200944900 九、發明說明： 【發明所屬之技術領域】 本發明係關於-種背光模組，_是 端面具有散光區塊的背光模組。 種蛉先板的側 【先前技術】 i :般非自發紐的顯示面板，例如：液晶面板 要-为光源才得以進行影像的顯示。在 t吊需 術中’側端入光的背光模組係較符合產 逐漸廣泛地應用在筆記型電腦螢幕及液晶顯示器上。/ 請參照圖-及圖二，其係分別為習知背光模 二習知^光模組中導光板及發光：極體燈條的示意 莫組10包括一導光板11' 一發光二極體燈條12、 二反射二13及複數層光學_4。導光板丨丨具有—側端面 及-出先面112。發光二極體燈條12係設置於導光板” 之側端面111 ’複數層光學_ 14設置 蝴於= 祕Γ光二極魏條12上設置有複數個發光二極體⑵，這 ίίίΓ極體121係對應於導光板11之侧端面⑴排列， f出光線’且光線通過導光板u之側端面出而入射至導 丨1内，故導光板U之側端面ηι即為導光板η之入光 。表光一極雜條12所發出的光線在導光板η内部 tit反射而散布其中，並藉由導缺η底面的微結構 (射未顯示)破壞全反射，_光線_絲η的出光面 200944900 112射出。接著，光線經過複數層光學膜片μ後，進入一液 晶面板（圖中未顯示），藉以使背光模組丨〇提供一均勻的面光 源給液晶面板。 另外，複數層光學膜片14可包含增光片及擴散片，以強 化背光模組10所提供的光線品質。而設置於導光板11下方 的反射片13可將向下射出導光板11的光線反射回導光板u 中，以提高光線的使用率。 Ο ❹ 然而，由於發光二極體燈條12上的每一發光二極體121 係為點光源其所發出之光線過於集中，且這些發光二極體 121等間隔排列，所以在導光板u的會形成週期性的亮暗紋 (hotspot)。上述的亮暗紋將會影響到背光模組1〇所提供之 面光源的均勻性及亮度品質。 請參照圖三，其係為一習知導光板的結構示意圖。為了 解決上述亮暗紋的問題，此導光板21的入光面211製作了許 多端面突出結構’職储人射光線，使光魏更均句地散 射至導光板21内。但是，上述的技術手段會造成整體輝度下 降，且此種端面加工的重建性不佳。 爰是’鐘於上述習知技術中仍有不足之處，故提供一實 際有效的解決方案，係為當前技術所必需。 、 【發明内容】 輝度 本發明之一目的係在於有效解決亮暗紋的問争 f組能提供亮度更佳、更均勻的面絲，並轉—^的整體 200944900 種重建性佳且可以有效 本發明之另一目的係在於提供一 解決亮暗紋的技術手段。 =發_其他目的和優断峨本發騎揭露的技 徵中得到進一步的了解。 、 為達上述之-或部份或全部目的或是其他目的， 之實施例巾_端人触背光模組包括—導紐、 極體燈條及複數個散光區塊。 * 一 、導光板具有—第—表面、相對於第-表面的-第二表面 、乂及連接帛表面與第二表面的—側端面，此侧端面係為導 光板之-人絲面。發光二極體燈條鄰近且面對侧端面。發 光一極體燈條具有複數個發光二極體及一燈罩，其中每一發 光二極體用以發出一光線至側端面。 -上述複數個散光區塊中，每一散光區塊的位置係對應於 不同的發光二極體。每一散光區塊具有複數個遮光圖形，其 ❹ 具有遮光及部份反射光線的效果，且每相鄰的兩遮光圖形間 具有一間隙。 這些遮光圖形適於將照射其上的光線的一部分反射。其 中這些遮光圖形設置於側端面上’且這些遮光圖形中的至少 一部分位於對應的發光二極體發出的光線照射於侧端面上的 區域中，以及其中被侧端面及這些遮光圖形反射的部分的發 光二極體發出之光線將被燈罩反射至側端面。 因此’藉由上述技術特徵，進入導光板之側端面之入射 光線便不致過於集中於發光二極體正前方之區域，而是更加 200944900 « > . 均勻地入射且分布於導光板内。 . +關於本發明之優點與精神，以及更詳細的實施方式可以 藉由以下的κ細*方式以及所附圖式得到進一步的瞭解。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在以 下配合參考圖式之—較佳實補的詳細削中，將可清楚的 呈現。以下實施例中所提到的方向用語，例如：上、下、左、 ❹ 右、前或後等，僅是參考附加圖式的方向。因此，使用的方 向用語是用來說明並非用來限制本發明。 北，請參照圖四Α及圖四Β’其係皆為本發日月之一實施例的 月光模組中導光板及發光二極體燈條的示意圖，其中圖四B 係為導光板及發光二極體燈條的上視圖。請同時參照兩圖， 本發明之一實施例之側端入光的背光模組包括一導光板 31、一發光二極體燈條40及複數個散光區塊35。 縣板31具有—第—表面、相對於第-表面的-第二表 面以及連接第-表面及第二表面的-侧端面311，此侧端面 311係為導光板31之一入光表面。發光二極體燈條4〇鄰近 且面對上述側端面311，用以發出光線至側端面311，以進入 導光板31内，故此侧端面311係為導光板31之入光面311。 發光二極體燈條40係具有複數個發光二極體41、一可反射 光線之燈罩42及一電路板43。其中，每一發光二極體 係為發光二極體燈條40的發光源’用以發出一光線至側端面 311。發光一極體41與燈罩42係位於發光二極體燈條4〇的 200944900 係對應於導光板31的 同一表面上’且複數個發光二極體41 側端面311排列設置。 請參照_ c，其係為發光二極體41及導 圖，在本實施例中，每-發光二極體41包括—透光封裝^ 412’其面積與發光二極體41所具有之出光截面4 實質上相等。 檟200944900 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, which is a backlight module having an astigmatism block on its end face. Side of the first board [Prior Art] i: A display panel that is not a spontaneous button, for example, a liquid crystal panel. In the case of t-hanging, the backlight module of the side-end light is more suitable for production and is widely used in notebook computer screens and liquid crystal displays. / Please refer to the figure - and Figure 2, which are respectively known as the backlight module 2, the light guide plate and the illuminating light module: the schematic group 10 of the polar body light bar includes a light guide plate 11', a light emitting diode Light bar 12, two reflections two 13 and a plurality of layers of optical _4. The light guide plate has a side end surface and a front surface 112. The light-emitting diode light strip 12 is disposed on the side end surface 111 of the light guide plate. 'Multiple layers of optical _ 14 set butterfly = Γ Γ light dipole Wei strip 12 is provided with a plurality of light-emitting diodes (2), this ίίί polar body 121 Corresponding to the side end surface (1) of the light guide plate 11, the light rays are emitted, and the light is incident on the side surface of the light guide plate u and enters the guide hole 1. Therefore, the side end surface η of the light guide plate U is the light entering the light guide plate η. The light emitted by the surface light stray strip 12 is reflected and scattered in the inside of the light guide plate η, and the total reflection is destroyed by the microstructure of the bottom surface of the lead η (not shown), and the light-emitting surface of the _ ray_filament η 200944900 112. Then, the light passes through the plurality of optical films μ, and then enters a liquid crystal panel (not shown), so that the backlight module provides a uniform surface light source to the liquid crystal panel. In addition, the plurality of optical films 14 may include a brightness enhancement sheet and a diffusion sheet to enhance the light quality provided by the backlight module 10. The reflection sheet 13 disposed under the light guide plate 11 can reflect the light that is emitted downward from the light guide plate 11 back into the light guide plate u, Increase the use of light. ❹ However, since each of the light-emitting diodes 121 on the light-emitting diode strip 12 is a point light source, the light emitted by the light source is too concentrated, and the light-emitting diodes 121 are equally spaced, so that the light guide plate u is Forming periodic hotspots. The above-mentioned bright and dark lines will affect the uniformity and brightness quality of the surface light source provided by the backlight module 1. Referring to Figure 3, it is a conventional light guide plate. In order to solve the problem of the above-mentioned bright and dark lines, the light-incident surface 211 of the light guide plate 21 is formed with a plurality of end-projecting structures to store light rays, so that the light is evenly scattered into the light guide plate 21. However, the above The technical means will cause the overall brightness to decrease, and the reconstruction of such end face processing is not good. 爰 is that the clock still has some shortcomings in the above-mentioned conventional technology, so it provides a practical and effective solution, which is the current technical institute. [Invention] Contents of the invention One of the objectives of the present invention is to effectively solve the problem of bright and dark lines. The group f can provide a brighter and more uniform surface silk, and the overall 200944900 reconstruction is better. And another object of the present invention is to provide a technical means for solving the problem of bright and dark lines. The other purpose and the advantages and disadvantages of the present invention are further understood. For some or all of the purposes or for other purposes, the embodiment of the invention includes a guide button, a pole light strip and a plurality of astigmatism blocks. 1. The light guide plate has a - surface, relative to a second surface of the first surface, a side surface of the crucible and the connecting crucible and a side surface of the second surface, the side end surface being a human silk surface of the light guide plate. The light emitting diode light strip is adjacent to and facing the side end surface. The first light strip has a plurality of light emitting diodes and a light cover, wherein each of the light emitting diodes emits a light to the side end surface. - In the plurality of astigmatism blocks, the position of each astigmatism block corresponds to a different light-emitting diode. Each astigmatism block has a plurality of opaque patterns, and the ❹ has the effect of blocking light and partially reflecting light, and has a gap between each adjacent two opaque patterns. These shading patterns are adapted to reflect a portion of the light illuminating thereon. Wherein the light shielding patterns are disposed on the side end surface ′ and at least a portion of the light shielding patterns are located in a region where the light emitted by the corresponding light emitting diode is irradiated on the side end surface, and a portion of the light shielding pattern reflected by the side end surface and the light shielding patterns The light from the LED will be reflected by the lamp cover to the side end face. Therefore, by the above technical feature, the incident light entering the side end surface of the light guide plate is not concentrated too much in the area directly in front of the light-emitting diode, but is more uniformly incident and distributed in the light guide plate. + The advantages and spirit of the present invention, as well as the more detailed embodiments, can be further understood by the following k-methods and the drawings. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, are only directions referring to the additional drawings. Therefore, the terminology used is used to describe that it is not intended to limit the invention. North, please refer to Figure 4 and Figure 4, respectively. The schematic diagrams of the light guide plate and the light-emitting diode light bar in the moonlight module of one embodiment of the present day are shown in Figure 4, wherein Figure 4B is the light guide plate and Upper view of a light-emitting diode strip. Referring to the two figures, the backlight module of the side-end light-emitting device of the embodiment of the present invention comprises a light guide plate 31, a light-emitting diode light strip 40 and a plurality of astigmatism blocks 35. The county plate 31 has a first surface, a second surface opposite to the first surface, and a side surface 311 connecting the first surface and the second surface, the side end surface 311 being a light incident surface of the light guide plate 31. The light-emitting diode strip 4 is adjacent to and faces the side end surface 311 for emitting light to the side end surface 311 to enter the light guide plate 31. Therefore, the side end surface 311 is the light incident surface 311 of the light guide plate 31. The light-emitting diode light strip 40 has a plurality of light-emitting diodes 41, a light-shield 42 that reflects light, and a circuit board 43. Each of the light emitting diodes is a light source of the light emitting diode strip 40 for emitting a light to the side end surface 311. The light-emitting diode 41 and the globe 42 are located on the same surface of the light-emitting diode strips, and the plurality of light-emitting diodes 41 are provided on the same surface. Please refer to _ c, which is a light-emitting diode 41 and a conductive pattern. In the present embodiment, each of the light-emitting diodes 41 includes a light-transmitting package 412 ′ and an area of the light-emitting diode 41 . Section 4 is substantially equal.槚
具體而言，在本實施例中，每一散光區塊35的位置係對 應於不同的發光二極體4卜每-散光區塊35具有複數個遮 光圖形352 ’每相鄰的兩遮光圖形352間具有一間隙。^ 些遮光圖形352適於將照射其上的光線的一部分反射，其中 此些遮光圖形352設置於側端面311上，且此些遮光圖形352 中的至少一部分位於對應的發光二極體41發出的光線照射 於侧端面311上的區域中，以及其中被側端面311及此些遮 光圖形352所反射的部分的此些發光二極體41發出之此些光 線將被燈罩42反射至側端面311。 在一較佳實施例中，散光區塊35設置於導光板31之側 端面311上，且每一散光區塊35係位於每一發光二極體41 之正前方。請參照圖四D，其係為發光二極體之光線之正投 影位於散光區塊之示意圖，較佳地’每一發光二極體41的出 光截面414在對應的散光區塊35上的正投影418與對應的散 光區塊35的至少一部分重疊。然而，在其他實施例中，較上 地’每一出光截面226在對應的散光區塊35上的正投影亦可 以是與對應的散光區塊35完全重疊。也就是說，每一散光區 塊35的見度實質上約等於對應的發光二極體41發出的光線 200944900 * * - 照射於侧端面311上的區域的寬度。另外，值得注意的是， • 如圖四B所示，散光區塊35寬度的大小係與發光二極ί41 發光張角及發光二極體41與散光區塊35間的距離有關。 當發光二極體41發出光線後，在投射至導光板31側端 面3η的光線中，投射至遮光圖形352的光線部份係被遮光 圖形352反射後，再由燈罩42反射至側端面311之無被設置 散光區塊35的一導光板31區域(可參照圖四Β中左邊數來第 -及三個發光二極體41發出之光線之行徑）；而投射至遮光 © 圖形352間之間隙354的光線則直接入射至導光板31内(可 參照圖四Β中左親來第-個發光二極體41發出之光線之 行徑）。 -般來說’發S二極體41正前方的導紐31區域為亮 紋區（第一區）形成處，任兩發光二極體41間前方的導光 板31區域為暗紋區（第二區）形成處。 藉由上述位於發光二極體41正前方的散光區塊35之設 計，將射入發光二極體41正前方的導光板31區域之部分光 〇 線反射，將此被反射的部分光線反射至燈罩42後，再由燈罩 42反射至任兩發光二極體41間前方的導光板31區域，以降 低亮紋區（第一區)及暗紋區(第二區)間的亮度差異。因此，進 入¥光板31之側端面311之光線便不致過於集中於發光二極 體41正前方之導光板31區域，而是更加均勻地入射且分布 於導光板31内。 在較佳實施例中，上述遮光圖形352的材質係包含一油 墨，亦即上述遮光圖形352係可為油墨印刷而成。其中，上 10 200944900 述油墨係包含壓克力系列的材質。 另外，為了避免遮光圖形352遮掉過多的光線，上述遮 光圖形352的材質更包含一粉體，參雜於油墨中，使得部分 光線藉由粉體散射至導光板31内部(可參照圖四B中左邊數 來第二個發光二極體41之光線之行徑）。其中，上述粉體係 可包含一壓克力粉(PMMA)或一玻璃粉(Si〇2)。 而在另-實施例中，散魅塊35可料成—光導薄膜 (film) ’如此-來’便可以黏貼的方式貼附於導光板31側端 面311上之任何特定位置。 相較於習知技術’本發明之實施例的散光區塊35不需對 導光板之側端面311進行任何破壞性加工，只需藉由油墨 印刷或者光導細的軸，即可制解決亮暗朗效果。並 且，散光區塊35的位置可—再地改變，重建性極高。 請參晒五A驾五C，祕為本發日賊細形之不同Specifically, in the present embodiment, the position of each astigmatism block 35 corresponds to a different light-emitting diode 4, and each astigmatism block 35 has a plurality of light-shielding patterns 352' each adjacent two light-shielding patterns 352. There is a gap between them. The light-shielding patterns 352 are adapted to reflect a portion of the light illuminating thereon, wherein the light-shielding patterns 352 are disposed on the side end surface 311, and at least a portion of the light-shielding patterns 352 are located at the corresponding light-emitting diodes 41. The light emitted from the light-emitting diodes 41 in the region on the side end surface 311 and the portions of the light-emitting diodes 41 reflected by the side surface 311 and the light-shielding patterns 352 will be reflected by the lamp cover 42 to the side end surface 311. In a preferred embodiment, the astigmatism block 35 is disposed on the side end surface 311 of the light guide plate 31, and each astigmatism block 35 is located directly in front of each of the light emitting diodes 41. Please refer to FIG. 4D, which is a schematic diagram of the orthographic projection of the light of the light-emitting diode in the astigmatism block. Preferably, the light-emitting section 414 of each of the light-emitting diodes 41 is positive on the corresponding astigmatism block 35. Projection 418 overlaps at least a portion of the corresponding astigmatism block 35. However, in other embodiments, the orthographic projection of each of the light exit sections 226 on the corresponding astigmatism block 35 may also be completely overlapped with the corresponding astigmatism block 35. That is, the visibility of each astigmatism block 35 is substantially equal to the light emitted by the corresponding light-emitting diode 41. 200944900 * * - The width of the area irradiated on the side end surface 311. In addition, it is worth noting that, as shown in FIG. 4B, the width of the astigmatism block 35 is related to the illuminating angle of the illuminating diode φ41 and the distance between the illuminating diode 41 and the astigmatism block 35. After the light emitting diode 41 emits light, the portion of the light that is projected onto the end surface 3n of the light guide plate 31 is reflected by the light shielding pattern 352, and then reflected by the lamp cover 42 to the side end surface 311. There is no area of a light guide plate 31 in which the astigmatism block 35 is disposed (refer to the left and right of the figure Β, the path of the light emitted by the first and third light emitting diodes 41); and projected to the gap between the light blocking © patterns 352 The light of 354 is directly incident on the light guide plate 31 (refer to the path of the light emitted by the first light-emitting diode 41 in the left-hand side of FIG. 4). Generally speaking, the area of the guide 31 in front of the S-diode 41 is the formation of the bright-grained area (the first area), and the area of the light guide plate 31 in front of the two light-emitting diodes 41 is a dark-colored area (the first The second district) is formed. By the design of the astigmatism block 35 located directly in front of the light-emitting diode 41, a part of the pupil line incident on the region of the light guide plate 31 directly in front of the light-emitting diode 41 is reflected, and the reflected partial light is reflected to After the lamp cover 42, the lamp cover 42 is reflected to the area of the light guide plate 31 between the two light-emitting diodes 41 to reduce the difference in brightness between the bright-grained area (first area) and the dark-colored area (second area). Therefore, the light entering the side end surface 311 of the light-emitting plate 31 is not excessively concentrated on the region of the light guide plate 31 directly in front of the light-emitting diode 41, but is more uniformly incident and distributed in the light guide plate 31. In a preferred embodiment, the material of the light-shielding pattern 352 comprises an ink, that is, the light-shielding pattern 352 can be printed by ink. Among them, the above 10 200944900 inks contain materials of the acrylic series. In addition, in order to prevent the light-shielding pattern 352 from obscuring excessive light, the material of the light-shielding pattern 352 further includes a powder, which is mixed in the ink, so that part of the light is scattered by the powder to the inside of the light guide plate 31 (refer to FIG. 4B) In the middle left, the light of the second light-emitting diode 41 is taken. Wherein, the above powder system may comprise an acrylic powder (PMMA) or a glass powder (Si〇2). In another embodiment, the distraction block 35 can be formed so that the film can be attached to any specific position on the side end surface 311 of the light guide plate 31 in such a manner as to be adhered. Compared with the prior art, the astigmatism block 35 of the embodiment of the present invention does not need to perform any destructive processing on the side end surface 311 of the light guide plate, and the light and dark can be solved only by the ink printing or the thin axis of the light guide. Long effect. Moreover, the position of the astigmatism block 35 can be changed again and is highly reconfigurable. Please participate in the sun five A driving five C, the secret is the difference of the thief's fine
^例。赫照圖五A ’此實施例之遮細形為直條紋狀遮 光圖形352，此圖形可以達到部份遮光與散光的功能，且可 導光側端面時’橫向擴散的絲。請來 =圖五Β ’此貫施例之遮光圖形為弧邊條狀遮光圖形如，此 圖形可以純«，且可增加級触 橫向及縱向擴散的效果。請參照圖五c，此實圖 ^為圓形遮光圖形372，此_可以避 多j 下降，並且同樣地可增加光線投射至匕二 ‘面時，検向及縱向擴散的效果。 綜上所述，本㈣之實施例㈣光模組及其導光板具有 200944900 r ·、 下列優點： ' 、使原本壳紋區(發光二極體正前方)的亮度藉由散光 區塊的部份遮光功能而下降；使原本暗紋區(任兩發光二極體 41間前方)的亮度藉由遮光圖形及燈罩的反射光線而上升。藉 此，有效解決亮暗紋的問題，使背光模組能提供亮度更佳、曰 更均勻的面光源，並維持一定的整體輝度。 也就是說，進入導光板之側端面之光線不會過於集中於 發光—極體正泊方之導光板區域，而是更加均勻地入射且分 Ό 布於導光板内。 二、提供了重建性佳且可以有效解決亮暗紋的技術手段。 =X上所述者’僅為本發明之較佳實施例而已，當不能以此限 疋本，明實施之範圍，即大凡依本發明申請專利範圍及發明說 明1谷所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋 t範圍内。另外本發明的任一實施例或申請專利範圍不須達g ，發，所揭露之全部目的或優點或特點。此外’摘要部分和標 題f是用來輔助專利文件搜尋之用，並非用來限制本發明之權 Q 利範圍。 【圖式簡單說明】 藉由以下詳細之描述結合所附圖示，將可輕易的了解上 述内容及此項發明之諸多優點，其中： 圖一習知背光模組的示意圖； 圖二習知背光模組中導光板及發光二極體燈條的示意 圖； 圖二習知導光板的結構示意圖； 12 200944900 » 、圖四入及圖四3係、皆為本發明背光模組之實施财的 導光板及發光一.極體燈條的示意圖； 圖四C係為發光二極體及導光板之側視圖； 圖四D係為發光二極體之光線之正投影位於散光區塊 之示意圖；以及 圖五A至圖五C係為本發明遮光圖形之不同實施例。 【主要元件符號說明】 ❹ 1〇 :背光模組 11、 21、31 :導光板 11卜21卜311 :側端面（入光面） 112 :出光面 12、 40 :發光二極體燈條 121、41 :發光二極體 13 :反射片 14 :複數層光學薄膜 ^ 35 :散光區塊 352 :(直條紋狀)遮光圖形 354 :間隙 362 :弧邊條狀遮光圖形 372 :圓形遮光圖形 412 :透光封裝體 414 ·出光截面 418 :出光截面之正投影 42 ·•燈罩 43. ·電路板 13^Example. The mask of this embodiment is a straight stripe-shaped opaque pattern 352, which can achieve partial shading and astigmatism, and can be used to guide the side end side of the laterally diffused filament. Please come to = Figure 5 Β 'The shading pattern of this example is an arc-shaped strip shading pattern, such as this pattern can be pure «, and can increase the effect of horizontal and vertical diffusion. Referring to Figure 5c, this real image ^ is a circular shading pattern 372, which can avoid multi-j drop, and can similarly increase the effect of the slanting and longitudinal diffusion when the light is projected onto the ‘ ‘ surface. In summary, the embodiment (4) of the present invention (4) optical module and its light guide plate have 200944900 r ·, the following advantages: ', the brightness of the original shell region (directly in front of the light-emitting diode) by the portion of the astigmatism block The brightness of the light-shielding function is lowered; the brightness of the original dark-grained area (the front side of any two light-emitting diodes 41) is raised by the light-shielding pattern and the reflected light of the lampshade. Therefore, the problem of bright and dark lines can be effectively solved, so that the backlight module can provide a surface light source with better brightness and more uniformity, and maintain a certain overall brightness. That is to say, the light entering the side end surface of the light guide plate is not concentrated too much in the light guide plate region of the light-emitting body, but is more uniformly incident and distributed in the light guide plate. Second, it provides a technical means that is reconfigurable and can effectively solve bright and dark lines. The above description of 'X' is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent of the patent application scope and the invention description 1 Variations and modifications are still within the scope of the invention covered by t. In addition, any embodiment or application of the present invention does not require any of the objects or advantages or features disclosed. In addition, the 'summary part and the title' are used to assist in the search of patent documents, and are not intended to limit the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The above and other advantages of the invention will be readily understood by the following detailed description in conjunction with the accompanying drawings in which: FIG. Schematic diagram of the light guide plate and the light-emitting diode light bar in the module; Figure 2 is a schematic view of the structure of the conventional light guide plate; 12 200944900 » , Figure 4 and Figure 4 3 are all the guides for implementing the backlight module of the present invention. Schematic diagram of a light plate and a light-emitting strip; Figure 4C is a side view of the light-emitting diode and the light guide plate; Figure 4D is a schematic view of the orthographic projection of the light of the light-emitting diode in the astigmatism block; Figures 5A through 5C are different embodiments of the shading pattern of the present invention. [Description of main component symbols] ❹ 1〇: backlight module 11, 21, 31: light guide plate 11 卜 21 311: side end surface (light incident surface) 112: light-emitting surface 12, 40: light-emitting diode strip 121, 41 : Light-emitting diode 13 : Reflecting sheet 14 : Multiple layers of optical film ^ 35 : astigmatism block 352 : (straight stripe) shading pattern 354 : gap 362 : arc strip strip shading pattern 372 : circular shading pattern 412 : Light-transmissive package 414 · Light-emitting section 418: Orthographic projection of the light-emitting section 42 ·• Lampshade 43. ·Circuit board 13