M345256 八、新型說明： 【新型所屬之技術領域】 本創作涉及一種背光模組，尤其涉及一種一體成型的 背光模組之框架。 【先前技術】 液晶顯示裝置具有輕、薄、耗電小等優點，而被廣泛 應用於筆記本電腦、行動電話、PDA等電子產品上。液晶 顯示裝置具有一背光模組，背光模組包括框架和組裝於框 架上的光學元件，框架一般由金屬背框和膠框構成。為了 減小背光模組的厚度和增大其結構強度，習知技術中出現 了膠框與金屬背框以模内射出成型（Insert Molding)的方 式結合的框架。 請參閱第一圖，為一種習知背光模組之框架的結構示 意圖，該框架包括一金屬背框10’及一膠框20’。所述金屬 背框10’具有一底板11’和垂直連接於底板11’的侧板12’， 其中兩相對的侧板12’上分別開設有破孔13’。所述膠框20’ 利用模内射出成型技術使熔融的塑膠射入破孔13’並成型 於金屬背框10’上，從而使金屬背框10’與膠框20’形成為 一體，進而使金屬背框10’與膠框20’牢固結合。然而，背 光模組的膠框20’在注塑成型時，熔融的塑膠通過破孔 13’，這造成熔融的塑膠在流入破孔13’時的保壓時間長， 因此造成熔融的塑膠流動性差，從而不利於膠框20’成型於 M345256 金屬背框10’上。 【新型内容】 本創作之目的係針對上述習知技術存在之缺陷提供一 種有利於膠框成型於金屬背框上的背光模組之框架。 為達成上述目的，本創作之背光模組之框架包括一金 屬背框及-膠框。金屬背框具有—底板，所述底板的周緣 向上垂直延伸有多個側板，至少一側板形成有彎折的卡固 •結構。膠框具有一體成型於金屬背框之侧板内侧的框壁及 成型於相應框壁上的卡固部，該卡固部與所述卡固結構嵌 合在一起。 如上所述，本創作之背光模組之框架藉由金屬背框之 側板形成的彎折的卡固結構，因此在注射成型膠框時，注 射塑膠的方向無論是從上往下、從下往上或是從侧面往中 心方向，卡固結構的設計都能增加注射塑膠的流動性，從 瞻而可縮錐保壓時間，進而利於膠框成型在金屬背框上。 ' 【實施方式】 為詳細說明本創作之技術内容、構造特徵、所達成目 的及功效’以下茲例舉實施例並配合圖式詳予說明。 請參閱第二圖及第三圖，其為本創作背光模組之框架工 的第一實施例，包括一金屬背框10及一膠框20。金屬背框 1〇具有/矩形板狀的底板11，所述底板11的四個周緣分 別向上粢直延伸有侧板12，該等四個側板12彼此不相連 6 M345256 接’從而在相鄰的兩侧板π之間間隔一定距離，其中兩相 對的侧板12上設有—^固結構，在本實施例中，該卡固結 構係由側板12的中部向外彎折而於側板12的内側凹陷形 成的一横向延伸至侧板12兩侧邊緣的凹槽13。 請參閱第三圖及第四圖，膠框20注塑成型在所述金屬 背框10上，其具有成型在侧板12内侧的首尾相連接的框 壁21及成型於相應框壁21上的與卡固結構相對應的+$ • 部。該卡固部為成型在相應的侧板12内側面中部的凸部 22 ’該凸部22與凹槽13相嵌合。膠框20和金屬背框1〇 圍成的容納空間用以容納光學元件（圖中未示）。 請參閱第五圖，其為本創作背光模組之框架丨之第一 實施例。在本實施例中，背光模組之框架1與第一實施例 中背光模組之框架1結構基本相同，其不同之處在於·在 本實施例中，所述卡固結構係由所述側板12的中部向内彎 瞻折而形成的—橫向延伸至侧板12兩侧邊緣的向内凸出的凸 • 出部14,所述卡固部為一成型於相應框壁21外側面上的凹 Ρ曰槽23 ’所述凸出部嵌合在凹陷槽23内。 本創作背光模組之框架1的金屬背框1〇之卡固結構亦 可以為由侧板12反復彎折而形成的凸凹相間之結構，膠框 2〇庄塑成型在所述金屬背框1〇上，且在框壁上成型出 與側板12上凸凹相間之結構對應嵌合的卡固部。 本創作θ光模組之框架1的金屬背框1 〇之側板12亦 M345256 可以局部形成所述彎折的卡固結構。 綜上所述，本創作背光模組之框架1係由金屬背框10 的侧板12上形成彎折的卡固結構，在注射成型膠框20時， 注射塑膠的方向無論是從上往下、從下往上或是從侧面往 中心方向，卡固結構的設計都能增加注射塑膠的流動性， 從而可縮短保壓時間，進而利於膠框20成型在金屬背框10 上。 【圖式簡單說明】 第一圖係一種習知技術背光模組之框架的立體組合 圖。 第二圖係本創作背光模組之框架第一實施例的立體分 解圖。 第三圖係第二圖所示背光模組之框架的立體組合圖。 第四圖係第三圖所示背光模組之框架沿IV-IV線之剖 視圖。 第五圖係本創作背光模組之框架第二實施例的立體分 解圖。 【主要元件符號說明】 [本創作] 背光模組之框架1 金屬背框 10 底板 11 侧板 12 凹槽 13 凸出部 14 8 M345256 膠框 20 框壁 21 凸部 22 凹陷槽 23 [習知技術] 金屬背框 10’ 底板 11， 側板 12^ 破孔 13, 膠框 20， 9M345256 VIII. New Description: [New Technology Field] The present invention relates to a backlight module, and more particularly to a frame of an integrally formed backlight module. [Prior Art] The liquid crystal display device has advantages of being light, thin, and low in power consumption, and is widely used in electronic products such as notebook computers, mobile phones, and PDAs. The liquid crystal display device has a backlight module. The backlight module includes a frame and optical components assembled on the frame. The frame is generally composed of a metal back frame and a plastic frame. In order to reduce the thickness of the backlight module and increase the structural strength thereof, a frame in which a plastic frame and a metal back frame are combined in an in-mold injection molding manner has appeared in the prior art. Please refer to the first figure, which is a structural schematic of a frame of a conventional backlight module, which comprises a metal back frame 10' and a plastic frame 20'. The metal back frame 10' has a bottom plate 11' and a side plate 12' vertically connected to the bottom plate 11', wherein the opposite side plates 12' are respectively provided with a broken hole 13'. The plastic frame 20' is injected into the broken hole 13' by the in-mold injection molding technology and formed on the metal back frame 10', so that the metal back frame 10' and the plastic frame 20' are integrally formed, thereby The metal back frame 10' is firmly bonded to the plastic frame 20'. However, when the plastic frame 20' of the backlight module is injection molded, the molten plastic passes through the broken hole 13', which causes the molten plastic to have a long holding time when flowing into the broken hole 13', thereby causing poor flowability of the molten plastic. Therefore, it is disadvantageous that the plastic frame 20' is formed on the M345256 metal back frame 10'. [New Content] The purpose of this creation is to provide a frame for a backlight module that is molded on a metal back frame in view of the defects of the above-mentioned prior art. In order to achieve the above objectives, the frame of the backlight module of the present invention comprises a metal back frame and a plastic frame. The metal back frame has a bottom plate, and a plurality of side plates extend vertically upward from the periphery of the bottom plate, and at least one of the plates is formed with a bent fastening structure. The plastic frame has a frame wall integrally formed on the inner side of the side plate of the metal back frame and a fastening portion formed on the corresponding frame wall, and the fastening portion is fitted with the fastening structure. As described above, the frame of the backlight module of the present invention has a bent structure formed by the side plates of the metal back frame, so that when the plastic frame is injection molded, the direction of the injection plastic is from top to bottom and from bottom to bottom. On the top or from the side to the center, the design of the fastening structure can increase the fluidity of the injected plastic, and the shrinking cone can keep the pressing time, thereby facilitating the molding of the plastic frame on the metal back frame. [Embodiment] The technical contents, structural features, objectives, and effects of the present invention will be described in detail. The embodiments are described below in detail with reference to the drawings. Referring to the second and third figures, which is a first embodiment of the frame of the backlight module, a metal back frame 10 and a plastic frame 20 are included. The metal back frame 1 has a bottom plate 11 having a rectangular plate shape, and the four peripheral edges of the bottom plate 11 respectively extend upwardly with a side plate 12, and the four side plates 12 are not connected to each other 6 M345256 is connected to each other The two side plates π are separated by a certain distance, and the two opposite side plates 12 are provided with a solid structure. In the embodiment, the fastening structure is bent outward from the central portion of the side plate 12 to the side plate 12 A recess 13 extending laterally to the side edges of the side panels 12 is formed by the inner recess. Referring to the third and fourth figures, the plastic frame 20 is injection molded on the metal back frame 10, and has a frame wall 21 connected to the inner side of the side plate 12 and a frame wall 21 formed on the corresponding frame wall 21. The corresponding $+ part of the card structure. The engaging portion is a convex portion 22' formed in the middle of the inner side surface of the corresponding side plate 12, and the convex portion 22 is fitted to the recess 13. The plastic frame 20 and the metal back frame 1 are enclosed by an accommodation space for accommodating optical components (not shown). Please refer to the fifth figure, which is the first embodiment of the framework of the creative backlight module. In this embodiment, the frame 1 of the backlight module is substantially the same as the frame 1 of the backlight module in the first embodiment, and the difference is that in the embodiment, the fastening structure is formed by the side plate. The central portion of the 12 is bent inwardly to extend inwardly to the inwardly projecting convex portion 14 of the side edges of the side panel 12, and the fastening portion is formed on the outer side surface of the corresponding frame wall 21. The projections of the recessed grooves 23' are fitted in the recessed grooves 23. The fixing structure of the metal back frame 1 of the frame 1 of the backlight module of the present invention may also be a structure of convex and concave formed by repeated bending of the side plate 12, and the plastic frame 2 is molded on the metal back frame 1 On the upper side of the frame, a fastening portion corresponding to the structure between the convex and concave portions of the side plate 12 is formed on the frame wall. The side panel 12 of the metal back frame 1 of the frame 1 of the θ optical module of the present invention can also partially form the bent fastening structure. In summary, the frame 1 of the backlight module of the present invention is formed by a bent structure of the side plate 12 of the metal back frame 10, and the direction of the injection plastic is from top to bottom when the plastic frame 20 is injection molded. From the bottom to the top or from the side to the center, the design of the fastening structure can increase the fluidity of the injected plastic, thereby shortening the holding time and facilitating the molding of the plastic frame 20 on the metal back frame 10. [Simple description of the drawings] The first figure is a three-dimensional combination diagram of a frame of a conventional backlight module. The second figure is a perspective exploded view of the first embodiment of the frame of the present backlight module. The third figure is a three-dimensional combination diagram of the frame of the backlight module shown in the second figure. The fourth figure is a cross-sectional view of the frame of the backlight module shown in the third figure along line IV-IV. The fifth figure is a perspective exploded view of the second embodiment of the frame of the present backlight module. [Main component symbol description] [This creation] Backlight module frame 1 Metal back frame 10 Base plate 11 Side plate 12 Groove 13 Projection 14 8 M345256 Plastic frame 20 Frame wall 21 Projection 22 Depression groove 23 [Prior art ] Metal back frame 10' bottom plate 11, side plate 12^ broken hole 13, plastic frame 20, 9