丄J丄4 九 '發明說明： 【發明所屬之技術領域】 係關於一種背板、背光模組及液晶顯示裝置， 特別關於一B , 搜具有凸部以支撐光學膜之背板、背光模組及 液晶顯示裝置。 【先前技術】 日日員示袭置（Liquid Crystal Display, LCD )以其耗 電量低、發敎旦， & _ 热里少、重量輕、以及非輻射性等等優點，已 、丄破使用於各式各樣的電子產品中，並且逐漸地取代傳統 的陰極射键筝批- 、& 顯示裝置（Cathode Ray Tube Display, CRT Display) 〇 一般而言’液晶顯示裝置係包含一液晶顯示面板（LCD Panel)、以及〜背光模組（Backlight Module)。其中，液 曰曰顯tf面板係主要具有兩基板以及一夾設於兩基板間的 液晶層’而背光模組係可將來自一光源的光線均勻地分佈 到液晶顯示·面板'。 請參照圖1，其係為習知技術之背光模組示意圖，其 係為一直下式（Direct Type)之背光模組。背光模組1係 包含一背板11、複數燈管12、二燈管固定座（lamp holder) 13、複數燈管保護件（iainp rubber )14、一光學膜片組15、 一擴散板151及一框體16。 其中，燈管12係為冷陰極燈管（Cold Cathode Fluorescent Lamp, CCFL )，並間隔排列設置於背板11上， 5 1361314 燈管12之二端係穿設於燈管保護件14内，燈管保護件14 係用以保護燈管12電極的銲點，燈管固定座13係壓合燈 管保護件14於背板11上，且燈管固定座13係設置於背 板11之二側邊，並與背板11之二侧緣形成完整之側牆， 用以支撐擴散板151及光學膜片組15，再經由框體16與 背板11結合，俾使燈管12、擴散板151及光學膜片組15 被固定於背板11上。 另外，由於背板11及燈管固定座13僅支撐擴散板151 之邊緣，所以擴散板151的中間部份會因地心引力而下 垂，而影響燈管12所發出光線的路徑，進而降低背光模 組1之效能。所以，背光模組1更具有複數支撐件17，每 一支撐件Π上都具有一錐部171，這些支撐件17係設置 於背板11上，用以輔助支撐擴散板151。圖2係為背光模 組1之局部示意圖，由圖2可知，錐部171係抵接擴散板 151，如此一來，擴散板151就可受到合適的支撐力而發 揮良好的效果。在此，錐部Π1係用反光性良好的光學級 材質所製成，例如白色的聚碳酸醋（Polycarbonate, PC )， 以免背光模組1在圓錐部171附近產生暗點，但錐部171 成本較高。 雖然支撐件17的設置可解決支撐光學膜片組15的問 題，但也有許多的缺點。例如，各支撐件17都代表製造 成本及生產時間的增加，且隨著液晶顯示面板及背光模組 1尺寸的不同，背板11至光學膜片組15的高度Η亦不同 (請見圖2)，所以不同尺寸之背光模組1的支撐件17就 6 1361314 無法共用，並且需要重新設計新的支撐件17高度，故降 低了支撐件17的原料備料相容性，因此會增加製造成本， 特別是光學級材質的聚碳酸酯是屬於高成本的物料，大量 使用亦會增加製造成本。 因此，如何提供一種背板、背光模組及液晶顯示裝 置，不需使用額外的支撐件就可合適地支撐光學板片，以 減少製造成本並縮短生產時間，並提高背光模組之效能， 實為當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種不需使用 額外支撐件就可合適地支撐光學板片之背板、背光模組及 液晶顯示裝置。 緣是，為達上述目的，依本發明之一種背板包含一背 板本體及一凸部，背板本體係具有一孔洞，凸部係設置於 孔洞之周緣，且與背板本體形成一角度。 為達上述目的，依本發明之一種背光模組係包含一背 板及一光學板片，背板係具有一背板本體及一凸部，背板 本體係具有一孔洞，凸部係設置於孔洞之周緣，且與背板 本體形成一角度，凸部遠離孔洞之一端係抵接於光學板 片。 為達上述目的，依本發明之一種液晶顯示裝置係包含 一背光模組及一液晶顯示面板，其中，背光模組係具有一 背板及一光學板片，背板具有一背板本體及一凸部，背板 7 1361314 本體係具有一孔·;同，凸部係設置於孔洞之周緣，且與背板 本體形成—角度，凸部遠離孔洞之一端係抵接於光學板 月，另外，液晶#示面板係鄰設於背光模組。 承上所述，依本發明之一種背板、背光模組及液晶顯 •示裝置，因其背板上具有一凸部用以支樓光學板片’使得 光學板片發揮較往的光學特性’進而提高背光模組之效 能。另外，凸部與背板本體係為一體成型，所以與習知技 術相較，本發明不需要製造額外的支撐件來支撐光學板 片，進而減少製造成本及生產時間。此外’凸部'孔洞及 背板本體可以沖麈製程而成塑，與習知技術相較，本發明 可依據背板本體直光學板片的高度來進行沖壓，所以可提 高背板凸部的相容性，並進而增加背光模組及液晶顯示裝 .置之效能。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之一 種为板、背光模組及液晶顯示裝置，其中相同的元件將以 相同的參照符號加以說明。 - 請參照圖3所示，本發明較佳實施例之一種背板2係 包含一背板本體21及複數凸部22,背板本體21係具有複 數孔洞211，每一凸部22係對應設置於每一孔洞211之周 緣，且與背板本體21形成一角度。在本實施例中，背板2 之材質係為金屬，例如為鋁或鋁合金，以利於傳導熱能並 散熱，另外，背板2之表面亦可為錢鋅鋼片，以抗氧化。 8 1361314 需注意者，本實施例之背板本體21大致上係為平板狀， 但不限制為板狀，若背板本體21上具有凹凸圖案或其他 造成表面不平坦之結構，仍然屬於背板本體21之範圍。 在本實施例中，凸部22係與背板本體21 —體成型， 並且凸部22、孔洞211及背板本體21係以沖壓製程而成 型。請參照圖3之放大圖，經由沖壓製程向背板本體21 沖壓產生之凸部22與孔洞211之形狀係互相配合並各有 一邊互相連接，凸部22可沖壓成任意形狀，當然，凸部 22亦可再進行加工而形成各樣形狀，例如長條狀（圖3) 或鈎狀等等。請參照圖4A至圖4C所示，當凸部22為鈎 狀時，凸部22遠離孔洞211之一端係具有一轉折結構 221，轉折結構221可為L形、U形或门形，當然轉折結 構221可依需要而設計成為其他形狀。 另外，本實施例之背板2更可包含一套件23，係套設 於凸部22遠離孔洞211之一端。其中，套件23之材質可 為彈性材料，當有光學膜設置於背板2上，並由凸部22 支撐時，藉由套件23就可避免金屬材質的凸部22因外力 而直接磨擦或撞擊光學板片的表面而造成光學板片損 傷。為了避免凸部22遮住太多的光線，套件23可用光學 級之聚碳酸S旨（Polycarbonate, PC)製成，以協助光線的 反射。如此一來，背光模組才不會在凸部22與光學板片 接觸的地方產生暗點。又，雖然本實施例之套件23係使 用光學級之聚碳酸酯製成，但相較於習知，本實施例之套 件23可應用於任何尺寸之背光模組而不需重新設計，而 9 .1361314 提升原料零件的相容性、減少備料成本。更進一步，本實 施例之套件23尺寸可設計為足夠供套設於凸部22之一端 即可。如此更可減少光學級之聚碳酸酯的使用、減少物料 成本，綜上，本實施例之背板2可大幅縮減製造成本。在 本實施例中，套件23之形狀並無特別的限制，可為任何 形狀，較佳的是與凸部22之形狀相配合，以利牢固地套 設於凸部22。 接著，請參照圖5所示，以說明本發明較佳實施例之 一種背光模組3。 本實施例之背光模組3係包含一背板2、至少一燈管 31、二燈管固定座（lamp holder )32、複數燈管保護件（lamp rubber) 33、一光學板片34、一光學膜片組35及一框體 36 〇 其中，背板2已於前述實施例詳述，於此不再贅述。 在本實施例中，燈管31係以複數冷陰極燈管（Cold Cathode FluorescentLamp，CCFL)為例，並間隔排列設置於背板本 體21上，燈管31之二端係分別穿設於燈管保護件33内， 燈管保護件33係用以保護燈管31電極的銲點。另外，燈 管固定座32係壓合燈管保護件33於背板本體21上，且 燈管固定座32係設置於背板本體21之二側邊，並與背板 本體21之二側緣212形成完整之側牆，用以支撐光學板 片34。此外，光學膜片組35係設置於光學板片34之上， 一般而言，光學板片34可為一擴散板或其他具有光擴散 功能的光學板片，而光學膜片組35可以是選自於一上擴 10 1361314 散膜、一增亮膜及一下擴散膜所組成之群組至少其中之 一。此外，藉由框體36與背板2結合，俾使埤管31、光 學板片34及光學膜片組35固定於框體36及背板2之間。 如此，燈管31所發出之光線，係經過光學板片34及 光學膜片組35，並射出背光模組3。其中，藉由光學板片 (例如一擴散板或一擴散膜）34、光學膜片組35之組合，使 得燈管31發出的光線能均勻發散出去，並提升光線之光 學性質。另外，可在背板本體21上設置一反射片24 (請 見圖6)，使得燈管31發出之光線經由反射片24反射至光 學板片34，以提高背光模組3之光線利用率及亮度。 另外，需注意者，本實施例之背光模組3係提供燈管 固定座32、燈管保護件33來固定燈管31，並與背板2連 結，此僅為一種實施例而並非限制。尚有許多方式可用以 固定、保護燈管31並使燈管31固定在背板2上，由於此 部分並非本實施例之主要特徵且為習知技術，因此不再贅 述。 圖6係為背光模組3之一局部示意圖，如圖6所示， 凸部22遠離孔洞211之一端係抵接於光學板片34，俾使 光學板片34藉由凸部22的支撐而不下垂，進而獲得較佳 的光學特性。需注意者，凸部22之尺寸係依據背板本體 21至光學板片34之高度Η來決定，亦即隨著高度Η的不 同，凸部22可沖壓成不同尺寸，俾使凸部22抵接光學板 片34。另外，藉由套件23作為保護件，可避免凸部22碰 撞或磨損光學板片34，且套件23係可由光學級之聚碳酸 11 1361314 酯製成，可加強光線的反射，使背光模組3 而提升背光模組3之效能，並且，套件23可共祕使用 '於不同尺寸之背光模組’進而減少原物料備料成本。另 外，反射片24可在對應於凸部22之位置開設通孔241， -㈣反射片24可整片地直接裝設於背板本體^的表面 上’而提升背光模組3之組裝效率。 1後，.請參照® 7所示’以說明本發明較佳實施例之 一種液晶顯示裝置4。 # 如圖7所示，液晶顯示裝置4係包含-背光模組3及 -液晶顯示.面板41，其中，背光模組3已於前述實施例詳 述，於此不再贅述。 •另外，液晶顯示面板41係鄰設於背光模組3, 一般而 言，液晶顯示面板4H系包含一第一基板、一第二基板、 以及-夾設於第一基板及第二基板之間之液晶層，當然液 晶顯示面板41係更可具有周邊電路，以控制驅動液晶層 g 中液晶分子的旋轉。 本實施例中液日曰_示裝置4更可包含一外框42，外 框42係與背光模組3《背板2結合，以失置液晶顯示面 '板41於外櫂42及背光之間。由背光模組3所發出 •之光線，係進入液晶顯示面板41，而產生晝面。 綜上所述外依本發明<一種背板、背光模組及液晶顯 不裝置’因其月板上具有〜凸部用以支樓光學板片，使得 光學板片發揮較佳，光學特性，進而提高背光模組之效 能。另外u與月板本體係可為一體成型，所以與習知 12 1361314 技術相較，本發明不需要製造額外的支撐件來支撐光學板 片，進而減少製造成本及生產時間。此外，由於凸部、孔 洞及背板本體可以沖壓製程而成型，與習知技術相較，本 發明可依據背板本體至光學板片的高度來進行沖壓，所以 可提高背板凸部應用於各尺寸背光模組的共用相容性，並 進而減少背光模組及液晶顯示裝置之原物料備料。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為一種習知背光模組之一示意圖； 圖2為一種習知背光模組之一局部示意圖； 圖3為依據本發明較佳實施例之一種背板之一示意 圖； 圖4A至圖4C為依據本發明較佳實施例之一種背板之 凸部之不同態樣的示意圖； 圖5為依據本發明較佳實施例之一種背光模組之一示 意圖； 圖6為依據本發明較佳實施例之一種背光模組之一局 部不思圖，以及 圖7為依據本發明較佳實施例之一種液晶顯示裝置之 一示意圖。 13 1361314丄J丄4 九' invention description: [Technical field of invention] relates to a backboard, a backlight module and a liquid crystal display device, in particular, a B, a back plate with a convex portion for supporting an optical film, and a backlight module And a liquid crystal display device. [Prior Art] The Liquid Crystal Display (LCD) has been smashed by its low power consumption, low frequency, & _ less heat, light weight, and non-radiation. Used in a wide variety of electronic products, and gradually replaced the traditional cathode shot-on-board display device (Cathode Ray Tube Display, CRT Display) 〇 Generally, the liquid crystal display device includes a liquid crystal display. Panel (LCD Panel), and ~ Backlight Module (Backlight Module). The liquid crystal display tf panel mainly has two substrates and a liquid crystal layer interposed between the two substrates, and the backlight module can uniformly distribute the light from a light source to the liquid crystal display panel. Please refer to FIG. 1 , which is a schematic diagram of a backlight module of the prior art, which is a backlight module of a Direct Type. The backlight module 1 includes a back plate 11, a plurality of lamps 12, two lamp holders 13, a iainp rubber 14, an optical film group 15, a diffusion plate 151, and A frame 16. The lamp tube 12 is a Cold Cathode Fluorescent Lamp (CCFL), and is arranged on the back plate 11 at intervals. The two ends of the lamp tube 12 are worn in the lamp protection member 14 and the lamp The tube protector 14 is used to protect the solder joints of the electrodes of the bulb 12, the lamp holder 13 is used to press the lamp protection member 14 on the back plate 11, and the lamp holder 13 is disposed on the two sides of the back plate 11. And forming a complete side wall with the side edges of the back plate 11 for supporting the diffusion plate 151 and the optical film group 15 , and then combining with the back plate 11 via the frame 16 to make the lamp tube 12 and the diffusion plate 151 And the optical film group 15 is fixed to the back plate 11. In addition, since the back plate 11 and the lamp holder 13 only support the edge of the diffusion plate 151, the middle portion of the diffusion plate 151 may sag due to the gravity of the earth, thereby affecting the path of the light emitted by the tube 12, thereby reducing the backlight. The performance of module 1. Therefore, the backlight module 1 further has a plurality of supporting members 17, each of which has a tapered portion 171 which is disposed on the backing plate 11 for assisting in supporting the diffusing plate 151. Fig. 2 is a partial schematic view of the backlight module 1. As is apparent from Fig. 2, the tapered portion 171 abuts against the diffusion plate 151, so that the diffusion plate 151 can be subjected to a suitable supporting force to exert a good effect. Here, the tapered portion 系1 is made of an optical grade material having good light reflectivity, such as white polycarbonate (PC), so that the backlight module 1 does not cause dark spots near the conical portion 171, but the cost of the tapered portion 171 Higher. Although the arrangement of the support members 17 solves the problem of supporting the optical film group 15, there are also many disadvantages. For example, each support member 17 represents an increase in manufacturing cost and production time, and the heights of the back sheet 11 to the optical film group 15 are different depending on the size of the liquid crystal display panel and the backlight module 1 (see FIG. 2). Therefore, the support members 17 of the backlight modules 1 of different sizes cannot be shared by the 6 1361314, and the height of the new support members 17 needs to be redesigned, so that the raw material preparation compatibility of the support members 17 is reduced, thereby increasing the manufacturing cost. In particular, optical grade polycarbonates are high cost materials and will increase manufacturing costs in large quantities. Therefore, how to provide a backplane, a backlight module, and a liquid crystal display device can appropriately support the optical sheet without using an additional support member, thereby reducing manufacturing cost, shortening production time, and improving the performance of the backlight module. It is one of the current important topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a back sheet, a backlight module, and a liquid crystal display device which can appropriately support an optical sheet without using an additional support member. In order to achieve the above object, a backing plate according to the present invention comprises a backing plate body and a convex portion, the backing plate system has a hole, and the convex portion is disposed at a periphery of the hole and forms an angle with the backing plate body. . In order to achieve the above object, a backlight module according to the present invention comprises a back plate and an optical plate. The back plate has a back plate body and a convex portion. The back plate system has a hole, and the convex portion is disposed on the The periphery of the hole forms an angle with the body of the back plate, and the convex portion abuts against the optical plate piece away from one end of the hole. In order to achieve the above objective, a liquid crystal display device according to the present invention comprises a backlight module and a liquid crystal display panel, wherein the backlight module has a back plate and an optical plate, the back plate has a back plate body and a The convex portion, the back plate 7 1361314, the system has a hole; the same, the convex portion is disposed at the periphery of the hole, and forms an angle with the back plate body, and the convex portion abuts against the optical plate month away from one end of the hole, and The LCD panel is adjacent to the backlight module. According to the present invention, a backplane, a backlight module, and a liquid crystal display device according to the present invention have a convex portion on the back plate for supporting the optical plate sheet to make the optical sheet exhibit relatively optical characteristics. 'In turn, improve the performance of the backlight module. Further, since the convex portion and the back sheet system are integrally formed, the present invention does not require the manufacture of an additional support member to support the optical sheet as compared with the prior art, thereby reducing manufacturing cost and production time. In addition, the 'protrusion' hole and the back plate body can be formed by the punching process. Compared with the prior art, the present invention can be stamped according to the height of the straight optical plate of the back plate body, so that the convex portion of the back plate can be improved. Compatibility, and thus increase the performance of the backlight module and the liquid crystal display device. [Embodiment] Hereinafter, a board, a backlight module, and a liquid crystal display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein like elements will be described with the same reference numerals. As shown in FIG. 3, a backplane 2 of the preferred embodiment of the present invention includes a backplane body 21 and a plurality of convex portions 22, and the backplane body 21 has a plurality of holes 211, and each convex portion 22 is correspondingly disposed. At the periphery of each hole 211, and forming an angle with the back plate body 21. In this embodiment, the material of the back plate 2 is made of metal, such as aluminum or aluminum alloy, to facilitate conduction of heat energy and heat dissipation. In addition, the surface of the back plate 2 may also be a zinc-zinc steel sheet to resist oxidation. 8 1361314 It should be noted that the back plate body 21 of the present embodiment is substantially flat, but is not limited to a plate shape. If the back plate body 21 has a concave-convex pattern or other structure that causes the surface to be uneven, it still belongs to the back plate. The scope of the body 21. In the present embodiment, the convex portion 22 is integrally formed with the back plate body 21, and the convex portion 22, the hole 211, and the back plate body 21 are formed by a press process. Referring to the enlarged view of FIG. 3, the convex portion 22 and the hole 211 which are stamped by the stamping process are mutually matched in shape and each side is connected to each other, and the convex portion 22 can be punched into an arbitrary shape. Of course, the convex portion 22 is formed. It can also be processed to form various shapes, such as a long strip (Fig. 3) or a hook shape. 4A to 4C, when the convex portion 22 is hook-shaped, the convex portion 22 has a turning structure 221 at one end of the hole 211, and the turning structure 221 can be L-shaped, U-shaped or gate-shaped, of course, turning Structure 221 can be designed into other shapes as desired. In addition, the backboard 2 of the embodiment may further include a sleeve 23 sleeved on one end of the protrusion 22 away from the hole 211. The material of the kit 23 can be an elastic material. When the optical film is disposed on the back plate 2 and supported by the convex portion 22, the protrusion 23 of the metal material can be prevented from directly rubbing or striking due to an external force. The surface of the optical sheet causes damage to the optical sheet. In order to prevent the convex portion 22 from blocking too much light, the kit 23 can be made of an optical grade of Polycarbonate (PC) to assist in the reflection of light. In this way, the backlight module does not generate a dark spot where the convex portion 22 is in contact with the optical sheet. Moreover, although the kit 23 of the present embodiment is made of optical grade polycarbonate, the kit 23 of the present embodiment can be applied to a backlight module of any size without redesigning, and 9 .1361314 Improve the compatibility of raw material parts and reduce the cost of preparation. Furthermore, the kit 23 of the present embodiment can be sized to be sleeved at one end of the projection 22. In this way, the use of the optical grade polycarbonate can be reduced, and the material cost can be reduced. In summary, the back sheet 2 of the embodiment can greatly reduce the manufacturing cost. In the present embodiment, the shape of the kit 23 is not particularly limited, and may be any shape, preferably in cooperation with the shape of the convex portion 22, so as to be securely fitted to the convex portion 22. Next, please refer to FIG. 5 to illustrate a backlight module 3 according to a preferred embodiment of the present invention. The backlight module 3 of the embodiment includes a backboard 2, at least one lamp tube 31, two lamp holders 32, a plurality of lamp rubbers 33, an optical plate 34, and a lamp module. The optical film set 35 and a frame 36 are described in detail in the foregoing embodiments, and details are not described herein again. In this embodiment, the lamp tube 31 is exemplified by a plurality of cold cathode fluorescent lamps (CCFLs), and is arranged on the back plate body 21 at intervals. The two ends of the lamp tubes 31 are respectively disposed on the lamp tubes. In the protective member 33, the lamp protector 33 is used to protect the solder joints of the electrodes of the lamp tube 31. In addition, the lamp holder 32 is used to press the lamp protection member 33 on the back plate body 21, and the lamp holder 32 is disposed on the two sides of the back plate body 21 and the two sides of the back plate body 21. 212 forms a complete side wall for supporting the optical sheet 34. In addition, the optical film set 35 is disposed on the optical plate 34. Generally, the optical plate 34 can be a diffusing plate or other optical plate having a light diffusing function, and the optical film set 35 can be selected. At least one of the group consisting of a diffusing film, a brightness enhancing film, and a diffusing film is formed. Further, by combining the frame 36 and the backing plate 2, the manifold 31, the optical sheet 34, and the optical film group 35 are fixed between the frame 36 and the backing plate 2. Thus, the light emitted by the lamp tube 31 passes through the optical plate 34 and the optical film group 35, and is emitted from the backlight module 3. Wherein, by the combination of an optical plate (for example, a diffusing plate or a diffusing film) 34 and an optical film group 35, the light emitted from the lamp tube 31 can be uniformly radiated and the optical properties of the light can be improved. In addition, a reflective sheet 24 (see FIG. 6) may be disposed on the backplane body 21, so that the light emitted by the bulb 31 is reflected by the reflective sheet 24 to the optical sheet 34 to improve the light utilization efficiency of the backlight module 3. brightness. In addition, it should be noted that the backlight module 3 of the present embodiment provides the lamp holder 32 and the lamp protection member 33 to fix the lamp tube 31 and is coupled to the back plate 2, which is merely an embodiment and is not a limitation. There are many ways to fix and protect the lamp tube 31 and to secure the lamp tube 31 to the backing plate 2. Since this portion is not a main feature of the embodiment and is a prior art, it will not be described again. 6 is a partial schematic view of the backlight module 3. As shown in FIG. 6, the convex portion 22 abuts against the optical plate 34 at one end of the hole 211, so that the optical plate 34 is supported by the convex portion 22. It does not sag, and thus better optical properties are obtained. It should be noted that the size of the convex portion 22 is determined according to the height 背 of the back plate body 21 to the optical plate 34, that is, the convex portion 22 can be punched into different sizes according to the height Η, so that the convex portion 22 is pressed. The optical sheet 34 is connected. In addition, by using the kit 23 as a protective member, the convex portion 22 can be prevented from colliding or abrading the optical sheet 34, and the kit 23 can be made of optical grade polycarbonate 11 1361314 ester, which can enhance the reflection of light, so that the backlight module 3 The performance of the backlight module 3 is improved, and the kit 23 can be used together to reduce the cost of raw material preparation. In addition, the reflection sheet 24 can be provided with a through hole 241 at a position corresponding to the convex portion 22, and the (four) reflection sheet 24 can be directly mounted on the surface of the back plate body ^ to improve the assembly efficiency of the backlight module 3. 1A, please refer to the description of "7" for explaining a liquid crystal display device 4 of a preferred embodiment of the present invention. As shown in FIG. 7, the liquid crystal display device 4 includes a backlight module 3 and a liquid crystal display panel 41. The backlight module 3 has been described in detail in the foregoing embodiments, and details are not described herein again. In addition, the liquid crystal display panel 41 is disposed adjacent to the backlight module 3. Generally, the liquid crystal display panel 4H includes a first substrate, a second substrate, and a sandwich between the first substrate and the second substrate. The liquid crystal layer, of course, the liquid crystal display panel 41 may further have peripheral circuits for controlling the rotation of the liquid crystal molecules in the liquid crystal layer g. In this embodiment, the liquid display device 4 further includes an outer frame 42. The outer frame 42 is combined with the backlight module 3, the back plate 2, to dispose the liquid crystal display surface plate 41 on the outer cover 42 and the backlight. between. The light emitted by the backlight module 3 enters the liquid crystal display panel 41 to create a kneading surface. In summary, the present invention relates to a back sheet, a backlight module, and a liquid crystal display device. The optical sheet is preferably used for supporting the optical sheet due to the convex portion on the moon plate. , thereby improving the performance of the backlight module. In addition, the u and the moon plate system can be integrally formed, so that the present invention does not require the manufacture of additional support members to support the optical sheets, thereby reducing manufacturing costs and production time, as compared with the conventional 12 1361314 technique. In addition, since the convex portion, the hole and the back plate body can be formed by a stamping process, compared with the prior art, the present invention can press according to the height of the back plate body to the optical plate, so that the convex portion of the back plate can be improved. The shared compatibility of the backlight modules of various sizes, and further reduces the raw material preparation of the backlight module and the liquid crystal display device. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional backlight module; FIG. 2 is a partial schematic view of a conventional backlight module; FIG. 3 is a schematic view of a backplane according to a preferred embodiment of the present invention; 4A-4C are schematic views of different aspects of a convex portion of a back plate according to a preferred embodiment of the present invention; FIG. 5 is a schematic view of a backlight module according to a preferred embodiment of the present invention; A schematic diagram of a backlight module according to a preferred embodiment of the present invention, and FIG. 7 is a schematic diagram of a liquid crystal display device in accordance with a preferred embodiment of the present invention. 13 1361314
元件符號說明： 1 ' 2 1 背光模組 11、 2 背板 12、 31 燈管 13、 32 燈管固定座 14、 33 燈管保護件 15、 35 光學膜片組 151 擴散板 16、 36 框體 17 支撐件 171 錐部 21 背板本體 211 孔洞 212 側緣 22 凸部 221 轉折結構 23 套件 24 反射片 241 通孔 34 光學板片 4 液晶顯不裝置 41 液晶顯不面板 42 外框 Η 南度Description of component symbols: 1 ' 2 1 Backlight module 11, 2 Back plate 12, 31 Lamp 13, 32 Lamp holder 14, 33 Lamp protection 15, 35 Optical diaphragm group 151 Diffusion plate 16, 36 Frame 17 Support member 171 Cone 21 Back plate body 211 Hole 212 Side edge 22 Protrusion 221 Folding structure 23 Kit 24 Reflector 241 Through hole 34 Optical plate 4 Liquid crystal display device 41 Liquid crystal display panel 42 Frame Η South