200912467 - 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採用該背光模組之液晶 顯示裝置。 【先前技術】 因應目前手持式電子產品輕薄短小的要求，設於該電 子產品之液晶顯示裝置内部之光源，例如發光二極體 (Light Emitting Diode，LED)或者燈管，基本都是由一軟性 印刷電路板（Flexible Printed Circuit Board, FPCB)所承 載，然後藉由一框架固持，形成一面光源以提供光束至該 液晶顯示裝置之液晶顯示面板。 請一併參閱圖1及圖2，圖1係一種先前技術液晶顯 示裝置之立體組裝示意圖，圖2係圖1所示液晶顯示裝置 之立體分解示意圖。該液晶顯示裝置1包括一框架110、 一反射片120、一導光板130、一擴散片140、一稜鏡片150、 一軟性印刷電路板160、複數發光元件170以及一液晶顯 示面板190。該液晶顯示面板190、該稜鏡片150、該擴散 片140、該導光板130及該反射片120從上至下依次設置。 該複數發光元件170鄰近該導光板130設置。 該框架110係一中空矩形框架，其包括四側壁111， 該四侧壁111圍成一容納部112，在其中一侧壁111鄰近 該容納部112侧之表面設置有複數槽孔113。 該導光板130係一收容於該容納部112之矩形壓克力 平板，其包括一入光面131、一出光面132及一底面133。 6 200912467 - 該出光面132與該底面133相對設置。該入光面131係該 導光板130之其中一側面，且該入光面131同時與該出光 面132及該底面133相鄰。該反射片120鄰近該導光板130 之底面133設置。該擴散片140及該稜鏡片150均係改變 穿過其自身之光線傳輸特性之光學膜片。 該軟性印刷電路板160 —端連接該液晶顯示面板 190，其另一端用於接收來自外部之電源訊號、控制訊號及 顯示訊號等，以控制該液晶顯示裝置1工作。該複數發光 元件170係採用焊接方式直接設置在該軟性印刷電路板 160表面，且與該印刷電路板160電性連接。 再請參閱圖3，係該液晶顯示裝置1組裝完成後之侧 面剖視圖。當該液晶顯示裝置1組裝時，其按照如下步驟 進行： 首先，將該導光板130收容於該框架110之容納部 112,同時設置該反射片120鄰近該導光板130之底面133; 然後，於該導鳥板130之出光面132侧，自下而上依 次疊合設置該擴散片140、該稜鏡片150及該液晶顯示面 板190，其中該軟性印刷電路板160 —端焊接於該液晶顯 示面板190，該發光元件170設於該軟性引刷電路板160 表面； 接著，向下反轉彎折該軟性印刷電路板160之另一 端，使得該複數發光元件170對應收容於該框架110之複 數槽孔113内，且保證該發光元件170之出光方向相對該 導光板130之入光面131。其中，該軟性印刷電路板160 7 200912467 向下彎折並從該框架110之上表面延伸至該框架110之下 表面，包覆該框架110之槽孔113，並利用雙面膠帶之黏 著作用，使該軟性印刷電路板160固定於該框架110之上。 組裝完成後，設置於該軟性印刷電路板160表面之複 數發光元件170位於框架110之槽孔113中，且該複數發 光元件170接收來自該印刷電路板160之控制訊號發光， 該發光元件170採用侧面發光方式將光線導入該導光板 130之入光面131。 此種設計由於該軟性印刷電路板160需要彎折，因此 該軟性印刷電路板160之抗彎折性能必須較低。惟，該抗 彎折性較低之軟性印刷電路板160勢必對該發光元件170 之有效定位造成困難。該軟性印刷電路板160易因震動或 者撞擊引起該發光元件170錯位。因為該發光元件170射 出之光線從該導光板130之入光面131之適當位置入射， 可以有效將該光線導入該導光板13 0並傳輸到該液晶顯不 面板190，所以當該發光元件170錯位時，會造成入射光 線損失，影響該液晶顯示面板190之晝面顯示品質。另， 由於該軟性印刷電路板160係利用膠合方式將該軟性電路 板160與該框架110結合，因此，粘著劑必須夠黏以防止 該軟性電路板160回彈***，如此，對製造工序提出嚴格 要求，增加製程成本。 【發明内容】 有鑑於此，有必要提供一種出光效果穩定、組裝方便 之背光模組。 8 200912467 置 還有必要提供-種採用上述f光模組之液晶顯示裝 :種背光模組，其包括—具硬性區域之印刷電路板、 固叹於該硬性區域之發光元件一 勒士 仏^ 、. 卞及 v先板，該硬性區域 乂成一收谷該導光板之收容空間。 改拓费W· 4 U Θ 士尤疋件與該印刷電 板電性連接，該導光板相鄰該發光元件。 光板組’其包括—導光板、—支撐並收容該導 3連;發=:固設於該r區域，並與該印刷電二 & X光兀件與該導光板之相對位置固定。 板及示二，其包括相鄰設置之-液晶顯示面 =該背光模組包括—具硬性區域之印刷電 性巴於該硬性區域之發光元件及—導光板，該硬 印刷-_連接，該導光發=:元件與該 之液曰：液：顯不裝置，其包括相鄰設置之-具放電電路 板之印刷電路板及-發光元件。該印刷 料&域’該發光儿件固設於該硬性區域’並 位置固定。 ㈣3發先兀件與該導光板之相對 兩路ttf前技術’在本發明之背光模組中，將該印刷 區域錢純容請魏容科光板，可替 換膠框專固持元件’減少組裝元件。同時將 = 200912467 =該印刷電路板之硬性區域’因該硬性區域具較好之抗 二/生，所以有效保證該發光元件與該導光板之相對固 疋，避免該發光元件與該導光板間之相對位置發生變化， ，而可獲得之光學效果。料，因為利用該印刷電路 板之軟性區域與該硬性區域相互電性連接，所以該軟性區 域不用另外採用枯著劑等來辅助㈣該軟性區域，該印刷 電路板直接有效固持整個背光模組，方便組裝。 【實施方式】 請參閱圖4,係本發明液晶顯示裝置一較佳實施方式 之立體分解示意圖。該液晶顯示裝置2包括一背光模組 2〇、一液晶顯示面板40及一框架42。該框架形成一收 容空間（未標示），該背光模組2〇與該液晶顯示面板4〇疊 合設置並收容於該框架42之收容空間内。該背光模組2〇 提供光線至該液晶顯示面板4〇以顯示晝面，該框架42固 持該背光模組20及該液晶顯示面板4〇。 請參閱圖5,係圖4所示液晶顯示襄置2之背光模組 20之立體分解示意圖。該背光模組2〇包括—擴散片μ、 -稜鏡片27、-導光板23、-印刷電路板21、一反射片 22及複數發光元件25。該擴散片29、該稜鏡片27、該導 光板23、該印刷電路板21及該反射片22從上至下依次設 置。該複數發光元件25鄰近該導光板23設置。 該印刷電路.板21係—軟硬結合式印刷電路板 (Flexible/Rigid Prmted Circuit Board)，軟硬結合式印刷電 路板通常係將軟性電路板部份壓合於硬性電路板（Rigid 200912467 -Printed Circuit Board)之層狀結構之間，併從硬性電路板延 伸出之連接方式，把軟性電路板與硬性電路板整合爲一 體。其中，該軟性電路板與該硬性電路板之導電圖案層電 性連接，該印刷電路板21兼具有軟性電路板與硬性電路板 之特性。該印刷電路板21包括相互電性連接之一硬性區域 211及一軟性區域215，該硬性區域211係採用硬性電路板 製得，該軟性區域215係採用軟性電路板製得。 該硬性區域211之結構如圖6所示。該硬性區域211 包括一基膜層2110、複數導電圖案層21Π、複數樹脂加強 層2112及絕緣保護層2113壓合而成之具一定抗彎折性之 複數壓合層。該導電圖案層2111係由一壓延銅層形成。該 侧壁213之上表面設置有一接地端2114，該接地端2114 與該導電圖案層2111之一接地線電性連接。該硬性區域 211係一具收容空間212之框體結構，該框體結構之四侧 壁213均係由該壓合層直接形成，其包括複數凹槽214及 複數卡槽（未標示）'該複數凹槽214位於該侧壁213内側 '且鄰近該軟性區域215，該複數卡槽位於相鄰該軟性區域 215之二相對侧壁213。該框體結構之侧壁213内表面同時 設置具反射功能之反射材質（未標示），該反射材質可為摻 雜銀或銘等材質之高反射率鍍膜。 該軟性區域215之結構如圖7所示。該軟性區域215 係由一導電圖案層2151形成在一可撓性基膜2150表面而 形成，其中該軟性區域215之導電圖案層2151與該硬性區 域211之導電圖案層2111對應電性連接。 11 200912467 該導光板23係一矩形壓克力平板，其包括一入光面 231、一出光面232 —底面233、二相對侧面（未標示）及複 數凸塊（未標示）。該出光面232與該底面233相對設置， 該入光面231係該導光板23之其中一側面，且同時與該出 光面232及該底面233相鄰。該二相對侧面相鄰該入光面 231，且均位於該出光面232與該底面233間。該複數凸塊 分別自該二相對側面向外延伸，並分別對應於該硬性區域 211之複數卡槽。即，該複數凸塊可分別卡合收容於該複 數卡槽以將該導光板23收容於該印刷電路板21之硬性區 域211之收容空間212内。 該反射片22係一具反射功能之光學薄膜，其鄰近該導 光板23之底面233設置，並使得該印刷電路板21與其他 外接元件相隔離。該稜鏡片27及該擴散片29係改善穿過 其自身光線光學特性之光學薄膜。該棱鏡片27及該擴散片 29自下而上依次疊設於該導光板23之出光面232外侧。 該複數發光元件25均係發光二極體，其對應收容於該 硬性區域211之複數凹槽214内，並臨近該導光板23之入 光面231。該發光元件25之電極（圖未示）對應與該印刷電 路板21之硬性區域211之導電圖案層2111電性連接。該 發光元件25可以是採用薄膜覆晶技術設置於該印刷電路 板21，還可以是通過異方性導電膜（Anisotropic Conductive Film, ACF)焊接或者條帶自動黏接技術而實現與該印刷電 路板21之電性連接。 該液晶顯示面板40係一顯示終端，其疊設於該背光模 12 200912467 組20之擴散片29外側。該液晶顯示面板4〇包括一靜電放 電電路（圖未示）’該靜電放電電路之輸出端鄰近該液晶顯 ::板4〇之邊緣位置設置。當該液晶顯示面板40與該背 光松、'且2G組裝在—起時，該液晶顯示面板扣與該印刷電 路板21硬性區域211之㈣213相抵接，使得該靜電放電 電路之輸出端與位於該侧壁213之接地端2114對應電性連 接0 請-併參閱圖8,係圖4所示液晶顯示裝置2之立體 組裝不意圖。在該液晶顯示裝置2之組裝過程中，i首先 2由溥膜彳 1晶技術、異方㈣電膜焊接或 技術將該發光元件25設置在該硬性區域2ii之凹槽= 内，且該發光元# 25與該印刷電路才反21電性連接。缺 ^該導光板f對應卡合收容於該印刷電路板21之收容空 2曰5^發"該導光/反23之入光面231鄰近該發光元件 接者，於該導光板23之底面233側設置 該反射片22，於該導， 铲K 97、姑被Λ •先板23之出光面232 —侧設置該稜 ^顯-面:29及該液晶顯示面板4〇，並使得該液 21之接地端2114電 =連接之輸出端與該印刷電路板 §该液晶顯示梦罢9 士 區域215接收外界^電 $ =刷電路板21之軟性 硬性區域211。該硬訊號等’並傳輪至該 件25並_發光元件25發光。該電導= 虎元 -接收該發光元件25產生之光線，並藉由散射之 13 200912467 導引光線自該導光板23之出光面232出射。自該導光板 23之出光面232射出之光線，穿過該稜鏡片27及該擴散 片29後提供至該液晶顯示面板40。其中該液晶顯示面板 40藉由該印刷電路板21之接地端2114接地，避免靜電累 積。 相較於先前技術，本發明之液晶顯示裝置2中，該硬 行區域211為具收容空間212之框形，其收容該導光板 23，可替換膠框等固持元件，減少組裝元件。同時，該發 光元件25固定設置在該印刷電路板21具較好之抗彎折性 之硬性區域2Π，可避免該發光元件25與該導光板23之 入光面231間之相對位置發生變化，從而可獲得預期之光 學效果。 另，因為該液晶顯示面板40表面通常設置有複數導電 線路，為避免靜電累積造成對該液晶顯示面板40之破壞， 於該液晶顯示面板40之邊緣位置設置靜電放電電路，快速 釋放靜電。在該液鬲顯示裝置2中，於該印刷電路板21 之硬性區域211上設置接地端2114，當疊合設置該液晶顯 示面板40於該背光模組20時，將該液晶顯示面板40之靜 電放電電路之輸出端直接與該硬性區域211之接地端2114 對應電性連接，以釋放靜電，避免靜電累積造成對該液晶 顯示面板40之破壞，提高該液晶顯示裝置2之可靠性。同 時該反射片22間隔該印刷電路板21及外殼等其他元件， 避免該印刷電路板21本身短路。 綜上所述，本發明確已符合發明專利之要件，爰依法 14 200912467 提出專利申請。惟，以上所述者僅為本發明之較佳實施例， 本發明之範圍並不以上述實施例為 之人士援依本發明之精神所作之等 蓋於以下申睛專利範圍内。 限，舉凡熟悉本案技藝 效修飾或變化’皆應涵 15 200912467 【圖式簡單說明】 圖1係一種先前技術液晶顯示裝置之立體組裝示意圖。 圖2係圖1所示液晶顯示裝置之立體分解示意圖。 圖3係圖1所示液晶顯示裝置之側面剖視圖。 圖4係本發明液晶顯示裝置一較佳實施方式之立體分解示 意圖。 图5係圖4所示液晶顯示裝置之背光模組之立體分解示意 圖。 圖6係圖5所不背光模組之印刷電路板之硬性區域結構不意 圖。 圖7係圖5所示背光模組之印刷電路板之軟性區域結構示意 圖。 圖8係圖4所示液晶顯示裝置之立體組裝示意圖。 【主要元件符號說明】 液晶顯不裝置 2可撓性基膜 2150 背光模組 20反射片 22 印刷電路板 21導光板 23 硬性區域 211入光面 231 基膜層 2110出光面 232 導電圖案層 2111、2151 底面 233 樹脂加強層 2112發光元件 25 絕緣保護層 2113稜鏡片 27 接地端 2114擴散片 29 收容空間 212液晶顯不面板 40 16 200912467 側壁 凹槽 軟性區域 213靜電放電電路輸出端 214框架 215 41 42 17200912467 - IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a liquid crystal display device using the same. [Prior Art] In view of the current requirements of thin and light hand-held electronic products, a light source, such as a light emitting diode (LED) or a lamp, which is disposed inside the liquid crystal display device of the electronic product, is basically made of a soft one. A flexible printed circuit board (FPCB) is carried by the frame, and then held by a frame to form a light source to provide a light beam to the liquid crystal display panel of the liquid crystal display device. 1 and FIG. 2, FIG. 1 is a perspective assembled view of a prior art liquid crystal display device, and FIG. 2 is a perspective exploded view of the liquid crystal display device shown in FIG. 1. The liquid crystal display device 1 includes a frame 110, a reflective sheet 120, a light guide plate 130, a diffusion sheet 140, a cymbal sheet 150, a flexible printed circuit board 160, a plurality of light-emitting elements 170, and a liquid crystal display panel 190. The liquid crystal display panel 190, the cymbal 150, the diffusion sheet 140, the light guide plate 130, and the reflection sheet 120 are disposed in order from top to bottom. The plurality of light emitting elements 170 are disposed adjacent to the light guide plate 130. The frame 110 is a hollow rectangular frame, and includes four side walls 111. The four side walls 111 define a receiving portion 112. A plurality of slots 113 are disposed in a surface of a side wall 111 adjacent to the receiving portion 112 side. The light guide plate 130 is a rectangular acrylic plate received in the receiving portion 112. The light guide plate 130 includes a light incident surface 131, a light exit surface 132 and a bottom surface 133. 6 200912467 - The light exit surface 132 is disposed opposite the bottom surface 133. The light incident surface 131 is one of the side surfaces of the light guide plate 130, and the light incident surface 131 is adjacent to the light exit surface 132 and the bottom surface 133 at the same time. The reflective sheet 120 is disposed adjacent to the bottom surface 133 of the light guide plate 130. Both the diffusion sheet 140 and the cymbal sheet 150 are optical films that change their light transmission characteristics. The flexible printed circuit board 160 is connected to the liquid crystal display panel 190 at the other end, and is configured to receive power signals, control signals, and display signals from the outside to control the operation of the liquid crystal display device 1. The plurality of light-emitting elements 170 are directly disposed on the surface of the flexible printed circuit board 160 by soldering, and are electrically connected to the printed circuit board 160. Referring to Fig. 3, there is shown a side cross-sectional view of the liquid crystal display device 1 after assembly. When the liquid crystal display device 1 is assembled, it is performed as follows: First, the light guide plate 130 is received in the receiving portion 112 of the frame 110, and the reflective sheet 120 is disposed adjacent to the bottom surface 133 of the light guide plate 130; The diffusing plate 140, the cymbal 150 and the liquid crystal display panel 190 are disposed in this order from the bottom to the top of the light-emitting surface 132 of the bird guiding plate 130. The flexible printed circuit board 160 is soldered to the liquid crystal display panel. 190, the light-emitting element 170 is disposed on the surface of the flexible brushing circuit board 160; then, the other end of the flexible printed circuit board 160 is reversely bent downward, so that the plurality of light-emitting elements 170 are correspondingly received in the plurality of slots of the frame 110. 113, and ensure that the light emitting direction of the light emitting element 170 is opposite to the light incident surface 131 of the light guide plate 130. Wherein, the flexible printed circuit board 160 7 200912467 is bent downward and extends from the upper surface of the frame 110 to the lower surface of the frame 110, covering the slot 113 of the frame 110, and utilizing the adhesive effect of the double-sided tape, The flexible printed circuit board 160 is secured to the frame 110. After the assembly is completed, the plurality of light-emitting elements 170 disposed on the surface of the flexible printed circuit board 160 are located in the slots 113 of the frame 110, and the plurality of light-emitting elements 170 receive control signal illumination from the printed circuit board 160. The side light emitting mode introduces light into the light incident surface 131 of the light guide plate 130. In this design, since the flexible printed circuit board 160 needs to be bent, the flexural performance of the flexible printed circuit board 160 must be low. However, the flexible printed circuit board 160 having a low bending resistance tends to cause difficulty in effectively positioning the light-emitting element 170. The flexible printed circuit board 160 is susceptible to misalignment of the light-emitting element 170 due to vibration or impact. Since the light emitted from the light-emitting element 170 is incident from an appropriate position of the light-incident surface 131 of the light guide plate 130, the light can be efficiently guided to the light guide plate 130 and transmitted to the liquid crystal display panel 190, so that the light-emitting element 170 is used. When the position is misaligned, the incident light is lost, which affects the display quality of the liquid crystal display panel 190. In addition, since the flexible printed circuit board 160 is bonded to the frame 110 by gluing, the adhesive must be adhered to prevent the flexible circuit board 160 from rebounding, thus, the manufacturing process is proposed. Strict requirements, increase process costs. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a backlight module with stable light-emitting effect and convenient assembly. 8 200912467 It is also necessary to provide a liquid crystal display device using the above-mentioned f-light module: a backlight module comprising: a printed circuit board having a hard region, and a light-emitting element sighing in the hard region. , 卞 and v first board, the hard area is turned into a receiving space of the light guide plate. The retrofit fee W· 4 U Θ 疋 疋 is electrically connected to the printed circuit board, the light guide plate being adjacent to the light-emitting element. The light panel group includes a light guide plate, and supports and houses the conductor; the hair=: is fixed in the r region, and is fixed to a position opposite to the printed electric light and the light guide plate. The board and the second embodiment include an adjacently disposed liquid crystal display surface. The backlight module includes a light-emitting element having a hard-area printed electrical area and the light-guide plate, and the hard-printing- Light guide =: component and liquid 曰: liquid: display device, which comprises a printed circuit board with a discharge circuit board and a light-emitting element disposed adjacently. The printed material &field' is fixed to the rigid region' and is fixed in position. (4) The 3 faucet and the light guide plate are opposite to each other. In the backlight module of the present invention, the printing area is purely available to the Wei Rongke light board, and the plastic frame can be replaced by the component to reduce the assembled components. At the same time, it will be = 200912467 = the hard region of the printed circuit board is better resistant to the secondary region due to the hard region, so that the relative solidity of the light-emitting element and the light guide plate is effectively ensured, and the light-emitting element and the light guide plate are avoided. The relative position changes, and the optical effect is obtained. Because the soft region of the printed circuit board and the hard region are electrically connected to each other, the soft region does not need to use a cleaning agent or the like to assist the (four) soft region, and the printed circuit board directly holds the entire backlight module. Easy to assemble. [Embodiment] Please refer to FIG. 4, which is a perspective exploded view of a preferred embodiment of a liquid crystal display device of the present invention. The liquid crystal display device 2 includes a backlight module 2A, a liquid crystal display panel 40, and a frame 42. The frame is formed in a receiving space (not shown), and the backlight module 2 is disposed in the receiving space of the frame 42 and is disposed in the receiving space of the frame 42. The backlight module 2 〇 provides light to the liquid crystal display panel 4 to display a side surface, and the frame 42 holds the backlight module 20 and the liquid crystal display panel 4 . Referring to FIG. 5, a perspective exploded view of the backlight module 20 of the liquid crystal display device 2 shown in FIG. The backlight module 2 includes a diffusion sheet μ, a cymbal sheet 27, a light guide plate 23, a printed circuit board 21, a reflection sheet 22, and a plurality of light-emitting elements 25. The diffusion sheet 29, the cymbal sheet 27, the light guide plate 23, the printed circuit board 21, and the reflection sheet 22 are sequentially disposed from top to bottom. The plurality of light-emitting elements 25 are disposed adjacent to the light guide plate 23. The printed circuit board 21 is a Flexible/Rigid Prmted Circuit Board. The soft and hard printed circuit board usually presses the flexible circuit board part to the rigid circuit board (Rigid 200912467 -Printed) Circuit Board) The connection between the layered structures and the rigid circuit board integrates the flexible circuit board and the rigid circuit board. The flexible circuit board is electrically connected to the conductive pattern layer of the rigid circuit board, and the printed circuit board 21 has the characteristics of a flexible circuit board and a rigid circuit board. The printed circuit board 21 includes a hard region 211 and a flexible region 215 electrically connected to each other. The rigid region 211 is made of a rigid circuit board, and the flexible region 215 is made of a flexible circuit board. The structure of the rigid region 211 is as shown in FIG. 6. The hard region 211 includes a base film layer 2110, a plurality of conductive pattern layers 21, a plurality of resin reinforcing layers 2112, and an insulating protective layer 2113 which are pressed together to form a plurality of press-bonding layers having a certain degree of bending resistance. The conductive pattern layer 2111 is formed of a rolled copper layer. A grounding end 2114 is disposed on the upper surface of the sidewall 213. The grounding end 2114 is electrically connected to a grounding line of the conductive pattern layer 2111. The rigid region 211 is a frame structure having a receiving space 212. The four sidewalls 213 of the frame structure are directly formed by the pressing layer, and include a plurality of grooves 214 and a plurality of card slots (not labeled). The plurality of recesses 214 are located inside the sidewall 213 and adjacent to the flexible region 215 . The plurality of slots are located adjacent to the opposite sidewalls 213 of the flexible region 215 . The inner surface of the side wall 213 of the frame structure is simultaneously provided with a reflective material (not labeled) having a reflective function, and the reflective material may be a high reflectivity coating made of a material such as silver or m. The structure of the soft region 215 is as shown in FIG. The flexible region 215 is formed by forming a conductive pattern layer 2151 on the surface of the flexible base film 2150. The conductive pattern layer 2151 of the flexible region 215 is electrically connected to the conductive pattern layer 2111 of the rigid region 211. 11 200912467 The light guide plate 23 is a rectangular acrylic plate, which comprises a light incident surface 231, a light exit surface 232 - a bottom surface 233, two opposite sides (not shown) and a plurality of bumps (not labeled). The light-emitting surface 232 is disposed opposite to the bottom surface 233. The light-incident surface 231 is one of the side surfaces of the light guide plate 23 and is adjacent to the light-emitting surface 232 and the bottom surface 233. The two opposite sides are adjacent to the light incident surface 231, and are located between the light emitting surface 232 and the bottom surface 233. The plurality of bumps extend outward from the opposite sides of the plurality of bumps and respectively correspond to the plurality of card slots of the rigid region 211. That is, the plurality of bumps can be respectively received and received in the plurality of card slots to receive the light guide plate 23 in the receiving space 212 of the rigid region 211 of the printed circuit board 21. The reflective sheet 22 is a reflective optical film disposed adjacent to the bottom surface 233 of the light guide plate 23 and isolating the printed circuit board 21 from other external components. The bracts 27 and the diffuser 29 are optical films that improve the optical properties of their own light. The prism sheet 27 and the diffusion sheet 29 are stacked on the outside of the light-emitting surface 232 of the light guide plate 23 in this order from bottom to top. The plurality of light-emitting elements 25 are both light-emitting diodes corresponding to the plurality of grooves 214 of the rigid region 211 and adjacent to the light-incident surface 231 of the light guide plate 23. An electrode (not shown) of the light-emitting element 25 is electrically connected to the conductive pattern layer 2111 of the hard region 211 of the printed circuit board 21. The light-emitting element 25 may be disposed on the printed circuit board 21 by using a film flip chip technology, or may be realized by an anisotropic conductive film (ACF) soldering or strip automatic bonding technology. 21 electrical connection. The liquid crystal display panel 40 is a display terminal that is stacked on the outside of the diffusion sheet 29 of the group 20 of the backlight module 12 200912467. The liquid crystal display panel 4A includes an electrostatic discharge circuit (not shown). The output end of the electrostatic discharge circuit is disposed adjacent to an edge of the liquid crystal display panel. When the liquid crystal display panel 40 and the backlight are loose, and the 2G is assembled, the liquid crystal display panel buckle abuts the (four) 213 of the hard region 211 of the printed circuit board 21, so that the output end of the electrostatic discharge circuit is located at The grounding end 2114 of the side wall 213 corresponds to the electrical connection. Please refer to FIG. 8. The three-dimensional assembly of the liquid crystal display device 2 shown in FIG. 4 is not intended. In the assembly process of the liquid crystal display device 2, i firstly sets the light-emitting element 25 in the recess== of the hard region 2ii by the 溥 film 彳1 crystal technology, the heterotetrazed film welding or the technique, and the illuminating Yuan #25 is electrically connected to the printed circuit. The light guide plate f is correspondingly engaged with the receiving space of the printed circuit board 21; the light incident surface 231 of the light guide/reverse 23 is adjacent to the light emitting element, and the light guide plate 23 is The reflective sheet 22 is disposed on the bottom surface 233 side, and the ridge K 97 and the light-emitting surface 232 of the front panel 23 are disposed on the side of the light-emitting surface 232 of the front panel 23, and the liquid crystal display panel 4 is disposed. The ground terminal 2114 of the liquid 21 = the output end of the connection with the printed circuit board § the liquid crystal display dream zone 215 receives the external ^ electricity $ = the soft hard area 211 of the brush circuit board 21. The hard signal or the like is transmitted to the member 25 and the light-emitting element 25 emits light. The conductance = tiger element - receives the light generated by the light-emitting element 25, and emits light from the light-emitting surface 232 of the light guide plate 23 by scattering 13 200912467. Light emitted from the light-emitting surface 232 of the light guide plate 23 passes through the cymbal sheet 27 and the diffusion sheet 29, and is supplied to the liquid crystal display panel 40. The liquid crystal display panel 40 is grounded by the grounding end 2114 of the printed circuit board 21 to avoid static electricity accumulation. Compared with the prior art, in the liquid crystal display device 2 of the present invention, the hard-line region 211 has a frame shape with a receiving space 212, and the light guide plate 23 is accommodated, and the holding member such as a plastic frame can be replaced to reduce the assembled components. At the same time, the light-emitting element 25 is fixedly disposed on the printed circuit board 21 with a good bending resistance, and the relative position between the light-emitting element 25 and the light-incident surface 231 of the light guide plate 23 is prevented from changing. Thereby the desired optical effect can be obtained. In addition, since the surface of the liquid crystal display panel 40 is usually provided with a plurality of conductive lines, in order to avoid damage to the liquid crystal display panel 40 caused by static electricity accumulation, an electrostatic discharge circuit is disposed at an edge of the liquid crystal display panel 40 to quickly discharge static electricity. In the liquid helium display device 2, a grounding end 2114 is disposed on the hard region 211 of the printed circuit board 21, and when the liquid crystal display panel 40 is superposed on the backlight module 20, the static electricity of the liquid crystal display panel 40 is The output end of the discharge circuit is electrically connected to the ground end 2114 of the hard region 211 to discharge static electricity to prevent the static electricity from being damaged by the liquid crystal display panel 40, thereby improving the reliability of the liquid crystal display device 2. At the same time, the reflection sheet 22 is spaced apart from the printed circuit board 21 and other components such as the casing to prevent the printed circuit board 21 itself from being short-circuited. In summary, the present invention has indeed met the requirements of the invention patent, and filed a patent application according to law 14 200912467. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited by the above-mentioned embodiments. Limitations, all of which are familiar with the technical modification or change of the case ‘ all should be 15 200912467 [Simplified description of the drawings] Fig. 1 is a schematic perspective view of a prior art liquid crystal display device. 2 is a perspective exploded view of the liquid crystal display device shown in FIG. 1. Figure 3 is a side cross-sectional view showing the liquid crystal display device of Figure 1. Fig. 4 is a perspective exploded view of a preferred embodiment of the liquid crystal display device of the present invention. Fig. 5 is a perspective exploded view showing the backlight module of the liquid crystal display device shown in Fig. 4. Fig. 6 is a diagram showing the hard area structure of the printed circuit board of the backlight module of Fig. 5. Fig. 7 is a view showing the structure of a soft region of a printed circuit board of the backlight module shown in Fig. 5. FIG. 8 is a schematic perspective view of the liquid crystal display device shown in FIG. 4. FIG. [Main component symbol description] LCD display device 2 flexible base film 2150 backlight module 20 reflective sheet 22 printed circuit board 21 light guide plate 23 rigid region 211 light incident surface 231 base film layer 2110 light emitting surface 232 conductive pattern layer 2111 2151 bottom surface 233 resin reinforcement layer 2112 light-emitting element 25 insulation protection layer 2113 diaphragm 27 ground terminal 2114 diffusion sheet 29 housing space 212 liquid crystal display panel 40 16 200912467 sidewall groove soft region 213 electrostatic discharge circuit output terminal 214 frame 215 41 42 17