TWI621057B - Touch panel - Google Patents
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Abstract
一種觸控面板,包括第一感測電極以及第二感測電極。第一感測電極具有交錯成網狀的多條第一網線。第二感測電極具有交錯成網狀的多條第二網線。第一感測電極與第二感測電極各自沿不同的方向延伸且彼此絕緣。至少一第一網線與至少一第二網線交錯。至少一第一網線在與至少一第二網線交錯處的線寬大於至少一第一網線在未與第二網線交錯處的線寬。A touch panel includes a first sensing electrode and a second sensing electrode. The first sensing electrode has a plurality of first mesh lines staggered in a mesh shape. The second sensing electrode has a plurality of second network lines that are staggered into a network. The first sensing electrode and the second sensing electrode each extend in different directions and are insulated from each other. At least one first network cable is interleaved with at least one second network cable. The line width of the at least one first network line at the intersection with the at least one second network line is greater than the line width of the at least one first network line at the intersection with the second network line.
Description
本發明是有關於一種電子裝置,且特別是有關於一種觸控面板。The present invention relates to an electronic device, and more particularly to a touch panel.
近年來,隨著資訊技術的快速發展,為了更便利、體積更輕巧化及更人性化的目的,許多資訊產品的輸入裝置已由傳統的鍵盤或滑鼠等轉變為觸控面板。現今的觸控面板大致上可區分為電阻式、電容式、光學式、聲波式以及電磁式等,其中又以電阻式及電容式為主流。In recent years, with the rapid development of information technology, many information products have been converted into touch panels by traditional keyboards or mice for the convenience, volume, and humanization. Today's touch panels can be roughly classified into resistive, capacitive, optical, acoustic, and electromagnetic, with resistive and capacitive being the mainstream.
以電容式觸控面板為例,電容式觸控面板包括彼此交錯的多個第一感測電極及多個第二感測電極。一般而言,第一感測電極及多個第二感測電極多用透光導電材料(例如:銦錫氧化物,ITO)製作,但由於透光導電材料的阻值較高、不利於觸控面板的驅動,因此有人提出利用阻值低的遮光導電材料製作網狀的感測電極。然而,由於網狀感測電極之網線的線寬小、製程變異性大,網線之線寬的公差不易控制在理想範圍內,因此第一感測電極之網線與第二感測電極之網線交錯處的電容變異也大,不利於觸控面板的性能。Taking a capacitive touch panel as an example, the capacitive touch panel includes a plurality of first sensing electrodes and a plurality of second sensing electrodes that are staggered with each other. Generally, the first sensing electrode and the plurality of second sensing electrodes are mostly made of a light-transmitting conductive material (for example, indium tin oxide, ITO), but the resistance of the light-transmitting conductive material is high, which is not favorable for touch. Since the panel is driven, it has been proposed to form a mesh-shaped sensing electrode using a light-shielding conductive material having a low resistance. However, since the line width of the mesh sensing electrode is small and the process variability is large, the tolerance of the line width of the network line is not easily controlled within an ideal range, so the network line of the first sensing electrode and the second sensing electrode The capacitance variation at the intersection of the network lines is also large, which is not conducive to the performance of the touch panel.
本發明提供一種觸控面板,性能佳。The invention provides a touch panel with good performance.
本發明的觸控面板,包括第一感測電極以及第二感測電極。第一感測電極具有交錯成網狀的多條第一網線。第二感測電極具有交錯成網狀的多條第二網線。第一感測電極與第二感測電極各自沿不同的方向延伸且彼此絕緣。至少一第一網線與至少一第二網線交錯。至少一第一網線在與至少一第二網線交錯處的線寬大於至少一第一網線在未與第二網線交錯處的線寬。The touch panel of the present invention includes a first sensing electrode and a second sensing electrode. The first sensing electrode has a plurality of first mesh lines staggered in a mesh shape. The second sensing electrode has a plurality of second network lines that are staggered into a network. The first sensing electrode and the second sensing electrode each extend in different directions and are insulated from each other. At least one first network cable is interleaved with at least one second network cable. The line width of the at least one first network line at the intersection with the at least one second network line is greater than the line width of the at least one first network line at the intersection with the second network line.
在本發明的一實施例中,上述的每一第一網線至少具有相連接的粗部與細部。每一第一網線的粗部設置於第一網線與對應的第二網線的交錯處。每一第一網線的細部未與第二網線重疊。In an embodiment of the invention, each of the first mesh wires has at least a connected thick portion and a thin portion. The thick portion of each of the first network lines is disposed at an intersection of the first network line and the corresponding second network line. The details of each of the first network lines do not overlap with the second network lines.
在本發明的一實施例中,上述的多條第一網線的多個粗部的線寬實質上相同。In an embodiment of the invention, the plurality of thick portions of the plurality of first mesh lines have substantially the same line width.
在本發明的一實施例中,上述的每一第一網線至少具有相連接的粗部與細部,每一第一網線的粗部設置於第一網線與對應的第二網線的交錯處。每一第一網線的細部未與第二網線重疊。粗部與細部形成於同一膜層。In an embodiment of the present invention, each of the first network lines has at least a connected thick portion and a thin portion, and the thick portion of each of the first network lines is disposed on the first network line and the corresponding second network line. Interlaced. The details of each of the first network lines do not overlap with the second network lines. The thick portion and the thin portion are formed in the same film layer.
在本發明的一實施例中,上述的每一第一網線具有相連接的粗部與細部。每一第一網線的粗部設置於第一網線與對應的第二網線的交錯處。每一第一網線的細部未與第二網線重疊。粗部與細部形成於不同的膜層。In an embodiment of the invention, each of the first mesh wires has a connected thick portion and a thin portion. The thick portion of each of the first network lines is disposed at an intersection of the first network line and the corresponding second network line. The details of each of the first network lines do not overlap with the second network lines. The thick portion and the thin portion are formed in different film layers.
在本發明的一實施例中,上述的第一感測電極與第二感測電極的至少一者具有黑化表面。In an embodiment of the invention, at least one of the first sensing electrode and the second sensing electrode has a blackened surface.
在本發明的一實施例中,上述的至少一第一網線在與未第二網線交錯處的線寬為W2,而1μm≦W2≦10μm。In an embodiment of the invention, the line width of the at least one first network line at the intersection with the second network line is W2, and 1 μm ≦ W2 ≦ 10 μm.
在本發明的一實施例中,上述的至少一第一網線在與至少一第二網線交錯處的線寬為W1,而0.5μm≦(W1-W2)≦10μm。In an embodiment of the invention, the line width of the at least one first network line at the intersection with the at least one second network line is W1, and 0.5 μm ≦ (W1-W2) ≦ 10 μm.
在本發明的一實施例中,上述的第一感測電極(及/或第二感測電極)的材質包括金屬、金屬氧化物、奈米銀膠或其組合。In an embodiment of the invention, the material of the first sensing electrode (and/or the second sensing electrode) comprises a metal, a metal oxide, a nano silver paste or a combination thereof.
基於上述,本發明一實施例的觸控面板包括第一感測電極及第二感測電極。第一感測電極具有交錯成網狀的多條第一網線。第二感測電極具有交錯成網狀的多條第二網線。第一網線與第二網線交錯。特別是,第一網線在與第二網線交錯處的線寬大於第一網線在未與第二網線交錯處的線寬。藉此,在觸控面板各處的第一網線與第二網線的交錯處的電容的變異小,而有助於觸控面板的性能提升。Based on the above, the touch panel of the embodiment of the invention includes a first sensing electrode and a second sensing electrode. The first sensing electrode has a plurality of first mesh lines staggered in a mesh shape. The second sensing electrode has a plurality of second network lines that are staggered into a network. The first network cable is interleaved with the second network cable. In particular, the line width of the first network line at the intersection with the second network line is greater than the line width of the first network line at the intersection with the second network line. Thereby, the variation of the capacitance at the intersection of the first network line and the second network line in the touch panel is small, which contributes to the performance improvement of the touch panel.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.
圖1為本發明一實施例之觸控面板的上視示意圖。圖2為圖1之觸控面板的局部R的放大示意圖。圖3為本發明一實施例之觸控面板的剖面示意圖。特別是,圖3對應於圖2的剖線A-A’及剖線B-B’。FIG. 1 is a top plan view of a touch panel according to an embodiment of the invention. 2 is an enlarged schematic view of a portion R of the touch panel of FIG. 1. 3 is a cross-sectional view of a touch panel according to an embodiment of the invention. In particular, Fig. 3 corresponds to the line A-A' and the line B-B' of Fig. 2 .
請參照圖1,觸控面板TP包括觸控感測結構100和用以承載觸控感測結構100的承載件10。承載件10可為任何能承載觸控感測結構100的透光構件。舉例而言,承載件10可為基板(substrate)、膜(Film)或其組合。觸控感測結構100包括多個第一感測電極110與多個第二感測電極120。第一感測電極110沿第一方向x延伸。第二感測電極120沿第二方向y延伸。第一方向x與第二方向y不同。具體而言,第一方向x與第二方向y交錯。在本實施例中,第一方向x與第二方向例如是相垂直,但本發明不以此為限。在其他實施例中,第一方向x與第二方向y也可夾90度之外的其他角度。第一感測電極110與第二感測電極120彼此絕緣。詳言之,在本實施例中,第一感測電極110與第二感測電極120的一者為驅動電極(Tx,Driving electrodes),第一感測電極110與第二感測電極120的另一者為接收電極(Rx,receiving electrodes)。透過偵測第一感測電極110與第二感測電極120之間的電容變化能決定觸碰位置。換言之,本實施例的觸控面板TP為電容式觸控面板。Referring to FIG. 1 , the touch panel TP includes a touch sensing structure 100 and a carrier 10 for carrying the touch sensing structure 100 . The carrier 10 can be any light transmissive member capable of carrying the touch sensing structure 100. For example, the carrier 10 can be a substrate, a film, or a combination thereof. The touch sensing structure 100 includes a plurality of first sensing electrodes 110 and a plurality of second sensing electrodes 120. The first sensing electrode 110 extends in the first direction x. The second sensing electrode 120 extends in the second direction y. The first direction x is different from the second direction y. Specifically, the first direction x is interleaved with the second direction y. In this embodiment, the first direction x and the second direction are, for example, perpendicular, but the invention is not limited thereto. In other embodiments, the first direction x and the second direction y may also be clipped at angles other than 90 degrees. The first sensing electrode 110 and the second sensing electrode 120 are insulated from each other. In detail, in the embodiment, one of the first sensing electrode 110 and the second sensing electrode 120 is a driving electrode (Tx), and the first sensing electrode 110 and the second sensing electrode 120 are The other is a receiving electrode (Rx). The touch position can be determined by detecting a change in capacitance between the first sensing electrode 110 and the second sensing electrode 120. In other words, the touch panel TP of the embodiment is a capacitive touch panel.
請參照圖1及圖2,第一感測電極110為網狀(mesh)電極且具有交錯成網狀的多條第一網線112,其中多條第一網線112定義第一感測電極110的多個第一開口110a。第二感測電極120為網狀電極且具有交錯成網狀的多條第二網線122,其中多條第二網線122定義第二感測電極120的多個第二開口120a。在本實施例中,第一感測電極110與第二感測電極120的材質例如為遮光的導電材料。舉例而言,第一感測電極110與第二感測電極120的材質可包括金屬(例如:金、銀、銅等)、金屬氧化物、奈米銀膠或其組合。然而,本發明不限於此,在其他實施例中,第一感測電極110與第二感測電極120也可為其他適當材料。此外,在本實施例中,可利用任何適當的方法形成第一感測電極110與第二感測電極120,舉例而言,可利用微影製程、印刷製程、噴塗製程或其它適當方式形成之。Referring to FIG. 1 and FIG. 2, the first sensing electrode 110 is a mesh electrode and has a plurality of first network lines 112 staggered in a network. The plurality of first network lines 112 define a first sensing electrode. A plurality of first openings 110a of 110. The second sensing electrode 120 is a mesh electrode and has a plurality of second mesh wires 122 staggered in a mesh shape, wherein the plurality of second mesh wires 122 define a plurality of second openings 120a of the second sensing electrodes 120. In this embodiment, the material of the first sensing electrode 110 and the second sensing electrode 120 is, for example, a light-shielding conductive material. For example, the material of the first sensing electrode 110 and the second sensing electrode 120 may include a metal (eg, gold, silver, copper, etc.), a metal oxide, a nano silver paste, or a combination thereof. However, the present invention is not limited thereto. In other embodiments, the first sensing electrode 110 and the second sensing electrode 120 may also be other suitable materials. In addition, in this embodiment, the first sensing electrode 110 and the second sensing electrode 120 may be formed by any suitable method, for example, by using a lithography process, a printing process, a spraying process, or other suitable manner. .
第一感測電極110的第一網線112與第二感測電極120的第二網線122交錯。特別是,第一網線112在與第二網線122交錯處(即粗部112a)的線寬W1大於第一網線112在未與第二網線122交錯處(即細部112b)的線寬W2。舉例而言,在本實施例中,1μm≦W2≦10μm,0.5μm≦(W1-W2)≦10μm,但本發明不以此為限,線寬W1及線寬W2也可設計在其他適當範圍。The first network line 112 of the first sensing electrode 110 is interleaved with the second network line 122 of the second sensing electrode 120. In particular, the line width W1 of the first network line 112 at the intersection with the second network line 122 (ie, the thick portion 112a) is greater than the line of the first network line 112 at the point where the second network line 122 is not interlaced (ie, the detail 112b). Wide W2. For example, in the present embodiment, 1 μm ≦W2 ≦ 10 μm, 0.5 μm ≦ (W1-W2) ≦ 10 μm, but the invention is not limited thereto, and the line width W1 and the line width W2 can also be designed in other suitable ranges. .
在本實施例中,第一網線112具有相連接的粗部112a與細部112b。第一網線112的粗部112a設置於第一網線112與對應之第二網線122的交錯處。第一網線112的細部112b未與第二網線122重疊。換言之,第一網線112的粗部112a位於第一感測電極110與第二感測電極120重疊處及其附近的區域,而第一網線112的細部112b位於第二感測電極120之第二開口120a的面積以內。第一網線112的粗部112a在平行於第二網線122的長度方向D1上具有線寬W1,第一網線112的細部112b在方向D2上具有線寬W2,其中方向D1、D2彼此平行,而粗部112a的線寬W1大於細部112b的線寬W2。更進一步地說,第一網線112的粗部112a在平行於第一網線112的長度方向D3上具有線寬W3,位於第一感測電極110之第一開口110a的面積以內的部分第二網線122在方向D4上具有線寬W4,其中方向D3、D4彼此平行,而線寬W3大於或等於線寬W4。In the present embodiment, the first mesh line 112 has the connected thick portion 112a and the thin portion 112b. The thick portion 112a of the first network line 112 is disposed at an intersection of the first network line 112 and the corresponding second network line 122. The detail 112b of the first wire 112 does not overlap the second wire 122. In other words, the thick portion 112a of the first network line 112 is located at a region where the first sensing electrode 110 overlaps with the second sensing electrode 120 and the vicinity thereof, and the thin portion 112b of the first network line 112 is located at the second sensing electrode 120. The area of the second opening 120a is within. The thick portion 112a of the first wire 112 has a line width W1 in a longitudinal direction D1 parallel to the second wire 122, and the detail 112b of the first wire 112 has a line width W2 in a direction D2, wherein the directions D1, D2 are mutually Parallel, and the line width W1 of the thick portion 112a is larger than the line width W2 of the thin portion 112b. Further, the thick portion 112a of the first wire 112 has a line width W3 in a longitudinal direction D3 parallel to the first wire 112, and is located within a portion of the first opening 110a of the first sensing electrode 110. The second wire 122 has a line width W4 in the direction D4, wherein the directions D3, D4 are parallel to each other, and the line width W3 is greater than or equal to the line width W4.
在本實施例中,分別位於觸控面板TP多處的多條第一網線112的多個粗部112a的線寬W1實質上相同。然而,本發明並不以此為限,在其他實施例中,每一粗部112a只要滿足線寬W1大於線寬W2以及線寬W3大於或等於線寬W4,分別位於觸控面板TP多處的多個粗部112a的多個線寬W1並不限定必需相同。In this embodiment, the line widths W1 of the plurality of thick portions 112a of the plurality of first network lines 112 located at a plurality of locations on the touch panel TP are substantially the same. However, the present invention is not limited thereto. In other embodiments, each thick portion 112a is located at a plurality of touch panels TP as long as the line width W1 is greater than the line width W2 and the line width W3 is greater than or equal to the line width W4. The plurality of line widths W1 of the plurality of thick portions 112a are not necessarily limited to be the same.
值得一提的是,第一網線112在與第二網線122交錯處(即粗部112a)的線寬W1較寬,而較寬的線寬W1具有較佳的變異穩定性。意即,第一網線112在與第二網線122交錯處的線寬W1在相同的製造公差下具有比線寬W2(即細部112b)較小的變異比例。舉例而言,在網線線寬的製程公差為±0.4μm時,當線寬W1設計為8μm,線寬W2設計為4μm,則實際產品的線寬W1會落在7.6μm~8.4μm之間,實際產品的線寬W2會落在3.6μm~4.4μm之間,因此線寬W1的變異比例是10%(0.8/8=0.1),而線寬W2的變異比例是20%(0.8/4=0.2),而且線寬越小其實際產品的變異比越大,因此較寬的線寬W1具有較佳的變異穩定性。尤其當需求網線線寬越小以提高整體光學穿透率設計時,為避免因第一感測電極110之第一網線112與第二感測電極120之第二網線122交錯處的電容變異變大,不利於觸控面板TP的性能,因此僅需在觸控面板TP各處,第一感測電極110與第二網線122交錯之區域設計較寬的線寬(即第一網線112的粗部112a)即可得到和第二感測電極120形成的電容的變異較小的功效,而有助於觸控面板TP的性能提升。舉例而言,當觸控面板TP各處之第一感測電極110與第二感測電極120交錯處的電容的變異小時,觸控面板TP的觸控準確度及/或觸控靈敏度能提升。It is worth mentioning that the line width W1 of the first network line 112 at the intersection with the second network line 122 (ie, the thick portion 112a) is wider, and the wider line width W1 has better variation stability. That is, the line width W1 of the first wire 112 at the intersection with the second wire 122 has a smaller variation ratio than the line width W2 (i.e., the detail 112b) under the same manufacturing tolerance. For example, when the process tolerance of the line width is ±0.4μm, when the line width W1 is designed to be 8μm and the line width W2 is designed to be 4μm, the line width W1 of the actual product will fall between 7.6μm and 8.4μm. The line width W2 of the actual product will fall between 3.6μm and 4.4μm, so the variation ratio of the line width W1 is 10% (0.8/8=0.1), and the variation ratio of the line width W2 is 20% (0.8/4). =0.2), and the smaller the line width, the larger the variation ratio of the actual product, so the wider line width W1 has better variation stability. In particular, when the required line width of the network cable is smaller to improve the overall optical transmittance design, in order to avoid the intersection of the first network line 112 of the first sensing electrode 110 and the second network line 122 of the second sensing electrode 120 The capacitance variation becomes large, which is disadvantageous to the performance of the touch panel TP. Therefore, it is only necessary to design a wider line width in the area where the first sensing electrode 110 and the second network line 122 are interlaced (ie, the first part). The thick portion 112a) of the network line 112 can obtain the effect of less variation of the capacitance formed by the second sensing electrode 120, and contribute to the performance improvement of the touch panel TP. For example, when the variation of the capacitance between the first sensing electrode 110 and the second sensing electrode 120 in the touch panel TP is small, the touch accuracy and/or the touch sensitivity of the touch panel TP can be improved. .
此外,需說明的是,在上述實施例中,僅描述第一感測電極110在與第二感測電極120交錯處具有線寬W1較寬的粗部112a,但本發明不以此為限。在其他實施例中,第二感測電極120在與第一感測電極120交錯處也可具有線寬較寬的粗部(未繪示),其中第一感測電極110之粗部112a的位置與第二感測電極120的粗部的位置可相對應;第一感測電極110與第二感測電極120均具有位於兩者交錯處的粗部時,第一感測電極110的粗部112a與第二感測電極120之粗部(即第一網線112與第二網線122交錯處)所形成的電容的變異可更進一步縮小,而更進一步提升觸控面板的性能。In addition, in the above embodiment, only the first sensing electrode 110 has a thick portion 112a having a wider line width W1 at the intersection with the second sensing electrode 120, but the invention is not limited thereto. . In other embodiments, the second sensing electrode 120 may also have a thick portion (not shown) having a wide line width at the intersection with the first sensing electrode 120, wherein the thick portion 112a of the first sensing electrode 110 The position may correspond to the position of the thick portion of the second sensing electrode 120; when both the first sensing electrode 110 and the second sensing electrode 120 have a thick portion at the intersection of the two, the thickness of the first sensing electrode 110 is thick. The variation of the capacitance formed by the portion 112a and the second portion of the second sensing electrode 120 (ie, the intersection of the first network line 112 and the second network line 122) can be further reduced, and the performance of the touch panel is further improved.
請參照圖2及圖3,在本實施例中,為提升觸控面板TP的視效,以讓使用者不易察覺第一感測電極110與第二感測電極120,第一感測電極110及/或第二感測電極120可具有面向使用者的黑化表面110b及/或120b。舉例而言,黑化表面110b及/或120b可由金屬氧化層、金屬氮化層、暗色油墨或其他不易反光的材料製成,但本發明不以此為限。Referring to FIG. 2 and FIG. 3 , in the embodiment, in order to improve the visual effect of the touch panel TP, the first sensing electrode 110 and the second sensing electrode 120 are not easily perceived by the user, and the first sensing electrode 110 is And/or the second sensing electrode 120 can have a blackened surface 110b and/or 120b facing the user. For example, the blackened surface 110b and/or 120b may be made of a metal oxide layer, a metal nitride layer, a dark ink, or other non-reflective material, but the invention is not limited thereto.
在本實施例中,觸控面板TP還包括設置於第一感測電極110與第二感測電極120之間的絕緣層130(繪於圖3)。在圖3的實施例中,絕緣層130示例性地全面性設置在承載件10上。然而,本發明不限於此,在其他實施例中,絕緣層130也可為圖案化的絕緣層;舉例而言,圖案化的絕緣層可包括設置於第一感測電極110與第二感測電極120之多個交錯處的多個島狀絕緣圖案,但本發明不以此為限。In this embodiment, the touch panel TP further includes an insulating layer 130 (shown in FIG. 3 ) disposed between the first sensing electrode 110 and the second sensing electrode 120 . In the embodiment of FIG. 3, the insulating layer 130 is illustratively integrally disposed on the carrier 10. However, the present invention is not limited thereto. In other embodiments, the insulating layer 130 may also be a patterned insulating layer; for example, the patterned insulating layer may include a first sensing electrode 110 and a second sensing. A plurality of island-shaped insulating patterns at a plurality of intersections of the electrodes 120, but the invention is not limited thereto.
在本實施例中,承載件10例如為具有觸控面10a(標示於圖3)的保護基板(Cover glass),而第一感測電極110與第二感測電極120可形成於同一承載件10上。換言之,在本實施例中,觸控面板TP例如是本領域所慣稱的OGS(one glass solution)觸控面板。然而,本發明不限於此,凡包括上述第一感測電極110與第二感測電極120的各式觸控面板均在本發明所欲保護的範疇內。在其他實施例中,觸控面板TP也可為本領域所慣稱的 GFF、GF2、GF、GG或其他適當態樣的觸控面板。In this embodiment, the carrier 10 is, for example, a cover glass having a touch surface 10a (shown in FIG. 3), and the first sensing electrode 110 and the second sensing electrode 120 may be formed on the same carrier. 10 on. In other words, in the present embodiment, the touch panel TP is, for example, an OGS (one glass solution) touch panel as is conventional in the art. However, the present invention is not limited thereto, and various touch panels including the first sensing electrode 110 and the second sensing electrode 120 are within the scope of the present invention. In other embodiments, the touch panel TP can also be a touch panel of GFF, GF2, GF, GG or other suitable aspect as is conventional in the art.
此外,在本實施例中,第一感測電極110的粗部112a與第一感測電極110的細部112b可選擇性地形成於同一膜層,而第二感測電極120形成於另一膜層,但本發明不以此為限。在其他實施例中,第一感測電極110的粗部112a與第一感測電極110的細部112b也分別形成於不同膜層且彼此電性連接,以下將於後續段落配合其他圖示說明之。In addition, in the embodiment, the thick portion 112a of the first sensing electrode 110 and the thin portion 112b of the first sensing electrode 110 are selectively formed on the same film layer, and the second sensing electrode 120 is formed on the other film. Layer, but the invention is not limited thereto. In other embodiments, the thick portion 112a of the first sensing electrode 110 and the thin portion 112b of the first sensing electrode 110 are also respectively formed on different film layers and electrically connected to each other, which will be described in the following paragraphs in conjunction with other illustrations. .
圖4為本發明另一實施例之觸控面板的局部的放大示意圖。圖4的觸控面板的局部R也對應圖1之觸控面板的局部R。圖5為本發明另一實施例之觸控面板的剖面示意圖。特別是,圖5對應於圖4的剖線C-C’及剖線D-D’。請參照圖4及圖5,觸控面板TP-1與前述之觸控面板TP類似,因此相同或相對應的元件以相同或相對應的標號表示。觸控面板TP-1與觸控面板TP的差異在於,觸控面板TP-1的第一網線112的粗部112a’與細部112b可分別形成於不同的膜層。在圖5的實施例中,可先形成細部112b,之後再形成與細部112b電性連接的粗部112a’。然而,本發明不限於此,在其他實施例中,也可先形成粗部112a’,之後再形成與粗部112a’電性連接的細部112b。觸控面板TP-1具有與觸控面板TP類似的功效與優點,於此便不再重述。FIG. 4 is an enlarged schematic view showing a portion of a touch panel according to another embodiment of the present invention. The portion R of the touch panel of FIG. 4 also corresponds to the portion R of the touch panel of FIG. FIG. 5 is a cross-sectional view of a touch panel according to another embodiment of the present invention. In particular, Fig. 5 corresponds to the line C-C' and the line D-D' of Fig. 4. Referring to FIG. 4 and FIG. 5, the touch panel TP-1 is similar to the touch panel TP described above, and thus the same or corresponding elements are denoted by the same or corresponding reference numerals. The difference between the touch panel TP-1 and the touch panel TP is that the thick portion 112a' and the thin portion 112b of the first mesh 112 of the touch panel TP-1 can be formed on different film layers, respectively. In the embodiment of Fig. 5, the thin portion 112b may be formed first, and then the thick portion 112a' electrically connected to the thin portion 112b may be formed. However, the present invention is not limited thereto, and in other embodiments, the thick portion 112a' may be formed first, and then the thin portion 112b electrically connected to the thick portion 112a' may be formed. The touch panel TP-1 has similar functions and advantages as the touch panel TP, and will not be repeated here.
綜上所述,本發明一實施例的觸控面板包括第一感測電極及第二感測電極。第一感測電極具有交錯成網狀的多條第一網線。第二感測電極具有交錯成網狀的多條第二網線。至少一條第一網線與至少一條第二網線交錯。特別是,第一網線在與第二網線交錯處的線寬大於第一網線在未與第二網線交錯處的線寬。藉此,在觸控面板各處的第一網線與第二網線的交錯處的電容的變異小,而有助於觸控面板的性能提升。In summary, the touch panel of the embodiment of the invention includes a first sensing electrode and a second sensing electrode. The first sensing electrode has a plurality of first mesh lines staggered in a mesh shape. The second sensing electrode has a plurality of second network lines that are staggered into a network. At least one first network cable is interleaved with at least one second network cable. In particular, the line width of the first network line at the intersection with the second network line is greater than the line width of the first network line at the intersection with the second network line. Thereby, the variation of the capacitance at the intersection of the first network line and the second network line in the touch panel is small, which contributes to the performance improvement of the touch panel.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
10‧‧‧承載件
10a‧‧‧觸控面
100‧‧‧觸控感測結構
110‧‧‧第一感測電極
110a‧‧‧第一開口
110b、120b‧‧‧黑化表面
112‧‧‧第一網線
112a、112a’‧‧‧粗部10‧‧‧ Carrier
10a‧‧‧ touch surface
100‧‧‧ touch sensing structure
110‧‧‧First sensing electrode
110a‧‧‧first opening
110b, 120b‧‧‧ blackened surface
112‧‧‧First network cable
112a, 112a'‧‧‧
112b‧‧‧細部 112b‧‧‧Details
120‧‧‧第二感測電極 120‧‧‧Second sensing electrode
120a‧‧‧第二開口 120a‧‧‧second opening
122‧‧‧第二網線 122‧‧‧Second network cable
130‧‧‧絕緣層 130‧‧‧Insulation
A-A’、B-B’、C-C’、D-D’‧‧‧剖線 A-A’, B-B’, C-C’, D-D’‧‧‧
R‧‧‧局部 R‧‧‧ partial
TP、TP1‧‧‧觸控面板 TP, TP1‧‧‧ touch panel
W1~W4‧‧‧線寬 W1~W4‧‧‧ line width
x、y、D1~D4‧‧‧方向 x, y, D1~D4‧‧‧ directions
圖1為本發明一實施例之觸控面板的上視示意圖。 圖2為圖1之觸控面板的局部R的放大示意圖。 圖3為本發明一實施例之觸控面板的剖面示意圖。 圖4為本發明另一實施例之觸控面板的局部的放大示意圖。 圖5為本發明另一實施例之觸控面板的剖面示意圖。FIG. 1 is a top plan view of a touch panel according to an embodiment of the invention. 2 is an enlarged schematic view of a portion R of the touch panel of FIG. 1. 3 is a cross-sectional view of a touch panel according to an embodiment of the invention. FIG. 4 is an enlarged schematic view showing a portion of a touch panel according to another embodiment of the present invention. FIG. 5 is a cross-sectional view of a touch panel according to another embodiment of the present invention.
Claims (10)
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