201101160 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種光穿透觸控面板，特別係關於一種 具有電容電路之觸控面板。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-transmitting touch panel, and more particularly to a touch panel having a capacitor circuit. [Prior Art]
觸控面板已被廣泛應用於家庭用品、通訊裝置及電子 資訊裝置等領域。通常觸控面板之應用係作為個人數位助 理（PDA)、電子產品及遊戲機等輸入介面。目前觸控面板和 顯示幕之整合趨勢可允許使用者以手指或接觸筆選取面板 上顯示之代表圖像（icon)，如此可使個人數位助理、電子產 品及遊戲機執行喜好之功能。此種觸控面板亦應用於公共 資訊查詢系統，可以提供公眾有效率之操作系統。 傳統觸控面板包含一透明基板，該透明基板具有複數 個感測塾所構成之一表面’該等分佈之感測墊係用於感測 使用者以手指或接觸筆觸摸所造成之訊號，以進行輸入或 控制。該感測墊係由透明導電薄膜所構成，例如：氧化銦 錫（ITO)，使用者可以觸摸顯示於顯示幕上特定位置之對應 透明導電薄膜，即可有效操作該裝置。 為能有效偵測使用者以手指或接觸筆觸摸面板之正確 位置，有很多種觸控面板之技術被發展出來。如圖1A所示 ’―種光穿透觸控面板H)包含一透明基、複數個橋接 線12、一絕緣層13及一透明導電層14。該透明導電層14覆 蓋該透明基板11之上表面，並包含複數個第一單元、複 數個第二單元142及複數個連接線143。該複數個第一單元 201101160 141及該複數個第二單元142係交錯佈置，且各第一單元141 被四個第二單元142圍繞。各該複數個連接線143分別連接 相鄰第二單元142。該絕緣層13更包含複數個絕緣區域131 ’該複數個絕緣區域131分別覆蓋該複數個連接線143 ^該 複數個橋接線12分別設於該複數個絕緣區域131上，及分別 連接相鄰第一單元14b另有複數個金屬導線15係設於透明 導電層14之周側，藉由該複數個金屬導線15使得第一單元 141及第二單元142之各橫向及縱向連接得以將感測之訊號 〇 傳送至外部。 然而，因為該複數個橋接線12及複數個金屬導線15均 為可反射光線之金屬材料，故當使用光穿透觸控面板1〇點 選或操控下方顯示螢幕時，該橋接線12及金屬導線15會反 射光線形成亮帶或亮線，亦即造成使用者觀看顯示螢幕之 困擾或視覺上不舒服。 此外’有習知技術在光穿透觸控面板1〇上加上透鏡（ lens )’並在透鏡和光穿透觸控面板1〇間置入一黑色矩陣（ black matrix)，而該黑色矩陣恰好遮蔽周圍之金屬導線所 在之區域’故能擋住集中之複數個金屬導線形成反射光之 亮帶。但透鏡及光穿透觸控面板1〇之透明基板丨丨皆使用相 同之玻璃材料製成，因此不僅會耗費材料及增加製造步驟 ，並也會吸收顯示螢幕更多光線造成影像變暗。 因此，市場上需要一種觸控面板能克服上述習知觸控 面板所具有之缺點，並仍能維持較低之製造成本。 【發明内容】 201101160 本發明係提供一種光穿透觸控面板，該觸控面板之橋 接線會和光遮蔽層重疊，因此於感測區内不會有刺眼之亮 點或亮線產生。 综上所述’本發明揭露一種電容式觸控面板包含一透 明基板、一光遮蔽層及一電容感應電路元件。該電容感測 電路元件係設於該透明基板之一表面上方，包含一感測區 及複數個金屬導線。該感測區包含複數個金屬橋接線。該 複數個金屬導線係位於該感測區之周圍，並和該感測區電 性相連接。該光遮蔽層之面積係和該複數個金屬橋接線垂 直重疊。 本發明之一範例係該光遮蔽層係直接設於該透明基板 之一表面，該電容感應電路元件再直接疊置於該光遮蔽層 上。 本發明之一範例係該光遮蔽層係設於該透明基板之一 表面上，該電容感應電路元件係設於該透明基板之另一表 面上。 本發明之一範例係該光遮蔽層係直接設於該感測區中 複數個金屬橋接線之表面。 【實施方式】 圖2 A係本發明一實施例之觸控面板之刳面示意圖。如 圖2A所示，一電容式觸控面板20包含一透明基板21、一絕 緣層23、一光遮蔽層25及一電容感應電路元件26»該電容 感測電路元件26係設於該透明基板21之第一表面211上，其 包含一感測區262及複數個金屬導線263。該感測區262包含 201101160 複數個金屬橋接線264及一透明導電層265。複數個金屬導 線263係位於該感測區262之周圍，並和該感測區262電性相 連接。該光遮蔽層25係直接設於該透明基板之第一表面211 上’亦即係夾設於該電容感測電路元件26和該透明基板21 之間’並光遮蔽層25之面積係和該複數個金屬橋接線264 垂直重疊。因此，使用者由該透明基板21之第二表面212 觀看及使用該電容式觸控面板20時，光遮蔽層25會遮住該 金屬橋接線264 ’如此會消除或降低該金屬橋接線264反射 光線之問題，也就是該感測區262内不會有亮點或亮線產生 〇 該透明基板21之材料係玻璃或透明高分子板材，例如 :聚碳酸酯（PC)及聚氣乙烯（PVC)。該透明導電層265及橋 接線264之材料係氧化姻錫（ITO)、氧化銘辞（AZO)或氧化铜 鋅（IZO)。該金屬橋接線264及金屬導線263之材料係鉻（Cr) 或鉬/鋁/鉬（Mo/Al/Mo)之複合金屬層。該光遮蔽層25之材料 係氧化鉻（CrO)或高分子的不透明或半透明材料。該絕緣層 23之材料係一透明高分子材料，例如：一光阻材料。 圖2B係本發明另一實施例之觸控面板之刳面示意圖。 如圖2B所示，一電容式觸控面板20'包含一透明基板21、一 絕緣層23、一光遮蔽層25'及一電容感應電路元件26。該電 容感測電路元件26係設於該透明基板21之第一表面211上 ，其包含一感測區262及複數個金屬導線263。該感測區262 包含複數個金屬橋接線264及一透明導電層265 »複數個金 屬導線263係位於該感測區262之周圍，並和該感測區262 201101160 電性相連接。該光遮蔽層25'係直接設於該透明基板之第一 表面211上，亦即係夾設於該電容感測電路元件26和該透明 基板21之間，並光遮蔽層25'之面積係和該複數個金屬橋接 線264及該複數個金屬導線263垂直重疊。因此，使用者由 該透明基板21之第二表面212觀看及使用該電容式觸控面 板20時，光遮蔽層25會遮住該金屬橋接線264及該複數個金 屬導線263，如此會消除該金屬橋接線264及該複數個金屬 導線27會反射光線之問題，也就是不會有亮點、亮線或或 亮帶產生。相較於圖2A，圖2B中光遮蔽層25’係增加電容式 觸控面板20'之周圍該複數個金屬導線263之遮蔽面積。 圖3係本發明一實施例之觸控面板之剖面示意圖。相較 於圖2A，圖3中電容式觸控面板30之光遮蔽層25係設於該電 容感測電路元件26内，亦即夾設於該複數個金屬橋接線264 及該透明導電層265之間’但同樣可以達到避免該複數個金 屬橋接線264反射光線之效果。 圖4係本發明一實施例之觸控面板之剖面示意圖。電容 式觸控面板40之光遮蔽層25係設於該複數個金屬橋接線 264上方，亦即介於該絕緣層23及該複數個金屬橋接線264 之間。使用者較適合由該絕緣層23所在之一端，觀看及操 該電容式觸控面板40。 圖5 A係本發明一實施例之觸控面板之剖面示意圖。相 較於前述各實施例’電容式觸控面板5〇之光遮蔽層25係設 於該透明基板21之第二表面212,亦即和該電容感測電路元 件26係設於該透明基板21之相對之表面。同樣可以達到避 201101160 免該複數個金屬橋接線214反射光線之效果。 相較於圖5A’圖5B之電容式觸控面板5〇，之光遮蔽層 25'係增加電容式觸控面板50’之周圍該複數個金屬導線263 之遮蔽面積，如此會消除該金屬橋接線264及該複數個金屬 導線263會反射光線之問題，也就是不會有亮點、亮線或或 亮帶產生。 本發明之技術内容及技術特點已揭示如上，然而熟悉 本項技術之人士仍可能基於本發明之教示及揭示而作種種 不责離本發明精神之替換及修飾。因此，本發明之保護範 圍應不限於實施例所揭示者’而應包括各種不背離本發明 之替換及修飾，並為以下之申請專利範圍所涵蓋。 【圖式簡要說明】 圖1A係一習知觸控面板之示意圖； 圖1B係沿圖1A中線1 -1之剖面圖； 圖2A係本發明一實施例之觸控面板之剖面示意圖； 圖2B係本發明另一實施例之觸控面板之剖面示意圖； 圖3係本發明一實施例之觸控面板之剖面示意圖； 圖4係本發明一實施例之觸控面板之剖面示意圖； 圖5A係本發明一實施例之觸控面板之剖面示意圖；以 及 圖5B係本發明另一實施例之觸控面板之剖面示意圖。 【主要元件符號說明】 10 觸控面板 11 透明基板 201101160 12 橋接線 13 絕緣層 14 透明導電層 15 金屬導線 13 1 絕緣區域 141第一單元 142 第二單元 143 連接線 ❹ 20、20,、30、40、50、 電容式觸控面板 21 透明基板 23 絕緣層 25、25'光遮蔽層 26 電容感應電路元件 211 第一表面 212 第二表面 ^ 262 感測區 ❹ 263 金屬導線 264 橋接線 265 透明導電層Touch panels have been widely used in household appliances, communication devices, and electronic information devices. Typically, touch panel applications are used as input interfaces for personal digital assistants (PDAs), electronics, and gaming consoles. Currently, the integration trend of the touch panel and the display screen allows the user to select a representative icon (icon) displayed on the panel with a finger or a touch pen, so that the personal digital assistant, the electronic product, and the game machine can perform the favorite function. Such touch panels are also used in public information inquiry systems to provide a publicly efficient operating system. A conventional touch panel includes a transparent substrate having a surface formed by a plurality of sensing electrodes. The distributed sensing pads are used to sense a signal caused by a user touching with a finger or a touch pen. Make input or control. The sensing pad is composed of a transparent conductive film, such as indium tin oxide (ITO), and the user can operate the device by touching a corresponding transparent conductive film displayed at a specific position on the display screen. In order to effectively detect the correct position of the user touching the panel with a finger or a touch pen, a variety of touch panel technologies have been developed. As shown in FIG. 1A, the light transmissive touch panel H includes a transparent substrate, a plurality of bridge wires 12, an insulating layer 13, and a transparent conductive layer 14. The transparent conductive layer 14 covers the upper surface of the transparent substrate 11, and includes a plurality of first units, a plurality of second units 142, and a plurality of connecting lines 143. The plurality of first units 201101160 141 and the plurality of second units 142 are staggered, and each of the first units 141 is surrounded by four second units 142. Each of the plurality of connecting lines 143 is connected to the adjacent second unit 142. The insulating layer 13 further includes a plurality of insulating regions 131 ′. The plurality of insulating regions 131 respectively cover the plurality of connecting lines 143. The plurality of bridge wires 12 are respectively disposed on the plurality of insulating regions 131, and are respectively connected to adjacent ones. A unit 14b has a plurality of metal wires 15 disposed on the peripheral side of the transparent conductive layer 14. The plurality of metal wires 15 allow the lateral and longitudinal connections of the first unit 141 and the second unit 142 to be sensed. The signal is transmitted to the outside. However, since the plurality of bridge wires 12 and the plurality of metal wires 15 are metal materials that can reflect light, when the light is penetrated through the touch panel 1 or the lower display screen is controlled, the bridge wire 12 and the metal The wire 15 reflects the light to form a bright band or a bright line, which causes the user to view the display screen or is visually uncomfortable. In addition, there is a conventional technique of adding a lens to the light-transmitting touch panel 1 and placing a black matrix between the lens and the light-transmitting touch panel 1 , and the black matrix is just right. Covering the area where the surrounding metal wires are located, it is able to block the concentrated plurality of metal wires to form a bright band of reflected light. However, the lens and the transparent substrate of the light-transmissive touch panel are all made of the same glass material, so that not only the material and the manufacturing steps are increased, but also the display screen is exposed to more light to cause the image to become dark. Therefore, there is a need in the market for a touch panel that overcomes the shortcomings of the conventional touch panel described above and still maintains a low manufacturing cost. SUMMARY OF THE INVENTION 201101160 The present invention provides a light-transmissive touch panel. The bridge connection of the touch panel overlaps with the light shielding layer, so that no glare bright spots or bright lines are generated in the sensing area. In summary, the present invention discloses a capacitive touch panel comprising a transparent substrate, a light shielding layer and a capacitive sensing circuit component. The capacitive sensing circuit component is disposed on a surface of one of the transparent substrates and includes a sensing region and a plurality of metal wires. The sensing region includes a plurality of metal bridge wires. The plurality of metal wires are located around the sensing region and are electrically connected to the sensing region. The area of the light shielding layer overlaps the plurality of metal bridge lines vertically. In one embodiment of the present invention, the light shielding layer is directly disposed on a surface of the transparent substrate, and the capacitive sensing circuit component is directly stacked on the light shielding layer. In one embodiment of the present invention, the light shielding layer is disposed on a surface of the transparent substrate, and the capacitive sensing circuit component is disposed on the other surface of the transparent substrate. In one example of the present invention, the light shielding layer is directly disposed on a surface of the plurality of metal bridge wires in the sensing region. Embodiment 2 FIG. 2 is a schematic side view of a touch panel according to an embodiment of the present invention. As shown in FIG. 2A, a capacitive touch panel 20 includes a transparent substrate 21, an insulating layer 23, a light shielding layer 25, and a capacitive sensing circuit component 26. The capacitive sensing circuit component 26 is disposed on the transparent substrate. The first surface 211 of the 21 includes a sensing region 262 and a plurality of metal wires 263. The sensing region 262 includes 201101160 a plurality of metal bridge wires 264 and a transparent conductive layer 265. A plurality of metal wires 263 are located around the sensing region 262 and are electrically connected to the sensing region 262. The light shielding layer 25 is directly disposed on the first surface 211 of the transparent substrate, that is, sandwiched between the capacitance sensing circuit component 26 and the transparent substrate 21, and the area of the light shielding layer 25 and the A plurality of metal bridge wires 264 are vertically overlapped. Therefore, when the user views and uses the capacitive touch panel 20 from the second surface 212 of the transparent substrate 21, the light shielding layer 25 blocks the metal bridge 264', thus eliminating or reducing the reflection of the metal bridge 264. The problem of light, that is, there is no bright spot or bright line in the sensing area 262 to produce the glass or transparent polymer plate of the transparent substrate 21, such as polycarbonate (PC) and polyethylene (PVC). . The material of the transparent conductive layer 265 and the bridge wire 264 is oxidized oxalic acid (ITO), oxidized inscription (AZO) or copper oxide zinc (IZO). The metal bridge wire 264 and the metal wire 263 are made of a composite metal layer of chromium (Cr) or molybdenum/aluminum/molybdenum (Mo/Al/Mo). The material of the light shielding layer 25 is chrome oxide (CrO) or a polymer opaque or translucent material. The material of the insulating layer 23 is a transparent polymer material such as a photoresist material. 2B is a schematic side view of a touch panel according to another embodiment of the present invention. As shown in FIG. 2B, a capacitive touch panel 20' includes a transparent substrate 21, an insulating layer 23, a light shielding layer 25', and a capacitive sensing circuit component 26. The capacitance sensing circuit component 26 is disposed on the first surface 211 of the transparent substrate 21 and includes a sensing region 262 and a plurality of metal wires 263. The sensing region 262 includes a plurality of metal bridge wires 264 and a transparent conductive layer 265. The plurality of metal wires 263 are located around the sensing region 262 and are electrically connected to the sensing region 262 201101160. The light shielding layer 25 ′ is directly disposed on the first surface 211 of the transparent substrate, that is, between the capacitive sensing circuit component 26 and the transparent substrate 21 , and the area of the light shielding layer 25 ′ is The plurality of metal bridge wires 264 and the plurality of metal wires 263 are vertically overlapped. Therefore, when the user views and uses the capacitive touch panel 20 from the second surface 212 of the transparent substrate 21, the light shielding layer 25 blocks the metal bridge wire 264 and the plurality of metal wires 263, thus eliminating the The metal bridge wire 264 and the plurality of metal wires 27 reflect the problem of light, that is, there are no bright spots, bright lines, or bright bands. Compared with FIG. 2A, the light shielding layer 25' of FIG. 2B increases the shielding area of the plurality of metal wires 263 around the capacitive touch panel 20'. 3 is a cross-sectional view of a touch panel in accordance with an embodiment of the present invention. The light shielding layer 25 of the capacitive touch panel 30 of FIG. 3 is disposed in the capacitive sensing circuit component 26, that is, the plurality of metal bridge wires 264 and the transparent conductive layer 265. Between the two, but the effect of avoiding the reflection of light by the plurality of metal bridge wires 264 can be achieved. 4 is a cross-sectional view of a touch panel in accordance with an embodiment of the present invention. The light shielding layer 25 of the capacitive touch panel 40 is disposed above the plurality of metal bridge wires 264, that is, between the insulating layer 23 and the plurality of metal bridge wires 264. The user is more suitable to view and operate the capacitive touch panel 40 from one end of the insulating layer 23. FIG. 5 is a cross-sectional view of a touch panel according to an embodiment of the present invention. The light shielding layer 25 of the capacitive touch panel 5 is disposed on the second surface 212 of the transparent substrate 21 , that is, the capacitive sensing circuit component 26 is disposed on the transparent substrate 21 . The opposite surface. It is also possible to avoid the effect of the multiple metal bridge wires 214 reflecting light rays from 201101160. Compared with the capacitive touch panel 5A of FIG. 5A and FIG. 5B, the light shielding layer 25' increases the shielding area of the plurality of metal wires 263 around the capacitive touch panel 50', thereby eliminating the metal bridge. Line 264 and the plurality of metal wires 263 reflect the problem of light, that is, no bright spots, bright lines, or bright bands are produced. The technical contents and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of the invention is not limited by the scope of the invention, and the invention is intended to cover various alternatives and modifications without departing from the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic view of a conventional touch panel; FIG. 1B is a cross-sectional view taken along line 1-1 of FIG. 1A; FIG. 2A is a cross-sectional view of a touch panel according to an embodiment of the present invention; 2B is a schematic cross-sectional view of a touch panel according to another embodiment of the present invention; FIG. 3 is a cross-sectional view of a touch panel according to an embodiment of the present invention; FIG. 4 is a cross-sectional view of a touch panel according to an embodiment of the present invention; A schematic cross-sectional view of a touch panel according to an embodiment of the present invention; and FIG. 5B is a cross-sectional view of a touch panel according to another embodiment of the present invention. [Main component symbol description] 10 Touch panel 11 Transparent substrate 201101160 12 Bridge wiring 13 Insulation layer 14 Transparent conductive layer 15 Metal wire 13 1 Insulation region 141 First unit 142 Second unit 143 Connection line 20, 20, 30 40, 50, capacitive touch panel 21 transparent substrate 23 insulating layer 25, 25' light shielding layer 26 capacitive sensing circuit component 211 first surface 212 second surface ^ 262 sensing region 263 metal wire 264 bridge wire 265 transparent conductive Floor