M302716 九、新型說明： 【新型所屬之技術領域】 本創作有關於光折射擴散元件及使用該擴散元件之背 光模組，尤其關於運用於平面顯示器之背光模級。 【先前技術】 第1圖#叾知之側燈式背光模組i ’係將包含燈管 反射罩12 A冷陰極管13之發光源設置於導光板u之側 邊，光線進入導光板U後經由印刷之反射網點丨^，將光 線均勻反射，且部分光線經由反射片15均勻反射，再經由 光學膜$ 14之擴散1光作肖，而形成一均句光源。此種 方式之背光模組由於光源設置於侧邊，組成顯示器需預留空 間，造成顯示器邊框過大，且預留空間有限，無^設置較多 之發光源，致輝度提升有限。 另一已知技術，如第2圖所示之直下式背光模組2,係 將包含冷陰極官22及燈管固定座總成24之發光源直接設 置於I光區域，並配合反射片23及擴散板21而形成均勻 光源’=中燈管固定座總成24將冷陰極f 22固定於背板 25 t，背巧25朝向冷陰極管22之表面則設置反射片23， 可提供大里光源以提升輝度；然由於直接設置於發光區 域’其前方需預留較大之空間，並以―透光率較低並具一強 度之聚合物薄板遮蓋，再放置多張擴散^件將光線擴散，以 避免發光不均勻情形。 攻種做法，輝度雖得以大幅提升，但為避免光線擴散不 ,M302716 - 均及顧及強廣兩、七 物薄拓， 而/，所使用的透光率較低並具一強声> 提供正a :、吧大部分光線遮蔽，導致需要更多發^合 八正吊使用之輝度，進產 先源才能 膜為單面單層，故=、=多;::使 月匕達到擴散光線的效果。 方式方 【新型内容】 • 本創作之一目的，在藉由透明之薄形化導先杯担 度，用以彡樘導光柘# 寻办化VtU反提供— 折射擴散元件之用猎/透明之薄形化導咖 • 升。 τ耵擴政疋件，使表面輝度得以提 ^ ^ 、吏用的片數，多層光折射擴散元 • ==r單層之光學擴散膜之擴散效率;此作 依本創作之一方面，—夕 包含：-基片，該基片具有層光折射擴散之光學元件， -第二表面;至少二擴散層面及與第-表面相對： 片的第-表面，至少-擴散/二中至7—擴散層設置於該基 擴散層包括至少-種以上不;^置於該基片的第二表面，各 學材料，且各擴散層之光學H役大小之擴散粒子及一光 依本創作之另—方面，折射係數為相異。 種背光模組，包含如前述之多 η ,M302716 擴散之光學元件，且包含—設置於該光學元件下方 光學m之方面，—種如前述之多層光折射擴散之 声♦面^ 強化之基片、於至少—擴散層之最外 或至少一擴散層為強化之擴散層。 化結=折= 【實施方式】 確被之目的、功㈣徵、和優點能更明 作詳上=將本創作以較佳之實例’並配合所附圖式， -請參照第3圖，本創作第一實 兀件3，其包含—透明基片3ι， 夕日光折射擴散 料，值不限於以下材料〜聚苯乙稀透土片31可為以下材 碳酸酉旨、聚乙歸、聚丙稀、聚氣承:基丙烯酸甲醋、聚 曱酸乙二s旨，較佳地，該基片31 2 &錢脂或聚對笨二 其表面產生-定之粗糖度，以、=可做粗度處理’使 31其上、下表面均句塗佈-擴i層Df/文果。透明基片 層33。上擴散層32及下擴散層3曰3壬”欠層32與下擴散 粒徑大小之擴散粒子及光學材料現广括至少-種以上不同 任意形狀的結構，且該擴散粒子的二，。該擴散粒子可為 佳為25〜40_，該擴散粒子之材料==徑為20〜80_，較 成樹脂、金屬、空氣及化合物中之〜k自可透光之有機之合 7 一者。該光學材料包括有 、M302716 透光之有機之合成樹脂，如熱塑性光學塑膠或uv硬化之光 固化式塑膠。其中上擴散層32其霧度(Haze)介於30〜6〇%; 而下擴散層33之霧度(Haze)則介於80%左右，該下擴散層 33其折射係數異於上擴散層32，其差異宜大於〇·2以上。9 請參照第4圖之第二實施例之多層光折射擴散元件4, 其與第3圖第一實施例之主要差異在於下擴散層（或上擴散 層，或下擴散層與上擴散層）為多層設計，具有第一層43、 φ «二層44及第三層45，其每一相鄰之擴散層其折射係數相 異’其差異宜大於0.2以上。 如第5圖所示，使用第一實施例與第二實施例之多層光 折射，散元件的直下式背光模組構造5,包含一背板55,其 表面汉置一反射片53，背板55之兩端則設置燈管固定座總 成54用以固定冷陰極管52 ;在其上方則放置透明導光板 51再=置多層光折射擴散元件3(或4)，即完成該構造5。 ‘光板51之材料可為聚苯乙烯、聚曱基丙烯酸曱酯、 φ 、聚乙烯、聚丙稀、聚氯乙稀、環氧樹脂、聚對苯 二—酯或壓克力。由於，光線在穿透透明導光板51， 作用發生在多層光折射擴散元件，整體光線穿透率 〇以上’相較原本使用擴散板光線穿透率僅30%〜40%， 除可牛低成本外，正面輝度亦比原始設計更佳。 此a甘…、弟圖，本創作第三實施例之多層光折射擴散元 ，明其3圖第—實施例之主要差異在於包含一強化之 透明基片6 1，与Γ故y丨 ^ 夕、悉日日I Θ強化之透明基片61可藉由增加第一實施例 之透明基片31：^/^^ , 7予度、在製造透明基片31時加入纖維或前 ινυυζ/ιο 合來形成’使得透明基片61 , 具有不易撓曲之特性。 Θ 61的硬度與強度增加， 苐7圖為本創作$ ^ 其與第3圖第—實例之Π之多層光折射擴散元件7, (或下擴散層73之下表面，：同上擴散層72之上表面 與下擴散層73之下表面)形成強化散層72之上表面 構可為蜂巢狀、複數條直線 =4，該強化層74之結 斜條狀等任一圖案形成，以提供，條％線、格子狀、χ形、 光折射擴散元件7。該強化層^ ^強度，可支樓該多層 I擴散層73之材料相同或可為例如H可與上擴散層72或 補強材料。 &、識维、破璃纖維等之 第8圖為本發明第五實施例之 其與第3圖第一實施例之主要差異在θ先軒射擴散元件8， 散層82(或下擴散層83被強化，或包含-強化之上擴 散層83被強化），上擴散層82才擴散層82與下擴 散層32中加入增強硬度的材料，如曰;弟一實施例之上擴 衍生物等材咖《，州 光折射擴散元件8的強度或硬度。 進而知加该夕層 剛述第6至8圖之第三至五實施例係 之 =Γ二化所形成之各種具強化結構之多層光折射擴 二二：可/尤弟4圖之第二實施例予以變化而形成各 折射擴散元件，其中上擴散層或/與 層設計’其每—相鄰之擴散層的折射係數相 異，且差異宜大於0.2以上。 9 M302716 此外，亦可就第6 S 8圖之第三至五實施例 變化，例如可組合第6及7圖之第三及四實施例，而^5 強化之透明基片61及強化層74之多層光折射擴散心成， 亦可配合第4圖之第二實施例進—步^以組合變化。 如第9圖所示’使用第三至五實施例及前述各 任一種多層光折射擴散元件的背光模組構造9，包含—北中 95，其表面設置—反射片93，背板％之兩端則設置心 定座總成94，“固定冷陰極f 92;在其上 二固 經強化後之多層光折㈣散元件6(或7、8)，如此則== 另广置透明導光板，即完成該構造9。依此規則，^ 獲致更佳的輝度、發光均勻度及薄型化的目的。 可 雖然本發明已彻上紅較佳之實麟細揭示，然复、， 發::凡熟習此一發明者，在不脫離本發明之 精神和耗_ ’可作為各種更動及修改，因此本發 範圍當視作後附之申請專利範圍所界定者為準。 ’、遠 【圖式簡單說明】 第1圖為習知側燈式背光模組側面示意圖。 第2圖為習知直下式背光模組立體示意圖。 面示Γ圖圖為本創作第—實施例之多層光折射擴散元件之剖 面示Γ圖圖為本創作第二實施例之多層光折射擴散元件之剖 第5圖為㈣本創作之含透料光板㈣光模組立 體 不 M302716 意圖。 第6圖為本創作第三實施例之多層光折射擴散元件之剖 面示意圖。 第7圖為本創作第四實施例之多層光折射擴散元件之剖 面示意圖。 第8圖為本創作第五實施例之多層光折射擴散元件之剖 面示意圖。 第9圖為使用本創作之不含透明導光板的背光模組立體 示意圖。 【主要元件符號說明】 1 側燈式背光模組 11 導光板 11a 反射網點 12 燈管反射罩 13 冷陰極管M302716 IX. New Description: [New Technology Field] This work is about light refraction and diffusion elements and backlight modules using the same, especially for backlight modules used in flat panel displays. [Prior Art] Fig. 1 shows a sidelight type backlight module i', which includes a light source of a lamp tube cover 12A, and a light source of the cold cathode tube 13 is disposed on the side of the light guide plate u. After the light enters the light guide plate U, the light enters the light guide plate U. The printed reflective dots 均匀^, the light is evenly reflected, and part of the light is uniformly reflected by the reflective sheet 15, and then diffused by the optical film $14 to form a uniform light source. In this type of backlight module, since the light source is disposed on the side, the display panel needs to reserve space, causing the display frame to be too large, and the reserved space is limited, and there is no need to set more illumination sources, and the brightness is limited. Another known technique, such as the direct type backlight module 2 shown in FIG. 2, is to directly set the illumination source including the cold cathode official 22 and the lamp holder assembly 24 to the I-light region, and cooperate with the reflection sheet 23 And the diffuser plate 21 forms a uniform light source'=the middle lamp tube mount assembly 24 fixes the cold cathode f 22 to the back plate 25 t, and the back surface 25 faces the surface of the cold cathode tube 22 to provide a reflection sheet 23, which can provide a large light source In order to increase the brightness; however, since it is directly disposed in the light-emitting area, a large space needs to be reserved in front of it, and the polymer thin plate having a low light transmittance and a strength is covered, and then a plurality of diffusion members are placed to diffuse the light. To avoid uneven illumination. However, although the brightness has been greatly improved, M302716 - both take into account the strong and wide two, seven objects and thin, and /, the light transmittance is low and has a strong sound. Positive a:, most of the light is obscured, which leads to the need to use more brightness. The film can be used as a single-sided single layer, so =, = more;:: make the moonlight reach the diffused light Effect. Method side [new content] • One of the purposes of this creation is to use the transparent thinning to guide the first cup to guide the light 柘# to find the VtU counter-providing—the refracting diffusion element for hunting/transparent The thinning guide coffee • Li.耵 耵 耵 , , , , , , , 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面 表面The eve comprises: - a substrate having a layer of light-refractive diffusing optical elements, - a second surface; at least two diffusion layers and opposite the first surface: a first surface of the sheet, at least - diffusion / two to seven - The diffusion layer is disposed on the base diffusion layer, including at least one or more types, and is disposed on the second surface of the substrate, and each of the materials, and the diffusion layer of the optical layer of each diffusion layer and a light-based creation In terms of aspect, the refractive index is different. The backlight module comprises a plurality of η, M302716 diffusing optical elements as described above, and comprises: an optical m disposed under the optical element, and a substrate reinforced by a plurality of light refraction diffusions as described above At least the outermost layer of the diffusion layer or at least one diffusion layer is a reinforced diffusion layer.结====================================================================================================== The first solid element 3 is created, which comprises a transparent substrate 3 ι, a solar refracting diffusing material, and the value is not limited to the following materials. The polystyrene permeable sheet 31 can be the following materials: polycarbonate, polyethylene, polypropylene , the gas bearing: base acrylic vinegar, poly phthalic acid ethane s purpose, preferably, the substrate 31 2 & phlegm or poly bismuth on the surface of the surface to produce a certain degree of sugar, to = can be rough Degree processing 'to make 31 upper and lower surface uniform sentence coating - expand i layer Df / text. Transparent substrate layer 33. The upper diffusion layer 32 and the lower diffusion layer 3 曰 3 壬 "the underlying layer 32 and the diffusion particles of the lower diffusion particle size and the optical material are now widely included in at least one type of structure having an arbitrary shape, and the diffusion particles are two. The diffusing particles may preferably be 25 to 40 mm, and the material of the diffusing particles == 20 to 80 mm, which is equivalent to the organic combination of ~k and light transmissive resin, metal, air and compound. The material includes M302716 transparent organic synthetic resin, such as thermoplastic optical plastic or uv hardened photocurable plastic, wherein the upper diffusion layer 32 has a haze of 30~6〇%; and the lower diffusion layer 33 The haze is about 80%, and the lower diffusion layer 33 has a refractive index different from that of the upper diffusion layer 32, and the difference is preferably greater than 〇·2 or more. 9 Please refer to the multilayer of the second embodiment of Fig. 4. The light-refractive diffusion element 4, which differs from the first embodiment of FIG. 3 in that the lower diffusion layer (or the upper diffusion layer, or the lower diffusion layer and the upper diffusion layer) is a multi-layer design having a first layer 43, φ «2 Layer 44 and third layer 45, each adjacent diffusion layer has a different refractive index Preferably, it is greater than 0.2. As shown in FIG. 5, the direct-type backlight module structure 5 of the multi-layer light refraction, the dispersive element of the first embodiment and the second embodiment is used, and includes a back plate 55 having a surface and a reflection. The film 53 and the two ends of the back plate 55 are provided with a lamp holder assembly 54 for fixing the cold cathode tube 52; above the transparent light guide plate 51, a plurality of light refraction and diffusion elements 3 (or 4) are disposed, that is, This construction is completed 5. The material of the light plate 51 may be polystyrene, polydecyl methacrylate, φ, polyethylene, polypropylene, polyvinyl chloride, epoxy resin, polyparaphenylene ester or acrylic. Because the light penetrates through the transparent light guide plate 51, the action occurs in the multilayer light-refractive diffusion element, and the overall light transmittance is higher than that of the original diffused plate. The light transmittance is only 30%~40%, except for the low cow. In addition to the cost, the positive luminance is also better than the original design. This is a multi-layer photorefractive diffusion element of the third embodiment of the present invention, and the main difference of the third embodiment is that it includes a transparent transparency. Substrate 6 1, and Γ 丨 丨 悉 悉 悉 悉 悉 悉 悉 悉 悉The sheet 61 can be formed by adding the transparent substrate 31 of the first embodiment: 7 to a degree, and adding a fiber or a front ινυυζ/ιο when manufacturing the transparent substrate 31, so that the transparent substrate 61 has The hardness and strength of the crucible 61 are increased, and the 苐7 image is the multi-layer photorefractive diffusion element 7 of the creation of the ^^ and the third embodiment, (or the lower surface of the lower diffusion layer 73, The surface of the upper surface of the diffusion layer 72 and the lower surface of the lower diffusion layer 73 may be honeycomb-shaped, a plurality of straight lines=4, and the curved layer of the reinforcing layer 74 may be any pattern. Formed to provide a strip % line, grid-like, dome-shaped, light-refracting diffusing element 7. The reinforcing layer may be of the same material as the multilayer I diffusion layer 73 or may be, for example, H and the upper diffusion layer 72 or a reinforcing material. 8 is a fifth difference between the fifth embodiment of the present invention and the first embodiment of the third embodiment. The main difference between the first embodiment and the first embodiment of the third embodiment is that the θ first ray diffusion element 8 and the diffusion layer 82 (or the lower diffusion) The layer 83 is reinforced, or the diffusion-enhancing layer 83 is reinforced. The upper diffusion layer 82 is provided with a material for enhancing hardness, such as lanthanum, in the diffusion layer 82 and the lower diffusion layer 32. The strength or hardness of the state light refraction diffusing element 8. Further, it is known that the layers of the third to fifth embodiments of the sixth to fifth embodiments are the two-layered light refraction expansion of the reinforced structure formed by the second embodiment: the second of the four figures The embodiment is modified to form each of the refractive diffusion elements, wherein the upper diffusion layer or/and the layer design 'the refractive index of each of the adjacent diffusion layers is different, and the difference is preferably greater than 0.2 or more. 9 M302716 In addition, the third to fifth embodiments of the sixth S 8 diagram may be changed, for example, the third and fourth embodiments of FIGS. 6 and 7 may be combined, and the transparent substrate 61 and the reinforcing layer 74 strengthened by ^5. The multi-layer light refraction diffusion core can also be combined with the second embodiment of FIG. 4 to change in combination. As shown in FIG. 9, the backlight module structure 9 using the third to fifth embodiments and each of the above-mentioned multilayer light-refractive diffusion elements includes - North Central 95, surface-reflecting sheet 93, and back panel % The end is provided with a cardiac seating assembly 94, "fixed cold cathode f 92; multi-layered light-folded (four) scattered elements 6 (or 7, 8) after the upper two solid reinforcement, such that == another transparent transparent light guide plate That is, the structure 9 is completed. According to this rule, ^ is better for brightness, uniformity of illumination, and thinning. Although the present invention has been completely improved by the best of the real, it is revealed that: The inventors of the present invention will be able to make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention is defined by the scope of the appended claims. Fig. 1 is a schematic side view of a conventional sidelight type backlight module. Fig. 2 is a perspective view of a conventional direct type backlight module. The front view is a multilayer light refraction diffusion element of the first embodiment. The cross-sectional view of the second embodiment of the present invention is a multi-layer photorefractive expansion Section 5 of the component is (4) The transmissive light plate of the present invention (4) The optical module is not intended to be a solid image. The sixth drawing is a schematic cross-sectional view of the multilayer light refraction diffusion element of the third embodiment. 4 is a schematic cross-sectional view of a multilayer light-refractive diffusion element according to a fifth embodiment of the present invention. FIG. 9 is a schematic view of a backlight module without a transparent light guide plate using the present invention. Stereoscopic diagram of the group. [Main component symbol description] 1 Sidelight type backlight module 11 Light guide plate 11a Reflective dot 12 Lamp reflector 13 Cold cathode tube
14 光學膜片 15 反射片 2 直下式背光模組 21 擴散板 22 冷陰極管 23 反射片 24 燈管固定座總成 25 背板 3 多層光折射擴散元件 M302716 31 透明基片 32 上擴散層 33 下擴散層 4 下擴散層具多層之多層光折射擴散元件 41 透明基片 42 上擴散層 43 下擴散第一層 44 下擴散第二層14 Optical film 15 Reflector 2 Direct-type backlight module 21 Diffuser plate 22 Cold cathode tube 23 Reflector 24 Lamp holder assembly 25 Back plate 3 Multi-layer photorefractive diffusion element M302716 31 Transparent substrate 32 Upper diffusion layer 33 Diffusion layer 4 lower diffusion layer multi-layered photorefractive diffusion element 41 transparent substrate 42 upper diffusion layer 43 lower diffusion first layer 44 lower diffusion second layer
45 下擴散第三層 5 直下式背光模組 51 導光板 52 冷陰極管 53 反射片 54 燈管固定座總成 55 背板 61 強化之透明基片 62 上擴散層 63 下擴散層 71 透明基片 72 上擴散層 73 下擴散層 74 強化層 81 透明基片 82 強化之上擴散層 83 下擴散層 9 直下式背光模組 M302716 92 冷陰極管 93 反射片 94 燈管固定座總成 背板 9545 lower diffusion third layer 5 direct type backlight module 51 light guide plate 52 cold cathode tube 53 reflection sheet 54 lamp holder assembly 55 back plate 61 reinforced transparent substrate 62 upper diffusion layer 63 lower diffusion layer 71 transparent substrate 72 Upper diffusion layer 73 Lower diffusion layer 74 Strengthening layer 81 Transparent substrate 82 Strengthening over diffusion layer 83 Lower diffusion layer 9 Direct type backlight module M302716 92 Cold cathode tube 93 Reflecting sheet 94 Lamp holder assembly back plate 95