TWI835629B - Touch panel - Google Patents
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- TWI835629B TWI835629B TW112114055A TW112114055A TWI835629B TW I835629 B TWI835629 B TW I835629B TW 112114055 A TW112114055 A TW 112114055A TW 112114055 A TW112114055 A TW 112114055A TW I835629 B TWI835629 B TW I835629B
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Abstract
Description
本發明有關於一種觸控面板，特別是有關於一種包括網格電極的觸控面板。 The present invention relates to a touch panel, and in particular to a touch panel including grid electrodes.
近年來，為了降低製作成本與阻抗，已發展出以金屬網格(metal mesh)製作成感測電極的觸控面板。常見的金屬網格電極是以週期性的菱形格子組成，然而由於週期性的菱形網格在搭配具有週期性像素排列的顯示面板，例如液晶顯示面板或有機發光顯示面板，容易產生可視的摩爾紋(moiré pattern)，造成使用者的不適。儘管目前業界有提出降低摩爾紋的不規則金屬網格的方案，但此方案仍存在許多缺點，例如觸控面板的耦合電容不均勻、阻抗不均勻以及視覺效果不佳等等，以致於無法滿足市售的產品規格，因此不易在實際產品中發現應用有不規則金屬網格的觸控面板。 In recent years, in order to reduce production costs and impedance, touch panels using metal mesh as sensing electrodes have been developed. Common metal grid electrodes are composed of periodic diamond-shaped lattice. However, because the periodic diamond-shaped grid is used with a display panel with a periodic pixel arrangement, such as a liquid crystal display panel or an organic light-emitting display panel, visible moiré patterns are easily produced. (moiré pattern), causing discomfort to the user. Although the industry has currently proposed an irregular metal grid solution to reduce moiré, this solution still has many shortcomings, such as uneven coupling capacitance, uneven impedance, and poor visual effects of the touch panel, making it unsatisfactory. Commercially available product specifications, so it is not easy to find touch panels with irregular metal grids in actual products.
根據本發明的一實施例，提供一種觸控面板，其包括一基板、一第一金屬層以及一第二金屬層。基板具有多個第一虛擬區域以及多個第二虛擬區域，其中第一虛擬區域彼此分隔開並以陣列方式排列，第二虛擬區域彼此分隔開並以陣列方式排列，第一虛擬區域與第二虛擬區域以錯位排列，且第一虛擬 區域的其中一個與相鄰的第二虛擬區域的其中一個在一第一方向上的投影與在一第二方向上的投影分別具有一第一間隔與一第二間隔。第一金屬層設置於基板上，且第一金屬層包括多條沿著第一方向延伸的第一網格電極，其中各第一網格電極包括多條第一格線與多個第一節點，且第一格線透過第一節點連接並圍繞出多個不規則的第一四邊形，使得各第一網格電極具有不規則形狀的一網格圖案，其中在觸控面板的一俯視圖中，各第一節點分別設置於對應的第一虛擬區域的其中一個中。第二金屬層設置於基板上並與第一金屬層電性絕緣，且第二金屬層包括多條沿著第二方向延伸的第二網格電極，其中第一網格電極在俯視圖中與第二網格電極交錯，各第二網格電極包括多條第二格線與多個第二節點，且第二格線透過第二節點連接並圍繞出多個第二四邊形，使得各第二網格電極具有不規則形狀的另一網格圖案，其中在俯視圖中，各第二節點分別設置於對應的第二虛擬區域的其中一個中。 According to an embodiment of the present invention, a touch panel is provided, which includes a substrate, a first metal layer and a second metal layer. The substrate has a plurality of first virtual areas and a plurality of second virtual areas, wherein the first virtual areas are separated from each other and arranged in an array, the second virtual areas are separated from each other and arranged in an array, and the first virtual areas are The second virtual area is arranged in a staggered manner, and the first virtual area A projection in a first direction and a projection in a second direction of one of the regions and one of the adjacent second virtual regions have a first interval and a second interval respectively. The first metal layer is disposed on the substrate, and the first metal layer includes a plurality of first grid electrodes extending along the first direction, wherein each first grid electrode includes a plurality of first grid lines and a plurality of first nodes. , and the first grid lines are connected through the first nodes and surround a plurality of irregular first quadrilaterals, so that each first grid electrode has an irregularly shaped grid pattern, where in a top view of the touch panel , each first node is respectively disposed in one of the corresponding first virtual areas. The second metal layer is disposed on the substrate and is electrically insulated from the first metal layer, and the second metal layer includes a plurality of second grid electrodes extending along the second direction, wherein the first grid electrode is connected to the first grid electrode in a top view. Two grid electrodes are interlaced, each second grid electrode includes a plurality of second grid lines and a plurality of second nodes, and the second grid lines are connected through the second nodes and surround a plurality of second quadrilaterals, so that each second grid electrode The two grid electrodes have another grid pattern of irregular shape, wherein in the top view, each second node is respectively disposed in one of the corresponding second virtual areas.
1,1a,1b:觸控面板 1,1a,1b:Touch panel
12:基板 12:Substrate
14:第一金屬層 14: First metal layer
141:第一網格電極 141: First grid electrode
142:第一虛設電極 142: First dummy electrode
16:第二金屬層 16: Second metal layer
161:第二網格電極 161: Second grid electrode
162:第二虛設電極 162: Second virtual electrode
18:第一連接電極 18: First connection electrode
20:第二連接電極 20: Second connection electrode
22:絕緣層 22:Insulation layer
a1,a2,b1,b2:寬度 a1,a2,b1,b2:width
CP:交點 CP: intersection point
D1:第一方向 D1: first direction
D2:第二方向 D2: second direction
L1:第一格線 L1: first grid line
L2:第二格線 L2: second grid line
L3:第三格線 L3: The third grid line
L4:第四格線 L4: The fourth grid line
P1:第一節點 P1: first node
P2:第二節點 P2: second node
P3:第三節點 P3: The third node
P4:第四節點 P4: The fourth node
Px1,Px2,Py1,Py2:節距 Px1,Px2,Py1,Py2: pitch
Q1:第一四邊形 Q1: First quadrilateral
Q2:第二四邊形 Q2: Second quadrilateral
R1:區域 R1:Region
S1:第一間隔 S1: first interval
S2:第二間隔 S2: second interval
S3:第三間隔 S3: The third interval
S4:第四間隔 S4: The fourth interval
S5:第五間隔 S5: The fifth interval
S6:第六間隔 S6: The sixth interval
SU:感測單元 SU: sensing unit
TD:俯視方向 TD: looking down direction
VR1:第一虛擬區域 VR1: The first virtual area
VR2:第二虛擬區域 VR2: The second virtual area
θ11,θ12,θ13,θ14,θ11’,θ12’,θ13’,θ14’,θ21,θ22,θ23,θ24,θ21’,θ22’,θ23’,θ24’,α,β,α’,β’:夾角 θ11,θ12,θ13,θ14,θ11',θ12',θ13',θ14',θ21,θ22,θ23,θ24,θ21',θ22',θ23',θ24',α,β,α',β': Angle
第1圖繪示本發明一實施例的觸控面板的俯視示意圖。 Figure 1 is a schematic top view of a touch panel according to an embodiment of the present invention.
第2圖與第3圖繪示第1圖的觸控面板於區域R1中的結構放大示意圖。 Figures 2 and 3 are enlarged schematic views of the structure of the touch panel in Figure 1 in region R1.
第4圖與第5圖繪示本發明不同實施例的觸控面板的剖視示意圖。 Figures 4 and 5 are schematic cross-sectional views of touch panels according to different embodiments of the present invention.
下文結合具體實施例和附圖對本發明的內容進行詳細描述，且為了使本發明的內容更加清楚和易懂，下文各附圖為可能為簡化的示意圖，且其中的元件可能並非按比例繪製。並且，附圖中的各元件的數量與尺寸僅為示意，並非用於限制本發明的範圍。 The content of the present invention will be described in detail below with reference to specific embodiments and drawings. In order to make the content of the present invention clearer and easier to understand, the following drawings are schematic diagrams that may be simplified, and the elements thereof may not be drawn to scale. Moreover, the number and size of each element in the drawings are only for illustration and are not used to limit the scope of the present invention.
請參考第1圖到第3圖，第1圖繪示本發明一實施例的觸控面板的俯視示意圖，且第2圖與第3圖繪示第1圖的觸控面板於區域R1中的結構放大示意圖。為了清楚顯示觸控面板的結構，第2圖顯示虛擬區域與網格電極之間的位置關係，且第3圖顯示網格電極的格線之間的夾角關係。並且，為清楚顯示不同金屬層的網格圖案，第1圖到第3圖中不同金屬層的格線以不同粗細顯示，但並非用於限制格線的線寬。如第1圖所示，本實施例所提供的觸控面板1包括一基板12、一第一金屬層14以及一第二金屬層16，其中第一金屬層14與第二金屬層16設置於基板12上，且第二金屬層16與第一金屬層14電性絕緣。第一金屬層14包括多條沿著第一方向D1延伸的第一網格電極141，且第二金屬層16包括多條沿著第二方向D2延伸的第二網格電極161。舉例來說，第一網格電極141與第二網格電極161的外圍輪廓可為長條形或其他合適的形狀，但不限於此。並且，第一網格電極141在觸控面板1的俯視圖中(也就是沿著觸控面板1的俯視方向TD觀看)與第二網格電極161交錯並產生電容耦合，以形成多個感測單元SU，用以偵測觸控物體的位置。每個感測單元SU可例如由一條第一網格電極141與一條第二網格電極161交錯形成。舉例來說，第一網格電極141與第二網格電極161可分別為觸控面板1中用於傳送驅動訊號的驅動電極與用於接收感應訊號的感應電極，或反之亦可。
Please refer to Figures 1 to 3. Figure 1 illustrates a top view of a touch panel according to an embodiment of the present invention, and Figures 2 and 3 illustrate the touch panel of Figure 1 in area R1. Enlarged diagram of the structure. In order to clearly show the structure of the touch panel, Figure 2 shows the positional relationship between the virtual area and the grid electrodes, and Figure 3 shows the angle relationship between the grid lines of the grid electrodes. Moreover, in order to clearly display the grid patterns of different metal layers, the grid lines of different metal layers in Figures 1 to 3 are displayed with different thicknesses, but this is not used to limit the line width of the grid lines. As shown in Figure 1, the
基板12可用於承載第一金屬層14與第二金屬層16。基板12可例如包括透明基板、顯示面板或其他硬質基板。透明基板的材料可例如包括玻璃基板、塑膠基板、壓克力基板、石英基板、藍寶石基板或其他合適的基板材料。當基板12包括顯示面板，第一金屬層14與第二金屬層16可形成於顯示面板的顯示面上或顯示面板中，或分別形成於顯示面板內與外。第一金屬層14與第二金屬層
16可例如包括金、銀、銅、鋁、鎳、鋅、其他合適的材料或上述的合金或組合。
The
如第1圖與第2圖所示，各第一網格電極141可包括多條第一格線L1與多個第一節點P1，且第一格線L1透過第一節點P1連接並圍繞出多個第一四邊形Q1，使得各第一網格電極141具有不規則形狀的網格圖案。並且，各第二網格電極161包括多條第二格線L2與多個第二節點P2，且第二格線L2透過第二節點P2連接並圍繞出多個第二四邊形Q2，使得各第二網格電極161具有不規則形狀的網格圖案。由於第一網格電極141與第二網格電極161可分別具有不具週期性的不規則網格圖案，因此不易與顯示面板中週期性排列的像素干涉出摩爾紋。
As shown in Figures 1 and 2, each
具體來說，如第2圖所示，一個第一節點P1可與四條第一格線L1連接，且四條第一格線L1可圍繞出一個第一四邊形Q1。並且，每個第一四邊形Q1可為不規則的四邊形，例如，其兩相對側邊不平行也不具有相同長度，因此第一四邊形Q1可拼接形成不具週期性的不規則網格圖案。任兩相鄰的第一四邊形Q1可例如彼此不相同。每個第一節點P1可分別為第一四邊形Q1的一個角落，且連接於兩相鄰的第一節點P1之間的第一格線L1可作為第一四邊形Q1的一側邊。在一些實施例中，一部分的第一格線L1可例如僅與最外側的第一四邊形Q1的第一節點P1連接。同理，一個第二節點P2可與四條第二格線L2連接，且四條第二格線L2可圍繞出一個第二四邊形Q2。每個第二四邊形Q2可為不規則的四邊形，例如，其兩相對側邊不平行也不具有相同長度，因此第二四邊形Q2可拼接形成不具週期性的不規則網格圖案。任兩相鄰的第二四邊形Q2可例如彼此不相同。每個第二節點P2可分別為第二四邊形Q2的一個角落，且連接於兩相鄰的第二節點P2之間的第二格線L2可作為第二四邊形Q2的一側邊。在一些實施例中，一部分的第二格線L2可例如僅與最外側的第二四邊形Q2的第二節點P2連接。需說明
的是，由於第一網格電極141與第二網格電極161皆由四邊形所形成，因此第一網格電極141的阻抗可類似或相同於第二網格電極161的阻抗，使得觸控面板1可具有均勻的電性。並且，由於節點(例如第一節點P1或第二節點P2)與多條格線(例如第一格線L1或第二格線L2)可例如透過微影製程與蝕刻製程所形成，因此受限於製程的限制，節點的寬度可例如稍微大於格線的線寬，但不以此為限。第一格線L1的線寬可例如相同於第二格線L2的線寬。
Specifically, as shown in Figure 2, a first node P1 can be connected to four first grid lines L1, and the four first grid lines L1 can surround a first quadrilateral Q1. Moreover, each first quadrilateral Q1 may be an irregular quadrilateral. For example, its two opposite sides are neither parallel nor have the same length. Therefore, the first quadrilateral Q1 may be spliced to form an irregular grid without periodicity. pattern. Any two adjacent first quadrilaterals Q1 may, for example, be different from each other. Each first node P1 may be a corner of the first quadrilateral Q1, and the first grid line L1 connected between two adjacent first nodes P1 may be a side of the first quadrilateral Q1. . In some embodiments, a part of the first grid line L1 may, for example, be connected only to the first node P1 of the outermost first quadrilateral Q1. Similarly, a second node P2 can be connected to four second grid lines L2, and the four second grid lines L2 can surround a second quadrilateral Q2. Each second quadrilateral Q2 may be an irregular quadrilateral. For example, its two opposite sides are not parallel and have the same length. Therefore, the second quadrilateral Q2 may be spliced to form an irregular grid pattern without periodicity. Any two adjacent second quadrilaterals Q2 may, for example, be different from each other. Each second node P2 may be a corner of the second quadrilateral Q2, and the second grid line L2 connected between two adjacent second nodes P2 may be a side of the second quadrilateral Q2. . In some embodiments, a portion of the second grid line L2 may, for example, only be connected to the second node P2 of the outermost second quadrilateral Q2. Need explanation
It is worth mentioning that since the
在觸控面板1的俯視圖中(沿著俯視方向TD觀看)，第一四邊形Q1與第二四邊形Q2可錯位設置(staggered manner)，使得一個第一四邊形Q1中僅設置有一個第二節點P2，且一個第二四邊形Q2中僅設置有一個第一節點P1。在本實施例中，在俯視圖中相互交錯的第一四邊形Q1與第二四邊形Q2可例如彼此不相同。 In a top view of the touch panel 1 (viewed along the top view direction TD), the first quadrilateral Q1 and the second quadrilateral Q2 can be arranged in a staggered manner, so that only one first quadrilateral Q1 is provided with A second node P2, and only one first node P1 is provided in a second quadrilateral Q2. In this embodiment, the first quadrilateral Q1 and the second quadrilateral Q2 that are interlaced with each other in a top view may, for example, be different from each other.
此外，如第2圖所示，第一格線L1在俯視圖中(沿著俯視方向TD觀看)可分別與第二格線L2交錯，使得第一網格電極141的其中一個與第二網格電極161的其中一個交錯形成的一個感測單元SU可具有多個交點CP。在一些實施例中，由於第一格線L1的其中一個可僅與對應的第二格線L2的其中一個形成一個交點CP，因此不同感測單元SU中的交點CP的數量可彼此相同或相近，但不限於此。透過相同或相近的交點CP的數量，可使不同感測單元SU的耦合電容相近或一致，以符合所應用的產品需求。
In addition, as shown in FIG. 2 , the first grid lines L1 may respectively intersect with the second grid lines L2 in a top view (viewed along the top view direction TD), so that one of the
下文將進一步具體說明形成第一四邊形Q1與第二四邊形Q2的方式，使得第一網格電極141與第二網格電極161的不規則網格圖案皆能夠由不規則的四邊形所形成。如第2圖所示，基板12可具有多個用以限制第一節點P1位置
的第一虛擬區域VR1以及多個用以限制第二節點P2位置的第二虛擬區域VR2，其中第一虛擬區域VR1彼此分隔開並以陣列方式排列，第二虛擬區域VR2彼此分隔開並以陣列方式排列，第一虛擬區域VR1與第二虛擬區域VR2以錯位排列，且第二虛擬區域VR2的其中一個與相鄰的一個第一虛擬區域VR1在第一方向D1上的投影與在第二方向D2上的投影分別具有第一間隔S1與第二間隔S2。在俯視圖中，各第一節點P1分別設置於對應的一個第一虛擬區域VR1中，且各第二節點P2分別設置於對應的一個第二虛擬區域VR2中，使得各第一節點P1可不與第二格線L2重疊，且各第二節點P2可不與第一格線L1重疊。由於第一節點P1與第二格線L2重疊及/或第二節點P2與第一格線L1重疊所產生的耦合電容會不同於第一格線L1與第二格線L2重疊所產生的耦合電容，因此透過上述設計，可降低或避免耦合電容異常或不均勻的情況發生。
The method of forming the first quadrilateral Q1 and the second quadrilateral Q2 will be further described in detail below, so that the irregular mesh patterns of the
值得說明的是，第一間隔S1與第二間隔S2可大於0，例如大於第一金屬層14與第二金屬層16在俯視圖中的對位誤差。第一金屬層14與第二金屬層16的對位誤差可例如為將第一金屬層14與第二金屬層16貼合的製程誤差，或是對第一金屬層14或第二金屬層16圖案化時的製程誤差，但不限於此。換言之，第一虛擬區域VR1與第二虛擬區域VR2在第一方向D1的投影不重疊，且第一虛擬區域VR1與第二虛擬區域VR2在第二方向D2的投影不重疊。在一些實施例中，第一間隔S1可相同或不同於第二間隔S2。需說明的是，間隔(例如，第一間隔S1或第二間隔S2)的寬度需大於節點(例如，第一節點P1或第二節點P2)的寬度，使得位於相鄰的第一虛擬區域VR1與第二虛擬區域VR2中的第一節點P1與第二節點P2在第一方向D1或第二方向D2上的投影不會相互重疊，從而可避免耦合電容異常或不均勻的問題。此外，間隔(例如，第一間隔S1或第二間隔S2)的寬度可小於第一虛擬區域VR1的寬度及/或第二虛擬區域VR2的寬度。
It is worth noting that the first distance S1 and the second distance S2 may be greater than 0, for example, greater than the alignment error of the
如第2圖所示，第二虛擬區域VR2的其中一個以及在第一方向D1上與其相鄰的另一個第一虛擬區域VR1在第一方向D1上的投影可具有第三間隔S3，且第二虛擬區域VR2的其中一個以及在第二方向D2上與其相鄰的另一個第一虛擬區域VR1在第二方向D2上的投影可具有第四間隔S4。舉例來說，第三間隔S3可相同或不同於第一間隔S1，及/或第四間隔S4可相同或不同於第二間隔S2。 As shown in FIG. 2 , the projection of one of the second virtual areas VR2 and the other first virtual area VR1 adjacent thereto in the first direction D1 in the first direction D1 may have a third interval S3, and the The projection of one of the two virtual regions VR2 and the other first virtual region VR1 adjacent thereto in the second direction D2 in the second direction D2 may have a fourth interval S4. For example, the third interval S3 may be the same as or different from the first interval S1, and/or the fourth interval S4 may be the same as or different from the second interval S2.
在本實施例中，第一虛擬區域VR1可彼此相同，也就是在第一方向D1上具有相同的寬度，且在第二方向D2上具有相同的寬度。同理，第二虛擬區域VR2也可彼此相同，亦即在第一方向D1上具有相同的寬度，且在第二方向D2上具有相同的寬度。此外，依據實際設計需求，第一虛擬區域VR1可相同或不同於第二虛擬區域VR2。舉例來說，各第一虛擬區域VR1的面積可大於0，且各第二虛擬區域VR2的面積可大於0。 In this embodiment, the first virtual regions VR1 may be the same as each other, that is, have the same width in the first direction D1 and the same width in the second direction D2. Similarly, the second virtual regions VR2 can also be the same as each other, that is, have the same width in the first direction D1 and the same width in the second direction D2. In addition, according to actual design requirements, the first virtual area VR1 may be the same as or different from the second virtual area VR2. For example, the area of each first virtual region VR1 may be greater than 0, and the area of each second virtual region VR2 may be greater than 0.
如第2圖所示，第一虛擬區域VR1在第一方向D1上具有節距Px1，在第二方向D2上具有節距Py1，且第二虛擬區域VR2在第一方向D1上具有節距Px2，而在第二方向D2上具有節距Py2。由於第一虛擬區域VR1與第二虛擬區域VR2可以相同的陣列方式排列，因此節距Px1可相同於節距Px2，且節距Py1可相同於節距Py2。本文中的“在第一方向D1上的節距”可指在第一方向D1上兩相鄰第一虛擬區域VR1(或第二虛擬區域VR2)的左側邊(或中心點或右側邊)之間的距離，而“在第二方向D2上的節距”可指在第二方向D2上兩相鄰第一虛擬區域VR1(或第二虛擬區域VR2)的上側邊(或中心點或下側邊)之間的距離。舉例來說，第一虛擬區域VR1在第一方向D1上的寬度a1與節距Px1的比值可小於0.6，且第二虛擬區域VR2在第一方向D1上的寬度a2與節距Px2的比值可小於0.6。此外， 第一虛擬區域VR1在第二方向D2上的寬度b1與節距Py1的比值可小於0.6，且第二虛擬區域VR2在第二方向D2上的寬度b2與節距Py2的比值可小於0.6。 As shown in Figure 2, the first virtual area VR1 has a pitch Px1 in the first direction D1 and a pitch Py1 in the second direction D2, and the second virtual area VR2 has a pitch Px2 in the first direction D1. , and has a pitch Py2 in the second direction D2. Since the first virtual region VR1 and the second virtual region VR2 can be arranged in the same array, the pitch Px1 can be the same as the pitch Px2, and the pitch Py1 can be the same as the pitch Py2. The "pitch in the first direction D1" herein may refer to the left side (or center point or right side) of two adjacent first virtual areas VR1 (or second virtual area VR2) in the first direction D1. The distance between them, and the "pitch in the second direction D2" may refer to the upper side (or center point or lower edge) of two adjacent first virtual areas VR1 (or second virtual area VR2) in the second direction D2. sides). For example, the ratio of the width a1 of the first virtual region VR1 in the first direction D1 to the pitch Px1 may be less than 0.6, and the ratio of the width a2 of the second virtual region VR2 in the first direction D1 to the pitch Px2 may be Less than 0.6. also, The ratio of the width b1 of the first virtual region VR1 in the second direction D2 to the pitch Py1 may be less than 0.6, and the ratio of the width b2 of the second virtual region VR2 in the second direction D2 to the pitch Py2 may be less than 0.6.
需說明的是，如第2圖所示，設置於同一列及/或同一行的第一虛擬區域VR1中的第一節點P1可分別位於對應的第一虛擬區域VR1中的不同位置，例如第一節點P1與對應的第一虛擬區域VR1沿著第二方向D2延伸的上側邊(或下側邊)之間的距離彼此不同，且第一節點P1與對應的第一虛擬區域VR1沿著第一方向D1延伸的左側邊(或右側邊)之間的距離彼此不同。透過此設計，同一行與同一列的第一四邊形Q1可具有不規則形狀，從而可形成不規則的網格圖案。舉例來說，每個第一虛擬區域VR1可具有多個均勻分布或呈陣列排列的點，且每個第一虛擬區域VR1中的每一點的位置與其他第一虛擬區域VR1中的對應一點的位置相同。也就是，此點與其第一虛擬區域VR1的上側邊與左側邊的距離分別相同於對應點與對應第一虛擬區域VR1的上側邊與左側邊的距離。透過隨機選取第一虛擬區域VR1中不同位置的點作為第一節點P1，可使第一格線L1所連接出的第一四邊形Q1具有不規則形狀，並形成不規則網格圖案。同理，設置於同一列及/或同一行的第二虛擬區域VR2中的第二節點P2可分別位於對應的第二虛擬區域VR2中的不同位置，例如第二節點P2與對應的第二虛擬區域VR2沿著第二方向D2延伸的上側邊(或下側邊)之間的距離彼此不同，且第二節點P2與對應的第二虛擬區域VR2沿著第一方向D1延伸的左側邊(或右側邊)之間的距離彼此不同。透過此設計，同一行與同一列的第二四邊形Q2可具有不規則形狀，從而可形成不規則的網格圖案。形成不規則第二四邊形Q2的方式可例如與上述形成第一四邊形Q1的方式相同或類似，因此在此不多贅述。第一虛擬區域VR1及/或第二虛擬區域VR2可例如具有100×100或1000×1000的點或其他合適的點陣列，且節點可為從點陣列中隨機選取其中的一點。 It should be noted that, as shown in Figure 2, the first nodes P1 in the first virtual region VR1 arranged in the same column and/or the same row can be located at different positions in the corresponding first virtual region VR1, for example, the first node P1 in the first virtual region VR1. The distance between a node P1 and the upper side (or lower side) of the corresponding first virtual region VR1 extending along the second direction D2 is different from each other, and the first node P1 and the corresponding first virtual region VR1 are along The distances between the left sides (or right sides) extending in the first direction D1 are different from each other. Through this design, the first quadrilaterals Q1 in the same row and column can have irregular shapes, thereby forming an irregular grid pattern. For example, each first virtual region VR1 may have a plurality of points evenly distributed or arranged in an array, and the position of each point in each first virtual region VR1 is consistent with the position of a corresponding point in other first virtual regions VR1 Same location. That is, the distance between this point and the upper side and left side of the first virtual region VR1 is the same as the distance between the corresponding point and the upper side and left side of the corresponding first virtual region VR1 respectively. By randomly selecting points at different positions in the first virtual region VR1 as the first node P1, the first quadrilateral Q1 connected by the first grid line L1 can have an irregular shape and form an irregular grid pattern. Similarly, the second nodes P2 arranged in the second virtual area VR2 in the same column and/or the same row can be located at different positions in the corresponding second virtual area VR2, for example, the second node P2 and the corresponding second virtual area VR2 The distances between the upper sides (or lower sides) of the region VR2 extending along the second direction D2 are different from each other, and the second node P2 and the left side (or the lower side) of the corresponding second virtual region VR2 extending along the first direction D1 are different from each other. or right side) are different from each other. Through this design, the second quadrilateral Q2 in the same row and column can have an irregular shape, thereby forming an irregular grid pattern. The method of forming the irregular second quadrilateral Q2 may be, for example, the same as or similar to the above-mentioned method of forming the first quadrilateral Q1 , and therefore will not be described in detail here. The first virtual area VR1 and/or the second virtual area VR2 may, for example, have 100×100 or 1000×1000 points or other suitable point arrays, and the node may be a point randomly selected from the point array.
如第3圖所示，在一個第一四邊形Q1中，對應同一第一節點P1的四條第一格線L1可具有四個夾角θ11、θ12、θ13、θ14(或夾角θ11’、θ12’、θ13’、θ14’)，其中每個夾角θ11、θ12、θ13、θ14為所述四條第一格線L1的其中任兩相鄰之間的夾角，且夾角θ11、θ12、θ13、θ14(或夾角θ11’、θ12’、θ13’、θ14’)的其中任兩個可彼此不相同。夾角θ11、θ12、θ13、θ14(或夾角θ11’、θ12’、θ13’、θ14’)的其中一個可例如大於30度。此外，兩個相鄰的第一四邊形Q1中朝向相同方向的兩夾角(或對應兩相鄰第一節點P1並朝向相同方向的兩夾角)(例如，夾角θ11與夾角θ11’、夾角θ12與夾角θ12’、夾角θ13與夾角θ13’或夾角θ14與夾角θ14’)可彼此不相同，以降低第一四邊形Q1的一致性，從而減少摩爾紋的產生。在一些實施例中，上述兩個第一四邊形Q1中朝向相同方向的兩夾角可例如分別為大於90度的鈍角與小於90度的銳角，但不限於此。 As shown in Figure 3, in a first quadrilateral Q1, the four first grid lines L1 corresponding to the same first node P1 may have four included angles θ11, θ12, θ13, θ14 (or included angles θ11', θ12' , θ13', θ14'), where each included angle θ11, θ12, θ13, θ14 is the angle between any two adjacent ones of the four first grid lines L1, and the included angle θ11, θ12, θ13, θ14 (or Any two of the included angles θ11', θ12', θ13', θ14') may be different from each other. One of the included angles θ11, θ12, θ13, and θ14 (or the included angles θ11', θ12', θ13', and θ14') may be greater than 30 degrees, for example. In addition, two included angles facing the same direction in two adjacent first quadrilaterals Q1 (or two included angles corresponding to two adjacent first nodes P1 and facing the same direction) (for example, included angle θ11, included angle θ11', included angle θ12 The included angle θ12', the included angle θ13 and the included angle θ13', or the included angle θ14 and the included angle θ14') may be different from each other to reduce the consistency of the first quadrilateral Q1, thereby reducing the occurrence of moiré patterns. In some embodiments, the two included angles facing the same direction in the two first quadrilaterals Q1 may be, for example, an obtuse angle greater than 90 degrees and an acute angle less than 90 degrees, but are not limited thereto.
同樣地，在一個第二四邊形Q2中，對應同一第二節點P2的四條第二格線L2可具有四個夾角θ21、θ22、θ23、θ24(或夾角θ21’、θ22’、θ23’、θ24’)，其中每個夾角θ21、θ22、θ23、θ24為所述四條第二格線L2的其中任兩相鄰之間的夾角，且夾角θ21、θ22、θ23、θ24(或夾角θ21’、θ22’、θ23’、θ24’)的其中任兩個可彼此不相同。夾角θ21、θ22、θ23、θ24(或夾角θ21’、θ22’、θ23’、θ24’)的其中一個可例如大於30度。此外，兩個相鄰的第二四邊形Q2中朝向相同方向的兩夾角(或對應兩相鄰第二節點P2並朝向相同方向的兩夾角)(例如，夾角θ21與夾角θ21’、夾角θ22與夾角θ22’、夾角θ23與夾角θ23’或夾角θ24與夾角θ24’)可彼此不相同。在一些實施例中，上述兩個第二四邊形Q2中朝向相同方向的兩夾角可例如分別為大於90度的鈍角與小於90度的銳角，但不限於此。 Similarly, in a second quadrilateral Q2, the four second grid lines L2 corresponding to the same second node P2 may have four included angles θ21, θ22, θ23, θ24 (or included angles θ21', θ22', θ23', θ24'), where each included angle θ21, θ22, θ23, θ24 is the angle between any two adjacent ones of the four second grid lines L2, and the included angle θ21, θ22, θ23, θ24 (or the included angle θ21', Any two of θ22', θ23', θ24') may be different from each other. One of the included angles θ21, θ22, θ23, and θ24 (or the included angles θ21', θ22', θ23', and θ24') may be greater than 30 degrees, for example. In addition, two included angles facing the same direction in two adjacent second quadrilaterals Q2 (or two included angles corresponding to two adjacent second nodes P2 and facing the same direction) (for example, the included angle θ21 and the included angle θ21', the included angle θ22 and the included angle θ22', the included angle θ23 and the included angle θ23', or the included angle θ24 and the included angle θ24') may be different from each other. In some embodiments, the two included angles facing the same direction in the two second quadrilaterals Q2 may be, for example, an obtuse angle greater than 90 degrees and an acute angle less than 90 degrees, but are not limited thereto.
另外，在俯視圖中(沿著俯視方向TD觀看)，對應一個交點CP的第一格線L1與第二格線L2可形成兩對夾角(一對夾角α與一對夾角β或一對夾角α’與一對夾角β’)，且每對夾角α(或夾角β、α’、β’)彼此相對且相同。並且，相鄰的夾角α與夾角β(或夾角α’與夾角β’)的總和為180度。在一些實施例中，對應兩個相鄰的交點CP且朝向相同方向的兩夾角(例如，夾角α與夾角α’或夾角β與夾角β’)可彼此不相同。 In addition, in a top view (viewed along the top view direction TD), the first grid line L1 and the second grid line L2 corresponding to an intersection point CP can form two pairs of included angles (a pair of included angles α and a pair of included angles β or a pair of included angles α ' and a pair of included angles β'), and each pair of included angles α (or included angles β, α', β') are opposite and the same to each other. Furthermore, the sum of adjacent angles α and angles β (or angles α’ and angles β’) is 180 degrees. In some embodiments, two included angles corresponding to two adjacent intersection points CP and facing the same direction (for example, the included angle α and the included angle α' or the included angle β and the included angle β') may be different from each other.
值得說明的是，透過上述的節點與格線的設計，節點位置與格線長度與夾角可不具重複性與週期性，使得第一網格電極141與第二網格電極161可具有不具週期性的不規則網格圖案，因此不易與顯示面板中週期性排列的像素干涉出摩爾紋，從而提升觸控面板1的穿透度或光學特性。並且，透過於第一金屬層14與第二金屬層16中皆設計具有四邊形的網格，可使第一網格電極141的阻抗類似或相同於第二網格電極161的阻抗，且不同的感測單元SU的電容也可類似或相同，從而可維持觸控面板1在電性上的均勻度與穩定度，並符合產品應用的規格要求。此外，透過上述的網格設計，第一金屬層14與第二金屬層16之間的對位誤差並不會影響觸控面板1的視覺效果，從而可降低製作困難度或提升製作效率。
It is worth noting that through the above-mentioned design of nodes and grid lines, the node positions, grid line lengths and included angles may not be repeatable or periodic, so that the
如第1圖與第2圖所示，第一金屬層14可選擇性另包括多個第一虛設電極142，沿著第一方向D1延伸，且各第一網格電極141分別設置於兩相鄰的第一虛設電極142之間並與第一虛設電極142以一第五間隔S5分隔開。沿著俯視方向TD觀看，第一虛設電極142可與第二網格電極161交錯。在一實施例中，第一虛設電極142可具有不規則形狀的網格圖案。具體來說，第一虛設電極142可包括多個第三格線L3與多個第三節點P3，且第三格線L3可透過第三節點P3連接並
圍繞出多個不規則的四邊形，使得各第一虛設電極142具有不規則形狀的網格圖案。由於第三節點P3可設置於第一虛擬區域VR1中，且第一虛設電極142的四邊形的條件可類似或相同於第一四邊形Q1的條件，因此在此不多贅述。需說明的是，鄰近第一網格電極141的第三格線L3可與第一網格電極141中最外側的第一格線L1沿著同一直線延伸，使得第一網格電極141與第一虛設電極142可形成近似不規則四邊形的圖案，因此第一網格電極141與第一虛設電極142可呈現出均勻的視覺效果。
As shown in FIGS. 1 and 2 , the
在本實施例中，第二金屬層16可選擇性另包括多個第二虛設電極162，沿著第二方向D2延伸，且各第二網格電極161分別設置於兩相鄰的第二虛設電極162之間並與第二虛設電極162以一第六間隔S6分隔開。並且，沿著俯視方向TD觀看，第二虛設電極162可與第一虛設電極142以及第一網格電極141交錯。具體來說，第二虛設電極162可包括多個第四格線L4與多個第四節點P4，且第四格線L4可透過第四節點P4連接並圍繞出多個不規則的四邊形，使得各第二虛設電極162具有不規則形狀的網格圖案。由於第四節點P4可設置於第二虛擬區域VR2中，且第二虛設電極162的四邊形的條件可類似或相同於第二四邊形Q2的條件，因此在此不多贅述。需說明的是，鄰近第二網格電極161的第四格線L4可與第二網格電極161中最外側的第二格線L2沿著同一直線延伸，使得第二網格電極161與第二虛設電極162可形成近似不規則四邊形的圖案，因此第二網格電極161與第二虛設電極162可呈現出均勻的視覺效果。
In this embodiment, the
在一些實施例中，如第1圖所示，觸控面板1可選擇性包括多個第一連接電極18以及多個第二連接電極20，其中第一連接電極18可分別設置並連接於第一網格電極141的一端或兩端，用以將第一網格電極141電性連接至接墊或
控制元件，且第二連接電極20可分別設置並連接於第二網格電極161的一端或兩端，用以將第二網格電極161電性連接至接墊或控制元件。
In some embodiments, as shown in FIG. 1 , the
請參考第4圖與第5圖，其繪示本發明不同實施例的觸控面板的剖視示意圖。如第4圖所示，在一實施例的觸控面板1a中，第一金屬層14與第二金屬層16可設置於基板12的同一側，且觸控面板還可包括一絕緣層22，設置於第一金屬層14與第二金屬層16之間，用以將第一金屬層14與第二金屬層16電性絕緣。本發明第一金屬層14與第二金屬層16設置於基板12上的順序不以第4圖為限，兩者的位置也可彼此互換。本發明的觸控面板的堆疊結構不以此為限。如第5圖所示，在另一實施例的觸控面板1b中，第一金屬層14與第二金屬層16可分別設置於基板12的兩相對側，因此基板12可用於將第一金屬層14與第二金屬層16電性絕緣。在一些實施例中，第一金屬層14與第二金屬層16也可分別先形成於不同基板上，再透過黏貼方式彼此貼合，但不以此為限。
Please refer to FIGS. 4 and 5 , which illustrate schematic cross-sectional views of touch panels according to different embodiments of the present invention. As shown in Figure 4, in the touch panel 1a of an embodiment, the
綜上所述，在本發明的觸控面板中，由於節點位置和格線的長度與夾角皆不具重複性與週期性，使得第一網格電極與第二網格電極可具有不具週期性的不規則網格圖案，因此不易與顯示面板中週期性排列的像素干涉出摩爾紋。並且，透過於第一金屬層與第二金屬層中皆設計具有四邊形的網格，可使第一網格電極的阻抗類似或相同於第二網格電極的阻抗，且不同的感測單元的電容也可類似或相同，從而可維持觸控面板在電性上的均勻度與穩定度，並符合產品應用的規格要求。 To sum up, in the touch panel of the present invention, since the node positions and the lengths and angles of the grid lines are not repeatable or periodic, the first grid electrode and the second grid electrode can have non-periodic patterns. The irregular grid pattern prevents moiré patterns from interfering with the periodically arranged pixels in the display panel. Moreover, by designing quadrilateral meshes in both the first metal layer and the second metal layer, the impedance of the first mesh electrode can be similar or the same as the impedance of the second mesh electrode, and the impedance of different sensing units can be The capacitances can also be similar or identical, thereby maintaining the electrical uniformity and stability of the touch panel and meeting the specifications of the product application.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 The above are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the patentable scope of the present invention shall fall within the scope of the present invention.
1:觸控面板 1:Touch panel
12:基板 12:Substrate
14:第一金屬層 14: First metal layer
141:第一網格電極 141: First grid electrode
142:第一虛設電極 142: First dummy electrode
16:第二金屬層 16: Second metal layer
161:第二網格電極 161: Second grid electrode
162:第二虛設電極 162: Second dummy electrode
18:第一連接電極 18: First connection electrode
20:第二連接電極 20: Second connection electrode
D1:第一方向 D1: first direction
D2:第二方向 D2: second direction
R1:區域 R1:Region
SU:感測單元 SU: sensing unit
TD:俯視方向 TD: looking down direction
Claims (12)
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