CN103902118B - touch panel - Google Patents

Abstract

The invention discloses a touch panel, which comprises a substrate, a plurality of first electrode wires and a plurality of second electrode wires. The first electrode lines are arranged on the substrate in parallel and extend along a first axial direction, and comprise a plurality of first electrode pads and a plurality of first bridging parts connected with the first electrode pads in series. Each first electrode pad comprises a first central part and two first side parts connected with the first central part. The second electrode lines are arranged on the substrate in parallel and extend along a second axial direction perpendicular to the first axial direction, and comprise a plurality of second electrode pads and a plurality of second bridging parts connected with the second electrode pads in series. The second electrode pads of the second electrode lines are alternately arranged with the first electrode lines. Each second electrode pad comprises a second central part and two second side parts connected with the second central part.

Description

touch panel

technical field

The invention relates to a panel, in particular to a touch panel.

Background technique

In recent years, with the rapid development and application of digital information and wireless mobile communication technology, many electronic information products, such as mobile phones (Mobile Phone), palmtop computers (Handheld PC) or smart phones (Smart Phone), etc. The input method has changed from the traditional keyboard or mouse to the use of a touch panel (Touch Panel) as an input device to improve its operation convenience.

Touch panels can be roughly divided into resistive, capacitive, optical, acoustic, and electromagnetic sensing methods according to their sensing methods. Among them, capacitive touch panels have been widely used due to their advantages such as fast response time, good reliability, and high durability. It is widely used in electronic products. In the capacitive touch panel, single-layer or multi-layer transparent electrode patterns are formed on the substrate to form a touch sensing layer (Touch Sensor). Accordingly, the user can use a touch tool, such as a stylus, or use a finger to directly touch the surface of the touch panel to sense and operate the touch panel. Therefore, the technology of improving the touch sensitivity of the touch panel has gradually become the focus of attention.

Contents of the invention

The purpose of the present invention is to provide a touch panel with high touch sensitivity (touching sensitivity).

To achieve the above purpose, the touch panel of the present invention includes a substrate, a plurality of first electrode lines and a plurality of second electrode lines. The first electrode lines are arranged parallel to each other on the substrate, wherein each first electrode line extends along a first axial direction, and includes a plurality of first electrode pads and a plurality of first bridge portions connecting the first electrode pads in series. Each first electrode pad includes a first central portion and two first side portions. The first central portion is rectangular and has a first width perpendicular to the first axis. The two first side portions connect opposite two sides of the first central portion along the first axial direction. Each first side portion is rectangular and has a second width perpendicular to the first axis, and the first width is greater than the second width. Each first bridging portion connects corresponding two first side portions of two adjacent first electrode pads. The second electrode lines are arranged parallel to each other on the substrate, wherein each second electrode line extends along a second axial direction, and includes a plurality of second electrode pads and a plurality of second bridges connecting the second electrode pads in series. The second axis is perpendicular to the first axis, and the first electrode line and the second electrode line are electrically insulated from each other. The second electrode pads of each second electrode line are arranged alternately with the first electrode lines along the first axis. Each second electrode pad includes a second central portion and two second side portions. The second central portion is rectangular, located between corresponding two first bridging portions of two adjacent first electrode lines, and has a third width perpendicular to the first axis. The two second side portions connect opposite two sides of the second central portion along the first axial direction. Each second side portion is rectangular and has a fourth width perpendicular to the first axis, and the third width is greater than the fourth width. Each second bridging portion overlaps with a corresponding first bridging portion, and each second bridging portion connects two adjacent second central portions in the second axial direction in series.

Based on the above, the second electrode pads of the second electrode lines of the touch panel of the present invention are arranged alternately with the first electrode lines in the first axial direction, and the shapes of the first electrode pads and the second electrode pads are symmetrical, which can effectively utilize the substrate The layout space above can be increased, and the mutual inductance capacitance between adjacent first electrode pads and second electrode pads can be increased. Accordingly, the touch panel has higher touch sensitivity.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

1 is a schematic diagram of a touch panel according to an embodiment of the present invention;

Fig. 2 is a partially enlarged schematic diagram of the first electrode line in Fig. 1;

Fig. 3 is a partially enlarged schematic diagram of the second electrode line in Fig. 1;

4 is a schematic diagram of a touch panel according to another embodiment of the present invention;

FIG. 5 is a partially enlarged schematic diagram of the touch panel of FIG. 1;

6 to 11 are partially enlarged schematic diagrams of touch panels in other embodiments of the present invention.

Symbol Description

100, 100a, 100b, 100c, 100e, 100f, 100g: Touch panel

110: Substrate

120: first electrode wire

122: first electrode pad

122a: First Central Section

122b: first side

122c: opening

124: The first bridging part

130: Second electrode wire

132: Second electrode pad

132a: Second Central Section

132b: second side

134: Second bridging part

140: First wire

150: Second wire

160: Third wire

170: Fourth wire

180, 180a: quasi-pattern

D1: first axis

D2: second axis

g: gap

L1, L2: side

N: node

R: signal cell area

S1: first side

S2: second side

S3: third side

S4: Fourth side

w1: first width

w2: second width

w3: third width

w4: fourth width

detailed description

FIG. 1 is a schematic diagram of a touch panel according to an embodiment of the invention. Please refer to FIG. 1 , in this embodiment, the touch panel 100 includes a substrate 110 , a plurality of first electrode lines 120 and a plurality of second electrode lines 130 . The first electrode lines 120 are arranged parallel to each other on the substrate 110 , and each first electrode line 120 extends along the first axis D1. The second electrode lines 130 are arranged parallel to each other on the substrate 110, and each second electrode line 130 extends along the second axis D2, wherein the second axis D2 is perpendicular to the first axis D1, and the first electrode lines 120 and the second axis D1 are perpendicular to each other. The two electrode lines 130 are electrically insulated from each other. The substrate 110 is, for example, glass, plastic or other substrates, and the first electrode lines 120 and the second electrode lines 130 are, for example, indium tin oxide (Indium Tin Oxide, ITO), metal mesh (metal mesh), silver nano wire (silver nano wire), carbon nano tube (carbon nano tube, CNT), polymer conductive layer or electrode wires made of other materials, and can be produced by photolithography, mesh Screen printing or other manufacturing processes are formed on the substrate 110 , and the present invention does not limit the types and manufacturing methods of the substrate 110 , the first electrode lines 120 and the second electrode lines 130 .

FIG. 2 is a partially enlarged schematic view of the first electrode line in FIG. 1 . Please refer to FIG. 1 and FIG. 2 , in this embodiment, each first electrode line 120 extends along the first axis D1, wherein each first electrode line 120 includes a plurality of first electrode pads 122 and first electrode pads connected in series 122 of a plurality of first bridging portions 124 , and the first bridging portions 124 respectively connect two adjacent first electrode pads 122 in series along the first axis D1 . Each first electrode pad 122 includes a first central portion 122a and two first side portions 122b. The first central portion 122a is rectangular and has a first width w1 perpendicular to the first axis D1. The two first side portions 122b are connected to opposite sides of the first central portion 122a along the first axial direction D1. Each first side portion 122b is rectangular and has a second width w2 perpendicular to the first axial direction D1, and the first width w1 is greater than the second width w2. Therefore, the two first side portions 122b can be regarded as protruding from opposite sides of the first central portion 122a in the first axial direction D1.

In this embodiment, the shape of the first electrode pad 122 is similar to “crisscross” and has multiple sides, and the first central portion 122a of each first electrode pad 122 and one of the first side portions 122b And the first central portion 122a and the corresponding first side portion 122b of another adjacent first electrode pad 122 may form an “H” shape along the first axis D1. Therefore, the two first side portions 122b are actually symmetrically connected to opposite sides of the first central portion 122a, so that the first electrode pad 122 has a symmetrical shape in the first axis D1 and the second axis D2, and The number of sides thereof is increased via the first side portion 122b. At this time, the first bridging portions 124 connecting the two adjacent first electrode pads 122 in series are actually connected to the corresponding two first side portions 122b of the two adjacent first electrode pads 122 in the first axial direction D1, so that the first The electrode wire 120 extends along the first axis D1.

FIG. 3 is a partially enlarged schematic view of the second electrode line in FIG. 1 . Please refer to FIG. 1 and FIG. 3 , in this embodiment, the second electrode lines 130 extend along the second axis D2 perpendicular to the first axis D1, wherein each second electrode line 130 includes a plurality of second electrode pads 132 And a plurality of second bridging portions 134 connecting the second electrode pads 132 in series, and the second bridging portions 134 are respectively connecting two adjacent second electrode pads 132 in series along the second axis D2. Each second electrode pad 132 includes a second central portion 132a and two second side portions 132b. The second central portion 132a is rectangular and has a third width w3 perpendicular to the first axis D1. The two second side portions 132b are connected to opposite sides of the second central portion 132a along the first axial direction D1. Each second side portion 132b is rectangular and has a fourth width w4 perpendicular to the first axial direction D1, and the third width w3 is larger than the fourth width w4. Therefore, the two second side portions 132b can be regarded as protruding from opposite sides of the second central portion 132a in the first axial direction D1.

In this embodiment, the shape of the second electrode pad 132 is similar to “crisscross” with multiple sides, and half of each second electrode pad 132 along the second axis D2 is connected to the adjacent other electrode pad 132 . The other half of the second electrode pad 132 along the second axis D2 can form an "I" shape along the second axis D2, and the "I" shape can be regarded as the result of rotating the "H" shape by 90 degrees. Therefore, the two second side portions 132b are actually symmetrically connected to opposite sides of the second central portion 132a, so that the second electrode pad 132 has a symmetrical shape in the first axis D1 and the second axis D2, and The number of sides is increased via the second side portion 132b. In addition, the first electrode pad 122 and the second electrode pad 132 have similar shapes and sizes, which can increase the sensing linearity of the touch panel 100 in the first axis D1 and the second axis D2. At this time, the second bridging portions 134 that connect the two adjacent second electrode pads 132 in series are actually connected in series with the corresponding two second central portions 132a of the two adjacent second electrode pads 132 in the second axial direction D2, so that the first The two electrode wires 130 extend along the second axis D2.

Please refer to FIG. 1 to FIG. 3 at the same time. In this embodiment, the first electrode line 120 and the second electrode line 130 are disposed on the same surface of the substrate 110 at the same time, wherein the first electrode pad 122 of the first electrode line 120 and the second electrode line The second electrode pads 132 of the electrode lines 130 are actually coplanar, and the first electrode pads 122 and the second electrode pads 132 do not overlap. The second electrode pads 132 of each second electrode line 130 are arranged alternately with the first electrode lines 120 on the first axis D1, so that the first electrode lines 120 extending along the first axis D1 are aligned with the first electrode lines 120 extending along the second axis D2. The extended second electrode lines 130 perpendicularly cross each other. Each second bridging portion 134 overlaps with the corresponding first bridging portion 124, wherein the first bridging portion 124 is directly disposed on the substrate 110, and the second bridging portion 134 straddles the first bridging portion 124 and is disposed on the substrate 110, But the present invention is not limited to the above configuration. There is a dielectric layer (not shown) or other components that can electrically insulate the first bridge portion 124 and the second bridge portion 134 between the first bridge portion 124 and the second bridge portion 134 , so that the first electrode lines 120 It is electrically insulated from the second electrode line 130 .

In this embodiment, the second central portion 132 a of the second electrode pad 132 is located between the corresponding two first bridge portions 124 of two adjacent first electrode lines 120 . Since each of the first bridging portions 124 is respectively connected to the corresponding two first side portions 122b along the first axial direction D1, each second central portion 132a can be regarded as being located at the four first bridging portions 124 connected to the corresponding two first bridging portions 124. between the side portions 122b. Furthermore, each first side portion 122b is located between two second central portions 132a of adjacent second electrode wires 130 along the second axis D2, and is connected via the first bridging portion 124 along the first axis D1. The other first side portion 122b, and each second side portion 132b is located between the two first central portions 122a of two adjacent first electrode wires 120 along the second axis D2, and corresponds along the first axis D1 on the other second side portion 132b.

It can be seen that the first electrode pads 122 and the second electrode pads 132 are arranged alternately via the first side portions 122 b and the second side portions 132 b, so that the sides of the first electrode pads 122 and the second electrode pads 132 can correspond to each other. For example, in this embodiment, adjacent first electrode pads 122 and second electrode pads 132 correspond to each other with three sides. Accordingly, the strength of the mutual inductance between the first electrode pad 122 and the second electrode pad 132 can be increased to increase the mutual inductance capacitance thereof. In addition, since the first electrode pad 122 of the first electrode line 120 and the second electrode pad 132 of the second electrode line 130 have symmetrical shapes and similar dimensions in the first axis D1 and the second axis D2, The mutual capacitance of the touch panel 100 in all directions can be increased, so that the touch panel 100 has better sensing linearity in the operation of touch signals.

On the other hand, please refer to FIG. 1 to FIG. 3 , in this embodiment, the first electrode lines 120 are not in contact with each other, as shown in FIG. 2 . Therefore, each of the first electrode lines 120 can serve as a signal line for transmitting signals along the first axis D1, such as one of a scan line or a data line. In addition, every two adjacent second electrode lines 130 are connected to each other through the second side portions 132 b of the corresponding second electrode pads 132 . Therefore, every two adjacent second electrode lines 130 are connected to each other by the second side portions 132b of the corresponding second electrode pads 132 in the first axial direction D1 and are electrically connected, so that every two connected second electrode lines The two electrode lines 130 can serve as one signal line for transmitting signals along the second axis D2 at the same time, such as a scan line or a data line. In other embodiments, the second electrode lines 130 may not be in contact with each other, so that each second electrode line 130 can be used as a signal line for transmitting signals along the second axis D2. Adjacent second electrode lines 130 must be connected to each other.

Please refer to FIG. 1 , in this embodiment, the touch panel 100 can be divided into a plurality of signal unit regions R. Referring to FIG. Each signal unit region R is rectangular in shape and arranged in an array on the substrate 110 . Each signal unit area R has two signal lines for transmitting signals along the first axis D1 and one signal line for transmitting signals along the second axis D2, and each signal unit area R has four nodes N (node), The two signal lines transmitting signals along the first axis D1 are the above-mentioned two first electrode lines 120, and one signal line transmitting signals along the second axis D2 is the above-mentioned two second electrode lines 130 conducting with each other. , and the node is the intersection of the first bridge portion 124 and the second bridge portion 134 . At this time, since the mutual capacitance between the first electrode pad 122 and the second electrode pad 132 is increased, the strength of the mutual inductance between the first electrode line 120 and the second electrode line 130 passing through each signal unit region R is enhanced. Accordingly, the touch panel 100 has high touch sensitivity, and is suitable for use in electronic devices with small contact areas of operating tools (such as fingers or stylus pens), and the touch control of the touch panel 100 can also be used. Sensitivity has been increased to support touch states with other non-conductive shielding materials such as gloves.

In this embodiment, the length of each side L1 and L2 of each rectangular signal unit region R is between 2 mm and 6 mm, wherein the length of the side L1 is approximately equal to that of the two first electrodes The sum of the lengths of the first width w1 of the first central portion 122a of the pad 122 and the fourth width w4 of the second side portions 132b of the two adjacent second electrode pads 132, and the length of the side L2 is approximately equal to the length of the two second side portions 132b. The length of the two electrode pads 132 along the first axis D1. Therefore, it can be known that the sum of the first width w1 of the first central portion 122a of each first electrode pad 122 and the fourth width w4 of the adjacent second side portion 132b along the first axis D1 is between 1 mm and 3 mm. , and the length of the second electrode pad 132 in the first axial direction D1 is between 1 mm and 3 mm. However, the present invention does not limit the ratio of the first width w1 to the second width w2, does not limit the ratio of the third width w3 to the fourth width w4, and does not limit the ratio of the first width w1 to the second width w2 to be equal to the third The ratio of the width w3 to the fourth width w4. The sizes of the first width w1 , the second width w2 , the third width w3 and the fourth width w4 can be adjusted according to requirements.

Please continue to refer to FIG. 1 , in this embodiment, the touch panel 100 further includes a plurality of first wires 140 and a plurality of third wires 160 . The first wires 140 are disposed on the first side S1 of the substrate 110, wherein every two adjacent first electrode lines 120 are connected to each other through the corresponding first wires 140 through the two first electrode pads 122 close to the first side S1. connect. The third wire 160 is disposed on the third side S3 of the substrate 110, wherein every two adjacent second electrode lines 130 are connected to each other through the corresponding third wire 160 through the two second electrode pads 132 close to the third side S3. connected, and the third side S3 is adjacent to the first side S1. Accordingly, the first electrode lines 120 for transmitting signals along the first axis D1 and the second electrode lines 130 for transmitting signals along the second axis D2 can transmit signals to the first wire 140 and the third wire respectively. 160.

FIG. 4 is a schematic diagram of a touch panel according to another embodiment of the present invention. Please refer to FIG. 4 , in this embodiment, in addition to the first wires 140 and the third wires 160 , the touch panel 100 a further includes a plurality of second wires 150 and a plurality of fourth wires 170 . The second wire 150 is disposed on the second side S2 of the substrate 110 opposite to the first side S1, wherein every two adjacent first electrode lines 120 pass through the two first electrode pads 122 close to the second side S2 The corresponding second wires 150 are connected to each other. The fourth wire 170 is disposed on the fourth side S4 of the substrate 110 opposite to the third side S3, wherein every two adjacent second electrode lines 130 pass through the two second electrode pads 132 close to the fourth side S4 The corresponding fourth wires 170 are connected to each other, and the second side S2 is adjacent to the fourth side S4. Therefore, every two adjacent first electrode lines 120 in the touch panel 100a are connected in parallel with each other, and every two adjacent second electrode lines 130 are connected in parallel with each other, so that the impedance of the first electrode lines 120 and the second electrode lines 130 get smaller. In addition, the first conductive wire 140 and the second conductive wire 150 are respectively arranged at both ends of the first electrode line 120, and the third conductive wire 160 and the fourth conductive wire 170 are respectively arranged at both ends of the second electrode line 130, so that the touch panel can The sensing pattern of the touch panel 100a is relatively symmetrical, so that the sensitivity of the four sides S1 to S4 of the touch panel 100a tends to be consistent.

FIG. 5 is a partially enlarged schematic view of the touch panel in FIG. 1 . Please refer to FIG. 5 , in this embodiment, there are a plurality of gaps g between the first electrode pad 122 and the second electrode pad 132 . The width of the gap g is, for example, between 10 micrometers (Micrometer) and 500 micrometers, but the present invention is not limited thereto. When the adjacent first electrode pads 122 and second electrode pads 132 are too close to each other, the touch sensitivity between the first electrode pads 122 and the second electrode pads 132 is too high, and the touch panel 100 is subject to external interference ( For example, a false touch) will be more obvious. Therefore, a certain distance is set between the first electrode pad 122 and the second electrode pad 132, so that the gap g is located between the adjacent first electrode pad 122 and the second electrode pad 132, which can reduce the external interference of the touch panel 100 , and does not reduce the touch sensitivity too much to affect the use of the touch panel 100 .

6 to 11 are partially enlarged schematic diagrams of touch panels in other embodiments of the present invention. Please refer to FIG. 6 first. In the embodiment of FIG. 6 , the touch panel 100 b further includes a plurality of dummy patterns 180 disposed in the gap g. The pseudo-pattern 180 of the embodiment of Fig. 6 is strip type, so a corresponding pseudo-pattern 180 is configured in each gap g, wherein the length of the pseudo-pattern 180 is between 25 microns and 450 microns, and the pseudo-pattern 180 is in line with the corresponding The distance between the adjacent first electrode pads 122 and the distance between the dummy pattern 180 and the adjacent second electrode pads 132 are between 10 microns and 40 microns. When there is a gap g between the first electrode pad 122 and the second electrode pad 132 , optical problems may occur in the touch panel 100b, for example, the user can see the existence of the gap g from the outside of the touch panel 100b with naked eyes. Therefore, when the touch panel 100b reduces the mutual inductance capacitance between the first electrode pad 122 and the second electrode pad 132 by setting the gap g, thereby reducing the external interference of the touch panel 100b, the dummy pattern 180 is arranged in the gap g In this way, the above-mentioned optical problems can be reduced at the same time.

Similarly, please refer to FIG. 7 , in the embodiment of FIG. 7 , the touch panel 100c includes a plurality of dummy patterns 180a disposed in the gap g. The pseudo-pattern 180a of the embodiment of Fig. 7 is a square shape, so a plurality of pseudo-patterns 180a are correspondingly arranged in each gap g, wherein the length of the pseudo-pattern 180a is between 25 micrometers and 450 micrometers, and the pseudo-patterns 180a and the corresponding The distance between the adjacent first electrode pads 122 and the distance between the dummy pattern 180 a and the adjacent second electrode pads 132 are between 10 micrometers and 40 micrometers. Therefore, the dummy pattern 180a can also achieve the function of the dummy pattern 180 described above.

Please refer to FIG. 8 , in this embodiment, each first electrode pad 122 of the touch panel 100d has an opening 122c. The opening 122c is located at the first central portion 122a of each first electrode pad 122 . The first electrode pad 122 has an opening 122 c for reducing the area of the first electrode pad 122 , thereby reducing the capacitance of the first electrode pad 122 . In addition, the opening 122c is disposed on the first central portion 122a, so that the edge of the first electrode pad 122 is not affected by the opening 122c and can maintain mutual inductance with the adjacent second electrode pad 132 . In addition, the first electrode pad 122 of this embodiment is an example of having one opening 122c, but the present invention does not limit the number of openings 122c of the first electrode pad 122, and the first electrode pads of other embodiments may have More than two openings 122c.

Please refer to FIG. 9 to FIG. 10. In the embodiment shown in FIG. 9 and FIG. 180 bits are in gap g. The difference between the touch panels 100e and 100f is that the first electrode pad 122 of the touch panel 100e has one opening 122c, while the first electrode pad 122 of the touch panel 100f has two openings 122c. In the embodiment shown in FIG. 9 and FIG. 10 , the elongated pseudo-pattern 180 is not only disposed in the gap g, but also disposed in the opening 122c, wherein the length of the pseudo-pattern 180 is between 25 micrometers and 450 micrometers. And the distance between the dummy pattern 180 and the adjacent first electrode pads 122 is between 10 microns and 40 microns. When the first electrode pad 122 has an opening 122c, the opening 122c may also cause the above-mentioned optical problems in the touch panels 100e and 100f like the gap g, for example, the user can see the opening with naked eyes from the outside of the touch panels 100e and 100f The existence of 122c. Therefore, when the touch panels 100e and 100f reduce the capacitance of the first electrode pad 122 through the opening 122c, disposing the dummy pattern 180 in the opening 122c can simultaneously reduce the aforementioned optical problems.

Similarly, please refer to FIG. 11 , in the embodiment shown in FIG. 11 , there is a gap g between the first electrode pad 122 and the second electrode pad 132 of the touch panel 100 g, and the square dummy pattern 180 a is located in the gap g. In the embodiment of FIG. 11 , the first electrode pad 122 has an opening 122c, and the square-shaped pseudo-pattern 180a is also disposed in the opening 122c in addition to being disposed in the gap g, wherein the length of the pseudo-pattern 180a is between 25 The distance between the dummy pattern 180a and the adjacent first electrode pad 122 is between 10 microns and 40 microns. Therefore, disposing the dummy pattern 180 a in the opening 122 c can also achieve the above-mentioned function of disposing the dummy pattern 180 in the opening 122 c to reduce optical problems.

To sum up, the second electrode pads of the second electrode lines of the touch panel of the present invention are arranged alternately with the first electrode lines in the first axial direction, and the shapes of the first electrode pads and the second electrode pads are symmetrical. The two central parts are located between the two first bridging parts of two adjacent first electrode lines used to connect the first electrode pads in series, which can effectively utilize the layout space on the substrate, and can increase the number of adjacent first electrode pads and the second electrode pads. The mutual inductance capacitance between the two electrode pads and the strength of the mutual inductance of the touch panel in various directions make the touch panel have better sensing linearity in the operation of the touch signal. Accordingly, the touch panel has higher touch sensitivity.

Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (12)

1. A touch panel, comprising: Substrate; A plurality of first electrode lines are arranged parallel to each other on the substrate, wherein each of the first electrode lines extends along a first axial direction, and includes a plurality of first electrode pads and a plurality of first electrode pads connected in series. The first bridging portion, each of the first electrode pads includes: the first central portion is rectangular and has a first width perpendicular to the first axis; and Two first side portions connect opposite sides of the first central portion in the first axial direction, each of the first side portions is rectangular and has a second width perpendicular to the first axial direction, the first The width is greater than the second width, so that the first electrode pad is cross-shaped and has a plurality of sides, and each of the first bridges connects corresponding two first side portions of two adjacent first electrode pads; and A plurality of second electrode lines are arranged parallel to each other on the substrate, wherein each second electrode line extends along a second axial direction, and includes a plurality of second electrode pads and a plurality of second electrode pads connected in series. The second bridging portion, the second axis is perpendicular to the first axis, and the first electrode lines and the second electrode lines are electrically insulated from each other, and the second electrode pads of each of the second electrode lines Arranged alternately with the first electrode lines along the first axis, each of the second electrode pads includes: The second central part is rectangular, located between the corresponding two first bridging parts of two adjacent first electrode lines, and has a third width perpendicular to the first axis; and Two second side portions, connecting opposite sides of the second central portion on the first axis, each of the second side portions is rectangular and has a fourth width perpendicular to the first axis, the third The width is greater than the fourth width, so that the second electrode pad is cross-shaped and has a plurality of sides, and each of the second bridging portions overlaps with the corresponding first bridging portions, and each of the second bridging portions Two adjacent second central portions in the second axial direction are connected in series. 2. The touch panel as claimed in claim 1, wherein every two adjacent second electrode lines are connected to each other through the second side portions of the corresponding second electrode pads. 3. The touch panel as claimed in claim 1, wherein each of the first side parts is located between two second central parts of the adjacent second electrode lines, and each of the second side parts is between two adjacent second central parts. Between two first central parts of an electrode line. 4. The touch panel as claimed in claim 3, wherein the sum of the first width of the first central portion of each of the first electrode pads and the fourth width of the adjacent second side portion is between 1 mm to 3 mm, and a length of the second electrode pad in the first axial direction is between 1 mm to 3 mm. 5. The touch panel as claimed in claim 1, further comprising: A plurality of first wires arranged on a first side of the substrate, wherein every two adjacent first electrode wires pass through the corresponding first wires through the two first electrode pads close to the first side interconnected. 6. The touch panel as claimed in claim 5, further comprising: A plurality of second wires are arranged on a second side of the substrate opposite to the first side, wherein every two adjacent first electrode lines are connected to the two first electrode pads close to the second side They are connected to each other through the corresponding second wires. 7. The touch panel as claimed in claim 1, further comprising: A plurality of third wires arranged on a third side of the substrate, wherein every two adjacent second electrode wires pass through the corresponding third wires through the two second electrode pads close to the third side interconnected. 8. The touch panel as claimed in claim 7, further comprising: A plurality of fourth wires are arranged on a fourth side of the substrate opposite to the third side, wherein every two adjacent second electrode lines are connected to the two second electrode pads close to the fourth side They are connected to each other through the corresponding fourth wire. 9. The touch panel as claimed in claim 1, wherein there are a plurality of gaps between the first electrode pads and the second electrode pads. 10. The touch panel of claim 9, further comprising: A plurality of dummy patterns are arranged in the gaps. 11. The touch panel as claimed in claim 10, wherein each of the first electrode pads has at least one opening located at the first central portion of each of the first electrode pads. 12. The touch panel of claim 11, wherein the dummy patterns are disposed in the openings of the first electrode pads.