本發明是有關於一種光學膜片，且特別是有關於一種用於均勻化面光源的光學膜片。This invention relates to an optical film, and more particularly to an optical film for homogenizing a surface source.
液晶顯示器包括液晶顯示面板與背光模組，其中由於液晶顯示面板本身不發光，所以需藉由背光模組提供液晶顯示面板所需的顯示光源。The liquid crystal display includes a liquid crystal display panel and a backlight module. Since the liquid crystal display panel itself does not emit light, the display light source required for the liquid crystal display panel needs to be provided by the backlight module.
圖1是習知一種背光模組的剖面示意圖。請參照圖1，習知背光模組100包括光源110以及導光板120，其中光源110配置於導光板120的入光面122旁，以提供光線至導光板120，而導光板120用以將光線轉換成從出光面124出射的面光源。此外，為了提升面光源的均勻性，導光板120的出光面124上可設置多個光學膜片，這些光學膜片包括下擴散片130、下稜鏡片140、上稜鏡片150以及上擴散片160。下擴散片130先將光線擴散，接著再依序藉由下稜鏡片140與上稜鏡片150對光線進行集光，之後再藉由上擴散片160來調整光路徑，以達到均勻化面光源的目的。1 is a schematic cross-sectional view of a conventional backlight module. Referring to FIG. 1 , the backlight module 100 includes a light source 110 and a light guide plate 120 . The light source 110 is disposed beside the light incident surface 122 of the light guide plate 120 to provide light to the light guide plate 120 , and the light guide plate 120 is used to light the light. It is converted into a surface light source that is emitted from the light exit surface 124. In addition, in order to improve the uniformity of the surface light source, a plurality of optical films may be disposed on the light-emitting surface 124 of the light guide plate 120. The optical films include a lower diffusion sheet 130, a lower gusset 140, an upper gusset 150, and an upper diffusion sheet 160. . The lower diffusion sheet 130 first diffuses the light, and then sequentially collects the light by the lower cymbal sheet 140 and the upper cymbal sheet 150, and then adjusts the light path by the upper diffusion sheet 160 to achieve a uniform surface light source. purpose.
然而，背光模組100所使用的光學膜片之數量過多，不僅導致背光模組100的厚度較厚且重量較重，還需花費許多時間組裝光學膜片，造成背光模組100的生產效率較差。此外，組裝光學膜片時易產生組裝公差，而過多的光學膜片會導致組裝公差的累積，以致於降低面光源的品質。However, the number of optical films used in the backlight module 100 is excessive, which not only causes the thickness of the backlight module 100 to be thicker and heavier, but also takes a lot of time to assemble the optical film, resulting in poor production efficiency of the backlight module 100. . In addition, assembly tolerances are apt to occur when assembling optical films, and excessive optical films can result in accumulation of assembly tolerances, resulting in reduced surface light source quality.
為了改善上述問題，習知技術提出一種複合式的光學膜片，以減少光學膜片的使用量。如圖2所示，光學膜片200包括基材210、擴散層220以及多個稜鏡柱230，其中擴散層220配置於基材210的入光面212，而稜鏡柱230配置於基材210的出光面214。如此，光學膜片200具有擴散及集光的功能，所以能取代一片擴散片及一片稜鏡片。但因擴散層220容易使部分光能量過於分散，導致稜鏡柱230可利用的光能量變少。因此，使用光學膜片200的背光模組，其整體亮度表現較圖1之背光模組100差。In order to improve the above problems, the prior art proposes a composite optical film to reduce the amount of optical film used. As shown in FIG. 2, the optical film 200 includes a substrate 210, a diffusion layer 220, and a plurality of pillars 230. The diffusion layer 220 is disposed on the light incident surface 212 of the substrate 210, and the mast 230 is disposed on the substrate. The light exit surface 214 of 210. Thus, the optical film 200 has the function of diffusing and collecting light, so that it can replace one piece of the diffusion sheet and one piece of the piece. However, since the diffusion layer 220 easily disperses part of the light energy, the light energy available to the mast 230 is reduced. Therefore, the backlight module using the optical film 200 has a lower overall brightness performance than the backlight module 100 of FIG.
本發明提供一種光學膜片，以提高集光效率、光利用效率以及光均勻性。The present invention provides an optical film to improve light collection efficiency, light utilization efficiency, and light uniformity.
為達上述優點，本發明提出一種光學膜片，其包括基材、多個第一集光結構以及多個擴散結構。基材具有相對的入光面與出光面，第一集光結構配置於入光面，每一第一集光結構具有相對的底面與頂角，且底面連接入光面。擴散結構分別配置於這些第一集光結構之間的空隙內。擴散結構緊鄰第一集光結構，每一第一集光結構的頂角與每一擴散結構之遠離基材的底面位於同一平面。To achieve the above advantages, the present invention provides an optical film comprising a substrate, a plurality of first light collecting structures, and a plurality of diffusion structures. The substrate has opposite light incident surfaces and light exit surfaces, and the first light collecting structure is disposed on the light incident surface, and each of the first light collecting structures has opposite bottom and top corners, and the bottom surface is connected to the light surface. The diffusion structures are respectively disposed in the spaces between the first light collecting structures. The diffusion structure is adjacent to the first light collecting structure, and the apex angle of each of the first light collecting structures is in the same plane as the bottom surface of each of the diffusing structures away from the substrate.
在本發明之一實施例中，上述之第一集光結構為三角柱。In an embodiment of the invention, the first light collecting structure is a triangular prism.
在本發明之一實施例中，上述之每一三角柱之頂角的角度範圍介於80度至120度。In an embodiment of the invention, the angle of the apex angle of each of the triangular prisms ranges from 80 degrees to 120 degrees.
在本發明之一實施例中，上述之第一集光結構為半圓柱。In an embodiment of the invention, the first light collecting structure is a semi-cylindrical shape.
在本發明之一實施例中，上述之每一半圓柱之一圓弧面的曲率半徑介於20微米(μm)與30μm之間。In an embodiment of the invention, the radius of curvature of one of the arcuate faces of each of the semi-cylindrical cylinders is between 20 micrometers (μm) and 30 μm.
在本發明之一實施例中，上述之光學膜片更包括多個第二集光結構，配置於出光面，其中第一集光結構與第二集光結構為稜鏡柱。每一第一集光結構具有第一長軸方向，每一第二集光結構具有第二長軸方向，且第一長軸方向平行或垂直第二長軸方向。In an embodiment of the present invention, the optical film further includes a plurality of second light collecting structures disposed on the light emitting surface, wherein the first light collecting structure and the second light collecting structure are masts. Each of the first light collecting structures has a first major axis direction, and each of the second light collecting structures has a second major axis direction, and the first major axis direction is parallel or perpendicular to the second major axis direction.
在本發明之一實施例中，上述之相鄰的第一集光結構之底面係彼此相鄰接，而相鄰的第二集光結構之與出光面連接的底面係彼此相鄰接。In an embodiment of the invention, the bottom surfaces of the adjacent first light collecting structures are adjacent to each other, and the bottom surfaces of the adjacent second light collecting structures connected to the light emitting surface are adjacent to each other.
在本發明之一實施例中，上述之光學膜片更包括保護片，配置於擴散結構之底面。In an embodiment of the invention, the optical film further includes a protective sheet disposed on a bottom surface of the diffusion structure.
在本發明之一實施例中，上述之相鄰的擴散結構的底面彼此相鄰接。In an embodiment of the invention, the bottom surfaces of the adjacent diffusion structures are adjacent to each other.
為達上述優點，本發明另提出一種光學膜片，其包括基材、多個第一集光結構以及多個擴散結構。基材具有相對的入光面與出光面，第一集光結構配置於入光面，且相鄰兩第一集光結構之間存有空隙。擴散結構分別配置於空隙內，其中每一空隙之80%以上的空間被對應的擴散結構所佔據。In order to achieve the above advantages, the present invention further provides an optical film comprising a substrate, a plurality of first light collecting structures, and a plurality of diffusion structures. The substrate has opposite light incident surfaces and light exit surfaces, and the first light collecting structure is disposed on the light incident surface, and a gap exists between the adjacent first light collecting structures. The diffusion structures are respectively disposed in the voids, wherein more than 80% of the space of each void is occupied by the corresponding diffusion structure.
為達上述優點，本發明又提出一種光學膜片，其包括基材、多個擴散結構以及多個第一集光結構。基材具有相對的入光面與出光面，擴散結構配置於入光面，且相鄰兩擴散結構之間存有空隙。每一擴散結構具有遠離基材的底面，且相鄰的擴散結構之底面彼此相鄰接。第一集光結構分別配置空隙內，且第一集光結構緊鄰擴散結構。To achieve the above advantages, the present invention further provides an optical film comprising a substrate, a plurality of diffusion structures, and a plurality of first light collecting structures. The substrate has opposite light incident surfaces and light exit surfaces, and the diffusion structure is disposed on the light incident surface, and a gap exists between adjacent diffusion structures. Each diffusion structure has a bottom surface remote from the substrate, and the bottom surfaces of adjacent diffusion structures are adjacent to each other. The first light collecting structures are respectively disposed in the gaps, and the first light collecting structure is adjacent to the diffusing structure.
在本發明之光學膜片中，由於擴散結構與基材的入光面之間設有第一集光結構，所以光能量被擴散結構分散後，第一集光結構可使光能量集中，以提升本發明之光學膜片的集光效率。此外，因第一集光結構可使入射基材之入光面的入射角變小，以降低發生全反射的機率，所以能提升光利用效率。另外，因大部分的光線會先被擴散結構擴散後，才由第一集光結構進行集光，故有助於提升光均勻性。In the optical film of the present invention, since the first light collecting structure is disposed between the diffusing structure and the light incident surface of the substrate, after the light energy is dispersed by the diffusion structure, the first light collecting structure can concentrate the light energy to The light collecting efficiency of the optical film of the present invention is improved. In addition, since the first light collecting structure can reduce the incident angle of the light incident surface of the incident substrate to reduce the probability of occurrence of total reflection, the light use efficiency can be improved. In addition, since most of the light is diffused by the diffusion structure first, the light is collected by the first light collecting structure, thereby contributing to the improvement of light uniformity.
為讓本發明之上述和其他目的、特徵和優點能更明顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。The above and other objects, features and advantages of the present invention will become more <RTIgt;
圖3是本發明一實施例之一種光學膜片的立體示意圖。請參照圖3，本實施例之光學膜片300包括基材310、多個第一集光結構320以及多個擴散結構330。基材310具有相對的入光面312與出光面314，而入光面312與出光面314之間的距離例如是介於30微米至300微米之間。3 is a perspective view of an optical film according to an embodiment of the present invention. Referring to FIG. 3 , the optical film 300 of the embodiment includes a substrate 310 , a plurality of first light collecting structures 320 , and a plurality of diffusion structures 330 . The substrate 310 has opposite light incident surfaces 312 and light exit surfaces 314, and the distance between the light incident surface 312 and the light exit surface 314 is, for example, between 30 micrometers and 300 micrometers.
上述之擴散結構330配置於入光面312，且相鄰兩擴散結構330之間存有空隙，而第一集光結構320分別配置這些空隙內，且第一集光結構320緊鄰擴散結構330。以另一個角度而言，每一第一集光結構320具有相對的底面322與頂角324，且底面322連接入光面312。擴散結構330分別配置於這些第一集光結構320之間的空隙內，且擴散結構330緊鄰第一集光結構320。此外，每一第一集光結構320的頂角324與每一擴散結構330之遠離基材310的底面332位於同一平面，亦即第一集光結構320的頂角324切齊擴散結構330的底面332。另外，相鄰的擴散結構330之底面332彼此相鄰接。The diffusion structure 330 is disposed on the light incident surface 312, and a gap exists between the adjacent two diffusion structures 330, and the first light collection structures 320 are respectively disposed in the gaps, and the first light collection structure 320 is adjacent to the diffusion structure 330. In another aspect, each of the first light collecting structures 320 has an opposite bottom surface 322 and a top corner 324, and the bottom surface 322 is coupled to the light surface 312. The diffusion structures 330 are respectively disposed in the spaces between the first light collecting structures 320 , and the diffusion structures 330 are adjacent to the first light collecting structures 320 . In addition, the apex angle 324 of each of the first light collecting structures 320 is in the same plane as the bottom surface 332 of each of the diffusion structures 330 away from the substrate 310, that is, the apex angle 324 of the first light collecting structure 320 is aligned with the diffusion structure 330. Bottom 332. In addition, the bottom surfaces 332 of the adjacent diffusion structures 330 are adjacent to each other.
在本實施例中，每一擴散結構330包括多個擴散粒子331，以藉由擴散粒子331來達到擴散光線的功效。此外，光學膜片300例如更包括多個第二集光結構340。這些第二集光結構340配置於基材310的出光面314。相鄰的第一集光結構320之底面322例如彼此相鄰接，而基材310的入光面312例如是被這些第一集光結構320的底面322完全覆蓋。相鄰的第二集光結構340之與出光面314連接的底面342例如彼此相鄰接，且出光面314例如是被這些第二集光結構340的底面342完全覆蓋。In the present embodiment, each of the diffusion structures 330 includes a plurality of diffusion particles 331 to achieve the effect of diffusing light by diffusing the particles 331. In addition, the optical film 300 further includes a plurality of second light collecting structures 340, for example. The second light collecting structures 340 are disposed on the light emitting surface 314 of the substrate 310. The bottom surfaces 322 of the adjacent first light collecting structures 320 are adjacent to each other, for example, and the light incident surface 312 of the substrate 310 is completely covered by the bottom surface 322 of the first light collecting structures 320, for example. The bottom surfaces 342 of the adjacent second light collecting structures 340 connected to the light emitting surface 314 are adjacent to each other, for example, and the light emitting surfaces 314 are completely covered by the bottom surfaces 342 of the second light collecting structures 340, for example.
承上述，第一集光結構320與第二集光結構340例如為稜鏡柱，且第一集光結構320具有第一長軸方向321第二集光結構340具有第二長軸方向341，且第一長軸方向321例如是平行於第二長軸方向341。此外，在本實施例中，第一集光結構320與第二集光結構340都以為三角柱為例，但本發明並不限定第一集光結構320與第二集光結構340的形狀需相同。另外，為達到較佳的集光效率，上述每一第一集光結構320之頂角324與第二集光結構340之頂角344的角度範圍例如是介於80度至120度，但不以此為限。In the above, the first light collecting structure 320 and the second light collecting structure 340 are, for example, masts, and the first light collecting structure 320 has a first long axis direction 321 and the second light collecting structure 340 has a second long axis direction 341. And the first major axis direction 321 is, for example, parallel to the second major axis direction 341. In the embodiment, the first light collecting structure 320 and the second light collecting structure 340 are both triangular prisms, but the invention does not limit the shapes of the first light collecting structure 320 and the second light collecting structure 340. . In addition, in order to achieve better light collection efficiency, the angle between the apex angle 324 of each of the first light collecting structures 320 and the apex angle 344 of the second light collecting structure 340 is, for example, between 80 degrees and 120 degrees, but not This is limited to this.
圖4是本發明一實施例中光線於光學膜片中的光路徑示意圖。請參照圖4，基材310之入光面312所面對的側邊為光學膜片300的入光側，當光線50從光學膜片300的入光側進入光學膜片300時，光線50會先進入擴散結構330中。擴散結構330中的擴散粒子331會先將光線50擴散，而被擴散後的光線52會進入第一集光結構320中。第一集光結構320會先對光線52進行初步的集光，接著光線52穿過基材310而進入第二集光結構340。第二集光結構340亦可對光線52進行集光，以使光線52從光學膜片300出射後的出射角度較為集中。4 is a schematic view of a light path of light in an optical film in accordance with an embodiment of the present invention. Referring to FIG. 4 , the side of the substrate 310 facing the light incident surface 312 is the light incident side of the optical film 300 . When the light 50 enters the optical film 300 from the light incident side of the optical film 300 , the light 50 is received. Will enter the diffusion structure 330 first. The diffusing particles 331 in the diffusing structure 330 will first diffuse the light 50, and the diffused light 52 will enter the first light collecting structure 320. The first light collecting structure 320 firstly collects the light 52 first, and then the light 52 passes through the substrate 310 to enter the second light collecting structure 340. The second light collecting structure 340 can also collect the light 52 so that the light exiting angle from the optical film 300 is concentrated.
相較於先前技術所使用的複合式的光學膜片200(如圖2所示)，本實施例之光學膜片300因在基材310的入光面312設置第一集光結構320，所以可藉由第一集光結構320來修正被擴散結構330擴散後的光線52之路徑，以集中光能量，進而提升光學膜片300的集光效率。另一方面，第一集光結構320能使光線52入射入光面312時的入射角變小，能減少光線52在入光面312發生全反射的機率，所以能提升光學膜片300的光利用效率。此外，因絕大部分的光線52是先被擴散結構330擴散後，才由第一集光結構320進行集光，故有助於提升光均勻性。The optical film 300 of the present embodiment is provided with the first light collecting structure 320 on the light incident surface 312 of the substrate 310, as compared with the composite optical film 200 (shown in FIG. 2) used in the prior art. The path of the light ray 52 diffused by the diffusion structure 330 can be corrected by the first light collecting structure 320 to concentrate the light energy, thereby improving the light collecting efficiency of the optical film 300. On the other hand, the first light collecting structure 320 can reduce the incident angle when the light 52 enters the light surface 312, and can reduce the probability of the light 52 being totally reflected on the light incident surface 312, so that the light of the optical film 300 can be improved. usage efficiency. In addition, since most of the light rays 52 are diffused by the diffusion structure 330 first, the light is collected by the first light collecting structure 320, thereby contributing to the improvement of light uniformity.
請參照圖5，在本發明另一實施例中，可於擴散結構330的底面332設置保護片350，以提供保護效果。此保護片350可選用具有抗靜電功能的材質。如此，當光學膜片300a下方設有其他光學膜片時，保護片350可防止光學膜片300a與其下方的光學膜片之間產生靜電吸附的情形。Referring to FIG. 5, in another embodiment of the present invention, a protective sheet 350 may be disposed on the bottom surface 332 of the diffusion structure 330 to provide a protective effect. The protective sheet 350 can be made of a material having an antistatic function. Thus, when another optical film is provided under the optical film 300a, the protective sheet 350 prevents electrostatic adsorption between the optical film 300a and the optical film below it.
在上述光學膜片300中，雖然第一集光結構320的第一長軸方向321平行第二集光結構340的第二長軸方向341，但在其他實施例中，如圖6所示，第一集光結構320的第一長軸方向321也可以垂直第二集光結構340的第二長軸方向341。此外，雖然上述各實施例的第一集光結構320與第二集光結構340都是以稜鏡柱為例，但在其他實施例中，每一稜鏡柱可用沿一直線排列的多個角錐取代。In the optical film 300 described above, although the first major axis direction 321 of the first light collecting structure 320 is parallel to the second long axis direction 341 of the second light collecting structure 340, in other embodiments, as shown in FIG. The first major axis direction 321 of the first light collecting structure 320 may also be perpendicular to the second long axis direction 341 of the second light collecting structure 340. In addition, although the first light collecting structure 320 and the second light collecting structure 340 of the above embodiments are both example of a mast, in other embodiments, each of the masts may be provided with a plurality of pyramids arranged along a straight line. Replace.
在上述光學膜片300中，雖然第一集光結構320是以三角柱為例，但本發明並不限定第一集光結構320的形狀。在圖7所示的另一實施例中，第一集光結構320’為半圓柱。為達到較佳的集光效率，半圓柱之圓弧面326的曲率半徑例如是介於20μm與30μm之間。需說明的是，本文中的半圓柱指的是具有圓弧面的柱體，並非限定為圓柱的一半。此外，請參照圖8，在本發明另一實施例中，第二集光結構340’也可以是與第一集光結構320’相同的半圓柱。但本發明中，第一集光結構與第二集光結構的形狀可不相同，以圖9為例，第一集光結構320為三角柱，而第二集光結構340’為半圓柱。In the above optical film 300, although the first light collecting structure 320 is exemplified by a triangular prism, the shape of the first light collecting structure 320 is not limited by the present invention. In another embodiment shown in Figure 7, the first light collecting structure 320' is a semi-cylindrical shape. In order to achieve better light collection efficiency, the radius of curvature of the semi-cylindrical circular surface 326 is, for example, between 20 μm and 30 μm. It should be noted that the semi-cylindrical in this paper refers to a cylinder having a circular arc surface, and is not limited to half of the cylinder. In addition, please refer to Figure 8,In another embodiment of the present invention, the second light collecting structure 340' may also be the same semi-cylindrical as the first light collecting structure 320'. However, in the present invention, the shapes of the first light collecting structure and the second light collecting structure may be different. Taking FIG. 9 as an example, the first light collecting structure 320 is a triangular column, and the second light collecting structure 340' is a semi-cylindrical shape.
在上述光學膜片300中，雖然擴散結構330是藉由擴散粒子331來達到擴散效果，但本發明並不限定擴散結構的擴散機制。以圖10為例，擴散結構330’包括互相堆疊的第一介質層336與第二介質層338，第一介質層336的折射率大於第二介質層338的折射率，且第一介質層336與第二介質層338的接觸面337呈不規則狀。此處所謂的呈不規則狀的接觸面337為具有高低起伏的不規則表面，且因互相連接的第一介質層336與第二介質層338的折射率不同，所以光線可在接觸面337產生不同角度的折射與散射，如此可達到擴散光線的效果。In the above optical film 300, although the diffusion structure 330 achieves a diffusion effect by the diffusion particles 331, the present invention does not limit the diffusion mechanism of the diffusion structure. Taking FIG. 10 as an example, the diffusion structure 330' includes a first dielectric layer 336 and a second dielectric layer 338 stacked on each other. The refractive index of the first dielectric layer 336 is greater than the refractive index of the second dielectric layer 338, and the first dielectric layer 336 The contact surface 337 with the second dielectric layer 338 is irregular. The irregular contact surface 337 herein is an irregular surface having a high and low undulation, and the light may be generated at the contact surface 337 because the refractive indices of the interconnected first dielectric layer 336 and the second dielectric layer 338 are different. Refraction and scattering at different angles, so that the effect of diffusing light can be achieved.
圖11是本發明另一實施例之光學膜片的剖面示意圖。請參照圖11，本實施例之光學膜片300b與上述之光學膜片300相似，差別處在於本實施例之光學膜片300b中，擴散結構330並非填滿相鄰兩第一集光結構320之間的空隙S。實際上，只要每一空隙S之80%以上的空間被對應的擴散結構330所佔據，即可達到良好的擴散效果。此外，因大部分的光線(例如約80%的光線)會先被擴散結構330擴散後，才由第一集光結構320進行集光，故有助於提升光均勻性。Figure 11 is a cross-sectional view showing an optical film according to another embodiment of the present invention. Referring to FIG. 11, the optical film 300b of the present embodiment is similar to the optical film 300 described above. The difference is that in the optical film 300b of the embodiment, the diffusion structure 330 does not fill the adjacent two first light collecting structures 320. The gap between S. In fact, as long as more than 80% of the space of each gap S is occupied by the corresponding diffusion structure 330, a good diffusion effect can be achieved. In addition, since most of the light (for example, about 80% of the light) is first diffused by the diffusion structure 330, the light is collected by the first light collecting structure 320, thereby contributing to the improvement of light uniformity.
綜上所述，本發明之光學膜片中，由於擴散結構與基材的入光面之間設有第一集光結構，所以光能量被擴散結構分散後，第一集光結構可使光能量集中，以提升本發明之光學膜片的集光效率。此外，因第一集光結構可使入射基材之入光面的入射角變小，以降低發生全反射的機率，所以能提升光利用效率。In summary, in the optical film of the present invention, since the first light collecting structure is disposed between the diffusing structure and the light incident surface of the substrate, the first light collecting structure can make the light light dispersed by the diffusion structure. The energy is concentrated to enhance the light collecting efficiency of the optical film of the present invention. In addition, since the first light collecting structure can reduce the incident angle of the light incident surface of the incident substrate to reduce the probability of occurrence of total reflection, the light use efficiency can be improved.
雖然本發明已以較佳實施例揭露如上，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，當可作些許之更動與潤飾，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。While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.
50、52．．．光線50, 52. . . Light
100．．．背光模組100. . . Backlight module
110．．．光源110. . . light source
120．．．導光板120. . . Light guide
122、212、312．．．入光面122, 212, 312. . . Glossy surface
124、214、314．．．出光面124, 214, 314. . . Glossy surface
130．．．下擴散片130. . . Lower diffuser
140．．．下稜鏡片140. . . Bottom piece
150．．．上稜鏡片150. . . Captain
160．．．上擴散片160. . . Upper diffuser
200、300、300a、300b．．．光學膜片200, 300, 300a, 300b. . . Optical diaphragm
210、310．．．基材210, 310. . . Substrate
220．．．擴散層220. . . Diffusion layer
230．．．稜鏡柱230. . . Pillar
320、320’．．．第一集光結構320, 320’. . . First light collection structure
321．．．第一長軸方向321. . . First long axis direction
322、332、342．．．底面322, 332, 342. . . Bottom
324、344．．．頂角324, 344. . . Top angle
330、330’．．．擴散結構330, 330’. . . Diffusion structure
331．．．擴散粒子331. . . Diffused particle
336．．．第一介質層336. . . First dielectric layer
338．．．第二介質層338. . . Second dielectric layer
340、340’．．．第二集光結構340, 340’. . . Second light structure
341．．．第二長軸方向341. . . Second long axis direction
350．．．保護片350. . . Protective sheet
S．．．空隙S. . . Void
圖1是習知一種背光模組的剖面示意圖。1 is a schematic cross-sectional view of a conventional backlight module.
圖2是習知一種光學膜片的剖面示意圖。2 is a schematic cross-sectional view of a conventional optical film.
圖3是本發明一實施例之一種光學膜片的立體示意圖。3 is a perspective view of an optical film according to an embodiment of the present invention.
圖4是本發明一實施例中光線於光學膜片中的光路徑示意圖。4 is a schematic view of a light path of light in an optical film in accordance with an embodiment of the present invention.
圖5是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 5 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
圖6是本發明另一實施例之一種光學膜片的立體示意圖。Figure 6 is a perspective view of an optical film according to another embodiment of the present invention.
圖7是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 7 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
圖8是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 8 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
圖9是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 9 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
圖10是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 10 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
圖11是本發明另一實施例之一種光學膜片的剖面示意圖。Figure 11 is a cross-sectional view showing an optical film according to another embodiment of the present invention.
300．．．光學膜片300. . . Optical diaphragm
310．．．基材310. . . Substrate
312．．．入光面312. . . Glossy surface
314．．．出光面314. . . Glossy surface
320．．．第一集光結構320. . . First light collection structure
321．．．第一長軸方向321. . . First long axis direction
322、332、342．．．底面322, 332, 342. . . Bottom
324、344．．．頂角324, 344. . . Top angle
330．．．擴散結構330. . . Diffusion structure
331．．．擴散粒子331. . . Diffused particle
340．．．第二集光結構340. . . Second light structure
341．．．第二長軸方向341. . . Second long axis direction
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100115220ATWI429961B (en) | 2011-04-29 | 2011-04-29 | Optical film |
| CN 201110186614CN102253440B (en) | 2011-04-29 | 2011-06-28 | Optical film |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100115220ATWI429961B (en) | 2011-04-29 | 2011-04-29 | Optical film |
| Publication Number | Publication Date |
|---|---|
| TW201243400A TW201243400A (en) | 2012-11-01 |
| TWI429961Btrue TWI429961B (en) | 2014-03-11 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100115220ATWI429961B (en) | 2011-04-29 | 2011-04-29 | Optical film |
| Country | Link |
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| CN (1) | CN102253440B (en) |
| TW (1) | TWI429961B (en) |
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