M294667 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種多段式集光之光學膜片，特別係指一種應用於液晶 顯示器之增亮膜，以及在增亮膜之光學微結構上設置多段式不同稜鏡角之 稜鏡微結構，藉以提高增亮膜之輝度和光通量者。 : 【先前技術】 習知液晶顯示器最主要的功能需求是高亮度，高均勻度及可提高對比 • 度。習知液晶顯示器之背光模組，若在模組中加入增亮膜（Brightness enhancement film ; BEF)或稜鏡片（prism film)，便能在不增加電力消耗 及燈管數目下，而達到高亮度的功能要求。稜鏡片集光原理係藉由折射與 内部全反射（internal total reflection)，將自導光板〇ightguide)發射 到四面八方政亂光線集中至約土35的正視角（〇n—axis )方向。習知稜鏡片 的光學結構，如PCT專利W096/23649號及美國發明專利第6,280,063號 「Brightness enhancement film」發明專利案内所示之技術，其簡單之技 ❿ 術示意圖，請參照第一圖所示，該專利案中揭示-稜鏡片1，該稜鏡片】包 括-基材透明薄膜2及其上-稜鏡陣列3，該稜鏡陣列3係由第一平面如 及弟一平面北所組成，每一稜鏡頂峰角度約9〇。。 3外，在美國專利第 5771328 ?虎「Light directing film having variable height structured surface and light directing article constructed therefrom」發明專利案揭示，可藉由棱鏡頂峰高度的微小變 異消除wet-out ;見象’以求得最好的集光效果，使觀賞者可在正常操作下 獲得最佳亮度和均齊度。此稜鏡片的製程係在—高穿透率的基材薄膜上， 5 M294667 均勻塗佈感光性UV樹脂如亞克力樹藤(acryHc resin)，再利用微米壓印 技術及UV父聯量產成型。對於大多數背光模組而言，每置一片稜鏡片約可 增加60%輝度，2片稜鏡片以垂直交疊下更可提升模組輝度約達12〇%，亦即， 在降低耗電量及延長電池使㈣間之前提下，可使液晶顯示器螢幕的亮度 • 增加2β 2倍。在稜鏡片之光學結構設計中，影響模組的輝度(luminance)和 • 光通i(luminous flux)之相關結構參數包括：稜鏡溝槽角度（gr〇〇ve 7 dlreCtl〇n degree)、稜鏡結構之高度(height of the prism structure) ' Φ 基材薄膜厚度（thickness of the basal film)與基材和UV膠折射率 (Refractive of the film and UV resin)，其中又以稜鏡溝槽角度對輝度 增益值(gain)影響最大。 第一圖所不之習用稜鏡結構設計技術尚有少部份的光損產生，再參閱 • 第二圖所示，當光線自導光板發出到擴散膜之四面人方散射光進入稜鏡結 構後’約可分成四種光程運作，第一部份大約有5〇%的入射光會被反射回來 而再次被利用’如第二圖中之a區所示；第二部份的光藉由折射及全反射 ® 可增加40%-70%的輝度如第二圖之b區所示；第三部份的光自稜鏡折射到入 工氣"貝，再次進入鄰近稜鏡被使用，如第二圖中之c區所示；但第四部 份的折射光無法進入鄰近稜鏡被使用，而造成光損〇ight 1〇ss)如第二圖 中之d區所示。 除此之外，在相關之先前專利文獻方面，例如：美國專利第5, 號「Renticular Lens，Surface Light S〇urce，and U(luid CrystalDisplayM294667 VIII. New Description: [New Technology Field] This paper is about a multi-segment optical film, especially for a brightness enhancement film applied to liquid crystal displays, and on the optical microstructure of the brightness enhancement film. Set the multi-section of the different corners of the microstructure, in order to improve the brightness and luminous flux of the brightness enhancement film. : [Prior Art] The most important functional requirements of conventional liquid crystal displays are high brightness, high uniformity, and improved contrast. The backlight module of the conventional liquid crystal display can achieve high brightness without adding power consumption and the number of lamps if a brightness enhancement film (BEF) or a prism film is added to the module. Functional requirements. The principle of collecting light of the cymbal is transmitted from the light guide 〇ightguide to the direction of the positive angle (〇n-axis) of the earth 35 by refraction and internal total reflection. The optical structure of the conventional cymbal, such as the technique shown in the patent patent of the "Brightness enhancement film" of PCT Patent No. WO 096/23649 and U.S. Patent No. 6,280,063, the simple technical schematic of which is shown in the first figure. The patent discloses that the cymbal sheet 1 comprises a substrate transparent film 2 and an upper iridium array 3 thereof, and the cymbal array 3 is composed of a first plane such as a brother and a plane north. Each peak has an angle of about 9 inches. . In addition, in the US Patent No. 5771328, the "Light directing film having variable height structured surface and light directing article embedded" invention patent case reveals that the wet-out can be eliminated by the slight variation of the peak height of the prism; The best light collection effect, allowing viewers to get the best brightness and uniformity under normal operation. The process of this ruthenium is on a high-permeability substrate film, and 5 M294667 is uniformly coated with a photosensitive UV resin such as acryHc resin, which is then mass-produced using micron imprint technology and UV parent. For most backlight modules, each piece of the film can be increased by about 60%, and the two pieces of the film can be vertically overlapped to increase the brightness of the module by about 12%, that is, the power consumption is reduced. And extend the battery so that the (4) is lifted before, so that the brightness of the LCD screen can be increased by 2β 2 times. In the optical structure design of the cymbal, the relevant structural parameters affecting the luminance and luminous flux of the module include: 稜鏡 groove angle (gr〇〇ve 7 dlreCtl〇n degree), rib The height of the prism structure ' Φ the thickness of the basal film and the refractive index of the substrate and the UV resin, which is the angle of the trench It has the greatest influence on the gain value of gain. In the first figure, there is still a small amount of light loss generated by the structural design technique. Referring to the second figure, when the light is emitted from the light guide plate to the diffused surface of the diffuser film, the scattered light enters the structure. After the 'about can be divided into four optical paths, about 5% of the incident light in the first part will be reflected back and used again' as shown in the a area in the second picture; the second part of the light borrowed From refraction and total reflection, the brightness can be increased by 40%-70% as shown in the b area of the second figure; the third part of the light is self-refractive to the incoming gas "before, it is used again after entering the adjacent area. As shown in the c-zone in the second figure; but the fourth part of the refracted light cannot enter the adjacent 稜鏡 is used, resulting in light loss 〇ight 1〇ss) as shown in the d-zone in the second figure. In addition, in related prior patent documents, for example, U.S. Patent No. 5, "Renticular Lens, Surface Light S〇urce, and U (luid CrystalDisplay)
Apparatus」發明專利案揭示以上、下兩層凹或凸圓弧形稜鏡，以垂直九十 度縱k父錯之結構與技術，該上、下層稜鏡分開連結耦合不易，且對背光 6 M294667 « x ^ 65277?471 ^ _ 「BHght_ enh__ film」發明專利案揭示習知之單峰稜鏡結構， 同樣有習知液晶顯示器之背光模組亮度及均齊度不佳問題。 有鑑於此，本創作乃提出一種新穎的稜鏡結構，使其減少產生如第二 圖中第四部份之dd的光損，進而可提高f光模組的輝度和光通量者。 : 【新型内容】 : 本創作主要目的係提供—種多段式集光之光學則，其中，該高輝度 # 增亮膜之基材薄膜表面設有若干稜鏡片，該稜鏡片係包括至少-上稜鏡元 牛及下稜鏡元件，上、下稜鏡元件並聯複合而成，該下稜鏡元件頂峰形 成-第-頂峰角，上稜鏡元件頂峰形成一第二頂峰角，該第一頂峰角與第 . 二頂峰純互形賴應，藉由該第—頂峰倾第二頂峰肢-些光線全反 概折射之光損降低，且該上稜鏡元件及下稜鏡元件係上下連成一體，不 需透過界面元件連結，可以有效提升背光模組的輝度和光通量。 為達上述之目的，本創作之多段式集光之光學膜片，係包括一基材薄 鲁膜及右干稜鏡，絲材薄膜為高穿透率物質，該棱鏡連結於基材薄膜上， 且各稜鏡間連結形成陣列，且各稜鏡係包括至少一上稜鏡元件及一下稜鏡 元件4下稜鏡元件連結基材薄膜，且下稜鏡元件頂峰形成―第―頂峰角， 上矛夂鏡元件連結下稜鏡元件之頂端，該上稜鏡元件頂聲形成一第二頂峰 角藉由5亥下稜鏡疋件之第一頂峰角與上稜鏡元件之第二頂峰角，使光線 於上、下稜鏡元件間之光_全反射或補出去的光狀光損降低，並藉 由該上、下棱鏡元件上、下連結成一體而不需透過任何界面元件連結，可 以有效提昇背光模組的輝度和光通量。 M294667 【實施方式Γ 請參閱第三圖所示，為本創作之多段式集光之光學膜片4之第一實施 例’其中’該光學膜片4係包括一基材薄膜5及若干稜鏡6，該基材薄膜5 係由-高穿鱗物質構成，該基材顏5需倶備足夠透光清晰度及結構強 度，足以應用在特定的光學產品及較佳的抵抗溫度及老化，較佳為聚乙烯 • 對苯二甲酸酯（Polyethylene Terephthalate ; PET)，或聚碳酸酯 ; (Po1輝b0她；PC),但上列基材薄膜材料5之材料揭示僅為便於說明該 φ 基材薄膜5之特性，並非用以限制本創作之範疇。 上述之稜鏡6設於該基材薄膜5之上，且各稜鏡6間相鄰連結形成棱 鏡陣列，每-稜鏡6係包括至少一下棱鏡元件61及一上稜鏡元件犯，該下 稜鏡元件61連結於基材_ 5之上，且該下稜鏡元件61係包括—對下棱 鏡面6a及6b，該下稜鏡面如與此斜面轴線向上延伸交又使該下稜鏡元 .件61之頂峰形成—第-頂峰角Θ,，該上稜鏡元件62連結於下稜鏡元件61 之上端，該上稜鏡元件62係包括一對上稜鏡面7aA7b，該上棱鏡面％及 # %斜面軸線向上延伸交叉，使上稜鏡元件62頂端形成一第二頂蜂角心 且該下稜鏡面6a與6b與上稜鏡面7a與7b間分別形成一夹角“，使赴 稜鏡元件62與下複鏡元件61上、下連結成一體不必透過任何界面元件， 名第頂峰角、第二頂峰角及夾角“之範圍不限，在本創作之第一實 施例中，係列舉第-頂物1>第二頂峰角㈣例，且上稜鏡元件62之 上&鏡面7a轉7b斜面軸線向上延伸交叉形成之頂峰形狀不限為圖3中所 示之三角尖端形狀，該上稜鏡元件62頂峰形狀也可以是如圓弧(r〇und)之 8 M294667 上述各稜鏡6之T稜镜元件61之底部I度f军如以限制，可為相同寬 度或不相同寬度’該上稜鏡元件62之上稜鏡面7a及7b之第一垂直高度η】 下牙文鏡元件61之下稜鏡面如及6b之第二垂直高度H2之大小範圍也不加 限制，可以藉由該第—垂直高度Ηι及第二垂直高度&之_調配，而得到 不同之光損控制及輝度和光通量控制與調整。 請再配合第四圖（3)、第四圖⑹、第四圖（〇及第四圖⑷所示，顯示 本創作之多段式集光之光學膜片4於實際光學功能運作上之增亮原理，其 中，如第四圖（a)所示，為當入射光rayl從基材薄膜5進入稜鏡6,對於下 棱鏡兀件61而言，該入射光rayl透過下稜鏡面如經反射到下稜鏡元件61 内部，再由下稜鏡面6b之折射點A折射到空氣，按Snell，s定律知，msin msinr2 ’其中m，η2分別為稜鏡與空氣的折射率，^與72分別為入 射角與折射角。若稜鏡6以亞克力樹脂材料構成為例，m=1 494，空氣n2=1， 若入射光ray 1之反射光線與下稜鏡面此沿伸折射點a之法線向量乂夾角 為04,則折射光rayr與折射點A之法線向量Νι之折射角05=sin_1(1•觀也 00，在一些A與稜鏡尺寸值，折射光『砂厂會直接折射至光學稜鏡4外， 而無法入射到鄰近的稜鏡6，因而造成光損。 但以本創作之多段式之光學稜鏡4，在相同入射光邮經由下棱鏡面 6a反射進入上稜鏡元件62後，則會從上稜鏡面7b之一折射點Γ折射一折 射光ray2到空氣，若入射光rayl之反射光線與上稜鏡面几之一法線向量 N2之夾角為£1，折射光ray2’與折射點之—法線向量N2之折射角為 sinYljgdsineO，由第四圖（a)所示，在一些…與稜鏡尺寸值，折射光 my2/較折射光rayr向下偏折進入鄰近稜鏡6，可以回收光線，進而可達 9 M294667 到增加其輝度和光通量之功效。 - 再如第四圖⑹及第四圖4(c)所示，_可推，本創作之多段式集光之 光學膜片，每個稜鏡6經由該下稜鏡元件61與上稜鏡元件62間之多段式 之光學稜鏡結構，使折射光ray2,較折射光_，可收敏到正視角（㈣仏) 方向，而可增加其輝度及光通量。 • 何諱言，此财段式之光學舰結構設計，在-些親軌跡，無法 { 有效回收，但這些光線在傳統的稜鏡頂峰角度約90。之稜鏡，也是無法回 • 收，見第四圖⑷。但基於上述說明，經由本創作之多段式集光之光學膜片 4結構，確可有效回收一些光線以增加其輝度。 請再配合第五圖所示，以下為驗證本創作之多段式集光之光學膜片4 之實際增加輝度與光通量的功效，兹列舉若干比較例及操作例之光學模擬 以對照顯示本創作之功效，其中： • [比較例1] 為習知沒有稜鏡片只有擴散片下之光學模擬，經由TracePro這套軟體 鲁 <乍一個初步的驗註’其光學模擬結構如第五圖所示。該背光模組之光學模 擬機構20係採用側光式背光模組，側向光源1〇係採用冷陰極螢光管 cathode flU0rescent lamp ; CCFL)或發光二極體(LE：D)，光源經由反射鏡 面ll(ref lector)進入導光板i2(light guide plate)，再藉由反射板 13(reflector)之散射點I4(scattering dots)，將光線反射回導光板中， 防止光源外漏，以增加光線的使用效率，接著光線進入擴散膜15(diffuser sheet)以提供一個均勻的面光源，使射出之光線更加均勻，從正面看不到 反射點陰影。擴散膜15上放置一光線接收面18。模擬結果如第六圖中之曲 M294667 線π所示，其平第六圖乏W線Π是本創芥 candela distribution plot，且該水平軸向座標轴(X軸）代表視角 (Viewing Angle);垂直軸向座標(y軸)代表軸向光強度比值。且〇度視角 軸向光強度比值在此比較例中設為1。 [比較例2] 以1知牙文鏡面夾角為90之上棱鏡片16與下棱鏡片17(prism sheet) 二片之頂峰稜線垂直正交置於擴散膜15與光線接收面18之間，這種結構 經由TracePro這套軟體作一個初步的驗証，經由第五圖之光學模擬機構2〇 模擬，模擬結果如第六圖中之曲線X2所示。其中第六圖之曲線是本創 作之光學設計之 rectangUiar candeia distribution plot。 [操作例1] 為本創作之多段式集光之光學膜片4的第-操作例，#中，該第一頂 峰角〜為1G4，第二頂峰角02為9〇。。下稜鏡元件61底部寬度w為5〇" m第垂直冋度扎/第二垂直高度h2=1/6，該稜鏡6之製造方法無限制， k用的材料為间透明材質，此實施例係採用亞克力樹脂其 ㈣率為1. 494。將此實施例之多段稜鏡6二片以頂峰棱線垂直正交置於擴 、、5 ”光線接收面18之間，經由如滅⑺這套軟體作—個初步的驗 ^，並經由第五圖所示之光學模擬機構2〇模擬驗證而模擬驗證結果如第 六圖中之麟X3所示，其中第六圖之曲線χ3是本創作之光學設計之 candela distribution _。 [操作例2] 為本創作之多段輕光之光學膜片4㈣三操刺，其中，該第一頂 M294667 、*垂直1^度Hl/第二垂直高度H2:l/6，該稜鏡6之製造方法無限 制^用的材料為兩透明材質，此實施例係採用亞克力樹脂(acrylic resin) 其折射率為丨· 494。將這種光學結構之多段稜鏡6二ϋ以頂峰稜線垂直正交 置於擴散膜15與光線接收面18之間，經由TracePr〇這套軟體作一個初步 :_正，並經由第五圖所示之光學模擬機構20加以模擬驗證，而模擬驗證 7 結果如第六圖中之曲綠Υ/ί & - 之曲線X4所不，其巾第六圖之曲線χ4是本創作之光學設 •計之 reCtangular candela distribution Pl0t。 [操作例3] 為本創作之多段式集光之光學膜片4的第三操作例，其中，該第一頂 角為1〇4，第一頂峰角02為94。。下稜鏡元件61底部寬度w為50// m，射第-垂直高度Ηι^直高度Η2=ι/2，該魏6之製造方法無限 制，選用的材料為高透明材質，此實施例係採用亞克力樹脂(㈣ 其折射率為1· 494。將這種光學結構之多段稜鏡6二片以頂峰棱線垂直正交 # £於擴散膜15與光線接收面18之間，經由wpr〇這套軟體作-個初步 的驗註，並經第五圖所示之光學模擬機構20加以模擬驗證，而模擬驗證结 果如第六圖中之曲線X5所示，其中第六圖之曲線χ5是本創作之光學設計 之 rectangular candela distribution plot 。 [操作例4] 為本創作之多段式集光之光學膜片4的第四操作例，其中，該第一頂 峰角Θ,為104 ’第一頂峰角02為94。。下稜鏡元件以底部寬度$為_ t其中第-《高度_二垂直高度H2=2/3，該稜鏡6之製造方法無限 12 M294667 M^f，lc resin) 其折射率為1. 494。將這種光學結構之多段稜鏡6二片以頂峰棱線垂直正交 置於擴散膜15與光線接收面18之間，經由TracePr〇這套軟體作一個初步 的齡’並經第五圖所示之光學模擬機構20加以模擬驗證，而模擬驗證結 果如第六圖中之曲線Μ所示，其中第六圖之曲線χ6是本創作之光學設計 之 rectangular candela distribution plot 。 以下係將上列之比較例！、比較例2及本創作之第一操作例〜第四操作The invention patent case discloses the above and the next two layers of concave or convex arc-shaped 稜鏡, with the structure and technology of vertical ninety degrees vertical k parent error, the upper and lower layers of 稜鏡 separate coupling coupling is not easy, and the backlight 6 M294667 « x ^ 65277? 471 ^ _ "BHght_ enh__ film" invention patent case reveals the conventional single-peak structure, and there is also a problem of poor brightness and uniformity of the backlight module of the conventional liquid crystal display. In view of this, the present invention proposes a novel 稜鏡 structure that reduces the light loss of dd as in the fourth part of the second figure, thereby improving the luminance and luminous flux of the f-light module. [New Content]: The main purpose of this creation is to provide a multi-stage optical collection method, wherein the surface of the high-luminance film of the high-brightness film is provided with a plurality of cymbals, and the cymbal system includes at least稜鏡元牛 and the lower jaw element, the upper and lower jaw elements are combined in parallel, the peak of the lower jaw element forms a -top-peak angle, and the peak of the upper jaw element forms a second peak angle, the first peak The angle between the angle and the second peak is purely interdependent, and the light loss of the second peak of the second peak of the first peak is reduced, and the upper jaw element and the lower jaw element are connected up and down. Integral, without the need to connect through interface components, can effectively improve the brightness and luminous flux of the backlight module. For the above purposes, the multi-stage optical film of the present invention comprises a substrate thin film and a right dry film, the wire film is a high transmittance material, and the prism is bonded to the substrate film. And each of the turns is formed into an array, and each of the turns includes at least one upper element and the lower element 4, the lower element is connected to the base film, and the peak of the lower element forms a “top” angle, The upper frog mirror element is coupled to the top end of the lower jaw element, and the top cymbal element top sound forms a second apex angle by the first apex angle of the 5 稜鏡疋 稜鏡疋 与 and the second apex angle of the upper 稜鏡 element The light-light loss of the light between the upper and lower jaw elements is totally reduced or compensated, and the upper and lower prism elements are connected to each other without being connected through any interface elements. It can effectively improve the brightness and luminous flux of the backlight module. M294667 [Embodiment Γ Please refer to the third figure, which is a first embodiment of the multi-stage optical film 4 of the present invention, wherein the optical film 4 comprises a substrate film 5 and a plurality of enamels. 6. The substrate film 5 is composed of a high-velocity material, and the substrate 5 needs to have sufficient transparency and structural strength to be applied to a specific optical product and preferably to withstand temperature and aging. Preferably, polyethylene terephthalate (PET), or polycarbonate; (Po1 hui b0 her; PC), but the material of the above listed substrate film material 5 is only for convenience of explanation of the φ base The characteristics of the film 5 are not intended to limit the scope of this creation. The above-mentioned crucible 6 is disposed on the substrate film 5, and each of the crucibles 6 are adjacently connected to form a prism array, and each of the crucibles 6 includes at least the lower prism element 61 and an upper crucible element. The cymbal element 61 is coupled to the substrate _ 5, and the chin element 61 includes a pair of lower prism faces 6a and 6b extending upwardly from the axis of the slanting surface to make the chin The top peak of the member 61 is formed - a top peak angle Θ, the upper jaw member 62 is coupled to the upper end of the lower jaw member 61, and the upper jaw member 62 includes a pair of upper jaw faces 7aA7b, the upper prism face The % and #% slope axes extend upwardly so that the top end of the upper jaw element 62 forms a second top corner and the lower jaw faces 6a and 6b form an angle with the upper jaw faces 7a and 7b, respectively. The top element 62 and the lower multi-mirror element 61 are integrally connected to each other without passing through any interface element, and the range of the top apex angle, the second apex angle and the included angle is not limited. In the first embodiment of the present invention, An example of the first top object 1 > the second peak angle (four) is listed, and the upper surface of the upper element 62 is & the mirror surface 7a is turned to the 7b slope axis. The shape of the peak formed by the upwardly extending cross is not limited to the triangular tip shape shown in FIG. 3. The peak shape of the upper jaw element 62 may also be 8 R294, such as a circular arc (R〇und). The bottom of the mirror element 61 is limited to the same width or different width 'the first vertical height η of the upper faces 7a and 7b of the upper jaw element 62】 below the lower mirror element 61 The size range of the second vertical height H2 of the surface and the 6b is not limited, and the light loss control and the luminance and luminous flux can be obtained by the first vertical height Ηι and the second vertical height amp. Control and adjustment. Please cooperate with the fourth picture (3), the fourth picture (6), the fourth picture (〇 and the fourth picture (4) to show the brightening of the optical optical film 4 of the multi-stage collecting light of the present invention in the actual optical function operation. The principle, wherein, as shown in the fourth figure (a), when the incident light ray1 enters the crucible 6 from the substrate film 5, for the lower prism element 61, the incident light ray1 passes through the lower crucible surface as reflected The inside of the lower jaw element 61 is refracted to the air by the refraction point A of the lower jaw surface 6b. According to Snell, s law, msin msinr2 'where m, η2 are the refractive indices of 稜鏡 and air, respectively, ^ and 72 respectively Incident angle and refraction angle. If 稜鏡6 is made of acrylic resin material, m=1 494, air n2=1, if the reflected light of the incident light ray 1 and the normal vector of the lower 稜鏡 face of the refracting point a乂 The angle of 乂 is 04, the refraction angle of the refracted light rayr and the normal point of the refraction point A Νι = 05 = sin_1 (1 • Guan also 00, in some A and 稜鏡 size values, refracted light “sand factory will directly refract to optical稜鏡4, but can not be incident on the adjacent 稜鏡6, thus causing light loss. However, the multi-section optical 本 of this creation 4. After the same incident light is reflected into the upper jaw element 62 via the lower prism surface 6a, a refracted light ray2 is refracted from the refraction point 稜鏡 of the upper pupil surface 7b to the air, if the reflected light of the incident light ray1 is on The angle between the normal vector N2 of one of the faces is £1, and the angle of refraction of the refracted light ray2' and the normal vector N2 is sinYljgdsineO, as shown in the fourth figure (a), in some... The size value, the refracted light my2/ is deflected downwards into the adjacent 稜鏡6, which can recover the light, and then up to 9 M294667 to increase its brightness and luminous flux. - Again as shown in the fourth figure (6) and the fourth figure 4(c), _ pushable, the multi-stage optical film of the present invention, each of the cymbals 6 via the multi-section optical 稜鏡 structure between the chin element 61 and the upper cymbal element 62 , so that the refracted light ray2, compared with the refracted light _, can be sensitive to the positive viewing angle ((4) 仏) direction, but can increase its luminance and luminous flux. • He Ruyan, this financial segment of the optical ship structure design, in some of the pro track Can't {effectively recycle, but these rays are about 90 in the traditional dome angle. Mirror, can not be returned to receive, see the fourth picture (4). But based on the above description, through the creation of the multi-stage optical optical film 4 structure, it can effectively recover some light to increase its brightness. Please cooperate with the fifth As shown in the figure, the following is to verify the actual increase in luminance and luminous flux of the multi-segment optical film 4 of the present invention. The optical simulations of several comparative examples and operation examples are listed to show the effect of the creation, wherein: [Comparative Example 1] It is conventionally known that there is no optical simulation of the cymbal under the diffusion sheet, and the optical simulation structure of the software set by TracePro is shown in Fig. 5 as shown in the fifth figure. The optical analog mechanism 20 of the backlight module adopts an edge-lit backlight module, and the lateral light source 1 is a cold cathode fluorescent tube cathode flu0rescent lamp; CCFL) or a light emitting diode (LE: D), and the light source is reflected. The mirror ll (ref lector) enters the light guide plate i2 (light guide plate), and then reflects the light back into the light guide plate by the scattering dots I4 of the reflector 13 to prevent the light source from leaking to increase the light. The efficiency of use, then the light enters the diffuser sheet 15 to provide a uniform surface source that makes the emitted light more uniform and does not see reflection point shadows from the front. A light receiving surface 18 is placed on the diffusion film 15. The simulation result is shown as the curve π of the M294667 line in the sixth figure, and the flat sixth figure lacking the W line is the candela distribution plot, and the horizontal axis coordinate axis (X axis) represents the viewing angle (Viewing Angle); The vertical axial coordinate (y-axis) represents the axial light intensity ratio. And the twist angle of view The axial light intensity ratio is set to 1 in this comparative example. [Comparative Example 2] The prism sheet 16 and the lower prism sheet of the prism sheet are vertically orthogonally disposed between the diffusion film 15 and the light receiving surface 18, with the angle of the mirror surface being 90. The structure is initially verified by the TracePro software, and is simulated by the optical simulation mechanism of the fifth figure. The simulation result is shown by the curve X2 in the sixth figure. The curve of the sixth figure is the rectangUiar candeia distribution plot of the optical design of the creation. [Operation Example 1] In the first operation example of the optical film 4 of the multi-stage collecting light of the present invention, #1, the first peak angle ~ is 1G4, and the second peak angle 02 is 9 inches. . The bottom width w of the lower jaw element 61 is 5〇" m first vertical twist/second vertical height h2=1/6, the manufacturing method of the crucible 6 is not limited, and the material for k is a transparent material, 494。 The embodiment using a acryl resin (four) rate of 1. 494. The plurality of segments 6 of this embodiment are placed perpendicularly perpendicular to the peak ridge line between the extended, 5" light receiving surface 18, and the software is tested as a preliminary test, and the first The optical simulation mechanism shown in Figure 5 is simulated and the simulation verification results are shown in Lin X3 in the sixth figure. The curve χ3 in the sixth figure is the candela distribution of the optical design of the creation. [Operation 2] For the creation of the multi-segment optical film 4 (four) three spurs, wherein the first top M294667, * vertical 1 ^ degree Hl / second vertical height H2: l / 6, the manufacturing method of the 稜鏡 6 is unlimited ^The material used is two transparent materials. In this embodiment, the refractive index of the acrylic resin is 丨·494. The multi-section 稜鏡6 ϋ of the optical structure is perpendicularly placed on the diffusion film by the peak ridge line. 15 and the light receiving surface 18, through the TracePr 〇 software set as a preliminary: _ positive, and through the optical simulation mechanism 20 shown in the fifth figure to simulate verification, and the simulation verification 7 results as in the sixth picture Green Υ / ί & - The curve of X4 is not, the curve of the sixth figure of the towel 4 is the reCtangular candela distribution Pl0t of the optical device of the present invention. [Operation Example 3] is a third operation example of the multi-stage optical film 4 of the present invention, wherein the first vertex angle is 1〇4 The first peak angle 02 is 94. The bottom width of the lower jaw element 61 is 50 / / m, the first - vertical height Η ι ^ straight height Η 2 = ι / 2, the manufacturing method of the Wei 6 is unlimited, the selected The material is a highly transparent material. In this embodiment, an acrylic resin is used ((4) its refractive index is 1.494. The multi-section 稜鏡6 of this optical structure is perpendicular to the peak ridge line. Between the receiving faces 18, a preliminary test is made via the wpr〇 software, and the simulation is performed by the optical simulation mechanism 20 shown in FIG. 5, and the simulation verification result is as shown by the curve X5 in the sixth figure. The curve χ5 of the sixth figure is the rectangular candela distribution plot of the optical design of the present invention. [Operation Example 4] The fourth operation example of the multi-stage optical film 4 of the present creation, wherein the first peak Corner Θ, is 104 'first peak angle 02 is 94.. 稜鏡 element The bottom width is _ t where the first - "height _ two vertical height H2 = 2 / 3, the manufacturing method of the 稜鏡 6 is infinite 12 M294667 M ^ f, lc resin) its refractive index is 1. 494. Will this The plurality of segments 稜鏡6 of the optical structure are vertically orthogonally disposed between the diffusion film 15 and the light receiving surface 18 with the peak ridge line, and the optical body of the TracePr 作 is used as a preliminary age and is optically shown in FIG. The simulation mechanism 20 is simulated and the simulation verification result is as shown by the curve 第六 in the sixth figure, wherein the curve χ6 of the sixth figure is the rectangular candela distribution plot of the optical design of the present invention. The following is a comparison example listed above! Comparative Example 2 and the first operation example to the fourth operation of the present creation
由上表結果中可以明顯驗證本創作之多段式集光之光學膜片4之〇度 視角轴向發光強度、G度視㈣向輝纽光通量等數據均優於該第—比較例 及第二比酬，且該第-頂峰角Θ,及第二頂峰角02間之值並孙以限制何 者為大何者為小，其中最佳之實施例狀態為該第—頂峰角&大於第二頂峰 角h之條件下，可以產生最佳之輝度及光通量。 13 M294667 請再配合策七哥，為本創作乏多段-顯 例，其中，顯不該稜鏡6係包括一下稜鏡元件61、兩上稜鏡元件62及肋 該上稜鏡元件62與下稜鏡元件61以如同第三圖所示之上、下連纟士構方弋 組合，而該上稜鏡元件63則包括-對上稜鏡面如及池，該上稜鏡面如及 8b分別對應直接連結至該上稜鏡元件62之兩上稜鏡面％及几，使該上棱 . 鏡元件63結合於上稜鏡元件62之上，JL該上魏面8a及8b與上稜鏡面 7a&7b間形成一夾角α1，該上稜鏡面8a及8b之斜面軸線向上延伸交叉 • 形成一第三頂峰角&，而經由此下棱鏡元件6卜兩上稜鏡元件62及63 之上、下連結結構，該上稜鏡元件63之上稜鏡面8a及牝亦形成有一第三 垂直高度H3,再依上述之第一頂峰角θ1、第二頂峰角…、第三頂峰角^、 Τ稜鏡元件61底部寬度w、第一垂直高度Ηι、第二垂直高度Η2如及第三垂 直兩度Η3等結構及參數而亦可達到上列第三圖〜第六圖所列舉本創作使液 . 晶顯示器之背光模組增加輝度及光通量之功效，且同理可證，械第一頂 峰角Θ)第二頂峰角θ2>第三頂峰角θ3等條件下為最佳實施例可使稜鏡6 藝 籠纽最佳之增加輝度及光通量之功效。 胃再> 閱第八圖所示，$本創作為本創作之多段式集光之光學膜片4 的第一實％例，其中，顯示該稜鏡6之下稜鏡元件W之下棱鏡面如及肋 向上延伸形成之頂峰形狀為圓弧形狀，而該上稜鏡元件62之上稜鏡面7a 及7b向上延伸之頂峰形狀為三角尖峰形狀且該下棱鏡元件6i之圓弧形 頁峰”上1鏡元件62間之連結結構與位置不限，在本創作中侧舉該下棱 鏡元件61之圓弧形頂峰兩側與上稜鏡元件62之兩連接點d及〇,高於下稜 鏡树61之圓弧形頂峰兩侧下緣與下稜鏡面如及此之切點c及γ之連結 14 M294667 結耩及位置為其說研之實施例，而此種下稜鏡元伴m舆上稜鏡元伴谠之 纟且合仍可達到上述摘作使液㈣㈤之背光模組增加職及紐量之功 效0 清再配合第九騎示林創作之多段式集光之光學則4的第四實 施例，其中，顯示該稜鏡6之下棱鏡元件61之下棱鏡面如及北向上延伸 形成之頂峰形狀為三肖尖峰形狀，義上稜鏡元件62之上稜鏡面％及％ 向上延伸之頂峰形㈣形狀，且該上稜鏡元件62之圓弧_峰與下稜 鏡το件61間之連結結構與位置视，在摘作巾係尊該下稜鏡元件^ 之三角尖端頂峰連結至上稜鏡元件62之難形頂峰之幅E之連結結構及 位置為其制之實施例，聽種下稜鏡元件61與上魏元件62之組合仍 可達到上述本創作使液晶顯示!!之#光模組增加輝度及辆量之功效。 請再參閱第十圖所示，為本創作之多段式集光之光學膜片4的第五實 鉍例，其中，顯示該稜鏡6之下稜鏡元件61之下稜鏡面如及此向上延伸 形成之頂峰雜為三角尖峰靴而該上稜鏡元件62之上稜鏡面^及几 向上延伸之頂峰形狀為三角尖峰形狀，而該上棱鏡元件⑽之上棱鏡面如 及8b向上延伸之頂峰形狀為圓孤形狀，*此種下稜鏡元件6卜上棱鏡元件 62及上棱鏡元件63之組合仍可達到上述本_使液晶顯示器之背光模组增 加輝度及光通量之功效，並且第十騎揭示之實施例，僅為本創作便於說 明之例’舉歧靖訂魏树61之下魏面及％向上延伸形成之 形狀為圓弧形狀或該上稜鏡元件62之上稜鏡面域％向上延伸之形狀為圓 弧形狀等單贼下魏元件6卜域鏡猶62及上魏树63間任二個 元件之頂峰形狀為JJ弧形狀之㈣及組合，彳科脫本創作之主張範嘴。 15 M294667 施例，其中，顯示該光學膜片4之基材薄膜5上由第三圖所示第一實施例 中以若干個由下棱鏡元㈣與上稜鏡元件62組成之兩段式稜鏡6,相鄰連 結第七圖所示以若干個由下稜鏡元件6卜上稜鏡元件62及上棱鏡元件63 組成之三段式稜鏡6,❿達成本_增加液晶顯轉之輝度和光通量之功 效，並藉由各稜鏡6頂峰高度之微小變異，可進一步消除習知液晶顯示器 背光模組之wet-out缺點。而上述之稜鏡6陣列之組合，並非以第三圖與 弟七圖所示之兩段或多段式稜鏡6組合為限，舉凡是將如第人圖〜第十圖 所不之第三實施例〜第五實施例所示之稜鏡6與該第三圖及第七圖所示之 第-實施例與第二實施姻至少兩種稜鏡6之相鄰連結成稜鏡_之光學 膜片4結構，當亦不脫本創作之主張範嘴。亦即透過不同高度之多段式棱 鏡6以高觸隔交錯(syntaetie)制祕顺以錢财式(—tie)排 成陣列可以消除習知背光模組之wet—〇ut現象，可大幅改善液晶顯示器之 輝度和光通量。 以上第三圖〜第十-圖所示本創作之多段式集光之光學膜片，其中， 所揭不之說_容及圖式，健為便於_與_摘作技術内容及技術 手&所列舉較佳實施例之—隅，並非肋拘限本創作之範♦舉凡是針對 乍之、π構、技術與手段所為之等效元件替換與置換，當不脫本創作所 主張之範疇，其範圍將由以下之申請專利範圍來界定之。 【圖式簡單說明】 第—圖係習知背光模組之稜鏡結構示意圖； 第二圖係習知背光模組之稜鏡光學反射與折射路徑圖，· 16 M294667 第三圖為本創作之第一實施例爾； 第四圖（a)為本創作之稜鏡折射光回收光線增加輝度之光線路彳①圖· 第四圖（b)及第四圖（c)為本創作之稜鏡折射光收歛至正視角之光線路押 圖； 弟四圖（d)為本創作之稜鏡無法回收折射光之路徑圖； 第五圖為驗證本創作稜鏡功效之光學模擬機構結構圖； 第六圖為本創作之比較例一、比較例二及操作例一〜四中稜鏡光學模擬結 | 果之光學軸向光強度數據曲線圖； 第七圖為本創作之第二實施例圖； 第八圖為本創作之第三實施例圖； 第九圖為本創作之第四實施例圖； 第十圖為本創作之第五實施例圖； 第十一圖為本創作之第六實施例圖。 【主要元件符號說明】 1稜鏡片 2材透明薄膜 3稜鏡陣列 3a第一平面 3b第二平面 4光學膜片 5基材薄膜 6稜鏡 61下稜鏡元件 6a下棱鏡面 6b下棱鏡面 62上稜鏡元件 7a上棱鏡元件 7b上稜鏡元件 63上稜鏡元件 8a上稜鏡元件 17 M294667 8b 上棱鏡元件 a 夾肖 a 1 夾角 θ ϊ 第一頂峰角 Θ 2 第二頂峰角 Θ 3 第三頂峰角 w 底部寬度 Hi 第一垂直高度 H2 第二垂直高度 rayl 入射光 A 折射點 r ϊ 入射角 7 2 折射角 Νι 法線向量 ray 1'折射光 A， 折射點 ray2'折射光 n2 法線向量 Θ 4 夾角 Θ 5 折射角 ε 1 夾角 ε 2 折射角 XI〜X6曲線 20 光學模擬機構 10 側向光源 11 反射鏡面 12 導光板 13 反射板 14 散射點 15 擴散膜 16 上稜鏡片 17 下稜鏡片 18 光線接收面 Ha 第三垂直高度 C 切點 C 切點 D 連接點 r 連接點 E 中點 18From the results of the above table, it can be clearly verified that the data of the multi-segment optical film 4 of the present invention has a sharp viewing angle, an axial luminous intensity, and a G-degree (four) to Huiguang luminous flux, which are superior to the first comparative example and the second. Ratio, and the value of the first-peak angle Θ, and the second peak angle 02, and the grandson to limit which is smaller, wherein the best embodiment state is the first-peak angle & greater than the second peak Under the condition of angle h, the best brightness and luminous flux can be produced. 13 M294667 Please cooperate with the seven brothers, this is a lack of multi-segment-exhibition, in which it is obvious that the 6-series includes the lower jaw element 61, the two upper jaw elements 62 and the ribs of the upper jaw element 62 and the lower The 稜鏡 element 61 is combined with the upper and lower 纟 构 构 如同 , , , , , , , , , , , , , , , , , , , 63 63 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 Directly coupled to the upper and lower sides of the upper jaw element 62, such that the upper edge. The mirror element 63 is coupled to the upper jaw element 62, JL the upper surface 8a and 8b and the upper surface 7a & An angle α1 is formed between 7b, and the slope axes of the upper jaw faces 8a and 8b extend upwardly to form a third peak angle & and the lower prism elements 6 and the upper and lower jaw members 62 and 63 pass over and under. The connecting structure, the upper surface 8a and the top surface of the upper jaw element 63 are also formed with a third vertical height H3, and then according to the first peak angle θ1, the second peak angle..., the third peak angle ^, Τ稜鏡The bottom width w of the element 61, the first vertical height Ηι, the second vertical height Η2, and the third vertical two degrees Η3 and the like The number can also be as shown in the third to sixth figures listed above. The creation of the liquid crystal display backlight module increases the brightness and luminous flux, and the same can be proved, the first peak of the machine is the second peak. The angle θ2 > the third peak angle θ3 and the like is the best embodiment to optimize the brightness and luminous flux of the 稜鏡6 art cage. Stomach Re-> As shown in the eighth figure, $this creation is the first real example of the multi-segment optical film 4 of the creation, in which the prism below the 稜鏡6 element is displayed. The peak shape formed by extending the surface and the rib upward is a circular arc shape, and the peak shape of the upper surface 7a and 7b of the upper jaw element 62 extending upward is a triangular peak shape and the arcuate peak of the lower prism element 6i The connection structure and position between the upper mirror elements 62 are not limited. In the present creation, the two connection points d and 〇 of the arc-shaped peaks of the lower prism element 61 and the upper jaw element 62 are raised sideways. The lower edge of the arc-shaped peak of the eucalyptus 61 and the lower jaw surface and the tangent point c and γ of the joint 14 M294667 The crucible and the position of the embodiment, and the lower jaw element with m The combination of the above-mentioned 稜鏡 稜鏡 谠 仍 仍 仍 仍 仍 仍 仍 仍 仍 仍 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光a fourth embodiment, wherein the prism surface below the prism element 61 is displayed as if extending in the north direction The shape of the peak is a three-sharp shape, and the shape of the peak (4) of the upper surface of the upper surface of the element 62 and the upper surface of the element 62 is increased, and the arc_peak and the lower part of the upper element 62 are between the elements 61. The connection structure and the positional view, the connection structure and the position of the width E of the top end of the upper jaw element 62 connected to the top end of the upper jaw element 62 are selected as an embodiment of the structure The combination of the 稜鏡 element 61 and the upper wei element 62 can still achieve the effect of increasing the brightness and the amount of the liquid crystal display by the liquid crystal display!! Please refer to the tenth figure, which is the multi-stage of the creation. A fifth embodiment of the optical film 4 for collecting light, wherein the top surface of the lower surface of the crucible element 61 is formed as a triangular peak spike and the upper crucible element is formed. The top surface of the upper surface of the upper surface of the upper prism element (10) has a triangular peak shape, and the shape of the peak of the upper prism element (10) above the prism surface and the upward peak of 8b is a circular shape, such a lower jaw element 6 The combination of the upper prism element 62 and the upper prism element 63 can still be achieved This _ enables the backlight module of the liquid crystal display to increase the brightness and luminous flux effect, and the tenth riding reveals the embodiment, which is only an example of the ease of description of the creation. The shape is a circular arc shape or the shape of the upper surface of the upper jaw element 62 extending upward is a circular arc shape, and the like, the single thief lower element, the 6-domain mirror 62, and the upper Wei tree 63, the two components. The shape of the peak is the (4) and combination of the shape of the JJ arc, and the proposition of the invention is based on the 15 M294667 embodiment, wherein the first film shown on the substrate film 5 of the optical film 4 is shown in the third figure. In the example, a plurality of two-stage 稜鏡6 consisting of a lower prism element (4) and an upper cymbal element 62 are adjacently connected to the seventh figure, and a plurality of lower cymbal elements 6 are mounted on the upper 62 element 62 and The three-stage 稜鏡6 composed of the prism element 63 achieves the effect of increasing the brightness and luminous flux of the liquid crystal display, and further eliminates the conventional liquid crystal display backlight module by the slight variation of the peak height of each 稜鏡6. The weakness of the wet-out. The combination of the above-mentioned array of 稜鏡6 is not limited to the combination of the two-stage or multi-segment 稜鏡6 shown in the third figure and the seventh figure, and the third is not the third figure as shown in the first figure to the tenth figure. The 稜鏡6 shown in the embodiment to the fifth embodiment and the first embodiment and the second embodiment shown in the third and seventh figures are connected to each other at least two 稜鏡6 The structure of the diaphragm 4, when it does not deviate from the idea of the creation of the mouth. That is to say, the multi-segment prisms 6 of different heights can be arranged in an array by means of a high-synchronized interlace (syntaetie) system to eliminate the wet-〇ut phenomenon of the conventional backlight module, which can greatly improve the liquid crystal. The brightness and luminous flux of the display. The above-mentioned third figure to the tenth-figure shows the multi-segment optical film of the present invention, in which the description and the figure are not easy to be _ and _ extracted as technical content and technical hand & The preferred embodiment of the present invention is not limited to the scope of the creation of the ♦ 凡 举 、 、 、 、 、 、 、 π π π 、 、 π π π π π π 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效 等效The scope will be defined by the scope of the following patent application. [Simple diagram of the diagram] The first diagram is a schematic diagram of the structure of the conventional backlight module; the second diagram is the optical reflection and refraction path diagram of the conventional backlight module, · 16 M294667 The third picture is the creation The first embodiment (a) is the optical circuit for the refracted light to recover the light to increase the brightness of the 彳1, the fourth picture (b) and the fourth picture (c) The refracted light converges to the light line of the positive viewing angle; the fourth picture (d) is the path diagram of the refracted light that cannot be recovered after the creation; the fifth picture is the structural diagram of the optical simulation mechanism for verifying the effect of the creation; The six figures are the comparative example 1 of the creation, the comparison example 2, and the operation examples 1 to 4, the optical analog simulation results of the optical axial light intensity data; the seventh figure is the second embodiment of the creation; The eighth embodiment is a third embodiment of the creation; the ninth drawing is a fourth embodiment of the creation; the tenth is a fifth embodiment of the creation; the eleventh figure is the sixth embodiment of the creation examples. [Description of main component symbols] 1 稜鏡 2 2 transparent film 3 稜鏡 array 3a First plane 3b Second plane 4 Optical film 5 Substrate film 6 稜鏡 61 Lower jaw element 6a Lower prism face 6b Lower prism face 62 Upper member 7a upper prism member 7b upper member 63 upper member 8a upper member 17 M294667 8b upper prism member a clip a1 angle θ ϊ first peak angle Θ 2 second peak angle Θ 3 Three peak angle w bottom width Hi first vertical height H2 second vertical height rayl incident light A refraction point r 入射 incident angle 7 2 refraction angle Νι normal vector ray 1 'refracted light A, refraction point ray2' refracted light n2 normal Vector Θ 4 Angle Θ 5 Refraction angle ε 1 Angle ε 2 Refraction angle XI~X6 Curve 20 Optical simulation mechanism 10 Lateral light source 11 Mirror surface 12 Light guide plate 13 Reflector 14 Scattering point 15 Diffusion film 16 Upper film 17 Lower cymbal 18 Light receiving surface Ha Third vertical height C Cutting point C Cutting point D Connection point r Connection point E Midpoint 18