201013263 九、發明說明： 【發明所屬之技術領域】 本發明係為冑背光模組，尤指_種利用所具有的突 起構造來維持其中兩擴散板間之間距的背光模組。 【先前技術】 © 纟於平面顯示裝置具有輕薄、平面和數位等特點，因 此相較於傳統映像管之電視機或顯示器有著絕大的優勢， ^如何讓顯示裝置以至於是所述之背光模組能朝向更輕 4、薄型，甚至是高亮度或低耗能#目標來發展，已為此 技術產業之重要議題。如第1圖⑻和(b)所示，係為習知 種直下式背光模組100之示意圖，其中第1圖(a)的AA， 段剖面便呈現為第1圖(b)之放大示意；該模組包含有一燈 箱10、一背板11、—反射板(Reflect〇r)l2、數個燈管組成 的光源13、和兩擴散板(Diffuser)14卜142。而其中光源13 之燈管的設置可採用冷陰極螢光管(CCFL)、熱陰極螢光管 或發光二極體(LED)等，而目前是以圓柱狀外形且具高輝 度之冷陰極燈管為製造主流；就直下式背光模組100而 言，反射板12是設置於燈箱10之背板11上，使得光源 13所產生的光線經反射板12的反射與集中之後，便會反 • 射至擴散板141、142上。 5 201013263 承上所述’該等擴散板HI、M2中所具有的微結構或 散射粒子能讓穿透之光線發生折射、反射或散射之光學擴 散現象，因而能將光線轉換為均勻且高亮度之面光源朝第 1圖(b)的右側射出，錢而能提供所述之液晶顯示面板上 的…、明。一般直下式背光模組就擴散板<設置來說可僅設 計一，擴散板即可’而由於直下式背光模組中的光源為多 個燈官所組成，因此在僅—個絲板料透光線作處理的 效果下，料造錢管與燈管财__暗不均勾之現 象；此外’在顯示裝置愈趨薄型化的要求下，背光模組之 體積便更加縮小樣缩了絲之燈f和擴散㈣的距離， ，而使得面総所產生的明暗不均勻現象便會更加明顯。 以第1 _之所示而設置兩個擴散板之背光模組係 能較有效地產生出難的面光職果；另外，在構造的設 置上’燈箱1G之内部係可設置有多個切柱來抵頂支撐起 位於下層的擴散板142。 ❹ 擴 虽隹模組中設置兩個擴散板時，如何使這兩福 ，板之間的間距能轉—定值是相當重要的，因為若爲 嗯散板之間距無法、轉固定時，則將會影響所產生的產 勻1就實際的情況來說，目前技術大多僅於坪 ^ ·且相10上將兩擴散板的兩端或邊緣加以封黏固定，隹 Π1之面板與背光模組所使用的擴散板也就相對逾 之形為塑膠材質，當面積愈大時便會有-定 Pi夕，、人將兩個擴散板作相對設置時，又會因兩相 二”、其他物體切而很容易因為重量而產生部份纪 201013263 =形====擴散板一 【發明内容】 本發明在於提供一種背光模組，使得利用所具有的突 構以此維她组中兩擴散板間之間距，進而能產生均勾 的面光源以解決習用技術之0細亮暗現象的問題。 本發明的其他目的和伽可峨本㈣所揭露的技術 特徵中得到進一步的了解。 為達上述之一或部份或全部目的或是其他目的，本發 明之-實施例係提出-種背光模組，包含有：一燈箱；至 少-光源’設置於該燈箱中；—第—擴散板，設置於該燈 f中，並餘該光源之上方；—第二雜板，設置於該燈 相中’並位於該第—擴散板與該光源之間；至少-第-突 起構造’穿設於該第二擴散板，並用以抵頂該第—擴散板 的:表面而支撐該第-擴散板，且該第—突起構造不位於 該光源的正上方；以及至少—第—支撐柱，設置於該燈箱 中，並位於該絲之—側，肋抵帛二擴散板的下表 面而支撐該第二擴散板。 為讓本發明之上述特徵和優點能更明顯易懂 ’下文特 舉較佳實麵’並配合所附㈣，作詳細說明如下。 【實施方式】 201013263 下列各實施例的說明是參考附加的圖式，用以例示本 J ' .冶 J 使用的方向用語是 ,1用以實施之特定實施例。本發明所提到的方向用 语’例如「上」、「下」、「前」、「後」、「左」、「右 等，僅是參考附加圖式的方向。因此 用來說明，而非用來限制本發明。201013263 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a backlight module, and more particularly to a backlight module that utilizes a protruding structure to maintain a distance between two diffusion plates. [Prior Art] © The flat display device has the characteristics of lightness, flatness and digital position, so it has great advantages compared with the conventional video tube TV or display. How to make the display device so that the backlight module It is an important issue for the technology industry to be able to move towards a lighter 4, thinner, or even high-brightness or low-energy-consumption # target. As shown in Fig. 1 (8) and (b), it is a schematic diagram of a conventional direct type backlight module 100, wherein the section AA of Fig. 1(a) is an enlarged view of Fig. 1(b). The module comprises a light box 10, a back plate 11, a reflector, a light source 13 composed of a plurality of lamps, and two diffusers 14142. The lamp tube of the light source 13 can be arranged by using a cold cathode fluorescent tube (CCFL), a hot cathode fluorescent tube or a light emitting diode (LED), and the like is a cold cathode lamp with a cylindrical shape and high brightness. In the case of the direct-lit backlight module 100, the reflector 12 is disposed on the back panel 11 of the light box 10, so that the light generated by the light source 13 is reflected and concentrated by the reflector 12, and then reverses. The light is incident on the diffusion plates 141, 142. 5 201013263 According to the above description, the microstructures or scattering particles in the diffusing plates HI and M2 can refract, reflect or scatter the optical diffusion phenomenon of the transmitted light, thereby converting the light into uniform and high brightness. The surface light source is emitted toward the right side of FIG. 1(b), and the money can provide the above-mentioned liquid crystal display panel. Generally, the direct-lit backlight module can be designed only for the diffusion plate. The diffusion plate can be used only. Since the light source in the direct-lit backlight module is composed of a plurality of light officials, only one wire material is used. Under the effect of the light-transmitting line, the material of the money-making tube and the lamp tube __ dark unevenness hook phenomenon; in addition, under the requirement that the display device becomes thinner, the volume of the backlight module is further reduced. The distance between the filament lamp f and the diffusion (4) makes the unevenness of the brightness caused by the facial enamel more obvious. The backlight module with two diffusing plates as shown in the first _ can effectively produce a difficult surface light effect; in addition, in the configuration of the structure, the interior of the light box 1G can be provided with multiple cuts. The column is supported to support the diffuser plate 142 located in the lower layer. ❹ Although it is important to set the two diffusers in the module, how to make the distance between the two plates can be changed, because It will affect the production of the uniformity 1 in the actual situation, the current technology is mostly only on the Ping ^ · and the phase 10 on both ends or edges of the two diffusion plates are fixed, 隹Π 1 panel and backlight module The diffuser plate used is relatively shaped like a plastic material. When the area is larger, there will be a set of Pi Xi, when the two diffuser plates are set relative to each other, the two phases and two other objects will be It is easy to produce a partial segment due to weight. 201013263 = shape ==== diffuser plate. [Invention] The present invention provides a backlight module that utilizes the protrusion structure to maintain two diffusion plates in her group. The distance between the two, in turn, can produce a uniform surface light source to solve the problem of the fine light and dark phenomenon of the prior art. The other objects of the present invention and the technical features disclosed in the gamma (4) are further understood. One or part or all of the purpose or For other purposes, the embodiment of the present invention provides a backlight module including: a light box; at least a light source ' disposed in the light box; a first diffusion plate disposed in the light f and remaining in the light source Above the second tray, disposed in the lamp phase and located between the first diffusion plate and the light source; at least the first protrusion structure is disposed on the second diffusion plate and used to abut the top The first diffusion plate of the first diffusion plate supports the first diffusion plate, and the first protrusion structure is not located directly above the light source; and at least the first support column is disposed in the light box and located at the side of the wire The ribs are supported by the lower surface of the two diffusing plates to support the second diffusing plate. The above features and advantages of the present invention can be more clearly understood, and the following is a better embodiment of the present invention. [Embodiment] 201013263 The following description of each embodiment refers to an additional drawing for exemplifying the specific terminology used by the present invention for the implementation of the present invention. Directional terms 'eg "up", "down" , "Before", "After", "Left", "Right", etc., are only used to refer to the orientation of the additional drawings. Therefore, it is intended to illustrate, not to limit the invention.
由先則技術所述可知’在—般具有兩個擴散板的直下 f背光模組中，設計這兩個擴散板之間_距維持在一固 疋值，方能使賴產生㈣狀面光源能呈現㈣勻化和 避免造成_亮暗現㈣更進—步來說，在具有兩 個擴散板的直下式背光触之結構設計巾，如何在維持兩 擴，板之間關距之主要條件下而提出一有效的兩擴散板 固疋方式，亦為目前極欲解決之問題。 請參閱第2圖(a) ’係為本發明於一第一實施例中所提 出的一背光模組200之平面示意圖；同樣的，此背光模組 200為直下式之結構，如本圖所示，背光模組2〇〇包含有 一燈箱20、一反射扳22、至少一光源23,和兩擴散板24卜 242。於本實施例中，至少一光源23是以複數光源23為例， 其目的是為了增加照明光強度，且光源係可採用冷陰極射 線燈管。其中擴散板241設置於燈箱2〇中並相對位於擴散 板242和光源23的上方，而擴散板242則設置於燈箱20 t並位於擴散板241與光源23之間；而在燈箱20中相對 位於下方的反射板22能將光源23所產生的光線作反射與 集中之後’反射至兩擴散板241、242上以提供照明。 201013263 在此例中，於燈箱20中相對的下方空間上設置了有數 量為多個的支撐柱’如圖所示為支撐柱251、252，這些支 ' 撐柱係分散在燈箱20中並位於該些光源之一侧，也就是於 - 所構成的各個燈管之間完成設置，這些支撐柱並同時具有 相同之南度’而能用以抵頂相對位於下層之擴散板M2的 下表面，而能支撐起擴散板242。第2圖(a)的支撐柱251、 252係僅以接觸方式抵頂支撐擴散板242而並無穿過該擴 散板242。 Ο 然而在對擴散板241的支稽上’在此例中則是對擴散 板242設計了數量為多個的突起構造，如圖所示為突起構 造26、27，而這些突起構造係分散在燈箱20中並位於兩 擴散板241、242之間。詳細來說在此例中，該等突起構造 - 26、是於製成過程中穿設於其擴散板242上，也就是在 擴散板242上設計出數量為多個的孔座，並將該些突起構 造26、27之主體分別組裝、穿設於對應之孔座中，從而利 用各突起構造之端頂來抵頂相對位於上層之擴散板241的 Ο 下表面’而能支撐起擴散板241。同時在此例中，該些突 起構造26、27之設置位置係不位於該些光源23的正上方， 以避免影響光線之傳輸，並且在此例中，該些突起構造 26、27之設置位置係和該些支撐柱251、252分離。詳細 的構造係說明如後。 ' 請同時參閱第2圖(b)至(d)，其中第2圖(b)係為第2 ' 圖（a)中之之突起構造26的平面放大示意圖，而第2圖(c) 則為第2圖（a)中之之突起構造26的立體示意圖，而第2 201013263 圖(Φ則為第2According to the prior art, it can be seen that in the direct-f backlight module having two diffusing plates, the distance between the two diffusing plates is maintained at a fixed value, so that the (four) surface light source can be generated. It can show (4) homogenization and avoid the cause of _ bright and dark (4) more advanced - step, in the design of the straight-type backlight touch structure with two diffusers, how to maintain the two expansion, the main conditions of the distance between the plates Next, an effective two-diffusion plate solidification method is proposed, which is also a problem that is currently being solved. 2 (a) is a schematic plan view of a backlight module 200 according to a first embodiment of the present invention; similarly, the backlight module 200 is a direct-type structure, as shown in the figure. The backlight module 2 includes a light box 20, a reflective panel 22, at least one light source 23, and two diffusion plates 24b. In the present embodiment, at least one light source 23 is exemplified by a plurality of light sources 23, the purpose of which is to increase the intensity of the illumination light, and the light source can be a cold cathode ray tube. The diffuser plate 241 is disposed in the light box 2 并 and is located above the diffuser plate 242 and the light source 23, and the diffuser plate 242 is disposed between the diffuser plate 241 and the light source 23; and is relatively located in the light box 20 The lower reflector 22 is capable of reflecting and concentrating the light generated by the source 23 and then 'reflecting onto the two diffusers 241, 242 to provide illumination. 201013263 In this example, a plurality of support columns are disposed in the opposite lower space of the light box 20 as shown in the figure as support columns 251, 252, which are dispersed in the light box 20 and located One side of the light sources, that is, between the respective lamps formed by the -, the support columns have the same south degree and can be used to abut the lower surface of the diffusion plate M2 located opposite to the lower layer, The diffusion plate 242 can be supported. The support columns 251, 252 of Fig. 2(a) support the diffuser plate 242 only in a contact manner and do not pass through the diffusion plate 242. Ο However, in the case of the diffusion plate 241, in this example, a plurality of protrusion structures are designed for the diffusion plate 242, as shown in the figure, the protrusion structures 26, 27, and the protrusion structures are dispersed in The light box 20 is located between the two diffusion plates 241, 242. In detail, in this example, the protrusion structures 26 are disposed on the diffusion plate 242 during the manufacturing process, that is, a plurality of holes are designed on the diffusion plate 242, and the The main bodies of the protruding structures 26 and 27 are respectively assembled and inserted into the corresponding hole holders, so that the end plates of the respective protruding structures are used to abut against the lower surface of the diffusing plate 241 located on the upper layer to support the diffusing plate 241. . Also in this case, the positions of the protrusion structures 26, 27 are not located directly above the light sources 23 to avoid affecting the transmission of light, and in this case, the positions of the protrusion structures 26, 27 are set. It is separated from the support columns 251, 252. The detailed structure is described as follows. 'Please refer to Fig. 2 (b) to (d) at the same time, wherein Fig. 2(b) is a plan enlarged view of the protrusion structure 26 in Fig. 2(a), and Fig. 2(c) Is a perspective view of the protrusion structure 26 in Fig. 2(a), and the second 201013263 figure (Φ is the second
力甘爾敖板242上設計有一孔座260， 26的外觀形狀係為一圓柱狀平頭之設 突起構造26包含有一主體261和設置於該 而所述之突起構造26 計，詳細來說，突起氆. 261之—端上的—突起部262，同時突起部262所呈 現之錐狀平顧計倾其τ方的底面姆纽孔座之 孔控，且在此例中，圓柱狀的主體261之粗細大小和孔座 260之孔輕相吻合，因此當將主體261組裝於孔座中 之後便ι藉由錢起部262相對地抵擋靠附於該擴散板 242的上表面而能完成組裝。 疋故組裝元成之結果便如第2圖(d)所示，而再將擴 散板241置放於其上的結果便如第2圖⑼所示；而當將所 ^的突起構造26、27分別於各孔座施上完成組裝、穿設 h'由於我們將各突起構造％、27中的突起部262部份皆 设計成具有相同的突起高度，因此，對於上方的擴散板241 之抵頂與支撐上，便能有效地維持兩擴散板241、242間的 固定間距。 同時，請再參閱第2圖(a)中所示，對於該等突起構造 26、27(即此圖中所有的突起構造)的位置設計或是其中該 等孔座260之位置，係採用和下方各支撐柱251、252(即 此圖中所有的支撐柱)彼此分離之設計，或其彼此上下的位 置關係不互相對應’也就是避免各支撐柱251、252對應到 各突起構造26、27。此一結構設計能避免各燈管於運作時 對下層之擴散板242所造成的熱膨脹情形會影響其間距， 201013263 即避免同時支撐兩擴散板24卜242的一個支撐柱251、252 會因下層擴散板242水平上的熱膨脹而連動影響到上層擴 ' 散板241 ;也就是說，將下方的支撐柱251、252和中間的 - 突起構造26、27之上下位置採彼此相互分離而不連接的設 計方式，突起構造26、27便不會因為支撐柱25卜252的 變化而受到影響’從而能有效維持上下兩擴散板241、242 間的間距。 此貫施中所使用的突起構造中之突起部262係採用可 © 反射光線或對光線有良好反射效果之材質所製成，以確保 照明光線在傳遞至兩擴散板241、242間時能產生有效的反 射效果，以達到將高亮度的光線照射進入上方之擴散板 241中以進行均勻化的光學處理。此外，由於無論擴散板 ' 24卜242或突起構造26、27在厚度或長度上皆為1至2 厘米的大小而已’因此在此例之圖式中，我們將主體261 之長度設計為略大於該擴散板242之厚度，以續保其組裝 效果不致脫落；或者我們可直接將主體261以膠黏方式组 ® I㈣應的孔座㈣之中以完成岐；又或者我們可將主 體261以部分干涉方式組裝於孔座，以加強組裝固定 的效果。 當然，我們也可以對所述之突起構造的組裝方式加以 變化，或者改變所述之主體的結構細其财式完成组 裝。請同時參閱第3陶和⑼’其中第3圖⑷係為本發明 於一第二實施例中所提出的一突起構造28的立體示意 圖’而第3圖(b)則為第3圖⑻中之之突起構造28的平面 11 201013263 構成剖示圖；此第二實施例係和上述之第—實施例有相同 的應用環境，也就是在擴散板242上設計有一孔座28〇 , 而可將突起構造28應用至第一實施例之背光模組2〇〇令， ' 差別僅在於兩實施例中的突起構造或其中之主體在外型和 構造設計上的不同。 在此例中，我們將突起構造28之主體281設計成具有 可撓性，如第3圖(a)所示，即主體281為空心而外表為多 個可撓彈片之結構。而突起構造28除同時包含有類似特徵 〇 的一突起部282外，還包含有設置於主體281之另一端上 的止擋部284，洋細來說如圖所示，係在每一可撓彈片 上都設計有一個端點向外傾斜的止擋卡合構造，使得突起 構造28在完成穿設與組裝至孔座280之過程中，便能藉由 _ 主體281與止擋部284進入孔座280時所產生的對應形變 而組裝於其中’並藉由止擋部284穿過孔座280後，止擋 部284將恢復原本所產生的對應形變，而能完成如第3圖 (b)所示之組裝結果。 〇 本發明上述兩實施例之概念，便是在下層.擴散板之下 方支撐柱所抵頂支撐的對應位置外，來設置對上層擴散板 進行抵頂支撐的各突起構造，並且這些突起構造在維持其 兩板間距的前提下，是可對其進行各種構造的變化設計； 而上述第二實施例之說明便為其中一種可能的變化。更進 一步來說於另一實施例中，可於製成過程中直接在一下層 擴散板的上表面之所需要產生支撐的位置上，製作出多個 具有相同突起高度的突起物，或所述之突起構造的突起 12 201013263 部’也就是該下層擴散板和此一突起物或突起構造係採用 一體成型方式直接於同一製成中完成，而不需另行鑽孔以 ' 產生所需之孔座以及進行對應的組裝。 ' 當然’本發明實施例之突起構造亦可作和相對下方的 支撐柱是互相連接的或有上下位置的對應關係，或為部分 的突起構造與支撐柱作相連接等之變化設計，例如在第4 圖中’係為本發明於一第三實施例中所提出的一背光模組 300之平面示意圖，如圖所示，在以燈管所構成的光源33 〇 fa1設置了有多個支撐柱35。該些支撐柱35之-除能直接 抵頂支撐模組中下層的一擴散板342外，還可在對應的位 置上設計直接將支撐柱35作部份延長以形成一突起構造 並牙過擴散板342,而能直接抵頂支撐到模組中上層的一 ' 擴散板34ι以同時完成對上下兩擴散板之支撐。 綵上所述’根據上述各實施例’利用本發明實施例之 突起構造的設計概念以及所採用的組裝固定方式，能有效 地在具有兩個擴散板的直下式背光模組中，將此兩個擴散 ❹板之間的間距維持固定。而本發明實施例除了具有製成設 私易和組裝方式簡單方便等特徵外，還能有效避免因為 熱膨脹之因素而連動影響到上下兩擴散板之結構或間距的 問題；是故，藉由本發明實施例之概念便能有效地解決習 用背光模組之明顯亮暗現象的問題，從而能成功地達到本 ' 案發展目的之均勻化效果更佳的面光源應用。 - 上列實施例的說明是參考附加的圖式，用以例示本發 月可用以實把之特疋實施例。雖然本發明已以較佳實施例 13 201013263 揭露如上’然其並非用以限定本發明 & 中具有通當知钟土各、 任何所屬技術領域 識者，在不脫離本發明之精神 可些許之更動與明 ^ 田 所附之申， f ^^之保翻圍當視如後 利範圍不須達成本發明所揭露之全部目的 文件搜尋之用此外，摘要部分和標難是用來辅助專利 寸之用，並非用來限制本發明之權利範圍。 眚油^ ]朗所界定者鱗。科，本發明的任- ❹ 圖式簡單說明】 本案得藉由下列圖式及說明，俾得一更深入之了解·· ' 第1圖(a)和(b)，係為習知一種直下式背光模組1 〇〇之示意 . 圖。 第2圖(a) ’係為本發明一實施例之背光模組2〇〇之平面 意圖。 〃 第2圖(b)，係為第2圖(3)中之突起構造26的平面放大示 ❹ 意圖。 '、 第2圖(c)’係為第2圖(a)中之突起構造26的立體示意圖。 第2圖(d)，係為第2圖(a)中之突起構造26的平面構成剖 示圖。 第3圖(a)，係為本發明另一實施例之突起構造28的立體 • 示意圖。 第3圖(b) ’係為第3圖(a)中之突起構造28的平面構成剖 示圖。 201013263 係為本發明另一實施例之背光模組300之平面示 【主要元件符號說明】 本案圖式中所包含之各元件列示如下： 直下式背光模組100 燈箱10、20 背板ηThe Ligan's slab 242 is designed with a hole 260, and the outer shape of the 260 is a cylindrical flat head. The protrusion structure 26 includes a main body 261 and a protrusion structure 26 disposed thereon. 261. 261 - the end of the protrusion 262, while the protrusion 262 presents a cone-like flattening of the bottom surface of the τ square hole, and in this case, the cylindrical body 261 The size of the hole is lightly matched with the hole of the socket 260, so that the assembly can be completed by the money rising portion 262 relatively resisting the upper surface attached to the diffusion plate 242 after the main body 261 is assembled in the socket. The result of assembling the assembly is as shown in Fig. 2(d), and the result of placing the diffusion plate 241 thereon is as shown in Fig. 2 (9); 27 is assembled and placed in each of the holes, respectively. Since we have designed the protrusions 262 in each of the protrusion structures %, 27 to have the same protrusion height, therefore, for the upper diffusion plate 241 The top distance and the support can effectively maintain the fixed spacing between the two diffusion plates 241, 242. At the same time, please refer to the position design of the protrusion structures 26, 27 (i.e., all the protrusion structures in this figure) or the position of the hole holders 260, as shown in Fig. 2(a). The lower support columns 251, 252 (i.e., all of the support columns in this figure) are separated from each other, or their positional relationship with each other does not correspond to each other', that is, the respective support columns 251, 252 are prevented from corresponding to the respective protrusion structures 26, 27. . The structural design can prevent the thermal expansion of the lower diffusion plate 242 from affecting the spacing of the lamps during operation, and 201013263 avoids the diffusion of one support column 251, 252 of the two diffusion plates 24 242 at the same time. The thermal expansion of the plate 242 at the level affects the upper layer of the diffuser 241; that is, the design of the lower support posts 251, 252 and the intermediate-projection structures 26, 27 are separated from each other without being connected. In this manner, the protruding structures 26, 27 are not affected by the change of the support columns 25, 252, so that the spacing between the upper and lower diffusing plates 241, 242 can be effectively maintained. The protrusion 262 in the protrusion structure used in this embodiment is made of a material that can reflect light or have a good reflection effect on light to ensure that illumination light is generated when transmitted between the two diffusion plates 241, 242. An effective reflection effect is achieved to achieve high-intensity light irradiation into the upper diffusion plate 241 for homogenization. In addition, since the diffuser plate 24 or the protrusion structures 26, 27 are both 1 to 2 cm in thickness or length, so in the example of this example, we design the length of the body 261 to be slightly larger than The thickness of the diffuser plate 242 is continued to prevent the assembly effect from falling off; or we can directly assemble the main body 261 into the hole (4) of the I (4) to complete the crucible; or we can use the main body 261 as part The interference mode is assembled to the hole seat to enhance the effect of assembly and fixing. Of course, we can also change the assembly method of the protruding structure, or change the structure of the main body to complete the assembly. Please refer to the third ceramic and (9)', wherein the third figure (4) is a perspective view of a protruding structure 28 proposed in a second embodiment of the present invention, and the third figure (b) is the third figure (8). The plane 11 201013263 of the protrusion structure 28 is configured as a cross-sectional view; this second embodiment has the same application environment as the above-described first embodiment, that is, a hole holder 28 is designed on the diffusion plate 242, and The protrusion structure 28 is applied to the backlight module 2 of the first embodiment, 'the only difference is the protrusion structure in the two embodiments or the difference in the shape and configuration of the body therein. In this example, we design the body 281 of the raised structure 28 to have flexibility, as shown in Fig. 3(a), that is, the body 281 is hollow and has a structure of a plurality of flexible shrapnel. The protrusion structure 28 includes a protrusion 284 disposed on the other end of the body 281 in addition to a protrusion 282 having a similar feature ,, and the outer portion is flexible as shown in the figure. The shrapnel is designed with a stop engagement structure with an end point that is outwardly inclined, so that the protrusion structure 28 can enter the hole by the main body 281 and the stop portion 284 during the process of completing and assembling to the hole holder 280. When the corresponding deformation generated by the seat 280 is assembled therein, and after the stopper portion 284 passes through the hole holder 280, the stopper portion 284 will restore the corresponding deformation which is originally generated, and can be completed as shown in FIG. 3(b). The assembly results shown. The concept of the above two embodiments of the present invention is to provide each of the protrusion structures for supporting the upper diffusion plate outside the corresponding position of the support of the support column below the lower diffusion plate, and the protrusions are constructed at On the premise of maintaining the distance between the two plates, it is possible to change the design of various structures; and the description of the second embodiment described above is one of the possible variations. Further, in another embodiment, a plurality of protrusions having the same protrusion height may be fabricated directly at a position where the support of the upper surface of the lower diffusion plate is required to be generated during the manufacturing process, or The protrusion 12 of the protrusion structure 201013263 portion, that is, the lower diffusion plate and the protrusion or protrusion structure are integrally formed in the same process, without separately drilling to generate the required hole seat And carry out the corresponding assembly. 'Of course' the protrusion structure of the embodiment of the present invention may also be designed to be connected to the lower support column or to have a corresponding relationship between the upper and lower positions, or to change the partial protrusion structure to the support column, for example, FIG. 4 is a schematic plan view of a backlight module 300 according to a third embodiment of the present invention. As shown in the figure, a plurality of supports are disposed on the light source 33 〇fa1 formed by the lamp tube. Column 35. The support columns 35 can be directly extended to the lower diffusion plate 342 of the support module, and can be directly extended at a corresponding position to form a protruding structure and a tooth spread. The plate 342 can directly support a 'diffusion plate 34ι of the upper layer in the module to simultaneously support the upper and lower diffusion plates. According to the above embodiments, the design concept of the protrusion structure of the embodiment of the present invention and the assembly fixing method adopted can effectively effectively use the two in the direct type backlight module having two diffusion plates. The spacing between the diffusion rafts remains fixed. In addition to the features of being simple and convenient to manufacture and easy to assemble, the embodiment of the present invention can effectively avoid the problem that the structure or the spacing of the upper and lower diffusing plates is affected by the thermal expansion factor; therefore, by the present invention The concept of the embodiment can effectively solve the problem of obvious bright and dark phenomenon of the conventional backlight module, and can successfully achieve the surface light source application with better uniformization effect for the development purpose of the present invention. - The description of the above embodiments is made with reference to the appended drawings, which are used to illustrate the embodiments of the present invention. Although the present invention has been disclosed in the preferred embodiment 13 201013263, it is not intended to limit the invention, and it is to be understood that the invention may be modified without departing from the spirit of the invention. In addition to the application attached to Ming ^ Tian, the coverage of f ^ ^ is considered to be in the scope of the application. The summary and the standard are used to assist the patent. It is not intended to limit the scope of the invention.眚 oil ^ ] Lang defined by the scales. Section, 任 ❹ 简单 简单 】 】 】 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本The backlight module 1 is a schematic diagram. Fig. 2(a) is a plan view of a backlight module 2 according to an embodiment of the present invention. 〃 Fig. 2(b) is a plan enlarged view of the protrusion structure 26 in Fig. 2(3). ', Fig. 2(c)' is a schematic perspective view of the protrusion structure 26 in Fig. 2(a). Fig. 2(d) is a plan view showing the configuration of the projection structure 26 in Fig. 2(a). Fig. 3(a) is a perspective view showing a projection structure 28 according to another embodiment of the present invention. Fig. 3(b) is a plan view showing the configuration of the projection structure 28 in Fig. 3(a). 201013263 is a plan view of a backlight module 300 according to another embodiment of the present invention. [Main component symbol description] The components included in the drawings are as follows: Direct type backlight module 100 Light box 10, 20 Back plate η
第4圖 意圖。 反射板12、22 光源13、23、33 擴散板 14卜 142、241、242、341、342 支撐柱251、252、35 背光模組200、300 突起構造26、27、28 孔座260、280 主體26卜281 突起部262、282 止擋部284 ❹ 15Figure 4 Intent. Reflector 12, 22 Light source 13, 23, 33 Diffuser 14 142, 241, 242, 341, 342 Support column 251, 252, 35 Backlight module 200, 300 Projection structure 26, 27, 28 Hole holder 260, 280 Main body 26 281 protrusions 262, 282 stoppers 284 ❹ 15