201100927 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種背光模組，特別是關於一種應用於平面顯示器中 的液晶顯示器之背光模組。 【先前技術】 近年來隨著光電技術與半導體製造技術之成熟，平面顯示器(FlatPanel Display)便蓬勃發展起來，其中液晶顯示器(LiquidCrystalDisplay/LCD)基於 0 其低電壓操作、無輻射線散射、重量輕以及體積小等優點，更逐漸取代傳 統的陰極射線管顯示器而成為近年來顯示器產品之主流。液晶顯示器主要 包括一液晶顯示面板(Liquid Crystal Display Panel)及一背光模組(backlight module) ’其中背光模組係用以提供此液晶顯示面板所需之面光源，而其中 以導光板(Light Guide Plate)為背光模組中提供液晶顯示器充分光源的關鍵 組件。 一般而言，背光模組可分為側光式與直下式兩種，其中側光式背光模 組之光源係配置於導光板之側邊，以便於提供液晶顯示器所需之光源。請 參考第1圖’為一習知的側光式背光模組中之導光板9之示意圖，導光板9 ^ 包含有複數個凹部位置91及多個從背板穿過凹部位置91的支撐柱92。支 撐柱92係主要將導光板9與其他背板、反射片或光學膜片…等固定於背光 模組中。而光源8射出之光線會射入導光板9 ’其中A部份之區域為顯示 品質之可視區A，但是因為光源8射入導光板9之光線會從凹部位置91局 部不均勻漏出，發生一漏光現象(light leakage)，如第1圖中之B所示，而 此背光模組會發生顯示晝面亮度不均勻的現象(Mura)，進一步更會降低其顯 示品質之可視區的光學品味。 緣是’有必要提供一種能提供均勻亮度的背光模組，以解決前述之相 關問題’能夠防止局部光線漏出至可視區而降低顯示器之顯示品質。 3 201100927 【發明内容】 為了解決上述先前技術不盡理想之處，本發明提供—種顯示器之背光 模組，其中背光模組主要包含有至少一光源裝置、殼體、導光板、複數個 固定結構及複數個遮光元件。殼體包含有一底板。導光板，具有上表面、 下表面及側表面，其邊緣具有複數個開口部，且下表面朝向殼體。複數個 固定結構，可凸設於底板，與導光板的開口部互相對應且穿入導光板的開 口部。複數個遮光元件’其光穿透率小於50%且設置於導光板的開口部。 因此，本發明之主要目的係提供一種顯示器之背光模組，其中背光模 組至少包含有-導光板，藉由複數個遮光元件設置於導光板的開口部，可 防止發生漏光現象’以翻較佳的光均自性，進而提_示品質之光學品 味。 【實施方式】 由於本發明係揭露-種顯示器m模組，其中所·之光學原理與 基本架構，已為相關技術領域具有通常知識者所能明瞭故以下文中之說 明，不再作完整描述。同時，以下文中所對照之赋，係表達與本發明特 徵有關之結構示意，並未亦不需要依據實際尺寸完整繪製合先敛明。 首先請參考第2 «，係本發明提出之第一較佳實施例，為一麵示器 之背光模組1G，主要包含有至少—光源裝置丨、殼體2、導光板4、複數個 固定結構5及複數個遮光元件45。殼體2包含有一底板3。導光板4具有 下表面42及側表面43，請參考第3圖，在導光板4邊緣具有 複數個開口部44。請繼續參考第2圖，其中導光板4係由下表面42朝向殼 體2方向設置於底板3上。複數_定結構5，可凸設於底板3，且與導光 板4的開口部44互相對應且穿入導光板4的開口部私，藉此以固定導光板 4』板3。此外’為了增加光的利用率，於導光板4之下表面42，進一步 可:置至^反射片7，故複數個固定結構5，進一步可固定導光板*、反 射片7與紐3。光《置丨為冷_縣賴⑽⑸純— 201100927201100927 VI. Description of the Invention: [Technical Field] The present invention relates to a backlight module, and more particularly to a backlight module for a liquid crystal display used in a flat panel display. [Prior Art] In recent years, with the maturity of optoelectronic technology and semiconductor manufacturing technology, flat panel display (FlatPanel Display) has flourished, and liquid crystal display (LiquidCrystalDisplay/LCD) based on 0 low voltage operation, no radiation scattering, light weight As well as the advantages of small size, it has gradually replaced the traditional cathode ray tube display and has become the mainstream of display products in recent years. The liquid crystal display mainly includes a liquid crystal display panel and a backlight module. The backlight module is used to provide a surface light source required for the liquid crystal display panel, and the light guide plate (Light Guide) Plate) is a key component for providing a sufficient light source for liquid crystal displays in backlight modules. Generally, the backlight module can be divided into two types: an edge light type and a direct type. The light source of the edge light type backlight module is disposed on the side of the light guide plate to provide a light source required for the liquid crystal display. Please refer to FIG. 1 , which is a schematic diagram of a light guide plate 9 in a conventional edge-lit backlight module. The light guide plate 9 ^ includes a plurality of recessed positions 91 and a plurality of support columns from the back plate through the recessed position 91. 92. The support post 92 mainly fixes the light guide plate 9 and other back plates, reflection sheets, optical films, and the like in the backlight module. The light emitted from the light source 8 is incident on the light guide plate 9'. The area of the portion A is the visible area A of the display quality. However, since the light of the light source 8 entering the light guide plate 9 is partially unevenly leaked from the concave portion 91, a one occurs. Light leakage, as shown by B in Fig. 1, causes a phenomenon in which the backlight module exhibits uneven brightness (Mura), and further reduces the optical taste of the visible area of the display quality. The edge is that it is necessary to provide a backlight module capable of providing uniform brightness to solve the aforementioned related problems, which can prevent local light from leaking out into the visible area and reduce the display quality of the display. The present invention provides a backlight module for a display, wherein the backlight module mainly includes at least one light source device, a housing, a light guide plate, and a plurality of fixed structures. And a plurality of shading elements. The housing includes a bottom plate. The light guide plate has an upper surface, a lower surface, and a side surface, the edge of which has a plurality of openings, and the lower surface faces the housing. A plurality of fixed structures are protruded from the bottom plate and correspond to the opening portions of the light guide plate and penetrate into the opening portion of the light guide plate. The plurality of light-shielding members have a light transmittance of less than 50% and are provided in the opening of the light guide plate. Therefore, the main object of the present invention is to provide a backlight module for a display, wherein the backlight module includes at least a light guide plate, and a plurality of light shielding elements are disposed on the opening portion of the light guide plate to prevent light leakage. The good light is self-sufficient, which in turn gives the optical taste of quality. [Embodiment] Since the present invention discloses a display m module, the optical principle and basic architecture of the present invention are well known to those skilled in the relevant art, and will not be fully described. At the same time, the reference to the following is a schematic representation of the structure associated with the features of the present invention, and does not require a complete mapping of the actual dimensions. Referring to FIG. 2, the first preferred embodiment of the present invention is a backlight module 1G of one side, which mainly includes at least a light source device, a housing 2, a light guide plate 4, and a plurality of fixed Structure 5 and a plurality of shading elements 45. The housing 2 includes a bottom plate 3. The light guide plate 4 has a lower surface 42 and a side surface 43. Referring to Fig. 3, a plurality of openings 44 are formed at the edge of the light guide plate 4. Referring to Fig. 2, the light guide plate 4 is disposed on the bottom plate 3 from the lower surface 42 toward the casing 2. The plurality of fixed structures 5 are protruded from the bottom plate 3 and correspond to the opening portions 44 of the light guide plate 4 and penetrate the opening portion of the light guide plate 4, thereby fixing the light guide plate 4's plate 3. Further, in order to increase the utilization of light, the lower surface 42 of the light guide plate 4 can be further disposed to the reflection sheet 7, so that the plurality of fixing structures 5 can further fix the light guide plate*, the reflection sheet 7, and the button 3. Light "set to cold" County Lai (10) (5) pure - 201100927
Lamp/CCFL)或發光二減(1^>)陣麟均可，係設置於導光板*之側邊。 另外，特職餐是’本發日綺述之複數細定結構5除可凸設於底 板3外，亦可凸設於殼體2上，但並不以此為限，舉凡本發明固定結… 可延伸至導光板4關π部44,進而達將紘4之用，皆應本發明 所述固定結構5及其應用範疇之内。 請繼續參考第3 ，重要的是，為了防止發生漏光現象，導光板4的 開口部44設置了複數個光穿透率小於5〇%的遮光元件必。並且這些遮光元 件45之遮光面積不小於開口部44的面積，尤以大於開口部44的面積為佳。 〇在此要特舰_是，這些較元件45的材f可以為—轉性緩衝材料， 例如：膠帶、或泡綿等，可支持導光板因受熱造成的膨脹現象。遮光元件 45亦可為波長555奈米光穿透率小於5〇%的材料，較佳者為波長奶奈米 光穿透率小於25/〇的材料，可以有效地遮蔽住開口部μ，藉此可以防止從 光源裝置1射入導光板4之光線從開口部私局部不均勻漏出，進而可以提 升顯^質之光學品味。當然，上述之遮光元件45之材料，可視實際製作 需求使用其他符合本實施例條件之材料。 〃 進-步’上述之複數個遮光元件45，可用以貼附、印刷、設置、或喷 印的方式形成於導光板4的上表面41的開口部糾。 〇 3清參考第4Α圖’本發明進一步提供第二較佳實施例，為另一種顯示器 之背光模組1G。本實棚與前述第-較佳實關最大的差異在於，本實施 數個遮光元件45可用㈣附、_、設置、或喷印的方式形成於光 、組6鄰近導光板4之表面，至於本實施例中的顯示器之背光模組⑺ 之其他特_如前1«-難獅靖述。 、、 :參考第4Β圖，本發明進一步提供第三較佳實施例，為另一種顯示器 、'模組1G。本實_贿述第-較佳實關最大的差異在於，本實施 5 201100927 例之複數個遮光元件45可肋麵、印刷、設置射印的方式形成於上述 之複數個光學刻61之間，至於本實施例中的顯示器之背光模組⑴之其 他特徵則如前述第一較佳實施例所述。 、 請參考第4C圖’本發騎—步提供第四較佳實闕，為另—種顯示器 之背光模組1G。本實_與前述第__雛實施·大的差異在於，本實施 例之複數舞光元件45可用㈣附、_、設置、或噴印的方式形成於光 學膜片組6遠縛输4之表面，至於本實補巾_ 之其他特類如《第-錄麵麟述。 以上所述僅為本發明之較佳實施例，並非用以限定本發明之申請專利 權利；同時社的描述’對_知本技術領域之專門人士應可日膽及實施， 二”離本發明所揭示之精神下所完成的等效 含在申請專利範圍中。 【圖式簡單說明】 ’為側光式背光模組中之導光板的先前技術。 第圖為〜】視圖，係根據本發明提出 光模組剖面的結構示意圖。 师貫酬為種貧 第3圖為一示意圖’係根據本發 數個遮光元件之導光板。 k出之第-較佳實施例中，具有複 第4A圖為一示意圖，係根據本 遮光元件騎導光板之絲。 叫佳實劇巾’複數個 第4B圖為一示意圖，係根據本發明 遮光元件在複數個光學膜片之間。 第二較佳實施例中’複數個 之第四較佳實施例中，複數個 第4C圖為一示意圖’係根據本發明提出 遮光元件遠離導光板之表面。 201100927 【主要元件符號說明】 導光板(先前技術） 凹部位置(先前技術） 支撐柱(先前技術） 光源(先前技術） 可視區(先前技術） 漏光現象(先前技術） 背光模組 光源裝置 殼體 底板 導光板 上表面 下表面 侧表面 開口部 遮光元件 固定結構 光學膜片組 光學膜片 7 反射片 7Lamp/CCFL) or illuminating minus (1^>) can be placed on the side of the light guide plate*. In addition, the special-purpose meal is a plurality of detailed structures 5 which can be protruded from the bottom plate 3 and can be protruded on the casing 2, but it is not limited thereto. ... can be extended to the π portion 44 of the light guide plate 4, and then used for the 纮4, which should be within the scope of the fixed structure 5 of the present invention and its application. Please continue to refer to the third. It is important that the opening portion 44 of the light guide plate 4 is provided with a plurality of light shielding elements having a light transmittance of less than 5% by weight in order to prevent light leakage. Further, the light shielding area of the light shielding members 45 is not smaller than the area of the opening portion 44, and particularly preferably larger than the area of the opening portion 44. In this case, the special ship _ is that the material f of the component 45 can be a transducing cushioning material, such as a tape or a foam, which can support the expansion of the light guide plate due to heat. The light-shielding element 45 may also be a material having a light transmittance of less than 5% by wavelength of 555 nm, preferably a material having a wavelength of nanometer light transmittance of less than 25/〇, which can effectively cover the opening μ. The light that is incident on the light guide plate 4 from the light source device 1 is prevented from leaking unevenly from the opening portion, and the optical taste of the display can be improved. Of course, the material of the above-mentioned light-shielding member 45 can be used according to the actual production requirements. The plurality of light-shielding elements 45 described above may be formed on the opening portion of the upper surface 41 of the light guide plate 4 by attachment, printing, setting, or printing. BRIEF DESCRIPTION OF THE DRAWINGS The present invention further provides a second preferred embodiment, which is a backlight module 1G of another display. The biggest difference between the present embodiment and the foregoing first-best implementation is that the plurality of shading elements 45 can be formed on the surface of the light, group 6 adjacent to the light guide plate 4 by means of (4) attachment, _, setting, or printing. The other features of the backlight module (7) of the display in this embodiment are as follows: Referring to Figure 4, the present invention further provides a third preferred embodiment, which is another display, 'module 1G. The biggest difference between the present invention and the preferred embodiment is that the plurality of light-shielding elements 45 of the embodiment of the present invention 5 can be formed between the plurality of optical engraves 61 by means of ribs, printing, and printing. Other features of the backlight module (1) of the display in this embodiment are as described in the foregoing first preferred embodiment. Please refer to FIG. 4C for the fourth embodiment of the present invention, which is a backlight module 1G of another display. The difference between the present embodiment and the foregoing embodiment is that the plurality of dance elements 45 of the present embodiment can be formed in the optical film group 6 by means of (4) attachment, _, setting, or printing. Surface, as for the other special categories of the real towel _ such as "the first - recorded face Lin. The above description is only a preferred embodiment of the present invention, and is not intended to limit the patent application rights of the present invention. The description of the same is to be understood by the skilled person in the technical field of the present invention. The equivalents of the disclosed spirit are included in the scope of the patent application. [Simplified description of the drawings] 'The prior art of the light guide plate in the edge-lit backlight module. The first view is a view according to the present invention. A schematic diagram of the structure of the optical module section is proposed. The third figure is a schematic diagram of a light guide plate according to several light-shielding elements of the present invention. In the first preferred embodiment, there is a complex 4A picture. For a schematic view, the wire of the light guide plate is worn according to the light-shielding element. A plurality of FIG. 4B is a schematic view showing a light-shielding element according to the present invention between a plurality of optical films. In the fourth preferred embodiment of the plurality of embodiments, a plurality of FIG. 4C is a schematic diagram according to the present invention. The light shielding member is disposed away from the surface of the light guide plate according to the present invention. 201100927 [Explanation of main component symbols] Light guide plate (previous technique) Concave position (previous technique) support column (prior art) light source (prior art) visible area (prior art) light leakage phenomenon (prior art) backlight module light source device housing bottom plate light guide plate surface lower surface side surface opening portion shading Component fixing structure optical film group optical film 7 reflection sheet 7