本申请是基于申请号为201310369663.6，申请日为2013年08月20日，申请人为瑞仪光电股份有限公司，题为具多向性结构的导光板的发明提出的分案申请。This application is based on the application number 201310369663.6, the application date is August 20, 2013, and the applicant is Ruiyi Optoelectronics Co., Ltd., which is a divisional application for the invention titled light guide plate with multi-directional structure.
技术领域technical field
本发明涉及一种导光组件，特别是涉及一种导光板及背光模块。The invention relates to a light guide assembly, in particular to a light guide plate and a backlight module.
背景技术Background technique
导光板具有入光面、出光面以及反射面。光源所提供的光线由导光板的入光面进入导光板中，由导光板的出光面射出。为了使得经过导光板内部的光源能够更均匀地混合，通常会在导光板的出光面或反射面设置微结构，例如点状微结构或条状微结构。The light guide plate has a light incident surface, a light exit surface and a reflection surface. The light provided by the light source enters the light guide plate from the light incident surface of the light guide plate, and exits from the light exit surface of the light guide plate. In order to make the light sources passing through the inside of the light guide plate more uniformly mixed, microstructures, such as dot microstructures or strip microstructures, are usually provided on the light emitting surface or reflection surface of the light guide plate.
然而，一般设有点状微结构的表面的结构较粗糙，光线在接触结构表面后会形成漫射，使得光线在折射出导光板后的方向不一致且光能量不集中，进而导致辉度不佳。However, generally, the surface with dot-like microstructures has a rough structure, and the light will diffuse after contacting the surface of the structure, so that the direction of the light after refracting out of the light guide plate is inconsistent and the light energy is not concentrated, resulting in poor luminance.
另一种技术则是通过分别在导光板出光面及反射面设置不同延伸方向的条状微结构。此种设有条状微结构的导光板所产生的辉度效果较设有点状结构的导光板佳，但却容易产生亮暗纹而影响导光板的光学外观。Another technique is to arrange strip microstructures with different extending directions on the light emitting surface and the reflecting surface of the light guide plate respectively. The luminance effect produced by the light guide plate with strip microstructure is better than that of the light guide plate with dot structure, but it is easy to produce bright and dark lines and affect the optical appearance of the light guide plate.
因此，亟需一种导光板，以解决上述问题。Therefore, there is an urgent need for a light guide plate to solve the above problems.
发明内容Contents of the invention
因此，本发明目的之一是提供一种具多向性结构的导光板，通过交叉设置在导光板的同一面上的第一微结构及第二微结构来产生同时控制导光板的出光角度及光学趋势的功能，并可达到混光及出光更均匀的效果。再者，通过对第一微结构及第二微结构表面的粗糙化或雾化的处理，可提升导光板的整体出光外观的均匀性。此外，前述第一微结构及第二微结构皆可利用现有的微结构工艺及设备来制作，不需要额外购置新的工艺设备，因此不会造成工艺成本的负担。Therefore, one of the objects of the present invention is to provide a light guide plate with a multi-directional structure, which generates and simultaneously controls the light exit angle and The function of optical trend can achieve the effect of light mixing and more uniform light output. Furthermore, by roughening or atomizing the surfaces of the first microstructure and the second microstructure, the uniformity of the overall light emitting appearance of the light guide plate can be improved. In addition, both the aforementioned first microstructure and the second microstructure can be manufactured using existing microstructure techniques and equipment, without additional purchase of new process equipment, and thus will not cause a burden on process costs.
根据本发明上述目的，提出一种具多向性结构的导光板，其包括主体、数个第一微结构及数个第二微结构。主体包括入光面、出光面及反射面。反射面相对于出光面。入光面连接出光面与反射面。第一微结构设于出光面或反射面上，且第一微结构沿着第一延伸方向排列。第二微结构设于出光面或反射面上，且第二微结构沿着第二延伸方向排列。其中，第二微结构与第一微结构位于同一平面上且彼此交叉设置。而且，每一个第二微结构呈单一条状形态，且每一个第二微结构的宽度从靠近入光面的一端到远离入光面的另一端逐渐缩小。According to the above object of the present invention, a light guide plate with multi-directional structure is proposed, which includes a main body, several first microstructures and several second microstructures. The main body includes a light incident surface, a light exit surface and a reflection surface. The reflective surface is opposite to the light-emitting surface. The light incident surface connects the light emitting surface and the reflecting surface. The first microstructures are arranged on the light emitting surface or the reflecting surface, and the first microstructures are arranged along the first extending direction. The second microstructure is arranged on the light emitting surface or the reflecting surface, and the second microstructure is arranged along the second extending direction. Wherein, the second microstructure and the first microstructure are located on the same plane and intersect each other. Moreover, each second microstructure is in the shape of a single strip, and the width of each second microstructure gradually decreases from one end close to the light-incident surface to the other end away from the light-incident surface.
根据本发明的一个实施例，上述第二微结构截断每一个第一微结构。According to an embodiment of the present invention, the above-mentioned second microstructures intercept each of the first microstructures.
根据本发明另一实施例，上述第一延伸方向与第二延伸方向垂直。According to another embodiment of the present invention, the above-mentioned first extending direction is perpendicular to the second extending direction.
根据本发明又一实施例，上述每一个第一微结构或每一个第二微结构为凸状部或凹陷部。According to yet another embodiment of the present invention, each of the above-mentioned first microstructures or each of the second microstructures is a convex portion or a concave portion.
根据本发明再一实施例，当每一个第二微结构为凸状部时，凸状部的高度从靠近入光面的一端到远离入光面的另一端逐渐缩小。当每一个第二微结构为凹陷部时，凹陷部的深度从靠近入光面的一端到远离入光面的另一端逐渐缩小。According to yet another embodiment of the present invention, when each second microstructure is a convex portion, the height of the convex portion decreases gradually from one end close to the light incident surface to the other end far away from the light incident surface. When each second microstructure is a depression, the depth of the depression gradually decreases from one end close to the light incident surface to the other end away from the light incident surface.
根据本发明再一实施例，上述每一个第一微结构的剖面轮廓为V形或倒V形，且每一个第一微结构的二表面与出光面或反射面之间形成第一夹角及第二夹角。According to yet another embodiment of the present invention, the cross-sectional profile of each of the first microstructures is V-shaped or inverted V-shaped, and a first included angle and second angle.
根据本发明再一实施例，上述每一个第二微结构的剖面轮廓为V形、倒V形、圆弧形或梯形According to yet another embodiment of the present invention, the cross-sectional profile of each of the above-mentioned second microstructures is V-shaped, inverted V-shaped, arc-shaped or trapezoidal
根据本发明再一实施例，上述第一微结构中的任相邻二者的间距为相同，且第二微结构中的任相邻二者的间距为相同。According to yet another embodiment of the present invention, the pitches between any two adjacent ones of the first microstructures are the same, and the pitches between any two adjacent ones of the second microstructures are the same.
根据本发明再一实施例，上述第一微结构中的任相邻二者的间距为相同，且第二微结构中的任相邻二者的间距为不相同。According to yet another embodiment of the present invention, the pitches between any adjacent two of the first microstructures are the same, and the pitches between any adjacent two of the second microstructures are different.
根据本发明再一实施例，上述第一微结构中的任相邻二者的间距为不相同，且第二微结构中的任相邻二者的间距为相同。According to yet another embodiment of the present invention, the pitches between any adjacent two of the first microstructures are different, and the pitches between any adjacent two of the second microstructures are the same.
根据本发明再一实施例，上述第一微结构中的任相邻二者的间距为不相同，且第二微结构中的任相邻二者的间距为不相同。According to yet another embodiment of the present invention, the pitches between any adjacent two of the first microstructures are different, and the pitches between any adjacent two of the second microstructures are different.
根据本发明再一实施例，上述至少一部分的第一微结构的表面为雾面、纹面或粗糙面。According to yet another embodiment of the present invention, the surface of at least a part of the first microstructure is a matte surface, a textured surface or a rough surface.
根据本发明再一实施例，上述至少一部分的第二微结构的表面为雾面、纹面或粗糙面。According to yet another embodiment of the present invention, the surface of at least a part of the second microstructure is a matte surface, a textured surface or a rough surface.
附图说明Description of drawings
为让本发明上述和其他目的、特征、优点与实施例能更明显易懂，附图的说明如下：In order to make the above and other purposes, features, advantages and embodiments of the present invention more obvious and understandable, the accompanying drawings are described as follows:
图1是示出根据本发明第一实施方式的一种具多向性结构的导光板的结构示意图。FIG. 1 is a schematic structural view showing a light guide plate with an omnidirectional structure according to a first embodiment of the present invention.
图2是示出根据本发明第一实施方式的一种第一微结构的局部剖示图。FIG. 2 is a partial cross-sectional view showing a first microstructure according to the first embodiment of the present invention.
图3是示出根据本发明第一实施方式的另一种第一微结构的局部剖示图。FIG. 3 is a partial cross-sectional view showing another first microstructure according to the first embodiment of the present invention.
图4是示出根据本发明第一实施方式的一种第二微结构的局部剖示图。FIG. 4 is a partial cross-sectional view showing a second microstructure according to the first embodiment of the present invention.
图5是示出根据本发明第一实施方式的另一种第二微结构的局部剖示图。FIG. 5 is a partial cross-sectional view illustrating another second microstructure according to the first embodiment of the present invention.
图6是示出根据本发明第二实施方式的一种具多向性结构的导光板的结构示意图。FIG. 6 is a schematic structural view showing a light guide plate with an omnidirectional structure according to a second embodiment of the present invention.
图7是示出根据本发明第三实施方式与比较例1、比较例2及比较例3的光场分布曲线图。FIG. 7 is a graph showing light field distributions according to the third embodiment of the present invention and Comparative Example 1, Comparative Example 2 and Comparative Example 3. FIG.
图8是示出根据本发明第三实施方式与比较4及比较例5的光场分布曲线图。FIG. 8 is a graph showing light field distributions according to the third embodiment of the present invention and comparisons 4 and 5. FIG.
具体实施方式detailed description
参照图1，其是示出了根据本发明第一实施方式的一种具多向性结构的导光板的结构示意图。本实施方式的导光板100可应用于背光模块(图未示)上。导光板100可包括主体120以及复数个微结构，其中此复数个微结构可例如包括复数个第一微结构140以及复数个第二微结构160。通过设置在主体120上的第一微结构140及第二微结构160，可以同时改变并调整光线进入导光板100后射出的出光角度及光学趋势。Referring to FIG. 1 , it is a schematic structural view showing a light guide plate with an omnidirectional structure according to a first embodiment of the present invention. The light guide plate 100 of this embodiment can be applied to a backlight module (not shown). The light guide plate 100 may include a main body 120 and a plurality of microstructures, wherein the plurality of microstructures may include, for example, a plurality of first microstructures 140 and a plurality of second microstructures 160 . Through the first microstructure 140 and the second microstructure 160 disposed on the main body 120 , it is possible to simultaneously change and adjust the exit angle and optical trend of the light emitted from the light guide plate 100 .
在导光板100中，主体120可为透光板或其他等效的透光件。主体120主要包括入光面122以及至少一个主表面，其中此至少一个主表面可例如包括出光面124及反射面126，主表面具有一组成对且互相平行的第一端缘S1与第二端缘S2。在本实施例中，第一端缘S1为主表面与入光面122连接的边缘，第二端缘S2为主表面远离入光面122的边缘。反射面126与出光面124分别位于主体120的相对两侧。此外，入光面122连接出光面124与反射面126，亦即入光面122的相对二边分别与出光面124的一边和反射面126的一边相接。其中，光源190设置在入光面122旁，且光源190所产生的光线可由入光面122进入导光板100。第一微结构140与第二微结构160位于同一平面上。也就是说，第一微结构140与第二微结构160同时设置在出光面124上或反射面126上。在另一些实施例中，可在出光面124及反射面126上均同时设置第一微结构140与第二微结构160。而且，在同一面上的第一微结构140与第二微结构160呈彼此交叉设置。在一个实施例中，第二微结构160可截断每个第一微结构140。In the light guide plate 100, the main body 120 can be a light-transmitting plate or other equivalent light-transmitting components. The main body 120 mainly includes a light incident surface 122 and at least one main surface, wherein the at least one main surface may for example include a light output surface 124 and a reflective surface 126, and the main surface has a pair of first end edges S1 and second ends parallel to each other. Edge S2. In this embodiment, the first end edge S1 is the edge where the main surface is connected to the light incident surface 122 , and the second end edge S2 is the edge where the main surface is away from the light incident surface 122 . The reflective surface 126 and the light emitting surface 124 are respectively located on opposite sides of the main body 120 . In addition, the light incident surface 122 is connected to the light exit surface 124 and the reflective surface 126 , that is, two opposite sides of the light incident surface 122 are in contact with one side of the light exit surface 124 and one side of the reflective surface 126 respectively. Wherein, the light source 190 is disposed beside the light incident surface 122 , and the light generated by the light source 190 can enter the light guide plate 100 through the light incident surface 122 . The first microstructure 140 and the second microstructure 160 are located on the same plane. That is to say, the first microstructure 140 and the second microstructure 160 are disposed on the light emitting surface 124 or the reflecting surface 126 at the same time. In some other embodiments, the first microstructure 140 and the second microstructure 160 can be disposed on both the light emitting surface 124 and the reflecting surface 126 . Moreover, the first microstructures 140 and the second microstructures 160 on the same surface are arranged to cross each other. In one embodiment, the second microstructures 160 may truncate each of the first microstructures 140 .
如图1所示，所有第一微结构140沿着第一延伸方向D1排列在出光面124上并且从第一端缘S1排列至第二端缘S2。另一方面，所有第二微结构160沿着第二延伸方向D2排列在出光面124上并且从第一端缘S1延伸至第二端缘S2。其中，每一个第二微结构160可呈单一条状型态。而且，每一个第二微结构160的宽度从靠近入光面122的一端往远离入光面122的方向逐渐缩小。由于同一面上的第一微结构140与第二微结构160呈彼此交叉设置，因此第二延伸方向D2不同于第一延伸方向D1。也就是说，如图1所示，第一微结构140所在区域即为第一区域A1，第二微结构160的所在区域即为第二区域A2，且第二区域A2相邻于第一区域A1。而且，由于第二微结构160与第一微结构140交叉设置，且每一个第二微结构160的宽度从靠近入光面122的一端往远离入光面122的方向逐渐缩小，因此，由图1可知，每一个第一区域A1的宽度从靠近入光面122的一端到远离入光面122的另一端逐渐增大，而每一个第二区域A2的宽度从靠近入光面122的一端到远离入光面122的另一端逐渐缩小。在一个实施例中，第一延伸方向D1与第二延伸方向D2垂直，但不以此为限。具体而言，图1以第一微结构140及第二微结构160同时设于出光面124上的实施例作为说明，并非用以限制本发明。第一微结构140及第二微结构160亦可同时设置在反射面126上。As shown in FIG. 1 , all the first microstructures 140 are arranged on the light emitting surface 124 along the first extending direction D1 and are arranged from the first end edge S1 to the second end edge S2 . On the other hand, all the second microstructures 160 are arranged on the light emitting surface 124 along the second extending direction D2 and extend from the first edge S1 to the second edge S2 . Wherein, each of the second microstructures 160 may be in the form of a single strip. Moreover, the width of each second microstructure 160 gradually decreases from one end close to the light-incident surface 122 to a direction away from the light-incident surface 122 . Since the first microstructures 140 and the second microstructures 160 on the same surface are disposed across each other, the second extending direction D2 is different from the first extending direction D1. That is to say, as shown in FIG. 1, the area where the first microstructure 140 is located is the first area A1, the area where the second microstructure 160 is located is the second area A2, and the second area A2 is adjacent to the first area. A1. Moreover, since the second microstructures 160 are intersected with the first microstructures 140, and the width of each second microstructure 160 gradually decreases from the end close to the light incident surface 122 to the direction away from the light incident surface 122, therefore, as shown in FIG. It can be seen that the width of each first area A1 gradually increases from one end close to the light incident surface 122 to the other end away from the light incident surface 122, and the width of each second area A2 increases from one end close to the light incident surface 122 to the other end away from the light incident surface 122. The other end away from the light incident surface 122 is gradually narrowed. In one embodiment, the first extending direction D1 is perpendicular to the second extending direction D2, but not limited thereto. Specifically, FIG. 1 illustrates an embodiment in which the first microstructure 140 and the second microstructure 160 are simultaneously disposed on the light-emitting surface 124 , which is not intended to limit the present invention. The first microstructure 140 and the second microstructure 160 can also be disposed on the reflective surface 126 at the same time.
一并参阅图1及图2，图2是示出了根据本发明第一实施方式的一种第一微结构的局部剖示图。在一个实施例中，每个第一微结构140可为凸出于出光面124的凸状部，且每个第一微结构140的剖面轮廓为倒V形。而且，每一个第一微结构140具有与出光面124连接的两个表面140a及140b。这两个表面140a及140b与出光面124之间分别形成第一夹角α及第二夹角β。其中，第一夹角α及第二夹角β的角度可根据进入导光板100的光线的角度不同而设计，藉此可改变光线进入导光板100后的出光角度，以提升整体导光板100的光通量及辉度值。同时，每一个第一微结构140的形状也会随着第一夹角d及第二夹角β的角度变化而改变，且每一个第一微结构140的顶端与出光面124的垂直高度也会有所改变。在一个实施例中，反射面126上可另外设有V形结构180或其他具有相似功能的微结构。Referring to FIG. 1 and FIG. 2 together, FIG. 2 is a partial cross-sectional view showing a first microstructure according to the first embodiment of the present invention. In one embodiment, each first microstructure 140 may be a convex portion protruding from the light-emitting surface 124 , and a cross-sectional profile of each first microstructure 140 is an inverted V shape. Moreover, each first microstructure 140 has two surfaces 140 a and 140 b connected to the light-emitting surface 124 . A first angle α and a second angle β are respectively formed between the two surfaces 140 a and 140 b and the light-emitting surface 124 . Wherein, the angles of the first included angle α and the second included angle β can be designed according to the different angles of the light entering the light guide plate 100, thereby changing the light exit angle after the light enters the light guide plate 100, so as to improve the overall light guide plate 100. Luminous flux and brightness value. At the same time, the shape of each first microstructure 140 will also change with the angle change of the first included angle d and the second included angle β, and the vertical height between the top of each first microstructure 140 and the light-emitting surface 124 will also change. subject to change. In one embodiment, V-shaped structures 180 or other microstructures with similar functions may be additionally provided on the reflective surface 126 .
同时参照图2及图3，图3是示出根据本发明第一实施方式的另一种第一微结构的局部剖示图。在图2的实施例中，第一微结构140以连续式的方式排列，且这些第一微结构140彼此直接相连接。在图3的实施例中，第一微结构140以非连续式的方式排列，且每一个第一微结构140不互相连接。具体而言，第一微结构140可以连续、不连续或部分连续及部分不连续的方式排列于出光面124或反射面126上。而且，任相邻两个第一微结构140之间的间距P可为相同或不相同。藉由调整相邻两个第一微结构140之间的间距P来调整第一微结构排列的疏密程度，亦可改变导光板100的辉度及光通量，进而提高导光板100的出光均齐度。Referring to FIG. 2 and FIG. 3 at the same time, FIG. 3 is a partial cross-sectional view showing another first microstructure according to the first embodiment of the present invention. In the embodiment of FIG. 2 , the first microstructures 140 are arranged in a continuous manner, and these first microstructures 140 are directly connected to each other. In the embodiment of FIG. 3 , the first microstructures 140 are arranged discontinuously, and each first microstructure 140 is not connected to each other. Specifically, the first microstructure 140 can be arranged on the light emitting surface 124 or the reflecting surface 126 in a continuous, discontinuous, or partially continuous and partially discontinuous manner. Moreover, the pitch P between any two adjacent first microstructures 140 may be the same or different. By adjusting the spacing P between two adjacent first microstructures 140 to adjust the density of the arrangement of the first microstructures, the luminance and luminous flux of the light guide plate 100 can also be changed, thereby improving the uniformity of light output from the light guide plate 100 Spend.
一并参照图1及图4，图4是示出根据本发明第一实施方式的一种第二微结构的局部剖示图。在本实施例中，第二微结构160可为凹入出光面124的凹陷部，且第二微结构160的剖面轮廓为圆弧形。而且，每一个第二微结构160位于出光面124上，沿着第一延伸方向D1延伸截断全部的第一微结构140。在一个实施例中，第二微结构160的深度D由靠近入光面122的一端向远离入光面122的方向逐渐缩小。在一个例子中，可通过调整第二微结构160的深度D及宽度W，来改变被截断后所剩余的第一微结构140之间的距离以及被截断后所剩余的第一微结构140的长度。因此，藉由改变第二微结构160的深度D及宽度W，可以改变导光板100的光学趋势。Referring to FIG. 1 and FIG. 4 together, FIG. 4 is a partial cross-sectional view illustrating a second microstructure according to the first embodiment of the present invention. In this embodiment, the second microstructure 160 can be a concave portion that is recessed into the light-emitting surface 124 , and the cross-sectional profile of the second microstructure 160 is arc-shaped. Moreover, each second microstructure 160 is located on the light emitting surface 124 and extends along the first extending direction D1 to intercept all the first microstructures 140 . In one embodiment, the depth D of the second microstructure 160 gradually decreases from an end close to the light incident surface 122 to a direction away from the light incident surface 122 . In one example, by adjusting the depth D and width W of the second microstructure 160, the distance between the remaining first microstructures 140 after being truncated and the distance between the remaining first microstructures 140 after being truncated can be changed. length. Therefore, by changing the depth D and width W of the second microstructure 160 , the optical trend of the light guide plate 100 can be changed.
参照图5，其是示出根据本发明第一实施方式的另一种第二微结构的局部剖示图。在本实施例中，第二微结构160的剖面轮廓为梯形。在一个例子中，第二微结构160的剖面轮廓可为V形。在一些例子中，第二微结构160的剖面轮廓可例如由R刀、V刀、平刀或多晶刀加工所形成的轮廓。不同的剖面轮廓形状可使导光板100产生不同的集光效果。Referring to FIG. 5 , it is a partial cross-sectional view showing another second microstructure according to the first embodiment of the present invention. In this embodiment, the cross-sectional profile of the second microstructure 160 is trapezoidal. In one example, the cross-sectional profile of the second microstructure 160 may be V-shaped. In some examples, the cross-sectional profile of the second microstructure 160 may be, for example, a profile formed by R knife, V knife, flat knife or polycrystalline knife. Different cross-sectional contour shapes can make the light guide plate 100 produce different light-collecting effects.
具体而言，图4及图5所示的第二微结构160彼此并无互相连接，但在其他实施例中，第二微结构160亦可彼此互相连接，而呈连续的方式排列。而且，任相邻两个第二微结构160之间的间距P’可为相同或不相同。藉由调整相邻两个第二微结构160之间的间距P’来调整第二微结构160排列的疏密程度，进而可提升导光板100的导光功能。Specifically, the second microstructures 160 shown in FIG. 4 and FIG. 5 are not connected to each other, but in other embodiments, the second microstructures 160 may also be connected to each other and arranged in a continuous manner. Moreover, the pitch P' between any two adjacent second microstructures 160 may be the same or different. By adjusting the pitch P' between two adjacent second microstructures 160, the density of the arrangement of the second microstructures 160 can be adjusted, thereby improving the light guiding function of the light guide plate 100.
参照图6，其是示出根据本发明第二实施方式的一种具多向性结构的导光板的结构示意图。本实施方式的导光板200同样可包括主体220以及复数个微结构，其中此复数个微结构可例如包括复数个第一微结构240以及复数个第二微结构260。主体220包括入光面222以及至少一个主表面，其中此至少一个主表面可例如包括出光面224及反射面226。主表面具有一组成对且互相平行的第一端缘S1与第二端缘S2。在本实施例中，第一端缘S1为主表面与入光面222连接的边缘，第二端缘S2为主表面远离入光面222的边缘。光源290设置在入光面222旁，且光源290所产生的光线可由入光面222进入导光板200。其中，第一微结构240及第二微结构260皆为凸出于出光面224的凸状部。第一微结构240及第二微结构260的剖面轮廓分别为倒V形及圆弧形。其中，所有的第一微结构240沿着第一延伸方向D1排列在出光面224上，并且从第一端缘S1排列至第二端缘S2。所有的第二微结构260沿着第二延伸方向D2排列在出光面224上，且第二微结构260从第一端缘S1延伸至第二端缘S2。其中，第二微结构260与每一个第一微结构240交叉而截断第一微结构240。同样地，如图6所示，第一微结构240所在区域即为第一区域A1，第二微结构260的所在区域即为第二区域A2，且第二区域A2相邻于第一区域A1。而且，由于第二微结构260与第一微结构240交叉设置，且每一个第二微结构260的宽度从靠近入光面222的一端往远离入光面222的方向逐渐缩小，因此，由图3可知，每一个第一区域A1的宽度从靠近入光面222的一端到远离入光面222的另一端逐渐增大，而每一个第二区域A2的宽度从靠近入光面222的一端到远离入光面222的另一端逐渐缩小。其中，每一个第二微结构260同样可呈单一条状型态。而且，每一个第二微结构260的宽度W从靠近入光面222的一端往远离入光面222的方向逐渐缩小。在另一实施例中，第二微结构260的高度H是由靠近入光面222的一端向远离入光面222的方向逐渐缩小。Referring to FIG. 6 , it is a schematic structural diagram showing a light guide plate with an omnidirectional structure according to a second embodiment of the present invention. The light guide plate 200 of this embodiment may also include a main body 220 and a plurality of microstructures, wherein the plurality of microstructures may include, for example, a plurality of first microstructures 240 and a plurality of second microstructures 260 . The main body 220 includes a light incident surface 222 and at least one main surface, wherein the at least one main surface may, for example, include a light output surface 224 and a reflective surface 226 . The main surface has a pair of first edge S1 and second edge S2 parallel to each other. In this embodiment, the first end edge S1 is the edge where the main surface is connected to the light incident surface 222 , and the second end edge S2 is the edge where the main surface is away from the light incident surface 222 . The light source 290 is disposed beside the light incident surface 222 , and the light generated by the light source 290 can enter the light guide plate 200 through the light incident surface 222 . Wherein, both the first microstructure 240 and the second microstructure 260 are convex portions protruding from the light-emitting surface 224 . The cross-sectional profiles of the first microstructure 240 and the second microstructure 260 are inverted V-shaped and arc-shaped respectively. Wherein, all the first microstructures 240 are arranged on the light emitting surface 224 along the first extension direction D1, and are arranged from the first end edge S1 to the second end edge S2. All the second microstructures 260 are arranged on the light emitting surface 224 along the second extension direction D2, and the second microstructures 260 extend from the first edge S1 to the second edge S2. Wherein, the second microstructure 260 crosses each of the first microstructures 240 to intercept the first microstructures 240 . Similarly, as shown in FIG. 6, the area where the first microstructure 240 is located is the first area A1, the area where the second microstructure 260 is located is the second area A2, and the second area A2 is adjacent to the first area A1 . Moreover, since the second microstructures 260 are intersected with the first microstructures 240, and the width of each second microstructure 260 is gradually reduced from the end close to the light incident surface 222 to the direction away from the light incident surface 222, therefore, as shown in FIG. It can be seen that the width of each first area A1 gradually increases from one end close to the light incident surface 222 to the other end away from the light incident surface 222, and the width of each second area A2 increases from one end close to the light incident surface 222 to The other end away from the light incident surface 222 is gradually narrowed. Wherein, each of the second microstructures 260 can also be in the form of a single strip. Moreover, the width W of each second microstructure 260 gradually decreases from an end close to the light-incident surface 222 to a direction away from the light-incident surface 222 . In another embodiment, the height H of the second microstructure 260 gradually decreases from an end close to the light incident surface 222 to a direction away from the light incident surface 222 .
在一个实施例中，同样可藉由调整第二微结构260的高度H及宽度W，来改变每一个被截断后所剩余的第一微结构240之间的距离以及被截断所剩余的第一微结构240的长度。因此，藉由改变第二微结构260的高度H及宽度W，可以改变导光板200的光学趋势。在一个实施例中，反射面226上可另外设有V形结构280或其他具有相似功能的微结构。In one embodiment, by adjusting the height H and width W of the second microstructure 260, the distance between each remaining first microstructure 240 after truncation and the remaining first microstructure 240 after being truncated can be changed. The length of the microstructure 240 . Therefore, by changing the height H and width W of the second microstructure 260, the optical trend of the light guide plate 200 can be changed. In one embodiment, V-shaped structures 280 or other microstructures with similar functions may be additionally provided on the reflective surface 226 .
以下兹以第三实施方式来与已知的导光板作比较。参照图7，其是示出根据本发明第三实施方式与比较例1、比较例2及比较例3的光场分布曲线图。其中，第三实施方式在导光板的出光面设置V形结构且反射面设置第一微结构及第二微结构，比较例1为一般单面设有点状结构的导光板，比较例2为出光面设置V形结构且反射面设置点状结构的导光板，比较例3为分别在出光面及反射面设置不同延伸方向的V形结构的导光板。由图7可知，图中最粗的曲线700根据第三实施方式的导光板的仿真实验数据所获得的曲线，相较于其他根据比较例1、2与3的仿真实验数据所获得曲线720、740及760平滑。这表示，通过交叉设置的第一微结构及第二微结构可有效控制光场分布角度。比较例1-3的曲线720、740及760凹凸不平的地方代表光能量损失的噪声，这样表示对于光场分布角度的控制效果较差。Hereinafter, the third embodiment is compared with the known light guide plate. Referring to FIG. 7 , it is a graph showing light field distribution curves according to the third embodiment of the present invention and Comparative Example 1, Comparative Example 2 and Comparative Example 3. Referring to FIG. Among them, in the third embodiment, a V-shaped structure is provided on the light-emitting surface of the light guide plate, and the first microstructure and the second microstructure are provided on the reflective surface. Comparative Example 1 is a light guide plate generally provided with a dot-like structure on one side, and Comparative Example 2 is a light-emitting surface. A light guide plate with a V-shaped structure on the surface and a point structure on the reflective surface. Comparative Example 3 is a light guide plate with a V-shaped structure with different extending directions on the light-emitting surface and the reflective surface. It can be seen from FIG. 7 that the thickest curve 700 in the figure is obtained according to the simulation experiment data of the light guide plate of the third embodiment, compared with other curves 720, 720, 740 and 760 smooth. This means that the distribution angle of the light field can be effectively controlled by the cross-arranged first microstructure and the second microstructure. The uneven parts of the curves 720 , 740 and 760 in Comparative Example 1-3 represent the noise of the light energy loss, which means that the control effect on the light field distribution angle is poor.
参照下表1，其是将前述第三实施方式、比较例1、比较例2及比较例3的导光板分别搭配三片光学膜片与四片光学膜片后，所产生的辉度比较表。由表1可知，比较例3在出光面及反射面设置不同延伸方向的V形结构的导光板设计对于提升辉度是有帮助的。然而，比较例3的导光板结构设计会导致导光板与光学膜片吸附及亮暗纹的问题。相反地，第三实施方式的导光板因为在反射面同时具有第一微结构及第二微结构，除了可克服上述的导光板与光学膜片吸附及亮暗纹问题外，更可产生较佳的辉度效果。Refer to Table 1 below, which is a comparison table of luminance generated by combining the light guide plates of the aforementioned third embodiment, comparative example 1, comparative example 2 and comparative example 3 with three optical films and four optical films respectively . It can be seen from Table 1 that in Comparative Example 3, the design of the light guide plate with V-shaped structures with different extension directions on the light-emitting surface and the reflecting surface is helpful to improve the luminance. However, the structural design of the light guide plate in Comparative Example 3 will lead to problems of adsorption between the light guide plate and the optical film and bright and dark fringes. On the contrary, because the light guide plate of the third embodiment has both the first microstructure and the second microstructure on the reflective surface, it can not only overcome the above-mentioned problems of light guide plate and optical film adsorption and bright and dark lines, but also produce better brightness effect.
表1第三实施方式与比较例1-3的辉度比较表Table 1 Brightness Comparison Table of the Third Embodiment and Comparative Examples 1-3
参照图8，其是示出根据本发明第三实施方式与比较例4及比较例5的光场分布曲线图。其中，比较例4为出光面设置V形结构、反射面设置喷砂结构的导光板，比较例5为出光面设置垂直V形结构且反射面设置微透镜的导光板。由图8可知，图中最粗的曲线700是根据第三实施方式的导光板的仿真实验数据所获得的曲线，相较于其他根据比较例4与5的仿真实验数据所获得曲线820及840平滑。这表示，通过交叉设置的第一微结构及第二微结构可有效控制光场分布角度。其他曲线820及840凹凸不平的地方代表光能量损失的噪声，这样表示对于光场分布角度的控制效果较差。Referring to FIG. 8 , it is a graph showing light field distribution curves according to the third embodiment of the present invention and comparative examples 4 and 5. Referring to FIG. Among them, Comparative Example 4 is a light guide plate with a V-shaped structure on the light-emitting surface and a sandblasting structure on the reflective surface, and Comparative Example 5 is a light guide plate with a vertical V-shaped structure on the light-emitting surface and microlenses on the reflective surface. It can be seen from FIG. 8 that the thickest curve 700 in the figure is the curve obtained according to the simulation experiment data of the light guide plate of the third embodiment, compared with other curves 820 and 840 obtained according to the simulation experiment data of Comparative Examples 4 and 5. smooth. This means that the distribution angle of the light field can be effectively controlled by the cross-arranged first microstructure and the second microstructure. The uneven places of the other curves 820 and 840 represent the noise of light energy loss, which means that the control effect on the light field distribution angle is poor.
参照下表2，其是将前述第三实施方式、比较例4及比较例5的导光板分别搭配一张逆棱镜膜片(turning film)后，所产生的辉度比较表。由表2可知，第三实施方式的导光板所产生的辉度效果明显地较比较例4及比较例5佳。Referring to Table 2 below, it is a comparison table of luminance generated by combining the light guide plates of the third embodiment, Comparative Example 4 and Comparative Example 5 with a turning film respectively. It can be seen from Table 2 that the luminance effect produced by the light guide plate of the third embodiment is obviously better than that of Comparative Example 4 and Comparative Example 5.
表2第三实施方式与比较例4-5的辉度比较表Table 2 Brightness Comparison Table of the Third Embodiment and Comparative Examples 4-5
在一些实施例中，除了导光板100及200本身的第一微结构140及240及第二微结构160及260可同时让导光板产生调整出光角度及光学趋势外，第一微结构140及240或第二微结构160及260的表面亦可通过喷砂或雷射的方式处理成雾面、纹面或粗糙面，用以加强第一微结构140及240及第二微结构160及260的调光效果。In some embodiments, in addition to the first microstructures 140 and 240 and the second microstructures 160 and 260 of the light guide plates 100 and 200 themselves can allow the light guide plates to adjust the light exit angle and optical trend at the same time, the first microstructures 140 and 240 Or the surface of the second microstructures 160 and 260 can also be processed into a matte, textured or rough surface by sandblasting or laser, so as to strengthen the first microstructures 140 and 240 and the second microstructures 160 and 260 Dimming effect.
由上述本发明实施方式可知，本发明的优点主要是通过交叉设置在导光板的同一面上的第一微结构及第二微结构来产生同时控制导光板的出光角度及光学趋势的功能，并可达到混光及出光更均匀的效果。再者，通过对第一微结构及第二微结构表面的粗糙化或雾化的处理，可提升导光板的整体出光外观的均匀性。此外，前述第一微结构及第二微结构皆可利用现有的微结构工艺及设备来制作，不需要额外购置新的工艺设备，因此不会造成工艺成本的负担。It can be seen from the above-mentioned embodiments of the present invention that the advantage of the present invention is mainly that the first microstructure and the second microstructure arranged on the same surface of the light guide plate are intersected to generate the function of simultaneously controlling the light output angle and the optical trend of the light guide plate, and It can achieve the effect of mixing light and emitting light more uniformly. Furthermore, by roughening or atomizing the surfaces of the first microstructure and the second microstructure, the uniformity of the overall light emitting appearance of the light guide plate can be improved. In addition, both the aforementioned first microstructure and the second microstructure can be manufactured using existing microstructure techniques and equipment, without additional purchase of new process equipment, and thus will not cause a burden on process costs.
虽然本发明已以实施方式揭露如上，然其并非用以限定本发明，任何本领域技术人员在不脱离本发明的精神和范围内，当可作各种更动与修改，因此本发明的保护范围当以权利要求所界定的范围为准。Although the present invention has been disclosed above in terms of implementation, it is not intended to limit the present invention. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope should be defined by the claims.
符号说明Symbol Description
100 导光板100 light guide plate
120 主体120 subject
122 入光面122 light incident surface
124 出光面124 Light-emitting surface
126 反射面126 reflective surface
140 第一微结构140 First microstructure
140a 表面140a surface
140b 表面140b surface
160 第二微结构160 Second microstructure
180 V形结构180 V-shaped structure
190 光源190 light sources
200 导光板200 light guide plate
220 主体220 subject
222 入光面222 light incident surface
224 出光面224 light emitting surface
226 反射面226 reflective surface
240 第一微结构240 First microstructure
260 第二微结构260 Second microstructure
280 V形结构280 V-shaped structure
290 光源290 light sources
700 曲线700 curves
720 曲线720 curve
740 曲线740 curve
760 曲线760 curve
820 曲线820 curve
840 曲线840 curve
A1 第一区域A1 first area
A2 第二区域A2 second area
D 深度D depth
D1 第一延伸方向D1 first direction of extension
D2 第二延伸方向D2 Second extension direction
H 高度H height
P 间距P spacing
P’ 间距P’ spacing
S1 第一端缘S1 first edge
S2 第二端缘S2 second edge
W 宽度W width
α 第一夹角α first included angle
β 第二夹角β second included angle
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027393.9ACN106802447A (en) | 2013-08-20 | 2013-08-20 | Light guide plate and backlight module |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027393.9ACN106802447A (en) | 2013-08-20 | 2013-08-20 | Light guide plate and backlight module |
| CN2013103696636ACN103424801A (en) | 2013-08-20 | 2013-08-20 | Light guide plate with multi-directional structure |
| Application Number | Title | Priority Date | Filing Date |
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| CN2013103696636ADivisionCN103424801A (en) | 2013-08-20 | 2013-08-20 | Light guide plate with multi-directional structure |
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| CN106802447Atrue CN106802447A (en) | 2017-06-06 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201710027393.9APendingCN106802447A (en) | 2013-08-20 | 2013-08-20 | Light guide plate and backlight module |
| CN2013103696636APendingCN103424801A (en) | 2013-08-20 | 2013-08-20 | Light guide plate with multi-directional structure |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103696636APendingCN103424801A (en) | 2013-08-20 | 2013-08-20 | Light guide plate with multi-directional structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20170606 | |
| RJ01 | Rejection of invention patent application after publication |