TWI467253B - Front-light module and light source modulation apparatus thereof - Google Patents
Front-light module and light source modulation apparatus thereof Download PDFInfo
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Description
本發明是有關於一種前光模組，且特別是有關於一種前光模組及其光源調制裝置。The invention relates to a front light module, and in particular to a front light module and a light source modulating device thereof.
目前的電子書主要係採用反射式顯示面板，強調在自然光的環境下即能輕鬆進行閱讀。然而，採用反射式顯示面板會使得電子書十分依賴外界光源，一旦進到外界光源較弱的環境中，反射式電子書即無法清楚地顯示畫面。為了解決這樣的問題，可將一前光模組設置於反射式顯示面板的顯示面前方，以在外界光源不足時，提供反射式電子書光線，以利顯示畫面。The current e-books mainly use reflective display panels, which emphasize reading in a natural light environment. However, the use of a reflective display panel makes the e-book very dependent on the external light source, and once it enters a weak environment, the reflective e-book cannot clearly display the image. In order to solve such a problem, a front light module can be disposed in front of the display surface of the reflective display panel to provide reflective e-book light when the external light source is insufficient to facilitate display of the image.
一般的前光模組可包含複數光源及一導光板。然而，導光板雖可幫助引導光線，卻也因為光線在導光板內發生全反射的現象，導致出光效率下降。為了克服全反射的問題，部分廠商遂發展出以下兩種態樣的導光板。A general front light module can include a plurality of light sources and a light guide plate. However, although the light guide plate can help guide the light, it also causes total light reflection in the light guide plate, resulting in a decrease in light extraction efficiency. In order to overcome the problem of total reflection, some manufacturers have developed the following two kinds of light guide plates.
第一種態樣係在導光板上設置許多點狀式(dot)微結構，以散射的方式破壞全反射的現象，但是，這種態樣的導光板存在訊雜比(S/N ratio)過低的問題。第二種態樣係在導光板的表面上切出複數道V型切槽，其係以鏡面反射的方式來改變導光板內的光線角度，從而破壞全反射。In the first aspect, a plurality of dot microstructures are disposed on the light guide plate to destroy the total reflection phenomenon by scattering. However, the light guide plate of the state has a signal ratio (S/N ratio). Too low a problem. In the second aspect, a plurality of V-shaped slits are cut out on the surface of the light guide plate, and the angle of the light in the light guide plate is changed by specular reflection to destroy the total reflection.
相較於具有點狀式導光板而言，雖然具有V型切槽之導光板的指向性更高，光場更容易控制。然而，由於光線在V型切槽中反射的方向相當一致，若其光源係如發光二極體之類的點光源，則每一顆發光二極體所發出的光線會 在導光板中呈現條狀影像，而在導光板上產生亮暗相間的條紋。Compared to a dot-type light guide plate, although the directivity of the light guide plate having the V-shaped slit is higher, the light field is more easily controlled. However, since the direction of light reflected in the V-shaped slot is quite uniform, if the light source is a point source such as a light-emitting diode, the light emitted by each of the light-emitting diodes will A strip image is presented in the light guide plate, and bright and dark stripes are produced on the light guide plate.
有鑑於此，本發明之一技術態樣係在於提供一種光源調制裝置，其目的係將前光模組中多個點光源整合為一能量分佈均勻與放射方向亂度均勻的光源，以消除導光板上的條狀影像及亮暗紋。In view of the above, one aspect of the present invention provides a light source modulating device, which aims to integrate a plurality of point light sources in a front light module into a light source with uniform energy distribution and uniformity of radiation direction to eliminate the guide. Strip image on the light board and bright and dark lines.
為了達到上述目的，依據本發明之一實施方式，一種光源調制裝置包含一本體以及複數勻光微結構。本體具有一入光面以及一出光面。入光面用以接收至少一點光源之光線。出光面相對於入光面。勻光微結構設置於本體之出光面上，其中每一勻光微結構係呈弧面狀。In order to achieve the above object, according to an embodiment of the present invention, a light source modulating device includes a body and a plurality of uniform light microstructures. The body has a light entrance surface and a light exit surface. The light entrance surface is for receiving light of at least one light source. The light exiting surface is opposite to the light incident surface. The uniform light microstructure is disposed on the light emitting surface of the body, wherein each of the light homogenizing microstructures is curved.
於本發明之一或多個實施方式中，勻光微結構沿著本體之長度方向連續地鄰接。In one or more embodiments of the invention, the homogenized microstructures are contiguously continuous along the length of the body.
於本發明之一或多個實施方式中，勻光微結構共同覆蓋該本體之出光面之整體。In one or more embodiments of the present invention, the light-homogenizing microstructures collectively cover the entirety of the light-emitting surface of the body.
於本發明之一或多個實施方式中，勻光微結構由本體之出光面向外凸起。In one or more embodiments of the invention, the light-homogenizing microstructure is convexly outwardly directed from the light exiting surface of the body.
於本發明之一或多個實施方式中，勻光微結構由本體之出光面向內凹陷。In one or more embodiments of the invention, the homogenized microstructure is recessed inwardly from the light exiting surface of the body.
於本發明之一或多個實施方式中，光源調制裝置可進一步包含複數光學擴散微結構，其係設置於本體之入光面，用以擴大點光源之放射範圍。In one or more embodiments of the present invention, the light source modulating device may further include a plurality of optical diffusing microstructures disposed on the light incident surface of the body to expand the radiation range of the point light source.
於本發明之一或多個實施方式中，本體可包含一第一 子本體以及一第二子本體。第二子本體係與第一子本體相分隔。入光面係位於第一子本體上相對第二子本體之一側，出光面係位於第二子本體上相對第一子本體之一側。In one or more embodiments of the present invention, the body may include a first a sub-body and a second sub-body. The second sub-system is separated from the first sub-body. The light incident surface is located on one side of the first sub-body opposite to the second sub-body, and the light-emitting surface is located on one side of the second sub-body opposite to the first sub-body.
本發明之另一技術態樣係在於提供一種前光模組。於一實施方式中，前光模組可包含至少一點光源、一光源調制裝置以及一導光板。光源調制裝置至少包含一本體以及複數勻光微結構。本體具有一入光面以及一出光面。點光源設置於入光面旁，而出光面相對入光面，且導光板面對出光面。勻光微結構係設置於本體之出光面上，其中每一勻光微結構係呈弧面狀。Another aspect of the present invention is to provide a front light module. In an embodiment, the front light module may include at least one light source, a light source modulation device, and a light guide plate. The light source modulating device comprises at least one body and a plurality of uniform light microstructures. The body has a light entrance surface and a light exit surface. The point light source is disposed beside the light incident surface, and the light emitting surface is opposite to the light incident surface, and the light guide plate faces the light emitting surface. The uniform light microstructure is disposed on the light emitting surface of the body, wherein each of the light homogenizing microstructures is curved.
於本發明之一或多個實施方式中，導光板包含複數切槽設置於導光板的表面。In one or more embodiments of the present invention, the light guide plate includes a plurality of slits disposed on a surface of the light guide plate.
於本發明之一或多個實施方式中，點光源為複數個並沿著光源調制裝置之本體之長度方向排列。In one or more embodiments of the present invention, the point sources are plural and arranged along the length of the body of the light source modulation device.
於本發明上述實施方式中，光源調制裝置可利用出光面上的多個勻光微結構將光線打散，除了可分散能量的分佈，亦可使光線的放射方向更均勻。因此，若由光源調制裝置的出光面觀之，則可看到整面均勻分佈的光，即使前光模組的導光板具有V型切槽，亦不會產生條狀影像或亮暗紋的現象。In the above embodiment of the present invention, the light source modulating device can use the plurality of uniform light microstructures on the light-emitting surface to break up the light, and in addition to the distribution of the dispersible energy, the radiation direction of the light can be made more uniform. Therefore, if the light-emitting surface of the light source modulating device is viewed, the light uniformly distributed over the entire surface can be seen. Even if the light guide plate of the front light module has a V-shaped slit, no strip image or bright and dark lines are generated. phenomenon.
以上所述僅係用以闡述本發明所欲解決的問題、解決問題的技術手段、及其產生的功效等等，本發明之具體細節將在下文的實施方式及相關圖式中詳細介紹。The above description is only for explaining the problems to be solved by the present invention, the technical means for solving the problems, the effects thereof, and the like, and the specific details of the present invention will be described in detail in the following embodiments and related drawings.
以下將以圖式揭露本發明之複數實施方式，為明確說明起見，許多實務上的細節將在以下敘述中一併說明。然而，熟悉本領域之技術人員應當瞭解到，在本發明部分實施方式中，這些實務上的細節並非必要的，因此不應用以限制本發明。此外，為簡化圖式起見，一些習知慣用的結構與元件在圖式中將以簡單示意的方式繪示之。The embodiments of the present invention are disclosed in the following drawings, and for the purpose of clarity However, it should be understood by those skilled in the art that the details of the invention are not essential to the details of the invention. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.
第1圖繪示依據本發明一實施方式之光源調制裝置10之立體圖。如圖所示，本實施方式之光源調制裝置10可包含一本體100以及複數勻光微結構200。本體100具有一入光面110以及一出光面120。出光面120相對於入光面110。勻光微結構200設置於本體100之出光面120上，其中每一勻光微結構200係呈弧面狀。1 is a perspective view of a light source modulating device 10 according to an embodiment of the present invention. As shown in the figure, the light source modulation device 10 of the present embodiment may include a body 100 and a plurality of light homogenizing microstructures 200. The body 100 has a light incident surface 110 and a light exit surface 120. The light exit surface 120 is opposite to the light incident surface 110. The light homogenizing microstructures 200 are disposed on the light emitting surface 120 of the body 100, wherein each of the light homogenizing microstructures 200 is curved.
第2圖繪示第1圖之光源調制裝置10之光路圖。於本圖中，入光面110可用以接收至少一點光源400之光線，此光線會在本體100中前進而抵達出光面120，由於出光面120上的勻光微結構200呈弧面狀，故可使光線的能量及放射方向均勻地分散。Fig. 2 is a view showing the optical path of the light source modulation device 10 of Fig. 1. In the figure, the light incident surface 110 can be used to receive at least one light source 400, and the light will advance in the body 100 to reach the light exit surface 120. Since the uniform light microstructure 200 on the light exit surface 120 is curved, The energy and radiation direction of the light can be evenly dispersed.
具體來說，如第2圖中的局部區域A所示，由於勻光微結構200係呈弧面狀，故其表面沿著圖中y方向所分佈的位置之法線方向彼此不同，與光線所夾的入射角亦會因而改變。因此，從勻光微結構200不同位置上所射出的光線a1、a2、a3、a4、a5及a6會朝向不同的方向放射，從而分散光線a1、a2、a3、a4、a5及a6之方向，使其非僅朝著特定方向前進。舉例來說，於局部區域A中，光線a1及a3係朝左側放射，而光線a2、a4、a5及a6係朝右側放 射，相似地，於局部區域B及局部區域C中，亦均有部分朝左側放射的光線及部分朝右側放射的光線。由於出光面120上沿著y方向的每個位置均可穿透出許多不同方向的光線，從而增加各個位置上光線方向的亂度。故若由出光面120觀之，則可看到整面均勻分佈的光，而非多顆分開的點光源400。因此，勻光微結構200可將多顆排列之點光源400轉換為能量分佈與方向亂度均勻的線光源或面光源。Specifically, as shown in the partial area A in FIG. 2, since the uniform light-emitting microstructures 200 are curved, the normal directions of the surfaces along the y-direction of the figure are different from each other, and the light rays are different from each other. The angle of incidence of the clip will also change accordingly. Therefore, the light rays a1, a2, a3, a4, a5, and a6 emitted from different positions of the uniform light microstructure 200 are radiated in different directions, thereby dispersing the directions of the lights a1, a2, a3, a4, a5, and a6. Make it not just move in a specific direction. For example, in the local area A, the rays a1 and a3 are radiated toward the left side, and the rays a2, a4, a5, and a6 are placed toward the right side. Similarly, in the local area B and the partial area C, there are also some rays radiating toward the left side and some rays radiating toward the right side. Since each position along the y-direction on the light-emitting surface 120 can penetrate many different directions of light, thereby increasing the disorder of the light direction at each position. Therefore, if viewed by the light-emitting surface 120, the light uniformly distributed over the entire surface can be seen instead of the plurality of separate point light sources 400. Therefore, the uniform light microstructure 200 can convert the plurality of arranged point light sources 400 into a line source or a surface light source with uniform energy distribution and uniformity of direction.
請回頭參閱第1圖，勻光微結構200可沿著本體100之長度方向連續地鄰接。具體來說，本體100之長度方向係平行於第1圖中所示的y方向，而勻光微結構200之係大致上沿著y方向所連續地鄰接。Referring back to FIG. 1, the homogenized microstructures 200 can be continuously adjacent along the length of the body 100. Specifically, the length direction of the body 100 is parallel to the y direction shown in FIG. 1, and the lines of the uniform light microstructures 200 are contiguously continuous along the y direction.
應瞭解到，本說明書全文中所述之『連續地鄰接』係代表兩相鄰之結構係直接連接而無間隙，例如第1圖所示之兩相鄰的勻光微結構200係為兩鄰接的弧面，而在兩個相鄰的勻光微結構200之間則無存在任何平面。由於這些勻光微結構200係連續地鄰接，而無任何平面形成於其中，故出光面120上沿著y方向的位置之法線方向係不斷地改變，從而幫助打散光線的方向。It should be understood that the term "continuously adjacent" as used throughout the specification means that two adjacent structures are directly connected without gaps. For example, two adjacent uniformed microstructures 200 shown in FIG. 1 are two adjacent There is no plane between the two adjacent uniform light microstructures 200. Since the uniform light-emitting microstructures 200 are continuously adjacent without any plane formed therein, the normal direction of the position along the y-direction on the light-emitting surface 120 is constantly changed, thereby helping to break the direction of the light.
於部分實施方式中，勻光微結構200共同覆蓋本體100之出光面120之整體。換句話說，勻光微結構200係佈滿於本體100之出光面120，使得出光面120上均呈連續鄰接的弧面而無平面。In some embodiments, the light-homogenizing microstructures 200 collectively cover the entirety of the light-emitting surface 120 of the body 100. In other words, the light-homing microstructures 200 are covered on the light-emitting surface 120 of the body 100 such that the light-emitting surfaces 120 are continuously adjacent to each other without a plane.
第3圖繪示第1圖之光源調制裝置10之局部俯視圖。如圖所示，勻光微結構200係由本體100之出光面120向 外凸起。具體來說，勻光微結構200為凸出於出光面120之凸弧面，另外，相鄰兩勻光微結構200係以一接合部500相連接，此接合部500係為相鄰兩勻光微結構200之交界處的曲率轉折線。勻光微結構200可藉由接合部500連續地鄰接。Fig. 3 is a partial plan view showing the light source modulating device 10 of Fig. 1. As shown, the uniform light microstructure 200 is directed by the light exit surface 120 of the body 100. Outer protrusion. Specifically, the uniform light micro-structure 200 is a convex curved surface protruding from the light-emitting surface 120. In addition, the adjacent two uniform light-transmitting microstructures 200 are connected by a joint portion 500, and the joint portion 500 is adjacent to the two sides. The curvature transition line at the junction of the light microstructures 200. The homogenized microstructures 200 can be contiguously joined by the joints 500.
勻光微結構200具有一曲率半徑R1。相鄰兩勻光微結構200之間具有一節距P1，此節距P1可定義為相鄰兩勻光微結構200由俯視觀之的頂點距離。於部分實施方式中，曲率半徑R1可約為25微米(μm)，節距P1可約為45微米，而本體100之厚度可約為13毫米(mm)，在這樣的尺寸下，勻光微結構200可有效使光線的能量分佈及方向亂度更均勻。應瞭解到，本體100之厚度可定義為入光面110(請併參閱第1圖)與出光面120之間的垂直距離。The homogenized microstructure 200 has a radius of curvature R1. There is a pitch P1 between the adjacent two uniform light micro-structures 200, and the pitch P1 can be defined as the vertex distance of the adjacent two uniform light-microstructures 200 from a top view. In some embodiments, the radius of curvature R1 can be about 25 micrometers (μm), the pitch P1 can be about 45 micrometers, and the thickness of the body 100 can be about 13 millimeters (mm). Under such a size, the uniform light micro The structure 200 can effectively make the energy distribution and direction of the light more uniform. It should be understood that the thickness of the body 100 can be defined as the vertical distance between the light incident surface 110 (please refer to FIG. 1 ) and the light exit surface 120 .
第4圖繪示依據本發明另一實施方式之光源調制裝置10之局部俯視圖。本實施方式與第3圖相似，主要差異在於本實施方式之勻光微結構210與第3圖之勻光微結構200不同。於本實施方式中，勻光微結構210係由本體100之出光面120向內凹陷。具體來說，勻光微結構210為凹陷於出光面120之凹弧面，另外，相鄰兩勻光微結構210係以一接合部510相連接，此接合部510係為相鄰兩勻光微結構210之交界處的曲率轉折線。勻光微結構210可藉由接合部510連續地鄰接。4 is a partial plan view of a light source modulating device 10 according to another embodiment of the present invention. This embodiment is similar to FIG. 3, and the main difference is that the homogenized microstructure 210 of the present embodiment is different from the homogenized microstructure 200 of FIG. In the present embodiment, the uniform light microstructure 210 is recessed inward by the light exit surface 120 of the body 100. Specifically, the uniform light micro-structure 210 is a concave curved surface recessed on the light-emitting surface 120. In addition, the adjacent two uniform light-transmitting microstructures 210 are connected by a joint portion 510, and the joint portion 510 is adjacent to two uniform light. The curvature transition line at the junction of the microstructures 210. The homogenized microstructures 210 may be contiguously joined by the joints 510.
勻光微結構210具有一曲率半徑R2。相鄰兩勻光微結構210之間具有一節距P2，此節距P2可定義為相鄰兩勻光微結構210由俯視觀之的頂點距離。於部分實施方式 中，曲率半徑R2可約為25微米，節距P2可約為45微米，而本體100之厚度可約為13毫米，在這樣的尺寸下，勻光微結構210可有效使光線的能量分佈及方向亂度更均勻。The homogenized microstructure 210 has a radius of curvature R2. The adjacent two uniform light microstructures 210 have a pitch P2 between them, and the pitch P2 can be defined as the apex distance of the adjacent two uniform light microstructures 210 from a top view. Partial implementation The radius of curvature R2 can be about 25 microns, the pitch P2 can be about 45 microns, and the thickness of the body 100 can be about 13 millimeters. At such a size, the uniform light microstructure 210 can effectively distribute the energy of the light. The direction is more uniform.
請回頭參閱第1圖，於部分實施方式中，光源調制裝置10可進一步包含複數光學擴散微結構300，其可設置於本體100之入光面110。於本實施方式中，光學擴散微結構300係呈稜柱狀並凸出於本體100之入光面110。具體來說，光學擴散微結構300可包含一第一斜面302以及一第二斜面304，兩者係相交而構成截面為三角形的稜柱。Referring to FIG. 1 , in some embodiments, the light source modulating device 10 may further include a plurality of optical diffusing microstructures 300 , which may be disposed on the light incident surface 110 of the body 100 . In the present embodiment, the optical diffusion microstructures 300 are prismatic and protrude from the light incident surface 110 of the body 100. Specifically, the optical diffusion microstructure 300 can include a first slope 302 and a second slope 304 that intersect to form a prism having a triangular cross section.
於部分實施方式中，光學擴散微結構300係沿著本體100之長度方向間隔地排列。換句話說，光學擴散微結構300之排列方向大致上平行於第1圖所示之y方向。另外，相鄰兩光學擴散微結構300之間具有一間距d，此間距d至少可使得光學擴散微結構300不致於相互連接，以利光學擴散微結構300間隔地排列。應瞭解到，『光學擴散微結構300間隔地排列』之技術特徵可代表任一光學擴散微結構300之第一斜面302與第二斜面304均無連接於其他光學擴散微結構300之第一斜面302或第二斜面304。In some embodiments, the optical diffusion microstructures 300 are spaced apart along the length of the body 100. In other words, the arrangement direction of the optical diffusion microstructures 300 is substantially parallel to the y direction shown in FIG. In addition, the adjacent two optical diffusion microstructures 300 have a spacing d between them, so that the optical diffusion microstructures 300 are at least not connected to each other, so that the optical diffusion microstructures 300 are arranged at intervals. It should be understood that the technical feature of the "optical diffusion microstructures 300 spaced apart" may mean that the first slope 302 and the second slope 304 of any of the optical diffusion microstructures 300 are not connected to the first slope of the other optical diffusion microstructures 300. 302 or second ramp 304.
第5圖繪示依據本發明一實施方式之光學擴散微結構300之光路圖。如圖所示，點光源400可朝本體100之入光面110放射出多道光線，這些光線所涵蓋的範圍為第一光束面D，當第一光束面D中的光線接觸到入光面110上的光學擴散微結構300時，會由於折射率的差異而發生折射，且更會因為光學擴散微結構300的形狀而改變光線的入射角及折射角，使得光線更進一步地向外擴散，而使第 一光束面D擴張為範圍更廣的第二光束面E。具體來說，點光源400的光線會由近到遠地擴散，換言之，即使入光面110上為平坦表面而無任何光學擴散微結構300時，點光源400之光線進入本體100中亦會擴散。但是，由於光學擴散微結構300改變了點光源400之光線進入本體100時的入射角及折射角，故可使光線進一步地向外折射。因此，點光源400所放射之光線除了固有由近到遠的擴散現象以外，光學擴散微結構300可更進一步地擴大其放射範圍。FIG. 5 is a light path diagram of an optical diffusion microstructure 300 in accordance with an embodiment of the present invention. As shown in the figure, the point light source 400 can emit a plurality of rays toward the light incident surface 110 of the body 100. The light covers a range of the first beam surface D, and the light in the first beam surface D contacts the light incident surface. When the optical diffusion microstructure 300 on the 110 is refracted due to the difference in refractive index, and the incident angle and the refraction angle of the light are changed due to the shape of the optical diffusion microstructure 300, the light is further diffused outward. Make the first A beam face D is expanded to a wider range of second beam faces E. Specifically, the light of the point source 400 is diffused from near to far. In other words, even if the light incident surface 110 is a flat surface without any optical diffusion microstructures 300, the light of the point source 400 diffuses into the body 100. However, since the optical diffusion microstructure 300 changes the incident angle and the refraction angle when the light of the point source 400 enters the body 100, the light can be further refracted outward. Therefore, in addition to the inherently near-to-far diffusion phenomenon of the light emitted by the point source 400, the optical diffusion microstructure 300 can further expand its radiation range.
第6圖繪示依據本發明又一實施方式之光源調制裝置10之局部俯視圖。本實施方式之與第1圖之主要差異係在於本實施方式之光學擴散微結構310與第1圖之光學擴散微結構300不同。於本實施方式中，光學擴散微結構310係沿著本體100之長度方向連續地鄰接，且光學擴散微結構310由俯視觀之為梯形而非三角形。FIG. 6 is a partial plan view of a light source modulating device 10 according to still another embodiment of the present invention. The main difference between the present embodiment and the first embodiment is that the optical diffusion microstructure 310 of the present embodiment is different from the optical diffusion microstructure 300 of the first embodiment. In the present embodiment, the optical diffusion microstructures 310 are continuously adjacent along the length direction of the body 100, and the optical diffusion microstructures 310 are trapezoidal in plan view rather than triangular.
具體來說，光學擴散微結構310可包含一第一斜面312及一第二斜面314以及一頂面316。頂面316之兩側分別鄰接第一斜面312與第二斜面314，而共同構成截面為梯形的稜柱。另外，相鄰兩個光學擴散微結構310係以一連接部600相連接，此連接部600係為相鄰兩光學擴散微結構310之交界處的斜率轉折線。光學擴散微結構310可藉由連接部600連續地鄰接。Specifically, the optical diffusion microstructure 310 can include a first slope 312 and a second slope 314 and a top surface 316. The two sides of the top surface 316 respectively adjoin the first inclined surface 312 and the second inclined surface 314, and together constitute a prism having a trapezoidal cross section. In addition, the adjacent two optical diffusion microstructures 310 are connected by a connecting portion 600 which is a slope turning line at the boundary between two adjacent optical diffusion microstructures 310. The optical diffusion microstructures 310 may be contiguously connected by the joints 600.
第7圖繪示依據本發明再一實施方式之光源調制裝置10之局部俯視圖。本實施方式與第6圖之主要差異係在於本實施方式之光學擴散微結構320與第6圖之光學擴散微 結構310不同。於本實施方式中，光學擴散微結構320係呈弧面狀。具體來說，光學擴散微結構320係為本體100向外凸起之凸弧面，另外，相鄰兩個光學擴散微結構320係以一連接部610相連接，此連接部610係為相鄰兩光學擴散微結構320之交界處的曲率轉折線。光學擴散微結構320可藉由連接部610連續地鄰接。FIG. 7 is a partial plan view of a light source modulating device 10 according to still another embodiment of the present invention. The main difference between this embodiment and FIG. 6 is the optical diffusion microstructure 320 of the present embodiment and the optical diffusion micro of FIG. Structure 310 is different. In the present embodiment, the optical diffusion microstructures 320 are curved. Specifically, the optical diffusion microstructures 320 are convex curved surfaces that are outwardly convex from the body 100. In addition, the adjacent two optical diffusion microstructures 320 are connected by a connecting portion 610, and the connecting portions 610 are adjacent to each other. A curvature transition line at the junction of the two optical diffusion microstructures 320. The optical diffusion microstructures 320 may be contiguously connected by the joints 610.
第8圖繪示依據本發明再一實施方式之光源調制裝置10之局部俯視圖。本實施方式與第7圖之主要差異係在於本實施方式之光學擴散微結構330與第7圖之光學擴散微結構320不同。於本實施方式中，光學擴散微結構330係為本體100向內凹陷之凹弧面，另外，相鄰兩個光學擴散微結構330係以一連接部620相連接，此連接部620係為相鄰兩光學擴散微結構330之交界處的曲率轉折線。光學擴散微結構330可藉由連接部620連續地鄰接。FIG. 8 is a partial plan view of a light source modulating device 10 according to still another embodiment of the present invention. The main difference between this embodiment and Fig. 7 is that the optical diffusion microstructure 330 of the present embodiment is different from the optical diffusion microstructure 320 of Fig. 7. In the present embodiment, the optical diffusion microstructure 330 is a concave curved surface in which the body 100 is recessed inward. In addition, the adjacent two optical diffusion microstructures 330 are connected by a connecting portion 620, and the connecting portion 620 is a phase. The curvature transition line at the junction of the adjacent two optical diffusion microstructures 330. The optical diffusion microstructures 330 may be contiguously connected by the joints 620.
第9圖繪示依據本發明再一實施方式之光源調制裝置10之立體圖。如圖所示，於本實施方式中，本體100可包含一第一子本體102以及一第二子本體104。第一子本體102與第二子本體104相分隔。入光面110係位於第一子本體102上相對於第二子本體104之一側。出光面120係位於第二子本體104上相對於第一子本體102之一側。於本實施方式中，第一子本體102可利用入光面110上的光學擴散微結構300來擴大光線放射範圍，而第二子本體104可接收來自第一子本體102之光線，並利用出光面120上的勻光微結構200來打散光線的方向，以使光線能量分佈及方向亂度更均勻。於本實施方式中，第二子本體104係 位於第一子本體102的正後方，以接收光線。FIG. 9 is a perspective view of a light source modulating device 10 according to still another embodiment of the present invention. As shown in the figure, in the embodiment, the body 100 can include a first sub-body 102 and a second sub-body 104. The first sub-body 102 is separated from the second sub-body 104. The light incident surface 110 is located on one side of the first sub-body 102 relative to the second sub-body 104. The light-emitting surface 120 is located on one side of the second sub-body 104 relative to the first sub-body 102. In the present embodiment, the first sub-body 102 can utilize the optical diffusion microstructures 300 on the light-incident surface 110 to expand the range of light emission, and the second sub-body 104 can receive the light from the first sub-body 102 and utilize the light. The uniform light microstructures 200 on the face 120 dissipate the direction of the light to make the light energy distribution and direction disorder more uniform. In this embodiment, the second sub-body 104 is Located directly behind the first sub-body 102 to receive light.
第10圖繪示依據本發明一實施方式之前光模組之立體圖。如圖所示，本實施方式之前光模組可包含至少一點光源400、一光源調制裝置10以及一導光板700。光源調制裝置10至少包含一本體100以及複數勻光微結構200。本體100具有一入光面110以及一出光面120。點光源400設置於入光面110旁，而出光面120相對於入光面110。導光板700面對於出光面120。勻光微結構200係設置於本體100之出光面120上，其中每一勻光微結構200係呈弧面狀。FIG. 10 is a perspective view of a light module according to an embodiment of the present invention. As shown in the figure, the optical module of the present embodiment may include at least one light source 400, a light source modulation device 10, and a light guide plate 700. The light source modulation device 10 includes at least a body 100 and a plurality of light homogenizing microstructures 200. The body 100 has a light incident surface 110 and a light exit surface 120. The point light source 400 is disposed beside the light incident surface 110, and the light exit surface 120 is opposite to the light incident surface 110. The light guide plate 700 faces the light exit surface 120. The light homogenizing microstructures 200 are disposed on the light emitting surface 120 of the body 100, wherein each of the light homogenizing microstructures 200 is curved.
如前文中關於第2圖之光路的描述，由於勻光微結構200係呈弧面狀，故可使來自點光源400之光線的能量及放射方向均勻地分散。因此，若由光源調制裝置10的出光面120觀之，則可看到整面均勻分佈的光，而非多顆分開的點光源400。換句話說，勻光微結構200可將多顆沿著本體100長度方向所排列之點光源400轉換為能量分佈與方向亂度均勻的線光源或面光源。即使導光板700之表面704設置有複數切槽702，亦不會產生條狀影像或亮暗紋的現象。As described above with respect to the optical path of Fig. 2, since the uniform light microstructure 200 is curved, the energy and the radiation direction of the light from the point light source 400 can be uniformly dispersed. Therefore, if viewed by the light-emitting surface 120 of the light source modulating device 10, light uniformly distributed over the entire surface can be seen instead of a plurality of separate point light sources 400. In other words, the uniform light microstructure 200 can convert a plurality of point light sources 400 arranged along the length direction of the body 100 into line sources or surface light sources with uniform energy distribution and uniformity of direction. Even if the surface 704 of the light guide plate 700 is provided with a plurality of slits 702, no strip image or bright streaks are generated.
於部分實施方式中，點光源400可為發光二極體，但不以此為限。於部分實施方式中，光源調制裝置10可為折射率約介於1.4至1.6之間的透光體。於部分實施方式中，光源調制裝置10可由透光塑料或玻璃所形成，其中透光塑料可為聚甲基丙烯酸酯(Polymethylmethacrylate,PMMA)或是聚碳酸酯(Polycarbonate,PC)，但不以此為限。於部分實 施方式中，切槽702可為V型槽，但不以此為限。In some embodiments, the point light source 400 can be a light emitting diode, but is not limited thereto. In some embodiments, the light source modulating device 10 can be a light transmitting body having a refractive index of between about 1.4 and 1.6. In some embodiments, the light source modulating device 10 may be formed of light-transmissive plastic or glass, wherein the light-transmitting plastic may be polymethylmethacrylate (PMMA) or polycarbonate (PC), but not Limited. Partially In the embodiment, the slot 702 can be a V-shaped slot, but is not limited thereto.
第11圖繪示依據本發明一實施方式之顯示裝置之立體圖。如圖所示，本實施方式之顯示裝置可包含一點光源400、一光源調制裝置10、一導光板700以及一反射式顯示面板800。導光板700係位於反射式顯示面板800之顯示面上方，以提供反射式顯示面板800光線，從而可幫助反射式顯示面板800在外界光線不足時仍能順利顯示畫面。於部分實施方式中，反射式顯示面板800可為液晶顯示器(Liquid Crystal Display,LCD)或是電泳顯示器(Electro Phoretic Display,EPD)，但不以此為限。11 is a perspective view of a display device according to an embodiment of the present invention. As shown in the figure, the display device of the present embodiment may include a point light source 400, a light source modulation device 10, a light guide plate 700, and a reflective display panel 800. The light guide plate 700 is located above the display surface of the reflective display panel 800 to provide the reflective display panel 800 light, thereby helping the reflective display panel 800 to smoothly display the image when the ambient light is insufficient. In some embodiments, the reflective display panel 800 can be a liquid crystal display (LCD) or an electrophoretic display (EPD), but is not limited thereto.
應瞭解到，本說明書全文中關於第一特徵設置於第二特徵的上方或是第二特徵上的敘述，應包含了第一特徵與第二特徵兩者係直接接觸，以及第一特徵與第二特徵之間具有額外特徵而使第一特徵與第二特徵並非直接接觸形成等實施方式。It should be understood that the description throughout the specification that the first feature is disposed above or the second feature of the second feature should include direct contact between the first feature and the second feature, and the first feature and the first feature. Embodiments in which there are additional features between the two features such that the first feature and the second feature are not in direct contact formation.
雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.
10‧‧‧光源調制裝置10‧‧‧Light source modulation device
100‧‧‧本體100‧‧‧ body
102‧‧‧第一子本體102‧‧‧First sub-ontology
104‧‧‧第二子本體104‧‧‧Second sub-ontology
110‧‧‧入光面110‧‧‧Into the glossy surface
120‧‧‧出光面120‧‧‧Glossy
200,210‧‧‧勻光微結構200,210‧‧‧Homogeneous microstructure
300,310,320,330‧‧‧光學擴散微結構300,310,320,330‧‧‧Optical diffusion microstructure
302,312‧‧‧第一斜面302, 312‧‧‧ first slope
304,314‧‧‧第二斜面304,314‧‧‧second slope
316‧‧‧頂面316‧‧‧ top surface
400‧‧‧點光源400‧‧‧ point light source
500,510‧‧‧接合部500, 510 ‧ ‧ joints
600,610,620‧‧‧連接部600,610,620‧‧‧Connecting Department
700‧‧‧導光板700‧‧‧Light guide plate
702‧‧‧切槽702‧‧‧ slotting
704‧‧‧表面704‧‧‧ surface
800‧‧‧反射式顯示面板800‧‧‧reflective display panel
A,B,C‧‧‧局部區域A, B, C‧‧‧ local area
a1,a2,a3,a4,a5,a6‧‧‧光線A1, a2, a3, a4, a5, a6‧‧‧ rays
d‧‧‧間距D‧‧‧ spacing
D‧‧‧第一光束面D‧‧‧First beam surface
E‧‧‧第二光束面E‧‧‧second beam surface
R1,R2‧‧‧曲率半徑R1, R2‧‧‧ radius of curvature
P1,P2‧‧‧節距P1, P2‧‧ ‧ pitch
為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：第1圖繪示依據本發明一實施方式之光源調制裝置之立體圖； 第2圖繪示第1圖之光源調制裝置之光路圖；第3圖繪示第1圖之光源調制裝置之局部俯視圖；第4圖繪示依據本發明另一實施方式之光源調制裝置之局部俯視圖；第5圖繪示依據本發明一實施方式之光學擴散微結構之光路圖；第6圖繪示依據本發明又一實施方式之光源調制裝置之局部俯視圖；第7圖繪示依據本發明再一實施方式之光源調制裝置之局部俯視圖；第8圖繪示依據本發明再一實施方式之光源調制裝置之局部俯視圖；第9圖繪示依據本發明再一實施方式之光源調制裝置之立體圖；第10圖繪示依據本發明一實施方式之前光模組之立體圖；第11圖繪示依據本發明一實施方式之顯示裝置之立體圖。The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; 2 is a partial plan view of the light source modulating device of FIG. 1 , FIG. 3 is a partial plan view of the light source modulating device of FIG. 1 , and FIG. 4 is a partial view of the light source modulating device according to another embodiment of the present invention; FIG. 5 is a partial plan view of a light source modulating device according to another embodiment of the present invention; FIG. 7 is a partial plan view of a light source modulating device according to another embodiment of the present invention; A partial plan view of a light source modulating device according to still another embodiment; FIG. 8 is a partial plan view of a light source modulating device according to still another embodiment of the present invention; and FIG. 9 is a perspective view of a light source modulating device according to still another embodiment of the present invention; 10 is a perspective view of a light module according to an embodiment of the present invention; and FIG. 11 is a perspective view of a display device according to an embodiment of the present invention.
10‧‧‧光源調制裝置10‧‧‧Light source modulation device
100‧‧‧本體100‧‧‧ body
110‧‧‧入光面110‧‧‧Into the glossy surface
120‧‧‧出光面120‧‧‧Glossy
200‧‧‧勻光微結構200‧‧‧Homogeneous microstructure
300‧‧‧光學擴散微結構300‧‧‧Optical diffusion microstructure
302‧‧‧第一斜面302‧‧‧First slope
304‧‧‧第二斜面304‧‧‧second slope
d‧‧‧間距D‧‧‧ spacing
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100120418A CN103363440A (en) | 2012-04-03 | 2013-01-14 | Front light module and light source modulation device thereof |
| US13/749,709 US20130258705A1 (en) | 2012-04-03 | 2013-01-25 | Front-light module and light source modulation apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261619432P | 2012-04-03 | 2012-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201341865A TW201341865A (en) | 2013-10-16 |
| TWI467253B true TWI467253B (en) | 2015-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101137158A TWI467253B (en) | 2012-04-03 | 2012-10-08 | Front-light module and light source modulation apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI467253B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI705281B (en) * | 2019-04-08 | 2020-09-21 | 立景光電股份有限公司 | Front-lit display |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI611136B (en) * | 2017-08-01 | 2018-01-11 | 茂林光電科技股份有限公司 | Light source adjustment structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM277949U (en) * | 2005-04-29 | 2005-10-11 | Innolux Display Corp | Backlight module |
| TWM292707U (en) * | 2006-01-10 | 2006-06-21 | Taiwan Nano Electro Opt Tech | Improved structure for light guide panel |
| TW200846730A (en) * | 2007-05-17 | 2008-12-01 | Wintek Corp | Light guide plate and backlight module having the same |
| TWM362426U (en) * | 2008-12-09 | 2009-08-01 | Chunghwa Picture Tubes Ltd | Direct type backlight module and light transparent plate for a backlight module |
| TW201028741A (en) * | 2009-01-23 | 2010-08-01 | Chi Lin Technology Co Ltd | Light-diffusing element and backlight module |
| TW201033449A (en) * | 2009-03-06 | 2010-09-16 | xue-zhong Gao | Light screen sheet (II) |
-
2012
- 2012-10-08 TW TW101137158A patent/TWI467253B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM277949U (en) * | 2005-04-29 | 2005-10-11 | Innolux Display Corp | Backlight module |
| TWM292707U (en) * | 2006-01-10 | 2006-06-21 | Taiwan Nano Electro Opt Tech | Improved structure for light guide panel |
| TW200846730A (en) * | 2007-05-17 | 2008-12-01 | Wintek Corp | Light guide plate and backlight module having the same |
| TWM362426U (en) * | 2008-12-09 | 2009-08-01 | Chunghwa Picture Tubes Ltd | Direct type backlight module and light transparent plate for a backlight module |
| TW201028741A (en) * | 2009-01-23 | 2010-08-01 | Chi Lin Technology Co Ltd | Light-diffusing element and backlight module |
| TW201033449A (en) * | 2009-03-06 | 2010-09-16 | xue-zhong Gao | Light screen sheet (II) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI705281B (en) * | 2019-04-08 | 2020-09-21 | 立景光電股份有限公司 | Front-lit display |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201341865A (en) | 2013-10-16 |
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