TW594265B - Light source modulation apparatus of function curve type lens optical grating - Google Patents

Light source modulation apparatus of function curve type lens optical grating Download PDF

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Publication number
TW594265B
TW594265B TW92120318A TW92120318A TW594265B TW 594265 B TW594265 B TW 594265B TW 92120318 A TW92120318 A TW 92120318A TW 92120318 A TW92120318 A TW 92120318A TW 594265 B TW594265 B TW 594265B
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Taiwan
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light
function
function curve
light source
present
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TW92120318A
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Chinese (zh)
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Jian-Shian Lin
Bo-Hung Yau
You-Nan Bau
Yi-Kai Pan
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Ind Tech Res Inst
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Abstract

The present invention provides a light source modulation apparatus that is mainly used in backlight module of liquid crystal display panel, or is generally used to uniformly diffuse light. By combining the technique of the microstructure application with backlight module design, functional cure-type lens grating is processed and formed on the transparent substrate. The purpose of making uniform light can be obtained through the angle variations and the simulated variations of pitch size and light bending. In the invention, it is capable of integrating the conventional diffusion plate and the light-collection plate to form a new light-source modulation apparatus with high transmittance, high uniformity and high brightness. In addition, the micro-electro-mechanical processing technique adopted in the invention can have extremely high feasibility and value in mass production or in manufacturing.

Description

594265 (案號第092120318號專利案更正說明書之修正) 【發明所屬之技術領域】 本發明係有關-種可將光源均勻霧化之光源調制裝置,特別是有 關-種用以取代傳統擴散片,將微機電、疊紋效應、模造成形等技術 加以整合而達到高穿透率、高均勻度及高亮度目的之新型光源調制裝 置。 【先前技術】 TFT_L⑶面板已快速取代映絲(CRT)成為現今的監㈣主流,而 其中背光模线為LCD©板巾的重要零組狀―,佔La)面板成本約 跳〜20〇/〇。-般來說,LCD的背光模組包括冷陰極管、反射板、導 光板、擴散板以及集光板等部分,其中擴散板的功能乃是提供液晶顯 示器-綱㈣面統,舰由LCD螢幕麵示之影像亮度能趨於調 和士致。現有之擴散板製程不外乎利用不同折射率的微粒掺入光硬化 型樹脂中,賴脂摻合完成後以顧器和塗佈機將該樹脂摻合物塗佈 在聚乙烯對笨二甲酯(PET)上,翻用紫外光曝光機進行曝光使薄膜硬 ,,型’達到改變光硬化型樹脂中微粒子的種類、添加量、粒徑大小 或77佈。擴散板的擴散原理主要是由於擴散層中的樹脂與填充的微粒 子之間的折射率差異所造成。圖一係為傳統的擴散板構造 ’如圖所示, 5亥擴散板1其係以一樹脂摻合物u塗佈於聚乙烯對苯二甲酯(PET)基板 U上j並置入微粒子12分散於該樹脂摻合物u之間,光線入射後經過 忒擴散層時會不斷的在兩個折射率相異的介質中穿過,因而發生反覆 之2射、反射與散射等現象,進而形成光學擴散的效果。惟此種方法 ,製成的擴散片過程繁雜,成本較高,且光線經由多次折射、反射與 政,的結果勢必造成光能大量雜,導致亮度不解問題,為解決此 問題,傳統上往往需要設置一集光板,以提高光源的亮度。 明參考圖一’其係為3M公司所發展應用於增益片上之稜行光栅2 594265 . (案號第0921203丨8號專利案更正說明書之修正) ,圖,而圖三所示,則為習知之柱狀透鏡光栅3結構,此处 .使光人射,過其所形成之透鏡模組本身的聚光效果,將光。籌= • 加。惟其單純的幾何圖形如球、圓柱形、三角形等,去右又曰 .理,並整 光學性能而達到擴散片的功能,因此,本發明遂利用此—原理的控制 合非對赋加讀念’細_散_縣及性缺行革命,_ 一製作簡易,又可解決習知技術缺點之新型光源調制裝置, 【發明内容】 置,本目的係提供—函數曲線型透鏡光栅之光源調如 置该衣置可將光源均句霧化,係運用微機電製程加工、庫 向高均皱及高亮度之新贱源調制裝置。 目的係提供—函數曲線型透鏡光栅之光源 1進_电加工技術製作該裝置表面之超精密加工曲面,此—办 工核式係可將整個擴散板製程以予簡化,並降低其製造成本。 f置的’本發明提供一函數曲線型透鏡光柵之光源調制 :一= 本體,該本體係具有·· -第-平面、-第二平 第-長側、“城n面。其巾娜—平面具有兩兩婦應之一 了短側邊’該第一長側邊係呈現出—第—函數曲線 第二平面卜二千面係,亥弟一平面垂直相交於該第一短側邊,而於該 線圖步對於韻—域邊之—第二短輯係』現-第二函數曲 =面上^—曲關與該第—平面相交於該第—長側邊,而於該第 圖开Ί第目^第—長側邊之—第二長側邊係呈現—第三函數曲線 y 曲面係由該第二短側邊與該第二邊所構成,並分別 594265 (案號第092120318號專利案更正說明書之修正) 與該第二平面和第一曲面相交於該第二短側邊與該第二長側邊上。 本發明係整合光學微結構應用與背光模組設計等兩種技術,先利 用角度變化、間距大小、光屈度變化等模擬出一組或多組透鏡所造成 之疊紋變化,藉以決定函數曲線型透鏡光柵之型態,再利用微機電技 術體加工技術(Bulk micr〇maching)如深刻電鑄模造技術(UGA製成技 術)、雷射加工、超精密四軸與五軸等進行母模之加工作業,最後再由 母模製成所需之透鏡光栅結構。 此外,本發明之設計中,亦可加入光學繞射元件如弗奈爾透鏡 (Fresnel Lens)等以替代函數曲線型透鏡光柵之構造,其係可薄化整個 光源調制裝置之厚度,更適合以微機電製程技術加卫,簡化整個製造 流程。 【實施方式】 以下將舉出較佳實施例以詳細說明本發明曲線型透鏡光柵之光源 调制叙置的洋細手段、動作方式、達成功效以及本發明的其他技術特 徵。 _圖四,利用透鏡像差特性來調制光線使其霧化之示意圖,如圖所 不光$穿透具有弧形曲面41之透鏡4後,係可將光線均勻四散,以 達模糊霧化之效果,本發明主要係運用此一微結構的特性配合一组或 多組曲線型透鏡光栅所造成之疊加變化將強光源以予均勻化,進而使 光線入射後可於後方之空間平面42上形成具有—定亂度之聚光區 域,從而達到傳統擴散片之功能。 圖五為本發明非直線型週期透鏡光栅之結構示意圖,如圖所示, 本發明包括至—少-本體5,該本體5係具有:一第一平面Η、一第二 平面52第曲面53及一第二曲面54。其中該第一平面^具有兩 兩相對應之-第-長側邊511及一第一短側邊512,該第一長側邊m 594265 (案號第092120318號專利案更正說明書之修正) 係呈現出-第-函數曲線_,於本發雜佳實施财該第一函數曲 線圖形可為-連續三角函數_…波浪形函數圖形或—直線函數圖 形丄諸如此類之變化係賴f此類技藝者·依據上·露而加以變 化實施,仍將不失本發明之要義所在,亦不脫離本發明之精神和範圍, 故在此不多加贅述。該第二平面52係與該第—平面51垂直相交於該 短側邊512,而於該第二平面52上相對於該第一短側邊512之」 第二短側邊522係呈現一第二函數曲線圖形,於本發明較佳實施例中 該第二函數曲線圖形可為—連續三角函數圖形、—波浪形函數圖形或 -直線函數圖形,諸如鋪之變化係為熟習聽技藝者所能依據上述 揭露而純變化實施’仍料失本發明之錢所在,林脫離本發明 之精神和範圍’故在此不多加贅述。該第一曲面53係與該第一平面 5H目交於該第-長側邊511 ’而於該第一曲面53上相對於該第一長侧 邊如之-第二長侧邊531係呈現一第三函數曲線圖形,於本發明較 佳實施例中該第三函數曲線圖形可為—連續三角函數圖形、一波浪形 函數圖形或-直線函數_ ’諸如此類之變化係為熟訊類技藝者所 能依據上述揭露而加以變化實施,仍將不失本發明之要義所在,亦不 脫離本發明之精神和範圍,故在此不多加贅述。該第二曲面⑷系由該 第二短側邊522與該第二長側531邊所構成,並分別與誃繁二 和第一曲面53相交於該第二短側邊522與該第二長側邊531上。由該 第一、第二及第三函數曲線圖形所形成之該第一曲面幻與該第二曲面 54遂可構成一函數曲線型透鏡光柵,其係本發明特徵之所在。 依上所述之主體5,本發明之-較佳實施例係可為一頂面正弦函 數透鏡光柵結構5a,其中呈現於該第一長侧邊5Ua之第一函數曲線圖 形係為-直線函數圖开少,呈現於該第二短側邊522a之第二函數圖形: 為-連續抛物線函數卿,呈現於該第二長側邊531&之第三函數曲線 圖形係為一正弦函數圖形。 '' 594265 (案號第092120318號專利案更正說明書之修正) 本發明之又-較佳實施_可為—柱狀正弦函數轉折型透鏡光柵 結構5b,其中呈現於該第一長側邊5Ub之第一函數曲線圖形係為一正 =函數圖形’王現於該第二短側邊522b之第二函數曲線圖形係為一連 繽弧形函數圖形,呈現於該第二長側邊531b之第三函數曲線圖形係為 一直線函數圖形。 本發明之另一較佳實施例亦可為一柱狀轉折型透鏡結構允,其中 王現於口衾第-長側邊511c之第一函數曲線圖形係為一折線函數圖形, 呈現於該第二短側邊522c之第二函數曲線圖形係為一連續孤形函數圖 形,呈現於該第二長側邊531c之第三函數曲線圖形係為一直線函數目 形。 — 此外’本發明之一較佳實施例更可為一稜型轉折型透鏡結構%, 其中呈現於該第-長側邊5lid之第一函數曲線圖形係為一折線函數圖 形’呈現於該第二短側邊522d之第二函數曲線圖形係為一連續三角函 數圖形’呈現於該第二長側邊531d之第三函數曲線圖形係為一直線函 數圖形。 本發明函數曲線型透鏡光柵之光源調制裝置的製造流程係先對其 角度變化、間距大小及光屈度變化加以模擬實驗,得到一較佳之設計 圖案後’利用微機電技術體加工技術(Bulk micr〇maching)如深刻電鑄模 φ 造技術(LIGA製程技術)、雷射加工、超精密四軸與五軸等進行母模之 翻刻,再利用母板將-透光之基板材料加工製成所需之結構。 圖六為本發明非直線型週期透鏡光栅之母模加工方式之一較佳實 施例示意圖,其係先將晶圓61清洗、去水烘烤後,以旋鍍機加以塗底、 上光阻,再置入軟烤箱進行預烤,之後利用曝光機將製好之光罩圖案 轉澤至光阻上,待將不需要之光阻除去後加以硬烤成型62,最後放入 爐管加熱,進行回流(reflow)動作,其係可達到如圖所示之球面化結果 63 ° 9 594265 (案號第092丨20318號專利案更正說明書之修正) 圖七為本發明非直線型週期透鏡光柵之母模加工方式之另一較佳 實施例示意圖,其係利用超精密加工方式,進行四軸或五軸加工 作一用於製造非直線型週期透鏡光柵結構所需之金屬母模7ι。 除了用於m歸面板之背細組上,本㈣還可翻在所有需 要將光線均勻霧化之相關裝置上,其最大特徵在於··傳統的擴散片= 為使用化學製程加入大量之粒子,使得除了基材的吸收外,其加入的 化學粒子亦會吸收可觀之光能,而本發明係基於光學原理所製成,除 了基材本身的吸收外,並無額外之材料吸收光能,因此透光率較一般 現有之擴散片來的高。其另-特徵為··傳統擴散片係光散射的原 理所製成,其光線之擴散角無法控制集中至一可用的範圍内,因而造 成光月b良費’本發明之設計係能有效的控制霧化光源的散射角,進而 將光源的能量集中至可用的範圍之内,此一具備聚光效果之設計,提 t、光源以城之人射肖進讀晶歸面板巾,此部份甚可取代集光板 的功能以簡化液晶顯示面板之背光模組元件與設計。 此外’本發明之特殊設計在實際製作時,係可利用同一塊母模於 製綠程中對-透明導光之基材進行正反兩面之結構加工鑄造,如圖 \所不即所.月的-核一翻製造技術,其係使用相同之母翻案,配 合本發明特殊之折線構造,只需同_面旋轉即可在導光基板之正反兩 面形成對稱之圖樣,其可增強光調制之效果,而使用同一母模之結果 亦^省製造成本、簡化製造程序。請參考圖九,其係為以光學繞射 4如弗奈1透鏡(F_el Lens)模擬球面透鏡之示意圖,於特定位置 所形成的_狀刻痕係可形成與球面透鏡相當之相位,換言之,係可 =相位式光柵以等效之,如其下圖所示。由此方法等效光程之光學 件的厚度,將可小於以透鏡光柵所製成之元件。概而言之,以 光认射元絲實施本發散料,除了顧其結構之製雜術容易 594265 (案號第092120318號專利案更正說明書之修正) 更能縮小整個光源調職置之厚度,使其更具市場顧性與競爭 總之,以上所述者,僅為本㈣之難實關而已,當不能以之 限疋本發明所實施之範圍。大凡依本發明申請專利範圍所作之均等變 化與飾,皆應仍屬於本發明專淑蓋之範圍内,謹請 鑑,並祈惠准,是所至禱。 、—女貝月 【圈示簡單說明】 圖一係為傳統之擴散板結構示意圖; 圖43M公司所發展應用於增益片上之棱行光拇結構示意圖; 圖二為習知之柱狀透鏡光栅結構示意圖; 圖四為透鏡像差特性以調制光線使其霧化之示意圖; 囷圖五為本發明函數曲線型透鏡光栅之光源調制裝置的結構示意 —圖六為本發明函數曲線财鏡光栅之母模加王方式之—較佳實施 例示意圖; Ά 圖七為本發明函數曲線型透鏡光柵之母模加 施例示意圖; 工 方式之另一較佳實 圖八為本發明使用—模兩翻製造技術以形成正反兩面函數曲線型 透鏡光之示意圖; 圖 九為以光學繞射元賴擬球面透賴構紅她式光撕的 圖。 圖號說明: 1-傳統擴散板 Π-樹脂接合物 12-微粒子 13-ΡΕΤ基板 2-棱行光拇 3-柱狀透鏡光栅 4_透鏡 41-弧形曲面 示意 594265 (案號第092120318號專利案更正說明書之修正) 5-本體 51-第一平面 52-第二平面 53-第一曲面 54-第二曲面 511-第一長侧邊 512-第一短側邊 531-第二長側邊 522-第二短側邊 5a頂面正弦函數透鏡光栅結構 511a第一長側邊 512a第一短側邊 531a第二長側邊 522a第二短側邊 5b-柱狀正弦函數轉折型透鏡光柵結構 511b-第一長侧邊 512b-第一短側邊 53 lb-第二長側邊 5c-柱狀轉折型透鏡結構 522b-第二短側邊 511c-第一長侧邊 512c-第一短側邊 53 lc-第二長侧邊 5d-棱型轉折型透鏡結構 522c-第二短側邊 511d-第一長側邊 512d-第一短側邊 53 Id-第二長侧邊 522d-第二短側邊 61 -晶圓 63-光阻形成球面形狀 71-金屬母模 62-光阻硬烤成形594265 (Case No. 092120318 Amendment to the Correction Specification) [Technical Field to which the Invention belongs] The present invention relates to a light source modulation device capable of uniformly atomizing a light source, and particularly to a light source modulation device that replaces a conventional diffusion sheet, A new light source modulation device that integrates micro-electromechanical technology, moire effect, and molding technology to achieve high penetration, high uniformity, and high brightness. [Previous technology] The TFT_L⑶ panel has quickly replaced CRT as the mainstream of surveillance today, and the backlight module is an important group of LCD panels—accounting for La). The panel cost has jumped ~ 20 // . -In general, LCD backlight modules include cold cathode tubes, reflectors, light guides, diffusers, and light collectors. The diffuser function is to provide a liquid crystal display (LCD) system. The brightness of the displayed image can tend to be harmonious. The existing diffusion plate manufacturing process is nothing more than using particles with different refractive indices to be incorporated into the light-hardening resin. After the resin blending is completed, the resin blend is coated on the polyethylene paraben with a gutter and a coater. On the ester (PET), the film is hardened by exposure with an ultraviolet light exposure machine, and the type of the film can be changed to the type, amount of addition, particle size, or 77 cloths of the light-curable resin. The diffusion principle of the diffuser plate is mainly caused by the refractive index difference between the resin in the diffusion layer and the filled fine particles. Figure 1 shows the structure of a traditional diffuser plate. As shown in the figure, the 5H diffuser plate 1 is coated with a resin blend u on a polyethylene terephthalate (PET) substrate U and placed with fine particles. 12 is dispersed between the resin blend u, and when the light passes through the erbium diffusion layer, it will continuously pass through two media with different refractive indices, so repeated phenomena such as double reflection, reflection and scattering occur, and then Creates the effect of optical diffusion. However, with this method, the process of making the diffuser sheet is complicated, the cost is high, and the light is refracted, reflected, and processed multiple times. As a result, a large amount of light energy will inevitably be caused, resulting in a problem of brightness. Traditionally, in order to solve this problem, It is often necessary to set a light collecting plate to improve the brightness of the light source. Refer to Figure 1 ', which is a prismatic grating 2 594265 developed by 3M for use on gain films. (Case No. 0921203 丨 8 Patent Amendment Specification), the figure, and Figure 3 is a Xi Known the structure of the lenticular lens grating 3, here, the light is made to shine through the light collecting effect of the lens module itself formed by the light. Raise = • Add. However, the simple geometric figures such as spheres, cylinders, triangles, etc. go to the right, and then align the optical performance to achieve the function of the diffuser. Therefore, the present invention uses this principle to control the reading and reading of endowments. '细 _ 散 _County and sexual lack of revolution, _ a new light source modulation device that is simple to manufacture and can solve the shortcomings of the conventional technology, [inventive content], the purpose is to provide-the function curve of the light source lens grating adjustment The device can be used to atomize the light source, which is a new low-level source modulation device using micro-electromechanical process processing, high uniform wrinkle and high brightness. The purpose is to provide a light source with a function-curve lens grating. 1_Electro-machining technology to produce ultra-precision machined surfaces on the surface of the device. This-work nuclear system can simplify the entire diffusion plate manufacturing process and reduce its manufacturing cost. The f set of the present invention provides a light source modulation of a function curve type lens grating: a = body, the system has a -th-plane,-a second flat-long side, "city n plane. Its Jin Na- The plane has two short sides. The first long side line presents a first-function curve, the second plane, the two-dimensional plane, and the first plane of the Haidi intersects perpendicularly to the first short side. For the line graph step, the rhyme-field edge-second short series is now-the second function curve = surface ^-Quguan intersects with the first plane at the first long side, and at the first The first section of the figure shows the first long side, the second long side, and the third function curve y. The curved surface system is composed of the second short side and the second side. No. 092120318 amendment to the specification) Intersects the second plane and the first curved surface on the second short side and the second long side. The present invention integrates optical microstructure application and backlight module design. This technique first simulates the moire caused by one or more groups of lenses by using changes in angle, pitch, and diopter. Change to determine the shape of the function curve lens grating, and then use MEMS bulk processing technology (Bulk micromaching) such as deep electroforming molding technology (UGA manufacturing technology), laser processing, ultra-precision four-axis and five-axis The master mold is processed by a shaft, etc., and the required lens grating structure is finally made from the master mold. In addition, in the design of the present invention, an optical diffractive element such as a Fresnel lens can be added instead. The structure of the function curve type lens grating can reduce the thickness of the entire light source modulation device, and is more suitable for strengthening with micro-electro-mechanical process technology and simplifying the entire manufacturing process. [Embodiment] The following will give preferred embodiments for detailed description The light source modulation and arrangement of the curved lens grating of the present invention are described in detail, operation methods, achieving effects, and other technical features of the present invention. _ FIG. 4 is a schematic diagram of using the lens aberration characteristics to modulate light and fog it, as shown in the figure After passing through the lens 4 with the curved surface 41, the light can be scattered evenly to achieve the effect of fuzzy fogging. The present invention mainly uses this micro The structural characteristics combined with the superimposed changes caused by one or more sets of curved lens gratings will homogenize the strong light source, so that after the light is incident, a light converging area with a -deterministic degree can be formed on the spatial plane 42 at the rear, so that It achieves the function of a traditional diffuser. Figure 5 is a schematic diagram of the structure of a non-linear periodic lens grating of the present invention. As shown in the figure, the present invention includes at least-the main body 5, which has: a first plane Η, a The second plane 52 has a third curved surface 53 and a second curved surface 54. The first plane ^ has a pair-first-long side 511 and a first short-side 512, and the first long-side m 594265. (Case No. 092120318 Amendment to the Correction Specification of the Patent Case) It presents the -th-function curve_. In the implementation of the present invention, the first function curve graph can be -continuous trigonometric function _... wavy function graph or- The linear function graphs and the like are changed by artists such as f. It will be implemented based on the above disclosure. It will still not lose the essence of the present invention, nor does it depart from the spirit and scope of the present invention, so it will not be repeated here. . The second plane 52 is perpendicular to the first plane 51 and intersects the short side 512, and the second short side 522 on the second plane 52 is opposite to the first short side 512. Two function curve graphics. In the preferred embodiment of the present invention, the second function curve graphics may be-continuous trigonometric function graphics,-wavy function graphics, or-linear function graphics. Variations such as paving are possible for those skilled in listening art. According to the above disclosure, a pure change implementation is still missing the money of the present invention, and Lin departs from the spirit and scope of the present invention, so I will not repeat it here. The first curved surface 53 is intersected with the first plane 5H at the -long side 511 ′ and appears on the first curved surface 53 relative to the first long side-as shown in the second long side 531. A third function curve graph. In the preferred embodiment of the present invention, the third function curve graph may be a continuous trigonometric function graph, a wave-shaped function graph, or a straight-line function. Any changes that can be implemented based on the above disclosure will still not lose the essence of the present invention, nor deviate from the spirit and scope of the present invention, so I will not repeat them here. The second curved surface is composed of the second short side 522 and the second long side 531, and intersects the first and second curved surfaces 53 at the second short side 522 and the second long side, respectively. On the side 531. The first curved surface and the second curved surface 54 formed by the first, second, and third function curve patterns can then form a function curve lens grating, which is a feature of the present invention. According to the main body 5 described above, the preferred embodiment of the present invention can be a top surface sinusoidal lens grating structure 5a, wherein the first function curve pattern presented on the first long side 5Ua is a linear function The figure is small, and the second function graph presented on the second short side 522a is a continuous parabolic function graph, and the third function curve graph presented on the second long side 531 & is a sine function graph. '' 594265 (Amendment of the Correction Specification of Case No. 092120318) Another-preferred implementation of the present invention-may be-cylindrical sine function turning-type lens grating structure 5b, which is presented on the first long side 5Ub The first function curve pattern is a positive = function graph. The second function curve pattern of Wang Xiang on the second short side 522b is a linear function graph, which is presented on the third of the second long side 531b. The function curve graph is a linear function graph. Another preferred embodiment of the present invention may also be a cylindrical turning lens structure, in which the first function curve pattern of Wang Xian in the first-long side 511c of the mouth is a polyline function graph, which is presented in the first The second function curve pattern of the two short sides 522c is a continuous solitary function graph, and the third function curve pattern of the second long side 531c is a linear function mesh. — In addition, 'a preferred embodiment of the present invention may be a prismatic lens structure%, wherein the first function curve pattern presented on the -long side 5lid is a polyline function graph' presented on the first The second function curve pattern of the two short sides 522d is a continuous trigonometric function graph. The third function curve pattern of the second long side 531d is a linear function graph. The manufacturing process of the light source modulation device of the function curve type lens grating of the present invention is to first perform simulation experiments on the change in the angle, the size of the distance, and the change in the refractive power to obtain a better design pattern. 'Using micro-electromechanical technology (Bulk micr) 〇maching) such as deep electroforming mold φ manufacturing technology (LIGA process technology), laser processing, ultra-precision four-axis and five-axis, etc., to engrav the master mold, and then use the motherboard to process the light-transmitting substrate material into the required The structure. FIG. 6 is a schematic diagram of a preferred embodiment of a master mold processing method for a non-linear periodic lens grating of the present invention. The wafer 61 is first cleaned, dewatered and baked, and then coated with a spin coater to apply photoresist. , Then put it into a soft oven for pre-baking, and then use the exposure machine to transfer the finished mask pattern to the photoresist. After removing the unnecessary photoresist, it is hard-baked to form 62, and finally placed in the furnace tube to heat, Perform the reflow action, which can achieve the spherical result as shown in the figure 63 ° 9 594265 (Amendment of the correction specification of the case No. 092 丨 20318) Figure 7 shows the non-linear periodic lens grating of the present invention Schematic diagram of another preferred embodiment of the master mold processing method, which uses ultra-precision processing to perform four-axis or five-axis plus work-a metal master mold required for manufacturing a non-linear periodic lens grating structure. In addition to being used on the back panel of the M panel, this unit can also be used on all related devices that need to uniformly atomize the light. The biggest feature is that the traditional diffuser = adding a large number of particles for the chemical process, In addition to the absorption of the substrate, the added chemical particles will also absorb considerable light energy. The present invention is made based on optical principles. In addition to the absorption of the substrate itself, there is no additional material to absorb light energy. Therefore, The light transmittance is higher than that of the conventional diffusion sheet. The other feature is that the traditional diffusion sheet is made by the principle of light scattering, and the diffusion angle of the light cannot be controlled to be concentrated within a usable range, so that the light moon b is good. The design of the present invention can be effective Control the scattering angle of the atomized light source, and then focus the energy of the light source within the usable range. This design has a light-gathering effect. It can even replace the function of the light collecting plate to simplify the backlight module components and design of the liquid crystal display panel. In addition, when the special design of the present invention is actually produced, the same master mold can be used to process the front and back of the transparent light-transmitting substrate in the green manufacturing process, as shown in Figure \ 所 不 即 所. The -nuclear one-turn manufacturing technology, which uses the same mother to reverse the case, with the special polygonal line structure of the present invention, only needs to rotate with the same plane to form a symmetrical pattern on the front and back of the light guide substrate, which can enhance light modulation. The effect of using the same master mold also saves manufacturing costs and simplifies the manufacturing process. Please refer to FIG. 9, which is a schematic diagram of simulating a spherical lens with optical diffraction 4 such as a Féel Lens. The _-shaped notches formed at a specific position can form a phase equivalent to a spherical lens, in other words, The system can be equivalent to a phase grating, as shown in the figure below. The thickness of an optical component equivalent to the optical path length by this method will be smaller than that of a component made of a lens grating. In short, the implementation of this divergent material with a light-emitting element is easy to eliminate the miscellaneous technique based on its structure 594265 (Amendment of the Correction Specification for Case No. 092120318), which can further reduce the thickness of the entire light source placement. It is more market-oriented and competitive. In short, the above is only a practical matter of this issue. It should not be limited to the scope of implementation of the present invention. Every equal change and decoration made in accordance with the scope of the patent application of the present invention should still fall within the scope of the present invention. Please ask, and pray for the best. --- Female Beiyue [circle description] Figure 1 is a schematic diagram of the structure of a traditional diffuser; Figure 43M is a schematic diagram of the structure of a prismatic light thumb developed on a gain film; Figure 2 is a schematic diagram of a conventional lenticular lens grating ; Figure 4 is a schematic diagram of the lens aberration characteristics to modulate light to make it fog; 囷 Figure 5 is a schematic diagram of the light source modulation device of the function curve lens grating of the present invention-Figure 6 is the mother model of the function curve financial mirror grating of the present invention The method of adding king—a schematic diagram of a preferred embodiment; Ά FIG. 7 is a schematic diagram of an example of adding a female mold of a function curve type lens grating of the present invention; another preferred embodiment of the working method is shown in FIG. Figure 9 is a schematic diagram of the lens light forming a function curve of the front and back sides. Figure 9 is a diagram of the optical tearing of the red spheroid by the optical diffraction element. Description of drawing number: 1- traditional diffusion plate Π-resin joint 12-fine particles 13-PET substrate 2-edge row light thumb 3-cylinder lens grating 4_lens 41-curved surface schematic 594265 (Case No. 092120318 patent Correction of the amendment to the specification) 5-Body 51-first plane 52-second plane 53-first curved surface 54-second curved surface 511-first long side 512-first short side 531-second long side 522-Second short side 5a top surface sine function lens grating structure 511a First long side 512a First short side 531a Second long side 522a Second short side 5b-Columnar sine function turning lens grating structure 511b-first long side 512b-first short side 53 lb-second long side 5c-column turning lens structure 522b-second short side 511c-first long side 512c-first short side Side 53 lc- Second long side 5d- Prism-type turning lens structure 522c- Second short side 511d- First long side 512d- First short side 53 Id- Second long side 522d- Second Short side 61-Wafer 63-Photoresist forming spherical shape 71-Metal master 62-Photoresist hard baking forming

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TW92120318A 2003-07-25 2003-07-25 Light source modulation apparatus of function curve type lens optical grating TW594265B (en)

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