AOC-05-14-TW M287952 八、新型說明： 【新型所屬之技術領域】 本創作係有關一種發光二極體直下式背光模組之光學 擴政片，尤指一種在光學片表面印刷擴散面之設計者。 【先前技術】 按，使用發光二極體之背光模組，由於具備Γ高細膩 度」、「高輝度」、「無水銀」、「高色再現性」等特點，因此相 較/々陰極燈管 CCFL(Cold Cathode Fluorescent Lamp)更 月b夠賦予液晶面板更高的附加價值，且符合無水銀公害之環 保訴求。另，根據光源之位置，背光模組可分為直下式背光模 組或側光式背光模組；其中，直下式背光模組之光利用效率 車乂佳，可應用於較高亮度需求或大尺寸之顯示面板。 次按，直下式背光模組之架構包括一擴散板、一反射板 以及设置於該兩者間之複數個光源；而使用發光二極體之直 下式背光模組，為改善使用擴散板不佳之散光程度，乃有人 於擴散板表面形成折射微結構，藉以提高背光模組整體亮度 之均勻性；但因微結構之角度對光線之透出率有著非常敏感 之特性，如欲以角度控制光線透出率之均勻性是一件非常不 容易的事情，且在加工製造方面也難達到如此精密之控制。 【新型内容】 創作之主要目的，係欲解決先前技術亮度均勻性難以 控制且加工不易之問題，而具有亮度均勻控制性佳且易於加 工之功效。 為達上述功效，本創作之結構特徵，係於一諸如透明 -5-AOC-05-14-TW M287952 VIII. New Description: 【New Technical Fields】 This is a kind of optical expansion film for a light-emitting diode direct-lit backlight module, especially one that spreads the surface of the optical sheet. The designer. [Prior Art] Pressing, the backlight module using the light-emitting diode has the characteristics of high purity, high brightness, no mercury, high color reproducibility, etc. The CCFL (Cold Cathode Fluorescent Lamp) can give the LCD panel a higher added value and meet the environmental appeal of mercury-free public pollution. In addition, according to the position of the light source, the backlight module can be divided into a direct-lit backlight module or an edge-lit backlight module; wherein the direct-lit backlight module has good light utilization efficiency and can be applied to higher brightness requirements or large Size display panel. The structure of the direct-lit backlight module includes a diffusing plate, a reflecting plate and a plurality of light sources disposed between the two; and the direct-type backlight module using the light-emitting diode is used to improve the use of the diffusing plate. The degree of astigmatism is formed by the formation of a refractive microstructure on the surface of the diffusing plate to improve the uniformity of the overall brightness of the backlight module. However, the angle of the microstructure is very sensitive to the transmittance of the light, such as controlling the light through the angle. The uniformity of the rate of output is a very difficult task, and it is difficult to achieve such precise control in manufacturing. [New content] The main purpose of the creation is to solve the problem that the prior art brightness uniformity is difficult to control and the processing is difficult, and the brightness has uniform controllability and is easy to process. In order to achieve the above effects, the structural features of this creation are based on a transparent -5-
M287952 AOC-05-14-TW 板、擴散板或霧化板之光學片上表面，印刷有散光之擴散面。 【實施方式】 首先，請參閱第一、二圖所示，本創作係於一光學片（1〇) 之上表面，對應設置於反射板（20)之各發光二極體（3〇)正上 方，皆印刷有散光之擴散面（11)者。其中，該光學片（1〇)為透 ' 明板、擴散板或霧化板。 基於如是之構成，本創作可藉由光學片（10)上表面所印 刷之擴散面（11)，降低光線之透出率，將發光二極體（3〇)中央 • 過強之光束打散，配合反射板（20)之反射，提高背光模組整體 免度之均勻性；藉此，可減少擴散板之數量及二次光學設計， 並具有壳度均勻控制性佳且易於加工之功效。 、、不上所述，本創作所揭示之構造，為昔所無，且確能達到 預期之功效，並具可供產業利用性，完全符合新型專利要件， 祈请貴審查委員核賜專利，以勵創新，無任德感。 惟，上述所揭露之圖式、說明，僅為本創作之較佳實施例, $凡热悉此項技藝人士，依本案精神範疇所作之修飾或等效 • 變化，仍應包括在本案中請專利範圍内。 -6 -M287952 AOC-05-14-TW The upper surface of the optical sheet of the plate, diffuser or atomizing plate is printed with a diffusing diffusing surface. [Embodiment] First, as shown in the first and second figures, the creation is on the upper surface of an optical sheet (1〇), corresponding to each of the light-emitting diodes (3〇) disposed on the reflector (20). Above, all of them are printed with a diffuse diffusing surface (11). Wherein, the optical sheet (1 〇) is a transparent plate, a diffusion plate or an atomizing plate. Based on the configuration, the creation can reduce the light transmittance by the diffusion surface (11) printed on the upper surface of the optical sheet (10), and break the light beam of the center of the light-emitting diode (3〇). With the reflection of the reflector (20), the uniformity of the overall freedom of the backlight module is improved; thereby, the number of the diffusion plates and the secondary optical design can be reduced, and the shell degree uniform control property is good and the processing is easy. As stated above, the structure revealed by this creation is unprecedented, and it can achieve the expected effect, and it can be used for industrial use. It fully complies with the new patent requirements, and asks the review committee to grant the patent. Inspire innovation, no sense of morality. However, the above-mentioned drawings and descriptions are only preferred embodiments of the present invention. Anyone who is familiar with the skill of the art, based on the spirit of the case, or the equivalents and changes should still be included in the case. Within the scope of the patent. -6 -
AOC-05-14-TW M287952 【圖式簡單說明】 * 第一圖係本創作之結構正面說明圖。 第二圖係本創作之結構側面說明圖（第一圖中2-2斷面 剖視）。 【主要元件符號說明】 (10) 光學片 (11) 擴散面 (20)反射板 • (3〇)發光二極體AOC-05-14-TW M287952 [Simple description of the diagram] * The first picture is a front view of the structure of this creation. The second figure is a side view of the structure of the creation (section 2-2 in the first figure). [Explanation of main component symbols] (10) Optical sheet (11) Diffusion surface (20) Reflector • (3〇) light-emitting diode
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