M263512 八、新型說明： 【新型所屬之技術領域】 本創作係相關於一種直下式背光模組，特別是指一種具有 支撐結構之直下式背光模組。 【先前技術】 現今，液晶顯示器已普遍在各種資訊顯示裝置使用， 其主要結構可粗分成面板模組與背光模組兩大部分，面板 模組大略包括ITO導電玻璃基板、液晶層、配向膜、彩色 濾光片、偏光片、驅動1C等元件；背光模組主要包括光源、 導光板、稜鏡片、擴散板與反射片及各式各樣之光學膜， 猎由月光模組提供面板模組光源，以達到資訊顯示之目 的。液晶顯示器產品整體的表現受到所有内部元件的交互 影響，其中背光模組在螢幕亮度、均勻度、對比與視角上 扮演了重要角色。 ' 在背光模組中，使用的光源有冷陰極管(coldcathode Fluorescent Lamp; CCFL)、外置電極螢光燈管（ExternalM263512 8. Description of the new type: [Technical field to which the new type belongs] This creation is related to a direct type backlight module, especially a direct type backlight module with a supporting structure. [Previous technology] At present, liquid crystal displays have been widely used in various information display devices. The main structure can be roughly divided into two parts: a panel module and a backlight module. The panel module roughly includes an ITO conductive glass substrate, a liquid crystal layer, an alignment film, Color filters, polarizers, 1C and other components; backlight modules mainly include light sources, light guide plates, cymbals, diffusers and reflectors, and various optical films. Moonlight modules provide panel module light sources To achieve the purpose of information display. The overall performance of LCD products is affected by the interaction of all internal components. Among them, the backlight module plays an important role in screen brightness, uniformity, contrast and viewing angle. '' In the backlight module, the light sources used are cold cathode tube (CCFL), external electrode fluorescent tube (External
Electrode Fluorescent Lamp ; EEFL)或發光二極體(LightElectrode Fluorescent Lamp (EEFL) or Light Emitting Diode (Light
Emitted Diode ; LED)。其中發光二極體是由半導體材料所 製成之發光元件，元件具有兩個電極端子，在端子間施加 電壓，經由電子電洞之結合將能量以光的形式激發釋出， 其具有體積小、壽命長、低驅動電壓'耗電量低、耐震性 佳專優點，因此越來越受到重視。 而背光模組一般依光源的位置更可區分為端緣式與直 下式兩種，端緣式乃將光源置於背光模組側端面，可減少 背光模組的厚度，故多數使用於攜帶型液晶顯示器，直下 M263512 式係將光源置放於背光模組下方，亮度可獲得較好的均一 性，且因具有較大裝設空間，可裝設較多的光源，適合於 需要南亮度、廣視角的顯示裝置中。 請參閱圖一A及圖一β ，此係為習知以發光二極體為 光源之直下式背光模組之組立圖及其剖面圖，此背光模組 主要包括一電路基板1、複數個發光單元2以及一反射片3。 在電路基板1上裝置有複數個發光單元2，在複數個 發光單元2、中，每個發光單元2均包括有一底座21、一發 光二極體22。底座21設於電路基板丨上，在底座21之兩 侧分別具有電極21 la、21 lb與電路基板1電性連接。發光 二極體22則設於底座21内，與電極21 la、21 lb電性連接。 反射片3具有複數個開孔31，開孔31數量與發光單 元2數量相同，反射片3利用開孔31，套置於發光單元2 之底座21上，僅使發光二極體22主要發光部分從開孔31 露出。 請參閱圖一 C，其係為圖一 A所示實施例中一發光單 元2發光範圍示意圖。如圖所示，當兩電極2Ha、21比 導通使發光二極體22發光時，發光二極體22所發出之光 線，大部分向前方的出光面（A側)行進，部分向兩側甚或 向後方(B側）行進之光線，則藉由反射片3表面的反射， 將發光二極體22向B側散射之光線，反射回出光面（a 側），而增加背光模組的出光效率。 在此要特別注意的是，因反射片3係置放於每一發光 單元2之底座21上方，藉由底座21頂端的支撐而不致與 M263512 底座21兩侧下方電極211a、211b相接觸，使電極2Ua、 211b產生g又損。然而，卻也因為反射片3置放於底座μ 上方’而導致發光二極體22部分儀發出之光線受到反射 片3的遮擋’無法反射回a侧的出光面，而降低了出光的 效率。 爰疋，如何藉由改良背光模組之結構，而能有效提高 背光模組之出光效率，係為熟悉此項技藝者所致力之方向。 【新型内容】 本創作之一目的在於提供一背光模組，其具有一支撐 結構，可藉由支撐結構所提供之支撐，而改善反射片的設 置位置，以增進背光模組之出光效率。 本創作所揭露之背光模組，其包括一電路基板、複數 個發光單元、複數個支撐結構及一反射片。 複數個發光單元，係位於電路基板上，其中每一發光 單元皆具有一底座及一發光二極體，發光二極體係嵌入於 底座内，且底座之兩側各具有一電極，發光二極體係透過 電極電性連結於電路基板之上。 複數個支撐結構，其中每一支撐結構係緊靠環繞於每 一發光單元之底座外表面，且每一支撐結構之頂端係低於 每一底座之上平面一特定距離。此外，又可使其頂端皆高 於底座兩侧電極之頂端。其形狀可依不同之設計水準有所 更動。 反射片則具有複數個開孔，透過此複數個開孔套蓋於 複數個發光單元之後，置放於複數個支撐結構頂端，藉由 M263512 複數個支撐結構架撐反射片，使反射片不與電極相接觸， 以免反射片壓毀電極。 當反射片利用支撐結構所提供之支撐，而不須再置放 於底座後，可使發鮮摘料之猶不再糾遮播，而 增進了發光模組的出光效率。 在本創作之-實施例中，其中每一支樓結構可為二弧 狀結構，二弧狀結構之内緣係緊靠環繞於底座之外表面， 且兩者設置之位置相互對立，末端财互相接觸，而於電 極處留有空隙。 在本創作之另一實施例中，其中每一支撐結構可為一 圓環狀結構，圓環狀結構之内緣緊靠環繞於底座之外表 面，設置於電極之上方，且其下緣高於電極之頂端。 此外，在本創作中為了預防反射片與電極兩者間相距 過近，而可能導致有靜電感應，甚或靜電放電之情況，較 佳之情況下，可使支撐結構之頂端至少高於該電極之頂端 〇· 2mm。並且若欲在改善反射片的設置位置後，更增加底座 表面之光線反射率，更可使底座之表面為白色表面，以增 加其表面反射率。 為使本創作之優點及精神能更進一步的被揭示，茲配 合圖式作一詳細說明如后。 【實施方式】 在以下說明中，為能求得本創作技術解說之一貫性， 故在不同實施例中，若有元件功能相同，但形狀略異者， 則仍以相同之名稱與圖號明之。 M263512 請參閱圖二A，為本創作之背光模組之一實施例之剖 面圖。該背光模組包括一電路基板1、複數個發光單元2、 複數個支撐結構4及一反射片3。 複數個發光單元2，係設於電路基板1上，其中每 一發光單元2皆具有一底座21及一發光二極體22，發光 二極體22係散入於該底座21内，且底座21之兩側具有電 極211a及電極211b，發光二極體22係透過電極211a、211b 電性連結於電路基板1之上。 並在複數個發光單元2中，於每一發光單元2之底座 21外表面，設置有支撐結構4。 反射片3則具有複數個開孔31，而其孔徑大小略大於 底座21外圍，使反射片3可透過此複數個開孔31套蓋於 複數個發光早元2之後，置放於每一發光單元2周圍之支 撐結構4頂端41，以支樓結構4架撐反射片3，使反射片 3套蓋於複數個發光單元2後，不與電極21 ia、21 lb相接 觸’以免反射片3壓毀電極211a、211b。 請參閱圖二B，其係為圖二A所示實施例之發光單元2 放大不意圖。每一支撐結構4為一圓環狀結構，圓環狀結 構之内緣緊靠環繞於底座21之外表面設置，設置於電極 211a、211b之上方，且支撐結構4之頂端低於底座汾上 平面一特定距離，以使反射片3置入後，不超過底座21 上平面南度，在本實施例中，係使反射片3置入後，與底 座21上平面齊平。 並使其下緣高度H1高於電極之頂端高度H2 。並為了 M263512 預防因反射片3在置放於支撐結構4頂端41後，與電極 211a、211b相距過近，而可能導致有靜電感應，甚或靜電 放電之情況，支撐結構4之頂端高度H3係高於該電極 211a、211b之頂端高度H2 0· 2mm，以增加反射片3與電極 間之距離’避免發生靜電感應。此外，更可使底座211之 表面為白色表面，以增加射向底座21之光線的反射率。 請參閱圖二C ’其係為圖二A所示實施例中發光單元2 之發光枕圍示意圖。當電路基板1導通時，每一發光單元 2内之發光二極體22藉由底座21兩侧之電極2lia、211b 通入之偏壓發出光線。因反射片3利用支撐結構4所提供 之支撐，而不須再置放於底座21後，改善了反射片3設置 位置，其位置可向下方移動，如圖所示，發光單元2所發 出之光線不再受到反射片3賴，而增進了背光模組的出 光效率。 ▲ 調的是，支撐結構更可做出其他形狀之 變更，而達到相近之功效。 請參閱圖三’其係為本創作另一實施例之發光單元放 圖二所示實施例不同處在於’其中環繞於發 ，早兀2底座之支縣構4，係為二弧狀結構知、处所组 此二錄結構4a、4b之崎翁靠環繞於 ==設置’頂端高度H3皆高於該底座21兩侧 兩者T向度取，且此二弧狀結構4a、4b ，叙錄轉49二核不與弧狀 2職留咖r _21_之電極仙、 M263512 在本實施例中，同樣可藉由支撐結構4提供反射片3 之支撐’以改善反射片3設置之位置，而達到增進發光模 組出光效率之目的。 、 綜觀以上實施例所述，本創作所揭露之背光模組，確 實可藉由支撐結構所提供之支撐，而改善反射片之置放位 吏其不致遮擋住背光單元所發出之光線，而達到增加 月光模組出光效率之目的，而解決習知技術之問題。 以上所述係利用二實施例以詳細說明本創作，其並非 用以限制本創作之實施範圍，並且熟習該項技藝者皆能明 瞭，適當作些微的修改仍不脫離於本創作之精神及範圍。 【圖式簡單說明】 圖一 A及圖一 β係為習知之直下式背光模組之組立圖 及剖面圖。 圖一C係為圖一Α所示中發光單元發光範圍示意圖。 圖二A係為本創作之一實施例之剖面圖。 圖二B係為圖二A所示實施例中發光單元之放大示意 圖〇 圖二C係為圖二A所示實施例中發光單元發光範圍示 意圖。 圖二係為本創作之另一實施例之發光單元之放大示意 圖〇 12 M263512 【主要元件符號說明】 1電路基板 2發光單元 3反射片 4支撐結構 4a弧狀結構 4b弧狀結構 21底座 22發光二極體 31開孔 41支撐結構頂端 211a電極 211b電極 IL圓環狀結構下緣高度 H2電極頂端南度 H3弧狀結構頂端高度 S空隙Emitted Diode; LED). The light-emitting diode is a light-emitting element made of a semiconductor material. The element has two electrode terminals, a voltage is applied between the terminals, and energy is excited and released in the form of light through the combination of electron holes. It has a small size, Due to its long life, low driving voltage, low power consumption, and excellent shock resistance, it has received increasing attention. Generally, the backlight module can be divided into two types: the edge type and the direct type according to the position of the light source. The edge type is to place the light source on the side face of the backlight module, which can reduce the thickness of the backlight module, so most of them are used in portable types. Liquid crystal display, M263512 directly places the light source under the backlight module, the brightness can get better uniformity, and because it has a large installation space, more light sources can be installed, which is suitable for the need for south brightness, wide Viewing angle display device. Please refer to FIG. 1A and FIG. 1. This is an assembly diagram and a cross-sectional view of a conventional direct type backlight module using a light emitting diode as a light source. The backlight module mainly includes a circuit substrate 1 and a plurality of light emitting devices. Unit 2 and a reflective sheet 3. A plurality of light emitting units 2 are arranged on the circuit substrate 1. Among the plurality of light emitting units 2, each light emitting unit 2 includes a base 21 and a light emitting diode 22. The base 21 is provided on the circuit substrate 丨, and electrodes 21 a and 21 lb are respectively provided on both sides of the base 21 to be electrically connected to the circuit substrate 1. The light-emitting diode 22 is disposed in the base 21 and is electrically connected to the electrodes 21 a and 21 lb. The reflection sheet 3 has a plurality of openings 31, and the number of the openings 31 is the same as that of the light-emitting unit 2. The reflection sheet 3 uses the openings 31 to be placed on the base 21 of the light-emitting unit 2, and only the main light-emitting part of the light-emitting diode 22 is used. It is exposed through the opening 31. Please refer to FIG. 1C, which is a schematic diagram of the light-emitting range of a light-emitting unit 2 in the embodiment shown in FIG. As shown in the figure, when the two electrodes 2Ha and 21 are turned on to make the light-emitting diode 22 emit light, most of the light emitted by the light-emitting diode 22 travels to the forward light-emitting surface (side A), and some of them go to both sides or even The light traveling backward (side B) reflects the light scattered by the light-emitting diode 22 to the side B through the reflection on the surface of the reflective sheet 3, and reflects back to the light emitting surface (side a), thereby increasing the light output efficiency of the backlight module. . It should be particularly noted that, because the reflection sheet 3 is placed above the base 21 of each light-emitting unit 2, the top end of the base 21 does not contact the electrodes 211a, 211b on both sides of the M263512 base 21, so that The electrodes 2Ua and 211b generate g and are damaged. However, because the reflection sheet 3 is placed above the base μ, the light emitted by the light-emitting diode 22 is blocked by the reflection sheet 3 and cannot be reflected back to the light-emitting surface on the a side, thereby reducing the efficiency of light emission. Alas, how to effectively improve the light output efficiency of the backlight module by improving the structure of the backlight module is the direction for those skilled in this art. [New content] One of the purposes of this creation is to provide a backlight module with a support structure that can improve the setting position of the reflection sheet to improve the light output efficiency of the backlight module by the support provided by the support structure. The backlight module disclosed in this creation includes a circuit substrate, a plurality of light emitting units, a plurality of supporting structures, and a reflective sheet. A plurality of light-emitting units are located on a circuit substrate. Each of the light-emitting units has a base and a light-emitting diode. The light-emitting diode system is embedded in the base, and each side of the base has an electrode. The light-emitting diode system The electrode is electrically connected to the circuit substrate. A plurality of supporting structures, wherein each supporting structure is closely abutted to the outer surface of the base surrounding each light-emitting unit, and the top of each supporting structure is lower than the plane above each base by a specific distance. In addition, the tops of the electrodes can be higher than the tops of the electrodes on both sides of the base. Its shape can be changed according to different design levels. The reflection sheet has a plurality of openings. After covering the plurality of light-emitting units through the plurality of openings, the reflection sheet is placed on top of the plurality of supporting structures, and the reflection sheet is supported by the plurality of supporting structures by M263512, so that the reflecting sheet is not connected with The electrodes are in contact to prevent the reflector from crushing the electrodes. When the reflection sheet utilizes the support provided by the support structure and does not need to be placed on the base, the freshness of the material can no longer be corrected, and the light emitting efficiency of the light emitting module is improved. In the embodiment of this creation, each of the building structures may be a two-arc structure, and the inner edge of the two-arc structure is close to the outer surface of the base, and the positions of the two are opposite to each other. They are in contact with each other, leaving gaps at the electrodes. In another embodiment of the present invention, each of the supporting structures may be a ring-shaped structure, and the inner edge of the ring-shaped structure abuts on the outer surface of the base, is arranged above the electrode, and its lower edge is higher than The top of the electrode. In addition, in order to prevent the reflection sheet and the electrode from being too close in this creation, static induction or even electrostatic discharge may be caused. In the best case, the top of the support structure may be at least higher than the top of the electrode. · 2mm. In addition, if the position of the reflecting sheet is improved, the light reflectance of the surface of the base can be increased, and the surface of the base can be made a white surface to increase its surface reflectance. In order to further reveal the advantages and spirit of this creation, I will give a detailed description with the drawings as follows. [Embodiment] In the following description, in order to obtain the consistency of the explanation of the creative technology, in different embodiments, if there are components with the same function but different shapes, the same name and drawing number will still be used . M263512 Please refer to FIG. 2A, which is a cross-sectional view of one embodiment of the backlight module of this creation. The backlight module includes a circuit substrate 1, a plurality of light emitting units 2, a plurality of support structures 4, and a reflection sheet 3. A plurality of light-emitting units 2 are disposed on the circuit substrate 1. Each of the light-emitting units 2 has a base 21 and a light-emitting diode 22. The light-emitting diodes 22 are scattered in the base 21, and the base 21 There are electrodes 211a and 211b on both sides, and the light emitting diode 22 is electrically connected to the circuit substrate 1 through the electrodes 211a and 211b. A support structure 4 is provided on the outer surface of the base 21 of each of the plurality of light-emitting units 2. The reflection sheet 3 has a plurality of openings 31, and the aperture size is slightly larger than the periphery of the base 21, so that the reflection sheet 3 can cover the plurality of light-emitting early cells 2 through the plurality of openings 31 and be placed on each light-emitting element. The top 41 of the support structure 4 around the unit 2 supports the reflection sheet 3 with a supporting structure 4 so that the reflection sheet 3 covers the plurality of light-emitting units 2 and does not contact the electrodes 21 ia and 21 lb 'to avoid the reflection sheet 3 The electrodes 211a, 211b are crushed. Please refer to FIG. 2B, which is an enlargement of the light-emitting unit 2 of the embodiment shown in FIG. 2A. Each support structure 4 is a ring-shaped structure, and the inner edge of the ring-shaped structure is arranged close to the outer surface of the base 21, and is arranged above the electrodes 211a, 211b, and the top of the support structure 4 is lower than the upper plane of the base. A specific distance is set so that the reflection sheet 3 is placed within the south of the upper plane of the base 21. In this embodiment, the reflection sheet 3 is placed flush with the upper plane of the base 21 after being placed. The height H1 of the lower edge is higher than the height H2 of the top of the electrode. And for M263512 to prevent the reflection sheet 3 from being placed too close to the electrodes 211a, 211b after being placed on the top 41 of the support structure 4, which may cause electrostatic induction or even electrostatic discharge, the top height H3 of the support structure 4 is higher than The top heights of the electrodes 211a and 211b are H2 0 · 2mm to increase the distance between the reflection sheet 3 and the electrodes' to avoid electrostatic induction. In addition, the surface of the base 211 can be made a white surface, so as to increase the reflectance of the light directed to the base 21. Please refer to FIG. 2C ′, which is a schematic diagram of the light-emitting pillow surround of the light-emitting unit 2 in the embodiment shown in FIG. 2A. When the circuit substrate 1 is turned on, the light-emitting diodes 22 in each light-emitting unit 2 emit light by the bias voltage passed through the electrodes 2lia and 211b on both sides of the base 21. Because the reflection sheet 3 uses the support provided by the support structure 4 and does not need to be placed on the base 21, the setting position of the reflection sheet 3 is improved, and its position can be moved downward. As shown in the figure, the light emitted by the light emitting unit 2 The light is no longer affected by the reflection sheet 3, and the light output efficiency of the backlight module is improved. ▲ It is tuned that the support structure can be changed in other shapes to achieve similar effects. Please refer to Fig. 3 'This is a light-emitting unit of another embodiment of the creation. The difference between the embodiment shown in Fig. 2 is that' Zixian structure 4 which surrounds the hair and has a base of early Wu 2 is a two-arc structure. The oscillating structure of the two recorded structures 4a, 4b is surrounded by == setting. The top height H3 is higher than both T directions of the two sides of the base 21, and the two arc-shaped structures 4a, 4b are described. Turn the 49 two cores and the arc-shaped two-poster coffee _21_ electrode fairy, M263512 In this embodiment, the support structure 4 can also be used to provide the support of the reflection sheet 3 to improve the position of the reflection sheet 3, and To achieve the purpose of improving the light emitting efficiency of the light emitting module. Based on the above-mentioned embodiment, the backlight module disclosed in this creation can indeed improve the placement of the reflection sheet through the support provided by the support structure, so that it will not block the light emitted by the backlight unit. The purpose of increasing the light output efficiency of the moonlight module is to solve the problems of the conventional technology. The above is the use of two embodiments to explain this creation in detail. It is not intended to limit the scope of implementation of this creation, and those skilled in the art can understand it. The appropriate slight modifications still do not depart from the spirit and scope of this creation. . [Brief description of the drawings] Figure 1A and Figure 1 are the assembly and sectional views of the conventional direct type backlight module. FIG. 1C is a schematic diagram of a light emitting range of the light emitting unit shown in FIG. 1A. FIG. 2A is a cross-sectional view of an embodiment of the present invention. FIG. 2B is an enlarged schematic view of the light-emitting unit in the embodiment shown in FIG. 2A. FIG. 2C is a schematic view of the light-emitting unit's light-emitting range in the embodiment shown in FIG. 2A. Figure 2 is an enlarged schematic view of the light-emitting unit of another embodiment of this creation. 012 M263512 [Description of the main component symbols] 1 Circuit board 2 Light-emitting unit 3 Reflective sheet 4 Support structure 4a Arc structure 4b Arc structure 21 Base 22 emits light Diode 31 Opening hole 41 Support structure top 211a electrode 211b electrode IL ring-shaped structure lower edge height H2 electrode top south H3 arc-shaped structure top height S gap
1313