CN105762782B - A kind of electronic equipment and electrostatic release method - Google Patents

Abstract

The invention provides an electronic device and an electrostatic discharge method. The electronic equipment includes: an integrated circuit, a first functional module, and a second functional module. The integrated circuit includes: a first signal output interface shared by the first functional module and the second functional module. The first functional module includes: a first signal input interface for connecting to the first signal output interface. The electronic device also includes: a detection unit for detecting whether there is static electricity in the first functional module; a circuit selection unit for disconnecting the link between the first signal output interface and the first signal input interface if there is static electricity in the first functional module circuit, and connect the first signal input interface to the ground voltage. In the present invention, after the static electricity occurs in the functional module receiving the public signal, the static discharge for the public signal can be performed on the functional module alone, since the public signal output from the integrated circuit side is not changed, so it will not affect the reception to the integrated circuit. The work of other functional modules of this common signal.

Description

An electronic device and electrostatic discharge method

technical field

The invention relates to the electrical field of integrated circuits, in particular to an electronic device and an electrostatic discharge method.

Background technique

In current electronic equipment, integrated circuit ICs may generate static electricity when they come into contact with human body or machines, no matter in the process of manufacturing, testing or use. When there is static electricity in the functional modules, abnormal operation may occur. For example, after the static electricity occurs in the display module of the display device, it will cause the screen to appear blurry or black screen and other problems. Because this defect can seriously affect the user experience, it must be resolved.

In the prior art, the control IC can perform power-off processing on the interface that outputs signals to the functional modules through the check mode of the ESD software, so that the functional modules can discharge static electricity. However, in the current electronic equipment, there may be multiple functional modules that multiplex a common signal on the IC. When static electricity occurs in one of the functional modules, the voltage of the common signal of the IC will be powered off, which will cause other access to the common signal. The function module of the function is interrupted. Obviously, users cannot accept the phenomenon that their smart terminal equipment is paralyzed due to the discharge of static electricity.

Contents of the invention

The purpose of the present invention is to provide a solution capable of performing electrostatic discharge on public signals received by functional modules.

In order to achieve the purpose of the above invention, on the one hand, an embodiment of the present invention provides an electronic device, including: an integrated circuit, a first functional module, and a second functional module, and the integrated circuit includes: the first functional module and The first signal output interface shared by the second functional module, the first functional module includes: a first signal input interface for connecting with the first signal output interface;

Wherein, the electronic equipment also includes:

a detection unit, configured to detect whether there is static electricity in the first functional module;

A circuit selection unit, configured to disconnect the link between the first signal output interface and the first signal input interface and input the first signal if it is determined that there is static electricity in the first functional module The interface is connected to the ground voltage.

Optionally, the integrated circuit further includes: a second signal output interface dedicated to the first functional module; the electronic device further includes: a control unit, configured to control the integrated circuit to its second signal output interface The second signal on the power-up and power-down operation.

Optionally, the electronic device also includes:

A reset unit, configured to output a reset signal to the first functional module, and when the reset signal is a valid pulse signal, the first functional module executes a reset

The drive unit is used to drive the reset unit to output a reset signal of the first potential after determining that there is static electricity in the first functional module; the circuit selection unit is used to respond to the reset signal of the first potential and disconnect the A link between the first signal output interface and the first signal input interface, and connecting the first signal input interface to a ground voltage.

Wherein, the circuit selection unit is used to respond to the reset signal of the first potential, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to ground voltage.

Optionally, the control unit is further configured to drive The reset unit outputs a reset signal of a second potential;

Wherein, the circuit selection unit is also used to respond to the reset signal of the second potential, stop connecting the first signal input interface to the ground voltage, and connect the first signal output interface and the first signal input interface link between.

Optionally, the circuit selection unit includes:

A first switch, the first connection end of which is connected to the ground wire, the second connection end of which is connected to the first signal output interface, and the control end of which is connected to the reset signal output by the reset unit;

The second switch has a first connection end connected to the first signal input interface and a ground wire, a second connection end connected to the first signal output interface, and a control end connected to the second connection of the first switch. terminal and the first signal output interface connection;

a first resistor set on the link between the first connection terminal of the second switch and the ground;

Wherein, the first switch is disconnected after its control terminal receives the reset signal of the first potential, so that the second switch is disconnected after the potential of the control terminal is pulled down, and then the first signal input interface is connected to the The link between the first signal output interfaces is disconnected, and the ground voltage from the ground wire is connected; the first switch is turned on after its control terminal receives a reset signal of the second potential, so that the first switch The second switch is turned on after the potential of the control terminal is pulled high, so that the first signal input interface stops receiving the ground voltage from the ground wire, and is turned on with the first signal output interface.

Optionally, the circuit selection unit further includes:

The second resistor is arranged on the link between the second connection end of the first switch and the first signal output interface.

On the other hand, the present invention also provides an electrostatic discharge method for electronic equipment. The electronic equipment includes: an integrated circuit, a first functional module, and a second functional module. The integrated circuit includes: the first functional module A first signal output interface shared by the second functional module, the first functional module includes: a first signal input interface for connecting with the first signal output interface;

Wherein, the electrostatic discharge method includes:

Detecting whether there is static electricity in the first functional module;

If there is static electricity in the first functional module, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to a ground voltage.

Optionally, the electronic equipment includes:

A reset unit, configured to output a reset signal to the first functional module, and when the reset signal is a valid pulse signal, the first functional module performs a reset;

A circuit selection unit, configured to respond to a reset signal of the first potential, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to a ground voltage ;

If there is static electricity in the first functional module, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to ground voltage, including :

If there is static electricity in the first functional module, control the reset unit to output a reset signal of the first potential, so that the drive circuit selection unit disconnects the link between the first signal output interface and the first signal input interface , and connect the first signal input interface to ground voltage.

Optionally, the integrated circuit further includes: a second signal output interface dedicated to the first functional module;

Described electrostatic discharge method comprises:

If there is static electricity in the first functional module, control the integrated circuit to power down the second signal on the second signal output interface.

Optionally, the first signal is a digital signal, and the second signal is an analog signal;

When the power-down time of the second signal reaches the first preset time, disconnect the link between the first signal output interface and the first signal input interface, and input the first signal to the interface Connect to ground voltage.

Optionally, the electrostatic discharge method also includes:

When the link between the first signal output interface and the first signal input interface is disconnected, and the duration of the first signal input interface connected to ground voltage reaches a second preset time, stop the first signal output interface. Connecting a signal input interface to a ground voltage, and re-conducting the link between the first signal output interface and the first signal input interface;

When the connection between the first signal input interface and the ground voltage is stopped, and the link between the first signal output interface and the first signal input interface is re-conducted, when the third preset time is reached, the control of the The integrated circuit powers on the second signal on its second signal output interface.

Optionally, the integrated circuit also includes:

a memory for caching data related to the first functional module;

Detecting whether there is static electricity in the first functional module includes:

Detecting data related to the first functional module cached in the memory;

If the detection result is abnormal, it is determined that there is static electricity in the first functional module.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the solution of the present invention, after a certain functional module receiving a public signal in the electronic device generates static electricity, the static discharge for the public signal can be performed separately for the functional module that generates static electricity, since there is no output to the integrated circuit side. Therefore, it will not affect the normal operation of other functional modules that also receive the common signal to the integrated circuit.

Description of drawings

Fig. 1 is the structural representation of electronic equipment of the present invention;

FIG. 2 is a schematic structural diagram of a circuit selection unit of the electronic device of the present invention;

Fig. 3 is a potential time slot diagram of each signal of the display module for weighing in a specific application of the electrostatic discharge method of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The present invention provides a solution to the problem that the existing electrostatic discharge scheme cannot directly power down the signal of the integrated circuit common interface.

On the one hand, an embodiment of the present invention provides an electronic device, as shown in FIG. 1 , comprising: an integrated circuit 1 , a first functional module 2 , a second functional module 3 , a detection unit 4 and a circuit selection unit 5 . in,

The integrated circuit 1 includes: a first signal output interface 11 shared by the first functional module 2 and the second functional module 3 , and the integrated circuit 1 outputs a first signal through the first signal output interface 11 .

The first functional module 2 includes: a first signal input interface 21 for connecting to the first signal output interface 11, that is, the first functional module 2 can obtain signals from the first signal output interface 11 through the first signal input interface 21. output first signal.

The detection unit 4 is used to detect whether there is static electricity in the first functional module 2 , for example, using the ESD software mentioned in the background art above to detect static electricity on the first functional module.

The circuit selection unit 5 is used to disconnect the link between the first signal output interface 11 and the first signal input interface 21 when the first functional module 2 is determined to have static electricity, and input the first signal to the interface 21. The ground voltage GND is connected to realize electrostatic discharge of the first signal on the side of the first functional module.

In this embodiment, when a certain functional module receiving a common signal in the electronic device generates static electricity, the static discharge for the common signal can be performed separately for the functional module where the static electricity occurs, since there is no output to the integrated circuit side Any changes to the common signal will not affect the normal work of other functional modules that also receive the common signal to the integrated circuit.

It should be noted here that the second functional module in this embodiment is not limited to one, but any functional module that shares the first signal with the first functional module can be regarded as the second functional module.

Further, referring to FIG. 1 , the integrated circuit of this embodiment further includes: a second signal output interface 12 dedicated to the first functional module 2 . The first functional module 2 receives the second signal from the second signal output interface 12 through its second signal input interface 22 .

Similarly, after static electricity occurs on the first functional module, the second signal of the second signal input interface 22 on the first functional module 2 should also be discharged. Different from the above-mentioned first signal, the integrated circuit 1 only outputs the second signal to the first functional module 2 , so the integrated circuit can be directly controlled to power down the second signal output interface 12 . That is, the electronic equipment of this embodiment further includes:

The control unit 6 is configured to control the integrated circuit 1 to perform power-on and power-off operations on the second signal on its second signal output interface.

In addition, when it comes to specific implementation, the circuit selection unit needs to be driven to work by a control signal. In order not to add a new control signal, as a preferred solution, this embodiment multiplexes the reset signal of the first function as the control signal for the driving circuit selection unit to work. That is, the electronic equipment of this embodiment is the same as the prior art, including:

A reset unit 7 for controlling the reset of the first functional module. Different from the prior art, the reset unit 7 of this embodiment will execute the first functional module only when the reset signal output to the first functional module 2 is an effective pulse signal (such as a continuous high-low-high signal). reset. in,

The electronic equipment of this embodiment also includes:

The driving unit 8 is configured to drive the reset unit 7 to output a reset signal of a first potential after determining that there is static electricity in the first functional module 2 . The above-mentioned circuit selection unit 5 is used for disconnecting the link between the first signal output interface 11 and the first signal input interface 21 in response to the reset signal of the first potential, and connecting the first signal input interface 21 to the ground voltage GND.

What needs to be explained here is that when the reset signal is at the first voltage, the first functional module will not be reset.

Correspondingly, after the discharge of the first signal is completed on the side of the first functional module, this embodiment can further enable the first functional module to receive the first signal again.

That is, the above-mentioned drive unit 8 in this embodiment is also used to drive the reset unit after the link between the first signal output interface 11 and the first signal input interface 21 is disconnected and the first signal input interface 21 is connected to the ground voltage. 7 outputting a reset signal of the second potential;

Wherein, the circuit selection unit 5 can respond to the reset signal of the second potential, stop connecting the first signal input interface 21 to the ground voltage, and turn on the link between the first signal output interface 11 and the first signal input interface 21. way, so that the first functional module 2 receives the first signal from the integrated circuit 1 .

Similarly, when the reset signal is at the second voltage, the first functional module will not be reset either. In addition, as an exemplary introduction, in a specific implementation, the above-mentioned first voltage may be a low-level voltage when the reset signal is an effective pulse signal, and the above-mentioned second voltage may be a high-level voltage when the reset signal is an effective pulse signal. The solution of this embodiment will not add a new output potential to the existing reset unit.

The circuit selection unit of the electronic device in this embodiment will be described in detail below.

Referring to Figure 2, the circuit selection unit includes:

The first switch Q1, the second switch Q2 and the resistor R1. in,

The first connection end of the first switch Q1 is connected to the ground line GND, and the second connection end thereof is connected to the first signal output interface 11 of the integrated circuit 1, so as to receive the first signal sent by the first signal output interface 11, and its control The terminal is connected to the above-mentioned reset unit, and receives the reset signal sent by the reset unit.

The first connection end of the second switch Q2 is connected to the digital input interface 21 of the first functional module and the ground wire GND, the second connection end is connected to the first signal output 11 interface, and the control end is connected to the first switch Q1. The two connection terminals are connected to the first signal output interface 11;

The first resistor R1 is arranged on the link between the first connection end of the second switch Q2 and the ground line GND.

When it is determined that static electricity occurs in the first functional module, the reset signal output by the reset unit is the first potential, and the first switch Q1 is disconnected after receiving the reset signal of the first potential at its control end, thereby making the first signal input interface 21 The link with the first signal output interface 11 is disconnected, the first signal input interface 21 receives the ground voltage GND on the ground line, and completes the release of the first signal voltage on the side of the first functional module.

When the first signal of the first functional module 2 is powered on again, the reset signal output by the reset unit is at the second potential, and the first switch Q1 is turned on after its control terminal receives the reset signal of the second potential, so that the second The second switch Q2 is turned on after the potential of its control terminal is pulled high by the first signal output by the first signal output interface 11, and then the link between the first signal input interface 21 and the first signal output interface 11 is turned on, and the first signal The first signal on the output interface 11 reaches the first signal input interface 21 under the action of the resistor R1, so that the first functional module 2 receives the first signal again.

In addition, when it comes to practical applications, the electronic device in this embodiment may be a smart terminal device that is waiting for a screen. The first functional module is the display module of the intelligent terminal device, and the second functional module may be the camera module, which shares a common signal on the integrated circuit with the display module. When static electricity occurs on the display module, the screen of the smart terminal device will appear blurred or black. In order not to interfere with the user experience, the voltage of all signals on the first functional module can be independently discharged to completely remove static electricity. During the whole process of removing static electricity, the camera module on the smart terminal device will not stop working. After the display module returns to normal, the task progress of the camera module can be retained. Since the whole process can be completed in milliseconds, it is difficult for users to sense the changes caused by the static electricity released by the display module, thereby improving the quality of experience.

On the other hand, another embodiment of the present invention also provides an electrostatic discharge method applied to the above-mentioned electronic equipment, including:

Step 1, detecting whether there is static electricity in the first functional module;

Step 2: If there is static electricity in the first functional module, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to ground voltage.

Similarly, the electrostatic discharge method of this embodiment can also multiplex the reset signal of the first functional module, and realize power-down of the first signal on the side of the first functional module.

That is, the electronic device of this example includes a reset unit and a circuit selection unit. Wherein, the reset unit is used to output a reset signal to the first functional module, and when the reset signal is an effective pulse signal, the first functional module executes reset; the circuit selection unit is used to respond to the reset signal of the first potential and disconnect the a link between the first signal output interface and the first signal input interface, and connecting the first signal input interface to a ground voltage;

In the specific execution process of step 2 of this embodiment, if there is static electricity in the first functional module, the reset unit is controlled to output a reset signal of the first potential, so that the drive circuit selection unit disconnects the first signal output interface from the first A link between the signal input interfaces, and connect the first signal input interface to the ground voltage.

Further, the integrated circuit further includes: a second signal output interface dedicated to the first functional module, for outputting the second signal to the first functional module.

The electrostatic discharge method of the present embodiment also includes:

Step 3, if there is static electricity in the first functional module, control the integrated circuit to power down the second signal on the second signal output interface.

In actual electronic equipment, generally, the digital signal output by the integrated circuit is a public signal, while the analog signal output by the integrated circuit is a dedicated signal. In the process of discharging static electricity to a functional module that generates static electricity, the analog signal is discharged first, and then the digital signal is discharged. When the electrostatic discharge is completed and the power is turned on again, the voltage of the digital signal should be restored first, and then the voltage of the analog signal should be restored.

Therefore, in this embodiment, if the first signal is a digital signal, the second signal is an analog signal. Then, after the power-down time of the second signal reaches the first preset time, the link between the first signal output interface and the first signal input interface is disconnected, and the first signal input interface is connected to the ground voltage. Wherein, setting the first preset time is to ensure that the first signal is released after the first functional module completely releases the second signal,

Similarly, when the link between the first signal output interface and the first signal input interface is disconnected, and the duration of the first signal input interface connected to the ground voltage reaches the second preset time, stop the connection of the first signal input interface. ground voltage, and re-conduct the link between the first signal output interface and the first signal input interface, so as to complete the power-on process of the first functional module for the first signal. Wherein, setting the second preset time is to ensure that the first signal is powered on again after the first functional module completely releases the first signal.

In addition, in the electrostatic method of this embodiment, when the first signal input interface is stopped from being connected to the ground voltage, and the link between the first signal output interface and the first signal input interface is re-conducted, the third preset time is always reached Afterwards, the integrated circuit is controlled to power on the second signal on the second signal output interface. Wherein, setting the third preset time is to ensure that the second signal is powered on after the first functional module completely completes the power-on of the first signal.

The electrostatic discharge method of this embodiment will be described in detail below in conjunction with an implementation manner.

In this implementation, the electronic device is used as an example for the introduction, and the mobile phone includes: an integrated circuit, a display module (that is, the first functional module mentioned above in this article), and a camera module (that is, the second functional module mentioned above in this article). Group). The integrated circuit includes an output interface for outputting a digital signal VDDI (corresponding to the first signal output interface mentioned above) and two output interfaces for outputting analog signals AVDD and AVEE respectively. Wherein, the output interface of the digital signal VDDI is used jointly by the display module and the camera module, while the output interfaces of the analog signals AVDD and AVEE are exclusively used by the display module.

Different from the prior art, the mobile phone in this implementation mode includes a circuit selection unit, and the structure of the circuit selection unit is the same as that shown in FIG. 2 . As an adaptive change applied to this implementation, it should be noted that the first signal output interface 11 on the integrated circuit 1 in FIG. 2 is the digital signal output interface described below, and the first functional module in FIG. 2 2 is the display module described below, and the first signal input interface 21 on the first functional module 2 is the digital signal input interface described below.

First, the ESD check software of the prior art is used to periodically check the memory (generally referred to as a register) of the sub-integrated circuit to determine whether the data cached and related to the display module is abnormal. If there is no abnormality in the data, do not do any processing; if the data is abnormal, it is determined that static electricity has occurred on the display module, and continue to execute the following process.

Referring to the time slot diagram shown in FIG. 3 , the control integrated circuit now powers down the output signals of the analog signals AVDD and AVEE. In Fig. 3, AVEE is -6V voltage, and the voltage is 0V after power-off. When the duration of AVEE power-off reaches 1MS, AVDD is powered down from +6V to 0V.

When the duration of analog signals AVDD and AVEE reaches 1MS after all power-off, the reset unit controlling the mobile phone outputs a reset signal RESET with a low potential (that is, the first potential referred to above) whose duration exceeds 700ms. When the reset signal RESET is at a low potential, In Fig. 2, the first switch Q1 is disconnected after the potential of its control terminal is pulled low, so that the digital signal VDDI (IC) of the digital signal output interface 11 on the integrated circuit 1 pulls the potential of the control terminal of the second switch Q2 high, and the second The switch tube Q2 is turned off, and the link between the digital signal input port 21 of the display module 2 and the digital signal output port 11 of the integrated circuit 1 is disconnected, thereby receiving the ground voltage GND for discharging. At this time, the voltage of the digital signal VDDI (IC) on the digital signal output port 11 on the side of the integrated circuit 1 is 1.8V, and the voltage of the digital signal VDDI (LCM) on the digital signal input port 21 on the side of the display module 2 is 0V after discharge. .

Afterwards, referring to FIG. 3 , control the reset unit of the mobile phone to output a reset signal RESET with a high potential (that is, the second potential referred to above), so that the display module 2 in FIG. 2 receives the 1.8V digital signal on the integrated circuit 1 again.

20ms after the reset signal Reset is pulled high, the analog signals AVDD and AVEE are powered on. Referring to Figure 3, first power up AVDD to restore it to +6V voltage. After AVDD is powered on for 1ms, power on AVEE to restore it to -6V voltage.

After AVEE is powered on for 10ms, the reset unit on the mobile phone is controlled to output a high-low-high reset signal. The high-low-high reset signal is an effective pulse signal that enables the display module to reset, and the display module restarts normally after receiving the pulse signal. Of course, as a preferred solution, the time slot length of the effective pulse signal can be further controlled between 10 μs and 100 μs. Under the delay of the resistor R2 in FIG. 3 , the instantaneous effective pulse signal cannot guide the first switch Q1 and the second switch Q2 on/off effect.

From the time slots shown in Figure 3, it can be seen that the digital signal VDDI(IC) output from the integrated circuit side maintains a voltage of +1.8V from the beginning to the end, so the entire process of removing static electricity will not produce any damage to the camera module. Impact.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (12)

1. An electronic device, comprising: an integrated circuit, a first functional module, and a second functional module, the integrated circuit comprising: a first signal shared by the first functional module and the second functional module an output interface, the first functional module includes: a first signal input interface for connecting with the first signal output interface; It is characterized in that the electronic equipment also includes: a detection unit, configured to detect whether there is static electricity in the first functional module; A circuit selection unit, configured to disconnect the link between the first signal output interface and the first signal input interface and input the first signal if it is determined that there is static electricity in the first functional module The interface is connected to the ground voltage. 2. The electronic device according to claim 1, wherein: The integrated circuit also includes: A second signal output interface dedicated to the first functional module; The electronic equipment also includes: The control unit is used to control the integrated circuit to perform power-on and power-off operations for the second signal on its second signal output interface. 3. The electronic device according to claim 1, further comprising: A reset unit, configured to output a reset signal to the first functional module, and when the reset signal is a valid pulse signal, the first functional module performs a reset; a driving unit, configured to drive the reset unit to output a reset signal of a first potential after determining that there is static electricity in the first functional module; Wherein, the circuit selection unit is used to respond to the reset signal of the first potential, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to into the ground voltage. 4. The electronic device according to claim 3, further comprising: The drive unit is further configured to drive the reset unit after the link between the first signal output interface and the first signal input interface is disconnected and the first signal input interface is connected to a ground voltage. outputting a reset signal of the second potential; Wherein, the circuit selection unit is also used to respond to the reset signal of the second potential, stop connecting the first signal input interface to the ground voltage, and connect the first signal output interface and the first signal input interface link between. 5. The electronic device according to claim 3 or 4, characterized in that, The circuit selection unit includes: A first switch, the first connection end of which is connected to the ground wire, the second connection end of which is connected to the first signal output interface, and the control end of which is connected to the reset signal output by the reset unit; The second switch has a first connection end connected to the first signal input interface and a ground wire, a second connection end connected to the first signal output interface, and a control end connected to the second connection of the first switch. terminal and the first signal output interface connection; a first resistor set on the link between the first connection terminal of the second switch and the ground; Wherein, the first switch is disconnected after its control terminal receives the reset signal of the first potential, so that the second switch is disconnected after the potential of the control terminal is pulled down, and then the first signal input interface is connected to the The link between the first signal output interfaces is disconnected, and the ground voltage from the ground wire is connected; the first switch is turned on after its control terminal receives a reset signal of the second potential, so that the first switch The second switch is turned on after the potential of the control terminal is pulled high, so that the first signal input interface stops receiving the ground voltage from the ground wire, and is turned on with the first signal output interface. 6. The electronic device according to claim 5, wherein The circuit selection unit also includes: The second resistor is arranged on the link between the second connection end of the first switch and the first signal output interface. 7. An electrostatic discharge method for an electronic device, the electronic device comprising: an integrated circuit, a first functional module, and a second functional module, the integrated circuit comprising: the first functional module and the second A first signal output interface shared by the functional modules, the first functional module comprising: a first signal input interface for connecting to the first signal output interface; It is characterized in that the electrostatic discharge method comprises: Detecting whether there is static electricity in the first functional module; If there is static electricity in the first functional module, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to a ground voltage. 8. electrostatic discharge method according to claim 7, is characterized in that, The electronic equipment includes: A reset unit, configured to output a reset signal to the first functional module, and when the reset signal is a valid pulse signal, the first functional module performs a reset; A circuit selection unit, configured to respond to a reset signal of the first potential, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to a ground voltage ; If there is static electricity in the first functional module, disconnect the link between the first signal output interface and the first signal input interface, and connect the first signal input interface to ground voltage, including : If there is static electricity in the first functional module, control the reset unit to output a reset signal of the first potential, so that the drive circuit selection unit disconnects the link between the first signal output interface and the first signal input interface , and connect the first signal input interface to ground voltage. 9. electrostatic discharge method according to claim 7, is characterized in that, The integrated circuit also includes: a second signal output interface dedicated to the first functional module; Described electrostatic discharge method comprises: If there is static electricity in the first functional module, control the integrated circuit to power down the second signal on the second signal output interface. 10. electrostatic discharge method according to claim 9, is characterized in that, The first signal on the first signal output interface is a digital signal, and the second signal is an analog signal; When the power-down time of the second signal reaches the first preset time, disconnect the link between the first signal output interface and the first signal input interface, and input the first signal to the interface Connect to ground voltage. 11. The electrostatic discharge method according to claim 10, further comprising: When the link between the first signal output interface and the first signal input interface is disconnected, and the duration of the first signal input interface connected to ground voltage reaches a second preset time, stop the first signal output interface. Connecting a signal input interface to a ground voltage, and re-conducting the link between the first signal output interface and the first signal input interface; When the first signal input interface is stopped from being connected to the ground voltage, and the link between the first signal output interface and the first signal input interface is re-conducted for a period of time reaching a third preset time, controlling the The integrated circuit powers on the second signal on its second signal output interface. 12. electrostatic discharge method according to claim 7, is characterized in that, The integrated circuit also includes: a memory for caching data related to the first functional module; Detecting whether there is static electricity in the first functional module includes: Detecting data related to the first functional module cached in the memory; If the detection result is abnormal, it is determined that there is static electricity in the first functional module.