M333583 八、新型說明 【新型所屬之技術領域】 本創作係關於一種光場調整組件，尤其關於供背光模 組用之光場調整組件，其具高輝度、光分布均勻’且可符 合TCO需求之光場調整組件。 【先前技術】 液晶顯示器因其具有高畫質、低輻射、低消耗功率、 較佳空間利用性等優越性，已取代陰極射線管而成爲市場 主流。由於液晶顯示器中的液晶面板本身並不會發光，故 須藉助背光模組提供液晶面板所需之面光源，以使液晶面 板達到顯示的效果，同時獲得足夠之亮度與對比。 構成背光模組之主要元件包括有入射光源、反射膜、 導光板、擴散板、擴散膜、聚光膜、以及稜鏡保護片等。 因應環保議題，L E D照明及液晶顯示器、電視逐漸取 代舊有產品，因此新的光學規範也持續推出，像是TCO 認證。所謂的TCO標準，是由瑞典勞工聯盟提出的，用 於規範顯示器的電子和靜電輻射對環境的污染。現在常用 的有 TC092、TC095、TC099 和 TCO03。TCO 標示不僅於 顯示器產業界廣爲周知，尤其幾乎所有大品牌都貼有TC0 標示。其中目前最嚴格的是TC 003，屬TCO系列中最嚴 格的顯示器製造業標準，在CRT方面主要針對亮度和屏 幕的均勻度更加嚴格要求。TCO01則針對手機的電磁輻射 、人體工學和環境保護作出了詳細規定。還有針對筆記型 -4- M333583 電腦以及桌上型電腦發出一份新的品質及環保標示TCO ’〇5。隨著人們對低功耗、低輻射顯示器設備需求的提高， TC0認證已經成爲消費者採購顯示器產品時的重要參考指 標。 而背光模組廠商爲了使液晶顯示器符合TC 0認證， 也爲了液晶顯示器在不同領域使用，而有了不同的需求， 像是TV要求高亮度、廣視角，或者是NB機密性要求窄 視角，甚至是要解決miira (指顯示器亮度不均勻造成各 種痕跡的現象）、集光、輕薄等等不同需求，所以背光模 組廠商開始要求膜片廠商提供不同的光學膜片組合，或是 具多功能的複合光學膜片，以滿足不同功能訴求的液晶顯 示器。 【新型內容】 本案創作人經廣泛及深入的硏究，創作出一種光場調 整組件，其包含一第一光學層1，一第二光學層2，位在 第一光學層1之上，及一第三光學層3,位在第二光學層 2之上。 本創作之主要目的在於提供一種可改變光線的路徑形 成不同的光場分佈之光場調整組件，其可解決不同背光模 組廠商不同的光場需求，像是集光、解決mura的問題或 者是廣視角的需求。且本創作之光場調整組件體積薄、重 量輕、製程簡便、良率高，故更能符合市場要求，更具競 爭力。 -5- M333583 【實施方式】 請參閱圖1，係本創作之一較佳實施例，該光場分佈 調整組件1〇〇，其包含一第一光學層1，一第二光學層2, 位在第一光學層1之上，及一第三光學層3，位在第二光 學層2之上。 請參閱圖2，使用於本創作之第一光學層1可爲任何 光學基材，該光學基材可爲擴散基材或反射基材，其中該 擴散基材一般分爲內部擴散型與表面擴散型，而內部擴散 型係由含有機或無機擴散顆粒之聚碳酸酯（ Polycarbonate，PC)樹脂、聚苯乙儲（polystyene)或聚 甲基丙烯酸甲酯（Polymethyl methacrylate, PMMA)樹脂 所組成，係擠壓或塗佈成型。而表面擴散型係於基材表面 塗佈含擴散顆粒的塗料或利用壓印的方式使其具有爲透鏡 擴散結構，使其具有光擴散作用。該擴散基材例如但不限 於如圖2a至圖2e所示之擴散板1 1、擴散膜12、高擴散 性擴散膜1 3及1 4、微透鏡薄膜1 5，或爲前述之組合。 使用於本創作之第一光學層1可爲反射基材，其中反 射性基材可爲鏡面反射如圖3 a、擴散反射如圖3 b或高擴 散反射如圖3 c。而擴散反射膜係爲單層或多層結構，其中 一或多層可視需要爲發泡之塑膠或含有粒子之塑膠或爲上 述兩者之組合。本創作光學膜之反射效果，主要是利用發 泡的塑膠或是粒子而達成。上述粒子之種類係熟悉此項技 術者所熟知，可爲有機粒子或無機粒子。本創作之反射基 -6 - M333583 材亦可爲高擴散反射膜，其係於反射基材至少一側塗覆有 高擴散粒子之塗層，該高擴散反射膜之特徵爲根據AS TM D 5 2 3標準方法，以6 0。入射角投射時，測得之光澤度低於 1 〇 %。鏡面反射則爲於一般習知之基材上鍍一或多層金屬 〇 請參閱圖1 ，本創作之第二光學層2係包含一具有空 氣及與空氣折射率相異的介質所構成之調光構造2 1。該調 光構造2 1可使光線在兩個折射率相異且具有微結構的介 質中穿過，產生折射和散射現象，進而可改變從第一光學 層射出或反射之光線之角度，隨著微凸出之調光構造2 1 的不同，光線進入第三光學層的角度亦不相同，故本創作 之光場調整組件之光場分佈也更爲多樣。 使用於本創作之第三光學層3，可爲本創作所屬領域 中具有通常知識所習知之任何透明基材或任何光學基材。 舉例言之，透明基材3 1如圖4a，其可由玻璃或高分子樹 脂所組成。所謂高分子樹脂可爲，但不以此爲限：聚丙烯 酸酯樹脂、聚碳酸酯、聚苯乙烯、聚烯烴、醋酸纖維素、 聚醯亞胺樹脂或聚酯樹脂。較佳爲聚酯樹脂，如聚對苯二 甲酸乙酯（PET)或聚萘二甲酸乙酯（PEN)。 第三光學層3亦可爲光學基材，其例如但不限於圖4b 至4e所示之擴散膜32、聚光膜33、微透鏡薄膜34、偏光 回收膜3 5，或爲前述之組合。 使用於本創作之第二光學層2之調光構造21係位於 第三光學層3之下表面，請參閱圖5，其例如但不限於如 -7- M333583 圖5 a至圖5 i所示之稜鏡柱狀結構2 1 1 - 2 1 3 (即’三角柱 狀）、弧形柱狀結構2 1 4-2 1 6 (即’柱狀結構之峰或谷或 其兩者呈圓弧形式）、1體角結構217、珠狀結構218或 透鏡狀結構2 1 9等。如圖6所示進一步說明本創作之調光 結構之高度、寬度、頂角角度及曲率半徑等幾何性質。根 據本創作，微凸出之調光結構之高度係指該幾何調光結構 之頂部與基材下表面面之距離，其高度係介於〇·ι μη至 8 5 0 μ m之範圍，彼此亦可相同或不相同。寬度係指該幾何 調光狀結構兩谷間之距離’係介於20μηι至ΙΟΟΟμιη之範 圍。稜鏡結構、立體角結構頂角角度係介於60°至178°之 範圍。弧形結構、珠狀結構、透鏡狀結構頂部之曲率半徑 係介於7〇μηι至1.5cm之範圍。 請參閱圖5a至圖5f，使用於本創作之稜鏡柱狀結構 211-213或弧形柱狀結構214-216可爲規則或不規則之柱 狀結構（即，相鄰柱狀結構寬度、高度、頂角角度可爲相 同或不同）、線性或非直線性柱狀結構（即，一柱狀結構 沿其長度方向呈非線性變化，例如呈曲線變化）、相鄰且 不平行的多個柱狀結構、對稱或不對稱之柱狀結構或由上 述結構所組合之群組。 請參閱圖5 g至圖5 i，使用於本創作之立體角結構 2 1 7、珠狀結構2 1 8或透鏡狀結構2 1 9可爲相同或不同大 小’規則或不規則排列所構成之調光構造。其中立體角結 構2 1 7可爲三角錐、四角錐、多角錐或其組合，該頂端以 可爲尖角、弧形、平面狀或其組合。珠狀結構2丨8或透鏡 -8 - M333583 狀結構2 1 9之橫切面可爲正圓、橢圓、不規則之弧形或其 組合。 本創作之光場調整組件具有光場調整的功能，可應用 於液晶顯示器之背光模組中，以因應不同液晶顯示器不同 功能要求，且符合TCO需求。圖7至圖10係利用自動變 角光度計（GonioPhotometer)【GP-200，村上色彩公司 Murakami color research laboratory】，以入射角 0。之入 射光線，測得本創作之光場調整組件於不同組合下所形成 不同的出光光場分佈圖。圖7係爲高擴散性擴散膜之出光 光場分佈圖，圖8係爲高擴散性擴散膜與棱鏡組合或高擴 散性擴散膜與弧形結構組合之出光光場分佈圖，圖9係爲 高擴散性擴散膜與頂角爲66之稜鏡組合之出光光場分佈 圖，圖1 〇係爲高擴散性擴散膜與頂角爲1 1 〇之稜鏡組合 之出光光場分佈圖。 惟上述各實施例僅爲例示性說明本創作之原理及其功 效，而非用於限制本創作。任何熟悉此項技藝之人士可輕 易達成之修飾及改變均包括於本案說明書揭示內容及所附 申請專利範圍之範圍內。因此，本創作之權利保護範圍應 如後述之申請專利範圍所列。 【圖式簡單說明】 圖1爲本創作之實施例之示意圖。 圖2a至2e爲本創作之實施例之示意圖。 圖3a至3c爲反射光之示意圖。 -9 - M333583 圖4a至4e爲本創作之實施例之示意圖。 圖5 a至5 i爲本創作之實施例之示意圖。 圖6 a至6 b爲本創作之調光結構之高度、寬度、頂角 角度及曲率半徑 圖7爲本創作之光場調整組件的光場分佈圖 圖8爲本創作之光場調整組件的光場分佈圖。 圖9爲本創作之光場調整組件的光場分佈圖。 圖1 〇爲本創作之光場調整組件的光場分佈圖。 [主要元件符號說明】 I :第一光學層 2:第二光學層 3 :第三光學層 II :擴散板 1 2 :擴散膜 1 3 :高擴散性擴散膜 1 4 :高擴散性擴散膜 1 5 :微透鏡薄膜 2 1 :調光構造 3 1 :透明基材 32 :擴散膜 33 =聚光膜 34 :微透鏡薄膜 3 5 :偏光回收膜 -10- M333583 1 Ο 0 :光場分佈調整組件 21 1_213 :稜鏡柱狀結構 2 14-2 16 :弧形柱狀結構 2 1 7 :立體角結構 2 1 8 :珠狀結構 2 1 9 :透鏡狀結構M333583 VIII. New description [New technical field] This creation is about a light field adjustment component, especially for the light field adjustment component for backlight module, which has high brightness and uniform light distribution and can meet TCO requirements. Light field adjustment component. [Prior Art] Liquid crystal displays have become the mainstream in the market because of their superior image quality, low radiation, low power consumption, and better space utilization. Since the liquid crystal panel itself does not emit light in the liquid crystal display, the backlight source module is required to provide the surface light source required for the liquid crystal panel, so that the liquid crystal panel can achieve the display effect, and at the same time obtain sufficient brightness and contrast. The main components constituting the backlight module include an incident light source, a reflective film, a light guide plate, a diffusion plate, a diffusion film, a light collecting film, and a ruthenium protection sheet. In response to environmental issues, L E D lighting and LCD monitors and TVs have gradually replaced older products, so new optical specifications continue to be introduced, such as TCO certification. The so-called TCO standard was proposed by the Swedish Labor Union to regulate the environmental pollution of electronic and electrostatic radiation from displays. Commonly used are TC092, TC095, TC099 and TCO03. TCO markings are not only well known in the display industry, but almost all major brands are labeled with the TC0. Among them, the most stringent one is TC 003, which is the most stringent display manufacturing standard in the TCO series. In terms of CRT, the uniformity of brightness and screen is more stringent. TCO01 specifies the electromagnetic radiation, ergonomics and environmental protection of mobile phones. A new quality and environmental label TCO ’〇5 is also available for the notebook -4- M333583 computer and desktop computer. With the increasing demand for low-power, low-emission display devices, TC0 certification has become an important reference for consumers when purchasing display products. In order to make the liquid crystal display conform to the TC 0 certification, and the liquid crystal display is used in different fields, the backlight module manufacturers have different requirements, such as TV requiring high brightness, wide viewing angle, or NB confidentiality requiring narrow viewing angle, and even It is necessary to solve the different needs of miira (referring to the phenomenon of uneven brightness caused by uneven brightness of the display), light collection, thinness, etc., so the backlight module manufacturers began to require the film manufacturers to provide different optical film combinations, or have multifunctional functions. Composite optical film to meet the different functional requirements of liquid crystal displays. [New content] The creator of the present invention has created a light field adjustment component comprising a first optical layer 1 and a second optical layer 2 on the first optical layer 1 through extensive and intensive research. A third optical layer 3 is positioned above the second optical layer 2. The main purpose of this creation is to provide a light field adjustment component that can change the path of light to form different light field distributions, which can solve different light field requirements of different backlight module manufacturers, such as collecting light, solving mura problems or The need for a wide viewing angle. Moreover, the light field adjustment component of the creation is thin, light in weight, simple in process, and high in yield, so it is more in line with market requirements and more competitive. -5- M333583 [Embodiment] Please refer to FIG. 1 , which is a preferred embodiment of the present invention. The light field distribution adjusting component 1 includes a first optical layer 1 and a second optical layer 2 Above the first optical layer 1, and a third optical layer 3, above the second optical layer 2. Referring to FIG. 2, the first optical layer 1 used in the present invention may be any optical substrate, which may be a diffusion substrate or a reflective substrate, wherein the diffusion substrate is generally classified into an internal diffusion type and a surface diffusion. Type, while the internal diffusion type consists of polycarbonate (polycarbonate, PC) resin, polystyene or polymethyl methacrylate (PMMA) resin containing organic or inorganic diffusion particles. Extrusion or coating molding. The surface diffusion type is coated on the surface of the substrate with a coating material containing diffusion particles or by embossing to have a lens diffusion structure to have a light diffusion effect. The diffusion substrate is, for example but not limited to, the diffusion plate 11 as shown in Figs. 2a to 2e, the diffusion film 12, the high diffusion diffusion films 13 and 14, the microlens film 15, or a combination thereof. The first optical layer 1 used in the present application may be a reflective substrate, wherein the reflective substrate may be specularly reflected as shown in Fig. 3a, diffusely reflected as in Fig. 3b or highly diffusely reflected as shown in Fig. 3c. The diffuse reflection film is a single layer or a multilayer structure, and one or more layers may be foamed plastic or plastic containing particles or a combination of the two. The reflection effect of the optical film of the present invention is mainly achieved by using foamed plastic or particles. The types of the above particles are well known to those skilled in the art and may be organic or inorganic particles. The reflective base-6-M333583 material of the present invention may also be a high-diffusion reflective film which is coated on at least one side of the reflective substrate with a coating of high-diffusion particles characterized by ASTM D 5 2 3 standard methods, to 60. When the incident angle is projected, the measured gloss is less than 1 〇 %. Specular reflection is to deposit one or more layers of metal on a conventional substrate. Please refer to FIG. 1. The second optical layer 2 of the present invention comprises a dimming structure composed of a medium having air and a refractive index different from that of air. twenty one. The dimming structure 21 allows light to pass through two media having different refractive indices and microstructures, causing refraction and scattering, thereby changing the angle of light emitted or reflected from the first optical layer, The dimming structure of the micro-convex is different, and the angle of the light entering the third optical layer is also different. Therefore, the light field distribution of the light field adjusting component of the present invention is also more diverse. The third optical layer 3 used in the present creation may be any transparent substrate or any optical substrate known in the art to which the present invention pertains. For example, the transparent substrate 31 is as shown in Fig. 4a, which may be composed of glass or a polymer resin. The polymer resin may be, but not limited to, a polyacrylate resin, a polycarbonate, a polystyrene, a polyolefin, a cellulose acetate, a polyimide resin or a polyester resin. Preferred are polyester resins such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). The third optical layer 3 may also be an optical substrate such as, but not limited to, the diffusion film 32, the concentrating film 33, the microlens film 34, the polarization recovery film 35 shown in Figs. 4b to 4e, or a combination thereof. The dimming structure 21 used in the second optical layer 2 of the present invention is located on the lower surface of the third optical layer 3, please refer to FIG. 5, which is for example but not limited to, as shown in FIG. 5 a to FIG. The columnar structure 2 1 1 - 2 1 3 (ie, 'triangular columnar shape), curved columnar structure 2 1 4-2 1 6 (ie, the peak or valley of the columnar structure or both of them are in the form of a circular arc ), 1 body angle structure 217, bead structure 218 or lenticular structure 2 1 9 and the like. The geometric properties of the height, width, apex angle and radius of curvature of the dimming structure of the present invention are further illustrated as shown in FIG. According to the present invention, the height of the micro-convex dimming structure refers to the distance between the top of the geometric dimming structure and the lower surface of the substrate, and the height thereof is in the range of 〇·ι μη to 850 μm, and each other They may be the same or different. Width means that the distance between the two valleys of the geometric dimming structure is in the range of 20 μηι to ΙΟΟΟμιη. The apex angle of the 稜鏡 structure and the solid angle structure is in the range of 60° to 178°. The radius of curvature of the curved structure, the bead structure, and the top of the lenticular structure is in the range of 7 〇 μηι to 1.5 cm. Referring to FIG. 5a to FIG. 5f, the columnar structures 211-213 or the curved columnar structures 214-216 used in the present invention may be regular or irregular columnar structures (ie, adjacent columnar structures, Height, apex angle may be the same or different), linear or non-linear columnar structure (ie, a columnar structure varies nonlinearly along its length, such as a curve change), adjacent and non-parallel Columnar structures, symmetrical or asymmetrical columnar structures or groups of combinations of the above structures. Referring to FIG. 5 g to FIG. 5 i , the solid angle structure 2 17 , the bead structure 2 18 or the lenticular structure 2 1 9 used in the present invention may be formed of the same or different size 'regular or irregular arrangement. Dimming structure. The solid angle structure 2 17 may be a triangular cone, a quadrangular pyramid, a polygonal pyramid or a combination thereof, and the tip may be a sharp angle, an arc, a plane, or a combination thereof. The beaded structure 2丨8 or the lens -8 - M333583-like structure 2 1 9 cross-section may be a perfect circle, an ellipse, an irregular arc or a combination thereof. The light field adjustment component of the creation has the function of light field adjustment, and can be applied to the backlight module of the liquid crystal display to meet the different functional requirements of different liquid crystal displays and meet the TCO requirements. Fig. 7 to Fig. 10 are based on an automatic angle goniophotometer (Gonio Photometer) [GP-200, Murakami color research laboratory] with an incident angle of 0. The incoming light is measured, and the different light field distribution maps formed by the light field adjusting components of the present invention are determined. 7 is a light-diffusion field distribution diagram of a high-diffusion diffusion film, and FIG. 8 is a light-light field distribution diagram of a combination of a high-diffusion diffusion film and a prism or a high-diffusion diffusion film and a curved structure, and FIG. 9 is a diagram. The light-diffusion field distribution of the high-diffusion diffusion film combined with the apex angle of 66 is shown in Fig. 1. The lanthanide is the distribution of the light-diffusion field of the high-diffusion diffusion film and the apex angle of 1 〇. However, the above embodiments are merely illustrative of the principles of the present invention and its effects, and are not intended to limit the present invention. Modifications and variations that are readily apparent to those skilled in the art are included within the scope of the disclosure and the scope of the appended claims. Therefore, the scope of protection of this creation should be as listed in the scope of the patent application described later. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of an embodiment of the present invention. 2a to 2e are schematic views of an embodiment of the creation. Figures 3a to 3c are schematic views of reflected light. -9 - M333583 Figures 4a to 4e are schematic views of an embodiment of the creation. Figures 5a through 5i are schematic illustrations of embodiments of the present invention. Fig. 6 a to 6 b are the height, width, apex angle and radius of curvature of the dimming structure of the present invention. FIG. 7 is a light field distribution diagram of the light field adjusting component of the present invention. FIG. 8 is a light field adjusting component of the present invention. Light field distribution map. FIG. 9 is a light field distribution diagram of the light field adjustment component of the present invention. Figure 1 〇 is the light field distribution of the light field adjustment component of the creation. [Explanation of main element symbols] I: First optical layer 2: Second optical layer 3: Third optical layer II: Diffuser plate 1 2: Diffusion film 13: High diffusivity diffusion film 1 4: High diffusivity diffusion film 1 5: microlens film 2 1 : dimming structure 3 1 : transparent substrate 32 : diffusion film 33 = concentrating film 34 : microlens film 3 5 : polarized light recovery film-10- M333583 1 Ο 0 : light field distribution adjusting component 21 1_213 : Columnar structure 2 14-2 16 : Curved columnar structure 2 1 7 : Solid angle structure 2 1 8 : Beaded structure 2 1 9 : Lens structure
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