TWI421758B - Touch apparatus and driving method - Google Patents

Description

Touch device and driving method

The present invention relates to a driving technique, and more particularly to a touch device capable of increasing scanning speed and a driving method thereof.

In recent years, touch panels have been widely used in a variety of electronic products, such as: Global Positioning System (GPS), personal digital assistant (PDA), cellular phone and palm-sized A computer (Hand-held PC), etc., to replace traditional input devices (such as keyboards and mice). Generally, the touch panel senses the user's touch through the driving device, and outputs the coordinate to the electronic device according to the touched position, or directly performs the corresponding operation according to the touched position.

Generally, a plurality of electrodes and a conductive film are disposed on a touch panel of a conventional touch device, and an electrode is connected to the conductive film to output a potential of the conductive film. The conventional touch device sequentially reads the potential output by the electrode to calculate the touch point through the potential, and the conventional touch device reads the potential output by one electrode and processes it, and then reads it. The potential output by the next electrode. When reading the potential output from one electrode, the potential may change due to the influence of the touch. Therefore, the equipotential is stabilized before processing to avoid reading errors. However, depending on the development trend of the panel, for example, the size of the panel is increased, the panel boundary is reduced, or the optical performance is better, the voltage conversion time of the touch panel is elongated (that is, the time required for the potential to stabilize). The extension of the voltage conversion time affects the speed at which the touch device senses the touch panel, and the decrease in the sensing speed affects the smoothness of the touch point processing and the accuracy of the algorithm.

The invention provides a touch device with a faster detection speed.

The invention provides a driving method suitable for enabling a touch device to have a faster detection speed.

The invention provides a touch device, which comprises a touch panel, a plurality of voltage storage elements, a voltage supply unit and a processing unit. The touch panel has a plurality of electrodes. These voltage storage elements are respectively coupled to the electrodes. The voltage supply unit is coupled to the electrodes and is adapted to supply voltages and provide no voltage to the electrodes, respectively. When the voltage supply unit does not provide a voltage to voltage storage element, the voltage storage element is adapted to reach a potential balance during an energy storage time to store a potential of a corresponding electrode. The energy storage times of the partial voltage storage elements at least partially overlap each other, and the energy storage times of the two voltage storage elements respectively coupled to the adjacent two electrodes do not overlap each other. The processing unit couples the electrodes to the voltage storage elements and is adapted to employ a potential stored by each of the voltage storage elements when the potential balance is reached.

The invention also provides a driving method suitable for driving a touch device. This driving method includes the following steps. Firstly, a plurality of electrodes are provided and respectively provided with no voltage to the touch device, wherein the electrodes are coupled to the plurality of voltage storage elements of the touch device. When the voltage is not supplied to the electrode, the electric potential of the electrode and the voltage storage element is balanced in a storage time, wherein the energy storage time of the partial voltage storage element at least partially overlaps with each other and is coupled to the adjacent two electrodes respectively. The energy storage times of the two voltage storage elements do not overlap each other. In addition, the potentials stored by the respective voltage storage elements at the time of potential balance are employed.

Based on the above, the touch device of the present invention and the driving method thereof, when the touch device is driven, the energy storage times of the partial voltage storage elements partially overlap or completely overlap each other, and are stored by the voltage storage element after the energy storage time. Potential. Thereby, the detection time of the touch panel can be reduced to accelerate the detection speed of the touch device.

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

FIG. 1 is a circuit diagram of a touch device according to an embodiment of the invention. Referring to FIG. 1 , the touch device 100 includes a touch panel 110 and a peripheral circuit 120 . In this In the embodiment, the touch panel 110 is, for example, a carbon nano-tube (CNT) touch panel. However, in other embodiments, the touch panel may also be a capacitive touch panel or a resistive touch panel. The touch panel 110 includes an upper substrate 111 and a lower substrate 115. The transparent conductive film 112 is covered on the upper substrate 111 on the side of the lower substrate 115, and the transparent conductive film 116 is covered on the side of the lower substrate 115 facing the upper substrate 111, wherein the conductive films 112 and 116 are impedance anisotropic conductive films, and In the present embodiment, the main conductive direction of the transparent conductive film 112 (as indicated by the direction X) is substantially perpendicular to the main conductive direction of the transparent conductive film 116 (as indicated by the direction Y). The upper substrate 111 can be configured with electrodes 113_1~113_12, and the lower substrate 115 can be configured with electrodes 117_1~117_12, wherein the electrodes 113_1~113_12 are connected to the transparent conductive film 112, and the arrangement direction of the electrodes 113_1~113_12 can be perpendicular to the main conductive of the transparent conductive film 112. In the direction, the electrodes 117_1 117 117_12 are connected to the transparent conductive film 116, and the arrangement direction of the electrodes 117_1 117 117_12 may be perpendicular to the main conductive direction of the transparent conductive film 116.

The peripheral circuit 120 includes a control unit 121, multiplexers 122, 123, 126, voltage supply units 124, 125, an analog-to-digital converter (ADC) 127, and a digital signal processor (Digital Signal Processor, DSP). 128 and capacitors (ie, voltage storage elements) C1_1~C1_12, C2_1~C2~_12, wherein multiplexers 122, 123, 126 are, for example, analog multiplexers. Capacitors C1_1~C1_12 are respectively coupled between electrodes 117_1~117_12 and ground. Capacitors C2_1~C2_12 are respectively coupled between electrodes 113_1~113_12 and ground. Capacitors C1_1~C1_12 can be electrodes 117_1~117_12 and ground. The physical capacitance between the capacitors C2_1~C2_12 can be the physical capacitance between the electrodes 113_1~113_12 and the ground. The capacitors C1_1~C1_12 are coupled between the multiplexer 122 and the ground, and the capacitors C2_1~C2_12 are coupled between the multiplexer 123 and the ground. The voltage supply unit 124 is coupled to the electrode 113_1~113_12, the voltage supply unit 125 is coupled to the electrodes 117_1~117_12. The multiplexer 122 is coupled to the electrodes 117_1~117_12 and the capacitors C1_1~C1_12, and the multiplexer 123 is coupled to the electrodes 113_1~113_12 and the capacitors C2_1~C2_12. The multiplexer 126 is coupled to the multiplexers 122, 123 and the analog digital converter 127. The analog digital converter 127 is coupled to the digital signal processor 128. The multiplexers 122, 123, 126, the voltage supply units 124, 125, the analog-to-digital converter 127, the control unit 121, and the digital signal processor 128 can be regarded as a processing unit.

Before the detection of the touch panel 110 is performed, the voltage supply unit 124 is controlled by the control unit 121 to provide a ground voltage to the electrodes 113_1~113_12 and the capacitors C2_1~C2_12, and the voltage supply unit 125 is controlled by the control unit 121 to provide the voltage V. _DD to electrodes 117_1~117_12 and capacitors C1_1~C1_12. The voltage supply unit 124 can include switches SW2_1~SW2_12, and the switches SW2_1~SW2_12 are respectively coupled between the electrodes 113_1~113_12 and the ground. The voltage supply unit 125 may include switches SW1_1~SW1_12, and the switches SW1_1~SW1_12 are respectively coupled between the electrodes 117_1~117_12 and the bias source P1. In other words, the switches SW2_1~SW2_12 are controlled to be turned on by the control unit 121 to provide a ground voltage to the electrodes 113_1~113_12. Similarly, the switches SW1_1~SW1_12 are also controlled to be turned on by the control unit 121 to provide the voltage V _{DD of the} bias source P1 to the electrodes 117_1 117 117_12.

When the touch panel 110 is detected, the voltage supply units 124 and 125 are controlled by the control unit 121 without providing a voltage V _DD or a ground voltage to the electrodes to be detected. For example, assuming that the electrode 117_1 of the touch panel 110 is detected, the switch SW1_1 is controlled by the control unit 121 and is not turned on to stop supplying the voltage V _DD to the electrode 117_1. Moreover, due to the action of the capacitor C1_1, the potential of the electrode 117_1 is still maintained, that is, when the touch point does not correspond to the position of the electrode 117_1, the potential of the electrode 117_1 is substantially maintained at the voltage V _DD . When the touch point corresponds to the position of the electrode 117_1, the electrode 117_1 is electrically connected to one of the electrodes 113_1 to 113_12 by the contact of the transparent conductive films 112 and 116.

Since the potential of the electrodes 113_1 to 113_12 is the ground voltage, the capacitor C1_1 will start to discharge, and the potential of the electrode 117_1 will start to decrease. Further, the decrease in potential of the electrode 117_1 to a stable potential (e.g., a potentiometer interposed between the voltage V _DD and the ground voltage), then capacitor C1_1 voltage balance is achieved. Then, the multiplexer 122 reads the potential of the capacitor C1_1 as the detection voltage X0 and transmits it to the multiplexer 126. Then, the multiplexer 126 is also controlled by the control unit 121 to transmit the detection voltage X0 to an Analog-to-Digital Converter (ADC) 127 to convert the detection voltage X0 into a digital signal and transmit it to the digital position. Signal processor.

The touch device 100 repeats the above operations on the electrodes 113_1~113_12 and 117_2~117_12 to detect whether the touch point corresponds to the positions of the electrodes 113_1~113_12 and 117_1~117_12. When detecting the electrodes 113_1~113_12, since the electrodes 117_1~117_12 are higher than the potentials of the electrodes 113_1~113_12, when the touch points correspond to the positions of the electrodes 113_1~113_12, the capacitors C2_1~C2_12 are charged, and the capacitor C2_1~ C2_12 reaches the potential after the potential is flushed as the detection voltage Y0~Y11. After detecting the electrodes 113_1~113_12 and 117_1~117_12, the multiplexers 122 and 123 sequentially output the detection voltages X1~X11 and Y0~Y11 to the multiplexer 126, and the multiplexer 126 sequentially detects the voltages. X1~X11 and Y0~Y11 are sent to the analog digital converter 127 to convert the detection voltages X1~X11 and Y0~Y11 into digital signals. When receiving the digital signals converted by the detection voltages X0~X11 and Y0~Y11, the digital signal processor performs calculations through the digital signals corresponding to the detection voltages X0~X11 to calculate the X corresponding to the touch points. The axis position is calculated by the digital signal corresponding to the detection voltages Y0~Y11 to calculate the Y axis corresponding to the touch point. position.

FIG. 2 is a timing chart of driving of the touch device of FIG. 1. FIG. Referring to FIG. 1 and FIG. 2, only the driving timing of the electrodes 117_1 to 117_12 will be described here, and the driving timing of the electrodes 113_1 to 113_12 can be understood by referring to the driving timing of the electrodes 117_1 to 117_12. Before time t21, the voltage supply unit 125 supplies the voltage V _DD to the electrodes 117_1 117 117_12 and the capacitors C1_1 C C1_12. At time t21, the switch SW1_1 will not conduct, so that the potential of the electrode capacitor C1_1 can reach the potential balance, so as to detect the electrode 117_1, wherein the time t21 can be regarded as the energy storage time of the capacitor C1_1 coupled to the electrode 117_1.

Then, at time t22, the detection voltage X0 is transmitted to the analog-to-digital converter 127 through the multiplexers 122 and 126, and the detection voltage X0 is converted into a digital signal. For example, the time t23, t25, and t27 can be referred to the description of t21. For the times t24, t26, and t28, the description of t22 can be referred to. Thereby, the electrodes 117_4, 117_7 and 117_10 can be detected, and the potentials of the capacitor C1_4, the capacitor C1_7 and the capacitor C1_10 are sequentially used after the corresponding energy storage time, and the driving timings of the remaining electrodes can be referred to the above description, and will not be described again. . It is to be noted that the times t21, t23, t25, and t27 are partially overlapped with each other, and the times t22, t24, t26, and t28 do not overlap each other. Moreover, the energy storage times of the capacitors (such as C1_1 and C1_2) coupled to adjacent electrodes (such as 117_1 and 117_2) do not overlap each other.

3 is a timing chart of driving of another touch device for the touch device of FIG. 1 . Referring to FIG. 2 and FIG. 3, in FIG. 3, time t11 can be referred to the description of time t21, and time t12 can be referred to the description of time t22. Moreover, the electrodes 117_1~117_12 are sequentially detected, and the detection times of the electrodes 117_1~117_12 do not overlap each other. As can be seen, compared with FIG. 3, the energy storage time in FIG. 2 partially overlaps, and the detection time of the electrodes 117_1~117_12 can be reduced. In other words, in the driving timing of FIG. 2, the detection time of the electrodes 117_1~117_12 takes only one time t21 And 12 t22, in the driving timing of FIG. 3, the detection time of the electrodes 117_1~117_12 requires 12 times t21 and 12 t22. Moreover, the time t21 is greater than t22, so the detection time of the electrodes 117_1~117_12 can be greatly reduced to speed up the detection speed of the electrodes 117_1~117_12.

4 is a partial circuit diagram of a touch device according to another embodiment of the present invention. Only part of the circuit diagram is shown here to illustrate the difference. Please refer to FIG. 1 and FIG. 4, and the difference is capacitance C3_1~C3_12. Capacitors C3_1~C3_12 are connected in parallel with capacitors C1_1~C1_12. Capacitors C1_1~C1_12 are solid capacitors, and capacitors C3_1~C3_12 are stray capacitances. In other embodiments, a solid capacitor may not be used, but only a stray capacitance. The stray capacitance includes a stray capacitance between the transparent conductive film 116 and the transparent conductive film 112, or a stray capacitance between the electrodes 117_1 to 117_12 and the ground. Moreover, the circuit between the electrodes 113_1~113_12 and the multiplexer 123 can be modified with reference to the above description of the embodiment, and will not be repeated here.

FIG. 5 is a partial circuit diagram of a touch device according to still another embodiment of the present invention. Only a part of the circuit diagram is shown here, and the rest of the parts not shown can be referred to the description of FIG. 1 and will not be described here. Referring to FIG. 5 and FIG. 4, the switches SW3_1~SW3_12 and the switches SW3_1~SW3_12 are respectively coupled between the electrodes 117_1~117_12 and the capacitors C1_1~C1_12, and the switches SW3_1~SW3_12 are controlled by the control unit 121. Or not. In this embodiment, the capacitors C3_1~C3_12 may be the stray capacitances described above. Further, the circuit between the electrodes 113_1 to 113_12 and the multiplexer 123 can be modified with reference to the above description of the present embodiment.

FIG. 6 is a timing chart of driving of the touch device of FIG. 5. FIG. Referring to FIG. 1, FIG. 5 and FIG. 6, at time t31, the switches SW1_2~SW1_6 and SW1_8~SW1_12 are turned on, and the switches SW1_1 and SW1_7 are not turned on, so that the voltage V _{DD is} not supplied to the electrodes 117_1, 117_7 and the capacitor. C1_1, C1_7, C3_1, C3_7. When the touch point corresponds to the electrode 117_1 or 117_7, the potentials of the capacitors C1_1, C1_7 or the capacitors C3_1, C3_7 may change, otherwise the potentials of the capacitors C1_1, C1_7 or the capacitors C3_1, C3_7 may be substantially maintained at the voltage V _DD . The time t31 can be regarded as the energy storage time of the capacitors C1_1 and C1_7.

At time t32, the multiplexer 122 uses the potential of the capacitor C1_1 as the detection voltage X0. At this time, SW3_1 will not be turned on to open the capacitor C1_1 and the electrode 117_1, and the switch SW1_1 will be turned on to supply the voltage V _DD to the electrode 117_1 and the capacitor C3_1. Moreover, SW3_7 will not conduct to open capacitor C1_7 and electrode 117_7, and switch SW1_7 will be turned on to provide voltage V _DD to electrode 117_7 and capacitor C3_7. At time t33, the multiplexer 122 uses the potential of the capacitor C1_7 as the detection voltage X6, and since the electrode 117_1 has been detected, the SW3_1 is turned on to connect the capacitor C1_1 and the electrode 117_1. In other words, the potential of the capacitor C1_1 is used by the multiplexer 122 after time t31, and the potential of the capacitor C1_7 is used by the multiplexer 122 after the time t31 and at the interval t32. After time t33, since the electrode 117_7 has been detected, SW3_7 is turned on to connect the capacitor C1_7 with the electrode 117_7. Thereby, the energy storage times of the capacitors C1_1 and C1_7 completely overlap, and then the energy storage times of the capacitors C1_2 and C1_8 completely overlap, and the rest can be understood from the figure. Moreover, the multiplexer 122 uses the potentials of the coupling capacitors C1_1~C1_12 as the detection voltages X0~X11.

Furthermore, when SW3_1 and SW3_7 are non-conducting (ie, times t32 and t33), the capacitors C1_1 and C1_7 are not affected by the potentials of the electrodes 117_1 and 117_7, so the voltage supply unit 125 can further supply the voltage V _DD to the electrode 117_1. And 117_7. Moreover, the switches SW1_2 and SW1_8 can be rendered non-conductive, so that the electrodes 117_2 and 117_8 are in the energy storage time, and the detection voltages X1 and X7 can be used according to the above-described operation after the energy storage time of the corresponding electrodes 117_2 and 117_8. The driving time of the remaining electrodes is referred to the above description, and will not be described herein.

FIG. 3 is a schematic diagram of a touch panel of a touch device according to still another embodiment of the present invention. Referring to FIG. 1 and FIG. 7 , the touch device of the present embodiment is similar to the touch device 100 described above, and the difference between the two is as follows. In this embodiment, the touch panel is an example of a resistive touch panel. On the upper substrate 111, a surface different from the bottom substrate 115 is covered with a plurality of transparent conductive strips 114, and a side of the lower substrate 115 facing the upper substrate 111 is covered with a plurality of transparent conductive strips 118, wherein each transparent conductive strip 114 is substantially The upper side is perpendicular to each of the transparent conductive strips 118. The electrodes 113_1 to 113_12 of the upper substrate 111 are respectively connected to the transparent conductive strips 114, and the electrodes 117_1 to 117_12 of the lower substrate 115 are respectively connected to the transparent conductive strips 118.

It should be noted that the illustrations and descriptions of the above embodiments are for teaching purposes, such as the number of electrodes and the timing of driving, and do not limit other embodiments of the present invention. Moreover, those skilled in the art can change the energy storage time to reduce the detection time and accelerate the detection speed of the touch panel 110. In some embodiments, multiplexer 126 is omitted due to circuit design, or multiplexers 122, 123, and 126 are integrated into a multiplexer.

In addition, according to the action of the touch device, the touch method can be integrated into a driving method. FIG. 8 is a flow chart of a driving method according to an embodiment of the present invention. Referring to FIG. 8, in step S110, a voltage is supplied or not provided to the electrodes of the touch device. When no voltage is supplied to the electrode, the electric current of the electrode and the voltage storage element is balanced in the storage time to be stored in the voltage storage element. Next, the voltage storage element is used to reach the potential stored at the potential balance (S120). Then, the potential stored in the voltage storage element when the potential balance is reached is converted into a digital signal (S130), and then the operation is performed in accordance with the digital signal (S140) to obtain the position of the touch point. For details of each step, refer to the description of the above device, and details are not described herein again.

In summary, in the touch device and the driving method thereof, when the touch device is driven, the energy storage times of the partial voltage storage elements partially overlap or completely overlap each other, and after the energy storage time or at intervals The potential stored by the voltage storage element is used after the interval. Thereby, the detection time of the touch panel can be reduced to accelerate the detection speed of the touch device.

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

100‧‧‧ touch device

110‧‧‧Touch panel

111, 115‧‧‧ substrate

112, 116‧‧‧ Transparent conductive film

113_1~113_12, 117_1~117_12‧‧‧ electrodes

114, 118‧‧‧Transparent conductive strips

120‧‧‧ peripheral circuits

121‧‧‧Control unit

122, 123, 126‧‧‧ multiplexers

124, 125‧‧‧Voltage supply unit

127‧‧‧ analog digital converter

128‧‧‧Digital Signal Processor

C1_1~C1_12, C2_1~C2_12, C3_1~C3_12‧‧‧ capacitor

SW1_1~SW1_12, SW2_1~SW2_12, SW3_1~SW3_12‧‧" switch

X0~X11, Y0~Y11‧‧‧Detection voltage

P1‧‧‧ bias source

V _DD ‧‧‧ voltage

S110, S120, S130, S140‧‧ steps

T11~t12, t21~t28, t31~t33‧‧‧ time

X, Y‧‧ direction

FIG. 1 is a circuit diagram of a touch device according to an embodiment of the invention.

FIG. 2 is a timing chart of driving of the touch device of FIG. 1. FIG.

3 is a timing chart of driving of another touch device for the touch device of FIG. 1 .

4 is a partial circuit diagram of a touch device according to another embodiment of the present invention.

FIG. 5 is a partial circuit diagram of a touch device according to still another embodiment of the present invention.

FIG. 6 is a timing chart of driving of the touch device of FIG. 5. FIG.

FIG. 7 is a schematic diagram of a touch panel of a touch device according to still another embodiment of the present invention.

FIG. 8 is a flow chart of a driving method according to an embodiment of the present invention.

100‧‧‧ touch device

110‧‧‧Touch panel

111, 115‧‧‧ substrate

112, 116‧‧‧ Transparent conductive film

113_1~113_12, 117_1~117_12‧‧‧ electrodes

120‧‧‧ peripheral circuits

121‧‧‧Control unit

122, 123, 126‧‧‧ multiplexers

124, 125‧‧‧Voltage supply unit

127‧‧‧ analog digital converter

128‧‧‧Digital Signal Processor

C1_1~C1_12, C2_1~C2_12‧‧‧ capacitor

SW1_1~SW1_12, SW2_1~SW2_12‧‧" switch

X0~X11, Y0~Y11‧‧‧Detection voltage

P1‧‧‧ bias source

V _DD ‧‧‧ voltage

X, Y‧‧ direction

Claims (15)

A touch device includes: a touch panel having an upper substrate and a lower substrate, wherein the upper substrate is configured with a plurality of electrodes, the lower substrate is configured with a plurality of electrodes; and a plurality of voltage storage elements, each of the voltage storage element couplings One of the plurality of electrodes connected to the upper substrate and the lower substrate; a voltage supply unit coupled to the plurality of electrodes of the upper substrate and the lower substrate, and adapted to respectively supply a voltage and respectively provide no voltage to the And an electrode, wherein when the voltage supply unit does not supply a voltage to one of the voltage storage elements, the one voltage storage element is adapted to reach a potential balance during an energy storage time, and storing and storing the voltage One of the plurality of electrodes corresponding to the component is potential, and the energy storage times of the voltage storage components at least partially overlap each other, and the voltage storage component is coupled to the adjacent two of the electrodes The storage periods do not overlap each other; and a processing unit coupling the plurality of electrodes of the upper substrate and the lower substrate with the voltage storage elements, and The plurality of potential use in the plurality of voltage storage element at a stored voltage balance is achieved. The touch device of claim 1, wherein the voltage supply unit comprises a plurality of first switches respectively coupled between the electrodes and a bias source, when the first switch is turned on, The bias source provides a voltage to the corresponding electrode, and when the first switch is non-conducting, the bias source does not provide a voltage to the corresponding electrode. The touch device of claim 2, wherein the processing unit comprises: a multiplexer coupled to the upper substrate and the plurality of electrodes of the lower substrate and the voltage storage components; and an analog-to-digital converter Coupling the multiplexer, wherein the multiplexer is adapted to transmit And sending the potentials stored by the voltage storage elements after the energy storage time to the analog digital converter, and the analog digital converter is adapted to sequentially convert the potentials into a plurality of digital signals; and a digit The signal processor is coupled to the analog digital converter for performing operations according to the digital signals. The touch device of claim 1, further comprising: a plurality of second switches respectively coupled between the plurality of electrodes of the upper substrate and the lower substrate and the corresponding voltage storage elements, wherein Each of the second switches switches to non-conduction after the stored energy storage time of the corresponding voltage storage element. The touch device of claim 4, wherein the processing unit is adapted to respectively use the corresponding voltage storage elements after the interval between at least some of the second switches is not turned on. Potential. The touch device of claim 1, further comprising a control unit for controlling the voltage supply unit to supply or not to supply voltage to the plurality of electrodes of the upper substrate and the lower substrate, and controlling the processing unit The time points at which the potentials are stored by the voltage storage elements are used. The touch device of claim 1, wherein each of the voltage storage elements comprises a one of an electrode coupled to a corresponding one of the upper substrate and the plurality of electrodes of the lower substrate and a ground. A stray capacitance, wherein the stray capacitance is coupled between the processing unit and the ground. The touch device of claim 1, wherein each of the voltage storage elements includes a capacitor coupled between the one of the plurality of electrodes of the upper substrate and the lower substrate and a ground. The capacitor is coupled between the processing unit and the ground. The touch device of claim 1, wherein the touch panel comprises a first conductive film and a second conductive film, and the electrodes are connected to the At least one of the first conductive film and the second conductive film. The touch device of claim 9, wherein the first conductive film and the second conductive film are each an anisotropic conductive film. The touch device of claim 1, wherein the touch panel is a resistive touch panel or a carbon nanotube touch panel. A driving method is adapted to drive a touch device, the driving method comprising: respectively providing a plurality of electrodes that do not provide a voltage to the touch device, wherein each of the electrodes is coupled to the touch device Each of the plurality of voltage storage elements; when no voltage is supplied to one of the electrodes, the one of the plurality of voltage storage elements corresponding to the one electrode is electrically located A potential balance is reached during a storage period, wherein some of the energy storage times of the voltage storage elements at least partially overlap each other, and the energy storage times of the voltage storage elements coupled to the adjacent two of the electrodes are respectively Do not overlap each other; use the voltage storage elements to store the potentials when the potential balance is reached; convert the potentials stored by the electrodes to the potential balance into a plurality of digital signals; and according to the digital signals Perform the operation. The driving method of claim 12, wherein the using the electrodes to store the potentials when the potential balance is reached comprises: after the corresponding energy storage time, using the voltage storage elements to reach a potential balance The potentials stored at the time. The driving method described in claim 12, wherein the driving method is adopted The potentials stored by the electrodes when the potential balance is reached include: after the corresponding energy storage time, using the voltage storage elements to store the potentials when the potential balance is reached; and corresponding storage After some time interval between the times, the voltage storage elements are used to reach the potentials stored when the potential balance is reached. The driving method of claim 12, wherein the step of separately providing and respectively providing no voltage to the plurality of electrodes of the touch device comprises: storing the energy storage device of the voltage storage element corresponding to each of the electrodes During the time, no voltage is supplied to the electrode; and a voltage is supplied to the electrode outside of the energy storage time of the voltage storage element corresponding to each of the electrodes.