201017224 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種具有均勻擴散效果 尤指一種具有複數種光學結構體的擴散板。擴散板， 【先前技術】 …目前新世代的顯示裝置如液晶顯示器已經大量研發 北^漸進行市場應用的階段，但由於液晶本身不發光， 月光模組之功能即在於供應充足的亮度與分佈均勻的光 源，使其能正常顯示影像，其基本原理係將常用的點或 線型光源’透過簡潔有效光機構轉化成高亮度且均一輝 度的面光源產品。一般直下式的結構係利用冷陰極管的 線型光源經反射罩藉由擴散板的均光作用與稜鏡片的集 光作用以提高光源的亮度與均齊度。 目如擴散板的技術不斷地演進，主要的目的在於能 φ 達成光線的均勻化’從傳統的單一稜鏡（prism)結構進 行研發，例如美國專利號US 6606133揭露一種出光面及 入光面均有光學結構體的擴散板，但在一般製程中，雙 面的成型製程的難度較高，成品的良率也低，同時也會 造成光學膜片在組裝時的問題。另外，美國專利號us 7255456揭露一種在擴散板的出光面成型有兩種光學結 構’然而該兩光學結構分別為稜鏡（prism)及柱狀透鏡 (lenticular)，此一擴散板有以下缺失：1.該兩種結 構均僅有單一的光學作用，稜鏡僅具有分光效果；柱狀 5 201017224 透鏡僅具有擴光效果，故兩者的搭配所達成光線的均 勻化效果較差。2.該稜鏡在結構上存在有一尖點，故與 其他光學片組裝時會造成其他光學膜片的刮傷，使得產 品的可靠度降低。3.生產時，尖點的結構造成擴散板的 生產良率低或擴散板的成型較為困難。 換句話說，傳統的擴散板普遍存在無法有效提升光 線均勻度或其他組裝或成型良率較低的問題，導致背光 模組的應用面無法進一步提升。緣是，本發明人有感上 述缺失之可改善，提出一種設計合理且有效改善上述缺 失之本發明。 【發明内容】 本發明之主要目的，在於提供一種具有均勻擴散效 果之擴散板，該擴散板上設有兩個以上不同結構之光 學結構體，而單一光學結構體可以同時具有兩種光學效 應：分光及擴光，以提供較佳均勻性質的光線。 為了達成上述之目的，本發明係提供一種具有均勻 擴散效果之擴散板，其包括：一出光面及一入光面，該 出光面包含有重複且交錯排列之第一光學結構體及第 二光學結構體，其中該第一光學結構體係具有兩側面 及一頂面，且該兩侧面係沿著光線方向相互傾斜；該 第二光學結構體截面之外緣係為一曲線。 本發明更提供另一種具有均勻擴散效果之擴散板， 其包括：一出光面及一入光面，該出光面包含有重複 6 201017224201017224 IX. Description of the Invention: [Technical Field] The present invention relates to a diffusion plate having a uniform diffusion effect, especially a plurality of optical structures. Diffusion plate, [Prior Art] ... At present, new generations of display devices such as liquid crystal displays have been extensively developed in the stage of market application, but since the liquid crystal itself does not emit light, the function of the moonlight module is to supply sufficient brightness and uniform distribution. The light source enables it to display images properly. The basic principle is to convert a commonly used point or line light source into a high-brightness and uniform brightness surface light source product through a simple and effective optical mechanism. Generally, the direct type structure utilizes a linear light source of a cold cathode tube through a reflector to enhance the brightness and uniformity of the light source by the uniform light action of the diffusion plate and the light collecting action of the cymbal. The technology of the diffuser plate is continually evolving, and the main purpose is to achieve the homogenization of light φ from the conventional single prism structure, for example, US Pat. No. 6,606,133 discloses a light-emitting surface and a light-incident surface. A diffusing plate having an optical structure, but in a general process, the double-sided forming process is difficult, the yield of the finished product is low, and the optical film is also assembled. In addition, U.S. Patent No. 7,255,456 discloses a method of forming two optical structures on the light exit surface of a diffusing plate. However, the two optical structures are respectively a prism and a lenticular lens. The diffusing plate has the following defects: 1. Both structures have only a single optical effect, and only have a splitting effect; the cylindrical 5 201017224 lens only has a light-expanding effect, so the uniformity of the light achieved by the combination of the two is poor. 2. There is a sharp point in the structure of the crucible, so when assembled with other optical sheets, it will cause scratches of other optical films, which will reduce the reliability of the product. 3. During production, the structure of the cusp causes the production yield of the diffusion plate to be low or the formation of the diffusion plate to be difficult. In other words, the conventional diffusion plate generally has the problem that the uniformity of the light line or other assembly or molding yield cannot be effectively improved, and the application surface of the backlight module cannot be further improved. On the contrary, the present inventors have felt that the above-mentioned defects can be improved, and propose a present invention which is rational in design and effective in improving the above-mentioned defects. SUMMARY OF THE INVENTION The main object of the present invention is to provide a diffusing plate having a uniform diffusion effect, wherein the diffusing plate is provided with two or more optical structures of different structures, and the single optical structure can simultaneously have two optical effects: Splitting and dimming to provide light of better uniform properties. In order to achieve the above object, the present invention provides a diffusing plate having a uniform diffusion effect, comprising: a light emitting surface and a light incident surface, the light emitting bread comprising a repeating and staggered first optical structure and a second optical structure The first optical structural system has two sides and a top surface, and the two sides are inclined to each other along a light ray direction; the outer edge of the second optical structure is a curve. The present invention further provides another diffusion plate having a uniform diffusion effect, comprising: a light-emitting surface and a light-incident surface, the light-emitting bread containing a repeating 6 201017224
且交錯排列之第一光學結構體及第二光學結構體，其 中該第一光學結構體係具有兩侧面及一頂面，該第一 光學結構體之兩侧面係沿著光線方向相互傾斜，且該 第一光學結構體具有一第一最大寬度；該第二光學結 構體係具有兩侧面及一頂面，該第二光學結構體之兩 侧面係沿著光線方向相互傾斜，且該第二光學結構體 具有一第二最大寬度，且該第一最大寬度不等於該第 二最大寬度。 本發明亦提供應用上述擴散板的背光模組。 本發明具有以下有益的效果：本發明提出之光學結 構體可以同時具有擴光及分光的效應，例如類梯形光學 結構體的侧面可以進行分光，其頂面可以進行擴光，同 時搭配兩種以上不同型態的光學結構體，以達成相當優 秀的光均勻之功效。 為使能更進一步瞭解本發明之特徵及技術内容，請 參閱以下有關本發明之詳細說明與附圖，然而所附圖式 僅提供參考與說明用，並非用來對本發明加以限制者。 【實施方式】 本發明係提供一種具有均勻擴散效果之擴散板1， 該擴散板1上設有兩個以上不同結構之光學結構體進 而達成良好光線均勻度之擴散效果。請參閱第一圖、第 一 A圖、第一 B圖及第一 C圖，其為本發明之第一實施 例，該擴散板1包括一入光面1 0 0及一出光面1 0 7 201017224 / ’本發明之特徵在於該^面1 Q 1上成型有複數 個重稷且交錯排列之第—光學結構體121及第二井 二t構體1 2 2 ’其中該兩光學結構體係為不同輪廓 ί =構體：同時該兩光學結構體對於入射光線會 高成，。其中，該第-光 且=二颁梯形結構，亦即該第一光學結構體 二2921及-頂面⑴以，其中該i 曲線!如t:二所 社❹I )亥兩側面1211即為梯形 二冓中不互相平行之兩對邊（以光學結構體之外 ^中話說該兩侧面1211係沿著光線方向（如 學相互傾斜而彼此#近°另外該第二光 _ 1 2 2的截面之外緣係為—曲線， 不同結構之兩光學結構體對 參 時產生分光及擴二值= 則可介於、至85〇_之間。：=，度Ρ :體最佳為等高結構’但兩者之間亦可以;=學 高度則介於以^^^—光學結構體工^的 成型製程之良率。維持該光學結構體的 8 201017224 1外，該第二光學結構體！ 2 2 質種圓錐曲線，例如滿足圓、橢圓或拋物卜^ 备式的4段’且該圓錐曲線之圓錐係數小於等於（ 有圓錐曲線輪廓的結構體則可以提供_ ❿ 請先參考第-β®，其為顯示該第—光學結構體工 2 1的-種實施紐。其t該第—光學結構體丄 2面1 2 1 2 B的截面之外緣係為垂直光線方向之 =’換句話說’該頂面工2工2以平行該出光面 ^ 對先線而言，該頂面1 2 1 2B有擴光的效 而形成直線結構（以截面而言）的左右兩側面1 2 1 1則有分光的效果，故該第一光學結構體丄2 1 即具有兩種光學特性而非只能單純的分光或擴光；且 以f線強度而言，該兩側面1 2 1 1之分光強度會大 方、》亥頂面1 2 1 2 B之擴光強度，例如人射光為j〇〇， 則分光強度為51，而擴光強度為49，但不以此為限。 «月再芩考第一 A圖，其為該第一光學結構體1 2 1 的另-種實施態樣。其中該第一光學結構體工2工之 頂面]^ 2 1 2 A的外緣係為一曲線，且該曲線之曲率 半，係小於等於（$)該第-光學結構體1 2 1之最 大見度P’換句話說，在此實施態樣中，該頂面1 2 1 2 A的外緣會形成—段有曲率的線段；而對光線而 言’該曲面型態之頂面1 2 1 2 A同樣有擴光的效 果，而為直線結構的左右兩侧面工2工工則有分光的 9 201017224 文果同樣以光線強度而士 強度會大於頂面i ’该側面1 2 1 !之分光 施態樣尹，該出光面1 汽光強度。故在上述兩種實 學結構體，豆中呈^上成型有兩種不同型態的光 21可同時具形結構之第—光學結構體1 ❿ 鲁 有擴光效果的第二光學結果，再搭配具 效的均勾化，以輸出㈣sn’可將入射光有 請參考第一C圖，其為本 種實施態樣，本實施態樣 X月弟—a例中之第三 中該出光面！ f) b = A圖所變化而成，其 構體1 2 3，其中該第三，^複排列之第三光學結 側面1 2 3 1及—頂面=構體/ 2 3係具有兩 1係沿著光線方向相互傾 且°亥兩側面1 2 3 m Ί 〇 〇 针而罪近，該第二光學έ士媸 -1 2 3之頂面丄2 3 2的 ：：卜構 直線。故從型態上來看，本、::直光線方向之 構體1 2 3即等同於第一 B二：：二中的第三光學結 0, 乐 圖中的第—光學处槿俨1 2 1 ’而利用上述三種不同的光 ： 可以提高光線的均勻度。 。稱虹之格配，亦 接著，請參考第二圖至第二B 二實施例，而與第—實施例不同的：之本發明之弟 上的光學結構體於擴散板 每η M以下將詳細說明本實施例的各種 該第-光學結構體i 2 K^本=Λ %例中’ 1 ，、及弟—光學結構體1 2 】0 201017224 結構’亦即該第-光學結構體 A:，該第一光學結構體1/及-頂…12 1係沿著光線方向相互傾斜而彼此t兩側面121 結構的不平行的相„罪近，形成梯形 投影則為一水平的直頂面⑴…的 A '該第二光學結構 ：面1 2 2 2 1 一尨、、此—，丄 1 ^ ^ 之兩側面1 2 ? 係化者光線方向相互傾 ，平行的相對側邊，'==二成梯： t影:二:水平的直線。而該第-光學結構體1 2 1〆、D亥弟—光學結構體1 2 2，的#田* 有不同的最大寬度（意指 兴於兩者具 ❿ 二光學結構體122 一的第二最大第 ，體12厂的第-最大寬光f 大兔度P2為350⑽，而第一最大寬度ρι為^一取 但上述第一最大寬度ρι與第二最大寬度M m盘 ::實施例相同，介於4〇//m至叫m之間。：實： 列用上述兩種不同最大寬度之類梯形結構，同= 以達成側面分光及頂面擴光的效果右 佳均勻度的光線。 知出具有車父 請參考第二B圖，其為本實施例中的第二 悲7 ，其中與第二A圖中之差異在於該第—士 體i2r之頂面1212B、外緣係為構 11 201017224 且該曲線之曲率半徑係小於等 構體1 2 1 >之第一f 士&库P1 .=) 5亥罘一光學結 ^ 1 2 2 ^ τι ^ 1 、見又P ，而該第二光學結構 ^ ^之頂面2 2 2 2 B -的 該[光 面分^頂^光的效果達成輪二==側 丄：如具有第三最大寬度的第三種光學社 等’利用上述可同時出光、擴光的 -二均勻度之光線，而本實施例 二 一實施例，在此不再贅述。 貝寺同於弟 再-方面’上述的結構可依照光學設 行變化，請參考第三圖，當本 '，考1進 :_)等應用，上述第一;=以於； ❹ 光學結構體12 2或第三光學 (第三圖僅緣出第-光學結構體 =1、工。而當擴散板1應用於發光 光，構體之凸體的二維結構)或结;= 四A圖如弟二貫施例之光學結構體之凹部的二維結 12 201017224 話說’在不同的應用情況下，上述光學結構 輸出。fl目ΐ應的變化’同時達到良好均勾效果的光 ΐ化成-目維i: f他實施態樣中的擴散板1同樣可以 ^ 、、: 一 '，隹的結構，以產生均勻化光線的目的。 成及=考明之擴散板1的内部組 /、匕括—主層1 〇、一設置於該主層i 〇a first optical structure and a second optical structure, wherein the first optical structure has two sides and a top surface, and the two sides of the first optical structure are inclined to each other along a light direction, and the The first optical structure has a first maximum width; the second optical structure has two sides and a top surface, the two sides of the second optical structure are inclined to each other along the light direction, and the second optical structure There is a second maximum width, and the first maximum width is not equal to the second maximum width. The present invention also provides a backlight module to which the above diffusion plate is applied. The invention has the following beneficial effects: the optical structure proposed by the invention can simultaneously have the effects of light expansion and spectrometry, for example, the side surface of the trapezoidal optical structure can be split, and the top surface can be expanded, and at the same time, two or more types can be matched. Different types of optical structures to achieve a fairly excellent light uniformity. For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings. [Embodiment] The present invention provides a diffusing plate 1 having a uniform diffusion effect, and the diffusing plate 1 is provided with two or more optical structures of different structures to achieve a good light uniformity diffusion effect. Please refer to the first figure, the first A picture, the first B picture and the first C picture, which is a first embodiment of the present invention, the diffusion plate 1 includes a light incident surface 1 0 0 and a light output surface 1 0 7 201017224 / 'The invention is characterized in that the surface 1 Q 1 is formed with a plurality of overlapping and staggered first optical structures 121 and a second well two t structures 1 2 2 ' wherein the two optical structural systems are Different contours ί = structs: At the same time, the two optical structures will be high for incident light. Wherein, the first-light and the second-ordered trapezoidal structure, that is, the first optical structure body 2921 and the top surface (1), wherein the i-curve: such as t: two corps I), the two sides 1211 are trapezoidal Two pairs of sides that are not parallel to each other in the two sides (in the case of the optical structure, the two sides 1211 are along the direction of the light (such as learning to tilt each other and close to each other) and the second light _ 1 2 2 The outer edge is a curve, and the two optical structures of different structures generate the splitting and the divergence of the reference time = then between 85 and _.:=, degree Ρ: the best is the contour structure 'But it can be between the two; = the height of the learning is between the yield of the molding process of ^^^-optical structure. The second optical structure is maintained in addition to the 2010 20102424 1 of the optical structure! 2 2 The conical curve of the species, for example, the 4 segments of the circle, ellipse or parabola are satisfied and the conic coefficient of the conic is less than or equal to the structure (the structure with the conic contour can provide _ ❿ please refer to the -β first) ®, which is an implementation of the first optical structure of the first optical structure. The t-optical structure The outer edge of the cross section of the 2 face 1 2 1 2 B is the vertical light direction = 'in other words, the top surface 2 is 2 parallel to the light exit surface ^ for the front line, the top surface 1 2 1 2B The left and right sides of the linear structure (in terms of the cross section) 1 2 1 1 have the effect of splitting light, so the first optical structure 丄 2 1 has two optical characteristics rather than simply Dividing or dimming; and in terms of f-line intensity, the intensity of the splitting of the two sides 1 2 1 1 will be generous, and the intensity of the lightening of the top surface of the 1 2 1 2 B, for example, the human light is j〇〇, The spectral intensity is 51, and the intensity of the light is 49, but not limited to this. «Review of the first A picture, which is another embodiment of the first optical structure 1 2 1 . The top surface of the first optical structure is the curve of the outer edge of the ^ 2 2 2 A, and the curvature of the curve is half, which is less than or equal to ($) the maximum of the first optical structure 1 2 1 In other words, in this embodiment, the outer edge of the top surface 1 2 1 2 A will form a line segment having a curvature; and for the light ray, the top surface of the surface pattern 1 2 1 2 A with There is a light-expanding effect, but the left and right sides of the straight-line structure work 2 workers have a split 9 201017224 Wenguo also has a light intensity and the strength will be greater than the top surface i 'the side 1 2 1 ! Yin, the light surface intensity of the light surface is 1. Therefore, in the above two kinds of physical structures, the beans 21 are formed with two different types of light 21, which can simultaneously have the shape of the first structure - the optical structure 1 The second optical result of the light effect is matched with the effective one, and the output (four) sn' can be used to refer to the first C picture. This is the embodiment of the present embodiment. In the third of the examples, the light surface! f) b = A picture is changed, the structure 1 2 3, wherein the third, the second optical junction side 1 2 3 1 and the top surface = body / 2 3 system have two 1 The two optical sides of the second optical gentleman 媸-1 2 3 are 罪 2 3 2 :: a straight line. Therefore, from the aspect of the type, the structure of the direct:: direct light direction 1 2 3 is equivalent to the third optical junction 0 in the first B two:: two, the first optical position in the music diagram 1 2 1 'And use the above three different lights: can improve the uniformity of light. . Referring to the pattern of the rainbow, and then, please refer to the second embodiment to the second embodiment of the second embodiment, and the optical structure of the invention of the present invention is different from the first embodiment. The various first optical structures of the present embodiment are described as "1", and the optical structure of the optical structure 1 2] 0 201017224 structure, that is, the first optical structure A: The first optical structures 1/and-tops 12 1 are inclined along the direction of the light rays and the non-parallel phases of the structures of the two sides 121 of each other are close to each other, and the trapezoidal projection is a horizontal straight top surface (1)... A 'the second optical structure: face 1 2 2 2 1 尨,, this, 丄 1 ^ ^ of the two sides 1 2 ? The directional light direction of each other, parallel opposite sides, '== two Ladder: t shadow: two: horizontal straight line. And the first optical structure 1 2 1〆, D Haidi - optical structure 1 2 2, #田* has different maximum width (meaning two The second largest of the two optical structures 122, the first maximum width of the body 12, the maximum rabbit degree P2 is 350 (10), and the first maximum width ρι is taken The first maximum width ρι is the same as the second maximum width M m: in the embodiment, between 4 〇//m and m.: Real: the column uses the above two different maximum widths and the like, and the same = to achieve the right side of the light and the effect of the top surface of the light to achieve the right uniformity of the light. Know the owner with a car, please refer to the second B picture, which is the second sadness 7 in this embodiment, which is in the second A picture The difference is that the top surface 1212B of the first body i2r and the outer edge are the structure 11 201017224 and the radius of curvature of the curve is smaller than the first f 士 & library P1 .=) 5 of the isomorph 1 2 1 >罘 罘 an optical junction ^ 1 2 2 ^ τι ^ 1 , see and P, and the second optical structure ^ ^ top surface 2 2 2 2 B - the [glossy surface ^ top ^ light effect to achieve round two == 丄 丄 如 第 第 第 第 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The same as the structure of the above-mentioned structure can be changed according to the optical setting, please refer to the third picture, when this ', test 1 into: _) and other applications, the above first; ; 光学 optical structure 12 2 or third optics (the third figure only comes out of the first optical structure = 1, while the diffuser 1 is applied to the illuminating light, the two-dimensional structure of the convex body of the structure) or The two-dimensional junction of the concave portion of the optical structure of the second embodiment is as follows: 201017224 In the case of different applications, the above-mentioned optical structure output. The effect of the dimming into a mesh dimension i: f his implementation of the diffuser 1 can also ^,,: a ', the structure of the ,, to produce a uniform light. Cheng and = the internal group of the diffusion plate 1 of the test /, including - the main layer 1 〇, one set in the main layer i 〇
μ -t 9 ^ I 1及—投置於該主層1 〇上方之微結構 甘：即本發明之擴散板1係為-層狀之三明治 P°S)切t该主層1 Q係為PS塑膠（PQi购rene， == 錢（P〇lycarb〇nate，pc)材質，且該主 ===擴散粒Γ20,可進-步將光線 ^ b 1 1及忒裰結構層1 2則分別設置 主層10的下方及上方，其材質可為ps塑膠 C Polystyrene > PS) ^ MS ^# C Methylmethacrylate styrene)，該底層丄該微結 _ ^ 、進而防止擴散板1產生黃化的問題；另外， 耵述的光學結構體則係成型於該微結構層i 2之表 面101 )。然而上述材質或構成擴散板：之 曰數僅為5兒明之用，並非用以限制本發明。 ^η’本發明針對習知既有的擴散板與本發明的擴 放板1進行光線均勻度的光學模擬結果，並中 曲 (Cr〇SS'SeCtl〇nal) 1 4 吏用有兩支飢光源且無使用擴散板㈣線強度，其中 13 201017224 可看出該兩支CCFL約略設置於40公釐（mm)及8〇公复 (麵）的位置處，故光線強度集中於該兩位置，而遠離 該兩位置的光線強度即大幅降低’亦即光線並未被均勻 化；曲線2則表示在該兩光源上設置有尖點的稜鏡 (posm)之擴散板，但曲線2則明顯出現光線強度上的 波峰及波谷，亦即均勻度並不理想；曲線3則表示在該 兩光源上設置有尖點的稜鏡（prism)及柱狀透鏡 (lenticular)之複合結構式擴散板（即先前技術中所 ^的US 7255456號美國專利），其光線強度的變化亦 ik著與cm錢的距離^出現相對高強度的位置；相較 =下’曲線4及曲線5則為應用本發明之第—實施例及 列之強度變化，由曲線的相對位置 二提出的擴散板1可大幅提高光線 ❿ 度不會受到CCFL光源的位 〜θ而保持相當的均勻程度，故本發明之 均較傳統的擴散板更能輸出高均勻度的光線。“ 程产：Ϊ二根據上述的光強度實驗，本發明可提供均勻 擴線’故實際上應用時’本發明所提出之 使：；相==擴散，即可應用於終端產品的 才能應用在產口上白、°的擴散板必須搭配三個擴散膜 下，或是生產二’故本發明不論在均勻化的功效 表現。 成本的考量下均有較習知擴散板為佳的 圖 其顯示本發明所提出之 請參考第七圖及第七 14 201017224 ，散，1之背光模組3。第七圖為應用第一實施例之 背光模組3，而第七A圖則為應用第二實施例之背光 模組3。背光模組3包括至少一光源3 〇 ;以及上述 之錢散板1，而該擴散板1設置於該光源3 0上方， 亥光源3 Q更設置於—反射結構3 2所形成的空間μ -t 9 ^ I 1 and - microstructures placed on top of the main layer 1 : that is, the diffusion plate 1 of the present invention is a layered sandwich P ° S) t is the main layer 1 Q is PS plastic (PQi purchase rene, == money (P〇lycarb〇nate, pc) material, and the main === diffusion grain Γ20, can step into the light ^ b 1 1 and 忒裰 structure layer 1 2 respectively The bottom layer and the upper portion of the main layer 10 are disposed, and the material thereof may be ps plastic C Polystyrene > PS) ^ MS ^# C Methylmethacrylate styrene), and the underlayer 丄 the micro junction _ ^, thereby preventing the problem of yellowing of the diffusion plate 1; In addition, the optical structure described above is formed on the surface 101 of the microstructure layer i 2 . However, the above materials or the constituent diffusing plates are only used for the purpose of limiting the present invention. ^η' The present invention is directed to the optical simulation result of the light uniformity of the conventional diffusing plate and the expanded plate 1 of the present invention, and the middle curve (Cr〇SS'SeCtl〇nal) 1 4 has two hunger The light source does not use the diffuser plate (four) line strength, wherein 13 201017224 can be seen that the two CCFLs are set at about 40 mm (mm) and 8 〇 public complex (face), so the light intensity is concentrated in the two positions. The intensity of the light away from the two positions is greatly reduced 'that is, the light is not uniformized; the curve 2 indicates the diffuser plate with the posm on the two light sources, but the curve 2 is obvious. The peaks and troughs of the light intensity, that is, the uniformity is not ideal; the curve 3 indicates the composite structure type diffusion plate in which the prism and the lenticular lens are provided on the two light sources (ie, US Patent No. 7,255,456 to the prior art, the change in the light intensity is also the position of the relatively high intensity of the distance from the cm money; compared with the lower curve 4 and the curve 5 is the application of the present invention. The intensity of the first embodiment and the column, the relative of the curve The diffusing plate 1 proposed in position 2 can greatly improve the light intensity without being kept fairly uniform by the position θ of the CCFL light source, so that the present invention can output high uniformity light more than the conventional diffusing plate. “Processing: According to the above-mentioned light intensity experiment, the present invention can provide uniform expansion of the line, so when actually applied, the present invention proposes:; phase==diffusion, which can be applied to the end product. The diffusion plate on the white end of the product must be matched with three diffusion membranes, or the production of two. Therefore, the present invention has the effect of homogenization. The cost is considered to be better than the conventional diffusion plate. Please refer to the seventh figure and the seventh 14 201017224, the backlight module 3 of the first embodiment. The seventh figure is the backlight module 3 of the first embodiment, and the seventh embodiment is the second implementation of the application. The backlight module 3 includes at least one light source 3 〇; and the above-mentioned money dispersing plate 1 , and the diffusing plate 1 is disposed above the light source 30 , and the illuminating light source 3 Q is further disposed on the reflective structure 3 2 spaces formed
以產生^乂尚的売度的光線。該光源3 〇可為CCJ?L # ’或其他種類的發光源’而該擴散板1的 寺城係同於前述之實施例，故不再贅述。 1 綜上所述，本發明具有下列諸項優點： 具有杈佳的光均勻作用，由於上述的光學結構體 可以同時具有擴光及分光的效應，例如類梯形光學 結構體的側面可以進行分光，其頂面可以進行擴 光、’、同時搭配兩種以上不同型態的光學結構體也可 2 =少M〇ire干涉的問題，故本發明之擴散板可以 達成相當優秀的光均勻之功效。 =方面，由於本發明所提出之擴散板結構可以 輛出均勻度相當高的光線’故與其他 配使用時，可以減少其他膜片的數f例如^ :，=用三張擴㈣’但本發明之擴散板 可以二^ ’換句話說，本發明之擴散板 I以有效U轉產品（如顯示器等）的製造成 進而提同本發明之擴散板的應用價值。 板上設有棱鏡（PHsm) ’而稜 ^為一種具有尖點的結構體，此-型態的結構會 15 3 201017224 造成設置於擴散板上方的光學膜因摩擦而刮傷或損 毁的問題；相反的，本發明的結構體的頂面係為平 面或曲面，故可以解決稜鏡結構所造成的問題。 惟以上所述僅為本發明之較佳實施例，非意欲侷限 本發明之專利保護範圍，故舉凡運用本發明說明書及圖 式内容所為之等效變化，均同理皆包含於本發明之權利 保護範圍内，合予陳明。 ❿ 【圖式簡單說明】 第一圖係本發明之具有均勻擴散效果之擴散板之第一實 施例之示意圖。 第一 A圖係第一圖中A部分放大圖。 第一 B圖係第一實施例中第二種實施態樣之示意圖。 第一 C圖係第一實施例中第三種實施態樣之示意圖。 第二圖係本發明之擴散板結構之第二實施例之示意圖。 φ 第二A圖係第二圖中B部分放大圖。 第二B圖係第二實施例中第二種實施態樣之示意圖。 第三圖係第一實施例之一維結構之示意圖。 第四圖係第一實施例之二維結構之示意圖。 第四A圖係第二實施例之二維結構之示意圖。 第五圖係本發明之擴散板之結構示意圖。 第六圖係本發明之擴散板與習知擴散板之發光均勻度 光學模擬圖。 16 201017224 第七圖係應用第一實 圖。 、^例之擴散板之背光模組的示意 第七A圖係應用第二餘a 意圖。 例之擴散板之背光模組的示 【主要 0 1 2 元件符號說明 擴散板 主層 底層 微結構層To produce a light that is too fine. The light source 3 〇 may be CCJ?L # ' or other kinds of illuminating sources', and the temple of the diffusing plate 1 is the same as the foregoing embodiment, and therefore will not be described again. In summary, the present invention has the following advantages: It has excellent light uniformity, and since the above optical structure can simultaneously have the effects of light expansion and spectrometry, for example, the side surface of the trapezoidal optical structure can be split, The top surface of the optical structure can be light-expanded, and at the same time, two or more different types of optical structures can also be used. 2 = less M〇ire interference, so the diffusion plate of the present invention can achieve a fairly excellent light uniformity. On the other hand, since the diffuser structure proposed by the present invention can emit light having a relatively high uniformity, it can reduce the number of other diaphragms f, for example, when used together with other materials, for example, = three expansions (four)' The diffusing plate of the invention can be used in other words, the diffusing plate I of the present invention is manufactured with an effective U-turn product (such as a display, etc.) to further enhance the application value of the diffusing plate of the present invention. The prism (PHsm) is provided on the board, and the edge is a structure having a sharp point. The structure of the type 15 3 201017224 causes the optical film disposed above the diffusion plate to be scratched or damaged by friction; On the contrary, the top surface of the structure of the present invention is a flat surface or a curved surface, so that the problem caused by the crucible structure can be solved. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, the equivalents of the present invention and the equivalents of the drawings are all included in the present invention. Within the scope of protection, it is given to Chen Ming. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic view of a first embodiment of a diffusion plate having a uniform diffusion effect of the present invention. The first A picture is an enlarged view of part A in the first figure. The first B diagram is a schematic diagram of a second embodiment of the first embodiment. The first C diagram is a schematic diagram of a third embodiment of the first embodiment. The second drawing is a schematic view of a second embodiment of the diffuser structure of the present invention. φ The second A picture is an enlarged view of part B in the second figure. Figure 2B is a schematic view of a second embodiment of the second embodiment. The third figure is a schematic diagram of one of the dimensional structures of the first embodiment. The fourth figure is a schematic view of the two-dimensional structure of the first embodiment. The fourth A diagram is a schematic diagram of the two-dimensional structure of the second embodiment. The fifth figure is a schematic structural view of the diffusion plate of the present invention. The sixth figure is an optical simulation diagram of the uniformity of illumination of the diffusing plate of the present invention and a conventional diffusing plate. 16 201017224 The seventh figure is the first actual application. The schematic diagram of the backlight module of the diffusion plate of the example is the second embodiment of the application. Example of the backlight module of the diffusion plate [Main 0 1 2 Component symbol description Diffusion plate Main layer Bottom layer Micro structure layer
〇 〇 CM 入光面 出光面 2 2 光學結構體 第二光學結構體 ,^ 第三光學結構體 ❿ 2 2 1 33 0 PP1 2 A、1 2 2 A ' 1 擴散粒子 紫外光吸收粒子 背光模組 光源 q 2 2 側面 ]B、l232、1212A>， 2B一、1222B 一 頂面 最大寬度 第一最大寬度 反射結構 201017224 P2 第二最大寬度〇〇CM into the light surface 2 2 optical structure second optical structure, ^ third optical structure ❿ 2 2 1 33 0 PP1 2 A, 1 2 2 A ' 1 diffused particle ultraviolet light absorption particle backlight module Light source q 2 2 side] B, l232, 1212A>, 2B one, 1222B a top surface maximum width first maximum width reflection structure 201017224 P2 second maximum width
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