CN209879484U - Touch panel with non-node pattern - Google Patents

Abstract

A touch panel with a non-node pattern mainly comprises a light-transmitting substrate and two sensing electrodes, wherein the two sensing electrodes are opposite to each other across the light-transmitting substrate, metal grids of the two sensing electrodes respectively comprise a non-conductive non-node pattern, included angles between metal lines with sensing functions are randomly arranged under specific conditions, so that the area of nodes is reduced, further, diffraction effects at the nodes are effectively reduced or eliminated, in addition, the metal grids of the two opposite sensing electrodes and the non-conductive non-node patterns can be mutually staggered into a staggered pattern formed by irregular polygons, and the purpose that interference stripes cannot be generated when the touch panel is used with display panels with various main flow sizes is achieved.

Description

Touch panel with non-node pattern

Technical Field

A touch panel with a non-node pattern, especially a touch panel capable of improving the identification degree of touch signals and effectively reducing the generation of interference fringes, and an induction electrode is made by using a film photomask, so that a glass photomask is not needed, the manufacturing cost is effectively saved, and the touch panel does not generate interference fringes when being used with display panels of various mainstream sizes.

Background

When the metal mesh of the touch panel is applied to the display panel, so-called interference fringes (Moire) are easily generated, which affects the image display quality. The interference fringes are generated because several factors affect the light transmittance due to the shape and arrangement of the metal mesh pattern and the line width of the metal mesh. When adjacent fringe patterns are regularly arranged, optical interference fringes are generated, and in order to effectively prevent optical phenomena such as interference fringes (interference fringes), for example, a so-called Moire effect (Moire effect). It is very effective to make the line width of the metal mesh between 1 micron and 3 microns and adjust the shape angle or arrangement of the metal mesh.

Another reason is that when the touch panel is attached to the display panel, the metal grid of the touch panel and the Thin-Film Transistor array (TFT array) of the display panel (such as black matrix or RGB pixel array) are regularly arranged in a grid pattern, so that when the two regularly arranged grid patterns are overlapped, an optical interference fringe is also generated.

To avoid or reduce the occurrence of interference fringes, the line width of the conductive lines is between 1 micron and 3 microns, so that the fine line width is required to be manufactured by using a high resolution glass mask, but the cost of the glass mask is high, which leads to the increase of initial development and manufacturing cost.

Therefore, the thin film mask 1A can be manufactured through the thin film mask (see fig. 1A), but the thin film mask 1A has a lower resolution than the glass mask, so that the line width of the metal mesh 1B (see fig. 1B) manufactured through the thin film mask 1A by the exposure, development and etching process is only 5 to 8 μm, and a plurality of nodes N are formed at the intersections of the lines, as described above, the line width manufactured through the thin film mask 1A is large, so that the area of the nodes is large, and each node is in a uniform shape of a regular cross, so that the diffraction phenomenon is easily generated when the light reaches the node, thereby affecting the transmittance and seriously affecting the display effect.

Refer to taiwan patent publication No. I601043, "touch panel with non-inductive function metal lines", which mainly includes a transparent substrate and two inductive electrodes, the two inductive electrodes are opposite to each other across the transparent substrate, metal grids of the two inductive electrodes respectively include metal lines with inductive function and metal lines without inductive function, and the opposite metal grids are further formed with mutually staggered lines; the objective of this scheme is to avoid the diffraction effect, and the technical means adopted in this scheme is to increase the area of each grid of the metal grid (i.e. the grid density is increased) to reduce the number of nodes, however, the reduction of the number of nodes means that the position where the diffraction effect is generated is reduced, but the area of the node itself is not reduced, and the diffraction effect may still be generated.

In addition, when the metal lines with sensing function and the metal lines without sensing function are interlaced, although the whole metal lines can form a grid pattern invisible to naked eyes, the metal lines are regular grid patterns, so that the interlacing is still a regular grid pattern, that is, the intervals between the metal lines are fixed, when the metal lines are adhered to display panels with different specifications, the metal lines can generate interference fringes with Black matrixes (Black Matrix) and color filter layers with certain specifications, and metal grids with different arrangement intervals need to be additionally designed; however, the manufacturing cost is high, and the problem of diffraction effect at the node is to be overcome.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a touch panel design method capable of improving touch sensitivity while reducing interference fringes, which can use a low-cost film mask as a metal grid, especially can be used in conjunction with a display panel of various resolutions.

The present invention mainly provides a technical means for reducing diffraction effect occurring at nodes, i.e. each included angle between two lines constituting a node is unequal, wherein each included angle is within a proper angle range, but the included angle can be determined in a random manner within the proper angle range, for example, different included angles are selected, so that the shape of each node is slightly different and the area of the node is reduced, thereby effectively reducing the chance of diffraction effect occurring at the node, therefore, each node of the metal grid and the node of the metal grid are not exactly aligned with the Black Matrix (Black Matrix) and the color filter layer of the display, namely, the shape of each node of the metal grid with sensing function is not a single cross shape, thereby effectively reducing or eliminating diffraction effect occurring at the node, and each line constituting the metal grid has a point curvature, The lines similar to straight lines, such as the slope, will not correspond to the black matrix (BlackMatrix) and the color filter arranged regularly and orderly, so that the technical means of reducing the diffraction effect at the node can be applied to various mainstream displays without generating the interference fringe effect.

The utility model also provides a means for forming invisible grid density by the non-node pattern, the utility model discloses a through dispose the non-node pattern in the metal grid with induction function, the metal grid with induction function is formed by the solid line and the continuous circuit, thereby whether the induction physical quantity changes, if the capacitance value changes; the non-node pattern is a cross-shaped or well-shaped pattern formed by discontinuous lines or discontinuous multi-segment lines, wherein the non-node pattern does not have nodes and is not connected with the metal grid with the sensing function, so the non-node pattern is non-conductive and has no sensing function, and the main purpose is to improve the whole grid density of the sensing electrode, namely the grid density which is invisible to naked eyes is formed when the touch panel is attached to the display panel.

To achieve the above object, the touch panel with a non-node pattern of the present invention comprises a transparent substrate; a first sensing electrode disposed on a first surface of the transparent substrate and extending along a first direction, the first sensing electrode including a plurality of first metal grids, the first metal grids including a plurality of nodes, an angle of an included angle formed between any two lines of the first metal grids forming the nodes being within a proper angle range and being determined by random numbers in the range, the first metal grids being further provided with a first pattern, none of the first patterns in the first metal grids intersecting the first metal grids, and the first pattern itself having no node; a second sensing electrode, disposed on a second surface of the transparent substrate and extending along a second direction, where the first surface and the second surface need to correspond to each other, the second sensing electrode includes a plurality of second metal grids, the second metal grid includes a plurality of nodes, an angle of an included angle formed between any two lines forming the nodes in the second metal grid is within a proper angle range and determined by random numbers in the range, the second metal grids are all configured with a second pattern, and the second patterns in the second metal grids are not intersected with the second metal grids and do not have any nodes.

The first metal grid and the first pattern in the first metal grid, and the second metal grid and the second pattern in the second metal grid are opposite up and down through the transparent substrate and are mutually staggered to form a staggered pattern, and the staggered pattern comprises a plurality of irregular polygons.

The utility model is characterized in that the distance between the first metal grid and the second metal grid is increased to more than 2.4mm, and the variable quantity of the capacitance value can be increased due to the increased distance between the grids, thereby achieving the purpose of improving the identification degree of the touch signal; in addition, the first metal grid and the second metal grid are provided with a first pattern and a second pattern which can be staggered and are not conductive, the grid width of the first metal grid or the second metal grid is increased in the upper section, so that the identification degree of a touch signal is improved, but the grid width is increased to cause the metal grid width to be too large so that the existence of the grid can be easily detected by naked eyes, and the non-conductive first pattern and the non-conductive second pattern are arranged in the first metal grid and the second metal grid, so that the grid density of the first induction electrode and the second induction electrode is just kept at a level which can not be detected by the naked eyes.

The number of nodes is reduced because the node-free pattern and the metal grid are not connected, and the first metal grid and the non-conductive first pattern, the second metal grid and the non-conductive second pattern which are provided by the upper section are only staggered in relative relation, but actually are not on the same layer, so that the nodes can not be generated, a high-resolution glass photomask is not needed, the metal grid with few nodes can be manufactured by only using a film photomask (such as a negative film), the transmittance is greatly improved, the display effect is effectively improved, and the manufacturing cost can also be effectively reduced because the cost of the film photomask is far lower than that of the glass photomask.

Drawings

FIG. 1A is a diagram of a prior art thin film mask.

FIG. 1B is a schematic diagram of a metal grid fabricated by a conventional exposure, development and etching process of a thin film mask

Fig. 2 is a schematic diagram of a touch panel with a non-node pattern according to the present invention.

Fig. 3A is an enlarged schematic view of the first sensing electrode and a local area a thereof, in which an implementation aspect of the first pattern is shown.

Fig. 3B is an enlarged schematic view of the second sensing electrode and a local area B thereof, wherein the local area B shows an implementation aspect of the second pattern.

FIG. 3C is an enlarged view of the staggered pattern formed between FIG. 3A and FIG. 3B.

Fig. 4A is an enlarged schematic view of the first sensing electrode and a local area a thereof, where the local area a is shown as another embodiment of the first pattern.

Fig. 4B is an enlarged schematic view of the second sensing electrode and a local area B thereof, where the local area B represents another implementation aspect of the second pattern.

FIG. 4C is an enlarged view of the interlaced pattern shown in FIGS. 4A and 4B.

FIG. 5 is a schematic diagram of the first pattern, the second pattern, and the first pattern and the second pattern forming an interlaced pattern.

Fig. 6A is a schematic diagram of an embodiment of a node and an angle formed between two lines forming the node.

Fig. 6B is a schematic diagram of another embodiment of an angle formed between a node and two lines forming the node.

Detailed Description

The embodiments of the present invention will be described in more detail with reference to the drawings and the reference numerals, so that those skilled in the art can implement the embodiments after studying the specification.

Referring to fig. 2, fig. 2 is a schematic diagram of a touch panel with a non-node pattern according to the present invention. As shown in fig. 2, the touch panel 1 with the non-node pattern of the present invention at least includes a transparent substrate 10, a first sensing unit 11 and a second sensing unit 12, wherein the transparent substrate 10 includes a visible touch area V and a peripheral circuit area L, wherein the peripheral circuit area L is located between the edge of the transparent substrate 10 and the visible touch area V, the visible touch area V is a non-edge area of the transparent substrate 10, the peripheral circuit area L is an edge area of the transparent substrate 10, that is, the visible touch area V is located away from the edge of the transparent substrate 10 than the peripheral circuit area L, or the peripheral circuit area L surrounds the visible touch area V.

The transparent substrate 10 may be a rigid substrate or a flexible substrate; the hard substrate can be made of glass, tempered glass, sapphire, ceramic or other appropriate materials; the flexible substrate may be made of polymer. The polymer material is, for example, Polyethylene (PE), polypropylene (PP), Polystyrene (PS), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), Nylon (Nylon), Polycarbonate (PC), Polyurethane (PU), Polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), Polyimide (PI), acrylic resin (acrylic resin), or a mixture of polymethyl methacrylate and polycarbonate. The touch panel formed by applying the flexible substrate can have flexibility, so that the touch panel is suitable for being coated on a flexible surface or any flexible object needing a touch function, such as a flexible substrate formed by a display panel or other suitable materials.

The first sensing unit 11 and the second sensing unit 12 are disposed on a first surface and a second surface of the transparent substrate 10, the first surface and the second surface need to correspond to each other, such as the corresponding upper surface and lower surface, and can also be disposed on the upper surface or lower surface of different transparent substrates 10, and then the first sensing unit 11 and the second sensing unit 12 are attached together by optical cement (not shown) according to their relative positions, so that the first sensing unit 11 and the second sensing unit 12 are only partially or completely attached to each other at the corresponding relative positions, and the first sensing unit 11 and the second sensing unit 12 are disposed on one or more substrates.

Referring to fig. 3A, fig. 3A is an enlarged schematic view of a first sensing electrode and a local area a thereof, and please refer to fig. 2, where fig. 2 illustrates that the first sensing unit 11 axially extends along a first direction Y, the first sensing unit 11 includes a plurality of first sensing electrodes 111 and a plurality of first metal leads 113, the first sensing electrodes 111 are located in the visible touch region V and axially extend along the first direction Y, the first metal leads 113 are located in the peripheral circuit region L, and the first sensing electrodes 111 are electrically connected to the first metal leads 113.

Wherein two adjacent first sensing electrodes 111 are not connected to each other, a vertical dotted line in fig. 2 indicates that there is a space between two adjacent first sensing electrodes 111, and as fig. 2 is a macro schematic diagram of a touch panel without node patterns, and an actual structure of the first sensing electrode 111 refers to an enlarged schematic diagram of a local area a in a third diagram, as shown in the local area a, the first sensing electrode 111 includes a plurality of first metal meshes (metal mesh)111A, wherein a first metal mesh 111A has four nodes, the nodes are formed by intersecting metal lines, two lines of the first metal mesh 111A forming the nodes are substantially non-linear (some linear lines can also be arranged therein), wherein each of the first metal meshes 111A is further provided with a first pattern 111B, and none of the first patterns 111B in the first metal mesh 111A intersects with the first metal mesh 111A, and the first pattern 111 itself does not have any node; preferably, the first pattern 111 is a pattern formed by interlacing a plurality of lines without nodes, and the first pattern does not have any nodes (intersections), but is configured to form an average and dense grid pattern together with the first metal grids 111A when being configured in each first metal grid 111A.

Referring to fig. 3B, fig. 3B is an enlarged schematic view of a second sensing electrode and a local area B thereof, and please refer to fig. 2, wherein fig. 2 illustrates that the second sensing unit 12 axially extends along a second direction X, the second sensing unit 12 further includes a plurality of second sensing electrodes 121 and a plurality of second metal leads 123, the second sensing electrodes 121 are located in the visible touch region V, the second metal leads 123 are located in the peripheral circuit region L, and the second sensing electrodes 121 are electrically connected to the second metal leads 123.

The two adjacent second sensing electrodes 121 are not connected to each other, a horizontal dotted line in fig. 2 indicates that there is a space between the two adjacent second sensing electrodes 121, as fig. 2 is a macro view of the touch panel without node patterns, and an actual structure of the second sensing electrode 121 refers to an enlarged view of a local area B in fig. 3B, as shown in the local area B, the second sensing electrode 121 includes a plurality of second metal meshes (metal mesh)121A, wherein a second metal mesh 121A also includes a plurality of nodes, the nodes are formed by crossing a plurality of lines, any two lines forming the nodes in the second metal mesh 121A are substantially non-linear, wherein a second pattern 121B is further disposed in each second metal mesh 121A, and none of the second patterns 121B in the second metal mesh 121A intersects with the second metal mesh 121A, and the second pattern 121B itself does not have any node; preferably, the second pattern is a pattern also composed of a plurality of lines which are interlaced without nodes, and the second pattern 121B does not have any nodes (intersections), but forms an average and dense grid pattern together with the second metal grid 121A in the overall view.

Preferably, the first pattern and the second pattern are criss-cross patterns without any nodes.

As shown in fig. 3A or fig. 3B, the first pattern and the second pattern are both # -shaped patterns; FIG. 4A or FIG. 4B shows the first pattern and the second pattern are both cross-shaped patterns; when the first pattern and the second pattern are the # -shaped patterns, the grid density of the first metal grid and the second metal grid is lower (compared with the cross-shaped patterns), the impedance is higher, the impedance is high, and the touch sensitivity is high, so that the touch sensor can be used together with a conventional touch chip; when the first pattern and the second pattern are cross-shaped patterns, the grid density is higher (compared with the cross-shaped patterns), the impedance of the first metal grid and the second metal grid is lower, and the touch sensitivity is lower when the impedance is low, so that the touch sensing chip with better sensing function is matched for use.

Note that the material of the first metal grid or the second metal grid 121A is at least one of copper, gold, aluminum, copper, silver, chromium, titanium, molybdenum, neodymium, nickel, and alloys thereof; the first metal mesh 111A or the second metal mesh 121A is exposed by a thin film mask or a glass mask.

Referring to fig. 3C, fig. 3C is an enlarged view of the interlaced pattern of fig. 3A and 3B, and fig. 4C is an enlarged view of the interlaced pattern of fig. 4A and 4B. Wherein the first sensing unit 11 and the second sensing unit 12 are disposed in an opposite relationship, such as up-down, left-right, or diagonal, as shown in fig. 3C, the first metal grids 111A and the second metal grids 121A are disposed in an opposite relationship and staggered with each other, so that the first metal grids 111A and the second metal grids 121A form a grid with a lower density and substantially equal spacing when they are staggered; and the first pattern and the second pattern are also interlaced with each other in an irregular geometric pattern (from the top view), but are actually only visually interlaced (through the transparent substrate 10) from the side view; as shown in the embodiment of the fifth figure, when the first pattern and the second pattern are interlaced with each other, a grid with a higher density and a substantially equal pitch is formed, so that the interlaced pattern with a high density and invisible to the naked eye is formed by the interlaced relative configuration relationship of the first metal grid 111A and the second metal grid 121A as a whole, the interlaced pattern includes a plurality of irregular polygonal patterns, that is, the interlaced pattern includes a plurality of triangles, trapezoids, and irregular radial patterns are irregularly distributed in the interlaced pattern, and the polygons with different shapes are not regularly distributed in the interlaced pattern.

Specifically, a plurality of irregular triangles, a plurality of irregular quadrangles, a plurality of irregular pentagons and a plurality of irregular hexagons are formed by relatively interleaving the first metal mesh 111A and the second metal mesh 121A; the irregular radial pattern is formed by interlacing the first pattern and the second pattern.

The grid width of the first metal grid or the second metal grid internally provided with the # -shaped pattern is between 3.6 and 5.4mm, the grid width of the first metal grid or the second metal grid internally provided with the cross-shaped pattern is between 2.4 and 3.6mm, and the distance between any two adjacent lines in the # -shaped and cross-shaped first pattern and second pattern is 1.2 to 1.8 mm; in addition, the widths of the first metal grid, the second metal grid, the first pattern and the second pattern are between 3-12 um.

In an embodiment of the present invention, an included angle between any two lines forming the node in the first metal grid is within an appropriate angle range, and different selections and matching are performed within the appropriate angle range; the included angle between any two lines forming the node in the second metal grid is also within a proper angle range, and different selections and matching are performed within the proper angle range, wherein the proper angle range is 75-125 degrees, the preferable angle range is 77-123 degrees, and the optimal angle range is 80-120 degrees; for example, in fig. 6A, the number of included angles formed when any two lines intersect is 4, wherein the four included angles may not be the same, for example, θ 1 to θ 4 may be 70 degrees, 110 degrees, 80 degrees, 100 degrees, and exactly 360 degrees after matching; or as shown in fig. 6B, θ 1 to θ 4 are respectively selected from 95 degrees, 85 degrees, 65 degrees and 115 degrees, and the line connecting two nodes is not a straight line but an approximately straight line with curvature or inclination, so that the staggered pattern includes irregular shapes.

In addition, although the first pattern or the second pattern has no node, the included angle between any two adjacent lines forming the first pattern or the second pattern can be further configured to be within a proper angle range, and different selections and matching can be performed within the proper angle range, wherein the proper angle range is 75-125 degrees, the preferable angle range is 77-123 degrees, and the most preferable angle range is 80-120 degrees; thus, the interlaced pattern is formed by a more irregular polygon pattern, but the whole interlaced pattern still has a certain rule because the included angle is randomly distributed in a specific range, and the whole interlaced pattern is a grid pattern formed by irregular polygons.

Preferably, the lines constituting the first pattern are substantially parallel to the first metal grid, and the lines constituting the second pattern are substantially parallel to the second metal grid; preferably, the lines constituting the first pattern are not parallel to the first metal mesh, wherein the relative intersection angle between the lines constituting the first pattern and the lines constituting the first metal mesh is between 30 and 60 degrees, and the lines constituting the second pattern are not parallel to the second metal mesh, wherein the relative intersection angle between the lines constituting the second pattern and the lines constituting the second metal mesh is between 30 and 60 degrees (see fig. 5), thereby making the formed staggered pattern more irregular, and thus more effectively avoiding the occurrence of the interference pattern effect. In addition, the first pattern and the second pattern both comprise a cross pattern and a # -shaped pattern; wherein, through proper arrangement, the first crisscross pattern can be interlaced with the second crisscross pattern, and vice versa; by such arrangement, the formed staggered pattern is more irregular and irregular, thereby effectively avoiding the occurrence of interference fringe effect.

Or, the well-shaped first pattern and the well-shaped second pattern surround the cross-shaped first pattern and the cross-shaped second pattern, for example, as shown in fig. 2, the well-shaped first pattern and the well-shaped second pattern are disposed in the visible touch area V and along the peripheral circuit area L; according to the above principle, the first pattern and the second pattern in a cross shape can also surround the first pattern and the second pattern in a cross shape.

Seeing through above-mentioned mode, enable the utility model discloses each node shape of utensil response function's metal mesh is the cross shape of non-positive mostly, but also can alternate the node of disposing some positive crosses certainly, reduce the area of node by this, and more effectively reduce the chance that diffraction effect takes place in the node, the cooperation is because of contained angle selection and non-linear lines and form irregular polygonal crisscross pattern, so each node and irregular metal mesh can not just align with black matrix (BlackMatrix) and the color filter layer of regular arrangement on the display more, and can be suitable for various mainstream displays and not produce the interference line effect.

As described above, the grid width (cross shape) of the first metal grid 111A or the second metal grid 121A can be increased to more than 2.4mm, or more preferably to more than 3.6mm (cross shape), so as to further increase the variation of the capacitance value, thereby achieving the purpose of increasing the touch signal identification.

In addition, the features of the present invention further include that the first pattern and the second pattern are disposed in the first metal grid 111A and the second metal grid 121A respectively and can be interlaced with each other, the upper stage provides that the grid width of the first metal grid 111A or the second metal grid 121A is increased, and the recognition degree of the touch signal is increased, but only the increased grid width can cause the metal grid to be easily perceived by the naked eye, so that the first pattern and the second pattern are disposed in the first metal grid 111A and the second metal grid 121A, and the grid density of the first sensing electrode 111 and the second sensing electrode 121 can be precisely maintained at a level that is not perceived by the naked eye.

In addition, the first pattern, the second pattern and the metal grid are not connected, so that the number of nodes is reduced, and the first metal grid 111A, the first pattern, the second metal grid 121A and the second pattern mentioned in the upper section are seen to form a plurality of nodes which are mutually staggered when viewed from top, but a transparent substrate is still arranged between the first metal grid 111A and the second metal grid 121A, and is actually not a node, and since the node is not a real node, the node is not expanded, so that a high-resolution glass mask is not needed, and a metal grid with few nodes can be manufactured by only using a thin film mask (such as a negative film), so that the transmittance is greatly improved, the display effect is effectively improved, and the manufacturing cost is also effectively reduced because the cost of the thin film mask is far lower than that of the glass mask.

To sum up, the present invention indeed achieves the touch panel design method that can improve the touch sensitivity while reducing the generation of interference fringes, and can reduce the manufacturing cost by using a thin film mask.

The utility model is not found in published publications, periodicals, magazines, media and exhibitions in the technology, so that the utility model has novelty, can break through the current technical bottleneck and can be implemented specifically, and has actual progress. Furthermore, the utility model discloses can solve prior art's problem, improve whole availability factor, and can reach the value of utensil industrial utilization nature.

The foregoing is illustrative of the preferred embodiment of the present invention and is not intended to limit the invention in any way, and therefore, any modification or variation of the invention disclosed herein, which is within the spirit of the invention, is intended to be covered by the following claims.

Wherein the reference numerals are as follows:

touch panel with non-node pattern

10 light-transmitting substrate

11 first induction unit

12 second sensing unit

111 first induction electrode

111A first metal grid

111B first pattern

113 first metal lead

121 second sensing electrode

121A second Metal grid

121B second pattern

123 second metal lead

A. B, C local area

V visual touch area

L peripheral circuit area

X first direction

Y second direction

1a thin film photomask

1b Metal grid

Claims (8)

1. A touch panel having a node-free pattern, comprising:

a light-transmitting substrate;

a first sensing electrode disposed on a first surface of the transparent substrate and extending along a first direction, the first sensing electrode including a plurality of first metal grids, the first metal grids including a plurality of nodes, an angle of an included angle formed between any two lines of the first metal grids forming the nodes being within a proper angle range and being determined in a random number manner within the proper angle range, the first metal grids being further provided with first patterns, none of the first patterns in the first metal grids intersecting the first metal grids, and none of the first patterns itself having any node;

a second sensing electrode disposed on a second surface of the transparent substrate and extending along a second direction, the first surface and the second surface corresponding to each other, the second sensing electrode including a plurality of second metal grids, the second metal grids including a plurality of nodes, an angle of an included angle formed between any two lines forming the nodes in the second metal grids being within a proper angle range and determined in a random number manner within the proper angle range, the second metal grids being further provided with a second pattern, neither of the second metal grids intersecting the second metal grids, and the second pattern having no node;

wherein the first pattern and the second pattern at least comprise a cross-shaped pattern or a # -shaped pattern without any node; when the first pattern and the second pattern both comprise a cross-shaped pattern and a # -shaped pattern, the first pattern and the second pattern of the # -shaped pattern surround the cross-shaped first pattern and the second pattern, and the # -shaped first pattern and the second pattern are arranged in the visible touch area of the touch panel and along the peripheral circuit area of the touch panel;

the first metal grid and the first pattern in the first metal grid, and the second metal grid and the second pattern in the second metal grid are opposite up and down across the transparent substrate and are mutually staggered to form a staggered pattern together, and the staggered pattern comprises a plurality of irregular polygons and a plurality of irregular radial patterns.

2. The touch panel with a node-free pattern of claim 1, wherein the first metal grid or the second metal grid with the # -shaped pattern has a grid width of 3.6-5.4 mm, the first metal grid or the second metal grid with the cross-shaped pattern has a grid width of 2.4-3.6 mm, and the distance between any two adjacent lines in the # -shaped and cross-shaped first and second patterns is 1.2-1.8 mm.

3. The touch panel with the node-free pattern of claim 1, wherein the staggered pattern comprises a plurality of irregular triangles, a plurality of irregular quadrilaterals, a plurality of irregular pentagons, and a plurality of irregular hexagons, and a plurality of irregular radial patterns are irregularly dispersed in the staggered pattern.

4. The touch panel with a node-free pattern of claim 1, wherein the suitable angle range is 75-125 degrees.

5. The touch panel of claim 1, wherein lines of the first metal mesh or the second metal mesh that form the nodes are mainly formed by lines having curvature or inclination.

6. The touch panel with a node-free pattern of claim 1, wherein an angle of an included angle formed by any two adjacent lines in the first pattern or the second pattern is within a proper angle range, and the proper angle range is configured in a random manner within the proper angle range, and the proper angle range is between 75 degrees and 125 degrees.

7. The touch panel with a node-free pattern of claim 1, wherein lines constituting the first pattern are substantially parallel to the first metal grid, and lines constituting the second pattern are substantially parallel to the second metal grid.

8. The touch panel with the node-free pattern of claim 1, wherein the lines constituting the first pattern are not parallel to the first metal grid, and the lines constituting the second pattern are not parallel to the second metal grid.