M339006 八、新型說明： 【新型所屬之技術領域】 本新型是有關於一種背光模組及其應用，且特別是有 關於可簡化背板設計之背光模組及其在液晶顯示裝置上的 應用。 _ 【先前技術】 隨著資訊、通信產業不斷地推陳出新，帶動了液晶顯 • 示器（Liquid Crystal Display ; LCD)市場的蓬勃發展。液晶 顯示器具有高畫質、體積小、重量輕、低驅動電壓、與低 消耗功率等優點，因此被廣泛應用於個人數位助理 (Personal Digital Assistant; PDA)、行動電話、攝錄放影機、 筆記型電腦、桌上型顯示器、車用顯示器、及投影電視等 消費性通訊或電子產品。 目前市場上常見之液晶顯示器大部分為背光型液晶顯 示器，這類的液晶顯示器一般主要係由前端之液晶顯示面 _ 板以及後端之背光模組所組成。因此，背光模組為液晶顯 示器中相當關鍵之零組件之一。背光模組可依照光源入射 位置的不同分成側光式入光（Edge Lighting)與直下式入光 ' (Bottom Lighting)兩種，藉以提供液晶顯示器一面光源。 然而，現今液晶顯示器已日益趨向輕薄化發展，且需 兼具低製造成本之考量，因而如何使背光模組更加輕薄化 且具有低製造成本之優勢，已成為目前發展研究的課題之 M339006 【新型内容】 因此本新型之一方面係在於提供一種背光模組及其應 用，藉以簡化背板之設計，因而節冑背板之材料，並可減 輕重量 根據本新型之實施例，本新型之背光模組至少包含有 框架、二背板、導光板及至少—光源。框架具有相對之一 正面開口和一背面開口，此些背板設置於框架的背面開口 上，且此些背板係分別位於背面開口的相對兩側，其中此 些背板之總面積係實質小於框架之正面開口之面積的二分 之一。導光板設置於此些背板上，光源設置於導光板之至 少一側。 又，根據本新型t實施<列，本新型之背光模組可應用 於液晶顯示裝置中。 因此，本新型之背光模組可簡化背板之設計，減少材 料之耗費，並可減輕重量。 【實施方式】 為讓本新型之上述和其他目的、特徵、優點與實施例 能更明顯易懂，本說明書將特舉出一系列實施例來加以說 ，。但值得注意較，此些實施例只是用以說明本新型之 實施方式，而非用以限定本新型。 請參照第1圖，其緣示依照本新型之第一實施例之液 曰曰顯不面板與为光模組的局部剖面示意圖。本實施例背光 模、、且100可組合-液晶顯示模組扇，用以作為液晶顯示器 (Liquid Crysta! Display ; LCD)的侧向式背光模組。背光模 6 M339006 組100包含有至少一燈罩110、光源120、導光板130、反 射片140、光學膜片組150、框架160及二背板170。燈罩 110係設置於導光板130之一侧，用以容設光源120。光渾 120係設置於燈罩11〇中，用以側向發光至導光板130，並 由導光板130來導引發光。反射片140設置於導光板13:0 的下方，用以反射發光。光學膜片組150設置於導光板130 的上方，以進行不同目的之光學改善動作。框架丨6〇係用 組裝燈罩110、光源120、導光板130、反射片140、光學 膜片組150及此些背板170成一體。此些背板170係設置 導光板130和框架160的下方，且位於導光板130之相對 兩侧，用以確保背光模組1〇〇整體的結構強度。 如第1圖所示，本實施例之燈罩110係由不透光材貧 所製成，例如：塑化材料、金屬材料或上述材料之缸合丨 燈罩110具有開口 111、腔室112及組合突出部113。開口 111係用以出光至導光板130,腔室112係形成於導光板130 的一侧，用以容置光源120，腔室112的内側側壁112a可 塗佈有高反射率材料，例如·· Al、Ag、Cr、Mo、Ti、Pt、 Pd、Au、Ti02、Si02、AINd、耐黃化且耐熱之白色反射漆 料或上述材料之任意組合，用以使一部分未射入導光板130 的入射光可再反射至導光板130之中。組合突出部113係 形成於相對於導光板130之一側，且對應於框架160，用以 卡掣組合於框架160。 如第1圖所示，本實施例之光源120例如為：冷陰極 燈管（Cold Cathode Fluorescent Lamp ; CCFL)熱陰極燈管 (Hot Cathode Fluorescent Lamp ; HCFL)或發光二極體（Light M339006M339006 VIII. New Description: [New Technology Field] The present invention relates to a backlight module and its application, and in particular to a backlight module capable of simplifying the backplane design and its application to a liquid crystal display device. _ [Prior Art] With the continuous innovation of the information and communication industry, the market for liquid crystal display (LCD) has been booming. LCD monitors are widely used in personal digital assistants (PDAs), mobile phones, camcorders, and notebooks because of their high image quality, small size, light weight, low driving voltage, and low power consumption. Consumer communications or electronic products such as computers, desktop displays, automotive displays, and projection televisions. Most of the liquid crystal displays currently on the market are backlight type liquid crystal displays. These liquid crystal displays are generally composed of a front-end liquid crystal display panel and a backlight module at the back end. Therefore, the backlight module is one of the most critical components in the liquid crystal display. The backlight module can be divided into two types: Edge Lighting and Bottom Lighting according to the incident position of the light source, thereby providing a light source for the liquid crystal display. However, today's liquid crystal displays have become increasingly thin and light, and need to have a low manufacturing cost consideration. Therefore, how to make the backlight module thinner and lighter and has a lower manufacturing cost has become the subject of current research and development. Therefore, one aspect of the present invention is to provide a backlight module and an application thereof, thereby simplifying the design of the backboard, thereby saving the material of the backboard and reducing the weight. According to the embodiment of the present invention, the backlight module of the present invention The group includes at least a frame, two back plates, a light guide plate and at least a light source. The frame has a front opening and a rear opening. The back plates are disposed on the back opening of the frame, and the back plates are respectively located on opposite sides of the back opening, wherein the total area of the back plates is substantially smaller than One-half of the area of the front opening of the frame. The light guide plate is disposed on the back plates, and the light source is disposed on at least one side of the light guide plate. Further, according to the present invention, the backlight module of the present invention can be applied to a liquid crystal display device. Therefore, the backlight module of the present invention simplifies the design of the backboard, reduces material consumption, and reduces weight. The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. However, it is to be understood that these embodiments are merely illustrative of the embodiments of the present invention and are not intended to limit the present invention. Please refer to FIG. 1 for a partial cross-sectional view of a liquid crystal display panel and a light module according to a first embodiment of the present invention. In this embodiment, a backlight module and a 100-combinable liquid crystal display module fan are used as a side-lit backlight module of a liquid crystal display (Liquid Crysta! Display; LCD). The backlight module 6 M339006 group 100 includes at least one lampshade 110, a light source 120, a light guide plate 130, a reflective sheet 140, an optical film set 150, a frame 160, and two back plates 170. The lamp cover 110 is disposed on one side of the light guide plate 130 for accommodating the light source 120. The aperture 120 is disposed in the lamp cover 11A for laterally emitting light to the light guide plate 130, and is guided by the light guide plate 130 to emit light. The reflection sheet 140 is disposed under the light guide plate 13:0 for reflecting the light. The optical film set 150 is disposed above the light guide plate 130 for optical improvement actions for different purposes. The frame 丨6 用 is assembled with the lamp cover 110, the light source 120, the light guide plate 130, the reflection sheet 140, the optical film group 150, and the back sheets 170. The back plates 170 are disposed below the light guide plate 130 and the frame 160, and are located on opposite sides of the light guide plate 130 to ensure the structural strength of the backlight module 1 as a whole. As shown in FIG. 1 , the lampshade 110 of the present embodiment is made of a light-impermeable material, for example, a plasticized material, a metal material or a cylinder-mounted lampshade 110 of the above material has an opening 111, a chamber 112 and a combination thereof. Projection 113. The opening 111 is used to discharge light to the light guide plate 130. The chamber 112 is formed on one side of the light guide plate 130 for accommodating the light source 120. The inner side wall 112a of the chamber 112 can be coated with a high reflectivity material, for example, Al, Ag, Cr, Mo, Ti, Pt, Pd, Au, TiO 2 , SiO 2 , AINd, yellowing resistant and heat resistant white reflective paint or any combination of the above materials for causing a portion not to be incident on the light guide plate 130 The incident light can be reflected back into the light guide plate 130. The combination protrusion 113 is formed on one side with respect to the light guide plate 130, and corresponds to the frame 160 for chucking to the frame 160. As shown in FIG. 1, the light source 120 of this embodiment is, for example, a Cold Cathode Fluorescent Lamp (CCFL) Hot Cathode Fluorescent Lamp (HCFL) or a Light Emitting Diode (Light M339006).
Emitting Diode ; LED) 〇 如第1圖所示，本實施例之導光板130係設置於光渾 120的一側，以導引出光，導光板130例如係利用射出成型 的方式來製成平板形結構或楔形板結構，其材質例如為光 硬化型樹脂、丙烯或聚甲基丙烯酸甲脂（PMMA)。導光板 m 130可包含有出光面131、光反射面132及入光面133。出 * 光面131係位於導光板130的正面，且對應於燈罩110的 開口 111，以使光線發出，其中出光面131可具有霧面處理 鲁 或散射點設計，藉以均勻化導光板130的出光，減少出光 不均（Mura)的現象。光反射面132係位於導光板130的底 面，且相對於出光面131。光反射面132可形成有導光結構 (未繪示），例如連續性的V形結構（亦即V-Cut結構）、霧面 結構或散射點結構。入光面133係形成於導光板130之+Emitting Diode; LED) As shown in Fig. 1, the light guide plate 130 of the present embodiment is disposed on one side of the aperture 120 to guide the light, and the light guide plate 130 is formed into a flat shape by, for example, injection molding. The structure or the wedge-shaped plate structure is made of, for example, a photocurable resin, acryl or polymethyl methacrylate (PMMA). The light guide plate m 130 may include a light emitting surface 131, a light reflecting surface 132, and a light incident surface 133. The light surface 131 is located on the front surface of the light guide plate 130 and corresponds to the opening 111 of the lamp cover 110 to emit light. The light exit surface 131 may have a matte finish or a scattering point design to homogenize the light output of the light guide plate 130. To reduce the phenomenon of uneven light (Mura). The light reflecting surface 132 is located on the bottom surface of the light guide plate 130 and is opposite to the light emitting surface 131. The light reflecting surface 132 may be formed with a light guiding structure (not shown) such as a continuous V-shaped structure (i.e., a V-Cut structure), a matte structure, or a scattering point structure. The light incident surface 133 is formed on the light guide plate 130 +
I ! 侧，其鄰接於燈罩110的開口 111，入光面133可具有例如： V形結構（V-Cut)、S形波浪結構或表面粗糙化處理（未繪 示），藉以提升光線的入射效率和光耦合效率。 • 值得注意的是，當導光板130為楔形板結構時，導羌 板130可選擇未設置導光結構，而係藉由導光板130的楔 形板結構來形成具有斜面角度的光反射面132,以反射光線 由出光面131射出。 如第1圖所示，本實施例之反射片140係設置於導光 板130的下方，用以使入射至光反射面132的光線形成全 反射。值得注意的是，導光板130的光反射面132亦可塗 佈具有高反射率的材料，例如：Al、Ag、Cr、Mo、Ti、Pt、 Pd、Au、Ti02、Si〇2、AINd、财黃化且耐熱之白色反射漆 8 M339006 料或上述材料之任意組合，以反射入射光線，藉以進一步 取代設置反射片140。 如第1圖所示，本實施例之光學膜片組150例如為·· 擴散片、稜鏡片、逆稜鏡片（Turning Prism Sheet)、增亮膜 (Brightness Enhancement Film ; BEF)、反射式增亮膜（Dual Brightness Enhancement Film ; DBEF)、非多層膜式反射偏 光片（Diffused Reflective Polarizer Film ; DRPF)或上述之任 意組合，其設置於導光板13〇的上方，用以使由導光板130 的出光可再進行不同目的之光學改善動作。 請參照第1圖和第2圖，第2圖係繪示依照本新型之 第一實施例之背光模組的立體示意圖。本實施例之框架！6〇 例如係以高強度的金屬或塑膠材料所製成，其中框架160 具有相對之正面開口 161和背面開口 162 ’並設有組合部 163及卡合部164。正面開口 161和背面開口 162係分別形 成於框架160之相對兩側，組合部163係形成於框架160 之内侧，並對應於燈罩11〇之組合突出部113，用以卡掣組 合此組合突出部113,因而本實施例之框架160可緊密地與 燈罩110進行卡掣組合。卡合部164係形成於框架160的 外周面，用以對應卡掣組合於此些背板17〇。 如第1圖和第2圖所示，本實施例之背板170較佳係 高強度之金屬材料所製成，例如係選自由不銹鋼、鋁、鋁 鎂合金、銅、銅合金、鐵及其合金所組成之一族群，並可 利用例如沖壓、精密鑄造、模鑄、機械加工、壓鑄或龜造 等方式來製成。背板Π0係設置於框架160的背面開口 162 上（亦即位於導光板130的一側上），且二背板170係分別位 9 M339006 於背面開口 162的相對兩側，其中此些背板n〇之總面積 係實質小於框架160之正面開口 161之面積的二分之一， 較佳係小於正面開口 161之面積的五分之一。每一此些背 板170設有至少一側卡合部171和至少一組合孔172，侧卡 合部171係形成於每一此些背板170的一側，用以對應卡 掣組合於框架160。組合孔172可用以進行嫘固組裝，以穩 • 固地螺固組裝此些背板170於燈罩110和框架16〇上，因 而此些背板170可穩固地組裝於背光模組1〇〇之背面。 鲁值得注意的是，在本實施例中，此些背板17〇係分別 設置於燈罩110和導光板130的下方，且位於燈罩11〇和 導光板130的相對兩端，以穩固地組合燈罩11〇、導光板 130、框架160及此些背板170成一體，形成穩固的組合結 構’提升背光模組100的整體結構強度。因此，本實施病 之此些背板可由習用的單一整面背板簡化為二背板，來確 保結構強度，因而本實施例之此些背板17〇可相較習用背 板（單一背板)節省二分之一以上的材料。 # 請參照第3圖，其繪示依照本新型之第二實施例之液 晶顯示面板與背光模組的局部剖面示意圖。以下僅就本實 施例與第一實施例之相異處進行說明，關於相似處在此不 再贅述。相較於第一實施例，第二實施例之背光模組1〇〇a 亦可設有二燈罩ll〇a和至少二光源120a，其分別設置於導 光板130之相對兩側，因而可分別由導光板丨之相對兩 侧來入射光線。此時，此些背板170a係設置於此些燈蕈ii〇a 和導光板130的相對兩端，以穩固地組合此些燈罩11〇a、 導光板130、框架16〇及此些背板17〇a成一體，形成穩固 M339006 的組合結構。 由上述本新型的實施例可知，本新型之背光模組及其 應用可利用燈罩、導光板、框架及此些背板之間相互的緊 密組合結構來確保整體之結構強度，因而可簡化背板之設 汁’減少材料之耗費，並可減輕重量。 雖然本新型已以實施例揭露如上，然其並非用以限定 本新型’任何熟習此技藝者，在不脫離本新型之精神和範 圍内，當可作各種之更動與潤飾，因此本新型之保乘範圍 當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本新型之上述和其他目的、特徵、優點與實施例 能更明顯易懂’所附圖式之詳細說明如下： 第1圖係繪示依照本新型之第一實施例之液晶顯示面 板與背光模組的局部剖面示意圖3 第2圖係繪示依照本新型之第一實施例之背光模組的 # 立體示意圖。 第3圖係繪示依照本新型之第二實施例之液晶顯示面 板與背光模組的局部剖面示意圖。 【主要元件符號說明】 110、110a :燈罩 112 :腔室 120、120a :光源 131 :出光面 100、100a :背光模組 111 :開口 113 :組合突出部 130 :導光板 11 M339006 132 :光反射面 133 : 140 :反射片 150 : 160 :框架 161 : 162 :背面開口 163 ： 164 :卡合部 170 ’ 171 :側卡合部 172 ： 200 :液晶顳示面板 入光面 光學膜片組 正面開口 組合部 170a :背板 組合孔The I! side is adjacent to the opening 111 of the lampshade 110, and the light incident surface 133 may have, for example, a V-shaped structure (V-Cut), an S-shaped wave structure, or a surface roughening treatment (not shown) to enhance the incidence of light. Efficiency and optical coupling efficiency. It should be noted that when the light guide plate 130 is a wedge plate structure, the guide plate 130 may be selected to have no light guiding structure, and the light reflecting surface 132 having a bevel angle is formed by the wedge plate structure of the light guiding plate 130. The reflected light is emitted from the light exit surface 131. As shown in Fig. 1, the reflection sheet 140 of the present embodiment is disposed below the light guide plate 130 for totally reflecting the light incident on the light reflection surface 132. It should be noted that the light reflecting surface 132 of the light guide plate 130 may also be coated with a material having high reflectivity, such as: Al, Ag, Cr, Mo, Ti, Pt, Pd, Au, Ti02, Si〇2, AINd, A yellow reflective heat-resistant white reflective paint 8 M339006 material or any combination of the above materials to reflect incident light, thereby further replacing the reflective sheet 140. As shown in Fig. 1, the optical film group 150 of the present embodiment is, for example, a diffusion sheet, a tantalum sheet, a Turning Prism Sheet, a Brightness Enhancement Film (BEF), and a reflective brightening. A film (Dual Brightness Enhancement Film; DBEF), a non-multilayer film reflective polarizer (DRPF), or any combination thereof, is disposed above the light guide plate 13A for light emission from the light guide plate 130. Optical improvement actions for different purposes can be performed. Referring to FIG. 1 and FIG. 2, FIG. 2 is a perspective view of a backlight module according to a first embodiment of the present invention. The framework of this embodiment! 6〇 is made, for example, of a high-strength metal or plastic material, wherein the frame 160 has a front opening 161 and a rear opening 162' and is provided with a combination portion 163 and an engaging portion 164. The front opening 161 and the back opening 162 are respectively formed on opposite sides of the frame 160, and the combining portion 163 is formed on the inner side of the frame 160 and corresponds to the combined protruding portion 113 of the lamp cover 11 for clamping and combining the combined protrusions. 113, thus the frame 160 of the present embodiment can be closely combined with the lamp cover 110 in a cassette. The engaging portion 164 is formed on the outer peripheral surface of the frame 160 for combining the latches with the back plates 17A. As shown in FIG. 1 and FIG. 2, the back sheet 170 of the present embodiment is preferably made of a high-strength metal material, for example, selected from the group consisting of stainless steel, aluminum, aluminum-magnesium alloy, copper, copper alloy, iron, and the like. A group of alloys can be made by, for example, stamping, precision casting, die casting, machining, die casting, or turtle casting. The backplane Π0 is disposed on the back opening 162 of the frame 160 (ie, on one side of the light guide plate 130), and the two back plates 170 are respectively located on opposite sides of the back opening 162, wherein the backplanes The total area of n〇 is substantially less than one-half of the area of the front opening 161 of the frame 160, preferably less than one-fifth of the area of the front opening 161. Each of the back plates 170 is provided with at least one side engaging portion 171 and at least one combined hole 172. The side engaging portions 171 are formed on one side of each of the back plates 170 for combining the cassettes with the frame. 160. The combination hole 172 can be used for tamping assembly to stably and stably assemble the back plates 170 on the lamp cover 110 and the frame 16 ,, so that the back plates 170 can be stably assembled in the backlight module 1 back. It should be noted that, in this embodiment, the back plates 17 are respectively disposed under the lamp cover 110 and the light guide plate 130, and are located at opposite ends of the lamp cover 11 and the light guide plate 130 to stably combine the lampshades. 11〇, the light guide plate 130, the frame 160 and the back plates 170 are integrated to form a stable combined structure to enhance the overall structural strength of the backlight module 100. Therefore, the back plates of the present invention can be simplified from the conventional single-face back plate to the second back plate to ensure the structural strength, so that the back plates 17 of the embodiment can be compared with the conventional back plate (single back plate) ) Save more than half of the material. #Please refer to FIG. 3, which is a partial cross-sectional view showing a liquid crystal display panel and a backlight module according to a second embodiment of the present invention. Only the differences between the embodiment and the first embodiment will be described below, and the similarities will not be described herein. Compared with the first embodiment, the backlight module 1A of the second embodiment may be provided with two lampshades 11a and at least two light sources 120a respectively disposed on opposite sides of the light guide plate 130, so that respectively Light is incident from opposite sides of the light guide plate. At this time, the back plates 170a are disposed at opposite ends of the lamp 蕈 〇 〇 a and the light guide plate 130 to firmly combine the lamp covers 11 〇 a, the light guide plate 130 , the frame 16 〇 and the back plates The 17〇a is integrated to form a combined structure of the stable M339006. According to the embodiment of the present invention, the backlight module of the present invention and the application thereof can utilize the close combination structure of the lamp cover, the light guide plate, the frame and the back plates to ensure the overall structural strength, thereby simplifying the back plate. The juice design reduces the cost of materials and reduces weight. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention to those skilled in the art, and various modifications and refinements can be made without departing from the spirit and scope of the present invention. The scope of the application is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; FIG. 2 is a schematic perspective view of a backlight module according to a first embodiment of the present invention. FIG. 2 is a schematic perspective view of a backlight module according to a first embodiment of the present invention. 3 is a partial cross-sectional view showing a liquid crystal display panel and a backlight module according to a second embodiment of the present invention. [Main component symbol description] 110, 110a: lamp cover 112: chamber 120, 120a: light source 131: light-emitting surface 100, 100a: backlight module 111: opening 113: combined protrusion 130: light guide plate 11 M339006 132: light-reflecting surface 133 : 140 : Reflecting sheet 150 : 160 : Frame 161 : 162 : Back opening 163 : 164 : Engaging portion 170 ' 171 : Side engaging portion 172 : 200 : Liquid crystal display panel light-emitting surface optical film group front opening combination Part 170a: back plate combination hole
1212