200903103 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種背光模組及採用該背光模組之液晶 頒不為，尤指一種用於大尺寸液晶顯示器之直下式背光模 組及採用該背光模組之液晶顯示器。 【先前技術】 、由於液晶顯示器面板中之液晶本身不發光，因而，為 達到顯示效果’須給液錢示器面 ::編，以實現顯示功能。背光模組按結=光 式月光模組及直下式背光模組。 隨著液晶顯示器應用領域之不斷拓展，特別是大尺寸 液晶顯示器之應用，如液晶電視等，料晶顯示器 拉=出光輝度要求進—步提高，f要使用複數發光元件 以提南整個背井描;4日> ψ t @ # .. =純組之^輝度，傳統之側光式背光模組 出光輝度之要求，因此直下式背光模組成為 大尺寸液日日顯示器之主流。 凊參閱圖1，係一種先前技術直下式背光模組之示音 圖。該背光模組10包括一框架15、複數光源14、—擴^ 板U及一反射板12,該反射板12、複數光源14及—擴 板11自下而上依次收容於該框架15内。該光源Μ發出^ 先線直接或經反射板12反射後經由擴散板11傳送^面向 ^光模組1G設置的液晶面板，使得液晶面板獲得較佳的輝 然而，由於擴散板n中間有極大面積懸空於光源Μ 200903103 上方’當液晶顯示裝置的尺寸越來越大時 中擴散板11的尺寸也會相對綠 月先核，，且10 大體積與重量，在安Λ散板11具有較 迕m下千 為谷易受其自重的關係而 = = 外，光源14所產生的熱度與其周圍濕 2三心a 目〶谷易造成擴散板11的變形，從而使得背 尤干衧性艾差，進而影像液晶顯示裝置的顯示效 果。 解決方法係在擴散板及反射板之間增加支 牙兀件27 (如目2所示）’該支樓元件27一端固定於框芊 25, -端抵住擴散板21以保持擴散板2ι在預定位置 免擴散板21 f曲變形，改善背光模組的光學特性。缺而由 於擴散板2i與框架25之間的組裝通常具有一公差間隙， 因此’在月光杈組X到震動或衝擊時或者擴散板Η在埶漲 冷縮的過程中’亦會與支撐元件27之間產生平行於擴散板 方向的相互運動’並因彼此的相互摩擦而造成毛屑與里 音，而進一步造成背光模組1()光學特性變差。 、/、 【發明内容】 有鑑於上述内容，提供一種可改善背光模組之光學特 性之直下式背光模組實為必要。 ' 另，提供一種採用上述直下式背光模組之液晶顯示 置實為必要。 一種直下式背光模組，其包括—擴散板、一支撐元件 及收容該擴散板及支撐元件於其内之框架，該支撐元件包 括一支撐部及一緩衝部，該緩衝部與該支撐部相連，該^ 200903103 衝部係具有彎折之桿狀結構，該框架包括一底板，該支撐 .元件設置在該底板與該擴散板之間，該支撐部與該擴散板 抵接。 一種直下式背光模組’其包括一擴散板、一支撐元件 及收容該擴散板及支撐元件於其内之框架，該支撐元件包 括依次相連的支撐部及緩衝部，該框架包括一底板，該支 撐元件設置在該底板與該擴散板之間，該支撐部藉由緩衝 部之形變對擴散板提供垂直及水平方向之支撐力以抑制擴 散板之變形。 一種液晶顯示裝置，其包括一液晶面板及鄰近該液晶 面板設置之直下式背光模組。該直下式背光模組包括一擴 散板、一支撐元件及收容該擴散板及支撐元件於其内之框 架》亥支撐元件包括-支撐部及一缓衝部，該緩衝部與該 支擇部相4 ’該緩衝部係具有彎折之桿狀結構，該框架包 括二底板，該支撐元件設置在該底板與該擴散板之間，該 支撐部與該擴散板抵接。 種液曰曰顯不裝置’其包括—液晶面板及鄰近該液晶 面板設置之直下式背光模組。該直下式背光模組包括一擴 散板:-支撐元件及收容該擴散板及支撐元件於其内之框 架，该支撐元件包括依次相連的支撐部及緩衝部，該框架 =::反，該支撐元件設置在該底板與該擴散板之間， 措由緩衝部之形變對擴散板提供垂直及水平方向 之支#力以抑制擴散板之變形。 相較於先前技術，本發明之直下式背光模組及液晶顯 8 200903103 示裝置藉由桿狀緩衝結構對擴散板提㈣直及水平方 支撐力以抑制擴散板之變形，該支撐元件可隨擴 動而自行調整變形並給予擴散板以的支撐，從而緩衝擴 散板發生移動時產生之摩擦及異音，故其Η傷宝擴气 板，改善背光模組的光學特性1而提高液晶 置 顯示效果。 不且叼 【實施方式】 請參閱目3,係、本發明背光模組第一實施方式之側視 結構示意圖。該背光模組係一直下式背光模組，苴包 括一框架乃〇、一反射板220、複數光源240、一擴散板21〇 及一支撐元件270,該複數光源24〇、擴散板21〇及支撐元 件270收容於該框架250内。 該反射板220鄰近該框架250之底板設置，且該反射 板220及框架250之底板上對應設置複數穿孔，以供支撐 元件270穿過固定。該光源24〇以固定間隔成列平行設置 在反射板220上方，該光源240係冷陰極螢光燈管。該擴 散板210配置在框架250上’位於光源240上方。 凊一併參閱圖4及圖5，圖4係圖3所示背光模組之 支撐元件之立體示意圖，圖5係圖3所示背光模組之支撐 元件之另一視角之側視圖。該支撐元件27〇包括一固定部 272、一緩衝部274及一支撐部276。該支撐部276係一錐 體’其頂端與擴散板210抵接。該固定部272包括一圓盤 (未標示）及設置於該圓盤上之二相對設置之半圓形環狀 彈性卡勾（未標示）’該彈性卡勾包括頭部2724及桿部 200903103 2722,該頭部2724半徑大於該桿部 半徑與框架250及反射板22〇之穿 位干部2722 則四根對稱設置之細桿，每==配。該緩衝部 =形結構，且鄰近圓盤設置之彎折部為第4二广 另-處為第二彎折部，各細桿之兩端分別與該支⑴ 之底部及固定部272之圓盤相連。該支揮元件27〇: 部272、一緩衝部274及一支撐部π係一體成型。 請-併參照圖6,係背光模組組裝後之部分截面干音 圖。組裝時’ f先將反射板220置於框架25〇之底板上了 錢射板220及底板上之穿孔對應；接著，扳動以部奶 ::性卡勾’使得該彈性卡勾由反射板22〇及底板置穿孔 伸出’亚利用彈性卡勾之自身彈性發生形變穿過穿孔，卡 合固定於框架250’此時，該桿部助與該穿孔之側壁抵 接，該頭部2 7 2 4卡於該框架2 5 〇之底板背面；然後將光源 240收容固定於框架25〇，在將擴散板2ι〇配置於框架㈣ 上，此時，該擴散板210與該支撐元件27〇之支撐部276 抵接。 在月光杈組200受到震動或衝擊時或者擴散板21〇在 熱漲冷縮的過程中，擴散板210發生移動時，該緩衝部274 受力使得該二彎折部發生彎曲變形，以致該支撐部276之 頂端在水平及垂直方向之一可動範圍内移動，且該第二彎 ，部可與第—f折部相互牽制，控制變形的程度，以給擴 散板210提供足夠的支撐力，限制該擴散板21〇的彎曲變 形。該支撐元件270可隨擴散板210之震動而自行調整變 10 200903103 形並給予擴散板2i〇足夠的支撐，從而緩衝擴散板21〇發 生移動時產生之摩擦及異音’故其不易傷害擴散板21〇， 從而改善背光模組200的光學特性。 請參閱圖7’係本發明背光模組第二實施方式之支撐 凡件之不意圖。該支撐元件370與第一實施方式之支撐元 件270結構類似，其區別在於：該支撐元件之緩衝部 係—對稱没置之細桿，該細桿包括複數連續彎折之“ S ’， 形彎折部。 α月芩閱圖8，係本發明液晶顯示裝置之示意圖。該液 晶顯示裝置2包括一液晶面板29〇及—鄰近該液晶面板 290設置之背光模組，該背光模組可採用上述第一實施方 式或第二實施方式之背光模組。該液晶顯示裝置具有較佳 的顯示效果。 惟，本發明並不限於上述實施方式所述，例如：哼支 樓元件之固定部亦可僅包括其係藉由黏貼固^於 反射板上，亦可以僅在反射板上設置穿孔，藉由黏貼固定 於框架上，該支撐元件藉由螺絲鎖固亦可，並不限於上述 實施方式所述丨該支撐元件之細桿個數、彎折個數可以根 據需要變更設計；該支撐部之形狀、大小亦可根據需要變 更設計’收容該光源及支撐元件之框架亦可為其他 材料，而非一定為金屬，只要可以起到收容作用即可。、 綜上所述，本發明確已符合發明專利之要件，λ ' 提出專利申請。惟，以上所述者僅為本發明之較 式，本發明之範圍並上述實施方式為限，•凡 200903103 等效修_或變化 案技蟄之人士援依本發明之精神所作之 皆應涵蓋於以下申請專利範圍内。 I[圖式簡單說明】 圖1係—種先前技術背光模組之示意圖。 圖2係另種先七技術背光模組之示意圖。 圖3係本發明背光模组容 ® 4 # FI 、 貝'轭方式之側視結構示意圖。 模組之支樓元件之立體示意圖。 圖3所示背光模組之支樓元件之另-視角之侧示 圖 ° =6係背光模組組裝後之部分截面示意圖。 ^係本發明背光模組第二實施方式之支撐元件之示意 圖。 圖8係本發明液晶顯示裝置之示意圖。 【主要元件符號說明】 液晶顯示裝置 直下式背光模組 反射板 框架 固.定部 桿部 支擇部 2 ’夜晶面板 290 200 擴散板 210 220 光源 240 250 支撐元件 270 ' 370 272 緩衝部 274 2722 276 頭部 2724 12200903103 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a liquid crystal display using the same, especially a direct-type backlight module for a large-size liquid crystal display The liquid crystal display of the backlight module. [Prior Art] Since the liquid crystal in the liquid crystal display panel itself does not emit light, in order to achieve the display effect, it is necessary to give a liquid display surface to edit the display function. The backlight module is connected with a light-emitting moonlight module and a direct-lit backlight module. With the continuous expansion of the application field of liquid crystal displays, especially the application of large-size liquid crystal displays, such as LCD TVs, the material crystal display pull = the brightness of the light is required to be improved step by step, and the complex light-emitting elements are used to describe the entire back well. 4th> ψ t @ # .. = pure brightness of the group, the traditional edge-lit backlight module requires light, so the direct-lit backlight module becomes the mainstream of large-size liquid day and day display. Referring to Figure 1, there is shown a sound diagram of a prior art direct type backlight module. The backlight module 10 includes a frame 15, a plurality of light sources 14, a expansion plate U, and a reflection plate 12. The reflection plate 12, the plurality of light sources 14 and the expansion plate 11 are sequentially received in the frame 15 from bottom to top. The light source is emitted directly or through the reflection plate 12, and then transmitted through the diffusion plate 11 to face the liquid crystal panel disposed on the optical module 1G, so that the liquid crystal panel obtains better brightness, however, due to the large area in the middle of the diffusion plate n Suspended in the light source Μ 200903103 above 'When the size of the liquid crystal display device is getting larger and larger, the size of the diffuser 11 will also be compared with the green moon, and 10 volumes and weights will be more 迕m in the ampere plate 11 The next thousand is valleys susceptible to their own weight relationship = = outside, the heat generated by the light source 14 and its surrounding wet 2 three-hearted a mesh valleys easily cause the deformation of the diffuser 11 so that the back is particularly dry, and thus The display effect of the image liquid crystal display device. The solution is to add a supporting jaw 27 between the diffusing plate and the reflecting plate (as shown in FIG. 2). One end of the branch member 27 is fixed to the frame 25, and the end is against the diffusing plate 21 to keep the diffusing plate 2ι in the The predetermined position of the diffusion-free plate 21 is deformed to improve the optical characteristics of the backlight module. However, since the assembly between the diffuser plate 2i and the frame 25 usually has a tolerance gap, it is also associated with the support member 27 during the moonlight 杈 group X to shock or impact or during the process of swelling and shrinking. The mutual movement between the directions of the diffusion plates is generated and the shavings and the sounds are caused by mutual friction, which further deteriorates the optical characteristics of the backlight module 1 (). SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a direct type backlight module that can improve the optical characteristics of a backlight module. In addition, it is necessary to provide a liquid crystal display using the above-described direct type backlight module. A direct type backlight module includes a diffusion plate, a supporting member and a frame for receiving the diffusion plate and the supporting member, the supporting member includes a supporting portion and a buffer portion, and the buffer portion is connected to the supporting portion The ^200903103 punching portion has a bent rod-like structure, and the frame includes a bottom plate, and the supporting member is disposed between the bottom plate and the diffusing plate, and the supporting portion abuts against the diffusing plate. A direct type backlight module includes a diffusion plate, a supporting member and a frame for receiving the diffusion plate and the supporting member, wherein the supporting member comprises a supporting portion and a buffer portion which are sequentially connected, and the frame comprises a bottom plate. The supporting member is disposed between the bottom plate and the diffusing plate, and the supporting portion provides a vertical and horizontal supporting force to the diffusing plate by deformation of the buffer portion to suppress deformation of the diffusing plate. A liquid crystal display device includes a liquid crystal panel and a direct type backlight module disposed adjacent to the liquid crystal panel. The direct-type backlight module includes a diffusion plate, a supporting component, and a frame for accommodating the diffusion plate and the supporting component therein. The supporting member includes a support portion and a buffer portion, and the buffer portion is opposite to the supporting portion. 4' The buffer portion has a bent rod-like structure, the frame includes two bottom plates, and the supporting member is disposed between the bottom plate and the diffusing plate, and the supporting portion abuts against the diffusing plate. The liquid crystal display device includes a liquid crystal panel and a direct type backlight module disposed adjacent to the liquid crystal panel. The direct-type backlight module includes a diffusion plate: a support member and a frame for receiving the diffusion plate and the support member, the support member includes a support portion and a buffer portion connected in sequence, the frame =:: reverse, the support The component is disposed between the bottom plate and the diffusion plate, and the deformation of the buffer portion provides a vertical and horizontal support force to the diffusion plate to suppress deformation of the diffusion plate. Compared with the prior art, the direct type backlight module and the liquid crystal display device of the present invention provide a (four) straight and horizontal support force to the diffusion plate by the rod-shaped buffer structure to suppress the deformation of the diffusion plate, and the support member can follow The expansion is self-adjusting the deformation and giving the support of the diffusion plate, thereby buffering the friction and abnormal sound generated when the diffusion plate moves, so that it damages the air diffusion plate, improves the optical characteristics of the backlight module, and improves the liquid crystal display. effect. [Embodiment] Please refer to FIG. 3 for a side view of the first embodiment of the backlight module of the present invention. The backlight module is a direct-type backlight module, and includes a frame, a reflector 220, a plurality of light sources 240, a diffusion plate 21, and a supporting member 270, the plurality of light sources 24, the diffusion plate 21, and The support member 270 is received within the frame 250. The reflector 220 is disposed adjacent to the bottom plate of the frame 250, and a plurality of perforations are provided on the bottom plate of the reflector 220 and the frame 250 for the support member 270 to pass through. The light sources 24 are arranged in parallel at a fixed interval in a row above the reflecting plate 220, which is a cold cathode fluorescent lamp. The diffuser plate 210 is disposed on the frame 250 & is located above the light source 240. 4 and FIG. 5, FIG. 4 is a perspective view of a support member of the backlight module shown in FIG. 3, and FIG. 5 is a side view of another view of the support member of the backlight module shown in FIG. The support member 27 includes a fixing portion 272, a buffer portion 274 and a supporting portion 276. The support portion 276 is a cone body whose top end abuts against the diffusion plate 210. The fixing portion 272 includes a disc (not shown) and two oppositely disposed semicircular annular elastic hooks (not labeled) disposed on the disc. The elastic hook includes a head 2724 and a rod portion 200003103 2722 The radius of the head portion 2724 is larger than the radius of the rod portion and the piercing trunk portion 2722 of the frame 250 and the reflection plate 22〇 are four symmetrically disposed thin rods, each of which is matched. The buffer portion is a shape-shaped structure, and the bent portion disposed adjacent to the disk is the fourth and second portions, and the second bent portion is at the same time, and the two ends of each thin rod are respectively rounded with the bottom of the branch (1) and the fixed portion 272 The discs are connected. The branching member 27〇: the portion 272, a buffer portion 274, and a support portion π are integrally formed. Please - and refer to Figure 6, which is a partial cross-sectional dry sound diagram of the assembled backlight module. When assembling, f first place the reflector 220 on the bottom plate of the frame 25〇 on the money plate 220 and the perforation on the bottom plate; then, pull the partial milk:: sex hook to make the elastic hook be reflected by the reflector 22〇 and the bottom plate are provided with perforations. The elastic deformation of the sub-elastic hook is formed through the perforation, and the clip is fixed to the frame 250'. At this time, the rod portion abuts against the side wall of the perforation, the head portion 7 7 2 4 is stuck on the back surface of the bottom plate of the frame 2; then, the light source 240 is received and fixed to the frame 25A, and the diffusion plate 2ι is disposed on the frame (4). At this time, the diffusion plate 210 and the supporting member 27 are disposed. The support portion 276 abuts. When the moonlight group 200 is subjected to vibration or impact or the diffusion plate 21 is in the process of heat expansion and contraction, when the diffusion plate 210 moves, the buffer portion 274 is forced to bend and deform the two bending portions, so that the support The top end of the portion 276 moves in a movable range of one of the horizontal and vertical directions, and the second curved portion can be mutually restrained from the first f-fold portion to control the degree of deformation to provide sufficient supporting force to the diffusion plate 210 to limit The diffusion plate 21 is bent and deformed. The supporting member 270 can be self-adjusted according to the vibration of the diffusing plate 210 and provided sufficient support to the diffusing plate 2i, thereby buffering the friction and abnormal sound generated when the diffusing plate 21 is moved, so that it is not easy to damage the diffusing plate. 21〇, thereby improving the optical characteristics of the backlight module 200. Please refer to FIG. 7' for the purpose of supporting the second embodiment of the backlight module of the present invention. The support member 370 is similar in structure to the support member 270 of the first embodiment, except that the buffer portion of the support member is a symmetrically unshaped thin rod comprising a plurality of consecutively bent "S", curved Figure 8 is a schematic view of a liquid crystal display device of the present invention. The liquid crystal display device 2 includes a liquid crystal panel 29 and a backlight module disposed adjacent to the liquid crystal panel 290. The backlight module of the first embodiment or the second embodiment. The liquid crystal display device has a better display effect. However, the present invention is not limited to the above embodiment, for example, the fixing portion of the truss member may be only In addition, the fixing member is fixed on the reflecting plate, and the perforating plate can be provided only on the reflecting plate, and the supporting member can be fixed by screwing. The supporting member can be locked by screws, and is not limited to the above embodiment.丨 The number of thin rods and the number of bends of the support member can be changed as needed; the shape and size of the support portion can be changed as needed to accommodate the light source and the support member. The frame may also be other materials, not necessarily metal, as long as it can serve as a containment. In summary, the present invention has indeed met the requirements of the invention patent, λ ' filed a patent application. The scope of the present invention is limited to the scope of the present invention, and the scope of the present invention is limited to the scope of the present invention. Anyone who is in accordance with the spirit of the present invention should be covered by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1 is a schematic diagram of a prior art backlight module. FIG. 2 is a schematic diagram of another first seven technology backlight module. FIG. 3 is a backlight module of the present invention, 4 # FI, Schematic diagram of the side view of the yoke method. A perspective view of the components of the module. Figure 3 shows the side view of the component of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 8 is a schematic view of a supporting member of a second embodiment of the backlight module of the present invention. Fig. 8 is a schematic view of a liquid crystal display device of the present invention. [Description of main components] Liquid crystal display device direct type backlight module Plate frame fixing part rod part selection 2 ‘night crystal panel 290 200 diffuser 210 220 light source 240 250 support element 270 ' 370 272 buffer part 274 2722 276 head 2724 12