Ί299423 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種背光模組，特別是有關於一種小型化且 薄型化之背光模組。 【先前技術】 在一般的液晶顯示裝置之背光模組中，通常係以冷陰極燈管 en作為光源，近年來，基於小型化和耐衝擊性等因素，逐漸以發光 二極體等小型的光源取代。 第1圖係為習知利用發光二極體作為光源的背光模組的示意 圖，在第1圖中，背光模組100具有三個發光二極體110作為光 ， 源，發光二極體U0所產生之光經由導光板丨20之導光區域121 而被導引至導光板120之顯示區域122中，標號130係為用以支 持發光二極體110和導光板120的支架。 為了減少發光二極體的設置數量，另一種背光模組被提出， 讀^如第2a和2b圖所示，背光模組2〇〇具有一發光二極體210和一 導光板220 ;參考第2a圖，發光二極體210係設置於導光板220 之角落，且所產生之光經由導光區域222和223而被導引至顯示 區域221中。 然而’由於發光二極體210係被設置於導光板220之角落， 、 這將使得導光板220需在兩個側邊設置導光區域，而增大了導光 ， 板的面積；另外，參考第2b圖，發光二極體210係被設置於導 光板220之下方，這將使得背光模組200之整體厚度增大，而無 0632-A50460-TWf -¢0 1299423 法達到薄型化的目的。 【發明内容】 有鑑於此，本發明之目的在於提供一種小型化且薄型化之背 光模組。 根據本發明，提供一種背光模組，包括一導光板以及一光 源，其中導光板具有一第一側邊以及與第一側邊連接的一第二側 邊，且在第二側邊上形成有一凸耳，且凸耳具有一入光面；光源 以面對凸耳之入光面的方式被設置，而凸耳之入光面係與第二側 邊連接。 在一較佳實施例中，導光板具有一出光面，且在出光面上具 有複數個圖案；又，圖案越遠離凸耳之入光面的密度或面積越 大，而形狀係包含線形、圓形、橢圓形、三角形、多邊形、凸出 ^ 狀或凹入狀；另外，導光板之厚度在靠近凸耳之入光面處大於遠 . 離凸耳之入光面處。 又，凸耳之入光面可為一曲面或部分曲面。 應了解的是凸耳之入光面係不與第一側邊連接，且凸耳的形 0^ 狀可為鈍角三角形；又，光源和導光板係位於同一水平面上，且 光源可為一發光二極體。 又在本發明中，提供一種背光模組，包括一導光板以及一光 源，其中導光板具有一第一側邊以及與第一側邊連接的一第二側 邊，在第二側邊上形成有一凸耳，且凸耳和第一側邊的延長線之 - 間形成一缺口，而光源則設置於缺口中。 • 在一較佳實施例中，缺口面對光源邊可為一曲面或部分曲 面。 0632-A50460-TWf 6 1299423 又在本發明中，提供一種液晶顯示裝置，包括上述背光模組 以及設置於背光模組上的一液晶面板。 為了讓本發明之上述和其他目的、特徵、和優點能更明顯易 懂，下文特舉一較佳實施例，並配合所附圖示，作詳細說明如下。 【實施方式】Ί 299423 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, and more particularly to a miniaturized and thinned backlight module. [Prior Art] In a backlight module of a general liquid crystal display device, a cold cathode lamp en is generally used as a light source. In recent years, based on factors such as miniaturization and impact resistance, a small light source such as a light-emitting diode has been gradually used. Replace. FIG. 1 is a schematic diagram of a conventional backlight module using a light-emitting diode as a light source. In FIG. 1 , the backlight module 100 has three light-emitting diodes 110 as light, source, and light-emitting diode U0. The generated light is guided to the display region 122 of the light guide plate 120 via the light guiding region 121 of the light guide plate 20, and the reference numeral 130 is a bracket for supporting the light emitting diode 110 and the light guide plate 120. In order to reduce the number of LEDs, another backlight module is proposed. As shown in Figures 2a and 2b, the backlight module 2 has a light-emitting diode 210 and a light guide 220. 2a, the light emitting diode 210 is disposed at a corner of the light guide plate 220, and the generated light is guided into the display region 221 via the light guiding regions 222 and 223. However, since the light-emitting diodes 210 are disposed at the corners of the light guide plate 220, this will cause the light guide plate 220 to be provided with light guiding regions on both sides, thereby increasing the area of the light guide and the board; In FIG. 2b, the light-emitting diode 210 is disposed under the light guide plate 220, which will increase the overall thickness of the backlight module 200 without the use of the 0632-A50460-TWf-¢0 1299423 method for thinning. SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a backlight module that is small and thin. According to the present invention, a backlight module includes a light guide plate and a light source, wherein the light guide plate has a first side and a second side connected to the first side, and a second side is formed on the second side The lug has a light-incident surface; the light source is disposed to face the light-incident surface of the lug, and the light-incident surface of the lug is connected to the second side. In a preferred embodiment, the light guide plate has a light exiting surface and has a plurality of patterns on the light exiting surface; further, the density or area of the light incident surface away from the lug is larger, and the shape includes a line shape and a circle. The shape, the ellipse, the triangle, the polygon, the convex shape or the concave shape; in addition, the thickness of the light guide plate is greater than the far side of the lug surface of the lug. Moreover, the light entrance surface of the lug can be a curved surface or a partial curved surface. It should be understood that the light entrance surface of the lug is not connected to the first side edge, and the shape of the lug may be an obtuse triangle; in addition, the light source and the light guide plate are on the same horizontal plane, and the light source may be a light source. Diode. Further, in the present invention, a backlight module includes a light guide plate and a light source, wherein the light guide plate has a first side and a second side connected to the first side, and is formed on the second side There is a lug, and a gap is formed between the lug and the extension of the first side, and the light source is disposed in the notch. • In a preferred embodiment, the notch facing the source edge can be a curved or partial curved surface. Further, in the present invention, a liquid crystal display device including the above backlight module and a liquid crystal panel disposed on the backlight module is provided. The above and other objects, features, and advantages of the present invention will become more apparent and understood. [Embodiment]
參考第3a圖，本發明之背光模組1包括一導光板10以及一 光源20，應了解的是背光模組更包括反射板和擴散板等其他元 件，但由於反射板和擴散板等其他元件與習知背光模組相同，在 此省略其圖示及相關說明。 導光板10具有一第一側邊11以及與第一側邊11連接的一 第二側邊12，且在第二側邊12上形成有一凸耳13 ;凸耳13具 有一入光面13a，且和第一側邊11的延長線之間形成一缺口 15; 又，導光板10具有一出光面16，如第3b圖所示，且在出光面 16上具有複數個圖案（pattern)14。 光源20係以面對凸耳13之入光面13a的方式被設置於缺口 15中，且可為一發光二極體；又，如第3a圖所示般，由於凸耳 13之入光面13a係與第二側邊12連接，而不是與第一側邊11 連接，藉此使光源20並非位於第一侧邊11和第二側邊12的轉 角處，而可被内縮於第一側邊11之内，進而可使背光模組1小 型化。 又，在第3a圖中，凸耳13的形狀係為四邊形，但並不限於 此，也可如第4圖所示之背光模組Γ般，導光板10’之凸耳13’ 的形狀係為一鈍角三角形；另外，雖然圖案14之形狀在第3a 圖中係為圓形，但並不限於此，也可為線形、橢圓形、三角形、 0632-A50460-TWf 7 ⑧Referring to FIG. 3a, the backlight module 1 of the present invention includes a light guide plate 10 and a light source 20. It should be understood that the backlight module further includes other components such as a reflector and a diffusion plate, but other components such as a reflector and a diffusion plate. The same as the conventional backlight module, the illustration and related description are omitted here. The light guide plate 10 has a first side edge 11 and a second side edge 12 connected to the first side edge 11, and a lug 13 is formed on the second side edge 12; the lug 13 has a light incident surface 13a. And a gap 15 is formed between the extension line of the first side 11; and the light guide plate 10 has a light-emitting surface 16, as shown in FIG. 3b, and has a plurality of patterns 14 on the light-emitting surface 16. The light source 20 is disposed in the notch 15 in such a manner as to face the light incident surface 13a of the lug 13, and may be a light emitting diode; and, as shown in FIG. 3a, due to the light entrance surface of the lug 13 13a is connected to the second side 12 instead of the first side 11, whereby the light source 20 is not located at the corner of the first side 11 and the second side 12, but can be retracted to the first Within the side edge 11, the backlight module 1 can be miniaturized. Further, in the third embodiment, the shape of the lug 13 is a quadrangular shape, but the shape is not limited thereto, and the shape of the lug 13' of the light guide plate 10' may be the same as that of the backlight module shown in FIG. It is an obtuse triangle; in addition, although the shape of the pattern 14 is circular in the 3a figure, it is not limited thereto, and may be a line shape, an ellipse shape, a triangle shape, and 0632-A50460-TWf 7 8
1299423 或多邊形，且可為凸出狀或凹入狀。 又，在第3a圖中，圖案14越遠離凸耳13之入光面13a(亦 即，遠離缺口 15)的密度越大，但並不限於此，也可以圖案14 越遠離凸耳13之入光面13a(亦即，遠離缺口 15)的面積越大的 方式設置；另外，在第3b圖中，導光板10整體係為均一厚度， 但並不限於此，也可使導光板10之厚度在靠近凸耳13之入光面 13a(亦即，靠近缺口 15)處大於遠離凸耳13之入光面13a(亦即， 遠離缺口 15)處。 又，應了解的是雖然在第3a、3b、和4圖中，入光面13a係 為一平面，但並不限於此，也可為一曲面（如第5a和5b圖所示） 或部分曲面（如第5c和5d圖所示），亦即，缺口 15面對光源20 之側邊可為一曲面或部分曲面。 另外，由於光源20係設置於導光板10之缺口 15中，光源 20和導光板10係位於同一水平面上，如第3b圖所示，藉此可 使背光模組1薄型化。 如上述，由於光源並非位於導光板的轉角處，而可被内縮於 側邊内，進而可使背光模組小型化；又，由於光源和導光板係位 於同一水平面上，藉此可使背光模組薄型化。 又，應了解的是如果將一液晶面板設置於上述背光模組1 上，即可構成一液晶顯示裝置。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定本 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 可作些許之更動與潤飾，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。 0632-A50460-TWf 8 1299423 【圖式簡單說明】 第1圖係為一種習知背光模組之示意圖； 第2a和2b圖係為另一種習知背光模組之示意圖； 第3a圖係為本發明之背光模組之一實施例之正面示意圖； 第3b圖係為第3a圖中之背光模組之侧面示意圖； 以及 第4圖係為本發明之背光模組之另一實施例之正面示 第5a〜5d圖係為本發明之導光板之入光面之變形例之轉圖 【主要元件符號說明】 1、1’〜背光模組； 1〇、1〇，〜導光板； 11〜第一側邊； 12〜第二側邊； 13、13’〜凸耳； 13a〜入光面； 14〜圖案； 15〜缺口； 16〜出光面； 20〜光源； 100〜背光模組； 110〜發光二極體； 120〜導光板； 121〜導光區域； 122〜顯示區域； 130〜支架； 200〜背光模組； 0632-A50460-TWf ^1299423 210〜發光二極體； 220〜導光板； 221〜顯示區域； 222、223〜導光區域。1299423 or polygon, and can be convex or concave. Moreover, in FIG. 3a, the density of the pattern 14 away from the light-incident surface 13a of the lug 13 (that is, away from the notch 15) is larger, but it is not limited thereto, and the pattern 14 is further away from the lug 13 The area of the light surface 13a (that is, the distance from the notch 15) is larger. In addition, in the third embodiment, the light guide plate 10 has a uniform thickness as a whole, but is not limited thereto, and the thickness of the light guide plate 10 can also be made. At a position closer to the light entrance surface 13a of the lug 13 (i.e., near the notch 15) than at the light entrance surface 13a away from the lug 13 (i.e., away from the notch 15). Moreover, it should be understood that although in the 3a, 3b, and 4, the light incident surface 13a is a flat surface, it is not limited thereto, and may be a curved surface (as shown in Figures 5a and 5b) or a portion. The curved surface (as shown in Figures 5c and 5d), that is, the side of the notch 15 facing the light source 20 may be a curved surface or a partial curved surface. Further, since the light source 20 is disposed in the notch 15 of the light guide plate 10, the light source 20 and the light guide plate 10 are located on the same horizontal surface, as shown in Fig. 3b, whereby the backlight module 1 can be made thinner. As described above, since the light source is not located at the corner of the light guide plate, it can be retracted into the side edge, thereby miniaturizing the backlight module; and, since the light source and the light guide plate are on the same horizontal surface, the backlight can be made thereby The module is thin. Moreover, it should be understood that if a liquid crystal panel is disposed on the backlight module 1, a liquid crystal display device can be constructed. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. 0632-A50460-TWf 8 1299423 [Simplified Schematic] FIG. 1 is a schematic diagram of a conventional backlight module; FIGS. 2a and 2b are schematic diagrams of another conventional backlight module; A front view of one embodiment of a backlight module of the present invention; a third side view of the backlight module of FIG. 3a; and a fourth front view of another embodiment of the backlight module of the present invention 5A to 5d are diagrams showing a modification of the light-incident surface of the light guide plate of the present invention. [Main component symbol description] 1. 1'~backlight module; 1〇, 1〇, ~ light guide plate; 11~ One side; 12 to the second side; 13, 13' ~ lug; 13a ~ light into the surface; 14 ~ pattern; 15 ~ notch; 16 ~ light surface; 20 ~ light source; 100 ~ backlight module; Light-emitting diode; 120~ light guide plate; 121~ light guide area; 122~ display area; 130~ bracket; 200~ backlight module; 0632-A50460-TWf ^1299423 210~ light-emitting diode; 220~ light guide plate; 221~ display area; 222, 223~ light guide area.
0632-A50460-TWf0632-A50460-TWf