M355387 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種側光式背光模組以及一種液晶顯示 器裝置。 【先前技術】M355387 VIII. New Description: [New Technology Field] This creation is about an edge-lit backlight module and a liquid crystal display device. [Prior Art]
10 15 20 液晶顯示器（LCD)是一種非自發光顯示器，因此必須藉 由一背光模組提供其所需之光源。一般筆記型電腦及桌上 型液晶螢幕較常採用側光式背光模組（side_light backlight module)，主要原因為側光式背光模組具有較薄的厚度。 叙常用的側光式背光模組是由導光板、冷陰極管' 反射燈罩以及光學膜片等元件所構成。背光模組之亮度主 要取決於冷陰極管的亮度。冷陰極管裝設於導光板之入光 面，冷陰極管旁設置有反射燈罩。反射燈罩環繞冷陰極管， 使冷陰極管所發出之光線向導光板之入光面反射，藉此有 效利用冷陰極管所發出之光線。 :般冷陰極管内填充有惰性氣體以及汞蒸汽，藉由冷 陰極管兩端的電極提供高電壓，激發汞分子發射出紫外 光另外，冷陰極管之管壁上塗佈有螢光體，螢光體吸收 紫外光而發射出可見光。 井πΓΓ:管在發光的過程中會產生熱量，熱量累積於背 古s使得背光模組的溫度升高。f光模組的溫度升 =了引，導光板之變形，從而影響光人射之角度，降低 ’曰曰顯不态之顯示品質，並縮短背光模組之使用壽命。另 5 M355387 方面，冷陰極管的發光效率也受到溫度的影響^當溫度 升高時，冷陰極管的亮度及發光效率均會下降，導致液2 顯示器亮度也隨之降低，也因此造成整體背光模組的亮度 下降。所以目前亟需-種能夠改善上述問題的背光模組及 5 液晶顯示器裝置。 【新型内容】 、本創作之主要目的係在提供一種背光模組，俾能提高 背光模組之散熱效果，有效避免背光模組之溫度上升，均 10勻化背光模組内光源之溫度分度。 本創作之另一目的係在提供一種背光模組，俾能提高 背光模組之亮度。 本創作之再一目的係在提供一種液晶顯示器裝置，俾 能提高液晶顯示器裝置之亮度以及提升液晶顯示器裝置之 15 散熱效果。 為達成上述目的，本創作之背光模組包括有一膠框， 具有一第一開口；一反射罩，設置於該膠框上，其中反射 罩具有至少一散熱孔；以及一燈管，具有至少一電極端， 且燈管設置於反射罩中；其中，第一開口、散熱孔與電極 20 端對應設置。 本創作之液晶顯示器裝置包括有一背光模組、一液晶 面板以及具有一第二開口之框體，液晶面板組設於背光 模組上，且框體覆蓋背光模組及液晶面板之周邊；上述之 背光模組包括有一膠框，具有一第一開口；一反射罩，設 M355387 置於該膠框上，其中反射罩具有至少一散熱孔；一燈管， 具有至少一電極端，且燈管設置於反射罩中；以及一導光 板，設置於燈管之一側；其中，第一開口、散熱孔與電極 端對應設置。 本創作之液晶顯示器裝置可更包括有一擴散膜，組設 於導光板之出光面上。 本創作之液晶顯示器裝置可更包括有一棱鏡月，組設 於導光板之出光面上。10 15 20 Liquid crystal display (LCD) is a non-self-illuminating display, so a backlight module must be used to provide its desired light source. The general-purpose notebook computer and the desktop LCD screen often use a side-light backlight module. The main reason is that the edge-lit backlight module has a thin thickness. The commonly used edge-lit backlight module is composed of a light guide plate, a cold cathode tube 'reflective lamp cover, and an optical film. The brightness of the backlight module is mainly determined by the brightness of the cold cathode tube. The cold cathode tube is mounted on the light incident surface of the light guide plate, and a reflector lamp cover is disposed beside the cold cathode tube. The reflector cover surrounds the cold cathode tube, so that the light emitted by the cold cathode tube is reflected by the light incident surface of the light plate, thereby effectively utilizing the light emitted by the cold cathode tube. The cold cathode tube is filled with an inert gas and mercury vapor, and a high voltage is supplied from the electrodes at both ends of the cold cathode tube to excite the mercury molecules to emit ultraviolet light. In addition, the tube of the cold cathode tube is coated with a phosphor, and the fluorescent light is irradiated. The body absorbs ultraviolet light and emits visible light. Well πΓΓ: The tube generates heat during the process of illuminating, and the heat accumulates in the back s to increase the temperature of the backlight module. The temperature rise of the f-light module = the deformation of the light guide plate, which affects the angle of the light person, reduces the display quality of the display, and shortens the service life of the backlight module. In the other 5 M355387, the luminous efficiency of the cold cathode tube is also affected by the temperature. When the temperature rises, the brightness and luminous efficiency of the cold cathode tube will decrease, resulting in a decrease in the brightness of the liquid 2 display, thereby causing the overall backlight. The brightness of the module is reduced. Therefore, there is a need for a backlight module and a liquid crystal display device capable of improving the above problems. [New content] The main purpose of this creation is to provide a backlight module, which can improve the heat dissipation effect of the backlight module, effectively avoiding the temperature rise of the backlight module, and uniformly homogenizing the temperature index of the light source in the backlight module. . Another object of the present invention is to provide a backlight module that can improve the brightness of the backlight module. A further object of the present invention is to provide a liquid crystal display device which can improve the brightness of the liquid crystal display device and enhance the heat dissipation effect of the liquid crystal display device. In order to achieve the above object, the backlight module of the present invention comprises a plastic frame having a first opening; a reflective cover disposed on the plastic frame, wherein the reflective cover has at least one heat dissipation hole; and a light tube having at least one The electrode end is disposed in the reflector; wherein the first opening and the heat dissipation hole are disposed corresponding to the end of the electrode 20. The liquid crystal display device of the present invention comprises a backlight module, a liquid crystal panel and a frame having a second opening. The liquid crystal panel is disposed on the backlight module, and the frame covers the periphery of the backlight module and the liquid crystal panel; The backlight module includes a plastic frame having a first opening; a reflective cover, wherein the M355387 is disposed on the plastic frame, wherein the reflective cover has at least one heat dissipation hole; and a light tube has at least one electrode end, and the light tube is disposed And a light guide plate disposed on one side of the light tube; wherein the first opening and the heat dissipation hole are disposed corresponding to the electrode end. The liquid crystal display device of the present invention may further comprise a diffusion film disposed on the light-emitting surface of the light guide plate. The liquid crystal display device of the present invention may further comprise a prismatic moon, which is disposed on the light emitting surface of the light guide plate.
10 本創作之背光模組及液晶顯示.器裝置可更包括有一支 撐環，用以支撐此燈管。本創作背光模組之支撐環較佳可 具有一狹縫，更佳為此狹縫對應配置於反射罩之散熱孔。 本創作之背光模組及液晶顯示器裝置，其中此散熱孔 之形狀並無限制，較佳可為—矩型散熱孔、—圓形散熱孔 或一橢圓形散熱孔。 ’' 15 本創作之背光模組及液晶The backlight module and the liquid crystal display device of the present invention may further include a support ring for supporting the lamp. Preferably, the support ring of the backlight module has a slit, and the slit is disposed corresponding to the heat dissipation hole of the reflector. In the backlight module and the liquid crystal display device of the present invention, the shape of the heat dissipation hole is not limited, and may be a rectangular heat dissipation hole, a circular heat dissipation hole or an elliptical heat dissipation hole. ’' 15 backlight module and LCD
20 開口之形狀並無限制’較佳可為矩型、圓形 或橢圓形。 較佳背光模組及液晶顯示器裝置，其中此反射罩 =了包括有至少-散熱片，且此散熱片組設於此散熱孔 α >τϋ20 The shape of the opening is not limited' It is preferably a rectangular shape, a circular shape or an elliptical shape. Preferably, the backlight module and the liquid crystal display device, wherein the reflector includes at least a heat sink, and the heat sink is disposed on the heat dissipation hole α >τϋ
顯示器裝置，其中此至少 可為—矩形散熱片或一L 一玉如上所述之背光模組及液晶 放熱片之形狀並無限制，較佳 形散熱片。 示器裝置，其中此至少 如上所述之背光模組及液晶顯 7 M355387 一散熱片可為傾斜配置於反射罩上。 本創作之液晶顯示器裝置，其中此框體之第二開口之 形狀並無限制，較佳可為矩型、圓形、多邊形或橢圓形。 5【實施方式】 實施例1 本實施例之液晶顯示器裝置，請參見圖1、圖2及圖3。 在本實施例中，液晶顯示器裝置1〇包括有一液晶面板5〇〇、 一框體700以及一背光模組8〇〇。本實施例之液晶面板5〇〇組 1〇设於背光模組800上。框體700組設於液晶面板500的周邊 上，並藉由框體700將液晶面板5〇〇與背光模組8〇〇結合固 定。 本實施例背光模組800包括有一導光板1〇〇、一反射罩 200、一燈管300以及一膠框40(^在本實施例中，燈管3〇〇 15為一冷陰極管。導光板忉〇具有一入光面11〇以及一出光面 120。燈管300組設於導光板1〇〇的入光面11〇,反射罩2〇〇圍 繞燈管300與導光板1〇〇的入光面11〇。反射罩2〇〇可與反射 板一體成型或分開，本實施例中反射罩2〇〇與反射板一體成 型。因此，本實施例中反射罩2〇〇可以使燈管3〇〇所發射出 2〇之光線向導光板100的入光面11〇反射，而提高光線的利用 率。進入導光板100入光面110的光線，在導光板内部進行 全反射傳遞到導光板100其他部位，並且經由適當的光學路 徑從出光面120發射出來。利用導光板1〇〇將燈管3〇〇所發射 出的光線轉變為一平面光源。 8 M355387 導光板100的出光面120上方可以選擇性的配置有下擴 散膜610、第一稜鏡片622、第二稜鏡片620以及上擴散膜612 等光學膜片，液晶面板500配置該些光學膜片上方。上擴散 膜612及下擴散膜610可以使導光板1〇〇所發出之光線均勻 5化，而第一稜鏡片622及第二稜鏡片620可使光線集中於垂 直出光面的方向上，藉以提高整體液晶顯示器裝置的亮度。 燈管300的兩端分別組設有電極310，電極3 1 〇連接於高 壓電源，藉由兩端電極3 10提供高電壓差，激發燈管内之采 分子而發射出紫外光。同時燈管300之管壁上塗佈有螢光 10體’螢光體吸收紫外光而發射出可見光。在燈管3〇〇發光的 過程中’電極310會產生大量的熱而使得電極的溫度迅速升 高’接著整個燈管300的溫度也隨之升高。然而，當溫度升 高時’會導致燈管300的亮度下降以及發光效率降低。並且 通常在電極310位置附近的溫度最高。 15 反射罩2〇〇環繞於燈管300,因此反射罩2〇〇的溫度也會 隨著燈管300溫度升高而升高，並且反射罩200在電極31〇附 近的位置之溫度也會高於反射罩200的其他部位。在本實施 例中，反射罩200在相對應於電極310的位置上形成有兩個 散熱孔210 ’使得反射罩200内的高溫空氣可以發生熱對 20流’並經由散熱孔21〇向外傳導。並且在散熱孔210的周緣 上形成有兩個向外延伸的矩形散熱片220，矩形散熱片22〇 傾斜配置於反射罩200上，並且適度遮蔽散熱孔21〇，以避 免異物進入反射罩200内部以及減少光線由散熱孔21〇處漏 光。同時矩形散熱片220傾斜的配置方式並不會阻礙熱對流 9 M355387 見象此外’矩形散熱片22〇可以增加反射罩本體的散 熱面積，進一步提升熱傳導效果。 燈s 300兩鳊分別連接有支撐環9〇〇 ,用以固定燈管 3〇〇支撑％900的内控約略等於燈管扇的外徑，使得燈管 5 300之兩端嵌設支擇環刚中。支撑環_上形成有狹缝 910狹縫910的位置是相對應於反射罩2〇〇上散熱孔21〇的 位置。使付電極310所產生的熱可以經由狹縫91〇及散熱孔 210向外傳導。 膠框400用以容設及固定導光板1〇〇、反射罩2〇〇、燈管 10 300及支撐％900，膠框4〇〇相對應於散熱孔21〇的位置上形 成第-開口410 ’並且第一開口 41〇之面積足夠容納散熱孔 210與矩形散熱片220,使得燈管電極31〇所產生的熱可以經 由第一開口 410向外傳導。 框體700組設於膠框4〇〇的外緣，並且覆蓋液晶面板5〇〇 15的周邊，藉由框體700將液晶面板與背光模組夾置固定在一 起。在框體700對應於膠框4〇〇之第一開口 41〇的位置上形成 第二開口 710。在本實施例中，第二開口 71〇之大小約與第 一開口410相同，使得電極31〇所產生的熱可以經由第二開 口 710向外傳導。 20 更具體的說，本實施例是利用自然熱對流的現象，將 電極310所產生的熱量經由反射罩2〇〇上的散熱孔21〇、膠框 400上的第一開口410以及框體700上的第二開口71〇向外傳 導，達到降低電極310附近溫度的效果。反射罩2〇〇上的矩 形散熱片220增加反射罩的散熱面積，可以更進一步提高散 M355387 熱效果。本實施例之設計方式，一方面可以降低燈管3〇〇及 老光模組的溫度。另一方面，藉由降低燈管3〇〇之溫度而提 升燈管300之溫度與發光效率，進而提高整體液晶顯示器裝 置之亮度。 5 實施例2 ^ 圖4為本實施例之局部立體圖。在本實施例中，除了散 熱片之設計與實施例1不同外，其他構成組件與實施例^目 同。 在本實施例中，反射罩200相對應於電極310的位置上 10形成有一的散熱孔210。反射罩200内的高溫空氣利用自然 熱對流現象，經由反射罩200上的散熱孔210、膠框4〇〇上的 第一開口410以及框體700上的第二開口71〇向外傳導，達到 降低電極310附近溫度的效果。 在散熱孔210的上緣形成有一個向外延伸的l形散熱片 222 L形放熱片222之一端適度遮蔽散熱孔21〇，避免異物 進入反射罩200内部以及減少光線由散熱孔21〇處漏光。另 方面，L形政熱片222增加反射罩200本體的散熱面積，進 一步提升熱傳導效果。本實施例之設計方式，一方面可以 降低燈管300及背光模組的溫度。另一方面，藉由降低燈管 2〇 300之溫度而提升燈管3〇〇之溫度與發光效率，進而提高整 體液晶顯示器裝置之亮度。 上述實施例僅係為了方便說明而舉例而已，本創作所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 11 25 M355387 【圖式簡單說明】 圖1係本創作實施例1之示意圖。 圖2係本創作實施例1之局部立體圖 圖3係本創作實施例1之分解圖。 圖4係本創作實施例2之局部剖面圖 【主要元件符號說明】 10液晶顯示器裝置 100導光板 110導光板入光面 120導光板出光面 200反射罩 210散熱孔 220矩形散熱片 222 L形散熱片 300燈管 310電極 400膠框 410 500 610 612 620 622 700 710 800 900 910 第一開口 液晶面板 下擴散膜 上擴散臈 第二稜鏡片 第一稜鏡片 框體 第二開口 背光模組 支撐環 狹縫 12The display device, wherein the shape of the backlight module and the liquid crystal heat release sheet as described above is at least a rectangular heat sink or a L-shaped jade, is not limited, and is preferably a heat sink. The display device, wherein at least the backlight module and the liquid crystal display 7 M355387 one heat sink can be obliquely disposed on the reflective cover. In the liquid crystal display device of the present invention, the shape of the second opening of the frame is not limited, and may be a rectangular shape, a circular shape, a polygonal shape or an elliptical shape. 5 [Embodiment] Embodiment 1 Referring to Figures 1, 2 and 3 of the liquid crystal display device of this embodiment. In this embodiment, the liquid crystal display device 1A includes a liquid crystal panel 5A, a frame 700, and a backlight module 8A. The liquid crystal panel 5 of the present embodiment is disposed on the backlight module 800. The frame 700 is disposed on the periphery of the liquid crystal panel 500, and the liquid crystal panel 5 is coupled to the backlight module 8A by the frame 700. The backlight module 800 of the embodiment includes a light guide plate 1 , a reflector cover 200 , a lamp tube 300 , and a plastic frame 40 . In the embodiment, the lamp tube 3 〇〇 15 is a cold cathode tube. The light plate 忉〇 has a light incident surface 11 〇 and a light exit surface 120. The light tube 300 is disposed on the light incident surface 11 导 of the light guide plate 1 , and the reflective cover 2 〇〇 surrounds the light tube 300 and the light guide plate 1 The reflective cover 2〇〇 can be integrally formed or separated from the reflective plate. In the embodiment, the reflective cover 2〇〇 is integrally formed with the reflective plate. Therefore, in the embodiment, the reflective cover 2 can make the light tube The light emitted by the 3〇〇 light is reflected by the light incident surface 11 of the light guide plate 100 to improve the utilization of the light. The light entering the light incident surface of the light guide plate 100 is totally reflected inside the light guide plate and transmitted to the light guide plate. 100 other parts, and emitted from the light-emitting surface 120 via a suitable optical path. The light emitted by the tube 3〇〇 is converted into a planar light source by the light guide plate 1〇〇. 8 M355387 Above the light-emitting surface 120 of the light guide plate 100 The lower diffusion film 610 and the first dam 622 may be selectively disposed. The optical film such as the second slab 620 and the upper diffusion film 612 is disposed above the optical film. The upper diffusion film 612 and the lower diffusion film 610 can uniformly illuminate the light emitted by the light guide plate 1 . The first cymbal 622 and the second cymbal 620 can concentrate the light in the direction of the vertical illuminating surface, thereby improving the brightness of the overall liquid crystal display device. The two ends of the tube 300 are respectively provided with an electrode 310, and the electrode 3 1 〇 Connected to the high voltage power supply, the high voltage difference is provided by the two ends of the electrode 3 10 to excite the molecules in the lamp tube to emit ultraviolet light. At the same time, the tube wall of the lamp tube 300 is coated with a fluorescent 10 body 'fluorescent body absorption. Ultraviolet light emits visible light. During the illumination of the lamp tube 3, the electrode 310 generates a large amount of heat and the temperature of the electrode rises rapidly. Then the temperature of the entire lamp tube 300 also rises. When the temperature rises, 'the brightness of the bulb 300 is lowered and the luminous efficiency is lowered. And the temperature is usually highest near the position of the electrode 310. 15 The reflector 2 is surrounded by the bulb 300, so the temperature of the reflector 2 is also meeting As the temperature of the lamp tube 300 rises, the temperature of the position of the reflector 200 near the electrode 31 is also higher than other portions of the reflector 200. In the present embodiment, the reflector 200 corresponds to the electrode. Two heat dissipation holes 210 ′ are formed in the position of the 310 so that the high temperature air in the reflection cover 200 can generate a heat to 20 flow 'and conduct outward through the heat dissipation holes 21 。. And two directions are formed on the circumference of the heat dissipation hole 210 The rectangular fins 220 and the rectangular fins 22 are disposed on the reflector 200 obliquely, and the heat dissipation holes 21 are appropriately shielded to prevent foreign matter from entering the inside of the reflector 200 and reducing light leakage from the heat dissipation holes 21 . At the same time, the arrangement of the rectangular fins 220 is inclined so as not to hinder the heat convection. 9 M355387 See also the 'rectangular fins 22' can increase the heat dissipation area of the reflector body to further enhance the heat conduction effect. The lamp s 300 is respectively connected with a support ring 9 〇〇 for fixing the lamp 3 〇〇 support % 900 internal control is approximately equal to the outer diameter of the lamp fan, so that the ends of the lamp 5 300 are embedded with the ring in. The slit 910 is formed on the support ring _ at a position corresponding to the position of the heat dissipation hole 21 反射 on the reflector 2 . The heat generated by the pay electrode 310 can be conducted outward through the slit 91 and the heat dissipation hole 210. The plastic frame 400 is configured to receive and fix the light guide plate 1 , the reflector 2 , the tube 10 300 and the support % 900 , and the frame 4 defines a first opening 410 corresponding to the position of the heat dissipation hole 21 . And the area of the first opening 41 is sufficient to accommodate the heat dissipation hole 210 and the rectangular heat sink 220, so that heat generated by the lamp electrode 31A can be conducted outward through the first opening 410. The frame 700 is disposed on the outer edge of the plastic frame 4A and covers the periphery of the liquid crystal panel 5〇〇15. The liquid crystal panel and the backlight module are sandwiched and fixed by the frame 700. A second opening 710 is formed at a position corresponding to the first opening 41 of the frame 4 of the frame 700. In the present embodiment, the second opening 71 is approximately the same size as the first opening 410, so that heat generated by the electrode 31A can be conducted outward through the second opening 710. 20 More specifically, this embodiment utilizes the phenomenon of natural heat convection, and the heat generated by the electrode 310 is transmitted through the heat dissipation hole 21 of the reflector 2, the first opening 410 on the frame 400, and the frame 700. The upper second opening 71 is conducted outward to achieve a lowering of the temperature in the vicinity of the electrode 310. The rectangular fins 220 on the reflector 2 increase the heat dissipation area of the reflector, which further enhances the thermal effect of the M355387. The design of this embodiment can reduce the temperature of the lamp 3 〇〇 and the old light module on the one hand. On the other hand, by lowering the temperature of the lamp 3, the temperature and luminous efficiency of the lamp 300 are increased, thereby improving the brightness of the overall liquid crystal display device. 5 Embodiment 2 ^ Fig. 4 is a partial perspective view of the embodiment. In the present embodiment, the configuration of the heat radiating sheet is different from that of the first embodiment, and other constituent components are the same as those of the embodiment. In the present embodiment, the reflector 200 is formed with a heat dissipation hole 210 corresponding to the position of the electrode 310. The high temperature air in the reflector 200 is transmitted to the outside through the heat dissipation hole 210 on the reflector 200, the first opening 410 on the frame 4, and the second opening 71 on the frame 700. The effect of lowering the temperature near the electrode 310 is achieved. An outwardly extending l-shaped heat sink 222 is formed on the upper edge of the heat dissipation hole 210. One end of the L-shaped heat release sheet 222 appropriately shields the heat dissipation hole 21〇 to prevent foreign matter from entering the inside of the reflection cover 200 and reducing light leakage from the heat dissipation hole 21 . On the other hand, the L-shaped political sheet 222 increases the heat dissipation area of the body of the reflector 200 to further improve the heat conduction effect. The design of this embodiment can reduce the temperature of the lamp 300 and the backlight module on the one hand. On the other hand, by lowering the temperature of the lamp 2 〇 300, the temperature and luminous efficiency of the lamp tube 3 are increased, thereby improving the brightness of the entire liquid crystal display device. The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be based on the scope of the patent application, and is not limited to the above embodiments. 11 25 M355387 [Simplified description of the drawings] Fig. 1 is a schematic view of the first embodiment of the present invention. Fig. 2 is a partial perspective view of the first embodiment of the present invention. Fig. 3 is an exploded view of the first embodiment of the present invention. 4 is a partial cross-sectional view of the second embodiment of the present invention. [Main component symbol description] 10 liquid crystal display device 100 light guide plate 110 light guide plate light-incident surface 120 light guide plate light-emitting surface 200 reflection cover 210 heat dissipation hole 220 rectangular heat sink 222 L-shaped heat dissipation Sheet 300 lamp 310 electrode 400 plastic frame 410 500 610 612 620 622 700 710 800 900 910 First opening liquid crystal panel diffused on the diffusion film 臈 second 稜鏡 piece first 框 frame second opening backlight module support ring narrow Seam 12