TW202419941A - Light guiding member and front light module - Google Patents

Abstract

A light guiding member and a front light module is provided by the present invention, wherein the light guiding member has a light guiding region and a light mixing region disposed at a side of the light guiding region. The light guiding member includes a base film and an optical film disposed on the base film. The optical film and the base film include different materials, wherein the optical film includes an upper surface and a lower surface opposite to each other, the lower surface directly contacts the base film, the upper surface has a light controlling microstructure, and the light controlling microstructure includes optical directivity patterns. The thickness of the portion of the optical film in the light guiding region is not greater than the thickness of the base film.

Description

導光組件及前光模組Light guide components and front light modules

本發明涉及一種導光組件及前光模組，特別是涉及一種具有表面微結構的導光組件及前光模組。The present invention relates to a light guide component and a front light module, and in particular to a light guide component and a front light module with a surface microstructure.

前光模組可應用於非自發光顯示面板以提供顯示光源。具體來說，前光模組可設置在顯示面板(例如反射式顯示面板或微穿透式顯示面板)的顯示面的一側並提供光線，其中光線可射至顯示面板的表面，並經顯示面板反射後顯示影像。前光模組可包括發光元件和導光組件，其中導光組件可使發光元件發射出的光線均勻化，並將其引導進入顯示面板中。然而，現有的前光模組可能因導光組件的光線均勻化效果不佳而具有光強度不均的問題，或是前光模組的厚度可能過厚使得顯示裝置的整體厚度變大。因此，如何改善導光組件的設計以改善前光模組的出光效果或降低前光模組的厚度是重要的議題之一。The frontlight module can be applied to a non-self-luminous display panel to provide a display light source. Specifically, the frontlight module can be arranged on one side of the display surface of the display panel (such as a reflective display panel or a micro-transmission display panel) and provide light, wherein the light can be emitted to the surface of the display panel and displayed after being reflected by the display panel. The frontlight module may include a light-emitting element and a light-guiding component, wherein the light-guiding component can make the light emitted by the light-emitting element uniform and guide it into the display panel. However, the existing frontlight module may have a problem of uneven light intensity due to the poor light uniformization effect of the light-guiding component, or the thickness of the frontlight module may be too thick, making the overall thickness of the display device larger. Therefore, how to improve the design of the light-guiding component to improve the light output effect of the frontlight module or reduce the thickness of the frontlight module is one of the important issues.

本發明的主要目的在於提供一種可改善勻光特性和可靠性的導光組件以及包括所述導光組件的前光模組，其中前光模組可達到薄型化的效果。The main purpose of the present invention is to provide a light guide assembly that can improve the uniform light characteristics and reliability, and a front light module including the light guide assembly, wherein the front light module can achieve a thinning effect.

本發明一實施例提供一種導光組件，所述導光組件具有一導光區以及設置在導光區一側的一混光區。導光組件包括基底膜以及設置在基底膜上的一光學膜。光學膜與基底膜包括不同材料，其中光學膜包括彼此相對的一上表面以及一下表面，下表面與基底膜直接接觸，上表面具有一控光微結構，控光微結構包括光學指向性圖案。光學膜在導光區的部分的厚度不大於基底膜的厚度。An embodiment of the present invention provides a light-guiding component, wherein the light-guiding component has a light-guiding area and a light-mixing area disposed on one side of the light-guiding area. The light-guiding component includes a base film and an optical film disposed on the base film. The optical film and the base film include different materials, wherein the optical film includes an upper surface and a lower surface opposite to each other, the lower surface is in direct contact with the base film, and the upper surface has a light-controlling microstructure, and the light-controlling microstructure includes an optical directivity pattern. The thickness of the optical film in the light-guiding area is not greater than the thickness of the base film.

本發明另一實施例提供一種前光模組，其可包括上述的導光組件以及至少一發光元件。發光元件鄰近於混光區設置，其中發光元件所發射的光線由混光區進入導光組件。Another embodiment of the present invention provides a front light module, which may include the above-mentioned light guide assembly and at least one light emitting element. The light emitting element is disposed adjacent to the light mixing area, wherein the light emitted by the light emitting element enters the light guide assembly from the light mixing area.

透過參考以下的詳細描述並同時結合圖式可以理解本發明，須注意的是，為了使讀者能容易瞭解及圖式的簡潔，本發明中的多張圖式只繪出前光模組或包括前光模組的顯示裝置的一部分，且圖式中的特定元件並非依照實際比例繪圖。此外，圖中各元件的數量及尺寸僅作為示意，並非用來限制本發明的範圍。The present invention can be understood by referring to the following detailed description and the drawings. It should be noted that, in order to facilitate the reader's understanding and the simplicity of the drawings, the multiple drawings in the present invention only depict a portion of the front light module or a display device including the front light module, and the specific components in the drawings are not drawn according to the actual scale. In addition, the number and size of each component in the drawings are only for illustration and are not used to limit the scope of the present invention.

本發明通篇說明書與申請專利範圍中會使用某些詞彙來指稱特定元件。本領域技術人員應理解，製造商可能會以不同的名稱來指稱相同的元件。本文並不意在區分那些功能相同但名稱不同的元件。在下文說明書與申請專利範圍中，“含有”與“包括”等詞為開放式詞語，因此其應被解釋為“含有但不限定為…”之意。Certain terms are used throughout the specification and patent claims of this invention to refer to specific components. Those skilled in the art will understand that manufacturers may refer to the same component by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and patent claims, the words "including" and "comprising" are open-ended words, and therefore should be interpreted as "including but not limited to..."

應瞭解到，當元件或膜層被稱為在另一個元件或膜層“上”或“連接到”另一個元件或膜層時，它可以直接在此另一元件或膜層上或直接連接到此另一元件或層，或者兩者之間存在有***的元件或膜層。相反地，當元件被稱為“直接”在另一個元件或膜層“上”或“直接連接到”另一個元件或膜層時，兩者之間不存在有***的元件或膜層。It should be understood that when an element or film layer is referred to as being "on" or "connected to" another element or film layer, it can be directly on or directly connected to the other element or film layer, or there may be intervening elements or film layers between the two. Conversely, when an element is referred to as being "directly" "on" or "directly connected to" another element or film layer, there may be no intervening elements or film layers between the two.

須知悉的是，以下所舉實施例可以在不脫離本發明的精神下，將數個不同實施例中的技術特徵進行替換、重組、混合以完成其他實施例。It should be noted that the following embodiments may replace, reorganize, or mix the technical features in several different embodiments to implement other embodiments without departing from the spirit of the present invention.

請參考圖1和圖2，圖1為本發明第一實施例的前光模組的外觀結構示意圖，而圖2為本發明第一實施例的前光模組的剖視示意圖。本發明的前光模組可應用到非自發光顯示裝置，作為顯示裝置中的光源。非自發光顯示裝置可例如包括反射式顯示面板或微穿透式顯示面板，但不以此為限。同時，本發明的前光模組可應用到任何適合的顯示裝置。例如包括筆記型電腦、公共顯示器、拼接顯示器、車用顯示器、觸控顯示器、電視、監視器、智慧型手機、平板電腦、電子閱讀器、照明設備或應用於上述産品的電子裝置等。Please refer to Figures 1 and 2, Figure 1 is a schematic diagram of the appearance structure of the front light module of the first embodiment of the present invention, and Figure 2 is a schematic cross-sectional diagram of the front light module of the first embodiment of the present invention. The front light module of the present invention can be applied to a non-self-luminous display device as a light source in the display device. The non-self-luminous display device may, for example, include a reflective display panel or a micro-transmission display panel, but is not limited thereto. At the same time, the front light module of the present invention can be applied to any suitable display device. For example, it includes laptops, public displays, spliced displays, car displays, touch displays, televisions, monitors, smart phones, tablet computers, electronic readers, lighting equipment, or electronic devices applied to the above products, etc.

根據本實施例，前光模組FM包括導光組件LG以及發光元件LU，但不以上述為限。發光元件LU可發射光線(例如圖2所示的光線L1和光線L2)至導光組件LG, 當前光模組FM應用到顯示裝置時，導光組件LG可使得發光元件LU所發出的光線具有光均勻化效果，並將光線引導至顯示裝置中的顯示面板作為顯示光源。具體來說，導光組件LG可具有導光區GR以及混光區MR，混光區MR可設置在導光區GR的一側，而發光元件LU鄰近於導光組件LG的混光區MR設置。換言之，發光元件LU所發射的光線可由混光區MR進入導光組件LG。在混光區MR中，光線可透過導光組件LG的結構而被折射、反射、漫射或以其他方式改變光路，藉此達到混光的效果。接著，經混合後的光線可從混光區MR進入導光區GR，並在導光區GR中從前光模組FM的出光區域出光以作為顯示面板的顯示光源。前光模組FM的出光區域可大致上重疊於導光區GR，因此導光區GR可大致上重疊於顯示裝置的顯示區域。本實施例的發光元件LU所發射的光線可為點光源或線光源，而當光線進入導光組件LG的混光區MR後，光線可在混光區MR中混合，使得前光模組FM的出光的均勻程度較高並可轉化為面光源，藉此改善前光模組FM的出光效果。在本實施例中，發光元件LU可例如包括其上設置有多個發光二極體的燈條(light bar)，但不以此為限。在一些實施例中，發光元件LU可包括任何適合的發光二極體。發光二極體可例如包括次毫米發光二極體(mini LED)、微型發光二極體(micro LED)或其他類型的發光二極體，但不以此為限。According to the present embodiment, the front light module FM includes a light guide component LG and a light emitting element LU, but is not limited to the above. The light emitting element LU can emit light (such as the light L1 and the light L2 shown in FIG. 2 ) to the light guide component LG. When the front light module FM is applied to a display device, the light guide component LG can make the light emitted by the light emitting element LU have a light uniformity effect, and guide the light to the display panel in the display device as a display light source. Specifically, the light guide component LG can have a light guide region GR and a light mixing region MR. The light mixing region MR can be arranged on one side of the light guide region GR, and the light emitting element LU is arranged adjacent to the light mixing region MR of the light guide component LG. In other words, the light emitted by the light emitting element LU can enter the light guide component LG from the light mixing region MR. In the light mixing region MR, light can be refracted, reflected, diffused or the light path can be changed in other ways through the structure of the light guide component LG, thereby achieving a light mixing effect. Then, the mixed light can enter the light guide region GR from the light mixing region MR, and emit from the light output area of the front light module FM in the light guide region GR to serve as a display light source for the display panel. The light output area of the front light module FM can roughly overlap with the light guide region GR, so the light guide region GR can roughly overlap with the display area of the display device. The light emitted by the light-emitting element LU of the present embodiment can be a point light source or a line light source, and when the light enters the light mixing region MR of the light guide component LG, the light can be mixed in the light mixing region MR, so that the light output of the front light module FM is more uniform and can be converted into a surface light source, thereby improving the light output effect of the front light module FM. In the present embodiment, the light emitting element LU may include, for example, a light bar on which a plurality of light emitting diodes are disposed, but the present invention is not limited thereto. In some embodiments, the light emitting element LU may include any suitable light emitting diode. The light emitting diode may include, for example, a sub-millimeter light emitting diode (mini LED), a micro light emitting diode (micro LED), or other types of light emitting diodes, but the present invention is not limited thereto.

根據本實施例，導光組件LG包括基底膜BF以及設置在基底膜BF上的光學膜OF。換言之，前光模組FM的導光組件LG是由基底膜BF與光學膜OF依序堆疊而形成。根據本實施例，基底膜BF與光學膜OF包括不同材料，亦即由不同材料所形成，因此本實施例的導光組件LG中可包括至少兩種材料，或是說可由至少兩種材料堆疊所形成。在一些實施例中，光學膜OF和基底膜BF可透過不同製程所形成，並可透過任何適合的方式將光學膜OF設置在基底膜BF上以形成導光組件。以下將詳述本實施例的導光組件LG的各膜層的結構及其他特徵。According to the present embodiment, the light guide component LG includes a base film BF and an optical film OF disposed on the base film BF. In other words, the light guide component LG of the front light module FM is formed by stacking the base film BF and the optical film OF in sequence. According to the present embodiment, the base film BF and the optical film OF include different materials, that is, they are formed by different materials. Therefore, the light guide component LG of the present embodiment may include at least two materials, or may be formed by stacking at least two materials. In some embodiments, the optical film OF and the base film BF may be formed by different processes, and the optical film OF may be disposed on the base film BF in any suitable manner to form a light guide component. The structure and other features of each film layer of the light guide component LG of the present embodiment will be described in detail below.

根據本實施例，基底膜BF可包括任何適合的導光材料，例如聚甲基丙烯酸甲酯(polymethyl methacrylate，PMMA)，但不以此為限。基底膜BF具有高穿透率或低光吸收率，使得光線可在基底膜BF中前進。在一些實施例中，基底膜BF的穿透率可不小於89%，但不以此為限。如圖1和圖2所示，基底膜BF具有第一表面S4與第二表面S1，其中第一表面S4與第二表面S1可分別視為基底膜BF的上表面與下表面，第一表面S4為基底膜BF面對光學膜OF的表面，而第二表面S1為基底膜BF遠離光學膜OF的表面。根據本實施例，發光元件LU發射出的光線可從基底膜BF的第二表面S1離開導光組件LG，即基底膜BF的第二表面S1可為前光模組FM的出光面。本實施例的基底膜BF具有大致上均一的厚度，亦即基底膜BF大致上為一平坦膜層，換言之，基底膜BF在導光區GR的部分的厚度與基底膜BF在混光區MR的部分的厚度可大致上相同，例如為圖2所示的基底膜BF的厚度C1。According to the present embodiment, the base film BF may include any suitable light-guiding material, such as polymethyl methacrylate (PMMA), but not limited thereto. The base film BF has a high transmittance or a low light absorption rate, so that light can advance in the base film BF. In some embodiments, the transmittance of the base film BF may be not less than 89%, but not limited thereto. As shown in Figures 1 and 2, the base film BF has a first surface S4 and a second surface S1, wherein the first surface S4 and the second surface S1 can be respectively regarded as the upper surface and the lower surface of the base film BF, the first surface S4 is the surface of the base film BF facing the optical film OF, and the second surface S1 is the surface of the base film BF away from the optical film OF. According to the present embodiment, the light emitted by the light-emitting element LU can leave the light-guiding component LG from the second surface S1 of the base film BF, that is, the second surface S1 of the base film BF can be the light-emitting surface of the front light module FM. The base film BF of this embodiment has a substantially uniform thickness, that is, the base film BF is substantially a flat film layer. In other words, the thickness of the base film BF in the light guiding region GR and the thickness of the base film BF in the light mixing region MR may be substantially the same, such as the thickness C1 of the base film BF shown in FIG. 2 .

光學膜OF設置在基底膜BF上，其中在前光模組FM的俯視方向(例如平行於方向Z)上，光學膜OF的兩側可分別切齊於基底膜BF的兩側。換言之，光學膜OF可不突出於基底膜BF設置。光學膜OF包括彼此相對的上表面S2以及下表面S3，其中下表面S3與基底膜BF直接接觸，即光學膜OF與基底膜BF之間可不包括其他膜層。根據本實施例，光學膜OF可具有高透光率、低霧度值和低光吸收率。具體來說，光學膜OF的透光率可不小於89%。在一些實施例中，光學膜OF的透光率可大於89%。在一些實施例中，光學膜OF的透光率可大於89%或小於95%。在一些實施例中，光學膜OF的霧度值可小於0.5。在一些實施例中，光學膜OF的霧度值可介於0.5至0.3。具體來說，光學膜OF的光吸收率可小於0.07%。在一些實施例中，光學膜OF的光吸收率可介於0.07%至0.03%。在一些實施例中，光學膜OF的光吸收率可小於0.03%。光學膜OF的折射率可介於1.3到1.7之間，而基底膜BF的折射率可大於1.7，但不以此為限。再者，在本實施例中，可選擇硬度大於基底膜BF的材料的硬度的材料作為光學膜OF的材料，即光學膜OF的硬度可大於基底膜BF的硬度，例如光學膜OF的硬度範圍可從1H到4H，但不以此為限。The optical film OF is disposed on the base film BF, wherein in the top-view direction of the front light module FM (e.g., parallel to the direction Z), the two sides of the optical film OF may be respectively aligned with the two sides of the base film BF. In other words, the optical film OF may not protrude from the base film BF. The optical film OF includes an upper surface S2 and a lower surface S3 opposite to each other, wherein the lower surface S3 is in direct contact with the base film BF, that is, no other film layer may be included between the optical film OF and the base film BF. According to this embodiment, the optical film OF may have high transmittance, low haze value, and low light absorption. Specifically, the transmittance of the optical film OF may be not less than 89%. In some embodiments, the transmittance of the optical film OF may be greater than 89%. In some embodiments, the transmittance of the optical film OF may be greater than 89%. In some embodiments, the transmittance of the optical film OF may be greater than 89% or less than 95%. In some embodiments, the haze value of the optical film OF may be less than 0.5. In some embodiments, the haze value of the optical film OF may be between 0.5 and 0.3. Specifically, the light absorptivity of the optical film OF may be less than 0.07%. In some embodiments, the light absorptivity of the optical film OF may be between 0.07% and 0.03%. In some embodiments, the light absorptivity of the optical film OF may be less than 0.03%. The refractive index of the optical film OF may be between 1.3 and 1.7, and the refractive index of the base film BF may be greater than 1.7, but not limited thereto. Furthermore, in this embodiment, a material having a hardness greater than that of the material of the base film BF may be selected as the material of the optical film OF, that is, the hardness of the optical film OF may be greater than that of the base film BF, for example, the hardness of the optical film OF may range from 1H to 4H, but not limited thereto.

據此，在本實施例中，可選擇符合上述特性的材料作為光學膜OF的材料。詳言之，光學膜OF可包括一第一材料，其中第一材料可選自具有高透光率、低霧度值、低光吸收率的任何適合的材料。在一些實施例中，第一材料還可選自折射率可介於1.3至1.7之間的材料。在一些實施例中，第一材料還可選自硬度大於基底膜BF的硬度的材料，即第一材料的硬度可大於基底膜BF的硬度。舉例來說，光學膜OF可例如包括透明高分子材料，但不以此為限。透明高分子材料可例如包括紫外線(UV)光學膠、樹脂(例如聚碳酸酯(polycarbonate)、聚對苯二甲酸乙二酯(polyethylene terephthalate)，但不以此為限)、人造纖維、其他適合的材料或上述材料的組合。需注意的是，上述第一材料的舉例僅為示例性的，而光學膜OF可包括符合上述特性的任何適合的材料，本發明並不以此為限。在一些實施例中，光學膜OF所包括的第一材料可為單一材料。在一些實施例中，第一材料可為複合材料，其中複合材料由符合上述特性的兩種或以上的材料所形成。透過第一材料可使光學膜OF具有高透光率、低霧度值、低光吸收率，藉此使光學膜OF具有良好的光學性質。換言之，光線可較容易在光學膜OF中前進而不被吸收和/或阻擋。此外，透過包括硬度較高的第一材料，可使得光學膜OF的表面有良好的抗刮性、抗蝕性，而將光學膜OF設置在基底膜BF上時，光學膜OF可提供基底膜BF的保護功效，進而改善導光組件LG的可靠性。Accordingly, in the present embodiment, a material that meets the above characteristics can be selected as the material of the optical film OF. In detail, the optical film OF may include a first material, wherein the first material may be selected from any suitable material having high light transmittance, low haze value, and low light absorption rate. In some embodiments, the first material may also be selected from a material whose refractive index may be between 1.3 and 1.7. In some embodiments, the first material may also be selected from a material whose hardness is greater than the hardness of the base film BF, that is, the hardness of the first material may be greater than the hardness of the base film BF. For example, the optical film OF may include, for example, a transparent polymer material, but is not limited thereto. The transparent polymer material may, for example, include ultraviolet (UV) optical glue, resin (such as polycarbonate, polyethylene terephthalate, but not limited thereto), artificial fiber, other suitable materials, or a combination of the above materials. It should be noted that the above-mentioned examples of the first material are only exemplary, and the optical film OF may include any suitable material that meets the above-mentioned characteristics, and the present invention is not limited thereto. In some embodiments, the first material included in the optical film OF may be a single material. In some embodiments, the first material may be a composite material, wherein the composite material is formed by two or more materials that meet the above-mentioned characteristics. Through the first material, the optical film OF can have high light transmittance, low haze value, and low light absorption rate, thereby making the optical film OF have good optical properties. In other words, light can more easily advance in the optical film OF without being absorbed and/or blocked. In addition, by including a first material with a higher hardness, the surface of the optical film OF can have good scratch resistance and corrosion resistance, and when the optical film OF is disposed on the base film BF, the optical film OF can provide the protective effect of the base film BF, thereby improving the reliability of the light guide component LG.

請參考圖2，光學膜OF在導光組件LG的導光區GR的部分與光學膜OF在導光組件LG的混光區MR的部分可具有不同厚度。詳言之，如圖2所示，光學膜OF在混光區MR的部分可具有厚度A1，而光學膜OF在導光區GR的部分可具有厚度B1，其中厚度A1與厚度B1可不相同。厚度A1可例如定義為光學膜OF在混光區MR的部分的最大厚度，而厚度B1可例如定義為光學膜OF在導光區GR的部分的最大厚度。光學膜OF在導光區GR的部分的厚度B1不大於基底膜BF的厚度C1。在本實施例中，厚度B1小於厚度C1，例如，厚度A1對厚度C1的比值範圍從0.1到2(即，0.1≤A1/C1≤2)，而厚度B1對厚度C1的比值範圍從0.001到0.99(即，0.001≤B1/C1≤0.99)。在另一些實施例中，厚度B1可與厚度C1相同。換句話說, 厚度A1、厚度B1與厚度C1三個值中至少有兩個值不相等。據此，可改善基底膜BF對於光學膜OF的支撐效果，進而改善導光組件LG的可靠性。Please refer to Figure 2. The portion of the optical film OF in the light guiding region GR of the light guiding component LG and the portion of the optical film OF in the light mixing region MR of the light guiding component LG may have different thicknesses. In detail, as shown in Figure 2, the portion of the optical film OF in the light mixing region MR may have a thickness A1, and the portion of the optical film OF in the light guiding region GR may have a thickness B1, wherein the thickness A1 and the thickness B1 may be different. The thickness A1 may, for example, be defined as the maximum thickness of the portion of the optical film OF in the light mixing region MR, and the thickness B1 may, for example, be defined as the maximum thickness of the portion of the optical film OF in the light guiding region GR. The thickness B1 of the portion of the optical film OF in the light guiding region GR is not greater than the thickness C1 of the base film BF. In the present embodiment, the thickness B1 is less than the thickness C1, for example, the ratio of the thickness A1 to the thickness C1 ranges from 0.1 to 2 (i.e., 0.1≤A1/C1≤2), and the ratio of the thickness B1 to the thickness C1 ranges from 0.001 to 0.99 (i.e., 0.001≤B1/C1≤0.99). In other embodiments, the thickness B1 may be the same as the thickness C1. In other words, at least two of the three values of the thickness A1, the thickness B1, and the thickness C1 are not equal. Accordingly, the supporting effect of the base film BF on the optical film OF can be improved, thereby improving the reliability of the light guide assembly LG.

此外，如圖2所示的實施例中，光學膜OF在混光區MR的部分的厚度A1大於光學膜OF在導光區GR的部分的厚度B1，亦即在混光區MR中的光學膜OF較厚。因此，在導光組件LG的剖視圖中，光學膜OF在混光區MR的部分包括突出於光學膜OF在導光區GR的部分的突出部分PP。突出部分PP可包括任何適合的形狀，並不以圖2所示為限。以圖2為例，本實施例的突出部分PP在導光組件LG的剖視圖中具有矩形形狀，其中突出部分PP包括側壁SW以及上表面TS1，但不以此為限。突出部分PP的側壁SW可為光學膜OF的側壁，並位於導光區GR與混光區MR的交界處。突出部分PP的上表面TS1可為光學膜OF的上表面S2位於混光區MR的部分。在本實施例中，光學膜OF的上表面S2位於混光區MR的部分(即上表面TS1)可平行於光學膜OF的上表面S2位於導光區GR的部分，或是說可平行於基底膜BF的第一表面S4。根據本實施例，由於光學膜OF在混光區MR的部分的厚度A1大於光學膜OF在導光區GR的部分的厚度B1，而可包括突出部分PP，由發光元件LU所發射的光線在混光區MR中前進時可被突出部分PP的側壁SW反射，進而改善混光區MR的混光效果。此外，透過使光學膜OF在導光區GR的部分的厚度B1較小，可達到導光組件LG的薄型化效果，而當前光模組FM應用到顯示裝置時，可降低顯示裝置的整體厚度。In addition, in the embodiment shown in FIG. 2 , the thickness A1 of the portion of the optical film OF in the light mixing region MR is greater than the thickness B1 of the portion of the optical film OF in the light guiding region GR, that is, the optical film OF in the light mixing region MR is thicker. Therefore, in the cross-sectional view of the light guiding assembly LG, the portion of the optical film OF in the light mixing region MR includes a protruding portion PP that protrudes from the portion of the optical film OF in the light guiding region GR. The protruding portion PP may include any suitable shape and is not limited to that shown in FIG. 2 . Taking FIG. 2 as an example, the protruding portion PP of the present embodiment has a rectangular shape in the cross-sectional view of the light guiding assembly LG, wherein the protruding portion PP includes a side wall SW and an upper surface TS1, but is not limited thereto. The side wall SW of the protruding portion PP may be the side wall of the optical film OF and is located at the junction of the light guiding region GR and the light mixing region MR. The upper surface TS1 of the protruding portion PP may be the portion of the upper surface S2 of the optical film OF located in the light mixing region MR. In the present embodiment, the portion of the upper surface S2 of the optical film OF located in the light mixing region MR (i.e., the upper surface TS1) may be parallel to the portion of the upper surface S2 of the optical film OF located in the light guiding region GR, or in other words, may be parallel to the first surface S4 of the base film BF. According to the present embodiment, since the thickness A1 of the portion of the optical film OF in the light mixing region MR is greater than the thickness B1 of the portion of the optical film OF in the light guiding region GR, a protruding portion PP may be included, and the light emitted by the light-emitting element LU may be reflected by the side wall SW of the protruding portion PP when advancing in the light mixing region MR, thereby improving the light mixing effect of the light mixing region MR. In addition, by making the thickness B1 of the portion of the optical film OF in the light guiding region GR smaller, the thinning effect of the light guiding component LG can be achieved, and when the front light module FM is applied to the display device, the overall thickness of the display device can be reduced.

此外，在本實施例中，光學膜OF在混光區MR的部分的厚度A1可大於基底膜BF的厚度C1。在一些實施例中，厚度A1可與厚度C1相同。透過使光學膜OF在混光區MR的部分的厚度A1大於基底膜BF的厚度C1，可增加位於混光區MR的光學膜OF的部分在導光組件LG中所占的比例，進而改善混光區MR的混光效果。In addition, in the present embodiment, the thickness A1 of the optical film OF in the light mixing region MR may be greater than the thickness C1 of the base film BF. In some embodiments, the thickness A1 may be the same as the thickness C1. By making the thickness A1 of the optical film OF in the light mixing region MR greater than the thickness C1 of the base film BF, the proportion of the optical film OF in the light mixing region MR in the light guide assembly LG may be increased, thereby improving the light mixing effect of the light mixing region MR.

導光組件LG的最大厚度為光學膜OF在混光區MR的部分的厚度A1與基底膜BF的厚度C1之和。根據本實施例，由於發光元件LU鄰近於導光組件LG的混光區MR設置，因此導光組件LG的最大厚度(即厚度A1與厚度C1之和)可依據發光元件LU的厚度設計而定。如圖2所示，發光元件LU(例如但不限於為包括發光二極體的燈條)在導光組件LG的俯視方向(即平行於方向Z)上可具有厚度D1，而導光組件LG的最大厚度可小於或等於發光元件LU的厚度D1，即A1+C1≤D1，因此光學膜OF的上表面S2位於混光區MR的部分(即上表面TS1)可不突出於發光元件LU的上表面TS2。The maximum thickness of the light guide assembly LG is the sum of the thickness A1 of the portion of the optical film OF in the light mixing region MR and the thickness C1 of the base film BF. According to the present embodiment, since the light emitting element LU is disposed adjacent to the light mixing region MR of the light guide assembly LG, the maximum thickness of the light guide assembly LG (i.e., the sum of the thickness A1 and the thickness C1) may be designed according to the thickness of the light emitting element LU. As shown in FIG. 2 , the light emitting element LU (e.g., but not limited to, a light strip including a light emitting diode) may have a thickness D1 in the top view direction of the light guide assembly LG (i.e., parallel to the direction Z), and the maximum thickness of the light guide assembly LG may be less than or equal to the thickness D1 of the light emitting element LU, i.e., A1+C1≤D1, so the portion of the upper surface S2 of the optical film OF located in the light mixing region MR (i.e., the upper surface TS1) may not protrude from the upper surface TS2 of the light emitting element LU.

根據本實施例，如圖1和圖2所示，光學膜OF的上表面S2具有控光微結構MS，其中控光微結構MS包括光學指向性圖案。光學指向性圖案可包括任何可改變光線路徑的圖案。舉例來說，本實施例的控光微結構MS可包括(但不限於)棱形結構。此處的“棱形結構”定義為包括棱形部分的任何適合的結構，其中棱形部分是指在該結構的垂直剖面圖中由兩個面相接所形成的部分。例如，如圖1所示，控光微結構MS可具有角錐形狀，且如圖2所示，控光微結構MS在剖視圖中包括由兩個斜面相接所形成的棱形部分，亦即控光微結構MS在光學膜OF的上表面S2形成棱形凹槽。需注意的是，上述關於控光微結構MS的結構形狀的特徵敘述僅為示例性的，本發明並不以上述或圖1、圖2所示為限。在一些實施例中，控光微結構MS可根據導光組件LG的設計而具有任何適合的形狀。此外，圖2所示出的控光微結構MS的排列方式僅為示例性的，本發明並不以此為限。根據本實施例，控光微結構MS可透過任何適合的圖案化製程形成在導光組件LG的上表面S2上。在一些實施例中，控光微結構MS可例如為透過在上表面S2上移除部分光學膜OF所形成的棱形凹槽，但不以此為限。According to the present embodiment, as shown in FIG. 1 and FIG. 2 , the upper surface S2 of the optical film OF has a light-controlling microstructure MS, wherein the light-controlling microstructure MS includes an optical directivity pattern. The optical directivity pattern may include any pattern that can change the path of light. For example, the light-controlling microstructure MS of the present embodiment may include (but is not limited to) a prismatic structure. The "prismatic structure" herein is defined as any suitable structure including a prismatic portion, wherein the prismatic portion refers to a portion formed by two surfaces connected in a vertical cross-sectional view of the structure. For example, as shown in FIG. 1 , the light-controlling microstructure MS may have a pyramid shape, and as shown in FIG. 2 , the light-controlling microstructure MS includes a prismatic portion formed by two inclined surfaces connected in a cross-sectional view, that is, the light-controlling microstructure MS forms a prismatic groove on the upper surface S2 of the optical film OF. It should be noted that the above-mentioned feature description about the structural shape of the light-controlling microstructure MS is only exemplary, and the present invention is not limited to the above or as shown in Figures 1 and 2. In some embodiments, the light-controlling microstructure MS may have any suitable shape according to the design of the light-guiding component LG. In addition, the arrangement of the light-controlling microstructure MS shown in Figure 2 is only exemplary, and the present invention is not limited thereto. According to the present embodiment, the light-controlling microstructure MS may be formed on the upper surface S2 of the light-guiding component LG by any suitable patterning process. In some embodiments, the light-controlling microstructure MS may be, for example, a prismatic groove formed by removing part of the optical film OF on the upper surface S2, but is not limited thereto.

根據本發明，控光微結構MS可分布在導光區GR與混光區MR，並可用於改變光線在導光組件LG中的光路。如圖1和圖2所示，控光微結構MS分布在導光區GR的部分為控光微結構MSG，而分布在混光區MR的部分為控光微結構MSR。此外，控光微結構MSR還可設置在光學膜OF的突出部分PP的側壁SW表面。當光線在導光組件LG中前進並接觸到控光微結構MS時，控光微結構MS可使光線産生內全反射。詳言之，當光線(例如光線L1，以實線表示)在導光區GR中接觸到控光微結構MSG時，控光微結構MS可使光線L1産生內全反射，使光線L1可朝下前進，或是說朝著遠離光學膜OF的上表面S2的方向前進，藉此可改善前光模組FM的出光亮度。另一方面，當光線(例如光線L2，以虛線表示)在混光區MR中接觸到控光微結構MSR時，控光微結構MSR可使光線L2産生內全反射或折射，藉此增加光線L2在混光區MR內的時間和/或路徑長度，改善混光區MR的混光效果。According to the present invention, the light-controlling microstructure MS can be distributed in the light-guiding region GR and the light-mixing region MR, and can be used to change the optical path of the light in the light-guiding component LG. As shown in FIGS. 1 and 2 , the portion of the light-controlling microstructure MS distributed in the light-guiding region GR is the light-controlling microstructure MSG, and the portion distributed in the light-mixing region MR is the light-controlling microstructure MSR. In addition, the light-controlling microstructure MSR can also be disposed on the side wall SW surface of the protruding portion PP of the optical film OF. When light advances in the light-guiding component LG and contacts the light-controlling microstructure MS, the light-controlling microstructure MS can cause the light to produce total internal reflection. In detail, when light (e.g., light L1, represented by a solid line) contacts the light-controlling microstructure MSG in the light-guiding region GR, the light-controlling microstructure MS can cause the light L1 to generate total internal reflection, so that the light L1 can move downward, or in other words, move in a direction away from the upper surface S2 of the optical film OF, thereby improving the light output brightness of the front light module FM. On the other hand, when light (e.g., light L2, represented by a dotted line) contacts the light-controlling microstructure MSR in the light-mixing region MR, the light-controlling microstructure MSR can cause the light L2 to generate total internal reflection or refraction, thereby increasing the time and/or path length of the light L2 in the light-mixing region MR, thereby improving the light-mixing effect of the light-mixing region MR.

如圖2所示的剖視圖，在本實施例中，控光微結構MS位於混光區MR的部分(即控光微結構MSR)在垂直剖面方向可具有不對稱圖案，但不以此為限。換言之，位於導光區GR的控光微結構MSG與位於混光區MR的控光微結構MSR可具有不同的形狀設計。此處“控光微結構MS具有不對稱形狀”可指在控光微結構MS的垂直剖面方向上，控光微結構MS的棱形部分的兩側斜面的斜率不同的情形。例如，如圖2所示，位於混光區MR的控光微結構MSR的棱形部分的兩側斜面可具有不同斜率，亦即可具有不同傾斜程度。透過使控光微結構MSR具有不對稱圖案，可進一步改善或調整混光區MR的混光效果，進而改善導光組件LG的勻光效果。需注意的是，本實施例的控光微結構MS的形狀並不以圖2所示為限。在一些實施例中，位於導光區GR的控光微結構MSG可依需要而具有不對稱圖案。在一些實施例中，位於導光區GR的控光微結構MSG與位於混光區MR的控光微結構MSR可具有對稱圖案。As shown in the cross-sectional view of FIG2 , in the present embodiment, the portion of the light-controlling microstructure MS located in the light-mixing region MR (i.e., the light-controlling microstructure MSR) may have an asymmetric pattern in the vertical cross-sectional direction, but is not limited thereto. In other words, the light-controlling microstructure MSG located in the light-guiding region GR and the light-controlling microstructure MSR located in the light-mixing region MR may have different shape designs. Here, “the light-controlling microstructure MS has an asymmetric shape” may refer to a situation in which the slopes of the inclined surfaces on both sides of the prismatic portion of the light-controlling microstructure MS are different in the vertical cross-sectional direction of the light-controlling microstructure MS. For example, as shown in FIG2 , the inclined surfaces on both sides of the prismatic portion of the light-controlling microstructure MSR located in the light-mixing region MR may have different slopes, that is, different degrees of inclination. By making the light-controlling microstructure MSR have an asymmetric pattern, the light mixing effect of the light-mixing region MR may be further improved or adjusted, thereby improving the uniform light effect of the light-guiding component LG. It should be noted that the shape of the light-controlling microstructure MS of the present embodiment is not limited to that shown in FIG. 2 . In some embodiments, the light-controlling microstructure MSG located in the light-guiding region GR may have an asymmetric pattern as required. In some embodiments, the light-controlling microstructure MSG located in the light-guiding region GR and the light-controlling microstructure MSR located in the light-mixing region MR may have a symmetric pattern.

如上文所述，透過在光學膜OF的上表面S2上設置控光微結構MS，可改善前光模組FM的勻光效果和出光亮度。本發明控光微結構MS的棱形部分的兩側斜面的斜率可依據前光模組FM的厚度(例如導光組件LG的最大厚度，但不以此為限)和/或混光區MR的長度(例如長度LT)而定，並不以圖2所示為限，藉此調整光線的光路以達到上述改善勻光效果和/或出光亮度的功效。需注意的是，本發明的前光模組FM所包括的元件和/或膜層並不以上述結構為限，而可包括其他適合的元件和/或膜層。As described above, by providing a light-controlling microstructure MS on the upper surface S2 of the optical film OF, the uniform light effect and light output brightness of the front light module FM can be improved. The slopes of the two side inclined surfaces of the prismatic portion of the light-controlling microstructure MS of the present invention can be determined according to the thickness of the front light module FM (e.g., the maximum thickness of the light guide assembly LG, but not limited thereto) and/or the length of the light mixing region MR (e.g., the length LT), and are not limited to that shown in FIG. 2 , thereby adjusting the optical path of the light to achieve the above-mentioned effect of improving the uniform light effect and/or light output brightness. It should be noted that the components and/or film layers included in the front light module FM of the present invention are not limited to the above-mentioned structures, but may include other suitable components and/or film layers.

下文中將描述本發明更多的實施例。為了簡化說明，下述實施例中相同的膜層或元件會使用相同的標注，且其特徵不再贅述，而各實施例之間的差異將會於下文中詳細描述。More embodiments of the present invention will be described below. For simplicity of description, the same film layers or components in the following embodiments will use the same labels, and their features will not be repeated, and the differences between the embodiments will be described in detail below.

請參考圖3和圖4，圖3為本發明第二實施例的前光模組的外觀結構示意圖，圖4為本發明第二實施例的前光模組的剖視示意圖。在本實施例中，光學膜OF位在混光區MR的部分可包括突出部分PP，其中突出部分PP可突出於光學膜OF在導光區GR的部分。相較於上述第一實施例，本實施例的光學膜OF在混光區MR的部分可具有不同形狀，亦即突出部分PP可具有不同形狀。詳言之，本實施例光學膜OF的突出部分PP例如具有楔形形狀，並可具有上表面TS3，其中上表面TS3為斜面，並與光學膜OF的上表面S2位於導光區GR的部分在導光區GR與混光區MR的交界處相接。光學膜OF的突出部分PP的上表面TS3可定義為光學膜OF的上表面S2在混光區MR的部分。由於本實施例的突出部分PP具有楔形形狀，因此光學膜OF的上表面S2在混光區MR的部分(即上表面TS3)與基底膜BF接觸於光學膜OF的下表面S3的第一表面S4可在延伸線上相交，亦即上表面TS3不平行於基底膜BF的第一表面S4。此外，由於本實施例的光學膜OF在混光區MR的部分的厚度不均一，因此光學膜OF在混光區MR的部分的厚度A1可以是光學膜OF在混光區MR中的部分的最大厚度，即厚度A1可為光學膜OF接觸於發光元件LU的部分的厚度。需注意的是，本發明的導光組件LG的光學膜OF的結構並不以圖3、圖4所示為限。Please refer to Figures 3 and 4, Figure 3 is a schematic diagram of the appearance structure of the front light module of the second embodiment of the present invention, and Figure 4 is a schematic cross-sectional diagram of the front light module of the second embodiment of the present invention. In this embodiment, the portion of the optical film OF located in the light mixing region MR may include a protruding portion PP, wherein the protruding portion PP may protrude from the portion of the optical film OF located in the light guiding region GR. Compared with the above-mentioned first embodiment, the portion of the optical film OF in the light mixing region MR of this embodiment may have different shapes, that is, the protruding portion PP may have different shapes. In detail, the protruding portion PP of the optical film OF of this embodiment has, for example, a wedge shape, and may have an upper surface TS3, wherein the upper surface TS3 is an inclined surface, and is connected to the portion of the upper surface S2 of the optical film OF located in the light guiding region GR at the junction of the light guiding region GR and the light mixing region MR. The upper surface TS3 of the protruding portion PP of the optical film OF can be defined as the portion of the upper surface S2 of the optical film OF in the light mixing region MR. Since the protruding portion PP of the present embodiment has a wedge shape, the portion of the upper surface S2 of the optical film OF in the light mixing region MR (i.e., the upper surface TS3) and the first surface S4 of the base film BF contacting the lower surface S3 of the optical film OF can intersect on the extension line, that is, the upper surface TS3 is not parallel to the first surface S4 of the base film BF. In addition, since the thickness of the optical film OF in the light mixing region MR of the present embodiment is not uniform, the thickness A1 of the optical film OF in the light mixing region MR can be the maximum thickness of the optical film OF in the light mixing region MR, that is, the thickness A1 can be the thickness of the portion of the optical film OF contacting the light-emitting element LU. It should be noted that the structure of the optical film OF of the light-guiding assembly LG of the present invention is not limited to that shown in Figures 3 and 4.

如圖3和圖4所示，在本實施例中，控光微結構MS可分布在導光區GR與混光區MR，其中，分布在導光區GR的控光微結構MS為控光微結構MSG’，而分布在混光區MR的控光微結構MS為控光微結構MSR’，其中控光微結構MSR’可設置在上表面TS3上。控光微結構MS的結構特徵可參考上述第一實施例的內容，故不再贅述。透過在位於混光區MR中的上表面TS3上設置控光微結構MSR’，當光線(例如光線L3)在混光區MR中前進並接觸到控光微結構MSR’時，控光微結構MSR’可使光線L3産生內全反射，藉此增加光線L3在混光區MR內的時間和/或路徑長度，進而改善混光區MR的混光效果。此外，當光線L3在混光區MR中前進並接觸到為傾斜面的上表面TS3時，光線L3可被上表面TS3反射，藉此改善混光區MR的混光效果。As shown in FIG. 3 and FIG. 4 , in this embodiment, the light-controlling microstructure MS can be distributed in the light-guiding region GR and the light-mixing region MR, wherein the light-controlling microstructure MS distributed in the light-guiding region GR is the light-controlling microstructure MSG’, and the light-controlling microstructure MS distributed in the light-mixing region MR is the light-controlling microstructure MSR’, wherein the light-controlling microstructure MSR’ can be disposed on the upper surface TS3. The structural features of the light-controlling microstructure MS can refer to the contents of the first embodiment above, so it will not be repeated. By providing a light-controlling microstructure MSR' on the upper surface TS3 located in the light-mixing region MR, when light (e.g., light L3) advances in the light-mixing region MR and contacts the light-controlling microstructure MSR', the light-controlling microstructure MSR' can cause the light L3 to generate total internal reflection, thereby increasing the time and/or path length of the light L3 in the light-mixing region MR, thereby improving the light-mixing effect of the light-mixing region MR. In addition, when the light L3 advances in the light-mixing region MR and contacts the upper surface TS3, which is an inclined surface, the light L3 can be reflected by the upper surface TS3, thereby improving the light-mixing effect of the light-mixing region MR.

請再參考圖1到圖4，如上文所述，前光模組FM的發光元件LU鄰近於導光組件LG的混光區MR設置，使得發光元件LU所發射的光線可從混光區MR進入導光組件LG，接著光線可在混光區MR被均勻化後再行進至導光區GR，而後從導光區GR出光，藉此達到勻光效果。根據本發明，發光元件LU可設置在前光模組FM中任何適合的位置。例如，如圖1到圖4所示，發光元件LU設置在混光區MR相反於導光區GR的一側邊SL3附近，其中側邊SL3位在混光區MR中相反於導光區GR的一側，因此混光區MR位在發光元件LU與導光區GR之間。以下說明本發明的前光模組FM的發光元件LU的其他設置方式。Please refer to Figures 1 to 4 again. As described above, the light-emitting element LU of the front light module FM is disposed adjacent to the light mixing region MR of the light guide component LG, so that the light emitted by the light-emitting element LU can enter the light guide component LG from the light mixing region MR, and then the light can be uniformed in the light mixing region MR before traveling to the light guide region GR, and then emitted from the light guide region GR, thereby achieving a uniform light effect. According to the present invention, the light-emitting element LU can be disposed at any suitable position in the front light module FM. For example, as shown in Figures 1 to 4, the light-emitting element LU is disposed near a side SL3 of the light mixing region MR opposite to the light guide region GR, wherein the side SL3 is located on a side of the light mixing region MR opposite to the light guide region GR, and therefore the light mixing region MR is located between the light-emitting element LU and the light guide region GR. Other arrangements of the light-emitting element LU of the front light module FM of the present invention are described below.

請參考圖5和圖6，圖5為本發明第三實施例的前光模組的結構外觀示意圖，圖6為本發明第三實施例的前光模組的俯視示意圖。為了簡化圖式，圖6並未示出設置在光學膜OF的上表面S2上的控光微結構，而其特徵可參考上述實施例的敘述。根據本實施例，發光元件LU包括至少一個第一發光體LU1，而該第一發光體LU1可分別設置在導光組件LG的混光區MR的相對兩側(例如各設置一顆發光二極體在其中一側)，使得第一發光體LU1所發射的光線可從混光區MR的兩側進入導光組件LG。其中, 第一發光體LU1可例如包括將多個發光二極體設置而成的燈源組，但不以此為限。在圖6所示的俯視圖中，混光區MR包括彼此相對的側邊SL1和側邊SL2，而兩個第一發光體LU1分別鄰近於混光區MR的側邊SL1和側邊SL2設置，使得混光區MR在垂直於導光區GR與混光區MR的排列方向(即方向Y)上可位於兩個第一發光體LU1之間。需注意的是，本實施例的發光元件LU的結構並不以圖5、圖6所示為限。在一些實施例中，第一發光體LU1可僅鄰近於側邊SL1和側邊SL2的其中一個設置。在一些實施例中，發光元件LU還可包括更多第一發光體LU1，設置在任何適合的位置，例如(但不限於)同時設置在側邊SL1、側邊SL2與側邊SL3附近。此外，圖5和圖6所示的第一發光體LU1的設置方式可應用到圖1和圖2所示的導光組件LG。根據本實施例，由於發光元件LU可鄰近於混光區MR的側邊SL1和/或側邊SL2設置，因此可縮短混光區MR的長度(例如圖2所示的長度LT)，可降低前光模組FM沿導光區GR和混光區MR的排列方向(即方向X)上的長度，進而縮小前光模組FM的尺寸。Please refer to Figures 5 and 6. Figure 5 is a schematic diagram of the structural appearance of the front light module of the third embodiment of the present invention, and Figure 6 is a schematic diagram of a top view of the front light module of the third embodiment of the present invention. In order to simplify the diagram, Figure 6 does not show the light-controlling microstructure disposed on the upper surface S2 of the optical film OF, and its characteristics can refer to the description of the above-mentioned embodiments. According to this embodiment, the light-emitting element LU includes at least one first light-emitting body LU1, and the first light-emitting body LU1 can be respectively disposed on two opposite sides of the light mixing region MR of the light guide component LG (for example, a light-emitting diode is disposed on each side), so that the light emitted by the first light-emitting body LU1 can enter the light guide component LG from both sides of the light mixing region MR. Among them, the first light-emitting body LU1 can, for example, include a lamp source group formed by arranging a plurality of light-emitting diodes, but is not limited to this. In the top view shown in FIG6 , the light mixing region MR includes a side SL1 and a side SL2 opposite to each other, and two first light emitting bodies LU1 are respectively disposed adjacent to the side SL1 and the side SL2 of the light mixing region MR, so that the light mixing region MR can be located between the two first light emitting bodies LU1 in a direction perpendicular to the arrangement direction of the light guiding region GR and the light mixing region MR (i.e., direction Y). It should be noted that the structure of the light emitting element LU of this embodiment is not limited to that shown in FIG5 and FIG6 . In some embodiments, the first light emitting body LU1 can be disposed adjacent to only one of the side SL1 and the side SL2. In some embodiments, the light emitting element LU can also include more first light emitting bodies LU1, disposed at any suitable position, for example (but not limited to) disposed near the side SL1, the side SL2 and the side SL3 at the same time. In addition, the arrangement of the first light emitting body LU1 shown in Figures 5 and 6 can be applied to the light guide assembly LG shown in Figures 1 and 2. According to this embodiment, since the light emitting element LU can be arranged adjacent to the side SL1 and/or the side SL2 of the light mixing region MR, the length of the light mixing region MR can be shortened (for example, the length LT shown in Figure 2), and the length of the front light module FM along the arrangement direction of the light guide region GR and the light mixing region MR (i.e., direction X) can be reduced, thereby reducing the size of the front light module FM.

請參考圖7，圖7為包括本發明的前光模組的顯示裝置的剖視示意圖。為了簡化圖式，圖7僅簡單示出顯示裝置DD中前光模組FM與顯示面板DP的堆疊關係，而前光模組FM和顯示面板DP分別以單層表示。前光模組FM的細部結構可參考上述各實施例的內容，故不再贅述。顯示面板DP可例如包括反射式或微穿透式液晶顯示面板，其中包括兩個基板以及設置在兩個基板之間的電路層、顯示介質層和/或其他元件或膜層，但不以此為限。根據本實施例，顯示裝置DD可包括上述任一實施例中的前光模組FM以及顯示面板DP，其中前光模組FM可設置在顯示面板DP上並提供顯示光源。具體來說，前光模組FM的發光元件LU可發射光線，而光線可透過前光模組FM引導而向下前進，使得光線從前光模組FM下方出光並朝顯示面板DP前進。因此，光線提供顯示面板DP照明光源並可被顯示面板DP反射進而顯示影像。需注意的是，本發明的前光模組FM的應用並不以上述內容為限，而可應用於任何適合的電子裝置中。Please refer to Figure 7, which is a cross-sectional schematic diagram of a display device including the frontlight module of the present invention. In order to simplify the diagram, Figure 7 simply shows the stacking relationship between the frontlight module FM and the display panel DP in the display device DD, and the frontlight module FM and the display panel DP are respectively represented by a single layer. The detailed structure of the frontlight module FM can refer to the contents of the above-mentioned embodiments, so it is not repeated here. The display panel DP may, for example, include a reflective or micro-transmitting liquid crystal display panel, which includes two substrates and a circuit layer, a display medium layer and/or other components or film layers arranged between the two substrates, but is not limited thereto. According to this embodiment, the display device DD may include the frontlight module FM and the display panel DP in any of the above-mentioned embodiments, wherein the frontlight module FM may be arranged on the display panel DP and provide a display light source. Specifically, the light emitting element LU of the front light module FM can emit light, and the light can be guided by the front light module FM and move downward, so that the light is emitted from the bottom of the front light module FM and moves toward the display panel DP. Therefore, the light provides a light source for the display panel DP and can be reflected by the display panel DP to display an image. It should be noted that the application of the front light module FM of the present invention is not limited to the above content, but can be applied to any suitable electronic device.

綜上所述，本發明提供了一種導光組件、包括該導光組件的前光模組以及包括該前光模組的顯示裝置。導光組件可由具有不同材質的基底膜和光學膜堆疊所形成，其中光學膜可選自具有高穿透率、低霧度值和低光吸收率的材料。此外，光學膜的上表面可具有控光微結構，且光學膜在混光區的部分可突出於光學膜在導光區的部分。藉此，可改善導光組件的勻光效果和出光效果。此外，光學膜的硬度可大於基底膜的硬度，藉以提供導光組件保護效果，改善導光組件的可靠性。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 In summary, the present invention provides a light guide assembly, a front light module including the light guide assembly, and a display device including the front light module. The light guide assembly can be formed by stacking a base film and an optical film having different materials, wherein the optical film can be selected from materials having high transmittance, low haze value, and low light absorption rate. In addition, the upper surface of the optical film can have a light control microstructure, and the portion of the optical film in the light mixing area can protrude from the portion of the optical film in the light guide area. Thereby, the uniform light effect and light output effect of the light guide assembly can be improved. In addition, the hardness of the optical film can be greater than the hardness of the base film, so as to provide a protective effect for the light guide assembly and improve the reliability of the light guide assembly. The above is only a preferred embodiment of the present invention, and all equal changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

BF:基底膜 C1,A1,B1,D1:厚度 DD:顯示裝置 DP:顯示面板 FM:前光模組 GR:導光區 L1,L2,L3:光線 LG:導光組件 LT:長度 LU:發光元件 LU1:第一發光體 MR:混光區 MS,MSR,MSG,MSR’,MSG’:控光微結構 OF:光學膜 PP:突出部分 S1:第二表面 S3:下表面 S2,TS1,TS2,TS3:上表面 S4:第一表面 SL1,SL2,SL3:側邊 SW:側壁 X,Y,Z:方向 BF: base film C1, A1, B1, D1: thickness DD: display device DP: display panel FM: front light module GR: light guide area L1, L2, L3: light LG: light guide component LT: length LU: light emitting element LU1: first light emitter MR: light mixing area MS, MSR, MSG, MSR’, MSG’: light control microstructure OF: optical film PP: protruding part S1: second surface S3: lower surface S2, TS1, TS2, TS3: upper surface S4: first surface SL1, SL2, SL3: side SW: side wall X, Y, Z: direction

圖1為本發明第一實施例的前光模組的外觀結構示意圖。 圖2為本發明第一實施例的前光模組的剖視示意圖。 圖3為本發明第二實施例的前光模組的外觀結構示意圖。 圖4為本發明第二實施例的前光模組的剖視示意圖。 圖5為本發明第三實施例的前光模組的外觀結構示意圖。 圖6為本發明第三實施例的前光模組的俯視示意圖。 圖7為包括本發明前光模組的顯示裝置的剖視示意圖。 FIG. 1 is a schematic diagram of the appearance structure of the front light module of the first embodiment of the present invention. FIG. 2 is a schematic diagram of a cross-sectional view of the front light module of the first embodiment of the present invention. FIG. 3 is a schematic diagram of the appearance structure of the front light module of the second embodiment of the present invention. FIG. 4 is a schematic diagram of a cross-sectional view of the front light module of the second embodiment of the present invention. FIG. 5 is a schematic diagram of the appearance structure of the front light module of the third embodiment of the present invention. FIG. 6 is a schematic diagram of a top view of the front light module of the third embodiment of the present invention. FIG. 7 is a schematic diagram of a cross-sectional view of a display device including the front light module of the present invention.

BF:基底膜 BF: Basement membrane

FM:前光模組 FM: front light module

GR:導光區 GR: Light-guiding area

LG:導光組件 LG: Light guide components

LU:發光元件 LU: Light-emitting element

MR:混光區 MR: Mixed light area

MS,MSR,MSG:控光微結構 MS, MSR, MSG: light-controlling microstructures

OF:光學膜 OF:Optical film

S1:第二表面 S1: Second surface

S3:下表面 S3: Lower surface

S2,TS1:上表面 S2,TS1: upper surface

S4:第一表面 S4: First surface

SL3:側邊 SL3: Side

X,Y,Z:方向 X,Y,Z: Direction

Claims (10)

一種導光組件，具有一導光區與設置在所述導光區一側的一混光區，所述導光組件包括： 一基底膜；以及 一光學膜，設置在所述基底膜上，所述光學膜與所述基底膜包括不同材料，所述光學膜具有一上表面與一下表面，所述上表面與所述下表面彼此相對，且所述下表面與所述基底膜直接接觸，其中所述上表面具有一控光微結構，且所述控光微結構包括光學指向性圖案； 其中，所述光學膜位於所述導光區的部分的厚度不大於所述基底膜的厚度。 A light guide component has a light guide area and a light mixing area arranged on one side of the light guide area, the light guide component includes: a base film; and an optical film arranged on the base film, the optical film and the base film include different materials, the optical film has an upper surface and a lower surface, the upper surface and the lower surface are opposite to each other, and the lower surface is in direct contact with the base film, wherein the upper surface has a light control microstructure, and the light control microstructure includes an optical directivity pattern; wherein the thickness of the optical film located in the light guide area is not greater than the thickness of the base film. 根據請求項1所述的導光組件，其中所述基底膜包括聚甲基丙烯酸甲酯(polymethyl methacrylate，PMMA)，所述光學膜包括一第一材料，所述第一材料的透光率不小於89%且霧度值小於0.5，以及所述第一材料的硬度大於所述基底膜的硬度。According to the light-guiding assembly described in claim 1, the base film includes polymethyl methacrylate (PMMA), the optical film includes a first material, the transmittance of the first material is not less than 89% and the haze value is less than 0.5, and the hardness of the first material is greater than the hardness of the base film. 根據請求項1所述的導光組件，其中所述光學膜的折射率小於所述基底膜的折射率。A light-guiding assembly according to claim 1, wherein the refractive index of the optical film is smaller than the refractive index of the base film. 根據請求項1所述的導光組件，其中所述光學膜位於所述混光區的部分的最大厚度為A1，所述光學膜位於所述導光區的所述部分的厚度為B1，以及所述基底膜的厚度為C1，其中，所述厚度A1、所述厚度B1與所述厚度C1之中至少有兩者的值不相等。The light-guiding assembly according to claim 1, wherein the maximum thickness of the portion of the optical film located in the light mixing area is A1, the thickness of the portion of the optical film located in the light-guiding area is B1, and the thickness of the base film is C1, wherein at least two of the thickness A1, the thickness B1 and the thickness C1 are not equal. 根據請求項1所述的導光組件，其中所述基底膜具有接觸於所述光學膜的所述下表面的一第一表面，所述光學膜的所述上表面位於所述混光區的部分平行於所述基底膜的所述第一表面。According to the light-guiding assembly described in claim 1, the base film has a first surface in contact with the lower surface of the optical film, and the upper surface of the optical film located in the light mixing area is parallel to the first surface of the base film. 根據請求項1所述的導光組件，其中所述基底膜具有接觸於所述光學膜的所述下表面的一第一表面，所述光學膜的所述上表面位於所述混光區的部分與所述基底膜的所述第一表面在延伸線上相交。According to the light-guiding assembly described in claim 1, the base film has a first surface in contact with the lower surface of the optical film, and the upper surface of the optical film located in the light mixing area intersects with the first surface of the base film on an extension line. 根據請求項1所述的導光組件，其中所述控光微結構位於所述混光區的部分在垂直剖面方向具有不對稱圖案。According to the light-guiding assembly described in claim 1, the portion of the light-controlling microstructure located in the light-mixing area has an asymmetric pattern in the vertical cross-sectional direction. 一種前光模組，包括： 如請求項1所述的導光組件；以及 至少一個發光元件，鄰近於所述混光區設置，其中所述至少一個發光元件所發射的光線由所述混光區進入所述導光組件。 A front light module, comprising: The light guide assembly as described in claim 1; and At least one light-emitting element, disposed adjacent to the light mixing area, wherein the light emitted by the at least one light-emitting element enters the light guide assembly from the light mixing area. 根據請求項8所述的前光模組，其中所述至少一個發光元件設置在所述混光區相反於所述導光區的一側。According to the front light module described in claim 8, the at least one light-emitting element is arranged on the side of the light mixing area opposite to the light guiding area. 根據請求項8所述的前光模組，其中所述至少一個發光元件包括多個第一發光體，且所述混光區設置在所述多個第一發光體的其中兩個之間。According to the front light module described in claim 8, the at least one light-emitting element includes a plurality of first light-emitting bodies, and the light mixing area is arranged between two of the plurality of first light-emitting bodies.

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