TWI382242B - Light-guiding structrure, light guide plate and backlight module having the same - Google Patents
Light-guiding structrure, light guide plate and backlight module having the same Download PDFInfo
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Description
本發明關於一種導光結構及導光板,特別是關於一種同時具備擴光以及集光效果之導光結構及導光板。The invention relates to a light guiding structure and a light guiding plate, in particular to a light guiding structure and a light guiding plate which simultaneously have the effects of light expansion and light collecting.
平面顯示器使許多電子裝置得以薄型化。目前普遍應用於各種電子裝置的液晶顯示器是利用被動發光來顯示影像,而背光模組為此類平面顯示器之重要元件之一。為了使出光較為均勻同時增加亮度,於一背光模組中通常包含具有擴光功能的擴光片(diffuser)以及具有集光功能的增亮膜(brightness enhancement film;BEF)。舉例而言,習知側光型背光模組之光學膜片大多包含兩片增亮膜以及一片擴光片。直下型背光模組之光學膜片大多包含一片擴光板以及三片擴光片,或者是一片增亮膜以及兩片擴光片。上述背光模組之光學膜片組合雖然具備較佳的光學特性,然而,背光模組的成本卻無法有效的降低。此外,由於增亮膜之表面結構具有高度規則性,因此一次折射的光線與二次折射的光線會產生干涉而造成疊紋(moire)現象。Flat panel displays enable many electronic devices to be thinned. Liquid crystal displays, which are currently commonly used in various electronic devices, use passive illumination to display images, and backlight modules are one of the important components of such flat displays. In order to make the light output more uniform and increase the brightness, a backlight module usually includes a diffuser having a light-expanding function and a brightness enhancement film (BEF) having a light collecting function. For example, the optical film of the conventional side-lit backlight module mostly includes two brightness enhancing films and one piece of light diffusing film. The optical film of the direct type backlight module mostly includes a light-diffusing plate and three light-expanding sheets, or a brightness enhancement film and two light-emitting sheets. Although the optical film combination of the backlight module has better optical characteristics, the cost of the backlight module cannot be effectively reduced. In addition, since the surface structure of the brightness enhancing film is highly regular, the primary refracted light and the secondary refracted light interfere to cause a moire phenomenon.
因此,若能提供一導光結構設計使其同時具備擴光以及集光效果,即可獲得維持良好光學特性同時降低背光模組製造成本的效果。Therefore, if a light guiding structure design is provided to have both light expansion and light collecting effects, the effect of maintaining good optical characteristics while reducing the manufacturing cost of the backlight module can be obtained.
本發明提供一種同時具備擴光及集光效果的導光結構及包含該導光結構之導光板及背光模組。The present invention provides a light guiding structure having both a light-expanding and collecting effect and a light guiding plate and a backlight module including the light guiding structure.
依本發明之一實施例,一種導光結構包含一入光面、一出光面及至少一長形溝槽。出光面呈一弧面並突出於該入光面,長形溝槽之開口形成於出光面上,且長形溝槽的長軸方向與入光面的法線方向垂直並將導光結構分為大 致對稱分佈的複數區塊。According to an embodiment of the invention, a light guiding structure includes a light incident surface, a light exit surface, and at least one elongated trench. The light-emitting surface has a curved surface and protrudes from the light-incident surface, and the opening of the elongated groove is formed on the light-emitting surface, and the long-axis direction of the elongated groove is perpendicular to the normal direction of the light-incident surface and the light-guiding structure is divided Big A complex block that is symmetrically distributed.
依本發明之另一實施例,一種導光板包含一透光基板以及複數第一導光結構。透光基板具有一第一入光面以及一第一出光面。第一導光結構設置於透光基板上,且各個第一導光結構包含一第二入光面、一第二出光面、及至少一長形溝槽。第二入光面貼覆透光基板之第一出光面,且第二出光面呈一弧面並突出於第二入光面。長形溝槽之開口形成於第二出光面上,且長形溝槽的長軸方向與第二入光面的法線方向垂直並將導光結構分為大致對稱分佈的複數區塊。According to another embodiment of the present invention, a light guide plate includes a light transmissive substrate and a plurality of first light guiding structures. The transparent substrate has a first light incident surface and a first light exit surface. The first light guiding structure is disposed on the transparent substrate, and each of the first light guiding structures includes a second light incident surface, a second light emitting surface, and at least one elongated groove. The second light-incident surface is attached to the first light-emitting surface of the transparent substrate, and the second light-emitting surface has a curved surface and protrudes from the second light-incident surface. The opening of the elongated groove is formed on the second light-emitting surface, and the long-axis direction of the elongated groove is perpendicular to the normal direction of the second light-incident surface and the light-conducting structure is divided into a plurality of substantially symmetrically distributed blocks.
依本發明之另一實施例,一種背光模組包含一透光基材、設置於透光基材上的複數第一導光結構、及至少一發光元件。透光基材具有一第一入光面及一第一出光面,且各個第一導光結構包含一第二入光面、一第二出光面、及至少一長形溝槽。第二入光面貼覆透光基板之第一出光面,且第二出光面呈一弧面並突出於第二入光面。長形溝槽之開口形成於第二出光面上,且長形溝槽的長軸方向與第二入光面的法線方向垂直並將導光結構分為大致對稱分佈的複數區塊。發光元件設置於透光基材的第一入光面的一側。According to another embodiment of the present invention, a backlight module includes a light transmissive substrate, a plurality of first light guiding structures disposed on the light transmissive substrate, and at least one light emitting element. The light transmissive substrate has a first light incident surface and a first light emitting surface, and each of the first light guiding structures includes a second light incident surface, a second light emitting surface, and at least one elongated trench. The second light-incident surface is attached to the first light-emitting surface of the transparent substrate, and the second light-emitting surface has a curved surface and protrudes from the second light-incident surface. The opening of the elongated groove is formed on the second light-emitting surface, and the long-axis direction of the elongated groove is perpendicular to the normal direction of the second light-incident surface and the light-conducting structure is divided into a plurality of substantially symmetrically distributed blocks. The light emitting element is disposed on one side of the first light incident surface of the light transmissive substrate.
藉由前述各個實施例之設計,導光結構的弧形出光面可提供擴光效果並避免疊紋現象產生,且於弧形出光面上設置的長形溝槽,可使光線被溝槽的內壁反射或折射而同時獲得集光的效果。With the design of the foregoing various embodiments, the curved light-emitting surface of the light guiding structure can provide a light-expanding effect and avoid the occurrence of moiré, and the elongated groove provided on the curved light-emitting surface can make the light be grooved. The inner wall reflects or refracts while obtaining the effect of collecting light.
請同時參照圖1a及圖1b,依本發明一實施例之導光結構1包含一入光面11以及一出光面12,入光面11為一平面且出光面12突出於入光面11並呈一弧面,舉例而言,出光面12可為一圓弧面、橢圓弧面、拋物面或雙曲面等等。再者,導光結構1具有一開口形成於出光面12上且朝入光面11開設的 長形溝槽13,且該長形溝槽13的長軸方向(例示為Y方向)與入光面11的法線方向(例示為Z方向)垂直,使導光結構1分為兩個外形大致相同且對稱分佈的弧形體。進一步說明,由於實際製程上會產生公差,導光結構1不一定需要形成兩個外形完全對稱的弧形體,而是外形大致對稱的弧形體即能獲得相同的效果。圖1b所示之實施例中,溝槽13沿垂直長軸方向(即沿X方向)切割形成的截面具有V形的輪廓,舉例而言,V形輪廓頂角θ的角度範圍可為30至140度,較佳者為50至100度。需注意者,溝槽13的內壁不限定為一平面而亦可為一曲面,故溝槽13的截面亦可具有U形、圓弧形、橢圓弧形、拋物線形或雙曲線形等的輪廓。Referring to FIG. 1a and FIG. 1b, a light guiding structure 1 according to an embodiment of the invention includes a light incident surface 11 and a light exit surface 12. The light incident surface 11 is a flat surface and the light exit surface 12 protrudes from the light incident surface 11 and In a curved surface, for example, the light-emitting surface 12 can be an arc surface, an elliptical arc surface, a paraboloid or a hyperboloid, and the like. Furthermore, the light guiding structure 1 has an opening formed on the light-emitting surface 12 and opened toward the light-incident surface 11 The elongated groove 13 has a long axis direction (illustrated as a Y direction) perpendicular to a normal direction (illustrated as a Z direction) of the light incident surface 11 to divide the light guiding structure 1 into two shapes. An approximately identical and symmetrically distributed arcuate body. Further, since the tolerance is generated in the actual process, the light guiding structure 1 does not necessarily need to form two arc bodies having a completely symmetrical shape, but an arc shape having a substantially symmetrical shape can obtain the same effect. In the embodiment shown in Fig. 1b, the section formed by cutting the groove 13 in the direction of the vertical long axis (i.e., in the X direction) has a V-shaped profile. For example, the angle of the V-shaped profile apex angle θ may range from 30 to 140 degrees, preferably 50 to 100 degrees. It should be noted that the inner wall of the groove 13 is not limited to a plane but also a curved surface, so the cross section of the groove 13 may also have a U shape, a circular arc shape, an elliptical arc shape, a parabolic shape or a hyperbolic shape. profile.
請參照圖1b,藉由溝槽13的設置,入射角度較大的光線L1可被溝槽13的內壁反射至設定的方向,且具另一入射角度的光線L2由溝槽13的內壁出光而折射至設定方向,因此本實施例具V形溝槽的導光結構1可提供集光的效果。另外,請參照光線L3的行進路徑,其被溝槽13的內壁反射至弧形的出光面12,經折射後形成較大的出光角度出光,因此本實施例具弧形出光面12的導光結構1亦具有擴光的效果。再者,藉由調整溝槽13內壁相對於入光面11的角度可控制集光的效果,且藉由調整出光面12的弧度可控制擴光的效果。Referring to FIG. 1b, by the arrangement of the grooves 13, the light beam L1 having a larger incident angle can be reflected by the inner wall of the groove 13 to a set direction, and the light beam L2 having another incident angle is covered by the inner wall of the groove 13. The light is refracted to the set direction, so the light guiding structure 1 having the V-shaped groove of the present embodiment can provide the effect of collecting light. In addition, please refer to the traveling path of the light beam L3, which is reflected by the inner wall of the groove 13 to the curved light-emitting surface 12, and is refracted to form a large light-emitting angle, so that the guide of the curved light-emitting surface 12 of this embodiment The light structure 1 also has the effect of light expansion. Furthermore, the effect of collecting light can be controlled by adjusting the angle of the inner wall of the groove 13 with respect to the light incident surface 11, and the effect of light amplification can be controlled by adjusting the curvature of the light surface 12.
需注意者,本發明之導光結構的溝槽數量不限定為一個,其亦可包含多個溝槽。請參照圖2,本發明另一實施例之導光結構2與導光結構1相似,差別在於導光結構2具有兩道彼此相交的V形溝槽13、13’,亦即兩道V形溝槽13、13’的長軸方向彼此垂直交錯,使導光結構2分為四個大致對稱分佈的弧形體。同樣地,由於實際製程上會產生公差,導光結構2不一定需要形成四個外形完全對稱的弧形體,而是外形大致對稱的弧形體即能獲得相同的效果。請參照圖3,本發明另一實施例之導光結構3與導光結構2相似,差 別在於導光結構3並未形成如圖1或圖2所示其沿長軸方向延伸的範圍橫跨整個入光面的溝槽13,而是於溝槽13的兩端保留側壁14,而側壁14的外表面為出光面12的延伸而呈一弧面,藉由側壁14的弧形外表面可進一步提高擴光的效果。It should be noted that the number of grooves of the light guiding structure of the present invention is not limited to one, and may also include a plurality of grooves. Referring to FIG. 2, a light guiding structure 2 according to another embodiment of the present invention is similar to the light guiding structure 1. The difference is that the light guiding structure 2 has two V-shaped grooves 13, 13' intersecting each other, that is, two V-shaped shapes. The long axis directions of the grooves 13, 13' are vertically staggered with each other, so that the light guiding structure 2 is divided into four substantially symmetrically distributed arc bodies. Similarly, since the tolerance is generated in the actual process, the light guiding structure 2 does not necessarily need to form four arc-shaped bodies with completely symmetrical shapes, but an arc-shaped body having a substantially symmetrical shape can obtain the same effect. Referring to FIG. 3, the light guiding structure 3 of another embodiment of the present invention is similar to the light guiding structure 2, and is poor. The other reason is that the light guiding structure 3 does not form the groove 13 extending across the entire light incident surface as shown in FIG. 1 or FIG. 2, but retains the side wall 14 at both ends of the groove 13, and The outer surface of the side wall 14 is a curved surface extending from the light-emitting surface 12, and the curved outer surface of the side wall 14 can further enhance the light-expanding effect.
本發明之導光結構的尺寸可任意放大縮小以應用於各種光學元件上,以下說明本發明之導光結構的應用方式,但不限於以下所提出之實施例。請參照圖4,依本發明一實施例之導光板4包含一透光基板41及複數第一導光結構42。透光基板41具有一第一入光面411以及一第一出光面412。第一導光結構42具有一第二入光面421、一第二出光面422及一長形溝槽423。第二入光面421貼覆透光基板之第一出光面412,第二出光面422呈一弧面並突出於第二入光面421,且長形溝槽423之開口形成於第二出光面422上。長形溝槽423的長軸方向與第二入光面421的法線方向垂直並將導光結構42分為大致對稱分佈的複數弧形塊。需注意應用於直下型背光模組之導光板的入光面為平行第一出光面412的入光面411,且應用於側光型背光模組之導光板的入光面為垂直第一出光面412的入光面411’。The size of the light guiding structure of the present invention can be arbitrarily enlarged and reduced to be applied to various optical elements. The following describes the application of the light guiding structure of the present invention, but is not limited to the embodiments set forth below. Referring to FIG. 4 , a light guide plate 4 according to an embodiment of the invention includes a transparent substrate 41 and a plurality of first light guiding structures 42 . The transparent substrate 41 has a first light incident surface 411 and a first light exit surface 412. The first light guiding structure 42 has a second light incident surface 421 , a second light emitting surface 422 , and an elongated trench 423 . The second light-incident surface 421 is attached to the first light-emitting surface 412 of the transparent substrate. The second light-emitting surface 422 has a curved surface and protrudes from the second light-incident surface 421, and the opening of the elongated trench 423 is formed in the second light-emitting surface. On face 422. The long axis direction of the elongated groove 423 is perpendicular to the normal direction of the second light incident surface 421 and divides the light guiding structure 42 into a plurality of substantially curved symmetrical blocks. It should be noted that the light incident surface of the light guide plate applied to the direct type backlight module is a light incident surface 411 parallel to the first light exit surface 412, and the light incident surface of the light guide plate applied to the side light type backlight module is a vertical first light output. The light incident surface 411' of the surface 412.
請參照圖5a至圖5d,複數第一導光結構42可以不同方式排列於一透光基材5表面上,例如其可排列為一矩陣(圖5a所示)、同心圓(圖5b所示)、多邊形(圖5c所示)、波浪形(圖5d所示)甚至不規則排列均可。此外,導光結構42排列於透光基材5表面的密度可依需求加以任意設計,且透光基材5可為一透光膜、一擴散片、一增亮膜、一偏光膜、或一背光板等均可。Referring to FIG. 5a to FIG. 5d, the plurality of first light guiding structures 42 may be arranged on the surface of a transparent substrate 5 in different manners, for example, they may be arranged in a matrix (shown in FIG. 5a) and concentric circles (shown in FIG. 5b). ), a polygon (shown in Figure 5c), a wave (shown in Figure 5d), or even an irregular arrangement. In addition, the density of the light guiding structure 42 arranged on the surface of the transparent substrate 5 can be arbitrarily designed according to requirements, and the transparent substrate 5 can be a transparent film, a diffusion sheet, a brightness enhancement film, a polarizing film, or A backlight board or the like can be used.
請參照圖6a,依本發明一實施例之導光板更可包含設置於入光面411上且位於第一導光結構42對側的第二導光結構43、44、45。舉例而言,複數第二導光結構可為長軸方向彼此平行的圓弧形結構(如標號43所示)、橢圓弧形結構、拋物面結構、雙曲面結構、V形結構(如標號44所示)、梯形結構(如 標號45所示)、圓錐形結構、多角錐形結構或以上之組合。需注意者,圖6a所示之實施例中,第二導光結構43、44、45為長條形,但不限於此,第二導光結構亦可為不連續的凸點結構。此外,如圖6b所示,設置於出光面412上的第一導光結構42亦可同時設置於入光面411上作為第二導光結構46。Referring to FIG. 6 a , the light guide plate according to an embodiment of the invention may further include second light guiding structures 43 , 44 , 45 disposed on the light incident surface 411 and opposite to the first light guiding structure 42 . For example, the plurality of second light guiding structures may be arc-shaped structures (as indicated by reference numeral 43), elliptical curved structures, parabolic structures, hyperbolic structures, and V-shaped structures (such as reference numeral 44) in which the long axis directions are parallel to each other. Show), ladder structure (such as Reference numeral 45), a conical structure, a polygonal pyramid structure or a combination of the above. It should be noted that in the embodiment shown in FIG. 6a, the second light guiding structures 43, 44, 45 are elongated, but are not limited thereto, and the second light guiding structure may also be a discontinuous bump structure. In addition, as shown in FIG. 6 b , the first light guiding structure 42 disposed on the light emitting surface 412 can also be disposed on the light incident surface 411 as the second light guiding structure 46 .
請參照圖7,本發明一實施例之直下型背光模組7包含一導光板4以及發光元件71,且導光結構42形成於出光面412上。發光元件71則設置於導光板4的入光面411的一側。圖7所示之實施例為一直下型背光模組,因此導光板4之入光面411平行出光面412。本實施例之背光模組7更包含一光學膜片72,其設置於導光板4以及發光元件71之間。舉例而言,光學膜片72可為一擴光片、偏光片或以上之組合等等。另外,雖然於本實例中設有第一導光結構42的光學基材例示為一導光板4,但其並不限定,例如亦可為具有霧度的擴光層或無霧度的透光膜層等等。Referring to FIG. 7 , the direct type backlight module 7 includes a light guide plate 4 and a light emitting element 71 , and the light guiding structure 42 is formed on the light emitting surface 412 . The light-emitting element 71 is disposed on one side of the light-incident surface 411 of the light guide plate 4. The embodiment shown in FIG. 7 is a direct-type backlight module, so that the light-incident surface 411 of the light guide plate 4 is parallel to the light-emitting surface 412. The backlight module 7 of the embodiment further includes an optical film 72 disposed between the light guide plate 4 and the light-emitting element 71. For example, the optical film 72 can be a light diffuser, a polarizer, or a combination of the above, and the like. In addition, although the optical substrate provided with the first light guiding structure 42 in the present example is exemplified as a light guide plate 4, it is not limited, and may be, for example, a haze having a haze or a haze having no haze. Film layer and so on.
請參照圖8,本發明一實施例之側光型背光模組8包含一導光板4以及一發光元件81,導光結構42形成於出光面412上,且發光元件81設置於導光板4的入光面411’的一側。圖8所示之實施例為一側光型背光模組,因此導光板4之入光面411’垂直出光面412,且一反射層82設置於導光板4其相對出光面412的另一側。舉例而言,上述背光模組7、8之發光元件71、81可為一發光二極體(Light-Emitting Diode;LED)或冷陰極螢光燈(Cold Cathode Fluorescent Lamps;CCFL)。再者,雖於圖8中未描繪出,但熟悉本領域技術人士必能瞭解導光板4上方可再設置擴散片、稜鏡增亮片等光學膜片結構,以進一步提高出光亮度及光均勻性。Referring to FIG. 8 , an edge-light type backlight module 8 according to an embodiment of the present invention includes a light guide plate 4 and a light-emitting element 81 . The light-guiding structure 42 is formed on the light-emitting surface 412 , and the light-emitting element 81 is disposed on the light guide plate 4 . One side of the light incident surface 411'. The embodiment shown in FIG. 8 is a side light type backlight module. Therefore, the light incident surface 411 ′ of the light guide plate 4 is perpendicular to the light exit surface 412 , and a reflective layer 82 is disposed on the other side of the light guide plate 4 opposite to the light exit surface 412 . . For example, the light-emitting elements 71 and 81 of the backlight modules 7 and 8 may be a Light-Emitting Diode (LED) or a Cold Cathode Fluorescent Lamp (CCFL). Furthermore, although not depicted in FIG. 8 , those skilled in the art will be able to understand that an optical film structure such as a diffusion sheet or a enamel enhancement sheet can be further disposed above the light guide plate 4 to further improve light emission brightness and light uniformity. .
請參照表一及表二,以說明本發明之導光板應用於背光模組之光學效益。Please refer to Table 1 and Table 2 to illustrate the optical benefits of the light guide plate of the present invention applied to a backlight module.
表一為本發明實施例之導光板與市售光學膜片應用於直下式背光模組之光學特性比較表。由表一可知,本發明之導光板應用於直下式背光模組,其增亮效益較市售產品1高出14%,較市售產品2高出23%;其出光效率較市售產品1高出59.1%,較市售產品2高出8.3%。此外,本發明之導光板應用於直下式背光模組時之視角遞減變化較為平順,而可提供較佳的視覺效果。Table 1 is a comparison table of optical characteristics of a light guide plate and a commercially available optical film applied to a direct type backlight module according to an embodiment of the present invention. As can be seen from Table 1, the light guide plate of the present invention is applied to a direct type backlight module, and the brightness enhancement benefit is 14% higher than that of the commercially available product 1 and 23% higher than the commercially available product 2; the light extraction efficiency is higher than that of the commercially available product 1 It is 59.1% higher, which is 8.3% higher than that of the commercially available product 2. In addition, when the light guide plate of the present invention is applied to a direct type backlight module, the change in viewing angle is relatively smooth, and a better visual effect can be provided.
表二為本發明實施例之導光板與市售光學膜片應用於側光式背光模組之光學特性比較表。由表二可知,本發明之導光板應用於側光式背光模組,其增亮效益較市售產品1僅低5.8%,而出光效率高出52.29%;相較於市售產品2,其增亮效益較市售產品2高出26.4%,出光效率高出4.49%。此外,本發明之導光板應用於側光式背光模組時之視角遞減變化較為平順,而可提供較 佳的視覺效果。Table 2 is a comparison table of optical characteristics of a light guide plate and a commercially available optical film used in an edge-light type backlight module according to an embodiment of the present invention. It can be seen from Table 2 that the light guide plate of the present invention is applied to the edge-light type backlight module, and the brightness enhancement effect is only 5.8% lower than that of the commercially available product 1, and the light extraction efficiency is 52.29% higher; compared with the commercially available product 2, The brightening benefit is 26.4% higher than that of the commercially available product 2, and the light extraction efficiency is 4.49% higher. In addition, when the light guide plate of the present invention is applied to the edge-light type backlight module, the change of the viewing angle is relatively smooth, and the comparison can be provided. Good visual effects.
藉由前述各個實施例之設計,導光結構的弧形出光面可提供擴光效果並避免疊紋現象產生,且於弧形出光面上設置的長形溝槽,可使光線被溝槽的內壁反射或折射而同時獲得集光的效果。此外,依本發明實施例之設計可獲得較平順的視角遞減變化,因此視覺效果較佳。With the design of the foregoing various embodiments, the curved light-emitting surface of the light guiding structure can provide a light-expanding effect and avoid the occurrence of moiré, and the elongated groove provided on the curved light-emitting surface can make the light be grooved. The inner wall reflects or refracts while obtaining the effect of collecting light. In addition, the design according to the embodiment of the present invention can obtain a smoother change in viewing angle, and thus the visual effect is better.
以上所述僅為舉例性,而非為限制性者。任何熟悉該項技術者均可依據上述本發明之實施例進行等效之修改,而不脫離其精神與範疇。故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。The above is intended to be illustrative only and not limiting. Equivalent modifications may be made to the embodiments of the invention described above without departing from the spirit and scope of the invention. Therefore, any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.
1、2、3‧‧‧導光結構1, 2, 3‧ ‧ light guiding structure
11‧‧‧入光面11‧‧‧Into the glossy surface
12‧‧‧出光面12‧‧‧Glossy
13、13’‧‧‧溝槽13, 13’‧‧‧ trench
14‧‧‧側壁14‧‧‧ side wall
4‧‧‧導光板4‧‧‧Light guide plate
41‧‧‧透光基板41‧‧‧Transparent substrate
411、411’‧‧‧入光面411, 411'‧‧‧ into the glossy surface
412‧‧‧第一出光面412‧‧‧The first glazing
42‧‧‧第一導光結構42‧‧‧First light guiding structure
421‧‧‧第二入光面421‧‧‧Second entrance
422‧‧‧第二出光面422‧‧‧second glazing
423‧‧‧溝槽423‧‧‧ trench
43、44、45、46‧‧‧第二導光結構43, 44, 45, 46‧‧‧ second light guiding structure
5‧‧‧光學基材5‧‧‧Optical substrate
7、8‧‧‧背光模組7, 8‧‧‧ backlight module
71、81‧‧‧發光元件71, 81‧‧‧Lighting elements
72‧‧‧光學膜片72‧‧‧Optical diaphragm
82‧‧‧反射層82‧‧‧reflective layer
L1、L2、L3‧‧‧光線路徑L1, L2, L3‧‧‧ ray path
θ‧‧‧頂角Θ‧‧‧ top angle
圖1a為一立體圖,顯示本發明一實施例之導光結構。Fig. 1a is a perspective view showing a light guiding structure according to an embodiment of the present invention.
圖1b為一側視圖,顯示本發明一實施例之導光結構。Figure 1b is a side elevational view of a light directing structure in accordance with one embodiment of the present invention.
圖2為一立體圖,顯示本發明另一實施例之導光結構。2 is a perspective view showing a light guiding structure according to another embodiment of the present invention.
圖3為一立體圖,顯示本發明另一實施例之導光結構。Fig. 3 is a perspective view showing a light guiding structure according to another embodiment of the present invention.
圖4為一側視圖,顯示本發明一實施例之導光板。Fig. 4 is a side elevational view showing a light guide plate according to an embodiment of the present invention.
圖5a至5d為一示意圖,顯示導光結構於導光板上之排列方式例。5a to 5d are schematic views showing an arrangement of light guiding structures on a light guiding plate.
圖6a為一立體圖,顯示本發明另一實施例之導光板。Figure 6a is a perspective view showing a light guide plate according to another embodiment of the present invention.
圖6b為一側視圖,顯示本發明另一實施例之導光板。Figure 6b is a side elevational view of a light guide plate in accordance with another embodiment of the present invention.
圖7為一側視圖,顯示本發明一實施例之背光模組。FIG. 7 is a side view showing a backlight module according to an embodiment of the present invention.
圖8為一側視圖,顯示本發明另一實施例之背光模組。FIG. 8 is a side view showing a backlight module according to another embodiment of the present invention.
1‧‧‧導光結構1‧‧‧Light guiding structure
11‧‧‧入光面11‧‧‧Into the glossy surface
12‧‧‧出光面12‧‧‧Glossy
13‧‧‧溝槽13‧‧‧ trench
L1、L2、L3‧‧‧光線路徑L1, L2, L3‧‧‧ ray path
θ‧‧‧頂角Θ‧‧‧ top angle
Claims (42)
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Citations (4)
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TW200643535A (en) * | 2005-06-07 | 2006-12-16 | K Bridge Electronics Co Ltd | Light source uniformization structure of backlight module |
TW200739196A (en) * | 2006-04-13 | 2007-10-16 | Radiant Opto Electronics Corp | Optical waveguide structure of the back light plate for back light module |
US7370999B2 (en) * | 2004-10-14 | 2008-05-13 | Tsinghua University | Light guide plate and surface light source using same |
TWM333583U (en) * | 2007-10-15 | 2008-06-01 | Eternal Chemical Co Ltd | Light field adjustment assembly |
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US7370999B2 (en) * | 2004-10-14 | 2008-05-13 | Tsinghua University | Light guide plate and surface light source using same |
TW200643535A (en) * | 2005-06-07 | 2006-12-16 | K Bridge Electronics Co Ltd | Light source uniformization structure of backlight module |
TW200739196A (en) * | 2006-04-13 | 2007-10-16 | Radiant Opto Electronics Corp | Optical waveguide structure of the back light plate for back light module |
TWM333583U (en) * | 2007-10-15 | 2008-06-01 | Eternal Chemical Co Ltd | Light field adjustment assembly |
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