、M317584 八、新型說明： 【新型所屬之技術領域】 本創作係有關於導光板，尤其有關於一種降低光能損 耗之導光板。 【先前技術】 液晶顯示器（Liquid crystal displayer ; LCD)需要一 背光模組(Back light module)以提供所需之顯示光源，背 光模組包含光源（Light source)、導光板(Light guide plate)、擴散膜(Diffuser)、菱鏡片（prism Sheet)、反射 板(reflector)等，其中主要係藉由導光板將原本為點光源 或線光源之光源轉換為面光源，其目的在於提供一中心輝 度較南且均勻的面光源’以作為液晶顯示器之顯示光源。 為了提供中心輝度較高且均勻的面光源，導光板上設 计有各式各樣光學網點之微結構，其目的在於將光源做適 度的散射與導引，一方面提高顯示光源的均勻性，另一方 面增加光源的利用效率並提升中心輝度，以提供液晶顯示 器所需之顯不光源。 一般來說，導光板的厚度愈高，可設置更多的光學網 點’其讓光源經過更多次的散射，而提高整體的均勻度， 但是，多次的散射亦會導致光能的耗損，其會降低光源的 利用效率，並產生令人困惱的廢熱，而為了使亮度達到液 晶顯示器的需求，其必須增加原本光源的亮度，才能使最 終的顯示光源符合所需，然更強的光源代表會帶來更多的 熱量，並提高其製造成本、降低光源的壽命，顯然其並不 -M317584 符合液晶顯示器的需求。 【新型内容】 、爰此，本創作之主要目的在於縮短光源在導光板内傳 遞路徑’崎低絲損耗來可提高光源的彻效率，同時 降低系統廢熱。 本創作係為一種降低光能損耗之導光板，其包含一平 板狀之本體，該本體具有設於側邊之一入光面與平板面上 之-出光面，該人光面係供人射—光源，以於該出光面射 出-顯示光源，該人光面設有複數v型凹槽，且該v型凹 槽的軸向方向與該出光面的法線方向係概成垂直。 據此，由該入光面入射之光源，會被該v型凹槽所折 射與導引，而被導向且快速由該出光面射出而作為顯示光 源，據而減少光源在導光板内傳遞路徑。 【實施方式】 為俾使貴委員對本創作之特徵、目的及功效，有著 更加深入之瞭解與認同，茲列舉一較佳實施例並配合圖式 說明如后： 請參閱「第1圖」與「第2-1圖」所示，本創作係為 一種降低光能損耗之導光板’其包含一平板狀之本體1〇 = 該本體10具有設於侧邊之一入光面u與平板面上之一出 光面12，該入光面11係入射一光源，以於該出光面12射 出一顯示光源，該光源係可由設置在該入光面n之至少一 發光二極體30所提供。 又該入光面11設有複數V型凹槽2〇，且該ν型凹样M317584 VIII. New Description: [New Technology Field] This creation is about light guides, especially for a light guide that reduces light energy loss. [Prior Art] A liquid crystal display (LCD) requires a backlight module to provide a desired display light source. The backlight module includes a light source, a light guide plate, and a diffusion. a film (Diffuser), a prism sheet, a reflector, etc., wherein a light source originally used as a point source or a line source is converted into a surface source by a light guide plate, the purpose of which is to provide a central luminance. And a uniform surface light source 'as a display light source for liquid crystal displays. In order to provide a high-uniform and uniform surface light source, the light guide plate is provided with various microstructures of optical dots, the purpose of which is to moderately scatter and guide the light source, and to improve the uniformity of the display light source. On the other hand, the utilization efficiency of the light source is increased and the central luminance is increased to provide a display light source required for the liquid crystal display. In general, the higher the thickness of the light guide plate, the more optical dots can be set up, which allows the light source to scatter more times, thereby improving the overall uniformity. However, multiple scattering also causes loss of light energy. It will reduce the utilization efficiency of the light source and generate annoying waste heat, and in order to achieve the brightness of the liquid crystal display, it must increase the brightness of the original light source, so that the final display light source meets the needs, but a stronger light source. The representative will bring more heat, increase its manufacturing cost, and reduce the life of the light source. Obviously it is not -M317584 meets the needs of liquid crystal displays. [New content] Therefore, the main purpose of this creation is to shorten the transmission path of the light source in the light guide plate, which can improve the efficiency of the light source and reduce the waste heat of the system. The present invention is a light guide plate for reducing the loss of light energy, and comprises a flat body having a light-emitting surface disposed on one of the side of the light-incident surface and the flat surface, and the light surface is for human shooting. a light source for emitting the light source to the light-emitting surface, wherein the human light surface is provided with a plurality of v-shaped grooves, and an axial direction of the v-shaped groove is perpendicular to a normal direction of the light-emitting surface. Accordingly, the light source incident from the light incident surface is refracted and guided by the v-shaped groove, and is guided and quickly emitted from the light exit surface as a display light source, thereby reducing the transmission path of the light source in the light guide plate. . [Embodiment] In order to give your members a deeper understanding and recognition of the features, purposes and effects of this creation, a preferred embodiment is illustrated with the following description: Please refer to "Figure 1" and " As shown in Fig. 2-1, the present invention is a light guide plate for reducing the loss of light energy, which comprises a flat body 1 〇 = the body 10 has a light incident surface u and a flat surface provided on one side of the side A light-emitting surface 12 is incident on a light source to emit a display light source on the light-emitting surface 12, and the light source can be provided by at least one light-emitting diode 30 disposed on the light-incident surface n. Further, the light incident surface 11 is provided with a plurality of V-shaped grooves 2〇, and the v-shaped concave shape
M317584 的輔向方向與該出光面的法線方向係概成垂直。據 、由該入光面11入射之光源，被該V型凹槽2〇所折射， 而被導向快迷由導光板的出光面12射㈣作為顯示光 源，即可減少光源在導光板内傳遞路徑。 另请參閲「第2-2 ®」麻，本創作之導光板，其 型凹槽20係由一第一斜面21與一第二斜面22所構成，且 該第-斜面21與-第二斜面22的夾角A介於別度到吻 度之間，又該第-斜面21較該第二斜面22靠近該出光面 12 ’且該第一斜面21的長度小於該第二斜Φ 22，如此， 由該入光面11人射之光源，經過該v型凹槽2G之第一斜 面21與該第二斜面22的導引之後，光源朝該出光面12彎 折的角度會更大’亦即會再縮短在導光板内部的路徑，而 進一步減少光能損耗。 工 如上所述，本創作係藉由V型凹槽20的設置，適當的 導引光源的行進方向，以縮短光源在導光板内傳遞路徑， 因而減少光能的耗損，其不但可降低廢熱之產生，同時可 以節省能源之消耗，降低使用成本。 綜上所述僅為本創作之較佳實施例而已，並非用來限 定本創作之實施範圍，即凡依本創作申請專利範圍所做的 均等變化與修飾，皆為本創作申請專利範圍所涵蓋。 【圖式簡單說明】 第1圖，係本創作導光板之外觀圖。 第2-1圖，係本創作導光板結合光源之示意圖。 第2-2圖，係本創作V型凹槽之尺吋示意圖。 .M317584 【主要元件符號說明】 A :爽角 10 :本體 11 :入光面 12 :出光面 20 : V型凹槽 21 :第一斜面 22 :第二斜面 30 :發光二極體The auxiliary direction of the M317584 is perpendicular to the normal direction of the illuminating surface. According to the light source incident on the light incident surface 11, the light source is refracted by the V-shaped groove 2, and is guided by the light-emitting surface 12 of the light guide plate as a display light source, thereby reducing the light source to be transmitted in the light guide plate. path. Please also refer to "2-2 ®" hemp. The light guide plate of the present invention has a groove 20 formed by a first inclined surface 21 and a second inclined surface 22, and the first inclined surface 21 and the second The angle A of the inclined surface 22 is between the other degrees and the degree of kiss, and the first inclined surface 21 is closer to the light exit surface 12 ′ than the second inclined surface 22 and the length of the first inclined surface 21 is smaller than the second oblique Φ 22 . The light source that is incident on the light-incident surface 11 passes through the first inclined surface 21 of the v-shaped groove 2G and the second inclined surface 22, and the angle at which the light source is bent toward the light-emitting surface 12 is larger. That is, the path inside the light guide plate is further shortened, and the optical energy loss is further reduced. As described above, the present invention appropriately guides the traveling direction of the light source by the arrangement of the V-shaped groove 20, so as to shorten the transmission path of the light source in the light guide plate, thereby reducing the loss of light energy, which not only reduces the waste heat. It can save energy consumption and reduce the cost of use. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of implementation of the present invention, that is, the equal changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the patent application. . [Simple description of the drawing] Figure 1 is an external view of the light guide plate. Figure 2-1 is a schematic diagram of the light guide plate combined with the light source. Figure 2-2 is a schematic diagram of the size of the V-shaped groove. .M317584 [Description of main component symbols] A: Refreshing angle 10: Main body 11: Light-incident surface 12: Light-emitting surface 20: V-shaped groove 21: First inclined surface 22: Second inclined surface 30: Light-emitting diode