TWI709774B

TWI709774B - Light guide plate and light source module

Info

Publication number: TWI709774B
Application number: TW109105455A
Authority: TW
Inventors: 王慶芳; 劉育維; 郭朝絪; 何嘉峯
Original assignee: 晨豐光電股份有限公司
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-11-11
Also published as: TW202132831A

Abstract

A light guide plate and a light source module are provided. The light guide plate includes a body, a plurality of first strip-like microstructures and a plurality of second strip-like microstructures. The body has a light emitting surface, a bottom surface, and a light incident surface. The first strip-like microstructures are located on one of the light emitting surface and the bottom surface, and are arranged along a first direction. The second strip-like microstructures are located on the light incident surface and are arranged along a second direction.

Description

導光板與光源模組Light guide plate and light source module

本發明是有關於一種導光板與光源模組，且特別是有關於一種具有微結構的導光板與光源模組。The present invention relates to a light guide plate and a light source module, and particularly relates to a light guide plate and a light source module with a microstructure.

目前的電子裝置多利用平面顯示模組進行畫面的顯示，其中又以液晶顯示模組的技術較為純熟且普及化。然而，由於液晶顯示模組的顯示面板本身無法發光，故在顯示面板下方具有背光模組以提供顯示畫面所需光線。背光模組主要可分為側光式背光模組及直下式背光模組。側光式背光模組是利用導光板將配置於導光板入光側面的光源所發出的光線導向導光板的出光面，藉以形成面光源。然而，當背光模組會因為設計不良或處於限制的設計條件時，可能會導致最後出光的光線的亮度並不均勻，而可能產生亮度或顏色均勻度不佳的情況，更嚴重者更會出現目視可見的缺陷（MURA）的現象。並且，當背光模組中具有特定排列圖案的光學微結構時，也容易使不同的特定排列圖案因光學疊加作用，而出現新的摩爾紋（Moiré pattern）現象，進而影響背光模組的光學品質。Current electronic devices mostly use flat display modules to display images, and the technology of liquid crystal display modules is more sophisticated and popular. However, since the display panel of the liquid crystal display module itself cannot emit light, a backlight module is provided under the display panel to provide light required for displaying images. Backlight modules can be mainly divided into edge type backlight modules and direct type backlight modules. The edge-light type backlight module uses a light guide plate to guide the light emitted by a light source arranged on the light entrance side of the light guide plate to the light exit surface of the light guide plate, thereby forming a surface light source. However, when the backlight module is poorly designed or under restricted design conditions, the brightness of the final light may be uneven, which may result in poor brightness or color uniformity, and more serious cases will occur. Visually visible defects (MURA) phenomenon. Moreover, when the backlight module has an optical microstructure with a specific arrangement pattern, it is also easy to cause a new Moiré pattern phenomenon due to the optical superposition of different specific arrangement patterns, thereby affecting the optical quality of the backlight module .

另一方面，現有的習知設計會將多個發光二極體間隔排列在導光板的入光面旁。然而，由於發光二極體具有較高的指向性（directivity），亦即其具有有限的出光角度範圍，因此導光板之靠近發光二極體且落在出光角度範圍內的區域會形成亮區，且在出光角度範圍外的區域會形成暗區，這些亮區與暗區會導致導光板所提供的面光源不均勻，這就是所謂的熱點（hot spot）現象。此外，近年來隨著發光二極體的功率不斷提升，因此配置於導光板之入光面一側的發光二極體之數量便能夠減少以降低產品成本。然而，當發光二極體的數量減少時，相鄰兩發光二極體的間距便會增大，這也導致了暗區的面積變大，而使面光源更加不均勻，進而使熱點現象更加嚴重。On the other hand, the existing conventional design arranges a plurality of light emitting diodes at intervals beside the light incident surface of the light guide plate. However, since the light-emitting diode has high directivity, that is, it has a limited range of light-emitting angle, the light guide plate close to the light-emitting diode and within the light-emitting angle range will form a bright area. In addition, a dark area will be formed in the area outside the range of the light emitting angle. These bright and dark areas will cause uneven surface light sources provided by the light guide plate, which is a so-called hot spot phenomenon. In addition, in recent years, as the power of light-emitting diodes continues to increase, the number of light-emitting diodes arranged on the light-incident surface side of the light guide plate can be reduced to reduce product costs. However, when the number of light-emitting diodes is reduced, the distance between two adjacent light-emitting diodes will increase, which also causes the area of the dark area to become larger, and makes the surface light source more uneven, which in turn makes the hot spot phenomenon more serious. serious.

本發明提供一種導光板，其具有良好的光學表現。The invention provides a light guide plate, which has good optical performance.

本發明提供一種光源模組，其具有良好的光學表現。The invention provides a light source module with good optical performance.

本發明的一種導光板包括一板體、多個第一條狀微結構以及多個第二條狀微結構。板體具有一出光面、一底面以及一入光面，其中底面與出光面相對，入光面連接底面與出光面。第一條狀微結構位於出光面以及底面的其中一者上，其中第一條狀微結構沿一第一方向排列。第二條狀微結構位於入光面上，其中第二條狀微結構沿一第二方向排列。A light guide plate of the present invention includes a plate body, a plurality of first strip-shaped microstructures and a plurality of second strip-shaped microstructures. The board has a light-emitting surface, a bottom surface and a light-incident surface, wherein the bottom surface is opposite to the light-emitting surface, and the light-incident surface connects the bottom surface and the light-emitting surface. The first strip-shaped microstructures are located on one of the light emitting surface and the bottom surface, and the first strip-shaped microstructures are arranged along a first direction. The second strip-shaped microstructures are located on the light incident surface, and the second strip-shaped microstructures are arranged along a second direction.

本發明的一種光源模組包括一前述的導光板以及一光源。光源配置於入光面旁，其中光源具有多個發光元件，發光元件對應於第二條狀微結構排列，且發光元件的排列方向平行於第二方向。A light source module of the present invention includes the aforementioned light guide plate and a light source. The light source is arranged beside the light incident surface, wherein the light source has a plurality of light emitting elements, the light emitting elements are arranged corresponding to the second strip-shaped microstructure, and the arrangement direction of the light emitting elements is parallel to the second direction.

在本發明的一實施例中，第一方向與第二方向彼此平行於或彼此垂直。In an embodiment of the present invention, the first direction and the second direction are parallel to or perpendicular to each other.

在本發明的一實施例中，上述的導光板更包括多個第三條狀微結構，位於出光面以及底面的另一者上，其中第三條狀微結構沿一第三方向排列，第三方向實質上垂直於第一方向。In an embodiment of the present invention, the above-mentioned light guide plate further includes a plurality of third strip-shaped microstructures located on the other of the light emitting surface and the bottom surface, wherein the third strip-shaped microstructures are arranged along a third direction. The three directions are substantially perpendicular to the first direction.

在本發明的一實施例中，上述的第一條狀微結構的延伸方向與第三條狀微結構的延伸方向彼此歪斜。In an embodiment of the present invention, the extension direction of the aforementioned first strip-shaped microstructure and the extension direction of the third strip-shaped microstructure are skewed to each other.

在本發明的一實施例中，上述的第一條狀微結構的截面、第二條狀微結構的截面以及第三條狀微結構的截面分別為柱狀或角錐狀。In an embodiment of the present invention, the cross-section of the first strip-shaped microstructure, the cross-section of the second strip-shaped microstructure, and the cross-section of the third strip-shaped microstructure are columnar or pyramid-shaped, respectively.

在本發明的一實施例中，上述的導光板更包括多個導光微結構，位於板體的內部，且導光微結構與底面之間具有一間距。In an embodiment of the present invention, the above-mentioned light guide plate further includes a plurality of light guide microstructures located inside the plate body, and there is a distance between the light guide microstructures and the bottom surface.

在本發明的一實施例中，上述的板體的材質包含玻璃，且板體還包括一第一側表面、一第二側表面以及一第三側表面，第一側表面與第三側表面相對，第二側表面與入光面相對，板體的出光面、底面、入光面、第一側表面、第二側表面以及第三側表面的至少其中一者經化學處理而被強化。In an embodiment of the present invention, the material of the board body includes glass, and the board body further includes a first side surface, a second side surface, and a third side surface, the first side surface and the third side surface In contrast, the second side surface is opposite to the light incident surface, and at least one of the light exit surface, the bottom surface, the light incident surface, the first side surface, the second side surface, and the third side surface of the board is strengthened by chemical treatment.

在本發明的一實施例中，上述的板體的出光面、底面、入光面、第一側表面、第二側表面以及第三側表面的至少其中一者經化學處理後具有一強化深度，且位於強化深度中的板體的部分的折射率介於1.40至1.90。In an embodiment of the present invention, at least one of the light exit surface, the bottom surface, the light entrance surface, the first side surface, the second side surface, and the third side surface of the above-mentioned board has a strengthening depth after chemical treatment , And the refractive index of the part of the plate in the strengthening depth is between 1.40 and 1.90.

在本發明的一實施例中，上述的第一側表面與第三側表面為曲面。In an embodiment of the present invention, the aforementioned first side surface and third side surface are curved surfaces.

在本發明的一實施例中，上述的出光面與底面為曲面，且入光面與第二側表面連接於出光面與底面的邊為曲線。In an embodiment of the present invention, the aforementioned light-emitting surface and the bottom surface are curved surfaces, and the sides of the light-incident surface and the second side surface connected to the light-emitting surface and the bottom surface are curved.

在本發明的一實施例中，上述的出光面與底面為曲面，且第一側表面與第三側表面連接於出光面與底面的邊為曲線。In an embodiment of the present invention, the aforementioned light-emitting surface and the bottom surface are curved surfaces, and the sides of the first side surface and the third side surface connected to the light-emitting surface and the bottom surface are curved.

基於上述，光源模組以及導光板可藉由第二條狀微結構的配置，來使被擴散以消除熱點現象，且也可藉由第一條狀微結構與第三條狀微結構的匹配，可有效地改善缺陷(MURA)現象，進而提升導光板以及光源模組的光學品質。並且，光源模組以及導光板還可藉由導光板內部的導光微結構的配置，來進一步地提升導光板以及光源模組的光學品質。此外，光源模組以及導光板還可通過化學強化處理來提升板體的表面部分的硬度，並進一步對於板體的表面部分與第一條狀微結構與第二條狀微結構或第三條狀微結構來進行折射率的光學匹配，而進一步提升導光板以及光源模組的光學表現。Based on the above, the light source module and the light guide plate can be diffused to eliminate the hot spot phenomenon through the configuration of the second strip-shaped microstructure, and can also be matched by the first strip-shaped microstructure and the third strip-shaped microstructure. , Can effectively improve the defect (MURA) phenomenon, thereby improving the optical quality of the light guide plate and the light source module. Moreover, the light source module and the light guide plate can further improve the optical quality of the light guide plate and the light source module through the configuration of the light guide microstructure inside the light guide plate. In addition, the light source module and the light guide plate can also be chemically strengthened to improve the hardness of the surface part of the plate, and further improve the surface part of the plate and the first strip-shaped microstructure and the second strip-shaped microstructure or the third strip. Shaped microstructures to perform optical matching of refractive index, and further improve the optical performance of the light guide plate and the light source module.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

圖1是本發明一實施例的一種光源模組的架構示意圖。圖2是圖1的光源模組的側視示意圖。請參照圖1與圖2，本實施例的光源模組200包括一導光板100以及一光源210。舉例而言，在本實施例中，光源210可為包含多個發光元件LE的光條，而適於提供光束，且這些發光元件LE可以是發光二極體（light emitting diode，LED）元件、雷射二極體（laser diode，LD）或其它種類的發光元件。並且，這些發光元件LE可以是單色發光二極體或多色發光二極體。也就是說，光束可以是單色光束或多色光束。FIG. 1 is a schematic structural diagram of a light source module according to an embodiment of the invention. Fig. 2 is a schematic side view of the light source module of Fig. 1. 1 and FIG. 2, the light source module 200 of this embodiment includes a light guide plate 100 and a light source 210. For example, in this embodiment, the light source 210 may be a light bar including a plurality of light emitting elements LE, which is suitable for providing a light beam, and these light emitting elements LE may be light emitting diode (LED) elements, Laser diode (LD) or other types of light-emitting elements. Furthermore, these light-emitting elements LE may be monochromatic light-emitting diodes or multi-color light-emitting diodes. That is, the light beam may be a monochromatic light beam or a multi-color light beam.

另一方面，在本實施例中，導光板100適於傳遞來自光源210的光束，其材質可以是玻璃或塑膠，塑膠可包括聚甲基丙烯酸甲酯（PMMA）或聚碳酸酯（PC），但不以此為限。此外，在本實施例中，導光板100雖皆繪示為平板導光板，但亦可為其他型式的導光板（如楔形導光板或具有曲面的導光板），本實施例不以此為限。On the other hand, in this embodiment, the light guide plate 100 is suitable for transmitting the light beam from the light source 210, and its material can be glass or plastic, and the plastic can include polymethylmethacrylate (PMMA) or polycarbonate (PC). But not limited to this. In addition, in this embodiment, although the light guide plate 100 is shown as a flat light guide plate, it can also be other types of light guide plates (such as a wedge-shaped light guide plate or a light guide plate with a curved surface). This embodiment is not limited to this. .

具體而言，如圖1與圖2所示，在本實施例中，導光板100包括一板體110、多個第一條狀微結構120、多個第二條狀微結構130以及多個第三條狀微結構140。板體110具有一出光面SE、一底面SB、一入光面SI、一第一側表面SS1、一第二側表面SS2以及一第三側表面SS3，其中底面SB與出光面SE相對，第一側表面SS1與第三側表面SS3相對，第二側表面SS2與入光面SI相對，入光面SI、第一側表面SS1、第二側表面SS2以及第三側表面SS3分別連接了底面SB與出光面SE。Specifically, as shown in FIGS. 1 and 2, in this embodiment, the light guide plate 100 includes a plate body 110, a plurality of first strip-shaped microstructures 120, a plurality of second strip-shaped microstructures 130, and a plurality of The third strip-shaped microstructure 140. The board 110 has a light exit surface SE, a bottom surface SB, a light incident surface SI, a first side surface SS1, a second side surface SS2, and a third side surface SS3. The bottom surface SB is opposite to the light exit surface SE. One side surface SS1 is opposite to the third side surface SS3, the second side surface SS2 is opposite to the light incident surface SI, and the light incident surface SI, the first side surface SS1, the second side surface SS2, and the third side surface SS3 are respectively connected to the bottom surface SB and shiny surface SE.

進一步而言，如圖1與圖2所示，第一條狀微結構120位於出光面SE上，第三條狀微結構140位於底面SB上，其中第一條狀微結構120沿第一方向D1排列，第三條狀微結構140沿第三方向D3排列，且第三方向D3實質上垂直於第一方向D1。另一方面，第二條狀微結構130位於入光面SI上，其中第二條狀微結構130沿第二方向D2排列。Furthermore, as shown in FIGS. 1 and 2, the first strip-shaped microstructure 120 is located on the light-emitting surface SE, and the third strip-shaped microstructure 140 is located on the bottom surface SB. The first strip-shaped microstructure 120 is located along the first direction. D1 arrangement, the third strip-shaped microstructure 140 is arranged along the third direction D3, and the third direction D3 is substantially perpendicular to the first direction D1. On the other hand, the second strip-shaped microstructures 130 are located on the light incident surface SI, and the second strip-shaped microstructures 130 are arranged along the second direction D2.

並且，如圖1所示，發光元件LE對應於第二條狀微結構130排列，且發光元件LE的排列方向平行於第一方向D1與第二方向D2。也就是說，在本實施例中，第一方向D1實質上平行於第二方向D2。並且，如圖1所示，第一方向D1與第二方向D2皆平行於入光面SI，而第三方向D3則平行於入光面SI的法線方向，換言之，第三方向D3實質上垂直於第一方向D1與第二方向D2。Moreover, as shown in FIG. 1, the light-emitting elements LE are arranged corresponding to the second strip-shaped microstructure 130, and the arrangement direction of the light-emitting elements LE is parallel to the first direction D1 and the second direction D2. That is, in this embodiment, the first direction D1 is substantially parallel to the second direction D2. And, as shown in FIG. 1, the first direction D1 and the second direction D2 are both parallel to the light incident surface SI, and the third direction D3 is parallel to the normal direction of the light incident surface SI. In other words, the third direction D3 is substantially It is perpendicular to the first direction D1 and the second direction D2.

為了便於描述背光模組200中各元件或結構的方向，以下定義一直角座標系，其中x軸實質上平行於第一方向D1以及第二方向D2，y軸實質上平行於導光板100的板體110的底面SB以及出光面SE的法線方向，而z軸實質上平行於第三方向D3，而垂直於x軸與y軸，但直角座標系僅是參考附加圖式的座標。因此，使用的座標用語是用來說明並非用來限制本發明。In order to facilitate the description of the direction of each element or structure in the backlight module 200, a right-angle coordinate system is defined below, wherein the x-axis is substantially parallel to the first direction D1 and the second direction D2, and the y-axis is substantially parallel to the plate of the light guide plate 100 The normal direction of the bottom surface SB and the light-emitting surface SE of the body 110, and the z-axis is substantially parallel to the third direction D3, and perpendicular to the x-axis and the y-axis, but the rectangular coordinate system is only the coordinates with reference to the attached drawing. Therefore, the coordinate terms used are used to illustrate but not to limit the present invention.

舉例而言，如圖1以及圖2所示，在本實施例中，第二條狀微結構130在入光面SI上沿y軸(垂直方向)呈直線延伸，如此，在本實施例中，當光源210提供的光束經由入光面SI進入導光板100後，光束能藉由第二條狀微結構130的配置，而被擴散，如此，即可消除導光板100的入光側所形成的亮暗帶區域的熱點現象，進而提供均勻的面光源210。然而，本發明不以此為限，在其他未繪示的實施例中，第二條狀微結構130亦可沿x軸呈直線延伸(水平方向)，或亦可在入光面SI呈彎折曲線狀延伸，只要光源210的光束能藉由第二條狀微結構130的配置，而被擴散以消除熱點現象即可。For example, as shown in FIG. 1 and FIG. 2, in this embodiment, the second strip-shaped microstructure 130 extends in a straight line along the y-axis (vertical direction) on the light incident surface SI. Thus, in this embodiment After the light beam provided by the light source 210 enters the light guide plate 100 through the light incident surface SI, the light beam can be diffused by the configuration of the second strip-shaped microstructure 130. In this way, the light incident side of the light guide plate 100 can be eliminated. The hot spot phenomenon in the bright and dark zone regions of the present invention provides a uniform surface light source 210. However, the present invention is not limited to this. In other embodiments not shown, the second strip-shaped microstructure 130 may also extend linearly along the x-axis (horizontal direction), or may be curved on the light incident surface SI. To extend in a curved shape, as long as the light beam of the light source 210 can be diffused by the arrangement of the second strip-shaped microstructure 130 to eliminate the hot spot phenomenon.

接著，來自光源210的光束經由入光面SI進入導光板100後，可經由全內反射（Total Internal Reflection, TIR）而於導光板100中傳遞，並且，光束能藉由這些第一條狀微結構120與第三條狀微結構140的配置而改變行進方向，進而自出光面SE離開導光板100。更進一步而言，如圖1以及圖2所示，在本實施例中，第一條狀微結構120在出光面SE上沿著第三方向D3延伸，第三條狀微結構140在底面SB上沿著第一方向D1延伸。也就是說，在本實施例中，第一條狀微結構120的延伸方向與第三條狀微結構140的延伸方向實質上彼此歪斜。如此，當光束藉由第一條狀微結構120與第三條狀微結構140的配置而離開導光板100時，可藉由第一條狀微結構120與第三條狀微結構140的結構匹配，來有效地改善缺陷(MURA)現象以及摩爾紋（Moiré pattern）現象，而提升導光板100以及光源模組200的光學品質。Then, after the light beam from the light source 210 enters the light guide plate 100 through the light incident surface SI, it can be transmitted in the light guide plate 100 through Total Internal Reflection (TIR), and the light beam can pass through these first strip micro The configuration of the structure 120 and the third strip-shaped microstructure 140 changes the traveling direction, and then leaves the light guide plate 100 from the light emitting surface SE. Furthermore, as shown in FIGS. 1 and 2, in this embodiment, the first strip-shaped microstructure 120 extends along the third direction D3 on the light-emitting surface SE, and the third strip-shaped microstructure 140 is on the bottom surface SB. The upper part extends along the first direction D1. That is, in this embodiment, the extension direction of the first strip-shaped microstructure 120 and the extension direction of the third strip-shaped microstructure 140 are substantially skewed to each other. In this way, when the light beam leaves the light guide plate 100 through the arrangement of the first strip-shaped microstructure 120 and the third strip-shaped microstructure 140, the structure of the first strip-shaped microstructure 120 and the third strip-shaped microstructure 140 Matching can effectively improve the MURA phenomenon and the Moiré pattern phenomenon, and improve the optical quality of the light guide plate 100 and the light source module 200.

舉例而言，如圖1以及圖2所示，第一條狀微結構120的截面與第二條狀微結構130的截面為柱狀，而第三條狀微結構140為角錐狀，但本發明不以此為限。在另一未繪示的實施例中，第一條狀微結構120的截面與第二條狀微結構130的截面亦可為角錐狀，而第三條狀微結構140亦可為柱狀。換言之，在本實施例中，第一條狀微結構120的截面與第二條狀微結構130的截面或第三條狀微結構140的截面可分別為柱狀或角錐狀其中的任一者，或其他的形狀，只要能在適當的光學匹配下，使得光源210的光束能藉由第二條狀微結構130的配置被擴散，且通過第一條狀微結構120與第三條狀微結構140的結構匹配來改善缺陷(MURA)現象以及摩爾紋（Moiré pattern）現象即可。For example, as shown in FIGS. 1 and 2, the cross-section of the first strip-shaped microstructure 120 and the cross-section of the second strip-shaped microstructure 130 are columnar, and the third strip-shaped microstructure 140 is pyramid-shaped. The invention is not limited to this. In another embodiment not shown, the cross section of the first strip-shaped microstructure 120 and the cross section of the second strip-shaped microstructure 130 may also be pyramidal, and the third strip-shaped microstructure 140 may also be columnar. In other words, in this embodiment, the cross-section of the first strip-shaped microstructure 120 and the cross-section of the second strip-shaped microstructure 130 or the cross-section of the third strip-shaped microstructure 140 may be either columnar or pyramid-shaped, respectively. , Or other shapes, as long as the light source 210 can be diffused by the configuration of the second strip-shaped microstructure 130 under proper optical matching, and pass through the first strip-shaped microstructure 120 and the third strip-shaped microstructure 120 The structure of the structure 140 can be matched to improve the defect (MURA) phenomenon and the Moiré pattern phenomenon.

詳細而言，當第一條狀微結構120的截面、第二條狀微結構130的截面或第三條狀微結構140的截面為圓柱狀時，其曲律半徑的尺寸介於0.01毫米~0.5毫米之間。當第一條狀微結構120的截面、第二條狀微結構130的截面或第三條狀微結構140的截面為角錐狀時，第二條狀微結構130的頂角的值可介於30度~130度之間，第一條狀微結構120或第三條狀微結構140的頂角的值可介於30度~130度之間。In detail, when the cross-section of the first strip-shaped microstructure 120, the cross-section of the second strip-shaped microstructure 130, or the cross-section of the third strip-shaped microstructure 140 is cylindrical, the radius of curvature is between 0.01 mm~ Between 0.5 mm. When the cross-section of the first strip-shaped microstructure 120, the cross-section of the second strip-shaped microstructure 130, or the cross-section of the third strip-shaped microstructure 140 is a pyramid shape, the value of the vertex angle of the second strip-shaped microstructure 130 may be between Between 30 degrees and 130 degrees, the apex angle of the first strip-shaped microstructure 120 or the third strip-shaped microstructure 140 may be between 30 degrees and 130 degrees.

此外，由於條狀微結構在製作上會具有轉寫率高以及再現性佳的優點，因此藉由第一條狀微結構120與第二條狀微結構130或第三條狀微結構140的配置，能形成具有良好結構一致性的導光板100。藉此，光源模組200與導光板100的光學表現可受到控制，而具有良好的光學品質。In addition, since the strip-shaped microstructures have the advantages of high transfer rate and good reproducibility in the production, the first strip-shaped microstructure 120 and the second strip-shaped microstructure 130 or the third strip-shaped microstructure 140 The configuration can form the light guide plate 100 with good structural consistency. In this way, the optical performance of the light source module 200 and the light guide plate 100 can be controlled and have good optical quality.

另一方面，如圖2所示，在本實施例中，導光板100更包括位於板體110的內部的多個導光微結構150，且導光微結構150與底面SB之間具有間距P。舉例而言，導光微結構150可以雷射雕刻的方式形成於板體110內。如此，可避免其他製程如以印刷或噴墨製程形成時所致的高輝度減損率及低良率，或是如以蝕刻製程形成時所致的低轉寫率及光表現異常等問題，進而提升導光板100以及光源模組200的光學品質。On the other hand, as shown in FIG. 2, in this embodiment, the light guide plate 100 further includes a plurality of light guide microstructures 150 located inside the plate body 110, and there is a distance P between the light guide microstructures 150 and the bottom surface SB. . For example, the light guiding microstructure 150 can be formed in the plate body 110 in a laser engraving manner. In this way, other processes such as high brightness loss rate and low yield caused by printing or inkjet process, or low transfer rate and abnormal light performance caused by etching process can be avoided, and then Improve the optical quality of the light guide plate 100 and the light source module 200.

此外，在本實施例中，當板體110的材質為玻璃時，板體110的出光面SE、底面SB、入光面SI、第一側表面SS1、第二側表面SS2以及第三側表面SS3的至少其中一者經化學處理而被強化。進一步而言，當板體110的出光面SE、底面SB、入光面SI、第一側表面SS1、第二側表面SS2以及第三側表面SS3的至少其中一者經化學強化處理後具有一強化深度。位於強化深度中的板體110的部分具有較高的硬度，而可提供防刮、耐磨等功能。此外，位於強化深度中的板體110的部分的折射率介於1.40至1.90，如此，導光板100可通過化學強化處理來進一步對於位在強化深度中的板體110的部分與第一條狀微結構120與第二條狀微結構130或第三條狀微結構140來進行折射率的光學匹配，而進一步提升導光板100以及光源模組200的光學表現。In addition, in this embodiment, when the material of the board 110 is glass, the light exit surface SE, the bottom surface SB, the light entrance surface SI, the first side surface SS1, the second side surface SS2, and the third side surface of the board 110 At least one of SS3 is strengthened by chemical treatment. Furthermore, when at least one of the light-emitting surface SE, the bottom surface SB, the light-incident surface SI, the first side surface SS1, the second side surface SS2, and the third side surface SS3 of the plate body 110 has a chemical strengthening treatment Strengthen the depth. The part of the plate body 110 located in the strengthening depth has higher hardness, and can provide functions such as scratch resistance and wear resistance. In addition, the refractive index of the part of the plate 110 located in the strengthening depth is between 1.40 and 1.90. In this way, the light guide plate 100 can be further treated with the first strip shape of the part of the plate 110 located in the strengthening depth through chemical strengthening treatment. The microstructure 120 and the second strip-shaped microstructure 130 or the third strip-shaped microstructure 140 perform optical matching of refractive index, thereby further improving the optical performance of the light guide plate 100 and the light source module 200.

此外，在本實施例中，光源模組200可進一步包括反射片RE。反射片RE設置在底面SB下方，且底面SB位於出光面SE與反射片RE之間，以將自底面SB射出的光束反射回導光板100中，進而提升光的利用率。In addition, in this embodiment, the light source module 200 may further include a reflective sheet RE. The reflective sheet RE is disposed below the bottom surface SB, and the bottom surface SB is located between the light exit surface SE and the reflective sheet RE, so as to reflect the light beam emitted from the bottom surface SB back into the light guide plate 100, thereby improving the utilization rate of light.

此外，依據不同的需求，光源模組200可進一步包括其他元件。舉例而言，光源模組200可進一步包括至少一擴散片DF以及至少一稜鏡片PM。擴散片DF以及稜鏡片PM依序堆疊於出光面SE上方。在其他實施例中，可省略擴散片DF以及稜鏡片PM的其中至少一者。以下實施例皆可同此改良，於下便不再重述。In addition, according to different requirements, the light source module 200 may further include other components. For example, the light source module 200 may further include at least one diffusion sheet DF and at least one diffusing sheet PM. The diffusing sheet DF and the diffusing sheet PM are sequentially stacked on the light emitting surface SE. In other embodiments, at least one of the diffusing sheet DF and the diffusing sheet PM may be omitted. The following embodiments can all be improved with this, and will not be repeated below.

以下藉由圖3至圖4說明光源模組200的其他實施型態，其中相同或相似的元件以相同或相似的標號表示，於下便不再重述。Hereinafter, other implementations of the light source module 200 will be described with reference to FIGS. 3 to 4, in which the same or similar components are denoted by the same or similar reference numerals, and will not be repeated below.

圖3是本發明一實施例的另一種光源模組的側視示意圖。圖4是本發明一實施例的又一種光源模組的側視示意圖。請參照圖3與圖4，光源模組400與光源模組600相似於圖1的光源模組200，其主要差異如下所述。在圖3與圖4的實施例中，光源模組400的導光板300與光源模組600的導光板500不包括第三條狀微結構140，而是僅具有第一條狀微結構320、520的配置。並且，如圖3所示，在圖3的實施例中，當第一條狀微結構320、520位於出光面SE上時，第一條狀微結構320、520的排列方向，即第一方向D1，實質上仍平行於第二方向D2。然而，如圖4所示，在圖4的實施例中，當第一條狀微結構320、520位於底面SB上時，第一條狀微結構320、520的排列方向，即第一方向D1，實質上垂直於第二方向D2。3 is a schematic side view of another light source module according to an embodiment of the invention. 4 is a schematic side view of another light source module according to an embodiment of the present invention. 3 and 4, the light source module 400 and the light source module 600 are similar to the light source module 200 of FIG. 1, and the main differences are as follows. In the embodiments of FIGS. 3 and 4, the light guide plate 300 of the light source module 400 and the light guide plate 500 of the light source module 600 do not include the third strip-shaped microstructure 140, but only have the first strip-shaped microstructure 320, 520 configuration. And, as shown in FIG. 3, in the embodiment of FIG. 3, when the first strip-shaped microstructures 320, 520 are located on the light-emitting surface SE, the arrangement direction of the first strip-shaped microstructures 320, 520 is the first direction D1 is still substantially parallel to the second direction D2. However, as shown in FIG. 4, in the embodiment of FIG. 4, when the first strip-shaped microstructures 320, 520 are located on the bottom surface SB, the arrangement direction of the first strip-shaped microstructures 320, 520 is the first direction D1 , Substantially perpendicular to the second direction D2.

如此，來自光源210的光束經由入光面SI進入導光板300、500時，仍可藉由第二條狀微結構130的配置，來使被擴散以消除熱點現象，之後再經由全內反射而於導光板300、500中傳遞，並且，光束能藉由這些第一條狀微結構320、520的配置而改變行進方向，進而自出光面SE離開導光板300、500，進而亦能使導光板300、500以及光源模組400、600具有良好的光學表現。In this way, when the light beam from the light source 210 enters the light guide plate 300, 500 through the light incident surface SI, it can still be diffused to eliminate the hot spot phenomenon by the configuration of the second strip-shaped microstructure 130, and then be reflected by total internal reflection. The light is transmitted in the light guide plates 300, 500, and the light beam can change the traveling direction by the arrangement of these first strip-shaped microstructures 320, 520, and then leave the light guide plates 300, 500 from the light exit surface SE, thereby also enabling the light guide plate 300, 500 and light source modules 400, 600 have good optical performance.

此外，在圖3與圖4的實施例中，導光板300、500以及光源模組200亦可增設與第一條狀微結構320、520匹配的第三條狀微結構(未繪示)，且當第一條狀微結構320、520位於出光面SE以及底面SB的其中一者上時，第三條狀微結構(未繪示)位於出光面SE以及底面SB的另一者上，並且，在本實施例中，第一條狀微結構320、520的排列方向(即第一方向D1)，實質上垂直於第三條狀微結構140的排列方向(第三方向D3)，即可。如此，光源模組400、600以及導光板300、500亦可藉由第一條狀微結構320、520與第三條狀微結構(未繪示)的結構匹配，來有效地改善缺陷(MURA)現象以及摩爾紋（Moiré pattern）現象，而提升導光板300、500以及光源模組400、600的光學品質，進而達到前述的導光板100以及光源模組200的效果與優點，在此就不再贅述。In addition, in the embodiments of FIGS. 3 and 4, the light guide plates 300, 500 and the light source module 200 can also be additionally provided with a third strip-shaped microstructure (not shown) matching the first strip-shaped microstructures 320, 520. And when the first strip-shaped microstructures 320, 520 are located on one of the light-emitting surface SE and the bottom surface SB, the third strip-shaped microstructure (not shown) is located on the other of the light-emitting surface SE and the bottom surface SB, and In this embodiment, the arrangement direction of the first strip-shaped microstructures 320 and 520 (ie, the first direction D1) is substantially perpendicular to the arrangement direction of the third strip-shaped microstructure 140 (the third direction D3). . In this way, the light source modules 400, 600 and the light guide plates 300, 500 can also be matched with the first strip-shaped microstructure 320, 520 and the third strip-shaped microstructure (not shown) to effectively improve defects (MURA ) Phenomenon and Moiré pattern phenomenon, and improve the optical quality of the light guide plate 300, 500 and the light source module 400, 600, and then achieve the aforementioned effects and advantages of the light guide plate 100 and the light source module 200, not here Repeat it again.

值得注意的是，在上述的實施例中，板體110的各表面雖以平面為例示，但本發明不以此為限。在其他的實施例中，板體110的各表面亦可為曲面，並依據其光學需求而做對應的調整，任何所屬領域中具有通常知識者在參照本發明之後，當可對其表面形狀作適當的更動，而使其達到與前述的導光板100以及光源模組200類似的效果與優點，惟其仍應屬於本發明的範疇內。以下將另舉部分實施例作為說明。It is worth noting that, in the above-mentioned embodiment, although each surface of the board 110 is illustrated as a plane, the present invention is not limited thereto. In other embodiments, each surface of the plate 110 can also be curved, and corresponding adjustments can be made according to its optical requirements. Anyone with ordinary knowledge in the field can make adjustments to the surface shape after referring to the present invention. Appropriate changes are made to achieve similar effects and advantages to the aforementioned light guide plate 100 and light source module 200, but they should still fall within the scope of the present invention. Hereinafter, some other embodiments will be cited for description.

圖5至圖6B是本發明一實施例的不同導光板的板體的示意圖。參照圖5至圖6B，導光板100A、導光板100B與導光板100C相似於圖1的導光板100，其主要差異如下所述。5 to 6B are schematic diagrams of plates of different light guide plates according to an embodiment of the present invention. 5 to 6B, the light guide plate 100A, the light guide plate 100B, and the light guide plate 100C are similar to the light guide plate 100 of FIG. 1, and the main differences are as follows.

在圖5的實施例中，導光板100A的第一側表面SS1與第三側表面SS3為曲面，且第一側表面SS1與第三側表面SS3對稱地向外側彎曲。然而，在圖5的實施例中，在入光面SI、出光面SE以及底面SB上仍配置有第二條狀微結構(未繪示)與第一條狀微結構120以及第三條狀微結構(未繪示)。如此，來自光源210的光束經由入光面SI進入導光板100A時，採用了導光板100A的光源模組200仍可藉由第二條狀微結構(未繪示)的配置，來使被擴散以消除熱點現象，且採用了導光板100A的光源模組200也可藉由第一條狀微結構120與第三條狀微結構(未繪示)的匹配，可有效地改善缺陷(MURA)現象，而提升光學品質，進而達到與前述的導光板100以及光源模組200的效果與優點，在此就不再贅述。In the embodiment of FIG. 5, the first side surface SS1 and the third side surface SS3 of the light guide plate 100A are curved surfaces, and the first side surface SS1 and the third side surface SS3 are symmetrically curved outward. However, in the embodiment of FIG. 5, the second strip-shaped microstructures (not shown) and the first strip-shaped microstructures 120 and the third strip-shaped microstructures are still disposed on the light incident surface SI, the light exit surface SE, and the bottom surface SB. Microstructure (not shown). In this way, when the light beam from the light source 210 enters the light guide plate 100A through the light incident surface SI, the light source module 200 using the light guide plate 100A can still be diffused by the configuration of the second strip-shaped microstructure (not shown) In order to eliminate hot spots, the light source module 200 using the light guide plate 100A can also effectively improve defects (MURA) by matching the first strip-shaped microstructure 120 with the third strip-shaped microstructure (not shown) In order to improve the optical quality, the effects and advantages of the light guide plate 100 and the light source module 200 mentioned above can be achieved, which will not be repeated here.

另一方面，在圖6A的實施例中，導光板100B的出光面SE與底面SB為曲面，出光面SE與底面SB朝向出光面SE的出光側彎曲，且入光面SI與第二側表面SS2連接於出光面SE與底面SB的邊為曲線。而在圖6B的實施例中，導光板100C的出光面SE與底面SB亦為曲面，出光面SE與底面SB亦朝向出光面SE的出光側彎曲，但其與圖6A的實施例的差別是第一側表面SS1與第三側表面SS3連接於出光面SE與底面SB的邊為曲線。如此，當光源模組200採用導光板100B或導光板100C時，由於其出光面SE朝向出光側彎曲，因此採用了導光板100B或導光板100C的光源模組200還可調整視差，而提升使用者的觀賞舒適度。On the other hand, in the embodiment of FIG. 6A, the light exit surface SE and the bottom surface SB of the light guide plate 100B are curved surfaces, the light exit surface SE and the bottom surface SB are curved toward the light exit side of the light exit surface SE, and the light entrance surface SI and the second side surface The edge of SS2 connected to the light emitting surface SE and the bottom surface SB is a curve. In the embodiment of FIG. 6B, the light-emitting surface SE and the bottom surface SB of the light guide plate 100C are also curved, and the light-emitting surface SE and the bottom surface SB are also curved toward the light-emitting side of the light-emitting surface SE, but the difference from the embodiment of FIG. 6A is The sides of the first side surface SS1 and the third side surface SS3 connected to the light emitting surface SE and the bottom surface SB are curved. In this way, when the light source module 200 adopts the light guide plate 100B or the light guide plate 100C, since the light exit surface SE is curved toward the light exit side, the light source module 200 using the light guide plate 100B or the light guide plate 100C can also adjust the parallax and improve the use The viewer’s viewing comfort.

並且，在圖6A至圖6B的實施例中，由於導光板100B（或導光板100C）在入光面SI、出光面SE以及底面SB上仍配置有第二條狀微結構130與第一條狀微結構120以及第三條狀微結構140，因此，來自光源210的光束經由入光面SI進入導光板100B（或導光板100C）時，其仍可藉由第二條狀微結構130的配置，來使被擴散以消除熱點現象，且也可藉由第一條狀微結構120與第三條狀微結構140的匹配，可有效地改善缺陷(MURA)現象以及摩爾紋（Moiré pattern）現象，而提升光學品質，進而使採用了導光板100B或導光板100C的光源模組200亦可達到與前述的導光板100以及光源模組200的效果與優點，在此就不再贅述。Moreover, in the embodiment of FIGS. 6A to 6B, since the light guide plate 100B (or the light guide plate 100C) is still configured with the second strip-shaped microstructure 130 and the first strip on the light incident surface SI, the light exit surface SE, and the bottom surface SB Since the light beam from the light source 210 enters the light guide plate 100B (or the light guide plate 100C) through the light incident surface SI, it can still pass through the second strip microstructure 130 It is configured to be diffused to eliminate the hot spot phenomenon, and the matching of the first strip-shaped microstructure 120 and the third strip-shaped microstructure 140 can effectively improve the defect (MURA) phenomenon and the moiré pattern. In order to improve the optical quality, the light source module 200 using the light guide plate 100B or the light guide plate 100C can also achieve the effects and advantages of the aforementioned light guide plate 100 and the light source module 200, which will not be repeated here.

綜上所述，本發明的光源模組以及導光板可藉由第二條狀微結構的配置，來使被擴散以消除熱點現象，且也可藉由第一條狀微結構與第三條狀微結構的匹配，可有效地改善缺陷(MURA)現象以及摩爾紋（Moiré pattern）現象，進而提升導光板以及光源模組的光學品質。並且，光源模組以及導光板還可藉由導光板內部的導光微結構的配置，來進一步地提升導光板以及光源模組的光學品質。此外，光源模組以及導光板還可通過化學強化處理來提升板體的表面部分的硬度，並進一步對於板體的表面部分與第一條狀微結構與第二條狀微結構或第三條狀微結構來進行折射率的光學匹配，而進一步提升導光板以及光源模組的光學表現。In summary, the light source module and the light guide plate of the present invention can be diffused to eliminate hot spots through the configuration of the second strip-shaped microstructure, and the first strip-shaped microstructure and the third strip The matching of the microstructure can effectively improve the defect (MURA) phenomenon and the Moiré pattern phenomenon, thereby improving the optical quality of the light guide plate and the light source module. Moreover, the light source module and the light guide plate can further improve the optical quality of the light guide plate and the light source module through the configuration of the light guide microstructure inside the light guide plate. In addition, the light source module and the light guide plate can also be chemically strengthened to improve the hardness of the surface part of the plate, and further improve the surface part of the plate and the first strip-shaped microstructure and the second strip-shaped microstructure or the third strip. Shaped microstructures to perform optical matching of refractive index, and further improve the optical performance of the light guide plate and the light source module.

100、100A、100B、100C、300、500:導光板 110:板體 120:第一條狀微結構 130:第二條狀微結構 140:第三條狀微結構 150:導光微結構 200、400、600:光源模組 210:光源 D1:第一方向 D2:第二方向 D3:第三方向 DF:擴散片 LE:發光元件 P:間距 PM:稜鏡片 RE:反射片 SE:出光面 SB:底面 SI:入光面 SS1:第一側表面 SS2:第二側表面 SS3:第三側表面 100, 100A, 100B, 100C, 300, 500: light guide plate 110: Board body 120: The first strip-like microstructure 130: second strip-like microstructure 140: The third strip-like microstructure 150: light guide microstructure 200, 400, 600: light source module 210: light source D1: First direction D2: second direction D3: Third party DF: diffuser LE: Light-emitting element P: pitch PM: 稜鏡片 RE: reflector SE: Glossy surface SB: bottom SI: Light incident surface SS1: First side surface SS2: Second side surface SS3: Third side surface

圖1是本發明一實施例的一種光源模組的架構示意圖。圖2是圖1的光源模組的側視示意圖。圖3是本發明一實施例的另一種光源模組的側視示意圖。圖4是本發明一實施例的又一種光源模組的側視示意圖。圖5至圖6B是本發明一實施例的不同導光板的板體的示意圖。 FIG. 1 is a schematic structural diagram of a light source module according to an embodiment of the invention. Fig. 2 is a schematic side view of the light source module of Fig. 1. 3 is a schematic side view of another light source module according to an embodiment of the invention. 4 is a schematic side view of another light source module according to an embodiment of the present invention. 5 to 6B are schematic diagrams of plates of different light guide plates according to an embodiment of the present invention.

100:導光板 100: light guide plate

110:板體 110: Board body

120:第一條狀微結構 120: The first strip-like microstructure

130:第二條狀微結構 130: second strip-like microstructure

140:第三條狀微結構 140: The third strip-like microstructure

200:光源模組 200: light source module

210:光源 210: light source

D1:第一方向 D1: First direction

D2:第二方向 D2: second direction

D3:第三方向 D3: Third party

LE:發光元件 LE: Light-emitting element

SE:出光面 SE: Glossy surface

SB:底面 SB: bottom

SI:入光面 SI: Light incident surface

SS1:第一側表面 SS1: First side surface

SS2:第二側表面 SS2: Second side surface

SS3:第三側表面 SS3: Third side surface

Claims

一種導光板，包括：一板體，具有一出光面、一底面、一入光面、一第一側表面、一第二側表面以及一第三側表面，其中該底面與該出光面相對，該入光面連接該底面與該出光面，該第一側表面與該第三側表面相對，該第二側表面與該入光面相對，該板體的材質包含玻璃，且該板體的該出光面、該底面、該入光面、第一側表面、該第二側表面以及該第三側表面的至少其中一者經化學處理而被強化後具有一強化深度，且位於該強化深度中的該板體的部分的折射率介於1.40至1.90；多個第一條狀微結構，位於該出光面以及該底面的其中一者上，其中該些第一條狀微結構沿一第一方向排列；以及多個第二條狀微結構，位於該入光面上，其中該些第二條狀微結構沿一第二方向排列。 A light guide plate includes: a plate body with a light emitting surface, a bottom surface, a light incident surface, a first side surface, a second side surface, and a third side surface, wherein the bottom surface is opposite to the light emitting surface, The light incident surface is connected to the bottom surface and the light exit surface, the first side surface is opposite to the third side surface, and the second side surface is opposite to the light incident surface. The material of the plate includes glass, and the plate At least one of the light-emitting surface, the bottom surface, the light-incident surface, the first side surface, the second side surface, and the third side surface is chemically treated to have a strengthening depth and is located at the strengthening depth The refractive index of the part of the plate in the middle is between 1.40 and 1.90; a plurality of first strip-shaped microstructures are located on one of the light-emitting surface and the bottom surface, and the first strip-shaped microstructures are along a first Arranged in one direction; and a plurality of second strip-shaped microstructures are located on the light incident surface, wherein the second strip-shaped microstructures are arranged along a second direction.

如申請專利範圍第1項所述的導光板，其中該第一方向與該第二方向彼此平行或彼此垂直。 According to the light guide plate described in item 1 of the scope of the patent application, the first direction and the second direction are parallel or perpendicular to each other.

如申請專利範圍第2項所述的導光板，更包括：多個第三條狀微結構，位於該出光面以及該底面的另一者上，其中該些第三條狀微結構沿一第三方向排列，該第三方向實質上垂直於該第一方向。 The light guide plate described in item 2 of the scope of the patent application further includes: a plurality of third strip-shaped microstructures located on the other of the light-emitting surface and the bottom surface, wherein the third strip-shaped microstructures are along a first Arranged in three directions, the third direction is substantially perpendicular to the first direction.

如申請專利範圍第3項所述的導光板，其中該些第一條狀微結構的延伸方向與該些第三條狀微結構的延伸方向彼此歪斜。 According to the light guide plate described in item 3 of the scope of patent application, the extending direction of the first strip-shaped microstructures and the extending direction of the third strip-shaped microstructures are skewed to each other.

如申請專利範圍第3項所述的導光板，其中該些第一條狀微結構的截面、第二條狀微結構的截面以及第三條狀微結構的截面分別為柱狀或角錐狀。 For the light guide plate described in item 3 of the scope of patent application, the cross-section of the first strip-shaped microstructure, the cross-section of the second strip-shaped microstructure, and the cross-section of the third strip-shaped microstructure are columnar or pyramid-shaped, respectively.

如申請專利範圍第1項所述的導光板，更包括：多個導光微結構，位於該板體的內部，且該些導光微結構與該底面之間具有一間距。 As described in the first item of the scope of patent application, the light guide plate further includes a plurality of light guide microstructures located inside the plate body, and there is a distance between the light guide microstructures and the bottom surface.

如申請專利範圍第1項所述的導光板，其中該第一側表面與該第三側表面為曲面。 According to the light guide plate described in item 1 of the scope of patent application, the first side surface and the third side surface are curved surfaces.

如申請專利範圍第1項所述的導光板，其中該出光面與該底面為曲面，且該入光面與該第二側表面連接於該出光面與該底面的邊為曲線。 According to the light guide plate described in item 1 of the scope of patent application, the light exit surface and the bottom surface are curved surfaces, and the light entrance surface and the second side surface connected to the light exit surface and the bottom surface are curved.

如申請專利範圍第1項所述的導光板，其中該出光面與該底面為曲面，且該第一側表面與該第三側表面連接於該出光面與該底面的邊為曲線。 According to the light guide plate described in item 1 of the scope of patent application, the light exit surface and the bottom surface are curved surfaces, and the sides of the first side surface and the third side surface connected to the light exit surface and the bottom surface are curved.

一種光源模組，包括：一導光板，包括：板體，具有一出光面、一底面、一入光面、一第一側表面、一第二側表面以及一第三側表面，其中該底面與該出光面相對，且該入光面連接該底面與該出光面，該第一側表面與該第三側表面相對，該第二側表面與該入光面相對，該板體的材質包含玻璃，且該板體的該出光面、該底面、該入光面、第一側表面、該第二側表面以及該第三側表面的至少其中一者經化學處理而被強化後具有一強化深度，且位於該強化深度中的該板體的部分的折射率介於1.40至1.90；多個第一條狀微結構，位於該出光面以及該底面的其中一者上，其中該些第一條狀微結構沿一第一方向排列；以及多個第二條狀微結構，位於該入光面上，其中該些第二條狀微結構沿一第二方向排列；以及一光源，配置在該入光面旁，其中該光源具有多個發光元件，該些發光元件對應於該些第二條狀微結構排列，且該些發光元件的排列方向平行於該第二方向。 A light source module includes: a light guide plate, including: a plate body with a light-emitting surface, a bottom surface, a light-incident surface, a first side surface, a second side surface, and a third side surface, wherein the bottom surface Opposite to the light-emitting surface, and the light-incident surface connects the bottom surface and the light-emitting surface, the first side surface Opposite to the third side surface, the second side surface is opposite to the light incident surface, the material of the plate includes glass, and the light exit surface, the bottom surface, the light incident surface, the first side surface, At least one of the second side surface and the third side surface is strengthened by chemical treatment to have a strengthening depth, and the refractive index of the part of the plate located in the strengthening depth is between 1.40 and 1.90; more A first strip-shaped microstructure is located on one of the light-emitting surface and the bottom surface, wherein the first strip-shaped microstructures are arranged along a first direction; and a plurality of second strip-shaped microstructures are located on the entrance On the light surface, the second strip-shaped microstructures are arranged along a second direction; and a light source is arranged beside the light incident surface, wherein the light source has a plurality of light-emitting elements, and the light-emitting elements correspond to the first The two strip-shaped microstructures are arranged, and the arrangement direction of the light-emitting elements is parallel to the second direction.

如申請專利範圍第10項所述的光源模組，其中該第一方向與該第二方向彼此平行或彼此垂直。 According to the light source module described in claim 10, the first direction and the second direction are parallel or perpendicular to each other.

如申請專利範圍第10項所述的光源模組，其中該導光板更包括多個第三條狀微結構，位於該出光面以及該底面的另一者上，其中該些第三條狀微結構沿一第三方向排列，該第三方向實質上垂直於該第一方向。 The light source module according to claim 10, wherein the light guide plate further includes a plurality of third strip-shaped microstructures located on the other of the light emitting surface and the bottom surface, wherein the third strip-shaped microstructures The structures are arranged along a third direction, the third direction being substantially perpendicular to the first direction.

如申請專利範圍第12項所述的光源模組，其中該些第一條狀微結構的延伸方向與該些第三條狀微結構的延伸方向彼此歪斜。 According to the light source module described in item 12 of the scope of patent application, the extending direction of the first strip-shaped microstructures and the extending direction of the third strip-shaped microstructures are skewed to each other.

如申請專利範圍第12項所述的光源模組，其中該些第一條狀微結構的截面、第二條狀微結構的截面以及第三條狀微結構的截面分別為柱狀或角錐狀。 The light source module described in item 12 of the scope of patent application, wherein the cross-sections of the first strip-shaped microstructures, the cross-sections of the second strip-shaped microstructures, and the cross-sections of the third strip-shaped microstructures are columnar or pyramid-shaped, respectively .

如申請專利範圍第10項所述的光源模組，其中該導光板更包括多個導光微結構，位於該板體的內部，且該些導光微結構與該底面之間具有一間距。 According to the light source module of claim 10, the light guide plate further includes a plurality of light guide microstructures located inside the board, and there is a distance between the light guide microstructures and the bottom surface.

如申請專利範圍第10項所述的光源模組，其中該第一側表面與該第三側表面為曲面。 According to the light source module of claim 10, the first side surface and the third side surface are curved surfaces.

如申請專利範圍第10項所述的光源模組，其中該出光面與該底面為曲面，且該入光面與該第二側表面連接於該出光面與該底面的邊為曲線。 The light source module according to claim 10, wherein the light-emitting surface and the bottom surface are curved surfaces, and the sides of the light-incident surface and the second side surface connected to the light-emitting surface and the bottom surface are curved.

如申請專利範圍第10項所述的光源模組，其中該出光面與該底面為曲面，且該第一側表面與該第三側表面連接於該出光面與該底面的邊為曲線。 The light source module according to claim 10, wherein the light emitting surface and the bottom surface are curved surfaces, and the edges of the first side surface and the third side surface connected to the light emitting surface and the bottom surface are curved lines.