光源擴散及增光之雙’重效 果。 如第二圖所示即為該光擴散片1應用於側光式背光模 組之結構示意圖，該背光模組2係設有導光板21及光源22， 而該光擴散片1則設於該導光板21上方，該光源22之光線係 經由導光板21射入上方之光擴散片1，光線先進行擴散後再 進入各半球狀結構12，雖然光線藉由各半球狀結構12可達 到增光之效果，但由透明基板11形成大角度之光線進入半 球狀結構12時，該半球狀結構12之弧面會使光線折射角度 增加，進而使得整體光線折射角度較大，而無法達到有效 將光線集中且提高輝度之效果。 【新型内容】 本創作係提供一種應用背光模組中，可達到光線集中 且輝度增加之光學膜片及其製造方法。 為達上述目的，本創作之光學膜片係設有擴散層及增 光層，其中該光學膜片底側係設有複數間隔排列之反射 區5而各反射區之間係設有透光孔’該光學膜片應用於背 光模組中時，部分光線經由透光孔直接射出，並由上方擴 散層及增光層射出，可達到光線集中且輝度增加之效果。 【實施方式】 M366080 為能使貴審查委員清楚本創作之結構組成，以及整 體運作方式，茲配合圖式說明如下： 本創作「光學膜片及其製造方法及所應用之背光模 組」，如第三圖所示，該’光學、膜片3係設有擴散層31及增光 層32’其中該光學膜片3底側係設有複數間隔排列之反射區 33，而各反射區33之間係設有透光孔34，如圖所示之貫鈀 -例中，該增光層32係設於該擴散層31上方，而該擴散層31 ,則設於各反射區33上方，且該增光層32係設有複數突出表 H 面之微結構321 (可以為微透鏡或稜鏡結構），該反射區係以 一基材為主體（圖中未標示），而該基材内係設有反射材或 者該基材上則設置有反射材，其中設置於該基材内之反射 材可以為白色反射粒子（例如二氧化鈦或硫酸鋇），而設置 於該基材外之反射材可以為銀。 其中’該透光孔34之位置大致落在相對於該微結構321 之突起位置Μ處，請同時參閱第四圖所示，且該透光孔34 之寬度W1約為1/2〜1/4微結構之寬度W2。 • 而本創作之光學膜片3應用於背光模組中時’如第五圖 所示’該背光模組係設有導光板41、光源42、反射片43以 及本創作之光學膜片3，該導光板41係設有一入光面411、 一與該入光面411相交之底面412、一與該底面412相對之出 光面413 ’該光源42係設於該導光板41之入光面411 ’該反 射片43係設於該導光板之底面412下方，而該光學膜片3係 設於该導光板出光面413之上方，。 當光源42之光線透過導光板41朝出光面射出並進入光 學膜片3時’部分大角度之光線Ρ1會被反射區33反射至導光 M366080 板41再進行一次折射作用，而部份小角度之光線P2會直接 穿過透光孔34，朝上方之擴散層31及增光層32射入，進行 後續擴散及增光之作用，且該透光孔34之位置大致落在相 ' 對於該微結構321之突起位置Μ處，故該小角度之光線P2經 由該微結構321之弧面射出時，其折射角度較小，而使整體 光線射出之角度較小，進而達到光線集中且輝度增加之效 果；當然該導光板底面412可進一步設有複數網點414，如 第六圖所示。 如上所述，本創作提供背光模組一較佳可行之先學膜 片及其製造方法，爰依法提呈新型專利之申請；惟，以上 之實施說明及圖式所示，係本創作較佳實施例者，並非以 此侷限本創作，是以，舉凡與本創作之構造、裝置、特徵 等近似、雷同者，均應屬本創作之創設目的及申請專利範 圍之内。 【圖式簡單說明】 第一圖係為習用具增光及擴散功能之光學膜片結構示 意圖。 第二圖係為習用光擴散片應用於侧光式背光模組之結 構示意。 第三圖係為本創作中光學膜片之結構示意圖。 第四圖係為本創作中光學膜片之放大示意圖。 第五圖係為本創作中光學膜片應用於背光模組之結構 示意圖。 第六圖係為本創作中光學膜片應用於背光模組之另一M366080 V. New description: [New technical field] This creation relates to the improvement of optical film, especially in an application of backlight module, which can achieve the concentration of the ray and increase the brightness of the optical film and the method of manufacturing the yoke. - [Prior Art] . For the rapid advancement of the multimedia society, most of them benefit from the dramatic advancement of semiconductor components Φ or human-machine display devices. In terms of displays, cathode ray tubes (CRTs) are excellent. Display quality and its economy have always dominated the display market in recent years. However, for the environment in which most individuals operate the terminal/display device on the table, or from the perspective of environmental protection, if the energy saving trend is predicted, the cathode ray tube still has many problems due to space utilization and energy consumption. The need for light, thin, short, small, and low power consumption cannot be effectively addressed. Therefore, the liquid crystal display with high enamel quality, good space utilization, low power consumption, and no radiation speciality has gradually become the mainstream of the market. It is worth noting that the liquid crystal panel itself in the liquid crystal display is not It will illuminate, so it is necessary to hunt the surface light source required by the backlight core group to provide the liquid crystal panel to make the liquid crystal panel achieve the display effect, and at the same time obtain sufficient brightness and contrast. The general backlight module mainly comprises a light source and a plurality of optical films, and the light source can obtain a relatively uniform and high-intensity light through the optical film, and then is emitted by the liquid crystal panel; wherein, in order to save the use of the optical film and reduce The thickness of the backlight module is such that there is an optical M366080 diaphragm with a function of enhancing and diffusing, such as Taiwan Patent Publication No. 20072071 No. 1, the patent name "Light diffusing sheet for backlight unit and its manufacture", as shown in the first figure. As shown, the light diffusing sheet 1 is provided with a transparent substrate 11 having a plurality of randomly irregularly distributed hemispherical structures 12 to achieve a double 'weight effect of light source diffusion and brightness enhancement. As shown in the second figure, the light diffusing film 1 is applied to the edge light type backlight module. The backlight module 2 is provided with a light guide plate 21 and a light source 22, and the light diffusing film 1 is disposed on the light diffusing film 1 Above the light guide plate 21, the light of the light source 22 is incident on the upper light diffusion sheet 1 through the light guide plate 21, and the light is first diffused and then enters each hemispherical structure 12, although the light can be enhanced by the respective hemispherical structures 12. The effect, but when the transparent substrate 11 forms a large angle of light into the hemispherical structure 12, the arcuate surface of the hemispherical structure 12 increases the angle of refraction of the light, thereby making the overall light refraction angle larger, and can not effectively achieve the concentration of light. And improve the effect of brightness. [New content] This creation provides an optical film that can achieve concentrated light and increased brightness in an application backlight module and a method of manufacturing the same. In order to achieve the above object, the optical film of the present invention is provided with a diffusion layer and a light-increasing layer, wherein the bottom side of the optical film is provided with a plurality of reflective regions 5 arranged at intervals and a light-transmissive hole is formed between the reflective regions. When the optical film is applied to the backlight module, part of the light is directly emitted through the light transmission hole, and is emitted by the upper diffusion layer and the light enhancement layer, thereby achieving the effect of concentrated light and increased brightness. [Embodiment] M366080 is to enable your review committee to understand the structure of the creation and the overall operation mode. The following is a description of the following: "The optical film and its manufacturing method and the applied backlight module", such as As shown in the third figure, the 'optical film 3 is provided with a diffusion layer 31 and a light-increasing layer 32'. The bottom side of the optical film 3 is provided with a plurality of reflective regions 33 arranged at intervals, and between the reflective regions 33. The light-transmitting hole 34 is provided, as shown in the example of the palladium. In the example, the light-increasing layer 32 is disposed above the diffusion layer 31, and the diffusion layer 31 is disposed above each of the reflective regions 33, and the light is added. The layer 32 is provided with a microstructure 321 (which may be a microlens or a 稜鏡 structure) of a plurality of protrusions H surface, the reflection area is mainly composed of a substrate (not shown), and the substrate is provided with The reflective material or the substrate is provided with a reflective material, wherein the reflective material disposed in the substrate may be white reflective particles (for example, titanium dioxide or barium sulfate), and the reflective material disposed outside the substrate may be silver. Wherein the position of the light-transmitting hole 34 substantially falls at a position relative to the protrusion 321 of the microstructure 321 , please refer to the fourth figure at the same time, and the width W1 of the light-transmissive hole 34 is about 1/2~1/ 4 The width of the microstructure is W2. • When the optical film 3 of the present invention is applied to a backlight module, as shown in FIG. 5, the backlight module is provided with a light guide plate 41, a light source 42, a reflection sheet 43, and an optical film 3 of the present invention. The light guide plate 41 is provided with a light incident surface 411, a bottom surface 412 intersecting the light incident surface 411, and a light exit surface 413 opposite to the bottom surface 412. The light source 42 is disposed on the light incident surface 411 of the light guide plate 41. The reflection sheet 43 is disposed below the bottom surface 412 of the light guide plate, and the optical film 3 is disposed above the light guide surface 413 of the light guide plate. When the light of the light source 42 is emitted through the light guide plate 41 toward the light exit surface and enters the optical film 3, a part of the large angle light ray 1 is reflected by the reflection area 33 to the light guide M366080 plate 41 to perform a refraction, and a part of the small angle The light P2 passes directly through the light transmission hole 34, and the diffusion layer 31 and the light enhancement layer 32 are incident thereon for subsequent diffusion and light enhancement, and the position of the light transmission hole 34 substantially falls on the phase 'for the microstructure When the light ray P2 of the small angle is emitted through the arc surface of the microstructure 321 , the angle of refraction is small, and the angle at which the whole light is emitted is small, thereby achieving the effect of concentrated light and increased brightness. Of course, the light guide plate bottom surface 412 can be further provided with a plurality of dots 414, as shown in the sixth figure. As described above, the present invention provides a preferred and feasible method for manufacturing a backlight module and a method for manufacturing the same, and submitting a new patent application according to law; however, the above implementation description and the drawings show that the creation is better. The embodiments are not limited to this creation. Therefore, any similarity and similarity to the structure, installation, and features of the creation should be within the creation purpose and patent application scope of the creation. [Simple description of the drawings] The first figure is a schematic diagram of the optical diaphragm structure of the lightening and diffusion function of the appliance. The second figure shows the structure of a conventional light diffusing film applied to an edge-lit backlight module. The third picture is a schematic diagram of the structure of the optical film in the creation. The fourth picture is an enlarged schematic view of the optical film in this creation. The fifth figure is a schematic diagram of the structure of the optical film applied to the backlight module in the present creation. The sixth picture is the other application of the optical film in the backlight module.