200905255 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學系統或元件，且特別是有關 於一種改變光學特性之光學模組。 【先前技術】 近年來光電相關技術不斷推陳出新，加上數位化時代 的到來，進而推動了液晶顯示器市場的蓬勃發展。液晶顯 示器（Liquid Crystal Displayer ; LCD)具有高畫質、體積小、 重量輕、低電壓驅動、低消耗功率及應用範圍廣等優點， 因此被廣泛地應用於可攜式電視、行動電話、筆記型電腦 以及桌上型顯示器等消費性電子或電腦產品，並逐漸取代 陰極射線管（Cathode Ray Tube ; CRT)成為顯示器的主流。 II於液晶本身並不會發光，因此往往需要使用背光模 組來供應光源’藉以使液晶面板顯示肉眼能察覺之影像。 是故，背光模組所能提供的輝度與均勻度將與液晶面板所 顯示之影像品質息息相關。 【發明内容】 因此本發明一方面就是在提供一種光學調制裝置，用 以提，背光模組的亮態輝摩與均勻度./> 根據本發明一實施例’一種光源調制裝置包含基板、 擴散膜、感壓膠與擴散顆粒。其中，基板可為導光板或擴 散板。感壓膠係將擴散膜黏貼於基板上。擴散顆粒則分佈 於感壓膠中。 200905255 根據本發明另一實施例，—種光源調制裝置包含基 板、擴散膜、感壓膠與第一粒子。其中，基板可為導光^ 或擴散板。感壓膠係將擴散膜黏貼於基板上。第一粒子則 分佈於擴散膜背對基板的一面。 綜以上所述，本發明實施例之光源調制裝置係藉由擴 散顆粒於基板與擴散膜間所形成的微結構’或者藉由第」 粒子於擴散膜表面所形成的微結構，來提升射出光線的亮 態輝度與均勻度。 【實施方式】 以下將以圖示及詳細說明清楚說明本發明之精神，如 熟悉此技術之人員在瞭解本發明之實施例後，當可由本發 明所教示之技術，加以改變及修飾，其並不脫離本發明之 精神與範圍。 參照第1圖，其繪示依照本發明一實施例之光源調制 裝置的一種縱剖面圖。如圖所示，一種光源調制裝置包含 基板110、擴散膜120、感壓膠130與擴散顆粒140。其中， 基板110可為導光板或擴散板。感壓膠130係將擴散膜120 黏貼於基板11〇上。擴散顆粒14〇則分佈於感壓膠13〇中。 在本實施例中，擴散顆粒14〇之折射率與感壓膠13〇 之折射率間的絕對值差值可介於〇〇1〜〇9。具體而言’感 壓膠之主劑可包含壓克力樹脂（Acrylics resin，折射率 約為1.49)，而擴散顆粒14〇的材質可包含二氧化矽（smca， 折射率約為1.45〜2)。應瞭解到，以上所述之感壓膠與擴 散顆粒的材質均僅為例示，並非用以限制本發明，上述之 200905255 感壓膠的主劑亦可包含聚氨酯樹脂（p〇ly Urethane; pu， 折射率約為i.45〜丨.53)或氣丁二烯橡膠（chi〇r〇prene Rubber ; CR，折射率約為i .45〜1 53)，而擴散顆粒的材質 則可為鋁-二氧化矽（A1_Si〇2，折射率約為165)、二氧化鍺 (Ge〇2 ’折射率約為ι.65)或二氧化鈦（Ti〇2，折射率約為 2.3)，習知此項技藝者當依實際需要彈性選擇之。 此外’感塵膠130與擴散顆粒14〇的組成可視為一種 擴散膠，且使用者可視需要於此擴散膠中另外添加溶劑、 硬化劑及添加劑。舉例來說，本實施例之擴散膠即添加了 甲乙酮（methyl-ethyl ketone ·， MEK)作為溶劑、異氰酸酯 (Isocyanate)與環氧樹脂（Epoxy)作為硬化劑以及矽烷（siiane) 作為添加劑。在此擴散膠中，壓克力樹脂、二氧化矽、甲 乙酮、異氰酸酯、環氧樹脂與矽烷的含量比（phr)可為1〇〇 : n 4〇 : 〇·211 : 〇,〇76 : 〇·〇29 ’ 而其的厚度可為 1〇 _〜 4〇陣或15叫〜25叫。同樣地，以上所述之擴散膠的配 方僅為例示，並非用以限制本發明，以下表—將列出其它 可能的配方，習知此項技藝者應視實際需要彈性選擇^。 名稱 可能材料 [― — ----- 可能含量比（phr) 壓克力樹脂、聚氨 -----__ 主劑 酯樹脂或氣丁二烯 100 橡膠 200905255 溶劑 曱乙酮、異丙醇、 醋酸乙醋、醋酸丁 酯、甲基異丁酮、 曱苯、二曱笨等酮 類、酯類、芳香族 或上述溶劑的組合 10 〜200 硬化劑 異氰酸系硬化劑、 芳香族類異氰酸鹽 類或脂肪族類異氰 酸鹽類 0.1 〜0.5 硬化劑 氧樹脂系硬化劑 0.03 〜0.3 擴散顆粒 —-—------ 二氧化妙、紹-二氧 化矽、二氧化鍺、 —乳化欽或其它有 機/無機氧化物 0.3〜30 添加劑 任何型式的耦合劑 0_01 〜0.3 表一擴散膠的配方 另外，擴散膜120可於其背對基板11〇的一面具有粗 糖霧面125。具體而言，第1圖之光源調制裝置更可具有複 數個第-粒子124,其係分佈於擴散膜12〇背對基板ιι〇 的一面。更具體地說，此擴散膜12〇可由基材121與擴散 層122所組成。其中，擴散層122係位於基材i2i背對基 200905255 板110的一面，且此擴散層122具有主劑123與混於其中 之苐'一粒子124。 在本實施例之擴散層122中，第一粒子124之折射率 與主劑123之折射率間的絕對值差值可介於〇 〇1〜〇 2。具 體而。擴散層122之主劑123的材質可包含多元醇 (Polyol，折射率約為，而第一粒子124的材質 則可包含聚甲基丙烯酸甲酯（Polymethyl Methacrylate PMMA’折射率約為149)。應瞭解到’以上所述之擴散層 的配方僅為例示，並非用以限制本發明，上述之主劑的材 質亦可為聚醚型多元醇(折射率約為1.49〜1.51)、丙稀酸多 元醇(折射率約為丨.49〜^51)、壓克力樹脂（折射率约為M9) 或聚氨i旨樹脂(折射率約為in 53)，而第—粒子的材質 則可為丙烯酸樹脂（折射率约為146〜159)、聚氨醋樹脂（折 射率約為1,45〜h53)、聚氯乙雄(折射率約為1,46〜1.59) 或聚苯乙烯(折射率約為h46〜159)，f知此項技藝者當依 實際需要彈性選擇之。 同樣地，使用者亦可視需要於擴散層122中另外添加 溶劑及硬化劑。舉例來說’本實施例之擴散層122即添加 了甲乙_為_以及異㈣自旨作為硬化#卜此外，在擴 政層122 + ’多元醇、聚甲基丙烯酸曱酯、甲乙酮與異氰 酸醋的含量比（phr)可為議：87 7: 213: 6 4，而其厚度可 為30 _以下或介於8 _〜25 _。應瞭解到，以上所述 ^擴散層的配方僅為例示，並非用以限制本發明以下表 其它可能的配方，習知此項技藝者應視實際需要 彈性選擇之。 200905255 名稱 可能材料 可能含量比（phr) 主劑 聚醚型多元醇、 丙烯酸多元醇、 壓克力樹脂或 聚氨酯樹脂 100 溶劑 甲乙酮、異丙醇、 醋酸乙酯、醋酸丁 酯、曱基異丁酮、 曱苯、二曱苯等酮 類、酯類、芳香族 或上述溶劑的組合 100〜500 硬化劑 異氰酸系硬化劑、 芳香族類異氰酸鹽 類或脂肪族類異氰 酸鹽類 3〜15 粒子 丙晞酸樹脂、 聚氨酯樹脂、 聚氯乙烯或 聚苯乙烯 15 〜150 表二擴散層的配方 200905255 第1〜3圖係繪示依照本發明各個實施例之光學調制裝 置的縱剖面圖。雖然第丨圖之擴散膜12〇僅於其背對基板 no的面上具有粗糙霧面125，但此並不限制本發明，此擴 散膜120亦可於其面對基板11〇的面上具有粗 129(如第2〜3圖所繪示）。具體而言，第2〜3圖之光學調 制裝置可具有複數個第二粒子128，其係分佈於擴散膜12〇 面對基板110的一面。 更具體地說，第2〜3圖之擴散膜120可包含基材121 與擴散層126。擴散層126係位於基材121面對^板ιι〇 的一面，且此擴散層126具有主劑127與混於其中之第二 粒子128。其中，第二粒子128的材質可與上述之第一粒子 124的材質相同’或者選用表二中其他可能的材料，且擴散 層126亦可與擴散層122具有相同的配方，或者選用表二 中其他可能的财。此外，上述之擴散層126之厚度範圍 可為 10 μιη〜40 pm 或 15 μιη〜25 μπι，。 综以上所述，擴散膜12〇可單獨具有向外的粗糙霧面 125(如第i圖所績示）、單獨具有向内的粗链霧面129(如第 2圖所繪示）或兩者兼具（如第3圖所繪示）。 此外’擴韻120之基材121的材質可為聚對笨二甲 酸乙二醋（P〇lyethylene Terephthalate ; pET )或聚碳酸醋 (Polycarbonate ; PC )’而其厚度可介於35 _〜25〇 _或 100 μιη〜190 μιη ° 以下表三與表四列出數個實驗樣品在各個視角的輝产 資料。其中，實驗樣品-具有第1圖所繪示的結構；實： 200905255 樣时一具有第2圖所緣示的結構，·實驗樣品三則具 ^繪示的結構，且其擴賴兩面之難層具有相同的光 Γ特性(例如：霧度、穿透率、折射率差與粒子分佈待徵）. :::品:為第】_示的結構，並於其出光’ 擴放膜，實驗樣品五為第2圖所繪示的結構 2 側加裝兩擴散膜，·實驗樣品六為第3圖所㈣的結= 於其出光侧加裝兩擴散膜。應瞭解到， ， 射率差」在擴散膜中是指第一粒子或第：;與表四中之「折 主劑之折射率間的差值，而在擴散膠中則〜I:折射率與 折射率與感壓膠之折射率間的差值。此外疋耘擴散粒子之 六之粒子與擴散顆粒的形狀均為圓形。夕，實驗樣品一〜200905255 IX. INSTRUCTIONS: FIELD OF THE INVENTION The present invention relates to an optical system or component, and more particularly to an optical module that changes optical properties. [Prior Art] In recent years, the optoelectronic related technology has been continuously updated, and the arrival of the digital era has promoted the vigorous development of the liquid crystal display market. Liquid crystal display (LCD) is widely used in portable TVs, mobile phones, and notebooks because of its high image quality, small size, light weight, low voltage drive, low power consumption, and wide application range. Consumer electronics or computer products such as computers and desktop displays have gradually replaced cathode ray tubes (CRTs) as the mainstream of displays. II does not emit light in the liquid crystal itself, so it is often necessary to use a backlight module to supply the light source' so that the liquid crystal panel displays an image that can be perceived by the naked eye. Therefore, the brightness and uniformity that the backlight module can provide will be closely related to the image quality displayed on the LCD panel. SUMMARY OF THE INVENTION Accordingly, an aspect of the present invention is to provide an optical modulation device for improving the brightness and uniformity of a backlight module. In accordance with an embodiment of the present invention, a light source modulation device includes a substrate, Diffusion film, pressure sensitive adhesive and diffusion particles. The substrate may be a light guide plate or a diffusion plate. The pressure sensitive adhesive adheres the diffusion film to the substrate. The diffusion particles are distributed in the pressure sensitive adhesive. 200905255 According to another embodiment of the present invention, a light source modulating device includes a substrate, a diffusion film, a pressure sensitive adhesive, and a first particle. The substrate may be a light guide or a diffusion plate. The pressure sensitive adhesive adheres the diffusion film to the substrate. The first particles are distributed on one side of the diffusion film facing away from the substrate. In summary, the light source modulating device of the embodiment of the present invention enhances the emitted light by the microstructure formed by the diffusion particles between the substrate and the diffusion film or by the microstructure formed by the particles on the surface of the diffusion film. Brightness and uniformity. BRIEF DESCRIPTION OF THE DRAWINGS The spirit of the present invention will be clearly described in the following description and the detailed description of the embodiments of the present invention, which can be modified and modified by the teachings of the present invention, The spirit and scope of the invention are not departed. Referring to Fig. 1, there is shown a longitudinal sectional view of a light source modulating device in accordance with an embodiment of the present invention. As shown, a light source modulating device includes a substrate 110, a diffusion film 120, a pressure sensitive adhesive 130, and diffusion particles 140. The substrate 110 can be a light guide plate or a diffusion plate. The pressure sensitive adhesive 130 adheres the diffusion film 120 to the substrate 11A. The diffusion particles 14 are distributed in the pressure sensitive adhesive 13〇. In the present embodiment, the absolute value difference between the refractive index of the diffusion particle 14〇 and the refractive index of the pressure sensitive adhesive 13〇 may be between 〇〇1 and 〇9. Specifically, the main component of the pressure sensitive adhesive may comprise an acrylic resin (acrylic resin) having a refractive index of about 1.49, and the material of the diffusing particle 14 may comprise cerium oxide (smca, having a refractive index of about 1.45 to 2). . It should be understood that the materials of the pressure sensitive adhesive and the diffusing particles described above are merely illustrative and are not intended to limit the present invention. The main agent of the above-mentioned 200905255 pressure sensitive adhesive may also contain a polyurethane resin (p〇ly Urethane; pu, The refractive index is about i.45~丨.53) or the gas butadiene rubber (CR, refractive index is about i.45~1 53), and the material of the diffusion particles can be aluminum- Cerium dioxide (A1_Si〇2, refractive index is about 165), cerium oxide (Ge〇2' refractive index is about ι.65) or titanium dioxide (Ti〇2, refractive index is about 2.3), this technique is known. Those who choose according to actual needs are flexible. Further, the composition of the dust-sensitive adhesive 130 and the diffusion particles 14A can be regarded as a diffusion gel, and the user can additionally add a solvent, a hardener and an additive to the diffusion gel as needed. For example, the diffusion gel of this embodiment is added with methyl ethyl ketone (MEK) as a solvent, isocyanate and epoxy (Epoxy) as a hardener, and siiane as an additive. In the diffusion gel, the content ratio (phr) of acrylic resin, cerium oxide, methyl ethyl ketone, isocyanate, epoxy resin and decane may be 1 〇〇: n 4 〇: 〇·211 : 〇, 〇 76 : 〇 ·〇29' and its thickness can be 1〇_~4〇 array or 15called~25叫. Similarly, the formulations of the diffusion gels described above are merely illustrative and are not intended to limit the invention. The following table - other possible formulations will be listed, and those skilled in the art will be able to flexibly select according to actual needs. Name Possible Material [― — ----- Possible Content Ratio (phr) Acrylic Resin, Polyamide-----__ Main Agent Ester Resin or Gas Butadiene 100 Rubber 200905255 Solvent Ethyl Ketone, Isopropanol , a combination of ketones such as ethyl acetate, butyl acetate, methyl isobutyl ketone, benzene, hydrazine, ketones, esters, aromatics or the above solvents 10 to 200 hardeners isocyanic hardeners, aromatics Isocyanate or aliphatic isocyanate 0.1~0.5 Hardener Oxygen resin hardener 0.03 ~0.3 Diffusion particles--------- Dioxide, Sodium-Oxide, Oxidation锗, emulsified chin or other organic/inorganic oxides 0.3~30 Additives Any type of coupling agent 0_01 ～0.3 Table 1 Formulation of Diffusion Glue In addition, the diffusion film 120 may have a rough sugar surface 125 on its side facing away from the substrate 11〇. . Specifically, the light source modulating device of Fig. 1 may further have a plurality of first particles 124 distributed on one side of the diffusion film 12 facing away from the substrate ιι. More specifically, the diffusion film 12A may be composed of a substrate 121 and a diffusion layer 122. The diffusion layer 122 is located on one side of the substrate i2i facing away from the substrate 200905255, and the diffusion layer 122 has a main agent 123 and a particle 124 mixed therein. In the diffusion layer 122 of the present embodiment, the absolute value difference between the refractive index of the first particles 124 and the refractive index of the main agent 123 may be between 〇 〇 1 and 〇 2 . Specifically. The material of the main component 123 of the diffusion layer 122 may include a polyol (Polyol, a refractive index is about, and the material of the first particle 124 may include polymethyl methacrylate (Polymethyl Methacrylate PMMA' having a refractive index of about 149). It is understood that the formula of the above-mentioned diffusion layer is merely an example, and is not intended to limit the present invention. The material of the above-mentioned main agent may also be a polyether polyol (refractive index of about 1.49 to 1.51), and a plurality of acrylic acids. Alcohol (refractive index of about 49.49~^51), acrylic resin (refractive index of about M9) or polyurethane (refractive index of about 53), and the first particle is acrylic Resin (refractive index of about 146~159), polyurethane resin (refractive index of about 1,45~h53), polychloroethylene (refractive index of about 1,46~1.59) or polystyrene (refractive index of about H46~159), know that the person skilled in the art can flexibly select according to the actual needs. Similarly, the user can additionally add a solvent and a hardener to the diffusion layer 122 as needed. For example, the diffusion layer 122 of the present embodiment. That is, adding A and B _ as well as _ (four) from the purpose as hardening #卜 In addition, in the expansion layer 122 + ' The content ratio of the alcohol, polymethyl methacrylate, methyl ethyl ketone to isocyanic acid vine (phr) can be discussed as: 87 7: 213: 6 4, and its thickness can be 30 _ or less or between 8 _~25 _ It should be understood that the formula of the above-mentioned diffusion layer is merely an example, and is not intended to limit other possible formulations of the following table of the present invention, and those skilled in the art should flexibly select according to actual needs. 200905255 Name Possible material content Ratio (phr) main agent polyether polyol, acrylic polyol, acrylic resin or polyurethane resin 100 solvent methyl ethyl ketone, isopropanol, ethyl acetate, butyl acetate, decyl isobutyl ketone, benzene, bismuth a combination of ketones such as benzene, esters, aromatics or the above solvents 100 to 500 hardener isocyanic curing agent, aromatic isocyanate or aliphatic isocyanate 3 to 15 particles Acid resin, polyurethane resin, polyvinyl chloride or polystyrene 15 to 150 Formula 2 diffusion layer formulation 200905255 FIGS. 1 to 3 are longitudinal cross-sectional views showing an optical modulation device according to various embodiments of the present invention. Diffusion film 12 Only the surface opposite to the substrate no has a rough matte surface 125, but this does not limit the present invention. The diffusing film 120 may also have a thick 129 on the surface facing the substrate 11〇 (as shown in FIGS. 2 to 3). Specifically, the optical modulation device of FIGS. 2 to 3 may have a plurality of second particles 128 distributed on one side of the diffusion film 12 facing the substrate 110. More specifically, the second to The diffusion film 120 of FIG. 3 may include a substrate 121 and a diffusion layer 126. The diffusion layer 126 is located on the side of the substrate 121 facing the plate ιι, and the diffusion layer 126 has a main agent 127 and a second particle 128 mixed therein. The material of the second particle 128 may be the same as the material of the first particle 124. Alternatively, other possible materials in Table 2 may be used, and the diffusion layer 126 may have the same formula as the diffusion layer 122, or may be selected from Table 2. Other possible fortune. Further, the diffusion layer 126 may have a thickness ranging from 10 μm to 40 pm or 15 μm to 25 μm. In summary, the diffusion film 12A may have an outwardly rough matte surface 125 (as shown in Fig. i), an inwardly thick chain matte surface 129 (as shown in Fig. 2) or two. Both have (as shown in Figure 3). In addition, the material of the substrate 121 of the expansion rhyme 120 may be P〇lyethylene Terephthalate (pET) or polycarbonate (Polycarbonate; PC) and its thickness may be between 35 _~25〇. _ or 100 μιη~190 μιη ° Table 3 below and Table 4 list the experimental data of several experimental samples in various perspectives. Among them, the experimental sample has the structure shown in Fig. 1; real: 200905255 When the sample has the structure shown in Fig. 2, the experimental sample has the structure shown by ^, and it is difficult to expand the two sides. The layers have the same pupil characteristics (for example: haze, transmittance, refractive index difference and particle distribution to be obtained). :::Product: is the structure shown in the first section, and the film is expanded and expanded. Sample 5 is a two-diffusion film attached to the structure 2 side shown in Fig. 2, and the experimental sample 6 is the junction of the fourth figure (4). Two diffusion films are attached to the light-emitting side. It should be understood that, in the diffusion film, the first particle or the first: or the difference between the refractive index of the main agent in Table 4 and the refractive index in the diffusion gel. The difference between the refractive index and the refractive index of the pressure sensitive adhesive. In addition, the shape of the particles of the 疋耘 diffusion particles and the shape of the diffusion particles are both circular.
12 20090525512 200905255
粒子分 佈特徵 單分佈 (Mono) 單分佈 (Mono) 單分佈 (Mono) 擴散膠 霧度 78 78 78 穿透率 >60 >60 >60 折射率差 0.04 0.04 0.04 擴散顆粒 分佈特徵 多分佈 (Poly) 多分佈 (Poly) 多分佈 (Poly) 視角-輝度 曲線 水平視角 第4A圖 第5A圖 第6A圖 垂直視角 第4B圖 第5B圖 第6B圖 表三實驗樣品—三在各個視角的輝度資料 貫驗樣品 四 五 六 加裝擴散膜數 2 2 2 縱剖面圖 第1圖 第2圖 第3圖 擴散膜 霧度 >70 >70 >70 13 200905255 穿透率 >65 >65 >65 折射率差 0〜0.02 0〜0.02 0〜0.02 粒子分 佈特徵 單分佈 (Mono) 單分佈 (Mono) 單分佈 (Mono) 擴散膠 霧度 78 78 78 穿透率 >60 >60 >60 折射率差 0.04 0.04 0.04 擴散顆粒 分佈特徵 多分佈 (P〇iy) 多分佈 (P〇iy) 多分佈 (P〇iy) 視角-輝度 曲線 水平視角 第7A圖 第8A圖 第9A圖 垂直視角 第7B圖 第8B圖 第9B圖 表四實驗樣品四〜六在各個視角的輝度資料 由表三與表四可知，不論是貫驗樣品一〜六，中心輝 度均至少達3726 nits，且隨視角增加輝度也不會快速下 降。此外，在出光側加裝兩擴散膜後，中心輝度更是至少 達5584 nits。因此，上述實施例之光源調製裝置確實可提 200905255 升射出光線的亮態輝度，且此輝度不會隨著視角增加而快 速下降。 雖然本發明已以實施例揭露如上，然其並非用以限定 本發明，任何熟習此技藝者，在不脫離本發明之精神和範 圍内，當可作各種之更動與潤飾。舉例來說，上述之擴散 膜可為任何型式的擴散膜，例如：不同霧度擴散膜（Normal Diffuser film)、集光擴散膜（enhance brightness diffuser film)、擴散聚光膜（Diffusion and brightness enhancement film)、聚光片（brightness enhancement film)、微結構 (microstructure)或微透鏡結構（microlens structure)擴散 膜、微結構或微透鏡結構聚光膜、微結構或微透鏡結構複 合膜、濕式塗佈型擴散膜或運用表面微結構或微透鏡結構 及UV製程的熱浮雕（Hot embossing)微結構或微透鏡結構 擴散膜。此外，上述實施例之光源調制裝置亦可於基板的 雙面黏貼擴散膜，並非僅限於單面。另外，感壓膠的材質 除了可為熱固型樹脂外，熱塑型樹脂、紫外線硬化型樹脂 或是放射線硬化型樹脂也都可以應用來作為感壓膠。因 此’本發明之保護範圍當視後附之申請專利範圍所界定者 為準。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖係繪示依照本發明一實施例之光源調制裝置的 15 200905255 —種縱剖面圖。 第2圖係繪示依照本發明另一實施例之光源調制| 的—種縱刮面圖。 、置 第3圖係繪不依照本發明再一實施例之光源調制裝置 的一種縱剖面圖。 ^ 第4A圖與第4B圖係分別繪示依照本發明一實例之光 源調制裝置的水平與垂直視角對輝度曲線圖。 第5A圖與第5B圖係分別繪示依照本發明另一實例之 光源調制裝置的水平與垂直視角對輝度曲線圖。 第6 A圖與第6B圖係分別繪示依照本發明再—實例之 光源調制裝置的水平與垂直視角對輝度曲線圖。 第7A圖與第7B圖係分別繪示依照本發明又一實例之 光源調制裝置的水平與垂直視角對輝度曲線圖。 第8 A圖與第8B圖係分別缘示依照本發明再一實例之 光源調制裝置的水平與垂直視角對輝度曲線圖。 第9A圖與第9B圖係分別繪示依照本發明又—實例之 &源調制裝置的水平與垂直視角對輝度曲線圖。 【主要元件符號說明】 120 擴散膜 122 擴散層 124 第一粒子 126 擴散層 128 第二粒子 130 感壓膠 110 :基板 121 :基材 123 :主劑 125 :粗糙霧面 127 :主劑 129 :粗糖霧面 14(n擴散顆粒Particle distribution characteristics Single distribution (Mono) Single distribution (Mono) Single distribution (Mono) Diffusion haze 78 78 78 Penetration rate >60 >60 >60 Refractive index difference 0.04 0.04 0.04 Diffusion particle distribution characteristics Multi-distribution ( Poly) Poly Multi-Distribution (Poly) Viewing Angle - Brightness Curve Horizontal Viewing 4A Figure 5A Figure 6A Vertical Viewing 4B Figure 5B Figure 6B Chart 3 Experimental Samples - Three luminance data at various angles Test sample 456 plus diffusion film number 2 2 2 longitudinal section view 1st picture 2nd picture 3th diffusion film haze>70 >70 >70 13 200905255 penetration rate>65 >65 > ;65 Refractive index difference 0~0.02 0~0.02 0~0.02 Particle distribution characteristics Single distribution (Mono) Single distribution (Mono) Single distribution (Mono) Diffusion haze 78 78 78 Transmittance >60 >60 > 60 Refractive index difference 0.04 0.04 0.04 Diffusion particle distribution characteristics Multi-distribution (P〇iy) Multi-distribution (P〇iy) Multi-distribution (P〇iy) Viewing angle - Luminance curve Horizontal viewing angle 7A Figure 8A Figure 9A Vertical view 7B Figure 8B Figure 9B Chart 4 Experimental Samples Four to Six at Various Perspectives Luminance data can be seen from Table III and Table IV, whether it is a consistent test sample to sixth, the center luminance average of at least 3726 nits, and with the increased viewing angle luminance does not decrease quickly. In addition, after the two diffusion films are installed on the light-emitting side, the central luminance is at least 5584 nits. Therefore, the light source modulating device of the above embodiment can surely raise the bright luminance of the light emitted by the 200905255 liter, and the luminance does not rapidly decrease as the viewing angle increases. While the invention has been described above by way of example, it is not intended to be construed as limiting the invention. For example, the diffusion film may be any type of diffusion film, for example, a different Diffuser film, an ambient brightness diffuser film, a diffusion and brightness enhancement film (Diffusion and brightness enhancement film). ), brightness enhancement film, microstructure or microlens structure diffusion film, microstructure or microlens structure concentrating film, microstructure or microlens structure composite film, wet coating Type diffusion film or heat embossing microstructure or microlens structure diffusion film using surface microstructure or microlens structure and UV process. Further, the light source modulating device of the above embodiment can also adhere the diffusion film to both sides of the substrate, and is not limited to one side. In addition, the material of the pressure sensitive adhesive can be used as a pressure sensitive adhesive in addition to a thermosetting resin, a thermoplastic resin, an ultraviolet curable resin, or a radiation curable resin. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; Light source modulation device 15 200905255 - a longitudinal section view. 2 is a longitudinal plan view showing a light source modulation according to another embodiment of the present invention. Fig. 3 is a longitudinal sectional view showing a light source modulating device which is not in accordance with still another embodiment of the present invention. ^ Fig. 4A and Fig. 4B are graphs showing the luminance curves of the horizontal and vertical viewing angles of the light source modulating device according to an example of the present invention, respectively. 5A and 5B are respectively a horizontal and vertical viewing angle versus luminance curve of the light source modulating device according to another example of the present invention. 6A and 6B are respectively a horizontal and vertical viewing angle versus luminance curve of the light source modulating device according to the present invention. 7A and 7B are respectively a horizontal and vertical viewing angle versus luminance curve of the light source modulating device according to still another example of the present invention. Fig. 8A and Fig. 8B are graphs showing the luminance curves of the horizontal and vertical viewing angles of the light source modulating device according to still another example of the present invention, respectively. 9A and 9B are respectively a horizontal and vertical viewing angle versus luminance curve of the & source modulation device according to the present invention. [Main component symbol description] 120 diffusion film 122 diffusion layer 124 first particle 126 diffusion layer 128 second particle 130 pressure sensitive adhesive 110: substrate 121: substrate 123: main agent 125: rough matte surface 127: main agent 129: raw sugar Matte 14 (n-diffused particles)