M333584M333584
八、新型說明： 【新型所屬之技術領域】 之一可供在開展顯示區域範圍内進行光控制 特疋而言，本創作係有關於可於影像顯示裝置顯 不區域糊内進行光控制之—種無粒子微結構光學膜。 【先前技術】 具挽性但又具足_性賊之片形贿的光_(optical f_，在多種平賴M(flat_panel displ㈣中具有各種不同的用 途。典型的絲觀财可織關示^(LC晴裝置制之擴散 (她ser) ’增光(li幽_nce_t)，及偏光⑽㈣㈣等各種膜 片。擴散膜係用於將LCD顯示器及電視之背光模組㈣琴 m〇dule)t^^#f *^(CCFL，cold-cathode fluorescent lamp)^f 之光馳化之用it。她之T ’增細職來將lcd中各像 素所發出之影像顯示光，依所需程度而予以收攏。 為了達成此類光學默絲控之目的，擴細及增光膜已發展 出不論是規則或不規光學構形的微形结構，明符合其各自所需求 之光學性能。鱗光學微縣構之實f尺度典型係在微米的尺度範 圍。在典型用途的光學膜片上，此等微形結構的數量可達數以十萬 至百萬計的數目。在LCD顯示裝置之中，為令其所顯現之影像符 合各種工業標準，不論是為光之擴散或收攏之目的，此類微米尺度 專及之「微結構」乃是不可或缺者。 為了達成其光學設計功能，習知之此類光學膜中應用了具光散 射性之粒子(light-scattering particles or beads)。此些粒子通常是為具 5 M333584 $年丨項 高透光性，規則(例如，球形)或不規則形狀的不同大小尺立:^ 例如，在美國專利5,852,514號的”Light diffusion composite”乙案之 中Toshima專人揭示了 一種光擴散材料(light diffusion material)， 其具有形成於一透明基底表面上的一層光擴散層。該光擴散層係利 用將樹脂性質的光擴散粒子内含(embed)於一層透光的基底樹脂層 (layer of base resin)中而形成。 在美國專利5,903,391號的”(^&1色1111，，乙案之中，丁〇511丨111&等 人揭示了另一種光學膜之結構，其光散射粒子係局部地埋藏於一樹 脂層之中，以便其相鄰粒子之間的彎曲表面亦可發揮光擴散之作 用。 另一方面，中華民國新型專利M3〇7764號的「複合光學膜」 乙案之中，許等人揭示了將光之擴散及增亮兩種作用結合在單獨一 片之中的-種複合光學膜>；。許等人之此種複合光學膜片，包含了 附貼於具内含絲射粒子的-光擴散層其—表面上的，諸如典型直 角頂脊形微結構(ridge_shaped microstructure)的光增亮層。 不過，此祕时域大㈣财尺寸等級歧^粒子的習 知光，散層之製作，需要處理在其_類如紫外線照射而硬化定 性之所，如何將其粒子均自混合於其_縣底樹軸的問題。 要令光㈣粒子完全均勻地料於_雜_，是需要花費相 :的功夫及時_。此外’光之散射功能所需之微細粒子成本昂 責’常構成了光學膜片的整體材料成本_著部份。 【新型内容】 因此’本創作之-目的即在於提供具有—或以上無粒子微結 M333584 構之一種光學膜 修正' 補允 $年r月l| _(> |丨_擊私…_ ||euj内 含有本子微結構光學膜，其包 該微結婦ϋ奸單Ur獅構。对料置其特徵為 j作亦提供—種絲讀結構絲晚含林軸於一底 之一、面上的二微結構，其中該二微 -無粒子單-構造。 7/、中之係為 本創作亦提供一種無粒子微結構光學膜，其具有各黏附於一 底材之-表面上的二微結構，其中該二微結構之至少1中之—係 為一擴散微結構，而其另—則為—增亮微結構，且其ΐ該二微結 構之至少其中之—係為—無粒子單_構造。 【實施方式】 圖1為依據本創作之-較佳實施例，具一單一擴散微結構之 -光學膜之賊面示細。目丨中之辨膜⑽所顯現的，是在 一底材110之一表面112上具有一擴散微結構的，本創作之一擴散 光學膜之橫截面構造。如崎示，擴散微結構12G可為，例如， 可將光朝向圖中大致向上方向加以散射的，具不酬表面構造m 的一個隨機表面。 如同本技藝中所習知，微結構120的隨機構形表面構造層可 以利用，例如，具所需微結構120之負構形(negative)的母輥輪 (masterroller)’而移轉至塗佈於底材12〇頂表面112上的_層黏性 樹脂上，且其被輥壓移轉過來的表面構造可以利用，例如，以紫 7 M333584Eight, new description: [New technical field] One of the areas that can be used to carry out light control in the display area, this creation is about the light control in the display area of the image display device - A particle-free microstructured optical film. [Prior Art] The light of the temperamental but sinister thief-like _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Diffusion of LC-clearing device (she ser) 'Enhanced (li 幽_nce_t), and polarized light (10) (four) (four) and other diaphragms. Diffusion film is used for LCD display and TV backlight module (4) Qin m〇dule) t^^ #f *^(CCFL,cold-cathode fluorescent lamp)^f The light is used for it. Her T's intensive job is to display the light from the pixels in the LCD, and to close it according to the required degree. In order to achieve such optical wire control purposes, the expansion and brightness enhancement film has developed a micro-structure that is either regular or irregular optical configuration, which clearly meets the optical properties required by each of them. The real f-scale is typically in the micrometer range. On typical optical films, the number of such microstructures can reach hundreds of thousands to millions. In LCD display devices, The images appearing meet various industry standards, whether for the spread or collection of light Such micro-scales are indispensable for the "micro-structure". In order to achieve its optical design function, light-scattering particles or beads are used in such optical films. These particles are usually of different sizes with a high transmittance of 5 M333584, a regular (eg spherical) or irregular shape: ^ For example, in the "Light diffusion composite" case of US Patent 5,852,514 Among them, Toshima has disclosed a light diffusion material having a light diffusion layer formed on the surface of a transparent substrate. The light diffusion layer is embed by light diffusion particles having resin properties. Formed in a layer of a light-transmitting layer of base resin. In U.S. Patent No. 5,903,391, "(^& 1 color 1111, item B, Ding 511 丨 111 & et al. In the structure of the optical film, the light-scattering particles are partially buried in a resin layer so that the curved surface between adjacent particles can also function as a light diffusion. In the case of the "composite optical film" of the new national patent M3〇7764, Xu et al. revealed a kind of composite optical film that combines the two functions of light diffusion and brightening in a single piece. Such a composite optical film of the type comprising a light-brightening layer attached to the surface of the light-diffusing layer containing the inlaid particles, such as a typical ridge-shaped microstructure. However, this secret time domain is large (four) financial size classification of the particles of the conventional light, the production of the scattered layer, need to deal with its _ class such as ultraviolet radiation and harden the qualitative, how to mix its particles into its _ county bottom tree The problem with the axis. In order to make the light (four) particles completely uniform in the _ miscellaneous _, it is necessary to spend the same time: _. In addition, the cost of fine particles required for the light scattering function often constitutes the overall material cost of the optical film. [New content] Therefore, the purpose of this creation is to provide an optical film correction with or without particle micro-junction M333584. Supplementary $年月月 l| _(> |丨_打私..._ | |euj contains the substructured micro-structured optical film, which contains the micro-knotted women's scorpion and single Ur lion structure. The material is also characterized by j for the provision of a silk-reading structure silk with a forest shaft on one of the bottom, surface The second microstructure, wherein the second micro-particle-free mono-structure. 7/, Zhongzhi is also a particle-free micro-structured optical film, which has two adhered to the surface of a substrate. a microstructure, wherein at least one of the two microstructures is a diffusion microstructure, and the other is a brightness enhancement microstructure, and at least one of the two microstructures is - no particles [Embodiment] FIG. 1 is a thief surface of an optical film having a single diffused microstructure according to a preferred embodiment of the present invention. The discriminating film (10) in the catalogue is A cross-sectional structure of a diffusing optical film of one of the substrates 110 having a diffusing microstructure on one surface 112 As can be seen, the diffusion microstructure 12G can be, for example, a random surface that can scatter light in a generally upward direction in the figure with an unrecognized surface texture m. As is known in the art, the microstructure 120 The mechanically shaped surface structural layer can be transferred to the _ layer adhesive applied to the dome surface 112 of the substrate 12 using, for example, a negative masterroller' having a negative microstructure of the desired microstructure 120. On the resin, and the surface structure that is transferred by roll pressing can be utilized, for example, with violet 7 M333584
外線照射而定型硬化成形。可利用uv進行硬化的樹脂係為硬化 後具高透光性的多種樹脂，其包括，例如，丙烯酸樹脂(acrylic resin) 及環氧樹脂(epoxy resin)等。適合作為底材110的材料包括，例如， 聚對苯二甲酸乙二g旨(polyethylene terephthalate，PET)，聚丙浠 (polypropylene ’ PP)，聚曱基丙稀酸曱醋(p〇iymethyi methacry ， PMMA)，三醋酸纖維（triaeetate celiui〇se，TAC)及聚碳酸醋 (polycarbonate，PC)等材料。 圖2為依據本創作一較佳實施例，具雙擴散微結構120及140 之另一光學膜200之橫截面示意圖。本創作此一說明性質之光學 膜200具有分別黏附於底材11〇之頂112及底表面144上之兩個光 擴散微結構層120及140。頂擴散微結構120可為，例如，與圖j 中所顯示之本創作光學膜100之對應相同或相類似之隨機構造。 光學膜200之底擴散微結構14〇可為，例如，與頂擴散微結 構120相同或相類似續機構造。頂及底兩光擴散微結構層12〇 及140之間的構造差異，在面對不同平面顯示㈣途的各種不同 擴散性能需求時，可作為設計上的彈性空間。 圖3為依據本創作又另一較佳實施例，亦具雙擴散微結構之 又另一光學膜300之橫截面示意圖。絲膜綱，除了其底材21〇 的頂312及底表面314係經加工處理以具備預設程度的粗趟度以 外，其整體架構與圖2之光學膜細近乎相同。如同f於本技藝 者所可理解’此種表粗糙度可有利於外部黏覆微結構層(圖3中之 U0及140)對底材的附著性。此外，此表面粗縫度亦有利於光^ 8 M333584 p年丨 >月(External beam irradiation and shaping hardening. The resin which can be cured by uv is a resin having high light transmittance after curing, and includes, for example, an acrylic resin, an epoxy resin, and the like. Suitable materials for the substrate 110 include, for example, polyethylene terephthalate (PET), polypropylene 'PP, and polyacrylic acid acetonide (PMMA). ), triacetate (eliecate celiui) (TAC) and polycarbonate (PC) and other materials. 2 is a cross-sectional view of another optical film 200 having dual diffused microstructures 120 and 140 in accordance with a preferred embodiment of the present invention. The optical film 200 of this nature has two light-diffusing microstructure layers 120 and 140 adhered to the top 112 and bottom surface 144 of the substrate 11 respectively. The top diffusion microstructure 120 can be, for example, a random configuration that is identical or similar to the counterpart of the inventive optical film 100 shown in FIG. The bottom diffusion microstructure 14 of the optical film 200 can be, for example, the same or similar to the top diffusion microstructure 120. The structural differences between the top and bottom light diffusing microstructure layers 12〇 and 140 can be used as design elastic spaces when faced with various diffusion performance requirements of different plane display (4). 3 is a cross-sectional view of still another optical film 300 having a double diffused microstructure in accordance with yet another preferred embodiment of the present invention. The silk film, except that the top 312 and the bottom surface 314 of the substrate 21 are processed to have a predetermined degree of roughness, the overall structure is nearly the same as that of the optical film of Fig. 2. As can be appreciated by those skilled in the art, such surface roughness can facilitate adhesion of the outer bonded microstructure layer (U0 and 140 in Figure 3) to the substrate. In addition, the surface roughness is also beneficial to the light ^ 8 M333584 p years > month (
之主要功能性。 圖4為依據本創作一較佳實施例，具一擴散微結構及一增光 微結構之一光學膜之橫截面示意圖 。若與圖3之光學膜300相比 車父’光學膜400之頂微結構係為具習知凸脊形構形之光增亮微結 構層420。與光學膜100，200及300相比較，圖4之光學膜400 係屬能夠同時提供光擴散糊化及光收攏增亮兩種功能的複合式光 學膜。The main functionality. 4 is a cross-sectional view of an optical film having a diffusion microstructure and a brightness enhancement microstructure in accordance with a preferred embodiment of the present invention. When compared to the optical film 300 of Figure 3, the top microstructure of the optical film 400 is a light-enhancing micro-structure layer 420 having a conventional convex ridge configuration. Compared with the optical films 100, 200 and 300, the optical film 400 of Fig. 4 is a composite optical film capable of providing both light diffusion gelatinization and light gathering and brightening.
本創作光學膜100，200，300及400，不論其係具有單一或雙 面微結構，或係供光之擴散糊化或光之收攏增亮之功能，較之習 知技術者顯具較低成本錄練作之優點。其用以製成微結構的 原材料樹脂不再需要進行將光散射粒子均勻混入的處理步驟。諸 如在同一片光學膜中，或在不同製造批次的光學膜之間的光學性 能均一性已不再形成問題。 雖然本創作已配合圖式以較佳實施例揭示說明如上，然其並 非用以限定補作。_此，任何熟習此技藝者，在不脫離本創 作精神範圍之情況下，當可進行各類更動與變化，因此本創作之 保4範圍當以後附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1為依據本創作，具-單一擴散微結構之一光學膜之橫截 面示意圖。 圖2為依據本創作，具雙擴散微結構之另一光學膜之橫截面 示意圖。 9 M333584 >年m|日 圖3為依據本創作，亦具雙擴散微結構之又另_ 二 u予勝之橫 截面示意圖。 圖4為依據本創作，具一擴散微結構及一增光微結構之一光 學膜之橫截面示意圖。 【主要元件符號說明】 110,210 底材 112, 114 底材處理層The optical film 100, 200, 300 and 400 of the present invention, whether it has a single or double-sided microstructure, or a function of diffusing gelatinization or lightening and brightening of light, is lower than that of the prior art. The advantages of cost recording. The raw material resin used to form the microstructure no longer requires a processing step of uniformly mixing the light-scattering particles. Optical performance uniformity, such as in the same optical film, or between optical films of different manufacturing lots, no longer poses a problem. Although the present invention has been described above with reference to the preferred embodiments, it is not intended to limit the application. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view of an optical film having a single diffusion microstructure according to the present invention. Figure 2 is a schematic cross-sectional view of another optical film having a double diffused microstructure in accordance with the present teachings. 9 M333584 >Year m|Day Figure 3 is a cross-sectional view of another _ _ u u winning according to this creation. 4 is a schematic cross-sectional view of an optical film having a diffusion microstructure and a brightness enhancement microstructure in accordance with the present teachings. [Main component symbol description] 110,210 Substrate 112, 114 Substrate treatment layer
120, 140, 420 光學塗佈層 122, 142, 422 光學設計結構層120, 140, 420 optical coating 122, 142, 422 optical design structure