1306972 九、發明說明： 【發明所屬之技術領域】 本發明乃係有關-種背光模組之導光板導光結構，尤指於可 令背光模組中導光板出光達均一性之勻化效能者。 【先前技術】 按，液晶顯不器（Liquid Crystal Display ; LCD)係目前應 用於做顯不功能極為廣泛之產品，主要係由液晶面板(LCD pane i ) _ U及背絲組（Back Light Module)所組成，而液晶面板雖可顯 示出晝面，但液晶面板本身並無法發光，顯示時所需之光源全部 得仰賴於背光模組，可見背光模組於一液晶顯示器之重要性。該 背光模組則必須要能夠提供高光輝度、且具勻化效果之光源，以 滿足液晶面板顯示時晝面晝質之美感要求。 如圖一所示，習知之背光模組工中，至少包括有—導光板工 1、-反糾1 2、缝轉之擴散則！ 3、及被不等之聚 鲁 光膜片14、以及燈源15和燈反射器16。 其中，導光板11乃以具良好之透光材質所製成，而大多為 光學級壓克力（PMMA)居多，該導光板i 2並具—出光面丄丄工， 以及一與出光面1 11呈相對應位置之反射面丄丄2，且至少於 出光面111及反射面112相連之一側面為入光面丄丄3， 又，反射面112之表面並形成眾多數目之導光點丄丄21，且 於反射面112外平貼予一反射片丄2 ;而入光面丄丄3外並配 有燈源1 5 (冷陰極燈管CCFL)，且該燈源1 5並會以己 曰μ—燈反射器 51306972 IX. Description of the Invention: [Technical Field] The present invention relates to a light guide structure of a light guide plate of a backlight module, and more particularly to a homogenization performance of a light guide plate in a backlight module. . [Prior Art] Press, Liquid Crystal Display (LCD) is currently used for products with a wide range of functions, mainly by LCD panel i _ U and Back Light Module The liquid crystal panel can display the surface, but the liquid crystal panel itself cannot be illuminated. The light source required for display depends on the backlight module, and the importance of the backlight module in a liquid crystal display can be seen. The backlight module must provide a light source with high brightness and uniformity to meet the aesthetic requirements of the enamel of the liquid crystal panel. As shown in Figure 1, the conventional backlight module work includes at least - light guide plate 1 , - anti - correction 1 2, the spread of the stitching! 3. The condensed film 14 and the light source 15 and the lamp reflector 16 are unequal. The light guide plate 11 is made of a good light transmissive material, and most of them are optical grade acrylic (PMMA), and the light guide plate i 2 has a light exit surface, and a light exit surface 1 11 is a reflecting surface 丄丄2 corresponding to the position, and at least one side of the light-emitting surface 111 and the reflecting surface 112 is a light-in surface 丄丄3, and a surface of the reflecting surface 112 forms a plurality of light guiding points.丄21, and is flatly attached to a reflecting sheet 丄2 outside the reflecting surface 112; and is disposed outside the light-emitting surface 丄丄3 and is provided with a light source 15 (cold cathode fluorescent tube CCFL), and the light source 15 is曰μ—light reflector 5
1306972 16予以大範圍包覆，俾使燈源15之光源可經其燈反射器工6 之反射，而可將光源集中朝導光板丄丄之入光面1i 3射入；該 經由入光面1 1 3進人導光板1 ；[畴之光源，—部份會即時由 出光面111離開出光’一部份則會射及於反射面Η 2中之導 光點1121後，才再經導光點i i 2 i之反射導引，而由出光 面113離開出光，且並有部份光源乃會直接透射過導光板工工 之反射面112後，而射及於反射片i 2之中，再經該反射片工 2之反射動作後，而反射回導光板i1内部，並再由其出光面工 1 1出光者。經由導光板i !出光面丄丨丄賴之光源，再藉由 擴散膜片13勻化動作，以及聚光膜片丄4之集光後，遂可成一 面狀光源之祕輸出，以供後續液晶面板欲做顯示時之所用。 上述中導光板11之本身’於越接近於燈源丨5位置區域， 越能接收到燈源15所輪出之光源，而為避免後續導光板i i出 光不均’—般反射面112中之導絲！丨2 i會配合變化成； 離燈源1 5 (入光面1丄3)越近時導光點丄丄2丄面積越小， 反之’離燈源15越遠時導光點1121面積越大，或是離燈源 15越近時各導光點1121密度越大，反之，離燈源i 5越遠 知各導光點1121密度越小，而以此導光點i 121之變化 V光板11達成光源之勻化。 6 1306972 2 3、擴散膜片2 4、以及燈源2 5和燈反射器2 6。其各元件 之相互配合與上述背光模組1大致相同，惟，導光板21之出光 面211或反射面212之任一者乃使之成眾多的導光柱體21 4，當入光面213接受了燈源2 5之光源，並往導光板21内 部傳遞，該光源射及於各導光柱體2 ；[ 4時，即使光源受其導光 柱體214之作用，達到光源聚光功效、及改變光源行進方向之 目的。 上述背光模組2中所運用之導光板21因設計成有眾多之導 光柱體214，利用導光柱體214所成之導光面對光源有聚光 之功效，故可大幅提高其出光輝度，而漸受業界所樂於採用。 然，如圖三所示，燈源2 5發出之光強並非全然一致，該燈 源2 5光強為中間位置呈最強，而漸向二側方向漸呈較弱之狀， 且二側端乃為是該燈源2 5之電極2 51，此電極2 51處更不 具備發光之功能，故於導光板21中之光場佈局並非—致，而會 於¥光板21之一側王現成弱光區A，且越遠離入光面213越 遠該弱光區A所佔之面積越大，而於弱光區A與非弱光區所輸出 之光源其光輝度自齡有差異，使弱光W輸出之絲光輝度較 低於非弱光區A輸出之光源，而終成該背光模組2出光不均，影 響光源後續之利用性。 心 【發明内容】 本發明乃财關-猶光模組之導域導光結構，其主要在 1306972 於背光模财燈源触之賴'，、轉歧之人絲軌於該導光 板内部時，該光源於導光板中之光場乃會呈現成有弱光區之現 象’而影響導光板^光時均勻化之表現。 為此，本發明主要目的乃在於’本發明導光板之出光面或反 :面之至少-者設置有眾多數量之導光柱體，且該導光柱體於受 之區域其深（高）度可予以加大，以增加導光柱體二側處 之導光面_，靖撕规__崎呈較大 面積之導絲處加強對光源之作用，達到導光板出光均一性之勾 化表現。 本發明之另-目的乃在於，她導光板之出光面或反射面 =少—者竭㈣翻，且傳伽於受光 區域其錐狀角度小於正常受光_狀角度，以利弱光 2光源可加強_光，_導_光均-性之勻化表現。 【實施方式】 明乃蝴—種背输之嫩輸構，如圖四所 至少包含有一導光板31、一反射片Μ、聚 擴散膜片3 4、以及燈源3 5和燈反射器3 6 ; 導^梅獅崎她痕U光面31 、=光面3 11位置呈相對應之反射面川、以及，至 =及反射面312成相連接之入光面313; 11乃使光源離開導光板31之用，反射面312則用 1306972 以將光源反射、改變統行進和，人細3 i 3侧以接受燈 源3 5 (如冷陰極燈管）之光源，並將光源向導光板3 i内部傳 遞。 其中，如圖四、五、六所示，該導光板31之出光面3ιι 或反射面312之至少-者設置有眾多數量之導光柱體3丄4， 該導光柱體3 1 4之截面健—敏字型1位於導光板3工弱 光區B處之導妹體3 1 4之導絲3 i 4 i係呈較深（高）處 之祕。於是’該燈源3 5發出之光源將由人光面3丄i進入於 導光板31之中，並朝導光板31内部傳遞，當光源射及於導光 柱體3 1 4時，即可令絲產生聚光之功效，導光板3 i上之弱 光區B甚至是不㈣之區域，射勤對應於導光柱體3 ^呈 較深（高）之處，形成較大面積之導光面3丄4丄，使該處雖獲 得之光源較少，__呈較权導絲3 i 4 i來予以加強續 處光源之聚光魏，岭祕導缺3 i之出光全面辆句化之 表現。 當本發明所應用之燈源3 5為發光二極體（L E D)時，如 圖七、八所示，亦會於導光板31形成弱光區C，此時，該弱光 區C甚至是不出光之區域’則可藉由對應於導光柱體川呈較 深⑷之處’形成較大面積之導光面3 i 4ι，使該處雖獲得 2源較少，但因利用呈較大之導光面314Μ予以加強該處 源之聚光功效，而有助於導光板31之出光全面達均勾化之表1306972 16 is widely covered so that the light source of the light source 15 can be reflected by the lamp reflector 6 and the light source can be concentrated toward the light incident surface 1i 3 of the light guide plate; 1 1 3 enters the light guide plate 1; [the light source of the domain, the part will immediately exit the light exiting from the light exit surface 111] and a portion will be incident on the light guide point 1121 in the reflective surface Η 2 before being guided again. The reflection of the light spot ii 2 i is separated from the light exiting surface 113, and a part of the light source is directly transmitted through the reflective surface 112 of the light guide plate, and is incident on the reflective sheet i 2 , After the reflection of the reflection sheet 2, it is reflected back to the inside of the light guide plate i1, and is then emitted by the light-emitting surface. Through the light guide plate i! light source illuminating light source, and then by the diffusion diaphragm 13 homogenization action, and the concentrating film 丄 4 collection light, 遂 can be a side light source secret output for subsequent The LCD panel is used for display. The closer the light guide plate 11 itself is to the position of the light source 丨 5, the more the light source of the light source 15 can be received, and the unevenness of the subsequent light guide plate ii is avoided. Guide wire!丨2 i will change with the change; the closer the light source is to the light source 1 5 (the light entrance surface 1丄3), the smaller the area of the light guide point 丄丄2丄, and the other the distance from the light source 15 is, the more the light guide point 1121 is. The closer the light source 15 is, the closer the density of the light guiding points 1121 is. On the contrary, the farther away from the light source i 5 is, the smaller the density of the light guiding points 1121 is, and the light guiding point i 121 changes. The light plate 11 achieves homogenization of the light source. 6 1306972 2 3. Diffusion diaphragm 2 4, and lamp source 25 and lamp reflector 26. The mutual cooperation of the components is substantially the same as that of the backlight module 1. However, any one of the light-emitting surface 211 or the reflective surface 212 of the light guide plate 21 is formed into a plurality of light-guiding columns 21 4, and is accepted by the light-incident surface 213. The light source of the light source 25 is transmitted to the inside of the light guide plate 21, and the light source is incident on each light guiding cylinder 2; [4, even if the light source is affected by the light guiding cylinder 214, the light collecting function and the light source are changed. The purpose of the direction of travel of the light source. The light guide plate 21 used in the backlight module 2 is designed to have a plurality of light guide columns 214, and the light guided by the light guide column 214 is used to converge the light source, so that the light emission can be greatly improved. And gradually getting used by the industry. However, as shown in FIG. 3, the light intensity emitted by the light source 25 is not completely uniform, and the light source 25 has the strongest intensity in the middle position and gradually becomes weaker in the two sides, and the two sides are opposite. It is the electrode 2 51 of the light source 25, and the electrode 2 51 has no function of illuminating, so the light field layout in the light guide plate 21 is not the same, but will be ready on the side of the light plate 21 The weak light region A, and the farther away from the light incident surface 213, the larger the area occupied by the weak light region A, and the light source outputted from the weak light region A and the non-weak light region has a difference in brightness from age. The brightness of the weak light W output is lower than that of the non-weak light area A, and the backlight module 2 is unevenly emitted, which affects the subsequent utilization of the light source. [Invention] The present invention is a guide-light guiding structure of the Caiguan-Yuguang module, which is mainly used in the backlight of the backlight model, and the diverted human wire is inside the light guide plate. The light field of the light source in the light guide plate may appear as a phenomenon of having a weak light region, which affects the uniformity of the light guide plate when it is lighted. To this end, the main object of the present invention is to provide a plurality of light guide columns of the light-emitting surface or the reverse surface of the light guide plate of the present invention, and the light guide column can be deep (high) in the region to be received. It should be enlarged to increase the light guiding surface at the two sides of the light guiding cylinder _, and the viscous __ 崎 is a large area of the guide wire to strengthen the effect on the light source, and achieve the performance of the uniformity of the light guide plate. Another object of the present invention is that the light-emitting surface or the reflecting surface of the light guide plate is less--exhaustively (four) turned over, and the cone-shaped angle of the gamma in the light-receiving area is smaller than the normal light-receiving angle, so that the weak light source can be used. Strengthen the _ light, _ lead _ light uniformity - homogenization performance. [Embodiment] The present invention is characterized in that: at least a light guide plate 31, a reflection sheet, a diffusion film 34, and a light source 35 and a lamp reflector 36 are included in FIG. ; guide Mei Shizaki her trace U-surface 31, = smooth surface 3 11 position corresponding to the reflective surface, and, to = and the reflective surface 312 into the connected light surface 313; 11 is to let the light source leave the guide For the light plate 31, the reflecting surface 312 is used to reflect the light source and change the light source, and the light source 3 i 3 side receives the light source of the light source 3 5 (such as a cold cathode fluorescent tube), and the light source guides the light plate 3 i Internal delivery. Wherein, as shown in FIG. 4, FIG. 5 and FIG. 6, at least one of the light-emitting surface 3 ιι or the reflective surface 312 of the light guide plate 31 is provided with a plurality of light guide columns 3 丄 4, and the cross-section of the light guide cylinder 3 1 4 - The sensitive type 1 is located at the light guide plate 3 at the weak light region B. The guide wire 3 i 4 of the guide body 3 1 4 is deeper (higher). Therefore, the light source emitted from the light source 35 will enter the light guide plate 31 from the human light surface 3丄i, and will be transmitted to the inside of the light guide plate 31. When the light source is incident on the light guide cylinder 3 1 4, the light can be made. The effect of concentrating light is generated, and the weak light region B on the light guide plate 3 i is even the region not (4), and the camera corresponds to the light guide cylinder 3 ^ being deeper (higher), forming a larger area of the light guide surface 3丄4丄, so that although there are fewer light sources in the place, __ is the right guide wire 3 i 4 i to strengthen the concentrating light source of the light source, the ridge secret guide lacks 3 i the light of the full sentence . When the light source 35 used in the present invention is a light emitting diode (LED), as shown in FIGS. 7 and 8, a weak light region C is also formed on the light guide plate 31. At this time, the weak light region C is even The area where no light is emitted can be formed by forming a large area of the light guiding surface 3 i 4ι corresponding to the light guiding column body (4), so that the source is less than 2, but the utilization is larger. The light guiding surface 314 加强 enhances the concentrating effect of the source, and helps the light guiding plate 31 to be fully integrated.