201122581 六、發明說明： 【發明所屬之技術領域】 本發明係關於-種導光板，特別是關於—種具 配置之導光板，且可運用於背光模組及液晶顯示裝置卜 【先前技術】 近年來，由於顯不技術的發展，傳統的陰極射線顯示 裝置逐漸被液晶顯示裝置所取代。—般液晶顯示裝置主要 係由一液晶顯示面板（丨iqujd crystal display _el)與—背 光模組（baddigh—e)組合而成。其中，背光模組用 以提供均勻的面光源，光線經由液晶顯示面板的調製、，再 配合上、下偏光片就能產生影像。 其中，依光源設置的位置，背光模組可分為直下式 (direct type )以及側光式（edge |jght type )。在側光式^ 光模組中，由於光源設置於背光模組的側邊，故需藉由光 學板來導光而產生均勻的面光源，此種光學板稱之為導光 板（light guide plate)。 請參照圖丨所示，一種習知的導光板丨係呈楔形狀， 並具有一入光側面Π、一反射面〗2及一出光面]3。光源 j圖中未顯示）係鄰設於入光側面u並發射光線進入導 光板〗内，光線藉由反射面】2反射而朝出光面13射出。 由於光線自入光側面11進入導光板丨後，在導光板^ 内谷易進打全反射，故需藉由網點M的設置來破壞全反 射而使光線射出導光板]。複數個網點14係設置在導光板 201122581 的反射面.1.2 ’吾光線射到導光才反]之網點】4時，合產 生散射而破壞統的全反射現象，而使部分㈣折射㈣ 光板1之出光面13。 為產生均勻面光源，網點]4的設置密度亦隨著與光 源之距離而有所不同（沿圖】之箭頭方向由疏變密）。離 t光側面11較近的區域，由於較靠近光源，其光線強度 較強，故網.點14在此區域的密度較小，以使射出導光板 的光線較少；而離入光側面u較遠的區域，由於遠離光 源，其光線強度較弱，故網點14在此區域的密度較大， 則吏射出導光板1的光線較多，藉此以達到肖勻的面光源。 習知的網點設計是用以破壞光線於導光板中的全反 .身^而使光線由導光板中射出。但此種設計，往往出光效 I車乂差，無法達到所需要的亮度，以致需以價格昂貴的光 學膜片、或是增加光源的能量來補足背光模組的亮度。 "因此，如何提供一種導光板以減少光線在導光板内的 0 消耗，實為當前重要課題之一。 【發明内容】 北有鑑於上述課題，本發明之目的為提供—種導光板、 二光核組、液晶顯示裝置，其中的導光板能夠提供 売度’並降低成本。 、 本發明之-種導光板包含_本體以及複數個 體具有至少-入光側面以及-第-表面與-相對：該； 表面设置之第二表面，其中第一表面為粗糙面。該等網 201122581 點設置於第一表面，且該等網點自該入光侧面至相對之該 另一入光側面之密度係由密至疏。 本發明之一種背光模組包含一光源；以及一導光板。 導光板係包含一本體及複數個網點。本體具有一入光側面 以及一第一表面與一相對於該第一表面設置之第二表 面，光源鄰設於入光側面，第一表面為粗糙面。網點設置 於第一表面，且該等網點於靠近入光側面之密度大於遠離 入光侧面之密度。 本發明之一種液晶顯示裝置包含一液晶顯示面板以 及一背光模組，其與液晶顯示面板相對設置。背光模組包 含一光源及一導光板。導光板包含一本體及複數個網點。 本體具有一入光側面以及一第一表面與一相對於該第一 表面設置之第二表面，光源鄰設於入光側面，第一表面為 粗糙面。網點設置於第一表面，且該等網點於靠近入光側 面之密度大於遠離入光侧面之密度。 導光板之粗糙面上設置複數個網點後，該等網點會部 分平坦化粗糙面，進而增加有網點設置的區域之光線於導 光板内進行全反射的程度。因此，藉由網點設置的密度， 可以調整光線於導光板内部全反射的量。於本發明中，網 點於靠近入光侧面之密度大於遠離入光側面之密度，故靠 近入光侧面的區域之光線全反射較多，而遠離入光側面的 區域之光線全反射較少，進而達到均勻的出光。於是，藉 由粗糙面與網點的配合設置，可減少光線在導光板内的損 耗並增加出光效率，甚至可降低需採購其他光學膜片的成 201122581 本。 【實施方式】 曾、，乂下將參,％相關圖式’說明本發明較佳實施例之一種 ‘光板《光核組及液晶顯示裝置，其中相同的元件將以 相同的符號加以說明。 第一實施例 πϋ2及@3所其中圖2為本實施例之導光 板2的立體示意圖，圖3為導光板2的剖面示意圖。本實 I不並限制導光板2的應用範圍，其可應用於—般的背 ^組’例如是照明裝置、廣告燈箱、醫療用燈箱、或液 晶顯不裝置的背光模組。 ‘光板2包含一本體2】及複數個網點22。本體2丨具 ，广入光侧面’於本發明之實施例中其中-入光侧面 係為—入光側面2Π以及—第_表面212與一相對於該第 表面而a又置之第二表面213。本體2ι可例如為長方形、 或楔形或其他幾何形狀，於此，本體21係以長方形為例。 :光源L可鄰設於人光侧面211，光源£所發出之光線係 2光側面2U進入導光板2。第一表面犯與第二表面 之至少其中之一可作為出光面，於此，係以第一表面 212作為出光面為例，而第二表面2]3為_底面。 第一表面212為粗糖面，其可利用喷砂、或研磨、或 或雕f而形成，於此係以具有複數個微結構以構成 心面’吕亥等微結構可例如包含金字塔型、或塔型、或角 201122581 錐型、或微透鏡、或其組合。當然，該等微結構亦可藉由 再研磨而為不規則形狀之組合’或者該等微結構可經=滚 輪設計而形成波浪狀的微結構或不規則狀的微結構。本^ 施例中，第-表面212係以不規則形狀之粗链面為例，= ^粗糙度（中心線平均粗糙度Ra)係以介於Q.5〜2〇_為 例0 網點22設置於第一表面212 ’且該等網點22於 入光側面21]之密度大於遠離入光側面2u之 疋5 ，第一表面212單位面積内的網點22分布，在土斤 入光側面2】】之數量會大於遠離入光側面2丨丨之數旦罪= ’導光板2上之該等網點22自入光側面211 至相對之另-入光側面2】5之密度係由密至疏。在 例中’有網點22的區域會使得粗链面的區 ί:一咐板2之本體21内全反射的機Γ =域則可藉由粗糙面而造成光線於導光：2 近=反射的破壞。而’本實施例之網點U於靠 光線射至土、斤之被度大於遠離入光側面川之密度，故 而光線射=光側面一區域時，進行全反射較多； 壞，故射出導則面21丨的區域時，全反射受到破 巧I a：’ $光板2之太辦9〗於之 由適當分配網點22於第：面：夕：:此-來’即可藉 出導光板20^ 表面212的分佈，使得光線射 反2日^·可形成均勻的麻 22可為紫外井狀十a 原在本只杬例中，網點 化。網點或熱固化膠，分別藉由紫外光或熱而固 '、可包含-填充物’填充物可包含氧化鈦 201122581 (Τι〇2)及/或氧化矽（Si〇2)及/或聚甲基丙烯酸曱酯 (PMMA)粒子。 第二實施例 。月蒼,日、?、圖4所不’其係為本實施例之導光板2a的立體 不思圖。與第一實施例之導光板2不同的是，導光板2a 之弟表面213a具有至少—微結構（）ms， 於此係以複數個微結構為例。微結構MS可包含棱鏡 (pnSm)、V 形溝槽（V-cut)、或微透鏡（micro_|ens)、或 雙凸透叙（lenticu丨ar)或其組合，於此係以相互緊靠平行 • j列的雙凸透鏡為例。另外，該等微結構MS除了相互緊 靠平行排列之外，也可間隔排列，如圖7A所示，其係顯 -不第二表面213c之微結構Ms為複數個微透鏡間隔設置， 圖7B則顯示第二表面213d之微結構· & v形溝槽間隔 設置。 請再參照圖4所示，微結構⑽具有一長軸方向，長 • 4,方向與入光側面211 (或光源L)之一長軸方向垂直， '精此會有將光線集中於垂直視角的功效。另外，圖5及圖 --6顯示另—態樣之導光板2 b，其微結構M §具有一長軸方 向’而長軸方向與入光側面211 (或光源L)之一長軸方 向平仃，藉由微結構MS ,可將光線作光學特性的改變， 並減少光線在導光板2a〜2d内的損耗，並提升出光效率。 以下，請參照相關圖示，以說明本發明一種導光板之 製造方法之實施例。 請參照圖8所示，本發明較佳實施例之導光板製造方 201122581 法係〇 S步驟S0丨及s〇2。請同時參照圖2及圖3所示， …冲S()1係形成―粗糖面於-導光板2之本體21之-第 辛 2且本體2丨更具有至少一入光側面。步驟s〇2 係設置複數個網點22於第一表面2】2上’且該等網點^ 自。亥人光側面至相對之該另一入光側面之密度係由密 至&由方、步.咏S01及S02所包含之結構部分的技術特徵 已於上述實施例詳述，故於此不再贅述。在本實施例中’ 粗链面可藉由噴砂、或研磨、或滾輪、或雕刻而形成。該 等網點22可藉由印刷、或喷墨、或塗佈而形成。 請參照圖5及圖6所示，導光板之製造方法可更包含 形成至少一微結構MS於本體21b之一第二表面21儿上， 第一表面2〗3b與第一表面212相對設置。在本實施例中， 微結構MS可藉由滾壓而形成。 請參照圖9所示，本發明較佳實施例之一種背光模組 4係包含一光源41以及—導光板3。在本實施例中，背光 模組4可作為一般照明裝置、燈箱或背光源，於此係以作 為背光源為例。光源41可為任意發光體，例如熱陰極螢 光燈（HCFL)、或冷陰極螢光燈（CCFL)、或發光二極體 (LbD )，於此係以冷陰極螢光燈為例。光源41係鄰設於 導光板3的入光侧面3U。導光板3的技術特徵已於上述 實施例敘明，故於此不再贅述。另外，背光模組4可更包 含一反射罩42，其係包覆光源4丨之至少部分周緣，用以 反射光源4丨之光線’以導引光源4丨的光線入射導光板3。 請參照圖10所示，本發明較佳實施例之一種液晶顯 201122581 不裝置6係包含-液晶顯示面板5以及一背光模址4 光板3係位於背光模組4。液晶顯示面板5係*^ 4相對設置。背光模組4係作為背光模組，並可更 反射片43鄰設於導光板3之第二表面3Π，用以將 反射回導光板3内。背光模組4可更包含_光㈣2 44，其係鄰設於導光板3之第—表面312，用以調整: 之光學性質，光學膜片組44可包含上擴散^ ^ 增亮膜、或其組合等。 ^文片、201122581 VI. Description of the Invention: [Technical Field] The present invention relates to a light guide plate, and more particularly to a light guide plate having a configuration, and can be applied to a backlight module and a liquid crystal display device. [Prior Art] Since the development of the technology, the conventional cathode ray display device has been gradually replaced by the liquid crystal display device. The liquid crystal display device is mainly composed of a liquid crystal display panel (丨iqujd crystal display _el) and a backlight module (baddigh-e). The backlight module is used to provide a uniform surface light source, and the light is modulated by the liquid crystal display panel, and then the upper and lower polarizers can be used to generate images. Among them, the backlight module can be divided into a direct type and an edge |jght type depending on the position set by the light source. In the edge-light type optical module, since the light source is disposed on the side of the backlight module, a uniform surface light source is generated by the optical plate to guide the light, and the optical plate is called a light guide plate. ). Referring to FIG. ,, a conventional light guide plate has a wedge shape and has a light entrance side Π, a reflection surface 〖2, and a light exit surface ′′. The light source j (not shown) is disposed adjacent to the light incident side u and emits light into the light guide plate, and the light is reflected by the reflective surface 2 toward the light exit surface 13. Since the light enters the light guide plate from the light incident side 11 and is totally reflected in the inner wall of the light guide plate, it is necessary to destroy the total reflection by the setting of the mesh point M to cause the light to exit the light guide plate]. A plurality of dots 14 are arranged on the reflecting surface of the light guide plate 201122581. 1.2 'When the light hits the light guide, the dot is 4', the scattering occurs to destroy the total reflection phenomenon, and the partial (four) is refracted (four) light plate 1 Light exit surface 13. In order to produce a uniform surface light source, the set density of the dots 4 is also different depending on the distance from the light source (the direction of the arrow in the figure is reduced). The area closer to the t-light side 11 has a stronger light intensity due to its closer proximity to the light source, so the density of the spot 14 in this area is small so that less light is emitted from the light guide plate; In the farther area, the light intensity is weaker because it is far away from the light source. Therefore, the density of the dot 14 in this area is large, and the light emitted from the light guide plate 1 is large, thereby achieving the surface light source of the uniformity. The conventional dot design is to destroy the light in the light guide plate and to emit light from the light guide plate. However, in this design, the light efficiency is often poor, and the required brightness cannot be achieved, so that the expensive optical film or the energy of the light source needs to be used to supplement the brightness of the backlight module. " Therefore, how to provide a light guide plate to reduce the 0 consumption of light in the light guide plate is one of the current important topics. SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a light guide plate, a two-photon core group, and a liquid crystal display device in which a light guide plate can provide a degree of twist and reduce cost. The light guide plate of the present invention comprises a body and a plurality of bodies having at least a light-incident side and a --surface-opposite: the second surface of the surface, wherein the first surface is a rough surface. The dots 201122581 are disposed on the first surface, and the density of the dots from the light incident side to the opposite light incident side is dense to sparse. A backlight module of the present invention comprises a light source; and a light guide plate. The light guide plate comprises a body and a plurality of dots. The body has a light incident side surface and a first surface and a second surface disposed opposite to the first surface. The light source is adjacent to the light incident side surface, and the first surface is a rough surface. The dots are disposed on the first surface, and the density of the dots near the light incident side is greater than the density away from the light incident side. A liquid crystal display device of the present invention comprises a liquid crystal display panel and a backlight module disposed opposite to the liquid crystal display panel. The backlight module includes a light source and a light guide plate. The light guide plate comprises a body and a plurality of dots. The body has a light incident side surface and a first surface and a second surface disposed opposite to the first surface. The light source is adjacent to the light incident side surface, and the first surface is a rough surface. The dots are disposed on the first surface, and the density of the dots near the light incident side is greater than the density away from the light incident side. After a plurality of dots are arranged on the rough surface of the light guide plate, the dots will partially flatten the rough surface, thereby increasing the degree of total reflection of the light in the region where the dots are disposed in the light guide plate. Therefore, by the density set by the dots, the amount of total reflection of light inside the light guide plate can be adjusted. In the present invention, the density of the mesh dots near the light incident side is greater than the density of the light incident side, so that the light near the light incident side surface is totally reflected more, and the light far from the light incident side region is less totally reflected. Achieve uniform light output. Therefore, by the combination of the rough surface and the dot, the loss of light in the light guide plate can be reduced and the light extraction efficiency can be increased, and even the other optical film to be purchased can be reduced. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been described with reference to the accompanying drawings, wherein the same elements are designated by the same reference numerals. First Embodiment π ϋ 2 and @ 3 are shown in Fig. 2 as a schematic perspective view of the light guide plate 2 of the present embodiment, and Fig. 3 is a schematic cross-sectional view of the light guide plate 2. The present invention does not limit the application range of the light guide plate 2, and can be applied to a general backlight unit such as a lighting device, an advertising light box, a medical light box, or a backlight module of a liquid crystal display device. The 'light panel 2 includes a body 2' and a plurality of dots 22. The body 2 cooker, the wide-light side ′ in the embodiment of the invention wherein the light-incident side is the light-incident side 2Π and the first surface 212 and a second surface opposite to the first surface 213. The body 2ι may be, for example, a rectangle, a wedge, or other geometric shape. Here, the body 21 is exemplified by a rectangle. The light source L can be disposed adjacent to the human light side surface 211, and the light source 2 light side 2U enters the light guide plate 2. At least one of the first surface and the second surface may serve as a light exiting surface, wherein the first surface 212 is taken as the light exiting surface, and the second surface 2]3 is the bottom surface. The first surface 212 is a rough sugar surface, which may be formed by sand blasting, or grinding, or or engraving, wherein the microstructure having a plurality of microstructures to form a heart surface, such as Lu Hai, may include, for example, a pyramid type, or Tower type, or angle 201122581 cone type, or microlens, or a combination thereof. Of course, the microstructures may also be a combination of irregular shapes by re-grinding or the microstructures may be formed into a wavy microstructure or an irregular microstructure via a roller design. In the embodiment, the first surface 212 is exemplified by a thick-chain surface of an irregular shape, and the roughness (center line average roughness Ra) is between Q.5 and 2〇_ as an example. The density of the first surface 212' and the light-emitting side surface 21 is greater than the distance from the light-incident side surface 2u, and the dot 22 of the first surface 212 is distributed in the unit area of the first surface 212. 】 The number will be greater than the distance from the side of the light entering the 2nd sin = 'the density of the dots 22 on the light guide plate 2 from the light incident side 211 to the opposite other light entrance side 2】 5 is dense to thin . In the example, the area with the mesh point 22 causes the area of the thick chain surface to be totally reflected in the body 21 of the seesaw 2 to cause light to be guided by the rough surface: 2 near = reflection The destruction. However, the dot U of the present embodiment is directed to the soil by the light, and the degree of the charge is greater than the density of the side of the light entering the light. Therefore, when the light is reflected on the side of the light, the total reflection is more; When the area is 21丨, the total reflection is broken. I a: '$光板2太办9〗 by appropriate distribution of the dot 22 at the first: face: eve:: this - come 'can lend the light guide plate 20 ^ The distribution of the surface 212, so that the light is shot against the 2nd ^· can form a uniform hemp 22 can be an ultraviolet well-like ten a original in this example, dot. Dot or thermosetting glue, which is solidified by ultraviolet light or heat, respectively, may include-filler' filler may include titanium oxide 201122581 (Τι〇2) and/or yttrium oxide (Si〇2) and/or poly Acetyl acrylate (PMMA) particles. Second embodiment. Luna, Sun, ?, and Fig. 4 are not stereoscopic views of the light guide plate 2a of the present embodiment. Different from the light guide plate 2 of the first embodiment, the younger surface 213a of the light guide plate 2a has at least - microstructure () ms, and a plurality of microstructures are exemplified here. The microstructure MS may comprise a prism (pnSm), a V-cut, or a microlens (micro_|ens), or a lenticular 丨ar, or a combination thereof, in this case Parallel • J-column lenticular lens as an example. In addition, the microstructures MS may be arranged at intervals except that they are arranged in parallel with each other. As shown in FIG. 7A, the microstructure Ms of the second surface 213c is set to a plurality of microlens intervals, FIG. 7B. Then, the microstructure of the second surface 213d is displayed. Referring again to FIG. 4, the microstructure (10) has a long axis direction, length 4, and the direction is perpendicular to the long axis direction of one of the light incident sides 211 (or the light source L). The effect. In addition, FIG. 5 and FIG. -6 show another embodiment of the light guide plate 2 b having a microstructure M § having a long axis direction and a long axis direction and a long axis direction of the light incident side surface 211 (or the light source L). By means of the microstructure MS, the light can be changed in optical characteristics, and the loss of light in the light guide plates 2a to 2d can be reduced, and the light efficiency can be improved. Hereinafter, please refer to the related drawings to explain an embodiment of a method of manufacturing a light guide plate of the present invention. Referring to FIG. 8, the light guide plate manufacturing method of the preferred embodiment of the present invention is 201122581, and the system is 〇 S steps S0丨 and s〇2. Referring to FIG. 2 and FIG. 3 at the same time, the S()1 is formed to form a coarse sugar surface on the body 21 of the light guide plate 2, and the body 2 is further provided with at least one light incident side. Step s 〇 2 sets a plurality of dots 22 on the first surface 2] 2 and the dots are from. The technical characteristics of the structure from the side of the light to the other side of the light incident from the side of the light incident to the other side of the light incident are as described in detail in the above embodiments. Let me repeat. In the present embodiment, the thick chain surface can be formed by sand blasting, or grinding, or rolling, or engraving. The dots 22 can be formed by printing, or by ink jet, or coating. Referring to FIG. 5 and FIG. 6, the manufacturing method of the light guide plate may further include forming at least one microstructure MS on a second surface 21 of the body 21b, and the first surface 2 3b is disposed opposite to the first surface 212. In this embodiment, the microstructure MS can be formed by rolling. Referring to FIG. 9, a backlight module 4 according to a preferred embodiment of the present invention includes a light source 41 and a light guide plate 3. In this embodiment, the backlight module 4 can be used as a general illumination device, a light box or a backlight, and is taken as a backlight as an example. The light source 41 may be any illuminant such as a hot cathode fluorescent lamp (HCFL), a cold cathode fluorescent lamp (CCFL), or a light emitting diode (LbD), and a cold cathode fluorescent lamp is exemplified here. The light source 41 is disposed adjacent to the light incident side surface 3U of the light guide plate 3. The technical features of the light guide plate 3 have been described in the above embodiments, and thus will not be described again. In addition, the backlight module 4 may further include a reflector cover 42 covering at least a portion of the periphery of the light source 4 to reflect the light of the light source 4' to guide the light from the light source 4 to enter the light guide plate 3. Referring to FIG. 10, a liquid crystal display 201122581 is not included in the preferred embodiment of the present invention. The system 6 includes a liquid crystal display panel 5 and a backlight module 4, and the light panel 3 is located in the backlight module 4. The liquid crystal display panel 5 is arranged in a relative manner. The backlight module 4 is used as a backlight module, and the reflective sheet 43 is disposed adjacent to the second surface 3 of the light guide plate 3 for reflection back into the light guide plate 3. The backlight module 4 may further include _light (four) 2 44 disposed adjacent to the first surface 312 of the light guide plate 3 for adjusting optical properties, and the optical film group 44 may include an upper diffusion film or a brightness enhancement film, or Its combination and so on. ^文片,
=所述，本發明之導光板、背光模組、液晶顯示裝 置及4造方法中’粗糙面係用以破壞光線於導光板内的 全反射，故於導絲之粗键面上設置複數個網點後， 網點會部分平坦化粗糖面，進而增加有網㈣置的區域之 光^於‘光板内進订全反射的程度。因此，藉由網點設置 的山度彳以5周整光線於導光板内部全反射的量。於本發 :中，，點於靠近人光侧面之密度大於遠離人光側面之密 人光側面的區域之光線全反射較多，而遠離入 先側面的區域之光線全反射較少，進而達到均勻的出光。 此外’错由婦面與網點的配合設置，可減少光線在導光 力抽耗亚立曰加出光效率，甚至可降低需採購其他光學 肤片的成本。 以上所述僅為舉例性，而非為限制性者。任何未脫離 發明之精神與料’而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 201122581 【圖式簡單說明】 圖_丨為一 圖】為一種習知之導光板的示意圖； 0 2及0 3為本發明第一實施例之導 圖4至圖6為本發明第二實施例之導In the light guide plate, the backlight module, the liquid crystal display device and the method for manufacturing the invention, the 'rough surface is used to destroy the total reflection of light in the light guide plate, so a plurality of thick guide surfaces are arranged on the guide wire. After the dot, the dot will partially flatten the rough sugar surface, thereby increasing the extent of the light in the area where the net (four) is placed and the total reflection in the light plate. Therefore, the amount of total reflection inside the light guide plate by the entire circumference of the light is set by the mountain of the dot. In the present invention, the light having a density closer to the side of the human light than the side of the light side of the dense person away from the side of the human light is more totally reflected, and the light far from the area of the front side is less totally reflected. Even light. In addition, the combination of the woman's face and the dot can reduce the light-emitting efficiency of the light-guiding force, and even reduce the cost of purchasing other optical films. 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 shall be included in the scope of the appended claims. 201122581 [Simplified illustration of the drawings] Fig. 4 is a schematic view of a conventional light guide plate; 0 2 and 0 3 are the first embodiment of the present invention. Figs. 4 to 6 are the second embodiment of the present invention. guide
的示意圖； 意圖； 圖7A及)1 7BS本發明之導光板具有不同微結構的示 圖8為本發明較佳實施例之導光板之製造方法的流程 示意圖； 圖9為本發明較佳實施例之背光模組的示意圖；以及 圖10為本發明較佳實施例之液晶顯示裝置的示意圖。 【主要元件符號說明】 1、2、2a、2b、2c、2d、3 :導光板 1 b 211、311 :入光侧面 1 2 .反射面 1 3 :出光面 14、22、32 :網點 2 1、2 1 a、21 b、3 1 :本體 212、 312:第一表面 213、 213a、213b、213c、21.3d、313 :第二表面 2 1 5 ·另一入光側面 4 :背光模組 41、L :光源 12 201122581 42 :反射罩 43 :反射片 44 :光學膜片組 5 :液晶顯示面板 • 6 :液晶顯示裝置 MS :微結構 SO]、S02 :導光板之製造方法的步驟FIG. 7 is a schematic diagram of a method for manufacturing a light guide plate according to a preferred embodiment of the present invention; FIG. 9 is a schematic view of a preferred embodiment of the present invention; FIG. A schematic diagram of a backlight module; and FIG. 10 is a schematic diagram of a liquid crystal display device according to a preferred embodiment of the present invention. [Description of main component symbols] 1, 2, 2a, 2b, 2c, 2d, 3: light guide plate 1 b 211, 311: light incident side surface 1 2 . reflective surface 13: light exit surface 14, 22, 32: mesh point 2 1 2 1 a, 21 b, 3 1 : body 212, 312: first surface 213, 213a, 213b, 213c, 21.3d, 313: second surface 2 1 5 · another light incident side 4: backlight module 41 L: Light source 12 201122581 42 : Reflector 43 : Reflector 44 : Optical film set 5 : Liquid crystal display panel • 6 : Liquid crystal display device MS : Microstructure SO], S02 : Steps of manufacturing the light guide plate