201201082 v 六、發明說明： 【發明所屬之技術領域】 本發明係有關於電容式觸控面板，特別是關於單層透 明導電結構的電容式觸控面板，還有關於降低該電容式觸 控面板金屬導體可見度的方法。 【先前技術】201201082 v VI. Description of the Invention: [Technical Field] The present invention relates to a capacitive touch panel, and more particularly to a capacitive touch panel of a single-layer transparent conductive structure, and also relates to reducing the capacitive touch panel The method of visibility of metal conductors. [Prior Art]
電谷式觸控面板是利用人體與感測電極之間的電流 感應來進行工作的，較常見的電容式觸控面板的結構包括 透明基板、感應電極層以及透明保護層，其中，感應電極 層設置於透明基板上，用於感應觸摸動作並產生感應信 號。當使用者的手指與觸控面板相接觸時，帶走一部分電 荷形成很小的電流，該電流信號經傳輸線傳輸至控制器， 控制器接收並處理而得到觸摸點的位置資訊。 其中 罨谷式觸控面板的感應電極層通常採用透明導 電氧化物薄膜材料（通常採用氧化銅錫ΠΌ)經由錢膜钱 刻形成-定圖案的電極，電極圖案包括不同分佈方式的多 ，感應單元及感應單元之間的連接導線。因而，現有的電 容式觸控面板就其分佈的電極圖案結構而言，可分為單層 ΙΤ0、”構、雙層IT0結構等結構。單層⑽結構是指不同 轴向（坐‘軸）的電極設在同—層上的電極結構雙声 削結構是指不同軸向的電極分設在兩層上的電極結構曰。 [S3. 如圓卜圖2和圖3所示，一種單層ίτ〇結構的電容 式觸控面板1G包括透明基板卜感應電極層2、絕緣層3 4 201201082 和透明保護層4。其中，透明保護層4設於該觸控面板的 最外層’覆蓋於該感應電極層2上。感應電極層2設置於 透明基板1上，該感應電極層2包括彼此絕緣並分別設於 透明基板1同一表面上的兩個軸向上的第一軸向電極21 和第一軸向電極22。絕緣層3包括多個絕緣片31 ,第一 轴向電極21和第二軸向電極22藉由絕緣片31相互隔離。 進一步的，每一個第一軸向電極21包括多個第一感 應單το 211和多個第一軸向導線212，第一軸向導線 連接於同-第-轴向電極21兩相鄰的第一感應單元川 之間。每-個第二感應單元22包括多個第二感應單元221 和多個第二軸向導線222’第二軸向導線222連接於同一 第二軸向電極22兩相鄰的第二感應單元221之間。絕緣 片31設置於第一軸向導線212和第二軸向導線挪之 間，使第-軸向電極21與第二軸向電極22絕緣。 如圖3所示，電容式觸控面板1〇還包括一控制電路 (，未示），用於接收和處理感應信號，經由傳輸線與感 應單元相連接，第一軸向電極21經由第一傳輸線”與控 制電路電性連接，第二軸向電極22經由第二傳輸線㈣ 控制電路電性連接。第一傳輸線23和第二傳輸線Μ通常 採用金屬導線（metal trace)來連接。 如上該電容式觸控面板十，由於金屬導體具有良好的 導電性和較低的價格，在實際生產中，第二軸向導線奶 ，常採用金屬導線（導體）來連接。然而金屬導線具有一 定的寬度’由於金屬導線的反射率較高’與周圍透明材料 5 201201082 之間存在差異，當金屬導線寬度大於1值，人的肉眼就 品外觀缺 可以察覺到明顯的差別’產生金屬導線可視的產 陷。 因而，先前技術所採用改善金屬導線可視問題的方法 有以下兩種·· (!)採取縮減金屬導線的外型尺寸，使其線寬小於一 個很小的值，在實際生絲達成，造成生產良率 鲁下降，而且採用此方法未能完全消除金屬導線可視問題，· ⑵採用透明IT〇作為金屬導線，因連接導線採用與 透明電極同樣的反射率低的材料製成，可形成良好外觀的 產品，但此方法採用了成本較高的材料Πτ〇)，在實際生 產中又而要再增加一道ΙΤ0鍍膜、一道黃光曝光顯影製程 與一道蝕刻剝膜製程，使製造成本增加。 【發明内容】 • 鑑於上述，本發明目的之一在於提供一種降低金屬導 體可見度的電容式觸控面板，具有良好的視覺效果\ 本發明的另一目的是提供一種降低電容式觸控面板 的金屬導體可見度的方法，提高產品的外觀品質，可以在 保證生產製程良率的同時降低成本。 為了達成上述目的，本發明是經由以下技術方案完成 的： •一種電谷式觸控面板，包括一透明基板，一用於感應 .觸摸動作並產生感應信號的感應電極層，該感應電極層包⑶ 6 201201082 括佈設於該透明基板上的至少一金屬導體，其中’該電容 式觸控面板還包括至少一光吸收層以相應地覆設於每一 個該金屬導體上。其中，該金屬導體是金屬導線。 進一步的，該感應電極層包括多個第一軸向電極和多 個第二軸向電極，第一轴向電極與第二軸向電極相互垂直 且彼此絕緣，其中第一軸向電極或第二轴向電極中包括至 少兩個感應單元，該金屬導體連接於兩個感應單元之間。 進一步的，該光吸收層的反射率在80%以下’由低反 • 射率材料鍍膜形成。該低反射率材料包括氮化物、氧化 物、氮化物及氧化物的混合物或深色UV感光有機材料。 其中，該氮化物包括鉻的氮化物（CrN)、鈦的氮化物（TiN) 或锆的氮化物（ZrN)等金屬氮化物，該氧化物包括鉻的 氧化物（CrO)、鈦的氧化物（TiO)或锆的氧化物（ZrO) 等金屬氧化物。該深色UV感光有機材料包括灰色、棕色 或黑色光阻材料。 φ 一種降低電容式觸控面板的金屬導體可見度的方 法，該方法應用在具有金屬導體結構的電容式觸控面板 上，該電容式觸控面板包括設置有感應電極層的透明基 板，其中該感應電極層包括佈設於該透明基板上的至少一 金屬導體，該方法中包括採用低反射材料在金屬導體上鐘 一光吸收層的步驟。其中，該金屬導體是金屬導線。 進一步的，該低反射率材料包括氮化物、氧化物、氮 -化物及氧化物的混合物或深色UV感光有機材料。其中， , 該氮化物包括鉻的氮化物（CrN )、鈦的氮化物（TiN)或 7 201201082 •锆的氮化物（ZrN)等金屬氮化物，該氧化物包括鉻的氧 化物（CrO)、鈦的氧化物（TiO)或锆的氧化物（Zr0)等 金屬氧化物。該深色UV感光有機材料包括灰色、棕色或 黑色光阻材料。 本發明利用鍍膜技術在金屬導線（導體）上增加一黑 色或者暗色的光吸收層，以降低金屬導線的光線反射，進 而降低金屬導線的可見度使其不易被人眼看到，從而使透 明的電容式觸控面板具有良好的視覺效果。這種採用金屬 ® 導線上增加一光吸收層的方法，在實際生產中不需要減小 金屬導線的寬度，製程更容易達成，可降低產品不良率。 此外，該方法與用ΙΤ0代替金屬導線作為連接導線的方法 相比，本發明只需增加一道黃光曝光顯影製程即可，不需 要增加ΙΤ0鍍膜和蝕刻剝膜製程，生產成本可降低。 【實施方式】 以下係提出較佳實施例作為本發明之說明，然而實施 例所提出的内容，僅為舉例說明之用，而繪製之圖式係為 配合說明，並非作為限縮本發明保護範圍之用。再者，實 施例之圖式亦省略不必要之元件’以利清楚顯示本發明之 技術特點。 第一實施例： 如圖4、圖5和圖6所示的一種電容式觸控面板1〇, 包括透明基板1、感應電極層2、絕緣層3和透明保護屬 4。其中，該感應電極層2設置於該透明基板1上，該感 8 201201082 應電極層2包括設置於第—灿— ^ 、弟軸向上的第一軸向電極21和 设置於第二轴向上的第二軸向電極22，第一轴向虛第二 -抽向在相互垂直的方向上，該第-轴向電極21和第二軸 向電極22設置於該透明基板μ同一表面上且彼此絕 緣。該絕緣層3包括多個絕緣片3卜該第一軸向電極21 和該第二軸向電極22藉由絕緣片31相互隔離。該透明保 護層4設於該觸控面板的最外層，覆蓋於該透明基板^ #感應電極層2上，通常採用有機聚合物材料。 _進-步的’該第-軸向電極21包括多個第一感應單 元211和多個第一軸向導線212，該第一軸向導線212連 接於同-第-軸向電極21兩相鄰的第一感應單元211之 間。該第二感應單元22包括多個第二感應單元221和多 個第二軸向導線222，該第二轴向導線222連接於同一第 二轴向電極22兩相鄰的第二感應單元221之間。該絕緣 片31設置於第一軸向導線212和第二軸向導線222之 •間，使第一軸向電極21與第二軸向電極22絕緣。 進一步的，該第二軸向導線222是金屬導線（導體）， 在該第一轴向導線222的表面上鍵有一光吸收層5，該光 吸收層5被分成多個低反射膜片5a 一一地敷設於每一金 屬導線上，如圖4和圖5所示，該光吸收層5可降低光線 反射率，其反射率範圍在80%以下，使金屬導線的可見度 降低。 其中’該光吸收層5是由氮化物、氧化物或其混合物 鑛膜形成的，該氮化物包括金屬氮化物，如CrN、TiN t s] 9 201201082 或ZrN等’該氧化物包括金屬氧化物，如cr〇、Ti〇或 ZrO等。或者，該光吸收層是由包括深色uv(ultravi〇iet) 感光有機材料鍵膜形成的，該深色UV感光有機材料是灰 色、標色或黑色光阻材料。 進一步的，該第一感應單元211、第二感應單元221 和第一轴向導線212採用是透明導電材料製成的，該透明 導電材料是透明氧化銦錫（ΙΤ0)或透明氧化銻錫（AT0) 等透明導電氧化物。該絕緣片31以透明的絕緣材料（通 常採用二氧化矽等材料）製成。 如圖6所示’電容式觸控面板1〇還包括一控制電路 (圖未示），用於接收和處理感應信號。控制電路經由第一 傳輸線23與第一轴向電極21電性連接，並且經由第二傳 輸線24與第二軸向電極22電性連接。該第一傳輸線23 和第一傳輸線24通常採用金屬導線（metai trace)來連 接0 鲁 一種電容式觸控面板金屬導線不可見的製作方法，包 括： 步驟1 :在一透明基板1上採用透明導電材料鍍膜並 餘刻形成多個相間隔並屬於第一軸向（如橫軸）的第一感 應單元211、多個相間隔並屬於第二軸向（如縱軸）的第二 感應單元221及連接於同一軸向上兩相鄰的第一感應單 元211的第一軸向導線212’如圖7所示； 步驟2 :在該第一轴向導線212的表面上採用透明絕 緣材料（如Si02等）覆設絕緣片31，如圖8所示； 10 201201082 •步驟3 :採用導電性佳的金屬材料佈設第二軸向導線 222,以連接同屬於第二轴向上兩相鄰的該第二感應單元 . 221，並且使所設的第二軸向導線222跨越並緊貼絕緣片 31的表面。其中該第二軸向導線222是金屬導線，並在 該金屬導線上鍍一光吸收層5，所形成的結構如圖6所 示，其中，該過程中製作該金屬導線並鍍上光吸收層的方 法有： (1) 在該透明基板1上塗佈一金屬層後，將氮化物 •或氧化物於該金屬層之上鍍一光吸收材料層；再經由黃光 微影將該金屬層與該光吸收材料層一起蝕刻形成該金屬 導線及該光吸收層5，使該光吸收層5被分成多個低反射 膜片5a--敷設於金屬導線上； (2) 在該透明基板上塗佈一金屬層後，將黑色光阻 材料於該金屬層之上塗佈一黑色光阻層；經由黃光微影將 該黑色光阻層顯影曝光形成該光吸收層5， 二^ #分成多個低反射膜片^再將該低反射膜片^作及為收= 遮罩層，將該金屬層蝕刻形成該金屬導線，使每個金屬導 線上均覆蓋有一該低反射膜片5a; (3) 在該透明基板上塗佈一金屬層後，並將該金屬 層蝕刻形成該金屬導線；將黑色光阻材料於該金屬層之上 塗佈-黑色光阻層；再經由黃光微影將該黑色光阻^顯影 曝光形成該光吸收層5,使該光吸收層5形成多個低反射 膜片5a敷設於該金屬導線之上； . 纟驟4:在經上述過程處理的具有感應電極層2的透⑸ 11 201201082 明基板1表面’採用透明有機聚合物材料覆設一透明保護 層4 〇 以上步驟中第一軸向電極和第二轴向電極的數量可 根據實際觸控面板所需的辨析度要求相應增減。其製作方 法亦可採用相反的順序，即：先蝕刻形成一定間距的金屬 導線，同時在金屬導線上形成一低反射膜片（光吸收層）， 此時該低反射膜片的長度小於金屬導線的長度；再於金屬 導線和低反射膜片上覆設一絕緣片；進而再採用透明導電 材料钱刻形成第一導電單元、第一轴向導線和第二導電單 元’並使金屬導線連接於第二轴向上兩相鄰的第二導電單 元。 同理，採用同樣的方法，亦可在第一傳輸線23和第 二傳輸線24上鍍上一光吸收層5來降低金屬導線的可見 度。 第二實施例： • 如圖9、圖10所示的另一種電容式觸控面板1〇，包 括透明基板1、感應電極層2、絕緣層3和透明保護層4。 其中’該感應電極層2設置於該透明基板1上，該感應電 極層2包括設置於第一軸向上的第一軸向電極21和設置 於第一轴向上的第一轴向電極22，第一轴向與第二軸向 相互垂直，該第一軸向電極21和第二軸向電極22設置於 該透明基板1的同一表面上，其中，該第一軸向電極21 包括多個第一感應單元211和多個第一軸向導線212，該 第一軸向導線212連接於同一第一軸向電極21兩相鄰的 12 201201082 第一感應單元211之間；該第二軸向電極22包括多個第 二感應單元221。該絕緣層3上設有多個貫穿孔32，該絕 緣層3的第一表面緊貼於該感應電極層2上，多個第二軸 向導線222設置於該絕緣層3與該第一表面相對的第二表 面’該第一轴向導線222的兩端分別穿過相應的貫穿孔 32 ’並連接該第二軸向電極22上兩相鄰的第二感應單元 221。該透明保護層4設於該觸控面板的最外層，覆蓋於 該透明基板1和該感應電極層2上，通常採用有機聚合物 •材料。 ° 進一步的，該第二軸向導線222是金屬導線，在該第 一轴向導線222的表面上鍍有一光吸收層5，該光吸收層 5被分成多個低反射膜片5a--地敷設於每一金屬導線 上，如圖10所示，該光吸收層5可降低光線反射率，其 反射率範圍在80%以下，使金屬導線的可見度降低。同樣 地’該電容式觸控面板相同的結構層採用與第一實施方式 φ 一樣的材料製成，故不在此贅述。 如圖9所示’該電容式觸控面板1〇還包括一控制電 路（圖未示），用於接收和處理感應信號。控制單元經由第 一傳輸線23與第一轴向電極21電性連接，並且經由第二 傳輸線24與第二軸向電極22電性連接。該第一傳輸線 23和第二傳輸線24也是採用金屬導線（metal trace) 來連接。 本實施方式中的電容式觸控面板的製作方法，與第一 實施方式的製作方法類似，其不同之處僅在於絕緣層的設[s] 13 201201082 置方式不一樣，故不在此贅述。 以上所述僅為本發明之較佳實施例而已，並非用以限 定本發明之申請專利範圍；凡其它未脫離發明所揭示之精 神下所元成之等效改變或修飾，均應包含在下述之申請專 利範圍内。 【圖式簡單說明】 圖1是現有的一種電容式觸控面板結構的截面示意 rm · 圖， 圖2是圖1的a-A剖面示意圖； 圖3是現有的一種電容式觸控面板結構的局部平面 示意圖； 圖4是本發明電容式觸控面板結構第一實施方式的 截面示意圖； 圖5疋圖4的B-B剖面示意圖； 圖6疋本發明電容式觸控面板結構第一實施方式的 • 局部平面示意圖； 圖7是在透明基板的表面上形成有多個第—感應單 疋、第-軸向導線與第二感應單元的局部平面示意圖； 圆8是在第-轴向導線表面上設置絕緣片的局部 面示意圖； 圖9是本發明電容式觸控面板第二實施方式的局部 干面示意圖； 示意圖 圖1〇是本發明電容式難面㈣二實财式的截运 201201082 【主要元件符號說明】 10 電容式觸控面板 1 透明基板 2 感應電極層 21 第一轴向電極 22 第二軸向電極 211 第一感應單元 212 第一軸向導線 221 第二感應單元 222 第二軸向導線 23 第一傳輸線 24 第二傳輸線 3 絕緣層 4 透明保護層 31 絕緣片 32 貫穿孔 5 光吸收層 5a 低反射膜片 15The electric valley type touch panel utilizes current sensing between the human body and the sensing electrode to operate. The structure of the more common capacitive touch panel includes a transparent substrate, a sensing electrode layer and a transparent protective layer, wherein the sensing electrode layer It is disposed on a transparent substrate for sensing a touch action and generating an inductive signal. When the user's finger is in contact with the touch panel, a part of the charge is taken away to form a small current, and the current signal is transmitted to the controller through the transmission line, and the controller receives and processes the position information of the touched point. The sensing electrode layer of the Shibuya touch panel is usually formed by using a transparent conductive oxide film material (usually using copper oxide tin oxide) to form a patterned electrode, and the electrode pattern includes a plurality of different distribution modes, and the sensing unit And the connecting wires between the sensing units. Therefore, the existing capacitive touch panel can be divided into a single layer ΙΤ0, a “structure, a double layer IT0 structure, etc. for a distributed electrode pattern structure. The single layer (10) structure refers to different axial directions (sitting 'axis”. The electrode structure of the electrode disposed on the same layer is a double-layered structure which refers to an electrode structure in which electrodes of different axial directions are arranged on two layers. [S3. As shown in Fig. 2 and Fig. 3, a single layer The capacitive touch panel 1G of the ίτ〇 structure includes a transparent substrate, a sensing electrode layer 2, an insulating layer 3 4 201201082, and a transparent protective layer 4. The transparent protective layer 4 is disposed on the outermost layer of the touch panel to cover the sensing On the electrode layer 2, the sensing electrode layer 2 is disposed on the transparent substrate 1, and the sensing electrode layer 2 includes two axial first electrodes 21 and a first axis which are insulated from each other and respectively disposed on the same surface of the transparent substrate 1. To the electrode 22. The insulating layer 3 includes a plurality of insulating sheets 31, and the first axial electrode 21 and the second axial electrode 22 are isolated from each other by the insulating sheet 31. Further, each of the first axial electrodes 21 includes a plurality of a sensing single το 211 and a plurality of first axial wires 212 The first axial wire is connected between two adjacent first sensing units of the same-first axial electrode 21. Each second sensing unit 22 includes a plurality of second sensing units 221 and a plurality of second axial directions. The second axial wire 222 of the wire 222' is connected between the two adjacent second sensing units 221 of the same second axial electrode 22. The insulating sheet 31 is disposed between the first axial wire 212 and the second axial wire. The first axial electrode 21 is insulated from the second axial electrode 22. As shown in FIG. 3, the capacitive touch panel 1A further includes a control circuit (not shown) for receiving and processing the sensing signal via The transmission line is connected to the sensing unit, the first axial electrode 21 is electrically connected to the control circuit via the first transmission line, and the second axial electrode 22 is electrically connected via the second transmission line (four) control circuit. The first transmission line 23 and the second transmission line Μ are usually connected by a metal trace. As described above, the capacitive touch panel 10 has a good electrical conductivity and a low price in the metal conductor. In actual production, the second axial wire milk is often connected by a metal wire (conductor). However, the metal wire has a certain width 'because the metal wire has a high reflectance' and there is a difference between the surrounding transparent material 5 201201082. When the metal wire width is greater than 1, the human eye can be perceived as a distinct difference. Produces visible metallization of metal wires. Therefore, the methods used in the prior art to improve the visual problem of the metal wires are as follows: (!) The size of the metal wire is reduced, so that the line width is less than a small value, which is achieved in actual raw silk, resulting in good production. The rate is reduced, and this method does not completely eliminate the visible problem of the metal wire. (2) The transparent IT is used as the metal wire, and the connecting wire is made of the same material with low reflectivity as the transparent electrode, which can form a good appearance product. However, this method adopts a relatively high cost material Πτ〇), and in actual production, a ΙΤ0 coating film, a yellow light exposure developing process and an etching stripping process are added to increase the manufacturing cost. SUMMARY OF THE INVENTION In view of the above, one of the objects of the present invention is to provide a capacitive touch panel with reduced visibility of a metal conductor, which has a good visual effect. Another object of the present invention is to provide a metal for reducing a capacitive touch panel. The method of visibility of the conductor improves the appearance quality of the product, and can reduce the cost while ensuring the yield of the production process. In order to achieve the above object, the present invention is accomplished by the following technical solutions: • An electric valley touch panel comprising a transparent substrate, an inductive electrode layer for sensing, touching, and generating an inductive signal, the sensing electrode layer package (3) 6 201201082 includes at least one metal conductor disposed on the transparent substrate, wherein the capacitive touch panel further includes at least one light absorbing layer to be respectively disposed on each of the metal conductors. Wherein, the metal conductor is a metal wire. Further, the sensing electrode layer includes a plurality of first axial electrodes and a plurality of second axial electrodes, the first axial electrodes and the second axial electrodes are perpendicular to each other and insulated from each other, wherein the first axial electrodes or the second The axial electrode includes at least two sensing units connected between the two sensing units. Further, the reflectance of the light absorbing layer is 80% or less 'formed by a low-reflectivity material plating film. The low reflectivity material includes a mixture of nitrides, oxides, nitrides and oxides or a dark UV-sensitive organic material. The nitride includes a metal nitride such as a chromium nitride (CrN), a titanium nitride (TiN) or a zirconium nitride (ZrN), and the oxide includes an oxide of chromium (CrO) and an oxide of titanium. A metal oxide such as (TiO) or a zirconium oxide (ZrO). The dark UV-sensitive organic material comprises a gray, brown or black photoresist material. Φ A method for reducing the visibility of a metal conductor of a capacitive touch panel, the method being applied to a capacitive touch panel having a metal conductor structure, the capacitive touch panel comprising a transparent substrate provided with a sensing electrode layer, wherein the sensing The electrode layer includes at least one metal conductor disposed on the transparent substrate, and the method includes the step of using a low-reflection material to illuminate the light-absorbing layer on the metal conductor. Wherein, the metal conductor is a metal wire. Further, the low reflectivity material comprises a mixture of nitrides, oxides, nitrogen-based compounds and oxides or dark UV-sensitive organic materials. Wherein, the nitride comprises a chromium nitride (CrN), a titanium nitride (TiN) or a metal nitride such as 7 201201082 • zirconium nitride (ZrN), the oxide including chromium oxide (CrO), A metal oxide such as an oxide of titanium (TiO) or an oxide of zirconium (Zr0). The dark UV-sensitive organic material includes a gray, brown or black photoresist material. The invention utilizes a coating technology to add a black or dark light absorbing layer on a metal wire (conductor) to reduce the light reflection of the metal wire, thereby reducing the visibility of the metal wire and making it difficult to be seen by the human eye, thereby making the transparent capacitive type The touch panel has a good visual effect. This method of adding a light absorbing layer to the metal ® wire does not need to reduce the width of the metal wire in actual production, and the process is easier to achieve, which can reduce the product defect rate. In addition, compared with the method of using ΙΤ0 instead of the metal wire as the connecting wire, the present invention only needs to add a yellow light exposure developing process, and it is not necessary to increase the ΙΤ0 plating film and the etching stripping process, and the production cost can be reduced. The following is a description of the preferred embodiments of the present invention. However, the description of the embodiments is for illustrative purposes only, and the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. Use. Further, the drawings of the embodiments also omit unnecessary elements' to clearly show the technical features of the present invention. First Embodiment: A capacitive touch panel 1A shown in FIG. 4, FIG. 5 and FIG. 6 includes a transparent substrate 1, a sensing electrode layer 2, an insulating layer 3, and a transparent protective layer 4. The sensing electrode layer 2 is disposed on the transparent substrate 1. The sensing layer 8 201201082 includes an electrode layer 2 disposed on the first axial electrode 21 and disposed in the second axial direction. The second axial electrode 22, the first axial virtual second-extraction direction is perpendicular to each other, and the first-axial electrode 21 and the second axial electrode 22 are disposed on the same surface of the transparent substrate μ and are mutually insulation. The insulating layer 3 includes a plurality of insulating sheets 3, and the first axial electrodes 21 and the second axial electrodes 22 are isolated from each other by an insulating sheet 31. The transparent protective layer 4 is disposed on the outermost layer of the touch panel and covers the transparent substrate 2, and is usually made of an organic polymer material. The first-axis electrode 21 includes a plurality of first sensing units 211 and a plurality of first axial wires 212 connected to the same-first-axial electrode 21 Between the adjacent first sensing units 211. The second sensing unit 22 includes a plurality of second sensing units 221 and a plurality of second axial wires 222 connected to two adjacent second sensing units 221 of the same second axial electrode 22 between. The insulating sheet 31 is disposed between the first axial wire 212 and the second axial wire 222 to insulate the first axial electrode 21 from the second axial electrode 22. Further, the second axial wire 222 is a metal wire (conductor), and a light absorbing layer 5 is bonded to the surface of the first axial wire 222, and the light absorbing layer 5 is divided into a plurality of low reflection films 5a. A metal layer is applied to each of the metal wires. As shown in FIG. 4 and FIG. 5, the light absorbing layer 5 can reduce the light reflectance, and the reflectance ranges below 80%, so that the visibility of the metal wires is lowered. Wherein the light absorbing layer 5 is formed of a nitride film of a nitride, an oxide or a mixture thereof, the nitride including a metal nitride such as CrN, TiN ts] 9 201201082 or ZrN, etc. 'The oxide includes a metal oxide, Such as cr〇, Ti〇 or ZrO. Alternatively, the light absorbing layer is formed of a key film comprising a dark uv (ultravi〇iet) photosensitive organic material which is a gray, color or black photoresist material. Further, the first sensing unit 211, the second sensing unit 221 and the first axial conductive line 212 are made of a transparent conductive material, which is transparent indium tin oxide (ΙΤ0) or transparent tantalum oxide (AT0). ) a transparent conductive oxide. The insulating sheet 31 is made of a transparent insulating material (usually a material such as ceria). As shown in Fig. 6, the capacitive touch panel 1A further includes a control circuit (not shown) for receiving and processing the sensing signals. The control circuit is electrically connected to the first axial electrode 21 via the first transmission line 23, and is electrically connected to the second axial electrode 22 via the second transmission line 24. The first transmission line 23 and the first transmission line 24 are usually connected by a metal wire (metai trace). The manufacturing method of the metal wire of a capacitive touch panel is invisible, and the method includes the following steps: Step 1: transparent conductive on a transparent substrate 1 Depositing a material and forming a plurality of first sensing units 211 spaced apart from each other and belonging to a first axial direction (such as a horizontal axis), a plurality of second sensing units 221 spaced apart from each other and belonging to a second axial direction (such as a vertical axis) The first axial wire 212' connected to the two adjacent first sensing units 211 in the same axial direction is as shown in FIG. 7; Step 2: using a transparent insulating material (such as SiO 2 or the like) on the surface of the first axial wire 212 Covering the insulating sheet 31 as shown in FIG. 8; 10 201201082 • Step 3: arranging the second axial wire 222 with a conductive metal material to connect the second adjacent to the second axial direction The sensing unit 221 and the second axial wire 222 disposed is spanned and abuts against the surface of the insulating sheet 31. The second axial wire 222 is a metal wire, and a light absorbing layer 5 is plated on the metal wire. The formed structure is as shown in FIG. 6, wherein the metal wire is fabricated and coated with a light absorbing layer. The method is as follows: (1) after coating a metal layer on the transparent substrate 1, depositing a nitride or oxide on the metal layer with a light absorbing material layer; and then using the yellow light lithography to bond the metal layer to the metal layer The light absorbing material layer is etched together to form the metal wire and the light absorbing layer 5, and the light absorbing layer 5 is divided into a plurality of low reflection film sheets 5a--laid on the metal wires; (2) coated on the transparent substrate After a metal layer, a black photoresist material is coated on the metal layer with a black photoresist layer; the black photoresist layer is developed and exposed via yellow lithography to form the light absorbing layer 5, and the plurality of low reflections are divided into two The film is further formed into a mask layer, and the metal layer is etched to form the metal wire so that each metal wire is covered with the low reflection film 5a; (3) After coating a metal layer on the transparent substrate, etching the metal layer Forming the metal wire; coating a black photoresist material on the metal layer - a black photoresist layer; and developing the black light resist to develop the light absorbing layer 5 via a yellow light lithography to form the light absorbing layer 5 A plurality of low-reflection films 5a are laid on the metal wires; Step 4: The surface of the substrate 1 having the sensing electrode layer 2 treated by the above process is coated with a transparent organic polymer material The number of the first axial electrode and the second axial electrode in the above steps may be increased or decreased according to the degree of discrimination required for the actual touch panel. The manufacturing method may also be in the reverse order, that is, first etching a metal wire with a certain interval, and forming a low-reflection film (light absorbing layer) on the metal wire, at which time the length of the low-reflection film is smaller than that of the metal wire. a length; and then an insulating sheet is coated on the metal wire and the low-reflection film; and then the transparent conductive material is used to form the first conductive unit, the first axial wire and the second conductive unit and the metal wire is connected to Two adjacent second conductive units in the second axial direction. Similarly, in the same manner, a light absorbing layer 5 may be plated on the first transmission line 23 and the second transmission line 24 to reduce the visibility of the metal wires. Second Embodiment: Another capacitive touch panel 1A shown in FIGS. 9 and 10 includes a transparent substrate 1, a sensing electrode layer 2, an insulating layer 3, and a transparent protective layer 4. The sensing electrode layer 2 is disposed on the transparent substrate 1. The sensing electrode layer 2 includes a first axial electrode 21 disposed in a first axial direction and a first axial electrode 22 disposed in a first axial direction. The first axial direction and the second axial direction are perpendicular to each other, and the first axial electrode 21 and the second axial electrode 22 are disposed on the same surface of the transparent substrate 1 , wherein the first axial electrode 21 includes a plurality of a sensing unit 211 and a plurality of first axial wires 212 connected between two adjacent 12 201201082 first sensing units 211 of the same first axial electrode 21; the second axial electrode 22 includes a plurality of second sensing units 221. The insulating layer 3 is provided with a plurality of through holes 32. The first surface of the insulating layer 3 is in close contact with the sensing electrode layer 2, and the plurality of second axial wires 222 are disposed on the insulating layer 3 and the first surface. The opposite ends of the first axial wires 222 respectively pass through the corresponding through holes 32 ′ and connect the two adjacent second sensing units 221 on the second axial electrodes 22 . The transparent protective layer 4 is disposed on the outermost layer of the touch panel and covers the transparent substrate 1 and the sensing electrode layer 2, and is usually made of an organic polymer material. Further, the second axial wire 222 is a metal wire, and a surface of the first axial wire 222 is plated with a light absorbing layer 5, and the light absorbing layer 5 is divided into a plurality of low-reflection films 5a-- Laying on each of the metal wires, as shown in FIG. 10, the light absorbing layer 5 can reduce the light reflectance, and the reflectance ranges below 80%, so that the visibility of the metal wires is lowered. Similarly, the same structural layer of the capacitive touch panel is made of the same material as that of the first embodiment, and therefore will not be described herein. As shown in FIG. 9, the capacitive touch panel 1A further includes a control circuit (not shown) for receiving and processing the sensing signals. The control unit is electrically connected to the first axial electrode 21 via the first transmission line 23, and is electrically connected to the second axial electrode 22 via the second transmission line 24. The first transmission line 23 and the second transmission line 24 are also connected by metal traces. The manufacturing method of the capacitive touch panel in the present embodiment is similar to the manufacturing method of the first embodiment, and the only difference is that the arrangement of the insulating layer [s] 13 201201082 is different, and therefore will not be described here. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; any equivalent changes or modifications which are not departing from the spirit of the invention should be included in the following. Within the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional capacitive touch panel structure, FIG. 2 is a cross-sectional view of aA of FIG. 1; FIG. 3 is a partial plan view of a conventional capacitive touch panel structure. 4 is a cross-sectional view of a first embodiment of a capacitive touch panel structure of the present invention; FIG. 5 is a cross-sectional view taken along line BB of FIG. 4; FIG. 6 is a partial plan view of a first embodiment of the capacitive touch panel structure of the present invention. Figure 7 is a partial plan view showing a plurality of first-inductance single-turn, first-axial conductive wires and second sensing unit formed on the surface of the transparent substrate; the circle 8 is provided with an insulating sheet on the surface of the first-axial conductive wire FIG. 9 is a partial dry schematic view of a second embodiment of a capacitive touch panel of the present invention; FIG. 1 is a schematic diagram of a capacitive hard surface of the present invention (four) two solid financial type intercepted 201020102 [Major component symbol description 】 10 capacitive touch panel 1 transparent substrate 2 sensing electrode layer 21 first axial electrode 22 second axial electrode 211 first sensing unit 212 first axial wire 221 A second sensing unit 222 first axial conductor transmission line 23 transmission line 24 a second insulating layer 4 3 transparent protective layer 32 through holes 31 of the insulating sheet 5 light absorbing layer 5a low reflection film 15