TWI483168B - Touch panel - Google Patents

Description

Touch panel

The present invention relates to a panel, and more particularly to a touch panel.

In recent years, with the rapid development and application of digital information and wireless mobile communication technologies, many electronic information products, such as mobile phones, handheld computers, or smart phones, The input method has been changed from a conventional keyboard or mouse device to a touch panel (Touch Panel) as an input device to improve the convenience of operation.

The touch panel can be roughly classified into a resistive type, a capacitive type, an optical type, an acoustic wave type, and an electromagnetic type according to the sensing method. The capacitive touch panel has the advantages of fast response time, good reliability, and high durability. It is widely used in electronic products. The capacitive touch panel forms a single layer or a plurality of transparent electrode patterns on the substrate to form a touch sensor layer. Accordingly, the user can perform sensing to operate the touch panel by using a touch tool, such as a stylus, or by directly touching the surface of the touch panel with a finger. Therefore, the technology for improving the touch sensitivity of the touch panel has gradually become a focus of attention.

The invention provides a touch panel with high touch sensitivity.

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 of the first electrode lines extends along a first axial direction, and includes a plurality of first electrode pads and a plurality of first bridge portions connected in series with the first electrode pads. Each of the first electrode pads includes a first central portion and two first side portions. The first central portion is rectangular and has a first width that is perpendicular to the first axial direction. The two first side portions are coupled to 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 width being greater than the second width. Each of the first bridges connects the respective two first side portions of the adjacent two first electrode pads. The second electrode lines are arranged parallel to each other on the substrate, wherein each of the second electrode lines extends along a second axial direction, and includes a plurality of second electrode pads and a plurality of second bridge portions connected in series with the second electrode pads. 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 the respective second electrode lines are alternately arranged with the first electrode lines in the first axial direction. Each of the second electrode pads includes a second central portion and two second side portions. The second central portion is rectangular and located between the respective first bridge portions of the adjacent two first electrode lines and has a third width perpendicular to the first axial direction. The two second side portions are coupled to opposite sides of the second central portion in the first axial direction. Each of the second side portions is rectangular and has a fourth width perpendicular to the first axial direction, and the third width is greater than the fourth width. Each of the second bridge portions respectively overlaps the corresponding first bridge portion, and each of the second bridge portions is connected in series with the adjacent two second central portions in the second axial direction.

Based on the above, the second electrode pad of the second electrode line of the touch panel of the present invention is alternately disposed in the first axial direction and the first electrode line, and the shape of the first electrode pad and the second electrode pad are symmetric, and the substrate can be effectively utilized. The layout space can increase the mutual capacitance between the adjacent first electrode pad and the second electrode pad. Accordingly, the touch panel has high touch sensitivity.

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

100100a, 100b, 100c, 100e, 100f, 100g‧‧‧ touch panels

110‧‧‧Substrate

120‧‧‧First electrode line

122‧‧‧First electrode pad

122a‧‧ First Central Department

122b‧‧‧ first side

122c‧‧‧ openings

124‧‧‧First Bridge

130‧‧‧Second electrode line

132‧‧‧Second electrode pad

132a‧‧‧Second Central Department

132b‧‧‧ second side

134‧‧‧Second Bridge

140‧‧‧First wire

150‧‧‧second wire

160‧‧‧ Third wire

170‧‧‧fourth wire

180, 180a‧‧‧ pseudo pattern

D1‧‧‧first axial direction

D2‧‧‧second axial

G‧‧‧ gap

L1, L2‧‧‧ side

N‧‧‧ node

R‧‧‧ signal unit 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

FIG. 1 is a schematic diagram of a touch panel according to an embodiment of the invention.

FIG. 2 is a partially enlarged schematic view of the first electrode line of FIG. 1. FIG.

3 is a partially enlarged schematic view of the second electrode line of 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 view of the touch panel of FIG. 1. FIG.

6 to 11 are partially enlarged schematic views of a touch panel according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a touch panel according to an embodiment of the invention. Referring to FIG. 1 , in the 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 in parallel with each other on the base On the board 110, and each of the first electrode lines 120 extends along the first axial direction D1. The second electrode lines 130 are arranged parallel to each other on the substrate 110, and each of the second electrode lines 130 extends along the second axial direction D2, wherein the second axial direction D2 is perpendicular to the first axial direction D1, and the first electrode lines 120 and The two electrode lines 130 are electrically insulated from each other. The substrate 110 is, for example, a glass, a plastic, or a substrate of another material, and the first electrode line 120 and the second electrode line 130 are, for example, Indium Tin Oxide (ITO), metal mesh (metal). Mesh), silver nano wire, carbon nano tube (CNT), polymer conductive layer or other electrode wire, and can be used in photolithography process, A screen printing process or other processes are formed on the substrate 110. The present invention does not limit the types and fabrication 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 of FIG. 1. FIG. Referring to FIG. 1 and FIG. 2, in the embodiment, each of the first electrode lines 120 extends along the first axial direction D1, wherein each of the first electrode lines 120 includes a plurality of first electrode pads 122 and a series of first electrode pads. A plurality of first bridging portions 124 of 122, and the first bridging portions 124 are respectively connected in series with the adjacent two first electrode pads 122 along the first axial direction D1. Each of the first electrode pads 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 that is perpendicular to the first axial direction D1. The two first side portions 122b are connected to opposite sides of the first central portion 122a on the first axial direction D1. Each of the first side portions 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 first electrode pad 122 has a shape similar to a "crisscross" and has a plurality of sides, and the first central portion 122a of each of the first electrode pads 122 and one of the first side portions 122b And the first central portion 122a of the adjacent first electrode pad 122 and the corresponding first side portion 122b may be similar to the "H" shape along the first axial direction D1. Therefore, the two first side portions 122b are substantially 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 axial direction D1 and the second axial direction D2, and The number of sides thereof is increased via the first side portion 122b. At this time, the first bridge portion 124 connected in series with the adjacent two first electrode pads 122 is actually connected to the corresponding two first side portions 122b of the adjacent two first electrode pads 122 in the first axial direction D1, so that the first The electrode wire 120 extends along the first axial direction D1.

3 is a partially enlarged schematic view of the second electrode line of FIG. 1. Referring to FIG. 1 and FIG. 3, in the embodiment, the second electrode line 130 extends along a second axial direction D2 perpendicular to the first axial direction D1, wherein each of the second electrode lines 130 includes a plurality of second electrode pads 132. And a plurality of second bridging portions 134 connected in series with the second electrode pads 132, and the second bridging portions 134 are respectively connected in series with the adjacent two second electrode pads 132 along the second axial direction D2. Each of the second electrode pads 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 that is perpendicular to the first axial direction D1. The two second side portions 132b are connected to opposite sides of the second central portion 132a on the first axial direction D1. Each of the second side portions 132b is rectangular and has a fourth width w4 perpendicular to the first axial direction D1, and the third width w3 is greater 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 that of the "cross type". (crisscross) has a plurality of sides, and each of the second electrode pads 132 along the second axial direction D2 and the adjacent other second electrode pad 132 along the other half of the second axial direction D2 The second axial direction D2 is similar to the "I" type, and the "I" type can be regarded as the result of the "H" rotation of 90 degrees. Therefore, the two second side portions 132b are substantially symmetrically connected to opposite sides of the second central portion 132a, and the second electrode pad 132 has a symmetrical shape in the first axial direction D1 and the second axial direction 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 axial direction D1 and the second axial direction D2. At this time, the second bridge portion 134 of the adjacent two second electrode pads 132 is actually connected in series with the corresponding two second central portions 132a of the adjacent two second electrode pads 132 in the second axial direction D2, so that the first The two electrode lines 130 extend along the second axial direction D2.

Referring to FIG. 1 to FIG. 3 simultaneously, in the embodiment, the first electrode line 120 and the second electrode line 130 are simultaneously disposed on the same surface of the substrate 110, wherein the first electrode pad 122 of the first electrode line 120 and the second electrode pad 122 The second electrode pads 132 of the electrode lines 130 are substantially coplanar, and the first electrode pads 122 and the second electrode pads 132 do not overlap. The second electrode pads 132 of the second electrode lines 130 are alternately arranged with the first electrode lines 120 in the first axial direction D1 such that the first electrode lines 120 extending along the first axial direction D1 and the second axial direction D2 The extended second electrode lines 130 vertically intersect each other. Each of the second bridges 134 is overlapped with the corresponding first bridge portion 124. The first bridge portion 124 is disposed directly on the substrate 110, and the second bridge portion 134 is disposed on the substrate 110 across the first bridge portion 124. However, the present invention is not limited to the above-described configuration. First bridge There is a dielectric layer (not shown) between the 124 and the second bridging portion 134 or other member that can electrically insulate the second bridging portion 134 of the first bridging portion 124 to make the first electrode line 120 and the second electrode The wires 130 are electrically insulated from each other.

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

It can be seen that the first electrode pad 122 and the second electrode pad 132 are alternately arranged with each other via the first side portion 122b and the second side portion 132b, so that the side edges of the first electrode pad 122 and the second electrode pad 132 can correspond to each other. For example, in the embodiment, the adjacent first electrode pads 122 and the 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. 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 a symmetrical shape and have similar dimensions in the first axial direction D1 and the second axial direction D2, The mutual inductance capacitance of the touch panel 100 in various directions can be increased, so that the touch panel 100 It has better sensing linearity in the operation of touch signals.

On the other hand, referring to FIG. 1 to FIG. 3, in the present 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 each serve as one of the signal lines that transmit signals along the first axis D1, such as one of a scan line or a data line. In addition, each of the two adjacent second electrode lines 130 are connected to each other by the second side portion 132b of the corresponding second electrode pad 132. Therefore, each of the two adjacent second electrode lines 130 is electrically connected to each other in the first axial direction D1 by the second side portion 132b of the corresponding second electrode pad 132, so that each of the two connected seconds The electrode line 130 can simultaneously serve as one signal line for transmitting a signal along the second axis D2, such as a scan line or a data line. In other embodiments, each of the second electrode lines 130 may not be in contact with each other, such that each of the second electrode lines 130 may each serve as a signal line for transmitting signals along the second axis D2, and the present invention does not limit every two phases. The adjacent second electrode lines 130 must be connected to each other.

Referring to FIG. 1 , in the embodiment, the touch panel 100 can be divided into a plurality of signal unit regions R. The shape of each of the signal cell regions R is rectangular, and the array is arranged on the substrate 110. Each signal unit area R has two signal lines that transmit signals along the first axis D1 and a signal line that transmits signals along the second axis D2, and each signal unit area R has four nodes N (node). The two signal lines that transmit signals along the first axis D1 are the two first electrode lines 120, and one signal line that transmits signals along the second axis D2 is the two second electrode lines 130 that are mutually conductive. The node is the intersection of the first bridge 124 and the second bridge 134. At this time, since the mutual inductance capacitance of the first electrode pad 122 and the second electrode pad 132 is increased, The intensity of the mutual inductance of the first electrode line 120 and the second electrode line 130 passing through each of the signal unit regions R is enhanced. Accordingly, the touch panel 100 has high touch sensitivity, and is suitable for use in an electronic device having a small contact area of the operating tool (for example, a finger or a stylus), and can also utilize the touch of the touch panel 100. The sensitivity is improved to support the touch state of other non-conductive material shields (such as gloves).

In this embodiment, the length of each side edge L1 and L2 of each rectangular signal unit region R is between 2 millimeters and 6 millimeters, wherein the length of the side edge L1 is approximately two first electrodes. The first width w1 of the first central portion 122a of the pad 122 is the sum of the lengths of the fourth width w4 of the second side portions 132b of the two adjacent second electrode pads 132, and the length of the side edge L2 is approximately two The length of the two electrode pads 132 in the first axial direction D1. Therefore, it can be known that the sum of the first width w1 of the first central portion 122a of each of the first electrode pads 122 and the fourth width w4 of the adjacent second side portions 132b along the first axial direction D1 is between 1 mm and 3 mm. Meanwhile, 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, and does not limit the ratio of the third width w3 to the fourth width w4, nor does it 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 dimensions of the first width w1, the second width w2, the third width w3, and the fourth width w4 may be adjusted according to requirements.

With reference to FIG. 1 , in the embodiment, the touch panel 100 further includes a plurality of first wires 140 and a plurality of third wires 160 . The first wire 140 is disposed on the first side S1 of the substrate 110, wherein each of the two adjacent first electrode lines 120 is adjacent to the first side electrode S1 of the first side S1 by the corresponding first wire 140 Connected to each other Pick up. The third wire 160 is disposed on the third side S3 of the substrate 110, wherein each of the two second electrode lines 130 adjacent to the third side of the third side S3 is connected by the corresponding third wire 160. Connected to each other, and the third side S3 is adjacent to the first side S1. Accordingly, the first electrode line 120 for transmitting a signal along the first axis D1 and the second electrode line 130 for transmitting a signal along the second axis D2 can transmit signals to the first wire 140 and the third wire, respectively. 160.

4 is a schematic diagram of a touch panel according to another embodiment of the present invention. Referring to FIG. 4 , in the embodiment, in addition to the first wire 140 and the third wire 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 relative to the first side S1, wherein each of the two adjacent first electrode lines 120 is borrowed by the two first electrode pads 122 adjacent to the second side S2. They are connected to each other by corresponding second wires 150. The fourth wire 170 is disposed on the fourth side S4 of the substrate 110 relative to the third side S3, wherein each of the two adjacent second electrode lines 130 is borrowed by the two second electrode pads 132 adjacent to the fourth side S4. The second side wires S2 are connected to each other by the corresponding fourth wires 170, and the second side edges S2 are adjacent to the fourth side edges S4. Therefore, each of the two adjacent first electrode lines 120 in the touch panel 100a is connected in parallel with each other, and each adjacent two second electrode lines 130 are connected in parallel with each other such that the impedances of the first electrode line 120 and the second electrode line 130 are opposite to each other. Become smaller. In addition, the first wire 140 and the second wire 150 are respectively disposed at two ends of the first electrode line 120, and the third wire 160 and the fourth wire 170 are respectively disposed at two ends of the second electrode line 130, so that the touch panel can be made The sensing pattern of 100a is relatively symmetrical, and the sensing of the touch panel 100a at the four sides S1 to S4 tends to be uniform.

FIG. 5 is a partially enlarged schematic view of the touch panel of FIG. 1. FIG. Referring to FIG. 5 , in the embodiment, a plurality of gaps g are formed between the first electrode pad 122 and the second electrode pad 132 . The width of the gap g is, for example, between 10 micrometers and 500 micrometers, but the invention is not limited thereto. When the adjacent first electrode pad 122 and the second electrode pad 132 are too close to each other, the touch sensitivity between the first electrode pad 122 and the second electrode pad 132 is too high, and the touch panel 100 is subjected to external interference ( For example, it is also a mistake. Therefore, the distance between the first electrode pad 122 and the second electrode pad 132 is such 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. It also does not reduce the touch sensitivity too much and affects the use of the touch panel 100.

6 to 11 are partially enlarged schematic views of a touch panel according to another embodiment of the present invention. Referring to FIG. 6 , in the embodiment of FIG. 6 , the touch panel 100b further includes a plurality of pseudo patterns 180 disposed in the gap g. The pseudo pattern 180 of the embodiment of FIG. 6 is elongated, so that each of the gaps g is correspondingly configured with a pseudo pattern 180, wherein the pseudo pattern 180 has a length between 25 micrometers and 450 micrometers, and the pseudo pattern 180 and phase The spacing between the adjacent first electrode pads 122 and the spacing between the pseudo-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, the touch panel 100b may cause optical problems. For example, the user can visually see the presence of the gap g from the outside of the touch panel 100b. Therefore, when the touch panel 100b is provided with a gap g to reduce the mutual capacitance of the first electrode pad 122 and the second electrode pad 132, thereby reducing the external interference of the touch panel 100b, the pseudo pattern 180 is disposed in the gap. g, It is possible to simultaneously reduce the above optical problems.

Similarly, referring to FIG. 7, in the embodiment of FIG. 7, the touch panel 100c includes a plurality of pseudo patterns 180a disposed in the gap g. The pseudo pattern 180a of the embodiment of FIG. 7 is a square type, so that a plurality of pseudo patterns 180a are disposed correspondingly in each gap g, wherein the pseudo pattern 180a has a length between 25 micrometers and 450 micrometers, and the pseudo pattern 180a and the phase The spacing between the adjacent first electrode pads 122 and the spacing between the pseudo-pattern 180a and the adjacent second electrode pads 132 are between 10 microns and 40 microns. Therefore, the pseudo pattern 180a can also achieve the function of the pseudo pattern 180 described above.

Referring to FIG. 8 , in the embodiment, each of the first electrode pads 122 of the touch panel 100 d has an opening 122 e. The opening 122e is located at the first central portion 122a of each of the first electrode pads 122. The first electrode pad 122 has an opening 122c for reducing the area of the first electrode pad 122, thereby reducing the capacitance value of the first electrode pad 122. Further, the opening 122c is disposed on the first central portion 122a such that the edge of the first electrode pad 122 is maintained by the opening 122c to maintain the mutual inductance with the adjacent second electrode pad 132. In addition, the first electrode pad 122 of the embodiment is exemplified by having one opening 122c. However, the present invention does not limit the number of the openings 122c of the first electrode pad 122. The first electrode pad of other embodiments may have a requirement according to requirements. Two or more openings 122c.

Referring to FIG. 9 to FIG. 10 , in the embodiment of FIG. 9 and FIG. 10 , a gap g between the first electrode pad 122 and the second electrode pad 132 of the touch panels 100 e and 100 f and a long strip-shaped pseudo pattern are provided. 180 bits are in the 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, and the first electrode pad 122 of the touch panel 100f has two openings 122c. in In the embodiment of FIG. 9 and FIG. 10, the elongated pattern quasi-pattern 180 is disposed in the opening 122c in addition to being disposed in the gap g, wherein the pseudo pattern 180 has a length between 25 micrometers and 450 micrometers, and The spacing 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 the opening 122c, the opening 122c may cause the optical problems described above for the touch panels 100e and 100f as the gap g. For example, the user can see the opening from the outside of the touch panels 100e and 100f. The existence of 122c. Therefore, when the touch panels 100e and 100f lower the capacitance value of the first electrode pad 122 by the opening 122c, disposing the pseudo pattern 180 in the opening 122c can simultaneously reduce the above optical problem.

Similarly, referring to FIG. 11, in the embodiment of FIG. 11, the first electrode pad 122 of the touch panel 100g and the second electrode pad 132 have a gap g therebetween, and the square-shaped pseudo pattern 180a 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 disposed in the opening 122c in addition to the gap g, wherein the pseudo pattern 180a has a length of 25 The micron to 450 micron and the spacing between the pseudo-pattern 180a and the adjacent first electrode pad 122 is between 10 microns and 40 microns. Therefore, by disposing the pseudo pattern 180a in the opening 122c, the above-described pseudo pattern 180 can be disposed in the opening 122c to reduce the optical problem.

In summary, the second electrode pad of the second electrode line of the touch panel of the present invention is alternately disposed in the first axial direction and the first electrode line, and the first electrode pad is symmetric with the shape of the second electrode pad, wherein the second electrode pad is symmetric. The central portion is located between two first bridge portions of the adjacent first electrode lines for serially connecting the first electrode pads, so that the layout space on the substrate can be effectively utilized. And can increase the mutual mutual capacitance between the adjacent first electrode pad and the second electrode pad and the mutual inductance of the touch panel in various directions, so that the touch panel has a better calculation in the touch signal Good sense linearity. Accordingly, the touch panel has high touch sensitivity.

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‧‧‧First electrode line

122‧‧‧First electrode pad

122a‧‧ First Central Department

122b‧‧‧ first side

124‧‧‧First Bridge

130‧‧‧Second electrode line

132‧‧‧Second electrode pad

132a‧‧‧Second Central Department

132b‧‧‧ second side

134‧‧‧Second Bridge

140‧‧‧First wire

160‧‧‧ Third wire

D1‧‧‧first axial direction

D2‧‧‧second axial

L1, L2‧‧‧ side

N‧‧‧ node

R‧‧‧ signal unit area

S1‧‧‧ first side

S3‧‧‧ third side

W1‧‧‧first width

W2‧‧‧second width

W3‧‧‧ third width

W4‧‧‧fourth width

Claims (10)

A touch panel includes: a substrate; a plurality of first electrode lines 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 strings Connecting a plurality of first bridge portions of the first electrode pads, each of the first electrode pads includes: a first central portion having a rectangular shape and having a first width perpendicular to the first axial direction; and two first a side portion connecting opposite sides of the first central portion in the first axial direction, each of the first side portions being rectangular and having a second width perpendicular to the first axial direction, the first width being greater than the first portion Two widths, each of the first bridge portions connecting the corresponding two first side portions of the adjacent two first electrode pads; and a plurality of second electrode lines arranged parallel to each other on the substrate, wherein each of the second electrode lines is along a a second axial extension and comprising a plurality of second electrode pads and a plurality of second bridges connected in series with the second electrode pads, the second axis is perpendicular to the first axis, and the first electrodes The line and the second electrode lines are electrically insulated from each other, and the second electrode line The second electrode pad is alternately disposed with the first electrode lines in the first axial direction, and each of the second electrode pads includes: a second central portion, which is rectangular, and is located at a corresponding two of the adjacent two first electrode lines. Between the bridge portions, and having a third width perpendicular to the first axial direction; and two second side portions connecting the relative portions of the second central portion in the first axial direction Each of the two sides is rectangular, and has a fourth width perpendicular to the first axial direction, the third width is greater than the fourth width, and each of the second bridges and the corresponding first The bridge portions overlap, and each of the second bridge portions is connected in series with the adjacent two second central portions in the second axial direction, wherein each of the first side portions is located at two second central portions of the adjacent second electrode lines And each of the second side portions is between the two first central portions of the adjacent two first electrode lines, and each of the two adjacent second electrode lines is respectively separated by the corresponding second electrode pads The second side portions are connected to each other. The touch panel of claim 1, wherein a 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 portions is between Between 1 mm and 3 mm, and a length of the second electrode pad in the first axial direction is between 1 mm and 3 mm. The touch panel of claim 1, further comprising: a plurality of first wires disposed on a first side of the substrate, wherein each of the two adjacent first electrode lines is adjacent to the first The two first electrode pads on one side are connected to each other by the corresponding first wires. The touch panel of claim 3, further comprising: a plurality of second wires disposed on a second side of the substrate relative to the first side, wherein each of the two adjacent An electrode line is connected to each other by the corresponding second wire by the two first electrode pads adjacent to the second side. The touch panel of claim 1, further comprising: a plurality of third wires disposed on a third side of the substrate, wherein adjacent ones Each of the two second electrode lines is connected to each other by the corresponding third wire by the two second electrode pads adjacent to the third side. The touch panel of claim 5, further comprising: a plurality of fourth wires disposed on a fourth side of the substrate relative to the third side, wherein each of the two adjacent The two electrode lines are connected to each other by the corresponding fourth wires by the two second electrode pads adjacent to the fourth side. The touch panel of claim 1, wherein the first electrode pads and the second electrode pads have a plurality of gaps therebetween. The touch panel of claim 7, further comprising: a plurality of pseudo patterns arranged in the gaps. The touch panel of claim 8, 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. The touch panel of claim 9, wherein the pseudo patterns are disposed in the openings of the first electrode pads.