1287150 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種導光板及背光模組，尤其涉及一種採用側置 明之導光板及背光模組。 …、 【先前技術】 一由於/夜晶顯示斋面板之液晶本身不具發光特性，因而，爲達到顯 示效果，需給液晶顯示器面板提供一面光源裝置，如背光模組，其作 用在於向液晶顯示II面板供應亮度充分並且分佈均句之面光源。 先前技術之㈣式背光漁主要由光源、導光板、反射板、擴 ，與棱鏡板域。該絲可設置於導歧至少―搬將猶發射至該 =先板。該導光板之侧在於引導光線傳輸方向，使光線由導光板^ 出先面均勻出射，反射板相對該導光板之底面設置，以將由導 t射之光線再次反射入該導光板内，提高光線之利用率。擴散板盘 ΪΓίΐ對導光板之出光面依次設置，以使由導光板出射之光線分佈 更加均勻，進而提高液晶顯示器面板之亮度與均勻性。 币 - 採用側置式背光模組之液晶顯示器，由於其亮度較小，因此 、又，在小尺寸之液晶顯·得到敍制，如手齡倾。而—般 大尺寸之液晶顯7F1具杨重餘及亮度冑 / 本電腦，液晶電視等領域。 ^展之J如筆記 請;參閱第-® ’爲了使織讀光模_職餘及亮 Cathode Fluorescent Lamp,下稱 CCFL)11 及一導光板 i2， 12包括一出光面122，一與該出光面122相對之 : 光面122及該底面124之四入光面^ 接該出 導光板12内凹陷，使得該導光柄12之124之幾射心向該 該底面124形成四個斜面。該四個斜面分別朝向吏得 惟'該導光板12由於底面爲内凹結構，'其d光面之出射 ⑤ 「™說明一:1287150 IX. Description of the Invention: [Technical Field] The present invention relates to a light guide plate and a backlight module, and more particularly to a light guide plate and a backlight module using the side. ..., [Prior Art] Since the liquid crystal of the panel itself does not have the illuminating property, the liquid crystal display panel needs to provide a light source device, such as a backlight module, for the liquid crystal display II panel. Supply a full-face light source with sufficient brightness and distribution. The prior art (4) type backlight fishing mainly consists of a light source, a light guide plate, a reflection plate, a diffusion, and a prism plate field. The wire can be placed in the guide at least - the move will be launched to the = first plate. The side of the light guide plate guides the light transmission direction, so that the light is uniformly emitted from the light guide plate, and the reflector is disposed opposite to the bottom surface of the light guide plate to reflect the light emitted by the guide light into the light guide plate to improve the light. Utilization rate. The diffuser plate ΪΓίΐ is sequentially arranged on the light-emitting surface of the light guide plate to make the light distribution from the light guide plate more uniform, thereby improving the brightness and uniformity of the liquid crystal display panel. Coin - A liquid crystal display with a side-mounted backlight module, because of its low brightness, is also shown in a small-sized liquid crystal display, such as the age of the hand. And the large-size LCD display 7F1 has Yang heavy and brightness 胄 / this computer, LCD TV and other fields. ^J of the exhibition, please refer to the section -> 'In order to make the photographic phantom and illuminate the Cathode Fluorescent Lamp (hereinafter referred to as CCFL) 11 and a light guide plate i2, 12 including a light-emitting surface 122, one with the light The surface 122 is opposite to the surface of the light-emitting surface 122 and the bottom surface 124. The light-emitting surface of the light-guide surface 12 is recessed such that the centrings 124 of the light-guiding handle 12 form four slopes toward the bottom surface 124. The four inclined faces are respectively facing the 吏 惟 ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ”
1287150 το -,-ν 四wrLli向四個入光面 具有以下 Kmn之兩端發光亮度細 線之設計 光板12四個角落容易形成暗區。 s邛刀低導致該導 有鑒於此，提供一種具有較高之出射光均曰 高之導光板及背光模組實爲必要。 昼私、党度 【發明内容】 _ 、， .........η ，丨丹啕竿父而之出射光均句性，日舌旦土一 焭度咼之導光板，以及一種採用該導光板之背光模組。 里二 一種導光板，其包括-出絲，—與該出 連接該出光面及該底面之複數入光面’該底狄幾何中 -《光驗，其包純數統及—導光板，料光板包括一出 先=，-與該出光面相對之底面，以及連接該出絲 j面，該複數《分難近該複數人絲，該底面之輯中=3 導先板内凹陷’且該幾何中心與該底面之複數底邊形成—錐形體，使 得^面職概斜面，射每轉面分卿錢解行於相應底邊 之3L凸起，该V型凸起具有相同之形狀，且距離底邊越遠，V型凸 起排列密度越密，尺寸越大。 人現有技術概較，·導光板具有訂伽··採職該斜面之 底邊開始向該幾何中妨向形成由疏職，由小取之複數v型凸起 之設計，可起到加強幾何中心及其周圍部分對光束出㈣度之壓縮作 用二㈣有效提高整個導光板之出光亮度均勻性，而採用該導光板之 背光模組也具有出光亮度均勾性高之優點。 【實施方式】 下面將結合附圖及複數實施例對本發明之導光板，採用該導光板 之背光模組作進一步之詳細說明。 1287150 模組圖;， 板22包括出光二 =〇面f2及該底面224之四個入光面221二四= 在近该四個入光面221並向其照射入光線。 裏九源21刀別 该底面224之幾何中心向該導光板&内凹陷， 緣T何中心逐漸變薄。該幾何中心與該底 八別朝j 7體’使得該底面224形成四個斜面。該四個斜面 =朝一入光面221’而且每個斜面與對應之入光面： -複數平行於相應底邊之V型凸起1287150 το -, -ν Four wrLli to the four entrance surfaces The design of the following two ends of the Kmn brightness brightness line The four corners of the light board 12 are easy to form dark areas. In view of the above, it is necessary to provide a light guide plate and a backlight module having a higher uniform light emission. Smuggling, partying [invention] _,, ......... η, 丨 啕竿 啕竿 啕竿 啕竿 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 出 导 导 导 导 导 导The backlight module of the light guide plate is used. a light guide plate comprising: a wire, a plurality of light-incident surfaces connected to the light-emitting surface and the bottom surface, the bottom light geometry - the light test, the package number and the light guide plate, The light panel comprises a first surface, a bottom surface opposite to the light emitting surface, and a surface of the output yarn j, the plural number is difficult to be close to the plurality of human filaments, and the bottom surface is in the middle of the screen; The geometric center forms a cone-shaped body with the plurality of bottom edges of the bottom surface, so that the surface of the face is generally inclined, and the surface of each turn is divided into 3L protrusions of the corresponding bottom side, and the V-shaped protrusions have the same shape, and The farther away from the bottom edge, the denser the V-shaped projections are, and the larger the size. According to the prior art of the person, the light guide plate has the design of the singularity of the slanting surface, and the bottom edge of the slanting surface begins to form a slanting position in the geometric direction, and the design of the complex v-shaped bulge from the small one can enhance the geometry. The compression effect of the beam (four degrees) is reduced by the center and its surrounding parts. (4) The brightness uniformity of the light guide plate is effectively improved, and the backlight module using the light guide plate has the advantages of high brightness of the light. [Embodiment] Hereinafter, a light guide plate of the present invention will be further described in detail with reference to the accompanying drawings and the plurality of embodiments. 1287150 Module diagram; The board 22 includes the light-emitting two-side surface f2 and the four light-incident surfaces 221 of the bottom surface 224, which are adjacent to the four light-incident surfaces 221 and are irradiated with light.里九源21刀别 The geometric center of the bottom surface 224 is recessed into the light guide plate & the edge T is gradually thinner. The geometric center and the bottom of the body are such that the bottom surface 224 forms four slopes. The four inclined faces = toward a light incident surface 221' and each inclined surface and the corresponding light incident surface: - a complex V-shaped projection parallel to the corresponding bottom edge
型凸起228之换w I具有相同之形狀，且距離底邊越遠，V 不同ί Α+级，數__爲大小 &併母個ν型凸起228沿長度方向高度-致。 之^72弟三圖及第四圖’該導光板22沿垂直於入光面⑵ 第-底角0及頂角Θ3。第一底角们之取值範圍爲5〜60度， 弟^底角Θ2之取值範圍爲6〇〜m度，該頂綱 該=起=2:起228之間距之取值範圍爲請1‘毫ί X V t凸起228之南度之取值範圍爲〇· _〜^ 〇毫米。 拓？Λ於Γ丄底面224之幾何中心相對四個入光面221較遠，使該導光 $ 2，光面222相應位置之出光亮度較靠近相應入光面& 二一底角…、第二底角02及頂角 光束沿垂直於出光面222方=出射光束角度之控制，使大部分The w I of the type protrusion 228 has the same shape, and the farther away from the bottom side, V is different from 底+, the number __ is the size & and the parent v-shaped protrusion 228 is heightwise in the length direction. The second light guide plate 22 and the fourth image of the light guide plate 22 are perpendicular to the light incident surface (2), the first base angle 0 and the top corner angle Θ3. The range of the first base angle is 5 to 60 degrees, and the value of the bottom corner of the second corner is 6〇~m degrees. The top level is ==2: the range between the distances of 228 is The southerly value of 1' milliί XV t bump 228 is 〇· _~^ 〇 mm. Extension? The geometric center of the bottom surface 224 of the crucible is farther away from the four light incident surfaces 221, so that the light intensity of the light guide surface is relatively close to the corresponding light entrance surface & The bottom corner 02 and the apex angle beam are controlled perpendicular to the light exit surface 222 = the angle of the exit beam, so that most
1287150 本實細之導光板22可轉重量輕之透明概材料製成，如丙 稀酸樹脂、《_旨、聚乙_龄。本實施之線光源21可選用冷 陰極癸光燈管。 該出光面222為-放電霧面。該出光面之四角落處之霧化程度比 其相鄰位置之霧化程度大，胁解決魏絲21之兩端發光亮度相 對中間部分低導致該導光板22四個角落容易形成暗區之問題。 可以理解，本發明之導光板也可以是五邊形、讀形或者其他形 狀，且其底面相應形成五邊、六邊或其他多邊錐形體，該底面之每個 斜面㈣躺該導光板之複數人絲。相應之，本伽之背光模組也 包括複數光源與導光板複數入光面相配合。 清-併參閱第五圖及第六圖，本發明較^圭實施例二提供一種背光 模組40。該背光模、组40與較佳實施例一之背光模組2〇相似，盆不同 在於增加-反光罩44。該背光模組4〇包括四個線光㈣及一導光板 42。該導光板42包括-出光面422，四個入光面421，—底面 複數V型凸起428。 該反光罩44爲-圍住該導光板42及該複數線光源41之方框結 冓。该反光罩44朝向該導光板42之入光面421之四内側分別形成一 矩形凹槽44卜用於容納該四個線光源4]L。其中，該矩形凹槽441之 上下側邊442、443可夾住該導光板42。該反光罩44爲一體式結構。 由於該反鮮44爲-體式方框結構，所以具有較佳之機械強度， 可對該四個線光源41及該導光板42提供更佳之賴。該反光罩^ 爲具有良好反射光線能力之金屬材料製成，如銅或轉。另外，該反 光罩44也可於其朝向該導光板入光面之内側 進-步提高光能糊率。 崎膜用於 可以理解’本發明之線光源除了採用直線型冷陰極焚光燈管，也 :採用L型冷陰極癸光燈管，也可採用複數發光二極體點光源。另外， 本發明之反光罩之截面也可爲半_曲面之框結構。 本發日狀導光板具有以下優點··採職騎面之底邊開始向該幾 何中心方向職由疏職，由小到大之複數”凸起之設計，可起到 工28715〇 加強幾何中心及其周圍部分對光束出射角度之壓縮作用，從而有效提 - 阿整個導光板之出光亮度均勻性。而且該出光面爲一放電霧面且其四 角落處之霧化程度比其相鄰位置之霧化程度大，可解決由該線光源之 兩端發光亮度相對中間部分低導致該導光板四個角落容易形成暗區 _ 之問題，進一步提高出光亮度均勻性。另外，採用一體式之反光罩具 ' 有較佳之機械強度，可對該複數線光源及導光板提供更佳之保護。所 以，本發明之背光模組具有出光亮度均勻性高及機械強度高之優點。 • &综上所述，本發明確已符合發明專利要件，爰依法提出專利申 請。惟，以上所述者僅為本發明之較佳實施例，舉凡熟悉本案技藝之 人士，於援依本案發明精神所作之等效修飾或變化，皆應包含於以下 • 之申請專利範圍内。 、〜 、 【圖式簡單說明】 第一圖是現有技術側置式背光模組結構示意圖。 第=圖是本發明較佳實施例一之背光模組立體結構示意圖。 第三圖是第二圖沿ΙΠ — ΙΠ線之截面示意圖。 第四圖是第三圖局部IV之放大示意圖。 第五圖是本發明較佳實施例二之背光模組俯視示意圖。 第六圖是第五圖沿VI-VI線之截面示意圖。 【主要元件符號說明】 背光模組 20、40 線光源 2卜41 導光板 22、42 入光面 22卜 421 出光面 222 、 422 底面 224、424 V型凸起 228 、 428 反光罩 44 凹槽 441 側邊 442、4431287150 The light guide plate 22 of the present invention can be made of a light-weight transparent material such as acrylic resin, "_", "poly". The line source 21 of the present embodiment may be a cold cathode fluorescent tube. The light exit surface 222 is a -discharge matte surface. The degree of atomization at the four corners of the illuminating surface is greater than that of the adjacent position, and the problem that the illuminating brightness of the two ends of the weisha 21 is lower than the middle portion causes the four corners of the light guide plate 22 to easily form a dark region. . It can be understood that the light guide plate of the present invention may also be a pentagon, a read shape or the like, and the bottom surface thereof correspondingly forms a five-sided, six-sided or other polygonal cone, and each inclined surface of the bottom surface (four) lies on the plurality of light guide plates. Human silk. Correspondingly, the backlight module of the gamma also includes a plurality of light sources and a plurality of light-input surfaces of the light guide plate. Clear - and referring to the fifth and sixth figures, the present invention provides a backlight module 40 in a second embodiment. The backlight module, group 40 is similar to the backlight module 2A of the preferred embodiment, and the basin is different in that the reflector 42 is added. The backlight module 4 includes four line lights (four) and a light guide plate 42. The light guide plate 42 includes a light-emitting surface 422, four light-incident surfaces 421, and a bottom surface of a plurality of V-shaped protrusions 428. The reflector 44 is a box that encloses the light guide plate 42 and the plurality of line sources 41. The reflectors 44 are respectively formed on the inner side of the light incident surface 421 of the light guide plate 42 to form a rectangular recess 44 for accommodating the four line light sources 4]L. The upper and lower sides 442, 443 of the rectangular recess 441 can sandwich the light guide plate 42. The reflector 44 is of a unitary structure. Since the anti-fresh 44 has a box structure, it has better mechanical strength, and the four line sources 41 and the light guide 42 can be better served. The reflector ^ is made of a metal material with good light reflecting ability, such as copper or turn. In addition, the reflector 44 may further increase the light energy paste rate toward the inside of the light incident surface of the light guide plate. The chip is used for understanding. In addition to the linear cold cathode fluorescent lamp, the linear light source of the present invention also adopts an L-type cold cathode fluorescent lamp, and a plurality of light-emitting diode point light sources can also be used. In addition, the cross section of the reflector of the present invention may also be a semi-curved frame structure. The hair-shaped light guide plate of the present invention has the following advantages: · The bottom edge of the riding surface starts to be decentralized to the geometric center, and the design of the bulge from small to large can be used to strengthen the geometric center of 28715 And the surrounding part of the compression effect of the beam exit angle, thereby effectively improving the brightness uniformity of the entire light guide plate, and the light exit surface is a discharge matte surface and the atomization degree at the four corners thereof is closer than its adjacent position. The degree of atomization is large, and the problem that the brightness of the two ends of the line source is low relative to the middle portion causes the four corners of the light guide plate to form a dark area easily, thereby further improving the brightness uniformity of the light. In addition, the integrated reflector is used. The utility model has the better mechanical strength, and can provide better protection to the plurality of line light sources and the light guide plate. Therefore, the backlight module of the invention has the advantages of high uniformity of light emission brightness and high mechanical strength. The present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above is only a preferred embodiment of the present invention, and those who are familiar with the skill of the present invention Equivalent modifications or changes made by the company in accordance with the spirit of the invention shall be included in the scope of the following patents. ~, [Simplified description of the drawings] The first figure is a schematic diagram of the structure of the prior art side-mounted backlight module. Figure 3 is a schematic perspective view of a backlight module according to a preferred embodiment of the present invention. The third figure is a schematic cross-sectional view of the second figure along the ΙΠ-ΙΠ line. The fourth figure is an enlarged view of the part IV of the third figure. The figure is a top view of a backlight module according to a second preferred embodiment of the present invention. The sixth figure is a cross-sectional view of the fifth figure taken along line VI-VI. [Description of main component symbols] Backlight module 20, 40 line light source 2 Light plate 22, 42 light-incident surface 22 421 light-emitting surface 222, 422 bottom surface 224, 424 V-shaped protrusion 228, 428 reflector 44 groove 441 side 442, 443