201202770 六、發明說明： 【發明所屬之技術領域】 本發明有關於一種導光件，特別是有關於一種具彎曲 狀導光板之導光件及採用此導光件之背光模組。 【先前技術】 傳統導光板具一入光面及一出光面。入光面位於導光 板可呈現出其厚度之侧邊、出光面位於導光板之一側表 面。導光板的導光方式是將光源放置於入光面，使得光源 之光線自入光面被導入導光板中。此外，導光板的一側表 面具有光學微結構。當光線進入導光板後，藉由光學微結 構之作用下，光線在導光板内進行反射，由出光面發光。 然而，由於導光板之光學微結構在製作上須要考量其 外型或材質等條件，否則，在光學微結構在製作上將導致 導光板之損壞。因此，導光板之光學微結構在製作上仍具 有一些限制需要突破。 【發明内容】 本發明揭露一種導光件及採用此導光件之背光模組， 用以提供光學微結構於呈彎曲狀之導光板上。 本發明揭露一種導光件及採用此導光件之背光模組， 用以提供面光源於呈彎曲狀之導光板上。 此種導光件包含一導光板、一可撓性光學膜及一黏合 膠層。導光板呈彎曲狀，具有一入光面、相對之一凸弧狀 出光面及一凹弧狀出光面。可撓性光學膜具有複數個光學 201202770 微結構。黏合膠層位於位於凸弧狀出光面及凹弧狀出光面 其中之一與可撓性光學膜之間，用以黏著固定可撓性光學 膜於導光板上。另外黏合膠層與導光板具有相同之折射 率。本發明之一實施例中，導光板呈c字形、u字形或波 浪形。 本發明之另一實施例中，此些光學微結構設置於可撓 性光學膜之兩對應面其中之一。 本發明之又一實施例中，此些光學微結構為複數個突 出部或凹入部。此些光學微結構為複數個印刷點或透鏡。 本發明之又一實施例中，可撓性光學膜為一軟性基 板。 本發明之又一實施例中，導光件更包括一反射層，反 射層位於可撓性光學膜背對導光板之一面。反射層為一反 射片或一反射物塗層。 本發明之又一實施例中，導光件更包括一反射層，導 光板介於反射層與可撓性光學膜之間。反射層為一反射片 或一反射物塗層。 本發明之又一實施例中，此種背光模組，包含一上述 之導光件及一光源。光源面對導光板之入光面，用以投 射光線至導光板内。 如此，藉由本發明之導光件即可於導光板上提供光學 微結構。使用者不需要考量導光板之外型或材質等無法製 作光學微結構的條件，或者需要額外更複雜之工藝或機器 設備來完成光學微結構的製作。也因為使用者不需要考量 導光板之外型或材質等無法製作光學微結構的條件，因 201202770 此，導光板之選擇也可朝大面積尺寸之方向進行。 【實施方式】 以下將以圖示及詳細說明清楚說明本發明之精神，如 熟悉此技術之人員在瞭解本發明之實施例後，當可由本發 明所教示之技術，加以改變及修飾，其並不脫離本發明之 精神與範圍。 請參閱第1A圖及第1B圖所示，第1A圖繪示本發明 φ 導光件10〇組於一實施例下之分解圖。第1B圖繪示第1A 圖沿剖面線1B-1B之剖面圖。 本發明係提供一種導光件1〇〇。導光件丨〇〇包含一導 光板200、一可撓性光學膜300及一黏合膠層400。此導光 板200呈彎曲狀，具有相對之正面及反面，以及環繞其正 面與反面之多個側面，其中正面或反面的面積均大於其中 一側面的面積。導光板200之正面呈非平面狀（如曲面、波 浪面等），具有一凸弧狀出光面21〇。導光板2〇〇之反面呈 φ 非平面狀（如曲面、波浪面等），具有一凹弧狀出光面220。 任一個侧面皆可為一用以導引入光線進入導光板2〇〇之入 光面230 ’而自凸弧狀出光面21〇及凹弧狀出光面220送 出光線，以提供雙向之面光源。 此可撓性光學膜300可活動地彎曲以配合導光板2〇〇 之弧度。此外，此可撓性光學臈300具兩相對之第一面31〇 及第二面320。此可撓性光學膜3〇〇至少其中一面具有複 數個光學微結構330。黏合膠層400具可透光性，可配置 於導光板200與可撓性光學膜3〇〇之間。此外，黏合膠層 201202770 400與導光板200具有相同之（光）折射率。 如此，由於黏合膠層400與導光板200具有相同之（光） 折射率，黏合膠層400除了可實體地固定此可撓性光學膜 300於此導光板200上，更可提供光線往返於可撓性光學 膜300與導光板200之間。 本發明之一實施例中，此可撓性光學膜300可活動地 彎曲以配合導光板200之凹弧狀出光面220之弧度（第1B 圖）。黏合膠層400具可透光性，可配置於導光板200之凹 弧狀出光面220與可撓性光學膜300之間，以黏著固定此 可撓性光學膜300於導光板200之凹弧狀出光面220上。 請參閱第2圖所示，第2圖繪示本發明導光件於另一 實施例下之剖面圖。本發明之另一實施例中，此可撓性光 學膜300可活動地彎曲以配合導光板200之凸弧狀出光面 210之弧度（第2圖）。黏合膠層400具可透光性，可配置 於導光板200之凸弧狀出光面210與可撓性光學膜300之 間。 本發明之又一實施例中，導光板200例如可呈C字形 或U字形（如第1圖）。 請參閱第3圖所示，第3圖繪示本發明導光件之 導光板200呈波浪狀之示意圖。導光板200例如可呈波浪 形（如第3圖）’使得導光板200之正面、反面皆具有一凸 弧面240及一凹弧面260。 回見第1圖所示，本發明之另一實施例中’導光板200 為透明塑膠材質，例如可為聚曱基丙烯酸曱酯 (polymethyl methacrylate，PMMA )、聚苯乙烯 201202770 (polystyrene ’ PS)、聚碳酸酉旨（p〇iyCarb〇nate，PC)、 聚對本一甲酸乙二醋（polyethylene Terephthalate , PET)、聚亞醯胺（poiyimide)或通常技藝者所熟知之其 他材質。研發人員可依實際需求或限制加以選擇導光板之 材質。 回見第1圖所示，本發明之又一實施例中，可撓性光 學膜300例如可為一軟性基板’例如軟性電路基板（flexible printed circuit board，FPC)之材質。另外，可撓性弁學膜 300之材質例如可為聚對苯二甲酸乙二醋（p〇lyethyle狀 Terephthalate，PET)或通常技藝者所熟知之其他材質。此 外，可撓性光學膜300相當地薄（約〇25mm)，故有助彎 曲後配置於導光板2GG上。研發人員可依實際需求或限制 加以選擇可撓性光學膜300之材質。 上述兩實施例之一可變化之例子中，此些光學微結構 330例如可设置於可撓性光學膜3〇〇面對凹弧狀出光面 或凸弧狀出光面210之一面，如第—面31〇 (如第1A圖所 示）。或者，此些光學微結構330例如可設置於可撓性光學 膜300背對凹弧狀出光面220 (第1B圖）或凸弧狀出光面 21〇(第2圖）之一面’即第二面32〇(第1B圖所示）。又或 者，可撓性光學膜300之雙面皆可設置此些光學微结構 330。研發人員可依實際需求或限制加以選擇光學微結構之 設置位置。 需說明的是，請參閱第4A圖至第4D圖所示，第4A 圖至第4D圖是本發明導光件刚之可挽性光學膜獅之 光學微結構330於不同實施例下之示意圖。本發明並不限 201202770 制光學微結構之形式，可為複數個突出部（如第4A圖之 球开，出部331、第4B圖之三角錐形凸出部332或鑛齒狀 凸出部等等）或複數個凹陷部（如第4C圖之球形凹陷部 333、第4D圖之三角錐形凹陷部334或鋸齒狀凹陷部等等） 以將光線產生更多之折射或反射，*更均句地發光。研發 員可依實際$求或限制加以調签。而且此些光學微結構 330中任二凸出部（或凹陷部）間之距離或任一凸出部（或 凹陷。卩）之尚度（或深度）並未加以限制。 二几步1 _所示，此兩實施例之另一可變化之例子 :性: = 微結構330亦可為均勾或不均句地分佈於可 排列在可撓性光學膜300上。研發人員二 制加以選擇光學微結構之排列方式。 實際#求或限 此兩實施例之又一可變化之例子φ 330可八κ，丨盐_ ^于肀’此些光學微結構 3〇 了刀別藉由印刷、機械加卫、_ 成型於可撓性光學膜_上。如此，此料方式予以 可分別為印刷或塗佈於可撓性光學膜1學微結構330 構為突出或凹入之透鏡。研發人員可依^印刷點或結 以選擇光學微結構之製作方式及具體種類f吒求或限制加 本發明之又-實補巾，黏切層梅係 (例如梦膠或U V膠）之膠料，經塗佈田具树月曰材料 ^ d上山#而220f笛m国、A P刷至導光板200 之凹弧狀出先面220 (第1B圖）或凸弧狀 2圖），以便黏固可撓性光學膜3〇〇。L弟 透明或至少半透明。 〃中^膠層働呈 請參閱第5圖所示，第5圖繪示本發 ^ %背光模組於一 201202770 實施例下之示意圖。本發明之又一實施例中，導光件更包 括一反射層500。反射層500位於可撓性光學膜30〇背對 凹弧狀出光面220之一面，即第二面320，用以反射通過 可撓性光學膜300之光線回導光板200中而發光。 請參閱第6圖所示，第6圖緣示本發明導光件1〇〇於 又一實施例下之剖面圖。導光件1〇〇更包括一反射層5〇〇。 反射層500位於可撓性光學膜300背對凸弧狀出光面210 之一面，即第二面320。 上述各實施例中’此反射層500例如可為反射片或反 射物塗層。此外，反射層500較佳可呈白色或銀色等較佳 反射效果之顏色。研發人員可依實際需求或限制選擇使用 反射層500。請參閱第7圖所示，第7圖繪示本發明導光 件於再一實施例下之剖面圖。本發明之再一實施例中，導 光件100更包括一反射層500。當可橈性光學膜3〇〇位於 導光板200之凹弧狀出光面220上時，反射層500位於導 光板200之凸弧狀出光面210，使得導光板2〇〇介於反射 層500與可撓性光學膜300之間。故，當光線自可撓性光 學膜300被引導回導光板200，而朝凸弧狀出光面210發 送時，反射層500反向地將光線反射至凹弧狀出光面22〇， 並由可撓性光學膜300發出光線。 反之’其他實施例亦揭露當可撓性光學膜位於導光板 之凸弧狀出光面時，導光板介於反射層與可撓性光學膜之 間（圖中未示）。 復參閱第5圖所示’本發明另提供一種背光模組7〇〇。 背光模組700包含一上述之導光件1〇〇及一光源6〇〇。此 201202770 光源600，例如是冷陰極燈管（c〇ld Cathode Fluorescent Lamp，CCFL ’ 未圖示）或發光二極體 610 ( light-emitting diode ’ LED) ’大致位於導光板200之入光面230，並投射 光線至導光板200内。當本發明之光源60〇由一或多個發 光二極體610元件所組成時，可具備體積小、使用壽命長 及省電等優點。如此，當光源600之光線進入導光板200 後，光線可經黏合膠層400被此些光學微結構330所反射 或折射回導光板200中’而由凸弧狀出光面21〇進行出光。 第5圖僅以可撓性光學膜3〇〇位於凹弧狀出光面220 之導光件100為例，然而，本發明不侷限於此，本發明背 光模組700之導光件1〇〇亦可應用於可撓性光學膜3〇〇位 於凸弧狀出光面210之實施例。 本發明之又一實施例中，上述之此種背光模組7〇〇之 其中之一可應用於一電子裴置中。本發明之電子裝置並不 限為手機、攝影機、照相機、遊戲機、手錶、音樂播放器、 顯示螢幕、數位相框及照明用具其中之一。 综上所述’本發明導光件藉由可撓性光學膜之可以產 生適當挽性的特性’使得具有光學微結構之可撓性光學膜 可撓性地配合導光板之凹弧面，進而固定可撓性光學膜於 導光板之凹弧面上，以視為導光板之一面。如此，藉由本 發明之導光件’使用者不需要考量導光板之外型或材質等 條件’或者f要更複雜之工藝姐備來達成鮮微結構的 製作，即可於導光板上提供光學微結構。 I發明所揭露如上之各實施例中，並非用以限定本發 在不職本發明之精神和範圍内， 201202770 當可作各種之更動與潤飾，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1A圖繪示本發明導光件於一實施例下之分解圖。 第1B圖繪示第1A圖沿剖面線1B-1B之剖面圖。201202770 VI. Description of the Invention: [Technical Field] The present invention relates to a light guiding member, and more particularly to a light guiding member having a curved light guiding plate and a backlight module using the same. [Prior Art] A conventional light guide plate has a light entrance surface and a light exit surface. The light incident surface is located on the side of the light guide plate at the thickness of the light guide plate, and the light exit surface is located on one side of the light guide plate. The light guiding mode of the light guide plate is to place the light source on the light incident surface, so that the light of the light source is introduced into the light guide plate from the light incident surface. Further, one side surface of the light guide plate has an optical microstructure. When the light enters the light guide plate, the light is reflected in the light guide plate by the optical micro-structure, and is emitted by the light-emitting surface. However, since the optical microstructure of the light guide plate needs to be considered in terms of its appearance or material, the optical microstructure may cause damage to the light guide plate. Therefore, there are still some limitations in the fabrication of the optical microstructure of the light guide plate. SUMMARY OF THE INVENTION The present invention discloses a light guiding member and a backlight module using the light guiding member for providing an optical microstructure on a curved light guiding plate. The invention discloses a light guiding member and a backlight module using the light guiding member for providing a surface light source on a curved light guiding plate. The light guide comprises a light guide plate, a flexible optical film and an adhesive layer. The light guide plate has a curved shape, and has a light-incident surface, a convex arc-shaped light-emitting surface and a concave arc-shaped light-emitting surface. The flexible optical film has a plurality of optical 201202770 microstructures. The adhesive layer is located between one of the convex arc-shaped light-emitting surface and the concave arc-shaped light-emitting surface and the flexible optical film for adhering the flexible optical film to the light guide plate. In addition, the adhesive layer has the same refractive index as the light guide plate. In an embodiment of the invention, the light guide plate has a c-shape, a u-shape or a wave shape. In another embodiment of the invention, the optical microstructures are disposed on one of two corresponding faces of the flexible optical film. In still another embodiment of the invention, the optical microstructures are a plurality of protrusions or recesses. Such optical microstructures are a plurality of printed dots or lenses. In still another embodiment of the invention, the flexible optical film is a flexible substrate. In still another embodiment of the present invention, the light guiding member further includes a reflective layer, and the reflective layer is located on a side of the flexible optical film facing away from the light guiding plate. The reflective layer is a reflective sheet or a reflective coating. In still another embodiment of the present invention, the light guiding member further includes a reflective layer interposed between the reflective layer and the flexible optical film. The reflective layer is a reflective sheet or a reflective coating. In another embodiment of the present invention, the backlight module includes a light guide and a light source. The light source faces the light incident surface of the light guide plate to emit light into the light guide plate. Thus, the optical microstructure can be provided on the light guide plate by the light guide member of the present invention. The user does not need to consider the conditions of the light guide plate, such as the shape or material, which cannot be used to fabricate the optical microstructure, or the need for additional and more complicated processes or equipment to complete the fabrication of the optical microstructure. Also, since the user does not need to consider the conditions of the optical plate other than the type or material of the light guide plate, the selection of the light guide plate can also be made in the direction of the large area due to 201202770. BRIEF DESCRIPTION OF THE DRAWINGS The spirit of the present invention will be clearly described in the following description and the detailed description of the embodiments of the present invention, which can be modified and modified by the teachings of the present invention, The spirit and scope of the invention are not departed. Please refer to FIG. 1A and FIG. 1B , and FIG. 1A is an exploded view of the φ light guide 10 本 according to an embodiment of the present invention. Fig. 1B is a cross-sectional view taken along line 1B-1B of Fig. 1A. The present invention provides a light guide member 1A. The light guide member 丨〇〇 includes a light guide plate 200, a flexible optical film 300, and an adhesive layer 400. The light guide plate 200 has a curved shape with opposite front and back faces, and a plurality of sides surrounding the front and back faces, wherein the front or back faces are larger than the area of one of the sides. The front surface of the light guide plate 200 is non-planar (such as a curved surface, a wave surface, etc.), and has a convex arc-shaped light-emitting surface 21〇. The opposite side of the light guide plate 2 is φ non-planar (such as a curved surface, a wave surface, etc.), and has a concave arc-shaped light exit surface 220. Any one of the sides may be a light-emitting surface 230' for guiding the light into the light guide plate 2, and the light is emitted from the convex arc-shaped light-emitting surface 21〇 and the concave arc-shaped light-emitting surface 220 to provide a bidirectional surface light source. . The flexible optical film 300 is movably bent to match the curvature of the light guide plate 2''. In addition, the flexible optical disk 300 has two opposite first faces 31 and second faces 320. The flexible optical film 3 has a plurality of optical microstructures 330 on at least one of its sides. The adhesive layer 400 is permeable to light and can be disposed between the light guide plate 200 and the flexible optical film 3〇〇. Further, the adhesive layer 201202770 400 has the same (light) refractive index as the light guide plate 200. Thus, since the adhesive layer 400 and the light guide plate 200 have the same (light) refractive index, the adhesive layer 400 can physically fix the flexible optical film 300 on the light guide plate 200, and can provide light to and from the optical plate 200. The flexible optical film 300 is between the light guide plate 200 and the light guide plate 200. In one embodiment of the invention, the flexible optical film 300 is movably curved to match the curvature of the concave arc-shaped light exit surface 220 of the light guide plate 200 (Fig. 1B). The adhesive layer 400 is permeable to light and can be disposed between the concave arc-shaped light-emitting surface 220 of the light guide plate 200 and the flexible optical film 300 to adhere the flexible optical film 300 to the concave arc of the light guide plate 200. Shaped on the light surface 220. Referring to Fig. 2, Fig. 2 is a cross-sectional view showing the light guide of the present invention in another embodiment. In another embodiment of the present invention, the flexible optical film 300 is movably curved to match the curvature of the convex arc-shaped light exiting surface 210 of the light guide plate 200 (Fig. 2). The adhesive layer 400 is permeable to light and can be disposed between the convex arc-shaped light-emitting surface 210 of the light guide plate 200 and the flexible optical film 300. In still another embodiment of the present invention, the light guide plate 200 may have a C-shape or a U-shape (e.g., Fig. 1). Referring to FIG. 3, FIG. 3 is a schematic view showing the light guide plate 200 of the light guide member of the present invention in a wave shape. The light guide plate 200 can be, for example, wavy (as shown in FIG. 3) such that the front and back surfaces of the light guide plate 200 have a convex curved surface 240 and a concave curved surface 260. Referring to FIG. 1 , in another embodiment of the present invention, the light guide plate 200 is made of a transparent plastic material, and may be, for example, polymethyl methacrylate (PMMA) or polystyrene 201202770 (polystyrene ' PS). Polycarbonate (p〇iyCarb〇nate, PC), polyethylene terephthalate (PET), poiyimide or other materials well known to those skilled in the art. The R&D personnel can select the material of the light guide plate according to actual needs or restrictions. Referring to Fig. 1, in another embodiment of the present invention, the flexible optical film 300 can be, for example, a flexible substrate such as a flexible printed circuit board (FPC). Further, the material of the flexible drop film 300 may be, for example, polyethylene terephthalate (PET) or other materials well known to those skilled in the art. Further, since the flexible optical film 300 is relatively thin (about 25 mm), it is disposed on the light guide plate 2GG after being bent. The developer can select the material of the flexible optical film 300 according to actual needs or limitations. In one embodiment of the above two embodiments, the optical microstructures 330 can be disposed, for example, on one side of the flexible optical film 3 facing the concave arc-shaped light-emitting surface or the convex arc-shaped light-emitting surface 210. Face 31〇 (as shown in Figure 1A). Alternatively, the optical microstructures 330 may be disposed, for example, on the flexible optical film 300 opposite to the concave arc-shaped light exit surface 220 (FIG. 1B) or the convex arc-shaped light exit surface 21 (FIG. 2). Face 32〇 (shown in Figure 1B). Alternatively, the optical microstructures 330 may be disposed on both sides of the flexible optical film 300. The developer can select the location of the optical microstructure according to actual needs or restrictions. It should be noted that, as shown in FIG. 4A to FIG. 4D, FIG. 4A to FIG. 4D are schematic diagrams of the optical microstructures 330 of the optical light guide lion of the present invention under different embodiments. . The invention is not limited to the form of the 201202770 optical microstructure, and may be a plurality of protrusions (such as the ball opening of the 4A diagram, the outlet portion 331, the triangular pyramidal projection 332 of the 4B diagram or the mineral toothed projection). Etc. or a plurality of depressions (such as the spherical depression 333 of FIG. 4C, the triangular pyramidal depression 334 of the 4D diagram or the serrated depression, etc.) to generate more refraction or reflection of light, *more Every sentence shines. The R&D staff can adjust the bid according to the actual demand or limit. Moreover, the distance between any two projections (or depressions) in the optical microstructures 330 or the extent (or depth) of any of the projections (or depressions) is not limited. Another variable example of the two embodiments is shown in two steps 1 -: Sex: = The microstructures 330 may also be uniformly or non-uniformly distributed on the flexible optical film 300. The R&D staff is responsible for selecting the arrangement of the optical microstructures. Actual #求或限限的变化例An example of another variation φ 330 can be eight κ, 丨 _ _ 肀 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此Flexible optical film _ on. Thus, the material may be separately printed or coated on the flexible optical film 1 microstructure to form a lens that is protruded or recessed. The R&D personnel can select the optical micro-structures and the specific types of the printing points or knots to request or limit the addition of the present invention - the real patch, the adhesive layer of plum (such as dream gel or UV glue) glue Material, coated field tree tree 曰 material ^ d Shangshan # and 220f flute m country, AP brush to the light guide plate 200 concave arc-shaped front face 220 (Fig. 1B) or convex arc 2) for adhesion Flexible optical film 3 〇〇. L brother is transparent or at least translucent. 〃中^胶层働。 Please refer to Figure 5, Figure 5 is a schematic view of the present invention. The backlight module is shown in a 201202770 embodiment. In still another embodiment of the present invention, the light guiding member further includes a reflective layer 500. The reflective layer 500 is located on one side of the flexible optical film 30 opposite to the concave arc-shaped light-emitting surface 220, that is, the second surface 320 for reflecting light passing through the flexible optical film 300 to return to the light guide plate 200 to emit light. Referring to Fig. 6, Fig. 6 is a cross-sectional view showing the light guide member 1 of the present invention in a further embodiment. The light guiding member 1 further includes a reflective layer 5〇〇. The reflective layer 500 is located on one side of the flexible optical film 300 facing away from the convex arc-shaped light-emitting surface 210, that is, the second surface 320. The reflective layer 500 in the above embodiments may be, for example, a reflective sheet or a reflector coating. Further, the reflective layer 500 preferably has a color of a preferred reflection effect such as white or silver. The developer can choose to use the reflective layer 500 according to actual needs or restrictions. Referring to Figure 7, Figure 7 is a cross-sectional view of the light guide of the present invention in still another embodiment. In still another embodiment of the present invention, the light guide 100 further includes a reflective layer 500. When the flexible optical film 3 is located on the concave arc-shaped light-emitting surface 220 of the light guide plate 200, the reflective layer 500 is located on the convex arc-shaped light-emitting surface 210 of the light guide plate 200, so that the light-guiding plate 2 is interposed between the reflective layer 500 and Between the flexible optical films 300. Therefore, when the light is guided back to the light guide plate 200 from the flexible optical film 300 and transmitted toward the convex arc-shaped light-emitting surface 210, the reflective layer 500 reversely reflects the light to the concave arc-shaped light-emitting surface 22〇, and The flexible optical film 300 emits light. On the other hand, the other embodiments also disclose that when the flexible optical film is located on the convex arc-shaped light-emitting surface of the light guide plate, the light guide plate is interposed between the reflective layer and the flexible optical film (not shown). Referring to FIG. 5, the present invention further provides a backlight module 7A. The backlight module 700 includes a light guide member 1 and a light source 6〇〇. The 201202770 light source 600, for example, a cold cathode fluorescent lamp (c〇ld Cathode Fluorescent Lamp, CCFL 'not shown) or a light-emitting diode 'LED' is located substantially at the light incident surface 230 of the light guide plate 200. And projecting light into the light guide plate 200. When the light source 60 of the present invention is composed of one or more light-emitting diode 610 elements, it can have the advantages of small size, long service life, and power saving. Thus, when the light of the light source 600 enters the light guide plate 200, the light can be reflected by the optical microstructures 330 or refracted back into the light guide plate 200 by the adhesive layer 400, and light is emitted from the convex arc-shaped light exit surface 21〇. 5 is only an example of the light guide 100 of the flexible optical film 3 〇〇 located on the concave arc-shaped light-emitting surface 220. However, the present invention is not limited thereto, and the light guide 1 of the backlight module 700 of the present invention is not limited thereto. It can also be applied to an embodiment in which the flexible optical film 3 is located on the convex arc-shaped light-emitting surface 210. In still another embodiment of the present invention, one of the above-described backlight modules 7 can be applied to an electronic device. The electronic device of the present invention is not limited to one of a mobile phone, a video camera, a camera, a game machine, a watch, a music player, a display screen, a digital photo frame, and a lighting fixture. In summary, the 'light guide of the present invention can produce a suitable property by the flexible optical film', so that the flexible optical film having the optical microstructure can be flexibly fitted to the concave surface of the light guide plate, thereby The flexible optical film is fixed on the concave surface of the light guide plate to be regarded as one side of the light guide plate. In this way, the light guide member of the present invention can provide optical on the light guide plate without requiring the user to consider the condition of the light guide plate or the material or the material to prepare the fresh structure. microstructure. The inventions disclosed in the above are not intended to limit the scope of the invention and the scope and scope of the invention, 201202770. The scope defined by the patent scope shall prevail. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: FIG. 1A illustrates the light guide of the present invention in one implementation. An exploded view of the example. Fig. 1B is a cross-sectional view taken along line 1B-1B of Fig. 1A.
第2圖繪示本發明導光件於另一實施例下之剖面圖。 第3圖繪示本發明導光件之導光板呈波浪狀之示意圖。 第4A圖至第4D圖是本發明導光件之可撓性光學膜之 光學微結構於不同實施例下之示意圖。 第5圖繪示本發明背光模組於一實施例下之示意圖。 第6圖繪示本發明導光件於又一實施例下之剖面圖。 第7圖繪示本發明導光件於再一實施例下之剖面圖。Figure 2 is a cross-sectional view showing another embodiment of the light guide of the present invention. FIG. 3 is a schematic view showing the light guide plate of the light guide member of the present invention in a wave shape. 4A through 4D are schematic views of the optical microstructure of the flexible optical film of the light guide of the present invention in various embodiments. FIG. 5 is a schematic view showing a backlight module of the present invention in an embodiment. Figure 6 is a cross-sectional view showing the light guide of the present invention in still another embodiment. Figure 7 is a cross-sectional view showing the light guide of the present invention in still another embodiment.
【主要元件符號說明】 100 :導光件 200 :導光板 210 :凸弧狀出光面 220 :凹弧狀出光面 230 :入光面 240 :凸弧面 260 :凹弧面 300 :可撓性光學膜 310 :第一面 331 :球形凸出部 332 :三角錐形凸出部 333 :球形凹陷部 334 :三角錐形凹陷部 400 :黏合膠層 500 :反射層 600 :光源 610 :發光二極體 7〇〇 :背光模組 12 [s] 201202770 320 :第二面 1B-1B :剖面線 330 :光學微結構[Main component symbol description] 100: Light guide 200: Light guide plate 210: convex arc-shaped light-emitting surface 220: concave arc-shaped light-emitting surface 230: light-incident surface 240: convex curved surface 260: concave curved surface 300: flexible optical Film 310: first surface 331: spherical convex portion 332: triangular tapered convex portion 333: spherical depressed portion 334: triangular tapered concave portion 400: adhesive layer 500: reflective layer 600: light source 610: light emitting diode 7〇〇: backlight module 12 [s] 201202770 320 : second side 1B-1B: section line 330: optical microstructure
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