200526995 五、發明說明（1) 一、 【發明所屬之技術領域】 本發明係有關於一種擴散板結構，特別是有關於一種 可增加穿透率之擴散板之結構。 二、 【先前技術】 液晶顯示器（Liquid Crysta 1 Disp1 ay， LCD)為非自 發光的顯示裝置，須要藉助背光源才能達到顯示的功能。 在固定背光源系統下，擴散膜透過率的高低會直接影響到 光源的利用效果，進而影響到液晶顯示器顯像品質，其在 液晶顯示器之模組中是為一相當重要的零組件。高品質、 大尺寸的液晶顯示器，必須有高性能的背光技術配合，因 此背光技術的高性能化，例如高亮度化、低成本化、低耗 電化、輕薄化等等，其在液晶顯示器之整體性能的表現中 扮演著非常重要的角色。 液晶顯示器中的背光模組一般包含光源（即冷陰極管 )、反射板、導光版及擴散板等等，其中，擴散板的功能 係使入射光可以有效的被分散，並提供液晶顯示器一個均 勻的面光源。一個傳統的擴散板包含一個透明基板及一擴 散層（d i f f u s i n g 1 a y e r )，此擴散層係形成於透明基板之 表面上，且此擴散層含有散射子（s c a 11 e r s )之球型材料粒 子，而擴散板的擴散效果主要是由於擴散層中的黏接劑 (binder)與填充的散射子之間的折射率差異所造成。散射 子分散在擴散層之間，當光線經過擴散層時，會不斷的在200526995 V. Description of the invention (1) 1. [Technical field to which the invention belongs] The present invention relates to a structure of a diffusion plate, and more particularly to a structure of a diffusion plate that can increase transmittance. 2. [Previous Technology] Liquid crystal display (Liquid Crysta 1 Disp1 ay, LCD) is a non-self-luminous display device, which requires a backlight to achieve the display function. Under the fixed backlight system, the transmittance of the diffuser film will directly affect the utilization of the light source, and then affect the display quality of the liquid crystal display. It is a very important component in the module of the liquid crystal display. High-quality, large-sized liquid crystal displays must be supported by high-performance backlight technology. Therefore, the high-performance backlight technology, such as high brightness, low cost, low power consumption, thinness, etc. It plays a very important role in the performance of the overall performance. The backlight module in a liquid crystal display generally includes a light source (that is, a cold cathode tube), a reflective plate, a light guide plate, a diffuser plate, and the like. Among them, the function of the diffuser plate enables the incident light to be efficiently dispersed and provides a liquid crystal display. Uniform area light source. A traditional diffusion plate includes a transparent substrate and a diffusion layer (diffusing 1 ayer). The diffusion layer is formed on the surface of the transparent substrate, and the diffusion layer contains spherical material particles of scatterers (sca 11 ers), and The diffusion effect of the diffusion plate is mainly caused by the refractive index difference between the binder in the diffusion layer and the filled scatterers. Scatterers are scattered between the diffusion layers. When light passes through the diffusion layers,
200526995 五、發明說明（2) 兩折射率相異的介質中穿過，此時光線同時產生折射、反 射與散射的現象，即造成光學擴散的效果。 隨著平面顯示器的快速發展，高品質之顯示晝質佔有 不可或缺之角色，其中，+面顯示器之亮度表現為重要的 一環’而抗反射膜在提升亮度表現中係為重要的應用之一 。抗反射膜的作用在於減少反射而增加顯示元件的光穿透 度’其原理主要是利用當入射波長通過抗反射塗層時會有 穿透及反射之特性，而部分入射波長通過，部分入射波長 反射’藉由控制反射塗層之折射率與厚度的乘積為入射波 長1 /4λ的奇數倍效應，而產生干涉並獲得反射效果。對 液晶顯示器面板而言，每增加1%反射率即代表損失1%穿 透率’亦即損失1%亮度，因此液晶顯示器面板必須盡可 能的提高穿透率，同時降低其反射率。 傳統之擴散板結構係以第一圖簡述如下。參閱第一圖 ’提供一透明基板1 〇 1，此透明基板1 〇 1之材質可為丙烯酸 (a c r y 1 i c )樹脂薄板，例如均勻聚合物（h 〇 m ο ρ ο 1 y m e r )之聚 曱基丙烯酸曱g旨（polymethyl methacrylate)，在此透明 基板101上沉積一擴散層 （diffusing layer)，此擴散層 包含一具有聚合性（polymerizable )之黏接劑（b i n d e r ) 1 0 3 及複數個球形形狀的散射子1 0 5。形成聚合性之黏接劑1 〇 3 係使用包含以一烧基聚丙烯酸酯（ρ ο 1 y a 1 k y 1 m e t h a c r y 1 a t e )為主要官能基之高分子聚合物，例如聚甲200526995 V. Description of the invention (2) Passing through a medium with two different refractive indices, at this time, the light has the phenomenon of refraction, reflection and scattering at the same time, which results in the effect of optical diffusion. With the rapid development of flat-panel displays, high-quality displays have an indispensable role in daytime quality. Among them, the brightness of + -plane displays is an important part, and anti-reflection films are one of the important applications in improving the brightness performance. . The role of the anti-reflection film is to reduce reflection and increase the light transmittance of the display element. Its principle is mainly to use the characteristics of penetration and reflection when the incident wavelength passes through the anti-reflection coating, and part of the incident wavelength passes and part of the incident wavelength. "Reflection" generates interference and obtains the reflection effect by controlling the product of the refractive index and the thickness of the reflective coating to be an odd multiple of the incident wavelength 1 / 4λ. For a liquid crystal display panel, every 1% increase in reflectivity means a loss of 1% of transmittance ’, that is, a loss of 1% of brightness. Therefore, a liquid crystal display panel must increase the transmittance as much as possible while reducing its reflectance. The traditional diffuser structure is briefly described below with the first figure. Please refer to the first figure 'provide a transparent substrate 1 〇1, the material of the transparent substrate 1 〇1 may be an acrylic (acry 1 ic) resin sheet, such as a polymer based on a homopolymer (h 〇m ο ρ ο 1 ymer) Polymethyl methacrylate. A diffusion layer is deposited on the transparent substrate 101. The diffusion layer includes a polymerizable binder 1 0 3 and a plurality of spherical shapes. The scatterers 1 0 5. The polymerizable adhesive 1 0 3 is a high molecular polymer containing monobasic polyacrylate (ρ ο 1 y a 1 k y 1 m e t h a c r y 1 a t e) as the main functional group, such as polymethyl
200526995 五、發明說明（3) 基丙稀酉复曱酯（polyethyl methacrylate)或聚甲基丙稀g复 丙 6旨（polypropyl methacrylate)等等 〇 散射 1 Π 〇Γ 含任何具有折射率（refractlve lndex)之物 率相異於透明基板1 ο 1、黏接劑1 〇 3及丙馀、 /、 ，直耑鼾芊1 π々从所1炎-π Α 柯峻樹脂薄膜1 0 7 具政射子1 0 5之材質可為乳化矽、氧化 oxide)、氧化鈦（titanium 〇xide)等等蟑（magnesium 大小可在1至1 〇〇微米之間。聚乙烯樹t 1而其粒子之尺寸 擴散層之上，其與透明基板1〇1具有s薄暝107係形成於 j之組成。 時 ▲入射光通過包含有散射子 ，由於散射子105及黏接劑103之拼射洛妾劑1〇3之擴散層 :f在通過時會發生折射、反射及散射::不同，因此入射 ^么，到被擴散的效果，但此習知之庵埤現象，亦即入射 田=阿丄其穿透率約只可到達8 5% ，因二被其光線之穿透 古鬲，進而影響一顯示元件，例如^ ，使得光線的使 冗度表現。 ’夜晶顯示器的整體 方， 用¥知之擴散板結構而無法挺a 率摆^此亟待提供一改良之擴散板結構入射光線之穿透 率k局’並增加顯示器之亮度。 冓，使得光線之穿透200526995 V. Description of the invention (3) Polyethyl methacrylate or polypropyl methacrylate, etc. 0 Scattering 1 Π 〇Γ Contains any refractlve lndex ) 'S rate is different from that of transparent substrate 1 ο 1, adhesive 1 〇3 and acrylic, /,, straight 耑 鼾 芊 1 π々 Cong 1 Yan-π Α Ke Jun resin film 1 0 7 The material of the sub-105 can be emulsified silicon, oxide, titanium oxide, etc. The size of the magnesium can be between 1 and 100 microns. The size of the particles of the polyethylene tree t 1 is diffused. Above the layer, it and the transparent substrate 101 have a composition of s thin 暝 107 series formed at j. ▲ ▲ incident light passes through the inclusion of scatterers, because the scatterers 105 and the adhesive 103 are shot together. Diffusion layer of 3: f will undergo refraction, reflection, and scattering when passing through :: different, so incident ^ ?, to the effect of being diffused, but the phenomenon of this conventional phenomenon, that is, incident field = Ah, its transmittance Only about 8 5% can be reached, because two are penetrated by the ancient light, which affects a display element, such as ^ Make the light redundant performance. 'The overall side of the night crystal display, with a diffuser structure known to the \ can not support a rate pendulum ^ urgently need to provide an improved diffuser structure penetrating rate of incident light k' and increase the display Brightness, 冓, makes the light penetrate
— • ^ %門容】 構， 反射 # ^ f發明之一目的係提供一擴 只月反之下方形成一具有低反射 其中係包含於 層，此抗反射— • ^% 门 容] structure, reflection # ^ f One of the objects of the invention is to provide an expansion, but on the other hand, a low reflection is formed below, which is included in the layer, this anti-reflection
200526995 五、發明說明（4) 層可使入射光線的穿透率提高，並進而增加顯示器之亮度 表現。 本發明之另一目的係提供一擴散板結構，其中係包含 提供一具有奈米級粒子之熱固性樹脂，其可利用奈米粒子 及熱固性樹脂具有不同折射率之特性，進而提供顯示器一 均勻之面光源，並改善背光模組之性能。 根據以上所述之目的，本發明係提供一改良之擴散板 ，首先，提供一透明基板，例如一塑膠樹脂基板，其材質 可為聚碳酸酯、聚苯乙烯、聚烯、聚醚、聚酯、聚醯胺、 聚苯硫醚、聚醚酯、聚氯乙烯或聚甲基丙烯酸樹脂等等。 在此透明基板之上方表面係形成一擴散層，此擴散層包含 複數個球狀顆粒及一主材料，其中複數個球狀顆粒之材質 為一有機高分子，例如聚曱基丙烯酸曱酯，一無機材料， 例如二氧化鈦（T i 0 2)、二氧化矽（S i 0 2)或玻璃珠等，而主 材料亦為一有機高分子，例如胺基曱酸乙酯樹脂、醋酸乙 烯酯樹脂、氯乙烯樹脂、苯乙烯樹脂或聚乙烯樹脂等等， 同時，此擴散層可為一楔形狀或一不規則狀。在透明基板 之下方形成一具有低反射率之抗反射層，此抗反射層係包 含一熱固性樹脂及複數個奈米級之粒子，此熱固性樹脂及 複數個奈米級之粒子係利用乙醇為一溶劑分散，且以單一 製程之方式使兩者可任意地混合，例如一濕式製程或一乾 式製程。最後，將此具有低反射率之抗反射層塗佈或蒸鍍200526995 V. Description of the invention (4) The layer can increase the transmittance of incident light and further increase the brightness performance of the display. Another object of the present invention is to provide a diffuser plate structure, which includes providing a thermosetting resin having nano-scale particles, which can utilize the characteristics of nano-particles and thermosetting resins having different refractive indices, thereby providing a uniform surface of the display. Light source and improve the performance of the backlight module. According to the above purpose, the present invention provides an improved diffusion plate. First, a transparent substrate, such as a plastic resin substrate, is provided. The material can be polycarbonate, polystyrene, polyene, polyether, polyester. , Polyamidoamine, polyphenylene sulfide, polyetherester, polyvinyl chloride or polymethacrylic resin, etc. A diffusion layer is formed on the upper surface of the transparent substrate. The diffusion layer includes a plurality of spherical particles and a main material. The material of the plurality of spherical particles is an organic polymer, such as polyfluorenyl acrylate. Inorganic materials, such as titanium dioxide (T i 0 2), silicon dioxide (S i 0 2) or glass beads, etc., and the main material is also an organic polymer, such as ethyl amino resin, vinyl acetate resin, Vinyl chloride resin, styrene resin or polyethylene resin, etc. Meanwhile, the diffusion layer may have a wedge shape or an irregular shape. An anti-reflection layer having a low reflectance is formed below the transparent substrate. The anti-reflection layer contains a thermosetting resin and a plurality of nanometer-sized particles. The thermosetting resin and a plurality of nanometer-level particles use ethanol as a The solvent is dispersed and the two can be arbitrarily mixed in a single process, such as a wet process or a dry process. Finally, the anti-reflection layer having low reflectance is coated or evaporated.
200526995 五、發明說明（5) 在透明基板之下方表面上。 四、【實施方式】 接下來是本發明的詳細說明，下述說明中對製程與結 構之描述並不包括製作的完整流程。本發明所沿用的現有 技藝，在此僅做重點式的引用，以助本發明之闡述。 本發明之内容可經由下述一較佳具體實施例與其相關 圖示（第二圖至第三圖）的闡述而揭示。參閱第二圖，首先 ’提供一具有高透明度及高機械強度之透明基板2 〇 1，例 如一塑膠樹脂基板，此透明基板2 〇 1之厚度範圍在2 5 - 1 5 0 微米（m i c r 〇 m e t e r，// m )之間，此外，此塑膠樹脂薄膜之 透明基板201之材質可為聚碳酸g旨（p〇iyCarb〇na*te)、聚苯 乙烯（polystyrene)、聚 g旨（p〇lyester)、聚烯 (polyol ef in)、聚醚（p〇lyether)、聚苯乙烯、聚醯胺 (polyamide)、聚本硫峻（polyphenylenesulfide)、聚醚 酿（polyether-ester)、 聚酉旨（polyester)或聚曱基丙烯 酸酯（polymethacrylate)等等。 接著’在此透明基板2 0 1上形成一擴散層，此擴散層 係包含複數個球狀顆粒2 0 5並捧雜在一主材料（h 〇 s t material)層2 0 3中，複數個球狀顆粒2 0 5之材質係為一有 機高分子材料或一無機材料，例如聚甲基丙烯酸曱酯 (polymethyl methacrylate, PMMA)、二氧化鈦（Ti02)、200526995 V. Description of the invention (5) On the lower surface of the transparent substrate. 4. [Embodiment] The following is a detailed description of the present invention. The description of the process and structure in the following description does not include the complete process of production. Existing techniques used in the present invention are only cited in detail here to help explain the present invention. The content of the present invention can be disclosed through the following description of a preferred embodiment and related diagrams (second to third figures). Referring to the second figure, first, 'provide a transparent substrate 2 〇1 with high transparency and high mechanical strength, such as a plastic resin substrate. The thickness of the transparent substrate 2 〇1 is in the range of 2-150 micrometers (micr 〇meter). (// m), in addition, the material of the transparent substrate 201 of this plastic resin film may be polycarbonate (polycarbonate), polystyrene (polystyrene), polymethyl (polyvalent) ), Polyefene, polyether, polystyrene, polyamide, polyphenylenesulfide, polyether-ester, polyether ( polyester) or polymethacrylate. Next, a diffusion layer is formed on the transparent substrate 201, and the diffusion layer includes a plurality of spherical particles 2 05 and is doped in a main material layer 2 0 3 with a plurality of balls. The material of the particles 2 0 5 is an organic polymer material or an inorganic material, such as polymethyl methacrylate (PMMA), titanium dioxide (Ti02),
第9頁 200526995 五、發明說明（6) 二氧化石夕（S i 〇 g)或玻璃珠等，此主材料層2 0 3之材質亦為 一有機高分子材料，例如胺基曱酸乙酯（u r e t h a n e )樹脂、 醋酸乙烯酯（vinyl acetate)樹脂、氯乙烯（vinyl chloride)樹脂、苯乙烯（styrene)樹脂或聚乙烯 (polyethylene)樹脂等等。另一方面，包含複數個球狀 顆粒2 0 5及主材料層2 0 3所形成之擴散層的形狀可為楔形狀 或不規則狀，其中，主材料層2 0 3係為一流體（f丨u丨d )。此 外，每一球狀顆粒2 0 5之尺寸大小在1至數十個微米 (micron met er)之間。要說明的是，每一球狀顆粒2〇5之 折射係數（ref ract i ve index)與主材料層2〇3之折射係數 並不相同，因此當入射光通過主材料層2〇3與複數個球 顆粒2 0 5之間的介面時，才會達到光線被擴散之效果。 材料層 及複數 上，之 之有機 主材料 粒20 5 光通過 不可超 得到適 ，球狀 述擴散板之製造方式，係將球狀顆粒2 〇 5混入至 2 0 3中it利用塗佈之方式，將此包含主材料層 :球：顆粒= 之擴散層塗佈在透明基板2〇ι之表面 ，執=一固化（curing)製程，以蒸發此擴散 洛劑。在此擴散層中，將複數個 、内 層203中之目的係為了得到 /狀顆粒2 0 5混入 ’藉由此高密度之複數個球狀顆：2。:,：個球严顆 擴散層時會被均勻地擴散，但球：入射 過主材料層203重量的3 0 0%，否 如^2 0 5之重量 :之牙透率，並且會影響樹脂之密著 一.，方法 顆粒205之重量亦不可低於主材料層晴量的= 200526995 五、發明說明（7) 因此，球狀顆粒 ，否則，會影響其入射光被擴散之效果 2 0 5之密度必須適當地被控制。 由於球狀顆粒2 0 5及主材料2 0 3所形成的擴散板可使入 射光達到穿透之效果，但其可達到之穿透率有限，例如8 5 %之光穿透率，因此，本發明係在透明基板2 0 1之下方表 面上形成一具有低反射率（low reflectivity)之抗反射層 (Anti- Reflection layer)，此抗反射層包含複數個具有 奈米級之粒子2 0 9及一熱固性樹脂（thermosetting resin) 2 0 7，此複數個奈米級之粒子2 0 9係隨意地混合在熱固性樹 脂2 0 7中，且兩者係混合在一乙醇溶劑中，而此抗反射層 之厚度範圍在1-3 0微米’其複數個奈米粒子之尺寸大小範 圍在0 · 0 0 1微米至〇 · 1微米。由於當入射光通過此包含有複 數個奈米粒子2 0 9及熱固性樹脂2 0 7所形成之抗反射層時， 入射光同時會產生穿透及反射之特性。由於本發明藉由形 成包含複數個奈米粒子2 〇 9及熱固性樹脂2 0 7之抗反射層， 且其抗反射層又具有低反射率之特性，因此，可降低入射 光的反射率，而提高入射光的穿透率，例如5%之光穿透 率。此外’此抗反射層具有複數個奈米粒子2 0 9，因此， 當入射光線通過此薄膜層時，可增加入射光線被擴散之效 果，進而提供一顯示器，例如一液晶顯示器，一均勻且亮 度高之面光源。 再者’此包含複數個奈米粒子2 〇 9及熱固性樹脂2 〇 7之Page 9 200526995 V. Description of the invention (6) Stone dioxide (Si 〇g) or glass beads, etc. The material of this main material layer 203 is also an organic polymer material, such as ethyl aminoacetate (Urethane) resin, vinyl acetate resin, vinyl chloride resin, styrene resin or polyethylene resin, and the like. On the other hand, the shape of the diffusion layer formed by a plurality of spherical particles 2 0 5 and the main material layer 2 0 3 may be wedge-shaped or irregular. The main material layer 2 0 3 is a fluid (f丨 u 丨 d). In addition, the size of each spherical particle 205 is between 1 and several tens of micrometers. It should be noted that the refractive index of each spherical particle 205 is not the same as the refractive index of the main material layer 203. Therefore, when the incident light passes through the main material layer 203 and the complex number The effect of light being diffused is achieved only when the interface between the spherical particles 2 0 5. In the material layer and plural, the organic main material particles 20 5 can not be obtained through light. The manufacturing method of the spherical diffusion plate is to mix spherical particles 205 into 203. It is a coating method. The diffusion layer containing the main material layer: ball: particles = is coated on the surface of the transparent substrate 200m, and a curing process is performed to evaporate the diffusion agent. In this diffusion layer, the purpose of mixing the plurality of inner layers 203 is to obtain / like particles 2 0 5 ′, so that a plurality of spherical particles having a high density: 2. :,: When the ball is tightly diffused, the ball will be uniformly diffused, but the ball: 3 0 0% of the weight of the main material layer 203, whether it is ^ 2 0 5 weight: the permeability of the tooth, and it will affect the resin The close one. The weight of the method particles 205 must not be less than the amount of clear of the main material layer = 200526995 V. Description of the invention (7) Therefore, spherical particles, otherwise, will affect the effect of incident light being diffused 2 0 5 The density must be controlled appropriately. Because the diffuser formed by spherical particles 205 and the main material 203 can penetrate the incident light, but its achievable transmittance is limited, for example, 85% light transmittance. Therefore, The invention forms an anti-reflection layer with low reflectivity on the lower surface of the transparent substrate 201. The anti-reflection layer includes a plurality of particles having a nanometer level. And a thermosetting resin 2 07, the plurality of nano-sized particles 2 0 9 are randomly mixed in the thermosetting resin 2 7 and the two are mixed in an ethanol solvent, and the anti-reflection The thickness of the layer is in the range of 1-30 micrometers, and the size of the plurality of nano particles is in the range of 0.1 micrometer to 0.1 micrometer. Because when the incident light passes through the anti-reflection layer formed by a plurality of nano-particles 209 and thermosetting resin 2 07, the incident light has the characteristics of transmission and reflection at the same time. Since the present invention forms an anti-reflection layer including a plurality of nano particles 209 and a thermosetting resin 207, and the anti-reflection layer has a characteristic of low reflectivity, the reflectance of incident light can be reduced, and Increase the transmittance of incident light, such as 5%. In addition, 'the anti-reflection layer has a plurality of nano particles 209, so when the incident light passes through the thin film layer, the effect of the incident light being diffused can be increased, thereby providing a display, such as a liquid crystal display, with uniformity and brightness. High surface light source. Furthermore, this includes a plurality of nano particles 209 and thermosetting resin 207.
第11頁 200526995 五、發明說明（8) 抗反射層係利用一製程，例如一濕式製程，將此抗反射層 形成於透明基板2 0 1之下方表面上，其中，濕式製程係利 用一塗佈之方式，或一超薄塗佈之方式，例如微凹版印刷 塗佈（micro-gravure coating)之方法、基材張力撥壓式 (web tension coating )之方法，將抗反射層塗佈在透明 基板2 0 1之下方表面上，之後，執行一固化製程，將抗反 射層中之乙醇溶劑移除。此外，在執行乾式製程中，係將 熱固性樹脂2 0 7與複數個奈米粒子2 0 9以一乙醇溶劑混合後 ，利用一蒸鍍之方式，例如真空蒸鍍方法，將此低反射率 之抗反射層蒸鍍於透明基板2 0 1之下方表面上，由於蒸鍍 方式可精確地控制此抗反射層之厚度，因此，在所有之可 見光範圍内（4 0 0 - 7 0 0 nm )，其反射率可控制在0 . 5%以下。 最後，完成本發明之擴散板之結構。 本發明所述之低反射率之抗反射層，在經過實際之測 試後，可使入射光之穿透率提升約5% ，因此，利用此具 有低反射率之抗反射層形成一具有高穿透率之擴散板結構 ，並以此結構加入一背光模組之應用中，即可補償因入射 光通過背光模組時所損失之光線強度。如第三圖所示，其 中’係提供一背光模組，此背光模組包含一光源2 1 9，而 光源2 1 9可提供一平行之入射光2 1 7。此外，此背光模組亦 提供一導光板2 1 1於具有低反射率之抗反射層之下方表面 上，此導光板2 1 1之材質可為丙烯酸樹脂，同時，此導光 板2 1 1包含複數個具有等間距之擴散點2 1 3於導光板2 1 1底Page 11 200526995 V. Description of the invention (8) The anti-reflection layer uses a process, such as a wet process. This anti-reflection layer is formed on the lower surface of the transparent substrate 201, wherein the wet process uses a Coating method, or an ultra-thin coating method, such as a micro-gravure coating method, a web tension coating method, and the antireflection layer is coated on the On the lower surface of the transparent substrate 201, a curing process is performed to remove the ethanol solvent in the anti-reflection layer. In addition, in performing the dry process, the thermosetting resin 207 and a plurality of nano-particles 209 are mixed with an ethanol solvent, and then an evaporation method, such as a vacuum evaporation method, is used to reduce this low reflectivity. The anti-reflection layer is vapor-deposited on the surface below the transparent substrate 201. Since the thickness of the anti-reflection layer can be accurately controlled by the vapor deposition method, in all visible light ranges (4 0-7 0 0 nm), Its reflectivity can be controlled below 0.5%. Finally, the structure of the diffusion plate of the present invention is completed. The anti-reflection layer with low reflectance according to the present invention can increase the transmittance of incident light by about 5% after actual testing. Therefore, using this anti-reflection layer with low reflectance to form a high-transmission layer The diffuser structure of the transmittance, which is added to the application of a backlight module with this structure, can compensate the light intensity lost due to the incident light passing through the backlight module. As shown in the third figure, the backlight module includes a light source 2 1 9 and the light source 2 1 9 can provide a parallel incident light 2 1 7. In addition, the backlight module also provides a light guide plate 2 1 1 on the lower surface of the anti-reflection layer having a low reflectance. The material of the light guide plate 2 1 1 may be an acrylic resin. At the same time, the light guide plate 2 1 1 includes A plurality of diffusion points 2 1 3 having equal intervals on the bottom of the light guide plate 2 1 1
第12頁 200526995 五、發明說明（9) 面之表面上，其中，擴散點21 3之材質可為二氧化欽 (titanium dioxide, Ti02)。另外，此背光才- Q子爲組更 ' Vil-u J>L /iL· —. 反射板2 1 5於導光板2 1 1之下方表面上，以擗4 曰w入射光2 1 7 的使用效率。利用本發明之擴散板結構加入此 時，藉由此擴散板結構具有高穿透率之特性，果、、且中 μ， 1工因此，可接 供一顯示器，例如液晶顯示器，一高性能化的背光技術。 由以上對本發明有關之較佳具體實施例之闡述， 解本發明優點之一為提供一種擴散板結構， 板結構之下方表面上形成一具有低反射率之抗擴： ㈡”士 一熱固性樹脂且包含複數個奈米級之粒子， 執：2: t級之粒子係以乙醇為一溶劑且任意地混合在 :曰中，由於此抗反射層具有低 =射光通過此薄膜層時，可提高其穿透率，】者，： 反射層時光會有被擴散之；ί粒子，0此，入射光通過抗 且亮度高之面光源 果，目此可提供顯示器-均勻 定本p日/斤> 述&僅為本發明之較佳具體實施例，並非用以限 術領域之專門人士岸 以上之描述對於熟知本技 明所搞♦夕拉α 了月瞭及貫施，因此其他未脫離本發 下述之“Γ利成的等效改變或修· ’均應包含在Page 12 200526995 V. Description of the invention (9) On the surface, the material of the diffusion point 21 3 may be titanium dioxide (Ti02). In addition, the backlight Q-group is more 'Vil-u J > L / iL · —. The reflection plate 2 1 5 is on the lower surface of the light guide plate 2 1 1 with 擗 4 or w incident light 2 1 7 Use efficiency. The diffusion plate structure of the present invention is added at this time, so that the diffusion plate structure has the characteristics of high transmittance. Therefore, it can be used for a display such as a liquid crystal display and a high performance. Backlight technology. From the above description of the preferred embodiments of the present invention, one of the advantages of the present invention is to provide a diffuser plate structure. A lower reflection-resistant anti-diffusion is formed on the lower surface of the plate structure: 士 ”a thermosetting resin and Contains a number of nano-level particles. Implementation: 2: t-level particles use ethanol as a solvent and arbitrarily mixed in: said, because this anti-reflection layer has low = light transmitted through this film layer, it can be improved. Transmittance,] ,: Reflective layer will be diffused by time; ί particles, 0, the incident light passes through the surface light source with high resistance and brightness, which can provide a display-uniform book p day / kg > & It is only a preferred embodiment of the present invention, and is not intended to limit the expertise of the person in the field. The above description is familiar with the techniques of this technology. Xi La α has been used and implemented for many months, so others have not departed from the present invention. The following equivalent changes or modifications of "Γ 利 成" shall be included in
200526995 圖式簡單說明 五、【圖式簡單說明】 第一圖係習知擴散板之結構截面示意圖； 第二圖係根據本發明之可提高穿透率之擴散板結構之 一較佳具體實施例之結構截面示意；及 第三圖係根據本發明之可提高穿透率之擴散板結構與 一背光模組之結構截面示意圖。 主要部分之代表符號 101 透明基板 103 黏接劑 105 散射子 107 丙烯酸樹脂薄膜 201 透明基板 203 主材料層 205 球狀顆粒 207 熱固性樹脂 209 奈米級粒子 211 導光板 213 擴散點 215 反射板 217 入射光200526995 Brief description of the drawings V. [Simplified description of the drawings] The first diagram is a schematic cross-sectional view of the structure of a conventional diffusion plate; the second diagram is a preferred embodiment of a diffusion plate structure that can improve the transmittance according to the present invention. A schematic cross-sectional view of the structure; and a third cross-sectional view of the structure of a diffuser plate and a backlight module capable of improving transmittance according to the present invention. Representative symbols of the main part 101 Transparent substrate 103 Adhesive 105 Scatterer 107 Acrylic resin film 201 Transparent substrate 203 Main material layer 205 Spherical particles 207 Thermosetting resin 209 Nano-sized particles 211 Light guide plate 213 Diffusion point 215 Reflective plate 217 Incident light
第14頁 200526995 圖式簡單說明 2 19 光源 第15頁Page 14 200526995 Simple illustration of the diagram 2 19 Light source Page 15