1292071 九、發明說明： 【發明所屬之技術領域】 … 本發明係相關於一種液晶顯示器，特別是指一種其背 光模組的框架具防止漏光功能的液晶顯示器。 【先前技術】 在各項影像顯示技術中，液晶顯示器由於具有重量 / &體積小、耗電量低、無輻射等優點，已廣泛的被使用 在各種裂置中。 鲁請參閱第-圖’其為液晶顯示器之作動原理示意圖， 其主要由-背光模組10及一液晶兩板u所組成，在此僅 顯示其中之主要元件。 ί光模組10包含一導光板1〇1、一燈管、以及一框 架1〇2 4盲102设於導光板1〇1的一端，裝設於框架 ‘藉由燈管102所提供之光線，進入導光板1〇1後，經 由導光板101的擴散引導，再發散射入至液晶面板11中， / 以為影像顯示之用。 β 而液晶面板11又主要包括為一上基板lu、一下基板 Π2及-液晶層113。上基板⑴表面又設有濾光區域，塗 佈了紅、綠、藍(R、G、B)三色的光阻劑，使上基板in 具有光線的過濾效果。 請繼續參閱第二圖’當燈管102啟動時，所產生的光 線，過導光板101發出，照射在框㈣3内縣面時，容 易受，架103表_影響膽生散射或是折射，導致光線 自液3Θ面板11的邊緣處逸人外界，造成漏光現象，對影像 1292071 的顯示品負造成影響，特別是在影像的邊緣區域皆須以全 黑顯示時，將更加凸顯漏光的問題。 為了降低前述的漏光問題’一般而言，液晶顯示哭中， 在上基板111的表面，會設有一矩形的邊框mi，如第二 … _示，可藉由邊框1111的_，防止光線向外界逸漏的 • 機會，如第二圖光線路徑A所示。 • 然而，由於上基板111與下基板112兩者在封合時， 兩者相對應之邊緣皆塗佈有封膠，因此，上基板1U表面 # 在形成邊框1111時，邊框的外圍勢必需預留有一定空間， 以供封合之用。並且，由於下基板112之面積皆會略大於 上基板111 ’以在下基板112表面預留空間配置電路佈線。 基於上述原因，不透光的邊框1111之寬度無法擴展至, 液晶面板11最外侧的邊緣處，使得光線仍會由液晶面板 11的邊緣未文到遮播之處漏出（如弟二圖光線路徑b所 示）；換句話說，若欲藉由增加邊框1111之寬度來增加遮 - 檔光線的效果’上基板111及下基板112之尺寸勢必得隨 p 之增加，而增加了液晶顯示器外框尺寸，這樣並不符於現 今對於液晶顯示器輕巧的要求。同時，此種方式，更將增 加不透光材料塗佈的區域，而增加製造材料的成本。 " 因此’另有一習知技術，係於液晶面板貼附遮光膠帶， . 來達到防止漏光之目的。 請參閱第三A圖’其係為一液晶面板黏貼遮光膠帶之 示意圖。而如第三B圖所示，係為第三A圖所示之液晶面 板，用於一液晶顯示器之剖面圖。如圖所示，下基板 之四邊表面貼附有遮光膠帶12，用以遮擋向外界逸漏之光 線0 然而，在實務製造上，需藉由人力將遮光膠帶12的貼 附於液晶面板。其中，遮光膠帶12的定位不易，易有貼附 歪斜之情況發生，此外，此貼附工作需以投入額外工時以 人力進行遮光邊框的貼附，不僅效率低落，減緩了產出速 度，更是徒增製造之成本。此外，在後續製程中，對液晶 顯示器進行各項可靠度測試時，遮光膠帶12受熱後，往往 容易變形翹曲，並黏附於導光板1〇1表面，影響產品的光 學特性，以及產品產出的良率。 爰是，如何在防止液晶顯示器邊緣發生漏光的情況 下’可同時減低製造成本及提升產出速度及品質，係為熟 悉此項技藝者所致力之方向。 【發明内容】 為此，本發明提出一種液晶顯示器，其中的背光模組， 具有防止漏光之功能，並可有效減低製造成本及提升產出 速度。此背光模組包括一導光板、一光源及一框架。 光源，設置於導光板之一侧，如旁側或底侧，將光線 射入導光板中。 框架，係用以承載導光板及光源’其中，框架之内緣 更具有一可防止漏光之結構。 本發明之液晶顯示器，可藉由前述框架結構之設計， 直接達到防止光線逸漏至外界之目的。除可大幅節省黏貼 遮光膠帶的人力成本外，尚可減少製程所需的組裝步驟， 增加產出的鱗，更可摒除習知_貼遮光膠帶所可能帶 來的缺陷（例如遮光膠帶黏貼位置歪斜、黏料程施力不 均，或是遮光膠帶在後續製程中，受熱變形）。 為使本發明之伽及精神能更進—步的_示，兹配 合圖式作一詳細說明如後。 【實施方式】 請參閱第四圖’其係為本發明所揭露之液晶顯示器之 -實施例之剖視示意圖。液晶顯示器2包括一液晶面板21 與一背光模組22。 液晶面板21，具有上基板211,及下基板212。液晶面 板之上下表面，可依影像的顯示與否，區分為一顯示面M 及一非顯示面A2。使用者可於顯示面A1觀看影像，獲得 所需資訊。並且，在液晶面板21的上基板211表面，設有 一不透光的邊框2111。 背光模組22，又包含一導光板221、一光源222以及 一框架223。 導光板221係設置於液晶面板21之非顯示面侧，亦即 與液晶面板21之非顯示面A2同一侧，其上可更加設各式 光學薄膜’以提供均勻的光線，自液晶面板之非顯示面A2 射入後，於顯示面A1成像。 光源222，設置於導光板之一側，例如為導光板221 的旁侧或底側。使光源222發出之光線係經由該導光板221 射出。 框架223，係用以容納導光板221及光源222。本實施 1292071 例中’為矩形之中空盒體。當然，在其他實施方式中，框 架223亦可為中空之矩形框體，環套設置於導光板22丨的 外圍。1292071 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a liquid crystal display, and more particularly to a liquid crystal display having a function of preventing light leakage from a frame of a backlight module. [Prior Art] Among various image display technologies, liquid crystal displays have been widely used in various cracks due to their advantages of small weight, small volume, low power consumption, and no radiation. Please refer to the figure-Fig., which is a schematic diagram of the operation principle of the liquid crystal display, which is mainly composed of a backlight module 10 and a liquid crystal two board u, and only the main components thereof are shown here. The light module 10 includes a light guide plate 1 , a light tube, and a frame 1 〇 2 4 blind 102 disposed at one end of the light guide plate 1 , 1 , and is mounted on the frame 'light provided by the light tube 102 After entering the light guide plate 1〇1, it is diffused and guided through the light guide plate 101, and then diffused into the liquid crystal panel 11, and is used for image display. The liquid crystal panel 11 is mainly composed of an upper substrate lu, a lower substrate Π2, and a liquid crystal layer 113. The surface of the upper substrate (1) is further provided with a filter region, and a photoresist of three colors of red, green and blue (R, G, B) is applied, so that the upper substrate in has a filtering effect of light. Please continue to refer to the second figure 'When the lamp 102 is activated, the generated light will be emitted through the light guide plate 101, and it will be easily received when it is irradiated in the inner surface of the frame (4) 3, and the frame 103 will affect bile scattering or refraction, resulting in The light escapes from the outside of the liquid 3 panel 11 and causes light leakage, which affects the display of the image 1272071. Especially when the edge region of the image is displayed in all black, the problem of light leakage is more prominent. In order to reduce the aforementioned light leakage problem, in general, the liquid crystal display is crying. On the surface of the upper substrate 111, a rectangular frame mi is provided, as shown by the second image, the light of the frame 1111 can be prevented from being emitted to the outside. The omission of the opportunity, as shown in the second diagram of the ray path A. • However, since both the upper substrate 111 and the lower substrate 112 are sealed at the edges, the corresponding edges of the two substrates are coated with a sealant. Therefore, when the frame 1111 is formed on the upper substrate 1U surface, the outer periphery of the frame must be pre-predicted. Leave some space for the seal. Moreover, since the area of the lower substrate 112 is slightly larger than that of the upper substrate 111' to reserve a space on the surface of the lower substrate 112, circuit wiring is disposed. For the above reasons, the width of the opaque frame 1111 cannot be extended to the outermost edge of the liquid crystal panel 11, so that the light will still leak out from the edge of the liquid crystal panel 11 (for example, the ray path of the second image). b)); in other words, if the effect of increasing the thickness of the bezel 1111 is increased by increasing the width of the bezel 1111, the size of the upper substrate 111 and the lower substrate 112 is bound to increase with the increase of p, and the frame of the liquid crystal display is increased. Dimensions, this does not meet the current requirements for the light weight of liquid crystal displays. At the same time, in this way, the area coated with the opaque material is increased, and the cost of manufacturing the material is increased. " Therefore, there is another conventional technique for attaching a light-shielding tape to a liquid crystal panel to prevent light leakage. Please refer to the third A figure' which is a schematic diagram of a liquid crystal panel attached to a light-shielding tape. As shown in FIG. B, it is a liquid crystal panel shown in FIG. 3A for a cross-sectional view of a liquid crystal display. As shown in the figure, a light-shielding tape 12 is attached to the four sides of the lower substrate to block the light leakage to the outside. However, in practical manufacturing, the light-shielding tape 12 is attached to the liquid crystal panel by human power. Among them, the positioning of the light-shielding tape 12 is not easy, and it is easy to cause the skewing to occur. In addition, the attaching work requires the man-made blackout frame to be attached with additional man-hours, which is not only inefficient, but also slows down the output speed. It is the cost of manufacturing. In addition, in the subsequent process, when the liquid crystal display is subjected to various reliability tests, the light-shielding tape 12 is often easily deformed and warped after being heated, and adheres to the surface of the light guide plate 1〇1, affecting the optical characteristics of the product, and the product output. Yield. Therefore, how to prevent the light leakage at the edge of the liquid crystal display can reduce the manufacturing cost and increase the output speed and quality, so that it is familiar with the direction of the artist. SUMMARY OF THE INVENTION Accordingly, the present invention provides a liquid crystal display in which a backlight module has a function of preventing light leakage, and can effectively reduce manufacturing cost and increase output speed. The backlight module includes a light guide plate, a light source and a frame. The light source is disposed on one side of the light guide plate, such as the side or the bottom side, to inject light into the light guide plate. The frame is used to carry the light guide plate and the light source. The inner edge of the frame further has a structure for preventing light leakage. The liquid crystal display of the invention can directly prevent the light from leaking to the outside by the design of the frame structure. In addition to greatly reducing the labor cost of sticking the light-shielding tape, it can reduce the assembly steps required for the process, increase the scale of the output, and eliminate the defects that may be caused by the conventional light-shielding tape (for example, the position of the light-shielding tape is skewed) The application of the adhesive material is uneven, or the light-shielding tape is deformed by heat in the subsequent process. In order to make the gamma spirit of the present invention more advanced, a detailed description will be given as follows. [Embodiment] Please refer to the fourth figure, which is a cross-sectional view of an embodiment of a liquid crystal display disclosed in the present invention. The liquid crystal display 2 includes a liquid crystal panel 21 and a backlight module 22. The liquid crystal panel 21 has an upper substrate 211 and a lower substrate 212. The upper surface of the upper surface of the liquid crystal panel can be divided into a display surface M and a non-display surface A2 according to whether the image is displayed or not. The user can view the image on the display surface A1 to obtain the desired information. Further, on the surface of the upper substrate 211 of the liquid crystal panel 21, a opaque frame 2111 is provided. The backlight module 22 further includes a light guide plate 221, a light source 222, and a frame 223. The light guide plate 221 is disposed on the non-display surface side of the liquid crystal panel 21, that is, on the same side as the non-display surface A2 of the liquid crystal panel 21, and various optical films can be further disposed to provide uniform light, which is different from the liquid crystal panel. After the display surface A2 is incident, it is imaged on the display surface A1. The light source 222 is disposed on one side of the light guide plate, for example, a side or a bottom side of the light guide plate 221 . The light emitted from the light source 222 is emitted through the light guide plate 221. The frame 223 is for accommodating the light guide plate 221 and the light source 222. In the embodiment 1292071, the case is a rectangular hollow box. Of course, in other embodiments, the frame 223 can also be a hollow rectangular frame, and the ring sleeve is disposed on the periphery of the light guide plate 22A.
更進一步地，該框架223的内緣係如階梯狀逐漸升 高’而可利用内緣的階層處承載液晶面板21。 而在本發明之一實施例中，框架223之内緣係具有一 遮光結構24,位於該液晶顯示面板之非顯示面側，用以防 止光線向外界逸漏。該遮光結構Μ，在較佳之情形下，係Further, the inner edge of the frame 223 is gradually raised in a stepwise manner, and the liquid crystal panel 21 can be carried by the layer at the inner edge. In one embodiment of the present invention, the inner edge of the frame 223 has a light blocking structure 24 on the non-display side of the liquid crystal display panel to prevent light from leaking to the outside. The shading structure is, in the preferred case,
與框架一體成形而成，為框架223内緣側壁所延伸出之凸 緣，並且遮光結構24更可與導光板221光線射出面之部分 區域位置上下重疊。當然，液晶面板21亦可放置於此凸 緣上。 、 藉此，利用此凸緣，遮擋導光板221所發出，向液晶 面板21邊緣行進之光線，達到防止光線逸漏之目的。日日 、一請繼續參閱第五圖，其係為本發明之另—實施例之剖 視示％、圖。其與第四圖所示者不同處在於’本實施例中， 框架223之内緣之階層轉折處係具有一導光結構，於 施例中，該導光結構為—斜截面25，如第五圖所示，當導 先板221向旁散射之光線，入射至斜截面烈之表面時: =反射’導向液晶面板21的邊框仙，而不致逸漏至 |。而為增強導光之效果’導光結構並不以斜截面涊 為X任何可將反射的設計皆為本發明之保護範圍， 例如為一平面，當然’亦可為一内凹之曲面。 而值得注意的是’位於框架223内緣之導光結構，並 1292071 不僅限於前述之實施方式。 請參閱第六圖，其係為本發明又一實施例之剖視示意 圖。其與弟四圖所示者不同處在於，本實施例中，框架223 内緣之導光結構，係將正對於液晶面板21處的框架223 • 的階梯狀之内緣，加以粗糙化後，使導光結構為一粗糙表 面26。如圖所示，當導光板221向液晶面板21邊緣散射 之光線，射至此導光結構時，光線受到粗縫表面26的影 響，將產生擴散反射，使光線向非特定方向行進，不易逸 • 漏至、外界，而具有防止漏光之效果。 此外，為了達到防止漏光的更倖效果，前述各實施例 中的導光結構表面或遮光結構表面，更可塗佈黑色塗料或 是吸光材料，增加其表面吸光光線之能力，降低光線在反 射後之亮度。 甚至，可結合前述第四圖及第六圖所示者，如第七圖 所示者，係為本發明再一實施例之示意圖。其中框架2烈 具有遮光結構24，且遮光結構24之上表面為具有粗链平 > 面的導光結構26，而同時具有兩者之功效。 藉由以上實施例可知，在本發明中，僅需在框架製造 時’利用簡易的模塊設計，即可使每一框架之内緣皆且有 所需之結構，而可改善液晶顯示器中的漏光問題。與習知 技術中，以黏貼遮光膠帶於液晶面板之作法相較，本發明 除可大幅節省黏貼遮光膠帶的人力成本外，尚可減少^程 所需的組裝步驟、節省組展時間以及增加產出的效率，、更 ^摒除驾知因黏貼遮光膠帶所可能帶來的缺陷。爰是，本 發明實具有長足之進步。而熟知本技術者更可在閱讀本說 1292071 明書及以上各實施例後，更加了解本發明之精神及其所具 有之各項優點或功能運用。 以上所述係利用一較佳實施例及不同實施例以詳細說 • 明本發明，其並非用以限制本發明之實施範圍，並且熟習 該項技藝者皆能明瞭，適當做些微的修改仍不脫離本發明 /之精神及範圍。 • 【圖式簡單說明】 第一圖’係為一液晶顯示器之作動原理示意圖。 弟二圖，係為一習知之液晶顯示器之剖面圖。 第二A圖’係為一液晶面板黏貼遮光膠帶之示意圖。 第二B圖，係為第三A圖所示之液晶面板，用於一液 晶顯示器之剖視示意圖。 第四圖’係為本發明一實施例之剖視示意圖。 第五圖，係為本發明另一實施例之剖視示意圖。 • 第六圖，係為本發明又一實施例之剖視示意圖。 第七圖，係為本發明再一實施例之剖視示意圖。 【主要元件符號說明】 2液晶顯示器 112下基板 10背光模組 113液晶層 11液晶面板 211上基板 12遮光膠帶 212下基板 11 1292071 21液晶面板1 221導光板 22背光模組 222光源 24遮光結構 223框架 25斜截面 1111邊框 26粗糙平面 2111邊框 101導光板 A1顯示面 102燈管 A2非顯示面 103框架 A光線路徑 111上基板 B光線路徑 12The frame is integrally formed with the frame, and is a flange extending from the inner edge of the frame 223, and the light shielding structure 24 is further overlapped with a portion of the light emitting surface of the light guide plate 221. Of course, the liquid crystal panel 21 can also be placed on the flange. Thereby, the flange is used to block the light emitted from the light guide plate 221 and travel toward the edge of the liquid crystal panel 21 to prevent light from leaking. For the day, please refer to the fifth figure, which is a cross-sectional view showing % and figure of another embodiment of the present invention. The difference from the one shown in the fourth figure is that in the embodiment, the layer transition of the inner edge of the frame 223 has a light guiding structure. In the embodiment, the light guiding structure is an oblique section 25, as in the first As shown in the fifth figure, when the light scattered by the guide plate 221 is incident on the surface of the oblique section: = reflection 'is directed to the border of the liquid crystal panel 21 without leaking to |. In order to enhance the effect of light guiding, the light guiding structure does not have an oblique section 涊 X. Any reflection design can be the protection range of the invention, for example, a plane, and of course, can also be a concave curved surface. It is worth noting that the light guiding structure is located at the inner edge of the frame 223, and 1292071 is not limited to the foregoing embodiments. Please refer to the sixth drawing, which is a schematic cross-sectional view showing still another embodiment of the present invention. The difference from the one shown in the fourth figure is that, in this embodiment, the light guiding structure of the inner edge of the frame 223 is roughened to the stepped inner edge of the frame 223 at the liquid crystal panel 21. The light guiding structure is a rough surface 26. As shown in the figure, when the light scattered by the light guide plate 221 toward the edge of the liquid crystal panel 21 is incident on the light guiding structure, the light is affected by the rough surface 26, and diffused reflection is generated to make the light travel in a non-specific direction, which is not easy to escape. It leaks to the outside world and has the effect of preventing light leakage. In addition, in order to achieve the better effect of preventing light leakage, the surface of the light guiding structure or the surface of the light shielding structure in the foregoing embodiments may be coated with a black paint or a light absorbing material to increase the ability of the surface to absorb light, and reduce the light after reflection. Brightness. In addition, as shown in the fourth and sixth figures, as shown in the seventh figure, it is a schematic diagram of still another embodiment of the present invention. The frame 2 has a light-shielding structure 24, and the upper surface of the light-shielding structure 24 is a light-guiding structure 26 having a thick-chain flat surface, and at the same time has the effect of both. According to the above embodiments, in the present invention, it is only necessary to use a simple module design in the manufacture of the frame, so that the inner edge of each frame has the desired structure, and the light leakage in the liquid crystal display can be improved. problem. Compared with the prior art, in addition to greatly reducing the labor cost of sticking the light-shielding tape, the present invention can reduce the assembly steps required for the process, save the assembly time, and increase the production. The efficiency, and more, eliminates the defects that may be caused by the adhesive tape. Therefore, the present invention has made great progress. Those skilled in the art will be able to understand the spirit of the present invention and its various advantages or functions after reading the present specification and the above embodiments. The above description of the present invention is not intended to limit the scope of implementation of the present invention, and it will be apparent to those skilled in the art that the modifications are not Without departing from the spirit and scope of the invention. • [Simple description of the diagram] The first diagram is a schematic diagram of the operation principle of a liquid crystal display. The second picture is a cross-sectional view of a conventional liquid crystal display. The second A figure is a schematic view of a liquid crystal panel adhered to the light shielding tape. Figure 2B is a cross-sectional view of a liquid crystal panel shown in Figure 3A for a liquid crystal display. The fourth figure is a schematic cross-sectional view of an embodiment of the invention. Figure 5 is a cross-sectional view showing another embodiment of the present invention. • Figure 6 is a cross-sectional view showing still another embodiment of the present invention. Figure 7 is a cross-sectional view showing still another embodiment of the present invention. [Main component symbol description] 2 Liquid crystal display 112 Lower substrate 10 Backlight module 113 Liquid crystal layer 11 Liquid crystal panel 211 Upper substrate 12 Light-shielding tape 212 Lower substrate 11 1292071 21 Liquid crystal panel 1 221 Light guide plate 22 Backlight module 222 Light source 24 Light-shielding structure 223 Frame 25 oblique section 1111 frame 26 rough plane 2111 frame 101 light guide plate A1 display surface 102 lamp A2 non-display surface 103 frame A light path 111 upper substrate B light path 12