TWI537789B - Touch panel and decting method thereof - Google Patents

Description

Touch panel and detection method thereof

The present invention relates to touch technology, and in particular to a touch panel and a method for detecting the same.

In recent years, electronic devices with touch input functions, such as mobile phones, car navigation systems, portable computers, and computers, have been widely used, and these products are usually equipped with touch panels. At present, the touch principle commonly used can be divided into different technical principles such as resistance type, capacitance type, infrared induction type, electromagnetic induction type, and sound wave induction type.

For example, the capacitive touch panel may have a touch array composed of a plurality of axial electrodes, each of which has a plurality of electrodes spaced apart from each other, and each of the electrodes is led out by a peripheral lead and connected to the control. Device. As the size and sensitivity requirements of the touch panel increase, the number of electrodes increases accordingly, so the number of peripheral leads connected to the electrodes also increases, and the space occupied by the peripheral leads occupies the touch panel, which is disadvantageous to the narrow border of the touch panel. the design of.

The embodiment of the invention provides a touch panel, which reduces the number of peripheral leads, thereby reducing the occupied space of the peripheral leads, so as to facilitate the narrow frame design of the touch panel.

The embodiment of the present invention provides a touch panel including a substrate, a touch array, at least one first peripheral lead, and at least one second peripheral lead. The touch array, the first peripheral lead, and the second peripheral lead are all disposed on the substrate. on. The touch array has a plurality of first axial electrodes, wherein each of the first axial electrodes has a first end and a second end. The first peripheral lead is used to input input signals of different frequencies to the first axial electrode, wherein the first ends of the plurality of first axial electrodes respectively Electrically connected to the first peripheral lead through different coupling units. The second peripheral lead is electrically connected to the second ends of the plurality of first axial electrodes.

The embodiment of the present invention further provides a method for detecting a touch gesture, which is applicable to the touch panel. The detecting method includes: inputting a plurality of input signals having different frequencies to each of the coupling units; each of the coupling units selects an input. One of the input signals to the corresponding first axial electrode; detecting an output signal of the second peripheral lead, and determining a position of a touch point in a second axial direction according to an output signal of the second peripheral lead; Detecting the output signals of the second axial electrodes, and determining the position of the touch point in a first axial direction according to the output signals of the second axial electrodes.

The touch panel and the method for detecting the same, wherein the first ends of the at least two electrodes are electrically connected to the same first peripheral lead by different coupling units, and the second ends of the two electrodes The electrical connection to the at least one second peripheral lead reduces the number of peripheral leads compared to a conventional single strip electrode, so as to reduce the occupied space of the peripheral lead and facilitate the narrow bezel design of the touch panel.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

1, 1', 1", 2, 2', 2", 3, 4‧‧‧ touch panels

11‧‧‧Substrate

S1‧‧‧ upper surface

S2‧‧‧ lower surface

12‧‧‧Touch array

121‧‧‧First axial electrode

121a‧‧‧first end of the first axial electrode

121b‧‧‧second end of the first axial electrode

122‧‧‧second axial electrode

122a‧‧‧first end of the second axial electrode

122b‧‧‧second end of the second axial electrode

13, 13a, 13b‧‧‧ first perimeter leads

130‧‧‧Coupling unit

131‧‧‧First plate

132‧‧‧Second plate

Length of L1‧‧‧ first plate

Length of L2‧‧‧ second plate

G‧‧‧ spacing

W‧‧‧width of the spacing

133‧‧‧ dielectric layer

H‧‧‧Thickness of dielectric layer

14, 14a, 14b‧‧‧second peripheral lead

17‧‧‧ Third peripheral lead

S101~S104‧‧‧Steps

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

FIG. 1B is a partially enlarged schematic view showing a region A of the touch panel of the embodiment of FIG. 1A.

1C is a partial cross-sectional view of the touch panel taken along section line I-I of the embodiment of FIG. 1B.

2 is a schematic view showing the front structure of a touch panel according to another embodiment of the present invention.

FIG. 3 is a schematic front structural view of a touch panel according to another embodiment of the present invention.

4A is a schematic view showing the front structure of a touch panel according to another embodiment of the present invention.

FIG. 4B is a partially enlarged schematic view showing a B region of the touch panel of the embodiment of FIG. 4A.

4C is a partial cross-sectional view of the touch panel taken along section line II-II of the embodiment of FIG. 4B.

FIG. 5A is a schematic front structural view of a touch panel according to another embodiment of the present invention.

FIG. 5B is a partially enlarged schematic view showing a C area of the touch panel of the embodiment of FIG. 5A.

5C is a partial cross-sectional view of the touch panel taken along section line III-III of the embodiment of FIG. 5B.

6A is a schematic view showing the front structure of a touch panel according to another embodiment of the present invention.

FIG. 6B is a partially enlarged schematic view showing a D area of the touch panel of the embodiment of FIG. 6A.

6C is a partial cross-sectional view of the touch panel taken along section line IV-IV of the embodiment of FIG. 6B.

FIG. 7 is a schematic front structural view of a touch panel according to another embodiment of the present invention.

FIG. 8 is a schematic front structural view of a touch panel according to another embodiment of the present invention.

8B is a cross-sectional view of the touch panel taken along line V-V of the embodiment of FIG. 8A.

FIG. 9 is a flow chart showing the steps of a method for detecting a touch gesture according to an embodiment of the invention.

[Example of Touch Panel]

The following embodiments provide a touch panel 1 including a substrate 11 , a touch array 12 , at least one first peripheral lead 13 , and at least one second peripheral lead 14 . The touch array 12, the first peripheral lead 13 and the second peripheral lead 14 are all disposed on the substrate 11. The first peripheral lead 13 is configured to input input signals of different frequencies to the plurality of first axial electrodes 121 of the touch array 12 . Each of the first axial electrodes 121 has a first end 121a and a second end 121b. The first ends 121a of the first axial electrodes 121 are electrically connected to the first peripheral leads 13 through different coupling units 130. The second peripheral lead 14 is electrically connected to the second end 121b of the first axial electrodes 121.

In this embodiment, the first peripheral lead 13 and the second peripheral lead 14 are all illustrated by one piece, but the invention is not limited thereto. So all the first axial electrodes The first end 121a of the 121 is electrically connected to the same first peripheral lead 13 by a different coupling unit 130, and the second end 121b of all the first axial electrodes 121 is electrically connected to the same second peripheral lead 14. Compared with a conventional single electrode, a plurality of electrodes share a peripheral lead, which can reduce the number of peripheral leads, save the space occupied by the peripheral leads, and facilitate the narrow frame design of the touch panel.

Referring to FIG. 1A, FIG. 1B and FIG. 1C, FIG. 1A is a schematic front view of a touch panel according to an embodiment of the present invention, and FIG. 1B is a partially enlarged schematic view showing a region A of the touch panel of the embodiment of FIG. 1C is a partial cross-sectional view of the touch panel taken along section line II of the embodiment of FIG. 1B. The components of the touch panel 1 will be described in detail below with reference to the drawings.

The substrate 11 may have a flat upper surface S1 and a flat lower surface S2. In this embodiment, the substrate 11 is, for example, a cover glass or a carrier plate for touch contact. The material of the substrate 11 may be selected from the group consisting of glass, acrylic (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), and polyethylene naphthalate. Transparent insulating materials such as (PEN), polycarbonate (PC), polystyrene (PS) or other non-transparent insulating materials. In other embodiments, the substrate 11 can also be a flexible or flexible substrate. The type of the substrate 11 is generally known to those skilled in the art according to actual needs, and thus the embodiment of the present invention is not limited.

The touch panel 1 of the present embodiment is applied to a single-layer capacitive touch panel, for example, and the sensing electrode layer 12 is exemplified by a single-layer transparent conductive structure. In other embodiments, the sensing electrode layer 12 can also be used. Designed with a double-layer transparent conductive structure. The touch array 12 can include a plurality of first axial electrodes 121 and a plurality of second axial electrodes 122. The first axial electrodes 121 are interleaved with the plurality of second axial electrodes 122, and the first axial direction The electrode 121 and the second axial electrode 122 are electrically insulated from each other. The first axial electrodes 121 extend in the X direction, for example, and are spaced apart from each other and arranged in parallel in the Y direction. Each of the first axial electrodes 121 has a first end 121a and a second end 121b which are oppositely disposed. The second axial electrode 122 extends, for example, in the Y direction, and Each of the second axial electrodes 122 has a first end 122a and a second end 122b spaced apart from each other and arranged in parallel in the X direction.

As shown in FIG. 1A , the first axial electrode 121 and the second axial electrode 122 are disposed on the same side of the substrate 10 , and are disposed on the upper surface S1 of the substrate 10 , for example. In addition, the touch panel 1 may further include a plurality of insulating spacers (not shown) disposed on the second axial electrode 122, and the first axial electrode 121 spans the insulating spacer to make the first The axial electrode 121 and the second axial electrode 122 are electrically insulated from each other.

In this embodiment, the first axial electrode 121 and the second axial electrode 122 may be formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc (indium zinc). Oxide, IZO), aluminum zinc oxide (AZO) or nano silver.

The first peripheral lead 13 is configured to transmit a driving signal generated by a controller (not shown) outside the touch panel 1 to the first axial electrode 121. In detail, the first peripheral lead 13 is electrically connected to the first end 121 a of each of the first axial electrodes 121 through different coupling units 130 , and the coupling unit 130 selects an input signal corresponding to the corresponding frequency to the first axial directions. Electrode 121. For example, the input signals of different frequencies are input to the coupling units 130 by the first peripheral leads 13 at the same time, and each of the coupling units 130 only selects the corresponding frequency signal, and the seven first axial electrodes 121 of FIG. 1A are illustrated. From top to bottom, the first first axial electrode 121 only accepts an input signal of frequency f1, the second first axial electrode 121 only accepts an input signal of frequency f2, and so on, each first The axial electrode 121 accepts only one frequency of the input signal.

The second peripheral lead 14 is used as an output peripheral lead of the first axial electrode 121 to transmit the sensing signal generated by the first axial electrode 121 to a controller (not shown) outside the touch panel 1 . As shown in FIG. 1A, the second peripheral lead 14 is disposed on the upper surface S1 of the substrate 10. Since the input signals of the first axial electrodes 121 are respectively input signals of different frequencies, the frequency of the signals outputted from the second peripheral lead 14 is different, and the controller can judge according to the frequency and the signal size of the output signal. The position of the touch point in the second axial direction (Y direction) is broken.

In addition, in the embodiment, the touch panel 1 further includes a plurality of third peripheral leads 17 disposed on the upper surface S1 of the substrate 10. The third peripheral lead 17 is electrically connected to the second axial electrodes 122 and used as a peripheral lead of the output signal of the second axial electrode 122 to transmit the sensing signals generated by the touch array 12 to the touch panel. 1 external controller. In detail, the third peripheral leads 17 are electrically connected to the first ends 122a of the second axial electrodes 122, respectively.

As shown in FIG. 1A, the first peripheral lead 13 is located on the right side of the touch array 12, the second peripheral lead 14 is located on the left side of the touch array 12, and the third peripheral lead 17 is located under the touch array 12. Side. Further, these first axial electrodes 121 are located between the first peripheral lead 13 and the second peripheral lead 14.

It is to be noted that the first peripheral lead 13, the second peripheral lead 14, the third peripheral lead 17, and the touch array 12 are disposed on the same side of the substrate 10, for example, on the upper surface S1 of the substrate 10. In this embodiment, the first peripheral lead 13, the second peripheral lead 14, and the plurality of third peripheral leads 17 may be formed by covering a conductive material on at least a portion of the upper surface S1 of the substrate 11. The material contains, for example, silver, aluminum, copper, magnesium, molybdenum, or an alloy of the above materials.

The plurality of coupling units 130 of the first peripheral lead 13 are connected in parallel with each other, and each of the coupling units 130 is connected in series with one of the first axial electrodes 121, and the coupling signals generated by the respective coupling units 130 are different. In an embodiment, the coupling units 130 are capacitors having different capacitance values for selecting input signals of different frequencies to the corresponding first axial electrodes 121. Each of the coupling units 130 includes, for example, a first plate 131 and a second plate 132. In each of the coupling units 130, the first plate 131 and the second plate 132 are disposed opposite to each other and are isolated from each other.

As shown in the figure, in each of the coupling units 130, the first plate 131 and the second plate 132 have a substantially elongated shape, and both are formed by the same conductive layer. Therefore, in each of the coupling units 130, the direction of the electric field formed by both the first plate 131 and the second plate 132 is substantially parallel to the upper surface S1 of the substrate 11. In addition, in each of the coupling units 130, the first plate 131 and the second plate 132 are separated from each other by a pitch G, and the pitches G of the coupling units 130 are identical to each other, that is, the coupling units 130. The pitches G all have the same width W.

In addition, the lengths L1 of the first plates 131 are different from each other, and the lengths L2 of the second plates 132 are the same as each other. In other words, in each of the coupling units 130, the first plate 131 and the second plate 132 have a facing area, and the facing areas of the coupling units 130 are different from each other. Therefore, the capacitance values of these coupling units 130 are different from each other.

When the touch panel 1 is in operation, a plurality of input signals having the same intensity and different frequencies may be input to the first peripheral leads 13 and passed through the coupling units 130 to charge the coupling units 130. After the charging of all the coupling units 130 is completed, since the signal frequencies corresponding to the coupling units 130 having different capacitance values are different, the coupling units 130 respectively select input signals of corresponding frequencies to allow the input signals of the corresponding frequencies to pass. Thereby, the input signals of different frequencies are transmitted to the corresponding first axial electrodes 121 through the corresponding coupling unit 130. In addition, the signals of the different frequencies can be output from the second end 121 b of the corresponding first axial electrode 121 through the second peripheral lead 14 to be transmitted to the controller outside the touch panel 1 .

Thereby, the controller can lock the different first axial electrodes 121 by recognizing different signal frequencies. Moreover, the controller can scan all the signals output by the third peripheral lead 17 by locking the signals of the respective frequencies one by one (that is, the signals of the respective first axial electrodes 121 are locked one by one), thereby identifying the coordinate position of the touched points.

If a finger or a stylus touches the touch panel 1, the intensity of the signal carried on a specific frequency changes accordingly, and the intensity of the signal of other frequencies does not change, thereby determining the signal corresponding to the specific frequency. The first axial electrode 121 is touched. Therefore, the output signal of the second peripheral lead 14 is detected, and the first axial electrode 121 corresponding to the touched point can be determined, thereby determining the position of the touched point in the second axial direction (for example, the Y-axis).

Furthermore, the output signals of the third peripheral leads 17 are detected, and according to the output signals of the respective second axial electrodes, the second axial electrodes 122 corresponding to the touched points can be determined, thereby determining that the touched points are on the first axis. The position up (for example, the X axis).

The above embodiment can be summarized as a method for detecting a touch gesture according to an embodiment of the present invention. Referring to the flowchart of FIG. First, a plurality of input signals having different frequencies are input to the respective coupling units 130 (step S101). Then, each coupling unit 130 selectively inputs one of the input signals to the corresponding first axial electrode 121 (step S102). Next, the output signal of the second peripheral lead 14 is detected, and the position of the touch point in the second axial direction is determined according to the output signal of the second peripheral lead 14 (step S103). Furthermore, the output signal of the second axial electrode 122 is detected, and the position of the touch point in a first axial direction is determined according to the output signal of the second axial electrode 122 (step S104).

[Another embodiment of the touch panel]

Please refer to FIG. 2. FIG. 2 is a schematic front structural view of a touch panel according to another embodiment of the present invention. The touch panel 1' of the present embodiment is not described in the same manner as the touch panel 1 of the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below. As shown in FIG. 2, the lengths L1 of the first plates 131 of the different coupling units 130 are different from each other, and in each of the coupling units 130, the length L1 of the first plate 131 and the length L2 of the second plate 132 are different. The two are the same, and at the same time, the width W of the gap G between the first plate 131 and the second plate 132 in each coupling unit 130 is the same. Therefore, the capacitance values of these coupling units 130 are different from each other.

[Another embodiment of the touch panel]

Please refer to FIG. 3. FIG. 3 is a schematic front structural view of a touch panel according to another embodiment of the present invention. The touch panel 1 ′′ of the present embodiment is not described in the same manner as the foregoing embodiment, and only the differences between the present embodiment and the touch panel 1 of the foregoing embodiment are described in detail. As shown in FIG. 3 , different The lengths L1 of the first plates 131 of the coupling unit 130 are the same as each other, and in each of the coupling units 130, the length L1 of the first plate 131 and the length L2 of the second plate 132 are both the same. The distance G between the coupling units 130 is different from each other, that is, the distance G between the coupling units 130 has a different width W. Therefore, the capacitance values of these coupling units 130 are different from each other.

[Another embodiment of the touch panel]

4A, FIG. 4B and FIG. 4C, FIG. 4A is a front view showing the structure of a touch panel according to another embodiment of the present invention, and FIG. 4B is a partially enlarged view showing a B region of the touch panel of the embodiment of FIG. 4C is a partial cross-sectional view of the touch panel taken along section line II-II of the embodiment of FIG. 4B. The touch panel 2 of the present embodiment is not described in the same manner as the touch panel 1 of the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below.

As shown in the figure, in each of the coupling units 130, the first plate 131 and the second plate 132 are formed, for example, by different conductive layers, and the first plate 131 is disposed above the second plate 132. Therefore, in each of the coupling units 130, the direction of the electric field formed by both the first plate 131 and the second plate 132 is substantially the same as the normal direction of the upper surface S1 of the substrate 11. In each of the coupling units 130, the first plate 131 and the second plate 132 are separated from each other by a dielectric layer 133, and the thicknesses H of the dielectric layers 133 of the respective coupling units 130 are identical to each other. For example, the dielectric layer 133 is designed as a whole layer, the first plate 131 is disposed on one side of the dielectric layer 133, and the second plate 132 is disposed on the other side of the dielectric layer 133.

In addition, the lengths L1 of the first plates 131 are different from each other, and the lengths L2 of the second plates 132 are identical to each other. In other words, the dimensions of the facing areas of the coupling units 130 are different from each other. Therefore, the capacitance values of the respective coupling units 130 are different from each other.

[Another embodiment of the touch panel]

Referring to FIG. 5A, FIG. 5B and FIG. 5C, FIG. 5A is a schematic front view of a touch panel according to another embodiment of the present invention, and FIG. 5B is a partial enlarged view of a C area of the touch panel of the embodiment of FIG. 5C is a partial cross-sectional view of the touch panel taken along section line III-III of the embodiment of FIG. 5B. Touch of this embodiment The difference between the panel 2' and the touch panel 2 of the foregoing embodiment will not be described, and only the differences between the embodiment and the foregoing embodiment will be described in detail below.

As shown, the lengths L1 of the first plates 131 are different from each other, and in each of the coupling units 130, the length L1 of the first plate 131 and the length L2 of the second plate 132 are the same. In other words, the dimensions of the facing areas of the coupling units 130 are different from each other. Therefore, the capacitances of the respective coupling units 130 are different from each other.

[Another embodiment of the touch panel]

Referring to FIG. 6A, FIG. 6B and FIG. 6C, FIG. 6A is a front structural view of a touch panel according to another embodiment of the present invention, and FIG. 6B is a partially enlarged schematic view showing a D area of the touch panel of the embodiment of FIG. 6A. 6C is a partial cross-sectional view of the touch panel taken along line IV-IV of the embodiment of FIG. 6B. The touch panel 2" of the present embodiment is not described in the same manner as the touch panel 2 of the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below.

In each of the coupling units 130, the second plate 132 is disposed above the first plate 131, and the first plate 131 and the second plate 132 are separated from each other by a dielectric layer 133. The lengths L1 of the first plates 131 are the same as each other, and in each of the coupling units 130, the length L1 of the first plate 131 and the length L2 of the second plate 132 are the same. In other words, the dimensions of the facing areas of the coupling units 130 are identical to each other. In addition, the thicknesses H of the dielectric layers 133 of the respective coupling units 130 are different from each other. In other words, each of the coupling units 130 has a spacing distance H between the first plate 131 and the second plate 132, and the spacing distances H of the coupling units 130 are different from each other. Therefore, the capacitances of the respective coupling units 130 are different from each other.

[Another embodiment of the touch panel]

Please refer to FIG. 7. FIG. 7 is a schematic front structural view of a touch panel according to another embodiment of the present invention. The touch panel 3 of the present embodiment is not described in the same manner as the touch panel 1 of the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below. As shown in FIG. 7, in the touch panel 3, the first peripheral lead 13 The number can be multiple, for example two. The number of the second peripheral leads 14 may also be plural, for example, two.

The first end 121a of the at least two first axial electrodes 121 is electrically connected to the first peripheral lead 13 of the same strip, and the second end 121b of the at least two first axial electrodes 121 is electrically connected to the same strip. Two peripheral leads 14. As shown in FIG. 7, the first ends 121a of the four first axial electrodes 121 are connected to the same first peripheral lead 13a through different coupling units 130, and the second ends 121b of the four first axial electrodes 121 are connected to The same second peripheral lead 14a. The first ends 121a of the other three first axial electrodes 121 are connected to the other first peripheral lead 13b by the coupling unit 130, and the second ends 121b of the three first axial electrodes 121 are connected to the other second peripheral lead 14b. . It should be noted that, in this embodiment, the capacitance values of the coupling units 130 respectively connected to the first peripheral leads 13a, 13b may be the same or different.

[Another embodiment of the touch panel]

Referring to FIG. 8A and FIG. 8B, FIG. 8A is a schematic front view of a touch panel according to another embodiment of the present invention, and FIG. 8B is a cross-sectional view of the touch panel taken along line V-V of the embodiment of FIG. 8A. The touch panel 4 of the present embodiment is not described in the same manner as the touch panel 1 of the foregoing embodiment, and only the differences between the embodiment and the foregoing embodiment will be described in detail below.

In the touch panel 4, the first axial electrode 121 is disposed on the upper surface S1 of the substrate 11, and the second axial electrode 122 is disposed on the lower surface S2 of the substrate 11, the first axial electrode 121 and the second axis. The electrodes 122 are electrically insulated from each other through the substrate 11.

In addition, in the same coupling unit 130, the first plate 131 and the second plate 132 are respectively located on both sides of the substrate 11 and are separated from each other by the substrate 11. In detail, the plurality of first plates 131 of the first peripheral lead 13 may be disposed on the upper surface S1 of the substrate 11, and the plurality of second plates 132 of the first peripheral lead 13 may be disposed on the lower surface S2 of the substrate 11. They are separated by the substrate 11 and electrically insulated from each other.

In summary, the touch panel of the above embodiments is configured to electrically connect the first ends of the at least two electrodes to the first perimeter of the same strip by different coupling units. The second end of the two electrodes is electrically connected to the second peripheral lead 14 of the same strip. Compared with a conventional single strip electrode, a plurality of peripheral electrodes are shared by the plurality of electrodes. In turn, the number of peripheral leads can be reduced to save space occupied by the peripheral leads, which is beneficial to the narrow frame design of the touch panel.

The above is only an embodiment of the present invention, and is not intended to limit the scope of the invention. It is still within the scope of patent protection of the present invention to make any substitutions and modifications of the modifications made by those skilled in the art without departing from the spirit and scope of the invention.

1‧‧‧ touch panel

11‧‧‧Substrate

S1‧‧‧ upper surface

12‧‧‧Touch array

121‧‧‧First axial electrode

121a‧‧‧first end of the first axial electrode

121b‧‧‧second end of the first axial electrode

122‧‧‧second axial electrode

122a‧‧‧first end of the second axial electrode

122b‧‧‧second end of the second axial electrode

13‧‧‧First perimeter lead

130‧‧‧Coupling unit

131‧‧‧First plate

132‧‧‧Second plate

Length of L1‧‧‧ first plate

Length of L2‧‧‧ second plate

G‧‧‧ spacing

W‧‧‧width of the spacing

14‧‧‧Second peripheral lead

17‧‧‧ Third peripheral lead

Claims (17)

A touch panel includes: a substrate; a touch array having a plurality of first axial electrodes disposed on the substrate, wherein each of the first axial electrodes has a first end and a second end And a first peripheral lead disposed on the substrate and configured to input input signals of different frequencies to the first axial electrodes, wherein the first ends of the first axial electrodes respectively transmit different The coupling unit is electrically connected to the first peripheral lead; and a second peripheral lead is disposed on the substrate and electrically connected to the second ends of the first axial electrodes; wherein the coupling units are Capacitors with different capacitance values. The touch panel of claim 1, wherein the number of the first peripheral leads is plural, and the first ends of the at least two first axial electrodes are electrically connected to the same first peripheral lead . The touch panel of claim 1 or 2, wherein the number of the second peripheral leads is plural, and the second ends of the at least two first axial electrodes are electrically connected to the second of the same strip Peripheral leads. The touch panel of claim 1, wherein the coupling units are connected in parallel with each other, and each of the coupling units is connected in series with one of the first axial electrodes. The touch panel of claim 1, wherein the coupling units are configured to select input signals of different frequencies to the corresponding first axial electrodes. The touch panel of claim 5, wherein each of the coupling units comprises a first plate and a second plate, and in each of the coupling units, the first plate and the second plate face each other Set and isolated from each other. The touch panel of claim 6, wherein in each of the coupling units, the first plate and the second plate are separated from each other by a distance. The touch panel of claim 7, wherein the spacing between the different coupling units is This is not the same. The touch panel of claim 6, wherein in each of the coupling units, the first plate and the second plate are separated from each other by a dielectric layer. The touch panel of claim 9, wherein the thicknesses of the dielectric layers in different coupling units are different from each other. The touch panel of claim 6, wherein in each of the coupling units, the first plate and the second plate have a facing area, and the dimensions of the opposing regions of different coupling units are mutually Not the same. The touch panel of claim 6, wherein in each of the coupling units, the first plate and the second plate are respectively located on opposite sides of the substrate and are isolated from each other through the substrate. The touch panel of claim 1, wherein the touch array further includes a plurality of second axial electrodes, the first axial electrodes and the second axial electrodes are staggered, and the first The axial electrodes and the second axial electrodes are electrically insulated from each other. The touch panel of claim 13 further includes a plurality of third peripheral leads disposed on the substrate, and the third peripheral leads are electrically connected to the second axial electrodes. The touch panel of claim 13, wherein the first axial electrodes and the second axial electrodes are disposed on the same side of the substrate. The touch panel of claim 13, wherein the first axial electrodes and the second axial electrodes are respectively disposed on opposite sides of the substrate. The method for detecting a touch gesture is applicable to the touch panel of claim 13, wherein the detecting method comprises: inputting a plurality of input signals having different frequencies to each of the coupling units; each of the coupling units selectively inputting the One of the input signals to the corresponding first axial electrode; detecting an output signal of the second peripheral lead, and determining a position of a touch point in a second axial direction according to an output signal of the second peripheral lead; Detecting the output signals of the second axial electrodes, and determining the position of the touch point in a first axial direction according to the output signals of the second axial electrodes.