200903034 九、發明說明： 【發明所屬之技術領域】 t本發明係有關一種光學膜片之結構及其製造方法， 旨在提供一種具有高亮度水準之光學膜片。 / 【先前技術】 按，一般應用在資訊裝置的液晶顯示器，係 際設：之需求：而選擇利用直下式或者是側光式: 用光模組架構；如第一圖所示，俜為一 示钧奴液晶顯不器所 -直下式背光模組結構剖視圖，整體背光模組40之 結構組成係由内向外依序配設有一背板41、若干光源 42、擴散板43以及顯示面板44 ;其中，各光源42可為 直條狀或U型或其他連續折彎形狀之燈管並以適當之間 距舖設在背板41與擴散板43之間，並固定於背板^上曰， 其液晶模組之顯示效果即由各光源42散出之光線所構 成。 ^其中，整體背光模組40為達到亮度提升之效果，通 常會進一步在擴散板43與顯示面板44之間加設有至少 二張擴散膜片47(Diffusi〇n Film)、至少一張增光膜片 (Brightness Enhancement Film，俗稱：BEF)45 及反射 偏光片（Dual Brightness Enhancement Film，俗稱 DBEF)46搭配使用，其中之擴散膜片除了可以讓擴散板的 擴散更均勻之外，對背光模組整體的輝度，亦有提升的 效，。然而，目前增光膜片45的來源幾乎都由3M公司 所莩握，雖然台灣顯示器產業蓮勃發展，但顯示器產業 200903034 ϊ 蹲長期受限於外商’導致利潤低落。此外， 月吴、、且木構若使用之光學膜片數多，相 組的光學效率降低、組裝良率受限以及厚度增加等缺點。 【發明内容】 之光二主要目的即在提供一種具有高亮度水準 =光=片。為達上揭目的’主要係在光學膜片入光面之 表面建構複數由反射材微結構所區隔㈣穿射區，宜中各 反射材微結構係設有溝槽，以及在溝槽的區域批覆有反光 材料。 據以，來自光源當中的大角度入射光即被反射材微結 構加以反射阻擒，僅能夠讓光源當中的小角度入射光經由 反射材微結構以外的區域射入光學膜片。由於只有小角度 入射光能穿透光學膜片，而Α角度人射光則被反射並進行 再利用，因此能使光線能集中在較狹窄的視角範圍，而使 党度提南。 具體而言，本發明係具有下列功效： 1. 本發明之光學膜片可應用於背光模組’使整體背 光模組得以達到高亮度的表現水準。 2. 本發明之光學膜片由於具備高亮度的特性，因此 可以取代增光膜片及並減少擴散膜片的使用，進而可以有 效地縮減背光模組之厚度。 【實施方式】 200903034 而媒=之特點’可參閱本案圖式及實施例之詳細說明 而獲得清楚地瞭解。 之此月〗學膜片及其製造方法以及應用該光學膜片 A二曰在提供—種具有高亮度水準之光學膜片及 膜片in 射材微結構；如第二圖（A)所示，整體光學 Μ # $ 入光面A1及出光面A2 ,主要係在其入光面 表面建構魏由反射材微結構12所區隔的光穿射區 A1 ^反射材微結構12係在光學膜片1G的入光面 变右\ rf"v型溝槽121，以及在v型溝槽121的區域批 其中若光穿射區11之寬度為L如第 為:或Η，Τ 型溝槽121深入光學膜片1G之深度 二/ , ’，'Η4Η’係大於1;當，然，該溝槽亦可以 為〃他形狀的溝槽，例如：U型溝槽。 另外，反光材料122可以為銀、在呂、三氧化二紹、二 亀屬或合金塗料，並且可以；第三； ' ,(β)所不，其製造方法為··提供一光學膜片 ’亚於該光學W1G表面形成有複數 :光，片1G部份區域遮蓋，而部份區域 ^用遮盍換板20覆蓋在光學膜片1〇的 20係設有與¥型溝槽121 :遮瓜杈板 2〇的遮蔽作用下，使光學膜/二=2卜在遮蓋模板 露出區域，其餘則為遮蓋區;121的 俾在進行反光材料的塗佈作” ：置反光材料， 料控制在ν细可响_反光材 200903034 -其反光材微結才冓121中的&光材料係可以如第五圖 所不批覆在v型溝槽⑵表面，或是如第六圖所示，將v 型溝槽121填滿’其作用主要是讓該批覆反光材料122 的部位具有光反射效果。 如第五圖及第七圖所示，在反射材微結構12的作用 I來自光源30虽中的大角度入射光即被反射材微結構 2加以反射阻#，僅能夠讓光源3〇 #中的小角度入射光 經由反射材微結構以外的區域射人光學膜# 1()，並且由 f反射材微結構12V型溝槽121之間的區塊做為入射光的 ¥光路t 7所有光源3〇射人光學膜片的光線能夠有 效集中於光學膜片1G中建構有«射區11的區域射出。 由於只有小角度人射光能穿透光學膜4 1G，而絕大部分 度人射光職反射並進行再，因此能使光線能 木中在較狹窄的視角H圍，而使亮度提高。 楚再者丄光學膜片1〇之光穿射區11的入光面係可以為 f五圖、第七圖所示的平面狀，或是如第六圖所示的凸面 ^ =凸面狀的光穿射區11具有聚光效果，可使亮度 °而且，不論光穿射區11的人光面係為平面狀 H面狀’如第八圖及第九圖所示’其間的反射材微結構 田的V型溝槽⑵的深度可依據光線所欲集中的視 耗圍而進仃調整。例如，當光線所欲集中的視角範圍 乂狹_乍哙，可將v型溝槽12丨的深度加深，如第十二 °斤示而虽光線所欲集中的視角範圍g，變得較寬 時’可將v型溝槽121的深度變淺，如第十二圖⑻所示見 200903034 了控制視角範圍大小’其光穿射區11上由相鄰 - V型溝槽121所形成之擴張角度0係介於1G度至6〇 ί之間。此外’ V型溝槽121與光學㈣1()表面之間且 有:特定高度的垂直延㈣123，藉以控制導光路徑的作 :靶圍，達到令所有光源30射入光學膜片10的光線能夠 有效集中於光學膜諸建構有光穿射區丨丨區域射出之目 的。 、當然，反光材料122可以選擇性的將v型溝槽的部位 填滿’或是將7型溝槽及垂直延伸㈣部位填滿，抑或是 如第八圖及第九圖所示’批覆在v型溝槽及垂直延伸壁表 面。 藉，上述使用反射材微結構所建構而成的光學膜 片’可實際應用於背光模組，士σ第十圖所示，即為本發明 之光學膜#應祕直下式背光模組之結構示意圖，該光學 膜片10係設於複數光源30上方，而光學膜片1〇上方可 設置顯示面板5卜並使各光源3〇分別設於正對光穿射區 11之下方，另外，如第十一圖所示，為本發明之光學膜 片應用於側光式背光模組之結構示意圖，該側光式背光模 組至少包括有：顯示面板51、光學膜片1〇、導光板52 以及複數光源30，該光學膜片10之入光面A1表面同樣 建構複數由反射材微結構12所區隔的光穿射區n，該導 光板52係設於光學膜片10下方，並相對該光學膜片<1〇 入光面A1之一側，而顯示面板51則設於光學膜片丨〇上 方相對於出光面A2之一側，各光源30則於導光板52側 200903034 邊形成入光，使光源30所發出之經由導光板犯上 光’再由光學膜片入光面AW成入光，光線再向上進入 顯示面板51達到顯示效果。 而不論該光學膜片1G應用於直下式或側光 組中，該光學膜h光面所設置相㈣隔之反射材微姓構 以及先穿射區，可將來自光源當中的大角度入射光即瘦由 反射材微結構加以反射阻擋’僅能夠讓光源當中的 入j經由反射材微結構以外的區域(亦 ： C片。由於只有小角度入射光能穿透光學膜片 =入射光則被反射並進行再利用，因此能使光 中在較狹窄的視角範圍，而使亮度提高。 〃 本發明之技術内容及技術特點已揭示如 本項技術之人士仍可能基於本發明之揭示而作各、 離本案發明精神之㈣及修飾。因此，本發明 二 應不限於實施例所揭示者，而庫包 ’、σ巳圍 杜應包括各種不背離本發明之 曰換及修飾，並為以下之申請專利範圍所涵蓋。 【圖式簡單說明】 第一圖係為習有直下式背光模組之結構示意圖。 =圖⑷、⑻係為本發明第一實施例之光學膜片外觀立 為本發明中光學膜片製造方法之流程示意圖。 ㈤（A)、⑻係為本發明巾遮錢板覆 面之結構剖視圖。 疋子膜片表 10 200903034 第五圖係為本發明中反射材微結構之作 第六圖係為本發明中第二實施膜片：圖。 大示意圖。 胰片局部剖視敌 第七圖係為本發财整體光學❹之光 第八圖係為本發明中第二與浐々^业η 町下忍圖。 大示意。第―員施例之先學膜片局部剖視放 局部剖視放 第九圖係為本發明中第四實施例之光學膜 大示意。 本發日种光學膜片應用於直下式背光模組之 第十-圖係為本發”光學膜片應用於側光式背光模組 之結構示意圖。 第十- ® (A)係為本發财溝槽深度較深之光線穿射示音 圖。 第十二圖⑻料本發财溝槽深度較淺之光線穿射示意 【主要元件代表符號說明】 A1入光面 A2出光面 10光學膜片 11光穿射區 12反射材微結構 121V型溝槽 200903034 122反光材料 123垂直延伸壁 20遮蓋模板 21窗口 3 0光源 40背光模組 41背板 42光源 43擴散板 44顯示面板 45增光膜片 46反射偏光片 47擴散膜片 51顯示面板 5 2導光板200903034 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a structure of an optical film and a method of manufacturing the same, and aims to provide an optical film having a high brightness level. / [Prior Art] Press, generally applied to the liquid crystal display of the information device, the intersystem: the choice: use the direct type or the side light type: use the light module architecture; as shown in the first figure, The structure of the direct backlight module 40 is configured by a back plate 41, a plurality of light sources 42, a diffusing plate 43 and a display panel 44, respectively, from the inside to the outside; Each of the light sources 42 may be a straight strip or a U-shaped or other continuously bent shape of the tube and laid between the back plate 41 and the diffusion plate 43 at an appropriate distance, and fixed on the back plate, the liquid crystal thereof The display effect of the module is composed of the light emitted by each of the light sources 42. The overall backlight module 40 has an effect of increasing the brightness. Generally, at least two diffusion films 47 (Diffusi〇n Film) and at least one brightness enhancement film are further disposed between the diffusion plate 43 and the display panel 44. The film (Brightness Enhancement Film, commonly known as: BEF) 45 and the Reflective Polarizer (Dual Brightness Enhancement Film, commonly known as DBEF) 46 are used together, in which the diffusion film can make the diffusion of the diffusion plate more uniform, and the backlight module as a whole The brightness of the light has also improved. However, at present, the source of the brightness enhancement film 45 is almost all swayed by 3M. Although the Taiwan display industry has developed, the display industry 200903034 ϊ 蹲 has long been restricted by foreign companies, resulting in low profits. In addition, the number of optical films used in the moon and wood structures is large, and the optical efficiency of the phase group is reduced, the assembly yield is limited, and the thickness is increased. SUMMARY OF THE INVENTION The main purpose of Light 2 is to provide a level of high brightness = light = sheet. In order to achieve the purpose of 'mainly on the surface of the optical film into the light surface, the complex number is separated by the microstructure of the reflective material (4), and the reflective structure of the reflective material is provided with grooves, and in the groove The area is covered with reflective materials. According to this, the large-angle incident light from the light source is reflected and blocked by the microstructure of the reflective material, and only a small-angle incident light among the light sources can be incident on the optical film via a region other than the microstructure of the reflective material. Since only a small angle of incident light can penetrate the optical diaphragm, the human angle of the pupil is reflected and reused, so that the light can be concentrated in a narrow range of viewing angles, and the party can be promoted. Specifically, the present invention has the following effects: 1. The optical film of the present invention can be applied to a backlight module to enable the overall backlight module to achieve a high brightness performance level. 2. Since the optical film of the present invention has high brightness characteristics, it can replace the brightness enhancement film and reduce the use of the diffusion film, thereby effectively reducing the thickness of the backlight module. [Embodiment] 200903034 The characteristics of the media = can be clearly understood by referring to the detailed description of the drawings and the embodiments. This month, the film and its manufacturing method and the application of the optical film A are provided with an optical film having a high brightness level and a film in the microstructure; as shown in the second figure (A) , the overall optical Μ # $ into the smooth surface A1 and the light-emitting surface A2, mainly on the surface of the light-incident surface of the light-reflecting material 12 separated by the light-reflecting area A1 ^ reflective material microstructure 12 in the optical film The light incident surface of the sheet 1G is changed to the right \rf"v-type groove 121, and in the region of the v-shaped groove 121, if the width of the light-through region 11 is L, the first: or Η, the 沟槽-shaped groove 121 The depth of the optical film 1G is deeper than 2, ', 'Η4Η' is greater than 1; when it is, the groove can also be a groove of the shape of the other, for example, a U-shaped groove. In addition, the reflective material 122 may be silver, ruthenium, bismuth trioxide, diterpenoid or alloy coating, and may be; third; ', (β) no, the manufacturing method is ... providing an optical film ' The surface of the optical W1G is formed with a plurality of: light, a partial region of the sheet 1G is covered, and a portion of the region is covered with a concealing and changing plate 20, and the 20-series of the optical film 1 is provided with a groove 112: Under the shielding effect of the 杈 杈 plate, the optical film / 2 = 2 is in the exposed area of the cover template, and the rest is the cover area; the enamel of 121 is coated with the reflective material": the reflective material is placed, and the material is controlled ν细可响_Reflecting material 200903034 - The light material in the reflective material micro-junction 121 can be overlaid on the surface of the v-groove (2) as shown in the fifth figure, or as shown in the sixth figure, The v-shaped groove 121 is filled with 'the main function of which is to have a light reflection effect on the portion of the batch of the reflective material 122. As shown in the fifth and seventh figures, the effect I of the reflective material microstructure 12 comes from the light source 30. The large-angle incident light is reflected by the reflective material microstructure 2, which can only make the light source 3〇# small The incident light is incident on the optical film #1() via an area other than the reflective material microstructure, and the block between the f-reflecting material microstructure 12V-type groove 121 is used as the incident light. The light incident on the optical film can be effectively concentrated in the area of the optical film 1G constructed with the "shooting area 11". Since only a small angle of human light can penetrate the optical film 4 1G, most of the people are irradiated and reflected. After the re-performation, the light can be made in a narrower viewing angle H, and the brightness is improved. The light entrance surface of the optical film 1 can be f-figure, The planar shape shown in FIG. 7 or the convex light-emitting surface 11 having a convex surface as shown in FIG. 6 has a light collecting effect, and the brightness can be made and the light surface of the light penetrating region 11 is different. The planar H-plane shape 'as shown in the eighth and ninth diagrams', the depth of the V-shaped groove (2) of the reflective material microstructure field can be adjusted according to the visual power consumption desired by the light. For example, When the range of the angle of light that the light wants to focus is narrow, the depth of the v-shaped groove 12丨 can be deepened, such as When the angle of view g of the light is concentrated, the depth of the v-shaped groove 121 can be made shallower, as shown in Fig. 12 (8), see 200903034. The angle of expansion 0 formed by the adjacent-V-shaped groove 121 on the light-through region 11 is between 1 G and 6 〇. Further, between the 'V-shaped groove 121 and the optical (four) 1 () surface and There is: a vertical extension of a specific height (four) 123, in order to control the light guiding path: the target circumference, so that the light of all the light sources 30 entering the optical film 10 can be effectively concentrated on the optical film, the light-piercing area is formed, and the light is emitted. For the purpose, of course, the reflective material 122 can selectively fill the portion of the v-shaped groove or fill the 7-type groove and the vertical extension (4), or as shown in the eighth and ninth figures. 'Approved on the v-groove and the vertically extending wall surface. By the above, the optical film formed by using the microstructure of the reflective material can be practically applied to the backlight module, as shown in the tenth figure of the σ, which is the structure of the optical film #一秘直直式 backlight module of the present invention. In the schematic view, the optical film 10 is disposed above the plurality of light sources 30, and the display panel 5 is disposed above the optical film 1 and the light sources 3 are respectively disposed below the light-transmitting region 11, respectively. 11 is a schematic structural view of an optical film of the present invention applied to an edge-lit backlight module. The edge-lit backlight module includes at least a display panel 51, an optical film 1 and a light guide 52. And the plurality of light sources 30, the surface of the light incident surface A1 of the optical film 10 is also constructed with a plurality of light-transmitting regions n separated by the reflective material microstructures 12, and the light guide plate 52 is disposed under the optical film 10, and is opposite The optical film <1 is placed on one side of the light surface A1, and the display panel 51 is disposed on one side of the optical film sheet 相对 with respect to the light-emitting surface A2, and each of the light sources 30 is formed on the side of the light guide plate 52 side 200903034. Into the light, causing the light source 30 to emit light through the light guide plate' AW by an optical film to the light incident surface into the light, then the light enters the display panel 51 reaches up display. Regardless of whether the optical film 1G is applied to a direct-type or side-light group, the optical film h-side is provided with a phase (four) of a reflective material micro-presence and a first-through region, and a large-angle incident light from the light source can be used. That is, the thin reflection by the reflective material microstructure is only able to allow the input j among the light sources to pass through the area other than the microstructure of the reflective material (also: C piece. Since only a small angle of incident light can penetrate the optical film = incident light is reflected And reused, so that the light can be made in a narrower viewing angle range, and the brightness is improved. 技术 The technical content and technical features of the present invention have been disclosed, and those skilled in the art can still make based on the disclosure of the present invention. Therefore, the present invention is not limited to the embodiments disclosed, and the library package ', σ巳围杜 should include various types of replacement and modification without departing from the invention, and is the following application. The scope of the patent is covered. [Simplified description of the drawings] The first figure is a schematic diagram of the structure of a direct-lit backlight module. = Figures (4) and (8) show the appearance of the optical film of the first embodiment of the present invention. The flow chart of the method for manufacturing the optical film in the present invention. (5) (A), (8) is a sectional view of the structure of the cover of the invention. The scorpion film sheet 10 200903034 The fifth figure is the microstructure of the reflector material in the present invention. The sixth figure is the second embodiment of the diaphragm in the present invention: Fig. Large schematic view. The partial view of the pancreatic part is the second picture of the enemy. The ninth figure of the first embodiment of the present invention is a large schematic of the optical film of the fourth embodiment of the present invention. The tenth-picture of the Japanese-made optical film used in the direct-lit backlight module is a schematic diagram of the structure of the optical film used in the edge-lit backlight module. The tenth - ® (A) is the fortune The light with deep groove depth penetrates the sound map. Twelfth figure (8) The light depth of the trench is shallow. [Main component representative symbol description] A1 light surface A2 light surface 10 optical film 11 light penetration area 12 reflective material microstructure 121V type groove 200903034 122 reflective material 12 3 vertical extension wall 20 cover template 21 window 3 0 light source 40 backlight module 41 back plate 42 light source 43 diffusion plate 44 display panel 45 brightness enhancement film 46 reflection polarizer 47 diffusion film 51 display panel 5 2 light guide plate