201024810 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係有關於一種複合式光學膜及使用該複合式 [0002] • * 光學膜之背光模組（一）’尤其是指一種可取代現有技術 C 中之上、下擴散膜及增亮膜，且具有良光效果且組 裝時表面不易損傷之複合式光學膜，以及藉由使用該複 合式光學膜以達降低製造成本之效益的背光模組者。 【先前技術】 按，背光模組依其光源的設置可分為侧光式與直下 式。就譚側光式背光模組之構造係包括由上而下依序疊 設之一第一擴散片、一增亮膜、一第二擴散片、一導光 板、反射片以及在導光板侧邊設置之一光源。至於該直 下式背祕模組之構造係包括由上而下依序疊設之一第一 擴散片、一增亮膜、一第二擴散片、一設在第二擴散片 下方之光源及一反射片。 [0003] 以該侧光式背光模組而言’其之光源的光線由導光 ❹ 板之側邊投射而入並'由其出光面導出，由於導光板上投 射出的光源各會產生光線朝遠離入射光源的一邊逐漸變 暗，以及對應入射光源處投射而出之光線較亮，致造成 明、暗、明、暗交錯的現象，同時更會產生疊紋（m〇ire) ，因此必需在導光板上設置第二擴散片，以將透過導光 板的光線作散射處理’但是這樣的光線又會太暗，故業 者會在第二擴散片上設置增亮膜，以增加光線亮& 而設置該增亮膜後疊紋會再次顯現，所以在該增亮膜上 會再設置一第一擴散片’以消除增亮膜和導光板間相互 097151800 表單編號A0101 第4頁/共27頁 0972084560-0 201024810 干擾所產生的疊紋，此外，設置第一擴散片的另一目的 ，係為保護增亮膜的表面，使其在組裝時能避免刮傷， 防止因刮傷而影響其之輝度；只是該第一擴散片的設置 將影響該背光模組的輝度（亮度），而且又增加該背光模 組的製造成本。 【發明内容】 [0004] 今，發明人即是鑒於上述現有之複合式光學膜在實 際實施上仍具有多處之缺失，於是乃一本孜孜不倦之精 神，並藉由其豐富之專業知識及多年之實務經驗所輔佐 ，而加以改善，並據此創設出本發明。 [0005] 本發明之主要目的係在提供一種可取代現有技術中 之上、下擴散膜及增亮膜，且具有良好聚光效果且組裝 時表面不易損傷之複合式光學膜，以及使用該複合式光 學膜以達降低製造成本之效益的背光模組。 [〇〇〇6] 為達上述目的，本發明提供一種複合卷光學膜，其 係包括一可將光線擴散之擴散基底膜層，以及設在該擴 ® 散基底膜層上且有聚光效果之數個連續的三角形柱狀聚 光體單元，該三角形柱狀聚光體單元的頂點處或谷底區 設數多規則或不規則排列之微凸出體或微凹入孔。 [0007] 該複合式光學膜進一步令該數個連續的三角形柱狀 聚光體單元各呈S形設置。 [〇〇〇8] 該複合式光學膜亦可進一步令相鄰的三角形柱狀聚 光體單元間設立之高度不同，且高、低三角形柱狀聚光 體單元間彼此間隔設置。 097151800 表單編號A0101 第5頁/共27頁 0972084560-0 201024810 [0009] 該複合式光學膜亦可再進一步令各三角形柱狀聚光 體單元之高度具高低變化，使各三角形柱狀聚光體單元 由側視圖觀之時呈高低起伏狀。 [0010] 該複合式光學膜再進一步於兩兩相連的三角形柱狀 聚光體單元間的谷底區設微凸出體或微凹入孔。 [0011] 一種使用上述複合式光學膜之背光模組，該背光模 組由上而下依序設一複合式光學膜及一面光源；其中， 該複合式光學膜，係包括數個連續的三角形柱狀聚光體 〇 單元，該三角形柱狀聚光體單元的的頂點處或谷底區設 數多規則或不規則排列之微凸出體或微凹入孔。 【實施方式】 [0012] 為令本發明所運用之技術内容、發明目的及其達成 之功效有更完整且清楚的揭露，茲於下詳細說明之，並 請一併參閱所揭之圖式及圖號： [0013] 請參閱第一圖所示，其係本發明之背光模組的結構 ^ 圖。該背光模組（1)包括由上而下依序層疊設置之一 參 複合式光學膜（1 1 )、一面光源（1 2)及一反射片 (13)。 [0014] 請參閱第二、三圖所示，其係該複合式光學膜（1 1 )之結構示意圖；該複合式光學膜（1 1 )係採用紫 外線式硬化樹脂，該複合式光學膜（1 1 )包括一可將 光線擴散之擴散基底膜層（1 1 1 )，以及設在該擴散 基底膜層（1 1 1 )上且有聚光效果之數個連續的三角 形柱狀聚光體單元（1 1 2 )，該三角形柱狀聚光體單 097151800 表單編號A0101 第6頁/共27頁 201024810 元（112)的斷面係呈三角形，於其頂點處設數多規 則或不規則排列之微凸出體（113)，或如第四、五 圖所示於三角形柱狀聚光體單元（i i 2)的頂點處設 數多規則或不規則排列的微凹入孔（1 1 4)。其中該 微凸出體（1 1 3)或微凹入孔（11 4)的曲率半徑 介於10〜l〇〇"m，且微凸出體（1 1 3)或微凹 入孔（1 1 4)分佈在該三角形柱狀聚光體單元（工工 2 )之斜面處的區域係佔該斜面長度的1 〇〜 H [0015] 再者，定義其t 一三角形柱狀聚光體單元（丄工2 )中心至另一三角形柱狀聚光體單元（1 1 2 )中心之 水平距離為P，相鄰之二三角形柱狀聚光體單元（工工 2)間之谷區夾角為0 ;令2〇em<p<i5〇ym ，6 0 ° < 0 < 1 2 0。》此外，其中一三角形柱狀聚光 體單元（1 1 2)的頂點至底邊之垂直距離為η 1，而 與該其中一三角形柱狀聚光體單元（1 1 2)相鄰的另 一三角形枉狀聚光體單元（1 1 2)的頂點至底邊之垂 ❹ 直距離為Η 2，且其中一三角形柱狀聚光體單元（1工 2)的頂點至谷區夾角0之頂點的垂直距離為hi，另 一三角形柱狀聚光體單元（112)的頂點至谷區夾角 0之頂點的垂直距離為h2;令H1/H2介於0 . 5 〜2之間、hl/h2介於〇 . 5〜2之間。 再參第六圖，該複合式光學膜（1 1)進一步令該 數個連續的三角形柱狀聚光體單元（112)均呈自俯 視觀之如S形設置並列。第七圖所示者係令相鄰的三角 形柱狀聚光體單元（1 1 2)間其之Η 1妾Η 2，使其 097151800 表單編號Α0101 第 7頁/共27頁 0972084560-0 201024810 [0017] ❹ [0018] [0019] [0020] [0021] 097151800 一三角形柱狀聚光體單元（112)與另一三角形柱狀 聚光體單元（1 1 2)間之尚度具高低落差，其比例h 1/Η 1介於〇 . 2〜1之間。第八圖所示者係令各 三角形柱狀聚光體單元（112)之高度具高低變化， 使各三角形柱狀聚光體單元（1 1 2 )由侧視圖觀之 時呈高低起伏狀。 請參第九、十圖，其係在兩兩相鄰之三角形柱狀聚 光體單元（1 1 2)間所形成之谷區的表面上設數多微 凸出體（1 1 5)成微凹入孔（1 1 6 第十一、十二圖所示者，係於該複合式光學膜（1 1 )内添加不同折射率之微粒子（1 1 7) ’且微粒子 之粒徑介於1〜5〇#m° 經由以上的實施說明’可知本發明具有如下所列之 優點： 1. 本發明之複合式光學膜在第一表面上設有微結構，該 微結構的設計除可提升複合式“光學膜的聚光效果，使投 射而出之光線不會產生亮點外’並可達在組裝的過程當 中較不容易受損之效能。 2. 本發明之背光模組因係採用本發明之複合式光學膜， 而該複合式光學膜由出光面投射而出之光線相當均勻， 無亮點；因此該單一複合式光學膜及可取代現有技術中 之上、下擴鼓片及增亮膜，而可降低製造成本。 綜上所述，本發明實施例確能達到所預期之使用功 效，又其所揭露之具體構造，不僅未曾見諸於同類產品 表單編號A0101 第8頁/共27頁 0972084560-0 [0022] 201024810 [0023] [0024] [0025] 參 [0026] [0027] [0028]201024810 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a composite optical film and a backlight module (1) using the composite [0002] * * optical film, especially The composite optical film which can replace the upper and lower diffusion films and the brightness enhancement film in the prior art C, has a good light effect and is not easily damaged when assembled, and the utility model can reduce the manufacturing cost by using the composite optical film. Backlight module. [Prior Art] Press, the backlight module can be divided into side light type and direct type according to the setting of its light source. The structure of the tan-side backlight module includes a first diffusion sheet, a brightness enhancement film, a second diffusion sheet, a light guide plate, a reflection sheet, and a side of the light guide plate, which are sequentially stacked from top to bottom. Set a light source. The structure of the direct type back module includes a first diffusion sheet, a brightness enhancement film, a second diffusion sheet, a light source disposed under the second diffusion sheet, and a light source stacked one above another. A reflective sheet. [0003] In the edge-lit backlight module, the light of the light source is projected from the side of the light guide plate and is derived from the light-emitting surface, and the light source projected on the light guide plate generates light. It gradually dims away from the side away from the incident light source, and the light projected from the incident light source is brighter, resulting in bright, dark, bright and dark staggered phenomena, and at the same time, it also produces moiré (m〇ire), so it is necessary A second diffusion sheet is disposed on the light guide plate to scatter the light transmitted through the light guide plate. However, such light is too dark, so the operator will provide a brightness enhancement film on the second diffusion sheet to increase the brightness of the light. After the brightness enhancement film is set, the moiré will appear again, so a first diffusion sheet will be disposed on the brightness enhancement film to eliminate the mutual brightness between the brightness enhancement film and the light guide plate. 097151800 Form No. A0101 Page 4 / Total 27 pages 0972084560 -0 201024810 Interfering with the generated moiré. In addition, the other purpose of setting the first diffusion sheet is to protect the surface of the brightness enhancement film so that it can avoid scratches during assembly and prevent the brightness from being affected by scratches. Just that A diffusion sheet arranged to affect the luminance of the backlight module (brightness), and also increases the manufacturing cost of the backlight module group. SUMMARY OF THE INVENTION [0004] Now, the inventor is in view of the above-mentioned existing composite optical film still has many defects in practical implementation, so it is a tireless spirit, and with its rich professional knowledge and many years The practical experience assisted and improved, and the present invention was created accordingly. [0005] The main object of the present invention is to provide a composite optical film which can replace the upper and lower diffusion films and brightness enhancement films in the prior art, has a good concentrating effect, and is not easily damaged when assembled, and uses the composite. Optical film for backlight modules that reduce the cost of manufacturing. [6] In order to achieve the above object, the present invention provides a composite roll optical film comprising a diffusion base film layer capable of diffusing light, and being disposed on the expanded base film layer and having a light collecting effect. A plurality of consecutive triangular columnar concentrating elements, the apex or valley portion of the triangular columnar concentrating unit is provided with a plurality of regularly or irregularly arranged micro-protrusions or micro-recessed holes. The composite optical film further allows the plurality of continuous triangular columnar concentrating units to be disposed in an S shape. [〇〇〇8] The composite optical film may further have different heights between adjacent triangular columnar concentrating units, and the high and low triangular columnar concentrating units are spaced apart from each other. 097151800 Form No. A0101 Page 5 of 27 0972084560-0 201024810 [0009] The composite optical film can further change the height of each triangular columnar concentrating unit to make each triangular columnar concentrator The unit is undulating when viewed from a side view. [0010] The composite optical film is further provided with micro-protrusions or micro-recessed holes in the valley region between the two column-connected triangular columnar concentrating units. [0011] A backlight module using the above composite optical film, the backlight module is sequentially provided with a composite optical film and a light source from top to bottom; wherein the composite optical film includes several consecutive triangles A columnar concentrating unit, the apex or valley portion of the triangular columnar concentrating unit is provided with a plurality of regularly or irregularly arranged micro-protrusions or micro-recessed holes. [Embodiment] [0012] For a more complete and clear disclosure of the technical content, the object of the invention and the effects thereof achieved by the present invention, the following is a detailed description, and please refer to the drawings and Figure No.: [0013] Please refer to the first figure, which is a structural diagram of the backlight module of the present invention. The backlight module (1) includes a composite optical film (1 1 ), a light source (12) and a reflective sheet (13) which are sequentially stacked from top to bottom. [0014] Please refer to the second and third figures, which are schematic structural diagrams of the composite optical film (1 1 ); the composite optical film (1 1 ) is an ultraviolet type hardening resin, and the composite optical film ( 1 1 ) comprising a diffusion base film layer (1 1 1 ) capable of diffusing light, and a plurality of continuous triangular columnar concentrators disposed on the diffusion base film layer (1 1 1 ) and having a condensing effect Unit (1 1 2 ), the triangular columnar concentrator single 097151800 Form No. A0101 Page 6 / Total 27 pages 201024810 Yuan (112) has a triangular section with a number of regular or irregular arrangements at its apex a micro-convex body (113), or as shown in the fourth and fifth figures, a plurality of regularly or irregularly arranged micro-recessed holes at the apex of the triangular columnar concentrating unit (ii 2) (1 1 4 ). Wherein the micro-protrusion (1 1 3) or the micro-recessed hole (11 4) has a radius of curvature of 10 to 1 〇〇 " m, and the micro-protrusion (1 1 3) or micro-recessed hole ( 1 1 4) The area distributed at the slope of the triangular columnar concentrating unit (worker 2) occupies 1 〇 H of the length of the slope [0015] Furthermore, the t-triangle columnar concentrator is defined The horizontal distance from the center of the unit (Complete 2) to the center of another triangular columnar concentrating unit (1 1 2) is P, and the angle between the valleys of the adjacent two triangular columnar concentrating elements (Worker 2) 0; let 2〇em<p<i5〇ym , 6 0 ° < 0 < 1 2 0. In addition, one of the triangular columnar concentrating elements (1 1 2) has a vertical distance from the vertex to the bottom side of η 1, and is adjacent to the one of the triangular columnar concentrating elements (1 1 2) The apex of the triangular dome-shaped concentrating unit (1 1 2) to the bottom edge is a straight distance of Η 2, and the apex of one of the triangular columnar concentrating elements (1 gong 2) is at an angle of 0 to the valley The vertical distance of the apex is hi, the vertical distance of the apex of the other triangular columnar concentrating unit (112) to the apex of the valley 0 is h2; let H1/H2 be between 0.5 and 2, hl/ H2 is between 〇. 5~2. Referring again to the sixth figure, the composite optical film (11) further causes the plurality of consecutive triangular columnar concentrating units (112) to be juxtaposed from the top view as an S-shaped arrangement. The figure shown in the seventh figure is such that the adjacent triangular columnar concentrating unit (1 1 2) is between 1 and 2, so that it is 097151800. The form number is Α0101. Page 7/27 pages 9772084560-0 201024810 [ [0019] [0020] [0091] 097151800 A triangular columnar concentrating unit (112) and another triangular columnar concentrating unit (1 1 2) have a high degree of difference, The ratio h 1 / Η 1 is between 〇. 2~1. The figure shown in the eighth figure is such that the height of each of the triangular columnar concentrating elements (112) has a height change, so that each of the triangular columnar concentrating elements (1 1 2) has a high and low undulation when viewed from a side view. Please refer to the ninth and tenth figures, which are provided with a plurality of micro-protrusions (1 1 5) on the surface of the valley region formed between two adjacent triangular columnar concentrating units (1 1 2). Micro-recessed holes (1 1 6 shown in the eleventh and twelfth drawings, in which the microparticles of different refractive indices (1 1 7) are added to the composite optical film (1 1 ) and the particle size of the microparticles is between 1~5〇#m° According to the above description, the present invention has the following advantages: 1. The composite optical film of the present invention is provided with a microstructure on the first surface, and the design of the microstructure can be improved. The composite "light film concentrating effect makes the projected light not produce bright spots" and can achieve the performance that is less likely to be damaged during the assembly process. 2. The backlight module of the present invention uses the present The composite optical film of the invention, wherein the composite optical film is relatively uniform in light emitted from the light-emitting surface, and has no bright spots; therefore, the single composite optical film can replace the upper and lower diffusing drums and brighten the prior art. Membrane, which can reduce the manufacturing cost. In summary, the embodiment of the present invention can achieve the The use of the period, and the specific structure disclosed, not only have not been seen in the similar product form number A0101, page 8 / total 27 pages 0972084560-0 [0022] 201024810 [0023] [0024] [0025] [0026] [0028] [0028]
[0029] [0030] [0031] [0032] 097151800 中，亦未曾公開於申請前，誠已完全符合專利法之規定 與要求，爰依法提出發明專利之申請，懇請惠予審查， 並賜准專利，則實感德便。 【圖式簡單說明】 第一圖：本發明之背光模組結構圖 第二圖：本發明之複合式光學膜的其一較佳實施例局部 立體放大圖 第三圖：本發明之複合式光學膜的其一較佳實施例局部 前視放大圖 第四圖：本發明之複合式光學膜的其二較佳實施例局部 立體放大圖 第五圖：本發明之複合式光學膜的其二較佳實施例局 部前視放大圖 第六圖：本發明之複合式光學膜的其三_佳實施例局 部俯視放大圖 第七圖：本發明之複合式光學膜的其四較佳實施例局 部前視放大圖 第八圖：本發明之複合式光學膜的其五較佳實施例局 部前視放大圖 第九圖：本發明之複合式光學膜的其六較佳實施例局 部前視放大圖 第十圖：本發明之複合式光學膜的其七較佳實施例局 部前視放大圖 表單編號A0101 第9頁/共27頁 0972084560-0 201024810 [0033] 第十一圖：本發明之複合式光學膜的其八較佳實施例 局部前視放大圖 [0034] 第十二圖：本發明之複合式光學膜的其九較佳實施例 局部前視放.大圖 [0035] 【主要元件符號說明】 (1) 背光模組 （11) 複合式光學膜 [0036] (1 1 1 )擴散基底膜層 [0037] Φ [0038] (1 1 2)三角形柱狀聚光體單元 (113)微凸出體 （114)微凹入孔 [0039] (115)微凸出體 （116)微凹入孔 [0040] (117)微粒子 （12) 面光源 [0041] (13) 反射片 Φ 097151800 表單編號A0101 第10頁/共27頁 0972084560-0[0030] [0032] [0032] 097151800, has not been disclosed before the application, Cheng has fully complied with the provisions and requirements of the Patent Law, 提出 filed an application for invention patents, please for review, and grant patents , it is really sensible. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view of a backlight module of the present invention. FIG. 2 is a partially enlarged perspective view of a preferred embodiment of the composite optical film of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A front view of a preferred embodiment of a composite optical film of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Partially Front View Magnified FIG. 6 is a third preferred embodiment of the composite optical film of the present invention. FIG. 7 is a partial plan view showing a fourth preferred embodiment of the composite optical film of the present invention. FIG. 8 is a perspective view showing a fifth embodiment of the composite optical film of the present invention. FIG. 9 is a partially enlarged front view of the composite optical film of the present invention. Figure 10: Seven preferred embodiments of the composite optical film of the present invention. Partial front view enlarged view Form No. A0101 Page 9 / Total 27 pages 0972084560-0 201024810 [0033] Figure 11: Composite optical of the present invention Eight of the membranes are better Example front view enlarged view [0034] Fig. 12: The nine preferred embodiment of the composite optical film of the present invention is partially front view. Larger image [0035] [Main component symbol description] (1) Backlight module (11) Composite optical film [0036] (1 1 1 ) diffusion base film layer [0037] (1 1 2) triangular columnar concentrating unit (113) micro convex body (114) dimple Inlet hole [0039] (115) Micro-convex body (116) Micro-recessed hole [0040] (117) Microparticle (12) Surface light source [0041] (13) Reflector Φ 097151800 Form No. A0101 Page 10 of 27 Page 0972084560-0