M332206 八、新型說明： 【新型所屬之技術領域】 本創作是關於一種導光板，且特別是關於一種具有弧狀凹样的導 光板。 【先前技術】 近年來，傳統的陰極射線管顯示器（即俗稱的CRT顯示界、） 已漸漸地被液晶顯示器所取代，主要原因在於液晶顯示器所釋 放出的輻射量遠遠小於CRT顯示器，且液晶顯示器在這幾年 φ 的製造成本也顯著地降低。一般來說，液晶顯示器包括背光模 組與液晶面板兩大部分，而背光模組的主要功用在於提供光源 供液晶顯示器使用。 一般來說，背光模組主要是由光源、導光板、反射片 (reflective sheet)、擴散膜與增亮膜所組成。光源例如為冷陰極 螢光燈管（Cold Cathode Fluorescent Lamps)，導光板的作用在 於引導光線的傳輸方向，使光線從導光板的出光面均勻射出， 此導光板之入光面為一平面。反射片設置於導光板的底面，以 鲁將由導光板的底面出射之光線再次反射入導光板内，進而提高 光線的利用效率。擴散膜與增亮膜則依次設置在導光板的出光 面側’擴散膜是用於使光線分佈地更佳均勻，而增亮膜則是用 以聚光’以增加液晶顯不器的輝度。 然而，光線從光源射出後會經過種種不同的光學元件，由於 光學元件之材質或多或少會吸收光線的能量，因此從光源射出 的能量不能有效地被利用。因此，如何使光源射出的能量可更 有效地被利用，是值得本領域具有通常知識者去思量地。 M332206 、【新型内容】 本;U作主要目的係提供—種導光板，此導光板能有效地提高背光 模組的光強度。 為了達成上述目的與其他目的，本創作提供一種導光板， i於ϋΓ81柱狀的燈管。，導光板的至少—測具有一孤狀凹 槽，忒弧狀凹槽的曲率中心與燈管的軸心相重合。 於上述之導光板中，弧狀凹槽是設置在導光板之兩側。 =^成上述目的與其他目的’本創作提供―種背光模組，此背 二^至少—燈賴—導光板，此辭呈難狀且配置在導光板 :^而且’導光板的人細具有—弧狀凹槽， 中心與燈管的軸心相重合。 _1曰_早 的兩述犧獅，編，糊·導光板 於上述之背光模組中，更包括一燈罩， 表面，且該燈罩醜著燈管。 罩的内表面為一反射 ，上狀縣模财，更包括二個絲擴 配置在該導光板的出光面。 尤予擴政膜 由於補狀導光_至少—測具有—弧狀 心触f的轴心相重合’ _模擬結果，可知本=== 旎提咼背光模組的光強度。 +』作之¥先板 為使热悉該項技藝人士瞭解本創作之目的、 ，並配合所附之圖式，對本創作“二茲藉由 此背==實:罩r級一圖： 光板14、-下纖膜15及-上擴散膜16 f 片13、一導 吕U "又置在導光板14 M332206 本，側此燈I 11呈圓柱狀，且二個燈罩12分別圍繞著設置於導 = ί、14兩侧的燈管11。反射片13設置於導光板14的底面，以 ^光板14的底面出射之光線再次反射入導光板14内，進 光線的_效率。下擴散膜15與上擴散膜16則依次設 jr光，14的出光面142侧，以使光線分佈地更佳均勻。 :同0^參知圖1與圖2，圖2所繪示為本創作實施例的背光模組 局视大圖。其巾，導光板14的人細具有_弧狀凹槽⑷，此孤 总凹槽H1具有-曲率半#R1，在本實施例中R1=2·5職。另外，燈 & 11具有一半徑112，在本實施例中R2=L5mm。由圖2可知，燈管 11的軸心無狀叫141的解巾娟為C1，亦㈣们i的轴心與 二、凹槽⑷的曲率中心相重合。此外，燈罩1;2的内表面⑵為一反 表面亦即燈1 11所發出的光線會被内表Φ 121反射而導向導光板 14。而^，由圖2可知，燈罩12挾持反射片13與導光板μ。 立接著，請參照圖3，_ 3所繪示為實施例之比較例的背光模組的 邛分不意圖。在本比較例中，與實施例相同的元件標以相_ 此背光模組Γ的導光板14，之入光面141，為一平面，入光面^r 與燈管11的距離D為1_。 接著，創作人對本實施例與比較例之背光模組進 此光學模擬中，導光板14的長、寬、高分別被設定丁為先=^在 280mm、4.5_，且材質為聚曱基丙烯酸甲酯（p〇iymethyiM332206 VIII. New description: [New technical field] The present invention relates to a light guide plate, and more particularly to a light guide plate having an arc-shaped concave shape. [Prior Art] In recent years, conventional cathode ray tube displays (commonly known as CRT display circles) have gradually been replaced by liquid crystal displays. The main reason is that the amount of radiation emitted by liquid crystal displays is much smaller than that of CRT displays, and liquid crystals. The manufacturing cost of the display in the past few years has also been significantly reduced. Generally, a liquid crystal display includes a backlight module and a liquid crystal panel. The main function of the backlight module is to provide a light source for the liquid crystal display. Generally, the backlight module is mainly composed of a light source, a light guide plate, a reflective sheet, a diffusion film and a brightness enhancement film. The light source is, for example, a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamps). The light guide plate acts to guide the light to be transmitted in a direction to uniformly emit light from the light exit surface of the light guide plate. The light incident surface of the light guide plate is a flat surface. The reflection sheet is disposed on the bottom surface of the light guide plate, so that the light emitted from the bottom surface of the light guide plate is reflected into the light guide plate again, thereby improving the utilization efficiency of the light. The diffusion film and the brightness enhancement film are sequentially disposed on the light-emitting side of the light guide plate. The diffusion film is used to make the light distribution more uniform, and the brightness enhancement film is used to collect light to increase the brightness of the liquid crystal display. However, after the light is emitted from the light source, it passes through various optical elements. Since the material of the optical element absorbs the energy of the light more or less, the energy emitted from the light source cannot be effectively utilized. Therefore, how to make the energy emitted by the light source can be utilized more effectively is worthy of consideration by those who have ordinary knowledge in the field. M332206, [new content] This; U for the main purpose is to provide a kind of light guide plate, this light guide plate can effectively improve the light intensity of the backlight module. In order to achieve the above and other objects, the present invention provides a light guide plate, i. At least one of the light guide plates has a solitary groove, and the center of curvature of the arcuate groove coincides with the axis of the tube. In the above light guide plate, the arcuate grooves are disposed on both sides of the light guide plate. =^ For the above purposes and other purposes 'This creation provides a kind of backlight module, this back two ^ at least - lamp Lay - light guide plate, this remark is difficult and arranged in the light guide plate: ^ and the 'light guide plate is thin - The arcuate groove has a center that coincides with the axis of the tube. _1 曰 _ early two sacred lions, edited, paste, light guide plate in the above backlight module, including a lampshade, surface, and the lampshade ugly light tube. The inner surface of the cover is a reflection, and the upper county is made of mold, and further comprises two wires extending on the light-emitting surface of the light guide plate. Especially for the expansion of the film because the complementary light guide _ at least - measured with the arc-shaped heart contact f axis coincides ' _ simulation results, it can be seen that this === 旎 咼 咼 backlight module light intensity. + 』 ¥ 先 先 先 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为14, the lower fiber membrane 15 and the upper diffusion film 16 f piece 13, a guide Lu U " and placed on the light guide plate 14 M332206, the side lamp I 11 is cylindrical, and the two lampshades 12 are respectively arranged around The light guide tube 11 on both sides of the guide plate 14 is disposed on the bottom surface of the light guide plate 14, and the light emitted from the bottom surface of the light guide plate 14 is reflected again into the light guide plate 14, and the efficiency of the light entering is lowered. 15 and the upper diffusion film 16 are sequentially provided with jr light, 14 on the light-emitting surface 142 side, so that the light distribution is better and uniform. See also FIG. 1 and FIG. 2, FIG. 2 is a schematic embodiment of the present invention. The backlight module is a large view of the board. The towel, the light guide plate 14 has a thin arc-shaped groove (4), and the orphaned groove H1 has a curvature half #R1, in this embodiment, R1=2·5 In addition, the lamp & 11 has a radius 112, in the present embodiment, R2 = L5mm. As can be seen from Fig. 2, the axis of the tube 11 is 401, and the axis of the tube is C1, and (4) And two The center of curvature of the groove (4) coincides. Further, the inner surface (2) of the lamp cover 1; 2 is a reverse surface, that is, the light emitted by the lamp 11 11 is reflected by the inner surface Φ 121 to guide the light guide plate 14. It can be seen that the lamp cover 12 holds the reflection sheet 13 and the light guide plate μ. Next, please refer to FIG. 3, which is a schematic diagram of the backlight module of the comparative example of the embodiment. In this comparative example, The same components are labeled with the light guide plate 14 of the backlight module ,, and the light incident surface 141 is a plane, and the distance D between the light incident surface and the bulb 11 is 1_. Next, the creator pairs the present embodiment. In the optical simulation of the backlight module of the comparative example, the length, width and height of the light guide plate 14 are respectively set to be first = ^ at 280 mm, 4.5 _, and the material is polymethyl methacrylate (p〇iymethyi)
Methacrylate，簡稱：PMMA)。此外，燈管u的長度設為州腿， 功率為10W。另外，燈罩12的開口高度設為4 7mm，且其内表面121 則設為鏡面。除此之外，下擴散膜及上擴散膜^的厚'度設為 0.125mm ’而反射片13的厚度設為〇 2 mm。 經由模擬後，在實施例中，背光模組！之出光面的 8.1798W/m2。然而，在比較例中’ f光模組丨，之出絲的平均光=度 M332206 % 為7.9437W/m2。由此可知，本創作之導光板14可使整體背光模組的 光強度增加約3%。 ' 在本實施例中，導光板14的兩側均設有燈管u，但本領域具有 通常知識者也可視情況而只在其中一侧設置燈管。此外，在本實施例 中，導光板14的出光面142侧設有二片擴散膜（亦即··下擴散 膜15與上擴散膜16) ’但本領域具有通常知識者也可改成在導光板 14的出光面142上依序設置擴散臈與菱鏡片。另外，擴散板的 .材質除了為聚石炭酸酯（P〇lyCarb〇nate，簡稱：pC)、聚苯乙歸 (又 Polystyrene，簡稱·· PS )、聚丙烯（p〇lypr〇pene，簡稱忡）、 藝聚乙烯（P〇lyethylene，簡稱PE )或聚對苯二曱酸乙二酯 (polyethylene terephthalate，簡稱 PET ) 〇 綜上所述，本創作之導光板的至少一測具有一弧狀凹槽，且弧狀 凹槽的曲率巾心與燈管的軸心、相重合，經由模擬結果，可知 導光板能提高背光模組的光強度。 並非作6以具财酬鑛紅，财賴露的·實施例 範圍Γί ，任何熟悉此技藝者’在不脫離本創作之精神和 作之各=之更動與潤飾’其所作之更動與潤飾皆屬於本創 【圖單m 細倾伽^料纖圍所轉者為準。 圖1所％示為本創作實施例的背光模組之示意圖。 圖2所綠示為本創作實施例的背光模組之局部放大圖。 圖3所綠示為實施例之比較例的背光模組的部分示意圖。 【主要元件符號說明】 1·背光模組 U :燈管 8 M332206 12 :燈罩 121 :内表面 13 :反射片 14、14’ ：導光板 141、141’ ：弧狀凹槽 142 :出光面 15 :下擴散膜 16 :上擴散膜 R1 :曲率半徑 ► R2 :半徑 C1 :曲率中心、軸心 D :距離Methacrylate, referred to as: PMMA). In addition, the length of the lamp u is set to the state leg, and the power is 10W. Further, the opening height of the globe 12 is set to 4 7 mm, and the inner surface 121 thereof is set to be a mirror surface. In addition, the thickness of the lower diffusion film and the upper diffusion film was set to 0.125 mm', and the thickness of the reflection sheet 13 was set to 〇 2 mm. After the simulation, in the embodiment, the backlight module! The illuminating surface is 8.1798W/m2. However, in the comparative example, the average light = M332206% of the filament was 7.9437 W/m2. It can be seen that the light guide plate 14 of the present invention can increase the light intensity of the entire backlight module by about 3%. In the present embodiment, the lamps u are provided on both sides of the light guide plate 14, but those skilled in the art can also provide the lamps only on one side as the case may be. In addition, in the present embodiment, two diffusion films (ie, the lower diffusion film 15 and the upper diffusion film 16) are disposed on the light-emitting surface 142 side of the light guide plate 14 but can be modified in the prior art. A diffusing aperture and a diamond lens are sequentially disposed on the light emitting surface 142 of the light guide plate 14. In addition, the material of the diffuser is not only polycarbonate (P〇lyCarb〇nate, abbreviated as: pC), polystyrene (Polystyrene, PS), and polypropylene (p〇lypr〇pene, 忡), P〇lyethylene (PE) or polyethylene terephthalate (PET). In summary, at least one of the light guide plates of the present invention has an arc-shaped concave The groove and the curvature center of the arc-shaped groove coincide with the axis of the tube, and the simulation result shows that the light guide plate can improve the light intensity of the backlight module. It is not for the 6th to pay for the minerals, the scope of the example of the financial disclosure, 任何ί, any person who is familiar with this skill 'without the spirit of this creation and the changes and refinements of the work' Belonging to this creation [Figure single m fine tilting gamma ^ material fiber circumference will be subject to change. 1 is a schematic view of a backlight module of the present embodiment. 2 is a partially enlarged view of the backlight module of the present embodiment. FIG. 3 is a partial schematic view showing a backlight module of a comparative example of the embodiment. [Main component symbol description] 1. Backlight module U: Lamp 8 M332206 12: Lamp cover 121: Inner surface 13: Reflecting sheet 14, 14': Light guide plate 141, 141': Arc groove 142: Light exit surface 15: Lower diffusion film 16: Upper diffusion film R1: Curvature radius ► R2: Radius C1: Center of curvature, axis D: Distance