201243682 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種觸控面板’特別是有關一種能縮小邊緣 佈線面積之電容式觸控面板及其製造方法。 【先前技術】 現今觸控面板的應用十分廣泛，例如手機、提款機、公共 場合提供資訊或預購之螢幕，其簡單而直接的操作在使用上相 當方便。 觸控面板常用的觸控感應技術包括電阻式（resistive)、電容 式（capacitive)、表面音波式（surface ac〇ustic wave)及紅外線式 (infrared ray)。目前以電阻式及電容式為市佔率較高的觸控面 板。 電阻式觸控面板主要由上下兩層導電層堆疊而成，當被觸 碰時藉由感測上下兩層導電層的電壓變化來得知觸碰位置。電 容式觸控面板係利用排列之透明電極作為感測元件，當被觸碰 時藉由電流變化來得知觸碰位置。 無論是電阻式或是電容式觸控面板，表面可以分為觸碰區 域及邊緣區域’其中觸碰區位於觸控面板之中央區域，以供使 用者觸碰’而邊緣區域包括圍繞中央區域之四周邊緣，用於佈 設感應電壓變化或電容變化的金屬線路。換言之，邊緣區域係 為佈線區域’於其上方會設置一外框覆蓋佈線區域。在追求產 品輕薄短小的目標下，外框越小越好，亦即佈線區域越小越好。 上述佈設於邊緣區域之金屬線路係以網板印刷技術（screen printing technology)將銀膠（Ag paste)形成於觸控面板四周邊緣 所形成。然而受限於目前的網板印刷技術，其線寬（line width) 及線距（space width)至少要100微米（micrometer，μιη)。由於線e201243682 VI. Description of the Invention: TECHNICAL FIELD The present invention relates to a touch panel, and more particularly to a capacitive touch panel capable of reducing an edge wiring area and a method of fabricating the same. [Prior Art] Today's touch panels are widely used, such as mobile phones, cash machines, public information or pre-ordered screens, and their simple and straightforward operation is quite convenient. Touch sensing technologies commonly used in touch panels include resistive, capacitive, surface ac〇ustic wave, and infrared ray. At present, resistive and capacitive type touch panels with high market share. The resistive touch panel is mainly composed of two upper and lower conductive layers stacked, and when touched, the touch position is known by sensing the voltage changes of the upper and lower conductive layers. The capacitive touch panel uses the arranged transparent electrodes as the sensing elements, and when touched, the touch position is known by the current change. Regardless of the resistive or capacitive touch panel, the surface can be divided into a touch area and an edge area 'where the touch area is located in the central area of the touch panel for the user to touch' and the edge area includes the surrounding area The surrounding edge is used to route metal lines that induce voltage changes or capacitance changes. In other words, the edge region is a wiring region where an outer frame is disposed to cover the wiring region. In the pursuit of the product's light and short target, the smaller the outer frame, the better, that is, the smaller the wiring area, the better. The metal wiring disposed in the edge region is formed by forming a silver paste on the peripheral edge of the touch panel by screen printing technology. However, due to current stencil printing technology, the line width and the space width are at least 100 micrometers (micrometer, μιη). Due to line e
Cl·· 4 201243682 寬及線距必須大於100微米，因此金屬線路佔用觸控面板四周 邊緣的面積無法縮小，導致觸控面板中央區域（即觸碰區域）的 面積有所侷限’不利於產品的發展’對於中小型觸控面板的應 用例如手機而言，因手機本身尺寸已經較小，上述金屬線路佔 用面積的問題更加顯得嚴重。 對於電阻式觸控面板而言，佈設於觸控面板四周邊緣的金 屬線路包括四線式、五線式、六線式等，其數量較少，因此佔 用面積的問題較不明顯，然而對於電容式觸控面板來說，其金 屬線路數量為三十二條至六十四條不等，因此佔用面積的問題 比電阻式觸控面板嚴重許多。 疋以，確有需要對上述觸控面板四周邊緣之金屬線路佔用 面積的問題提出解決方法。 【發明内容】 本發明之一目的在於提供一種電容式觸控面板及其製造 方法’其能縮小觸控面板邊緣的佈線面積。 為達到上述目的，根據本發明之一特點係提供一種電容式 觸控面板’包括-基板、-透明導電層、複數個導電材料以及 一導電基材。該基板包括一觸碰區域以及一邊緣區域，其中該 邊緣區域包括兩第一邊緣區域分別形成於該觸碰區域之兩邊 以及一第二邊緣區域連接該兩第一邊緣區域。該透明導電層設 置於该基板之該觸碰區域上及該兩第一邊緣區域上。該等導電 材料设置於該兩第一邊緣區域之該透明導電層上。該導電基材 設置於該兩第一邊緣區4之該等導電材料上及該第二邊緣區 域上。該導電基材包括複數條金屬線路分別透過各該等導電材 料電性耦接至該透明導電層。 根據本發明之另一特點係提供一種電容式觸控面板之製 201243682 造方法，包括： 提供一基板，包括一觸碰區域以及一邊緣區域，其中該邊 緣區域包括兩第一邊緣區域分別形成於該觸碰區域之兩邊以 及一第一邊緣區域連接該兩第一邊緣區域； 設置一透明導電層於該基板之該觸碰區域及該兩第一邊 緣區域上； 設置複數個導電材料於該兩第一邊緣區域之該透明導電 層上；以及 設置一導電基材於該兩第一邊緣區域之該等導電材料上 及該第二邊緣區域上，該導電基材包括複數條金屬線路分別透 過各該等導電材料電性耦接至該透明導電層。 本發明之電容式觸控面板及其製造方法係將與該透明導 電層電性_之金屬線路形成於該導f基材上，而非如習知使 用網板印刷技術直接形成於該透明導電層上，因此該等金屬線 路之線寬及線距不會受到網板印刷技術的限制，而能從網板印 刷技術所需之至丨100微米大幅地降低至20微米，藉此能增 加該觸碰區域的面積或是料料容式馳面板的整體尺寸。 【實施方式】 以下結合附圖對本發明的技術方案進行詳細說明。 4同時參閱第1圖至第3圖’其中第1圖係繪示根據本發 明之電容式觸控面板1之上視圖，第2圖係緣示第i圖中區域 A之放大示意圖’第3圖係繪示第2圖中沿著線段cc’之剖面 圖。 如第3圖所不，根據本發明之電容式觸控面板丨包括一基 板10、一透明導電層20、複數個導電材料3〇以及一導電基材 40如第1圖所示’該基板1〇包括一觸碰區域i 以及一 i 201243682 緣區域，其中該觸碰區域100係供使用者觸碰的區域，該邊緣 區域包括兩第一邊緣區域110分別形成於該觸碰區域1〇〇之兩 - 邊，以及一第二邊緣區域120連接該兩第一邊緣區域110。簡 言之，該兩第一邊緣區域110及該第二邊緣區域120位於該電 容式觸控面板1之邊緣。該基板1〇可以為一玻璃基板或一塑 膠基板。 如第1圖所示，該透明導電層20係設置於該基板1〇之該 觸碰區域100及該兩第一邊緣區域11〇上。請進一步參閱第2 圖，該透明導電層20可以包括但不限制為複數個感測電極列 200橫向排列而成。各感測電極β 2〇〇包括複數個感測電極串 接而成。當該電容式觸控面板丨被觸碰時，對應觸碰之感測電 極列200會產生電流變化以供感測觸碰位置（即座標）。於一實 施例中，該透明電極層20之材質為銦錫氧化物（Indium Oxide，ITO)。 如第1圖及第3圖所示，該等導電材料3〇設置於該兩第 一邊緣區域U0之該透明導電層2〇上。於一實施例中，該等導 t # 3 0 Τ ^ Λ ^ ^ t m (Anisotropic Conductive Film » ACF) 〇 異向性導電膜係由樹脂及導電粒子合成，用於電性_二種不 同材質，其包括防濕、黏著、導電及絕緣的功能。異向性導電 膜具有垂直方向電氣導通且水平方向絕緣的特性。導通原理是 利用導電粒子電性搞接該透明導電層20及該導電基材4〇使之 成為導通g卩僅在垂直方向導通而能避免水平方向導通。 置於：二第二圖及第3圖所示’進一步包括一膠合層6°設 域UG之該透明導電層2G上及該導電基材 導電心1 於結合該兩第一邊緣區域110之該透明導電層及該 201243682 如第1圖至第3圖所示，該導電基材4〇設置於該兩第一 邊緣區域U0之該等導電材料30上及該第二邊緣區域12〇上。 该導電基材40朝向該基板1G之面（即向下的—面）包括複數條 金屬線路400分別透過各該等導電材料3G電性㈣至該透明 導電層20。每-金屬線路權分別對應地電性麵接至每一感測 電極列200。於一實施例中，料電基材4〇可以為一軟性印刷 電路板（Flexible Printed Circuit，Fpc)、一銅箱基板一電錄金 屬箔皮或其他適合之材質。 由於该等金屬線路400係形成於該導電基材4〇上，因此 不會觉到網板印刷技術的限制，其線寬及線距能從習知之 微米降低至20微米’藉此能將第j圖中該第一邊緣區域ιι〇 所需的面積縮小，增加該觸碰區域1〇〇的面積或是縮小整體電 容式觸控面板1的尺寸。 此外，該導電基材4〇進一步包括一延伸部41〇從該第二 邊緣區域120朝向該觸碰區域1〇〇之相反方向延伸，該電容式 觸控面板1進一步包括一控制電路50設置於該延伸部41〇，用 於根據該透明導電層20之電流變化來感測觸碰位置。更明確 而3，當該電容式觸控面板丨被觸碰時，對應觸碰之感測電極 歹J 200會產生電流變化，該電流變化會透過對應之金屬線路4〇〇 傳送至該控制電路50 ,由該控制電路50判斷觸碰位置（即座 標）。 請參閱第4圖，係繪示根據本發明之電容式觸控面板之製 造方法流程圖。 於步驟S400中，提供一基板，包括一觸碰區域以及一邊 緣區域，其中該邊緣區域包括兩第一邊緣區域分別形成於該觸 碰區域之兩邊以及一第二邊緣區域連接該兩第一邊緣區域。 201243682 於步驟S4U)中’設置—透明導電層於該基板之該觸碰區 :齡;亥：第—邊緣區域上。該透明導電層可以包括但不限制為 =DiJ電極列。各感測電極列包括複數個感測電極串接而 成。於-實施例中，該透明電極層2G之材質為麵錫氧化物。 於步驟S420中，設置複數個導電材料於該兩第二邊緣區 二^透明導電層上。於—實_中’該等導電材料可以為異 電膜’使得垂直方向之該透明導電層及該導電基材為導 通，而水平方向則不導通。 ;於步驟S430中，設置一導電基材於該兩第一邊緣區域及 «二邊緣區域上’該導電基材朝向該基板之面（即向下的一面) 包括複數條金屬線路分別透過各該等㈣㈣電性㈣至該 透明導電層。每-金屬線路分別對應地電性耦接至每一感測電 ，列。於一實施例中，該導電基材可以為一軟性電路板、-銅 箔基板、一電鍍金屬箔皮或其他適合之材質。 —該導電基材進-步包括一延伸部從該第二邊緣區域朝向 違觸碰區域之相反方向延伸，該電容式觸控面板進—步包括一 控制電路3又置於邊延伸部’用於根據該透明導電層之電流變化 來感測觸碰位置。更明確而言，當該電容式觸控面板被觸碰 時，對應觸碰之感測電極列會產生電流變化，該電流變化會透 過.子應之金屬線路傳送至該控制電路，由該控制電路判斷觸碰 位置（即座標）。 於-實施例中，於上述步驟S42〇之後進一步包括：設置 -膠合層於該兩第-邊緣區域之該透明導電層上及該導電基 材之間’用於結合該兩第-邊緣區域之該透明導電層及該導電 基材。 製造方法係將與該透 根據本發明之電容式觸控面板及其 201243682 明導電層電性輕接之金屬線路形成於該導電基材上，而非習知 使用網板印刷技術直接形成於該透明導電層上，因此該等金屬 線路之線寬及線距不會受到網板印刷技術的限制，而能從網板 印刷技術所需之至少微米大幅地降低至微米。由於該電容式觸 控面板之該等金屬線路多達數十條，因此該第一邊緣區域可以 縮小的面積非常可觀，藉此能增加該觸碰區域的面積或是縮小 該電容式觸控面板的整體尺寸。 綜上所述，雖然本發明已用較佳實施例揭露如上，然其並 非用以岐本發明，本發明所屬技術領域中具有通常知識者， 在不脫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圖係繪示根據本發明之電容式觸控面板之上視圖； 第2圖係繪示第丨圖中區域a之放大示意圖； 第3圖係繪示第2圖中沿著線段cc，之剖面圖；以及 第4圖係繪示根據本發明之電容式觸控面板之製造方法流 〇 【主要元件符號說明】 1 電容式觸控面板 10 基板 20 透明導電層 30 導電材料 40 導電基材 50 控制電路 60 膠合層 201243682 100 觸碰·區域 110 第一邊緣區域 120 第二邊緣區域 200 感測電極列 400 金屬線路 410 延伸部 A 區域 CC5 線段 S400-S430 步驟Cl·· 4 201243682 The width and line spacing must be greater than 100 microns. Therefore, the area occupied by the metal line occupying the periphery of the touch panel cannot be reduced, resulting in a limitation of the area of the central area of the touch panel (ie, the touch area), which is not conducive to the product. Development 'For small and medium-sized touch panel applications such as mobile phones, the size of the above-mentioned metal lines is even more serious because the size of the mobile phone itself is already small. For the resistive touch panel, the metal lines disposed on the peripheral edges of the touch panel include a four-wire type, a five-wire type, a six-wire type, etc., and the number thereof is small, so the problem of occupying an area is less obvious, but for the capacitor For touch panels, the number of metal lines varies from 32 to 64. Therefore, the problem of occupied area is much more serious than that of resistive touch panels. Therefore, there is a need to solve the problem of the metal line footprint of the peripheral edge of the above touch panel. SUMMARY OF THE INVENTION An object of the present invention is to provide a capacitive touch panel and a method of fabricating the same that can reduce the wiring area of the edge of the touch panel. In order to achieve the above object, according to a feature of the present invention, a capacitive touch panel includes a substrate, a transparent conductive layer, a plurality of conductive materials, and a conductive substrate. The substrate includes a touch area and an edge area, wherein the edge area includes two first edge areas respectively formed on two sides of the touch area and a second edge area connecting the two first edge areas. The transparent conductive layer is disposed on the touch region of the substrate and on the two first edge regions. The conductive materials are disposed on the transparent conductive layer of the two first edge regions. The conductive substrate is disposed on the electrically conductive material of the two first edge regions 4 and on the second edge region. The conductive substrate includes a plurality of metal lines electrically coupled to the transparent conductive layer through the respective conductive materials. According to another feature of the present invention, a method for manufacturing a capacitive touch panel is provided. The method includes: providing a substrate including a touch area and an edge area, wherein the edge area includes two first edge areas respectively formed on Two sides of the touch area and a first edge area are connected to the two first edge areas; a transparent conductive layer is disposed on the touch area of the substrate and the two first edge areas; and a plurality of conductive materials are disposed on the two a conductive layer on the transparent conductive layer of the first edge region; and a conductive substrate on the conductive material and the second edge region of the first edge region, the conductive substrate comprising a plurality of metal lines respectively The conductive materials are electrically coupled to the transparent conductive layer. The capacitive touch panel of the present invention and the method of manufacturing the same are formed on the conductive material substrate with the metal wiring of the transparent conductive layer, instead of being directly formed on the transparent conductive using a screen printing technique as is conventionally known. On the layer, therefore, the line width and line spacing of the metal lines are not limited by screen printing technology, and can be greatly reduced from 所需100 μm to 20 μm required for screen printing technology, thereby increasing the The area of the touch area or the overall size of the material-capacity panel. [Embodiment] Hereinafter, the technical solution of the present invention will be described in detail with reference to the accompanying drawings. 4 Referring to FIG. 1 to FIG. 3 together, FIG. 1 is a top view of the capacitive touch panel 1 according to the present invention, and FIG. 2 is a schematic enlarged view of the area A in the second figure. The figure shows a cross-sectional view along line cc' in Figure 2. As shown in FIG. 3 , the capacitive touch panel 根据 according to the present invention includes a substrate 10 , a transparent conductive layer 20 , a plurality of conductive materials 3 , and a conductive substrate 40 as shown in FIG. 1 . The 〇 includes a touch area i and an i 201243682 edge area, wherein the touch area 100 is an area for the user to touch, and the edge area includes two first edge areas 110 respectively formed in the touch area 1 Two first edges, and a second edge region 120 connect the two first edge regions 110. In short, the two first edge regions 110 and the second edge regions 120 are located at the edge of the capacitive touch panel 1. The substrate 1 can be a glass substrate or a plastic substrate. As shown in Fig. 1, the transparent conductive layer 20 is disposed on the touch region 100 of the substrate 1 and the first edge regions 11A. Referring to FIG. 2 further, the transparent conductive layer 20 may include, but is not limited to, a plurality of sensing electrode columns 200 arranged laterally. Each of the sensing electrodes β 2 〇〇 includes a plurality of sensing electrodes connected in series. When the capacitive touch panel is touched, the sensing electrode array 200 corresponding to the touch generates a current change for sensing the touch position (ie, the coordinate). In one embodiment, the transparent electrode layer 20 is made of Indium Oxide (ITO). As shown in Figs. 1 and 3, the conductive materials 3 are disposed on the transparent conductive layer 2'' of the first edge regions U0. In one embodiment, the isotope conductive film is synthesized from a resin and a conductive particle, and is used for electrical _ two different materials. It includes functions of moisture resistance, adhesion, electrical conductivity and insulation. The anisotropic conductive film has a property of being electrically conducted in the vertical direction and insulating in the horizontal direction. The conduction principle is that the transparent conductive layer 20 and the conductive substrate 4 are electrically connected by conductive particles to make conduction, and conduction in the vertical direction can be avoided to avoid horizontal conduction. Placed on the second transparent layer 2G and the transparent conductive layer 2G of the bonding layer 6° and the conductive substrate 1 to be bonded to the first edge regions 110 The transparent conductive layer and the 201243682 are as shown in FIGS. 1 to 3, and the conductive substrate 4 is disposed on the conductive material 30 and the second edge region 12A of the first edge regions U0. The conductive substrate 40 faces the surface of the substrate 1G (i.e., the downward facing surface) includes a plurality of metal lines 400 electrically transmitted through the conductive materials 3G to the transparent conductive layer 20, respectively. Each of the metal line weights is electrically connected to each of the sensing electrode columns 200, respectively. In one embodiment, the electrical substrate 4 can be a Flexible Printed Circuit (Fpc), a copper box substrate, an electroless metal foil, or other suitable material. Since the metal lines 400 are formed on the conductive substrate 4, the limitation of the screen printing technology is not recognized, and the line width and the line pitch can be reduced from the conventional micron to 20 micrometers. In the figure, the area required for the first edge area is reduced, and the area of the touch area is increased or the size of the entire capacitive touch panel 1 is reduced. In addition, the conductive substrate 4 further includes an extending portion 41 extending from the second edge region 120 toward the opposite direction of the touch region 1 , the capacitive touch panel 1 further including a control circuit 50 disposed on The extension portion 41 is configured to sense a touch position according to a change in current of the transparent conductive layer 20. More specifically, when the capacitive touch panel is touched, the corresponding sensing electrode 歹J 200 generates a current change, and the current change is transmitted to the control circuit through the corresponding metal line 4〇〇. 50. The control circuit 50 determines the touch position (i.e., coordinates). Please refer to FIG. 4, which is a flow chart showing a method of manufacturing a capacitive touch panel according to the present invention. In step S400, a substrate is provided, including a touch area and an edge area, wherein the edge area includes two first edge areas respectively formed on two sides of the touch area and a second edge area connecting the two first edges region. 201243682 In step S4U), the transparent conductive layer is disposed on the touch region of the substrate: age; the sea: the first edge region. The transparent conductive layer may include, but is not limited to, a =DiJ electrode column. Each of the sensing electrode columns includes a plurality of sensing electrodes connected in series. In the embodiment, the transparent electrode layer 2G is made of tin oxide. In step S420, a plurality of conductive materials are disposed on the two second edge regions of the transparent conductive layer. The conductive material may be an isoelectric film such that the transparent conductive layer and the conductive substrate in the vertical direction are conductive, and the horizontal direction is not conductive. In step S430, a conductive substrate is disposed on the two first edge regions and the "two edge regions", the conductive substrate faces the substrate (ie, the downward side), and the plurality of metal lines respectively pass through the respective And (4) (4) electrical (four) to the transparent conductive layer. Each of the metal lines is electrically coupled to each of the sensing electrodes and columns. In one embodiment, the conductive substrate can be a flexible circuit board, a copper foil substrate, a plated metal foil or other suitable material. The conductive substrate further comprises an extension extending from the second edge region in a direction opposite to the collision zone, the capacitive touch panel further comprising a control circuit 3 and an edge extension The touch position is sensed according to a change in current of the transparent conductive layer. More specifically, when the capacitive touch panel is touched, a current change is generated in the sense electrode column corresponding to the touch, and the current change is transmitted to the control circuit through the metal line of the sub-control. The circuit determines the touch position (ie, the coordinates). In the embodiment, after the step S42, the method further includes: providing a glue layer on the transparent conductive layer between the two first edge regions and the conductive substrate for combining the two first edge regions The transparent conductive layer and the conductive substrate. The manufacturing method is formed on the conductive substrate with the metal circuit electrically connected to the capacitive touch panel according to the present invention and its 201243682 conductive layer, instead of being directly formed on the conductive printing technique using the screen printing technology. The transparent conductive layer is such that the line width and line spacing of the metal lines are not limited by screen printing techniques and can be substantially reduced from micron to micron required for screen printing techniques. Since the number of the metal lines of the capacitive touch panel is up to several, the area of the first edge area can be reduced, thereby increasing the area of the touch area or reducing the capacitive touch panel. The overall size. In the above, although the present invention has been disclosed in the above preferred embodiments, the present invention is not intended to be used in the scope of the present invention. Various modifications and adaptations are made, and the scope of the present invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top view of a capacitive touch panel according to the present invention; FIG. 2 is an enlarged schematic view of a region a in the second diagram; FIG. 3 is a second diagram The cross-sectional view along the line cc; and the fourth figure illustrate the manufacturing method of the capacitive touch panel according to the present invention. [Main component symbol description] 1 capacitive touch panel 10 substrate 20 transparent conductive layer 30 Conductive material 40 Conductive substrate 50 Control circuit 60 Glue layer 201243682 100 Touch area 110 First edge area 120 Second edge area 200 Sensing electrode column 400 Metal line 410 Extension A Area CC5 Line segment S400-S430 Step