η渗(更)正替换頁 1313776 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種導光板和背光模組，尤其涉及一種採用側置式照 明之導光板和背光模組。 【先前技術】 由於液晶顯示器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 用在於向液晶顯示器面板供應亮度充分並且分佈均勻之面光源。η ( (more) positive replacement page 1313776 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 side-mounted illumination. [Prior Art] Since the liquid crystal of the liquid crystal display panel itself does not have the illuminating property, in order to achieve the display effect, the liquid crystal display panel needs to provide a light source device, such as a backlight module, which functions to supply the liquid crystal display panel with sufficient brightness and uniform distribution. Surface light source.
先前技術之側置式背光模組主要由光源、導光板、反射板、擴散 板與棱鏡板組成。該光源可設置於導光板至少一側並將光線發射至該 導光板。該導光板之作用在於引導光線傳輸方向，使光線由導光板之 出光面均勻出射’反射板相對該導光板之底面設置，以將由導光板底 面出射之光線再次反射入該導光板内，提高光線之利用率。擴散板與 棱鏡板相對導光板之i光面依:欠設置，以使由導光板&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。 惟，採用側置式背光模組之液晶顯示器，由於其亮度較小，因此 般僅在小尺寸之液晶顯示器得到廣泛應用，如手機等領域。而—般 大尺寸之液晶顯不器具有向重量輕和亮度高方向發展之需求，如 本電腦，液晶電視等領域。 & 請參閱第-圖’爲了使側置式背光模組達到重量輕和亮度 果，先前技棘ί提供一種背光模組丨0 ’其包括四個冷陰極熒光燈HcdThe prior art side-mounted backlight module is mainly composed of a light source, a light guide plate, a reflection plate, a diffusion plate and a prism plate. The light source may be disposed on at least one side of the light guide plate and emit light to the light guide plate. The light guide plate is configured to guide the light transmission direction so that the light is uniformly emitted from the light exit surface of the light guide plate. The reflector is disposed opposite to the bottom surface of the light guide plate to reflect the light emitted from the bottom surface of the light guide plate into the light guide plate to improve the light. Utilization rate. The diffusing plate and the prism plate are opposite to the light guiding plate of the light guide plate, so that the light distribution by the light guide plate & is more uniform, thereby improving the brightness and uniformity of the liquid crystal display panel. However, liquid crystal displays using side-mounted backlight modules are widely used in small-sized liquid crystal displays, such as mobile phones, because of their low brightness. And the large-size LCD display has the demand for light weight and high brightness, such as the computer, LCD TV and other fields. & Please refer to the figure - 'In order to achieve the light weight and brightness of the side-mounted backlight module, the prior art provides a backlight module 丨0' which includes four cold cathode fluorescent lamps Hcd
Cathode Fluorescent Lamp,下稱 CCFL)ii 和一導光板 12，^S ^ 12包括-出光面122，一與該出光面122相對之底面124 光面122和該底面124之四入光面121。該底面m之幾何中、： 導光板12内凹陷，使得鱗光板12之厚度由邊緣向該幾何中 變薄。該幾何中心與該底面124之四個底邊形成—四面錐 ， 該底面124形成四個斜面。該四個斜面分別朝向該四入光 ， 四個CCFL11分別靠近該四個入光面121並向其照射光線。 邊 惟’該導光板12由於底面爲内凹結構，其將影響出光 叫 < 出射 1313776The Cathode Fluorescent Lamp (hereinafter referred to as CCFL) ii and a light guide plate 12, ^S ^ 12 include a light-emitting surface 122, a bottom surface 124 of the light-emitting surface 122, and a light-emitting surface 121 of the bottom surface 124. In the geometry of the bottom surface m, the inside of the light guide plate 12 is recessed such that the thickness of the scale plate 12 is thinned from the edge toward the geometry. The geometric center forms a four-sided cone with the four bottom edges of the bottom surface 124, and the bottom surface 124 forms four slopes. The four inclined faces respectively face the four incoming lights, and the four CCFLs 11 respectively approach the four light incident faces 121 and illuminate the light. The side light guide plate 12 has a concave structure due to the bottom surface, which will affect the light output < outgoing 1313776
|>J 光均勻性。而且採用四個CCFL11向四個入光面]? 具有以下缺點：該CCFU1之兩端發光亮度相對中:光線之設計 光板12四個角落容易形成暗區。 a Μ低導致該導 有鑒於此，提供一種具有較高之出射光均勾 向之導光板和背光模組實爲必要。 里2、7C度 【發明内容】 例說明一種具有較高之出射光均勻性，且重量輕、 儿度回之導光板，以及一種採用該導光板之背光模組。 一種導光板，其包括一出光面，一與該出光 ，該出光面和該底面之複數人光面，該底面之幾^^=導3 ^陷’該底面形成複數網點，其密度由其邊緣向該幾何中 大’且角落處之_密度比其靠近_人絲巾 ;^ 大。 之斜面之網點密度 光面—種1规組，其包純數統和—導桃，該導缺包括-出 該Γ面相對之底面，以及連接辦光面和該底面之複數 內 分別靠近該複數入光面，該底面之幾何中心向該 逐、、松陷，該底面形成複數_，其密度由其邊緣向該幾何中心 點且角落處之網點密度比其靠近相鄰入光面中心之斜面之網 邊缘ΐΐϊΐΓ比較，所料光板具有町伽：採職該底面之 個方向逐濟加大之網點密度設計可有效提高整 亮度均勻性高之ϊ‘ί均勻性，_鱗光板之背光模組亦具有出光 【實施方式】 之背合關和複數實施靖本發明之導光板，採_導光板 模組本㈣紐實關—提供—種背光 板22勺紅4先換 包括四個線光源21和一導光板22，該導光 匕.出光面222 ’ 一與該出光面222相對之底面224和連接 6 1313776 月日修(更)正督換頁 5近°亥底面224之四個入光面221。該四個線光源21分別 面f並向其照射人光線。《光_爲—_。 之厚=魏何中心向該導光板22内凹陷，使得該導光板22 3= Z何中心逐漸變薄。該幾何中心與該底面224之四 -四棱錐體，使得該底面224形成四個斜面。該四個斜面 2朝向相個入光面221，而且每個斜面與對應之入光面221成一 ⑽^網點228，每個斜面之網點 面2?4夕幽w、, 幾何中心方向逐漸加大。由於該底 面222相施/罢〜相對四個入光面221較遠，使該導光板22之出光 =2=應位置之出光亮度較靠近相應入光面四 =:== 光 =_加大之網點二 讀之斜面之傾斜度4=勻:尺據:，之底 底邊$之合理比例，來達到最佳之出光亮度均勻性效果。 者通複數網點228可通過油墨印刷之方式形成油墨網點，咬 掩模進行化學_產生《微細散射霧面之網^本實施例i 本網點或含有散射劑之油墨網點。 烯酸可選擇重量輕之透明樹脂材料製成，如丙 ==燈=_曰、聚乙稀樹脂等。本實施之線光源21可選用冷 另外，爲進一步解決該線光源21之兩 低導致該導光板22四個舰容易形成暗區之問題二 22可於底面224之四個角落進行網點密度加強設 角落處之_密度比其靠近221 + 四 用於提高相應雜之亮度。 ㈣、概讀大， 可以理解，本發明之導光板也可為五邊 狀，且其絲減祕五邊、六奴魏彡雜顧"=== 7 1313776 par 找一-—-~~—) 年月日修(更)正售.换頁j 斜面分別朝向該導光板之複數入光面。相應之，本發明之背光模組也 包括，數歧鱗光板概人絲她合。#導光板為_時，本發 月之奇光模組可採用圓形光源與該導光板搭配。 士另外，需要強調，本發明之導光板之底面除了設計爲一錐形内凹 、、’。構外還可3^|·爲―曲面内凹結構，該曲面可以係—球面也可以係 -橢球面。其中’該底面形成複數網點，且其密度由其邊緣向該幾何 中心2漸加大。上述設計同樣可達到本發明之技術效果。 斗π—併參閱第四圖和第五圖，本發明較佳實施例二提供一種背光 杈組40。该背光模組40與較佳實施例一之背光模組2〇相似，其不同 % 在於增加一反光罩44。該背光模組4〇包括四個線光源41和-導光板 42。該導光板42包括一出光面422，四個入光面421，一底面424和 複數網點428。|>J Light uniformity. Moreover, the use of four CCFLs 11 to the four entrance surfaces] has the following disadvantages: the brightness of the two ends of the CCFU1 is relatively high: the design of the light is easy to form dark areas in the four corners of the light board 12. a depreciation leads to this guide. In view of this, it is necessary to provide a light guide plate and a backlight module with a relatively high outgoing light. 2, 7C degrees [Summary of the invention] The example shows a light guide plate having a high uniformity of outgoing light, light weight, and a back light, and a backlight module using the light guide plate. A light guide plate comprising a light-emitting surface, a light-emitting surface, and a plurality of human light surfaces of the light-emitting surface and the bottom surface, wherein the bottom surface of the light-emitting surface forms a plurality of dots, the density of which is formed by the edge thereof To the geometry, the 'large' and the density of the corners are closer to the _ human silk scarf; The dot density of the beveled surface is a type 1 gauge group, and the package is a pure number and a guide peach. The guide includes a bottom surface opposite to the surface, and a plurality of the connection surface and the bottom surface respectively a plurality of light-incident surfaces, wherein the geometric center of the bottom surface is recessed, and the bottom surface forms a complex number _, the density of which is from the edge thereof to the geometric center point and the dot density at the corner is closer to the center of the adjacent light-incident surface Compared with the edge of the beveled net, the light plate has the same gamma: the direction of the bottom of the mesh is increased, and the dot density is designed to improve the uniformity of the brightness. ί 均匀 均匀 ί ί ί ί ί ί ί ί The group also has the light-emitting [embodiment] back-combination and the implementation of the light guide plate of Jing invention, the light guide plate module (four) New Real-off - provide a kind of backlight plate 22 spoons red 4 first change including four line light source 21 and a light guide plate 22, the light guide surface 222', a bottom surface 224 opposite to the light exit surface 222, and a connection 6 1313776, a Japanese repair (more), a change of the page 5, a near bottom surface 224 of the four light Face 221. The four line light sources 21 are respectively surface f and are irradiated with human light. "Light_for-_. The thickness = the center of Weihe is recessed into the light guide plate 22, so that the center of the light guide plate 22 3 = Z is gradually thinned. The geometric center and the four-sided pyramid of the bottom surface 224 are such that the bottom surface 224 forms four slopes. The four inclined faces 2 face the opposite light incident faces 221, and each inclined face forms a (10)^ mesh point 228 with the corresponding light incident face 221, and the mesh face of each inclined face is 2?4 evening, and the geometric center direction is gradually increased. . Since the bottom surface 222 is relatively far away from the four light-incident surfaces 221, the light output of the light guide plate 22=2=the light intensity of the position should be closer to the corresponding light-incident surface. 4=:== Light=_Increase The inclination of the slope of the second reading of the outlet is 4 = uniform: according to: a reasonable proportion of the bottom edge of the bottom to achieve the best brightness uniformity effect. The plurality of dots 228 can form an ink dot by ink printing, and bite the mask to perform chemistry. The mesh of the fine scattering matte surface is produced. This embodiment i is a dot or an ink dot containing a scattering agent. The olefinic acid may be selected from a light-weight transparent resin material such as C == lamp = 曰, polyethylene resin, and the like. In addition, the line source 21 of the present embodiment can be optionally cooled. In order to further solve the problem that the two light sources of the line source 22 are low, the four ships of the light guide plate 22 are likely to form dark areas. 22 The dot density enhancement can be performed at the four corners of the bottom surface 224. The density at the corner is closer to 221 + four than it is used to increase the brightness of the corresponding noise. (4), the reading is large, it can be understood that the light guide plate of the present invention can also be a five-sided shape, and its wire is reduced to five sides, six slaves Wei Wei miscellaneous care "=== 7 1313776 par to find a ---~~ —) Year and month repair (more) is on sale. The page j is inclined to face the multiple entrance faces of the light guide plate. Correspondingly, the backlight module of the present invention also includes a digital slats panel. #When the light guide plate is _, the moon light module of this month can be matched with the light guide plate by a circular light source. In addition, it should be emphasized that the bottom surface of the light guide plate of the present invention is designed to be a tapered recess, '. The outer structure can also be 3^|· as a curved surface concave structure, which can be either a spherical surface or an ellipsoid surface. Wherein the bottom surface forms a plurality of dots, and its density is gradually increased from its edge toward the geometric center 2. The above design can also achieve the technical effects of the present invention. Π—and referring to the fourth and fifth figures, a preferred embodiment 2 of the present invention provides a backlight unit 40. The backlight module 40 is similar to the backlight module 2A of the first embodiment except that a reflector 44 is added. The backlight module 4A includes four line light sources 41 and a light guide plate 42. The light guide plate 42 includes a light exit surface 422, four light incident surfaces 421, a bottom surface 424 and a plurality of dots 428.
該反光罩44爲一圍住該導光板42和該複數線光源41之方框結 構。該反光罩44朝向該導光板42之入光面421之四内侧分別形成一 矩形凹槽441，用於容納該四個線光源4卜其中，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。 。上由於该反光罩44冑-體式方框結構，所以具有較佳之機械強度， 可職四個線规41和鱗光板42提供更佳之賊。該反光罩Μ 爲具有良好反射光線能力之金屬材料製成，如銅或_。另外，該反 ，軍44也可於其朝向該導光板人光面之職—全反射膜，用於 進—步提高光能利用率。 可以理解’本發明之光源除了採用直線型冷陰極螢光燈管，也可 ，用L型或關冷陰鋪光燈管，也可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圓形曲面之框結構。 本發日仅導光板具有町優點：_觀底蚊邊緣開始向該幾 了中心方向稍加大之賴密度設計可纽提高整個導光板之出光 =度均勻性。而且該導光板於底面之複數角落進行網點密度加強設 二，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 複數角容易形成暗區之問題，進—步提高出光亮度均句性。另外， 1313776 ::The reflector 44 is a block structure surrounding 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 441 for receiving the four line light sources 4, wherein the upper and lower sides 442, 443 of the rectangular recess 441 can be The light guide plate 42 is clamped. The reflector 44 is of a unitary structure. . Due to the 胄-frame structure of the reflector 44, it has better mechanical strength, and the four wire gauges 41 and the stencil 42 provide a better thief. The reflector Μ is made of a metal material that has a good ability to reflect light, such as copper or _. In addition, the anti-Army 44 can also be used as a full-reflection film for the light-emitting surface of the light guide plate for improving the utilization of light energy. It can be understood that the light source of the present invention can be used in addition to a linear cold cathode fluorescent lamp, or an L-shaped or a closed cold-lighting light tube, or a plurality of light-emitting diode point light sources. In addition, the cross section of the reflector of the present invention may also be a frame structure of a semi-circular curved surface. On the day of the launch, only the light guide plate has the advantage of the town: _ the bottom of the mosquito bottom edge begins to increase slightly toward the center of the density design to increase the light output of the entire light guide plate = degree uniformity. Moreover, the light guide plate is provided with a dot density enhancement at a plurality of corners of the bottom surface, which can solve the problem that the light-emitting brightness of the two ends of the line light source is relatively low relative to the middle portion, and the complex angle of the light guide plate is easy to form a dark region, and the light brightness is further improved. Uniformity. In addition, 1313776 ::
樣(更)正瞀換頁I 採用一體式之反光罩具有較伟夕+ 板提供更奴賴。所以，杯度，可_概線光源和導光 和機械強度高之優點本㈣之f光模組具料絲度均勾性高 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，社所述者僅為本㈣讀佳實補，舉ίΐΐ 人士 ’於碰核發明簡所叙紐修飾或變化 含 之申請專利範酬。 【圖式簡單說明】 第一圖係先前技術側置式背光模組結構示意圖。 • 第二圖係本發明較佳實施例一之背光模組立體結構示意圖。 第三圖係第二圖沿m-πι線之戴面示意圖。 第四圖係本發明較佳實施例二之背光模組俯視示意圖。 第五圖係第四圖沿V-V線之戴面示意圖。 【主要元件符號說明】 背光模組 20、40 線光源 21、41 導光板 22、42 入光面 221 ' 421 出光面 222'422 底面 224 、 424 網點 228 、 428 反光罩 44 凹槽 441 側邊 442、443 9The sample (more) is changing the page I. The one-piece reflector has a more versatile + plate. Therefore, the cup degree, the advantages of the light source and the light guide and the high mechanical strength of the (f) optical module have a high degree of hookiness. The invention has indeed met the requirements of the invention patent, File a patent application. However, the only ones mentioned in the company are the (4) readings, and the people who apply for the patents are modified or changed. [Simple description of the diagram] The first figure is a schematic diagram of the structure of the prior art side-mounted backlight module. The second figure is a schematic view of a three-dimensional structure of a backlight module according to a preferred embodiment of the present invention. The third figure is a schematic view of the second figure along the m-πι line. The fourth figure is a top view of a backlight module according to a second preferred embodiment of the present invention. The fifth figure is a schematic view of the wearing surface along the V-V line in the fourth figure. [Main component symbol description] backlight module 20, 40 line light source 21, 41 light guide plate 22, 42 light incident surface 221 '421 light exit surface 222'422 bottom surface 224, 424 mesh point 228, 428 reflector 44 groove 441 side 442 443 9