200937046 ，·九、發明說明： 【發明所屬之技術領域】 本發明係關於一種增光片及具有該增光片之背光模塊。 【先前技術】 目前各類液晶顯示器大多採用面板及背光模塊之組合 結構，背光模塊提供亮度均勻之面光源，面板對光線進行 調製以實現顯示之功能。背光模塊之光源廣泛採用冷陰極 螢光燈官，冷陰極螢光燈管藉由燈管兩端施加之高壓電源 誘發出紫外光，該紫外光激發燈管内表面之螢光層發出可 見光。隨著工藝要求之不斷提高，相關產品需要更長、更 細之冷陰極螢光燈管，使得於燈管内表面塗螢光層之生產 過程複雜度增加’成本增大。 【發明内容】 ^ 有鑒於此，有必要提供一種增光片及具有該增光片之 背光模塊，以降低背光模塊之生產成本。 〇 <本發明揭示了一種增光片，該增光片包括一基板、複 數叹置於該基板上表面之突起結構及一設置於該基板上之 螢光層。 “本發明還揭示了一種包含該增光片之背光模塊，該背 光核塊包括層迭設置之一上增光片、一下增光片、一擴散 片i二導光板、一反射片，一設置於該導光板邊側之光源 及°又置於該光源外側之光源反射罩，該下增光片包括一 基板，該基板上設置一螢光層。 該背光模塊中該下增光片上塗覆螢光層將紫外光轉化 為可見光，能降低材料成本’簡化製造工藝。 200937046 _·【實施方式】 請參閱圖1，本發明背光模塊之較佳實施方式包括從 上到下依次設置之一上增光片700、一下增光片600、一擴 散片500、一導光板400、一反射片300，一設置於該導光 板400邊側之光源100、一設置於該光源100外側之光源 反射罩200及一承載上述組件之外殼800。 該光源100在本實施方式中採用紫外線燈管或紫外線 發光二極體。該光源反射罩200包括一基板210及一設置 ❿於該基板210外表面之反射層220。該反射片300包括一 基板310及一設置於該基板310上之反射層320。該導光 板400包括一基板410及於該基板410底面經過蝕刻、切 割或者網點印刷等方式形成之複數網點結構420。該擴散 片500包括一基板510及一設置於該基板510上之擴散層 520。該下增光片600包括一基板610、設置於該基板610 上表面之突起結構620及一設置於該基板610下表面之螢 光層630，該基板610採用聚酯材料，該螢光層630採用螢 ©光粉材料，該突起結構620採用棱鏡結構，該螢光層630 之厚度可不均勻設置。該上增光片700包括一基板710及 一設置於該基板710上之增光層720。 該光源100發出紫外光，一部分紫外光直接從邊側射 入該導光板400，未能直接射入之紫外光經該光源反射罩 200、反射片300反射後射入該導光板400，該導光板400 將射入之紫外光轉換成面光，該擴散片500均勻擴散該面 光，該面光從該下增光片600之底部射入並經該螢光層630 激發出可見光，該突起結構620及上增光片700增加該可 200937046 ••見光之亮度。 以上為該下增光片600於邊側式背光模塊中之應用， 其也可應用於直下式背光模塊’基本原理相同，在此不再 贅述。 該螢光層630設置於該基板610之下表面上，該螢光 層630不僅能受激發出可見光，還能替代習知技術中之基 膜，降低成本。於另外一個實施方式中，該螢光層63〇也 可設置於該基板610之上表面上，但該基板61〇之下表面 ❹上還需塗覆一層基膜。 該背光模塊藉由將該螢光層630設置於該基板61〇 上，無需使用冷陰極螢光燈管，只採用普通之紫外光源， 製造工藝簡單，成本較低。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施方式，舉 凡熟悉本案技藝之人士，在爰依本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之申請專利範圍内。 / 【圖式簡單說明】 圖1係本發明背光模塊之較佳實施方式之示意圖。 【主要組件符號說明】 光源 100 光源反射罩 200 反射片 300 反射層 220 ' 320 導光板 400 基板 210、310、41〇 網點結構 420 擴散片 500 擴散層 520 上增光片 600 200937046 _· ·下增光片 700 基板 510 、 610 、 710 突起結構 620 螢光層 630 增光層 720 外殼 800 ο 9200937046, IX. Description of the Invention: [Technical Field] The present invention relates to a brightness enhancement sheet and a backlight module having the same. [Prior Art] At present, most of the liquid crystal displays adopt a combination of a panel and a backlight module, and the backlight module provides a surface light source with uniform brightness, and the panel modulates the light to realize the display function. The light source of the backlight module is widely used as a cold cathode fluorescent lamp. The cold cathode fluorescent lamp induces ultraviolet light by a high voltage power source applied from both ends of the lamp, and the ultraviolet light excites the fluorescent layer on the inner surface of the lamp to emit visible light. As process requirements continue to increase, related products require longer, thinner cold cathode fluorescent tubes, resulting in increased production complexity of the fluorescent layer on the inner surface of the tube. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a brightness enhancement sheet and a backlight module having the same to reduce the production cost of the backlight module. 〇 <The present invention discloses a brightness enhancement sheet comprising a substrate, a plurality of protrusion structures slanted on the upper surface of the substrate, and a phosphor layer disposed on the substrate. The present invention also discloses a backlight module including the brightness enhancement sheet, the backlight core block includes a light-increasing sheet, a lower brightness enhancement sheet, a diffusion sheet, a second light guide plate, and a reflection sheet, which are disposed on the layer. a light source on the side of the light plate and a light source reflector disposed on the outer side of the light source, the lower brightness enhancement sheet includes a substrate, and a fluorescent layer is disposed on the substrate. The backlight module is coated with a fluorescent layer on the lower brightness enhancement sheet to be ultraviolet. The light is converted into visible light, which can reduce the material cost. Simplified manufacturing process. 200937046 _·[Embodiment] Referring to FIG. 1 , a preferred embodiment of the backlight module of the present invention includes sequentially setting one of the brightness enhancement sheets 700 from top to bottom. a light-increasing sheet 600, a diffusion sheet 500, a light guide plate 400, a reflection sheet 300, a light source 100 disposed on the side of the light guide plate 400, a light source reflection cover 200 disposed outside the light source 100, and a device carrying the assembly The light source 100 is an ultraviolet light tube or an ultraviolet light emitting diode in the embodiment. The light source reflective cover 200 includes a substrate 210 and a surface disposed on the outer surface of the substrate 210. The reflective sheet 220 includes a substrate 310 and a reflective layer 320 disposed on the substrate 310. The light guide plate 400 includes a substrate 410 and is formed by etching, cutting or dot printing on the bottom surface of the substrate 410. The plurality of dot structures 420. The diffusion sheet 500 includes a substrate 510 and a diffusion layer 520 disposed on the substrate 510. The lower brightness enhancement sheet 600 includes a substrate 610, a protrusion structure 620 disposed on the upper surface of the substrate 610, and a setting The fluorescent layer 630 is disposed on the lower surface of the substrate 610. The substrate 610 is made of a polyester material. The fluorescent layer 630 is made of a fluorescent material. The protruding structure 620 has a prism structure, and the thickness of the fluorescent layer 630 can be unevenly disposed. The upper brightness enhancement sheet 700 includes a substrate 710 and a brightness enhancement layer 720 disposed on the substrate 710. The light source 100 emits ultraviolet light, and a part of the ultraviolet light is directly incident from the side to the light guide plate 400, and is not directly incident thereon. The ultraviolet light is reflected by the light source reflection cover 200 and the reflection sheet 300 and is incident on the light guide plate 400. The light guide plate 400 converts the incident ultraviolet light into a surface light, and the diffusion sheet 500 uniformly diffuses the surface light. The light is incident from the bottom of the lower brightness enhancing sheet 600 and excites visible light through the fluorescent layer 630. The protruding structure 620 and the upper brightness enhancing sheet 700 increase the brightness of the visible light. The above is the brightness enhancing sheet 600. The application of the edge type backlight module can also be applied to the direct type backlight module. The basic principle is the same, and the details are not described herein. The phosphor layer 630 is disposed on the lower surface of the substrate 610, and the phosphor layer 630 is not only The light-emitting layer can be used to replace the base film in the prior art, and the cost can be reduced. In another embodiment, the phosphor layer 63 can also be disposed on the upper surface of the substrate 610, but the substrate 61〇 A base film is also applied to the lower surface of the crucible. By providing the phosphor layer 630 on the substrate 61〇, the backlight module does not need to use a cold cathode fluorescent tube, and only uses a common ultraviolet light source, and the manufacturing process is simple and the cost is low. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a preferred embodiment of a backlight module of the present invention. [Main component symbol description] Light source 100 Light source reflector 200 Reflecting sheet 300 Reflecting layer 220 '320 Light guiding plate 400 Substrate 210, 310, 41 〇 Grid structure 420 Diffusion sheet 500 Diffusion layer 520 Upper glazing sheet 600 200937046 _· · Lower brightnessing sheet 700 substrate 510, 610, 710 protrusion structure 620 fluorescent layer 630 brightness enhancement layer 720 housing 800 ο 9