1342438 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種背光模組結構，且特別是有關於 —種適用於平面顯示裝置的背光模組結構。 【先前技術】 者光模組為液晶顯示器（Liquid Crystal Display ; LCD ) 之基礎零件之一。由於液晶本身不會發光，必須在LCD面 板（Panel)後方加上背光源，大部分是冷陰極螢光燈管（c〇ld Cathode FlU0rescent Lamp，CCFL)，背光源投射出的光線 穿透LCD面板（panel )，進入人的眼睛形成影像，其中 面板至少包含玻璃基板（Mother Glass )、液晶、彩色漁光 片（Color Filter)、偏光板（P〇larizer)等相關材料。也就 是說，液晶顯示器必須先利用背光源投射出光源，此光線 先經過第一塊偏光板然後再經過液晶，其中液晶分子利用 電壓的變化改變液晶分子的排列方式，並進而改變穿透液 晶的光線角度。這些光線接著還必須再經過前方的彩色的 濾光膜與第二塊偏光板。由於第二塊偏光板和第一塊偏光 板角度相差90度，原本應該會將所有的光阻隔下來，但因 為兩塊偏光板之間還有液晶可以控制光線的角度，因此， 只要改變能刺激液晶的電壓值就可以控制最後出現的光線 強度與色彩’進而能在液晶面板上出現不同深淺的顏色組 合〇 因此，背光模組的性能好壞會直接影響到LCd的品 質。背光源的成本約佔LCD模組的約3%至5〇/〇，所消耗的 ⑧ 5 1342438 、 電力更佔模組的約75%’是LCD模組中相當重要的零組件。 ’ 以往大型㈣制之產品，主要為筆記型電腦（Note ' Book Personal Computer)及 LCD 監視器（LCd M〇nit〇r)， 而面板的尺寸也多在19吋以下，為了達到顯像亮度的要 求，部分高階產品採用直下式的背光模組。但因為面板尺 ' 寸較小’數支燈管平行排列即已足夠。 在開發LCD電視用之背光源時，對於顯像亮度的要求 咼於LCD監視器’（至少要求450cd/m2以上）、寬廣的觀 • 看視角（目前銷售產品規格已可達170。）、鮮明的影像對比 度（目前LCD電視產品約500:1 ;電漿電視產品約1〇〇〇:1) 及合乎標準的使用壽命（目前產品測試值約6萬小時八在 以上的規格考量下，直下式背光模組便成為目前搭配大型 ， LCD電視的技術主流，其設計的主要概念即在於為能因應 更高亮度的需求’將原本為能減輕模組重量及厚度考量的 側面光源，藉由直下式背光源將光線打散均勻，使光線轉 變為平面光源後，進入液晶面板的技術模式。 鲁 在以上的規格考量下，直下式（direct light type )背光 模組便成為目前搭配30吋以上之大型液晶顯示器的技術主 流。一般而言，直下式背光模組包括固定於反射板上之若 干圓柱型燈管以及位於燈管上之擴散板。其中，反射板係 ， 用以反射燈管所發射之光線至顯示區域，同時防止光線之 - 損失，以提升光線的使用效率。擴散板係用以對於來自燈 B之光線進行均勻散射處理，以達到均勻的面光源效果。 值得注意的是，由於大型液晶顯示器所需之背光模組 的尺寸亦較大’因此單一燈管的長度不足，尤其是到了適 ⑧ 1342438 用於更大尺寸的液晶顯示器，例如30吋以上，的背光模組， 背光源採用交錯式的燈管排列方式。如第1圖係繪示習知 背光模組之交錯式的燈管排列之示意圓。背光模組1〇〇具 有複數根燈管102成交錯平行排列，燈管1〇2的一端固定 於位於背光模組100兩側的支撐排104之内，而燈管ι〇2 的另一端則由交錯排列於背光模組100中段的支擇結構 106所固定支撐。支撐排104及支撐結構1〇6之内均源 供應接點（未繪示）以提供燈管工作電壓。 第2圖係繪示習知背光模組之交錯式的燈管排列之部 分立體示意圖。一般支揮結才冓106係、為-長方體結構，平 躺設置於背光模組反射板（未繪示）之上，其中一平面向 上由於支撐結構1 本身並不發光，因此在整個背光^ 源，表現上會造成背光不均勾之現象。第3圖係為運用習 知背光模組的平面顯示裝置之照相圖。如帛3圖所示，圓 圈300係標示習知因支撐結構而造成背光不均勻之現象， 由第3圖中可看出在背光模組的中段部分出現暗帶亮帶交 錯的It I °這樣背光不均勾的背光模組將無法運用在平面 顯不裝置之上。因此，如何繼續利用現有交錯式的燈管排 列來解決大尺寸背錢組巾燈管長度不足及同時兼顧整個 彦光的均勻性成為一個重要的課題。 【發明内容】 由於在習知背光模組的令段部分出現暗帶亮帶交錯的 現象係因支撐結構的表面之低反射特性以及表面反射太單 一化的問題而造成燈管交叉處亮度偏低。因此，本發明即 ⑧ 7 1342438 是針對習知 支撑結禮的缺41342438 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module structure, and more particularly to a backlight module structure suitable for a flat display device. [Prior Art] The optical module is one of the basic components of a liquid crystal display (LCD). Since the liquid crystal itself does not emit light, a backlight must be added behind the LCD panel, most of which are cold cathode fluorescent lamps (CCFLs), and the light projected by the backlight penetrates the LCD panel. (panel), entering the human eye to form an image, wherein the panel includes at least a glass substrate (Mother Glass), a liquid crystal, a color filter, a polarizer (P〇larizer) and the like. That is to say, the liquid crystal display must first use a backlight to project a light source, which first passes through the first polarizing plate and then passes through the liquid crystal, wherein the liquid crystal molecules change the arrangement of the liquid crystal molecules by using the voltage change, and then change the liquid crystal. Light angle. These rays must then pass through the front colored filter and the second polarizer. Since the angle between the second polarizer and the first polarizer is 90 degrees, all the light should be blocked, but because there is liquid crystal between the two polarizers to control the angle of the light, as long as the change can stimulate The voltage value of the liquid crystal can control the intensity and color of the last appearing light, and thus the color combination of different shades can appear on the liquid crystal panel. Therefore, the performance of the backlight module directly affects the quality of the LCd. The cost of the backlight is about 3% to 5 〇 / LCD of the LCD module, and the consumption of 8 5 1342438 and about 75% of the power of the module is a very important component in the LCD module. 'In the past, the large (four) system products were mainly notebook computers (Note 'Book Personal Computer) and LCD monitors (LCd M〇nit〇r), and the size of the panels was also below 19 inches, in order to achieve the brightness of the image. Requirement, some high-end products use a direct-lit backlight module. However, it is sufficient because the panel feet are smaller than the number of tubes. When developing backlights for LCD TVs, the requirements for image brightness are lower than those of LCD monitors (at least 450 cd/m2 or more), and wide viewing angles (currently available in product specifications up to 170.) Image contrast (currently LCD TV products are about 500:1; plasma TV products are about 1〇〇〇:1) and meet the standard service life (current product test value is about 60,000 hours and eight in the above specifications, direct type The backlight module has become the mainstream technology for large-scale LCD TVs. The main concept of the design is to enable the side light source, which can reduce the weight and thickness of the module, in order to meet the requirements of higher brightness. The backlight breaks up the light evenly, turning the light into a planar light source, and then enters the technical mode of the liquid crystal panel. Under the above specifications, the direct light type backlight module has become a large one with more than 30 inches. The mainstream technology of liquid crystal displays. Generally, the direct type backlight module includes a plurality of cylindrical lamps fixed on the reflector and an expansion on the lamps. a reflector, wherein the reflector is used to reflect the light emitted by the lamp to the display area while preventing the loss of light to improve the efficiency of the light. The diffuser is used to uniformly scatter the light from the lamp B. In order to achieve a uniform surface light source effect. It is worth noting that the size of the backlight module required for large liquid crystal displays is also large, so the length of a single lamp tube is insufficient, especially for the size of 8 1342438 for larger sizes. The liquid crystal display, for example, a backlight module of 30 吋 or more, uses a staggered arrangement of the light pipes. The first figure shows a schematic circle of the staggered arrangement of the lamp modules of the conventional backlight module. 1〇〇 has a plurality of lamps 102 arranged in a staggered parallel arrangement, one end of the lamp 1〇2 is fixed in the support row 104 on both sides of the backlight module 100, and the other end of the lamp ι〇2 is staggered The support structure 106 of the middle portion of the backlight module 100 is fixedly supported. The support row 104 and the support structure 1〇6 are supplied with contacts (not shown) to provide the working voltage of the lamp. A partial perspective view of a staggered arrangement of light tubes of a conventional backlight module. The general support structure is a 106-series, a rectangular parallelepiped structure, and is placed on a backlight module reflector (not shown), one of which is Since the support structure 1 itself does not emit light in the plane, the backlight will be unevenly displayed in the entire backlight source. Fig. 3 is a photograph of a flat display device using a conventional backlight module. As shown in Fig. 3, the circle 300 indicates that the backlight is uneven due to the conventional support structure. It can be seen from Fig. 3 that the backlight is not in the middle portion of the backlight module. The backlight module of the hook can not be used on the flat display device. Therefore, how to continue to use the existing interlaced lamp arrangement to solve the problem of insufficient length of the large-sized money towel and the uniformity of the entire Yanguang Become an important topic. SUMMARY OF THE INVENTION The phenomenon that the dark band is interlaced in the segment portion of the conventional backlight module is caused by the low reflection characteristic of the surface of the support structure and the problem that the surface reflection is too singular, resulting in low brightness at the intersection of the lamps. . Therefore, the present invention, 8 7 1342438, is for the lack of conventional support.
以使交錯式的燈管 運用在平面顯示裝In order to use the interlaced lamp in the flat display
複數個支#結構及複數個光源^支稽排分列於反射板相對 _ # ^側冑數個支撐結構成兩排平行交錯排列設置於反射 板1Μ又並與支樓排平行設置，每一光源設置於支揮排其中 與支擇結構其中之_，其中每—支#結構至少部分表 面塗佈反射塗層而形成反射面，使支揮結構得以藉由散射 ' 位於其側之光源產生之光線而達成均勻化光線的目的。另 外，尚有電極設置於支撐排及支撐結構中以電性連結光 源。而這些光源可以為螢光燈管，特別是冷陰極螢光燈管。 依照本發明一較佳實施例，其中支撐結構係為塑膠材 • 質，並且可以為多角柱狀結構。多角柱狀結構可以為對稱 的多角柱狀結構或是不對稱之多角柱狀結構，多角柱狀結 構之^角數至少為3。多角柱狀結構之表面適用於散射光線 之反射面可以分別為鏡面反射面或擴散反射面。 , 依照本發明另一較佳實施例，至少一反射面可以為弧 - 面，而弧面可以為凸弧面或是凹弧面。 依照本發明再一較佳實施例，支撐結構係為塑膠材 質’且具有不規則排列的複數個反射面，反射面可以為鏡 面反射面或擴散反射面或是至少一反射面可以為弧面，而 ⑧ 1342438 . 弧面可以為凸弧面或是凹弧面。 根據本發明之目的，本發明所提出背光模組結構中的 支撐結構的表面可以產生多方向反射或散射的效用因而達 成均勻化反射光的目的，進而能夠使背光模組結構提供均 勻化的者光。支樓結構的表面可以為具有反射塗層之不規 則複數個反射面、一球反射面、一液滴反射面、一拋物球 反射面或疋任何形狀反射面可使單一方向的入射光產生不 同方向的反射光，進而達成均勻化反射光的目的，進而能 籲 肖使背光模組結構提供均勻化的背光。其中，支撐結構的 表面具有不規則複數個反射面時可使支撐結構形成一個七 面以上之結構體。 【實施方式】 為能使本發明所提供的背光模組結構更加清楚起見， 在本發明數個實施例中以不同的支律結構為例詳細說明如 何實施本發明，當然，本發明並不僅只限定於實施例所為 • 以露，凡可以使單一方向的入射光產生不同方向的反射 光的支樓結構亦可以如實施例的揭露來達成均勾化反射光 的目的者均應為本發明的料。在實施例中係以背光模組 之交錯式的燈管排列之部分立體示意圖來進行說明。 Λ π參照第4 ® JL第6圖’其繪示依照本發明—較佳實 • ㈣的背光模組之交錯式的燈管排列之部分立體示意圖。 ^二中，支撐結構106為-5角柱體結構並平躺於反 = 2::)上’除T與反射板接觸面之外，其餘表面 ⑧ 句不與反射板平行。第5圖中，支樓結構Η)6為- 3角柱 1342438 體，，構並平躺於反射板（未繪示）上，除了與反射板接觸 面之外，其餘表面均不與反射板平行。第6圖中支撐結 構06為4角柱體結構並設置於反射板（未緣示）上， 所有的表面均不與反射板平行。另外，支樓結構的表面具 f高反射率之特殊鍍膜或薄層，例如可以形成金屬鍍膜或 疋多層磨鑛膜以形成鏡面反射或是擴散反射。 請參照第7圖至第8圖，其緣示依照本發明另一較佳A plurality of branches and a plurality of light sources are arranged in a row on the opposite side of the reflector. The support structures are arranged in two rows in parallel and arranged in parallel with the reflector 1 and in parallel with the branch rows. The light source is disposed in the support row and the support structure, wherein at least part of the surface of each of the branches is coated with a reflective coating to form a reflective surface, so that the support structure is generated by scattering the light source located on the side thereof. Light to achieve the purpose of homogenizing light. In addition, electrodes are disposed in the support row and the support structure to electrically connect the light source. These light sources can be fluorescent tubes, especially cold cathode fluorescent tubes. According to a preferred embodiment of the invention, the support structure is of a plastic material and may be a polygonal columnar structure. The polygonal columnar structure may be a symmetrical polygonal columnar structure or an asymmetrical polygonal columnar structure, and the polygonal columnar structure has a number of corners of at least 3. The surface of the polygonal columnar structure is suitable for scattering light. The reflecting surface may be a specular reflecting surface or a diffuse reflecting surface, respectively. According to another preferred embodiment of the present invention, the at least one reflective surface may be an arc-face, and the curved surface may be a convex arc surface or a concave arc surface. According to still another preferred embodiment of the present invention, the support structure is a plastic material and has a plurality of reflective surfaces that are irregularly arranged. The reflective surface may be a specular reflective surface or a diffuse reflective surface or at least one reflective surface may be a curved surface. And 8 1342438. The curved surface can be a convex curved surface or a concave curved surface. According to the purpose of the present invention, the surface of the support structure in the backlight module structure of the present invention can generate multi-directional reflection or scattering effects, thereby achieving the purpose of uniformizing the reflected light, thereby enabling the backlight module structure to be uniformized. Light. The surface of the branch structure may be an irregular plurality of reflecting surfaces with a reflective coating, a spherical reflecting surface, a droplet reflecting surface, a parabolic reflecting surface or any shape reflecting surface to make the incident light in a single direction different. The reflected light in the direction, in order to achieve the purpose of uniformizing the reflected light, can further enable the backlight module structure to provide a uniform backlight. Wherein, when the surface of the support structure has an irregular plurality of reflecting surfaces, the supporting structure can form a structure of more than seven sides. [Embodiment] In order to make the structure of the backlight module provided by the present invention more clear, in the several embodiments of the present invention, different embodiments of the structure are taken as an example to explain how to implement the present invention. Of course, the present invention is not only It is only limited to the embodiment. • The structure of the branch building that can make the incident light in a single direction to generate reflected light in different directions can also be achieved by the disclosure of the embodiment to achieve the purpose of uniformly reflecting the reflected light. Material. In the embodiment, a partial perspective view of the arrangement of the interlaced lamps of the backlight module will be described. π π refers to a fourth perspective view of an interlaced lamp arrangement of a backlight module in accordance with the present invention, which is a preferred embodiment of the present invention. In the second embodiment, the support structure 106 is a -5-corner cylinder structure and lies flat on the reverse = 2::). In addition to the contact surface of the T and the reflector, the remaining surfaces are not parallel to the reflector. In Fig. 5, the structure of the branch structure 66 is a body of -3 corner posts 1342438, and is laid flat on a reflector (not shown), except that the surface is not in parallel with the reflector. . In Fig. 6, the support structure 06 is a 4-corner cylindrical structure and is disposed on a reflecting plate (not shown), and all surfaces are not parallel to the reflecting plate. In addition, the surface of the branch structure has a special coating or thin layer with high reflectivity, for example, a metal plating film or a multi-layer grinding film can be formed to form specular reflection or diffuse reflection. Please refer to FIG. 7 to FIG. 8 , which is another preferred embodiment according to the present invention.
實施例的背光模組之交錯式的燈管㈣之部分立體示意 圖在第7圖令，支樓結構1 〇6為一類3角柱體結構並平 躺於反射板（未繪示）i ’除了與反射板接觸面之外，其 餘表面均不與反射板平行且為—凹弧面，而第8圖則為j 凸弧面。同樣的，支樓結構的表面也具有高反射率之特殊 鍍膜或薄層，例如可以形成金屬鍍膜或是多層磨鍍膜以形 成鏡面反射或是擴散反射。 ,、在本發明再-較佳實施例亦可採用不規則的複數個反Part of the perspective view of the staggered lamp tube (4) of the backlight module of the embodiment is in the seventh figure, the branch structure 1 〇6 is a type of 3-corner column structure and lies flat on the reflector (not shown) i' except Except for the contact surface of the reflector, the remaining surfaces are not parallel to the reflector and are concave curved surfaces, while Fig. 8 is a j convex curved surface. Similarly, the surface of the building structure also has a special coating or thin layer with high reflectivity, for example, a metal coating or a multilayer coating can be formed to form specular reflection or diffuse reflection. In the re-best embodiment of the present invention, an irregular plurality of inverses may also be employed.
:塗：表面’其"以有至少—個表面與反射板平行或者 全部表面都不與反射板平行。 尽發月再一較佳實施例中揭露支樓結構具有 反射塗層之單一或多個弧形反射面，例如—球反射面、一 =射面、-拋物球反射面或一不對稱之球反射面或是 具任思組和而成的多弧形反射面等等。 第9圖係為運用本發明之背光 牙尤模組的平面顯示裝置之 照相圖。圓圈900係標示如圓圈3〇 7知不之位置，比齡 第3圖與第9圖可清楚看出，運用太 碟用本發明所揭露之背 組確實可以消除位於中段部分 、 唯帑（如第3圖圓圈300 ⑧ 10 1342438 所示）’而達到均勻化背光的目的。 由上述本發明較佳實施例可知，應用本發明的目的在 於提供支撐結構，此一支撐結構可使任何單一方向的入射 光產生不同方向的反射光，進而達成均勻化反射光的目 的’進而能夠使背光模組結構提供均勻化的背光。 運用本發明所提供之背光模組結構，由於其中的支撐 結構可使任何H向的人射光產生不同方向的反射光， 進而達成均勻化反射光的目的，進而能夠使背光模組結構 提供均勻化的背光。因此，本發明所提供之背光模組結構 可利用現有交錯式的燈管排列來解決大尺寸背光模組中燈 管長度不足及同時兼顧整個背光的均勻性。 雖然本發明已以一較佳實施例揭露如上，然其並非用 以限定本發明，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潤飾，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。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖係繪示習知背光模組之交錯式的燈管排列之示 意圖； 第2圖係繪示習知背光模組之交錯式的燈管排列之部 分立體示意圖； 1342438 第 3圖係為運用習知背光模組的平: Coating: The surface 'its" has at least one surface parallel to the reflecting plate or all surfaces are not parallel to the reflecting plate. In another preferred embodiment, a single or a plurality of curved reflecting surfaces having a reflective coating, such as a ball reflecting surface, a = emitting surface, a parabolic reflecting surface, or an asymmetrical ball, are disclosed in the preferred embodiment. The reflecting surface is a multi-arc reflecting surface with a set of thoughts and the like. Fig. 9 is a photograph showing a flat display device using the backlight module of the present invention. The circle 900 is marked as the position of the circle 3〇7, and it can be clearly seen from the third and the ninth figures of the age. The use of the tarpaulin with the back group disclosed by the present invention can indeed eliminate the part located in the middle section, Figure 3 shows the purpose of homogenizing the backlight by the circle 300 8 10 1342438). It is to be understood from the above-described preferred embodiments of the present invention that the object of the present invention is to provide a support structure which can cause incident light of any single direction to generate reflected light in different directions, thereby achieving the purpose of uniformizing reflected light. The backlight module structure is provided with a uniform backlight. By adopting the backlight module structure provided by the invention, the support structure can make any H-direction person to emit light to generate reflected light in different directions, thereby achieving the purpose of uniformizing the reflected light, thereby enabling the backlight module structure to be uniformized. Backlighting. Therefore, the backlight module structure provided by the present invention can utilize the existing interlaced lamp tube arrangement to solve the problem of insufficient lamp length in the large-size backlight module and at the same time taking into account the uniformity of the entire backlight. Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: Figure 1 shows the interlacing of conventional backlight modules. Schematic diagram of the arrangement of the lamp tubes; Fig. 2 is a partial perspective view showing the arrangement of the interlaced lamps of the conventional backlight module; 1342438 Fig. 3 is a flat view using a conventional backlight module
面顯示裝置之照相 …第4圖至第6圖係繪示依照本發明—較佳實施例的背 光模組之交錯式的燈管排列之部分立體示意圖； 第7圖至第8圖係繪示依照本發明另_較佳實施例的 背光模組之交錯式的燈管排列之部分立體示意圖；以及 第9圖係為運用本發明之背光模組的平面顯示裝置之4th to 6th is a partial perspective view showing the arrangement of the staggered lamp tubes of the backlight module according to the preferred embodiment of the present invention; FIGS. 7 to 8 are diagrams showing A partial perspective view of an interlaced lamp arrangement of a backlight module according to another preferred embodiment of the present invention; and a ninth diagram of a flat display device using the backlight module of the present invention
【主要元件符號說明】 10(^背光模組 102 :燈管 104 :支撐排 106 :支撐結構 300 、 900 :圓圈 ⑧ 12[Main component symbol description] 10 (^ backlight module 102: lamp tube 104: support row 106: support structure 300, 900: circle 8 12