TWI727245B - 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 touch panel structure includes a sensing area formed on the surface of the substrate. The sensing area is used to sense the human body’s fingers or pen-like writing tools. In order to achieve the touch effect.

In the current touch panels of mobile terminals, 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 deal with the current industry development bottleneck, manufacturers seek new material technologies to replace transparent conductive materials in order to reduce costs and obtain profits.

The metal mesh touch panel technology has quickly gained the favor of mainstream manufacturers due to its low resistivity, easy material selection, and simple manufacturing process. Various large-size panels have been favored. However, metal grids also have several shortcomings. For example, the shape of the metal grids is prone to produce Moiré pattern problems, resulting in poor visual effects and 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 designed to be irregular, which can avoid the moiré problem caused by the regular pattern arrangement 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 grid layer includes at least one first touch electrode and at least one first dummy electrode, and each has a plurality of grids made of conductive materials. The first touch electrode and the first dummy electrode are electrically separated from each other, and the shapes of at least two grids of the first dummy electrode are different. 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 mesh nodes, and the mesh nodes are periodically arranged.

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 mesh nodes, the first touch electrode has a plurality of mesh nodes, and the period of the mesh nodes of the first dummy electrode is the same or different from that of the first touch electrode. The period of the grid node of the control electrode.

In some embodiments of the present invention, the grids of the first touch electrodes have the same shape.

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 materials, the second touch electrode and the first The two dummy electrodes are electrically separated from each other.

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

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

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 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 grids of the second touch electrodes have the same shape.

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 Projection of grid nodes 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 mesh nodes, the second dummy electrode has a plurality of mesh nodes, and the projections of the mesh nodes of the first dummy electrode on the upper surface of the insulating layer overlap or do 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‧‧‧First conductive mesh layer

112‧‧‧First touch electrode

112a‧‧‧Grid Node

112b‧‧‧Grid lines

114‧‧‧The first dummy electrode

114a‧‧‧Grid Node

114b‧‧‧Grid lines

120‧‧‧Insulation layer

130‧‧‧Second conductive mesh 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 the 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.

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.

Hereinafter, multiple embodiments of the present invention will be disclosed in the form of drawings. For clear description, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in the drawings in a simple way.

FIG. 1A is a schematic cross-sectional view of the 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 and the second conductive mesh layer 130. In this embodiment, the first conductive mesh layer 110 is, for example, the Y-axis (vertical axis) electrode of the touch panel 100, and the second conductive mesh layer 130 is, for example, the X-axis of the touch panel 100. (Horizontal axis) electrode.

FIG. 1B is a schematic top view of the touch panel 100 in 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 in 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 materials. 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 supplemented that the first conductive mesh layer 110 is formed by patterning an entire layer of a complete conductive mesh material layer. The layout range of the first touch electrode 112 is defined as a functional area, and the first conductive mesh layer 110 is patterned. The arrangement 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 following only introduces the design of the first touch electrode 112 and the first dummy electrode 114 for 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 is defined as 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 complete grids are connected by two grid nodes 112a and a grid line 112b to form adjacent edges Or through a grid node 112a to form a state where the ends are connected.

The grid nodes 112a of the first touch electrode 112 are periodically arranged, that is, the positions of the grid nodes 112a are arranged according to a specific rule, for example, on the horizontal axis, two adjacent grid nodes are arranged. 112a is separated by a first distance; and in the vertical axis, two adjacent grid nodes 112a are separated by a second distance, where the first distance may be equal to or not equal to the second distance, so that the grid node 112a At least the arrangement on the same axis is periodic. On the whole, all grid nodes 112a are arranged periodically 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 linear shape, for example, straight lines, polylines, arcs, curves, and cloud-shaped lines can be used for design. . In this embodiment, the line shapes and lengths of the grid lines 112b of each complete grid of the first touch electrode 112 are the same, so that the shapes of each complete grid of the first touch electrode 112 are the same. In this embodiment, the linear mesh line 112b is taken as an example, and the shape of the mesh is a rhombus. With this design, the overall capacitance value and resistance value of the first touch electrode 112 in different unit areas UA1 can be consistent. It is supplemented that the grid lines 112b in the first touch electrode 112 that do not form a complete grid, because they do not form a complete electrical connection with other complete grids, they are connected to the first touch electrode 112. The influence of the overall capacitance value and resistance value is negligible.

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

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 the definition of the first touch electrode 112, and 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 arranged irregularly. Specifically, the first dummy electrode 114 is designed to include at least two grid lines 114b with different linear shapes, where the linear shapes can include straight lines, polylines, arcs, and curves. And cloud-shaped lines and other linear shapes. In this way, although all grid nodes 114a of the complete grid of the first dummy electrode 114 are periodically arranged, since at least two grid lines 114b of different linear shapes are included, the overall consistency can be destroyed and the first dummy electrode 114 At least two complete grids of a dummy electrode 114 have different shapes. In this way, it is possible to avoid visual disturbance caused by the regularly arranged grids, such as Moiré pattern. In some embodiments, all grid lines 114b of the first dummy electrode 114 are preferably arranged randomly by straight lines, polylines, arcs, curves, and cloud-shaped lines, so that all the grid lines of the first dummy electrode 114 have a complete grid shape. It is more irregular and can effectively reduce visual interference.

Continuing from the above, in terms of the grid structure of the first touch electrode 112 and the first dummy electrode 114, the shape of at least one complete grid of the first dummy electrode 114 is different from any one of the first touch electrodes 112. The shape of the complete mesh. For example, the grid lines 114b of the first dummy electrode 114 include at least curved lines and cloud-shaped lines, while the grid lines 112b of the first touch electrode 112 are all straight lines. In this way, the functional area and The overall grid appearance of the non-functional area can be different, which in turn produces a visual difference.

FIG. 1D is a schematic top view of the second conductive mesh layer 130 of the touch panel 100 in FIG. 1B. The design aspect 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 used as electrode layers with different axial directions. Therefore, the description will be simplified below. 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 materials. 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 whole layer of 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 arrangement 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, and the second The touch electrode 132 is disposed between the two second dummy electrodes 134. The following only introduces the design of the second touch electrode 132 and the second dummy electrode 134 for 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 periodically arranged and distributed in a matrix pattern. In addition, the grid lines 132b of the second touch electrode 132 are arranged regularly, that is, the grid lines 132b are designed with the same linear shape, for example, any linear shape such as a straight line, a polyline, an arc, a curve, and a cloud shape can be used. To design. In this embodiment, the line shapes and lengths of the grid lines 132b of each complete grid of the second touch electrode 132 are the same, so that the shapes of each complete grid of the second touch electrode 132 are the same. In this embodiment, the linear mesh line 132b is taken as an example, and the shape of the mesh is a rhombus. With this design, the overall capacitance value and resistance value of the second touch electrode 132 in different unit areas UA2 can be made consistent. As mentioned above, through the periodic setting of the grid nodes 132a and the regularity setting of the grid lines 132b, all the complete grids in the second touch electrode 132 have exactly 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 (i.e. grid intersection points) and grid lines 134b (i.e. grid intersection lines) connecting the grid nodes 134a. The grid nodes 134a of the second dummy electrodes 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 arranged irregularly. Specifically, the second dummy electrode 134 is designed to include at least two grid lines 134b with different linear shapes, where the linear shapes can include straight lines, polylines, arcs, and curves. And cloud-shaped lines and other linear shapes. In this way, although all grid nodes 134a of the complete grid of the second dummy electrode 134 are periodically arranged, since at least two grid lines 134b of different linear shapes are included, the overall consistency can be destroyed and the first The shapes of at least two complete grids of the two dummy electrodes 134 are different. In this way, it is possible to avoid visual disturbance caused by the regularly arranged grids, such as Moiré pattern.

From the foregoing, 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 grid 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, while the grid lines 132b of the second touch electrode 132 are all straight lines. In this way, the functional area and The overall grid appearance of the non-functional area can be different, which in turn produces a visual difference.

Referring to FIG. 1B, when the first conductive mesh layer 110 and the second conductive mesh layer 130 are overlapped up and down, in the direction perpendicular to the touch panel, only the first touch electrode 112 and the second touch electrode 132 The overlapping area A1 that intersects is a complete grid that is regularly arranged and has 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, are regular due to the existence of one layer. A complete grid arranged but not all of the same shape, so the whole presents an irregular visual effect. In addition, the overlapping area A23 where the first dummy electrode 114 and the second dummy electrode 134 intersect has two layers of complete grids that are regularly arranged but not all the same in shape, so the whole also presents 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 a unit area (UA). Through the design of this embodiment, the overlapping area A1 only occupies a small area, and an overlapping area A1 is surrounded by overlapping areas A21~A23 that present irregular visual effects, so that 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 can avoid the moiré problem caused by the regular pattern setting.

In some embodiments of the present invention, the mesh nodes of the first conductive mesh layer 110 and the second conductive mesh layer 130 are staggered and do not overlap each other. For example, in the overlap 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 projection of the grid node 132a of the second touch electrode 132 on the upper surface of the insulating layer 120 The projections overlap. In the overlap 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 overlap 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 overlap 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~A23 that originally present irregular visual effects can further cause irregularities when the mesh nodes of the first conductive mesh layer 110 and the second conductive mesh layer 130 do not overlap each other. . Of course, the scope of the present invention should not be limited by this. In other embodiments, the mesh nodes of the first conductive mesh layer 110 and the second conductive mesh 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 can be formed, for example, by a patterning process of photolithography and etching of a copper layer. Alternatively, in other embodiments, the printing method may be directly adopted, and the pattern printing is performed with liquid metal ink. Of course, the scope of the present invention should not be limited by this. In other embodiments, the material of the conductive mesh material layer may be 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 adopts the design of 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 formed in a permanent or temporary manner. The flexible carrier substrate (not shown in the figure) 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, on the horizontal axis, the distance between two adjacent grid nodes 114a is approximately equal to the distance between two adjacent grid nodes 112a; on the vertical axis, the distance between two adjacent grid nodes 114a The distance is approximately equal to the distance between two adjacent grid nodes 112a. Similarly, the period of the mesh node 134a of the second dummy electrode 134 is the same as the period of the mesh node 132a of the second touch electrode 132. For example, on the horizontal axis, the distance between two adjacent grid nodes 134a is approximately equal to the distance between two adjacent grid nodes 132a; on the vertical axis, the distance between two adjacent grid nodes 134a The distance is approximately equal to the distance between 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. FIG. 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, but the difference is: as shown in FIG. 2A, in this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is different from that of 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 mesh node 114a of the first dummy electrode 114 is twice the period of the mesh node 112a of the first touch electrode 112, that is, no matter in the horizontal axis or the vertical axis, the period 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 mesh node 134a of the second dummy electrode 134 is twice the period of the mesh node 132a of the second touch electrode 132, that is, whether in the horizontal axis or the vertical axis, two adjacent ones The distance between the mesh nodes 134a is equal to twice the distance between two adjacent mesh nodes 132a. The period of the mesh node 134a of each second dummy electrode 134 in the unit area UA2 is still the same.

The other details of this embodiment are roughly 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. 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, but the difference is: as shown in FIG. 3A, in this embodiment, the period of the mesh node 114a of the first dummy electrode 114 is different from that of the mesh node 112a of the first touch electrode 112. The period of the grid node 114a of the first dummy electrode 114 is smaller than the period of the grid node 112a of the first touch electrode 112. Specifically, here, the period of the mesh node 112a of the first touch electrode 112 is twice the period of the mesh node 114a of the first dummy electrode 114, that is, regardless of whether it is in the horizontal axis or the vertical axis. 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 mesh node 134a of the second dummy electrode 134 is smaller than the period of the mesh node 132a of the second touch electrode 132. For example, the period of the mesh node 132a of the second touch electrode 132 is twice the period of the mesh node 134a of the second dummy electrode 134, that is, whether in the horizontal axis or the vertical axis, two adjacent ones The distance between the mesh nodes 132a is equal to twice the distance between two adjacent mesh nodes 134a. The period of the mesh node 134a of each second dummy electrode 134 in the unit area UA2 is still the same.

The other details of this embodiment are roughly as described above, and will not be repeated here.

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. 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, but the difference is: as shown in FIG. 4A, in this embodiment, the grid lines 112b of the first touch electrode 112 are in a curved line shape. 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 electrode 112 in different unit areas UA1 can be consistent. Similarly, as shown in FIG. 4B, in this embodiment, the grid lines 132b of the second touch electrode 132 have a curved line shape. 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 electrode 132 in different unit areas UA2 can be made consistent.

In this embodiment, the period of the mesh node 114 a of the first dummy electrode 114 is the same as the period of the mesh node 112 a of the first touch electrode 112. For example, on the horizontal axis, the distance between two adjacent grid nodes 114a is approximately equal to the distance between two adjacent grid nodes 112a; on the vertical axis, the distance between two adjacent grid nodes 114a The distance is approximately equal to the distance between two adjacent grid nodes 112a. Similarly, the period of the mesh node 134a of the second dummy electrode 134 is the same as the period of the mesh node 132a of the second touch electrode 132. For example, on the horizontal axis, the distance between two adjacent grid nodes 134a is approximately equal to the distance between two adjacent grid nodes 132a; on the vertical axis, the distance between two adjacent grid nodes 134a The distance is approximately equal to the distance between 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.

The other details of this embodiment are roughly 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 designed to be irregular, which can avoid the moiré problem caused by the regular pattern arrangement of the entire layer. Further, when the touch panel and the display panel are overlapped, the design of various embodiments of the present invention can prevent the conductive mesh of the conductive mesh layer of the touch panel and the pixels of the display panel from forming regular patterns. The overlap further reduces the chance of moiré occurrence. In addition, although the shape of the conductive grid in 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 overall capacitance of the touch panel. 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 familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of the attached patent application.

110‧‧‧First conductive mesh layer

112‧‧‧First touch electrode

114‧‧‧The first dummy electrode

130‧‧‧Second conductive mesh 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 one first touch electrode having a plurality of first touch grids defined by a plurality of first touch wires enclosed and enclosed; and At least one first dummy electrode has a plurality of first dummy grids enclosed and enclosed by a plurality of first dummy wires, the first touch electrode and the first dummy electrode are electrically separated from each other, and the first dummy electrodes are electrically separated from each other. A first and a second of a dummy grid are respectively adjacent to opposite sides of one of the first dummy wires, wherein the first and the second of the first dummy grids have different shapes A second conductive mesh layer; and an insulating layer separating the first conductive mesh layer and the second conductive mesh layer. The touch panel according to claim 1, wherein the first dummy electrode has a plurality of grid nodes, and the grid nodes are periodically arranged. The touch panel according to claim 1, wherein the shape of at least one of the first dummy grids of the first dummy electrode is different from the shape of any one of the first touch grids of the first touch electrode . The touch panel according to claim 1, wherein the first dummy electrode has a plurality of mesh nodes, the first touch electrode has a plurality of mesh nodes, and the period of the mesh nodes of the first dummy electrode The periods of the grid nodes that are the same or different from the first touch electrode. The touch panel according to claim 1, wherein the first touch grids of the first touch electrode have the same shape. The touch panel according to claim 1, wherein the second conductive grid layer includes: at least one second touch electrode having a plurality of second touches defined by a plurality of second touch wires enclosed in a closed manner Control grid; and at least one second dummy electrode, having a plurality of second dummy grids enclosed and defined by a plurality of second dummy wires, the second touch electrode and the second dummy electrode are electrically separated from each other . The touch panel according to claim 6, wherein the shapes of at least two of the second dummy grids of the second dummy electrode are different. The touch panel according to claim 6, wherein the second dummy electrode has a plurality of grid nodes, and the grid nodes are periodically arranged. The touch panel according to claim 6, wherein the shape of at least one of the second dummy grids of the second dummy electrode is different from the shape of any of the second touch grids of the second touch electrode . The touch panel according to claim 6, wherein the second dummy electrode has a plurality of grid nodes, the second touch electrode has a plurality of grid nodes, and the period of the grid nodes of the second dummy electrode The periods of the grid nodes that are the same or different from the second touch electrode. The touch panel according to claim 6, wherein the second touch The shapes of the second touch grids of the control electrode are the same. 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 an upper surface of the insulating layer does not overlap with 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 projection of the upper surface of one of the layers does not overlap the projection of the grid 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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