CN101464767A - touch panel - Google Patents

Abstract

The invention provides a touch panel. The touch panel comprises a resistance panel module and a detection module. The resistance panel module is provided with a first conduction path and a second conduction path. When a multi-point touch event occurs, the first conduction path and the second conduction path are conducted at multiple points. The detection module is coupled to the resistive panel module and configured to detect a resistance change between the first end and the second end of the first conduction path to evaluate a touch condition of the multi-point touch event. Therefore, the resistance value change condition can be used as an input signal of a human-computer interface to control the electronic device.

Description

touch panel

technical field

The present invention relates to a resistive touch panel, and in particular to a multi-touch detection technology.

Background technique

With the rapid development and application of information technology, wireless mobile communication and information home appliances, many information products have been transformed from traditional input devices such as keyboards or mice in order to achieve the purpose of more convenient portability, lighter volume and more humanized operation. To use the touch panel (Touch Panel) as an input device.

Currently, the touch panel can be divided into two types according to its driving mode and structural design, one is a resistive panel module, and the other is a capacitive panel module. For the resistive panel module, the user needs to actually apply pressure on the resistive panel module to make some areas inside the resistive panel module conduct and generate corresponding coordinate signals, so the damage rate of the resistive panel module is relatively high . The following diagrams are used to further illustrate the single-point touch detection technology used in the existing resistive panel module.

Figure 1 is a schematic diagram of a resistive panel module. Please refer to FIG. 1 , the resistive panel module 10 is composed of conductive substrates 20 , 21 . The conductive substrates 20 and 21 respectively have a transparent resistive layer, and there is a very small gap between the conductive substrate 20 and the conductive substrate 21 , so that the conductive substrates 20 and 21 are not connected to each other. The conductive substrate 20 has two sides, respectively an X+ side and an X− side. The conductive substrate 21 has two sides, respectively a Y+ side and a Y− side.

FIG. 2 is a schematic diagram of the principle of measuring Y-direction coordinates when a conventional touch panel is touched by a single point. Please refer to FIG. 1 and FIG. 2 together. When the point P of the touch interface (not shown in the figure) is touched, the conductive substrates 20 and 21 will contact each other at the relative position of the point P, thus conducting with each other. Next, the detection module 30 measures the coordinates of the point P in the X direction and the Y direction respectively.

When measuring the coordinates in the Y direction, the X-side will switch to an open state. The control signal C1 controls the switch 121 to be turned on to provide the voltage +VCC to the Y+ side. In addition, the control signal C2 controls the switch 122 to be turned on, so as to provide the ground voltage GND to the Y-side. Then, the analog to digital converter (Analog To Digital Converter) 40 measures the voltage difference between the X+ side and the Y− side. Since the voltage difference between the X+ side and the Y- side is proportional to the coordinate in the Y direction, the coordinate of the point P in the Y direction can be estimated by the voltage difference between the X+ side and the Y- side. The manner of estimating the coordinates of point P in the X direction by analogy will not be repeated here.

It is worth noting that existing resistive panel modules can only sense a single touch. Existing resistive panel modules cannot respond when subjected to multiple points of pressure. Therefore, the existing resistive panel modules cannot meet consumers' needs for diversified product functions.

Contents of the invention

The purpose of the present invention is to provide a touch panel capable of measuring multi-touch situations.

The invention provides a touch panel, which can evaluate the multi-point touch situation according to the resistance variation of the conduction path in the resistive panel module.

The invention provides a touch panel, which includes a resistive panel module, a voltage dividing resistor, a selector and a detection module. The resistive panel module has a first conduction path and a second conduction path. One end of the voltage dividing resistor receives a voltage source. The selector is connected to the other end of the voltage dividing resistor, and connected to both ends of the first conduction path and the second conduction path. The detection module is coupled to the selector. When a multi-point touch event occurs, the first conduction path and the second conduction path are multi-point mutual conduction, the selector selects the first conduction path and the voltage dividing resistor in series, and uses the detection module to detect the first conduction Both ends of the path to evaluate the touch situation for multi-touch events.

In an embodiment of the present invention, the selector includes a first multiplexer, a second multiplexer and a third multiplexer. The first multiplexer has a first input terminal, a second input terminal, and an output terminal respectively connected to the first end of the first conduction path, the first end of the second conduction path, and the voltage dividing resistor. The second multiplexer has a first input terminal, a second input terminal and an output terminal respectively connected to the first terminal of the first conducting path, the first terminal of the second conducting path and the detection module. The third multiplexer has a first input terminal, a second input terminal and an output terminal respectively connected to the second end of the first conduction path, the second end of the second conduction path and the detection module.

In an embodiment of the present invention, the detection module is an analog-to-digital converter, having a first input terminal and a second input terminal respectively coupled to the output terminal of the second multiplexer and the output terminal of the third multiplexer.

In an embodiment of the present invention, the detection module detects the two ends of the first conduction path, and measures the voltage or resistance of the two ends of the first conduction path, so as to estimate the mutual distance of the multi-touch events. In another embodiment, the touch situation of the multi-touch event is evaluated according to the resistance value, a table is established, and the mutual distance corresponding to the resistance value is found by looking up the table. In yet another embodiment, when there is no data in the table, two resistance values in the table with adjacent resistance values are used to perform an interpolation method to obtain the corresponding mutual distance. In yet another embodiment, the multi-touch event is a two-point touch.

In an embodiment of the invention, the resistive panel module includes a first conductive substrate and a second conductive substrate. The first conductive substrate has a first conduction path along a first direction. The second conductive substrate is parallel to the first conductive substrate. The second conductive substrate has a second conduction path along a second direction, wherein the first direction and the second direction are perpendicular to each other. In another embodiment, the resistive panel module is a four-wire resistive panel module.

From another point of view, the present invention provides a touch panel, including a resistive panel module, a first voltage dividing resistor, a second voltage dividing resistor, a selector and a detection module. The resistive panel module has a first conduction path and a second conduction path. One end of the first voltage dividing resistor is coupled to the first conduction path. One end of the second voltage dividing resistor is coupled to the second conduction path. The selector receives a voltage source. The selector is connected to the other end of the first voltage dividing resistor and the other end of the second voltage dividing resistor, and is connected to two ends of the first conduction path and two ends of the second conduction path. The detection module is coupled to the selector. When a multi-point touch event occurs, the first conduction path and the second conduction path are multi-pointed to each other, and the selector selects a voltage source coupled to the first voltage dividing resistor, and detects the first conduction path with the detection module to evaluate the touch situation of the multi-touch event.

In an embodiment of the present invention, the selector includes a first multiplexer, a second multiplexer and a third multiplexer. The first multiplexer has a first input terminal, a second input terminal and an output terminal respectively connected to the other end of the first voltage dividing resistor, the other end of the second voltage dividing resistor and the voltage source. The second multiplexer has a first input terminal, a second input terminal and an output terminal respectively connected to the first terminal of the first conducting path, the first terminal of the second conducting path and the detection module. The third multiplexer has a first input terminal, a second input terminal and an output terminal respectively connected to the second end of the first conduction path, the second end of the second conduction path and the detection module.

When a multi-point touch event occurs, a part of the first conduction path in the resistive panel module will be connected in parallel with a part of the second conduction path, so the resistance of the first conduction path will decrease. The present invention evaluates the touch situation of the multi-touch event by measuring the resistance change or the voltage change of the first conduction path. Therefore, the change of the above-mentioned resistance value can be used as an input signal of the man-machine interface to control the electronic device.

The beneficial effect of the present invention is that the present invention evaluates the touch situation of the multi-point touch event by measuring the resistance variation of the conduction path in the resistive panel module. Therefore, the change of the above-mentioned resistance value can be used as an input signal of the man-machine interface to control the electronic device.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, several embodiments are given below and described in detail in conjunction with the accompanying drawings.

Description of drawings

1 is a schematic diagram of a resistive panel module;

FIG. 2 is a schematic diagram of the principle of measuring the Y-direction coordinates when the existing touch panel is touched by a single point;

3A is an equivalent circuit diagram of a resistive panel module when two points are not touched on the touch panel according to the first embodiment of the present invention;

Fig. 3B is an equivalent circuit diagram of the resistive panel module when two points are touched in Fig. 3A;

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

4B is a flowchart of a multi-touch detection method according to the first embodiment of the present invention;

5A is a schematic diagram of a selector and detection module according to the first embodiment of the present invention;

5B is a schematic diagram of another selector and detection module according to the first embodiment of the present invention.

Detailed ways

Existing resistive panel modules can only detect the position of a touch point during a single touch. Existing resistive panel modules will not be able to respond when a multi-touch event occurs. In view of this, when a multi-touch event occurs, the embodiment of the present invention utilizes the impedance (voltage) variation of the resistive panel module to evaluate the touch situation of the multi-touch event.

first embodiment

Please refer to FIG. 1 first. The multi-touch event of this embodiment is described by taking a two-point touch event as an example, and the resistive panel module 10 is described by taking a four-wire resistive panel module as an example. Assuming that the touch points of the two-point touch event are respectively at point P1 and point P2 (not shown in the figure) of the touch interface, when point P1 is touched, point Px1 of the conductive substrate 20 will be in contact with point Py1 of the conductive substrate 21 Point conduction. When the P2 point is touched, the Px2 point of the conductive substrate 20 will conduct with the Py2 point of the conductive substrate 21 .

3A is an equivalent circuit diagram of a resistive panel module when two points of the touch panel are not touched according to the first embodiment of the present invention. FIG. 3B is an equivalent circuit diagram of the resistive panel module in FIG. 3A when two points are touched. Please refer to FIG. 1 , FIG. 3A and FIG. 3B together. In this embodiment, it is assumed that Px1 is closer to the X+ side than Px2, Px2 is closer to the X- side than Px1, Py1 is closer to the Y+ side than Py2, and Py2 is closer to the Y-side than Py1.

In Fig. 3A and Fig. 3B, the resistance 101 is the equivalent resistance between the Y+ side and the Py1 point, the resistance 102 is the equivalent resistance between the Py1 point and the Py2 point between the conductive substrate 21, and the resistance 103 is the Py2 point and the Y- side The equivalent resistance between. Similarly, the resistor 104 is the equivalent resistance between the X+ side and the Px1 point, the resistor 105 is the equivalent resistance between the Px1 point and the Px2 point between the conductive substrate 20, and the resistor 106 is the equivalent resistance between the Px2 point and the X- side. effective resistance. In addition, in FIG. 3B , the resistor 107 is the equivalent resistance between the Py1 point and the Px1 point, and the resistor 108 is the equivalent resistance between the Py2 point and the Px2 point. Since the resistance values of the resistors 107 and 108 are relatively small, the resistance values of the resistors 107 and 108 can be ignored.

When the two-point touch event does not occur, the resistance between the Y+ side and the Y− side is the sum of the resistance values of the resistors 101 , 102 , and 103 . However, when a two-point touch event occurs, since the resistor 102 is connected in parallel (resistor 107+resistor 105+resistor 108), the resistance between Py1 and Py2 will decrease. In addition, as the distance between Py1 and Py2 in the Y direction increases, that is, the resistance between Py1 and Py2 increases, the resistance between Py1 and Py2 decreases under the effect of parallel connection. bigger. In other words, the distance between the point Py1 and the point Py2 in the Y direction can be evaluated according to the amount of resistance drop between the Y+ side and the Y− side.

Similarly, when the two-point touch event does not occur, the resistance between the X+ side and the X− side is the sum of the resistances of the resistors 104 , 105 , and 106 . However, when a two-point touch event occurs, since the resistor 105 is connected in parallel (resistor 107+resistor 102+resistor 108), the resistance between Px1 and Px2 will decrease. In addition, as the distance between Px1 and Px2 in the X direction increases, that is, the resistance between Px1 and Px2 increases, under the effect of parallel connection, the resistance between Px1 and Px2 decreases. will also be bigger. In other words, the distance between the point Px1 and the point Px2 in the X direction can be evaluated according to the amount of resistance drop between the X+ side and the X− side.

FIG. 4A is a schematic diagram of a touch panel according to the first embodiment of the present invention. Please refer to FIG. 1 and FIG. 4A together. The touch panel 60 includes a resistive panel module 10 , a selector 30 and a detection module 50 . The resistive panel module 10 has conductive substrates 20 , 21 . The conductive substrate 20 has a conducting path along the X direction, and the X+ side and the X− side are respectively two ends of the conducting path in the X direction. The conductive substrate 21 is parallel to the conductive substrate 20 . The conductive substrate 21 has a conduction path along the Y direction, and the Y+ side and the Y− side are respectively two ends of the Y direction conduction path. The above-mentioned X direction and Y direction are perpendicular to each other. When a touch event occurs, the conductive substrates 20 and 21 will conduct with each other; otherwise, when the touch event is released, the conductive substrates 20 and 21 will not conduct with each other. The selector 30 is coupled between the resistive panel module 10 and the detection module 50 for determining the coupling relationship between the resistive panel module 10 and the detection module 50 . The detection module 50 is used to detect the change of the resistance between the "X+side, X-side" or "Y+side, Y-side" of the resistive panel module 10 to evaluate the touch event of the touch event.

Following the above, FIG. 4B is a flow chart of the multi-touch detection method according to the first embodiment of the present invention. Please refer to FIG. 1 , FIG. 3A , FIG. 3B , FIG. 4A and FIG. 4B in combination. When a two-point touch event occurs on the resistive panel module 10 , the detection module 50 can measure the change of the resistance value between the Y+ side and the Y− side (step S401 ). Then, the distance between the point Py1 and the point Py2 in the Y direction can be determined according to the change of the above-mentioned resistance value (step S402 ). In more detail, when the resistance value between the Y+ side and the Y- side gradually increases, it means that the distance between the Py1 point and the Py2 point in the Y direction gradually decreases; on the contrary, when the resistance between the Y+ side and the Y- side When the resistance value gradually decreases, it means that the distance between the Py1 point and the Py2 point in the Y direction gradually increases.

Step S401 will be described in more detail below. When no touch event occurs, the detection module 50 may first measure the first resistance between the Y+ side and the Y− side. Next, when a two-point touch event occurs, the detection module 50 can switch the X+ side and the X− side to an open state, and measure the second resistance between the Y+ side and the Y− side. Then, according to the difference between the first resistance value and the second resistance value, the change of the resistance value between the Y+ side and the Y− side can be known. An implementation manner of measuring the resistance change between the Y+ side and the Y− side by the touch panel 60 is provided below for reference by those skilled in the art.

FIG. 5A is a detailed schematic diagram of a touch panel according to the first embodiment of the present invention. Please refer to FIG. 1 , FIG. 3A , FIG. 3B , FIG. 4A and FIG. 5A in combination. In this embodiment, the touch panel 60 includes a resistive panel module 10 , a selector 30 , a voltage dividing resistor 201 , a detection module 50 and switches 121 and 122 . The detection module 50 may be, for example, the analog-to-digital converter 40 . The analog-to-digital converter 40 has input terminals +IN, −IN and reference voltage terminals +REF, −REF. The analog-to-digital converter 40 can convert the voltage across the input terminals +IN, -IN into digital data. Since the impedance of the input terminal +IN tends to be infinite, the input terminal +IN of the analog-to-digital converter 40 can be regarded as no current flows. The reference voltage terminals +REF and −REF can be used as the upper limit and lower limit for the analog-to-digital converter 40 to perform voltage conversion.

The switch 121 can determine whether the switch 121 is turned on or not according to the control signal C1 , so as to provide the voltage +VCC to one terminal of the voltage dividing resistor 201 and the reference voltage terminal +REF of the analog-to-digital converter 40 . The switch 122 can determine whether the switch 122 is turned on or not according to the control signal C2, so as to provide the ground voltage GND to the input terminal −IN and the reference voltage terminal −REF of the analog-to-digital converter 40 .

The selector 30 includes multiplexers 131 , 132 , 133 . In this embodiment, the output ends of the multiplexers 131 , 132 , 133 are respectively coupled to the other end of the voltage dividing resistor 201 and the input ends +IN, −IN of the analog-to-digital converter 40 . The multiplexers 131 , 132 , and 133 can respectively determine the mutual coupling relationship between the resistive panel module 10 and the analog-to-digital converter 40 according to the control signals C3 - C5 . With the difference of the control signals C1 - C5 , the detection module 50 can measure different data. For example, when the detection module 50 intends to measure the change of resistance between the Y+ side and the Y− side, the switch 121 can be switched to the conduction state according to the control signal C1. The switch 122 can be switched to an on state according to the control signal C2. The multiplexer 131 can be switched to 0 according to the control signal C3, so that the voltage dividing resistor 201 is coupled to the Y+ side. The multiplexer 132 can be switched to 1 according to the control signal C4, so that the input terminal +IN of the analog-to-digital converter 40 is coupled to the Y+ side. The multiplexer 133 can be switched to 1 according to the control signal C5, so that the input terminal -IN of the analog-to-digital converter 40 is coupled to the Y-side.

Since the voltage VCC, the ground voltage GND and the resistance of the voltage dividing resistor 201 are existing. In addition, the cross voltage between the Y+ side and the Y− side can be measured through the analog-to-digital converter 40 . Therefore, the resistance value between the Y+ side and the Y- side can be calculated by using the partial pressure theorem, so as to know the change of the resistance value between the Y+ side and the Y- side. Similarly, when the switches 121, 122 are switched to on state, and the multiplexers 131, 132, 133 are switched to 1, 0, 0 respectively, the analog-to-digital converter 40 can measure between the X+ side and the X- side change in the resistance value. It is worth noting that those skilled in the art can select resistors with smaller resistances to implement the voltage dividing resistor 201 to avoid affecting the dynamic range of the input terminal of the digital-to-analog converter 40 .

Not only that, when a single-point touch event occurs, the switches 121, 122 are switched to the on state, and the multiplexers 131, 132, 133 are respectively switched to 0, 0, 1, the analog-to-digital converter 40 can measure The position of the touch point in the Y direction. When a single-point touch event occurs, the switches 121, 122 are switched to the on state, and the multiplexers 131, 132, 133 are respectively switched to 1, 1, 0, and the analog-to-digital converter 40 can measure the touch point position in the X direction.

Furthermore, when a multi-touch event occurs, the switches 121, 122 are switched to the on state, and the multiplexers 131, 132, 133 are respectively switched to 0, 0, 1, the analog-to-digital converter 40 can measure The position of the middle point of multiple touch points in the Y direction. When a multi-touch event occurs, the switches 121, 122 are switched to the on state, and the multiplexers 131, 132, 133 are respectively switched to 1, 1, 0, and the analog-to-digital converter 40 can measure multiple touch points. The position of the middle point of the collision point in the X direction. The operating states of the switches 121 , 122 and the multiplexers 131 - 133 and the corresponding functions of the detection module 50 are summarized in Table 1 below for reference by those skilled in the art.

Table 1 The operating state of the switch module and the corresponding function of the detection module 50

switch 121 switch 122 Multiplexer 131 Multiplexer 132 Multiplexer 133 The signal measured by the detection module 50 turn on turn on 0 1 1 Resistance change between Y+ side and Y- side turn on turn on 1 0 0 Resistance change between X+ side and X- side turn on turn on 0 0 1 The position of the touch point in the Y direction turn on turn on 1 1 0 The touch point is in the X direction

Location

Please refer to FIG. 1 , FIG. 3A , FIG. 3B and FIG. 4A again. It is particularly worth mentioning that the change of the resistance value in the above step S401 can be used as an input signal of the man-machine interface. For example, if the user wants to enlarge the photo displayed on the monitor (not shown in the figure). The user can touch any two points on the touch interface of the touch panel 60 with two fingers respectively. As the distance between the two fingers in the Y direction increases, the resistance between the Y+ side and the Y- side will gradually decrease; on the contrary, as the distance between the two fingers in the Y direction decreases, the resistance between the Y+ side and the Y- side will gradually decrease. The resistance value will gradually increase. On the other hand, the controller (not shown in the figure) in the display can control the enlargement and reduction of the photo according to the resistance value between the Y+ side and the Y- side. As the resistance between the Y+ side and the Y- side will gradually decrease, the controller will gradually enlarge the picture displayed on the display; on the contrary, as the resistance between the Y+ side and the Y- side will gradually increase, the control will The monitor gradually reduces the photo displayed on the monitor.

Those skilled in the art should know that the above-mentioned photos of zooming in and out of the display is just a selected embodiment, and the present invention is not limited thereto. In other embodiments, the variation of the resistance between the Y+ side and the Y− side can also be used to control the operations of various electronic devices.

In addition, those skilled in the art can create a table of the distance between the two touch points corresponding to the resistance between the Y+ side and the Y− side. When the detection module 50 measures the resistance between the Y+ side and the Y− side, the distance between the two touch points can be obtained quickly through a look-up table. Not only that, those skilled in the art can use the interpolation method to improve the resolution of the table. That is to say, if there is no corresponding data in the table, the two similar resistance values in the table can be checked, and the distance between the two touch points can be obtained by interpolation method.

Moreover, the above-mentioned FIG. 5A is only an optional embodiment of the touch panel 60 , those skilled in the art can change the coupling and configuration of the components in the touch panel 60 according to their requirements. For example, FIG. 5B is a schematic diagram of another touch panel according to the first embodiment of the present invention. Please refer to FIG. 5A and FIG. 5B together. FIG. 5B is similar to FIG. 5A except that FIG. 5B uses voltage dividing resistors 202 and 203 to replace the voltage dividing resistor 201 in FIG. 5A .

Although a possible form of the touch panel and its multi-touch detection method has been described in the above-mentioned embodiments, those with ordinary knowledge in the technical field should know that each manufacturer has a different understanding of the touch panel and its multi-touch detection method. The design of the collision detection method is not the same, so the application of the present invention should not be limited to this possible type. In other words, as long as the change of the resistance value of the resistive panel module is used to evaluate the touch situation of the multi-touch event, it is in line with the spirit of the present invention. Several embodiments are given below so that those skilled in the art can further understand the spirit of the present invention and implement the present invention.

second embodiment

Please refer to FIG. 1 , FIG. 3A , FIG. 3B and FIG. 4A again. This embodiment is similar to the first embodiment. The difference is that in the first embodiment, the resistance change between the Y+ side and the Y− side is measured to determine the distance between the Py1 point and the Py2 point in the Y direction. In this embodiment, the distance between the point Px1 and the point Px2 in the X direction is determined by measuring the resistance change between the X+ side and the X− side. In this way, the effect similar to that of the first embodiment can also be achieved.

third embodiment

Please refer to FIG. 1 , FIG. 3A , FIG. 3B and FIG. 4A again. This embodiment is similar to the first embodiment. The difference is that in the first embodiment, the resistance change between the Y+ side and the Y− side is measured to determine the distance between the Py1 point and the Py2 point in the Y direction. This embodiment not only measures the change of the resistance value between the Y+ side and the Y− side, so as to determine the distance between the Py1 point and the Py2 point in the Y direction. At the same time, the distance between the point Px1 and the point Px2 in the X direction is judged by measuring the change of the resistance value between the X+ side and the X- side.

The advantage is that when the distance between the two touch points only changes in the X direction, the change in resistance between the X+ side and the X- side can be used as an input signal for the man-machine interface. On the other hand, when the distance between the two touch points only changes in the Y direction, the change of the resistance between the Y+ side and the Y- side can be used as the input signal of the man-machine interface.

To sum up, the present invention evaluates the touch situation of the multi-touch event by measuring the resistance variation of the conduction path in the resistive panel module. Therefore, the change of the above-mentioned resistance value can be used as an input signal of the man-machine interface to control the electronic device.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various 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 claims.

Claims (20)

1. A touch panel, characterized in that it comprises: A resistive panel module has a first conduction path and a second conduction path; A voltage dividing resistor, one end of which receives a voltage source; A selector, connected to the other end of the voltage dividing resistor, and connected to both ends of the first conduction path and the two ends of the second conduction path; and A detection module, coupled to the selector; When a multi-point touch event occurs, the above-mentioned first conduction path and the above-mentioned second conduction path are multi-point mutual conduction, and the selector selects the above-mentioned first conduction path and the above-mentioned voltage dividing resistor in series, and uses the above-mentioned The detection module detects both ends of the first conduction path to evaluate a touch situation of the multi-touch event. 2. The touch panel according to claim 1, wherein the selector comprises: A first multiplexer having a first input terminal, a second input terminal and an output terminal respectively connected to the first terminal of the first conduction path, the first terminal of the second conduction path and the voltage divider resistance; A second multiplexer, having a first input terminal, a second input terminal and an output terminal respectively connected to the first terminal of the first conducting path, the first terminal of the second conducting path and the detection module ;as well as A third multiplexer, having a first input terminal, a second input terminal, and an output terminal respectively connected to the second end of the first conduction path, the second end of the second conduction path, and the detection module . 3. The touch panel according to claim 2, wherein the detection module is an analog-to-digital converter having a first input terminal and a second input terminal respectively coupled to the second multiplexer The output terminal of and the output terminal of the above-mentioned third multiplexer. 4. The touch panel according to claim 1, wherein the detection module detects the two ends of the first conduction path, and measures the voltage at both ends of the first conduction path to estimate the multi-touch A mutual distance of collision events. 5. The touch panel according to claim 1, wherein the detection module detects both ends of the first conduction path, and measures resistance values at both ends of the first conduction path to estimate the multi-point A mutual distance for touch events. 6. The touch panel according to claim 5, wherein, according to the above-mentioned resistance value, the above-mentioned touch situation of the above-mentioned multi-touch event is evaluated, and a table is established, and the above-mentioned resistance value corresponding to the above-mentioned Mutual distance. 7 . The touch panel according to claim 6 , wherein when the table has no data, two resistance values in the table adjacent to the resistance value are used to perform an interpolation method to obtain the corresponding mutual distance. 8 . 8. The touch panel according to claim 1, wherein the multi-touch event is a two-point touch. 9. The touch panel according to claim 1, wherein the resistive panel module comprises: a first conductive substrate having the above-mentioned first conduction path along a first direction; and A second conductive substrate parallel to the first conductive substrate, the second conductive substrate has the second conduction path along a second direction, the first direction and the second direction are perpendicular to each other. 10. The touch panel according to claim 9, wherein the resistive panel module is a four-wire resistive panel module. 11. A touch panel, characterized by comprising: A resistive panel module has a first conduction path and a second conduction path; A first voltage dividing resistor, one end of which is coupled to the above-mentioned first conduction path; A second voltage dividing resistor, one end of which is coupled to the second conduction path; A selector, receiving a voltage source, the selector is connected to the other end of the first voltage dividing resistor and the other end of the second voltage dividing resistor, and is connected to both ends of the first conduction path and the second conduction path both ends; and A detection module, coupled to the selector; When a multi-point touch event occurs, the above-mentioned first conduction path and the above-mentioned second conduction path are connected to each other at multiple points, and the selector selects the above-mentioned voltage source to be coupled to the above-mentioned first voltage dividing resistor, and uses the above-mentioned detection The module detects both ends of the first conduction path to evaluate a touch situation of the multi-touch event. 12. The touch panel according to claim 11, wherein the selector comprises: A first multiplexer, having a first input terminal, a second input terminal and an output terminal respectively connected to the other end of the first voltage dividing resistor, the other end of the second voltage dividing resistor and the voltage source; A second multiplexer, having a first input terminal, a second input terminal and an output terminal respectively connected to the first terminal of the first conducting path, the first terminal of the second conducting path and the detection module ;as well as A third multiplexer, having a first input terminal, a second input terminal, and an output terminal respectively connected to the second end of the first conduction path, the second end of the second conduction path, and the detection module . 13. The touch panel according to claim 12, wherein the detection module is an analog-to-digital converter having a first input terminal and a second input terminal respectively coupled to the output of the second multiplexer terminal and the output terminal of the above-mentioned third multiplexer. 14. The touch panel according to claim 11, wherein the detection module detects the two ends of the first conduction path, and measures the voltage at both ends of the first conduction path to estimate the multi-touch A mutual distance of events. 15. The touch panel according to claim 11, wherein the detection module detects the two ends of the first conduction path, and measures the resistance at both ends of the first conduction path to estimate the multi-touch A mutual distance of collision events. 16. The touch panel according to claim 15, wherein the touch situation of the multi-touch event is evaluated according to the resistance value, a table is established, and the resistance value corresponding to the above-mentioned Mutual distance. 17 . The touch panel according to claim 16 , wherein when the table has no data, two resistance values in the table adjacent to the resistance value are used to perform an interpolation method to obtain the corresponding mutual distance. 18. The touch panel according to claim 11, wherein the multi-touch event is a two-point touch. 19. The touch panel according to claim 11, wherein the resistive panel module comprises: a first conductive substrate having the above-mentioned first conduction path along a first direction; and A second conductive substrate parallel to the first conductive substrate, the second conductive substrate has the second conduction path along a second direction, the first direction and the second direction are perpendicular to each other. 20. The touch panel according to claim 19, wherein the resistive panel module is a four-wire resistive panel module.

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