201019003 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種背光模組、用於背光模組之導光板及 其製造方法，詳言之，係關於一種導光板具有微結構之背 光模組、具有微結構且用於背光模組之導光板及其製造方 法。 【先前技術】 在背光模組之應用中’有二個重要的課題：一為改變光 線傳遞路徑，另一為導光板上加工出微結構。 在改變光線傳遞路徑方面，學者Fujieda等人[Ichiro Fujieda，Yoshihiko Takagi, Fanny Rahadian, "Design considerations for a backlight with switchable viewing angles". SPIE Vol. 6338 (2006)，63380H 1-11]提出於LED侧 向光源及導光板之間置入電控的液晶（Liquid Crystal, LC) 來控制出光角度。如此將有別於傳統使用厚重及昂貴的電 控液晶玻璃（Polymer-Dispersed Liquid Crystal，PDLC)置於 導光板以及液晶面板之間來調整視角的作法。學者Harrold 等人[Jonathan Harrold, Graham J. Woodgate，"Switchable Brightness Enhancement for Transflective TFT LCDs and OLED displays". Proc Int Disp Workshops (2003), 1657-1658]使用極性活化微透鏡（Polarisation Activated Microlenses)聚交光線配合電控，可快速切換LCD於增亮 模式或標準模式，其中增亮模式可增加約兩倍的亮度。美 國專利第US6,400,905號則藉由改變透鏡距離或形貌，可 134310.doc 201019003 調整出光路徑，運用於像機閃光燈等處。以上使用額外介 質或是電控裝置等方式，將增加成本與產品尺寸，具不利 商品化之缺點。 雙視角顯示螢幕為典型改變光線傳遞路徑之應用，其係 指在一螢幕上以不同角度觀看可呈現出不同的影像。未來 在汽車上的應用較為看好，例如駕駛看衛星導航畫面，乘 客則可看其他内容。此技術夏普公司（SHARP)已商品化， 可搭配互不干擾的指向性制π八使用。其原理與一般顯示器 不同之處為左右兩個視角所對應的子畫素被交替排列，所 以水平方向的實際解析度將被共享而降為一半。雙向偏光 片則負責將左右視角所對應的光線傳送到完全獨立的兩個 視場中，使顯示器可以呈現兩種不同的畫面。相關文獻有 美國專利第US6,724,450號，其利用將每一螢幕畫素再分 割成兩個次畫素，並配合相異方向之雙層導光板，可使螢 幕在不同方向顯示不同影像。其缺點為使用雙層導光板亦 將將增加成本與產品厚度。 在導光板上加工出微結構方面，學者Cournoyer等人 [Alain Cournoyer, Luc Levesque, Marc Levesque, "Sub-spot size C〇2 laser micromachining of features in fused silica by V-groove etching". SPIE Vol. 5578 (2004)，544-553]以二氧 化碳雷射加工fused silica製作出垂直或傾斜之V溝微結 構，並可藉由疊合、旋轉V溝結構，來製作比雷射光斑尺 寸更小的微結構。 美國專利第US6,699,409 B2號，主要的訴求在楔形導光 134310.doc 201019003 板結構斜面及表面，以刀具製作v形、u形、〇形的結構， 應用於液晶面板背光源光的傳遞。美國專利第 US5,718,497號應用側向入光源，訴求以ν形、半圓形、凹 凸形作為導光結構，該專利主要變化結構形狀的密度及表 面粗糙度，來控制入光和出光的均勻性。美國專利第 US6,505,959 B2號主要的訴求是關於導光板的特殊微棱鏡 的形狀設計與製作方法。該專利設計以特殊的微稜鏡形 藝狀，橫切面為90度夾角的二等邊三角錐形，縱切面為一和 緩曲線形，製程採用的方法為在滾輪上刻劃結構，以滚壓 的方式來量產成形。美國專利第US5 359 691號所使用的 是側向入光源，在導光板表面佈置許多特殊的高反射微稜 鏡，配合可控制角度的技術製作方法，應用於顯示器背光 源的傳遞。美國專利第US6,819,494 B2號主要應用於液晶 面板，背光源傳遞的稜鏡製作方法。該專利提出v溝（v_ Cut)結構塑膠成形翻模製作的方法，製程首先是將結構模 • 置入模仁内，然後注入特定的黏著劑使之固化成形，然 後再移除母模，將固化成形的結構密封於射出模仁裡後 續再注入高分子，固化後脫膜，以此方法不斷的注入高分 子大量成形。美國專利第US6,836,303 B2號訴求以金字塔 角錐特徵形狀，角錐結構以60或9〇度夾角，來當作為液晶 顯示器導光板表面的微結構。 上述V溝（V-cut)結構具有出光角度狹小及有尖點應力集 中所導致加工處斷裂等問題。 因此，有必要提供一種創新且具進步性的背光模組用 134310.doc 201019003 以解決上述問題。 於背光模組之導光板及其製造方法 【發明内容】 本發明提供-種背光模組，其包括一導光板及至 光源。該導光板包括-出光面及一底面。該出光面具有複 數個凹槽，每一凹播夕 面係為一高斯曲線。該底面相對 於該出光面。該發光源用以提供光線至該導光板。 ,本發明另提供—種用於背光模組之導光板，其包括—出201019003 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, a light guide plate for a backlight module, and a method of manufacturing the same, and more particularly to a backlight module having a microstructure of a light guide plate A light guide plate having a microstructure and used for a backlight module and a method of manufacturing the same. [Prior Art] There are two important issues in the application of the backlight module: one is to change the optical transmission path, and the other is to fabricate a microstructure on the light guide plate. In changing the light transmission path, scholar Fujieda et al. [Ichiro Fujieda, Yoshihiko Takagi, Fanny Rahadian, "Design considerations for a backlight with switchable viewing angles". SPIE Vol. 6338 (2006), 63380H 1-11] proposed in LED An electrically controlled liquid crystal (LC) is placed between the lateral light source and the light guide plate to control the light angle. This will be different from the traditional use of heavy and expensive Poly-Dispersed Liquid Crystal (PDLC) placed between the light guide plate and the liquid crystal panel to adjust the viewing angle. Harold et al. [Jonathan Harrold, Graham J. Woodgate, "Switchable Brightness Enhancement for Transflective TFT LCDs and OLED displays". Proc Int Disp Workshops (2003), 1657-1658] using Polarisation Activated Microlenses The light is combined with the electronic control to quickly switch the LCD in brightening mode or standard mode, wherein the brightening mode can increase the brightness by about twice. U.S. Patent No. 6,400,905 can adjust the light path by using 134310.doc 201019003 to change the lens distance or shape, and use it for camera flash. The above use of additional media or electronic control devices will increase the cost and product size, which has the disadvantage of unfavorable commercialization. The dual-view display screen is a typical application that changes the light transmission path, which means that different images can be viewed at different angles on a screen. The future is more promising in cars, such as driving to watch satellite navigation screens, and passengers can see other content. This technology Sharp Company (SHARP) has been commercialized and can be used with a directional system that does not interfere with each other. The principle differs from the general display in that the sub-pixels corresponding to the left and right views are alternately arranged, so that the actual resolution in the horizontal direction is shared and reduced to half. The bidirectional polarizer is responsible for transmitting the light corresponding to the left and right viewing angles into two completely independent fields of view, allowing the display to present two different images. A related document is U.S. Patent No. 6,724,450, which utilizes the division of each screen pixel into two sub-pixels and a double-layer light guide plate in a different direction to allow the screen to display different images in different directions. The disadvantage is that the use of a double-layer light guide will also increase the cost and product thickness. In the processing of microstructures on the light guide, scholar Cournoyer et al [Alain Cournoyer, Luc Levesque, Marc Levesque, "Sub-spot size C〇2 laser micromachining of features in fused silica by V-groove etching". SPIE Vol. 5578 (2004), 544-553] The vertical or inclined V-groove microstructure is fabricated by carbon dioxide laser processing of fused silica, and the size of the laser spot can be made smaller by superimposing and rotating the V-groove structure. structure. U.S. Patent No. 6,699,409 B2, the main claim is in the wedge-shaped light guide 134310.doc 201019003 plate structure bevel and surface, the tool is made of v-shaped, u-shaped, 〇-shaped structure, applied to the backlight light transmission of the liquid crystal panel. U.S. Patent No. 5,718,497, which is directed to a light source, is intended to have a ν-shaped, semi-circular, and concavo-convex shape as a light guiding structure. The patent mainly changes the density and surface roughness of the structural shape to control the uniformity of light entering and exiting light. Sex. The main claim of U.S. Patent No. 6,505,959 B2 relates to the design and fabrication of a special microprism of a light guide plate. The patent is designed with a special micro-turn shape, a cross-section with a 90-degree angle of the equilateral triangular pyramid, and a longitudinal section of a gentle curve. The method used in the process is to scribe the structure on the roller to roll The way to mass production. U.S. Patent No. 5,359,691, which is incorporated herein by reference, is incorporated herein by reference to the utility of the utility of the present disclosure. U.S. Patent No. 6,819,494 B2 is mainly applied to a liquid crystal panel, and a method of manufacturing a backlight. The patent proposes a method for forming a v-cut structure plastic forming mold. The process firstly inserts the structural mold into the mold core, then injects a specific adhesive to form it, and then removes the master mold. The solidified structure is sealed in the injection mold and then injected into the polymer, and the film is removed after solidification. U.S. Patent No. 6,836, 303 B2 claims to have the pyramidal pyramidal shape and the pyramidal structure at an angle of 60 or 9 degrees as the microstructure of the surface of the liquid crystal display. The V-cut structure described above has problems such as a narrow exit angle and a fracture at the processing point due to the concentration of sharp points. Therefore, it is necessary to provide an innovative and progressive backlight module 134310.doc 201019003 to solve the above problems. The invention relates to a light guide plate and a manufacturing method thereof. The invention provides a backlight module, which comprises a light guide plate and a light source. The light guide plate includes a light emitting surface and a bottom surface. The illuminating surface has a plurality of grooves, each of which is a Gaussian curve. The bottom surface is opposite to the light exiting surface. The illumination source is for providing light to the light guide plate. The present invention further provides a light guide plate for a backlight module, which includes
光面及n該出光面具有複數個凹槽，每—凹槽之剖 面係為一高斯曲線。該底面相對於該出光面。 本發明另提供—種用於背光模組之導練之製造方法， 包括以下步驟：（a)提供—導光板，該導光板具有—出光面 及一底面；（b)將該導光板之出光面朝上；及（(〇於該導光 板之出光面形成複數個凹槽，每一凹槽之刮面係為一高斯 曲線。藉此，該高斯曲線增加該等凹槽之出光角度及該導 光板之強度。 【實施方式】 參考圖1，顯示本發明背光模組之第一實施例之立體示 意圖。該背光模組1A包括一導光板ha及至少一發光源 12。該導光板11A包括一出光面hi及一底面η 2(圖之）。在 本實施例中，該導光板11Α係由一集光纖器113及複數條光 纖114所構成。而在其他應用中’該導光板〗1Α之材質可為 高分子或玻璃。該出光面111具有複數個凹槽Η11，每一 凹槽1111之剖面係為一高斯曲線，如圖2所示。在本實施 例中，該等凹槽1111間之間距相同，且其深度及寬度相 134310.doc -9- 201019003 同。該等凹槽1111係以雷射方式形成，使用雷射可避免應 力的產生，更不會有光纖變形或翹曲的情形。而在其他應 用中’該等凹槽1111係可以刀具、蝕刻、壓印或模造方式 形成。 該底面112係相對於該出光面111。在本實施例中，該等 光纖114係緊密並排而形成該出光面及該底面112，每 一光纖114具有複數個凹槽iiu。該發光源12係用以提供 _ 光線至該導光板11A。在本實施例中，該發光源係位於 該導光板11A之一側。而在其他應用中，該發光源12係可 位於該導光板11A之底面112。該發光源丨2係為發光二極 體、鶴絲燈或冷陰極管。 在本發明中’該高斯曲線係為一平滑曲線，可增加該等 凹槽1111之出光角度及該導光板11A之強度，得以改善習 知V溝（V-cut)結構具有出光角度狹小及有尖點應力集中所 導致加工處斷裂等問題。 • 參考圖3，顯示本發明背光模組之第一實施例之出光均 齊度，其中該箭頭代表入光方向。在該導光板uA之出光 面111標出九個點（a〜i) ’分別進行輝度測量。所得數據依 序為.54.8， 55.7， 56.8， 52.4， 48.0， 49.6， 45.5， 45.5及 45.7(cd/m2)，其均齊度等於（45 5/56 8)χ1〇〇%=8〇 ιι%。 由此可知，本發明之具有高斯曲線之凹槽（圖2)使該導光板 11A具有良好的輝度均齊度。 在本發明中，藉由調整導光板之該等凹槽間之間距或凹 槽之深度及寬度，將可製作出高輝度均齊度與高出光效率 134310.doc 201019003 之導光板。參考圖4，顯示本發明背光模組之第二實施例 之立體示意圖。本實施例之背光模組1Β與第一實施例之背 光模組1Α大致相同’其中相同之元件賦予相同之編號。本 實施例與第一實施例之不同處’僅在於該導光板11Β之結 構不同。在本實施例中’該導光板11Β更包括一第一侧邊 115及一第二側邊116。該等凹槽1111間之間距係沿著該第 一側邊115往該第二側邊116之方向逐漸變小。 0 參考圖5，顯示本發明背光模組之第三實施例之立髏示 意圖。本實施例之背光模組1C與第一實施例之背光模組 1Α大致相同，其中相同之元件賦予相同之編號。本實施例 與第一實施例之不同處，僅在於該導光板11C之結構不 同。在本實施例中，該導光板11C更包括一第一側邊115及 一第二側邊116。該等凹槽1111之深度及寬度係沿著該第 一側邊115往該第二側邊116之方向逐漸變大。 參考圖6，顯示本發明背光模組之第四實施例之立體示 • 意圖。本實施例之背光模組1D與第一實施例之背光模組 1A大致相同，其中相同之元件賦予相同之編號。本實施例 與第一實施例之不同處，僅在於該導光板11D之結構不 同。在本實施例中，該導光板11D更包括一第一側邊115及 一第二側邊116。該等凹槽1111間之間距係沿著該第一側 邊115往該第二侧邊116之方向逐漸變小，且該等凹槽Hu 之深度及寬度係沿著該第一侧邊115往該第二側邊116之方 向逐漸變大。 在本發明中’藉由調整一導光板之該等凹槽之角度，將 134310.doc •11- 201019003 可改變該導光板之出光角度以控制光線射出方向。參考圖 7’顯示本發明背光模組之第五實施例之立體示意圖。本 實施例之背光模組1E與第一實施例之背光模組1A大致相 同’其中相同之元件賦予相同之編號。本實施例與第一實 施例之不同處，僅在於該導光板11E之結構不同。在本實 施例中’該導光板11E之每一凹槽llU更包括一傾角^， 如圖8所示。參考圖8，每一凹槽^丨具有一第一側壁霤丨及 φ 一第二側壁W2，該第一側壁Wl之延伸線^及該第二側壁 W2之延伸線L2具有一角平分線L〇，該角平分線“與一垂直 該出光面111之法線N之夾角即為該傾角α之角度。在本實 施例中，該傾角α之方向定義為正。 參考圖9，顯示本發明背光模組之第五實施例之測量角 度及發光強度之分布圖。由該分布圖可知，當測量角度介 於10。〜30。，該導光板11Ε之發光強度大於8〇cd/m2，當測 量角度介於30。〜170。，該導光板11E之發光強度由8〇cd/m2 ® 遞減至20cd/m2以下。由此可知，具有傾角α之該等凹槽 1111改變該導光板11Ε之出光方向，在本實施例中，該導 光板11Ε之該傾角係為30 ，當測量角度介於1〇。〜3〇。 時’該導光板11Ε具有最大之發光強度。 參考圖10,顯示本發明背光模組之第六實施例之立體示 意圖。本實施例之背光模組11?與第一實施例之背光模組ια 大致相同，其中相同之元件賦予相同之編號。本實施例與 第一實施例之不同處，僅在於該導光板UF之結構不同❶ 在本實施例中，該導光板11F之該等凹槽ml包括複數個 134310.doc •12· 201019003 第-凹槽m2及複數個第二凹槽1113，該等第一凹槽⑴2 與該等第二凹槽uu交錯排列，每―第—凹槽⑴〗具有一 第-傾角α,，每一第二凹槽1113具有一第二傾角α"在 本實施例中，㈣一傾角αι及該第二傾角^之方向不 同’其中該第-傾角^之方向定義為負，該第二傾角“ 之方向定義為正。The smooth surface and the light-emitting surface have a plurality of grooves, and each of the grooves has a Gaussian curve. The bottom surface is opposite to the light exit surface. The invention further provides a manufacturing method for guiding a backlight module, comprising the steps of: (a) providing a light guiding plate, the light guiding plate has a light emitting surface and a bottom surface; (b) emitting the light guiding plate And (in the light-emitting surface of the light guide plate, a plurality of grooves are formed, and the scraping surface of each groove is a Gaussian curve. Thereby, the Gaussian curve increases the light-emitting angle of the grooves and the The first embodiment of the backlight module of the present invention is shown in Fig. 1. The backlight module 1A includes a light guide plate ha and at least one light source 12. The light guide plate 11A includes In the present embodiment, the light guide plate 11 is composed of an optical fiber assembly 113 and a plurality of optical fibers 114. In other applications, the light guide plate is used. The material may be a polymer or a glass. The light-emitting surface 111 has a plurality of grooves ,11, and each of the grooves 1111 has a Gaussian curve as shown in Fig. 2. In the embodiment, the grooves 1111 The distance between the two is the same, and its depth and width are 134,310. Doc -9- 201019003 The same groove 1111 is formed by laser, the use of laser can avoid the occurrence of stress, and there is no fiber deformation or warping. In other applications, the grooves The 1111 can be formed by cutting, etching, stamping or molding. The bottom surface 112 is opposite to the light emitting surface 111. In the embodiment, the optical fibers 114 are closely arranged side by side to form the light emitting surface and the bottom surface 112, each of which The optical fiber 114 has a plurality of grooves iiu. The light source 12 is used to provide light to the light guide plate 11A. In this embodiment, the light source is located on one side of the light guide plate 11A. In other applications, The light source 12 can be located on the bottom surface 112 of the light guide plate 11A. The light source source 2 is a light emitting diode, a crane light or a cold cathode tube. In the present invention, the Gaussian curve is a smooth curve. Increasing the light exit angle of the grooves 1111 and the strength of the light guide plate 11A improves the conventional V-cut structure, which has problems such as a narrow exit angle and a crack at the point where the stress concentration of the sharp point is caused. 3, showing the backlight mold of the present invention The light uniformity of the first embodiment of the group, wherein the arrow represents the light entering direction. The light emitting surface 111 of the light guiding plate uA is marked with nine points (a~i) for luminance measurement respectively. The obtained data are sequentially .54.8, 55.7, 56.8, 52.4, 48.0, 49.6, 45.5, 45.5 and 45.7 (cd/m2), the uniformity of which is equal to (45 5/56 8)χ1〇〇%=8〇ιι%. The groove having a Gaussian curve (Fig. 2) of the present invention has good brightness uniformity of the light guide plate 11A. In the present invention, by adjusting the distance between the grooves or the depth of the groove of the light guide plate, Width, will be able to produce high brightness uniformity and high light efficiency 134310.doc 201019003 light guide. Referring to Figure 4, there is shown a perspective view of a second embodiment of a backlight module of the present invention. The backlight module 1 of the present embodiment is substantially the same as the backlight module 1 of the first embodiment, wherein the same elements are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11 is different. In the embodiment, the light guide plate 11 further includes a first side 115 and a second side 116. The distance between the grooves 1111 gradually decreases along the first side 115 toward the second side 116. Referring to Fig. 5, there is shown a schematic view of a third embodiment of the backlight module of the present invention. The backlight module 1C of the present embodiment is substantially the same as the backlight module 1 of the first embodiment, wherein the same components are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11C is different. In this embodiment, the light guide plate 11C further includes a first side 115 and a second side 116. The depth and width of the grooves 1111 gradually increase along the first side 115 toward the second side 116. Referring to Fig. 6, there is shown a perspective view of a fourth embodiment of the backlight module of the present invention. The backlight module 1D of the present embodiment is substantially the same as the backlight module 1A of the first embodiment, wherein the same components are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11D is different. In this embodiment, the light guide plate 11D further includes a first side 115 and a second side 116. The distance between the grooves 1111 gradually decreases along the direction of the first side edge 115 toward the second side edge 116, and the depth and width of the grooves Hu are along the first side edge 115. The direction of the second side 116 gradually becomes larger. In the present invention, by adjusting the angle of the grooves of a light guide plate, 134310.doc •11-201019003 can change the light exit angle of the light guide plate to control the light emission direction. Referring to Figure 7', a perspective view of a fifth embodiment of the backlight module of the present invention is shown. The backlight module 1E of the present embodiment is substantially the same as the backlight module 1A of the first embodiment, wherein the same elements are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11E is different. In the present embodiment, each of the grooves 11E of the light guide plate 11E further includes an inclination angle ^ as shown in FIG. Referring to FIG. 8, each of the grooves has a first side wall and a second side wall W2. The extension line of the first side wall W1 and the extension line L2 of the second side wall W2 have an angle bisector L〇. The angle bisector "the angle between the angle N and the normal line N perpendicular to the light exiting surface 111 is the angle of the tilt angle α. In the present embodiment, the direction of the tilt angle α is defined as positive. Referring to FIG. 9, the backlight of the present invention is shown. The distribution angle of the measurement angle and the luminous intensity of the fifth embodiment of the module. It can be seen from the distribution diagram that when the measurement angle is between 10 and 30, the luminous intensity of the light guide plate 11 is greater than 8 〇cd/m2, when measuring The angle of the light guide plate 11E is reduced from 8 〇cd/m2 ® to less than 20 cd/m 2 . It can be seen that the grooves 1111 having the inclination angle α change the light output of the light guide plate 11 . In the present embodiment, the inclination angle of the light guide plate 11 is 30, and when the measurement angle is between 1 〇 and 3 〇, the light guide plate 11 Ε has the maximum luminous intensity. Referring to FIG. 10, the present invention is shown. A perspective view of a sixth embodiment of a backlight module. The backlight module of this embodiment 11 is substantially the same as the backlight module ια of the first embodiment, wherein the same components are given the same reference numerals. The difference between this embodiment and the first embodiment is that the structure of the light guide plate UF is different. The grooves ml of the light guide plate 11F include a plurality of 134310.doc • 12· 201019003 first groove m2 and a plurality of second grooves 1113, the first grooves (1) 2 and the second grooves The uu is staggered, each of the first grooves (1) has a first inclination angle α, and each of the second grooves 1113 has a second inclination angle α" in this embodiment, (4) an inclination angle αι and the second inclination angle ^ The direction is different 'where the direction of the first tilt angle ^ is defined as negative, and the direction of the second tilt angle is defined as positive.
參考圖11，顯示本發明背光模組之第七實施例之立體示 意圖。本實施狀背光模組1G與第一實施例之背光模組 1A大致相同’纟中相同之元件賦予相同之編號。本實施例 與第-實施例之不同處，僅在於該導光板11G之結構不 同。在本實施例中’該導光板11G更包括—第—側邊115及 一第二側邊110。該等凹槽U11之深度及寬度係沿著該第 一側邊115往該第二側邊116之方向逐漸變大，該等凹槽 1111包括複數個第一凹槽1U2及複數個第二凹槽1113，該 等第一凹槽1112與該等第二凹槽1113交錯排列，每一第一 凹槽1112具有一第一傾角αι，每一第二凹槽1113具有一第 二傾角α2。在本實施例中，該第一傾角αι及該第二傾角 α 2之方向不同，其中該第一傾角αι之方向定義為負該 第二傾角α 2之方向定義為正。 參考圖12，顯示本發明背光模組之第八實施例之立體示 意圖。本實施例之背光模組丨Η與第一實施例之背光模組 1Α大致相同’其中相同之元件賦予相同之編號。本實施例 與第一實施例之不同處’僅在於該導光板11H之結構不 同。在本實施例中’該導光板11H更包括一第一側邊115及 134310.doc -13· 201019003 一第一側邊116。該等凹槽1111之深度及寬度係由該導光 板11H之中心起算分別往該第一側邊115及該第二側邊116 之方向逐漸變小，該等凹槽1U1包括複數個第一凹槽UP 及複數個第二凹槽1113，該等第__凹槽1112與該等第二凹 槽1113交錯排列，每一第一凹槽1112具有一第一傾角α j， 每一第二凹槽1113具有一第二傾角《2。在本實施例中， 該發光源12係位於該導光板丨1Η之兩側。在本實施例中， 鲁該第傾角αι及該第二傾角α2之方向不同，其中該第一 傾角〇^之方向定義為負，該第二傾角α 2之方向定義為 正。 根據圖9之數據顯示，具有傾角α之該等凹槽lui可改 變該導光板11E之出光方向，故在上述第六至第八實施例 中，具有第一傾角《，之該等第一凹槽1112及具有第二傾 角Q：2之該等第二凹槽1113亦可改變該導光板nF、及 11Η之出光方向，使光線導向兩個不同的方向，以利於應 • 肖於一雙視角螢幕。當加工傾角配合雙視角顯示螢幕時， 由於顯示器與導光板11F、11G及11Η出光方向相吻合將 可使光損失降到最低，提升整體亮度。出光效率增加後將 可達到節能之功效，且高亮度將使螢幕辨識度提升，減少 雙向螢幕一側晝面影像易受另一側畫面影像干擾的問題。 參考圖13，顯示本發明背光模組之第九實施例之立體示 意圖。本實施例之背光模組^與第一實施例之背光模組1Α 大致相同，其中相同之元件賦予相同之編號。本實施例與 第一實施例之不同處，僅在於該導光板lu之結構不同。 134310.doc 14- 201019003 在本實施例中，該導光板UI更包括__第—側邊ιΐ5及一第 -側邊116。該等凹槽仙包括複數個第一凹槽"12、複 數個第二凹槽1113及複數個第三凹槽1114，該等第一凹槽 1112係靠近該第一侧邊115，該等第二凹槽⑴3係靠近該 第二側邊116，該等第三凹槽1114位於該等第一凹槽⑴2 及該等第一凹槽1113之間，每一第一凹槽1112具有一第一 傾角α丨’每一第二凹槽1113具有一第二傾角，每一第 • 三凹槽1114具有一第三傾角α3，且該第三傾角“為〇。。 在本實施例中，該第一傾角α i及該第二傾角α 2之方向不 同，其中該第一傾角^之方向定義為正，該第二傾角^2 之方向定義為負》 根據圖9之數據顯示，具有傾角α之該等凹槽丨1丨丨可改 變該導光板11Ε之出光方向，故在本實施例中，可改變該 導光板111之出光方向，使光線向該導光板UI中心的方向 集中。 • 參考圖14，顯示本發明背光模組之第十實施例之立體示 意圖。本實施例之背光模組1J與第一實施例之背光模組1A 大致相同，其中相同之元件賦予相同之編號。本實施例與 第一實施例之不同處’僅在於該導光板1U之結構不同。 在本實施例中’該導光板11J更包括一第一側邊n5及一第 二側邊116。每一凹槽1111具有一傾角α。該等凹槽1111 之傾角α係由該導光板11J之中心起算分別往該第一側邊 115及該第二侧邊116之方向逐漸變大。在本實施例中，靠 近該第一側邊115之傾角α之方向定義為負，而靠近該第 134310.doc -15- 201019003 二侧邊116之傾角α之方向定義為正。 根據圖9之數據顯示，具有傾角〇；之該等凹槽1111可改 變該導光板11Ε之出光方向，故在本實施例中，該等凹槽 1111可改變該導光板11J之出光方向，使光線向外發散。 參考圖15，顯示本發明背光模組之第十一實施例之立體 示意圖’其中增加了液晶面板》在本實施例中，該背光模 組1Κ更包括一反射膜13及至少一光學膜14。該反射膜13位 g 於該導光板11Α之底面112。而在其他應用中，當該發光源 12係位於該導光板ha之底面112時，該反射膜13係位於該 發光源12之下方。該光學膜14位於該導光板ha之出光面 111。在本實施例中，一液晶面板2置於該背光模組1K之光 學膜14上。 參考圖16至圖17，顯示本發明用於背光模組之導光板之 製造方法之第一實施例之示意圖。首先，參考圖16，提供 一導光板11L’該導光板11L具有一出光面丨丨丨及一底面 ❹ 112。在本實施例中’該導光板iil係由一集光纖器H3及 複數條光纖114所構成。而在其他應用中，該導光板丨丨^之 材質可為高分子或玻璃。在本實施例中，該等光纖114係 緊密並排而形成該出光面111及該底面112。 接著’將該導光板11L之出光面111朝上。在本實施例 中，該導光板11L·係置於一支架3(圖17)上，該支架3具有 一夹角/3(圖17)，使得該出光面hi與水平面也具有一夾角 Θ(圖17)。該導光板iil之光纖114高於該集光纖器η]，該 夹角泠之方向定義為正。最後，參考圖17，於該導光板 134310.doc -16- 201019003 也之出光面111形成複數個凹槽1111，每-凹槽1111之剖 、為间斯曲線6在本實施例中，每一凹槽U11具有一 傾角α ’該等凹槽1111間之間距相同’且該等凹槽1111之 深又及寬度不同。在本實施例中’該等凹槽^⑴係利用雷 射加工形成，且該雷射加工之參數係由類神經網路法做控 制Q而在其他應用巾’該等凹槽ij i係可以刀具、蝕刻、 P或模迨方式形成。在本實施例中，該導光板iil係對 應上述第五實施例之導光板11E。 參考圖18至圖20’ |貝#本發明用於背光模組之導光板之 製造方法之第二實施例之示意圖。首先，參考圖18，提供 -導光板UM，該導光板11M具有一出光面lu及一底面 112。在本實施例中，該導光板UM係由一集光纖器I"及 複數條光纖114所構成。而在其他應用中，該導光板UM 之材質可為高分子或玻璃。在本實施例中，該等光纖ιΐ4 係緊密並排而形成該出光面U1及該底面112。 接著，將該導光板11M之出光面ln朝上。在本實施例 中，該導光板11M係置於一支架4(圖19)上，該支架4具有 一第一夾角石1 ’使得該出光面111與水平面也具有一第一 夾角点1。該導光板11M之集光纖器113高於該等光纖114， 該第一夾角；3!之方向定義為負。接著，參考圖19，於該 導光板11M之出光面111形成複數個第一凹槽1112，該等第 一凹槽1112之剖面係為一高斯曲線，每一第一凹槽1112具 有一第一傾角α!。在本實施例中，該第一傾角αι之方向 定義為負。接著，調整該支架4’使該支架4具有一第二失 134310.doc -17- 201019003 角/3 2(圖2〇)，且該導光板11M之出光面111與水平面也具 有一第二夾角/32。該導光板11M之光纖114高於該集光纖 器113，該第二夾角冷2之方向定義為正。最後，參考圖 20’於該導光板11M之出光面111形成複數個第二凹槽 1113,該等第二凹槽ill 3之剖面係為一高斯曲線，每一第 二凹槽1113具有一第二傾角a〗。在本實施例中，該第二 傾角α2之方向定義為正。 • 在本實施例中，該等凹槽（該等第一凹槽1112及該等第 一凹槽1113)間之間距相同’而該等凹槽（該等第一凹槽 1112及該等第二凹槽ιι13)之深度及寬度不同。在本實施例 中，該等凹槽（該等第一凹槽1U2及該等第二凹槽1113)係 利用雷射加工形成，且該雷射加工之參數係由類神經網路 法做控制。而在其他應用中，該等凹槽（該等第一凹槽 1112及該等第二凹槽1113)係可以刀具、蝕刻、壓印或模造 方式形成。在本實施例中，該導光板丨1Μ係對應上述第七 • 實施例之導光板11G。 惟上述實施例僅為說明本發明之原理及其功效而非用 以限制本發明。因此，習於此技術之人士對上述實施例進 行修改及變化仍不脫本發明之精神。本發明之權利範園應 如後述之申請專利範圍所列。 【圖式簡單說明】 圖1顯示本發明背光模組之第一實施例之立體示意圖； 圖2顯示圖1之局部剖視示意圖； 圖3顯不本發明背光模組之第一實施例之出光均齊度； 134310.doc -18- 201019003 圖4顯示本發明背光模組之第二實施例之立體示意圖； 圖5顯示本發明背光模組之第三實施例之立體示意圖， 圖6顯示本發明背光模組之第四實施例之立體示意圖； 圖7顯示本發明背光模組之第五實施例之立體示意圖； 圖8顯示圖7之局部剖視示意圖； 圖9顯不本發明背光模組之第五實施例之測量角度暨出 光強度之分布圖； 暴 圖10顯示本發明背光模組之第六實施例之立體示意圖； 圖11顯不本發明背光模組之第七實施例之立體示意圖； 圖12顯示本發明背光模組之第八實施例之立體示意圖； 圖13顯示本發明背光模組之第九實施例之立體示意圖； 圖14顯示本發明背光模組之第十實施例之立體示意圖； 圖15顯示本發明背光模組之第十一實施例之立體示意 團， 圖16至圖17顯示本發明用於背光模組之導光板之製造方 • 法之第一實施例之示意圖；及 圖18至圖20顯示本發明用於背光模組之導光板之製造方 法之第二實施例之示意圖。 【主要元件符號說明】 1A 本發明背光模組之第一實施例 1B 本發明背光模組之第二實施例 1C 本發明背光模組之第三實施例 1D 本發明背光模組之第四實施例 E 本發明旁光模組之第五實施例 1343l0.doc -19. 201019003 本發明背光模組之第六實施例 本發明背光模組之第七實施例 本發明背光模組之第八實施例 本發明背光模組之第九實施例 本發明背光模組之第十實施例 本發明背光模組之第十一實施例 液晶面板Referring to Fig. 11, there is shown a perspective view of a seventh embodiment of the backlight module of the present invention. The backlight module 1G of the present embodiment is substantially the same as the backlight module 1A of the first embodiment, and the same elements are denoted by the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11G is different. In the present embodiment, the light guide plate 11G further includes a first side 115 and a second side 110. The depth and width of the grooves U11 gradually increase along the direction of the first side edge 115 toward the second side edge 116. The grooves 1111 include a plurality of first grooves 1U2 and a plurality of second recesses. The first groove 1112 is staggered with the second grooves 1113. Each of the first grooves 1112 has a first inclination angle α1, and each of the second grooves 1113 has a second inclination angle α2. In this embodiment, the direction of the first tilt angle αι and the second tilt angle α 2 are different, wherein the direction of the first tilt angle αι is defined as the direction of the negative second tilt angle α 2 is defined as positive. Referring to Figure 12, there is shown a perspective view of an eighth embodiment of the backlight module of the present invention. The backlight module of the present embodiment is substantially the same as the backlight module 1 of the first embodiment, wherein the same elements are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate 11H is different. In the embodiment, the light guide plate 11H further includes a first side 115 and a 134310.doc -13· 201019003 a first side 116. The depth and width of the grooves 1111 are gradually reduced from the center of the light guide plate 11H toward the first side 115 and the second side 116. The grooves 1U1 include a plurality of first recesses. a groove UP and a plurality of second grooves 1113, the first groove 1112 and the second grooves 1113 are alternately arranged, and each of the first grooves 1112 has a first inclination angle α j , and each second concave The groove 1113 has a second inclination "2". In this embodiment, the light source 12 is located on both sides of the light guide plate 丨1Η. In this embodiment, the direction of the dip angle αι and the second dip angle α2 are different, wherein the direction of the first dip angle 定义^ is defined as negative, and the direction of the second dip angle α 2 is defined as positive. According to the data of FIG. 9, the grooves lui having the inclination angle α can change the light outgoing direction of the light guide plate 11E, so in the sixth to eighth embodiments described above, the first inclination angles are the first concave angles. The groove 1112 and the second grooves 1113 having the second inclination angle Q: 2 can also change the light-emitting directions of the light guide plates nF and 11 , to guide the light to two different directions, so as to facilitate the view angle. Screen. When the processing angle is matched with the dual-view display screen, the light loss is minimized and the overall brightness is improved because the display and the light guide plates 11F, 11G, and 11 are aligned with each other. When the light extraction efficiency is increased, the energy saving effect can be achieved, and the high brightness will increase the screen visibility and reduce the problem that the image on the side of the two-way screen is easily interfered by the image on the other side. Referring to Figure 13, a perspective view of a ninth embodiment of a backlight module of the present invention is shown. The backlight module of the present embodiment is substantially the same as the backlight module 1 of the first embodiment, wherein the same components are given the same reference numerals. The difference between this embodiment and the first embodiment is only that the structure of the light guide plate lu is different. 134310.doc 14- 201019003 In this embodiment, the light guide plate UI further includes __first side ιΐ5 and one first side 116. The grooves include a plurality of first grooves "12, a plurality of second grooves 1113 and a plurality of third grooves 1114, the first grooves 1112 being adjacent to the first side 115, The second groove (1) 3 is adjacent to the second side 116. The third groove 1114 is located between the first groove (1) 2 and the first groove 1113. Each of the first grooves 1112 has a first groove An inclination angle α丨' each of the second grooves 1113 has a second inclination angle, each of the third grooves 1114 has a third inclination angle α3, and the third inclination angle is “〇. In the embodiment, the The direction of the first inclination angle α i and the second inclination angle α 2 are different, wherein the direction of the first inclination angle ^ is defined as positive, and the direction of the second inclination angle ^2 is defined as negative. According to the data of FIG. 9 , having the inclination angle α The grooves 丨1 丨丨 can change the light-emitting direction of the light guide plate 11 , so in the embodiment, the light-emitting direction of the light guide plate 111 can be changed to concentrate the light toward the center of the light guide plate UI. Figure 14 is a perspective view showing a tenth embodiment of the backlight module of the present invention. J is substantially the same as the backlight module 1A of the first embodiment, wherein the same components are given the same reference numerals. The difference between the present embodiment and the first embodiment is only that the structure of the light guide plate 1U is different. In this embodiment The light guide plate 11J further includes a first side n5 and a second side 116. Each of the grooves 1111 has an inclination angle α. The inclination angle α of the grooves 1111 is determined by the center of the light guide plate 11J. The direction of the first side edge 115 and the second side edge 116 gradually becomes larger. In the embodiment, the direction of the inclination angle α close to the first side edge 115 is defined as negative, and close to the 134310.doc -15 - 201019003 The direction of the inclination angle α of the two side edges 116 is defined as positive. According to the data of Fig. 9, the inclination angle 〇; the grooves 1111 can change the light exiting direction of the light guide plate 11, so in this embodiment, The groove 1111 can change the light-emitting direction of the light guide plate 11J to make the light diverge outward. Referring to FIG. 15 , a perspective view showing an eleventh embodiment of the backlight module of the present invention, in which a liquid crystal panel is added, is shown in this embodiment. The backlight module 1 further includes a The film 13 and the at least one optical film 14. The reflective film 13 is located on the bottom surface 112 of the light guide plate 11. In other applications, when the light source 12 is located on the bottom surface 112 of the light guide plate ha, the reflective film 13 is located below the light source 12. The optical film 14 is located on the light exit surface 111 of the light guide plate ha. In the embodiment, a liquid crystal panel 2 is placed on the optical film 14 of the backlight module 1K. 17 is a schematic view showing a first embodiment of a method for manufacturing a light guide plate of a backlight module of the present invention. First, referring to FIG. 16, a light guide plate 11L is provided, the light guide plate 11L has a light exit surface and A bottom surface ❹ 112. In the present embodiment, the light guide plate iil is composed of an optical fiber bundle H3 and a plurality of optical fibers 114. In other applications, the material of the light guide plate may be a polymer or a glass. In the present embodiment, the optical fibers 114 are closely arranged side by side to form the light-emitting surface 111 and the bottom surface 112. Next, the light-emitting surface 111 of the light guide plate 11L is directed upward. In this embodiment, the light guide plate 11L· is placed on a bracket 3 (FIG. 17) having an angle/3 (FIG. 17) such that the light-emitting surface hi and the horizontal plane also have an angle Θ ( Figure 17). The optical fiber 114 of the light guide plate iil is higher than the optical fiber η], and the direction of the included angle 定义 is defined as positive. Finally, referring to FIG. 17, a plurality of grooves 1111 are formed on the light-emitting surface 111 of the light guide plate 134310.doc -16-201019003, and the cross-section of each groove 1111 is a sigmoid curve 6 in this embodiment, each The groove U11 has an inclination angle α 'the distance between the grooves 1111 is the same' and the depth and width of the grooves 1111 are different. In the present embodiment, the grooves ^(1) are formed by laser processing, and the parameters of the laser processing are controlled by the neural network method, and in other applications, the grooves ij i can be Tool, etch, P or die form. In the present embodiment, the light guide plate iil corresponds to the light guide plate 11E of the fifth embodiment described above. Referring to Figures 18 to 20', a schematic view of a second embodiment of a method of fabricating a light guide plate for a backlight module of the present invention is shown. First, referring to Fig. 18, a light guide plate UM having a light exit surface lu and a bottom surface 112 is provided. In this embodiment, the light guide plate UM is composed of an optical fiber assembly I" and a plurality of optical fibers 114. In other applications, the material of the light guide plate UM may be polymer or glass. In the present embodiment, the optical fibers ι 4 are closely arranged side by side to form the light-emitting surface U1 and the bottom surface 112. Next, the light-emitting surface ln of the light guide plate 11M is directed upward. In the present embodiment, the light guide plate 11M is placed on a bracket 4 (Fig. 19) having a first angled stone 1' such that the light exiting surface 111 also has a first angle 1 with the horizontal plane. The collector fiber 113 of the light guide plate 11M is higher than the fibers 114, and the direction of the first angle; 3! is defined as negative. Next, referring to FIG. 19, a plurality of first grooves 1112 are formed on the light-emitting surface 111 of the light guide plate 11M. The first grooves 1112 have a Gaussian curve, and each of the first grooves 1112 has a first Inclination α!. In the present embodiment, the direction of the first tilt angle αι is defined as negative. Then, the bracket 4' is adjusted so that the bracket 4 has a second loss 134310.doc -17 - 201019003 angle / 3 2 (Fig. 2A), and the light exit surface 111 of the light guide plate 11M also has a second angle with the horizontal plane. /32. The optical fiber 114 of the light guide plate 11M is higher than the optical fiber assembly 113, and the direction of the second cold angle 2 is defined as positive. Finally, a plurality of second grooves 1113 are formed on the light-emitting surface 111 of the light guide plate 11M, and the second grooves ill 3 have a Gaussian curve, and each of the second grooves 1113 has a first Two dip angle a〗. In the present embodiment, the direction of the second inclination angle α2 is defined as positive. In the present embodiment, the grooves (the first grooves 1112 and the first grooves 1113) are the same distance between the grooves and the grooves (the first grooves 1112 and the first The width and width of the two grooves ιι13) are different. In this embodiment, the grooves (the first grooves 1U2 and the second grooves 1113) are formed by laser processing, and the parameters of the laser processing are controlled by a neural network method. . In other applications, the grooves (the first grooves 1112 and the second grooves 1113) can be formed by cutting, etching, stamping or molding. In the present embodiment, the light guide plate 丨1 corresponds to the light guide plate 11G of the seventh embodiment. However, the above-described embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can devise modifications and variations of the embodiments described above without departing from the spirit of the invention. The scope of the invention should be as set forth in the scope of the patent application described later. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first embodiment of a backlight module of the present invention; FIG. 2 is a partial cross-sectional view showing the first embodiment of the backlight module of the present invention; FIG. 4 is a perspective view showing a second embodiment of the backlight module of the present invention; FIG. 5 is a perspective view showing a third embodiment of the backlight module of the present invention, and FIG. 6 is a view showing the present invention. FIG. 7 is a perspective view of a fifth embodiment of the backlight module of the present invention; FIG. 8 is a partial cross-sectional view of FIG. 7; FIG. 11 is a perspective view showing a seventh embodiment of the backlight module of the present invention; FIG. 11 is a perspective view showing a seventh embodiment of the backlight module of the present invention; 12 is a perspective view showing a ninth embodiment of a backlight module of the present invention; FIG. 13 is a perspective view showing a ninth embodiment of the backlight module of the present invention; FIG. 15 is a perspective view showing the eleventh embodiment of the backlight module of the present invention, and FIGS. 16 to 17 are schematic views showing the first embodiment of the method for manufacturing the light guide plate of the backlight module of the present invention. And FIG. 18 to FIG. 20 are schematic diagrams showing a second embodiment of a method of manufacturing a light guide plate for a backlight module of the present invention. [Description of main components] 1A The first embodiment of the backlight module of the present invention 1B The second embodiment of the backlight module of the present invention 1C The third embodiment of the backlight module of the present invention 1D The fourth embodiment of the backlight module of the present invention The fifth embodiment of the backlight module of the present invention is 1343l.doc -19. 201019003 The sixth embodiment of the backlight module of the present invention The seventh embodiment of the backlight module of the present invention The eighth embodiment of the backlight module of the present invention Ninth Embodiment of Inventing Backlight Module Tenth Embodiment of Backlight Module of the Invention The eleventh embodiment of the backlight module of the present invention is a liquid crystal panel
3 支架 4 支架 本發明用於背光模組之導光板之第一實施例 本發明用於背光模組之導光板之第二實施例 本發明用於背光模組之導光板之第三實施例 本發明用於背光模組之導光板之第四實施例 本發明用於背光模組之導光板之第五實施例 本發明用於背光模組之導光板之第六實施例The present invention is a second embodiment of a light guide plate for a backlight module. The third embodiment of the light guide plate for a backlight module of the present invention is a third embodiment of the present invention. The fourth embodiment of the invention relates to a light guide plate for a backlight module. The fifth embodiment of the light guide plate for a backlight module of the present invention
IF 1G 1H II 1J IK 2 11A 11B 11C 11D 11E 11F 11G 11H 111 11J 11L 11M 12 13 14 本發明用於背光模組之導光板之第七實施例 本發明用於背光模組之導光板之第八實施例 本發明用於背光模組之導光板之第九實施例 本發明用於背光模組之導光板之第十實施例 導光板 導光板 發光源 反射膜 光學膜 134310.doc -20- 201019003 111 出 光 面 112 底 面 113 集 光 纖 器 114 光 纖 115 第 一 側 邊 116 第 二 側 邊 1111 凹 槽 1112 第 一 凹 槽 1113 第 二 凹 槽 1114 第 三 凹 槽 Wi 第 _ _ 側 壁 w2 第 二 側 壁 134310.doc -21IF 1G 1H II 1J IK 2 11A 11B 11C 11D 11E 11F 11G 11H 111 11J 11L 11M 12 13 14 The seventh embodiment of the present invention is used for a light guide plate of a backlight module. EMBODIMENT OF THE INVENTION Ninth Embodiment of Light Guide Plate for Backlight Module of the Invention The light guide plate of the light guide plate of the present invention is used for a light guide plate light source reflective film optical film 134310.doc -20- 201019003 111 Light exit surface 112 bottom surface 113 collector fiber 114 fiber 115 first side 116 second side 1111 groove 1112 first groove 1113 second groove 1114 third groove Wi _ _ side wall w2 second side 134310.doc -twenty one