TW202001528A - Touch panel - Google Patents

Abstract

A touch panel includes a first conductive mesh layer, a second conductive mesh layer, and an insulating layer. The first conductive mesh layer includes at least one first touch electrode and at least one first dummy electrode, respective having a plurality of meshes formed of a conductive material. The first touch electrode and the first dummy electrode are electrically isolated from each other. At least two of the meshes of the first dummy electrode have different shapes. The insulating layer separates the first conductive mesh layer and the second conductive mesh layer from each other.

Description

Touch panel

The invention relates to a touch panel.

Related products related to touch panels have been widely used in daily work and life. Generally speaking, the structure of the touch panel includes a sensing area formed on the surface of the substrate. The sensing area is used to sense a human finger or a writing tool similar to a pen In order to achieve the touch effect.

In current mobile terminal touch panels, transparent conductive materials (such as indium tin oxide) are indispensable materials, but transparent conductive materials also have problems such as high cost and difficulty in recycling. In order to get rid of the price competition of traditional transparent conductive material touch panels and to deal with the current industry development bottlenecks, manufacturers seek new material technologies to replace transparent conductive materials to reduce costs and obtain profits.

Metal mesh touch panel technology has rapidly gained popularity among mainstream manufacturers due to its advantages of low resistivity, easy material acquisition, and simple manufacturing process, and various large-size panels. However, the metal grid also has several shortcomings. For example, the grid shape of the metal grid is prone to Moiré patterns, which results in poor visual effects and is difficult to be widely used in various products.

In various embodiments of the present invention, in at least one conductive mesh layer, the shape of the conductive mesh in the non-functional area is irregular, which can avoid the moiré problem caused by the regular pattern setting of the entire layer.

According to some embodiments of the present invention, the touch panel includes a first conductive mesh layer, a second conductive mesh layer, and an insulating layer. The first conductive mesh layer includes at least one first touch electrode and at least one first dummy electrode, each having a plurality of meshes made of conductive materials. The first touch electrode and the first dummy electrode are electrically separated from each other, wherein at least two grids of the first dummy electrode have different shapes. The insulating layer separates the first conductive mesh layer from the second conductive mesh layer.

In some embodiments of the present invention, the first dummy electrode has a plurality of grid nodes, and the grid nodes are arranged periodically.

In some embodiments of the present invention, the shape of at least one grid of the first dummy electrode is different from the shape of any grid of the first touch electrode.

In some embodiments of the present invention, the first dummy electrode has a plurality of grid nodes, the first touch electrode has a plurality of grid nodes, and the period of the grid nodes of the first dummy electrode is the same as or different from that of the first touch Control the period of the grid node of the electrode.

In some embodiments of the present invention, the grid shape of the first touch electrodes is the same.

In some embodiments of the present invention, the second conductive grid layer includes at least one second touch electrode and at least one second dummy electrode, each having a plurality of grids made of conductive material, the second touch electrode and the second The two dummy electrodes are electrically separated from each other.

In some embodiments of the present invention, at least two grids of the second dummy electrode have different shapes.

In some embodiments of the present invention, the second dummy electrode has a plurality of grid nodes, and the grid nodes are arranged periodically.

In some embodiments of the present invention, the shape of at least one grid of the second dummy electrode is different from the shape of any grid of the second touch electrode.

In some embodiments of the present invention, the second dummy electrode has a plurality of mesh nodes, the second touch electrode has a plurality of mesh nodes, and the period of the mesh nodes of the second dummy electrode is the same as or different from that of the second touch The period of the grid node of the electrode.

In some embodiments of the present invention, the grid shape of the second touch electrodes is the same.

In some embodiments of the present invention, the first touch electrode has a plurality of grid nodes, the second touch electrode has a plurality of grid nodes, and the projection of the grid nodes of the first touch electrode on the upper surface of the insulating layer The projection of the grid node overlapping or not overlapping the second touch electrode on the upper surface of the insulating layer.

In some embodiments of the present invention, the first dummy electrode has a plurality of grid nodes, the second dummy electrode has a plurality of grid nodes, and the projections of the grid nodes of the first dummy electrode on the upper surface of the insulating layer overlap or not The projection of the grid node overlapping the second dummy electrode on the upper surface of the insulating layer.

In some embodiments of the present invention, the insulating layer is a rigid substrate, a flexible substrate, or an adhesive layer.

100‧‧‧Touch panel

110‧‧‧The first conductive grid layer

112‧‧‧First touch electrode

112a‧‧‧grid node

112b‧‧‧Grid lines

114‧‧‧The first dummy electrode

114a‧‧‧grid node

114b‧‧‧Grid lines

120‧‧‧Insulation

130‧‧‧Second conductive grid layer

132‧‧‧Second touch electrode

132a‧‧‧grid node

132b‧‧‧Grid lines

134‧‧‧Second dummy electrode

134a‧‧‧grid node

134b‧‧‧Grid lines

G1, G2‧‧‧Gap

UA, UA1, UA2 ‧‧‧ unit area

A1, A21, A22, A23 ‧‧‧ overlapping area

1A-1A‧‧‧line

FIG. 1A is a schematic cross-sectional view of a touch panel according to the first embodiment of the present invention.

FIG. 1B is a schematic top view of the touch panel in FIG. 1A.

FIG. 1C is a schematic top view of the first conductive mesh layer of the touch panel in FIG. 1B.

FIG. 1D is a schematic top view of the second conductive mesh layer of the touch panel in FIG. 1B.

FIG. 2A is a schematic top view of the first conductive mesh layer of the touch panel according to the second embodiment of the present invention.

FIG. 2B is a schematic top view of the second conductive mesh layer of the touch panel according to the second embodiment of the present invention.

FIG. 3A is a schematic top view of the first conductive mesh layer of the touch panel according to the third embodiment of the present invention.

FIG. 3B is a schematic top view of the second conductive mesh layer of the touch panel according to the third embodiment of the present invention.

FIG. 4A is a schematic top view of the first conductive mesh layer of the touch panel according to the fourth embodiment of the present invention.

FIG. 4B is a schematic top view of the second conductive mesh layer of the touch panel according to the fourth embodiment of the present invention.

In the following, a plurality of embodiments of the present invention will be disclosed in the form of diagrams. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some conventional structures and elements will be shown in a simple schematic manner in the drawings.

FIG. 1A is a schematic cross-sectional view of a touch panel 100 according to the first embodiment of the present invention. The touch panel 100 includes a first conductive mesh layer 110, a second conductive mesh layer 130, and an insulating layer 120. The insulating layer 120 separates the first conductive mesh layer 110 from the second conductive mesh layer 130. In this embodiment, the first conductive mesh layer 110 is, for example, a Y-axis (vertical axis) electrode of the touch panel 100, and the second conductive mesh layer 130 is, for example, an X-axis direction of the touch panel 100 (Horizontal axis) electrode.

FIG. 1B is a schematic top view of the touch panel 100 of FIG. 1A. Specifically, FIG. 1A is a cross-sectional view taken along the line 1A-1A of FIG. 1B. FIG. 1C is a schematic top view of the first conductive mesh layer 110 of the touch panel 100 of FIG. 1B. Also refer to Figures 1A to 1C. The first conductive grid layer 110 includes at least one first touch electrode 112 and at least one first dummy electrode 114, each having a plurality of grids made of conductive material. The first touch electrode 112 and the first dummy electrode 114 are electrically separated from each other. Specifically, there is a gap G1 between the first touch electrode 112 and the first dummy electrode 114 to separate the two. It is added that the first conductive mesh layer 110 is formed by patterning a complete conductive mesh material layer, wherein the layout range of the first touch electrode 112 is defined as a functional area, and the first The layout range of a dummy electrode 114 is defined as a non-functional area.

In some embodiments, the first conductive mesh layer 110 is formed by a plurality of unit areas UA1 arranged in a matrix, wherein each unit area UA1 covers one first touch electrode 112 and two first dummy electrodes 114, the first The touch electrode 112 is disposed between the two first dummy electrodes 114. The design of the first touch electrode 112 and the first dummy electrode 114 will be described below for only one unit area UA1.

The first touch electrode 112 has a plurality of grid nodes 112a (ie grid intersection points) and grid lines 112b (ie grid intersection lines) connecting the grid nodes 112a. In some embodiments, a complete grid definition is a closed grid composed of four grid nodes 112a and four grid lines 112b, and two adjacent complete grids share two grid nodes 112a and a grid line 112b, or share a grid node 112a, in other words, two adjacent grids are connected by two grid nodes 112a and a grid line 112b Aspect, or through a grid node 112a to form an aspect where the endpoints are connected.

The grid nodes 112a of the first touch electrode 112 are periodically set, that is, the landing points of the grid nodes 112a are arranged according to specific rules, for example: on the horizontal axis, two adjacent grid nodes 112a is separated by a first distance; and on the vertical axis, two adjacent grid nodes 112a are separated by a second distance, where the first distance may or may not be equal to the second distance, thereby allowing the grid node 112a At least the settings on the same axis are periodic. Overall, all grid nodes 112a are periodically arranged and distributed in a matrix pattern.

The grid lines 112b of the first touch electrode 112 are arranged regularly, that is, the grid lines 112b are designed with the same line shape, for example, any one of straight lines, polylines, arcs, curves, and cloud-shaped lines can be used to design . In this embodiment, the lines and lengths of the grid lines 112b of the complete grids of the first touch electrode 112 are the same, and the shapes of the complete grids of the first touch electrode 112 are the same. In this embodiment, taking a straight grid line 112b as an example, the shape of the grid is a rhombus. With this design, the overall capacitance value and resistance value of the first touch electrodes 112 in different unit areas UA1 can be made consistent. It is added that the first touch electrode 112 fails to form a complete grid line 112b. Since it does not form a complete electrical connection with other complete grids, its The effect of overall capacitance and resistance is negligible.

As described above, through the periodic setting of the grid nodes 112a and the regular setting of the grid lines 112b, all the complete grids in the first touch electrodes 112 have the same shape and are regularly arranged.

The first dummy electrode 114 has a plurality of grid nodes 114a (ie grid intersection points) and grid lines 114b (ie grid intersection lines) connecting the grid nodes 114a. The definition of the complete grid in the first dummy electrode 114 is the same as that of the first touch electrode 112, which will not be repeated here. The grid nodes 114a of the first dummy electrodes 114 are periodically arranged and distributed in a matrix pattern, so that the node capacitance values of the first dummy electrodes 114 in different unit areas UA1 are consistent. In addition, the grid lines 114b of the first dummy electrode 114 are irregularly arranged, that is, the design of the first dummy electrodes 114 includes at least two grid lines 114b of different linear shapes, wherein the linear shape may include straight lines, polylines, arcs, and curves And cloud-shaped lines. In this way, although all the grid nodes 114a of the complete grid of the first dummy electrode 114 are periodically set, since at least two grid lines 114b with different linear shapes are included, the overall consistency can be destroyed, so that the first At least two complete grids of a dummy electrode 114 have different shapes. In this way, it is possible to avoid the visual interference caused by regularly arranged grids, such as moiré patterns. In some embodiments, all grid lines 114b of the first dummy electrode 114 are preferably randomly arranged by lines such as straight lines, polylines, arcs, curves, and splines, so that all the complete grid shapes of the first dummy electrode 114 It is more irregular and can effectively reduce visual interference.

As described above, in terms of the grid structure of the first touch electrodes 112 and the first dummy electrodes 114, the shape of at least one complete grid of the first dummy electrodes 114 will be different from any of the first touch electrodes 112 The shape of the complete grid. For example, the grid lines 114b of the first dummy electrodes 114 include at least curved and cloud-shaped lines, and the grid lines 112b of the first touch electrodes 112 are all linear lines. In this way, the functional area and The overall grid appearance presented by the non-functional area is different, which in turn produces visual differences.

FIG. 1D is a schematic top view of the second conductive mesh layer 130 of the touch panel 100 of FIG. 1B. The design of the second conductive mesh layer 130 in this embodiment is substantially the same as that of the first conductive mesh layer 110. The difference is that the two are electrode layers in different axial directions. Therefore, the following description will be simplified. The second conductive grid layer 130 includes at least one second touch electrode 132 and at least one second dummy electrode 134, each having a plurality of grids made of conductive material. The second touch electrode 132 and the second dummy electrode 134 are electrically separated from each other. Specifically, there is a gap G2 between the second touch electrode 132 and the second dummy electrode 134 to separate the two. Similarly, the second conductive mesh layer 130 is formed by patterning a complete conductive mesh material layer, wherein the layout range of the second touch electrode 132 is defined as a functional area, and the second dummy The layout range of the electrode 134 is defined as a non-functional area.

In some embodiments, the second conductive mesh layer 130 is formed by a plurality of unit areas UA2 arranged in a matrix, wherein each unit area UA2 covers one second touch electrode 132 and two second dummy electrodes 134, the second The touch electrode 132 is disposed between the two second dummy electrodes 134. The following describes the design of the second touch electrode 132 and the second dummy electrode 134 for only one unit area UA2.

Like the arrangement of the first touch electrode 112, the second touch electrode 132 has a plurality of grid nodes 132a (ie grid intersection points) and grid lines 132b (ie grid intersection lines) connecting the grid nodes 132a. All grid nodes 132a of the second touch electrode 132 are arranged periodically and distributed in a matrix pattern. In addition, the grid lines 132b of the second touch electrode 132 are set regularly, that is, the grid lines 132b are designed with the same line shape, for example, any of linear, fold, arc, curve, and cloud-shaped lines can be used To design. In this embodiment, the lines and lengths of the grid lines 132b of the complete grids of the second touch electrode 132 are the same, and the shapes of the complete grids of the second touch electrode 132 are the same. In the present embodiment, taking a straight grid line 132b as an example, the shape of the grid is a rhombus. With this design, the overall capacitance value and resistance value of the second touch electrodes 132 in different unit areas UA2 can be made consistent. As described above, through the periodic setting of the grid nodes 132a and the regular setting of the grid lines 132b, all the complete grids in the second touch electrodes 132 have the same shape and are regularly arranged.

Like the arrangement of the first dummy electrode 114, the second dummy electrode 134 has a plurality of grid nodes 134a (ie grid intersection points) and grid lines 134b (ie grid intersection lines) connecting the grid nodes 134a. The grid nodes 134a of the second dummy electrode 134 are periodically arranged and distributed in a matrix pattern, so that the node capacitances of the second dummy electrodes 134 in different unit areas UA2 are consistent. In addition, the grid lines 134b of the second dummy electrode 134 are irregularly arranged, specifically, the design of the second dummy electrode 134 includes at least two grid lines 134b of different linear shapes, wherein the linear shape may include straight lines, polylines, arcs, curves And cloud-shaped lines. In this way, although all the grid nodes 134a of the complete grid of the second dummy electrode 134 are periodically set, since at least two grid lines 134b with different linear shapes are included, the overall consistency can be destroyed, so that the first At least two complete grids of the two dummy electrodes 134 have different shapes. In this way, it is possible to avoid the visual interference caused by regularly arranged grids, such as moiré patterns.

As described above, in terms of the grid structure of the second touch electrode 132 and the second dummy electrode 134, the shape of at least one complete grid of the second dummy electrode 134 is different from any complete shape of the second touch electrode 132 The shape of the grid. For example, the grid lines 134b of the second dummy electrode 134 include at least curved and cloud-shaped lines, and the grid lines 132b of the second touch electrode 132 are all straight lines, so that the functional area and The overall grid appearance presented by the non-functional area is different, which in turn produces visual differences.

Referring to FIG. 1B, in the case where the first conductive mesh layer 110 and the second conductive mesh layer 130 are arranged one above the other, in the vertical touch panel direction, only the first touch electrode 112 and the second touch electrode 132 The overlapping overlapping area A1 is a complete grid with regular arrangement and the same shape. However, other overlapping areas, such as the overlapping area A21 where the first dummy electrode 114 and the second touch electrode 132 intersect and the overlapping area A22 where the first touch electrode 112 and the second dummy electrode 134 intersect, these two areas are regular because of the presence of a layer A complete grid that is arranged but not all of the same shape, so the whole will show an irregular visual effect. In addition, in the overlapping area A23 where the first dummy electrode 114 and the second dummy electrode 134 intersect, there are two complete grids that are regularly arranged but the shapes are not the same, so the whole also exhibits an irregular visual effect. In some embodiments, the area of the overlapping area A1 accounts for less than or equal to 5.7% of the total area of one unit area (UA). Through the design of this embodiment, the overlapping area A1 occupies only a small area, and one overlapping area A1 is surrounded by overlapping areas A21 to A23 that exhibit irregular visual effects, so that the multiple overlapping areas A1 can be effectively between each other Being separated helps to maintain the overall visual effect of the touch panel 100 and avoids the moiré problem caused by regular graphic settings.

In some embodiments of the present invention, the grid nodes of the first conductive grid layer 110 and the second conductive grid layer 130 are interleaved with each other without overlapping each other. For example, in the overlapping area A1, the projection of the grid node 112a of the first touch electrode 112 on the upper surface of the insulating layer 120 is not the same as the grid node 132a of the second touch electrode 132 on the upper surface of the insulating layer 120 Of projections overlap. In the overlapping area A21, the projection of the grid node 114a of the first dummy electrode 114 on the upper surface of the insulating layer 120 does not overlap with the projection of the grid node 132a of the second touch electrode 132 on the upper surface of the insulating layer 120. In the overlapping area A22, the projection of the grid node 112a of the first touch electrode 112 on the upper surface of the insulating layer 120 does not overlap with the projection of the grid node 134a of the second dummy electrode 134 on the upper surface of the insulating layer 120. In the overlapping area A23, the projection of the mesh node 114a of the first dummy electrode 114 on the upper surface of the insulating layer 120 does not overlap with the projection of the mesh node 134a of the second dummy electrode 134 on the upper surface of the insulating layer 120. In this way, the overlapping areas A21 to A23 that originally exhibited irregular visual effects can further cause irregular effects when the grid nodes of the first conductive grid layer 110 and the second conductive grid layer 130 do not overlap each other. . Of course, this should not limit the scope of the present invention. In other embodiments, the grid nodes of the first conductive grid layer 110 and the second conductive grid layer 130 may overlap each other.

In some embodiments of the present invention, the first conductive mesh layer 110 and the second conductive mesh layer 130 may be formed by a patterning process of a copper layer through photolithography and etching, for example. Alternatively, in other embodiments, the printing method may be used directly, and the liquid metal ink may be used for pattern printing. Of course, this should not limit the scope of the present invention. In other embodiments, the material of the conductive mesh material layer may use other metals or metal alloys with good conductivity, such as silver, nickel, titanium-tungsten alloy, and the like.

In some embodiments of the present invention, the insulating layer 120 may be a rigid substrate, such as a glass substrate or a polyethylene terephthalate (PET) substrate. Alternatively, in some embodiments, the insulating layer 120 may be a suitable flexible substrate. For example, the insulating layer 120 may be a flexible polyethylene terephthalate (PET) or polyimide (PI) substrate. In addition, in some embodiments, the insulating layer 120 may also be an adhesive layer, such as optical glue. In this regard, if the insulating layer 120 is designed with an adhesive layer, as far as the structure of the touch panel 100 is concerned, the first conductive mesh layer 110 and the second conductive mesh layer 130 are first formed in a permanent or temporary The carrier substrate (not shown) is then bonded to each other through the adhesive layer.

In this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is the same as the period of the mesh node 112a of the first touch electrode 112. For example, in the horizontal axis, the distance between two adjacent grid nodes 114a is approximately equal to the distance between two adjacent grid nodes 112a; in the vertical axis, the distance between two adjacent grid nodes 114a The pitch is approximately equal to the pitch of two adjacent grid nodes 112a. Similarly, the period of the grid node 134a of the second dummy electrode 134 is the same as the period of the grid node 132a of the second touch electrode 132. For example, in the horizontal axis, the distance between two adjacent grid nodes 134a is approximately equal to the distance between two adjacent grid nodes 132a; in the vertical axis, the distance between two adjacent grid nodes 134a The pitch is approximately equal to the pitch of two adjacent grid nodes 132a. Of course, this should not limit the scope of the present invention. In other embodiments, the periods of the two may be different.

FIG. 2A is a schematic top view of the unit area UA1 of the first conductive mesh layer 110 of the touch panel 100 according to the second embodiment of the present invention. 2B is a schematic top view of the unit area UA2 of the second conductive mesh layer 130 of the touch panel 100 according to the second embodiment of the present invention. This embodiment is similar to the first embodiment, except that, as shown in FIG. 2A, in this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is different from the mesh node 112a of the first touch electrode 112 The period of the grid node 114a of the first dummy electrode 114 is greater than the period of the grid node 112a of the first touch electrode 112. Specifically, here, the period of the grid node 114a of the first dummy electrode 114 is twice the period of the grid node 112a of the first touch electrode 112, that is, whether in the horizontal axis or the vertical axis, the phase The distance between two adjacent grid nodes 114a is equal to twice the distance between two adjacent grid nodes 112a. Here, the period of the mesh node 114a of each first dummy electrode 114 of the unit area UA1 is still the same.

Similarly, as shown in FIG. 2B, the period of the mesh node 134a of the second dummy electrode 134 is greater than the period of the mesh node 132a of the second touch electrode 132. For example, the period of the grid node 134a of the second dummy electrode 134 is twice that of the grid node 132a of the second touch electrode 132, that is, whether adjacent to the horizontal axis or the vertical axis, two adjacent The spacing between grid nodes 134a is equal to twice the spacing between two adjacent grid nodes 132a. The period of the mesh node 134a of each second dummy electrode 134 of the unit area UA2 is still the same.

Other details of this embodiment are generally as described above, and will not be repeated here.

FIG. 3A is a schematic top view of the unit area UA1 of the first conductive mesh layer 110 of the touch panel according to the third embodiment of the present invention. FIG. 3B is a schematic top view of the unit area UA2 of the second conductive mesh layer 130 of the touch panel according to the third embodiment of the present invention. This embodiment is similar to the first embodiment, except that, as shown in FIG. 3A, in this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is different from the mesh node 112a of the first touch electrode 112 The period of the grid node 114a of the first dummy electrode 114 is less than the period of the grid node 112a of the first touch electrode 112. Specifically, here, the period of the grid node 112a of the first touch electrode 112 is twice that of the grid node 114a of the first dummy electrode 114, that is, regardless of the horizontal axis or the vertical axis, the phase The distance between two adjacent grid nodes 112a is equal to twice the distance between two adjacent grid nodes 114a. Here, the period of the mesh node 114a of each first dummy electrode 114 of the unit area UA1 is still the same.

Similarly, as shown in FIG. 3B, the period of the grid node 134a of the second dummy electrode 134 is smaller than the period of the grid node 132a of the second touch electrode 132. For example, the period of the grid node 132a of the second touch electrode 132 is twice that of the grid node 134a of the second dummy electrode 134, that is, whether adjacent to the horizontal axis or the vertical axis, two adjacent The spacing between grid nodes 132a is equal to twice the spacing between two adjacent grid nodes 134a. The period of the mesh node 134a of each second dummy electrode 134 of the unit area UA2 is still the same.

Other details of this embodiment are generally as described above, and will not be repeated here.

FIG. 4A is a schematic top view of the unit area UA1 of the first conductive mesh layer 110 of the touch panel according to the fourth embodiment of the present invention. FIG. 4B is a schematic top view of the unit area UA2 of the second conductive mesh layer 130 of the touch panel according to the fourth embodiment of the present invention. This embodiment is similar to the first embodiment, with the difference that, as shown in FIG. 4A, in this embodiment, the grid lines 112b of the first touch electrodes 112 are curvilinear. The shape and size of each complete grid of the first touch electrode 112 remain the same. With this design, the overall capacitance value and resistance value of the first touch electrodes 112 in different unit areas UA1 can be made consistent. Similarly, as shown in FIG. 4B, in this embodiment, the grid lines 132b of the second touch electrodes 132 are curved lines. The shape and size of each complete grid of the second touch electrode 132 remain the same. With this design, the overall capacitance value and resistance value of the second touch electrodes 132 in different unit areas UA2 can be made consistent.

In this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is the same as the period of the mesh node 112a of the first touch electrode 112. For example, in the horizontal axis, the distance between two adjacent grid nodes 114a is approximately equal to the distance between two adjacent grid nodes 112a; in the vertical axis, the distance between two adjacent grid nodes 114a The pitch is approximately equal to the pitch of two adjacent grid nodes 112a. Similarly, the period of the grid node 134a of the second dummy electrode 134 is the same as the period of the grid node 132a of the second touch electrode 132. For example, in the horizontal axis, the distance between two adjacent grid nodes 134a is approximately equal to the distance between two adjacent grid nodes 132a; in the vertical axis, the distance between two adjacent grid nodes 134a The pitch is approximately equal to the pitch of two adjacent grid nodes 132a. Of course, this should not limit the scope of the present invention. In other embodiments, the periods of the two may be different.

Other details of this embodiment are generally as described above, and will not be repeated here.

In various embodiments of the present invention, in at least one conductive mesh layer, the shape of the conductive mesh in the non-functional area is irregular, which can avoid the moiré problem caused by the regular pattern setting of the entire layer. Further, when the touch panel and the display panel are overlapped, the designs of the embodiments of the present invention can further prevent the conductive grid of the conductive grid layer of the touch panel and the pixels of the display panel from forming a regular pattern The overlap further reduces the chance of moiré occurrence. In addition, although the shape of the conductive grid of the non-functional area is designed to be irregular, the grid nodes are still designed to be periodically arranged and distributed in a matrix pattern, thereby maintaining the uniformity of the capacitance value of the entire touch panel to avoid The dummy electrode in the non-functional area affects the judgment of the touch sensing result.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be deemed as defined by the scope of the attached patent application.

110‧‧‧The first conductive grid layer

112‧‧‧First touch electrode

114‧‧‧The first dummy electrode

130‧‧‧Second conductive grid layer

132‧‧‧Second touch electrode

134‧‧‧Second dummy electrode

A1, A21, A22, A23 ‧‧‧ overlapping area

UA‧‧‧ Unit area

1A-1A‧‧‧line

Claims (14)

A touch panel includes: a first conductive grid layer, including at least a first touch electrode and at least a first dummy electrode, each having a plurality of grids made of a conductive material, the first touch electrode and The first dummy electrodes are electrically separated from each other, wherein at least two of the first dummy electrodes have different shapes; a second conductive mesh layer; and an insulating layer, the first conductive mesh layer and The second conductive mesh layers are separated. The touch panel according to claim 1, wherein the first dummy electrode has a plurality of grid nodes, and the grid nodes are arranged periodically. The touch panel according to claim 1, wherein the shape of at least one of the grids of the first dummy electrode is different from the shape of any of the grids of the first touch electrode. The touch panel according to claim 1, wherein the first dummy electrode has a plurality of grid nodes, the first touch electrode has a plurality of grid nodes, and the periods of the grid nodes of the first dummy electrode The periods of the grid nodes that are the same or different from those of the first touch electrode. The touch panel according to claim 1, wherein the shapes of the grids of the first touch electrode are the same. The touch panel according to claim 1, wherein the second conductive grid layer includes at least one second touch electrode and at least one second dummy electrode, each having a plurality of grids composed of conductive materials, the first The two touch electrodes and the second dummy electrode are electrically separated from each other. The touch panel according to claim 6, wherein at least two grids of the second dummy electrode have different shapes. The touch panel according to claim 6, wherein the second dummy electrode has a plurality of grid nodes, and the grid nodes are arranged periodically. The touch panel according to claim 6, wherein the shape of at least one of the grids of the second dummy electrode is different from the shape of any of the grids of the second touch electrode. The touch panel according to claim 6, wherein the second dummy electrode has a plurality of mesh nodes, the second touch electrode has a plurality of mesh nodes, and the periods of the mesh nodes of the second dummy electrode The periods of the mesh nodes that are the same or different from the second touch electrodes. The touch panel according to claim 6, wherein the grids of the second touch electrodes have the same shape. The touch panel according to claim 6, wherein the first touch electrode has a plurality of grid nodes, the second touch electrode has a plurality of grid nodes, and the grid nodes of the first touch electrode The projection on the upper surface of one of the insulating layers overlaps or does not overlap the projection of the grid nodes of the second touch electrode on the upper surface of the insulating layer. The touch panel according to claim 6, wherein the first dummy electrode has a plurality of mesh nodes, the second dummy electrode has a plurality of mesh nodes, and the mesh nodes of the first dummy electrode are insulated from the The projection of the upper surface of one of the layers overlaps or does not overlap the projection of the mesh nodes of the second dummy electrode on the upper surface of the insulating layer. The touch panel according to claim 1, wherein the insulating layer is a rigid substrate, a flexible substrate or an adhesive layer.

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