201241491 六、發明說明： 【發明所屬之技術領域】 •树明有關於-種導妹’特別是有_—種具反射 功能之導光板。 【先前技術】 、由於液晶顯示器（Liquid Crystal Display，LCD)的日 益普及，決定液晶顯示器亮度的背光模組的設計曰趨精 細。背光模組依照光源入射位置的不同分成側光式入光 (edge lighting)與直下式入光（bottom lighting)兩種， 以提供液晶顯示器所需之面光源。 習知的側光式背光模組包含光源、反射板、導光板、 擴散片及稜鏡片等等，其中光源位於導光板之侧面，反射 板位於導光板下方，擴散片及稜鏡片位於導光板上方，擴 散片位於稜鏡片與導光板之間。如此，當光源的光線進入 導光板内部時’藉由反射板之反射，光線可朝擴散片及稜 鏡片之方向被送出導光板，以形成輝度均勻的面光源，提 供液晶顯示器所需之亮度。 然而，由於反射片係利用黏膠黏附於導光板上，反射 片與導光板之間仍保有無法避免之微小空隙，對於光線之 全反射效果仍具有改良空間。此外，由於反射片黏附於導 光板上，導光板之面光源將因反射片產生光不均勻現象 (mura)，降低照明品質。 【發明内容】 v 201241491 、本發，為揭露—種導光板及具此導光板之背光模組， :2化背光模組之結構，不需額外準備具反射功能之獨 立兀件’進而達到降低成本之目的。 本發月為揭露一種導光板及具此導光板之背光模組， 用以消除導光層歧光制之削、空隙，㈣❹丨光線全 反射之目的。 、，發明為揭露-種導光板及具此導光板之背光模組， 用以/肖除產生光不均勻現象（mura)之目的，進而提升照明 品質。 本發明之—態樣是提供一種導光板，此導光板包含一 膠光學層、—第二塑膠光學層及多個光反射内容 物。第^膠光學層具有㈣之第—面及第二面。第一面 具有-，結構圖案。第二塑膠光學層疊合於第二面上。光 反射内容物分布於第二塑膠光學層内部。 从二!L此態樣之—實施财’第二塑膠光學層無接縫 且口 '、第一塑膠光學層之第二面上，其中第二塑膠光 層與第一塑膠光學層之間不具膠著層。 此態樣之另一實施例中，第二_光學 層疊合於第-塑膠光學層上。此態樣之其他實施例中 -塑膠光學層與第二塑膠絲層具相同之材質。 =態樣之其他實_巾，第__光學層與第二塑膠 光學層具相同之面積。 / 此態樣之其他實施例甲，第一塑膠光學層之 二塑膠光學層之厚度的3〜6倍以上。 又… 此態樣之其他實施例_，分布有光反射内容物之第二 201241491 塑膠光學層之光反射錄大於歸光學層之纽射係 此態樣之其他實施例中，此些光反射内容物之總體積 佔第二塑膠光學層之體積的20%〜50%。 一此態樣之其他實施例中，第一塑膠光學層與第二塑膠 光學層之材質係聚_、㈣腈·苯乙烯·丁二稀共聚物、 聚對苯二甲酸乙H苯乙稀、聚碳酸S旨、聚亞醯胺或 聚甲基丙烯酸甲酯或其組合。 此態樣之其他實施例中，光反射内容物係金屬粉末。 更進一步地，金屬粉末之材質為銀、銅、金、鎳、！呂、錫、 鉻、鈦、鐵或其組合。 此態樣之其他實施例中，光反射内容物為光學增白劑 粒子。更進—步地，光學增白齡 稀及硫酸!賊二氧化鈦與二氧切之組合。料一本乙 塑實施例中’分布有光反射内容物之第二 塑胗光子層呈白色、銀色或金色。 =4樣之其他實_中，微結構圖案包含外凸或内凹 更進一步地，微結構圖案之結構為球形、「V字 角形 形、U」字形、正方形、長方形、菱形、精圓形、三」子 波浪形或其組合。 此外，此種側射型背光模組包含一背板、一 ^光源、—稜鏡片及—擴散片 上。光源位於導光板之入光面。積鏡片位於二 面。擴散片位於導絲與稜鏡片之間。 出7^ 本毛明之另一態樣是提供一種導光板之製作方法，包 201241491 含步驟為由一出膠嘴同時射出成型一第一塑膠成形物及一 第二塑膠成形物’其中第二塑膠成形物内摻有多個光反射 内容物；接著，將第一塑膠成形物及第二塑膠成形物共同 壓合成型為一整體之導光板。 此另一態樣之一實施例中，當將第一塑膠成形物及第 二塑膠成形物共同壓合成型為整體之導光板時，係藉由一 成型滾壓輪組將第一塑膠成形物及第二塑膠成形物共同壓 合成型為此導光板。 此另一態樣之其他實施例中，當將第一塑膠成形物及 第二塑膠成形物共同壓合成型為一整體之導光板之後，藉 由另成型滾壓輪組，對第一塑膠成形物遠離第二塑膠成 形物之一面印壓出一微結構圖案。 此另-態樣之其他實施例中，此些光反射内容物之總 體積佔第二塑膠成形物之體積的20%〜50%。 此另-悲樣之其他實施例中，第一塑膠成形物及第二 2膝成^/物之材質係聚丙烯、丙烯腈·苯乙烯_ 丁二稀共聚 對苯—甲酸乙二g旨、聚苯乙烯、聚碳酸醋、聚亞酿 胺或聚甲基丙烯酸甲酯或其組合。201241491 VI. Description of the invention: [Technical field to which the invention pertains] • The tree has a light guide plate with a reflective function, in particular, a kind of guide. [Prior Art] Due to the increasing popularity of liquid crystal displays (LCDs), the design of backlight modules that determine the brightness of liquid crystal displays has become more sophisticated. The backlight module is divided into two types: edge lighting and bottom lighting according to different incident positions of the light source to provide a surface light source required for the liquid crystal display. The conventional edge-lit backlight module comprises a light source, a reflector, a light guide plate, a diffusion sheet and a diaphragm, and the like, wherein the light source is located at a side of the light guide plate, the reflector is located below the light guide plate, and the diffusion sheet and the diaphragm are located above the light guide plate. The diffusion sheet is located between the cymbal and the light guide plate. In this way, when the light of the light source enters the inside of the light guide plate, the light can be sent out to the light guide plate in the direction of the diffusion sheet and the prism lens by the reflection of the reflection plate to form a surface light source with uniform brightness, which provides the brightness required for the liquid crystal display. However, since the reflective sheet is adhered to the light guide plate by the adhesive, the invisible small gap is still maintained between the reflective sheet and the light guide plate, and the total reflection effect of the light still has an improved space. In addition, since the reflective sheet adheres to the light guide plate, the surface light source of the light guide plate will cause uneven light (mura) due to the reflective sheet, thereby reducing the illumination quality. SUMMARY OF THE INVENTION v 201241491, the present invention, for the disclosure of a light guide plate and a backlight module having the light guide plate, the structure of the 2 backlight module, without the need to additionally prepare a separate element with a reflective function, thereby achieving a reduction The purpose of cost. The present disclosure discloses a light guide plate and a backlight module having the light guide plate, which is used for eliminating the shaving, gap, and (4) total light reflection of the light guiding layer. The invention discloses a light guide plate and a backlight module having the light guide plate, which is used for the purpose of eliminating the occurrence of light unevenness (mura), thereby improving the illumination quality. SUMMARY OF THE INVENTION The present invention provides a light guide plate comprising a gel optical layer, a second plastic optical layer, and a plurality of light reflecting contents. The second adhesive optical layer has a first surface and a second surface of (4). The first side has a - structural pattern. The second plastic optical layer is laminated on the second surface. The light reflecting content is distributed inside the second plastic optical layer. From the second! L this aspect - the implementation of the second plastic optical layer without seams and the mouth, the second side of the first plastic optical layer, wherein the second plastic optical layer and the first plastic optical layer does not have Adhesive layer. In another embodiment of this aspect, the second optical layer is laminated to the first plastic optical layer. In other embodiments of this aspect, the plastic optical layer and the second plastic wire layer have the same material. = other forms of the actual film, the __ optical layer and the second plastic optical layer have the same area. / In other embodiments of this aspect, the thickness of the second plastic optical layer of the first plastic optical layer is 3 to 6 times or more. In addition, in other embodiments of the aspect, the second 201241491 of the light-reflecting content is distributed, and the light reflection record of the plastic optical layer is larger than that of the optical layer. In other embodiments, the light-reflecting content The total volume of the object accounts for 20% to 50% of the volume of the second plastic optical layer. In another embodiment of the present invention, the material of the first plastic optical layer and the second plastic optical layer is poly-, (tetra) nitrile styrene-butadiene dilute copolymer, polyethylene terephthalate, and polyethylene terephthalate. Polycarbonate, polymethyleneamine or polymethyl methacrylate or a combination thereof. In other embodiments of this aspect, the light reflective content is a metal powder. Further, the material of the metal powder is silver, copper, gold, nickel, and! Lu, tin, chromium, titanium, iron or a combination thereof. In other embodiments of this aspect, the light reflective content is optical brightener particles. More advanced, optical whitening and sulfuric acid! Thieves titanium dioxide and dioxo combination. The second plastic photonic layer in which the light-reflecting contents are distributed in a plastic embodiment is white, silver or gold. In other real _, the microstructure pattern includes a convex or concave shape. Further, the structure of the microstructure pattern is spherical, "V-shaped, U-shaped, square, rectangular, diamond, fine, Three" wave shape or a combination thereof. In addition, the side-emitting backlight module comprises a back plate, a light source, a cymbal and a diffusion sheet. The light source is located on the light incident surface of the light guide plate. The lens is located on the two sides. The diffusion sheet is located between the guide wire and the sepal. Another aspect of the present invention is to provide a method for fabricating a light guide plate. The package 201241491 includes a step of simultaneously molding a first plastic molded article and a second plastic molded article from a dispensing nozzle. The molded article is filled with a plurality of light-reflecting contents; then, the first plastic molded article and the second plastic molded article are combined into a single light guide plate. In one embodiment of the other aspect, when the first plastic molded article and the second plastic molded article are collectively pressed into a single light guide plate, the first plastic formed product is formed by a forming rolling wheel set. And the second plastic molded article is jointly pressed into the light guide plate. In another embodiment of the other aspect, after the first plastic molded article and the second plastic molded article are jointly pressed into a single light guide plate, the first plastic is formed by separately forming the rolling wheel set. The object is printed on the surface of the second plastic molding to press out a microstructure pattern. In other embodiments of this alternative aspect, the total volume of such light reflecting contents is from 20% to 50% of the volume of the second plastic formed article. In another embodiment, the first plastic molded article and the second two-kneaded material are polypropylene, acrylonitrile styrene-butadiene copolymerized with benzene-formic acid. Polystyrene, polycarbonate, polyalkylene or polymethyl methacrylate or a combination thereof.
物、路、銥、鐵或其組合。 此另一態樣之其他實施例中， 呢例〒，朵;5沿内交你幺水學；^Object, road, sputum, iron or a combination thereof. In other embodiments of this other aspect, the example is 朵, 朵; 5 crosses you in the water; ^
—導光層與一反光層整合為 、或 201241491 一體，使得導光層與反光層之間不再具有空隙，以滿足光 線全反射之目的，如此，由於本發明背光模組不再需要額 外準備具反射功能之獨立元件，本發明背光模組不僅可簡 化背光模組之結構，省下多餘空間，也可達到降低成本之 目的，同時，由於本發明背光模組不再需要額外準備具反 射功能之獨立元件，也可避免產生光不均勻現象（mura)， 進而提升照明品質。 【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暸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1圖、第2圖及第3A〜3B圖所示。第1圖繪 示本發明導光板之製作方法之流程圖。第2圖繪示用以進 行第1圖之製作方法之設備示意圖。第3A圖繪示第2圖 中導光板之區域Ml之局部放大圖。第3B圖繪示第2圖中 導光板之區域M2之局部放大圖。 請參閱第1圖，是提供一種導光板之製作方法，包含 步驟： 步驟（101):同時射出成型一第一塑膠成形物P11及 一第二塑膠成形物P21，其中第二塑膠成形物P21内摻有 多個光反射内容物400 ; 步驟（102):將第一塑膠成形物P11及第二塑膠成形 物P21共同壓合成型為一整體之導光板100 ; 201241491 步驟（103):製作一微結構圖案210至導光板100之 表面；以及 步驟（104):冷卻導光板100。 本發明之一實施例中，上述之製作方法可採用第2圖 之雙射出成型及壓合設備600,雙射出成型及壓合設備600 包含一供料部610、一加壓模頭620及一成型滾壓輪組 630。供料部610包含一第一原料室611、一第二原料室 613、一第一加熱螺桿612、一第二加熱螺桿614。第一加 熱螺桿612接通第一原料室611與加壓模頭620，用以加 熱並輸送原料至加壓模頭620。第二加熱螺桿614接通第 二原料室613與加壓模頭620，用以加熱並輸送原料至加 壓模頭620。成型滾壓輪組630包含相並排之二第一成型 滾壓輪631及一第二成型滾壓輪632及相並排之二托拉輪 633。第二成型滾壓輪632之表面具有一立體圖案。 請同時參閱第1圖、第2圖及第3A圖，當進行步驟 (101):同時射出成型一第一塑膠成形物P11及一第二塑 膠成形物P21，第一原料室611可放置有第一膠料P1。第 二原料室613可放置有第二膠料P2，第二膠料P2内摻有 多個光反射内容物400 ;接著，第一加熱螺桿612加熱第 一膠料P1，並引導第一膠料P1至加壓模頭620内，第二 加熱螺桿614加熱摻有光反射内容物400之第二膠料P2， 並引導第二膠料P2至加壓模頭620内；接著，熔化後的第 一膠料P1與掺有光反射内容物400之第二膠料P2在加壓 模頭620按照厚度進行分流可經由加壓模頭620之一出膠 嘴621而連續地輸出到外界，以射出成型連續之第一塑膠 201241491 成形物P11及掺有多個光反射内容物400之第二塑膠成形 物 P21。 進一步來說’上述之此些第一膠料P1與第二膠料P2 可一致’也不限必須一致，其兩者之材質例如可分別為聚 丙烯（Polypropylene ’PP)’丙烯腈-苯乙烯-丁二烯共聚物 (ABS 樹脂，Acrylonitrile Butadiene Styrene，ABC)、聚 對苯二甲酸乙二酉旨（polyethylene Terephthalate，PET )、聚 苯乙稀（polystyrene，PS )、聚碳酸酯（polycarbonate ’ PC )、 聚亞醯胺（Poly imide )或聚曱基丙稀酸曱自旨（Poly (methyl methacrylate)，PMMA)或其組合。 光反射内容物400可為光學增白劑粒子，光學增白劑 粒子可以顯著地增加塑料的白度，使得分布有光反射内容 物400之第二塑膠成形物P21可呈白色。更進一步地，光 學增白劑粒子例如為二苯乙稀（Eastobrite， C28H18N202)、硫酸鋇（BaS〇4)或二苯乙烯與硫酸鋇之 混合、二氧化鈦與二氧化矽之混合。 此外，其他實施例中，光反射内容物400也可以是金 屬粉末，例如銀、銅、金、錄、鋁、錫、鉻、鈦、鐵或其 組合’使得分布有光反射内容物之第二塑膠成形物P21可 呈銀色或金色。 當然’其他實施例中，第二原料室613也可只放置光 反射内容物4〇〇，以單獨輸出膠狀之成形物。 請同時參閱第1圖、第2圖及第3B圖，當進行上述步 驟（102):將第一塑膠成形物pll及第二塑膠成形物p21 共同歷合成型為一整體之導光板100時，第一塑膠成形物 201241491 P11及摻有多個光反射内容物彻之第二塑膠成形物P21 於=-步驟中可同時通過此二第—成型滾壓輪631之間， 使得此一第一成型滾壓輪631 一方面將第一塑膠成形物 11及第一塑膠成形物P2i共同壓合成型為一整體之導光 板1〇〇卩；^面引導此整體之導光板1GG朝第二成型滾 壓輪632之方向前進。 更詳細而言，藉由左右移動此二第一成型滾壓輪031 之位置彳5周整此二第一成型滚壓輪631間之間隙以控制 欲成型之導光板100的整體厚度。 當進行上述步驟（103):製作一微結構圖案21()至導 光板100之表面時（如第3B圖所示），此整體之導光板刚 =第二成型滾壓輪632與其中—第—成型滾壓輪631之 B日、’由於第-成型滾壓輪631與第二成型滾壓輪㈣間 之空隙有限，第二成型滾壓輪632上之立體圖案便於第一 塑膠成形物P11遠離第二塑膠成形物P21之—面印壓出一 微結構圖案2H)，微結構圖案21()包含多個光學微結構。 然而’製作微結構圖案21〇之方式不僅限於此，其他 :如分為化學飯刻(Etehing)、精密機械刻畫法（*⑽了光 从影法(Stamper)、内部擴散等，或者，也可以印刷方式將 醜印在第-塑膠成形物P11遠離第二塑膠成形物p2i之 :面二此外，微結構圖案210包含外凸或内凹之結構。 ，一步地，微結構圖案210結構的剖面形狀可為球形、 子形二11」字形、正方形、長方形、菱形、精圓形、三角 良形或其組合。然而’微結構圖案2ι〇之結構不僅 限於此。此外，微纟士爐圖安7 、’冓圖案210的分佈密度隨著遠離光源 201241491 而增加。微結構圖案210的分佈密度、分佈方式可隨設計 需要而定，也可採用規則分佈或隨機分佈，在此不予以限 定。 再者，托拉輪633是用以提供拖引導光板100的拉力， 以便加速導光板100被輸送之速度。 當進行上述步驟（104)時，不限冷卻之方式，使得導 光板100具有一定之硬度，並保持立體微結構圖案210之 外形。 請再參閱第3Β圖所示，經上述製作方法所完成之導光 板100大致包含第一塑膠光學層200 (即上述之第一塑膠 成形物Ρ11)、第二塑膠光學層300 (即上述之第二塑膠成 形物Ρ21)。第一塑膠光學層200之外表面具有一微結構圖 案210。第二塑膠光學層300直接地疊合於第一塑膠光學 層200之内表面上。光反射内容物400僅分布於第二塑膠 光學層300内部，更佳地，光反射内容物400僅均勻分布 於第二塑膠光學層300内部。 需強調的是，由於第二塑膠光學層300與第一塑膠光 學層200係於熱熔狀態下所壓合而成，因此，相較於習知 技術，本發明導光板100之第二塑膠光學層300與第一塑 膠光學層200之間不具膠著層及空隙，故，可滿足光線全 反射之目的，進而提高反射光線之性能。 此外，本發明之一實施例，第二塑膠光學層300直接 地疊合於第一塑膠光學層200上，且第一塑膠光學層200 與第二塑膠光學層300具相同之面積。 本發明之其他實施例，第一塑膠光學層200之厚度大 201241491 於第二塑膠光學層300之厚度，例如，第一塑膠光學層2〇〇 之厚度為第二塑膠光學層3〇〇之厚度的3〜6倍以上。 • 本發明之其他實施例，分布有光反射内容物400之第 二塑膠光學層300之光反射係數大於第一塑膠光學層200 之光反射係數。本發明之其他實施例，分布有光反射内容 物400之第二塑膠光學層3〇〇裏白色或、銀色或金色。 本發明之其他實施例，此呰光反射内容物400之總體 積佔第二塑膠光學層300之體積的20%〜50%。 請參閱第3C圖所示，為另/實施例中導光板101局部 示意圖，大致與第3B圖導光板100相同，相同之處不再重 複敍述，差異之處在於可在分別成型上述之第一塑膠光學 層200及第二塑膠光學層300後，藉由黏著層700，使得 第一塑膠光學層200疊合於第二塑膠光學層300上以完成 一整體之導光板101。 請參閱第4圖所示。第4圖繪示侧射型背光模組500 的剖視示意圖。 經上述製作方法所完成之導光板100可應用於一側射 型背光模組500中。此側射型背光模組500包含所述之導 光板100、一背板510、一光源520、一稜鏡片540及一擴 散片530。導光板100位於背板510上。光源520位於導 光板100之侧面（即入光面211 )。稜鏡片540位於導光板 100(如第3B圖所示）之一頂面（即出光面212)。擴散片530 位於導光板100與稜鏡片540之間。 如此，當光源520的光線Ll、L2經入光面211進入導 光板100時，光源520 —部份之光線L1經第一塑膠光學層 12 201241491 200之引導，而直接朝出光面212之方向被送出導光板 • 100，並且受到微結構圖案210之光擴散作用，以形成輝度 . 均勻的面光源，提供所需之亮度；光源520其他部份之光 線L2經第二塑膠光學層300之反射後，可被改向後朝出光 面212之方向被送出導光板1〇〇，並且受到微結構圖案210 之光擴散作用。 然而，上述導光板101亦適用於此側射型背光模組500 中，但在此不加以贅述。 由於本發明將第二塑膠光學層與第一塑膠光學層整合 為一體，且第二塑膠光學層具有光反射内容物，使得第二 塑膠光學層與第一塑膠光學層之間不再具有空隙，便可滿 足光線全反射之目的。如此，本發明背光模組便不再需要 額外準備具反射功能之反射元件，以便簡化背光模組之結 構，省下多餘空間，也可達到降低成本之目的，同時，由 於本發明背光模組不再需要額外準備具反射功能之獨立元 件，也可避免產生光不均勻現象（mura)，進而提升照明品 質。 本發明所揭露如上之各實施例中，並非用以限定本發 明，任何熟習此技藝者，在不脫離本發明之精神和範圍内， 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 201241491 能更明顯易懂，所附圖式之詳細說明如下： 第1圖繪示本發明導光板之製作方法之流程圖。 第2圖繪示用以進行第1圖之製作方法之設備示意圖。 第3A圖繪示第2圖中導光板之區域Ml之局部放大 圖。 第3B圖繪示第2圖中導光板之區域M2之局部示意 圖。 第3C圖繪示導光板於其他實施例之局部示意圖。 第4圖繪示側射型背光模組的剖視示意圖。 520 :光源 530 :擴散片 540 :稜鏡片 600 :雙射出成型及壓合設備 610 :供料部 【主要元件符號說明】 100、101 :導光板 200 :第一塑膠光學層 210 :微結構圖案 211 :入光面 212 :出光面 300 :第二塑膠光學層 400 :光反射内容物 500 :側射型背光模組 510 :背板 613 :第二原料室 614 :第二加熱螺桿 620 :加壓模頭 621 :出膠嘴 630 :成型滾壓輪組 631 :第一成型滾壓輪 632 :第二成型滾壓輪 633 :托拉輪 P1 :第一膠料 P11 :第一塑膠成形物 P2 :第二膠料 P21 :第一塑膠成形物 Ml、M2 :區域 LI、L2 :光線 14 201241491 611 :第一原料室 101-104 ··步驟 ' 612:第一加熱螺桿 15- The light guiding layer is integrated with a light reflecting layer, or 201241491, so that there is no gap between the light guiding layer and the light reflecting layer to meet the purpose of total light reflection, so that the backlight module of the present invention no longer needs additional preparation The independent component with reflective function, the backlight module of the invention not only simplifies the structure of the backlight module, saves unnecessary space, but also achieves the purpose of reducing cost, and at the same time, since the backlight module of the invention no longer needs to prepare additional reflection function The separate components also avoid the occurrence of light unimatism (mura), which in turn improves the quality of the illumination. 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 Figure 1, Figure 2 and Figures 3A to 3B. Fig. 1 is a flow chart showing a method of fabricating a light guide plate of the present invention. Fig. 2 is a schematic view showing the apparatus for carrying out the manufacturing method of Fig. 1. Fig. 3A is a partially enlarged view showing a region M1 of the light guide plate in Fig. 2. Fig. 3B is a partially enlarged view showing a region M2 of the light guide plate in Fig. 2. Referring to FIG. 1 , a method for fabricating a light guide plate is provided, comprising the steps of: Step (101): simultaneously molding a first plastic molded product P11 and a second plastic molded product P21, wherein the second plastic molded product P21 is formed. A plurality of light-reflecting contents 400 are mixed; Step (102): the first plastic molded article P11 and the second plastic molded article P21 are combined into a single light guide plate 100; 201241491 Step (103): Making a micro The structural pattern 210 is to the surface of the light guide plate 100; and the step (104): cooling the light guide plate 100. In an embodiment of the present invention, the above-mentioned manufacturing method can adopt the double injection molding and pressing device 600 of FIG. 2, and the double injection molding and pressing device 600 includes a feeding portion 610, a pressing die 620 and a Forming the rolling wheel set 630. The feeding portion 610 includes a first raw material chamber 611, a second raw material chamber 613, a first heating screw 612, and a second heating screw 614. The first heating screw 612 turns on the first raw material chamber 611 and the pressurizing die 620 for heating and conveying the raw material to the pressurizing die 620. The second heating screw 614 turns on the second material chamber 613 and the pressurizing die 620 for heating and conveying the material to the pressing die 620. The forming rolling wheel set 630 includes two first forming rolling rolls 631 and a second forming rolling wheel 632 and two side-by-side pulling rollers 633. The surface of the second forming rolling wheel 632 has a three-dimensional pattern. Please refer to FIG. 1 , FIG. 2 and FIG. 3A simultaneously. When step (101) is performed: a first plastic molded product P11 and a second plastic molded product P21 are simultaneously formed and molded, and the first raw material chamber 611 can be placed. A compound P1. The second material chamber 613 can be placed with a second rubber P2, and the second rubber P2 is doped with a plurality of light reflecting contents 400; then, the first heating screw 612 heats the first rubber P1 and guides the first rubber P1 to the pressurizing die 620, the second heating screw 614 heats the second compound P2 doped with the light reflecting content 400, and guides the second rubber P2 into the pressing die 620; then, after melting A compound P1 and a second compound P2 doped with the light-reflecting content 400 are shunted according to the thickness in the press die 620, and can be continuously output to the outside through a nozzle 621 of the press die 620 to be ejected. The first plastic 201241491 is formed into a continuous shape and the second plastic molded product P21 is doped with a plurality of light-reflecting contents 400. Further, the above-mentioned first rubber P1 and the second rubber P2 may be identical or not, and the materials of the two may be, for example, polypropylene (PP) acrylonitrile-styrene. -Butadiene copolymer (ABS resin, Acrylonitrile Butadiene Styrene, ABC), polyethylene terephthalate (PET), polystyrene (PS), polycarbonate (polycarbonate ' PC ), Poly imide or Poly (methyl methacrylate), or a combination thereof. The light reflective content 400 can be an optical brightener particle, and the optical brightener particles can significantly increase the whiteness of the plastic such that the second plastic formed P21 having the light reflective content 400 can be white. Further, the optical brightener particles are, for example, Eastobrite (C28H18N202), barium sulfate (BaS〇4) or a mixture of stilbene and barium sulfate, and a mixture of titanium dioxide and cerium oxide. In addition, in other embodiments, the light reflective content 400 may also be a metal powder, such as silver, copper, gold, aluminum, tin, chromium, titanium, iron, or a combination thereof, such that the second portion of the light reflective content is distributed. The plastic molded article P21 can be made of silver or gold. Of course, in other embodiments, the second material chamber 613 may also only place the light reflecting contents 4 以 to separately output the gel shaped product. Please refer to FIG. 1 , FIG. 2 and FIG. 3B simultaneously. When the above step (102) is performed: when the first plastic molded product p11 and the second plastic molded product p21 are combined into a single light guide plate 100, The first plastic molded product 201241491 P11 and the second plastic molded product P21 doped with a plurality of light reflecting contents can pass through the two first forming rolling wheels 631 at the same time in the step of -, making the first forming On the one hand, the first plastic molded object 11 and the first plastic molded product P2i are combined into a single light guide plate 1; the surface guides the whole light guide plate 1GG toward the second molding roll. The direction of the wheel 632 proceeds. More specifically, the gap between the two first forming rolling rolls 631 is controlled by moving the positions of the two first forming rolling rolls 031 left and right to control the overall thickness of the light guiding plate 100 to be formed. When the above step (103) is performed: when a microstructure pattern 21() is formed on the surface of the light guide plate 100 (as shown in FIG. 3B), the entire light guide plate just = the second molding roll wheel 632 and therein - - B of the forming rolling wheel 631, 'Because the gap between the first forming rolling wheel 631 and the second forming rolling wheel (4) is limited, the three-dimensional pattern on the second forming rolling wheel 632 facilitates the first plastic formed part P11 A microstructure pattern 2H) is pressed away from the second plastic molding P21, and the microstructure pattern 21() comprises a plurality of optical microstructures. However, the method of making the microstructure pattern 21 is not limited to this. Others: for example, it is divided into chemical cooking (Etehing), precision mechanical characterization (* (10) light filming (Stamper), internal diffusion, etc., or printing The method is ugly printed on the first plastic molded article P11 away from the second plastic molded object p2i: face two. Further, the microstructured pattern 210 comprises a convex or concave structure. In one step, the sectional shape of the microstructured pattern 210 structure can be It is a spherical shape, a sub-shape of two 11" shapes, a square, a rectangle, a diamond shape, a fine circle, a triangle shape, or a combination thereof. However, the structure of the 'micro structure pattern 2 〇 不仅 is not limited to this. In addition, the micro gentleman's figure 安, 7, The distribution density of the 冓 pattern 210 increases with the distance from the light source 201241491. The distribution density and distribution pattern of the microstructure pattern 210 may be determined according to design requirements, and may be a regular distribution or a random distribution, which is not limited herein. The pulling roller 633 is configured to provide a pulling force for guiding the light guiding plate 100 to accelerate the speed at which the light guiding plate 100 is conveyed. When the above step (104) is performed, the cooling is not limited, so that the light guiding is performed. 100 has a certain hardness and maintains the shape of the three-dimensional microstructure pattern 210. Please refer to the third drawing, the light guide plate 100 completed by the above manufacturing method substantially comprises the first plastic optical layer 200 (ie, the first plastic mentioned above) a molded object 11), a second plastic optical layer 300 (ie, the second plastic molded object 21). The outer surface of the first plastic optical layer 200 has a microstructure pattern 210. The second plastic optical layer 300 is directly laminated on the second plastic optical layer 300. The inner surface of the first plastic optical layer 200. The light reflective content 400 is only distributed inside the second plastic optical layer 300. More preferably, the light reflective content 400 is evenly distributed inside the second plastic optical layer 300. Because the second plastic optical layer 300 and the first plastic optical layer 200 are pressed together in a hot-melt state, the second plastic optical layer 300 of the light guide plate 100 of the present invention is compared with the prior art. There is no adhesive layer and void between the first plastic optical layer 200, so that the purpose of total light reflection can be satisfied, thereby improving the performance of reflected light. In addition, in one embodiment of the present invention, the second plastic optical layer 300 is directly superposed on the first plastic optical layer 200, and the first plastic optical layer 200 and the second plastic optical layer 300 have the same area. In other embodiments of the present invention, the thickness of the first plastic optical layer 200 is large 201241491 The thickness of the second plastic optical layer 300, for example, the thickness of the first plastic optical layer 2〇〇 is 3 to 6 times or more the thickness of the second plastic optical layer 3〇〇. • Other embodiments of the present invention are distributed The light reflection coefficient of the second plastic optical layer 300 of the light reflective content 400 is greater than the light reflection coefficient of the first plastic optical layer 200. In other embodiments of the present invention, the second plastic optical layer 3 of the light reflective content 400 is distributed. It is white or silver or gold. In other embodiments of the invention, the total amount of the matte reflective content 400 is between 20% and 50% of the volume of the second plastic optical layer 300. Referring to FIG. 3C, a partial schematic view of the light guide plate 101 in another embodiment is substantially the same as the light guide plate 100 of FIG. 3B, and the same points are not repeatedly described. The difference is that the first one can be formed separately. After the plastic optical layer 200 and the second plastic optical layer 300, the first plastic optical layer 200 is superposed on the second plastic optical layer 300 by the adhesive layer 700 to complete an integral light guide plate 101. Please refer to Figure 4. FIG. 4 is a cross-sectional view showing the side-lit backlight module 500. The light guide plate 100 completed by the above manufacturing method can be applied to the one-side shot type backlight module 500. The side-lit backlight module 500 includes the light guide plate 100, a back plate 510, a light source 520, a gusset 540, and a diffusion sheet 530. The light guide plate 100 is located on the back plate 510. The light source 520 is located on the side of the light guide plate 100 (i.e., the light incident surface 211). The cymbal 540 is located on one of the top surfaces of the light guide plate 100 (as shown in FIG. 3B) (ie, the light exit surface 212). The diffusion sheet 530 is located between the light guide plate 100 and the cymbal 540. Thus, when the light rays L1, L2 of the light source 520 enter the light guide plate 100 through the light incident surface 211, the light L1 of the light source 520 is guided by the first plastic optical layer 12 201241491 200, and is directly directed toward the light exit surface 212. The light guide plate 100 is sent out and is diffused by the light of the microstructure pattern 210 to form a brightness. The uniform surface light source provides the required brightness; the light L2 of the other portion of the light source 520 is reflected by the second plastic optical layer 300. It can be redirected and sent out of the light guide plate 1 in the direction of the light exit surface 212, and is subjected to light diffusion by the microstructure pattern 210. However, the above-mentioned light guide plate 101 is also applicable to the side-lit backlight module 500, but will not be described herein. Since the second plastic optical layer is integrated with the first plastic optical layer, and the second plastic optical layer has a light reflective content, the second plastic optical layer and the first plastic optical layer no longer have a gap. It can meet the purpose of total light reflection. Therefore, the backlight module of the present invention no longer needs to additionally prepare a reflective component with a reflective function, so as to simplify the structure of the backlight module, save unnecessary space, and achieve the purpose of reducing cost, and at the same time, the backlight module of the present invention does not It is necessary to additionally prepare separate components with reflection function, and also avoid the occurrence of light unevenness (mura), thereby improving the illumination quality. The present invention is not limited to the embodiments of the present invention, and various modifications and refinements may be made without departing from the spirit and scope of the present invention. This is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention 201241491 more apparent, the detailed description of the drawings is as follows: FIG. 1 is a diagram showing a method of manufacturing a light guide plate of the present invention. Flow chart. FIG. 2 is a schematic diagram of an apparatus for performing the manufacturing method of FIG. 1. Fig. 3A is a partially enlarged view showing a region M1 of the light guide plate in Fig. 2. Fig. 3B is a partial schematic view showing a region M2 of the light guide plate in Fig. 2. FIG. 3C is a partial schematic view showing the light guide plate in other embodiments. FIG. 4 is a cross-sectional view showing the side-emitting backlight module. 520: light source 530: diffusion sheet 540: cymbal sheet 600: double injection molding and pressing apparatus 610: supply part [main element symbol description] 100, 101: light guide plate 200: first plastic optical layer 210: microstructure pattern 211 The light-incident surface 212: the light-emitting surface 300: the second plastic optical layer 400: the light-reflecting content 500: the side-emitting backlight module 510: the back plate 613: the second material chamber 614: the second heating screw 620: the pressure mold Head 621: dispensing nozzle 630: forming rolling wheel set 631: first forming rolling wheel 632: second forming rolling wheel 633: pulling roller P1: first rubber P11: first plastic forming material P2: Two rubber P21: first plastic molded product M1, M2: region LI, L2: light 14 201241491 611: first raw material chamber 101-104 · step '612: first heating screw 15