200900745 九、發明說明： 【發明所屬之技術領域】 本發明有關於一種稜鏡保護片與一種背光模組總成， 特別是有關於一種用於平面顯示器，諸如液晶顯示器 (Liquid Crystal Display ’以下稱為LCD)或是發光二極體 5 (Light Emitting Diode，以下稱為LED)之背光模組的棱 鏡保護片’以及有關於一種具有該稜鏡保護片的背光模組 總成。 【先前技術】 10 就使用液晶的顯示器而言，必須使用各種型式的光學 片。LCD中，由於其本身的晝素無法發射光，因此，稱為 背光模組(Backlight unit)之光源就必須裝設於LCD面板的 背面。LCD的總亮度取決於背光模組的效能，因此，背光 模組在LCD中扮演很重要的角色。 15 月光模組主要被分類為侧邊入光型與直下型，且其一 般結構如第一圖至第三圖所示。第一圖與第二圖說明側邊 入光型，以及第三圖說明直下型。特別是，第一圖顯示用 於筆記型電腦之標準型式的背光模組。如第一圖與第二圖 所不，側邊入光型包括設置於導光板(2)邊緣部分的燈管 2〇 (6);並且」如第三圖所示，直下型包括設置於擴散板(3，） :方的燈官(6)。侧邊入光型的背光模組，主要用於筆記塑 電腦或是19吋或更小的螢幕、行動裝置、個人數位助理、 $航工具、以及遊戲機等；而直下型背光模組則用於2〇吋 或更小的螢幕與電視機。 6 200900745 更具體而言’側邊入光型背光模組，具有反射片⑴配 置於其取低心，且導光板(2)、燈管⑹、擴散⑽、棱鏡 片（4)、稜鏡)U4’)與保護片（5)依序配置於其上的結構。 ^下型f光模組，具有反射片⑴配置於其最低部分， 且燈管⑹、擴散板(3’）、擴散片（3)、稜鏡片（4)、以及保護 片（5)依序配置於其上的結構。200900745 IX. Description of the Invention: [Technical Field] The present invention relates to a cymbal protection sheet and a backlight module assembly, and more particularly to a flat panel display such as a liquid crystal display (hereinafter referred to as a liquid crystal display) It is an LCD) or a prism protective sheet of a backlight module of a Light Emitting Diode (hereinafter referred to as LED) and a backlight module assembly having the protective sheet. [Prior Art] 10 In the case of a display using a liquid crystal, various types of optical sheets must be used. In an LCD, since its own element cannot emit light, a light source called a backlight unit must be mounted on the back of the LCD panel. The total brightness of the LCD depends on the performance of the backlight module, so the backlight module plays an important role in the LCD. The 15 month light module is mainly classified into a side light-in type and a straight-down type, and its general structure is as shown in the first to third figures. The first and second figures illustrate the side entry type, and the third figure illustrates the direct type. In particular, the first figure shows a standard type of backlight module for a notebook computer. As shown in the first figure and the second figure, the side entrance light type includes the lamp tube 2 (6) disposed at the edge portion of the light guide plate (2); and as shown in the third figure, the direct type includes the diffusion. Board (3,): The party's lamp officer (6). Side-lit backlight module, mainly used for notebook computers or 19-inch or smaller screens, mobile devices, personal digital assistants, $air tools, and game consoles; and direct-lit backlight modules On screens and TVs of 2 inches or smaller. 6 200900745 More specifically, the side-input type backlight module has a reflection sheet (1) disposed at a low center, and the light guide plate (2), the lamp tube (6), the diffusion (10), the prism sheet (4), and the 稜鏡) U4') and the structure in which the protective sheet (5) is sequentially disposed thereon. ^The lower-type optical module has a reflective sheet (1) disposed at the lowest portion thereof, and the lamp tube (6), the diffusion plate (3'), the diffusion sheet (3), the cymbal sheet (4), and the protective sheet (5) are sequentially The structure that is configured on it.
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20 反射片⑴是用於將向下發出的光，最大程度地予以反 射，致使光被導引至向上，以增加燈管的效率。 此種燈管⑹是以冷陰極螢光燈(CCFL)為範例。 側邊人光型肖光模_的導光板(2)，是用以將設置於 二、^刀的燈官⑹所產生的光，均勻地傳輸至背光模組 、王、面。料’導光板(2)是聽將近乎線性光源之螢光 k(6)的光’轉換為表面光源。藉由導光板⑺轉換為表面光 I、的光&在其全表面上展現出不均勻的亮度。也就是說， 虽’>、、k s⑹的線性光源已藉由導光板⑺被轉換為表面光 ，、光的均勻性卻部分地降低，因此不可能得到供背光模 :、且:Γ用的均勻絲。是故，為了達騎需的均勻光源， 之擴散片_用於導光板⑺上。擴散片（3)的功能 ^ 散自導光板(2)㈣出的光。如此—來，當光被擴 i。’月光輪組全表面上之部分不均勻的亮度，可獲得改 :*外1光透過擴散板(3)被擴散時，除了均勻性的提 :之:’光的傳輸方向也被擴散至其前表面，從而增加前 =:度。不使用擴散板，則自導光板⑺所發出的光， 亚不會被傳輸至前表面方向，反而會被傳輸至偏離前 7 200900745 表面方向約60度的方向。因此，擴散片（3)具有擴散各方向 之光的責任，進而增加前表面方向的亮度。如前所述，雖 然使用擴散片是有盈的’但；S'以導光板發出之光總量損失 的觀點來看，則為不佳的。是故，為了達到預期之背光模 5組的功能，光應該盡可能被導引至前表面方向。為達成此 目的’遂將稜鏡片（4)額外地應用於擴散片（3)上。 稜鏡片（4)的功能是用以在前表面方向，聚集來自擴散 片（3)的光（各方向擴散的光）°是故，擴散片（3)上之稜鏡 片（4)的使用，使得前表面亮度增加約L5倍或更多。因此， 1〇幾乎所有LCD用的背光模組，皆採用稜鏡片（4)。由於棱鏡 片（4)具有容易因外在接觸而損壞的結構特性，因此在棱鏡 片（4)上進一步提供保護片，以完成背光模組。 除了在其最低部分使用反射片或反射板(1)之外，直下 型背光模組的結構與側邊入光型背光模組的結構相同。然 15而，不同於側邊入光型背光模組，直下型背光模組包括複 數個長、薄、線形，且互相平行地設置於背光模組整個表 面上的螢光燈管(6)。擴散板(3’)則額外地設置於其上。擴散 板(3，）的功能是用來隱藏線性設置之燈管(6)的線條，並用來 均勻地擴散光。擴散片（3)亦應用於擴散板(3，)上，以補足僅 2〇使用擴散板而不盡理想的擴散功能。在擴散片（3)上使用稜 鏡片（4)與保護片（5)，與在側邊入光型背光模組中相同。 不論稜鏡保護片（5)用於側邊入光型背光模組或直下型 背光模組中’稜鏡保護片（5)都必須具有各種特性，具體而 s ’稜鏡保護片（5)必須展現出高亮度與可擋住稜鏡尖端的 8 200900745 優異能力’並且，由於棱鏡保護片（5)被設置於稜鏡片（4)上 之後，會遭遇到各種加工的過程，諸如印刷、裁切與切削， 因此其亦必須具有優越的加工性。除此之外，當稜鏡保護 片被設置於稜鏡片上之後，棱鏡保護片本身也不能夠損壞 ' 5 棱鏡的表面。 顧慮到這一點，稜鏡保護片具有一種如第四圖及第五 圖所示，由基膜(51，501)以及在基膜二個表面上之保護層 (52, 53, 502, 503)所構成的結構。為求方便，與稜鏡層接觸 之棱鏡保護片的一表面，稱為第一保護層（53, 503)，而稜鏡 1〇保護片的另一表面，則稱為第二保護層（52, 502)。 稜鏡保護片中’保護層是藉由塗覆含有黏合劑與光擴 散粒子之組成物溶液所形成；具體而言，第一保護層（53, 503)需要使用大量的粒子或是大尺寸的粒子，以透過光的擴 散來增加亮度。 15 例如韓國未實審專利公開第2003-0094609號，揭露一 種如弟四圖所示之棱鏡保護片，以及一種如第七圖所示之 . 背光模組總成。具體言之，稜鏡保護片係配置為，使用一 種具有平均粒徑3至30 μιη之光擴散劑(50)散佈於黏合樹脂 中的組成物’將厚度1〇至5〇 μιη且表面粗糙度〇.〇5至5 μηι 20的光擴散層（第二保護層，502)，形成於厚度1〇〇至2〇〇 之基膜(501)的一表面上；並且，使用一種具有平均粒徑工 至5 μιη之光擴散劑(50，)散佈於黏合樹脂中的組成物，將厚 度1至10 μιη且表面粗糙度0.001至1〇 μιη的後側擴散層 (第一保護層，503)，形成於該基膜(5〇1)的另一表面上。 9 200900745 前述基膜的—表面’具有表面粗糙度(Ra)為0 〇5至5.0 pm的光擴散層（第二保護層，5〇2)，將自光源而來的入射 光擴散，以增加亮度、擋住稜鏡尖端，並增進印刷、裁切 與孔加工的易加工性。前述基膜的另一表面，具有表面粗 ' 5糙度為G.0G1至1.0师料稜鏡尖端直接接觸的後側擴散 層（第-保護層’ 503 ) ’因而稜鏡尖端不會有阻礙，且在 f'5 振動的情形下不會損壞稜鏡。 此外，韓國未實審專利公開帛厕侧3921號揭露一 種用以避免稜鏡斷裂的背光模組總成，該背光模組總成内 10部所使用的稜鏡保護片，具有如第五圖所示之么士構，其中， 與稜鏡翻之稜鏡保則的第—賴層(53)係平㈤，以、避免 損壞稜鏡。包括此種保護片之背光模組總成，係圖 所示去。 當與棱鏡接觸之稜鏡保護片的表面 15 坦：，或者是當用於形成第-保護層二; 數旦V於或小於用以形成第二保護層之粒子的 數里或尺柄，即可避免棱鏡尖端的損壞，但是，卻合因 此而造成視角縮減的問題。 曰 更且’由於複數大尺寸粒子設置於表層，因而不符期 望地導致粗劣的外觀。 _不付期 【發明内容】 『所欲解決的問題』 種含有光擴散粒子的 依據本發明之—實施例，使用— 20 200900745 組成物，將保護層形成於基膜的二個表面，當與稜鏡接觸 之保濩層的務度南於表面保護層的霧度時，視角可被加寬。 因此，本發明提供一種稜鏡保護片，其在滿足所需之 釗表面免度時，能夠增加視角並確保外觀均一。 此外，依據本發明另一實施例，當稜鏡片之稜鏡層由 彈性材料卿搞，可有效地避免稜鏡觀稜鏡層。 因此’本發明提供-種背光模組總成，係包含有在滿 足前表面亮度時’能_償視肖並確保外觀均—的棱鏡保 護片。 更且’本發明提供一種背光模組用之光學片總成，係 包含具有稜鏡層之稜制，前述之稜鏡層係能夠有效地避 免來自稜鏡保護片所造成之損壞。 『技術手段』 15 一本發明提供—種與稜鏡層接觸之稜鏡保護片，包含有 基膜’以及使用含有光擴練子與黏合狀組成物，形成 於前述基狀二«面上的倾層；其巾，與魏層接觸 之保4層的霧度局於表面保護層的霧度。 本么月之保5蒦片中，與稜鏡層接觸之保護層可具有川 至70%的霧度；而表面保護層可具有5至6()%的霧度。 1 明之保私巾’與稜鏡層接觸之保護層和表面保 4層的霧度差異可為5至60%。 本發明之保護片可具有15至賺。的霧度。 =外’本發明提供—種包♦有前述稜鏡減片的背光 杈組總成。 20 200900745 此外’本發明提供一種背光模組總成，其包含有至少 一個包括基膜與稜鏡層的稜鏡片，前述稜鏡層係使用〜種 透光的彈性聚合物材料，形成於前述基膜的一表面上，且 前述稜鏡層具有複數個以重複圖形排列的立體結構；前塊 5之背光模組總成尚包含與前述稜鏡層接觸之稜鏡保護片， 其中’前述稜鏡保護片具有基膜與使用一種含有光擴散粒 子與黏合劑之組成物，形成於前述基膜之二個表面上的保 護層’其中，與前述稜鏡層接觸之保護層的霧度，高於表 面保護層的霧度。 10 本發明之背光模組總成中，與稜鏡層接觸之稜鏡保護 片的保護層，可具有10至70%的霧度；而其表面保護層可 具有5至60%的霧度。 本發明之背光模組總成中，稜鏡保護片之與稜鏡層接 觸的保護層和表面保護層之間，可具有5至60%的霧度差 15異。 本發明之背光模組總成中，棱鏡保護片可具有15至 100%的霧度。 本發明之背光模組總成中，稜鏡片的稜鏡層可具有每 平方毫米0.05至100公斤的彈性模數。 20 本發明之背光模組總成中，稜鏡片的稜鏡層可由一種 或是多種選自聚胺基曱酸S旨(polyurethane)、苯乙烯-丁二稀 共聚物（styrene-butadiene copolymers)、聚丙烯酸酯 (poly aery late)、聚曱基丙烯酸酯(p〇iymethacryiate)、聚甲基 丙烯酸甲酯(polymethylmethacrylate)、聚乙烯對笨二甲酸酯 12 200900745 彈性體(polyethylene terephthalate elastomers)、聚異戊二稀 (p〇lyisoprene)以及聚矽氧烷(p〇iysilic〇ne)的聚合物材料所 形成。 ~力效』 依據本發明的一種棱鏡保護片，係具有基瞑，以及使 用含有光擴散粒子與黏合劑之組成物，形成於前述基膜二 個表面上之保護層。當與稜鏡層接觸之保護層，配置為其 霧度高於表面保護層的霧度時，則與稜鏡層接觸之保護層 的光散射性係進一步提昇，進而增進對比與加寬視角。因 10 15 20 而稜鏡保護片可有效地被應用於諸如LCD螢幕、筆記型電 腦、電視機、個人數位助理、文書處理器、行動電話、以 及遊戲機等在維持適當亮度的同時，需要寬視角與高對比 之LCD用的背光模組總成。 /匕外,，、依據本發明的一種背光模組總成，係包括具有 所形成之稜鏡層的稜鏡片，以及與稜鏡層接觸 田：其中，前述稜鏡保護片具有基膜，以及使 】子與黏合劑之組成物，形成於前述基膜二 於：面佴：。當與稜鏡層接觸之保護層的霧度’高 二-牛、二的霧度時’與種鏡接觸之保護層的光散射性 二進而增進對比與加寬視角，並避免損壞稜 二m二種麵持適當亮度的同時’需要寬視 數位助理、文書處,里哭=、/記型電腦、電視機、個人 的背光模組總成。。。、订動㈣、以及遊戲機等LCD用 13 200900745 【圖式簡單說明】 第一圖為剖面圖 背光模組總成； 剖面圖，顯示—種側邊入光型背光模組總成； 乐二圖為剖面圖，顯示_種直下型背光模組總成； 顯示一種習用的稜鏡保護片； 顯示另一種習用的稜鏡保護片； 顯示本發明的一種稜鏡保護片； 顯示一種用於背光模組的習用光學 顯 不 種用於筆記型電腦的標準型 15 20 第四圖為剖面圖 第五圖為剖面圖 弟/、圖為剖面圖 第七圖為剖面圖 >片總成； 第八圖為剖面圖 學片總成； 第九圖為剖面圖 光學片總成； 第十圖為示意圖 壞程度檢測實驗； 第十一圖為掃描式雷早链彡科 組之光學片總成中^顯示用於背光模 情形；以及 由保4片保叙—般稜鏡片受損壞的 第十二圖為掃描式電子顯微鏡影像 .、且之光學㈣成中，由賴 於背光模 的情形。 稜鏡片未受損壞 〈圖中所制之元件符號說明〉 1 2導光板 顯示另—種用於背光模組的習用光 顯示本發明之於背光模組的 顯示由保護片保護之稜鏡層的耐損 !4 200900745 3擴散板 5保護片 3擴散片 4, 4’棱鏡片 6燈管 5〇, 50’光擴散粒子 51，501，5001 基膜 52, 502, 5002第二保護層（上表面）20 The reflection sheet (1) is used to reflect the downwardly emitted light to the maximum extent, so that the light is guided upward to increase the efficiency of the tube. Such a lamp (6) is exemplified by a cold cathode fluorescent lamp (CCFL). The light guide plate (2) of the side human light type mode is used to uniformly transmit the light generated by the lamp holder (6) provided on the second and the second blades to the backlight module, the king, and the surface. The light guide plate (2) is a light source that listens to the fluorescent light k(6) of the nearly linear light source. The light & converted to surface light I by the light guide plate (7) exhibits uneven brightness on its entire surface. That is to say, although the linear light source of '>, k s(6) has been converted into surface light by the light guide plate (7), the uniformity of the light is partially lowered, so that it is impossible to obtain a backlight mode: Evenly silk. Therefore, in order to achieve a uniform light source for the ride, the diffusion sheet _ is used for the light guide plate (7). Function of the diffuser (3) ^ Light from the light guide plate (2) (4). So - come, when the light is expanded. 'The uneven brightness of the whole surface of the moonlight wheel group can be changed: * When the outer 1 light is diffused through the diffusing plate (3), in addition to the uniformity: "the direction of light transmission is also diffused to it. The front surface, thus increasing the front =: degree. Without the use of a diffuser plate, the light emitted from the light guide plate (7) will not be transmitted to the front surface direction, but will be transmitted to a direction deviating from the front surface of the front surface of 200900745 by about 60 degrees. Therefore, the diffusion sheet (3) has a responsibility of diffusing light in all directions, thereby increasing the brightness in the direction of the front surface. As described above, although the use of the diffusion sheet is profitable, 'S;' is not good from the viewpoint of the total amount of light emitted from the light guide plate. Therefore, in order to achieve the desired function of the backlight mode group 5, the light should be guided as far as possible to the front surface direction. For this purpose, the cymbal (4) is additionally applied to the diffusion sheet (3). The function of the cymbal (4) is to collect the light from the diffuser (3) (the light diffused in each direction) in the direction of the front surface. Therefore, the use of the cymbal (4) on the diffuser (3), The front surface brightness is increased by about L5 times or more. Therefore, almost all backlight modules for LCDs use cymbals (4). Since the prism sheet (4) has structural characteristics that are easily damaged by external contact, a protective sheet is further provided on the prism sheet (4) to complete the backlight module. The structure of the direct type backlight module is the same as that of the side entrance type backlight module except that the reflection sheet or the reflection plate (1) is used at the lowest portion thereof. However, unlike the side-in type backlight module, the direct-type backlight module includes a plurality of fluorescent tubes (6) that are long, thin, and linear, and are disposed in parallel with each other on the entire surface of the backlight module. The diffusion plate (3') is additionally provided thereon. The function of the diffuser (3,) is to hide the lines of the linearly arranged tube (6) and to spread the light evenly. The diffusion sheet (3) is also applied to the diffusion plate (3,) to complement the diffusion function of the diffusion plate only to achieve an ideal diffusion function. The use of the prismatic lens (4) and the protective sheet (5) on the diffusion sheet (3) is the same as in the side entrance light-emitting backlight module. Regardless of the 稜鏡 protection sheet (5) used in the side-input type backlight module or the direct-type backlight module, the 稜鏡 protection sheet (5) must have various characteristics, specifically s '稜鏡 protective sheet (5) It must exhibit high brightness and 8 200900745 excellent ability to block the tip of the crucible. And, since the prism protection sheet (5) is placed on the cymbal sheet (4), various processing processes such as printing and cutting are encountered. And cutting, so it must also have superior processability. In addition, the prism protective sheet itself cannot damage the surface of the '5 prism' after the protective sheet is placed on the cymbal. With this in mind, the 稜鏡 protective sheet has a protective film (52, 53, 502, 503) from the base film (51, 501) and on both surfaces of the base film as shown in the fourth and fifth figures. The structure that is formed. For convenience, one surface of the prism protective sheet that is in contact with the enamel layer is referred to as a first protective layer (53, 503), and the other surface of the protective sheet is referred to as a second protective layer (52). , 502). In the protective sheet, the protective layer is formed by coating a composition solution containing a binder and light-diffusing particles; specifically, the first protective layer (53, 503) requires a large amount of particles or a large size. Particles increase the brightness by diffusing light. For example, Korean Unexamined Patent Publication No. 2003-0094609 discloses a prism protective sheet as shown in Fig. 4 and a backlight module assembly as shown in Fig. 7. Specifically, the ruthenium protection sheet is configured to use a composition having a light-diffusing agent (50) having an average particle diameter of 3 to 30 μm dispersed in the adhesive resin to have a thickness of 1 〇 to 5 〇 μηη and surface roughness.光. 〇 5 to 5 μηι 20 light diffusion layer (second protective layer, 502) formed on a surface of the base film (501) having a thickness of 1 〇〇 to 2 ;; and, using an average particle diameter a light diffusing agent (50,) of 5 μιηη dispersed in a binder resin, a backside diffusion layer (first protective layer, 503) having a thickness of 1 to 10 μm and a surface roughness of 0.001 to 1 μm It is formed on the other surface of the base film (5〇1). 9 200900745 The front surface of the base film has a light diffusion layer (second protective layer, 5〇2) having a surface roughness (Ra) of 0 〇5 to 5.0 pm, and diffuses incident light from the light source to increase Brightness, block the tip of the crucible, and improve the ease of processing in printing, cutting and hole processing. The other surface of the foregoing base film has a back side diffusion layer (the first protective layer '503) having a surface roughness '5 roughness of G.0G1 to 1.0. The tip of the material is directly in contact with the tip of the crucible. And in the case of f'5 vibration, it will not damage the flaw. In addition, Korean Unexamined Patent Publication No. 3921 discloses a backlight module assembly for avoiding 稜鏡 breakage, and the 稜鏡 protection sheet used in the interior of the backlight module assembly has the fifth figure. The illustrated sorcerer structure, in which the first layer (53) of the 稜鏡 稜鏡 稜鏡 稜鏡 系 系 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五 五The backlight module assembly including such a protective sheet is shown in the figure. When the surface of the protective sheet is in contact with the prism, the surface 15 of the protective sheet is used, or when it is used to form the first protective layer 2; and the number of deniers V is less than or less than the number of the particles or the handle for forming the second protective layer, Damage to the prism tip can be avoided, but the result is a reduction in viewing angle.曰 More and because the complex large-sized particles are placed on the surface layer, it is undesirably resulting in a poor appearance. _Non-payment period [Summary of the Invention] "Problem to be solved" A method according to the present invention containing light-diffusing particles, using a composition of - 20 200900745, a protective layer is formed on two surfaces of the base film, when When the service of the contact layer is souther than the haze of the surface protective layer, the viewing angle can be widened. Accordingly, the present invention provides a enamel protection sheet which can increase the viewing angle and ensure uniform appearance while satisfying the desired 钊 surface degree of relief. Further, according to another embodiment of the present invention, when the enamel layer of the cymbal is made of an elastic material, the enamel layer can be effectively avoided. Therefore, the present invention provides a backlight module assembly comprising a prism protective sheet which can be used to satisfy the brightness of the front surface and ensure the appearance. Further, the present invention provides an optical sheet assembly for a backlight module comprising a rib layer having a ruthenium layer which can effectively prevent damage caused by the ruthenium protection sheet. 『Technical means』 15 The present invention provides a protective sheet for contact with a ruthenium layer, comprising a base film ′ and a composition comprising a light-expanding component and a binder-like composition formed on the surface of the base layer Pour layer; its towel, contact with the Wei layer to protect the haze of the 4 layers of the haze of the surface protective layer. In the 5th sheet of this month, the protective layer in contact with the tantalum layer may have a haze of 70%, and the surface protective layer may have a haze of 5 to 6 (%). The difference between the haze of the protective layer and the surface layer 4 in contact with the enamel layer may be 5 to 60%. The protective sheet of the present invention can have 15 to earn. Haze. The outer surface of the present invention provides a backlight unit assembly having the aforementioned reduced sheet. 20 200900745 In addition, the present invention provides a backlight module assembly including at least one cymbal including a base film and a ruthenium layer, the ruthenium layer being formed on the base using a light-transmissive elastic polymer material. a surface of the film, and the enamel layer has a plurality of three-dimensional structures arranged in a repeating pattern; the backlight module assembly of the front block 5 further comprises a 稜鏡 protection sheet in contact with the 稜鏡 layer, wherein the 稜鏡The protective sheet has a base film and a protective layer formed on the two surfaces of the base film using a composition containing the light-diffusing particles and a binder, wherein the haze of the protective layer in contact with the ruthenium layer is higher than The haze of the surface protective layer. In the backlight module assembly of the present invention, the protective layer of the protective sheet in contact with the tantalum layer may have a haze of 10 to 70%; and the surface protective layer may have a haze of 5 to 60%. In the backlight module assembly of the present invention, the protective layer and the surface protective layer of the 稜鏡 protective sheet which is in contact with the ruthenium layer may have a haze difference of 5 to 60%. In the backlight module assembly of the present invention, the prism protective sheet may have a haze of 15 to 100%. In the backlight module assembly of the present invention, the enamel layer of the cymbal may have a modulus of elasticity of 0.05 to 100 kg per square millimeter. In the backlight module assembly of the present invention, the enamel layer of the cymbal may be one or more selected from the group consisting of polyurethane, styrene-butadiene copolymers, Poly aer late, p〇iymethacryiate, polymethylmethacrylate, polyethylene terephthalate 12 200900745 polyethylene terephthalate elastomers, polyiso Formed from a polymer material of p〇lyisoprene and polyfluorene oxide (p〇iysilic〇ne). ~Strength Effect A prism protective sheet according to the present invention has a base layer and a protective layer formed on both surfaces of the base film by using a composition containing light-diffusing particles and a binder. When the protective layer in contact with the tantalum layer is configured such that the haze is higher than the haze of the surface protective layer, the light scattering property of the protective layer in contact with the tantalum layer is further enhanced, thereby enhancing contrast and widening the viewing angle. Because of 10 15 20, the protective film can be effectively applied to applications such as LCD screens, notebook computers, televisions, personal digital assistants, word processors, mobile phones, and game consoles while maintaining proper brightness. A backlight module assembly for viewing angles and high contrast LCDs. In addition, a backlight module assembly according to the present invention includes a cymbal having a ruthenium layer formed, and a field in contact with the ruthenium layer: wherein the ruthenium protection sheet has a base film, and The composition of the binder and the binder is formed on the base film II: facet:. When the haze of the protective layer in contact with the ruthenium layer is 'high two-bovine, two haze', the light scattering property of the protective layer in contact with the seed mirror further enhances the contrast and widens the viewing angle, and avoids damage to the ridge two m two While holding the appropriate brightness, the 'requires a wide-view digital assistant, a clerical office, a crying, a/recording computer, a television, and a personal backlight module assembly. . . , (4), and LCD for game consoles, etc. 13 200900745 [Simple description of the diagram] The first picture is the sectional backlight module assembly; the sectional view shows a kind of side-input type backlight module assembly; The figure is a cross-sectional view showing a type of direct type backlight module assembly; showing a conventional 稜鏡 protection sheet; showing another conventional 稜鏡 protection sheet; showing a 稜鏡 protection sheet of the present invention; The conventional optical of the module is not used for the standard type of notebook computer. 15 The fourth picture is the cross-sectional view, the fifth picture is the cross-sectional view, the picture is the cross-sectional view, the seventh picture is the sectional view > the piece assembly; Figure 8 is a sectional view film assembly; the ninth picture is a sectional view optical sheet assembly; the tenth picture is a schematic diagram of the bad degree detection experiment; and the eleventh picture is the scanning type of the early chain of the optical group assembly ^ shows the case for the backlight mode; and the twelfth picture which is damaged by the protection of the four pieces of the film is the scanning electron microscope image, and the optical (four) is formed by the case of the backlight mode. The cymbal is not damaged (the description of the component symbols made in the figure) 1 2 The light guide plate shows another conventional light display for the backlight module. The display of the backlight module of the present invention is protected by a protective sheet. Resistance to damage! 4 200900745 3 diffuser plate 5 protective sheet 3 diffuser 4, 4' prism sheet 6 tube 5 〇, 50' light diffusing particles 51, 501,5001 base film 52, 502, 5002 second protective layer (upper surface )
10 15 20 53,5〇3，测第-保縣（與稜鏡接觸之層， 1004彈性稜鏡片 又 【實施方式】 之 本發明之一實施例，係提供—種用於組成背光模组 總成的棱鏡保護片。 视 稜鏡片基本上是用於增加背光模組的前表面亮度，並 二與麵均一之外觀，而在稜鏡片上設置 二、/、、。#由與稜鏡接觸之保護Μ層的光散射 程度所增加的視角，係高於葬由保 所增㈣㈣。W猎由保私表層之光散射程度 〃依據本《明刚述之實施例，該稜鏡保護片具有一基 膜以及使用=有光擴散粒子與黏合劑之組成物溶液，形 成，該基膜之二，表面上的保護層；其中，與稜鏡接觸之 保4層的霧度，⑦於表面保護層的霧度。 當與稜鏡接觸之保護層哺度，高於表面賴層的霧 度時，對比增加且視角加寬。 另-方面，當與稜鏡接觸之保護層的霧度，低於表面 15 200900745 保護層的霧度時，對比相對地降低且視角縮減。 霧度可隨著表面結構的粗糙程度予以調整。依此觀 點’實施例係為使用具有大或小尺寸的粒子，或是使用大 罝的粒子，以增加自表面突出的粒子數量，進而調整霧度 5的方法。然而，調整霧度的方法並不受限於前述者。 如第六圖所示之稜鏡保護片，具有大尺寸的粒子(5〇) 係用於基膜（5001)的下表面，亦即與稜鏡接觸之保護層 (5003)，而具有小尺寸的粒子(5〇，)係用於該基膜(5〇〇1)的上 表面，亦即表面保護層（5〇〇2)，進而在上表面與下表面之間 10產生霧度差異。 在此情況下，與稜鏡接觸之該保護層（5003)使穿過稜鏡 的光被擴散，而該表面保護層（5〇〇2)使此種被擴散的光，在 預疋角度範圍内透射，致使對比增加且視角加寬。 然而與棱鏡接觸之該保護層（5003)的霧度，低於該 15表面保護層的霧度時，穿過稜鏡的光會在預定角度範圍内 透射，而此種透射光會藉由該表面保護層（5002)被擴散，致 使對比降低且視角縮減。 依據本發明前述之實施例’與稜鏡接觸之該保護層 (5003)的霧度可為1〇至7〇%，而該表面保護層（5〇〇2)的霧 20 度可為5至60%。 與稜鏡接觸之該保護層（5003)的霧度，應高於該表面保 濩層（5002)的霧度。倘若不是如此，當與稜鏡接觸之該保護 層（5003)的務度過低時，視角與對比可能會降低。相反地， 當與稜鏡接觸之該保護層（5003)的霧度過高時，亮度可能會 16 200900745 減低。 此外，該表面保護層（5002)的霧度，應低於與稜鏡接觸 之保護層（5003)的霧度。然而，當該表面保護層（5〇〇2)的霧 度過低時，由於表面反射，因而可能發生視覺缺陷。相反 5地，當該表面保護層（5〇〇2)的霧度過高時，亮度可能會減低。 因此，與稜鏡接觸之該保護層（5003)的霧度，被控制為 高於該表面保護層（5〇〇2)的霧度，使該保護層（5〇〇3)與該表 面保護層（5002)之間的霧度差異在5至6〇%間。該棱鏡保護 片（5)的總霧度則在15至1〇〇〇/0的範圍内。 〇 本發明之稜鏡保護片中，當與稜鏡接觸之該保護層 (5003)的霧度增加時’可能會導致由於前述保護層與棱鏡片 尖端摩擦，因而產生磨損稜鏡片尖端的問題；然而，由於 此問題可藉由適當地改變用於稜鏡片的材料來加以預防， 因此並不嚴重。10 15 20 53,5〇3, Measured-Baoxian (layer in contact with enamel, 1004 elastic cymbal and [embodiment] one embodiment of the present invention is provided for the total composition of the backlight module The prismatic protective sheet is basically used to increase the brightness of the front surface of the backlight module, and the appearance of the second surface is uniform, and the second, /, , and # are disposed on the cymbal sheet. The angle of view of the degree of light scattering that protects the enamel layer is higher than that of the burial (4) (4). The degree of light scattering by the surface of the smuggling layer is based on the embodiment of the Ming Dynasty, which has one a base film and a solution of a composition having a light-diffusing particle and a binder, forming a second protective film on the surface of the base film; wherein, the contact layer is in contact with the crucible, and the haze of the layer 4 is 7 on the surface protective layer. Haze. When the protective layer in contact with the crucible is higher than the haze of the surface layer, the contrast increases and the viewing angle is widened. On the other hand, when the haze in contact with the crucible is lower than the haze, Surface 15 200900745 The haze of the protective layer, the contrast is relatively reduced and the viewing angle The haze can be adjusted according to the roughness of the surface structure. From this point of view, the embodiment uses particles having a large or small size, or particles using large enamel to increase the number of particles protruding from the surface, and further The method of adjusting the haze 5. However, the method of adjusting the haze is not limited to the foregoing. As shown in the sixth figure, the protective sheet having a large size (5〇) is used for the base film (5001). The lower surface, that is, the protective layer (5003) in contact with the crucible, and the particles having a small size (5〇) are applied to the upper surface of the base film (5〇〇1), that is, the surface protective layer (5〇〇2), and further a haze difference is generated between the upper surface and the lower surface 10. In this case, the protective layer (5003) in contact with the crucible causes the light passing through the crucible to be diffused, and The surface protective layer (5〇〇2) transmits such diffused light in a range of pre-twist angles, resulting in an increase in contrast and a wide viewing angle. However, the haze of the protective layer (5003) in contact with the prism is lower than When the haze of the 15 surface protective layer is passed, the light passing through the crucible is transmitted within a predetermined angle range. The transmitted light is diffused by the surface protective layer (5002), resulting in a decrease in contrast and a reduced viewing angle. The protective layer (5003) in contact with the crucible according to the foregoing embodiment of the present invention may have a haze of 1 〇 to 7〇%, and the surface protective layer (5〇〇2) may have a haze of 5 to 60%. The haze of the protective layer (5003) in contact with the crucible should be higher than the surface protection The haze of the layer (5002). If this is not the case, the viewing angle and contrast may be lowered when the protective layer (5003) in contact with the crucible is too low. Conversely, when the protective layer is in contact with the crucible When the haze of (5003) is too high, the brightness may be reduced by 16 200900745. In addition, the haze of the surface protective layer (5002) should be lower than the haze of the protective layer (5003) in contact with the crucible. However, when the haze of the surface protective layer (5〇〇2) is too low, visual defects may occur due to surface reflection. On the contrary, when the haze of the surface protective layer (5〇〇2) is too high, the brightness may be lowered. Therefore, the haze of the protective layer (5003) in contact with the crucible is controlled to be higher than the haze of the surface protective layer (5〇〇2), so that the protective layer (5〇〇3) and the surface protection The difference in haze between layers (5002) is between 5 and 6%. The total haze of the prism protective sheet (5) is in the range of 15 to 1 〇〇〇 / 0. In the protective sheet of the present invention, when the haze of the protective layer (5003) in contact with the crucible is increased, 'there may be a problem of abrasion of the tip of the crucible due to friction between the protective layer and the tip of the prism sheet; However, since this problem can be prevented by appropriately changing the material for the sepals, it is not serious.
20 舉例來說，韓國未實審專利公開第2〇〇5_〇〇99288號揭 露-種稜鏡片’其稜鏡層係由透明且具彈性的聚合物材料 所組成’以避免稜鏡表_損壞。#使用此種稜鏡片時， u吏用大尺寸粒子來增加與稜鏡接觸之該保護層（遍 的霧度，可避免棱鏡尖端的損壞。 本發明之棱鏡保護片中，該基膜包含有非常透明之聚 脂、聚輯脂、聚⑽酸樹脂、或是聚碳酸嘛旨。 用非常透明，且具有良好的機械強度與高加工性 現出產自背光模組之光與熱_久性。 特別疋’可使用聚乙烯對笨二曱酸酯獏。 17 200900745 設置於該基膜之二個表面上之該等保護層（5〇〇2,5〇〇3) (第六圖所示）’係使用含有光擴散粒子與黏合劑之組成物 溶液所形成者，並且，前述之光擴散粒子包括有機或無機 粒子。無機粒子的範例包括二氧化矽、氧化鍅、碳酸弼、 5硫酸鋇與二氧化肽；以及，有機粒子的範例包括自單體所 獲得之均聚物或共聚物，諸如苯乙烯、三聚氛胺甲搭 (melamine formaldehyde)、笨代三聚氰胺甲醛 (benzoguanamine formaldehyde)、苯并三聚氰胺密胺甲醛 (benzoguanamine melamine formaldehyde)、丙稀、乙稀、聚 10石夕氧炫(siHc〇ne)、胺基甲酸乙酯(urethane)與甲基丙烯酸甲 酯(methy lmethacry late)，前述各項係可以單分散型式或是多 分散型式使用之，而於本發明中並無特定限制。 黏合劑的範例包括熱塑性或是紫外線可硬化樹脂，諸 如聚乙烯樹脂(polyvinyl resin)、丙稀酸樹脂(acryiic resin)、 15 聚酯樹脂(Polyester resin)、苯乙烯樹脂(styrene resin)、醇酸 樹脂(alkyd resin)、胺基樹脂(amino resin)、聚胺基甲酸酯樹 脂(polyurethane resin)與環氧樹脂(epoxy resin)。 將含有光擴散粒子與黏合劑之該組成物溶液，塗覆於 該基膜的二個表面上，之後乾燥，以製得稜鏡保護片。 -0 塗覆含有光擴散粒子與黏合劑之該組成物溶液的過程 並沒有特別限制，只要是本技術領域所熟知者即可。而依 據基膜的材料與形狀，係可進行風刀製程（air knife Process)、凹板製程(gravure process)、計量桿製程(Meyer bar process) ' 反I昆製程(reverse r〇u process)或是喷灑製程(spray 18 200900745 process) 〇 如第九圖所示，本發明之另一實施例係提供一種背光 模組總成’該背光模組總成中，包含有稜鏡片與棱鏡保護 片，其中，該稜鏡片具有用以聚集向上、向下、向左與向 5右方向之光的稜鏡層，以增加亮度；而該稜鏡保護片是用 以保護該棱鏡層與加寬視角。 在棱鏡保護片中’當與稜鏡接觸之該保護層（5〇〇3)的霧 度增加時，由於與稜鏡片尖端的摩擦，因此可能會造成上 方保護層磨損棱鏡片尖端的問題。為了有效地克服此種問 10題，因而提供一種具有彈性稜鏡層之稜鏡片的背光模組總 成。 請參閱第九圖，彈性稜鏡片（10〇4)包括一基膜，以及一 形成於該基膜之一表面上的稜鏡層，其中該棱鏡層是由彈 性♦合物材料所‘成’並且，較佳為具有彈性模數0 05至 15 100 kg/mm2的聚合物材料。 當該稜鏡層之彈性模數位於前述範圍内時，此材料的 撓性與剛性較適當，因而可避免損壞山形的稜鏡。 稜鏡片中，用於稜鏡層之該聚合物材料並沒有特別限 制，只要是透明的彈性材料且符合前述的彈性模數者即 20可。该&合物材料的範例包括聚胺基曱酸酯 (polyurethane)、苯乙烯-丁二烯共聚物（吻咖如触㈣ copolymers)、聚丙烯酸酯（polyacryiate)、聚甲基丙稀酸醋 (polymethacrylate)、聚甲基丙烯酸曱酯 (polymethylmethacrylate)、聚乙烯對苯二甲酸酯彈性體 19 200900745 (polyethylene terephthalate elastomers)、聚異戊二稀 (polyisoprene)、或是聚石夕氧院(p〇lySilic〇ne)。 该棱鏡層包括複數個以重複圖形排列的立體結構，且 該等立體結構之剖面為三角形或是多角形，並且較佳為具 • 5有等腰直角三角形形狀。 稜鏡片中’該基膜可與該稜鏡保護片之基膜相同或是 不同’且該稜鏡片之基膜的範例包括聚乙稀對苯二曱酸西旨 (polyethylene terephthalate)、聚萘二甲酸乙二醋 (polyethylene naphthalate)、聚碳酸酯(p〇iycarb〇nate)、聚苯 ίο 乙烯(polystyrene)、聚甲基丙烯酸酯(p〇iymethacryiate)、聚 甲基丙烯酸甲S旨（polymethylmethacrylate)、聚丙烯酸酯 (polyacrylate)、聚亞醯胺（polyimide)、或是聚醯胺 (polyamide)。該基膜更包括光擴散粒子，進而展現出粗糙 結構。 15 除了該稜鏡片與該稜鏡保護片之外，本發明之該背光 模組總成可更進一步包括典型用於LCD的其它光學片。例 如，按照第一圖至第三圖所示之背光模組的類型，係可使 用導光板、反射片以及擴散片。然而，在本發明中並未特 別限制。 20 藉由下列實施例可更加瞭解本發明，然而該等實施例 僅用以敘述本發明而非用以限制本發明。 在下列的範例與比較範例中，稜鏡片是由以下所列出 之材料製得。 <材料> 20 200900745 基膜.聚乙烯對苯二甲酸酯膜（PETfilm，可隆工 厚度188 μιη)。 呆’ 光擴散粒子：聚甲基丙烯酸甲gt (P〇1ymethylmethacryIate，單分散型與多分散型粒子）。曰 黏合樹脂：聚酯或是丙烯酸樹脂（可隆工業）。 <方法> ^ 馮裂造出稜鏡保護片 一，ΰ 1兀擴餃粒子與黏合劑的έ日 成物溶液，透過凹板塗佈咖㈣塗覆於基: 表面上，之後在1()〇°c下乾燥3分鐘 、 10 層（乾燥後之厚度為5至3〇μηι);其後，叫議:護 一保護声（盘奸户妓棘土 相同的方法將 範例1至8以及比較範例1至6:稜 使用上述之材料財㈣備各魏保^、 = 表面保護層以及與‘接觸 本Ni^ ’ D h汁（^猶如，型號麵捕0，日 本ΝΦΡ〇η Denshoku公司）來測量霧度。 15 200900745 【表1】 霧度(％) 興稜鏡層接觸 之保護層 表面保護 層 與稜鏡接觸之保護層 -表面保護層 稜鏡保護片 1 10 5 5 15 2 20 10 1 10 30 3 30 1 15 — 15 45 Η 4 40 20 20 60 例 5 50 1 25 25 75 6 60 30 1 30 90 7 8 Η 5 3 13 8 70 40 30 110 比 1 5 10 -5 15 2 10 20 -10 30 較 3 15 Γ 30 -15 45 祀 4 「20 40 -20 60 例 5 25 Γ 50 -25 75 6 30 60 -30 90 範例9至16以及比較範例7至12 為了評估由前述方法所製備之各稜鏡保護片，在亮 度、視角與對比方面的使用效能，遂以下列方式裝配背光 5模組總成。 <背光模組總成> 背光模組：24吋直下型背光模組 總成.擴散板+擴散片+稜鏡片+保護片+液晶顯示模組 (Liquid Crystal Module, LCM) 0 棱鏡片方面’係使用一種具有由彈性模數0.1 kg/mm2 的聚合物材料所製成之稜鏡層的稜鏡片。 使用BM-7輝度計（iuminancecai〇rimeter，東京光學） 置測受度、視角以及前表面對比。測量結果顯示於下表2。 22 200900745 【表2】20 For example, Korean Unexamined Patent Publication No. 2〇〇5_〇〇99288 discloses that the 稜鏡 layer is composed of a transparent and elastic polymer material to avoid 稜鏡表_ damage. # When using such a cymbal, u 吏 use large-sized particles to increase the protective layer in contact with 稜鏡 (the haze of the ridge can avoid damage of the prism tip. In the prism protective sheet of the present invention, the base film contains Very transparent polyester, polyurethane, poly(10) acid resin, or polycarbonate. It is very transparent, has good mechanical strength and high processability. It produces light and heat from the backlight module. In particular, it is possible to use polyethylene to bismuth decanoate. 17 200900745 These protective layers (5〇〇2, 5〇〇3) are provided on the two surfaces of the base film (sixth figure ' is formed by using a composition solution containing light-diffusing particles and a binder, and the aforementioned light-diffusing particles include organic or inorganic particles. Examples of the inorganic particles include cerium oxide, cerium oxide, cerium carbonate, and cerium sulfate. And oxidized peptides; and examples of organic particles include homopolymers or copolymers obtained from monomers, such as styrene, melamine formaldehyde, benzoguanamine formaldehyde, benzene Triad Benzylamine melamine formaldehyde, propylene, ethylene, sulphate, urethane and methy lmethacry late, Each of the series may be used in a monodisperse type or a polydisperse type, and is not particularly limited in the present invention. Examples of the binder include thermoplastic or ultraviolet curable resins such as polyvinyl resin and acrylic acid. Acryiic resin, 15 polyester resin, styrene resin, alkyd resin, amino resin, polyurethane resin And an epoxy resin. The composition solution containing the light-diffusing particles and the binder is applied to both surfaces of the base film, followed by drying to obtain a ruthenium protection sheet. The process of the composition solution containing the light-diffusing particles and the binder is not particularly limited as long as it is well known in the art, and depending on the material and shape of the base film, an air knife process can be performed. Process), gravure process, Meyer bar process 'reverse r〇u process or spray process (spray 18 200900745 process), as shown in the ninth figure, Another embodiment of the present invention provides a backlight module assembly. The backlight module assembly includes a cymbal and a prism protection sheet, wherein the cymbal sheet has a shape for gathering upward, downward, and leftward. The enamel layer of light in the right direction of 5 is added to increase the brightness; and the enamel protection sheet is used to protect the prism layer and widen the viewing angle. In the prism protective sheet, when the haze of the protective layer (5〇〇3) in contact with the crucible is increased, the upper protective layer may wear the tip of the prism sheet due to friction with the tip end of the vane. In order to effectively overcome such a problem, a backlight module assembly having a flexible enamel enamel is provided. Referring to FIG. 9 , the elastic cymbal (10〇4) includes a base film and a ruthenium layer formed on one surface of the base film, wherein the prism layer is formed of an elastic compound material. Also, a polymer material having an elastic modulus of from 0 05 to 15 100 kg/mm 2 is preferred. When the elastic modulus of the enamel layer is within the foregoing range, the flexibility and rigidity of the material are appropriate, thereby avoiding damage to the mountain shape. In the crotch sheet, the polymer material for the enamel layer is not particularly limited as long as it is a transparent elastic material and conforms to the aforementioned elastic modulus. Examples of the & composite material include polyurethane, styrene-butadiene copolymer (cosac), polyacryiate, polymethyl acrylate vinegar (polymethacrylate), polymethylmethacrylate, polyethylene terephthalate elastomer 19 200900745 (polyethylene terephthalate elastomers), polyisoprene (polyisoprene), or polystones (p 〇lySilic〇ne). The prism layer comprises a plurality of three-dimensional structures arranged in a repeating pattern, and the three-dimensional structure has a triangular or polygonal cross section, and preferably has an isosceles right triangle shape. In the ruthenium, the base film may be the same as or different from the base film of the ruthenium protection sheet, and examples of the base film of the ruthenium sheet include polyethylene terephthalate and polynaphthalene. Polyethylene naphthalate, polycarbonate (p〇iycarb〇nate), polystyrene, poly(meth) methacrylate (polymethylmethacrylate), polymethylmethacrylate Polyacrylate, polyimide, or polyamide. The base film further includes light diffusing particles to exhibit a rough structure. In addition to the cymbal sheet and the cymbal protection sheet, the backlight module assembly of the present invention may further include other optical sheets typically used for LCDs. For example, according to the types of backlight modules shown in the first to third figures, a light guide plate, a reflection sheet, and a diffusion sheet can be used. However, it is not particularly limited in the present invention. The invention is further understood by the following examples, which are not to be construed as limiting the invention. In the following examples and comparative examples, the cymbals are made from the materials listed below. <Material> 20 200900745 Base film. Polyethylene terephthalate film (PET film, 188 μm thick). Dyed light diffusing particles: polymethyl methacrylate gt (P〇1ymethylmethacry Iate, monodisperse and polydisperse particles).黏 Adhesive resin: polyester or acrylic resin (Kelon Industry). <Method> ^ The rupture of the 稜鏡 稜鏡 稜鏡 稜鏡 稜鏡 ΰ ΰ ΰ 兀 兀 兀 兀 兀 兀 兀 兀 兀 粒子 粒子 粒子 粒子 粒子 粒子 粒子 粒子 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯() Dry at 3 °C for 3 minutes, 10 layers (5 to 3 〇μηι after drying); And Comparative Examples 1 to 6: The use of the above materials (4) for each Wei Bao ^, = surface protective layer and with 'contact Ni ^ ' D h juice (^ as if, model face capture 0, Japan ΝΦΡ〇η Denshoku company To measure the haze. 15 200900745 [Table 1] Haze (%) Protective layer of the protective layer of the protective layer in contact with the enamel layer - Protective layer of the surface layer 稜鏡 Protective sheet 1 10 5 5 15 2 20 10 1 10 30 3 30 1 15 — 15 45 Η 4 40 20 20 60 Example 5 50 1 25 25 75 6 60 30 1 30 90 7 8 Η 5 3 13 8 70 40 30 110 Ratio 1 5 10 -5 15 2 10 20 -10 30 compared to 3 15 Γ 30 -15 45 祀 4 "20 40 -20 60 cases 5 25 Γ 50 -25 75 6 30 60 -30 90 Examples 9 to 16 and Comparative Examples 7 to 12 The protective film prepared by the method has the effects of brightness, viewing angle and contrast, and the backlight 5 module assembly is assembled in the following manner. <Backlight module assembly> Backlight module: 24 inches straight down Type backlight module assembly. Diffusion plate + diffuser + + piece + protective sheet + liquid crystal display module (Liquid Crystal Module, LCM) 0 The prism sheet is made of a polymer with a modulus of elasticity of 0.1 kg/mm2. The enamel layer of the material. The BM-7 luminance meter (iuminancecai〇rimeter, Tokyo Optics) was used to measure the acceptance, viewing angle and front surface contrast. The measurement results are shown in Table 2. 22 200900745 [Table 2 】
23 200900745 測量結 仏地降低’視角則會增加，而對比則不會大幅地改變。 參考範例 ίο 以相同的方式量測亮度、視角與前表面對比 果顯示於下表3。23 200900745 Measuring knots ’ ’ 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角 视角Reference example ίο Measuring brightness, viewing angle and front surface in the same way are shown in Table 3 below.
μ I由表3可明顯得知，這些結果與範例9至16以及比較 $例7至12相同。當棱鏡層的彈性模數增加時，亮度會稍 時 為了 k查使用一般稜鏡片取代彈性稜鏡片作為棱鏡片 兄層的損壞程度，遂如第十圖所示，將棱鏡保護片 (由fe例3製成）置放於稜鏡片上，在稜鏡保護片荷重2〇〇 克的同時’稜鏡保護片係以每分鐘5⑻㈣的速度向右移 動，之後使用掃描式電子顯微鏡觀察稜鏡保護片下方的稜 鏡片’所得之結果如第十一圖所示。 並且’使用前述範例之彈性棱鏡片進行相同的實驗， 所得之結果如第十二圖所示。 24 15 200900745 第十一圖的掃描式電子顯微鏡影像，顯示出棱鏡的尖 端損壞得很嚴重，而第十二圖的掃描式電子顯微鏡影像， 則顯示出稜鏡的尖端並未損壞。由此結果可知，在避免來 自與稜鏡接觸之稜鏡保護片所造成的損壞方面，用於使用 • 5 彈性稜鏡片之背光模組的光學片總成的實例表現較佳。 25 200900745 【圖式簡單說明】 第一圖為剖面圖，顯示一種用於筆記型電腦的標準型 背光模組總成； 第二圖為剖面圖，顯示一種側邊入光型背光模組總成； 5 第三圖為剖面圖，顯示一種直下型背光模組總成； 第四圖為剖面圖，顯示一種習用的稜鏡保護片； 第五圖為剖面圖，顯示另一種習用的稜鏡保護片； 第六圖為剖面圖，顯示本發明的一種稜鏡保護片； 第七圖為剖面圖，顯示一種用於背光模組的習用光學 10片總成， 第八圖為剖面圖，顯示另一種用於背光模組的習用光 學片總成； 第九圖為剖面圖，顯示本發明之一種用於背光模組的 光學片總成； 15 苐十圖為不意圖’顯不由保護片保護之棱鏡層的而于才貝 壞程度檢測貫驗， 第十一圖為掃描式電子顯微鏡影像，顯示用於背光模 組之光學片總成中，由保護片保護之一般稜鏡片受損壞的 情形；以及 20 第十二圖為掃描式電子顯微鏡影像，顯示用於背光模 組之光學片總成中，由保護片保護之彈性棱鏡片未受損壞 的情形。 26 200900745 2導光板 3’擴散板 5保護片 【主要元件符號說明】 1反射片 3擴散片 4,4’棱鏡片 5 6燈管 50, 50’光擴散粒子 51, 501，5001 基膜 52, 502, 5002第二保護層（上表面） 53,503,5003第一保護層（與稜鏡接觸的層，下表面） ίο 1004彈性棱鏡片 27μ I is apparent from Table 3, and these results are the same as Examples 9 to 16 and Comparative Examples 7 to 12. When the elastic modulus of the prism layer is increased, the brightness will be slightly used for the purpose of checking the degree of damage of the elastic sheet as the prism sheet layer, as shown in the tenth figure, the prism protection sheet (by the fe case) 3) placed on the cymbal sheet, while the 稜鏡 protection sheet load is 2 gram, while the 稜鏡 protection sheet is moved to the right at a speed of 5 (8) (four) per minute, and then the 稜鏡 protective sheet is observed using a scanning electron microscope. The result of the bottom bracts' is shown in Figure 11. And the same experiment was carried out using the elastic prism sheet of the foregoing example, and the results obtained are shown in Fig. 12. 24 15 200900745 The scanning electron microscope image of the eleventh figure shows that the tip end of the prism is seriously damaged, while the scanning electron microscope image of the twelfth figure shows that the tip of the crucible is not damaged. From this result, it is understood that the example of the optical sheet assembly for the backlight module using the 5 elastic film is better in terms of avoiding the damage caused by the protective sheet contact with the crucible. 25 200900745 [Simple description of the diagram] The first picture is a sectional view showing a standard backlight module assembly for a notebook computer; the second picture is a sectional view showing a side-lighting type backlight module assembly 5 The third figure is a sectional view showing a direct type backlight module assembly; the fourth figure is a sectional view showing a conventional 稜鏡 protection sheet; and the fifth figure is a sectional view showing another conventional 稜鏡 protection 6 is a cross-sectional view showing a 稜鏡 protective sheet of the present invention; and a seventh sectional view showing a conventional optical 10-piece assembly for a backlight module, and the eighth drawing is a cross-sectional view showing another A conventional optical sheet assembly for a backlight module; ninth is a cross-sectional view showing an optical sheet assembly for a backlight module of the present invention; 15 苐10 is not intended to be 'protected by a protective sheet The prism layer is detected by the degree of damage, and the eleventh figure is a scanning electron microscope image showing that the general cymbal plate protected by the protection sheet is damaged in the optical sheet assembly for the backlight module; And 20 Twelve picture shows a scanning electron microscope image, an optical sheet assembly for a backlight display mode of the group in the case of the prism sheet resilient protection by a protective sheet undamaged. 26 200900745 2 light guide plate 3' diffuser plate 5 protective sheet [main component symbol description] 1 reflective sheet 3 diffusing sheet 4, 4' prism sheet 5 6 tube 50, 50' light diffusing particles 51, 501,5001 base film 52, 502, 5002 second protective layer (upper surface) 53, 503, 5003 first protective layer (layer in contact with tantalum, lower surface) ίο 1004 elastic prism sheet 27