TW201530381A - Touch panel - Google Patents

Abstract

A touch panel includes a substrate, a touch sensing component, a plurality of wires and a ground electrode. The substrate includes a viewing area and a peripheral area connected to the viewing area. The touch sensing component is disposed on the substrate and at least located at the viewing area. The wires are disposed on the substrate and located at the peripheral area, and electrically connected to the touch sensing component. The ground line is disposed on the substrate within the peripheral area, and includes a plurality of segments separated from each other.

Description

Touch panel

The present invention relates to a touch panel, and more particularly to a touch panel that improves signal interference.

In general, electronic products are subject to electrostatic discharge damage during production, packaging, testing, handling, and even final assembly and use, which may cause malfunction. Therefore, electronic products must have electrostatic discharge protection design to effectively improve the damage of electrostatic discharge to the life of electronic products.

In the process, a ground electrode is usually formed around the internal circuit to direct the current generated by the electrostatic discharge to the ground terminal, and to avoid damage to the internal circuit caused by current flowing into the internal circuit. However, the pattern of the existing ground electrode is similar to a loop antenna, and the loop antenna converts the electrical signal in the circuit and the electromagnetic energy in the space, so that the ground electrode easily generates a signal to the internal circuit when the electronic product operates. Interference, causing unnecessary noise. Therefore, how to maintain the grounding electrode to improve the electrostatic discharge and improve its signal interference to internal circuits is one of the problems that researchers are currently trying to solve.

The invention provides a touch panel which helps to improve the signal interference of the ground electrode to the internal circuit.

A touch panel of the present invention includes a substrate, a touch sensing element, a plurality of wires, and a ground electrode. The substrate includes a display area and a peripheral area adjacent to the display area. The touch sensing element is disposed on the substrate and at least located in the display area. The wire is placed on the substrate and in the peripheral zone. The wire is electrically connected to the touch sensing element. The ground electrode is disposed on the substrate and located in the peripheral region. The ground electrode includes a plurality of line segments, and the line segments are separated from each other.

In an embodiment of the invention, the line segments are respectively connected to a ground potential.

In an embodiment of the invention, the ground electrode includes a first line segment and a second line segment, the first line segment has a first end, the second line segment has a second end, and the first end and the second end are opposite each other .

In an embodiment of the invention, the distance between the second end and the first end falls within a range of 50 microns to 5 mm.

In an embodiment of the invention, the distance between the second end and the first end falls within a range of 3 mm to 5 mm, and the ground electrode further includes a pseudo pattern, and the pseudo pattern is at the first end and the second end. between.

In an embodiment of the invention, the distance between the pseudo pattern and the first end and the distance between the pseudo pattern and the second end fall within a range of 0.2 mm to 0.6 mm, respectively. Inside.

In an embodiment of the invention, the first end includes at least one first tip directed toward the second end, and the second end includes at least one second tip directed toward the first end.

In an embodiment of the invention, the shape of the second end is complementary to the shape of the first end.

In an embodiment of the invention, the ground electrode includes a first line segment and a second line segment. A partial region of one of the first line segment and the second line segment is located between the other of the first line segment and the touch sensing element.

In an embodiment of the invention, the shortest distance between the first line segment and the second line segment is between 50 micrometers and 5 millimeters.

In an embodiment of the invention, the first line segment includes a plurality of first tips, and the second line segment includes a plurality of second tips, the first tips corresponding to the second tips.

In an embodiment of the invention, the shortest distance between the ground electrode and the adjacent wire is greater than 0.1 mm.

In an embodiment of the invention, the ground electrode is made of a metal or an alloy.

In an embodiment of the invention, the ground electrode surrounds the touch sensing element and the wire.

In an embodiment of the invention, the touch sensing element is a grid pattern, and the line width of the grid pattern is between 0.8 micrometers and 5 micrometers, and the aperture ratio of the grid pattern is greater than 85%.

In an embodiment of the invention, the ground electrode is a grid pattern.

In an embodiment of the invention, the decorative layer corresponding to the peripheral region of the substrate is further included.

In an embodiment of the invention, the second substrate and the decorative layer are further included, and the decorative layer is disposed on the second substrate and corresponds to a peripheral region of the substrate.

In an embodiment of the invention, the second substrate is a protective cover, and the protective cover is made of tempered glass or plastic.

In an embodiment of the invention, the substrate is a glass substrate or a plastic substrate.

In an embodiment of the invention, the plastic substrate comprises polyimide and has a thickness of between 2 microns and 25 microns.

Based on the above, in the above embodiment of the present invention, the ground electrode of the touch panel is mainly composed of a plurality of line segments that are separated from each other and electrically independent. Since the line segments are separated from each other, the antenna characteristics of the ground electrode can be reduced, thereby helping to reduce the absorption of noise by the ground electrode and improving the signal interference of the ground electrode to internal circuits (including the touch sensing element and the wire).

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧ touch panel

110‧‧‧Substrate

120‧‧‧Touch sensing components

122‧‧‧First electrode group

122a‧‧‧first electrode

122b‧‧‧first cable

124‧‧‧Second electrode group

124a‧‧‧second electrode

124b‧‧‧second cable

130‧‧‧Wire

140, 140a, 140b, 140c‧‧‧ grounding electrode

142, 142b, 142c‧‧‧ first line segment

144, 144b, 144c‧‧‧ second line

146‧‧‧

A1‧‧‧ display area

A2‧‧‧ surrounding area

A3‧‧‧ junction area

D, DD‧‧‧ distance

D1‧‧‧ first direction

D2‧‧‧ second direction

DM‧‧‧ shortest distance

T1‧‧‧ first tip

T2‧‧‧ second tip

X1‧‧‧ first end

X2‧‧‧ second end

FIG. 1A is a top view of a touch panel according to an embodiment of the invention.

FIG. 1B is a top view of another touch panel according to an embodiment of the invention.

2 is a top plan view of another embodiment of the touch sensing element and the wire of FIG. 1A.

3 and 4 are graphs of return loss at different frequencies of the comparative example and the experimental example of Fig. 1A, respectively.

Fig. 5 is a graph showing the return loss of the experimental example of Fig. 1B at different steps.

Fig. 6 is a top plan view showing another embodiment of the ground electrode of Fig. 1A.

7 and 8 are graphs of return loss at different frequencies of the comparative example and the experimental example of Fig. 6, respectively.

Fig. 9 is a top plan view showing still another embodiment of the ground electrode of Fig. 1A.

Fig. 10 is a top plan view showing still another embodiment of the ground electrode of Fig. 1B.

FIG. 1A is a top view of a touch panel according to an embodiment of the invention. FIG. 1B is a top view of another touch panel according to an embodiment of the invention. 2 is a top plan view of another embodiment of the touch sensing element and the wire of FIG. 1A. Referring to FIG. 1A , the touch panel 100 of the present embodiment includes a substrate 110 , a plurality of touch sensing elements 120 , a plurality of wires 130 , and a ground electrode 140 , wherein the touch sensing element 120 , the wires 130 , and the ground electrode 140 are disposed on On the substrate 110.

The substrate of the present invention comprises a substrate independent of the display or an element substrate integrated in the display; the former is, for example, an additional cover lens, and the protective cover is a hard substrate with high mechanical strength to provide protection of the lower components. The function may be, for example, a tempered glass, or a composite plastic substrate, such as a propylene carbonate (PC) and a polymethylmethacrylate (PMMA) composite substrate, such as a color filter substrate of a liquid crystal display. , the package cover of the organic light emitting diode display, etc., but not limited thereto. In other embodiments, substrate 110 contains polyimide and has a thickness between 2 microns and 25 microns.

In addition, the substrate 110 of the present embodiment can be divided into a display area A1, a peripheral area A2, and a joint area A3, wherein the display area A1 displays an image of the lower display by the transparent substrate, and the peripheral area A2 is at least located in the display area A1. One side, and corresponding to the arrangement area of the decorative layer, thereby shielding the metal line. The decorative layer may be a single layer structure of a single material, a multi-layer stack structure or a multi-layer stack structure of a plurality of materials, and the material may include ceramics, diamond-like carbon, ceramics, organic materials, a mixture of organic materials and inorganic materials, and organic-inorganic hybridization. A compound or a composite laminate thereof. FIG. 1A illustrates that the peripheral area A2 is disposed on four sides of the display area A1, but the present invention is not limited thereto.

The touch sensing element 120 is located at least in the display area A1. In this embodiment, each of the touch sensing elements 120 further extends from the display area A1 to the peripheral area A2, but the invention is not limited thereto. The touch sensing element 120 can also be disposed in the peripheral area A2 according to different design requirements. For example, the touch sensing element 120 can be extended or independently disposed at a position corresponding to the shortcut key in the peripheral area A2. So, you can omit the shortcuts The setting of the physical button.

The touch sensing element 120 of the present embodiment includes a plurality of first electrode groups 122 and a plurality of second electrode groups 124, wherein the first electrode group 122 and the second electrode group 124 are staggered with each other and patterned by The structure of the insulator or the insulating layer with the via holes forms electrical insulation at the staggered portions. In detail, each of the first electrode groups 122 extends, for example, in the first direction D1, and each of the second electrode groups 124 extends, for example, in the second direction D2, and the first direction D1 is, for example, perpendicular to the second direction D2. Each of the first electrode groups 122 includes a plurality of first electrodes 122a and a plurality of first connecting lines 122b, and each of the second electrode groups 124 includes, for example, a plurality of second electrodes 124a and a plurality of second connecting lines 124b. A connecting line 122b connects the adjacent two first electrodes 122a in the first direction D1, and each of the second connecting lines 124b connects the adjacent two second electrodes 124a in the second direction D2.

It should be noted that the present invention is not intended to limit the shape, arrangement, relative arrangement, and electrical insulation of the touch sensing element 120. The touch sensing element 120 disposed on the substrate 110 and configured to be capable of sensing falls within the scope of the present application. For example, in another embodiment, as shown in FIG. 2, the first electrode group 122 of the touch sensing element 120 may not overlap or intersect with the second electrode group 124 to form a single-layer touch structure, wherein One electrode group 122 is a driving electrode, and the second electrode group 124 is a sensing electrode. The first electrode group 122 is disposed on the substrate 110 at intervals, and the plurality of second electrode groups 124 are respectively formed between the adjacent first electrode groups 122, and the first electrode group 122 and the corresponding plurality of second electrodes The electrode set 124 defines a single touch sensing unit.

Furthermore, the touch sensing element 120 is composed of a transparent conductive material, a metal, a nanowire, a terpene, a graphene or a composite layer of the above materials, wherein the transparent conductive material comprises indium tin oxide (ITO). Indium zinc oxide (IZO), aluminum zinc oxide (AZO), and metals including silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), titanium (Ti) And at least one of molybdenum (Mo), a composite layer of the above materials, or an alloy of the above materials. In addition, the touch sensing element 120 can be patterned to form a grid pattern, the line width of the grid pattern is, for example, between 0.8 micrometers and 5 micrometers, and the aperture ratio of the grid pattern is greater than 85%.

Referring to FIG. 1A , each of the wires 130 is electrically connected to the touch sensing element 120 and extends to the bonding area A3 to transmit signals to the touch sensing element 120 and a driving element (such as a chip or a flexible printed circuit board). between. For example, the wire 130 can be directly connected to the touch sensing element 120. Alternatively, when an insulating layer (not shown) is disposed between the wire 130 and the touch sensing element 120, an opening may be formed in the insulating layer to allow one of the wire 130 and the touch sensing element 120 to pass through the opening. The other is in contact. In addition, in order to reduce the contact resistance between the wire 130 and the touch sensing element 120, the material of the wire 130 may be, for example, a metal, an alloy, or a combination thereof that is electrically conductive.

The grounding electrode 140 is located in the peripheral area A2 and the bonding area A3, and surrounds the touch sensing element 120 and the wire 130. The touch sensing element 120 and the wire 130 are located in a region surrounded by the ground electrode 140. The ground electrode 140 is, for example, an electrostatic discharge protection design of the touch panel 100. The ground electrode 140 is connected to a ground potential, and the current generated by the electrostatic discharge can be led to the ground end, and the cause is avoided. Current flows into the internal circuitry (including the touch sensing component 120 and the wires 130) causing damage. In the present embodiment, the shortest distance DM of the ground electrode 140 and the adjacent wire 130 is, for example, greater than 0.1 mm.

Since the grounding electrode 140 disposed on the outermost periphery of the touch sensing element 120 and the wire 130 is similar to a loop antenna, it converts the electrical signal in the circuit and the electromagnetic energy in the space, so when the touch panel 100 operates At the same time, the ground electrode 140 easily generates signal interference to the internal circuit, causing unnecessary noise. In view of this, the present embodiment causes the ground electrode 140 to be composed of a plurality of mutually separated and electrically independent line segments to reduce the antenna characteristics, thereby contributing to reducing the absorption of the ground electrode 140 for noise, and improving the ground electrode 140. Signal interference to internal circuits.

In detail, the ground electrode 140 of the present embodiment includes, for example, a first line segment 142 and a second line segment 144, wherein the first line segment 142 and the second line segment 144 are separated from each other. Further, the first line segment 142 and the second line segment 144 extend from the peripheral region A2 to the junction region A3, respectively, and the first line segment 142 and the second line segment 144 are respectively connected to the ground potential. Therefore, although the ground electrode 140 is broken into a plurality of line segments, the ground electrode 140 can maintain the required antistatic discharge capability. In an actual process, the ground electrode 140 and the wire 130 may be patterned by an electrode layer through the same process. In other words, the ground electrode 140 can be made of the same material as the wire 130, that is, a metal, an alloy, or a combination thereof. However, in other embodiments, the ground electrode 140 is a mesh pattern, but is not limited thereto.

In addition, the first line segment 142 has a first end X1 located at the peripheral area A2, The second line segment 144 has a second end X2 located at the peripheral zone A2, wherein the first end X1 and the second end X2 are opposite each other. In the present embodiment, the distance D between the second end X2 and the first end X1 falls, for example, in the range of 50 micrometers to 5 millimeters. This distance D is also the shortest distance between the first line segment 142 and the second line segment 144. It should be noted that the embodiment does not limit the position of the first end X1 and the second end X2 (ie, the disconnection between the first line segment 142 and the second line segment 144), and FIG. 1A illustrates the disconnection. It is located at the corner of the display area A1. However, according to different design requirements, the break can also be located at other positions on the peripheral area A2, such as the position of the shortcut keys in the peripheral area A2.

In another embodiment, one of the first line segment 142 and the second line segment 144 may also extend to the periphery of the other of the other, such that the first line segment 142 and the second line segment 144 partially overlap. As shown in FIG. 1B , the first line segment 142 can extend to the periphery of the second line segment 144 such that a portion of the second line segment 144 is located between the first line segment 142 and the touch sensing element 120 . In another embodiment, the first line segment 142 may also extend to the inner side of the second line segment 144 such that a portion of the first line segment 142 is located between the second line segment 144 and the touch sensing element 120. The arrangement of the first line segment 142 and the second line segment 144 partially overlapping can reduce the flow of electric charge from the first end X1 and the second end X2 into the internal circuit (including the touch sensing element 120 and the wire 130 of FIG. 1A). Probability to improve the damage of the internal circuit caused by electrostatic discharge, and also reduce the signal interference of the ground electrode to the internal circuit.

3 and FIG. 4 are graphs of return loss at different frequencies of the comparative example and the experimental example of FIG. 1A, respectively, wherein the comparative example of FIG. 3 uses an unbroken annular ground electrode, and the experiment of FIG. 4 The example uses a broken ring ground electrode, and the first The distance between the first end of the line segment and the second end of the second line segment is 0.2 mm. The vertical axis of FIGS. 3 and 4 is the magnitude of the parameter S11 in the return loss, wherein the smaller the value of the parameter S11, the better the antenna characteristics are, and the more likely the signal interference is. As can be seen from FIG. 3 and FIG. 4, the parameter S11 is lower than -10 dB when the annular ground electrode is not disconnected, and the parameter S11 is greater than -10 dB when the annular ground electrode is disconnected. In other words, in this experimental example, by breaking the ground electrode into a plurality of line segments, it is helpful to reduce the antenna characteristics, thereby contributing to reducing the absorption of noise by the ground electrode and improving the signal interference of the ground electrode to the internal circuit.

5 is a graph of return loss at different frequencies of the comparative example and the experimental example of FIG. 1B, wherein the experimental example of FIG. 5 employs a broken annular ground electrode, and the first line segment 142 and the second line segment 144 parts overlap. As can be seen from FIG. 5, the parameter S11 is greater than -3.5 dB when the annular ground electrode is disconnected and the first line segment 142 and the second segment line 144 are partially overlapped. In other words, in this experimental example, by breaking the ground electrode into a plurality of line segments and partially overlapping the plurality of line segments, it is helpful to reduce the antenna characteristics, thereby contributing to reducing the absorption of noise by the ground electrode and improving the ground electrode to the inside. Signal interference in the circuit.

Fig. 6 is a top plan view showing another embodiment of the ground electrode of Fig. 1A. Referring to FIG. 6, the ground electrode 140a of the present embodiment has a similar structure to the ground electrode 140 of FIG. 1A, and the same components are denoted by the same reference numerals and will not be described again. The main difference from the ground electrode 140 is that the ground electrode 140a further includes a pseudo pattern 146, and the pseudo pattern 146 is located between the first end X1 and the second end X2.

Specifically, the distance D between the second end X2 and the first end X1 falls at 3 millimeters. When the meter is in the range of 5 mm, the distance DD between the pseudo pattern 146 and the first end X1 and the distance DD between the pseudo pattern 146 and the second end X2 fall between 0.2 mm and 0.6 mm, respectively, through the arrangement of the pseudo pattern 146. In the range, the probability of electric charge flowing from the first end X1 and the second end X2 into the internal circuit (including the touch sensing element 120 and the wire 130 of FIG. 1A) is reduced. In this way, the design of the ground electrode 140a can not only improve the damage of the internal circuit caused by the electrostatic discharge, but also reduce the signal interference of the ground electrode to the internal circuit.

7 and FIG. 8 are graphs of return loss at different frequencies of the comparative example and the experimental example of FIG. 6, respectively, wherein the comparative example of FIG. 7 is a broken annular ground electrode without a pseudo pattern, and FIG. 8 The experimental example is a broken annular ground electrode provided with a pseudo pattern, and the distance between the first end of the first line segment and the second line segment of the comparative example and the experimental example is 3 mm. As can be seen from FIG. 7 and FIG. 8, the parameter S11 is lower than -10 dB when the pseudo pattern is not set, and the parameter S11 is greater than -10 dB when the pseudo pattern is set. In other words, in this experimental example, by breaking the ground electrode into a plurality of line segments, and when the spacing between adjacent line segments is large (for example, 3 mm or more), a pseudo pattern is arranged between adjacent line segments, in addition to improving electrostatic discharge for internal circuits. In addition to the damage, it also helps to reduce the antenna characteristics of the ground electrode, which helps to reduce the absorption of noise by the ground electrode and improve the signal interference of the ground electrode to the internal circuit.

Fig. 9 is a top plan view showing still another embodiment of the ground electrode of Fig. 1A. Referring to FIG. 9, the ground electrode 140b of the present embodiment has a similar structure to the ground electrode 140 of FIG. 1A, and the same components are denoted by the same reference numerals. Narration. The main difference from the ground electrode 140 is that the first end X1 of the first line segment 142b of the ground electrode 140b includes at least one first tip T1 pointing to the second end X2 of the second line segment 144b, and the shape of the second end X2 is The shape of the first end X1 is complementary. In detail, the first end X1 of the embodiment includes, for example, a plurality of first tips T1, and the second end X2 includes a plurality of second recessed ends (not labeled) corresponding to the first tips T1. Further, the second end X2 includes a plurality of second tips T2, and the first end X1 includes a plurality of first recessed ends (not labeled) corresponding to the second tips T2. The arrangement of the first tip T1 and the second tip T2 can increase the probability of tip discharge, thereby contributing to the improvement of the antistatic discharge capability of the ground electrode 140b, and the reliability of the touch panel can be improved.

It should be noted that the above embodiments are only used to illustrate the implementable state of the ground electrode, but the invention is not limited thereto. In another embodiment, when the distance D between the second end X2 of FIG. 8 and the first end X1 falls within a range of 3 mm to 5 mm, the second end X2 and the first end X1 may also be disposed. The pattern is imitation, and the shape of the pseudo pattern adjacent to the first end X1 may be complementary to the shape of the first end X1, and the shape of the pseudo pattern adjacent to the second end X2 may be complementary to the shape of the second end X2.

Fig. 10 is a top plan view showing still another embodiment of the ground electrode of Fig. 1B. Referring to FIG. 10, the ground electrode 140c of the present embodiment has a similar structure to the ground electrode 140 of FIG. 1B, and the same components are denoted by the same reference numerals and will not be described again. The main difference from the ground electrode 140 is that the first line segment 142c of the ground electrode 140c includes a plurality of first tips T1, and the second line segment 144c includes a plurality of second tips T2, wherein the first tips T1 correspond to the second tips T2. Specifically, the first tips T1 point to the second line segment 144c, and the second tips T2 point to the A line segment 142c is formed such that the first line segment 142c is complementary in shape to the second line segment 144c. In detail, the second line segment 144c of the embodiment includes a plurality of second recessed ends (not labeled) corresponding to the first tip T1, and the first line segment 142c includes a plurality of first recessed ends corresponding to the second tip T2 ( Not marked). In the present embodiment, the shortest distance D between the first line segment 142c and the second line segment 144c is between 50 micrometers and 5 millimeters. By partially overlapping the first line segment 142c and the second line segment 144c and the arrangement of the first tip T1 and the second tip T2, the antistatic discharge capability of the ground electrode 140c can be improved, and the possibility of damage of the electrostatic discharge to the internal circuit can be reduced. It can reduce the signal interference of the ground electrode to the internal circuit. In this way, the reliability of the touch panel can be improved.

In summary, in the above embodiment of the present invention, the ground electrode of the touch panel is mainly composed of a plurality of line segments separated from each other and electrically independent. Since the line segments are separated from each other to help reduce the antenna characteristics of the ground electrode, the absorption of noise by the ground electrode can be reduced, and the signal interference of the ground electrode to internal circuits (including the touch sensing element and the wire) can be improved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧ touch panel

110‧‧‧Substrate

120‧‧‧Touch sensing components

122‧‧‧First electrode group

122a‧‧‧first electrode

122b‧‧‧first cable

124‧‧‧Second electrode group

124a‧‧‧second electrode

124b‧‧‧second cable

130‧‧‧Wire

140‧‧‧Ground electrode

142‧‧‧First line segment

144‧‧‧second line

A1‧‧‧ display area

A2‧‧‧ surrounding area

A3‧‧‧ junction area

D‧‧‧Distance

D1‧‧‧ first direction

D2‧‧‧ second direction

DM‧‧‧ shortest distance

X1‧‧‧ first end

X2‧‧‧ second end

Claims (21)

A touch panel includes a substrate including a display area and a peripheral area adjacent to the display area, a touch sensing element disposed on the substrate and located at least in the display area, and a plurality of wires disposed on the substrate And in the peripheral area, the wires are electrically connected to the touch sensing element; and a ground electrode is disposed on the substrate and located in the peripheral area, wherein the ground electrode comprises a plurality of line segments, the line segments being separated from each other. The touch panel of claim 1, wherein the line segments are respectively connected to a ground potential. The touch panel of claim 1, wherein the ground electrode comprises a first line segment and a second line segment, the first line segment has a first end, and the second line segment has a second end The first end and the second end are opposite each other. The touch panel of claim 3, wherein the distance between the second end and the first end falls within a range of 50 micrometers to 5 millimeters. The touch panel of claim 4, wherein the distance between the second end and the first end falls within a range of 3 mm to 5 mm, and the ground electrode further includes a pseudo pattern. Positioned between the first end and the second end. The touch panel of claim 5, wherein the distance between the pseudo pattern and the first end and the distance between the pseudo pattern and the second end fall within a range of 0.2 mm to 0.6 mm, respectively. The touch panel of claim 3, wherein the first end package At least one first tip directed to the second end is included, and the second end includes at least one second tip directed toward the first end. The touch panel of claim 7, wherein the shape of the second end is complementary to the shape of the first end. The touch panel of claim 1, wherein the ground electrode comprises a first line segment and a second line segment, and a partial region of one of the first line segment and the second line segment is located in the other Between the person and the touch sensing element. The touch panel of claim 9, wherein the shortest distance between the first line segment and the second line segment is between 50 micrometers and 5 millimeters. The touch panel of claim 9, wherein the first line segment comprises a plurality of first tips, and the second line segment comprises a plurality of second tips, the first tips corresponding to the second tips. The touch panel of claim 1, wherein the ground electrode has a shortest distance from the adjacent one of the wires of more than 0.1 mm. The touch panel of claim 1, wherein the ground electrode is made of a metal or an alloy. The touch panel of claim 1, wherein the ground electrode surrounds the touch sensing element and the wires. The touch panel of claim 1, wherein the touch sensing element is a grid pattern, and the grid pattern has a line width of between 0.8 micrometers and 5 micrometers, the grid pattern The aperture ratio is greater than 85%. The touch panel of claim 1, wherein the grounding electrode The poles are grid patterns. The touch panel of claim 1, further comprising a decorative layer corresponding to the peripheral region of the substrate. The touch panel of claim 1, further comprising a second substrate and a decorative layer disposed on the second substrate and corresponding to the peripheral region of the substrate. The touch panel of claim 18, wherein the second substrate is a protective cover, and the protective cover is made of tempered glass or plastic. The touch panel of claim 18, wherein the substrate is a glass substrate or a plastic substrate. The touch panel of claim 20, wherein the plastic substrate comprises polyimide and has a thickness of between 2 micrometers and 25 micrometers.