201227084 六、發明說明： 【發明所屬之技術領域】 纟p本發明係-種背光模組，特別是—_止漏光的背光模 【先前技術】 液晶顯示器屬於台灣重點發展工業之一，隨著價格不斷地 下降’近辭來已逐漸取代傳崎極射錄顯科而成為市面 上顯示器的主流。無論是筆記型電腦、行動電話、個人電腦榮 幕乃至於家用電視等，液晶顯示器可說已完全走入人類的生活 之中。而由於液晶分子本身無法發光的特性，因此液晶顯示器 除了液晶面板外’尚須仰賴背光模組提供光源，方能達到顯示 的作用。 早期背光模組係使用冷陰極螢光管（CCFL)作為發光光 源’且係將絲設置於液“板的正下方，即所謂直下式的背 光模組。但由於近年來魏意識铜以及電子產品薄型化的趨 勢，含有果的冷陰極螢光管已逐漸被發光二極體（LED)所取 代，同時為了使液晶顯示器薄型化，背光模組的光源亦從下方 改:置於側邊’再藉由導光板將自側邊入射的光線轉向並形成 面光源而做晶Φ板顺’此即所糊光式的背光模組。 然而側光式背光馳之發光元件必須與導光板的入光面 作良好的組裝匹配，否則容易導致漏光現象，進而使顯示面板 的光均勻度下降。 201227084 【發明内容】 ♦有鏗於此，本發明提出一種背光模組，可有效改善漏光缺 陷’其包含導光板、發光元件以及邊框等。其中導光板包含入 光面、出光面與固定部，固定部係位於入光面與出光面之間； 發光元件係設置於入光面；而邊框則包含具有凸出結構之彎折 部，凸出結構抵接導光板之固定部。 由於導光板之固定部係位在入光面與出光面之間，而邊框 • 之凸出結構係彈性抵接導光板之固定部，因此當發光元件所發 出之光線未能完全進入導光板之入光面而發生漏光現象時，凸 出結構可在漏光漏至出光面前予以阻擔，使出光面的光均勻度 不致受到影響。 又 【實施方式】 。月參照第1A至第2B圖，本別為本發明之邊框示意圖 (一）、邊框示意圖（二）、背光模組剖面示意圖（一）201227084 VI. Description of the Invention: [Technical Fields of the Invention] 纟p The present invention is a backlight module, in particular, a backlight mode that leaks light [Prior Art] A liquid crystal display belongs to one of Taiwan's key development industries, with the price The constant decline of 'near remarks has gradually replaced the Chuanqi Polar Shooting Recording Division and became the mainstream of the display on the market. Whether it's a notebook computer, a mobile phone, a personal computer glory, or a home TV, LCD monitors can be said to have completely entered human life. However, due to the inability of the liquid crystal molecules to emit light, the liquid crystal display has to rely on the backlight module to provide a light source in addition to the liquid crystal panel to achieve the display function. In the early backlight module, a cold cathode fluorescent tube (CCFL) was used as the light source of the light source, and the wire was placed directly under the liquid "plate", which is a so-called direct type backlight module. However, due to the recent years, Wei consciousness copper and electronic products The trend of thinning, the cold cathode fluorescent tube containing fruit has been gradually replaced by a light-emitting diode (LED), and in order to make the liquid crystal display thinner, the light source of the backlight module is also changed from below: placed on the side ' The light incident from the side is turned by the light guide plate to form a surface light source, and the crystal Φ plate is formed as a paste backlight module. However, the light-emitting element of the edge-lit backlight must be combined with the light guide plate. The surface is well assembled and matched, otherwise the light leakage phenomenon is easily caused, and the light uniformity of the display panel is lowered. 201227084 [Invention] The present invention provides a backlight module, which can effectively improve the light leakage defect. a light guide plate, a light-emitting element, a frame, etc. The light guide plate includes a light-incident surface, a light-emitting surface and a fixing portion, and the fixing portion is located between the light-incident surface and the light-emitting surface; The frame includes a bent portion having a protruding structure, and the protruding structure abuts the fixing portion of the light guide plate. Since the fixing portion of the light guide plate is positioned between the light incident surface and the light exit surface, the frame is convex The structure is elastically abutted against the fixing portion of the light guide plate. Therefore, when the light emitted by the light-emitting element fails to completely enter the light-incident surface of the light guide plate and the light leakage occurs, the protruding structure can resist the leakage of light to the light. The light uniformity of the light-emitting surface is not affected. [Embodiment] Referring to Figures 1A to 2B, the frame diagram (1), the frame diagram (2), and the schematic diagram of the backlight module are shown in the present invention. One)
模組剖面示意圖（二），揭露一種背光模幻及其邊㈣。本 發明之背光模組1包含導光板U、發光元件12以及邊框13 等。其中導光板11包含人絲⑴、㈣m細定部113, 固定部m係位於入光面⑴與出光面112之間；較佳地 發明之_113係與出光面112位於同—平面上為範例，而 此種設計較於容易將導歧u結合於邊框13内，但不限於 此。於其它實施财，固定部113係與出光面m位於不同平 面上。發光元件u具有係設置於人光面iu。—般而言，發 201227084 光元件可分為點光源（例如：無機發光二極體、有機發光二極 體、或其它合適的二極體、或上述二極體之串聯/並聯組合） 或者是螢光光源（例如：冷陰極螢光燈管、熱陰極螢光燈管、 平面光源、場發射光源、或其它合適的光源、或上述之組合）、 或上述光源之組合。本發明實施例以點光源為實施範例，但不 限於此，螢光光源亦可選用之。邊框13則包含彎折部131， 彎折部131具有凸出結構132,且凸出結構132抵接導光板u 之固定部113上表面。也就是說’凸出結構132係往邊框i3 之底部133内表面方向凸出。凸出結構132基本上不限定剖面 的形狀’但凸出結構132設計可區分下列設計且皆可使用：^) 凸出結構具有半圓形曲率、（2)凸出結構具有接近半圓形曲 率、（3)凸出結構具有曲率、⑷部份凸出結構132具有曲率、 (5)凸出結構132不具有曲率，例如有一平面。其中，（1)、（2) 與⑶的凸出結構設計可稱為轉結構為本發明的較佳實施例 1為本發$ f使_描述’但是，⑴與(2)的凸出結構設計為 最佳實施例，因⑴與(2)設計較不會刮傷導光板n之出光面 112。詳細而言’邊框13是由底部133、側邊134、上部135、 延伸部136與彎折部131所構成，且底部133、側邊134與上 部135連接形成光源容納空間137，以容納發光元件12，而延 伸部136連接上部135與.？折部131，且延伸部a朝著底部 133之内表面方向延伸，則上部135、延伸部136及部份響折 4 131呈現階梯狀結構（從剖面圖觀察之）。 背光模組1更包含外框19，其係設置於邊框13外，且外 201227084 框19與彎折部⑶相隔一間距，以構成容置空間139。因此， 容置空f曰1139就可當作可供彎折部131彎折活動的空間，而可 使得弯折部丨3〗彈性彎折，贈凸統構132彈性抵接於導光 板11之固定部113上表面。也就是說，外框19之部份内表面 會接觸邊框13之上部US部份外表面，且不接觸-折部⑶， 才能構成此容置空間139。 當人員將導光板11與邊框13結合時，如第2A圖所示， • 導光板11與邊框13之間僅在凸出結構！32處有所接觸，因此 可有效避免導光板11被邊框丨3所刮傷。 依照上述的邊框設計方式，在一實施例中，邊框13至少 包覆發光元件12之三個面，如第2A圖所示，發光元件12除 發光面121外，均被邊框13所包覆。 為了讓發光元件12所發出的光線能夠全部被使用或再次 被使用，因此，在其它實施例中，在邊框13底部133的内表 鲁面與導光板11之背面114間可選擇性的設置有一反光層14， 而此反光層14可設置於導光板11之背面114上（即相對於出 光面112)或者是邊框13底部133的内表面上。本發明實施 例是以背面114設有反光層14，同時邊框13更延伸且全面包 覆導光板11之为面14為範例，但不限於此。其中，反光層 14可為單層或多層結構，且其材料可包含白色材料、反射材 1料或其它合適的材料/設計，皆可使用。 由於發光元件12發光需要提供電源，且此電源來自電路 201227084 板，則發光元件12包含電路板16 ^其中，電路板包含軟性電 路板、印刷電路板、或上述之組合。本發明是以軟性電路板為 範例說明，但不限於此。而背光模組更包含黏著層15，則電 路板16係藉由黏著層15而固定於邊框13之底部133内表面 上；因此，導光板11之固定部113背面，即相對於固定部133 之上表面’係會抵接於黏著層。其中，黏著層1$之材料包 含黏著劑、膠帶、或其它合麵材料、或上狀組合。本發明 實施例之黏著層15係以膠帶為範例來說明，則電路板16係藉 由黏著層15的貼附而固定於邊框η之底部133内表面上。 請參照第3 ®，為本發明之背光模組剖面示意圖（三）， 揭露-種背賴組2。在前—實施财，當黏著層15以膠帶 為範例時’導光板11之固定部113係抵接於膠帶± ,然而膠 帶的厚度容紐生不均-的縣，因此當膠帶過薄時，發光元 件12之發光面121便會高於入光面1U而產生漏光2〇。然而 由於本實施例之彎折部131具有凸出結構132，且凸出結構132 係彈性抵接導光板11之HJ定部113，因此漏光2G會被凸出結 構132所阻擋而無法漏至出光面112，也因此出光面u之光 均勻度付以保持。 此外，組裝過程中，也容易因為組裝疏失導致發光元件 I2之發光面⑵高於導光板U之入光面lu，進而產生漏光 2〇。但藉由凸出結構132的阻擋，即便產生漏光2〇，其亦無 法漏至導光板11之出絲112秘響出絲112的光均勾度。 201227084 請再參照第3圖，導絲U之出光面112設置有擴散板 17 ’用以均勻擴散自出光面112所發出的光；此外，擴散板 Π上更設有光學膜18。其中光學膜18包含增亮膜（腳）、 均光膜、強效增亮膜（DBEF)、偏光膜、或其它合適的光學膜、 或上述之組合。再者，—些特殊的光細可㈣具有至少二種 光學功能，龍能稱為複合式光學膜，例如：㈣具有偏光/ 增党功能、擴散/增亮功能、均光/強效增亮功能、偏光/擴散/ 增亮功能等等。 在上述的實施例中，皆以發光元件12與導光板η之入光 面ill /又有相隔-間距為範例來說明，但不限於此。請參照第 t圖為本發明之为光模組剖面示意圖（四），揭露一種背光 模且3。其中’背光模組3之相關設計皆可查看上述實施例所 述的背光馳1射光餘2來制。砰之處在於：背光模 組3之發光7〇件12係與導光板11之人光面lu相隔一間距， 因此即使發光面12ι未高於入光面⑴，亦會產生漏光2〇。同 樣地，藉由凸出結構132的阻擔，漏光2〇並無法漏至出光面 112。 本發明之主要目的在於解決各種漏光現象，使其不至於影 響出光面的光均勻度，進而獲致良好的發光品質。 雖然本發明已以前述較佳實施例揭示，然其並非用以限定 本發月任何熟習此技藝者，在不脫離本發明之精神和範圍 内，當可作各種之更動與修改。如上述的解釋，都可以作各型 201227084 式的修正與變化，而不會破壞此發明的精神。因此本發明之保 護範圍當視後附之申請專利範圍所界定者為準。The schematic diagram of the module profile (2) reveals a backlight illusion and its side (4). The backlight module 1 of the present invention includes a light guide plate U, a light-emitting element 12, a bezel 13, and the like. The light guide plate 11 includes a human wire (1) and a (four) m fine portion 113. The fixing portion m is located between the light incident surface (1) and the light exit surface 112. Preferably, the invention _113 is located on the same plane as the light exit surface 112. However, such a design is easier to incorporate the guide u into the bezel 13, but is not limited thereto. In other implementations, the fixed portion 113 is located on a different plane from the light exit surface m. The light-emitting element u has a system that is disposed on the human face iu. In general, the 201227084 optical component can be divided into point sources (eg, inorganic light-emitting diodes, organic light-emitting diodes, or other suitable diodes, or series/parallel combinations of the above-mentioned diodes) or A fluorescent light source (eg, a cold cathode fluorescent tube, a hot cathode fluorescent tube, a planar light source, a field emission source, or other suitable light source, or a combination thereof), or a combination of the above. In the embodiment of the present invention, the point light source is taken as an example, but the invention is not limited thereto, and the fluorescent light source may also be selected. The frame 13 includes a bent portion 131 having a protruding structure 132, and the protruding structure 132 abuts against the upper surface of the fixing portion 113 of the light guide plate u. That is to say, the projecting structure 132 protrudes toward the inner surface of the bottom portion 133 of the frame i3. The raised structure 132 does not substantially define the shape of the cross section 'but the convex structure 132 design distinguishes between the following designs and can be used: ^) the convex structure has a semi-circular curvature, and (2) the convex structure has a nearly semi-circular curvature (3) the convex structure has a curvature, (4) the partial convex structure 132 has a curvature, and (5) the convex structure 132 has no curvature, for example, a plane. Wherein, the convex structure design of (1), (2) and (3) may be referred to as a rotating structure. The preferred embodiment 1 of the present invention is the present invention. The convex structure of (1) and (2) Designed as a preferred embodiment, the (1) and (2) designs are less likely to scratch the light exit surface 112 of the light guide plate n. In detail, the frame 13 is composed of a bottom portion 133, a side edge 134, an upper portion 135, an extending portion 136 and a bent portion 131, and the bottom portion 133 and the side portion 134 are connected to the upper portion 135 to form a light source accommodating space 137 for accommodating the light-emitting element. 12, and the extension 136 is connected to the upper portion 135 and ?? The folded portion 131, and the extending portion a extends toward the inner surface of the bottom portion 133, and the upper portion 135, the extending portion 136, and the partial folding portion 4 131 exhibit a stepped structure (as viewed from a cross-sectional view). The backlight module 1 further includes an outer frame 19 disposed outside the frame 13 and spaced apart from the bent portion (3) by a frame 21 to form an accommodation space 139. Therefore, the accommodation space f 曰 1139 can be used as a space for the bending portion 131 to bend and move, and the bending portion 丨 3 can be elastically bent, and the convex structure 132 elastically abuts against the light guide plate 11 The upper surface of the fixing portion 113. That is to say, a part of the inner surface of the outer frame 19 contacts the outer surface of the upper portion of the upper portion of the frame 13 and does not contact the folded portion (3) to constitute the accommodating space 139. When a person combines the light guide plate 11 with the bezel 13, as shown in FIG. 2A, • the light guide plate 11 and the bezel 13 are only in a convex structure! There are contacts at 32 places, so that the light guide plate 11 can be effectively prevented from being scratched by the frame 丨3. According to the above-described frame design, in one embodiment, the frame 13 covers at least three faces of the light-emitting element 12. As shown in Fig. 2A, the light-emitting element 12 is covered by the frame 13 except for the light-emitting surface 121. In order to allow all the light emitted by the light-emitting element 12 to be used or used again, in other embodiments, a selective arrangement between the inner surface of the bottom surface 133 of the frame 13 and the back surface 114 of the light guide plate 11 is provided. The light reflecting layer 14 can be disposed on the back surface 114 of the light guide plate 11 (ie, relative to the light emitting surface 112) or on the inner surface of the bottom portion 133 of the frame 13. In the embodiment of the present invention, the reflective layer 14 is provided on the back surface 114, and the frame 13 is further extended and the surface 14 of the light guide plate 11 is completely covered, but is not limited thereto. Wherein, the light reflecting layer 14 may be a single layer or a multi-layer structure, and the material thereof may comprise a white material, a reflective material or other suitable materials/designs, and may be used. Since the light-emitting element 12 needs to provide a power source for illumination, and the power source is from the circuit 201227084 board, the light-emitting element 12 includes a circuit board 16 where the circuit board comprises a flexible circuit board, a printed circuit board, or a combination thereof. The present invention is described by way of a flexible circuit board, but is not limited thereto. The backlight module further includes an adhesive layer 15, and the circuit board 16 is fixed on the inner surface of the bottom portion 133 of the frame 13 by the adhesive layer 15; therefore, the back surface of the fixing portion 113 of the light guide plate 11 is opposite to the fixing portion 133. The upper surface will abut the adhesive layer. Among them, the adhesive layer 1$ material contains an adhesive, a tape, or other mating material, or a combination of the upper layers. The adhesive layer 15 of the embodiment of the present invention is exemplified by a tape, and the circuit board 16 is fixed to the inner surface of the bottom portion 133 of the frame n by the adhesion of the adhesive layer 15. Please refer to the 3th, which is a cross-sectional view (3) of the backlight module of the present invention, and discloses a group 2. In the front-implementation, when the adhesive layer 15 is exemplified by the tape, the fixing portion 113 of the light guide plate 11 abuts against the tape ±, but the thickness of the tape is uneven in the county, so when the tape is too thin, The light-emitting surface 121 of the light-emitting element 12 is higher than the light-incident surface 1U to generate light leakage. However, since the bent portion 131 of the embodiment has the protruding structure 132, and the protruding structure 132 elastically abuts against the HJ fixed portion 113 of the light guide plate 11, the light leakage 2G is blocked by the protruding structure 132 and cannot leak to the light. The surface 112, and thus the uniformity of light of the exit surface u, is maintained. Further, during the assembly process, it is also easy to cause the light-emitting surface (2) of the light-emitting element I2 to be higher than the light-incident surface lu of the light-guide plate U due to assembly loss, thereby generating light leakage. However, by the blocking of the protruding structure 132, even if light leakage occurs, it does not leak to the light output of the filament 112 of the light guide plate 11. 201227084 Referring again to Fig. 3, the light-emitting surface 112 of the guide wire U is provided with a diffuser plate 17' for uniformly diffusing the light emitted from the light-emitting surface 112. Further, the diffuser plate is further provided with an optical film 18. The optical film 18 comprises a brightness enhancing film (foot), a homogenous film, a strong brightness enhancing film (DBEF), a polarizing film, or other suitable optical film, or a combination thereof. Furthermore, some special light fines (4) have at least two optical functions, and the dragon can be called a composite optical film, for example: (4) with polarized/zincening function, diffusion/brightening function, uniform light/strong brightening Features, polarizing/diffusion/brightening, and more. In the above embodiments, the light-emitting elements 12 and the light-incident surface ill / of the light guide plate η are spaced apart from each other as an example, but are not limited thereto. Please refer to FIG. t for a cross-sectional view (4) of the optical module of the present invention, and disclose a backlight module and 3. The related design of the backlight module 3 can be viewed from the backlight 1 of the above embodiment. The reason is that the light-emitting 7 element 12 of the backlight module 3 is spaced apart from the human light surface lu of the light guide plate 11, so that even if the light-emitting surface 12ι is not higher than the light-incident surface (1), light leakage 2 产生 occurs. Similarly, by the blocking of the protruding structure 132, the light leakage 2〇 cannot leak to the light exiting surface 112. The main object of the present invention is to solve various light leakage phenomena so as not to affect the light uniformity of the light-emitting surface, thereby achieving good light-emitting quality. Although the present invention has been disclosed in its preferred embodiments, it is not intended to limit the scope of the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention. As explained above, the modifications and variations of the various types of 201227084 can be made without detracting from the spirit of the invention. Therefore, the scope of protection of the present invention is defined by the scope of the appended claims.
S 10 201227084 【圖式簡單說明】 第1A圖為本發明之邊框示意圖（一）。 第1B圖為本發明之邊框示意圖（二）。 第2A圖為本發明之背光模組剖面示意圖（一）。 第2B圖為本發明之背光模組剖面示意圖（二）。 第3圖為本發明之背光模組剖面示意圖（三）。 第4圖為本發明之背光模組剖面示意圖（四）。 【主要元件符號說明】 1、2、3 ....背光模組 11 ......導光板 111 ......入光面 112 ......出光面 113 ......固定部 114 ......背面 12 ......發光元件 121......發光面 13 ......邊框 131 ......彎折部 132 ......凸出結構 133 ......底部 134 ......側邊 135 ......上部 201227084 136 ......延伸部 137 ......容納空間 139......容置空間 14 ......反光層 15 ......黏著層 16 ......電路板 17 ......擴散板S 10 201227084 [Simple description of the drawing] Fig. 1A is a schematic diagram of the frame of the present invention (1). Figure 1B is a schematic view of the frame of the present invention (2). 2A is a schematic cross-sectional view (1) of the backlight module of the present invention. 2B is a cross-sectional view (2) of the backlight module of the present invention. Figure 3 is a cross-sectional view (3) of the backlight module of the present invention. Figure 4 is a cross-sectional view (4) of the backlight module of the present invention. [Description of main component symbols] 1, 2, 3 .... backlight module 11 ... light guide plate 111 ... light-incident surface 112 ... light-emitting surface 113 ... ...fixing portion 114 ... back surface 12 ... light-emitting element 121 ... light-emitting surface 13 ... frame 131 ... bent portion 132 ... protruding structure 133 ... bottom 134 ... side 135 ... upper 201227084 136 ... extension 137 ..... . accommodation space 139 ... accommodation space 14 ... reflective layer 15 ... adhesive layer 16 ... circuit board 17 ... diffusion plate
18 ......光學膜 19 ......外框 20 ......漏光18 ......Optical film 19 ......Outer frame 20 ......Light leakage
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