M353374 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種增亮膜，特別是關於一種能改變光強度分 佈的增亮膜。 【先前技術】M353374 VIII. New description: [New technical field] This creation is about a brightness enhancement film, especially for a brightness enhancement film that can change the light intensity distribution. [Prior Art]
一般來說’由於薄膜電晶體液晶顯示器(Thin Film Tmnsistoi· Liquid Crystal Display, TFT-LCD)無法主動發光，因此需設置背光 模組作為光源。液晶顯示器的背光模組之元件主要有發光源、增 焭膜、導光板、擴散膜及反射板。其中，增亮膜是相當重要的光 學元件。傳統上，增亮膜係在聚醋膜上塗#樹脂，再利用具有稜 鏡微結構之滾輪將樹脂轉印出多個微小的稜鏡結構。接著，利 紫外光將細小的稜鏡結構硬化。 透過光_折射触部全反射的顧，增亮膜之稜鏡結構可 集=來自擴散膜四面八方散射的光線，以提高h視角的亮度， 使知使用者在中心、視肖可接制最佳亮度。此外，設計者可 實際的需求調整增亮膜的結構設計，崎計螢幕 ， 將光線作最有效率的利用與回收。 优月度並 到隹亮f是透過改變光強度(亮度)分佈的方式來達 先(曰冗)^果。本創作主要提供另一種具有不同於先前 斤述結構之增細’用以增加光強度的針性。 1 【新型内容】 本創作之-麟在於提供—種增鎌，能增加光強度的集中 為了達成此範本創作之增亮膜包含透光基材及複數個出 5 M353374 光部。透光基材包含一出光平面，複數個 :連2二：?包含兩個斜面及兩個弧面，兩個弧 連接於另-弧面及連接於兩個斜面其中之―〃之弧 平面通過兩^面及t義面—ί二參考 ^之-斜面之間的一第二連接處，該第二參⑽= iSEss 間的距離為5G微米。該兩個第三連接處其中 該第二連接處之間的距離為〇.75*(50/(21/2)) = 26.5微米了 处，、 聚隼ΪΪ ’亮膜透過貼附於出光平面的複數個出光部 線出光部包含兩個斜面及兩個弧面。其中，設計去 j實際需求適#地改變弧面的曲率半徑(觸率巾植該& ^處之間的距離）’及改變斜面之長度(第 該、 ΐΓ:=) ’：可達到不同的光強度分佈，亦即達成= 果。繼而，設計者就可依據可視角的設計需求及本創 乍之增党膜的光強度分佈，將光線作最有效率的利用。 式得:與精神可以藉由以下的創作詳述及所附圖 【實施方式】 本創作之;t曰冗膜主要應用於顯示器的背光模組，用以集中冷 丢極螢光燈(Cold Cathode Fluorescent Lamp, CCFL)或發光二極體 (Light>Emitting Diode，LED)等光源所發射之光線。因此，本創作 之增凴膜能增加顯示器於小視角的光強度，讓使用者感受到較大 6 M353374 的売度。當然，本創作之增亮膜不限於應用於顯示器，還可應用 於其他發光裝置，例如車燈。 “ 參閱圖一及圖二。圖一繪示根據本創作一較佳具體實施例 之增免膜f之示意圖。圖二緣示圖一中之增亮膜3之侧視圖。如 圖-及圖二獅，本創作之增亮膜3包含透絲材％及複數個 出光部32。透絲材30包含入光面3〇〇及出光平面3〇2。光線 由入光面300射入增亮膜3，纟貼附於出光平面3〇2之一側的出 =32射出增亮膜3。再者’每—出光部％係筆直地平行於出 光平面302延伸且緊密排列。 中/ *光基材3〇之材料可為聚對苯二甲酸乙二醋In general, since a Thin Film Tmnsistoi Liquid Crystal Display (TFT-LCD) cannot actively emit light, it is necessary to provide a backlight module as a light source. The components of the backlight module of the liquid crystal display mainly include a light source, an annulus film, a light guide plate, a diffusion film, and a reflection plate. Among them, brightness enhancement film is a very important optical component. Conventionally, a brightness enhancing film is coated with a resin on a polyester film, and a resin having a prismatic microstructure is used to transfer the resin to a plurality of minute ruthenium structures. Then, the ultraviolet light hardens the fine crucible structure. Through the reflection of the total reflection of the refracting contact, the 稜鏡 structure of the brightness enhancement film can be collected = the light scattered from the diffusion film in all directions to improve the brightness of the h viewing angle, so that the user can be optimally connected at the center and the viewing angle. brightness. In addition, the designer can adjust the structural design of the brightness enhancement film with practical needs, and use the screen to make the most efficient use and recycling of light. The good moon and the brightest f are achieved by changing the distribution of light intensity (brightness). This creation mainly provides another kind of sizing which has a different thickness from the previous structure to increase the light intensity. 1 [New Content] This creation is based on the provision of a kind of enhancement, which can increase the concentration of light intensity. In order to achieve this model, the brightness enhancement film consists of a light-transmitting substrate and a plurality of 5 M353374 light parts. The light-transmitting substrate comprises a light-emitting plane, a plurality of: two 2:? comprising two inclined faces and two curved faces, two arcs connected to the other-arc surface and connected to the two inclined faces, wherein the arc plane passes through A second junction between the two faces and the t-planes - the second reference (10) = iSEss is 5G micrometers. The distance between the two third connections is 〇.75*(50/(21/2)) = 26.5 microns, and the 隼ΪΪ 'bright film is attached to the light exiting plane. The plurality of light exiting portions of the light exiting portion include two inclined surfaces and two curved surfaces. Among them, the design needs to change the radius of curvature of the curved surface (the distance between the touch and the ^) and change the length of the slope (the first, ΐΓ:=) ': can be different The light intensity distribution, that is, the achievement = fruit. In turn, the designer can use the light most efficiently according to the design requirements of the viewing angle and the light intensity distribution of the party film. The formula: and the spirit can be detailed by the following creations and the drawings [embodiment] This creation; t曰 膜 film is mainly used in the backlight module of the display to concentrate the cold fluorescent lamp (Cold Cathode) Fluorescent Lamp, CCFL) or light emitted by a light source such as a Light Emitting Diode (LED). Therefore, the enhanced film of the present invention can increase the light intensity of the display at a small viewing angle, allowing the user to feel the greaterness of the 6 M353374. Of course, the brightness enhancement film of the present invention is not limited to being applied to a display, but can be applied to other light-emitting devices such as a lamp. Referring to Figure 1 and Figure 2, Figure 1 is a schematic view showing the addition of a film f according to a preferred embodiment of the present invention. Figure 2 is a side view of the brightness enhancement film 3 of Figure 1. The two lions, the brightness enhancement film 3 of the present invention comprises a transparent wire material % and a plurality of light-emitting portions 32. The light-transmitting wire 30 comprises a light-incident surface 3〇〇 and a light-emitting surface 3〇2. The light is incident on the light-incident surface 300. The film 3, which is attached to one side of the light exiting plane 3〇2, emits the brightness enhancement film 3. In addition, the 'each light exiting portion% is straightly parallel to the light exiting plane 302 and closely arranged. The material of the substrate 3〇 may be polyethylene terephthalate
Terephthalate，pET) ’出光部32之材質可為樹脂 ^ Ψ SI(^^^^^X^yMethylMethAcrylate, 廿/rif5兄’出光部32是先透過滾輪轉印於透光基材30 由紫外線照射硬化成形。除此之外，出光部32也可與 透光基材30 —體成形，例如射出成形。 個^1及^所不’每一出光部32包含兩個斜面322及兩 娜其中之—弧面32G連接於另一弧面 32^及連接於兩個斜面322其中之—斜面您 兩個斜面322分別對稱於第一參考平面31，第一 ^ 的第一連接處321且垂直於出光平面搬。 2率Ϊ ίπΓ面％通過兩個弧面320其中之一弧面320 20與兩個斜面322其中之一斜面322 之間的-連接處323 ’則第二參考平面35垂直於斜面边。 於此較佳實施例中，每一斜面322與出 ，’也就是說若這兩個斜面322延伸且相接（圖二中的曰延 ί面則^\兩=322與出光平面迎可構成虛擬等腰直G 角面。再者’兩個斜面322分別連接於出光平面3〇2之兩個^三 7 M353374 連接處303。兩個第三連減303之間的距離泊(相#於虛擬等腰 直角三角形的底長)為50微米。弧面32〇的曲率中心32〇〇與 連接處323之間的距離dl(相當於弧面320的曲率半徑)為5〇微 米。兩個第三連接處303其中之一第三連接處3〇3與第二連接處 323之間的距離d2(相當於虛擬等腰三角形的部份邊長 0.75=^(50/(2^) = 26.5微米，換句話說距離d2為虛擬直' = 角形之邊長的3/4。 用一 • 為了說明本創作之增亮膜如何集中光線，因此以平行入射光 φ 入射增焭膜之出光部為例，如圖三所示。互相平行的第一入射光 L11及第二入射光L12分別入射於斜面322及弧面32〇 ,出光部 32暴露於空氣t。根據線性光學之思乃耳定律(Snell，s law)，由於 出光部32(—般為樹脂或壓克力)之折射率大於空氣之折射率，因 此第一折射光L21及第二折射光L22之折射角(erl、Θγ2)分別大於 第一入射光L11及第一入射光L12之入射角(0U、0ΰ)。明顯地， 如圖三所繪示之光線行進路徑可知，從出光部32射出之光線(第 一折射光L21及第二折射光L22)較入射於出光部32之光線(第一 入射光L11及第二入射光L12)更具集中性。因此，出光部32具 有集中光線的效果。 ° ~ 為了瞭解本創作之增亮膜對出光強度的影響，因此以光學模 擬軟體TracePro®計算朗伯(lambertian)光線入射本創作之增亮膜後 之光強度，如圖四所示。其中，朗伯光線是無方向性的輻射光 線’亦即光源向周圍均勻地發射光線。圖四緣示了朗伯光線的光 強度分佈以及朗伯光線入射圖二之增亮膜後於不同視角的光強度 分佈。並且’以朗伯光於零度視角之光強度為強度參考值，設$ 其相對光強度為1。此外’第一參考平面31(圖二所示)之延伸平 面代表視角為零’出光平面302(圖二所示)之延伸平面代表視角為 90度或-90度。 如圖四所示，朗伯光線入射本創作之增亮膜後之光強度約於 8 M353374Terephthalate, pET) The material of the light-emitting portion 32 can be resin ^ Ψ SI (^^^^^X^yMethylMethAcrylate, 廿/rif5 brother' light-emitting portion 32 is first transferred to the light-transmitting substrate through the roller 30 and hardened by ultraviolet irradiation. In addition, the light-emitting portion 32 may be integrally formed with the light-transmitting substrate 30, for example, injection molding. Each of the light-emitting portions 32 includes two inclined surfaces 322 and two of them - The curved surface 32G is connected to the other curved surface 32^ and is connected to the two inclined surfaces 322. The inclined surface of the two inclined surfaces 322 is respectively symmetric with respect to the first reference plane 31, the first joint 321 of the first ^ and perpendicular to the light exiting plane The second reference plane 35 is perpendicular to the beveled edge by the - joint 323 ' between one of the two curved faces 320 and one of the two inclined faces 322. In the preferred embodiment, each of the slopes 322 is out, that is, if the two slopes 322 extend and are connected (the extension of the two sides in FIG. 2, ^\two = 322 and the light plane can be formed Virtual isosceles straight G angle face. In addition, 'two slopes 322 are respectively connected to the light plane 3〇2 two ^ three 7 M3 53374 Connection 303. The distance between the two third consecutive subtractions 303 (phase # is the base length of the virtual isosceles right triangle) is 50 microns. Between the curvature center 32〇〇 of the curved surface 32〇 and the joint 323 The distance d1 (corresponding to the radius of curvature of the curved surface 320) is 5 〇 micrometers. The distance d2 between the third connection point 303 and the second connection 323 of the two third connections 303 (equivalent to virtual The length of the side of the isosceles triangle is 0.75=^(50/(2^) = 26.5 microns, in other words the distance d2 is virtual straight ' = 3/4 of the length of the corner. Use one to illustrate the creation of this creation The bright film converges the light, so the light exiting portion of the incident film φ is incident as an example, as shown in Fig. 3. The first incident light L11 and the second incident light L12 parallel to each other are incident on the inclined surface 322 and the curved surface, respectively. 32〇, the light exiting portion 32 is exposed to the air t. According to the linear optical Snn's law (Snell, s law), since the refractive index of the light exit portion 32 (usually resin or acryl) is greater than the refractive index of air, The refraction angles (erl, Θ γ2) of the first refracted light L21 and the second refracted light L22 are respectively greater than the first incident light L11 and the first input The incident angle of the light L12 (0U, 0ΰ). Obviously, as shown in the ray traveling path as shown in FIG. 3, the light emitted from the light exit portion 32 (the first refracted light L21 and the second refracted light L22) is incident on the light output. The light of the portion 32 (the first incident light L11 and the second incident light L12) is more concentrated. Therefore, the light exit portion 32 has the effect of concentrating light. ° ~ In order to understand the effect of the brightness enhancing film of the present invention on the light intensity, The optical intensity of the lambertian light incident on the brightness-enhancing film of the creation is calculated by the optical simulation software TracePro®, as shown in Fig. 4. Among them, the Lambert light is a non-directional radiation light, that is, the light source uniformly emits light to the surroundings. Figure 4 shows the light intensity distribution of the Lambertian rays and the light intensity distribution at different viewing angles after the Lambertian rays are incident on the brightness enhancement film of Figure 2. And the light intensity of the Lambertian light at the zero-degree viewing angle is the intensity reference value, and the relative light intensity is set to 1. Further, the extended plane of the first reference plane 31 (shown in Fig. 2) represents a viewing angle of zero. The extended plane of the light exiting plane 302 (shown in Fig. 2) represents a viewing angle of 90 degrees or -90 degrees. As shown in Figure 4, the light intensity of the Lambert light incident on the brightness-enhancing film of the creation is about 8 M353374.
SmiTo 0 之增亮膜具有光集中效果。 ·仰倍明顯地，本創作 =第處:^的麟），及改變斜面之^三連接處與 亦即達 】求及本_之增亮_光強度分佈，; 數個:Π=ί，貼附於出光平面的複 Γ- ΐΐί實際f求適#地改變弧_曲率半徑(該曲率中二 藉由以上較佳具體實施例之詳述 ss:rrr上述所揭露的較佳 此了本排於本創作所欲中請之專利範圍的範傳内。因 ί的=nf之專利範_範_該根據上述的說明作最宽 廣的解釋’㈣使其涵蓋财可㈣改變以及具 乍^寬 9 M353374 圖式簡單說明】 圖1 會不根據本創作-較佳具體實施例之增亮膜之示意圖 圖二緣示圖—中之增亮膜之側視圖 圖―緣不圖二中的出光部之侧視放大圖。 圖四、、日不朗伯光線入射圖二中的增亮膜後之光強度分The brightness enhancement film of SmiTo 0 has a light concentration effect. · Supremely obvious, this creation = the first place: ^ Lin), and the change of the slope of the ^ three joints and also reach the point of the _ lightening _ light intensity distribution; several: Π = ί, Γ 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率 曲率In the scope of the patent scope of this creative work, the patent of the n=nf patent _ _ _ based on the above description for the broadest interpretation ' (four) to cover the financial (four) change and 乍 ^ Width 9 M353374 Schematic Brief Description] Figure 1 will not be based on the present invention - a preferred embodiment of the brightness enhancement film schematic view of the second side of the picture - the side view of the brightness enhancement film - the light in Figure 2 A side view of the enlarged view of the section. Figure 4. Light intensity of the brightening film in Figure 2.
【主要元件符號說明】 3 =增亮膜 300 _入光面 32 :出光部 320 :弧面 321 :第一連接處 303 :第三連接處 L11 :第一入射光 L21 :第一折射光 θη :第一入射角 0ri :第一折射角 dl、d2、d3 :距離 30 :透光基材 302 :出光平面 31 :第一參考平面 322 :斜面 323 ·第二連接處 35 .弟—參考平面 L12 ·第二入射光 L22 :第二折射光 θβ :第二入射角 er2 :第二折射角 10[Description of main component symbols] 3 = Brightening film 300 _ light incident surface 32: Light exiting portion 320: Arc surface 321 : First joint 303 : Third joint L11 : First incident light L21 : First refracted light θη : First incident angle 0ri: first refraction angle dl, d2, d3: distance 30: light-transmitting substrate 302: light-emitting plane 31: first reference plane 322: slope 323 · second joint 35. brother-reference plane L12 Second incident light L22: second refracted light θβ : second incident angle er2 : second refraction angle 10