M305348 八、新型說明： 【新型所屬之技術領域】 本創作提供一種混合型微結構之光學膜與背光模組， 特指一種應用於背光模組及液晶顯示器之光學膜，使液晶 顯示器可增加亮度與均勻度之效果者。 【先前技術】 近年來，液晶顯示器裝置已被廣泛地應用，如個人電 鲁腦、液晶電視、手機、個人數位助理等電子產品。液晶顯 示器包含背光模組與液晶面板，其中背光模組置於液晶面 板下方，其包含光源、導光板、反射片、擴散片、增亮片 的光學元件。 請參考第十四圖，本圖表示習知背光模組（A)的構造。 . 導光板（A1)係為一個透明的壓克力平板，在導光板（A1)側 邊（All)接受外界發出的光線（B)，射入導光板（A1)内部之 光線（B)因受到全反射原理而侷限在導光板（A1)内來回傳 _遞。擴散點（A2)設置於導光板（A1)底面（A12)，擴散點（A2) 係粗糙的導光板（A1)表面或不規則形狀，如圓形、橢圓、 角錐或金字塔等其它形狀，係功能為破壞導光板（A1)之平 滑表面，改變光線（B)的傳遞行為，進行反射或穿透導光板 (A1)的行為。光源（A3)位於導光板（A1)侧方，提供光線（B) 進入導光板（A1)。反射片（A4)位於導光板（A1)之正下方， 將從導光板（A1)底面（A12)漏出的光線（B)反射回導光板 (A1)，回收光線（B)並增加發光效率。擴散片（A5)位在導光 M305348 板（A1)之上方，其功能係使導光板出光面射出的光線〇)方 向均勻化，即各方向上等亮度化，或者消除擴散點產生特 殊的發光分佈。增亮膜（A6)放置在擴散片（A5)之上方，其 功能係將從擴散片（A5)所發出的光線（B)集中往背光模組 (A)之正向上，射入上方之液晶面板（c)。 上述之擴散片（A5)及增亮膜（A6)即為習知之光學膜。 請參閱附件4,係習知光學膜之示意圖，該光學膜之頂 角係90度’兩片之紋路相互交叉9〇度，其發出之光學強 度如附件5所示，實線表示垂直方向角度上的強度變化， 此垂直方向上的角度係指在Y—Z平面上的方向與z軸夾的 角度（可參考附件1之座標），虛線表示水平方向角度上的 強度變化，此水平方向上的角度係指在χ—ζ平面上的方向 與Z轴夾的角度（可參考附件1之座標）。由附件5看出在 垂直與水平方向上的半高強度的位置在21度至23度角一 帶。最高強度為〇.241cd。 其他如美國專利US6825984號、美國專利 2006/0087743號、美國專利US695546〇號、中華民國專利 M289203、M28G484及申請案號85雨415等，亦揭露相 技術。 【新型内容】 與均==知增亮片及擴散片，以解決其亮度 :第 本創作係在提供一 "一表面’第-表面 種混合型微結構之光學膜，包括有 ’相對於上述第-表面；複數侧邊 6 M305348 /面面與第二表面，該第一表面或/與第二 ίί: 數弧形微結構與角形微結構之混合型微- 冓〃中弧形微結構之截面端部形狀 之截面端部形狀為角形。 料微結構 上述之弧形微結構為弧形長 在與弧形長條體延伸方向相垂 =::r:—，在與角形長條體延伸= 重直之截面上’角形長條體之截面端部形狀為角形。 評ίΐί第一表面或第二表面中之弧形長條體與角形長 條體係4數依序交互排列。 長 w上述之第—表面或第二表面中之弧形長條體與角來县 條體係不等數交互排列。 、ν長 向係：:===與角形長條想之延㈣ 條趙之延伸方向亦平行於上㈣長㈣與角形長 述之第一表面之弧形長條體與角形長條體之延伸方 二*、’订=第一方向’第二表面之弧形長條體與角形長 條：：延伸方向係平行於一第二方向 二方向係非平行。 I、弟 上述之第一方向與第二方向係相亩。 單元=述之弧形微結構為紙形單元趙，角形微結構為角形 單元 M305348 述?第一表面或第二表面中包括弧形單元體與角形 早70體之混合型微結構係呈蜂巢式分佈。 述之第—表面或第二表面中包括弧形單元體與角形 早疋體之混合型微結構係呈不規則式分佈。 上述之第—表面或第二表面中之弧形單元體係集中於 同列，角形單元體則集中於另列。M305348 VIII. New Description: [New Technology Field] This product provides a hybrid micro-structured optical film and backlight module, especially an optical film applied to a backlight module and a liquid crystal display, so that the liquid crystal display can increase brightness. With the effect of uniformity. [Prior Art] In recent years, liquid crystal display devices have been widely used, such as personal electronic brains, liquid crystal televisions, mobile phones, personal digital assistants and the like. The liquid crystal display comprises a backlight module and a liquid crystal panel, wherein the backlight module is disposed under the liquid crystal panel, and comprises an optical component of a light source, a light guide plate, a reflection sheet, a diffusion sheet and a brightness enhancement sheet. Please refer to the fourteenth figure, which shows the construction of the conventional backlight module (A). The light guide plate (A1) is a transparent acrylic plate, and the light (B) emitted from the outside is received on the side (All) of the light guide plate (A1), and the light (B) incident on the inside of the light guide plate (A1) is caused by Subject to the principle of total reflection, it is limited to passing back and forth in the light guide plate (A1). The diffusion point (A2) is disposed on the bottom surface (A12) of the light guide plate (A1), and the diffusion point (A2) is a rough surface of the light guide plate (A1) or an irregular shape such as a circle, an ellipse, a pyramid or a pyramid. The function is to destroy the smooth surface of the light guide plate (A1), change the transmission behavior of the light (B), and perform the behavior of reflecting or penetrating the light guide plate (A1). The light source (A3) is located on the side of the light guide plate (A1) to provide light (B) into the light guide plate (A1). The reflection sheet (A4) is located directly under the light guide plate (A1), and reflects the light (B) leaking from the bottom surface (A12) of the light guide plate (A1) back to the light guide plate (A1), recovers the light (B) and increases the luminous efficiency. The diffusion sheet (A5) is located above the light guide M305348 plate (A1), and its function is to uniformize the direction of the light emitted from the light exit surface of the light guide plate, that is, the brightness is increased in all directions, or the diffusion point is eliminated to generate a special light. distributed. The brightness enhancement film (A6) is placed above the diffusion sheet (A5), and its function is to concentrate the light (B) emitted from the diffusion sheet (A5) toward the forward direction of the backlight module (A) and into the liquid crystal above. Panel (c). The above-mentioned diffusion sheet (A5) and brightness enhancement film (A6) are conventional optical films. Please refer to Appendix 4 for a schematic diagram of a conventional optical film. The apex angle of the optical film is 90 degrees. The two lines intersect each other at 9 degrees. The optical intensity of the optical film is shown in Annex 5. The solid line indicates the vertical angle. The change in intensity, the angle in the vertical direction refers to the angle between the direction on the Y-Z plane and the z-axis (refer to the coordinates of Annex 1), and the broken line indicates the intensity change in the horizontal direction. The angle refers to the angle of the direction on the χ-ζ plane with the Z-axis (refer to the coordinates of Annex 1). It is seen from Annex 5 that the position of the semi-high intensity in the vertical and horizontal directions is in the range of 21 to 23 degrees. The highest intensity is 241.241cd. Others such as U.S. Patent No. 6, 582, 984, U.S. Patent No. 2006/0087743, U.S. Patent No. 695,546, U.S. Patent No. M289203, M28G484, and Application No. 85 Rain 415, etc., also disclose phase techniques. [New content] and both == knowing sequins and diffusers to solve their brightness: the first creation is to provide a "one surface' surface-surface hybrid micro-structured optical film, including 'relative to the above a first surface; a plurality of sides 6 M305348 / face and a second surface, the first surface or / and the second ίί: a plurality of curved microstructures and angular microstructures of the mixed micro- 冓〃 curved curved microstructure The cross-sectional end shape of the cross-sectional end shape is an angular shape. The microstructure of the microstructure has an arc-shaped microstructure that is curved in the direction of the direction in which the arc-shaped elongated body extends =::r:—, and the section of the angular elongated body on the section extending from the angular elongated body = straight The end shape is an angular shape. The curved elongate body and the angular strip system in the first surface or the second surface are sequentially arranged in sequence. The arc-shaped strips in the first-surface or second surface of the above-mentioned length w are alternately arranged with the angling system. , ν long direction system::=== and angular strips want to extend (4) Zhao's extension direction is also parallel to the upper (four) long (four) and the angular surface of the first surface of the curved long strip and angular strip The curved strips and the angular strips of the second surface of the extension square**, 'booking=first direction': the extending direction is parallel to a second direction and the two directions are non-parallel. I, brother The first direction and the second direction are the same. Unit = The arc-shaped microstructure is a paper-shaped unit Zhao, and the angular microstructure is an angular unit M305348. The first surface or the second surface includes a curved unit body and an angular shape of the early 70-body hybrid microstructure. distributed. The mixed microstructures including the curved unit body and the angular early body in the first surface or the second surface are irregularly distributed. The arc-shaped unit systems in the above-mentioned first surface or second surface are concentrated in the same column, and the angular unit bodies are concentrated in another column.
-上述之第一表面或第二表面中之弧形單元體與角形單 元體係等數依序交互排置於同列。 /上述之排列在同一方向上之弧形單元體與角形單元體 係不等數交互排置於同列。 上it之弧形微結構為弧形長條體與弧形單元體或/與 角形單元體之混合型態。 〃 ^ 上述之角形微結構為角形長條體與角形單元體或/與 弧形單元體之混合型態。 一種包括有混合型微結構之光學膜之背光模組。 • 一種包括有混合型微結構之光學膜之液晶顯示器。 本創作具有之優點： 1·本創作之光學膜係以取代習知之增亮片及擴散片， 而具有擴散與集光之功能。 2·係可使用於背光模組，而使液晶顯示器可增加亮度 與均句度之效果者。 【實施方式】 首先’如第一、二圖所示，本創作包括有：第一表面 (1)，第二表面（2)，相對於上述第一表面;複數側邊 8 M305348 _ 。同臨接於第一表面（1)與第二表面（2);該第一表面（i) 或/與第二表面（2)上包括有複數弧形微結構（4)與角形微 結構（5)之混合型微結構，其中弧形微結構（4)之截面端部 形狀為弧形；角形微結構（5)之截面端部形狀為角形。 上述之弧形微結構（4)及角形微結構（5)為本創作之微 結構實例，而由二者衍生出各種型式之態樣。 凊參閱第三圖，本實施例之弧形微結構為弧形長條體 修（41)，角形微結構則為角形長條體（51);在與弧形長條體 j41)延伸方向相垂直之截面上，弧形長條體（41)之截面端 部形狀為弧形，在與角形長條體（51)延伸方向相垂直之截 面上，角形長條體（51)之截面端部形狀為角形；其第一表 面（1)及第二表面（2)皆可覆有弧形長條體（41)及角形長條 體（51)，而第三、四圖中係以第一表面（1)具有弧形長條體 (41)及角形長條體（51)代表。 第三圖中之實施例，其第一表面（1)或第二表面（2)中 _之弧形長條體（41)與角形長條體（51)係等數依序交互排列 〇 第四圖中之實施例，其第一表面（1)或第二表面（2)中 之弧形長條體（41)與角形長條體（51)係不等數交互排列。 請參閱第五圖，本實施例之第一表面（1)之弧形長條體 (41)與角形長條體（51)之延伸方向係平行於一第一方向（ 空心箭頭方向），第二表面（2)之弧形長條體（41)與角形長 條體（51)之延伸方向亦平行於上述第一方向（空心箭頭方 - 向）〇 M305348 =閱第六圖’本實施例之第一表面⑴之弧形 (41)與角形長條體（51)之延伸方向係平行於一第一 空心箭頭方向），第二表面⑵之弧形長條體⑹盘㈣長 條體⑸)之延伸方向係平行於一第二方向(實心箭頭方向) ’其中第-方向(空心箭頭方向)與第二方向(實心箭頭方向 )係非平行’时之非平行方向細兩者互呈垂直方向表示 令 η ⑩ 凊參閱第七圖’係為另一型態之實施例，其弧形微結 構為弧形單元體(41Α)，角形微結構為角形單元體(51Α); 中第表面（1Α)及第二表面（2Α)皆可覆有弧形單元體 (41Α)及角形單元體（51Α),而第七圖中係以第一表面（ια) 具有弧形單元體（41Α)及角形單元體（51Α)代表。且第七圖 中之狐形單元體（41Α)及角形單元體（5ια)係以矩陣方式分 佈，而其分佈方式可另為蜂巢式分佈或不規則分佈。 如第八圖所示，第一表面（1Α)或第二表面（2Α)中之弧 φ形單το體（41Α)係集中於同列，角形單元體（51Α)則集中於 另列。 如第九圖所示，第一表面（1Α)或第二表面（2Α)中之弧 开ν單元體（41Α)與角形單元體（51Α)係等數依序交互排置於 同列。 如第十圖所示，第一表面（1Α)或第二表面（2Α)中排列 在同一方向上之弧形單元體（41Α)與角形單元體（51Α)係不 等數父互排置於同列。 、 如第十一圖所示，第一表面（1Β)或第二表面（2Β)之弧 M305348 形微結構為弧形長條體（41B)與弧形單元體（42B)之混合型 態；其亦可為弧形長條體（41B)與角形單元體（52B)之混合 型態（此部份不予圖式），甚至是弧形長條體（41B)與弧形 單元體（42B)及角形單元體（52B)之混合型態（此部份亦不 予圖式）。 如第十二圖所示，第一表面（1B)或第二表面（2B)之角 形微結構為角形長條體（51B)與角形單元體（52B)之混合型 態；其亦可為角形長條體（51B)與弧形單元體（42B)之混合 *型態（此部份不予圖式），相同的，亦可為角形長條體（51B) 與角形單元體（52B)及弧形單元體（42B)之混合型態（此部 份亦不予圖式）。 如第十三圖所示，本創作背光模組示意圖，係包括一 種如上所述之各類型混合型微結構之光學膜（6)之背光模 組。 本創作係包括一種如上所述之各類型混合型微結構之 •光學膜之液晶顯示器。 又，附件1係表示光學膜之光學強度測量示意圖，兩片 光學膜之紋路相互交叉90度，其中下片光學膜之紋路平行Y 轴，上光學膜之紋路平行X轴。在下光學膜下方設置一等向 性光源（未在附件1示意），等向性表示在各方向的光線數是 等量。在上光學膜上方設置一檢測面（未在附件1示意），該 檢測面分析從光學膜射出的光線在各方向上的計量。而附 件2為本創作光學膜之示意圖，兩片光學膜之紋路相互交叉 90度，其發出之光學強度如附件3所示，在垂直方向上半高 11 M305348- The arcuate unit body in the first surface or the second surface is sequentially arranged in the same row as the angular unit system. / The arc-shaped unit body and the angular unit system arranged in the same direction are arranged in the same row in an unequal number. The arc-shaped microstructure of the upper is a mixed form of the curved elongated body and the curved unit body or/and the angular unit body. 〃 ^ The above-mentioned angular microstructure is a mixed form of an angular elongated body and an angular unit body or/and an arc-shaped unit body. A backlight module comprising an optical film having a hybrid microstructure. • A liquid crystal display comprising an optical film with a hybrid microstructure. The advantages of this creation: 1. The optical film of this creation replaces the conventional brightening and diffusing film, and has the functions of diffusion and light collecting. 2· can be used in the backlight module, and the liquid crystal display can increase the brightness and the effect of the uniformity. [Embodiment] First, as shown in the first and second figures, the present invention includes: a first surface (1), a second surface (2) opposite to the first surface, and a plurality of sides 8 M305348 _. Simultaneously adjacent to the first surface (1) and the second surface (2); the first surface (i) or / and the second surface (2) include a plurality of curved microstructures (4) and angular microstructures ( 5) A hybrid microstructure in which the end portion of the curved microstructure (4) has an arc shape; and the end portion of the angular microstructure (5) has an angular shape. The arc-shaped microstructures (4) and the angular microstructures (5) described above are examples of the microstructures of the creation, and various types of patterns are derived from the two. Referring to the third figure, the curved microstructure of the embodiment is an arc-shaped strip body repair (41), and the angular microstructure is an angular strip body (51); in the direction of extension with the curved strip body j41) In the vertical section, the end portion of the curved elongated body (41) has an arc shape, and the end portion of the angular elongated body (51) is perpendicular to the extending direction of the angular elongated body (51). The shape is an angular shape; the first surface (1) and the second surface (2) may be covered with a curved elongated body (41) and an angular elongated body (51), and the first and fourth figures are first. The surface (1) has a curved elongated body (41) and an angular elongated body (51). In the embodiment in the third figure, the arcuate elongated body (41) of the first surface (1) or the second surface (2) is alternately arranged with the angular elongated body (51). In the embodiment of the four figures, the curved elongated body (41) in the first surface (1) or the second surface (2) and the angular elongated body (51) are unequally arranged. Referring to the fifth figure, the arc-shaped elongated body (41) of the first surface (1) of the embodiment and the extending direction of the angular elongated body (51) are parallel to a first direction (the direction of the hollow arrow), The extending direction of the curved elongated body (41) and the angular elongated body (51) of the two surfaces (2) is also parallel to the first direction (open arrow direction) 〇 M305348 = see the sixth figure 'this embodiment The curved shape (41) of the first surface (1) and the extending direction of the angular elongated body (51) are parallel to a direction of a first hollow arrow), and the curved elongated body of the second surface (2) (6) is a long body (4) The direction of extension is parallel to a second direction (solid arrow direction) where the non-parallel direction of the first direction (the direction of the hollow arrow) and the second direction (the direction of the solid arrow) are non-parallel The direction indicates that η 10 凊 see the seventh figure 'is another embodiment of the shape, the curved microstructure is an arc unit (41 Α), the angular microstructure is an angular unit (51 Α); the middle surface ( 1Α) and the second surface (2Α) can be covered with a curved unit body (41Α) and an angular unit body (51Α), and in the seventh figure A first surface (ια) having an arcuate unit body (of 41 [alpha) and the angular unit body (51Α) behalf. Further, the fox-shaped unit body (41 Α) and the angular unit body (5 ια) in the seventh figure are distributed in a matrix manner, and the distribution manner thereof may be a honeycomb distribution or an irregular distribution. As shown in the eighth figure, the arc φ-shaped single τ ob body (41 Α) in the first surface (1 Α) or the second surface (2 Α) is concentrated in the same column, and the angular unit body (51 Α) is concentrated in another column. As shown in the ninth figure, the arc-opening unit body (41Α) and the angular unit body (51Α) in the first surface (1Α) or the second surface (2Α) are sequentially arranged in the same row. As shown in the tenth figure, the arcuate unit body (41Α) and the angular unit body (51Α) arranged in the same direction in the first surface (1Α) or the second surface (2Α) are placed in an unequal number of fathers. Same column. As shown in the eleventh figure, the arc of the first surface (1Β) or the second surface (2Β) M305348 is a mixed structure of the curved elongated body (41B) and the curved unit body (42B); It may also be a mixed form of the curved elongated body (41B) and the angular unit body (52B) (this part is not illustrated), or even an arcuate elongated body (41B) and a curved unit body (42B). And the mixed type of the angular unit body (52B) (this part is also not shown). As shown in the twelfth figure, the angular microstructure of the first surface (1B) or the second surface (2B) is a mixed form of the angular elongated body (51B) and the angular unit body (52B); The mixed stripe body (51B) and the curved unit body (42B) * (this part is not illustrated), and the same may be the angular strip body (51B) and the angular unit body (52B) and The mixed type of the curved unit body (42B) (this part is also not shown). As shown in Fig. 13, the schematic diagram of the backlight module of the present invention comprises a backlight module of an optical film (6) of various types of hybrid microstructures as described above. The present invention includes a liquid crystal display of an optical film of various types of hybrid microstructures as described above. Further, the attachment 1 is a schematic view showing the optical intensity measurement of the optical film, and the lines of the two optical films are crossed by 90 degrees, wherein the texture of the lower optical film is parallel to the Y axis, and the texture of the upper optical film is parallel to the X axis. An isotropic light source (not shown in Annex 1) is placed under the lower optical film, and isotropic indicates that the number of rays in each direction is equal. A detection surface (not shown in Annex 1) is placed above the upper optical film, which measures the measurement of the light emitted from the optical film in all directions. Attachment 2 is a schematic diagram of the optical film of the present invention. The lines of the two optical films cross each other at 90 degrees, and the optical intensity emitted is as shown in Annex 3, which is half height in the vertical direction. 11 M305348
強度的位置在36度角，火伞古a ρ μ L 序以的半高強度的位置在15 度角處，該水平方向上有較高的集光 0.356cd’高於習知光學膜之強度。 強度為 【圖式簡單說明】 第圖係為本創作之第一表面具有複數狐形微結構與角形 微結構之混合型微結構示意圖。 第=圖係為本創作之第—表面及第二表面具有複數弧形微The position of the intensity is at 36 degrees, and the half-height intensity of the ancient a ρ μ L sequence of the fire umbrella is at a 15 degree angle. The horizontal direction has a higher light collection of 0.356 cd' than the intensity of the conventional optical film. . The intensity is [Simplified description of the drawing] The first figure is a schematic diagram of the hybrid microstructure of the first surface of the creation having a plurality of fox-shaped microstructures and angular microstructures. The first picture is the first part of the creation - the surface and the second surface have a complex arc
結構與角形微結構之混合型微結構示意圖。 第三圖係為本創作實施例之第—表面中之弧形長條體食角 形長條體係等數依序交互排列之示意圖。 第四圖係為本創作實施例之第—表面中之弧形長條體與角 I長條體係不等數交互排列之示意圖。 第五圖係為本創作實施例之第—表面之弧形長條體與角形 長條體之延伸方向與第二表面之弧形長條體與角形長條體 之延伸方向皆為第一方向之示意圖。 #第六圖係為本創作實施例之第—表面之弧形長條體與角形 長條體之延伸方向為第一方向，而第二表面之弧形長條體 與角形長條體之延伸方向為第二方向之示意圖。 第七圖係為本創作實施例之第一表面中之弧形微結構為弧 形單元體，角形微結構為角形單元體之示意圖。 第八圖係為本創作實施例之第一表面中之弧形單元體係集 中於同列，角形單元體則集中於另列之示意圖。 第九圖係為本創作實施例之第一表面中之弧形單元體與角 形單元體係等數依序交互排置於同列之示意圖。 12 M305348 第十圖係為本創作實施例之第一表面中排列在同一方向上 之弧形單元體與角形單元體係不等數交互排置於同列之示 意圖。 第十一圖係為本創作實施例之第一表面之弧形微結構為弧 形長條體與弧形單元體之混合型態之示意圖。 第十二圖係為本創作實施例之第一表面之角形微結構為角 形長條體與角形單元體之混合型態之示意圖。 第十三圖係為本創作實施例之背光模組示意圖。 B 第十四圖係習知技術之背光模組示意圖。 附件1係本創作實施例之光學強度測量示意圖。 附件2係本創作實施例之光學膜之示意圖。 附件3係本創作實施例之光學膜發出之光學強度之示意圖。 附件4係習知光學膜之示意圖。 附件5係習知光學膜發出之光學強度之示意圖。 【主要元件符號說明】 (1) 第一表面 (2) 第二表面 (3) 侧邊 (4) 弧形微結構 (5) 角形微結構 (41) 弧形長條體 (51) 角形長條體 (1A) 第一表面 (2A) 第二表面 (41A) 弧形單元體 (51A) 角形單元體 (1B) 第一表面 (2B) 第二表面 (41B) 弧形長條體 (42B) 弧形單元體 (51B) 角形長條體 (52B) 角形單元體 13 M305348 (6) 光學膜 (A) 背光模組 (A1) (All) 侧邊 (A12) (A2) 擴散點 (A3) (A4) 反射片 (A5) (A6) 增亮膜 (B) 光線 (C) 導光板 底面 光源 擴散片 液晶面板Schematic diagram of a hybrid microstructure of a structure and an angular microstructure. The third figure is a schematic diagram of the sequential arrangement of the arc-shaped long strips of the edible strip-shaped strips in the first surface of the present embodiment. The fourth figure is a schematic diagram of the unequal number arrangement of the arc-shaped strip body and the angle I strip system in the first surface of the present embodiment. The fifth figure is the first direction of the extending direction of the arcuate elongated body and the angular elongated body of the first surface of the present invention and the extending direction of the curved elongated body and the angular elongated body of the second surface. Schematic diagram. The sixth figure is the first direction of the curved elongate body and the angular elongate body of the first surface of the creation embodiment, and the extension of the curved elongate body and the angular elongate body of the second surface The direction is a schematic diagram of the second direction. The seventh figure is a schematic view of the arc-shaped microstructure in the first surface of the present embodiment as an arc-shaped unit body, and the angular-shaped microstructure is an angular unit body. The eighth figure is a schematic diagram in which the arc-shaped unit system in the first surface of the first embodiment is in the same column, and the angular unit body is concentrated in another column. The ninth figure is a schematic diagram in which the arc-shaped unit body and the angular unit system in the first surface of the first embodiment are sequentially arranged in the same column. 12 M305348 The tenth figure is the intention that the arc-shaped unit body and the angular unit system are arranged in the same row in the same direction in the first surface of the first embodiment of the present invention. The eleventh figure is a schematic view showing the arc-shaped microstructure of the first surface of the present embodiment as a mixed form of the arc-shaped elongated body and the curved unit body. The twelfth figure is a schematic view showing the angular microstructure of the first surface of the present embodiment as a mixed form of the angular elongated body and the angular unit body. The thirteenth figure is a schematic diagram of the backlight module of the present embodiment. B. Figure 14 is a schematic diagram of a backlight module of the prior art. Annex 1 is a schematic diagram of the optical intensity measurement of the presently-created embodiment. Attachment 2 is a schematic view of an optical film of the presently-created embodiment. Attachment 3 is a schematic illustration of the optical intensity emitted by the optical film of the presently written embodiment. Annex 4 is a schematic representation of a conventional optical film. Annex 5 is a schematic representation of the optical intensity emitted by conventional optical films. [Description of main component symbols] (1) First surface (2) Second surface (3) Side (4) Curved microstructure (5) Angled microstructure (41) Curved strip (51) Angle strip Body (1A) First surface (2A) Second surface (41A) Curved unit body (51A) Angle unit body (1B) First surface (2B) Second surface (41B) Curved strip body (42B) Arc Shaped unit (51B) Angled strip (52B) Angled unit 13 M305348 (6) Optical film (A) Backlight module (A1) (All) Side (A12) (A2) Diffusion point (A3) (A4 Reflective sheet (A5) (A6) Brightening film (B) Light (C) Light guide plate bottom light source diffuser LCD panel