1276391 九、發明說明： 【發明所屬之技術領域】 本發明疋有關於一種背光模組（back light module)，且特別是有關於一 種可有效將背光光源運作時所產生之高熱移除的背光模組之散熱結構。 【先前技掏 由於具有良好的發光效率與均勻性，且能夠提供大面積的面光源，因 此，平面燈板已逐漸被應用為背光模組之背光源。而平面燈板是一種電漿 發光元件，其主要是利用電極組間施以一高電壓差，將氣體放電腔體中陰 極與陽極之間的鈍氣激發成高能之氣體激態分子、離子與電子，這些高能 之氣體激態分子、離子與電子即為所謂之電漿。之後，電漿中被激發的激 態原子會以放射紫外線的方式將能量釋放出來，而所放射之紫外線會進一 步激發平面燈板中的螢光材料以發出可見光，而電極於燈板的分佈又可分 為外部電極與内部電極式。 請參閱「第1圖」，習知背光模組1〇係由一外部電極式平面燈板12、 一背蓋（rear frame) 14及一前蓋（front frame) 16所構成。其中前蓋丨6係 配置於背蓋14上，用以將平面燈板12固定於前蓋16與背蓋14之間，而 前蓋16上配置有一液晶面板2〇,此液晶面板20可利用背光模組1〇之平面 燈板12所提供之面光源，進而達到顯示的功能。背蓋14為具有冷卻平面 燈板12的功用的金屬板，但為不使電流漏至背蓋14影響其 電作用，平面燈板12與背蓋14間預留出一間隙18，由上述結構可知，'傳 統背光模組10内部空間的設計皆是完全密閉的。 由於傳統背光模組10内部空間為完全密閉，因此平面燈板12在工作 期間（即持續點燈下），其電極驅動所產生之高熱，會留在背光模組内 部，且當背光模組10配合液晶面板20使用時（即將背光模組1〇及液晶面 板20直立配置），背光模組1〇内部之熱空氣會自然地上昇，而聚集於=光 模組10的上半部，除了會造成平面燈板12上下溫差大影響發光效率1光 均勻性外，背光模組10上半部溫度較高更會影響液晶面板2〇所屬之圯 及控制電路板的作動效率。 1276391 【發明内容】 因此，本發曰月的目的在提供一種f光模、组之 光源所產生的熱源導出，以調節背光模_部的_ 的發光效率及光均自度。 柳n原权組 基於上述目的，本發明提出—種背光模組之散熱結構，主要在於 氣孔及多數個出氣孔，且相對於液晶面板在使驗態下， 出乳孔係位於進乳孔的上方，用以將光源所產生的熱源導出。 在本發明之較佳實施例中，背蓋更具有多數個承靠片，承靠片分別連 ===_邊緣，這種_可_鈑金=== 二r孔及出氣孔的同時，藉由保留與背蓋相連的金屬片加以實 、之日曰面板所連接之控制電路板係可承靠於承靠片上，以便於將控 電路板固定於背蓋上，並避免控制電路板直接接觸背蓋上的熱能。、工 施财’背蓋上更可配置—絲風扇，此散熱風扇 對應於出乱孔，用以提供強制的排氣散熱功能。 及夕ίίΐ月r父佳實施例中，背蓋上更可配置多數個導熱管（―㈣ =„片（fms)’且導熱管之—端係鄰近於*氣孔處，而導熱管 $細熱㈣組連接’導錄射將熱輯送至散熱，並利用 政熱鰭片將熱能散至外界。 在本發明之較佳實施例中，更包括多數個導熱管及 二2 於散熱風扇下方，導熱管係可將熱能傳送至散熱風扇之 下方，並姻散熱風扇提供強制的排氣散熱功能。 ⑽2述=本發明之背光模組主要透過在背蓋上開設進氣孔及出氣 使光源在工作期間所產生之熱氣可自舰由岐孔排出，且外 由職孔流入，而產生一熱對流的效應，進而將背光模組内部 問題了至夕界以改善傳統背光模組内部為完全密閉，而無法散熱的 【實施方式】 明多閱第2-1圖」及「第2_2圖」所示，本發明第一實施例之背光 1276391 模組100主要係由一平面燈板110、一背蓋120及一前蓋130所構成。其中 前蓋130配置於背蓋120上，用以將平面燈板110固定於前蓋130與背蓋 120之間。平面燈板11〇與背蓋120之間保留一間隙140,以確保電性作動。 而前蓋130上配置有一液晶面板200，此液晶面板200利用背光模組1〇〇之 平面燈板110所提供之面光源，進而達到顯示的功能。此外，平面燈板110 與液晶面板200間可配置一擴散板（DiffUser) 150，用以提高背光模組100 之光均勻度。另外，液晶面板200與擴散板150之間更可配置一至多個光 學膜片（optical film) 160，例如增光片（Prism)，用以增進背光模組100 整體的輝度表現。 背蓋120上具有多數個進氣孔122及多數個出氣孔124,且相對於液晶 面板200在使用狀態下（即將背光模組1〇〇及液晶面板2〇〇直立配置時）， 出氣孔124的位置係位於進氣孔122的上方，以本實施例而言，進氣孔122 與出氣孔124係開設於背蓋120的底壁126上。此外，平面燈板11〇分為 一發光部112及一電極部114，其中電極部114用以驅動發光部112發光， 電極部114係面向具有進氣孔122及出氣孔124之背蓋120設置以與外部 空氣直接接觸做熱交換作用，而發光部112用以將光源投射至液晶面板2〇〇 上，發光部112係面向液晶面板2〇〇設置並與外部空氣隔離。 由於本發明之背光模組100在背蓋12〇上開設進氣孔122及出氣孔 124，當平面燈板11〇在工作期間（即持續點燈下），其電極部114驅動所 產生之熱空氣，會由背光模組1〇〇之間隙14〇向上流動，並由背蓋12〇之 出氣孔124排出，且外界冷空氣可順勢由背蓋12〇之進氣孔122流入，而 形成一熱對流的效應。如此一來，利用此熱對流效應即可持續將平面燈板 11〇所產生的熱源導出’以調節背光模I且100内部的溫度，並使背光模組 100上半部與下半部的溫度相近，進而增進光源模、组1〇〇的發光效率以及光 均勻度。 此外，由於進氣孔122與出氣孔124並未與平面燈板11()及液晶面板 2〇〇之間的空間連通，因此並不會影響平面燈板之發光部m的潔淨度，而 可保持最佳輝度的表現。 清參閱「第3_1圖」及「第3_2圖」，本發明第二實施例其主要結構大 1276391 致與上述第-實關相同’其相同處在此即不再魏，而其不同處在於 蓋⑽上更具有多數個承靠片⑽，且承靠片咖分別連接於進氣孔⑵ 及出氣孔m的邊緣，而這些承靠片⑽例如是树壓進氣孔⑵及出氣 孔I24時-起形成，較詳細的說，這縣靠片_可以透過鈑 婦金屬背蓋丨2〇上形成進氣孔122及出氣孔124的同時，藉由保留 盍120相連的金屬片加以實現。承靠片12〇a可助於導引空氣進入進氣孔⑵ 内以及排出出氣孔以，本實施例中，係將設於進氣孔⑵之承靠 其-端連接於進氣孔122之上端，另—端則向下彎折形成—導流 設於出氣孔m之承靠片！施其一端連接於出氣孔124之下端，另 向上騎形成具有煙_效應之導流通道；而驅動液晶面板細或平面产板 110之電路板210係可承靠於部分承靠片12〇a上，而便於固定於背蓋^ 上。此外，由於電路板训承靠於承#片ma上，故電路板21㈣背蓋⑼ 間可保持-間距，靖免板12G直接接㈣蓋12G上的她，而旦壇 電路板120的作動效率。當然，由於背光模組1〇〇内部的高熱可被持& 出，因此液曰曰㈤板200所屬之IC板220、23〇 (即控制掃描配線（—^ 及貧料配線（Dataline)之1C板）亦可維持較佳的作動效率。 請參閱「第4_i圖」及「第4·2圖」，本發明第三實施例其主要 ，與上述第-實施例相同’其相同處在此即不再贅述，而其不同處:於北 盍120上更可配置-散熱風扇17〇，且散熱風扇17〇對應於出氣孔以，、: 以將背光模，100内部之高熱強制由出氣孔124抽出，以加快熱對流 應’進而提高散熱的效果。 請參閱「第5-1圖」及「第5-2圖」，本發明第四實施例其主要結 =與上述第-實施例相同，其相同處在此即不再贅述，而其不同處在於北 盍120上更可配置多數個導熱管（heatpipe)⑽及多數個散熱鰭片（如月 刚。其中導熱管⑽之-端係鄰近於出氣孔m處，而導熱管⑽ 端則與散熱鰭片組190連接並鄰近於進氣孔122設置。藉由導熱管以〇 工作液之液態、氣態的轉換，以將位於出氣孔124附近之熱能傳^至= 鰭片190上，並再利用散熱籍片、组19〇將熱能散至外界， 月…、 請參閱「第6-i圖」及「第6_2圖」，本發明第五實施例其大 1276391 ==*=：=^喻咖嫩，@袖處在背蓋 一又J直夕数個導熱官（heatplpe)i80及一散熱風扇17〇。其 之-端係鄰近於出氣孔124處，而導熱管⑽之另—端係對應於散 二下方。導熱管180係可將位於出氣孔124附近之熱能傳送至 界了虫羽之下方，並利用散熱風扇170的強制冷卻動作將熱能抽至外 ^從上述實_可知，本發日狀t光模組主魏過树蓋上開設進氣 孔及出祕的手段，使光源在工作_所產生之減可自舰由出氣 出，且外界冷空氣可由進氣孔流人，而產生—熱對流的效應，進而將背光 模組内部之高熱引導至外界，以達到散熱的效果。然而，實施例中之進氣 孔，出氣孔係以開設於背蓋之底雜例說明。當然，熟悉該項技術者應知， 進氣，及出氣孔並不舰開設於背蓋之底壁，亦可開設於背蓋之侧壁，並 將^氣孔"又冲於進氣孔之上方’卩自然產生熱對流效應即可。此外，更可 在为蓋上配置散熱風扇，或轉熱管配合散麟H或轉熱管配人散 熱風扇的H明進雜的效果。另外，本侧之實_^以平S 板作為背光光源舉舰明，#然，熟悉該項觀者應知，本發明之背光光 源的型態無須_。舉凡背光光源可與外部空氣產生直接對流作用者 本發明所欲闡述之特點。 表下上所述，本發明背光模組之散熱結構至少包括下列優點： 1·可持續將背光光源所產生的熱源導出，以調節背光模組内部的溫度， 進而增進光源模組的發光效率以及光均勻度。 又 、、2·由於背光光源所產生的熱源可直接與外部空氣產生對流效應而持續 被導出，液晶面板所屬之K：板及控制電路板可維持較佳的作動效率。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明，任 何熟習此技藝者，在不脫離本發明之精神和範圍内，當可作些許之更動與 潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。一 9 1276391 【圖式簡單說明】 第1圖，係為習知-種背光模組的構造斷面圖。 圖，係為依照本發縣—實施例崎示之背光模組的構造斷面圖。 第2-2圖，係為依照本發明第_實_所緣示之背光模組的後視圖。 第3_1圖，係為依照本發明第二實補騎示之背紐_構造斷面圖。 第3-2圖，係為依照本發明第二實施例所繪示之背光模_後視圖。 第4-1圖’係為依照本發明第三實施例所繪示之背光模組的構造斷面圖。 2圖’係為依照本發明第三實施例所繪示之背光模組的後視圖。 ，5-1圖’係為依照本發明第四實施例所繪示之背光模組的構造斷面圖。 第5-2圖，係為依照本發明第四實施例所繪示之背光模組的後視圖。 第6-1圖，係為依照本發明第五實施例所繪示之背光模組的構造斷面圖。 第6-2圖，係為依照本發明第五實施例所繪示之背光模組的後視圖。 【主要元件符號說明】 10.......背光模組 12.......平面燈板 14.......背蓋 !6.......前蓋 18.......間隙 20.......液晶面板 1〇〇.......背光模組 110.......平面燈板 112.......發光部 114.......電極部 120.......背蓋 !2〇a.......承靠片 122.......進氣孔 •出氣孔 •底壁 •前蓋 124 · 126 · 130 · 1276391 140.......間隙 150.......擴散板 160.......光學膜片 170.......散熱風扇 180.......導熱管 190.......散熱鰭片組 200 .......液晶面板 210.......電路板 220 ....... 1C 板 230 ....... 1C 板1276391 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, and more particularly to a backlight module capable of effectively removing high heat generated when a backlight source operates. The heat dissipation structure of the group. [Previous technology] Because of its good luminous efficiency and uniformity, and the ability to provide a large-area surface light source, flat panel panels have gradually been applied as backlights for backlight modules. The flat panel is a plasma illuminating component, which mainly uses a high voltage difference between the electrode groups to excite the blunt gas between the cathode and the anode in the gas discharge chamber into high-energy gas excited molecules, ions and Electrons, these high-energy gas excited molecules, ions and electrons are called plasma. After that, the excited excited atoms in the plasma will release the energy by emitting ultraviolet rays, and the emitted ultraviolet rays will further excite the fluorescent material in the flat panel to emit visible light, and the distribution of the electrodes on the panel Can be divided into external electrodes and internal electrodes. Please refer to FIG. 1 . The conventional backlight module 1 is composed of an external electrode type planar light board 12, a rear frame 14 and a front frame 16. The front cover 6 is disposed on the back cover 14 for fixing the flat light board 12 between the front cover 16 and the back cover 14. The front cover 16 is provided with a liquid crystal panel 2, and the liquid crystal panel 20 can be utilized. The surface light source provided by the planar light board 12 of the backlight module 1 further realizes the display function. The back cover 14 is a metal plate having the function of cooling the planar light board 12, but a gap 18 is reserved between the flat light board 12 and the back cover 14 so as not to cause current leakage to the back cover 14 to affect its electrical action. It can be seen that the design of the internal space of the conventional backlight module 10 is completely sealed. Since the internal space of the conventional backlight module 10 is completely sealed, the high heat generated by the electrode driving during the operation of the planar light panel 12 (ie, under continuous lighting) will remain inside the backlight module, and the backlight module 10 When the liquid crystal panel 20 is used (that is, the backlight module 1 and the liquid crystal panel 20 are arranged upright), the hot air inside the backlight module 1 will naturally rise and gather in the upper half of the optical module 10, except for In addition, the temperature difference between the upper and lower surfaces of the flat panel 12 greatly affects the luminous efficiency. 1 The uniformity of the upper half of the backlight module 10 affects the operating efficiency of the liquid crystal panel 2 and the control circuit board. 1276391 SUMMARY OF THE INVENTION Therefore, the purpose of the present invention is to provide a heat source generated by a f-mode and a group of light sources to adjust the luminous efficiency and the light self-degree of the backlight mode. Based on the above purpose, the present invention proposes a heat dissipation structure of a backlight module, mainly in the air hole and a plurality of air outlet holes, and in the inspection state with respect to the liquid crystal panel, the milk outlet hole is located in the milk inlet hole. Above, to derive the heat source generated by the light source. In a preferred embodiment of the present invention, the back cover further has a plurality of bearing pieces, and the bearing pieces are respectively connected with the ===_ edge, and the _ _ _ _ gold === two r holes and the vent holes simultaneously The control circuit board connected to the back panel by the metal piece retained by the back cover can be supported on the bearing piece, so as to fix the control circuit board on the back cover and avoid direct contact of the control circuit board. Thermal energy on the back cover. The workmanship is more configurable on the back cover—the wire fan, which corresponds to the chaotic hole to provide forced exhaust heat dissipation. In the embodiment of the eve, the back cover can be configured with a plurality of heat pipes (“(4) = „chips (fms)” and the ends of the heat pipes are adjacent to the * vents, and the heat pipes are fine (4) The group connection 'guide shots send the heat to the heat dissipation, and the heat fins are used to dissipate the heat energy to the outside. In the preferred embodiment of the present invention, a plurality of heat pipes and 2 are disposed under the heat dissipation fan. The heat pipe system can transfer the heat energy to the lower side of the heat dissipation fan, and the heat dissipation fan provides a forced exhaust heat dissipation function. (10) 2 = The backlight module of the present invention mainly enables the light source to work by opening the air inlet hole and the air outlet on the back cover. The heat generated during the period can be discharged from the ship by the borehole, and the external hole flows in, which generates a heat convection effect, and then the internal problem of the backlight module is improved to improve the interior of the conventional backlight module to be completely sealed. The backlight of the first embodiment of the present invention is mainly composed of a flat light board 110 and a back cover 120, as shown in FIG. 2-1 and FIG. 2-2. And a front cover 130. The front cover The 130 is disposed on the back cover 120 for fixing the flat light board 110 between the front cover 130 and the back cover 120. A gap 140 is reserved between the flat light board 11A and the back cover 120 to ensure electrical operation. The front cover 130 is provided with a liquid crystal panel 200, which uses the surface light source provided by the planar light board 110 of the backlight module 1 to achieve the display function. In addition, the flat light board 110 and the liquid crystal panel 200 can be A diffusion plate (DiffUser) 150 is disposed to improve the light uniformity of the backlight module 100. In addition, one or more optical films 160, such as a brightness enhancement film, may be disposed between the liquid crystal panel 200 and the diffusion plate 150. (Prism), for improving the brightness performance of the backlight module 100. The back cover 120 has a plurality of air inlet holes 122 and a plurality of air outlet holes 124, and is in use with respect to the liquid crystal panel 200 (ie, the backlight module 1) When the liquid crystal panel is disposed in an upright position, the position of the air outlet 124 is located above the air inlet hole 122. In the embodiment, the air inlet hole 122 and the air outlet hole 124 are formed at the bottom of the back cover 120. On the wall 126. In addition, the flat panel 11 The light emitting portion 112 is configured to drive the light emitting portion 112 to emit light, and the electrode portion 114 is disposed facing the back cover 120 having the air inlet hole 122 and the air outlet hole 124 to directly contact the outside air. The backlight unit 100 is disposed on the liquid crystal panel 2A and is isolated from the outside air. The backlight module 100 of the present invention is on the back cover 12. The air inlet 122 and the air outlet 124 are opened on the raft. When the flat panel 11 is in operation (ie, under continuous lighting), the electrode portion 114 drives the generated hot air, which is separated by the backlight module 1 14〇 flows upward and is discharged by the air outlet 124 of the back cover 12, and the outside cold air can flow in from the air inlet hole 122 of the back cover 12 to form a heat convection effect. In this way, the heat convection effect is utilized to continuously derive the heat source generated by the planar light panel 11〇 to adjust the temperature inside the backlight modules I and 100, and to make the temperature of the upper half and the lower half of the backlight module 100. Similar to each other, the luminous efficiency and light uniformity of the light source mode and the group 1〇〇 are improved. In addition, since the air inlet hole 122 and the air outlet hole 124 are not in communication with the space between the flat panel 11 () and the liquid crystal panel 2, the cleanliness of the light-emitting portion m of the flat panel is not affected. Maintain the best brightness performance. Referring to "3_1" and "3-2", the second embodiment of the present invention has a main structure of 1,276,391 which is the same as the above-mentioned - the same - 'the same place is no longer Wei, and the difference lies in the cover (10) There are a plurality of bearing pieces (10), and the supporting cups are respectively connected to the edges of the air inlet holes (2) and the air outlet holes m, and the bearing plates (10) are, for example, a tree pressure air inlet hole (2) and an air outlet hole I24- In more detail, the county sheet can be realized by forming a gas hole 122 and an air outlet 124 through the wife's metal back cover ,2, while retaining the metal piece connected to the 盍120. The bearing piece 12〇a can guide the air into the air inlet hole (2) and the air outlet hole. In this embodiment, the air inlet hole (2) is connected to the air inlet hole 122 at its end. At the upper end, the other end is bent downward to form a guide piece which is arranged at the outlet of the air outlet m! One end is connected to the lower end of the air outlet 124, and the other rides up to form a flow path having a smoke-effect; and the circuit board 210 that drives the thin or flat production board 110 of the liquid crystal panel can bear against the partial bearing 12a Upper, and easy to fix on the back cover ^. In addition, since the circuit board training is supported by the bearing piece ma, the circuit board 21 (four) back cover (9) can maintain the - spacing, the Jing Free board 12G directly connects (4) the cover 12G, and the operation efficiency of the circuit board 120 . Of course, since the high heat inside the backlight module 1 can be held & the IC board 220, 23 of the liquid helium (five) board 200 belongs to (ie, the control wiring (-^ and the poor wiring (Dataline)) 1C board) can also maintain better efficiency of operation. Please refer to "4_i" and "4.2", the third embodiment of the present invention is mainly the same as the above-mentioned embodiment - the same is here That is, it will not be described again, but the difference is: it is more configurable on the Beibei 120 - the cooling fan is 17 〇, and the cooling fan 17 〇 corresponds to the air outlet, and: to force the high heat of the backlight mold, 100 inside, to the air outlet 124 is taken out to speed up the heat convection to further improve the heat dissipation effect. Please refer to "FIG. 5-1" and "5-2", the main embodiment of the fourth embodiment of the present invention is the same as the above-mentioned first embodiment The same is not repeated here, and the difference is that the north pole 120 can be configured with a plurality of heat pipes (10) and a plurality of heat-dissipating fins (such as the moon. The heat pipe (10) is adjacent to the end. At the air outlet m, the heat pipe (10) is connected to the heat sink fin group 190 and adjacent to the air intake The hole 122 is disposed. The heat transfer is performed by the heat transfer tube to transfer the heat energy in the vicinity of the air outlet 124 to the fin 190, and then the heat dissipation film and the group 19 are used to dissipate the heat energy. To the outside world, month..., please refer to "6-i" and "6-2". In the fifth embodiment of the present invention, the large 1478391 ==*=:=^ Yu Gan, @袖在背盖一 again J is a number of heat-transfers (heatplpe) i80 and a cooling fan 17〇. The end of the heat pipe (10) is adjacent to the air outlet 124, and the other end of the heat pipe (10) corresponds to the lower side of the heat pipe 180. The heat energy located near the air outlet 124 is transmitted to the lower side of the insect feather, and the heat is extracted by the forced cooling action of the heat dissipation fan 170. From the above, the current day-shaped t-light module main Wei Chushu The cover is provided with a means for opening the air inlet and the secret, so that the light source generated in the work can be discharged from the ship, and the outside cold air can flow from the air inlet hole to generate the effect of heat convection, and then the backlight The high heat inside the module is guided to the outside to achieve the effect of heat dissipation. However, the air intake hole in the embodiment The venting holes are described in the example of the bottom of the back cover. Of course, those familiar with the technology should know that the air intake and the air venting holes are not built on the bottom wall of the back cover, but also on the side wall of the back cover. And ^ vents " rushed above the air intake hole '卩 naturally produce a heat convection effect. In addition, you can also configure a cooling fan for the cover, or a heat transfer tube with a loose Lin H or a heat transfer tube for cooling The effect of the fan H is mixed. In addition, the actual side of the fan _^ uses the flat S plate as the backlight source to lift the ship, #然, familiar with the viewer, the type of the backlight source of the present invention does not need to be _. Any feature that the backlight source can directly convect with the outside air is described in the present invention. As shown in the following table, the heat dissipation structure of the backlight module of the present invention includes at least the following advantages: 1. The heat source generated by the backlight source can be continuously exported to adjust the temperature inside the backlight module, thereby improving the luminous efficiency of the light source module and Light uniformity. Moreover, 2) Since the heat source generated by the backlight source can be directly derived from the convection effect of the outside air, the K: board and the control circuit board to which the liquid crystal panel belongs can maintain better operation efficiency. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. A 9 1276391 [Simple description of the drawing] Fig. 1 is a structural sectional view of a conventional backlight module. The figure is a structural sectional view of a backlight module according to the present invention. 2-2 is a rear view of the backlight module according to the present invention. Figure 3_1 is a cross-sectional view of the back of the second embodiment of the present invention. 3-2 is a backlight mode_back view of the second embodiment of the present invention. Figure 4-1 is a cross-sectional view showing the structure of a backlight module according to a third embodiment of the present invention. 2 is a rear view of a backlight module according to a third embodiment of the present invention. 5-1 is a structural sectional view of a backlight module according to a fourth embodiment of the present invention. FIG. 5-2 is a rear view of the backlight module according to the fourth embodiment of the present invention. Figure 6-1 is a cross-sectional view showing the structure of a backlight module according to a fifth embodiment of the present invention. FIG. 6-2 is a rear view of the backlight module according to the fifth embodiment of the present invention. [Description of main component symbols] 10.......Backlight module 12.. Flat panel 14.. Back cover! 6.. Front cover 18 ....... gap 20.......LCD panel 1〇〇.......backlight module 110.......plane light board 112....... Light-emitting portion 114.......electrode portion 120.......back cover! 2〇a....... bearing plate 122....... intake hole/vent hole • Bottom wall • Front cover 124 · 126 · 130 · 1276391 140....... Clearance 150.......Diffuser plate 160.......Optical diaphragm 170... Cooling fan 180.. heat pipe 190....... heat sink fin set 200....... liquid crystal panel 210....... circuit board 220 .... ... 1C board 230 ....... 1C board