201011405 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種顯示裝置、背光模組及發光單元， 特別關於一種液晶顯示裝置、背光模組及發光單元。 【先前技術】 在液晶顯示裝置之背光模組中，發光源不論是線光源 t (例如：冷陰極螢光燈管，CCFL)或點光源（例如：發光 〇 二極體，LED)，皆需經過擴散或導光後，以成為面光源。 而點光源在擴散或導光過程中，亮度均勻化、色彩之混光 及發光元件數量之設置與使用，將決定背光模組及液晶顯 示裝置之品質與生產成本。 請參照圖1所示，一種習知之背光模組10包含一擴 散板11及複數個發光元件12,背光模組10係為一直下式 背光模組。擴散板Π係設置於發光元件12上，習知之發 光元件12係為一發光二極體（LED)，其多數的高強度光 ® 線集中於一定角度的發射角範圍内，而成為一點光源。擴 散板Π係為一母板摻雜多顆擴散粒子的複合結構，並具 有一入光面11a及一出光面lib。發光元件12設置於入光 面11a下方。當發光元件12發出光線自入光面11a入射 後，經擴散板11加以散亂地擴散而自出光面lib射出後， 便形成一較原來點光源為均勻的面光源。 然而，發光元件12直接經由擴散板11出射出光面 1 lb，依然容易從液晶顯示裝置看到點狀亮紋（Hot Spot) ’ 201011405 加上光線在侧向一定角度外的發射光線強度陡降，雖各發 光元件12間經正上方的擴散板11擴散，其光線混光及均 勻的效果仍然有限。又，習知技術為避免各發光元件12 間交界的相對暗區過於明顯，因而發光元件12之間距需 保持一定的接近程度而無法拉大。爰因於此，不僅習知之 發光元件12之使用數量無法減少，且含有點狀亮紋之面 光源亦造成液晶顯不裝置顯不品質不佳。 因此，如何提供一種液晶顯示裝置、背光模組及發光 ❹ 單元使發光源之亮紋現象獲得改善、亦能增加混光效率， 更可減低發光元件之使用數量，進而增加液晶顯示裝置之 顯示品質及降低生產成本，已成為重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供液晶顯示裝 置、背光模組及發光單元，藉由導光元件之設置使發光光 源增加混光效率、提高光線均齊度、避免亮紋產生及減少 ® 發光元件之使用量，進而增加液晶顯示裝置顯示品質及降 低生產成本。 為達上述目的，依據本發明之一種發光單元包含一導 光元件以及至少一發光元件。導光元件係具有一入光面、 一出光面及一容置空間。發光元件係容置於容置空間，並 與入光面鄰設。 為達上述目的，依據本發明之一種背光模組包含一電 路板以及複數個發光單元。發光單元係設置於電路板上並 201011405 ^電路板電性連接。各發光單 發光元件。導光元件具有—入光面：一=牛及至少-間。笋氺面 出先面及一容置空 二疋件容置於容置空間並輿入光面鄰設。 、、、達上述目的，依據本發明 括、点曰 -液晶領干“….Μ月之一種液晶顯示裝置包含 面板對以組。背光模組係與液晶顯示 單元設置於、::並盘及複數個發光單元。發光 含-導、板電性連接。各發光單元包 面、：出=及至少一發光元件。導光元件具有-入光 與入光面鄰凝。 知先兀件-置於容置空間並 根，因依據本發明之〜種液晶顯稀置、背光 射元係藉由在導光元件設置導角、半穿透半: 髻 側向均i擴::構、錐面結構使光源光線增加正向及 光光源^之政果、、習知技術相較，本發明能夠使發 減少光效率:提高光線均齊度、避免亮紋產生及 及降低生產^使用里’進而增加液晶顯示裝置顯示品質 【實施方式】 種、夜2將參照相_式，說明依本發明較佳實施 將:：二不裝置、背光模組及發光單元，其中相同 ?以相同的參照符號加以說明。 第一實施例 之 請參照圖2Α及圖2Β所示’本發明第一實施例 201011405 背光模組20包含一電路叔 示僅以-個為代表示意）。^複數個發光單元21 (圖 光模組或-側光式背光模版。於本I2:::為:直下式背 係以-直下式背光模組為例說明二單組2〇 包含一V:及 係例如但不限為-發光 ^先兀件212。發光元件212 ❹ Ο 體（OLED)之發光元件、胃（LED)或一有機發光二極 並具有一入二件 發光元件212容置於容置空間211叫及—谷置空間211c° 設。入光面211a的形狀传 C，亚與入光面211a鄰 合，亦或入光面川t 光元件212的形狀相互配 狀相互配合。入光面&211=係與發光元件212封裝體的形 —向上凹面。於 c面。另外，發光元件212與入光面2iia之間:： 折射皁學膠G，且其折射率係介於發光元件212的 折射率與導光元件2n的折 什⑴的 二極2意的是，本發明之發光元件扣可由-内含發弁 =極體日日片的封裝體直接容置於容置空 枉體裸晶片容置於容置空間We，亦或可藉由發光= 201011405 體裸晶片直接以導光元件211為封裝體等形式，並以覆晶 接合（flip-chip bonding)或打線接合（wire bonding)的 方式與電路板22電性連結.。 田發光單元21之光線l傳導至出光面2iib時，由於 導角214之設置，係利用折射定律經由適當的角度設計， 可將發光元件212集中向上方射出之光線L，以導角214 加以全反射的方式反射至網點213，經由網點213將其往 側向繼續全反射傳導的能力破壞，而將光線L·從出光面 © 2 llb導出，以避免高強度的光線直接自發光元件212正上 方出射而產生點狀亮紋。 第二實施例 請參照圖3所示，本發明第二實施例之一種背光模組 30，並包含一電路板32以及複數個發光單元31 ,其基本 構造大部分係與第一實施例之背光模組2〇相同，故於此 不再贅述。背光模組30與背光模組2〇不同之特點在於： 發光單元31可僅在發光元件312正上方之一局部區域設 ® 置半穿透半反射膜315而不需設置導角，半穿透半反射膜 315的材料係可為一同時具有光穿透及反射性的多層膜。 如圖3所示，當各發光單元31之光線L傳導至出光 面311b時，藉由設置半穿透半反射膜315，使發光元件 312向正上方及正上方附近直接射出光線L，其中，發光 元件312發出的絕大部分光線L有部分直接穿透出光面 311b ’其他部分則向導光元件3u四周反射，再經由網點 313將光線L往側向繼續全反射傳導能力破壞，而將光線 201011405 L伙出光面31ib導出，如此同樣可避免過多高強度的光線 直接自發光元件312於正上方及附近射出而產生亮紋，且201011405 IX. Description of the Invention: [Technical Field] The present invention relates to a display device, a backlight module, and a light-emitting unit, and more particularly to a liquid crystal display device, a backlight module, and a light-emitting unit. [Prior Art] In the backlight module of the liquid crystal display device, the light source is required to be either a line source t (for example, a cold cathode fluorescent tube, a CCFL) or a point source (for example, a light emitting diode, an LED). After diffusion or light guide, it becomes a surface light source. In the process of diffusion or light guiding, the uniformity of brightness, the mixing of colors and the setting and use of the number of light-emitting components will determine the quality and production cost of the backlight module and the liquid crystal display device. As shown in FIG. 1 , a conventional backlight module 10 includes a diffusion plate 11 and a plurality of light-emitting elements 12, and the backlight module 10 is a continuous-type backlight module. The diffuser plate is disposed on the light-emitting element 12. The conventional light-emitting element 12 is a light-emitting diode (LED), and most of the high-intensity light wires are concentrated in a range of angles of emission and become a point source. The diffusion plate is a composite structure in which a mother plate is doped with a plurality of diffusion particles, and has a light-incident surface 11a and a light-emitting surface lib. The light-emitting element 12 is disposed below the light-incident surface 11a. When the light-emitting element 12 emits light from the light-incident surface 11a, it is scattered by the diffusion plate 11 and is emitted from the light-emitting surface lib, thereby forming a surface light source which is uniform from the original point light source. However, the light-emitting element 12 directly exits the light surface 1 lb via the diffusion plate 11, and it is still easy to see a dot spot from the liquid crystal display device (2010), and the intensity of the emitted light of the light outside the lateral angle is steep. Although the light-emitting elements 12 are diffused through the diffusion plate 11 directly above, the effect of light mixing and uniformity is still limited. Further, the conventional technique is to prevent the relatively dark areas of the boundary between the light-emitting elements 12 from being too conspicuous, so that the distance between the light-emitting elements 12 needs to be kept close to a certain extent and cannot be enlarged. For this reason, not only the number of conventional light-emitting elements 12 cannot be reduced, but also the surface light source containing the dot-like bright lines causes the liquid crystal display device to be unsatisfactory. Therefore, how to provide a liquid crystal display device, a backlight module, and a light-emitting unit can improve the brightness of the light source, increase the light mixing efficiency, and reduce the number of light-emitting elements, thereby increasing the display quality of the liquid crystal display device. And reducing production costs has become one of the important topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a liquid crystal display device, a backlight module, and a light-emitting unit, which can increase the light mixing efficiency, improve the uniformity of light, and avoid bright lines by the arrangement of the light guiding elements. Produces and reduces the amount of light-emitting components used, which in turn increases the display quality of liquid crystal display devices and reduces production costs. To achieve the above object, an illumination unit according to the present invention comprises a light guiding element and at least one light emitting element. The light guiding component has a light incident surface, a light exiting surface and an accommodating space. The light-emitting element is placed in the accommodating space and adjacent to the light-incident surface. To achieve the above object, a backlight module according to the present invention comprises a circuit board and a plurality of light emitting units. The light emitting unit is disposed on the circuit board and the circuit board is electrically connected. Each of the light emitting elements. The light guiding element has a light-incident surface: a = cow and at least - between. The bamboo shoots face and the first space and the second space are placed in the accommodating space and merge into the glossy side. According to the present invention, a liquid crystal display device of the present invention comprises a panel pair, a backlight module and a liquid crystal display unit are disposed on the ::: a plurality of light-emitting units, the light-emitting includes a guide, and the plate is electrically connected. Each of the light-emitting units has a surface, a light output, and at least one light-emitting element. The light-guiding element has a light entering and a light-emitting surface adjacent to the light-incident surface. The accommodating space is rooted, because the liquid crystal is thinned according to the present invention, and the backlight element is provided with a lead angle and a semi-transparent half in the light guiding element: 髻 laterally i-expanded::, tapered surface The structure makes the light source light increase in the forward direction and the light source, and the conventional technology can reduce the light efficiency: improve the uniformity of light, avoid the occurrence of bright lines, and reduce the production. Increasing the display quality of the liquid crystal display device [Embodiment] The type 2 and the night 2 will refer to the phase _, and the preferred embodiment of the present invention will be described as follows: a second device, a backlight module and a light-emitting unit, wherein the same reference numerals are used. For the first embodiment, please refer to FIG. 2Α As shown in FIG. 2A, the first embodiment of the present invention, the 201011405 backlight module 20 includes a circuit diagram, which is represented by only one of the plurality of light-emitting units 21 (a light module or a side-light backlight template). In the present I2:::: the direct-type back system uses a direct-lit backlight module as an example to illustrate that the two-unit group 2 includes a V: and is, for example, but not limited to, a light-emitting device 212. The light-emitting element 212 ❹ The light-emitting element of the OLED (LED), the stomach (LED) or an organic light-emitting diode and having a two-in-one light-emitting element 212 are accommodated in the accommodating space 211 and the arranging space 211c. The shape is transmitted, the sub-surface is adjacent to the light-incident surface 211a, or the shape of the light-emitting surface t-light element 212 is matched with each other. The light-incident surface & 211 = the shape of the package of the light-emitting element 212 and the upward concave surface In addition, between the light-emitting element 212 and the light-incident surface 2iia:: refracting the saponin G, and the refractive index thereof is between the refractive index of the light-emitting element 212 and the dipole of the light-conducting element 2n (1) 2 means that the light-emitting element buckle of the present invention can be directly accommodated in the storage space by the package containing the hairpin=polar body day piece The bare die is placed in the accommodating space We, or may be directly formed by the light-emitting element 211 as a package by illuminating = 201011405, and flip-chip bonding or wire bonding (wire) The bonding method is electrically connected to the circuit board 22. When the light ray 1 of the field light-emitting unit 21 is transmitted to the light-emitting surface 2iib, the light-emitting element 212 can be concentrated by the appropriate angle design by the refractive law by the setting of the lead angle 214. The light beam L emitted upward is reflected to the halftone point 213 by the total reflection angle 214, and the ability to continue the total reflection conduction to the side through the mesh point 213 is destroyed, and the light L· is emitted from the light exit surface © 2 llb. It is avoided that high-intensity light directly exits directly above the light-emitting element 212 to produce a dot-like bright line. Referring to FIG. 3, a backlight module 30 according to a second embodiment of the present invention includes a circuit board 32 and a plurality of light emitting units 31, the basic structure of which is mostly the backlight of the first embodiment. Module 2 is the same, so it will not be described here. The backlight module 30 is different from the backlight module 2〇 in that: the light-emitting unit 31 can only provide a semi-transparent semi-reflective film 315 in a partial area directly above the light-emitting element 312 without setting a lead angle, semi-transparent. The material of the semi-reflective film 315 can be a multilayer film having both light penetration and reflectivity. As shown in FIG. 3, when the light L of each of the light-emitting units 31 is transmitted to the light-emitting surface 311b, by providing the transflective film 315, the light-emitting element 312 is directly emitted toward the light-emitting element 312 directly above and directly above, wherein Most of the light L emitted by the light-emitting element 312 partially penetrates the light-emitting surface 311b. The other portions of the light-emitting element 311 are reflected by the light-guiding element 3u, and then the light-emitting L is further detached by the mesh point 313 to the side to continue the total reflection conduction, and the light is 201011405. L-beam light surface 31ib is derived, so as to avoid excessive high-intensity light directly from the light-emitting element 312 directly above and near the light-emitting element to produce bright lines, and
亦不致使發光元件312正上方缺乏直接穿透射出之光線L 而造成正上方局部暗區。如此一來，可使背光模组之 照明效果更為均勻。 第二貫施例 ❹Nor does the light-emitting element 312 directly lack the light L that is directly transmitted through it, resulting in a partial dark area directly above. In this way, the illumination effect of the backlight module can be more uniform. Second instance ❹
請芩照圖4所示，本發明第三實施例之一種背光模組 =，其基本結構已於上述第一實施例之背光模組2〇詳予 °兒明1故不再贅述。發光單元41除與上述第—實施例之 發光單元21相同外’發光單元41尚具有複數個導角414 4於4光元件412之上及導光元件411的側邊。光線L藉 ^導f元件411<則邊的導角414破壞光線二繼續全反射傳 ，的此力’而使其自導角414表面射出，不僅增強各發光 早兀41之間的色彩混光效果，也因此可增大各發光單元 41間之間隙，減少發光元件412之數量。 第四實施例 請參照圖5A及圖5B所示，本發明第四實施例之一種 月址組50,該等發光單元51a、51b 述第三實施例之發光單元41相同。 成係”上 如圖5A所π，發光單元51a與發光單元不同 點在於··入光面5lla係為—圓弧面，藉此，不僅發光元件 5二更容易出光’可減少發光元件512之光線 二射至導光元件511時之損耗，且導光元件5ΐι之入^面) 5Ua更易於成型。 先面 201011405 如圖5B所示，在入光面511a'上，更可增設一散射性 結構516，例如多個擴散粒子，使光線L散射角度更大， 光線L的出射也就更加均勻。 第五實施例 請參照圖6所示，本發明第五實施例之一種背光模組 60，包含一電路板62以及發光單元61。其中，發光單元 61之導光元件611與上述各實施例不同之特點在於：入光 面611 a係具有一半穿透半反射性質之錐形面，其頂點正對 ❹ 發光元件612，如此設計以取代上述各實施例之導角設 計，仍然可避免亮紋產生。 請參照圖7所示，本發明較佳實施例之一種液晶顯示 裝置7包含一液晶顯示面板70以及一背光模組80。背光 模組80係與液晶顯示面板70對應設置。背光模組80之 構成，除可應用上述各實施例之發光單元及電路板所組成 之LED光源模組81之外（在圖7所示多個圓餅狀元件即 為多個發光單元），背光模組80更包含一光學膜片組82， 鄰設於該等發光單元之該等出光面。光學膜片組82例如 為一上擴散片821、一增亮膜片822及一下擴散片823所 組成，以提供液晶顯示裝置7均勻無亮紋之光源。 綜上所述，因依據本發明之一種液晶顯示裝置、背光 模組及發光單元係藉由在導光元件設置導角、半穿透半反 射膜、散射結構、圓弧或錐面結構使光源光線增加正向及 侧向均勻擴散之效果。與習知技術相較，本發明能夠使發 光光源增加混光效率、提高光線均齊度、避免亮紋產生及 11 201011405 減少發光元件之使用量，進而增加液晶顯示裝置顯示品質 及降低生產成本。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為一種習知之LED光源之背光模組的示意圖； ❹ 圖2A及圖2B為依據本發明第一實施例之一種背光模 組的不意圖， 圖3為依據本發明第二實施例之一種背光模組的示意 圖； 圖4為依據本發明第三實施例之一種背光模組的示意 圖； 圖5A及圖5B為依據本發明第四實施例之一種背光模 組的不意圖， ® 圖6為依據本發明第五實施例之一種背光模組的示意 圖；以及 圖7為搭配本發明較佳實施例之一種液晶顯示裝置的 示意圖。 【主要元件符號說明】 10、20、30、40、50、60、80 :背光模組 11 ·擴散板 12 201011405 lla、211a、311a、411a、511a、511a'、611a:入光面 lib、211b、311b、411b、511b、611b :出光自 12、212、312、412、512、612 :發光元件 21、31、41、51a、51b、61 :發光單元 211、311、411、511、611 :導光元件 211c、311c、411c、511c、611c:容置空間 213、 313、413、513、613 :網點 214、 414、514 :導角 © 22、32、42、52、62 :電路板 315、615 :半穿透半反射膜 516:散射性結構 7:液晶顯示裝置 7 0 :液晶顯示面板 81 : LED光源模組 82 :光學膜片組 821 :上擴散片 ® 822 :增亮膜 823 :下擴散片 L :光線 G :光學膠 13As shown in FIG. 4, a backlight module of the third embodiment of the present invention has a basic structure which has been described in detail in the backlight module 2 of the first embodiment. The light-emitting unit 41 is identical to the light-emitting unit 21 of the above-described first embodiment. The light-emitting unit 41 has a plurality of lead angles 414 4 on the four-light element 412 and on the side of the light-guiding element 411. The light L is guided by the f element 411<the leading angle 414 of the edge destroys the light, and the force of the full reflection is transmitted, and the surface of the self-guide angle 414 is emitted, which not only enhances the color mixing between the respective light-emitting elements 41. As a result, the gap between the respective light-emitting units 41 can be increased, and the number of the light-emitting elements 412 can be reduced. Fourth Embodiment Referring to Fig. 5A and Fig. 5B, a month address group 50 according to a fourth embodiment of the present invention, the light emitting units 41a, 51b of the third embodiment are the same as the light emitting unit 41 of the third embodiment. As shown in FIG. 5A, the light-emitting unit 51a differs from the light-emitting unit in that the light-incident surface 51a is a circular arc surface, whereby not only the light-emitting element 5 is more likely to emit light, but the light-emitting element 512 can be reduced. 5Ua is easier to mold when the light is incident on the light guiding element 511, and the light guiding element 5 is easy to form. First surface 201011405 As shown in FIG. 5B, a scattering property can be added to the light incident surface 511a'. The structure 516, for example, a plurality of diffusing particles, the light ray L is scattered at a larger angle, and the light ray L is more uniformly emitted. In the fifth embodiment, a backlight module 60 according to a fifth embodiment of the present invention is shown in FIG. The circuit board 62 and the light-emitting unit 61 are included. The light-guiding element 611 of the light-emitting unit 61 is different from the above embodiments in that the light-incident surface 611a has a tapered surface with a half-transflective property and a vertex thereof. The liquid crystal display device 7 of the preferred embodiment of the present invention includes a liquid crystal display. Panel 70 And a backlight module 80. The backlight module 80 is disposed corresponding to the liquid crystal display panel 70. The backlight module 80 is configured by using the LED light source module 81 composed of the light-emitting unit and the circuit board of the above embodiments. (The plurality of wafer-shaped elements shown in FIG. 7 are a plurality of light-emitting units), and the backlight module 80 further includes an optical film group 82 adjacent to the light-emitting surfaces of the light-emitting units. 82 is composed, for example, of an upper diffusion sheet 821, a brightness enhancement film 822, and a lower diffusion sheet 823, to provide a light source with uniform brightness and no brightness of the liquid crystal display device 7. In summary, a liquid crystal display device according to the present invention The backlight module and the light-emitting unit have the effects of increasing the forward and lateral uniform diffusion of the light source by providing a guide angle, a transflective film, a scattering structure, an arc or a cone structure in the light guiding element. Compared with the known technology, the present invention can increase the light mixing efficiency, improve the uniformity of light, avoid the occurrence of bright lines, and reduce the usage of the light-emitting elements, thereby increasing the display quality of the liquid crystal display device and reducing the production. The above description is intended to be illustrative, and not restrictive, and any equivalents and modifications may be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a backlight module of a conventional LED light source; FIG. 2A and FIG. 2B are schematic diagrams of a backlight module according to a first embodiment of the present invention, and FIG. 3 is a schematic diagram of a backlight module according to a first embodiment of the present invention. 2 is a schematic diagram of a backlight module according to a third embodiment of the present invention; FIG. 5A and FIG. 5B are schematic diagrams of a backlight module according to a fourth embodiment of the present invention; Figure 6 is a schematic view of a backlight module in accordance with a fifth embodiment of the present invention; and Figure 7 is a schematic view of a liquid crystal display device in accordance with a preferred embodiment of the present invention. [Description of main component symbols] 10, 20, 30, 40, 50, 60, 80: backlight module 11 · diffusing plate 12 201011405 lla, 211a, 311a, 411a, 511a, 511a', 611a: light-incident surface lib, 211b , 311b, 411b, 511b, 611b: light emission from 12, 212, 312, 412, 512, 612: light-emitting elements 21, 31, 41, 51a, 51b, 61: light-emitting units 211, 311, 411, 511, 611: Optical elements 211c, 311c, 411c, 511c, 611c: accommodating spaces 213, 313, 413, 513, 613: mesh points 214, 414, 514: lead angles © 22, 32, 42, 52, 62: circuit boards 315, 615 : Transflective film 516: Scattering structure 7: Liquid crystal display device 70: Liquid crystal display panel 81: LED light source module 82: Optical film group 821: Upper diffuser® 822: Brightening film 823: Down diffusion Sheet L: Light G: Optical glue 13