201037414 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光源模組，且特別是有關於一種 無光源反射罩之背光模組(Backlight Module)及其在液晶顯 示器（LCD)上的應用。 【先前技術】 ^ 背光模組為液晶顯示器等平面顯示裝置的重要構件。 一般而言，在一平面顯示裝置中，背光模組通常係設置在 顯示面板之背面，以提供背光源予顯示面板，來進行晝面 顯示。 請參照第1圖，其係繪示一種傳統背光模組之裝置示 意圖。背光模組100主要包含背板106、導光板108、發光 二極體光條112、膠框114、光學膜片116、反射片118與 光源反射罩122。背板106通常係由金屬板件所構成，其 〇 中背板106之結構一般可呈板狀結構，或為減少背光模組 之重量而可呈框狀結構。背板106通常可由底板102與側 板104所組成，其中側板104立設於底板102之一側邊上。 光源反射罩122之剖面結構一般呈類门字型，而發光二極 體光條112則設置在光源反射罩122中，且固定於光源反 射罩122之一内側面上，因而光源反射罩122可將發光二 極體光條112朝背光模組100外側所發出之光朝背光模組 . 之内部反射。發光二極體光條112主要係由數個發光二極 . 體(未繪示）與電路板120所組成，其中這些發光二極體固 定在電路板120上，並與電路板120電性連接。光源反射 4 201037414 罩122連同固設於其内之發光二極體光條112固定在背板 、 106之側板的内側面上。 反射片118設置在背板106之底板102的上方，導光 板108則設置在反射片118上，其中導光板1〇8之外緣區 夾設在光源反射罩122之間，且發光二極體光條η]之發 光二極體的出光面與導光板108之入光面11〇相面對。膠 框114則設置在光源反射罩122與背板106之上，且與光 源反射罩122及背板106之侧板104接合。光學膜片116 ❹ 則覆蓋在導光板108之上，以增進背光模組1〇〇之光學效 果。 然而，在目前的背光模組中，其組裝過程均需先將發 光二極體光條固定在光源反射罩中，再將光源反射罩固定 在背板上，然後再將膠框設置並固定在光源反射罩與背板 之上。因此，整個發光二極體光條的組裝相當繁瑣耗時， 不利於背光模組的製作。 〇 【發明内容】 因此，本發明之一態樣是在提供一種背光模組及其應 用之液晶顯示器’其可直接將點光源光條，例如發光二極 體光條(LED Light Bar)喪入外框之侧壁中，故可省掉傳統 背光模組中之光源反射罩，而可減輕背光模組之重量，且 可提升背光模組之組裝的便利性。 • 本發明之另一態樣就是在提供一種背光模組及其應用 之液晶顯示器，其可無需使用光源反射罩，因此可降低背 光模組之製作成本。 5 201037414 本發明之又一態樣就是在提供一種背光模組及其應用 之液晶顯示器，其可藉由控制外框之厚度，來調整發光二 極體光條等點光源光條之點光源的出光面與導光板之入光 面之間的距離，藉此可調整發光二極體等點光源之混光距 離，因而可減少背光模組之熱點（Hot Spot)現象。 根據本發明之上述目的，提出一種背光模組，至少包 含：一外框包含一第一側壁、一第二側壁與一第三側壁， 其中第一側壁與第三側壁分別接合在第二側壁之相對二側 0 且彼此面對，第二側壁設有至少一凹槽，且此至少一凹槽 包含複數個開口貫穿第二側壁；至少一點光源光條設置在 前述至少一凹槽中，其中此至少一點光源光條至少包括： 一電路板；以及複數個點光源設置在電路板上且與電路板 電性連接，其中這些點光源對應設置在前述凹槽之開口 中；以及一導光板，至少包含一入光面，其中導光板之外 緣夾設在第一側壁與第三側壁之間，且每一點光源之出光 面與導光板之入光面相對。 Q 依據本發明之一實施例，上述之點光源光條係一發光 二極體光條。 依據本發明之另一實施例，上述之電路板可為硬性之 印刷電路板(PCB)或軟性電路板。 依據本發明之又一實施例，上述之凹槽的寬度可小於 或等於第二側壁之寬度。 根據本發明之上述目的，更提出一種液晶顯示器，至 ’ 少包含：一液晶顯示面板、以及一背光模組設於液晶顯示 ' 面板之背面。其中，此背光模組至少包含：一外框包含第 6 201037414 一側壁、第二側壁與第三側壁，其中第一側壁與第三侧壁 ’分別接合在第二側壁之相對二側且彼此面對，第二側壁設 有至少一凹槽，且此至少一凹槽包含複數個開口貫穿第二 側壁；至少一點光源光條設置在前述之至少一凹槽中，其 中此至少一點光源光條至少包括：一電路板；以及複數個 點光源設置在電路板上且與電路板電性連接，其中這些點 光源對應設置在該些開口中；以及一導光板至少包含一入 光面，其中此導光板之外緣夾設在前述外框之第一侧壁與 0 第三侧壁之間，且每一點光源之出光面與入光面相對。 依據本發明一實施例，上述之光源光條可嵌設固定、 卡固、鎖固或黏貼在外框之第二側壁的凹槽中。 運用本發明之外框，可使點光源光條直接固定在外框 側壁之凹槽中，而無須額外採用光源反射罩，因此可減少 背光模組之零組件，且可簡化背光模組之組裝程序，而可 縮短背光模組之組裝時間。此外，更可藉由調整外框之側 壁的厚度，來調整點光源之混光距離，進而可消減或避免 Q 背光模組之入光側的熱點現象。 【實施方式】 請參照第2圖與第3圖，其中第2圖係繪示依照本發 明一實施方式的一種液晶顯示器之裝置示意圖，第3圖則 係繪示依照本發明一實施方式的一種背光模組之點光源光 條的裝置示意圖。液晶顯示器200主要包含液晶顯示面板 ' 202與背光模組204，其中背光模組204設置在液晶顯示面 ' 板202之背面，以提供液晶顯示面板202背光源。在一示 7 201037414 範實施例中，背光模組204至少包含外框206、一或多個 點光源光條210以及導光板208。外框206之材料可為塑 膠，例如高折射率塑膠，或金屬材料，且可例如利用射出 成型技術或沖壓成型技術所製作而成。因此，外框206可 為一體成型結構。此外，外框206之材質較佳係選用高反 射材料，以利將點光源光條210所發出之光反設置導光板 208。 如第2圖所示，外框206可例如包含第一侧壁214、 第二側壁218與第三側壁216，其中第一側壁214與第三 側壁216分別接合在第二侧壁218之相對二侧，且第一侧 壁214與第三側壁216彼此相面對。在一實施例中，第二 側壁218包含至少一凹槽212，其中此凹槽212凹設於第 二侧壁218之外侧面。在一示範實施例中，凹槽212僅橫 向延伸在外框206之第二側壁218的一部分中，因此凹槽 212之寬度小於第二側壁218之寬度。在另一示範實施例 中，凹槽212可橫向延伸在外框206之整個第二側壁218 中，因此凹槽212與第二側壁218等寬。 在本發明之實施例中，外框206之第二側壁218的凹 槽212數量可與背光模組204之點光源光條210的數量相 等，且凹槽212之形狀可與點光源光條210之形狀實質相 同，而凹槽212之尺寸可較點光源光條210之尺寸略大， 以利裝設與容置點光源光條210。舉例而言，當背光模組 204包含二個點光源光條210時，外框206之相對二邊， 例如上下二邊或左右二邊，或者相鄰二邊的第二側壁218 的外侧面可設有二凹槽212,以分別容置此二點光源光條 8 201037414 • 210。在另一例子中，當背光模組2〇4包含四個點光源光條 210時，外框206之四邊的第二側壁218的外側面可設有 四個凹槽212 ’以分別容置這四個點光源光條21〇。 如第3圖所示’外框2〇6之第二侧壁218的每個凹槽 212更包含數個開口 228，其中這些開口 228可位於凹槽 212之槽底且貫穿第二側壁218。凹槽212内之開口 228的 數量可例如與設置於凹槽212之點光源光條210上之點光 源224的數量相同，當然凹槽212内之開口 228的數量亦 〇 可大於點光源光條210上之點光源224的數量。此外，凹 槽212内之開口 228的尺寸約略大於點光源光條21〇上之 點光源224的尺寸，以利容置點光源224。 如第2圖所示，點光源光條21〇係設置在外框206之 第二側壁218的凹槽212内。在一些例子中，點光源光條 210可利用與外框206之凹槽212間的緊配合而直接嵌設 固定在外框206之第二側壁218的凹槽212中，或者可利 用雙面膠帶或黏著膠膜而黏貼固定在第二侧壁218的凹槽 〇 212中’亦或者可利用例如螺絲等鎖固元件而鎖固在第二 侧壁218的凹槽212中。在一例子中，請參照第4圖，背 光模組204a之外框206a之第二側壁218的凹槽212的相 對二側邊’例如上下二側邊，分別設有卡固片238與236， 其中此二卡固片238與236可略微凸出於凹槽212側邊而 延伸進入部分之凹槽212。藉由此二卡固片238與236，可 將設置在外框2〇6a之凹槽212内的點光源光條210有效卡 * 固住。在—示範實施例中，卡固片238與236鄰近於凹槽 212之側邊分別具有斜導面242與240,以利導引點光源光 9 201037414 條210進入凹槽212中。 請參照第3圖’點光源光條210主要包含電路板226 與數個點光源224 ’其中這些點光源224設置並固定在電 路板226 ’且這些點光源224與預設在電路板226上的電 路電性連接。在一示範實施例中，這些點光源224可例如 為發光二極體’而點光源光條210可例如為發光二極體光 條。電路板226可為例如硬性之印刷電路板或軟性電路 板。當點光源光條210設置在外框206之第二侧壁218的 0 凹槽212中時’其點光源224分別位於凹槽212之開口 228 中，且點光源224之出光面232由第二側壁218之開口 228 所暴露出。 如第2圖所示’外框206圍設在導光板208之外周緣， 且導光板208之外緣可選擇性地夾設在外框206之第一側 壁214與第三側壁216之間。請同時參照第2圖與第3圖， 導光板208與點光源光條210相鄰之一側具有入光面230’ 而點光源光條210之每個點光源224的出光面232與導光 ❹ 板208之入光面230相面對，以使點光源224從出光面232 所發出之光直接經由導光板208之入光面230而射入導光 板 208。 藉由在外框206上進行結構設計，可使點光源光條 直接嵌設在外框206之凹槽212中，因此無須額外設Ϊ傳 統光源反射罩。故，可減少背光模組204之零組件，立$ 減輕背光模組204之重量，更可簡化背光模組204之組裝’ 達到提咼產能與降低製作成本的效果。 ' 請參照第5圖，其係纟會示依照本發明一實施方式的一 201037414 Ο 種背光模組之點光源光條與導光板之間的裝置示意圖。在 背光模組204中，藉由調整外框206之第二側壁218的厚 度，可調整點光源光條210之點光源224的出光面232與 導光板208之入光面230之間的距離L，可藉此調控點光 源224之混光距離Lm ’如此一來可大幅改善背光模組 之熱點現象。此外’在外框206之第二側壁218具有足夠 厚度的情況下’更可藉由改變介於點光源224之出光面232 與導光板208之入光面230間的開口 228側面244與出光 面232之間的夾角0夾角Θ大於90度，以使開口 228之側 面244相對於點光源224之出光面232呈向外傾斜狀，以 利點光源224所發出之光向外擴散，而達 光模請之熱點現象的目的。其中，二二 =公式為(度(距離L/點光源似之混光距離 m))+90。在一不範實施例中，開口 ^ 源224之出光面232之間的失 卸 /、點先 许η + ^ 人畀0可控制在大於等於90 ❹ 度’且夾角0可例如小於或等於18〇度。 在本發明之另一實施方 又 凹槽中。請參照第6圖，在本’導光板可容置在外框之 外框206b包含凹槽248與方式之背光模組2〇4b中， 位於外框206b之相對二側。其中這些凹槽248與250 其中這些開口 228 άτ a #凹槽250包含數個開口 246, 206b。此外，這些開口 2耗連 250之槽底且貫穿外框 可為塑膠、高折射率塑膠、或凹槽248與250。外框2〇6b 例如射出成型技術或沖壓3、屬材料。外框2 06b可利用 凹槽25。之尺寸可較t術所製作而成。 "先屌光條210之尺寸略大，以 201037414 利裝設與容置點光源光條210。在一實施例中，凹槽250 • 内之開口 246的數量可例如與點光源光條210上之點光源 224的數量相同。此外，凹槽250内之開口 246的尺寸約 略大於點光源224之尺寸，以利容置點光源224。點光源 光條210係設置在外框206b之凹槽250内。其中，點光源 224分別位於凹槽250之開口 246中，且點光源224之出 光面232為凹槽248所暴露出。 外框206b之凹槽248可略大於導光板208，而使得導 Q 光板208可設置在凹槽248中。當導光板208設置於凹槽 248中時，點光源224之出光面232與導光板208之入光 面230相面對。在一實施例中，如第6圖所示，點光源224 之出光面232與導光板208之入光面230鄰貼。在另一實 施例中，點光源224之出光面232可與導光板208之入光 面230相隔一段距離。 在一實施例中，如第2圖所示，背光模組204可根據 產品型態與需求而選擇性地包含一或多個光學膜片220， 〇 例如增亮膜或稜鏡片，其中光學膜片220覆蓋在導光板208 上’以進行所需之光學效果的強化。在另一實施例中，背 光模組204更可根據產品之設計而選擇性地包含反射片 222’其中此反射片222可設置在導光板208之底部，以將 點光源光條210射向導光板208底部的光朝導光板208之 頂面反射，來提高點光源224之光利用效率。在又一實施 例中，背光模組204更可選擇性地包含有背板234,其中 . 背板234可設置在導光板208之下方，以承载導光板208， - 並可與外框206結合，來強化背光模組204之結構強度。 12 201037414 背板234可為板狀結構或框狀結構， 為金屬或硬度較高塑膠。 肖板234之材料可 由上述本發明之實施方式可知， 因為本發明之#錢組及其應帛 發明之—優點就是 光源光條嵌人外框之側壁中，而可^顯示器可直接將點 光源反射罩，因此不僅可減輕背光：f傳統背光模組中之 背光模組之組裝的便利性。 模植之重量’更可提升 由上述本發明之實施方式可知， Ο Ο 是因為本發明之背光模組及其應用=之f—優點就 用光原反射罩，因此可降低背光模說之製作成本。…使 由上述本發明之實施方式可知，太 是因為本發明之背光模組及其應用之液晶料器可2就 制外框之厚度，來調整發光二極體 點:控 光源的出光面與導綠之人光面之2等點域光條之點 發先-極體等點光源之混光距離， 整 熱點現象。 j碼夕貪先模組之 雖然本發明已以實施例揭露如上，然其 本=之Π在此技術領Ϊ中具有通常知識者，在不G 个I月之精神和範圍内，當可作各種 雕 :發明之保護範圍當視後附之申請專利範圍；界定= 【圖式簡單說明】 優點與實施例 λ 為讓本發明之上述和其他目的、特徵 此更明顯易懂，所附圖式之說明如下： 13 201037414 第1圖係繪示一種傳統背光模組之裝置示意圖。 第2圖係繪示依照本發明一實施方式的一種液晶顯示 器之裝置示意圖。 第3圖係繪示依照本發明一實施方式的一種背光模組 之點光源光條的裝置示意圖。 第4圖係繪示依照本發明一實施方式的一種背光模組 之背光模組的側視圖。 第5圖係繪示依照本發明一實施方式的一種背光模組 〇 之點光源光條與導光板之間的裝置示意圖。 第6圖係繪示依照本發明之另一實施方式的一種背光 模組之點光源光條、外框與導光板之間的裝置示意圖。 【主要元件符號說明】 100 :背光模組 102 :底板 104 :側板 106 :背板 108 :導光板 110 :入光面 112 :發光二極體光條 114 :膠框 116 :光學膜片 118 :反射片 120 :電路板 122 :光源反射罩 200 ·液晶顯不益 202 :液晶顯示面板 204 :背光模組 204a :背光模組 204b :背光模組 206 :外框 206a :外框 206b :外框 208 :導光板 210 :點光源光條 212 :凹槽 214 :第一側壁 14 201037414 216 :第三側壁 218 :第二側壁 220 :光學膜片 222 :反射片 224 :點光源 226 :電路板 228 :開口 230 :入光面 232 :出光面 234 :背板 236 :卡固片 238 :卡固片 240 :斜導面 242 :斜導面 244 :側面 246 :開口 248 :凹槽 250 :凹槽 L :距離 Lm :混光距離 Θ :夾角 Ο 15201037414 VI. Description of the Invention: [Technical Field] The present invention relates to a light source module, and more particularly to a backlight module without a light source reflector and a liquid crystal display (LCD) thereof Applications. [Prior Art] ^ The backlight module is an important component of a flat display device such as a liquid crystal display. Generally, in a flat display device, a backlight module is usually disposed on the back of the display panel to provide a backlight to the display panel for display on the face. Referring to Figure 1, a schematic diagram of a conventional backlight module is shown. The backlight module 100 mainly includes a back plate 106, a light guide plate 108, a light-emitting diode strip 112, a plastic frame 114, an optical film 116, a reflection sheet 118, and a light source reflection cover 122. The back plate 106 is generally formed of a metal plate member, and the structure of the back plate 106 in the middle of the frame may generally be a plate-like structure or may be a frame-like structure for reducing the weight of the backlight module. The backing plate 106 can generally be comprised of a bottom plate 102 and a side panel 104, wherein the side panels 104 are erected on one side of the bottom panel 102. The cross-sectional structure of the light source reflector 122 is generally a gate-like type, and the light-emitting diode strip 112 is disposed in the light source reflector 122 and is fixed on one inner side of the light source reflector 122, so that the light source reflector 122 can be The light emitted from the LED strip 112 toward the outside of the backlight module 100 is reflected toward the inside of the backlight module. The light-emitting diode strip 112 is mainly composed of a plurality of light-emitting diodes (not shown) and a circuit board 120. The light-emitting diodes are fixed on the circuit board 120 and electrically connected to the circuit board 120. . Light source reflection 4 201037414 The cover 122 is fixed to the inner side of the side plates of the back plates 106, together with the light-emitting diode strips 112 fixed therein. The reflection sheet 118 is disposed above the bottom plate 102 of the back plate 106, and the light guide plate 108 is disposed on the reflection sheet 118. The outer edge region of the light guide plate 1〇8 is sandwiched between the light source reflection cover 122, and the light emitting diode is disposed. The light-emitting surface of the light-emitting diode of the light strip η] faces the light-incident surface 11 of the light guide plate 108. The frame 114 is disposed above the light source reflector 122 and the back plate 106 and is coupled to the light source reflector 122 and the side plates 104 of the back plate 106. The optical film 116 覆盖 is overlaid on the light guide plate 108 to enhance the optical effect of the backlight module 1 . However, in the current backlight module, the assembly process requires that the light-emitting diode strip be fixed in the light source reflector, and then the light source reflector is fixed on the back panel, and then the plastic frame is set and fixed. The light source is reflected on the cover and the back plate. Therefore, the assembly of the entire LED strip is rather cumbersome and time consuming, which is not conducive to the fabrication of the backlight module. SUMMARY OF THE INVENTION Accordingly, one aspect of the present invention is to provide a backlight module and a liquid crystal display thereof that can directly immerse a point source light strip, such as a LED Light Bar. In the side wall of the outer frame, the light source reflector in the conventional backlight module can be omitted, the weight of the backlight module can be reduced, and the assembly convenience of the backlight module can be improved. Another aspect of the present invention is to provide a backlight module and a liquid crystal display thereof, which can reduce the manufacturing cost of the backlight module without using a light source reflector. 5 201037414 Another aspect of the present invention is to provide a backlight module and a liquid crystal display thereof, which can adjust the point light source of a light source strip such as a light-emitting diode strip by controlling the thickness of the outer frame The distance between the light-emitting surface and the light-incident surface of the light guide plate can adjust the light-mixing distance of the light source such as the light-emitting diode, thereby reducing the hot spot phenomenon of the backlight module. According to the above object of the present invention, a backlight module includes: an outer frame including a first sidewall, a second sidewall, and a third sidewall, wherein the first sidewall and the third sidewall are respectively joined to the second sidewall The second side wall is provided with at least one groove, and the at least one groove includes a plurality of openings extending through the second side wall; at least one light source strip is disposed in the at least one groove, wherein the The at least one light source strip includes at least: a circuit board; and a plurality of point light sources disposed on the circuit board and electrically connected to the circuit board, wherein the point light sources are correspondingly disposed in the openings of the grooves; and a light guide plate, at least The light-incident surface of the light guide plate is disposed between the first side wall and the third side wall, and the light-emitting surface of each point light source is opposite to the light-incident surface of the light guide plate. According to an embodiment of the invention, the point light source strip is a light emitting diode strip. In accordance with another embodiment of the present invention, the circuit board described above can be a rigid printed circuit board (PCB) or a flexible circuit board. According to still another embodiment of the present invention, the width of the groove may be less than or equal to the width of the second side wall. According to the above object of the present invention, a liquid crystal display is further provided, which comprises: a liquid crystal display panel and a backlight module disposed on the back surface of the liquid crystal display panel. The backlight module includes at least one outer frame including a side wall, a second side wall and a third side wall of the sixth 201037414, wherein the first side wall and the third side wall 'are respectively joined to opposite sides of the second side wall and face each other The second side wall is provided with at least one recess, and the at least one recess includes a plurality of openings extending through the second sidewall; at least one light source strip is disposed in the at least one recess, wherein the at least one light source strip is at least The method includes: a circuit board; and a plurality of point light sources disposed on the circuit board and electrically connected to the circuit board, wherein the point light sources are correspondingly disposed in the openings; and the light guide plate includes at least one light incident surface, wherein the light guide plate comprises The outer edge of the light plate is interposed between the first side wall and the third side wall of the outer frame, and the light emitting surface of each point light source is opposite to the light incident surface. According to an embodiment of the invention, the light source strip can be embedded, fixed, locked or adhered to the groove of the second side wall of the outer frame. By using the outer frame of the invention, the light source strip can be directly fixed in the groove of the side wall of the outer frame without additional light source reflector, thereby reducing the components of the backlight module and simplifying the assembly process of the backlight module. The assembly time of the backlight module can be shortened. In addition, by adjusting the thickness of the side wall of the outer frame, the light mixing distance of the point light source can be adjusted, thereby reducing or avoiding the hot spot phenomenon on the light incident side of the Q backlight module. [Embodiment] Please refer to FIG. 2 and FIG. 3, wherein FIG. 2 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention, and FIG. 3 is a schematic view showing an apparatus according to an embodiment of the present invention. A schematic diagram of a device for a point source light strip of a backlight module. The liquid crystal display 200 mainly includes a liquid crystal display panel '202 and a backlight module 204. The backlight module 204 is disposed on the back surface of the liquid crystal display surface plate 202 to provide a backlight of the liquid crystal display panel 202. In the embodiment of the present invention, the backlight module 204 includes at least an outer frame 206, one or more point source light strips 210, and a light guide plate 208. The material of the outer frame 206 may be a plastic such as a high refractive index plastic, or a metal material, and may be fabricated, for example, by injection molding or stamping. Therefore, the outer frame 206 can be an integrally formed structure. In addition, the material of the outer frame 206 is preferably a high-reflection material, so that the light emitted by the point source light bar 210 is reversely disposed on the light guide plate 208. As shown in FIG. 2, the outer frame 206 can include, for example, a first sidewall 214, a second sidewall 218, and a third sidewall 216, wherein the first sidewall 214 and the third sidewall 216 are respectively joined to the second sidewall 218. Side, and the first side wall 214 and the third side wall 216 face each other. In one embodiment, the second sidewall 218 includes at least one recess 212, wherein the recess 212 is recessed on the outer side of the second sidewall 218. In an exemplary embodiment, the recess 212 extends only laterally in a portion of the second side wall 218 of the outer frame 206 such that the width of the recess 212 is less than the width of the second side wall 218. In another exemplary embodiment, the recess 212 can extend laterally throughout the second sidewall 218 of the outer frame 206 such that the recess 212 is equally wide with the second sidewall 218. In the embodiment of the present invention, the number of the grooves 212 of the second side wall 218 of the outer frame 206 may be equal to the number of the point light source strips 210 of the backlight module 204, and the shape of the groove 212 may be matched with the point source light bar 210. The shape of the groove 212 is substantially the same as that of the point light source strip 210 to facilitate the installation and accommodation of the point light source strip 210. For example, when the backlight module 204 includes two point light source strips 210, the opposite sides of the outer frame 206, for example, the upper and lower sides or the left and right sides, or the outer sides of the second side walls 218 of the adjacent two sides may be Two grooves 212 are provided to accommodate the two-point light strips 8 201037414 • 210, respectively. In another example, when the backlight module 2〇4 includes four point source light strips 210, the outer side surfaces of the second side walls 218 of the four sides of the outer frame 206 may be provided with four recesses 212' to accommodate the same. Four point source light bars 21〇. Each of the recesses 212 of the second side wall 218 of the outer frame 2〇6, as shown in Fig. 3, further includes a plurality of openings 228, wherein the openings 228 can be located at the bottom of the groove 212 and through the second side wall 218. The number of openings 228 in the recess 212 can be the same as the number of the point light sources 224 disposed on the point light source strip 210 of the recess 212. Of course, the number of openings 228 in the recess 212 can be greater than the point source strip. The number of point sources 224 on 210. In addition, the size of the opening 228 in the recess 212 is approximately larger than the size of the point source 224 on the point source strip 21 to facilitate the point source 224. As shown in Fig. 2, the point source light bar 21 is disposed within the recess 212 of the second side wall 218 of the outer frame 206. In some examples, the point source light bar 210 can be directly embedded in the recess 212 of the second side wall 218 of the outer frame 206 by a tight fit with the recess 212 of the outer frame 206, or can be double-sided tape or The adhesive film is adhered and fixed in the groove 〇 212 of the second side wall 218 ′ or can be locked in the groove 212 of the second side wall 218 by using a locking component such as a screw. In an example, referring to FIG. 4, the opposite side edges of the recess 212 of the second side wall 218 of the outer frame 206a of the backlight module 204a are, for example, upper and lower sides, and are respectively provided with fastening pieces 238 and 236. The two fastening tabs 238 and 236 may protrude slightly from the side of the recess 212 and extend into the partial recess 212. By means of the two card fixing pieces 238 and 236, the point light source strips 210 disposed in the recesses 212 of the outer frame 2〇6a can be effectively stuck. In the exemplary embodiment, the securing tabs 238 and 236 have oblique guiding surfaces 242 and 240 adjacent to the sides of the recess 212, respectively, to guide the point source light 9 201037414 strip 210 into the recess 212. Referring to FIG. 3, the point source light bar 210 mainly includes a circuit board 226 and a plurality of point light sources 224', wherein the point light sources 224 are disposed and fixed on the circuit board 226' and the point light sources 224 are preset on the circuit board 226. The circuit is electrically connected. In an exemplary embodiment, the point source 224 may be, for example, a light emitting diode' and the point source strip 210 may be, for example, a light emitting diode strip. Circuit board 226 can be, for example, a rigid printed circuit board or a flexible circuit board. When the point light source strip 210 is disposed in the 0 recess 212 of the second side wall 218 of the outer frame 206, the point light source 224 is respectively located in the opening 228 of the recess 212, and the light exit surface 232 of the point source 224 is defined by the second side wall. The opening 228 of 218 is exposed. As shown in FIG. 2, the outer frame 206 is disposed around the outer periphery of the light guide plate 208, and the outer edge of the light guide plate 208 is selectively interposed between the first side wall 214 and the third side wall 216 of the outer frame 206. Referring to FIG. 2 and FIG. 3 simultaneously, the light guide plate 208 and the point source light bar 210 have a light incident surface 230 ′ on one side of the point light source strip 210 and the light exit surface 232 and the light guide of each point light source 224 of the point light source strip 210 . The light incident surface 230 of the slab 208 faces so that the light emitted by the point light source 224 from the light exit surface 232 is directly incident on the light guide plate 208 via the light incident surface 230 of the light guide plate 208. By performing the structural design on the outer frame 206, the point source light strip can be directly embedded in the recess 212 of the outer frame 206, so that no additional conventional light source reflector is required. Therefore, the components of the backlight module 204 can be reduced, the weight of the backlight module 204 can be reduced, and the assembly of the backlight module 204 can be simplified, thereby achieving the effect of improving the production capacity and reducing the manufacturing cost. Referring to FIG. 5, a schematic diagram of a device between a point source light strip and a light guide plate of a backlight module of 201037414 according to an embodiment of the present invention is shown. In the backlight module 204, by adjusting the thickness of the second sidewall 218 of the outer frame 206, the distance L between the light-emitting surface 232 of the point source 224 of the point source light bar 210 and the light-incident surface 230 of the light guide plate 208 can be adjusted. In this way, the light mixing distance Lm of the point source 224 can be adjusted to greatly improve the hot spot phenomenon of the backlight module. In addition, in the case where the second side wall 218 of the outer frame 206 has a sufficient thickness, the side 244 and the light-emitting surface 232 of the opening 228 between the light-emitting surface 232 of the point source 224 and the light-incident surface 230 of the light guide plate 208 can be changed. The angle Θ between the angles Θ is greater than 90 degrees, so that the side 244 of the opening 228 is inclined outward with respect to the light exit surface 232 of the point source 224, so that the light emitted by the point source 224 is outwardly diffused, and the light mode is reached. Please aim for the hot phenomenon. Among them, the second two = formula is (degree (distance L / point source like mixed light distance m)) +90. In an exemplary embodiment, the loss/discharge between the light-emitting surfaces 232 of the opening source 224, the point η + ^ 畀 0 can be controlled to be greater than or equal to 90 ' degrees and the angle 0 can be, for example, less than or equal to 18 〇度. In another embodiment of the invention, the recess is also provided. Referring to Fig. 6, in the backlight module 2〇4b, in which the light guide plate can be accommodated in the outer frame 206b, the outer frame 206b is provided on the opposite sides of the outer frame 206b. Wherein the recesses 248 and 250 are wherein the openings 228 άτ a # recess 250 include a plurality of openings 246, 206b. In addition, these openings 2 are consuming 250 groove bottoms and may extend through the outer frame to be plastic, high refractive index plastic, or grooves 248 and 250. The outer frame 2〇6b is, for example, injection molding technology or stamping 3, genus material. The outer frame 2 06b can utilize the recess 25. The size can be made more than the t. "The size of the light bar 210 is slightly larger, and the light source strip 210 is installed and accommodated with 201037414. In one embodiment, the number of openings 246 in the recess 250 can be, for example, the same as the number of point sources 224 on the point source strip 210. In addition, the opening 246 in the recess 250 is approximately the same size as the point source 224 to accommodate the point source 224. The point source light strip 210 is disposed within the recess 250 of the outer frame 206b. The point light sources 224 are respectively located in the openings 246 of the recesses 250, and the light exiting surfaces 232 of the point light sources 224 are exposed by the recesses 248. The recess 248 of the outer frame 206b can be slightly larger than the light guide plate 208 such that the light guide optical plate 208 can be disposed in the recess 248. When the light guide plate 208 is disposed in the recess 248, the light exit surface 232 of the point light source 224 faces the light incident surface 230 of the light guide plate 208. In an embodiment, as shown in FIG. 6, the light-emitting surface 232 of the point light source 224 is adjacent to the light-incident surface 230 of the light guide plate 208. In another embodiment, the light exit surface 232 of the point source 224 can be spaced from the light incident surface 230 of the light guide plate 208 by a distance. In an embodiment, as shown in FIG. 2, the backlight module 204 can selectively include one or more optical films 220, such as a brightness enhancement film or a film, depending on the product type and requirements, wherein the optical film The sheet 220 is overlaid on the light guide plate 208 to enhance the desired optical effect. In another embodiment, the backlight module 204 can further include a reflective sheet 222 ′ according to the design of the product. The reflective sheet 222 can be disposed at the bottom of the light guide plate 208 to guide the point source light strip 210 to the light guide plate. The light at the bottom of the 208 is reflected toward the top surface of the light guide plate 208 to improve the light utilization efficiency of the point source 224. In another embodiment, the backlight module 204 can further include a backing plate 234, wherein the backing plate 234 can be disposed under the light guiding plate 208 to carry the light guiding plate 208, and can be combined with the outer frame 206. To strengthen the structural strength of the backlight module 204. 12 201037414 The back plate 234 can be a plate structure or a frame structure, and is made of metal or a relatively high hardness plastic. The material of the slab 234 can be known from the above embodiments of the present invention, because the #钱组 of the present invention and the invention thereof have the advantage that the light source strip is embedded in the side wall of the outer frame, and the display can directly directly point the light source. The reflector can not only reduce the backlight: the convenience of assembly of the backlight module in the conventional backlight module. The weight of the mold can be improved. It can be seen from the above embodiments of the present invention that the backlight module of the present invention and its application have the advantage of using the light source reflector, thereby reducing the production of the backlight module. cost. It can be seen from the above embodiments of the present invention that the backlight module of the present invention and the liquid crystal material of the same can be used to adjust the thickness of the outer frame to adjust the light-emitting diode point: the light-emitting surface of the light source is controlled The point of the light beam of the 2nd-order dot-light strip of the green-lighter is the first--the light-mixing distance of the point source of the polar body, and the whole hot spot phenomenon. Although the present invention has been disclosed in the above embodiments, the present invention has the usual knowledge in the technical know-how, and can be used in the spirit and scope of the G-I-month. Various types of engraving: the scope of protection of the invention is attached to the scope of the patent application; the definition = [simplified description of the drawings] Advantages and embodiments λ In order to make the above and other objects and features of the present invention more obvious and easy to understand, the drawings The description is as follows: 13 201037414 The first figure shows a schematic diagram of a conventional backlight module. 2 is a schematic view of a device of a liquid crystal display according to an embodiment of the present invention. 3 is a schematic diagram of a device for a point source light strip of a backlight module according to an embodiment of the invention. 4 is a side view of a backlight module of a backlight module according to an embodiment of the invention. FIG. 5 is a schematic diagram of a device between a point light source strip and a light guide plate of a backlight module according to an embodiment of the invention. 6 is a schematic diagram of a device between a point source light strip, an outer frame and a light guide plate of a backlight module according to another embodiment of the present invention. [Main component symbol description] 100: backlight module 102: bottom plate 104: side plate 106: back plate 108: light guide plate 110: light incident surface 112: light emitting diode light strip 114: plastic frame 116: optical film 118: reflection Sheet 120: circuit board 122: light source reflector 200: liquid crystal display 202: liquid crystal display panel 204: backlight module 204a: backlight module 204b: backlight module 206: outer frame 206a: outer frame 206b: outer frame 208: Light guide plate 210: point source light bar 212: groove 214: first side wall 14 201037414 216: third side wall 218: second side wall 220: optical film 222: reflective sheet 224: point light source 226: circuit board 228: opening 230 : light-incident surface 232 : light-emitting surface 234 : back plate 236 : fastening piece 238 : fastening piece 240 : oblique guiding surface 242 : oblique guiding surface 244 : side surface 246 : opening 248 : groove 250 : groove L : distance Lm : Mixing distance Θ : Angle Ο 15