1352856 95109 2i296twf.d〇c/e 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種背光模組及顯示裝置，且特別是 有關於一種具有良好光源散熱效果的背光模組及顯示裝 置。 【先前技術】 自從第一台以陰極射線管(Cathode Ray Tube, CRT)為 工作模式的黑白電視機發明以來，顯示技術便以飛快的速 度不斷演進。由於此種以陰極射線管模式工作的顯示器具 有體積大、重量重、輻射量高及晝質較差等缺點，因此平 面顯示技術便不斷地開發出新技術。在這些平面顯示技術 中，又以具有輕薄短小、省電、無輻射、全彩及方便攜帶 等優點的液晶顯示器(Liquid Crystal Display，LCD)技術最 為純熟且普及化。舉凡手機、語言翻譯機、數位相機、數 位攝影機、個人數位助理(personal digital assistant，pDA)、 筆記型電腦甚至於桌上型顯示器都有其應用範圍β 液晶顯示器包括液晶顯示面板(Liquid Crystal Dispky1352856 95109 2i296twf.d〇c/e IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a display device, and more particularly to a backlight module having a good light source heat dissipation effect and Display device. [Prior Art] Since the invention of the first black-and-white television set using the cathode ray tube (CRT) as the operating mode, the display technology has been evolving at a rapid rate. Since such a display device operating in a cathode ray tube mode has disadvantages such as large volume, heavy weight, high radiation amount, and poor enamel, the flat display technology has continuously developed new technologies. Among these flat display technologies, liquid crystal display (LCD) technology, which is light, short, power-saving, non-radiative, full-color, and portable, is the most sophisticated and popular. Mobile phones, language translators, digital cameras, digital cameras, personal digital assistants (PDAs), notebook computers, and even desktop monitors have their applications. Liquid crystal displays include liquid crystal display panels (Liquid Crystal Dispky).
Panel)以及者光模組(Back Light Module)。背光模組配置於 液曰^顯示面板的-側’划以提供液晶顯示面板^夠的顯 示亮度。 3 一圖1為習知一種背光模組的局部剖面圖。請參考圖1， 者光模組100包括一印刷電路板11〇、多個發光二極體 及多個接腳130 ’其帽光二極體12G焊接在印刷電路板 110上，而接腳130連接於發光二極體12〇以及印刷電路 5 1352856 95109 21296twf.doc/e 板110之間，且接腳130用以將訊號傳遞至發光二極體 120，使發光二極體12()發光。 t然而’印刷電路板110之材質通常為不易散熱的樹 脂，因此當發光二極體120持續發光一段時間之後，發光 一極體12G所產生的熱難以藉由印刷電路板11Q傳導移 除’發光-極體12G的光源特性便容易偏移，如背光模組 1〇〇一提供給液晶顯示面板(圖未示)的光波長改變 ，進而影響 顯示裝置（圖未示）的顯示品質。 此外’難以移除的熱也會讓發光二極體120容易損 壞，進而影響背光模組100的使用壽命。 【發明内容】 本發明之目的是提供—祕有&好錢效果的 背光模組。 猫- ί發明之另—目的是提供—種具有穩定顯示品質的 顯不裝置。Panel) and Back Light Module. The backlight module is disposed on the side of the liquid crystal display panel to provide sufficient brightness for the liquid crystal display panel. 3 Figure 1 is a partial cross-sectional view of a conventional backlight module. Referring to FIG. 1 , the optical module 100 includes a printed circuit board 11 , a plurality of light emitting diodes and a plurality of pins 130 ′. The cap light diodes 12G are soldered on the printed circuit board 110 , and the pins 130 are connected. The light-emitting diode 12 〇 and the printed circuit 5 1352856 95109 21296 twf. doc / e board 110, and the pin 130 is used to transmit signals to the light-emitting diode 120, so that the light-emitting diode 12 () emits light. However, the material of the printed circuit board 110 is generally a resin that is not easy to dissipate heat. Therefore, when the light-emitting diode 120 continues to emit light for a period of time, the heat generated by the light-emitting diode 12G is difficult to be removed by the printed circuit board 11Q. The light source characteristics of the polar body 12G are easily shifted, such as the light wavelength of the backlight module 1 provided to the liquid crystal display panel (not shown), thereby affecting the display quality of the display device (not shown). In addition, the heat that is difficult to remove can also cause the light-emitting diode 120 to be easily damaged, thereby affecting the service life of the backlight module 100. SUMMARY OF THE INVENTION It is an object of the present invention to provide a backlight module that has a secret effect and a good money effect. Cat - ί invented the other - the purpose is to provide a display device with stable display quality.
=上賴是其他目的，本發明提出—射光模組， :、L括-框架：-可祕_電路娜⑶胁响W circuit 献署於個光Γ以及夕個接腳(pin)。可撓性印刷電路板 2於框架上，其具有-本體、—開σ以及至少—折彎部， 二，口位於本體，折彎部由本體裁响成，而開口可 ==。配置於開口内，而多個接腳連接於可撓 性印刷電與紐之間，a使統固定於開口内。 ίί::之一ΐ施例中’上述之框架之材質為金屬。 在本發明之-實施例中，折彎部包括多個訊號接塾。 6 1352856 95109 2i296twf.doc/e 在本發明之一實施例中，上述之折彎部為一訊號輸入 端或一電源輸入端。 在本發明之一實施例中’上述之光源包括發光二極體。 . 在本發明之一實施例中，上述之背光模組更包括一配 置於框架與光源之間的散熱層。 在本發明之一實施例中’上述之散熱層的材質包括鋁 . 或散熱膠。 • 本發明另提出一種顯示裝置’包括一液晶顯示面板以 及一上述之背光模組’其中液晶顯示面板配置於該背光模 組之一側。 在本發明之一實施例中，上述之顯示裝置更包括一光 —于膜片’且光學膜片配置於液晶顯示面板與背光模組之間。 在本發明之一實施例中，上述之光學膜片包括擴散 片、增光片或稜鏡片。 八 本發明又提出上述之液晶顯示裝置的製造方法，其包 • 括下列之步驟。首先，提供一可撓性印刷電路板。之後， 裁切可撓性印刷電路板，並折彎被裁切的可撓性印刷電路 ，，以於可撓性印刷電路板之本體上形成一開口及一折彎 、 部。接著’將光源固定於開口。然後，將可撓性電路板配 •‘ 置於框架内，以形成一背光模組。最後，提供一液晶顯示 面板’並組立液晶顯示面板及背光模組，以形成一液晶顯 示裝置。 ^ 在本發明之-實施例中，裁切可繞性電路板前，更包 於可撓性電路板上規劃一預裁切區域。 7 1352856 95109 21296twf.doc/e 在本發明之一實施例中，固定光源於開口的步驟包括 利用接腳以搭接光源與可撓性印刷電路板。 在本發明之一實施例中，固定光源於開口的步驟更包 括於可撓性印刷電路板下配置一黏著層，且光源黏附黏著 層。 在本發明之一實施例中，於可撓性印刷電路板下配置 黏著層的步驟’更包括於黏著層及可撓性印刷電路板之間 配置一散熱層。 在本發明之背光模組、應用此背光模組之液晶顯示裝 置以及液晶顯示裝置的製造方法中’設置於可撓性印刷電 路板之開口申的光源可以直接接觸金屬框架，以將光源產 生的熱藉由金屬框架移除。因此，光源的散熱效果佳，背 光模組的使用壽命長’液晶顯示裝置進而具有穩定的顯示 品質。此外，裁切部分可撓性印刷電路板以形成折彎部及 開口時’折彎部可作為電源或訊號的輸入端，因此物料得 到有效地利用，進而節省成本。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉一實施例，並配合所附圖式，作詳細說明 如下。 【實施方式】 圖2為本發明一實施例之背光模組的剖面圖，而圖3 為圖2之背光模組的局部放大圖。請同時參考圖2及圖 月光模組200包括一框架21〇、一可撓性印刷電路板220、 多個光源230以及多個接腳240。可撓性印刷電路板220 8 1352856 95i09 2i296twf.doc/e 配置於框架210上’其具有-本體22卜—開口 222以及 至少一折彎部224，其中開口 222位於本體221，且折彎部 224是由本體221裁切而成，而開口 222可容納折彎部224。 承上述，光源230配置於開口 222内，且本實施例之 光源230為發光二極體。接腳24〇分別對應連接於光源23〇 與可撓性印刷電路板220之間，以使光源23〇能夠固定於 開口 222内，且接腳240用以傳遞訊息至光源23〇，以使 光源230發光。 圖4A〜4C為圖2之可撓性印刷電路板的製作流程示 意圖。請依序參考圖4A〜4C ,在形成本實施例之可撓性 印刷電路板.220的過程中，是先在本體221上利用裁切線 以規晝出預裁切的區域221a。之後，沿著裁切線裁切此區 域221 a ’並折彎被裁切的區域221 a，以形成開口 222以及 折彎部224。然後，將光源230置於開口 222中，並利用 接腳240使光源230與可撓性印刷電路板22〇的本體221 搭接，以使光源230固定於開口 222内。 此外’如圖4C示’為了要讓可撓性印刷電路板mo 可與其他電子裝置或是電源電性連接，因此本實施例之折 彎部224上更配置有多個訊號接墊226,其中訊號接墊226 的數量及訊號接墊226彼此之間的配置間隔距離，可依照 使用需求來設置。 另外’為了要讓光源230能夠固接於可撓性印刷電路 板220 ’因此在本體221的一側可先貼附一層黏著層212， 如雙面膠或散熱膠’而此黏著層212可使可撓性印刷電路 9 1352856 95109 21296twf.doc/e 板220黏附於框架210上，以組立成本實施例之背光模組 200，如圖3示。 ' 值得注意的是，由於可撓性印刷電路板220是配置於 • 框架210上，且本實施例之框架210的材質為金屬，而光 源230設置於開口 222内，因此當光源230持續發光時， . 光源230可以利用框架21〇藉由傳導的方式將其所產生的 熱有效地移除，因此光源230不易損壞，且其光學特性不 易偏移。相較於習知，本實施例之背光模組200具有輕具 *的使轉命。 ^ 特別的是’本實施例之折彎部224可伸出於框架21〇 之外’以使整流器(converter)或是其他電子裝置能夠與訊號 接墊226連接，以作為訊號輸入端或是電源輸入端，因此 使用本實施例之背光模組200可以有效利用物料，節省成 本。此外，雖然本實施例之可撓性印刷電路板22〇所裁切 折彎的折彎部224為一長條狀。在另一實施例中，也可以 將可撓性印刷電路板220,裁切以形成對開的折彎部224,， # 如圖5示。 另外’為了更為有效地移除光源230所產生的熱，我 . 們也可以在光源230與黏著層212之間配置一散熱層 250，以加速移除光源230所產生的熱，如圖6示之背光模 .· 組200’。此散熱層250之材質為導熱速度快的金屬，較佳 為铭’或者也可以是與黏著層212 —樣同為散熱膠。 圖7為應用圖2之为光模組的顯示裝置的示意圖。請 參考圖7，將背光模組200與一液晶顯示面板3〇〇組裝以 95109 21296twf. doc/e 形成一顯示裝置400，由於本發明之背光模組200具有良 好的光源散熱效果，因此光源230的光學特性不易產生偏 移，背光模紕200便能夠提供液晶顯示面板300光學特性 穩定的光線’進而讓顯示裝置400具有穩定的顯示品質。 另外’為了讓背光模組200提供液晶顯示面板300均 勻的面光源’因此在背光模組200與液晶顯示面板300之 間更可以設置一光學膜片310,而此光學膜片310可以是 擴散片、增光片、棱鏡片或這些膜片的組合。 综上所述’本發明之背光模組及應用此背光模組之顯 示裝置至少具有下列之優點： 一、光源和金屬框架接觸，光源的散熱效果佳，因此 光源的光學特性不易偏移，讓使用此背光模組的 液晶顯示裝置能具有穩定的顯示品質。 .一、光源的散熱效果較習知為佳，因此背光模組及使 用此背光模組的液晶顯示裝置的使用壽命亦較習 知為長。 —、折考原本位於開口處的可撓性電路板以形成折 % ，並使折’母部作為電源或訊號的輸入端，可 以有效利用物料，進而節省成本。 雖然本發明已以-實施例揭露如上，然其並非用以限 定本發明，任⑽触術綱巾具有通常知識者，在不脫 離本發明讀神和範_，當可作轉之更動與潤飾，因 =本發明之保護當視後附之申料纖騎界定= 赖 赖 is another purpose, the present invention proposed - the light module, : L bracket - frame: - secret _ circuit Na (3) slamming W circuit is provided in a light and a pin. The flexible printed circuit board 2 is on the frame, and has a body, an opening σ, and at least a bent portion. The second port is located on the body, and the bent portion is cut by the body, and the opening can be ==. It is disposed in the opening, and a plurality of pins are connected between the flexible printed circuit and the button, and the a system is fixed in the opening. Ίί:: In one of the embodiments, the material of the above frame is metal. In an embodiment of the invention, the bend comprises a plurality of signal contacts. 6 1352856 95109 2i296twf.doc/e In one embodiment of the invention, the bent portion is a signal input terminal or a power input terminal. In an embodiment of the invention, the light source described above comprises a light emitting diode. In an embodiment of the invention, the backlight module further includes a heat dissipation layer disposed between the frame and the light source. In an embodiment of the invention, the material of the heat dissipation layer comprises aluminum or a heat sink. The present invention further provides a display device ‘including a liquid crystal display panel and a backlight module ’, wherein the liquid crystal display panel is disposed on one side of the backlight module. In an embodiment of the invention, the display device further includes a light film and the optical film is disposed between the liquid crystal display panel and the backlight module. In an embodiment of the invention, the optical film comprises a diffusion sheet, a brightness enhancement sheet or a gusset sheet. The present invention further provides a method of manufacturing the above liquid crystal display device, which comprises the following steps. First, a flexible printed circuit board is provided. Thereafter, the flexible printed circuit board is cut and the cut flexible printed circuit is bent to form an opening and a bent portion on the body of the flexible printed circuit board. Next, the light source is fixed to the opening. Then, the flexible circuit board is placed in the frame to form a backlight module. Finally, a liquid crystal display panel is provided and the liquid crystal display panel and the backlight module are assembled to form a liquid crystal display device. In the embodiment of the present invention, a pre-cut area is planned on the flexible circuit board before cutting the flexible circuit board. 7 1352856 95109 21296twf.doc/e In one embodiment of the invention, the step of securing the light source to the opening includes utilizing the pins to overlap the light source and the flexible printed circuit board. In an embodiment of the invention, the step of fixing the light source to the opening further comprises disposing an adhesive layer under the flexible printed circuit board, and the light source adheres to the adhesive layer. In an embodiment of the invention, the step of disposing the adhesive layer under the flexible printed circuit board further includes disposing a heat dissipation layer between the adhesive layer and the flexible printed circuit board. In the backlight module of the present invention, the liquid crystal display device using the backlight module, and the method of manufacturing the liquid crystal display device, the light source disposed on the flexible printed circuit board can directly contact the metal frame to generate the light source. Heat is removed by the metal frame. Therefore, the heat dissipation effect of the light source is good, and the life of the backlight module is long. The liquid crystal display device further has stable display quality. In addition, when the flexible printed circuit board is cut to form the bent portion and the opening, the bent portion can be used as an input terminal for the power source or the signal, so that the material can be effectively utilized, thereby saving cost. The above and other objects, features, and advantages of the present invention will become more apparent from the understanding of the appended claims. 2 is a cross-sectional view of a backlight module according to an embodiment of the present invention, and FIG. 3 is a partial enlarged view of the backlight module of FIG. 2. Please refer to FIG. 2 and FIG. 2 . The moonlight module 200 includes a frame 21 , a flexible printed circuit board 220 , a plurality of light sources 230 , and a plurality of pins 240 . The flexible printed circuit board 220 8 1352856 95i09 2i296twf.doc/e is disposed on the frame 210. It has a body 22 - an opening 222 and at least one bent portion 224 , wherein the opening 222 is located in the body 221 and the bent portion 224 The body 221 is cut and the opening 222 can accommodate the bent portion 224. In the above, the light source 230 is disposed in the opening 222, and the light source 230 of the embodiment is a light emitting diode. The pins 24 are respectively connected between the light source 23A and the flexible printed circuit board 220 so that the light source 23A can be fixed in the opening 222, and the pin 240 is used to transmit a message to the light source 23〇 to make the light source 230 lights. 4A to 4C are schematic views showing the fabrication flow of the flexible printed circuit board of Fig. 2. Referring to Figs. 4A to 4C in order, in the process of forming the flexible printed circuit board .220 of the present embodiment, the pre-cut area 221a is firstly drawn on the body 221 by using a cutting line. Thereafter, the area 221a' is cut along the cutting line and the cut area 221a is bent to form the opening 222 and the bent portion 224. Then, the light source 230 is placed in the opening 222, and the light source 230 is overlapped with the body 221 of the flexible printed circuit board 22 by the pin 240 to fix the light source 230 in the opening 222. In addition, as shown in FIG. 4C, in order to allow the flexible printed circuit board mo to be electrically connected to other electronic devices or power supplies, the bent portion 224 of the embodiment is further provided with a plurality of signal pads 226, wherein The number of signal pads 226 and the distance between the signal pads 226 are set according to the use requirements. In addition, in order to enable the light source 230 to be fixed to the flexible printed circuit board 220, an adhesive layer 212 such as a double-sided tape or a heat-dissipating adhesive may be attached to one side of the body 221, and the adhesive layer 212 may be used. The flexible printed circuit 9 1352856 95109 21296twf.doc/e board 220 is adhered to the frame 210 to assemble the backlight module 200 of the cost embodiment, as shown in FIG. It is to be noted that since the flexible printed circuit board 220 is disposed on the frame 210, and the frame 210 of the present embodiment is made of metal, and the light source 230 is disposed in the opening 222, when the light source 230 continues to emit light, The light source 230 can effectively remove the heat generated by the frame 21 by conduction, so that the light source 230 is not easily damaged, and its optical characteristics are not easily offset. Compared with the prior art, the backlight module 200 of the embodiment has a light-weighted life. ^ In particular, the bend portion 224 of the present embodiment can extend beyond the frame 21 to enable a converter or other electronic device to be connected to the signal pad 226 as a signal input terminal or a power source. The input end, therefore, the backlight module 200 of the embodiment can effectively utilize materials and save costs. Further, although the bent portion 224 in which the flexible printed circuit board 22 of the present embodiment is cut and bent is an elongated strip shape. In another embodiment, the flexible printed circuit board 220 can also be cut to form a split bend 224, as shown in FIG. In addition, in order to more effectively remove the heat generated by the light source 230, we may also arrange a heat dissipation layer 250 between the light source 230 and the adhesive layer 212 to accelerate the heat generated by the removal of the light source 230, as shown in FIG. Backlight mode shown. · Group 200'. The heat dissipating layer 250 is made of a metal having a high thermal conductivity, preferably in the same manner as the adhesive layer 212. FIG. 7 is a schematic diagram of a display device using the optical module of FIG. 2. FIG. Referring to FIG. 7 , the backlight module 200 and a liquid crystal display panel 3 are assembled to form a display device 400 by using 95109 21296 twf. doc/e. Since the backlight module 200 of the present invention has a good heat dissipation effect of the light source, the light source 230 The optical characteristics are less likely to be offset, and the backlight module 200 can provide light with stable optical characteristics of the liquid crystal display panel 300, thereby allowing the display device 400 to have stable display quality. In addition, in order to provide the backlight module 200 with a uniform surface light source of the liquid crystal display panel 300, an optical film 310 may be disposed between the backlight module 200 and the liquid crystal display panel 300, and the optical film 310 may be a diffusion sheet. , a brightness enhancement sheet, a prism sheet or a combination of these films. In summary, the backlight module of the present invention and the display device using the same have at least the following advantages: 1. The light source is in contact with the metal frame, and the heat dissipation effect of the light source is good, so the optical characteristics of the light source are not easily offset, so that The liquid crystal display device using the backlight module can have stable display quality. 1. The heat dissipation effect of the light source is better than the conventional one, so the backlight module and the liquid crystal display device using the backlight module have a longer service life. —, copy the flexible circuit board originally located at the opening to form a fold %, and use the folded mother part as the input end of the power source or signal to effectively utilize the material, thereby saving costs. Although the present invention has been disclosed in the above-described embodiments, it is not intended to limit the present invention, and any of the (10) tactile stalks have the usual knowledge, and can be changed and retouched without departing from the present invention. Because the protection of the present invention is defined by the application of the fiber