CN107636783A - Control method, key device and the terminal of key device - Google Patents

Abstract

A kind of key device (200), including touch control component (3) and the switch (1) being arranged at below touch control component (3), touch control component (3) is used to export a touching signals according to a touch, and by the pressure conduction being subject to switch (1) and a pressing signal can be exported when touch control component (3) is pressed.Further relate to the control method of a kind of terminal (100) using the key device (200) and key device (200), in the key device (200) and terminal (100), mechanical key function can be achieved to avoid false touch by switching (1), relatively flexible touch control can be realized by touch control component, be provided simultaneously with touch and two kinds of control functions of mechanical key.

Description

Control method of key device, key device and terminal technical field

The present invention relates to the technical field of terminals, in particular to a method for controlling a key device, a key device and a terminal.

Background technique

Existing terminals, such as mobile phones, often use mechanical keys such as mechanical keyboards, navigation keys, and volume keys. With the development of technology, touch buttons appear, that is, users only need to touch a specific position to achieve certain operations. However, touch buttons often have false touches, and mechanical buttons cannot achieve relatively flexible touch functions. Both of them have certain defects.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved control method of a button device, a button device and a terminal.

The technical solution adopted by the present invention to solve the technical problem is to provide a button device, the button device includes a touch component and a switch arranged under the touch component, and the touch component is used to The action outputs a touch signal, and when the touch component is pressed, it can transmit the received pressure to the switch and output a press signal.

Preferably, the touch signal and the press signal correspond to different control functions.

Preferably, when the touch signal and the press signal are generated simultaneously, they correspond to the same control function.

Preferably, the touch signal and/or the press signal correspond to at least one of an exit key command or a return key command or a sleep wake-up command or an exit command.

Preferably, the touch signal corresponds to a return key command, and the press signal corresponds to an exit command.

Preferably, the button device further includes a processor, the processor communicates with the touch component and the switch, and outputs a control instruction corresponding to the touch signal or the press signal.

Preferably, the processor includes:

a first output module, configured to output a first control instruction according to the touch signal;

a second output module, configured to output a second control instruction according to the pressing signal;

A selection control module, connected to the first output module and the second output module, for selecting the first output module to output the first control instruction or the second output module to output the first control instruction according to the pressing signal 2. Control instructions;

The control instructions include the first control instruction and the second control instruction.

Preferably, the touch component includes a touch sensor, and the touch sensor includes:

The touch sensing module is used for sensing touch actions and outputting sensing signals;

a touch judgment module, configured to judge whether the sensing signal reaches a preset threshold, and output the touch signal when reaching;

The first output module is connected to the touch determination module, and outputs the first control instruction according to receiving the touch signal.

Preferably, the touch sensing module includes a driving unit, a sensing unit, and an analysis unit, wherein a variable capacitance that can be changed according to a touch action is formed between the driving unit and the sensing unit, The analysis unit outputs the induction signal according to the variable capacitance;

The preset threshold is a preset capacitance threshold.

Preferably, both the drive unit and the induction unit have a comb structure, and the comb teeth of the two are interlaced and embedded.

Preferably, the first output module is also used to search the register database according to the touch signal Whether there is corresponding valid data in, and output the first control command when finding corresponding valid data.

Preferably, the touch component includes a base, a touch cover installed on the base, and a touch sensor, the touch cover and the base form an accommodation cavity, and the touch sensor is installed in the accommodating cavity.

Preferably, the button further includes a support for supporting the touch component.

Preferably, the base includes a substrate and a base ring, the base ring protrudes along a peripheral edge of the substrate, and the touch cover is fastened and mounted on the top opening of the base ring.

Preferably, the touch sensor is a capacitive sensor, the upper surface of the touch sensor is bonded to the touch cover by a first fixed double-sided adhesive, and the lower surface of the touch sensor is fixed by a second fixed double-sided adhesive. The surface adhesive is bonded to the substrate.

Preferably, an opening is provided on the substrate and in the area of the base ring, a notch is provided on the outer edge of the substrate corresponding to the opening, one end of the touch sensor is connected to a flexible circuit board, the The flexible circuit board protrudes from the base through the opening and the notch.

Preferably, the support member is a silicone seat, a through hole is provided in the middle of the support member, and a bump is provided on the lower surface of the substrate, and the bump passes through the through hole and touches the switch superior.

A terminal includes the above key device.

Preferably, the terminal further includes a panel, the panel is provided with a mounting hole, the touch component is movably disposed in the mounting hole, the size of the mounting hole is smaller than the size of the base so as to prevent The key device falls off from the mounting hole.

Preferably, a first internal structural support is provided below the panel, the first internal structural support supports the panel, a main board is provided below the first internal structural support, and the first internal structure The supporting member presses the supporting member on the main board, and a second An internal structural support, the second internal structural support supports the main board and the first internal structural support.

Preferably, the material of the base is a metal material, and the touch sensor is fixed on the base by a second fixed double-sided adhesive, the second fixed double-sided adhesive is a conductive double-sided adhesive, and the The touch sensor is connected to a flexible circuit board, and the flexible circuit board is provided with metal contacts, and the flexible circuit board protrudes from the base and conflicts with the metal shrapnel on the main board through the metal contacts .

Preferably, the support is fixed on the main board, the touch control component is fixed on the support, and the switch is fixed on the main board at a position corresponding to the protrusion at the bottom of the base, When the touch component is pressed, the protrusion touches the switch.

Preferably, the terminal adopts an Android system.

A control method for a button device, the control method comprising the following steps:

The processor judges whether a pressing signal is generated on the switch, if yes, then outputs the second control command, if not, then the processor judges whether the touch component generates a touch signal, if yes, then outputs the first control command, if not , it does not output.

Preferably, the processor includes a control module, a first output module and a second output module, and the manipulation method further includes the following steps:

The selection control module judges whether a pressing signal is generated on the switch, if yes, the selection control module selects the second output module to output the second control command; if not, the selection control module selects the The first output module outputs the first control instruction.

Preferably, the touch component includes a touch sensor, the touch sensor includes a touch sensing module and a touch determination module, and the processor in the step determines whether the touch component generates a touch signal, and if so, Then output the first control instruction, if not, then the following steps are not included in the output:

The touch sensing module senses a touch action and outputs the sensing signal;

The touch judging module judges whether the sensing signal reaches a preset threshold, if yes, the first output module outputs the first control instruction; if not, ends.

Preferably, the touch sensing module senses a touch action and outputs the sensing signal, further comprising the following steps:

The first output module judges whether there is corresponding valid data in the register database according to the touch signal, and if yes, outputs the first control instruction, and if not, does not output.

Preferably, the touch sensing module includes a drive unit, a sensing unit and an analysis unit, and the touch judging module judging whether the sensing signal reaches a preset threshold further includes the following steps:

The analyzing unit judges whether the variable capacitance between the driving unit and the sensing unit reaches the preset threshold, if yes, outputs the sensing signal, and if not, does not output.

Preferably, the analyzing unit also generates interruption information when the variable capacitance reaches the preset threshold, and the sensing signal includes the interruption information.

Preferably, before the processor judges whether a pressing signal is generated on the switch, the following steps are further included:

The processor judges whether the switch generates a touch sensing signal according to an external touch action, and if so, executes the processor to judge whether a pressing signal is generated on the switch, and if not, ends.

The beneficial effects of implementing the present invention are: in the control method of the key device, the key device and the terminal of the present invention, the mechanical key function can be realized through the switch to avoid false touch, relatively flexible touch control can be realized through the touch component, and at the same time, it has touch control. And mechanical button two kinds of control functions.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

FIG. 1 is a partial schematic diagram of a terminal provided in a preferred embodiment of the present invention;

Fig. 2 is a sectional view at A-A place of Fig. 1;

Fig. 3 is an enlarged view at B of Fig. 2;

FIG. 4 is a schematic structural diagram of a button device of the terminal in FIG. 1;

Fig. 5 is a structural schematic diagram of another angle of the button device in Fig. 1;

Fig. 6 is an exploded view of the touch assembly and the supporting member of the button device in Fig. 5;

Fig. 7 is a cross-sectional view of the touch component and the support member of the button device in Fig. 5;

Fig. 8 is a schematic diagram of the principle of the button device provided by the preferred embodiment of the present invention;

Fig. 9 is a schematic diagram of the principle of the processor in Fig. 8;

Fig. 10 is a schematic diagram of the principle of the touch sensor provided by the preferred embodiment of the present invention;

Fig. 11 is a schematic front view of the touch sensing module circuit board provided by the preferred embodiment of the present invention;

Fig. 12 is a schematic diagram of the reverse side of the circuit board of the touch sensor module provided by the preferred embodiment of the present invention;

Fig. 13 is a schematic diagram of the principle of the touch sensing module provided by the preferred embodiment of the present invention;

FIG. 14 is a circuit diagram of a touch sensing module provided by a preferred embodiment of the present invention.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 3 , a terminal 100 provided by an embodiment of the present invention may be a mobile phone, a tablet computer, a PDA or other electronic terminal equipment. The terminal 100 includes a key device 200 . In this embodiment, the terminal 100 further includes a panel 102 , the panel 102 is provided with an installation hole 110 , and the key device 200 is installed in the installation hole 110 . The terminal 100 may adopt, but is not limited to adopt, an Android system.

Below the panel 102 is provided with a first internal structure support 103, the first internal structure support 103 supports the panel 102, a main board 104 is provided below the first internal structure support 103, and under the main board 104 There is a second internal structure support 105 on the other side, the second internal structure support 105 supports the main board 104 and the first internal structure support 103, and the main board 104 can be conveniently Fixed within the terminal. In this embodiment, the terminal 200 also includes a housing 101, an inner cavity may be formed between the panel 102 and the housing 101, and the first internal structural support 103, the second internal structural support 105, and the main board 104 are all arranged in the inner cavity. middle.

As shown in FIG. 3 to FIG. 5 , the button device 200 includes a touch component 3 , a support member 2 supporting the touch component 3 , and a switch 1 installed under the touch component 3 and in contact with the touch component. The touch component 3 is movably disposed in the installation hole 110 , and the size of the installation hole 110 is smaller than that of the base 31 so as to prevent the button device from falling out of the installation hole 110 . Specifically, the base 31 includes a base plate 311 and a base ring 312. A peripheral edge of the base plate 311 forms a skirt 313 around the base 31 with respect to the base ring 312, so that the lower surface of the panel 102 around the mounting hole can cover the skirt 313. , so as to prevent the key device 200 from falling off from the mounting hole 110 . There can be a gap between the skirt 313 and the lower surface of the panel 102, so that when the user presses one end of the button device 200, the other end can be tilted up, which can prevent the button device 200 from being stuck or the skirt 313 from frequently touching the panel 102. lower surface, causing wear. In other embodiments, the touch component may not interfere with the switch 1 , it only needs to be able to transmit the pressing pressure to the switch 1 when pressed, for example, a force-conducting element is provided between the touch component and the switch.

As shown in FIGS. 3 to 7 , the touch component 3 includes a base 31 , a touch cover 33 installed on the base 31 , and a touch sensor 32 installed between the base 31 and the touch cover 33 . Relatively flexible touch control can be realized through the touch sensor 32 .

The touch cover 33 can protect the touch sensor 32 . The touch cover plate 33 may be a glass plate or a sapphire plate or the like. The touch cover 33 can protect the touch sensor 32 without affecting the sensing performance of the touch sensor 32 .

The base 31 includes a base plate 311 and a base ring 312, the base ring 312 protrudes along the peripheral edge of the base plate 311 Setting, the touch cover 33 is buckled and installed on the base ring 312, so as to facilitate the assembly and connection between the base 31, the touch cover 33 and the touch sensor 32, so that the touch component 3 forms an integral module for convenience. connection with other components. Here, in other implementation manners, the base can also be flat, and the touch sensor and the touch cover can be stacked on the base in sequence.

Preferably, the touch sensor 32 is a capacitive sensor, so as to improve the sensitivity, dynamic response speed and stability of touch signal sensing. Here, in other implementation manners, the touch sensor 32 may also be a resistive sensor or other sensors capable of detecting touch signals. The upper surface of the touch sensor 32 is bonded to the touch cover 33 through the first fixed double-sided adhesive 35, and the lower surface of the touch sensor 32 is bonded to the substrate 311 through the second fixed double-sided adhesive 36, so as to facilitate the capacitive sensor and The fixed connection between the touch cover 33 and the substrate 311 .

In some embodiments of the present invention, from the perspective of working principles, as shown in FIG. 8 , the button device 200 further includes a processor 4 , and the processor 4 cooperates with the switch 1 and the touch component 3 to realize corresponding functions. Among them, the touch component 3 is used to output a touch signal according to the touch action, the switch 1 is used to output a press signal according to the press action, and the processor 4 is connected to the touch component 3 and the switch 1 in communication, and outputs the touch signal Or press the control command corresponding to the signal. In some embodiments, the method for operating a key device includes steps S1 to S3. S1: The processor 4 judges whether a pressing signal is generated on the switch 1, if yes, executes S3, if not, executes step S2; S2: The processor 4 judges whether the touch component 3 generates a touch signal, if yes, then outputs If not, the first control instruction is not output; S3: output the second control instruction. Preferably, the control instructions include a first control instruction and a second control instruction.

Wherein, as shown in FIG. 9 , the processor 4 includes a first output module 41 , a second output module 42 and a selection control module 43 . It can be understood that the processor 4 may be a device provided separately from the key device 200 , or may be a part originally belonging to the terminal but shared with the key device 200 .

The first output module 41 is used for outputting the first control instruction according to the touch signal. As an option, the first The output module 41 is also used to search whether there is corresponding valid data in the register database according to the touch signal, and output the first control command when finding corresponding valid data. Preferably, the first output module 41 reads the data of the relevant registers in the control chip through the IIC bus.

The second output module 42 is used for outputting the second control instruction according to the pressing signal. Alternatively, the first control instruction and/or the second control instruction is at least one of an exit key instruction, a return key instruction, a sleep wake-up instruction, and an exit instruction. Preferably, the first control command and the second control command are respectively a HOME key command or a BACK key command. For example, the first control instruction is a return key instruction, and the second control instruction is an exit instruction. It can be understood that the exit instruction is an instruction for the terminal to return to the system desktop.

The selection control module 43 is connected with the first output module 41 and the second output module 42, and is used for selecting the first output module 41 to output the first control instruction or the second output module 42 to output the second control instruction according to the pressing signal. Preferably, when the switch 1 is not pressed or the pressing pressure is less than the pressing force threshold, the processor 4 detects that the voltage of the switch 1 is at a high level (the voltage value is equal to VDD/AVDD); when the finger corresponding to the pressing signal or When the pressure of other objects pressing the switch 1 reaches or exceeds the pressing force threshold, the processor 4 detects that the voltage of the switch 1 is at a low level (short circuit state with GND). Understandably, the pressing force threshold is 1.6-3.5N. Preferably, the pressing force threshold is 2.4N. When the processor 4 detects that the voltage of the switch 1 is at a high level, the processor 4 considers that the switch 1 is not pressed, and simultaneously detects the signal of the touch sensor 32 . When the processor 4 detects that the voltage of the switch 1 is at a low level, the processor 4 ignores the signal of the touch sensor 32 and considers the switch 1 as being pressed.

Preferably, some embodiments may also include a false touch prevention method. Before step S1, the following steps may also be included: the processor 4 judges whether the switch 1 generates a touch sensing signal according to an external touch action, and if so, it indicates that the generation of the pressing signal is based on an instruction issued by the user, thereby Step S1 can be continued. If not, it means that it is not an instruction issued by the user, but the press signal is generated due to touching other objects by mistake. In this case, the subsequent operation is ended immediately. The advantage of this is that only after the user sends an instruction will the judgment of the pressing signal be further carried out. If other objects are touched by mistake, the current operation interface will be directly exited, which can prevent the user from affecting the experience due to the mistaken touch of switch 1.

In some preferred embodiments, the manipulation method further includes the following steps T1 to T3. T1: the selection control module 43 judges whether a pressing signal is generated on the switch 1, if yes, execute step T3; if not, execute step T2. T2: The selection control module 43 selects the first output module 41 to output the first control instruction. T3: The selection control module 43 selects the second output module 42 to output the second control instruction.

As shown in FIG. 10 , the touch sensor 32 includes a touch sensing module 321 and a touch determination module 322 . The touch sensing module 321 is used for sensing touch actions and outputting sensing signals. As shown in FIG. 11 to FIG. 14 , the touch sensing module 321 includes a driving unit 321A, a sensing unit 321B and an analysis unit 321C, wherein a gap formed between the driving unit 321A and the sensing unit 321B can be changed according to changes in touch actions. The analysis unit 321C outputs a sensing signal according to the variable capacitance. Preferably, the preset threshold is a preset capacitance threshold, and the preset threshold can be adjusted according to actual needs. The touch sensing module 321 is composed of two sides, the front side is the driving unit 321A and the sensing unit 321B, which are embedded in each other and arranged alternately, and the back side is the copper pouring of GND. Preferably, both the driving unit 321A and the sensing unit 321B have a comb-shaped structure, and the comb teeth of the two are interlaced and embedded with each other, and can be interchanged. Alternatively, the drive unit 321A and the sensing unit 321B on the front side may also have other structures, as long as the interleaving and embedding arrangement can be realized. Wherein the base ring 312 can be connected to GND to improve electrostatic shielding performance. When no substance is in contact with the touch sensor 32 , a capacitance is formed between the electrodes of the driving unit 321A and the sensing unit 321B. When a finger or other conductive substance is lightly touched or the pressure on the key surface is less than a pressure threshold, it will cause The capacitance between the driving unit 321A and the sensing unit 321B changes. Understandably, the pressure threshold is 1.6-3.5N. Preferably, the pressure threshold is 2.4N. The size of the pressure threshold can be determined according to the model of switch 1 (switch 1 can choose a dome switch). Different switches have different pressure thresholds, and the type can be selected according to actual needs. When the capacitance change reaches or exceeds the preset capacitance value change, the analysis unit 321C will generate an interrupt message and output a sensing signal, and the sensing signal includes the interrupt information.

The touch determination module 322 is used for determining whether the sensing signal reaches a preset threshold, and outputs a touch signal when reaching. It can be understood that the first output module 41 is connected with the touch determination module 322 and outputs the first control instruction according to the received touch signal.

Preferably, in some embodiments, the above step S2 further includes the following steps P1 to P3. P1: the touch sensing module 321 senses a touch action and outputs a sensing signal, and the sensing signal includes interruption information. Alternatively, the first output module 41 also judges whether there is corresponding valid data in the register database according to the touch signal, and if yes, outputs the first control command, and if not, does not output. P2: The touch determination module 322 determines whether the sensing signal reaches a preset threshold, if yes, execute step P3; if not, end. P3: The first output module 41 outputs the first control instruction.

The base 31 is made of metal to improve structural strength. The base 31 can be integrally formed, for example, formed by stamping, so as to facilitate processing and forming. When the base 31 is a metal material, in order to avoid electrostatic interference to the touch sensor 32, the base 31 and the touch sensor 32 need to be electrically connected, so the touch sensor 32 is bonded to the touch sensor 32 by the second fixed double-sided adhesive 36. In the base 31, the second fixed double-sided adhesive 36 is a conductive double-sided adhesive, the touch sensor 32 is connected with a flexible circuit board (FPC) 34, and the flexible circuit board 34 is provided with a metal contact 341 (gold finger), and the flexible circuit The board 34 protrudes from the base 31 and is in contact with the metal dome 342 on the main board 104 through the metal contact 341 . The flexible circuit board 34 of the touch sensor 32 is connected to the main board 104 and the base 31 is grounded through the main board 104. Of course, in In other embodiments, the base 31 may not be grounded.

On the substrate 311 and in the area of the base ring 312, an opening 310 is provided. The outer edge of the substrate 311 is provided with a gap 310a corresponding to the opening 310. One end of the touch sensor 32 is connected to a flexible circuit board 34, and the flexible circuit board 34 has an opening 310. And the notch 310 a protrudes from the base 31 . Through the opening 310 and the notch 310a, the flexible circuit board 34 can be conveniently arranged to electrically connect the touch sensor 32 to the main board 104 . Interference between the flexible circuit board 34 and the supporting member 2 can be avoided by using the notch 310a. The flexible circuit board 34 can deform to a certain extent during the pressing and bouncing movement of the touch component 3 without affecting the electrical connection circuit, which is convenient to use and prolongs the service life. Here, in other embodiments, an opening may also be provided on the base ring 312 to facilitate the installation of the flexible circuit board 34 .

The switch 1 is used for pressing input by the user. When the user presses the key device 200 , the touch component 3 moves toward the switch 1 under the force of the user's pressing force, and the switch 1 is triggered. The switch function of the mechanical key device can be realized by the switch 1 to avoid false touches. Alternatively, the switch 1 can be a DOME switch sheet.

Preferably, the switch 1 can be fixed on the main board 104 so that the switch can be connected to other electronic components of the main board 104 to realize the control function of the switch. Here, in other implementation manners, the switch 1 may also be arranged on the first internal structural support member 103 or other components in the terminal.

The switch 1 is preferably a membrane key device. In other embodiments, the switch can also be a patch type tact switch or a conductive rubber switch or other mechanical switch key devices. By using the switch and the touch control component 3, the key device has both mechanical keys and touch functions, and the user's touch and press operations can provide two different electrical signals to realize multiple control functions on one component. When the user presses the button device, the touch sensing signal and the switch 1 can be triggered at the same time, so that multiple control functions can be realized on one component, and the structural space can be saved. The two control signals generated by the touch sensor 32 and the switch 1 can be used to control different functions respectively, and can also control the same function at the same time, for example, when two A function is only activated when two control signals are generated at the same time, which can effectively avoid false touches.

The support member 2 is a silicone seat, so that it has a certain deformation performance, and is supported under the touch component 3. When the touch component 3 moves toward the switch 1, the support member 2 can be deformed, so that the touch component 3 can move downward. , and at the same time, the support member 2 can also provide an upward restoring force for the touch component 3 .

As shown in FIG. 3 and FIG. 7 , a through hole 20 is provided in the middle of the support member 2 , and a protrusion 314 is provided on the lower surface of the base 31 ; the protrusion 314 passes through the through hole 20 and touches the switch. When the support member 2 is in a deformed state under the pressure of the touch component 3 , the protrusion 314 abuts against the switch 1 to trigger the switch 1 . Since the protruding block 314 is formed by extending from the base 31 , the protruding block 314 is a part of the base 31 and is also made of metal, which has a certain hardness and is convenient to abut against the switch 1 and apply pressure to the switch 1 . In this embodiment, the switch 1 is a thin-film button device, and when the dome is pressed down by the bump 314, the switch 1 can be triggered and provide a pressing feedback to the user, thereby generating a pressing signal, which is transmitted to the selection control module 43 for further Select to output the second control command. When the touch component 3 is not pressed, the bump 314 and the switch 1 can be in contact with each other. Since the switch is a membrane switch, its dome can provide the restoring force for the touch component 3 to slide upward.

In this embodiment, as shown in FIG. 3 , the support 2 is fixed on the main board 104, and the first internal structure support 103 presses and fixes the support 2 on the main board 104, and the touch component 3 is fixed on the support 2. The switch 1 is fixed on the main board 104 at the position of the bump corresponding to the bottom of the base 31 . When the touch component 3 is pressed, the bump touches the switch so that the switch is triggered, thereby realizing the user's pressing input. The touch component 3 is supported above the switch 1 by the support member 2 to facilitate triggering the switch 1 . The base 31 of the touch component 3 can be fixed to the support 2 by glue, so that the touch component 3 and the support 2 are connected as a whole, and the touch component 3 is positioned through the mounting hole 110, while the first internal structure The support member 103 presses the support member 2 tightly, so that the support member 2 and the main board 104 do not need to use a fixed connection structure, and the support member 2 is directly against the main board 104, thereby facilitating assembly and connection.

The above descriptions are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (30)

A button device, characterized in that the button device includes a touch component and a switch arranged under the touch component, the touch component is used to output a touch signal according to a touch action, the touch When the control component is pressed, it can transmit the received pressure to the switch and output a pressing signal. The key device according to claim 1, wherein the touch signal and the pressing signal correspond to different control functions. The key device according to claim 1, wherein when the touch signal and the press signal are generated simultaneously, they correspond to the same control function. The key device according to claim 1, wherein the touch signal and/or the press signal correspond to at least one of an exit key command, a return key command, a sleep wake-up command, or an exit command. The key device according to claim 4, wherein the touch signal corresponds to a return key command, and the pressing signal corresponds to an exit command. The key device according to claim 1, characterized in that, the key device further comprises a processor, the processor communicates with the touch component and the switch, and outputs the touch signal or press The control command corresponding to the signal. The key device according to claim 6, wherein the processor comprises: a first output module, configured to output a first control instruction according to the touch signal; a second output module, configured to output a second control instruction according to the pressing signal; A selection control module, connected to the first output module and the second output module, for selecting the first output module to output the first control instruction or the second output module to output the first control instruction according to the pressing signal 2. Control instructions; The control instructions include the first control instruction and the second control instruction. The button device according to claim 7, wherein the touch component comprises a touch sensor, and the touch sensor comprises: The touch sensing module is used for sensing touch actions and outputting sensing signals; a touch judgment module, configured to judge whether the sensing signal reaches a preset threshold, and output the touch signal when reaching; The first output module is connected to the touch determination module, and outputs the first control instruction according to receiving the touch signal. The button device according to claim 8, wherein the touch sensing module comprises a driving unit, a sensing unit, and an analysis unit, wherein a touch control unit is formed between the driving unit and the sensing unit and can be used according to the touch action. The variable capacitance that changes according to the change of the variable capacitance, and the analysis unit outputs the induction signal according to the variable capacitance; The preset threshold is a preset capacitance threshold. The key device according to claim 9, characterized in that, both the driving unit and the sensing unit are comb-shaped, and the comb teeth of the two are interlaced and embedded. The key device according to claim 7, wherein the first output module is further configured to search whether there is corresponding valid data in the register database according to the touch signal, and when the corresponding valid data is found. Outputting the first control instruction when the data is displayed. The button device according to claim 1, wherein the touch component comprises a base, a touch cover mounted on the base, and a touch sensor, and the touch cover and the base The seat forms an accommodating cavity, and the touch sensor is installed in the accommodating cavity. The key device according to claim 12, wherein the key further comprises a supporting member supporting the touch component. The key device according to claim 13, wherein the base comprises a substrate and The base ring is protrudingly arranged along the peripheral edge of the substrate, and the touch cover is fastened and mounted on the top opening of the base ring. The button device according to claim 14, wherein the touch sensor is a capacitive sensor, and the upper surface of the touch sensor is bonded to the touch cover by a first fixed double-sided adhesive, and the The lower surface of the touch sensor is bonded to the substrate through the second fixed double-sided adhesive. The button device according to claim 15, wherein an opening is provided on the substrate and in the area of the base ring, a notch is provided on the outer edge of the substrate corresponding to the opening, and the touch One end of the sensor is connected with a flexible circuit board, and the flexible circuit board protrudes from the base through the opening and the notch. The key device according to any one of claims 13 to 16, characterized in that, the support member is a silicone seat, a through hole is provided in the middle of the support member, and a bump is provided on the lower surface of the substrate, The protrusion passes through the through hole and abuts against the switch. A terminal, characterized in that the terminal comprises the button device according to any one of claims 1-17. The terminal according to claim 18, wherein the terminal further comprises a panel, the panel is provided with a mounting hole, the touch component is movably arranged in the mounting hole, and the mounting hole The size is smaller than that of the base so as to prevent the key device from falling off from the mounting hole. The terminal according to claim 19, wherein a first internal structural support is provided under the panel, and the first internal structural support supports the panel, and under the first internal structural support A main board is provided, the first internal structural support presses the support on the main board, and a second internal structural support is provided below the main board, and the second internal structural support supports the The main board and the first internal structural support. The terminal according to claim 20, wherein the material of the base is a metal material, the touch sensor is fixed on the base by a second fixed double-sided adhesive, and the second fixed double-sided adhesive The surface adhesive is a conductive double-sided adhesive, the touch sensor is connected with a flexible circuit board, the flexible circuit board is provided with metal contacts, and the flexible circuit board protrudes from the base and passes through the metal contacts Conflict with the metal shrapnel on the motherboard. The terminal according to claim 20 or 21, wherein the support is fixed on the main board, the touch component is fixed on the support, and the switch is fixed on the main board correspondingly At the position of the protrusion on the bottom of the base, when the touch component is pressed, the protrusion touches the switch. The terminal according to claim 18, wherein the terminal adopts an Android system. A control method for a button device, characterized in that the control method comprises the following steps: The processor judges whether a pressing signal is generated on the switch, if yes, then outputs the second control command, if not, then the processor judges whether the touch component generates a touch signal, if yes, then outputs the first control command, if not , it does not output. The control method according to claim 24, wherein the processor comprises a control module, a first output module and a second output module, and the control method further comprises the following steps: The selection control module judges whether a pressing signal is generated on the switch, if yes, the selection control module selects the second output module to output the second control command; if not, the selection control module selects the The first output module outputs the first control instruction. The control method according to claim 25, wherein the touch component includes a touch sensor, the touch sensor includes a touch sensing module and a touch judgment module, and in the step, the processor judges the touch Whether the control component generates a touch signal, if so, then output the first control command, if not, then not output, the following steps are also included: The touch sensing module senses a touch action and outputs the sensing signal; The touch judging module judges whether the sensing signal reaches a preset threshold, if yes, the first output module outputs the first control instruction; if not, ends. The control method according to claim 26, wherein the touch sensing module senses a touch action and outputs the sensing signal, further comprising the following steps: The first output module judges whether there is corresponding valid data in the register database according to the touch signal, and if yes, outputs the first control instruction, and if not, does not output. The control method according to claim 26 or 27, wherein the touch sensing module includes a driving unit, a sensing unit and an analysis unit, and the touch judging module judges whether the sensing signal reaches a preset threshold or not. Including the following steps: The analyzing unit judges whether the variable capacitance between the driving unit and the sensing unit reaches the preset threshold, if yes, outputs the sensing signal, and if not, does not output. The control method according to claim 28, wherein the analysis unit also generates an interruption message when the variable capacitance reaches the preset threshold, and the sensing signal includes the interruption information. The control method according to any one of claims 24 to 27, characterized in that before the processor judges whether a pressing signal is generated on the switch, it also includes the following steps: The processor judges whether the switch generates a touch sensing signal according to an external touch action, and if so, executes the processor to judge whether a pressing signal is generated on the switch, and if not, ends.