TW200925683A - Light guide plate, manufacturing method and application thereof - Google Patents
Light guide plate, manufacturing method and application thereof Download PDFInfo
- Publication number
- TW200925683A TW200925683A TW096147118A TW96147118A TW200925683A TW 200925683 A TW200925683 A TW 200925683A TW 096147118 A TW096147118 A TW 096147118A TW 96147118 A TW96147118 A TW 96147118A TW 200925683 A TW200925683 A TW 200925683A
- Authority
- TW
- Taiwan
- Prior art keywords
- light guide
- guide plate
- structures
- plate structure
- structure according
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 239000000758 substrate Substances 0.000 claims abstract description 107
- 229920002120 photoresistant polymer Polymers 0.000 claims description 58
- 239000004973 liquid crystal related substance Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 26
- 238000009792 diffusion process Methods 0.000 claims description 9
- 239000012780 transparent material Substances 0.000 claims description 7
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims 1
- NKVGXFZHMFEZEL-UHFFFAOYSA-N N=NC=NN.C(C(=C)C)(=O)O Chemical compound N=NC=NN.C(C(=C)C)(=O)O NKVGXFZHMFEZEL-UHFFFAOYSA-N 0.000 claims 1
- 239000005642 Oleic acid Substances 0.000 claims 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims 1
- LTJYOHBIFDVGIK-UHFFFAOYSA-N n,n-dihydroxymethanamine Chemical compound CN(O)O LTJYOHBIFDVGIK-UHFFFAOYSA-N 0.000 claims 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims 1
- 239000000052 vinegar Substances 0.000 claims 1
- 235000021419 vinegar Nutrition 0.000 claims 1
- 239000012788 optical film Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000003631 wet chemical etching Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Landscapes
- Planar Illumination Modules (AREA)
Abstract
Description
200925683200925683
觀卿㈣^·;ν: 【發明所屬之技術領域】 本發明是有關於一種導光板結構,且特別是有關於一種 導光板結構及其製造方法與其在液晶顯示器(LCD)之應用。 【先前技術】 在液晶顯示器中’由於液晶分子無法自主發光,因而需 要背光源方能讓使用者觀看到液晶顯示器之面板上所顯示 的内容。液晶顯示器之背光源係由組設在顯示面板背面之背 光模組所提供,因此除了顯示面板以外,背光模組為液晶顯 示器中另一相當關鍵的組件。 請參照第1圖’其係繪示一般侧光式背光模組之架構示 意圖。一般側光背光模組100主要係由導光板1〇2、反射片 104、光源106、燈罩108、擴散片110、稜鏡片n2與稜鏡 片Π4所構成。光源1〇6設置在導光板ι〇2之側邊,而燈罩 1〇8則相對於導光板102而罩設在光源ι〇6之另一側。導光 板102之一表面上設有許多微結構116,且導光板設有 微結構116之一表面壓設在反射片1〇4上,其中導光板1〇2 之微、纟^構116可將入射光予以分散。接著,將擴散片11〇 設置在導光板102上,而與反射片1〇4分別位於導光板1〇2 之相對二側。然後,將稜鏡片112與稜鏡片114依序疊設在 導光板102上方之擴散片110上,而完成背光模組1〇〇之主 要架構。 光源106所發出之光經導光板1〇2與反射片1〇4打散 後,再透過擴散片U0來提升出射光之均勾度。由於光自擴 6 200925683 散片射出後,光之指向性非常差,因此透過棱鏡片丨丨2與稜 鏡片114來修正光之方向後,可達到提高背光模組1〇〇之正 面輝度的效果。 有鑒於一般背光模組1〇〇需要一些光學膜片來提升背 光模組100之出光品質,也因此背光模組1〇〇之厚度不易變 薄。此外’稜鏡片Π2/114與擴散片11〇之價格昂貴,而市 場僅由幾家廠商所寡占,因而導致背光模組1〇〇之成本的下 降空間不大。 ❹BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a light guide plate structure, and more particularly to a light guide plate structure and a method of fabricating the same, and its use in a liquid crystal display (LCD). [Prior Art] In a liquid crystal display, since a liquid crystal molecule cannot emit light by itself, a backlight is required to allow a user to view the content displayed on the panel of the liquid crystal display. The backlight of the liquid crystal display is provided by a backlight module disposed on the back of the display panel. Therefore, in addition to the display panel, the backlight module is another relatively critical component in the liquid crystal display. Please refer to FIG. 1 for the schematic diagram of the general side-lit backlight module. Generally, the sidelight backlight module 100 is mainly composed of a light guide plate 1, a reflection sheet 104, a light source 106, a lamp cover 108, a diffusion sheet 110, a cymbal sheet n2, and a cymbal sheet 4. The light source 1〇6 is disposed on the side of the light guide plate ι2, and the lamp cover 1〇8 is disposed on the other side of the light source ι6 with respect to the light guide plate 102. A surface of the light guide plate 102 is provided with a plurality of microstructures 116, and a surface of the light guide plate is provided with a surface of the microstructure 116. The surface of the light guide plate 116 is pressed on the reflective sheet 1〇4, wherein the micro-structure 116 of the light guide plate 1〇2 can be The incident light is dispersed. Next, the diffusion sheet 11A is disposed on the light guide plate 102, and the reflection sheet 1〇4 is located on opposite sides of the light guide plate 1〇2, respectively. Then, the cymbal 112 and the cymbal 114 are sequentially stacked on the diffusion sheet 110 above the light guide plate 102 to complete the main structure of the backlight module 1 . The light emitted by the light source 106 is scattered by the light guide plate 1〇2 and the reflection sheet 1〇4, and then transmitted through the diffusion sheet U0 to enhance the uniformity of the emitted light. Since the light self-expanding 6 200925683 is emitted, the directivity of the light is very poor. Therefore, after correcting the direction of the light by the prism sheet 丨丨2 and the cymbal 114, the positive luminance of the backlight module 1 can be improved. . In view of the fact that the backlight module 1 requires some optical film to improve the light quality of the backlight module 100, the thickness of the backlight module 1 is not easily thinned. In addition, the price of the film 2/114 and the diffusion film 11 is expensive, and the market is only oligopolist by several manufacturers, so that the cost of the backlight module is not large. ❹
【發明内容】 因此,本發明之目的就是在提供一種導光板結構之製造 方法其係利用#面曝光的方式來進行導光板之表面微結構 的製作’如此一來,可順利在導光板之表面上形成具有傾斜 角度之微結構,不僅可提升導光板之發光效益,更可節省導 光板之製作成本。 社本發明之另一目的是在提供一種導光板結構,其表面微 、,。構具有傾斜角度’因而可大幅增加導光板之光取出效率, 並可提高光源出光之均齊廑,推 J背度進而可提升導光板之發光效 益° 不赞明之又 七、+ 的是在提供—裡导无板結構及其製i 之導光可面將t學膜片之聚光功能的微結構整合製作在導以 光模組之Μ此可減少光學膜片的使用,進而可達到降低支 光模組之厚度以及減低成本的目的。 本發明之再一目的县 ^ ± 提供—種背光模組,其導光; 構表面設有具斜度變化的導光 导光板α 儆、構,並可同時設置有聚光 200925683 . 功能之微結構,因此可省下光學膜片的使用,並可減少光源 ' 的使用里,進而可降低背光模組之成本,更可縮減背光模組 之厚度與重量。 本發明之再一目的是在提供一種液晶顯示器,其背光模 、’且之厚度與重量具可獲得縮減,因此可減輕液晶顯示器之重 量’並降低液晶顯示器之厚度。 根據本發明之上述目的,提出一種導光板結構,至少包 括.一基板,具有相對之第一表面以及第二表面;複數個錐 Φ 狀、‘構,没置在基板之第一表面,其中每一錐狀結構之一侧 面對基板之第一表面具有一傾斜角;以及複數個聚光結構排 列在基板之第二表面。 依照本發明一較佳實施例,上述之基板係透明基板,且 錐狀結構與聚光結構係由透明材料所構成。 根據本發明之目的,提出一種導光板結構之製造方法, 至少包括:提供一透明基板,其中透明基板具有相對之第一 表面以及第二表面;形成一光阻層於透明基板之第一表面 上;提供一光罩於透明基板之第二表面之上,且與光阻層位 於透明基板之相對二側;透過上述光罩對光阻層進行曝光步 驟;以及進行顯影步驟,以移除部分之光阻層而形成複數個 錐狀結構。 依照本發明一較佳實施例,提供透明基板之步驟至少包 括將此透明基板設於一承載底座上,且承載底座具有可調整 曝光角度的功能。此外,進行上述曝光步驟期間,至少包括 使承載底座傾斜一角度,並旋轉此承載底座。 根據本發明之另一目的,提出一種背光模組,至少包 8 200925683 括:一背板;一導光板,設於背板之上,且此導光板至少包 括一透明基板具有相對之第一表面以及第二表面、以及複數 個錐狀結構設置在透明基板之第一表面,其中每一錐狀結構 之一侧面對透明基板之第一表面具有一傾斜角;複數個聚光 結構排列在基板之第二表面;以及至少一光源,設於背板之 側面上。 根據本發明之又一目的,提出一種液晶顯示器至少包 括一背光模組以及一顯示面板。背光模組至少包括:一背 板,一導光板設於背板之上,且此導光板至少包括一透明基 板具有相對之第一表面以及第二表面、以及複數個錐狀結構 設置在透明基板之第一表面,其中每一錐狀結構之一側面對 透明基板之第一表面具有一傾斜角;複數個聚光結構排列在 基板之第二表面;以及至少一光源設於背板之側面上。顯示 面板則設於背光模組之導光板之上。 依照本發明一較佳實施例,上述之背光模組不包括稜鏡 片與擴散片。 【實施方式】 本發明揭露一種導光板結構及其製造方法與應用。為了 使本發明之敘述更加詳盡與完備,可參照下列描述並配合第 2圖至第11圖.之圖式。_ 目前,常見導光板之表面微結構的製作技術包括化學濕 姓刻法(Wet Chemical Etching)、雷射光加工法、機械加工法 與光學微影法(Photolithography)等。化學濕蝕刻法通常只能 蚀刻出圓柱狀微結構,且導光板之基板表面經過化學姓刻 9 ❹ ❹ 200925683 後’呈現粗糙的不規則散射面。因此’利用這樣的方式所製 成之導光板的發光原理係利;^規則面破壞原本之全反射 現象、’藉此達到將光導出導光板之目的。利用此一方法來製 作導光板的成本較低,但出光效率較差。 雷射光加工法係以雷射光來進行導光板表面的圖案定 f矛J用雷射光之南能量對導光板之基板的預設區域進行破 壞性加工,以在導光板之基板表面形成具有所需圖案之微結 構然而’運用雷射光加工法,所需之加工時間較長,且加 工成本尚。 機械加工法係利用不同角度的刀具對導光板之基板圖 案定義,可製作出可任意控制角度與形狀的圖案結構。然 而,因為刀具雕刻圖案微結構的速度會受到機台本身精度與 速度限制,因此將此法應用在大尺寸導光板之製作上會有時 效性的缺點,故機械加工法較適合於小尺寸導光板的製作。 此外,機械加工法在刀具之損耗、以及補償與校正問題都仍 存在相當大之改進空間。 光學微影法則係利用包含光阻塗佈、曝光與顯影組合之 黃光製程技術’在導光板之基板表面上設置微結構。然而, 一般的黃光技術係利用正面曝光方式,因此在光阻吸收的劑 量上’只能製作出側面與導光板之基板表面垂直或者傾斜角 度不大之微結構。但,側面與導光板之基板表面垂直的微結 構對於光的反射效益增加不大。 有鐘於此,本發明提出一種利用光學微影技術來製作導 光板結構’藉由背面曝光的方式,再加上改變曝光劑量與顯 影液濃度’可順利製作出側面對導光板之基板表面具有傾斜 10 200925683 角度較小之微結構’藉以提升導光板之出光效益,並可 板之製作成本。請參照第2圖至第4圖,其緣示: ”,、 較佳實施例的一種導光板結構之製程剖面圖。首 先’提供基板200’其中基板謂具有相對之表面繼SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for fabricating a light guide plate structure which utilizes a surface exposure method to fabricate a surface microstructure of a light guide plate. Thus, the surface of the light guide plate can be smoothly formed. Forming a microstructure with an inclined angle not only improves the luminous efficiency of the light guide plate, but also saves the manufacturing cost of the light guide plate. Another object of the present invention is to provide a light guide plate structure having a micro surface. The structure has an inclined angle', thereby greatly increasing the light extraction efficiency of the light guide plate, and improving the uniformity of the light source, and pushing the J back degree to enhance the luminous efficiency of the light guide plate. - The inner guideless structure and the light guide of the system can be integrated into the light module of the t-segment film to reduce the use of the optical film, thereby reducing the use of the optical film. The thickness of the optical module and the purpose of reducing the cost. Another object of the present invention is to provide a backlight module with light guiding; a light guiding light guide plate having a slope change is provided on the surface of the structure, and a light collecting layer 200925683 can be simultaneously provided. Therefore, the use of the optical film can be saved, and the use of the light source can be reduced, thereby reducing the cost of the backlight module and reducing the thickness and weight of the backlight module. Still another object of the present invention is to provide a liquid crystal display in which the thickness and weight of the backlight module can be reduced, thereby reducing the weight of the liquid crystal display and reducing the thickness of the liquid crystal display. According to the above object of the present invention, a light guide plate structure is provided, comprising at least a substrate having a first surface and a second surface opposite to each other; a plurality of tapered Φ-shaped structures are disposed on the first surface of the substrate, wherein each One side of a tapered structure has an oblique angle to the first surface of the substrate; and a plurality of light collecting structures are arranged on the second surface of the substrate. According to a preferred embodiment of the present invention, the substrate is a transparent substrate, and the tapered structure and the light collecting structure are made of a transparent material. According to an object of the present invention, a method for fabricating a light guide plate structure includes: providing a transparent substrate, wherein the transparent substrate has opposite first and second surfaces; forming a photoresist layer on the first surface of the transparent substrate Providing a photomask over the second surface of the transparent substrate, and the photoresist layer on opposite sides of the transparent substrate; exposing the photoresist layer through the photomask; and performing a developing step to remove a portion The photoresist layer forms a plurality of tapered structures. According to a preferred embodiment of the present invention, the step of providing a transparent substrate includes at least providing the transparent substrate on a carrier base, and the carrier base has a function of adjusting an exposure angle. Further, during the exposing step, at least including tilting the carrier base by an angle and rotating the carrier base. According to another aspect of the present invention, a backlight module is provided, at least package 8 200925683 includes: a back plate; a light guide plate disposed on the back plate, and the light guide plate includes at least one transparent substrate having an opposite first surface And the second surface and the plurality of tapered structures are disposed on the first surface of the transparent substrate, wherein one side of each of the tapered structures has an oblique angle to the first surface of the transparent substrate; and the plurality of light collecting structures are arranged on the substrate a second surface; and at least one light source disposed on a side of the backing plate. According to still another object of the present invention, a liquid crystal display includes at least a backlight module and a display panel. The backlight module includes at least: a back plate, a light guide plate is disposed on the back plate, and the light guide plate includes at least one transparent substrate having opposite first and second surfaces, and a plurality of tapered structures disposed on the transparent substrate a first surface, wherein one side of each of the tapered structures has an oblique angle to a first surface of the transparent substrate; a plurality of light collecting structures are arranged on the second surface of the substrate; and at least one light source is disposed on a side of the backing plate . The display panel is disposed on the light guide plate of the backlight module. According to a preferred embodiment of the present invention, the backlight module does not include a cymbal and a diffusion sheet. Embodiments The present invention discloses a light guide plate structure, a manufacturing method thereof and an application thereof. In order to make the description of the present invention more detailed and complete, reference is made to the following description and in conjunction with the drawings of Figures 2 through 11. _ At present, the fabrication techniques of the surface microstructure of common light guide plates include Wet Chemical Etching, laser light processing, mechanical processing and Photolithography. Chemical wet etching usually only etches cylindrical microstructures, and the surface of the substrate of the light guide plate exhibits a rough irregular scattering surface after being chemically surnamed 9 ❹ ❹ 200925683. Therefore, the principle of light emission of the light guide plate produced by such a method is advantageous; the regular surface destroys the original total reflection phenomenon, thereby achieving the purpose of guiding the light out of the light guide plate. The cost of using this method to fabricate a light guide plate is low, but the light extraction efficiency is poor. The laser light processing method uses laser light to perform patterning on the surface of the light guide plate. The laser uses the south energy of the laser light to destructively process the predetermined area of the substrate of the light guide plate to form a desired surface on the substrate of the light guide plate. The microstructure of the pattern, however, 'using laser light processing, the processing time required is longer, and the processing cost is still. The machining method uses a tool with different angles to define the substrate pattern of the light guide plate, and can create a pattern structure that can control the angle and shape arbitrarily. However, because the speed of the tool engraving pattern microstructure is limited by the precision and speed of the machine itself, the application of this method to the fabrication of large-sized light guide plates has the disadvantage of timeliness, so the machining method is more suitable for small-size guides. The production of light panels. In addition, machining methods still have considerable room for improvement in tool loss, compensation and correction issues. The optical lithography method uses a yellow light process technique comprising a combination of photoresist coating, exposure and development to provide a microstructure on the surface of the substrate of the light guide plate. However, the general yellow light technique utilizes a front side exposure mode, so that only a microstructure having a side surface perpendicular to the substrate surface of the light guide plate or having a small inclination angle can be formed on the dose of the photoresist absorption. However, the microstructure of the side perpendicular to the substrate surface of the light guide plate has little effect on the reflection of light. In view of the above, the present invention provides an optical lithography technique for fabricating a light guide plate structure 'by back exposure, plus changing the exposure dose and developer concentration' to smoothly produce a side surface of the substrate of the light guide plate. Tilt 10 200925683 The microstructure with a small angle 'to improve the light-emitting efficiency of the light guide plate, and the production cost of the board. Referring to Figures 2 to 4, the following is a schematic cross-sectional view of a light guide plate structure of the preferred embodiment. First, a substrate 200' is provided, wherein the substrate has an opposite surface.
面204。基板200係一透明基板。在一示範實施例中,基板 2〇0之材料可為聚甲基丙烯酸甲醋(PMMA)或聚碳酸酯 (PC)。接下來’㈣例如旋塗方式形成高分子結構之光阻 208覆蓋在基板2⑽之表面上。在本發明之—實施例 中,當此導光板結構係作為導光板使用時,光阻層2〇8之材 料係選用透明材料,且光阻層2 〇 8較佳係選用折射係數與基 板200之折射係數差異小之材料:而當此導光板結構係用以 作為導光板製作時翻模用之模仁時,光阻層2〇8之材料可選 用透明材料或不透明材料,且其形狀則根據所要製作的導光 板形狀設計。光阻層208可為負型光阻,亦可為正型光阻。 在本示範實施例中,光阻層208之材料係採用負型光阻。接 著,提供光罩206,並將此光罩206設置在基板2〇〇之表面 202之上,而使光罩2〇6與光阻層2〇8分別位於基板2⑼之 相對二側。光罩206上預設有欲進行轉移之圖案。在本發明 中,光罩206可直接與基板2〇〇之表面2〇2接觸,如第2 圖所示;或者光罩206係位於基板2〇〇之表面2〇2之上方, 但與基板200之表面202之間相隔一段距離而不與基板2〇〇 之表面202接觸。 接下來,如第3圖所示,提供曝光光源21〇於光罩2〇6 之上方’並使此曝光光源210與光罩206位於基板2〇〇之同 一侧。曝光光源210之選擇係取決於所採用之光阻層2〇8。 11 200925683 在本示範實施例中’曝光光源21 〇可選用紫外線光源。隨 後,利用此曝光光源210,而透過光罩206對基板200之另 一侧表面204上的光阻層208進行背面曝光步驟。在此背面 曝光步驟中’曝光光源210所發光之光線經過光罩206與基 板2 0 0後,照射在基板2 0 0之另一側上的光阻層2 〇 8上,以 曝光光阻層208 ’而在光阻層208中形成曝光部分212。利 用光線之側曝現象與光繞射現象,可使較接近曝光光源21〇 之光阻層208區域受到曝光的範圍較為擴大,而使較遠離曝 光光源210之光阻層208區域受到曝光的範圍較小,如此可 使所形成之曝光*部分2 12呈錐狀結構,亦即從基板2〇〇之表 面204朝外漸縮之結構,如第3圖所示。在一示範例中,曝 光步驟之曝光能量較佳可介於實質6〇mJ/cm2與實質 1200mJ/cm2 之間。 在本發明之另一實施例中,如第5圖所示,更可將基板 200設置在具有可調整角度與轉速功能之承載底座214上。Face 204. The substrate 200 is a transparent substrate. In an exemplary embodiment, the material of the substrate 〇0 may be polymethyl methacrylate (PMMA) or polycarbonate (PC). Next, (4) a photoresist 208 which is formed by spin coating to form a polymer structure is overlaid on the surface of the substrate 2 (10). In the embodiment of the present invention, when the light guide plate structure is used as a light guide plate, the material of the photoresist layer 2〇8 is selected from a transparent material, and the photoresist layer 2 〇8 is preferably a refractive index and a substrate 200. The material having a small difference in refractive index: when the light guide plate structure is used as a mold for turning over the light guide plate, the material of the photoresist layer 2〇8 may be made of a transparent material or an opaque material, and the shape thereof is Design according to the shape of the light guide plate to be made. The photoresist layer 208 can be a negative photoresist or a positive photoresist. In the exemplary embodiment, the material of the photoresist layer 208 is a negative photoresist. Next, a photomask 206 is provided, and the photomask 206 is disposed on the surface 202 of the substrate 2, so that the photomask 2〇6 and the photoresist layer 2〇8 are respectively located on opposite sides of the substrate 2 (9). The mask 206 is preliminarily provided with a pattern to be transferred. In the present invention, the photomask 206 can be directly in contact with the surface 2〇2 of the substrate 2, as shown in FIG. 2; or the photomask 206 is located above the surface 2〇2 of the substrate 2, but with the substrate. The surfaces 202 of 200 are separated by a distance and are not in contact with the surface 202 of the substrate 2A. Next, as shown in Fig. 3, the exposure light source 21 is provided above the reticle 2 〇 6 and the exposure light source 210 and the reticle 206 are positioned on the same side of the substrate 2 。. The choice of exposure source 210 depends on the photoresist layer 2〇8 employed. 11 200925683 In the exemplary embodiment, the exposure light source 21 〇 may be an ultraviolet light source. Thereafter, the exposure light source 210 is used to perform a back exposure step on the photoresist layer 208 on the other side surface 204 of the substrate 200 through the mask 206. In the back exposure step, the light emitted by the exposure light source 210 passes through the photomask 206 and the substrate 200, and then is irradiated onto the photoresist layer 2 〇8 on the other side of the substrate 200 to expose the photoresist layer. The exposed portion 212 is formed in the photoresist layer 208. By using the side exposure phenomenon and the light diffraction phenomenon of the light, the range of exposure of the photoresist layer 208 closer to the exposure light source 21〇 is enlarged, and the area of the photoresist layer 208 farther away from the exposure light source 210 is exposed. Smaller, the formed exposure portion 22 can be formed into a tapered structure, that is, a structure that tapers outward from the surface 204 of the substrate 2, as shown in FIG. In an exemplary embodiment, the exposure energy of the exposing step is preferably between substantially 6 〇 mJ/cm 2 and substantially 1200 mJ/cm 2 . In another embodiment of the present invention, as shown in Fig. 5, the substrate 200 can be further disposed on a carrier base 214 having an adjustable angle and a rotational speed function.
此外,在一示範例中,對光阻層208進行背面曝光程序時, 可調整此承載底座214,而使承載底座214在傾斜一角度的 狀態下,進行光阻層208之曝光。在又一示範例中,除了使 承載底座214傾斜外,更可進一步控制此承載底座214,而 使承載底座2i4進行旋轉,而在旋轉的情況下進行光阻層 細之背面曝光步称,如第5圖所示。藉由傾斜及/或旋轉 基板200及其上之光阻層2〇8與光罩2〇8,可改變曝光光源 210對光阻層208之照射路徑,藉此改變光阻層2〇8之光吸 收路徑,進—步達到控制曝光部分218之錐狀結構的斜度。 在本發明之又-些實施例中,如第6圖所示,可在曝光光源 12 200925683 .210與光罩206之間設置透鏡組216(僅繪示其中—透鏡作為 _ =表)藉由透鏡組216的聚光效果可改變曝光光源21〇對 、、阻層2〇8之照射路徑’藉此來達到曝光部分220之侧面的 斜度控制。在第6圖所示之示範實施例中,透鏡組216之個 數與型態可根據製程需求而加以調整,可僅為單—透鏡,亦 可為數個透鏡之組合搭配。 接著,可選擇性地對曝光後之光阻層208進行烘烤,以 使曝光過之光阻結構重新排列。或者,直接對曝光後之光阻 ❹I 2G8進行顯影步驟。在此顯影步驟中,由於本示範實施例 所使用之光阻層2G8為負型光阻,因而此時制顯影液來移 除光阻層扇中未經曝光的部分,而在基板細之表面2〇4 上形成數個錐狀結構222 m圖所示。錐狀結構222之 侧面對基板200之表面2〇4具有一傾斜角卜其中此傾斜角 Θ較佳可介於實f 15。至實質75。之㈤,更佳則可介於實質 1一5至實質45。之間。在一示範例中顯影液可例如為包含 三經基氨基甲炫(THAM)之溶液,且顯影液中所包含之三經 ❹基氨基甲燒的濃度較佳可介於實f Q 5%與實質^篇之 間。待完成顯影步驟後,可選擇性地對錐狀結構加進行硬 烤步驟,以進-步降低錐狀結構222内所含之溶劑量,而完 成導光板結構224之製作。 在本發明之示範實施例中,雜狀結構222可例如圓錐柱 結構或角錐柱結構’例如四角錐柱結構,亦可例如為圓錐结 構或角.錐結構’例如四角錐結構。由於導光板結構224之錐 型結構222之傾斜角0愈小,導光板結構224之出光強度愈 大’且輝度亦可獲得提升,因此在這些示範實施例中,藉由 13 200925683 • 控制曝光能量的大小,來調整錐型結構222之傾斜角0。性 .參照第7A圖與第7B圖,其係繪示在不同曝光能量下所$ 成之曝光部分。在一般曝光能量下(如第7A圖所示)所形成 之曝光部分212a的傾斜角度明顯較過度曝光能量下(如第 7B圖所示)所形成之曝光部分212b的傾斜角度大,此乃導 因於隨著曝光能量的增加,所產生之侧曝現象與光繞射現象 均隨之加強。因此,如第8圖所示,在曝光能量增加下,導 光板結構224之錐狀結構222的傾斜角5»隨之縮小。此外, ❹ 在這些示範實施例中,更利用調整顯影液之濃度的方式來控 =導光板結構224之錐狀結構222的傾斜角θ。當顯影液: 濃度增加時,所形成之錐狀結構222的傾斜角Θ減小。 請參照第9圖’在本發明之另一示範實施例的導光板結 構300中’基板3〇2具有相對之表面3〇4與表面3〇6,其中 基板302係一透明基板,且基板3〇2之材料可例如為聚甲基 丙烯酸曱酯(PMMA)或聚碳酸酯(PC) ^在此實施例中,可先 依上述實施例所提之製程形成複數個錐狀結構308於基板 Q 302之表面304上,其中這些錐狀結構3〇8如同上述實施例 之錐狀結構222,此些錐狀結構3〇8主要用以破壞射入導光 板内部光線的全反射,使得導光板可以由表面3〇2出光。再 利用如同上述實施例所採用之方式形成複數個聚光結構 31〇於基板302之另一表面306上。在本實施例中,錐狀結 構308散佈在基板3〇2之表面3〇4上,而聚光結構31〇為複 數個長條狀聚光結構排列在基板302之表面306上。這些聚 光結構3 10係由透明光阻材料所組成,且聚光結構3 i 〇之材 料可為負型光阻或正型光阻。聚光結構31〇之側面對基板 200925683 302之表面306具有一傾斜角0,其中此傾斜角0較佳可人 於實質15。至實質75。之間,更佳則可介於實質15。至實^ 45之間。在本發明之一實施例中’當此導光板結構係作為 導光板使用時,錐狀結構308與聚光結構31〇之材料係選用 透明材料’且錐狀結構308與聚光結構31〇較佳係選用折射 係數與基板302之折射係數差異小之材料;而當然此導光板 結構300也可以作為導光板製作時翻模用之模仁,當作為導 光板製作翻模用之模仁時,錐狀結構3〇8與聚光結構3ι〇 之材料可選用透明材料或不透明材料,且其形狀則^據所要 製作的導光板形狀設計。 請參照第10圖,在本發明之又一示範實施例的導光板 結構320中,基板322具有相對之表面324與表面326,其 中基板322係一透明基板,且基板322之材料可例如為聚甲 基丙烯酸甲酯或聚碳酸酯。在此實施例中,可先依上述實施 例所提之製程形成複數個錐狀結構328於基板322之表面 324上,其中這些錐狀結構328如同上述實施例之錐狀結構 222或錐狀結構308。再利用如同上述實施例所採用之方式 形成複數個聚光結構330於基板322之另一表面326上。在 本實施例中,錐狀結構328散佈在基板322之表面324上, 而聚光結構330為複數個錐狀聚光結構散佈在基板322之表 面326上。這些聚光結構330係由透明光阻材料所組成,且 聚光結構330之材料可為負型光阻或正型光阻。聚光結構 3 30之側面對基板322之表面326具有一傾斜角,其中此傾 斜角較佳可介於實質15°至實質75。之間,更佳則可介於實 質15°至實質45°之間。 15 200925683 月Π時參照9圖與第10圖’由於導光板結構300與導 . 光板結構320不僅設置有導光微結構,亦即錐狀結構3〇8 與錐狀結構328,且相對於這些導光微結構之導光板結構 3〇〇與導光板結構320之另一表面上更設有具聚光功能之微 結構’亦即聚光結構3 10與聚光結構33〇,因此導光板結構 300與導光板結構32〇兼具導光與聚光功能。 本發明之示範實施例的導光板結構,例如導光板結構 224、導光板結構300與導光板結構320,可應用在背光模 Φ 組或液晶顯示器中。請參照第11圖,其係繪示依照本發明 一實施例之液晶顯示器之裝置示意圖。在此示範實施例中, 液晶顯示器412主要包括顯示面板410以及背光模組400, 其中背光模組400設於顯示面板410之背面,以提供顯示面 板410背光源。背光模組4〇〇主要係由背板402、光源404 與導光板結構320所組成,其中導光板結構320設置在背板 402之上方’而光源404則設置在背板402之側面上且介於 導光板結構320之侧面與背板402之侧面之間。光源404 可例如為冷陰極燈管或發光二極體光條等。此外,若背板 ❹ 402之内側面不具有反射功能,背光模組4〇〇更可設置反射 片406介於導光板結構320與背板402之底面之間*並可在 光源404與背板402之側面之間設置燈罩408以罩覆住相對 於導光板結構320之光源404的另一側,其中反射片406 與燈罩408可將光源404射向背板402底面與側面之光予以 反射。在此背光模組400中,由於所採用之導光板結構320 之相對二表面324與326分別設有導光用之錐狀結構328 與聚光結構330,而使導光板結構320兼具有導光與聚光功 200925683 能,因此將此導光板結構320應用在背光模組4〇〇中時,可 減少甚或免除傳統棱鏡片與擴散片之使用,即可提供同等甚 或較優異之光學表現。而且’在導光板結構32〇所提供之光 學品質明顯優於-般液晶顯示|置下,更可減少光源之使用 數量。In addition, in an exemplary embodiment, when the photoresist layer 208 is subjected to a backside exposure process, the carrier base 214 can be adjusted, and the carrier substrate 214 is exposed to the photoresist layer 208 at an angle of inclination. In another example, in addition to tilting the carrying base 214, the carrying base 214 can be further controlled to rotate the carrying base 2i4, and in the case of rotation, the thin back surface exposure step of the photoresist layer is performed, such as Figure 5 shows. By tilting and/or rotating the substrate 200 and the photoresist layer 2〇8 and the mask 2〇8, the illumination path of the exposure light source 210 to the photoresist layer 208 can be changed, thereby changing the photoresist layer 2〇8. The light absorption path is advanced to control the slope of the tapered structure of the exposed portion 218. In still other embodiments of the present invention, as shown in FIG. 6, a lens group 216 may be disposed between the exposure light source 12 200925683 .210 and the reticle 206 (only the lens is used as the _= table). The concentrating effect of the lens group 216 can change the exposure path of the exposure light source 21, and the resist layer 2 〇 8 to thereby achieve the slope control of the side of the exposed portion 220. In the exemplary embodiment shown in Fig. 6, the number and type of lens groups 216 can be adjusted according to the process requirements, and can be only a single lens or a combination of several lenses. Next, the exposed photoresist layer 208 can be selectively baked to rearrange the exposed photoresist structures. Alternatively, the developing step of the exposed photoresist 2I 2G8 is directly performed. In this developing step, since the photoresist layer 2G8 used in the exemplary embodiment is a negative photoresist, the developing solution is removed at this time to remove the unexposed portion of the photoresist layer fan, and on the thin surface of the substrate 2 A plurality of tapered structures 222 m are formed on 〇4. The side of the tapered structure 222 has an oblique angle to the surface 2〇4 of the substrate 200, wherein the angle of inclination Θ is preferably between fi 15 . To the essence of 75. (5), better can be between the essence of 1 to 5 and the substance of 45. between. In an exemplary embodiment, the developer may be, for example, a solution containing triamylaminomethanone (THAM), and the concentration of the tris-methylcarbamate contained in the developer may preferably be between 5% and 5%. Between the actual ^ articles. After the development step is completed, a hard baking step may be selectively applied to the tapered structure to further reduce the amount of solvent contained in the tapered structure 222 to complete the fabrication of the light guide plate structure 224. In an exemplary embodiment of the invention, the hybrid structure 222 may be, for example, a conical column structure or a pyramidal column structure, such as a quadrangular pyramidal column structure, and may also be, for example, a conical structure or a corner conical structure, such as a quadrangular pyramid structure. Since the smaller the tilt angle 0 of the tapered structure 222 of the light guide plate structure 224, the greater the light intensity of the light guide plate structure 224 and the brightness can be improved, in these exemplary embodiments, by 13 200925683 • controlling the exposure energy The size is adjusted to adjust the tilt angle 0 of the tapered structure 222. Refer to Figures 7A and 7B for the exposed portion of the exposure energy at different exposure energies. The angle of inclination of the exposed portion 212a formed at a normal exposure energy (as shown in Fig. 7A) is significantly larger than the angle of inclination of the exposed portion 212b formed by the excessive exposure energy (as shown in Fig. 7B), which is a guide As the exposure energy increases, the side exposure phenomenon and the light diffraction phenomenon are enhanced. Therefore, as shown in Fig. 8, the inclination angle 5» of the tapered structure 222 of the light guide plate structure 224 is reduced as the exposure energy is increased. Further, in these exemplary embodiments, the inclination angle θ of the tapered structure 222 of the light guide plate structure 224 is controlled by adjusting the concentration of the developer. When the developer: concentration is increased, the inclination angle Θ of the formed tapered structure 222 is decreased. Referring to FIG. 9 'in the light guide plate structure 300 of another exemplary embodiment of the present invention, the substrate 3 〇 2 has opposite surfaces 3 〇 4 and 3 〇 6 , wherein the substrate 302 is a transparent substrate, and the substrate 3 The material of 〇2 can be, for example, poly(meth) methacrylate (PMMA) or polycarbonate (PC). In this embodiment, a plurality of tapered structures 308 can be formed on the substrate Q according to the process of the above embodiment. On the surface 304 of the 302, wherein the tapered structures 3〇8 are like the tapered structure 222 of the above embodiment, the tapered structures 3〇8 are mainly used to destroy the total reflection of the light incident into the light guide plate, so that the light guide plate can Light is emitted from the surface 3〇2. A plurality of concentrating structures 31 are formed on the other surface 306 of the substrate 302 in a manner similar to that used in the above embodiments. In the present embodiment, the tapered structure 308 is interspersed on the surface 3〇4 of the substrate 3〇2, and the condensing structure 31〇 is arranged on the surface 306 of the substrate 302 in a plurality of elongated concentrating structures. These concentrating structures 3 10 are composed of a transparent photoresist material, and the material of the concentrating structure 3 i 可 may be a negative photoresist or a positive photoresist. The side of the concentrating structure 31 is opposite to the substrate 306 of the layer 200925683 302 having an angle of inclination 0, wherein the angle of inclination 0 is preferably human. To the essence of 75. Between the better, it can be between the 15th. To the real ^ 45. In an embodiment of the present invention, when the light guide plate structure is used as a light guide plate, the material of the tapered structure 308 and the light collecting structure 31 is selected from a transparent material and the tapered structure 308 and the light collecting structure 31 are compared. Preferably, the light guide plate structure 300 can be used as a mold for turning over the mold when the light guide plate is made, and when the mold is used as a light guide plate for making a mold for the mold. The material of the tapered structure 3〇8 and the concentrating structure 3ι〇 may be selected from a transparent material or an opaque material, and the shape thereof is designed according to the shape of the light guide plate to be fabricated. Referring to FIG. 10, in a light guide plate structure 320 according to another exemplary embodiment of the present invention, the substrate 322 has an opposite surface 324 and a surface 326, wherein the substrate 322 is a transparent substrate, and the material of the substrate 322 can be, for example, a poly. Methyl methacrylate or polycarbonate. In this embodiment, a plurality of tapered structures 328 may be formed on the surface 324 of the substrate 322 according to the process of the above embodiment, wherein the tapered structures 328 are like the tapered structure 222 or the tapered structure of the above embodiment. 308. A plurality of concentrating structures 330 are formed on the other surface 326 of the substrate 322 in a manner similar to that used in the above embodiments. In the present embodiment, the tapered structure 328 is interspersed on the surface 324 of the substrate 322, and the concentrating structure 330 is interspersed on the surface 326 of the substrate 322 by a plurality of tapered concentrating structures. The concentrating structures 330 are composed of a transparent photoresist material, and the material of the concentrating structures 330 may be a negative photoresist or a positive photoresist. The side of the concentrating structure 3 30 has an angle of inclination to the surface 326 of the substrate 322, wherein the angle of inclination preferably ranges from substantially 15 to substantially 75. More preferably, it can be between 15° and 45°. 15 200925683 Please refer to Fig. 9 and Fig. 10 at the beginning of the month. [Because the light guide plate structure 300 and the light guide plate structure 320 are not only provided with light guiding microstructures, that is, the tapered structures 3〇8 and the tapered structures 328, and relative to these The light guide plate structure 3 of the light guiding microstructure and the other surface of the light guide plate structure 320 are further provided with a condensing function microstructure, that is, the concentrating structure 3 10 and the concentrating structure 33 〇, so the light guide plate structure The 300 and the light guide plate structure 32 have both light guiding and concentrating functions. The light guide plate structure of the exemplary embodiment of the present invention, such as the light guide plate structure 224, the light guide plate structure 300, and the light guide plate structure 320, can be applied to a backlight mode group or a liquid crystal display. Please refer to FIG. 11 , which is a schematic diagram of a device of a liquid crystal display according to an embodiment of the invention. In this exemplary embodiment, the liquid crystal display 412 mainly includes a display panel 410 and a backlight module 400. The backlight module 400 is disposed on the back of the display panel 410 to provide a backlight of the display panel 410. The backlight module 4 is mainly composed of a back plate 402, a light source 404 and a light guide plate structure 320, wherein the light guide plate structure 320 is disposed above the back plate 402, and the light source 404 is disposed on the side of the back plate 402 and Between the side of the light guide plate structure 320 and the side of the back plate 402. Light source 404 can be, for example, a cold cathode lamp or a light emitting diode strip or the like. In addition, if the inner side of the backplane ❹ 402 does not have a reflective function, the backlight module 4 can further be disposed between the light guide plate structure 320 and the bottom surface of the back plate 402* and can be in the light source 404 and the back plate. A lamp cover 408 is disposed between the sides of the 402 to cover the other side of the light source 404 with respect to the light guide plate structure 320. The reflective sheet 406 and the lamp cover 408 can reflect the light source 404 toward the bottom surface and the side surface of the back plate 402. In the backlight module 400, since the opposite surfaces 324 and 326 of the light guide plate structure 320 are respectively provided with a light guiding structure 328 and a light collecting structure 330, the light guiding plate structure 320 has a guiding light. Light and concentrating work 200925683 can, therefore, when the light guide plate structure 320 is applied in the backlight module 4 ,, the use of the conventional prism sheet and the diffusion sheet can be reduced or even eliminated, and the optical performance equivalent or even superior can be provided. Moreover, the optical quality provided by the light guide plate structure 32 is significantly better than that of the general liquid crystal display, and the number of light sources used can be reduced.
由上述本發明較佳實施例可知,本發明之示範實施例的 導光板結構以及導光板模仁之製造方法係利用背面曝光的 方式來進行導光板之表面微結構的製作,因此可順利在導光 板之表面上形成具有傾斜角度之微結構,不僅可提升導光板 之發光效益,更可節省導光板之製作成本。 由上述本發明較佳實施例可知,本發明示範實施例之導 光板結構的表面微結構具有傾斜角度,因而可大幅增加導光 板之光取出效率,並可提高光源出光之均齊度,進=可提升 導光板之發光效益》 由上述本發明較佳實施例可知,在本發明示範實施例之 導光板以及導光板模仁結構及其製造方法中,可將利用製程 方法控制導光板上的微結構之傾斜角度,進而可達到增加背 光模組之出光強度的目的。 曰 由上述本發明較佳實施例可知,在本發明示範實施例之 導光板以及導光板模仁結構及其製造方法中可將光學膜片 之聚光功能的微結構整合製作在導光板之導光面與出光 面,因此可減少光學膜片的使用,進而可達到降低背光模組 之厚度以及減低成本的目的。 由上述本發明較佳實施例可知,本發明示範實施例之背 光模組的導光板結構表面設有具斜度變化料光微結構並 17 200925683 可同時設置有聚光功能之微結構,因此可省下光學膜片的使 .用’並可減少光源的使用量’進而可降低背光模組之成本, 更可縮減背光模組之厚度與重量。 由上述本發明較佳實施例可知,本發明示範實施例之液 晶顯示器的背光模組之厚度與重量具可獲得縮減,因此可減 輕液晶顯示器之重量’並降低液晶顯示器之厚度。 雖然本發明已以一較佳實施例揭露如上,然其並非用以 限定本發明,任何在此技術領域中具有通常知識者,在不脫 ❹離本發明之精神和範圍内,當可作各種之更動與潤飾,因此 本發明之保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖係繪示一般背光模組之架構示意圖。 第2圖至第4圖係繪示依照本發明一較佳實施例的一種 導光板結構之製程剖面圖。 第5圖係緣示依照本發明另一較佳實施例的一種導光 _ 板結構之製作裝置圖。 鲁 第ό圖係繪示依照本發明又一較佳實施例的一種導光 板結構之製作裝置圖。 第7Α圖係 '續·示依照本發明一實施例之在一般曝光能量 下之曝光型態的示意圖。 第7Β圖係緣示依照本發明一實施例之在過度曝光能量 下之曝光型態的示意圖。 第8圖係繪示依照本發明一實施例之曝光能量與曝光 部分之傾斜角度之間的關係曲線圖。 18 200925683 第 9 圖 係繪 示 依照本發 圖 〇 第 10 圖 係繪 示 依照本發 圖 〇 第 11 圖 係繪 示 依照本發 置 示意 圖 〇 明另一實施.例之導光板的立體 明又一實施例之導光板的立體 明一實施例之液晶顯示器之裝 ΟAccording to the preferred embodiment of the present invention, the light guide plate structure and the method for manufacturing the light guide plate mold of the exemplary embodiment of the present invention are used for fabricating the surface microstructure of the light guide plate by means of back exposure, so that the light guide plate can be smoothly formed. Forming a microstructure with an inclined angle on the surface not only improves the luminous efficiency of the light guide plate, but also saves the manufacturing cost of the light guide plate. According to the preferred embodiment of the present invention, the surface microstructure of the light guide plate structure of the exemplary embodiment of the present invention has an oblique angle, thereby greatly increasing the light extraction efficiency of the light guide plate, and improving the uniformity of the light output of the light source. The luminous efficiency of the light guide plate can be improved. According to the preferred embodiment of the present invention, in the light guide plate and the light guide plate mold structure and the manufacturing method thereof, the process method can be used to control the micro light on the light guide plate. The tilt angle of the structure can further increase the light intensity of the backlight module. According to the preferred embodiment of the present invention, in the light guide plate and the light guide plate mold structure of the exemplary embodiment of the present invention and the manufacturing method thereof, the microstructure of the light collecting function of the optical film can be integrated into the guide of the light guide plate. The smooth surface and the light-emitting surface can reduce the use of the optical film, thereby reducing the thickness of the backlight module and reducing the cost. According to the preferred embodiment of the present invention, the light guide plate structure surface of the backlight module of the exemplary embodiment of the present invention is provided with a slope-changing material light microstructure and 17 200925683 can be provided with a concentrating function microstructure at the same time. The optical film can be saved by using 'and reducing the amount of light source used', thereby reducing the cost of the backlight module and reducing the thickness and weight of the backlight module. It can be seen from the above preferred embodiments of the present invention that the thickness and weight of the backlight module of the liquid crystal display of the exemplary embodiment of the present invention can be reduced, thereby reducing the weight of the liquid crystal display and reducing the thickness of the liquid crystal display. The present invention has been described above in terms of a preferred embodiment, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art, without departing from the spirit and scope of the invention, The scope of protection of the present invention is defined by the scope of the appended claims. [Simple description of the drawing] Fig. 1 is a schematic diagram showing the structure of a general backlight module. 2 to 4 are cross-sectional views showing a process of a light guide plate structure in accordance with a preferred embodiment of the present invention. Fig. 5 is a view showing a manufacturing apparatus of a light guiding plate structure according to another preferred embodiment of the present invention. A diagram of a device for fabricating a light guide plate in accordance with still another preferred embodiment of the present invention is shown. Fig. 7 is a schematic view showing an exposure pattern at a general exposure energy according to an embodiment of the present invention. Fig. 7 is a schematic view showing an exposure pattern at an excessive exposure energy according to an embodiment of the present invention. Figure 8 is a graph showing the relationship between the exposure energy and the tilt angle of the exposed portion in accordance with an embodiment of the present invention. 18 200925683 Fig. 9 is a schematic view showing the light guide plate according to another embodiment of the present invention in accordance with the present invention. The mounting of the liquid crystal display of the stereoscopic embodiment of the light guide plate of the embodiment
主要元件符號說明】 1 〇 〇 :背光模組 104 :反射片 108 :燈罩 112 :稜鏡片 π 6 :微結構 202 :表面 206 :光罩 210 :曝光光源 212a :曝光部分 214 :承載底座 218 :曝光部分 222 :錐狀結構 300 :導光板結構 304 :表面 308 :錐狀結構 320 :導光板結構 324 :表面 102 :導光板 10 6 : 光源 110 =擴散片 114 :稜鏡片 200 :基板 204 :表面 208 :光阻層 212 :曝光部分 212b :曝先部分 216 :透鏡組 220 .曝光部分 224 :導光板結構 302 :基板 306 :表面 31〇 :聚光結構 322 :基板 326 :表面 200925683 328 :錐狀結構 400 :背光模組 404 :光源 408 :燈罩 412 :液晶顯示器 必:傾斜角 330 :聚光結構 402 :背板 406 :反射片 410 :顯示面板 0 :傾斜角Main component symbol description] 1 〇〇: backlight module 104: reflective sheet 108: lamp cover 112: cymbal π 6 : microstructure 202: surface 206: reticle 210: exposure light source 212a: exposure portion 214: carrier base 218: exposure Portion 222: Tapered Structure 300: Light Guide Plate Structure 304: Surface 308: Tapered Structure 320: Light Guide Plate Structure 324: Surface 102: Light Guide Plate 106: Light Source 110 = Diffuser Sheet 114: Back Sheet 200: Substrate 204: Surface 208 Photoresist layer 212: exposed portion 212b: exposed portion 216: lens group 220. exposed portion 224: light guide plate structure 302: substrate 306: surface 31: concentrating structure 322: substrate 326: surface 200925683 328: tapered structure 400: backlight module 404: light source 408: lampshade 412: liquid crystal display must: tilt angle 330: concentrating structure 402: back plate 406: reflective sheet 410: display panel 0: tilt angle
2020
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW096147118A TW200925683A (en) | 2007-12-10 | 2007-12-10 | Light guide plate, manufacturing method and application thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW096147118A TW200925683A (en) | 2007-12-10 | 2007-12-10 | Light guide plate, manufacturing method and application thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200925683A true TW200925683A (en) | 2009-06-16 |
Family
ID=44729443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW096147118A TW200925683A (en) | 2007-12-10 | 2007-12-10 | Light guide plate, manufacturing method and application thereof |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200925683A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI461763B (en) * | 2011-12-30 | 2014-11-21 | The fiber guides the light structure and uses the surface of the light source module |
-
2007
- 2007-12-10 TW TW096147118A patent/TW200925683A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI461763B (en) * | 2011-12-30 | 2014-11-21 | The fiber guides the light structure and uses the surface of the light source module |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013163933A1 (en) | Light guide plate with concave microstructure and manufacturing method thereof | |
JP2008102497A (en) | Optical film | |
TW201842384A (en) | Light guiding laminate using anisotropic optical film and planar light source device using the same | |
JPH10241434A (en) | Light directional sheet and directional surface light source using it | |
KR100990074B1 (en) | Inclined exposure lithography system | |
JP2003222727A (en) | Optical control diffusion element by holography | |
KR101182491B1 (en) | Optical film with partially coated structure array and manufacturing method thereof | |
TWI507786B (en) | Display apparatus and side edge type backlight module thereof | |
KR100383033B1 (en) | Backlight device for display | |
KR101273272B1 (en) | Manufacturing method of optical film with hexagonal cell combining pattern and optical film thereby | |
KR20090058679A (en) | Prism sheet and optical film incluing it | |
TW200925683A (en) | Light guide plate, manufacturing method and application thereof | |
JP2005032537A (en) | Direct backlight | |
JP4191498B2 (en) | Optical element, manufacturing method thereof, and liquid crystal display device | |
WO2014190676A1 (en) | Exposure device and exposure method | |
US7258966B2 (en) | Method for manufacturing a diffuser for a backlight module | |
KR101096711B1 (en) | Direct Type Back Light | |
CN100373229C (en) | Backlight module with diffraction optical element | |
JP2005099816A (en) | Optical control diffuser by holography | |
JP2001133604A (en) | Optical diffusion plate, manufacturing method therefor and optical guide device for illumination | |
US20240134225A1 (en) | Optical film, display module, and display screen | |
KR20040076420A (en) | Fabricating Method of light-guide plate | |
TW202427024A (en) | Optical film, display module, and display screen | |
JP2003337209A (en) | Diffusing reflector and its application | |
KR101906906B1 (en) | Mold frame for light guide plate, manufacturing method for light guide plate comprising the same and method for pattern forming using mold frame |