WO2020150968A1 - 触控面板、无线充电组件以及电子设备 - Google Patents

触控面板、无线充电组件以及电子设备 Download PDF

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Publication number
WO2020150968A1
WO2020150968A1 PCT/CN2019/073006 CN2019073006W WO2020150968A1 WO 2020150968 A1 WO2020150968 A1 WO 2020150968A1 CN 2019073006 W CN2019073006 W CN 2019073006W WO 2020150968 A1 WO2020150968 A1 WO 2020150968A1
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WIPO (PCT)
Prior art keywords
circuit
switch
capacitive touch
touch panel
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/073006
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English (en)
French (fr)
Inventor
陈超
贾琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to CN201980073492.8A priority Critical patent/CN113260964A/zh
Priority to PCT/CN2019/073006 priority patent/WO2020150968A1/zh
Publication of WO2020150968A1 publication Critical patent/WO2020150968A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters

Definitions

  • the embodiments of the present application relate to the field of wireless charging technology, and in particular, to a touch panel, a wireless charging component, and an electronic device.
  • a wireless charging receiving coil is set in the electronic device, and a charging board equipped with a wireless charging transmitter coil is energized through the coil of the charging board.
  • a magnetic field is formed near the charging board, and the coil of the electronic device generates an induced current in the magnetic field, thereby charging the electronic device.
  • the coil is generally placed on the touch screen or the device casing, which increases the volume of the electronic device.
  • the embodiments of the present application provide a touch panel, a wireless charging assembly, and an electronic device, which can realize wireless charging based on a touch screen, and avoid additional configuration of coils to increase the volume of the electronic device.
  • a touch panel includes: capacitive touch electrodes for sensing touch operations and coupling wireless current; a touch detection circuit, connected to the capacitive touch electrodes, for detecting the touch operations; and , A wireless charging circuit, connected to the capacitive touch electrode, for processing the wireless current.
  • a wireless charging assembly includes a charging base and the above-mentioned touch panel.
  • the charging base is used to generate a wireless current so that the capacitive touch electrode of the touch panel couples the radio current.
  • An electronic device includes the above-mentioned touch panel.
  • the touch panel provided by the embodiments of the present application, by multiplexing the capacitive touch electrodes as the receiving capacitance of the wireless charging circuit, wireless charging can be realized based on the touch screen, avoiding the additional configuration of coils and increasing the thickness.
  • the volume is reduced, and wireless charging is realized through electric field coupling, which avoids precise position matching and improves the flexibility of use.
  • the electric field coupling structure due to the electric field coupling structure, the electromagnetic interference to the surrounding environment is reduced.
  • FIG. 1 is a schematic structural diagram of a touch panel provided by one of the embodiments of the application.
  • 2a is a schematic diagram of the structure of capacitive touch electrodes of the touch panel of FIG. 1;
  • FIG. 2b is a schematic diagram of another structure of capacitive touch electrodes of the touch panel of FIG. 1;
  • 3a and 3b are schematic diagrams of the circuit structure of the touch panel in FIG. 1;
  • FIG. 4 is a schematic diagram of a wireless charging component provided by another embodiment of this application.
  • FIG. 5 is a schematic diagram of the structure of the charging base of the wireless charging assembly of FIG. 4;
  • FIG. 6 is a schematic diagram of the structure of the charging stand of the wireless charging assembly of FIG. 4;
  • FIG. 7 is a schematic structural diagram of an electronic device provided by another embodiment of the application.
  • the coil When wireless charging technology is applied to electronic devices with touch panels, the coil is generally placed on the touch screen or the device casing, and a charging board equipped with a wireless charging transmitter coil is configured.
  • the coil of the charging board is energized and the charging board A magnetic field is formed nearby, and the coil of the electronic device generates an induced current in the magnetic field to charge the electronic device.
  • this charging method requires an additional configuration of wireless charging coils in the electronic device, which increases the volume of the electronic device; and, wireless charging based on electromagnetic induction requires high position accuracy, and the transmitting coil and receiving coil need to be perfectly matched. To ensure the transmission of magnetic energy, any slight misalignment will completely lose the power transmission capability; at the same time, electromagnetic interference is large.
  • the embodiments of the present application provide a touch panel, a wireless charging assembly, and an electronic device, which can realize wireless charging based on a touch screen, avoiding an increase in the volume of the electronic device caused by additional configuration of coils, and wireless charging based on electric field coupling does not require Accurate position matching.
  • most of the electric flux of the electric field coupling structure is distributed between the coupling electrodes, and the electromagnetic interference to the surrounding environment is small.
  • the touch panel 10 provided by one embodiment of the present application includes: a capacitive touch electrode 11, a touch detection circuit 12, and a wireless charging circuit 13.
  • the touch detection circuit 12 and the wireless charging circuit 13 are respectively The capacitive touch electrode 11 is connected.
  • the capacitive touch electrode 11 is used for sensing touch operation and coupling wireless current
  • the touch detection circuit 12 is used for detecting touch operation
  • the wireless charging circuit 13 is used for processing wireless current.
  • the touch panel 10 may be flexible and thus bendable.
  • wireless charging can be realized based on the touch screen, avoiding additional configuration of coils, without increasing the thickness, reducing the volume, and through the electric field
  • the coupling mode realizes wireless charging, avoids precise position matching, and improves the flexibility of use.
  • the electromagnetic interference to the surrounding environment is reduced.
  • the capacitive touch electrodes 11 are used for sensing touch operations and coupling wireless currents.
  • the capacitive touch electrodes 11 can be equivalent to touch capacitors.
  • the touch operation can change the capacitance of the touch capacitor, so the capacitance of the capacitive touch electrode 11 is changed by the touch operation so that the capacitive touch electrode 11 senses the touch operation; when used to couple wireless current, the capacitive touch electrode 11 is close to the emitter plate that generates wireless current.
  • the capacitive touch electrode 11 and the emitter plate form a coupling capacitor.
  • the wireless current is transferred to the capacitive touch electrode 11 through the coupling capacitor, so that the capacitive touch electrode 11 couples the wireless current.
  • the touch panel 10 further includes a substrate 14, and the capacitive touch electrodes 11 are provided on the substrate 14.
  • the substrate 14 may be an array substrate 14 for driving a display, so that the touch panel 10 also has a display function.
  • the capacitive touch electrode 11 is a self-capacitive touch structure, as shown in FIG. 2a
  • the capacitive touch electrode 11 includes a plurality of electrode blocks 111, which are arranged on the substrate 14 in a matrix manner.
  • the capacitive touch electrode 11 can sense a touch operation.
  • the capacitive touch electrode 11 has a mutual capacitive touch structure, as shown in FIG.
  • the capacitive touch electrode 11 includes a plurality of capacitive sensing electrodes 112 and a plurality of capacitive driving electrodes 113.
  • the capacitance sensing electrode 112 and the capacitance driving electrode 113 are arranged on the substrate 14 in an intersection, for example, vertically arranged, and the capacitance sensing electrode 112 and the capacitance driving electrode 113 are insulated.
  • a driving signal is applied to the capacitive driving electrode 113, by detecting the change of the capacitance on the capacitive sensing electrode 112, the capacitive touch electrode 11 can sense a touch operation.
  • the capacitive touch electrode 11 may be made of a transparent conductive material, for example, transparent indium tin oxide (ITO), indium zinc oxide material processed by a thin film process.
  • ITO transparent indium tin oxide
  • the touch detection circuit 12 is connected to the capacitive touch electrode 11, and when the capacitive touch electrode 11 is used for sensing a touch operation, the touch detection circuit 12 detects the touch operation.
  • the touch detection circuit 12 includes: a charge and discharge electronic circuit 121 and a control sub-circuit 122.
  • the charge and discharge electronic circuit 121 is connected to the capacitive touch electrode 11, and the control sub-circuit 122 and the charge and discharge electronic circuit 121 connection.
  • the charging and discharging electronic circuit 121 is used to charge or discharge the capacitive touch electrode 11, and the control sub-circuit 122 is used to determine the touch operation according to the charging and discharging time of the capacitive touch electrode 11 twice. For example, the charging and discharging electronic circuit 121 continuously outputs a high level to the capacitive touch electrode 11 to charge the capacitive touch electrode 11.
  • the control sub-circuit 122 After the capacitive touch electrode 11 is fully charged, it starts to discharge to the control sub-circuit 122, and the control sub-circuit 122 according to the capacitance
  • the voltage at both ends of the touch electrode 11 when discharging calculates the discharge time of the capacitive touch electrode 11, and the control sub-circuit 122 calculates the charging time of the capacitive touch electrode 11 according to the discharge time of the capacitive touch electrode 11.
  • the control sub-circuit 122 can calculate the charge and discharge time of the capacitive touch electrode 11 each time. When the user outputs a touch operation, the touch capacitance of the capacitive touch electrode 11 changes, for example, becomes smaller. Therefore, the control sub-circuit 122 determines the touch operation according to the two adjacent charge and discharge times of the capacitive touch electrode 11.
  • control sub-circuit 122 includes: a comparison sub-circuit 1221 and a controller 1222.
  • the comparator circuit 1221 is connected to the charging and discharging electronic circuit 121, and the controller 1222 is connected to the comparator circuit 1221.
  • the comparison sub-circuit 1221 is used to receive the discharge voltage of the capacitive touch electrode 11, and generate a comparison signal according to the preset reference voltage and the discharge voltage.
  • the controller 1222 is used to calculate the charge and discharge time of the capacitive touch electrode 11 according to the comparison signal output by the comparison sub-circuit 1221.
  • the comparison sub-circuit 1221 receives the discharge voltage of the capacitive touch electrode 11, and generates a comparison signal according to the preset reference voltage and the discharge voltage.
  • the controller 1222 receives the discharge voltage output by the comparison sub-circuit 1221 to calculate the capacitance Charge and discharge time of the touch electrode 11.
  • the charging and discharging time of the capacitive touch electrode 11 changes, and the controller 1222 calculates the change in the charging and discharging time of the capacitive touch electrode 11, so that the touch detection circuit 12 determines the touch operation.
  • the charging and discharging electronic circuit 121 may include: a first switching tube T1 and a second switching tube T2.
  • the first end of the first switch tube T1 is used to input a driving signal
  • the second end of the first switch tube T1 and the first end of the second switch tube T2 are respectively connected to the capacitive touch electrode 11
  • the third terminal of the first switch tube T1 Terminal is connected to the third terminal of the second switch tube T2
  • the third terminal of the first switch tube T1 and the third terminal of the second switch tube T2 are used to input switching control signals
  • the second terminal of the second switch tube T2 Connect with the comparator circuit 1221.
  • the driving signal may be a sine wave signal, a square wave signal, etc., as long as the capacitive touch electrode 11 can be charged.
  • the switch control signal outputs high-level signals and low-level signals at preset time intervals. When the switch control signal is high, the first switch tube T1 is turned on and the second switch tube T2 is turned off; when the switch control signal is low, Usually, the first switching tube T1 is turned off, and the second switching tube T2 is turned on.
  • the first switching tube T1 may be an N-type transistor or a field effect tube
  • the second switching tube T2 may be a P-type transistor or a field effect tube; or, the first switching tube T1 may be a P-type transistor or a field effect tube.
  • the second switch tube T2 can be an N-type transistor or a field effect tube.
  • the first switch tube T1 and the second switch tube T2 may be thin film transistors (Thin Film Transistor, TFT), for example, may include low temperature polysilicon thin film transistors (Low Temperature Poly-Si Thin Film Transistor, LTP-Si TFT), Amorphous silicon TFT, polysilicon TFT, oxide semiconductor TFT, or organic TFT, etc.
  • TFT Thin Film Transistor
  • LTP-Si TFT Low Temperature Poly-Si Thin Film Transistor
  • Amorphous silicon TFT polysilicon TFT
  • oxide semiconductor TFT oxide semiconductor TFT
  • organic TFT organic TFT
  • the comparator circuit 1221 may include: a comparator U1 and a first capacitor C1.
  • the inverting input terminal of the comparator U1 is connected to the second terminal of the second switch tube T2, the non-inverting input terminal of the comparator U1 is grounded, and the first capacitor C1 is respectively connected to the inverting input terminal of the comparator U1 and the output of the comparator U1
  • the output terminal of the comparator U1 is connected to the controller 1222.
  • the controller 1222 may include a processor, an Application-Specific Integrated Circuit (ASIC) with a control processing function, a Field Programmable Gate Array (FPGA), a single-chip microcomputer, and the like.
  • the controller 1222 is connected to the output terminal of the comparator U1, so as to calculate the charge and discharge time of the capacitive touch electrode 11 according to the comparison signal output by the comparison sub-circuit 1221, and then calculate the charge and discharge time of the capacitive touch electrode 11 with the preset charge and discharge time Time to compare to determine touch operation. For example, if the charging and discharging time of the capacitive touch electrode 11 is different from the preset charging and discharging time, it is determined that there is a touch operation. If the charging and discharging time of the capacitive touch electrode 11 is the same as the preset charging and discharging time, it is determined that there is no touch. Control operation.
  • ASIC Application-Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the working process of the touch detection circuit 12 is roughly as follows: when there is no touch operation, when the switch control signal is at a high level, the first switch tube T1 is turned on, the second switch tube T2 is turned off, and the first switch tube T2 is turned off.
  • a switch tube T1 inputs a driving signal to charge the capacitive touch electrode 11.
  • the switch control signal is low, the first switch tube T1 is turned off, the second switch tube T2 is turned on, and the capacitive touch electrode 11 discharges.
  • the signal is input to the comparator U1 through the second switch tube T2.
  • the comparison sub-circuit 1221 receives the discharge voltage of the capacitive touch electrode 11 and generates a comparison signal according to the preset reference voltage and the discharge voltage.
  • the controller 1222 receives the comparison sub-circuit 1221 output discharge voltage to calculate the charging and discharging time of the capacitive touch electrode 11; when the capacitive touch electrode 11 has a touch operation, the capacitance of the capacitive touch electrode 11 decreases, and the charging time of the capacitive touch electrode 11 If it becomes shorter, the discharge time becomes shorter.
  • the controller 1222 calculates the change in the charge and discharge time of the capacitive touch electrode 11, so that the touch detection circuit 12 determines the touch operation.
  • the wireless charging circuit 13 is connected to the capacitive touch electrode 11 for processing the wireless current coupled by the capacitive touch electrode 11.
  • the wireless charging circuit 13 includes: a rectifier sub-circuit 131, a filtering sub-circuit 132, and an overvoltage protection sub-circuit 133.
  • the commutator circuit 131 is connected to the capacitive touch electrode 11
  • the filter sub circuit 132 is connected to the commutator circuit 131
  • the overvoltage protection sub circuit 133 is connected to the filter sub circuit 132.
  • the rectifier circuit 131 is used to rectify the wireless current coupled to the capacitive touch electrode 11
  • the filter sub-circuit 132 is used to filter the rectified wireless current
  • the overvoltage protection sub-circuit 133 is used to The voltage across the filter sub-circuit 132 is limited.
  • the rectifier circuit 131 includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, and a second capacitor C2.
  • the cathode of the first diode D1 is connected to the anode of the fourth diode D4, and the common connection end of the first diode D1 and the fourth diode D4 is connected to the capacitive touch electrode 11 to input wireless current
  • the cathode of the second diode D2 is connected to the anode of the third diode D3, the anode of the first diode D1 is connected to the anode of the second diode D2 and grounded, and the cathode of the fourth diode D4 is connected to The cathode of the third diode D3 is connected, and the second capacitor C2 is respectively connected to the common connection end of the first diode D1 and the fourth diode and the common connection end of the second diode D2 and the third
  • the filtering sub-circuit 132 includes: a first resistor R1 and a third capacitor C3.
  • One end of the first resistor R1 is connected to the common connection end of the fourth diode D4 and the third diode D3 for inputting the rectified wireless current, and one end of the third capacitor C3 is connected to the other end of the first resistor R1, The other end of the third capacitor C3 is grounded.
  • the overvoltage protection sub-circuit 133 includes: a voltage regulator tube DZ.
  • the positive pole of the voltage stabilizer DZ is grounded, and the negative pole of the voltage stabilizer DZ is connected to the other end of the first resistor R1 of the filter sub-circuit 132.
  • the overvoltage protection sub-circuit 133 may be omitted.
  • the touch panel 10 may further include: a mode switch 15.
  • the touch detection circuit 12 is connected to the capacitive touch electrode 11 through the mode switch 15, and the wireless charging circuit 13 is connected to the capacitive touch electrode 11 through the mode switch 15.
  • the mode switch 15 is provided with: a first switch input terminal, a first switch output terminal, and a second switch output terminal.
  • the first switch input terminal is connected to the capacitive touch electrode 11, and the first switch output terminal is connected to the first switch tube.
  • the second terminal of T1 is connected to the first terminal of the second switch tube T2, and the second switch output terminal is connected to the common connection terminal of the first diode D1 and the fourth diode D4.
  • the touch detection circuit 12 When the touch detection mode is used, the first switch input terminal and the first switch output terminal are electrically connected, the touch detection circuit 12 is connected to the capacitive touch electrode 11, and the wireless charging circuit 13 is disconnected from the capacitive touch electrode 11; When using the wireless charging mode, the first switch input terminal and the second switch output terminal are electrically connected, the touch detection circuit 12 is disconnected from the capacitive touch electrode 11, and the wireless charging circuit 13 is connected to the capacitive touch electrode 11.
  • the mode switch 15 can be automatic or manual.
  • the mode switch 15 is an automatic switch, the switch can be automatically switched according to the status information of the device.
  • the status information of the device may include the system status information of the device and/or the external electric field information of the device.
  • the status information of the device it is determined whether the device is in the standby state. If the device is in the standby state, it will switch to the wireless charging mode. In the standby state, switch to touch detection mode.
  • the touch panel 10 may further include: a flexible circuit board (not shown).
  • the flexible circuit board is arranged on one side of the array substrate 14, and the touch detection circuit 12 and the wireless charging circuit 13 are both arranged on the flexible circuit board, so that the touch panel 10 can be bent.
  • wireless charging can be realized based on the touch screen, avoiding additional configuration of coils, without increasing the thickness, reducing the volume, and through the electric field
  • the coupling mode realizes wireless charging, avoids precise position matching, and improves the flexibility of use.
  • the electromagnetic interference to the surrounding environment is reduced.
  • the wireless charging assembly 100 provided by another embodiment of the present application includes a touch panel 10 and a charging stand 20.
  • the charging stand 20 is used to generate wireless current so that the capacitive touch electrode 11 of the touch panel 10 couples the wireless current.
  • the charging base 20 includes: an emitter plate 21 and a transmitting circuit 22.
  • the transmitter circuit 22 is connected to the transmitter plate 21, and the transmitter circuit 22 is used to drive the transmitter plate 21 to generate a wireless current, so that the capacitive touch electrode 11 of the touch panel 10 couples the wireless current.
  • the emitter plate 21 is a capacitor composed of two plates, which can generate a wireless current according to an alternating current signal.
  • the number of emitter plates 21 can be multiple, and the multiple emitter plates 21 are arranged in a matrix.
  • a wireless current is coupled to the touch panel 10, an emitter plate 21 and the capacitive touch electrode 11 of the touch panel 10
  • An electrode block 111 faces each other.
  • a control switch 211 is connected behind each emitter plate 21, and the emitter plate 21 is connected to the transmitting circuit 22 through the control switch 211.
  • the switch 211 By controlling the switch 211 to select the best positive and negative emitter plate 21 for charging, the cross-coupling of the electrode plates can be greatly reduced, and the wireless charging assembly 100 can realize high-efficiency wireless charging without being completely aligned. It avoids precise position matching and improves the flexibility of use.
  • the charging base 20 further includes: a charging base housing 23.
  • the emitter plate 21 is embedded in the charging base housing 23.
  • the transmitting circuit 22 includes: a power supply 221, a boosting sub-circuit 222, an inverter sub-circuit 223, and a driving control sub-circuit 224.
  • the power supply 221 is used to output a power supply signal.
  • the power supply signal may be a power supply voltage signal.
  • the boosting sub-circuit 222 is connected to the power supply 221, and the boosting sub-circuit 222 is used to boost the power supply signal output by the power supply 221 and output the boosted signal.
  • the boosted voltage signal can be a boosted voltage signal.
  • the inverter sub-circuit 223 is connected to the boost sub-circuit 222, and the inverter sub-circuit 223 is used to convert the boost signal output by the boost sub-circuit 222 into an alternating current signal.
  • the driving control sub-circuit 224 is respectively connected to the inverter sub-circuit 223 and the emitter plate 21. The driving control sub-circuit 224 is used to transmit an alternating current signal to the emitter plate 21 so that the emitter plate 21 generates a wireless current according to the alternating current signal.
  • the charging stand 20 can be an independent component, or can be installed in an electronic device as a module.
  • the touch panel 10 is provided on a mobile phone and the charging stand 20 is provided on the host computer, the mobile phone is placed on the host computer, and the touch panel 10 on the mobile phone can be wirelessly charged through the charging stand 20 in the host computer.
  • the charging base 20 wirelessly charges the touch panel 10 through electric field coupling
  • the transmitting substrate 21 of the charging base 20 serves as the transmitting end
  • the capacitive touch electrode 11 of the touch panel 10 is used as the receiving end.
  • the coupling between the transmitting end and the receiving end is equivalent to a capacitor, so as to achieve the function of transmitting electric energy.
  • wireless charging through electric field coupling has great flexibility in position.
  • the transmitter and receiver are allowed to be placed in any direction, and do not necessarily need to be very precise, and when the transmitter is far away At the receiving end, high-efficiency and relatively flat energy transmission can still be maintained, and the electric field used as the energy carrier in the capacitive coupling configuration will not have any large current, and there is no heat generation problem in the coupling region, which can greatly reduce heat generation.
  • the working process of the wireless charging assembly 100 is roughly as follows: after the touch panel 10 is placed on the charging base 20, the mode switch 15 is triggered to switch, so that the wireless charging circuit 13 is connected to the capacitive touch electrode 11.
  • the transmitter circuit 22 of the charging base 20 starts to work, the power supply 221 outputs a supply voltage signal, the boost sub-circuit 222 boosts the supply voltage signal, and outputs a boosted voltage signal, and the inverter sub-circuit 223 converts the DC signal into an AC signal, Output AC current, drive control sub-circuit 224 transmits AC current to emitter plate 21, emitter plate 21 generates wireless current according to the AC current, capacitive touch electrode 11 of touch panel 10 and emitter plate 21 form a coupling capacitor, and the capacitive touch The control electrode 11 obtains a wireless current through electric field coupling. After the wireless charging current 13 of the touch panel 10 processes the wireless current, wireless charging is performed.
  • the charging stand 20 is used to generate wireless current so that the capacitive touch electrode 11 of the touch panel 10 couples the wireless current, and the touch panel 10 multiplexes the capacitive touch electrode 11 into the wireless charging circuit 13
  • the receiving capacitor can realize wireless charging based on the touch screen, avoid the additional configuration of coils, do not increase the thickness, reduce the volume, and realize the wireless charging through the electric field coupling method, avoiding accurate position matching, improving the flexibility of use, and , Due to the electric field coupling structure, the electromagnetic interference to the surrounding environment is reduced.
  • an electronic device 300 provided by another embodiment of the present application includes a touch panel 10.
  • the electronic device 300 exists in various forms, including but not limited to: smart phones, functional phones, tablet computers, computer touch panels, vehicle display devices, video players, handheld game consoles, e-books, and so on.
  • Figure 7 takes a mobile phone as an example for illustration.
  • the electronic device 300 may further include: a device battery 310.
  • the device battery 310 is connected to the output end of the wireless charging circuit 13 of the touch panel 10, and the wireless charging circuit 13 can charge the device battery 310.
  • the electronic device 300 can achieve both the touch function and the wireless charging function, and avoid The additional configuration of coils does not increase the thickness, reduces the volume, and realizes wireless charging through electric field coupling, which avoids precise position matching and improves the flexibility of use. At the same time, due to the electric field coupling structure, it reduces the impact on the surrounding environment. Electromagnetic interference.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本申请公开了一种触控面板，包括：电容触控电极，用于感应触控操作以及耦合无线电流；触控侦测电路，与所述电容触控电极连接，用于侦测所述触控操作；以及，无线充电电路，与所述电容触控电极连接，用于处理所述无线电流。通过将电容触控电极复用为无线充电电路的接收电容，能够基于触摸屏实现无线充电，避免额外配置线圈导致电子设备的体积增大。

Description

触控面板、无线充电组件以及电子设备 技术领域
本申请实施例涉及无线充电技术领域，尤其涉及一种触控面板、无线充电组件以及电子设备。
背景技术
随着电子设备功能的不断提升，电子设备的功耗也越来越大，用户对电子设备充电的频率也随着增加。一般地，主要采用有线方式为电子设备充电，但是，在某些时刻下，若没有充电线，则无法对电子设备进行充电。因此，无线充电技术由于其便利性，在电子设备中被广泛应用。
市场上的无线充电的电子设备，大多基于技术较成熟的电磁感应式的方案，例如，在电子设备中设置无线充电接收线圈，并配置有无线充电发射线圈的充电板，通过充电板的线圈通电，在充电板附近形成磁场，电子设备的线圈在该磁场中产生感应电流，从而对电子设备进行充电。
当在具有触控面板的电子设备应用无线充电技术时，一般将线圈设贴在触摸屏或者设备壳体上，这种方式增加了电子设备的体积。
发明内容
本申请实施例提供一种触控面板、无线充电组件以及电子设备，能够基于触摸屏实现无线充电，避免额外配置线圈导致电子设备的体积增大。
本申请实施例解决其技术问题提供以下技术方案：
一种触控面板，包括：电容触控电极，用于感应触控操作以及耦合无线电流；触控侦测电路，与所述电容触控电极连接，用于侦测所述触控操作；以及，无线充电电路，与所述电容触控电极连接，用于处理所述无线电流。
本申请实施例解决其技术问题还提供以下技术方案：
一种无线充电组件，包括充电座和上述的触控面板，所述充电座用于产生无线电流，以使所述触控面板的电容触控电极耦合所述无线电 流。
本申请实施例解决其技术问题还提供以下技术方案：
一种电子设备，包括上述的触控面板。
与现有技术相比较，在本申请实施例提供的触控面板，通过将电容触控电极复用为无线充电电路的接收电容，能够基于触摸屏实现无线充电，避免额外配置线圈，不增加厚度，减小了体积，并且，通过电场耦合方式实现无线充电，避免了精确的位置匹配，提高了使用的灵活性，同时，由于电场耦合结构，降低了对周围环境的电磁干扰。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍。显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请其中一实施例提供的触控面板的结构示意图；
图2a为图1的触控面板的电容触控电极的结构示意图；
图2b为图1的触控面板的电容触控电极的另一种结构示意图；
图3a和图3b为图1的触控面板的电路结构示意图；
图4为本申请又一实施例提供的无线充电组件示意图；
图5为图4的无线充电组件的充电座的结构示意图；
图6为图4的无线充电组件的充电座的结构示意图；
图7为本申请另一实施例提供的电子设备的结构示意图。
具体实施方式
为了便于理解本申请，下面结合附图和具体实施例，对本申请进行更详细的说明。需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”、“内”、“外”以及类似的表述只是为了说明 的目的，并且仅表达实质上的位置关系，例如对于“垂直的”，如果某位置关系因为了实现某目的的缘故并非严格垂直，但实质上是垂直的，或者利用了垂直的特性，则属于本说明书所述“垂直的”范畴。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是用于限制本申请。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
此外，下面所描述的本申请不同实施例中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
当在具有触控面板的电子设备应用无线充电技术时，一般将线圈设贴在触摸屏或者设备壳体上，并配置设置有无线充电发射线圈的充电板，通过充电板的线圈通电，在充电板附近形成磁场，电子设备的线圈在该磁场中产生感应电流，从而对电子设备进行充电。
然而，这种充电方式需要在电子设备中额外配置无线充电线圈，增加了电子设备的体积；并且，基于电磁感应方式的无线充电对位置的精度要求高，发射线圈和接收线圈需要完美匹配，以保证磁能的传输，任何稍微的不对齐都会完全丢失功率传输能力；同时，电磁干扰大。
基于此，本申请实施例提供一种触控面板、无线充电组件以及电子设备，能够基于触摸屏实现无线充电，避免额外配置线圈导致电子设备的体积增大，并且，基于电场耦合方式的无线充电无需精确的位置匹配，同时，电场耦合结构的绝大部分电通量均分布在耦合电极之间，对周围环境的电磁干扰很小。
请参阅图1，本申请其中一实施例提供的触控面板10包括：电容触控电极11、触控侦测电路12和无线充电电路13，触控侦测电路12、无线充电电路13分别与电容触控电极11连接。
电容触控电极11用于感应触控操作以及耦合无线电流，触控侦测电路12用于侦测触控操作，无线充电电路13用于处理无线电流。
其中，触控面板10可以为柔性的，从而可弯曲。
在本申请实施例中，通过将电容触控电极11复用为无线充电电路13的接收电容，能够基于触摸屏实现无线充电，避免额外配置线圈，不增加厚度，减小了体积，并且，通过电场耦合方式实现无线充电，避免了精确的位置匹配，提高了使用的灵活性，同时，由于电场耦合结构，降低了对周围环境的电磁干扰。
电容触控电极11用于感应触控操作以及耦合无线电流，其中，当用于感应触控操作时，若对电容触控电极11进行触摸操作，由于电容触控电极11可等效为触摸电容，触摸操作可改变触摸电容的电容量，于是，通过触摸操作改变电容触控电极11的电容量从而使得电容触控电极11感应到触控操作；当用于耦合无线电流时，电容触控电极11与产生无线电流的发射极板相靠近，电容触控电极11与发射极板形成耦合电容，无线电流通过耦合电容传递到电容触控电极11，从而电容触控电极11耦合无线电流。
可选地，请一并参阅图2a和图2b，触控面板10还包括基板14，电容触控电极11设于基板14上。基板14可以为阵列基板14，该阵列基板14用于驱动显示，从而触控面板10还具有显示功能。当电容触控电极11为自容式触控结构时，如图2a所示，电容触控电极11包括多个电极块111，多个电极块111以矩阵方式设于基板14上，通过侦测电极块111上电容的变化，则电容触控电极11可感应到触控操作。当电容触控电极11为互容式触控结构时，如图2b所示，电容触控电极11包括多个电容感应电极112和多个电容驱动电极113。电容感应电极112和电容驱动电极113交叉设置于基板14上，例如垂直设置，并且，电容感应电极112和电容驱动电极113绝缘。当向电容驱动电极113施加驱动信号，通过侦测电容感应电极112上电容的变化，则电容触控电极11可感应到触控操作。
可选地，电容触控电极11可以由透明的导电材料制备而成，例如，采用薄膜工艺加工得到的透明的氧化铟锡(Indium Tin Oxides，ITO)、铟锌氧化物材料等等。
触控侦测电路12与电容触控电极11连接，当电容触控电极11用于感应触控操作时，触控侦测电路12侦测触控操作。
具体地，请参阅图3a，触控侦测电路12包括：充放电子电路121和控制子电路122，充放电子电路121与电容触控电极11连接，控制子电路122与充放电子电路121连接。
其中，充放电子电路121用于为电容触控电极11充电或放电，控制子电路122用于根据电容触控电极11相邻两次的充放电时间，确定触控操作。例如，充放电子电路121向电容触控电极11持续输出高电平，为电容触控电极11充电，电容触控电极11充满电后，开始向控制子电路122放电，控制子电路122根据电容触控电极11放电时的两端电压计算出电容触控电极11的放电时间，并且，控制子电路122根据电容触控电极11的放电时间，计算出电容触控电极11的充电时间，于是，控制子电路122便可以计算出电容触控电极11每次的充放电时间。当用户输出触摸操作时，电容触控电极11的触摸电容发生改变，例如变小，于是，控制子电路122根据电容触控电极11相邻两次的充放电时间，确定触控操作。
其中，控制子电路122包括：比较子电路1221和控制器1222。比较子电路1221与充放电子电路121连接，控制器1222与比较子电路1221连接。
其中，比较子电路1221用于接收电容触控电极11的放电电压，并根据预设基准电压与放电电压，产生比较信号。控制器1222用于根据比较子电路1221输出的比较信号，计算出电容触控电极11的充放电时间。例如，比较子电路1221接收到电容触控电极11的放电电压，并根据预设基准电压与所述放电电压，产生比较信号，控制器1222接收比较子电路1221输出的放电电压，从而计算出电容触控电极11的充放电时间。当用户输出触摸操作时，电容触控电极11的充放电时间改变，控制器1222计算得到电容触控电极11的充放电时间变化，从而触控侦测电路12确定触控操作。
具体地，请一并参阅图3b，充放电子电路121可以包括：第一开关 管T1和第二开关管T2。第一开关管T1的第一端用于输入驱动信号，第一开关管T1的第二端、第二开关管T2的第一端分别连接电容触控电极11，第一开关管T1的第三端与第二开关管T2的第三端连接，第一开关管T1的第三端与所述第二开关管T2的第三端用于输入开关控制信号，第二开关管T2的第二端与比较子电路1221连接。驱动信号可以为正弦波信号、方波信号等等，只要能够对电容触控电极11进行充电即可。开关控制信号按照预设时间间隔输出高电平信号和低电平信号，当开关控制信号为高电平时，第一开关管T1导通，第二开关管T2截止；当开关控制信号为低电平时，第一开关管T1截止，第二开关管T2导通。
可选地，第一开关管T1可以为N型晶体管或场效应管，第二开关管T2可以为P型晶体管或场效应管；或者，第一开关管T1可以为P型晶体管或场效应管，第二开关管T2可以为N型晶体管或场效应管。
可选地，第一开关管T1和第二开关管T2可以为薄膜晶体管(Thin Film Transistor，TFT)，例如可以包括低温多晶硅薄膜晶体管(Low Temperature Poly-Si Thin Film Transistor，LTP-Si TFT)、非晶硅TFT、多晶硅TFT、氧化物半导体TFT、或有机TFT等等。
其中，比较子电路1221可以包括：比较器U1和第一电容C1。比较器U1的反相输入端与第二开关管T2的第二端连接，比较器U1的正相输入端接地，第一电容C1分别连接比较器U1的反相输入端和比较器U1的输出端，比较器U1的输出端与控制器1222连接。当第二开关管T2导通时，电容触控电极11进行放电，比较器U1的反相输入端输入电容触控电极11的放电电压。
其中，控制器1222可以包括处理器、具有控制处理功能的专用集成电路(Application-Specific Integrated Circuit，ASIC)、现场可编辑门阵列(Field Programmable Gate Array，FPGA)、单片机等。控制器1222与比较器U1的输出端连接，从而根据比较子电路1221输出的比较信号，计算电容触控电极11的充放电时间，进而将电容触控电极11的充放电时间与预设充放电时间进行比较，以确定触控操作。例如，若电容触控电极11的充放电时间与预设充放电时间不同，则确定存在触控操作， 若电容触控电极11的充放电时间与预设充放电时间相同，则确定不存在触控操作。
在本实施例中，触控侦测电路12的工作过程大致为：当无触控操作时，当开关控制信号为高电平时，第一开关管T1导通，第二开关管T2截止，第一开关管T1输入驱动信号，从而对电容触控电极11充电，当开关控制信号为低电平时，第一开关管T1截止，第二开关管T2导通，电容触控电极11进行放电，电信号经过第二开关管T2输入比较器U1，比较子电路1221接收到电容触控电极11的放电电压，并根据预设基准电压与所述放电电压，产生比较信号，控制器1222接收比较子电路1221输出的放电电压，从而计算出电容触控电极11的充放电时间；当电容触控电极11存在触控操作时，电容触控电极11的电容量减小，电容触控电极11的充电时间变短，放电时间也变短，控制器1222计算得到电容触控电极11的充放电时间变化，从而触控侦测电路12确定触控操作。
无线充电电路13与电容触控电极11连接，用于处理电容触控电极11耦合的无线电流。
具体地，请参阅图3a，无线充电电路13包括：整流子电路131、滤波子电路132和过压保护子电路133。整流子电路131与电容触控电极11连接，滤波子电路132与整流子电路131连接，过压保护子电路133与滤波子电路132连接。在本实施例中，整流子电路131用于对电容触控电极11耦合的无线电流作整流处理，滤波子电路132用于对整流后的无线电流作滤波处理，过压保护子电路133用于限制滤波子电路132的两端电压。
其中，请一并参阅图3b，整流子电路131包括：第一二极管D1、第二二极管D2、第三二极管D3、第四二极管D4和第二电容C2。第一二极管D1的负极与第四二极管D4的正极连接，并且，第一二极管D1与第四二极管D4的共同连接端与电容触控电极11连接，以输入无线电流，第二二极管D2的负极与第三二极管D3的正极连接，第一二极管D1的正极与第二二极管D2的正极连接并接地，第四二极管D4的负极与第三二极管D3的负极连接，第二电容C2分别连接第一二极管D1与 第四二极管的共同连接端和第二二极管D2与第三二极管D3的共同连接端。
其中，滤波子电路132包括：第一电阻R1和第三电容C3。第一电阻R1的一端与第四二极管D4与第三二极管D3共同连接端连接，用于输入整流后的无线电流，第三电容C3的一端与第一电阻R1的另一端连接，第三电容C3的另一端接地。
其中，过压保护子电路133包括：稳压管DZ。稳压管DZ的正极接地，稳压管DZ的负极与滤波子电路132的第一电阻R1的另一端连接。
可选地，在一些其他实施例中，过压保护子电路133可以省略。
可选地，在一些其他实施例中，如图3a和图3b所示，触控面板10还可以包括：模式切换开关15。触控侦测电路12通过模式切换开关15与电容触控电极11连接，无线充电电路13通过模式切换开关15与电容触控电极11连接。其中，模式切换开关15设有：第一开关输入端、第一开关输出端和第二开关输出端，第一开关输入端与电容触控电极11连接，第一开关输出端与第一开关管T1的第二端和第二开关管T2的第一端连接，第二开关输出端与第一二极管D1与第四二极管D4的共同连接端连接。当使用触控侦测模式时，第一开关输入端与第一开关输出端电导通，触控侦测电路12与电容触控电极11连通，无线充电电路13与电容触控电极11断开；当使用无线充电模式时，第一开关输入端与第二开关输出端电导通，触控侦测电路12与电容触控电极11断开，无线充电电路13与电容触控电极11连通。
其中，模式切换开关15可以为自动或者手动的。当模式切换开关15为自动开关时，可根据设备的状态信息自动切换开关。例如，设备的状态信息可以包括设备的系统状态信息和/或设备的外部电场信息，根据设备的状态信息，判断设备是否处于待机状态，若设备处于待机状态，则切换到无线充电模式，若不处于待机状态，则切换到触控侦测模式。
可选地，在一些其他实施例中，触控面板10还可以包括：柔性电路板(图未示)。柔性电路板设于阵列基板14的一侧，触控侦测电路12、无线充电电路13均设置柔性电路板上，以使得触控面板10可弯曲。
在本申请实施例中，通过将电容触控电极11复用为无线充电电路13的接收电容，能够基于触摸屏实现无线充电，避免额外配置线圈，不增加厚度，减小了体积，并且，通过电场耦合方式实现无线充电，避免了精确的位置匹配，提高了使用的灵活性，同时，由于电场耦合结构，降低了对周围环境的电磁干扰。
请参阅图4，本申请又一实施例提供的无线充电组件100包括：触控面板10和充电座20。充电座20用于产生无线电流，以使触控面板10的电容触控电极11耦合无线电流。
具体地，请一并参阅图5，充电座20包括：发射极板21和发射电路22。发射电路22与发射极板21连接，发射电路22用于驱动发射极板21产生无线电流，以使触控面板10的电容触控电极11耦合无线电流。
其中，发射极板21为由两块极板组成的电容，能够根据交流电信号产生无线电流。发射极板21的数量可以为多个，多个发射极板21以矩阵形式排列，当对触控面板10耦合无线电流时，一发射极板21与触控面板10的电容触控电极11的一电极块111相对。可选地，请参阅图6，每个发射极板21后连接有控制开关211，发射极板21通过控制开关211与发射电路22连接。通过控制开关211选择最佳正负极的发射极板21进行充电，可以极大地减少电极板交叉耦合的情况，保证无线充电组件100在未完全对准的情况下能够实现高效率的无线充电，避免了精确的位置匹配，提高了使用的灵活性。
可选地，请再参阅图4，充电座20还包括：充电座壳体23。发射极板21嵌设于充电座壳体23。
其中，请再参阅图5，发射电路22包括：供电电源221、升压子电路222、逆变子电路223和驱动控制子电路224。供电电源221用于输出供电信号。其中，供电信号可以为供电电压信号。升压子电路222与供电电源221连接，升压子电路222用于对供电电源221输出的供电信号进行升压，并输出升压电信号。其中，升压电信号可以为升压电压信 号。逆变子电路223与升压子电路222连接，逆变子电路223用于将升压子电路222输出的升压电信号转换为交流电信号。驱动控制子电路224分别与逆变子电路223、发射极板21连接，驱动控制子电路224用于向发射极板21传输交流电信号，以使发射极板21根据交流电信号产生无线电流。
需要说明的是，充电座20可以为独立的组件，也可以作为一个模块设置于电子设备中。例如，当触控面板10设于手机上，充电座20设于电脑主机上，则将手机置于电脑主机上，能够通过电脑主机内的充电座20对手机上的触摸面板10进行无线充电。
需要说明的是，当充电座20对触控面板10通过电场耦合方式进行无线充电时，充电座20的发射基板21作为发射端，触控面板10的电容触控电极11作为接收端，当对发射端输入交流电时，发射端和接收端耦合相当于一个电容，从而达到传输电能的作用。通过电场耦合方式进行的无线充电，与电磁感应方式相比，在位置上具有很大的灵活性，发射端与接收端允许以任何方向摆放，不一定需要很精确，并且，当发射端远离接收端时，仍能够保持高效率并且相对平坦的能量传输，而且，作为电容耦合配置中能量载体的电场不会有任何较大的电流，耦合区不存在发热问题，能够极大地减少发热。
在本实施例中，无线充电组件100的工作过程大致为：将触控面板10置于充电座20上后，触发模式切换开关15进行切换，使无线充电电路13与电容触控电极11连通，充电座20的发射电路22开始工作，供电电源221输出供电电压信号，升压子电路222对供电电压信号进行升压，输出升压电压信号，逆变子电路223将直流信号转换成交流信号，输出交流电流，驱动控制子电路224向发射极板21传输交流电流，发射极板21根据交流电流产生无线电流，触控面板10的电容触控电极11与发射极板21形成耦合电容，电容触控电极11通过电场耦合得到无线电流，在触控面板10的无线充电电流13对无线电流进行处理后，从而进行无线充电。
在本申请实施例中，通过充电座20用于产生无线电流，以使触控 面板10的电容触控电极11耦合无线电流，触控面板10将电容触控电极11复用为无线充电电路13的接收电容，能够基于触摸屏实现无线充电，避免额外配置线圈，不增加厚度，减小了体积，并且，通过电场耦合方式实现无线充电，避免了精确的位置匹配，提高了使用的灵活性，同时，由于电场耦合结构，降低了对周围环境的电磁干扰。
请参阅图7，本申请另一实施例提供的电子设备300包括：触控面板10。
其中，电子设备300以多种形式存在，包括但不限于：智能手机、功能性手机、平板电脑、电脑触控板、车载显示设备、视频播放器、掌上游戏机、电子书等等。图7中以手机为例举例说明。
可选地，电子设备300还可以包括：设备电池310。设备电池310与触控面板10的无线充电电路13的输出端连接，无线充电电路13可对设备电池310进行充电。
在本申请实施例中，通过将触控面板10的电容触控电极11复用为无线充电电路13的接收电容，使电子设备300既能实现触控功能、又能实现无线充电功能，还避免额外配置线圈，不增加厚度，减小了体积，并且，通过电场耦合方式实现无线充电，避免了精确的位置匹配，提高了使用的灵活性，同时，由于电场耦合结构，降低了对周围环境的电磁干扰。
本领域技术人员可以理解，本说明书中各实施例所描述工艺及材料仅为示例性，本申请实施例可以使用未来开发的适用于本申请的任何工艺或材料。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；在本申请的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本申请的不同方面的许多其它变化，为了简明，它们没有在细节中提供；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改， 或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (18)

  1. 一种触控面板，其特征在于，包括：
    电容触控电极，用于感应触控操作以及耦合无线电流；
    触控侦测电路，与所述电容触控电极连接，用于侦测所述触控操作；以及，
    无线充电电路，与所述电容触控电极连接，用于处理所述无线电流。
  2. 根据权利要求1所述的触控面板，其特征在于，所述触控侦测电路包括：
    充放电子电路，与所述电容触控电极连接，用于为所述电容触控电极充电或放电；
    控制子电路，与所述充放电子电路连接，用于根据所述电容触控电极的充放电时间，确定所述触控操作。
  3. 根据权利要求2所述的触控面板，其特征在于，所述控制子电路包括：
    比较子电路，与所述充放电子电路连接，用于接收所述电容触控电极的放电电压，并根据预设基准电压与所述放电电压，产生比较信号；
    控制器，与所述比较子电路连接，用于根据所述比较信号，计算出所述电容触控电极的充放电时间。
  4. 根据权利要求3所述的触控面板，其特征在于，所述充放电子电路包括：第一开关管和第二开关管；
    所述第一开关管的第一端用于输入驱动信号，所述第一开关管的第二端、所述第二开关管的第一端分别连接所述电容触控电极，所述第一开关管的第三端与所述第二开关管的第三端连接，所述第一开关管的第三端与所述第二开关管的第三端用于输入开关控制信号，所述第二开关管的第二端与所述比较子电路连接；
    其中，当所述开关控制信号为高电平时，所述第一开关管导通，所 述第二开关管截止；当所述开关控制信号为低电平时，所述第一开关管截止，所述第二开关管导通。
  5. 根据权利要求4所述的触控面板，其特征在于，所述比较子电路包括：比较器和第一电容；
    所述比较器的反相输入端与所述第二开关管的第二端连接，所述比较器的正相输入端接地，所述第一电容分别连接所述比较器的反相输入端和所述比较器的输出端，所述比较器的输出端与所述控制器连接。
  6. 根据权利要求4所述的触控面板，其特征在于，所述第一开关管或所述第二开关管包括薄膜晶体管。
  7. 根据权利要求1所述的触控面板，其特征在于，所述无线充电电路包括：
    整流子电路，与所述电容触控电极连接，用于对所述电容触控电极耦合的所述无线电流作整流处理；
    滤波子电路，与所述整流子电路连接，用于对整流后的所述无线电流作滤波处理。
  8. 根据权利要求7所述的触控面板，其特征在于，所述无线充电电路还包括：
    过压保护子电路，与所述滤波子电路连接，用于限制所述滤波子电路的两端电压。
  9. 根据权利要求8所述的触控面板，其特征在于，所述过压保护子电路包括：稳压管，所述稳压管的正极接地，所述稳压管的负极与所述滤波子电路连接。
  10. 根据权利要求7所述的触控面板，其特征在于，所述整流子电路包括：第一二极管、第二二极管、第三二极管、第四二极管和第二电 容；
    所述第一二极管的负极与所述第四二极管的正极连接，所述第二二极管的负极与所述第三二极管的正极连接，所述第一二极管的正极与所述第二二极管的正极连接并接地，所述第四二极管的负极与所述第三二极管的负极连接，所述第二电容分别连接所述第一二极管与所述第四二极管的共同连接端和所述第二二极管与所述第三二极管的共同连接端。
  11. 根据权利要求7所述的触控面板，其特征在于，所述滤波子电路包括：第一电阻和第三电容；
    所述第一电阻的一端用于输入整流后的所述无线电流，所述第三电容的一端与所述第一电阻的另一端连接，所述第三电容的另一端接地。
  12. 根据权利要求1-11任一项所述的触控面板，其特征在于，所述触控面板还包括：模式切换开关；
    所述模式切换开关设有：第一开关输入端、第一开关输出端和第二开关输出端，所述第一开关输入端与所述电容触控电极连接，所述第一开关输出端与所述触控侦测电路连接，所述第二开关输出端与所述无线充电电路连接，当所述第一开关输入端与所述第一开关输出端电导通时，所述电容触控电极与所述触控侦测电路电连接，当所述第一开关输入端与所述第二开关输出端电导通时，所述电容触控电极与所述无线充电电路电连接。
  13. 根据权利要求12所述的触控面板，其特征在于，所述触控面板还包括基板，所述电容触控电极设于所述基板上。
  14. 一种无线充电组件，其特征在于，包括充电座和权利要求1至13任一项所述的触控面板，所述充电座用于产生无线电流，以使所述触控面板的电容触控电极耦合所述无线电流。
  15. 根据权利要求14所述的无线充电组件，其特征在于，所述充 电座包括：
    发射极板；
    发射电路，与所述发射极板连接，用于驱动所述发射极板产生无线电流，以使所述触控面板的电容触控电极耦合所述无线电流。
  16. 根据权利要求15所述的无线充电组件，其特征在于，所述发射电路包括：
    供电电源，用于输出供电信号；
    升压子电路，与所述供电电源连接，用于对所述供电信号进行升压，并输出升压电信号；
    逆变子电路，与所述升压子电路连接，用于将所述升压电信号转换为交流电信号；
    驱动控制子电路，分别与所述逆变子电路、所述发射极板连接，用于向所述发射极板传输所述交流电信号，以使所述发射极板根据所述交流电信号产生所述无线电流。
  17. 根据权利要求14-16任一项所述的无线充电组件，其特征在于，所述充电座还包括：充电座壳体；
    所述发射极板的数量有多个，多个所述发射极板以矩阵形式设于所述充电器壳体。
  18. 一种电子设备，其特征在于，包括权利要求1-13任一项所述的触控面板。
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