201024855 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其製造方法。 【先前技術】 液晶顯示裝置作為一種平面顯示裝置，因其具有輝度高、重量 輕及耗電少等優點，而被廣泛應用於各種家用電器及辦公設備中。 而因為液晶顯示裝置中之液晶本身不具有發光特性，通常需要為其 提供一背光模組以實現顯示功能。201024855 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a backlight module and a method of fabricating the same. [Prior Art] As a flat display device, a liquid crystal display device is widely used in various home appliances and office equipment because of its advantages of high luminance, light weight, and low power consumption. Since the liquid crystal in the liquid crystal display device itself does not have a light-emitting property, it is usually required to provide a backlight module to realize the display function.
請參閱圖1，係一種先前技術背光模組之立體分解圖。該背光模 組I2包括一背板13、一反射片14、一導光板15、一膠框16、複數光 源17及一擴散片18。該背板13包括四侧壁131及一與該四侧壁131 垂直連接之底板132。該導光板15包括一入光面、一與該入光面 151相鄰之出光面152及一與該出光面152相對之底面(未標示）。該背 板I3與該膠框I6結合形成一收容空間(未標示），該反射片w、該導 光板15、該光源π及該擴散片18收容於該收容空間内。其中，該反 射片14位於該底板132與該導光板15之底面之間。該光源17鄰近該 導光板15之入光面151設置。該擴散# 18鄰近該導光板13之 ^導光板15之底面上分佈有網點(圖未示），該網點用於擴 散該先源Π人紅該絲之光線，以使科光板均钟光。、 惟，目前該背光模㈣之f板13、膠框16及反射片 相互分離之三部份，故細捉通常馬 該背光模組12之製造成光^ 12時需要較多之工序，導致 射片Μ因為存在_二组裝後之該背板13、膠柩16及反 常係金屬㈣f 背光模組12之厚度較厚。該背板U通 换用兮厶凰推 *為金屬之重量通常較重且價格較高，所以造成 採用該金屬背板13之哕呰 W以k成 饥J之》亥旁先模組12之重量較重且其製造成本進一 6 201024855 步提高。 .【發明内容】 -有鑑於此’提供—種製造成本較低、厚度較薄及重量較輕之背光模 組實為必要。 有鑑於此，提供—種製造成本較低、厚度較薄及重量較輕之背光模 組之製造方法實為必要。 種ί光模，，且，其包括複數光學元件及一收容固定該複數光學元 件之組合框架。她合框架包括—f板及—反騎。該背板包括一底 ©板。該底板設置有複數通孔。該反射層包覆該底板並填充該通孔。 :種背光做之製造方法，其包括如下步驟：步驟—：提供一設 置有複數通孔之丨板，步驟二·提供成型框與反射層之材料及模具， 並將該背減胁雜糾，轉成型轉框無反射層，使該背板、 該膠框與該反射層結合為一體，形成一收容空間；步驟三：提供光學 元件，將該光學元件置於該容納空間内。 相較於先前技術，本發明背光模組包括該組合框架n亥背光 組合框架與其他光學元件進行組裝即可。故，組_背 u ZU之工序減少，使得該背光模組之製造成本降低。而該膠框 錢反射層為同時注縣型且無f板結合為—體，故，組裝後之該 #光模、，且之厚度車父薄。該背板之底板設置有通孔，注膠成型該反射層 所，之材料填滿魏孔。根_背光模組尺寸之㈣，相應合理之設 =該通孔之大小’則該背板與其通孔内之材料能夠保證該背:模組: 結構強度要求。而—般的，相同體積之反射層材料之重量輕於金屬之 重量、，且反射騎料之成本低於金屬敗成本，故，翻與該反射層 Μ為-體之背板之背光模組重量較輕，且該背光模組之製造成本進 7 201024855 一步降低。 .【實施方式】 請參閱圖2’係本發明背光模組第一實施方式之立體分解圖。該 背光模組22包括-導光板26、一擴散片27、複數光源28及一組合 框架烈。該組合框架29不僅用於收容固定該導光板26、該擴散片 27及该複數光源28，其還用於反射該光源28入射至其上之光線。 該組合框架29包括一背板23、一膠框24及一反射層25。該背 板23、該膠框24與該反射層25結合為一體，形成一收容空間(未標 參不）。該導光板26等光學元件收容於該收容空間。該導光板％設置 於》亥反射層25表面’其包括一入光面261、一與該入光面261相鄰 之出光面262及-與該出光面262相對之底面。該光源28鄰近該導 光板26之入光面261設置。該擴散片27鄰近該導光板26之出光面 262設置。 請參閱圖3’係圖2所示背光模組22之背板23之立體結構示意 圖。該背板23包括一底板231及與該底板231垂直連接之四侧壁 232。該底板231上設置有複數矩形通孔233。該背板23主要用於定 ❹位該導光板26,其通常由金屬材料製成以保證該背光模組22之結構 強度。該背板23可為鋁背板。 請參閱圖4，係圖2所示背光模組22沿IV-IV剖面示意圖。該 底板231包括一與該反射層25相接觸之内底面234。該四侧壁232 分別包括一與該底板231之内底面234相鄰之内表面235。該膠框 24包覆該側壁232之内表面235。該反射層25包覆該底板231及該 通孔233，並填滿該通孔233。該膠框24與該反射層25之材料相同， 其均為白色之高反射率之聚碳酸酯(p〇lycarb〇nate，pc)，且該反射層 25與該膠框24採用射出成型技術同時注膠成型。 8 201024855 請參閱圖5與圖6，圖5係圖3所示背板23之立體 • 6係圖2所示背光模組22之組合示意圖。該軸方圖 •包括如下步驟： 方法 步驟一.彻分段式加工方法製造該背板23 ; 焊接第一L形材236及四第二L形材撕利用録射 妾技朴接而成。該四第—L形材236分別包括—第 及與一該第一側臂238垂直連接之 ί 38 兮筮-彻丨壁mo & a 弟一丨署239。該弟一側臂238及 4弟-射239均包括一與該導光板％平行 ❿部份之自由端之端末垂直延伸出來之 ΐΓΐΙ!；"w 237 240 2I； 一財導jrZ241。該第三側臂240及該第四侧臂241均包括 邊垂纽及—自該水平部份之外侧 鐳射焊接技術接合時，首先，將該四第—L形材236 ===均包含兩第一L形材236，然後，將每—組之H • 239相焊接固定。故，該四第- l形材说成 ® ί未標示）。接著’將構成該二T形材之該第- L形材236 定後成H38相焊接固定，故，該四第一L形材236經過焊接固 疋後成為一呈“十，，字形材。最後，將該四第二L形材237之端叫八Please refer to FIG. 1 , which is an exploded perspective view of a prior art backlight module. The backlight module I2 includes a backing plate 13, a reflective sheet 14, a light guide plate 15, a plastic frame 16, a plurality of light sources 17, and a diffusion sheet 18. The back plate 13 includes four side walls 131 and a bottom plate 132 perpendicularly connected to the four side walls 131. The light guide plate 15 includes a light incident surface, a light exit surface 152 adjacent to the light incident surface 151, and a bottom surface (not labeled) opposite to the light exit surface 152. The backplane I3 and the plastic frame I6 are combined to form a receiving space (not shown). The reflective sheet w, the light guide plate 15, the light source π and the diffusion sheet 18 are received in the receiving space. The reflective sheet 14 is located between the bottom plate 132 and the bottom surface of the light guide plate 15. The light source 17 is disposed adjacent to the light incident surface 151 of the light guide plate 15. A dot (not shown) is disposed on the bottom surface of the light guide plate 15 adjacent to the light guide plate 13. The dot is used to diffuse the light of the source of the red light to make the light plate uniform. However, at present, the f-plate 13, the plastic frame 16 and the reflective sheet of the backlight module (4) are separated from each other by three parts, so that it is necessary to take more steps to manufacture the backlight module 12. The film Μ has a thicker thickness of the back plate 13, the glue 16 and the abnormal metal (four) f backlight module 12 after assembly. The U-turn of the backplane is replaced by the phoenix push*, and the weight of the metal is usually heavier and the price is higher, so that the use of the metal backing plate 13 is used to become a hungry J. The weight is heavier and its manufacturing cost is increased by 6 to 201024855. [SUMMARY OF THE INVENTION] - In view of this, it is necessary to provide a backlight module which is low in manufacturing cost, thin in thickness, and light in weight. In view of this, it is necessary to provide a manufacturing method of a backlight module which is low in manufacturing cost, thin in thickness, and light in weight. And a plurality of optical elements and a combined frame for receiving and fixing the plurality of optical elements. Her frame includes -f board and - anti-riding. The back panel includes a bottom plate. The bottom plate is provided with a plurality of through holes. The reflective layer covers the bottom plate and fills the through hole. A method for manufacturing a backlight, comprising the steps of: providing a raft provided with a plurality of through holes, and providing a material and a mold for forming the frame and the reflective layer, and reducing the backlash The rotating forming frame has no reflective layer, so that the backing plate, the plastic frame and the reflective layer are integrated to form a receiving space; and step 3: providing an optical component, the optical component is placed in the receiving space. Compared with the prior art, the backlight module of the present invention comprises the combined frame nhai backlight combination frame and other optical components for assembly. Therefore, the process of the group_back u ZU is reduced, so that the manufacturing cost of the backlight module is reduced. The plastic frame reflective layer is a simultaneous injection type and has no f-plate combined as a body, so the assembled optical mode is thin and the thickness of the vehicle is thin. The bottom plate of the back plate is provided with a through hole, and the reflective layer is formed by injection molding, and the material fills the Wei hole. The size of the root_backlight module (4), correspondingly reasonable = the size of the through hole 'the material in the back plate and its through hole can guarantee the back: module: structural strength requirements. Generally, the weight of the reflective layer material of the same volume is lighter than the weight of the metal, and the cost of the reflective riding material is lower than the cost of the metal. Therefore, the backlight module of the back plate of the reflective layer is turned over. The weight is lighter, and the manufacturing cost of the backlight module is reduced by one step in 201024855. [Embodiment] Please refer to FIG. 2' for an exploded perspective view of a first embodiment of a backlight module of the present invention. The backlight module 22 includes a light guide plate 26, a diffusion sheet 27, a plurality of light sources 28, and a combination frame. The combination frame 29 is not only for housing and fixing the light guide plate 26, the diffusion sheet 27, and the complex light source 28, but also for reflecting light incident on the light source 28. The assembly frame 29 includes a back plate 23, a plastic frame 24 and a reflective layer 25. The backboard 23 and the plastic frame 24 are integrated with the reflective layer 25 to form a receiving space (not shown). The optical element such as the light guide plate 26 is housed in the accommodating space. The light guide plate is disposed on the surface of the "reflecting layer 25". It includes a light incident surface 261, a light exit surface 262 adjacent to the light incident surface 261, and a bottom surface opposite to the light exit surface 262. The light source 28 is disposed adjacent to the light incident surface 261 of the light guide plate 26. The diffusion sheet 27 is disposed adjacent to the light exit surface 262 of the light guide plate 26. Please refer to FIG. 3' for a perspective view of the back plate 23 of the backlight module 22 shown in FIG. 2. The backplane 23 includes a bottom plate 231 and four side walls 232 that are vertically connected to the bottom plate 231. The bottom plate 231 is provided with a plurality of rectangular through holes 233. The back plate 23 is mainly used for aligning the light guide plate 26, which is usually made of a metal material to ensure the structural strength of the backlight module 22. The backing plate 23 can be an aluminum backing plate. Referring to FIG. 4, a schematic diagram of the backlight module 22 shown in FIG. 2 along the IV-IV cross-section is shown. The bottom plate 231 includes an inner bottom surface 234 that is in contact with the reflective layer 25. The four side walls 232 each include an inner surface 235 adjacent the inner bottom surface 234 of the bottom plate 231. The frame 24 encases the inner surface 235 of the sidewall 232. The reflective layer 25 covers the bottom plate 231 and the through hole 233, and fills the through hole 233. The frame 24 is the same as the material of the reflective layer 25, which is a white high reflectivity polycarbonate (p〇lycarb〇nate, pc), and the reflective layer 25 and the frame 24 are simultaneously injection molding technology. Injection molding. 8 201024855 Please refer to FIG. 5 and FIG. 6. FIG. 5 is a schematic diagram of the combination of the backlight module 23 shown in FIG. The axis diagram includes the following steps: Method Step 1. The segmented processing method is used to manufacture the backing plate 23; the welding of the first L-shaped material 236 and the fourth and second L-shaped material tearing are performed by using a recording technique. The four L-shaped members 236 respectively include - and a vertical connection with a first side arm 238, ί 38 丨 丨 mo mo mo 239 239 239. The younger side arm 238 and the fourth brother-shot 239 each include a 垂直 垂直 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; The third side arm 240 and the fourth side arm 241 each include a side sill and a laser welding technique from the outer side of the horizontal portion. First, the four L-shaped 236 === both include two The first L-shaped material 236 is then welded and fixed to each of the H-239 phases. Therefore, the four-l-shaped material is said to be ® ί not marked). Then, the first L-shaped material 236 constituting the two T-shaped members is fixed and fixed to the H38 phase. Therefore, the four first L-shaped members 236 are fixed by welding and become a "ten," shaped material. Finally, the end of the four second L-shaped material 237 is called eight
St十”字形材之該第一 L形材236之端部焊接固定。如。二 =3通孔233之該背板23虹裝完成。其中，該四n形材 主垂及該四第二L形材237之水平部份構成該底板攻， 其垂直°卩份構成該四側壁232。 :提供白色之高反料之__擔與模具，並將該 月 置於該模具内，以模内成型之方式結合該背板23、該膠框 9 201024855 24與該反射層25。 • 要實現步驟二所述之内容，需要對現有技術中注膠成型該膠框 _ 14之模具進行改進，使該模具能夠同時注膠成型該膠框24及該反射 層 25。 μ 步驟二·提供該導光板26，將其放置於該反射層25上。 步驟四：提供該光源28，將該光源28鄰近該導光板％之入光 面261放置。 步驟五：提供該擴散片27，將該擴散片 π碌导光板 φ之出光面262上 相較於先前技術’本發明背光模組22包括該組合框架29，組穿 該背光歡22時，將雜糾轉29與其他絲元倾雜裝即可; 故組裝該旁光模、组22所需之工序減少，使得該背光模组2之譽迕 成本降低。而該膠框24及該反射層25為同時注膠成型且與該背板^ 、=為-體’故，《後之該背光模組22之厚度較薄。該背板^之 設f有通孔233，注膠成型該反射層25所需之材料聚碳_ 、^滿該通孔233。根據該背光模組22尺寸之不同，相應合理之設計今 姆板23編孔233内之爾s旨材料能夠保 4 #先她22之結構強度要求。而一般的，相同體積 料之重量輕於金屬鋁之重量，且聚 ' 夂曰 太# p 材料之成本低於金屬鋁之成 ^故’ _與該反射層25結合為—體之f板23之背光模組22重量 乂至，且该背光模組22之製造成本進一步降低。 、、’ 請參閲圖7,其係本發明背光模組之背板之 =㈣第-實施方式之倾23之主要區別:二 之各部份之形狀與組成該背板23之 ： 43之各邱柃卢抹μ ^ 丨伪之形狀不同，而且將該背板 娜谇接於一起所形成之通孔切 201024855 .5並不Γ於上述實财式所述，其柯具有其他變更設計。 二 之孔233亦可以為三角形、橢圓形等規則形狀，或者係 •形狀之組合，還可以係不規則形狀。該背板23之底板231 f可包含_職、二财、三财、五财献量更多之通孔。該背 板23之通孔233亦可以為鏤刻而成。 該背板23之各部份亦可以採用其他焊接方法或組裝方法。 該膠框24與該反射層％之材料亦可為白色之高反射率之聚對苯 二甲㈣旨㈣yethyleneTe响h細，pET)，或者其他類似物。 ❹同樣，上面之變更設計亦__第二實施方式之背光模組。 綜上所述’本發明確已符合發明之要件，麦依法提出專利申請。 惟，以上所述者僅為本發明之較佳實施方式，本發明之範圍並不以上 述實施方式為限，舉凡齡本案之人士援依本削之精神所作之 等效修飾或變化，皆應涵蓋於以下申請專利範圍内。 【圖示簡單說明】 圖1係一種先則技術背光模組之立體分解圖。 冑2係本發明背光模組第—實施方式之立體分解圖。 © ®3侧2所示背光模組之背板之立體結構示意圖。 圖4係圖2所示背光模組沿！y_IV剖面示意圖。 圖5係圖3所示背光模組之背板之立體分解圖。 圖6係圖2所示背光模組之組合示意圖。 圖7係本發明背光模組之背板之第二實施方式結構示意圖。 【主要元件符號說明】 23 >43 背光模組 22背板 11 201024855 • ' 膠框 24 反射層 25 .導光板 26 擴散片 27 -光源 28 組合框架 29 入光面 261 出光面 262 底板 231 侧壁 232 通孔 233、433 内底面 234 内表面 235 第一 L形材 236 參第二L形材 237 第一侧臂 238 第二侧臂 239 第三侧臂 240 第四侧臂 241 ❿ 12The end portion of the first L-shaped material 236 of the St-shaped figure is welded and fixed. For example, the back plate 23 of the two=3 through holes 233 is completely finished, wherein the four n-shaped main hanging and the fourth second The horizontal portion of the L-shaped material 237 constitutes the bottom plate attack, and the vertical portion thereof constitutes the four side walls 232. The white high-reflection material is provided and the mold is placed in the mold to mold the month. The inner molding is combined with the back plate 23, the plastic frame 9 201024855 24 and the reflective layer 25. • To implement the content described in the second step, it is necessary to improve the mold of the prior art injection molding of the plastic frame _ 14 The mold frame 24 and the reflective layer 25 can be simultaneously injection molded. μ Step 2: The light guide plate 26 is provided and placed on the reflective layer 25. Step 4: The light source 28 is provided, and the light source 28 is provided. The light-incident surface 261 adjacent to the light guide plate is placed. Step 5: providing the diffusion sheet 27, the light-emitting surface 262 of the diffusion sheet π-light guide plate φ is compared with the prior art 'the backlight module 22 of the present invention includes the combination Frame 29, when the group wears the backlighting 22, the miscellaneous correction 29 and the other silk elements can be loaded; The process required to assemble the backlight module and the group 22 is reduced, so that the cost of the backlight module 2 is reduced. The plastic frame 24 and the reflective layer 25 are simultaneously injection molded and the back plate ^, = - The body of the backlight module 22 has a thinner thickness. The back plate has a through hole 233, and the material required for molding the reflective layer 25 is filled with carbon _, ^ 233. According to the size of the backlight module 22, the corresponding reasonable design of the material in the hole 233 of the slab 23 can guarantee the structural strength requirement of the first #22. In general, the weight of the same volume of material Lighter than the weight of the metal aluminum, and the cost of the poly' 夂曰太# p material is lower than that of the metal aluminum _, and the reflective layer 25 is combined with the body of the f-type 23 backlight module 22, Moreover, the manufacturing cost of the backlight module 22 is further reduced. [Please refer to FIG. 7 , which is the back panel of the backlight module of the present invention = (4) The main difference of the embodiment 23: the various parts of the second The shape is different from the shape of the back plate 23: 43 柃 柃 柃 抹 ^ ^ ^ ^ ^ ^ , , , , , , , , , , , Chengzhitong Kongcut 201024855 .5 is not inconsistent with the above-mentioned real financial formula, and its Ke has other design changes. The second hole 233 can also be a regular shape such as a triangle or an ellipse, or a combination of shapes and shapes. The bottom plate 231 f of the back plate 23 may include a through hole having more resources, such as a job, a second bank, a third bank, or a fifth. The through hole 233 of the back plate 23 may also be engraved. Other welding methods or assembly methods may be used for each part of the backing plate 23. The material of the plastic frame 24 and the reflective layer may also be white high reflectivity of polyparaphenylene (4) (4) yethyleneTe ring h fine, pET ), or other similar. Similarly, the above change design is also a backlight module of the second embodiment. In summary, the present invention has indeed met the requirements of the invention, and Mai filed a patent application. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, and the equivalent modification or change made by the person of the present age in accordance with the spirit of the present invention should be It is covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a prior art backlight module.胄 2 is an exploded perspective view of a first embodiment of the backlight module of the present invention. © ®3 Side 2 shows the three-dimensional structure of the back panel of the backlight module. Figure 4 is the backlight module shown in Figure 2! Schematic diagram of the y_IV section. FIG. 5 is an exploded perspective view of the back panel of the backlight module shown in FIG. 3. FIG. FIG. 6 is a schematic diagram of a combination of the backlight modules shown in FIG. 2. FIG. 7 is a schematic structural view of a second embodiment of a back sheet of a backlight module of the present invention. [Main component symbol description] 23 > 43 Backlight module 22 Back plate 11 201024855 • 'Poly frame 24 Reflective layer 25. Light guide plate 26 Diffuser 27 - Light source 28 Combination frame 29 Light-incident surface 261 Light-emitting surface 262 Base plate 231 Side wall 232 through holes 233, 433 inner bottom surface 234 inner surface 235 first L-shaped material 236 reference second L-shaped material 237 first side arm 238 second side arm 239 third side arm 240 fourth side arm 241 ❿ 12