1312312 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種導光板模仁及其製備方法。 【先前技術】 非自發光平面顯示n(如液晶顯示器）之光源來自平面光源 射型液·不器制背光模組，反射麵示器採用前光 ίΐ2光模組係一ί將線形光源（如冷陰極管）或點狀光源（如 X 體）轉換成南党度及面均勻度之平面光源之模組結構。 極管1置/導/1為傳統背光模組之構造：冷陰 3導光板2反射面形成有高密度之微結構 3 V先板2上端設置一下擴散片4，擴 ^ 及—上棱鏡片6，-上擴散片7置於背置下棱鏡片5 進2導光板，導光板反射面上之微結構破壞 ΐΪίί内料之全反射條件，調整出光面方向出射光束之 射光上Γ擴散#具有擴散光束之功能；上下棱鏡#調整出 射先束方向，使得光束主要轉光紐財㈣射H月正出 構大小從毫米到微米級，微έ士禮 束之面均勻度，微結 光調整娜^方向出= 光板微結構微細化需求。 直之夕片擴散片，此為導 導光板2出光面可為鏡面，亦可 功效。若設置v形凹槽微結構，則其述棱鏡片1312312 IX. Description of the Invention: [Technical Field] The present invention relates to a light guide plate mold and a preparation method thereof. [Prior Art] The light source of the non-self-illuminating plane display n (such as liquid crystal display) comes from the flat light source, the liquid type liquid crystal, and the backlight unit, and the reflective surface display unit uses a front light ΐ 2 optical module to connect a linear light source (such as The cold cathode tube) or the point source (such as the X body) is converted into a modular structure of the south party degree and the plane uniformity of the plane uniformity. The pole tube 1 is set/guided/1 is the structure of the conventional backlight module: the reflective surface of the cold cathode 3 light guide plate 2 is formed with a high-density microstructure 3 V first plate 2 is provided with a diffusion sheet 4 at the upper end, and the upper and upper prism sheets are expanded. 6, the upper diffusion sheet 7 is placed on the back of the prism sheet 5 into the 2 light guide plate, the microstructure on the reflective surface of the light guide plate is destroyed by the total reflection condition of the 内ίί internal material, and the light emitted from the light beam in the direction of the light surface is adjusted. The function of diffusing the beam; the upper and lower prisms # adjust the direction of the first beam, so that the beam is mainly converted to New Zealand (4). The size of the H-month is from millimeter to micrometer. The uniformity of the micro-gentle beam is fine. ^Direction = Light plate microstructure miniaturization requirements. Straight slab diffusion sheet, which is the mirror surface of the light guide plate 2, can also be a mirror surface, and can also be effective. If a v-groove microstructure is provided, the prism sheet is described.
面結構導光板加上二片棱鏡片合成之;與傳統出光面鏡 -片棱鏡片。但兩者皆需精確掌控微結構二目5角因·J 1312312 板微結構多樣與尺寸精確化需求。 λ如果將圓形、碗形、橢圓形或半圓形等調整光束面均勻度之 ，結構與ν形、金字塔形等調整光束方向之微結構結合起來，ς一 足光學幾何圖形形成於導光板入光面、出光面或反射面，則可去 除擴散片及棱鏡片，且既能確保導光板出光面方向出射光束之面 ΐϊΐϊΐ度娜又能簡化背光模組結構，但需要精確、易實現微 、…構多樣化、微細化以及成本合理之加工方法。 傳統導光板表面微結構形成方法，主要有以下方式： 1.網版印刷式如美國專利第5,988,826號、美國 Μ99, 994號）於導光板表面用網版印刷油墨或樹脂。其主要缺陷 在於.局限於網版網目的大小，微結構大小在3〇〇微米以上， 狀不穩定，不具有多樣化能力。 ν “2.機械加工式··以成型鑽石刀具加工母模，經電鑄翻模製 -模仁，再利用模仁以塑膠射出或熱壓方式成型導光板。該方法 I控，所成型之微結構之形狀與尺寸，而具有微結構多樣化能 力。，、主要缺陷在於：局限於機械加工之物理極限，其微結 尺寸在數十微米以上’而無法微細化。 3.光阻光刻鱗模式：（如美國專利第5,776,636號、中國 =11042職）、係以光阻塗布於模仁基材上，光阻經曝光、顯影 仁型出微結構之形狀後，再以電鑄翻模方式成型- 再塑膠射出或題方式成型導光板。其主要# 陷在於1雜為複雜，成本高，且不具錢化能力。 、’π上所ϋ於導光板上开>成微細 純 模&其製備方法，用以製備導光板，克服 傳統方法於導絲上形賴崎歡雜轉必要。 兄 【發明内容】 I312312 為解決現有技術非自發光平面顯示裝置中背光模組結構複 二T利於顯示裝置薄型化、傳統方法於導光板上形成之微結構 夕樣化及微細化、且製程複雜、成本高之技術問題’本發明 簡確保出射光亮度及均句i且 目ϊ在於提供-種能於導光板上形成多樣化微 、Q構且衣耘間早、成本低之導光板模仁製備方法。 ，實現第-目的，本發明所採取之技術方錢：提供 樹料包括—表面’該表面上形成有複數微結構，其中該 样複數軸向截面為圓弧形之凹槽及軸向截面為角&之凹 槽，該魏凹槽按預定光學_酬排佈。 々胁之凹 型導該Ϊ2ΓΪ射出、熱壓、^^錢塗佈等方式可批量成 起二狗截面為角形之凸起’該兩種凸 =束，“光==度= ，模仁之製備方S，技有提=導 槽；步驟四，變換不^狀3】域屢印具有—定形狀之第-凹 塵印不同形狀之第二凹1重復+驟於彳ϋ材上另—預定區域 同預定區域騎不同形狀之複數^槽四稷數次’於模仁基材上不 有以下優點：模仁表面之導光板模仁及其製備方法 為圓孤形之凹槽及截面為^形微結構包括軸向截面 槽’5亥杈仁可製備出表面具有 8 1312312 與模仁表面姉狀微結構之導歧，賴結 勾度、光束方向、增強出射光亮度，從而可省去傳 擴散板、棱鏡片等結構，簡化背光模、组，從 型化。本發明所提供之導光板模仁製備方法能實;專 尺寸微細化，並且触鮮、穌低，可實現高速 【實施方式】 法 .下面結合關制本伽所提供之導光錢具及其製備方 下列ϊί閱第十一圖，本發明所提供之導光板模具製備方法包括 步驟ίο，提供-财複數砰形狀壓頭之 J由金剛石等硬度大、耐磨之材料經過精細加工而成:;二 、第四圖、第五圖所示之不同棱 圖 壓頭具有如第一圖、第. 先子》又口十要求自由设計，而不局限於 二根據 圓形之凹槽，柱形_可以壓印㈣、方形、棱形或 形或棱形之球形壓頭可、徑向截面為方 槽。_雜之多樣性決定後續步=^光_孤形之凹 性，從而決定該模仁製備的導光板面Hu之凹槽形狀多樣 服現有技射光刻或網版印刷等加狀多樣性，以克 樣化微結構之缺陷。 扳方法不能形成形狀多 由於凹槽尺寸大，導光板模仁所 寸亦大，導光板上微結構尺寸過大面上微結構尺 要求導光板模仁上之凹槽尺寸儘旦:、〃、示器影像品質，因此 可決定凹槽尺寸，確保凹槽尺寸提供之壓頭尺寸 沒。如苐一圖所示，壓頭 1312312 11見度b以及壓頭長度h可達到5微米以下。而機械加工時， =限限制，絲丨微米時，槽寬將在職米以上。故，本發明 加工方法將解決現有技術中對於槽之長度極短、極= 凹槽、曲線形狀急劇變化之槽之加工暫無合適之方法 供—模仁基材；賴仁紐為硬㈣性材料，- ίίίΐί 優選地，於模仁基材至少-表面上形成符-光 學原理之幾何圖形。 付σ尤 步職）:驅動壓印機’於模仁基材—預定表面上預 ’如第二圖所示，採用第-圖所示之壓頭11於導井柘 、東ί二次成凹槽12。為實現大規模加工，壓印機可選用言 驅：ΐίί速:精7採用活用線性馬達驅動或壓電材: 槽，槽，複數次壓印形成複數凹 數凹样連在—奸度時’反復進行連續之壓印加工，則複 以為i線凹槽，^可度’形成線狀凹槽。線狀凹槽可 為連續線，亦可為斷'缘，均；^包括圓弧曲線及自由曲線），可 或壓印步長而靈活確ί。竹稭由控制壓頭壓印深度、壓印方向 清參閱弟六圖，懕鹿;查綠 之線狀凹槽13，且沪νπ_ντ 了婆17形成複數微小凹槽連接在一起 該步進長度奴得^小，gf_賴如紅騎示。如果 凹凸（如第七圖所示溝^ ^以減少相接壓痕之間接痕產生之 娜，變換不同⑽得到比_之槽。 預定區域壓印不同形狀之第二I碩，於模仁基材預定表面上另一 壓印第二叫時㈣_凹槽壓頭—次騎形成—個微小凹 I312312 ^複數次壓印形成複數凹槽，如果將壓頭步進方向之步進 =得較小，反復進行連續之壓印加卫，職數凹槽連在$ 至!所需槽之長度，形成線狀凹槽。 起奸 f獅’重復倾辦次，_仁基難絲面不同預 槽。===槽。步驟30至步驟5°形成之複數種: 研削由：= 點 相對於光刻技術，本方法製程簡單，所需設備成本低。 ^ 上述方法製備之導光滅仁如第八圖至第十®所示，模 样ίίϊίΐ: 該複數種凹槽係複數鋪面為圓弧:之凹 t截f為跡之凹槽之組合，單_槽為點狀凹槽，複數 ;ϊ狀凹槽，點狀凹槽與線狀凹槽交錯相間排列而开: 第-實施例請參閱第人圖，導光板模仁⑽包括 數微結構，該微結構包括截面為圓弧形之點 上凹槽，該不同點狀凹槽排列形成長短 彼此隔開-疋距離’越靠近模仁⑽之相對另 鄰直線狀凹獅5之間關的距賴小，最後 ° 線上相 成連續直線。該導光板模仁卿備之導光板具有與模^表= 11 1312312 ==及圖案’其一端線狀微結構相鄰兩端之間間 第二實施例請參閱第九圖，導光板模仁2〇〇包括一表面2〇3， ^表，3上形成有複數微結構，包域面為圓弧形之點狀凹槽及 之點狀凹槽，該不同點狀凹槽組合排列形成圓孤曲線 規則排佈，_模仁端具有_中/，=== ==圓心呈放射波狀分佈，越遠離中心，該曲線凹獅越 該導光板模仁200製備之導光板具有與模仁表面 203上所不相對應之微結構及圖案，其中心處可安置光源。 面第ΐ實參閱第十圖’導光板300包括一表面303，該表 =30^上形成有複數微結構，包括截面為圓弧形之點狀凹槽及截面 ，凹槽廳由單個點狀凹槽與線狀凹槽交錯 呈ί射波狀擴散分佈。該導光板模仁 所示相對應之微結構及圖 之凹====形=載面為角形 對其所成㈣光纖缺 本發明實質應不限於上述具體實施方式。 /、有柯效果’ 利用該模仁以塑膠射出、熱壓、滾壓^^^^^^^^^^^^^^ 數轴向截面為圓弧形之凸起及轴向截 μ ”口冓ρ禝 起以與模仁表面光學圖形相同之圖:規^ 光束方向性，使光束從導光^22= 2之凸起能調整 該範圍内光束亮度。 疋刀佈角度内射出，增強 1312312 有以下優導歧壯料製備方法 槽及截面為角 擴散板、棱鏡片等結構，簡化背而可省去傳統背光模組令 型化。本發明所提供之導光板模仁;J方器薄 利申ί :述以i=e方„專 r神所作之等效修飾‘凡⑽ 【圖式簡單說明】 第一圖係一壓頭之示意圖。 弟二圖係於模仁基材上壓印一凹槽之令音 第三圖至第五圖係不同形狀壓頭之示意 第六圖係於模仁基材上形成線狀凹槽之示意圖。 第七圖係第六圖中線狀凹槽沿VII_VII線之心剖面示 第八圖至第十圖分別係模仁基材表面上複 ^The surface structure light guide plate is combined with two prism sheets; and the conventional light-emitting mirror-sheet prism sheet. However, both of them need to accurately control the microstructure and the size of the 5th angle of the J 1312312 board micro-structure and size precision requirements. λ If the uniformity of the beam surface is adjusted by a circle, a bowl, an ellipse or a semicircle, the structure is combined with a microstructure such as a ν-shaped or a pyramid-shaped beam to adjust the direction of the beam, and the optical geometry of the foot is formed in the light guide plate. The smooth surface, the light-emitting surface or the reflective surface can remove the diffusion sheet and the prism sheet, and can ensure the surface of the light-emitting surface in the direction of the light-emitting surface, and can simplify the structure of the backlight module, but it needs to be precise and easy to implement. ...a diversified, micro-finished and cost-effective processing method. Conventional light guide plate surface microstructure formation methods are mainly as follows: 1. Screen printing type, such as U.S. Patent No. 5,988,826, U.S. Patent No. 99,994, which uses a screen printing ink or resin on the surface of a light guide plate. The main drawback is that it is limited to the size of the screen mesh, and the microstructure size is above 3 μm, which is unstable and does not have diversified capabilities. ν "2. Machining type · Machining the master mold with a diamond tool, electroforming the mold - mold core, and then using the mold to plastically or hot-press the light guide plate. The method I control, the formed The shape and size of the microstructure, and the ability to diversify the microstructure. The main drawback is that it is limited to the physical limit of mechanical processing, and its microjunction size is above tens of microns' and cannot be miniaturized. Scale mode: (such as US Patent No. 5,776,636, China=11042), coated with photoresist on the substrate of the mold, the photoresist is exposed and developed into the shape of the microstructure, and then electroformed Mode molding - Re-plastic injection or problem-forming light guide plate. Its main # 陷 is complicated, high cost, and does not have the ability to monetize. 'The π is on the light guide plate open> into a fine pure mold & The preparation method thereof is used for preparing the light guide plate, and overcoming the traditional method for forming the light guide on the guide wire is necessary. Brother [Invention] I312312 To solve the structure of the backlight module in the prior art non-self-luminous planar display device Conducive to display device The invention has the advantages of thinning, traditional method, micro-structure formation and miniaturization formed on the light guide plate, and complicated technical process and high cost. The present invention ensures the brightness and uniformity of the emitted light and the purpose is to provide A method for preparing a light guide plate mold having a diversified micro- and Q-structure and having an early between the clothes and a low cost is realized on the light guide plate. To achieve the first object, the technical method adopted by the present invention is to provide a tree material including a surface A plurality of micro-structures are formed thereon, wherein the plurality of axial cross-sections are arc-shaped grooves and the axial cross-section is a groove of the angle & the Wei groove is arranged according to a predetermined optical yoke. The Ϊ 2 ΓΪ 2 ΓΪ injection, hot pressing, ^ ^ money coating, etc. can be batched into two horns with the cross section of the dog. The two convex = bundle, "light == degree =, the preparation of the mold core S, the technology has = guide groove; step four, the transformation is not 3) the field is repeatedly printed with the shape of the first-concave dust-printing different shapes of the second concave 1 repeat + sudden on the coffin another - the predetermined area is different from the predetermined area The plural of the shape ^ trough four times 'on the mold base material does not have the following advantages: mold kernel The light guide plate mold of the surface and the preparation method thereof are a circular orphaned groove and a cross section of a micro-structure including an axial section groove. The surface has a surface of 8 1312312 and a surface-like microstructure of the mold core. The guiding difference, the hooking degree, the beam direction, and the enhanced light emission brightness, thereby eliminating the structure of the diffusion plate, the prism sheet, and the like, simplifying the backlight mode and the group, and simplifying the pattern. The preparation method of the light guide plate mold provided by the invention can be realized; the special size is fine, and the touch is small, and the touch is low, and the high speed can be realized. The method of the invention is combined with the light guide provided by the company. The preparation method of the light guide plate mold provided by the present invention comprises the steps of ίο, providing a complex number of 压 shape indenter J by diamond and other hard and wear-resistant materials after fine processing: Second, the different ribhead indenters shown in the fourth and fifth figures have the same design as the first figure, the first son, and the tenth requirement, and are not limited to two according to the circular groove, the column The shape _ can be imprinted (four), square, prismatic or shaped or prismatic spherical indenter, the radial section is a square groove. The diversity of _heterogeneous determines the subsequent step = ^ light _ orphaned concave, so as to determine the shape of the groove of the light guide plate surface Hu prepared by the mold core, which is suitable for the prior art lithography or screen printing, etc. Defects in gram-forming microstructures. The drawing method cannot form a shape. Due to the large size of the groove, the size of the light guide plate is also large, and the microstructure of the light guide plate is too large. The microstructure of the light guide plate requires the groove size on the mold core: 〃, 示The image quality, so the groove size can be determined to ensure that the size of the indenter provided by the groove size is not. As shown in the first figure, the indenter 1312312 11 and the indenter length h can reach 5 microns or less. When machining, the limit is limited. When the wire is micron, the groove width will be above the working meter. Therefore, the processing method of the present invention solves the prior art method for processing the groove having a very short length of the groove, the pole = the groove, and the curve shape sharply changing, and there is no suitable method for the die base substrate; the Lai Renxin is hard (four) Material, preferably, the geometry of the optical-optical principle is formed on at least the surface of the mold base material. Fu σ Youbu): drive the embossing machine 'on the mold base substrate - pre-predetermined surface' as shown in the second figure, using the indenter 11 shown in the figure - in the guide well 东, Dong 二次 secondary Groove 12. In order to achieve large-scale processing, the embossing machine can be used with words: ΐίί速: Fine 7 uses a linear motor to drive or piezoelectric material: groove, groove, multiple times embossing to form a complex number of concave numbers attached to the traitorous ' Repeated continuous imprinting process, then the i-line groove, ^ can be 'formed a linear groove. The linear groove can be a continuous line, or a broken 'edge, both; ^ includes a circular curve and a free curve, and can be flexibly determined by the embossing step size. The bamboo straw is controlled by the embossing depth of the indenter, and the direction of the embossing is clear. See the sixth figure, the elk; check the linear groove 13 of the green, and the Shanghai νπ_ντ Pang 17 forms a plurality of tiny grooves connected together. Go ^ small, gf_ Lai Ruhong riding. If the concave and convex (as shown in the seventh figure, the groove ^ ^ is used to reduce the contact between the contact between the indentations, the change is different (10) to obtain the groove of the ratio _. The predetermined area is imprinted with the second shape of the different shape, in the mold base The other surface of the material is embossed on the surface of the second stencil (four) _ groove embossing head - sub-riding formation - a small concave I312312 ^ multiple embossing to form a plurality of grooves, if the stepping direction of the ram step = Small, repeated continuous imprinting and defensive, the number of grooves is connected to the length of the required groove to form a linear groove. Rape lion's repeated dumping times, _Renji difficult silk surface different pre-groove === Slots. Steps 30 to 5° are formed in a plurality of types: Grinding by: = Point Relative to lithography, the method is simple in process and low in equipment cost. ^ The light guide used in the above method is the same as the first Eight to tenth®, the pattern ίίϊίΐ: The plurality of grooves are complex arcs: the concave t-cut f is the combination of the grooves of the trace, the single-slot is a point-like groove, plural; The groove, the dot groove and the linear groove are alternately arranged to be interlaced: For the first embodiment, please refer to the figure of the person, the light guide plate mold (10) includes a micro-structure comprising a groove having a circular arc-shaped cross section, the different dot-like grooves being arranged to form a length and a distance from each other - the closer the distance to the mold core (10), the adjacent adjacent linear lion 5 The distance between the gaps is small, and the last ° line forms a continuous straight line. The light guide plate of the light guide plate has a light guide plate with the die = 11 1312312 == and the pattern 'the end of the linear microstructure between one end In the second embodiment, please refer to the ninth figure, the light guide plate mold 2 includes a surface 2〇3, ^ table, 3 is formed with a plurality of micro-structures, and the wrap-around surface is a circular-shaped dot-shaped groove and Point-like groove, the different point-like grooves are arranged in a row to form a circular orbital regular arrangement, and the _ mold end has _zhong/, === == the center of the circle is arranged in a radial wave, and the farther away from the center, the curved lion The light guide plate prepared by the light guide plate mold 200 has a microstructure and a pattern which are not corresponding to the surface 203 of the mold core, and the light source can be disposed at the center. The surface of the light guide plate 300 includes a surface. 303, the table = 30^ is formed with a plurality of micro-structures, including a dot-shaped groove having a circular arc shape and a section The surface of the groove is formed by a single point-like groove and a linear groove. The corresponding microstructure and the concave shape of the figure are ==== shape=the surface is The invention is not limited to the above specific embodiment. /, there is a effect of the effect of using the mold to plastic injection, hot pressing, rolling ^^^^^^^^^^^^ ^^ The number of axial sections is a circular arc-shaped protrusion and the axial section μ ” ” 禝 禝 以 以 以 以 以 以 : : : : : : : : : : : : 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束 光束The protrusion can adjust the brightness of the beam in the range. The angle of the blade is emitted within the angle of the blade, and the reinforcement 1312312 has the following advantages: the preparation method of the groove and the cross section of the angle diffusion plate, the prism sheet and the like, simplifying the back and eliminating the traditional backlight The module is modularized. The light guide plate mold provided by the present invention; J square device thin Lishen ί: described as i=e square „Special modification made by special gods' (10) [Simple description of the figure] The first figure is a schematic diagram of a pressure head The second figure is the embossing of a groove on the base of the mold. The third to fifth figures are schematic diagrams of different shapes of the indenter. The sixth figure is a schematic diagram of forming a linear groove on the substrate of the mold. The seventh figure is the sixth section of the linear groove along the line VII_VII, showing the eighth to the tenth figure respectively.
槽排列而成之圖案示意圖。 个旧KIHJ 第Η—圖係導光板模仁製備方法流程圖。 第十二圖至第十三圖係傳統背光模組示意圖。 【主要元件符號說明】 壓頭 線狀凹槽 模仁表面 11 13 點狀凹槽 12 導光板模仁 100,200,300 103,203,303 線狀凹槽 105,205,305 13Schematic diagram of the arrangement of the grooves. The old KIHJ Dijon - the flow chart of the method for preparing the light guide plate mold. Twelfth to thirteenth are schematic views of a conventional backlight module. [Main component symbol description] Indenter Linear groove Mold surface 11 13 dot groove 12 Light guide plate die 100,200,300 103,203,303 Linear groove 105,205,305 13