M323061 八、新型說明： 【新型所屬之技術領域】 本創作係涉及背光模組改良，旨在提供一 晶顯示器中玎取代白光光源之背光模組改良。、 【先前技術】 按，一般應用在資訊裝置的液晶顯示器，係可以依照 '實際設計之需求’而選擇利用直下式或者是側光式的背光 •模組架構；前者直下式的發光光源是直接放置在液晶面板 的下方，其應用以較大尺寸的監視器與電視機領域為主。 後者侧光式的發光光源則疋放置在導光板的側邊，其光源 透過導光板可將光源均勻的分佈在背光模組中，目前侧光 式的背光源模組應用領域以攜帶式的小尺寸產品為主。 在直下式的背光源模組中，主要的發光光源包括發光 二極體（Light Emitting Diode ; LED)、冷陰極螢光燈 (Cold Cathode Fluorescence Lamp ; CCFL)、外部電極螢 肇光燈（External Electrode Fluorescence Lamp ; EEFL)、 及玻璃平面光源（Flat Fluorescence Lamp ; FFL )，其 中，第一圖所示為冷陰極螢光燈之結構剖視圖，冷陰極 螢光燈是在一玻璃管11壁内塗佈一層螢光粉12，並在坡續 管11内封入少量惰性氣體，如氖（Ne)、氫（Ar)及微量的 水銀13，當冷陰極燈管之電極丨4施加高電壓時，會有電 15由電極14射出，在水銀丨3原子放電時，會被因受 壓加速之電子15衝擊而發出紫外光16，經由紫外光16^免 玻璃管11壁上的紅、藍、綠三種螢光粉12而轉換為圩到 5 M323061 光17。 然上述之冷陰極螢光燈本身具有下列的缺點： 1、冷陰極螢光燈的發光原理是在兩電極端施以高電 壓使管内產生氣體放電形成電漿現象，此電漿現象會在燈 管接近電極的兩端自然形成暗區，造成螢光燈管的亮度的 不均勻。 • 2、在燈管產生氣體放電時，其電漿中的游離正電荷 - 將會撞擊電極使電極材料被濺鍍出來而附著於螢光粉上， > 因而造成每支螢光燈管之亮度與色度的不均勻。 3、CCFL長期使用後水銀汞原子會吸附在不同顏色的 螢光粉上造成每支螢光燈管之亮度與色度的不均勻；另一 方面在製造CCFL的過程必須使用抽真空排氣製程、螢光粉 塗佈製程、螢光粉乾燥與燒付製程、充填氣體及封口等製 程來製造，具有不易生產之缺點且成本相當的昂貴，故此 種製程在製造長尺寸的CCFL燈源會產生白色亮度與色溫變 化之問題，此現象是由於在塗佈螢光粉過程是使用虹吸原 > 理，但紅、藍、綠三種螢光粉的密度不相同，因而產生紅、 藍、綠三種螢光粉的塗佈不均勻現象發生使得每支螢光燈 管發光混成的白色亮度與色溫會隨燈管軸長的變長而越不 均勻。由上述理由可知在製造長形的CCFL光源具有亮度與 色溫不均現象發生，使得其生產良率低且因而成本提高； 而且螢光燈長久使用後，便會產生如汞原子附著於螢光粉 上，使得發光效率降低，光源的亮度因此被降低，且在兩 端的電極會產生焦黑及螢光粉剝落的現象，進而產生紫外 線外漏現象。 6 M323061 . 【新型内容】 顯示ίΓ二模組改良」’主要係提供-種應用於液晶 甲了取代白光光源之背光模組改良。 外嗜ί ^乍之背光模組至少設有複數紫外線光源，而各紫 中係設有複數光學膜片，其中；ί .源、激發成可見粒子可將紫外線光 -色背朵、、盾，一、使5亥月先杈組可應用於液晶顯示器的白 "、’猎以取代市面上之白光光源，可減少成本。 ► 【實施方式】 體運審，清楚本創作之結構組成，以及整 建作方式，丝配合圖式說明如下·· 或以外植改夂Y該背光模組至少設有—個 有複數ί士紫__之行進路徑中係設 子，夂^/工/、巾—光料#上並設置有複數螢光粒 口 =先粒子可將紫外線光源激發成可見光。 ^如f 目所τ ’係為本創作應用於直下η光模組< :二=，該背光模組2至少設有複數細^ ==線光源21可以為冷陰極燈管或發光二極體，而 二數光學膜片’各光學膜片係至少 7擴散板22、擴散片23、稜鏡片24、反射式偏光片 25或上述膜片之任意組合。 其中，該擴散板22上係設置有複數螢光粒子3]，往 翏閱第三圖所示’該擴散板22主要係設有—基： ’而基材221中係混合有擴散粒子奶以及螢光粒 W ’當紫外線光源21所發出之光線係、為紫外光Αι，但其 7 M323061 光線經由上方擴散板22中螢光粒子31之作用可將紫外線 光源激發成可見光A2，並由擴散粒子222之作用可將光線 均勻散出。 ‘ §然’各螢光粒子31係混合於載體3 2中，如第四圖 (A)所示’並附著於擴散板基材221 —侧，如圖所示係附著 於擴散板基材221上方；亦可如第四圖（B)所示，各螢光粒 - 子31可附著於擴散板基材221 —侧（可為上、下或左、右 . 侧）。 I 如第五圖所示，係為本創作應用於侧光式背光模組之 結構示意圖’該背光模組2至少設有一個或以上之紫外線 光源21 ’該紫外線光源21可以為冷陰極燈管或發光二極 體’而紫外線光源21 —側係設有複數光學膜片，各光學膜 片係至少包含有導光板26、擴散片23、稜鏡片24、反射 式偏光片25或上述膜片之任意組合，而紫外線光源21則 設置於導光板26之側邊處。 其中’該導光板26上係設置有複數螢光粒子31，該 > 導光板26主要係設有一基材261，而基材261中係混合有 螢光粒子31，當紫外線光源21所發出之光線係為紫外光 A1 ’但其光線經由侧邊之導光板26中螢光粒子31之作用 可將紫外線光源激發成可見光A2,並將光源朝由導光板26 上方均勻散出；當然，各螢光粒子亦混合於載體中，並附 著於導光板基材一側（可為上、下或左、右側）；或者各螢 光粒子可附著於導光板基材一側。 再者，設置有複數螢光粒子之光學膜片除了上述之導 光板或擴散板，亦可以為稜鏡片或擴散片；其中，該直下 式背光模組中擴散板22上方設有稜鏡片24(如第二圖所 8 M323061 不），或者側光式背光模組中導光板26上方設有稜鏡片 24(如第五圖所不），而該稜鏡片24之結構可如第六圖（A) 所示，該稜鏡片24主要係設有一基材241，·而基材241中 係混合有擴散粒子31，而基材241 -側並設有複數光學微 結構242 ’使紫外線光源可激發為可見光外，更可經由各 光學微結構242達到增光之效果；當然，各螢光粒子3ι 係混合於載體3 2中，如篦 > 阍α γ成— ， 如弟八圖⑻所不’並附著於稜鏡片 基材241 -側，如圖所示係附著於稜鏡片 材241 —侧（可為上、下或左、右侧）。 r 二：創：提供另一較佳可行之背光模組改 良没依法k壬新型專利之申請；惟， 圖式所示，係本創作較佳實施例之 兄明及 創作’是以，舉凡與本創作之構造、；置亚以此偈限本 相雷同者，蝴W的;^；=^或 【圖式簡單說明】 第一圖係為習用冷陰極螢光I之結構示魚圖。 第二圖係為本創作中直下式背光模:ς *三圖！，中紫外線光源通過擴; 思圖。 第四圖（Α)〜⑻係為本創作中擴散 第五圖係為本創作中側光式背光 二構-^圖。 /、圖（A)〜α)係為本創作稜鏡片之結構示意圖。 【元件代表符號說明】 9 M323061 紫外光A1 可見光A2 玻璃管11 螢光粉12 水銀13 電極14 電子15 • 背光模組2 紫外線光源21 擴散板2 2 基材221 擴散粒子222 擴散片23 棱鏡片24 基材241 光學微結構242 反射式偏光片25 導光板26 基材261 螢光粒子31 載體32M323061 VIII. New Description: [New Technology Field] This creation relates to the improvement of backlight module, which aims to provide a backlight module with a white light source instead of a white light source. [Previous technology] Press, generally applied to the liquid crystal display of the information device, can choose to use the direct-down or side-lit backlight/module structure according to the 'real design requirements'; the former direct-lit light source is direct Placed under the LCD panel, its application is dominated by larger monitors and TVs. The latter side light type illuminating light source is placed on the side of the light guide plate, and the light source is transmitted through the light guide plate to evenly distribute the light source in the backlight module. Currently, the side light type backlight module application field is portable. Size products are the main products. In the direct type backlight module, the main light source includes a Light Emitting Diode (LED), a Cold Cathode Fluorescence Lamp (CCFL), and an External Electrode (External Electrode). Fluorescence Lamp; EEFL), and Flat Fluorescence Lamp (FFL), wherein the first figure shows a structural cross-sectional view of a cold cathode fluorescent lamp, which is coated in the wall of a glass tube 11. a layer of phosphor powder 12, and a small amount of inert gas such as neon (Ne), hydrogen (Ar) and trace amount of mercury 13 are sealed in the slope tube 11. When the electrode 丨4 of the cold cathode lamp tube is applied with a high voltage, there will be The electricity 15 is emitted from the electrode 14 and is discharged by the electrons 15 accelerated by the pressure when the mercury atom 3 is discharged. The ultraviolet light 16 is emitted from the ultraviolet light 16 to avoid the red, blue and green colors on the wall of the glass tube 11. Light powder 12 is converted to 圩 to 5 M323061 light 17. However, the above-mentioned cold cathode fluorescent lamp itself has the following disadvantages: 1. The principle of the illumination of the cold cathode fluorescent lamp is that a high voltage is applied to the two electrodes to cause a gas discharge in the tube to form a plasma phenomenon, and the plasma phenomenon will be in the lamp. The two ends of the tube close to the electrode naturally form a dark area, resulting in uneven brightness of the fluorescent tube. • 2, when the lamp produces a gas discharge, the free positive charge in the plasma - will hit the electrode to cause the electrode material to be sputtered and attached to the phosphor, > thus resulting in each fluorescent tube Uneven brightness and chromaticity. 3. After long-term use of CCFL, mercury and mercury atoms will be adsorbed on different colors of phosphor powder, resulting in uneven brightness and chromaticity of each fluorescent tube. On the other hand, in the process of manufacturing CCFL, vacuum evacuation process must be used. , Fluorescent powder coating process, fluorescent powder drying and burning process, filling gas and sealing process, etc., which have the disadvantages of being difficult to produce and costly and expensive, so this process will produce long CCFL light source. The problem of white brightness and color temperature change, this phenomenon is due to the use of siphon original in the process of coating the phosphor powder, but the density of the red, blue and green phosphors is not the same, thus producing red, blue and green. The coating unevenness of the phosphor powder occurs, so that the white brightness and the color temperature of the light-emitting mixture of each fluorescent tube become uneven as the length of the tube axis becomes longer. It can be seen from the above reasons that the production of an elongated CCFL light source has a phenomenon of uneven brightness and color temperature, so that the production yield is low and the cost is increased. Moreover, after the fluorescent lamp is used for a long time, such as mercury atoms are attached to the fluorescent powder. In the above, the luminous efficiency is lowered, the brightness of the light source is reduced, and the electrodes at both ends are defocused and the fluorescent powder is peeled off, thereby generating an ultraviolet leakage phenomenon. 6 M323061 . [New content] The display of the "Modules of the two modules" is mainly used to improve the backlight module used in liquid crystals instead of white light sources. The externally-friendly backlight module has at least a plurality of ultraviolet light sources, and each purple medium is provided with a plurality of optical films, wherein; the source is excited to be visible particles, and the ultraviolet light-color back, shield, First, the 5 Haiyue first group can be applied to the white color of the liquid crystal display, and the hunting can replace the white light source on the market, which can reduce the cost. ► [Implementation] Physical examination, clear the structure of the creation, and the construction method, the silk with the diagram is as follows: · or the external planting 夂Y The backlight module has at least one In the path of __, the sub-set is set, and 复^/工/, towel-light material # is provided with a plurality of fluorescent particles. The first particles can excite the ultraviolet light source into visible light. ^如目目 τ ' is based on the application of the direct η light module < : two =, the backlight module 2 is provided with at least a plurality of fine ^ = = line source 21 can be a cold cathode lamp or a light-emitting diode The plurality of optical films 'each optical film are at least 7 diffusing plates 22, diffusing sheets 23, cymbals 24, reflective polarizers 25, or any combination of the above. Wherein, the diffusing plate 22 is provided with a plurality of fluorescent particles 3], and as shown in the third drawing, the diffusing plate 22 is mainly provided with a base: ' and the base material 221 is mixed with diffused particle milk and The fluorescent particles W' are emitted by the ultraviolet light source 21, which is ultraviolet light, but the 7 M323061 light is excited by the fluorescent particles 31 in the upper diffusing plate 22 to excite the ultraviolet light source into visible light A2 and diffuse particles. The effect of 222 is to evenly dissipate the light. The respective fluorescent particles 31 are mixed in the carrier 3 2 and adhered to the side of the diffusion plate substrate 221 as shown in the fourth diagram (A), and are attached to the diffusion plate substrate 221 as shown in the drawing. Above; as shown in the fourth figure (B), each of the phosphor particles 31 may be attached to the side of the diffuser substrate 221 (which may be upper, lower or left and right sides). I, as shown in the fifth figure, is a schematic diagram of the structure applied to the edge-lit backlight module. The backlight module 2 is provided with at least one or more ultraviolet light sources 21'. The ultraviolet light source 21 can be a cold cathode light tube. Or a light-emitting diode 'and a plurality of optical films are disposed on the side of the ultraviolet light source 21, and each of the optical films includes at least a light guide plate 26, a diffusion sheet 23, a cymbal sheet 24, a reflective polarizer 25, or the above-mentioned diaphragm. Arbitrarily combined, the ultraviolet light source 21 is disposed at the side of the light guide plate 26. The light guide plate 26 is provided with a plurality of fluorescent particles 31. The light guide plate 26 is mainly provided with a substrate 261, and the substrate 261 is mixed with fluorescent particles 31, which are emitted by the ultraviolet light source 21. The light is ultraviolet light A1 'but the light can be excited into the visible light A2 by the action of the fluorescent particles 31 in the light guide plate 26 on the side, and the light source is evenly dispersed above the light guide plate 26; of course, each firefly The light particles are also mixed in the carrier and attached to one side of the light guide substrate (which may be upper, lower or left and right sides); or each of the fluorescent particles may be attached to one side of the light guide substrate. In addition, the optical film provided with the plurality of fluorescent particles may be a cymbal or a diffusion sheet in addition to the above-mentioned light guide plate or diffusion plate; wherein the direct type backlight module is provided with a cymbal sheet 24 above the diffusion plate 22 ( As shown in Fig. 8 of the second figure, M323061 does not), or in the edge-lit backlight module, the baffle 24 is disposed above the light guide plate 26 (as shown in the fifth figure), and the structure of the bake piece 24 can be as shown in the sixth figure (A). As shown, the cymbal sheet 24 is mainly provided with a substrate 241, and the substrate 241 is mixed with the diffusion particles 31, and the substrate 241-side is provided with a plurality of optical microstructures 242' so that the ultraviolet light source can be excited In addition to visible light, the effect of light enhancement can be achieved via each optical microstructure 242; of course, each fluorescent particle 3ι is mixed in the carrier 3 2 , such as 篦 > 阍α γ into -, as in the case of the eighth figure (8) Attached to the side of the cymbal base material 241 - is attached to the side of the enamel sheet 241 as shown (upper, lower or left, right side). r 2: Chuang: Provide another better and feasible backlight module to improve the application of the new patent without the law; however, as shown in the figure, the brother and the author of the preferred embodiment of the present creation The structure of this creation,; the use of this is the same as the same, the butterfly W; ^; = ^ or [simple description of the diagram] The first picture is the structure of the cold cathode fluorescent I. The second picture is the direct type backlight module in this creation: ς *Three pictures! , the ultraviolet light source through the expansion; thinking. The fourth picture (Α)~(8) is the diffusion in the creation. The fifth picture is the side-light type backlight of the creation. /, Figure (A) ~ α) is a schematic diagram of the structure of the creation of the piece. [Description of component symbols] 9 M323061 Ultraviolet A1 Visible light A2 Glass tube 11 Fluorescent powder 12 Mercury 13 Electrode 14 Electron 15 • Backlight module 2 Ultraviolet light source 21 Diffusion plate 2 2 Substrate 221 Diffusion particles 222 Diffusion sheet 23 Prism sheet 24 Substrate 241 Optical microstructure 242 Reflective polarizer 25 Light guide plate 26 Substrate 261 Fluorescent particles 31 Carrier 32