CN208903232U - Touch screen passive triggering device - Google Patents
Touch screen passive triggering device Download PDFInfo
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- CN208903232U CN208903232U CN201821738456.8U CN201821738456U CN208903232U CN 208903232 U CN208903232 U CN 208903232U CN 201821738456 U CN201821738456 U CN 201821738456U CN 208903232 U CN208903232 U CN 208903232U
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- 238000001514 detection method Methods 0.000 claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 18
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of touch screen passive triggering devices.Device includes: touch screen driving electrodes signal deteching circuit, for the trigger electrode that the receiving electrode with touch screen is correspondingly connected with, microprocessor module, control button, signal processing module and analog switch module；The touch screen driving electrodes signal deteching circuit is equipped with the detection circuit electrode that multiple driving electrodes for touch screen are correspondingly connected with；The control button is electrically connected with the microprocessor module；The analog switch module is electrically connected with the signal processing module, trigger electrode and microprocessor module respectively；The signal processing module is also electrically connected with the touch screen driving electrodes signal deteching circuit.Achieve the purpose that be not required to that touch screen operation can also be carried out with finger contact touch screen, work as in some touch screens inconvenient to use to realize or do not reach touch screen, but need to control the technical effect for still being able to advantageously carry out touch screen operation under the scene of touch screen again.
Description
Technical field
This application involves touch screen control technical fields, in particular to a kind of touch screen passive triggering device.
Background technique
Projection-type capacitive touch screen has the function of referring to touch-control more.With that light transmittance is high, reaction speed is fast, the service life is long etc. is excellent
Point.
It is made of inside projected capacitive screen driving electrodes and receiving electrode, driving electrodes issue low-voltage touch screen itself and drive
Moving electrode signal projects receiving electrode and forms stable electric current, when human contact is to capacitance plate, since human body is equivalent to one
A big conductor, finger and capacitance plate just form an equivalent capacity, and the position that finger touches is equivalent due to being superimposed human body
The position capacitance of capacitor, touch point increases.And touch screen itself driving electrodes signal can be flowed by this equivalent capacity
Receiving electrode and human body, in this way, touch screen received by receiving electrode itself driving electrodes signal due to capacitance increase and
Increase.Signal processing circuit can determine touched point by calculating according to receiving electrode received signal intensity.
It is fabricated to laterally and longitudinally electrod-array with ITO in glass surface, these horizontal and vertical electrodes respectively constitute
Capacitor, the self-capacitance that this capacitor is just known as.When finger touches capacitance plate, the capacitor of finger will be added to screen
In body capacitance, make to shield the increase of body capacitance amount.
Although touch screen largely facilitates operation of the user usually to various intelligent terminals；But it still has
Some cases be touch screen inconvenient to use or using touch screen cannot achieve it is good operation or do not reach touch screen, but
It is and needs to control the place of touch screen.Such as: hospital, factory industry control, mobile-phone game handle etc..
For how in the state that finger does not contact touch screen, allow in the related technology touch screen generate as finger touch one
The problem of control effect of sample, currently no effective solution has been proposed.
Utility model content
The main purpose of the application be to provide it is a kind of be not required to contact touch screen with finger can also carry out touch screen operation
Touch screen passive triggering device, to solve the problems, such as present in the relevant technologies.
To achieve the goals above, according to the one aspect of the application, a kind of touch screen passive triggering device is provided.
Include: according to the touch screen passive triggering device of the application
Touch screen driving electrodes signal deteching circuit, for the trigger electrode that the receiving electrode with touch screen is correspondingly connected with,
Microprocessor module, control button, signal processing module and analog switch module；
The touch screen driving electrodes signal deteching circuit is equipped with multiple driving electrodes for touch screen and is correspondingly connected with
Detection circuit electrode；
The control button is electrically connected with the microprocessor module, for being touched and then pressing the control button
Send out on touch screen corresponding trigger point described；
The analog switch module is electrically connected with the signal processing module, trigger electrode and microprocessor module respectively；
The signal processing module is also electrically connected with the touch screen driving electrodes signal deteching circuit；For according to the microprocessor
The corresponding detection circuit electrode in the trigger point is connected simultaneously the turn-on command of module by signal processing module and trigger electrode
Certain time is maintained, and completes touch operation.
Further, touch screen passive triggering device as the aforementioned, the signal processing module include: letter interconnected
Number amplifying circuit and booster circuit；
The signal amplification circuit is also electrically connected with the touch screen driving electrodes signal deteching circuit and analog switch module
It connects, the signal detected for amplifying the touch screen driving electrodes signal deteching circuit.
Further, touch screen passive triggering device as the aforementioned, further includes: further include: power module；The power supply mould
Block is electrically connected with the signal processing module, microprocessor module and analog switch module, and is powered.
Further, touch screen passive triggering device as the aforementioned, the power module include: electric power management circuit and electricity
Pond；
The electric power management circuit is electric with the battery, booster circuit, analog switch module and microprocessor module respectively
Connection.
Further, touch screen passive triggering device as the aforementioned, the battery are rechargeable lithium battery.
Further, touch screen passive triggering device as the aforementioned, the power module include further include: li-ion cell protection
Circuit and lithium battery charging management circuit；
The lithium battery protection circuit and lithium battery charging management circuit are electrically connected with the battery.
Further, touch screen passive triggering device as the aforementioned, the touch screen driving electrodes signal deteching circuit and
Trigger electrode is set to the touch screen surface.
Further, touch screen passive triggering device as the aforementioned, the touch screen driving electrodes signal deteching circuit and
Trigger electrode be respectively FPC flexible circuit board, the transparent glass for having conductive coating or have in the transparent membrane of conductive coating one
Kind.
Further, touch screen passive triggering device as the aforementioned, the booster circuit is can be by the power module
Voltage amplification to positive and negative 10V voltage or positive 20V voltage processing module.
Further, touch screen passive triggering device as the aforementioned, the central processing unit use model
The microprocessor of HT32F52331.
In the embodiment of the present application, by the way of touch screen passive triggering device, pass through setting: touch screen driving electrodes
Signal deteching circuit, for the trigger electrode that the receiving electrode with touch screen is correspondingly connected with, microprocessor module, control button,
Signal processing module and analog switch module；The touch screen driving electrodes signal deteching circuit is equipped with multiple be used for and touch screen
The detection circuit electrode that is correspondingly connected with of driving electrodes；The control button is electrically connected with the microprocessor module, for leading to
It crosses and presses the control button and then trigger corresponding trigger point on the touch screen；The analog switch module respectively with institute
State signal processing module, trigger electrode and microprocessor module electrical connection；The signal processing module also drives with the touch screen
The electrical connection of moving electrode signal deteching circuit；It is for the turn-on command according to the microprocessor module that the trigger point is corresponding
Detection circuit electrode is connected and maintains certain time by signal processing module and trigger electrode, and completes touch operation.Reach
The purpose of touch screen operation can also be carried out by being not required to contact touch screen with finger, to realize when in hospital, factory industry control
Touch screen inconvenient to use or touch screen is not reached under some cases such as system, mobile-phone game handle, but needs to control again
Under the scene of touch screen, it still is able to advantageously carry out the technical effect of touch screen operation, and then solve and deposit in the related technology
The technical issues of.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, so that the application's is other
Feature, objects and advantages become more apparent upon.The illustrative examples attached drawing and its explanation of the application is for explaining the application, not
Constitute the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the functional module connection schematic diagram according to a kind of embodiment device of the application；
Fig. 2 is according to a kind of electrical block diagram of the central processing unit of embodiment of the application；
Fig. 3 is according to a kind of electrical block diagram of the electric power management circuit of embodiment of the application；
Fig. 4 is according to a kind of detecting electrode of embodiment of the application, signal amplification circuit, digital control analog switch and inspection
Survey the electrical block diagram of electrode；
Fig. 5 is according to a kind of detecting electrode of embodiment of the application, signal amplification circuit, digital control analog switch and inspection
Survey the electrical block diagram of electrode；
Fig. 6 is according to a kind of electrical block diagram of the key part of embodiment of the application；
Fig. 7 is according to a kind of electrical block diagram of the LED light of embodiment of the application；And
Fig. 8 is according to a kind of electrical block diagram of the rocking bar of embodiment of the application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
In this application, term " on ", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on the figure or
Positional relationship.These terms are not intended to limit indicated dress primarily to better describe the application and embodiment
Set, element or component must have particular orientation, or constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term " on " also are likely used for indicating certain relations of dependence or connection relationship in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in this application can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected ", " socket " shall be understood in a broad sense.For example,
It may be a fixed connection, be detachably connected or monolithic construction；It can be mechanical connection, or electrical connection；It can be direct phase
It even, or indirectly connected through an intermediary, or is two connections internal between device, element or component.
For those of ordinary skills, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, providing a kind of touch screen passive triggering device, comprising: touch screen driving electrodes signal deteching circuit
1, the trigger electrode 2 that is correspondingly connected with for the receiving electrode with touch screen (P3 shown in Fig. 4, wherein the trigger electrode 2 with
Can be between the receiving electrode more than 1 pair or multipair 1 be arranged), microprocessor module 3, control button 4, signal processing mould
Block and analog switch module 5；The touch screen driving electrodes signal deteching circuit 1 is equipped with multiple driving electricity for touch screen
The detection circuit electrode that pole is correspondingly connected with is (that is, a touch screen driving electrodes signal deteching circuit 1 is equipped with multiple described
Detection circuit electrode, and can be between the observation circuit electrode and the driving electrodes more than 1 pair or multipair 1 setting, institute
Detection circuit electrode is stated as shown in Header 8 in Fig. 4)；The control button 4 is electrically connected with the microprocessor module 3, is used
In by the control button 4 press and then trigger corresponding trigger point on the touch screen；The analog switch module 5 is divided
It is not electrically connected with the signal processing module, touch screen driving electrodes signal deteching circuit 1, trigger electrode 2 and microprocessor module 3
It connects, the signal processing module is also electrically connected with the touch screen driving electrodes signal deteching circuit 1；For according to micro- place
The corresponding detection circuit electrode in the trigger point is passed through the signal processing module and triggering electricity by the turn-on command for managing device module 3
Pole is connected and maintains certain time, and completes touch operation.Specifically, in conducting, what the detection circuit electrode detection arrived
Touch screen itself driving electrodes signal can be amplified by the signal processing module, while by the amplified touch screen
Itself driving electrodes signal is transferred to the trigger electrode 2, and when curtain scanning is to current location, just can recognize simulation touching
The operation touched.Preferably, the analog switch module 5 is digital control analog switch (HC4051 in Fig. 4).
Specifically, presetting different control button 4 and specific region (the i.e. corresponding Petting Area on the touch screen
The touch screen driving electrodes signal deteching circuit 1 and trigger electrode 2 in domain) corresponding relationship；When user press it is described control by
After key 4, microprocessor module 3 controls analog switch module 5 and is connected, since control analog switch module 5 has been connected in advance
The corresponding detecting electrode in specific region and trigger electrode, therefore the detecting electrode and trigger electrode are led by signal amplification circuit
Lead to and maintain after a certain period of time, when screen scanning is to current location, since the high-frequency signal on trigger electrode is by amplification
Strong signal, so even if human body does not contact touch screen, when surface capacitance does not change, on the receiving electrode inside touch screen
The signal strength received can also become by force, that is, judge current location by finger down.Reach microprocessor simultaneously not needing
Detection touch screen driving electrodes signal can trigger the purpose of touch screen, so to the speed of the microprocessor module 3 used
It is required that it is very low, and circuit is simple, mass production easy to accomplish and less trouble.
Achieve the purpose that be not required to that touch screen operation can also be carried out with finger contact touch screen, cured to realize and work as
Touch screen inconvenient to use or touch screen is not reached under some cases such as institute, factory industry control, mobile-phone game handle, but
It is and needs to control under the scene of touch screen, still is able to advantageously carry out the technical effect of touch screen operation.
As shown in Figure 1, Figure 2 and shown in Fig. 4, in some embodiments, touch screen passive triggering device as the aforementioned, the signal
Processing module includes: signal amplification circuit 6 and booster circuit 7 interconnected；
The booster circuit 7 is also electrically connected with power module；
The signal amplification circuit 6 is also electric with the touch screen driving electrodes signal deteching circuit 1 and analog switch module 5
Connection, the signal detected for amplifying the touch screen driving electrodes signal deteching circuit 1.
It is also for enabling signals to according to the boosting electricity that the signal amplification circuit 6 is connect with the booster circuit 7
The boost function on road 6 is boosted and is amplified to touch screen itself driving electrodes signal；And then amplified touch screen can be made
Itself driving electrodes signal is transmitted to the receiving electrode of specific touch screen, it is thus possible to allow screen to detect to trigger in touch screen
The push action in region corresponding with the control button 4.
It preferably, further include the second analog switch module；The second analog switch module and touch screen driving electricity
Pole signal deteching circuit 1 is electrically connected；
The second analog switch module can choose which root detection circuit electrode opened, and the analog switch module can be with
Which root trigger electrode selection opens.And the second analog switch module is one and works in low pressure 3.3V, and model
The chip of HC4051；The analog switch module 5 is one and works in ± 10V, and the chip of model CD40151.
In some embodiments, touch screen passive triggering device as the aforementioned, further includes: power module；Specifically, described
Power module is used to provide the power supply of system operation and to signal processing module voltage supplied signal；
The power module is electrically connected with the signal processing module, microprocessor module 3 and analog switch module 5,
And it is powered.In general, the power module is the power supply of the system including the microprocessor module 3 using 3.3V
Pressure stabilizing power supply；
As shown in Figure 1, in some embodiments, touch screen passive triggering device as the aforementioned, the power module includes:
Electric power management circuit 8 and battery 9；
The electric power management circuit 8 respectively with the battery 9, booster circuit 7, analog switch module 5 and microprocessor mould
Block 3 is electrically connected.
Specifically, as shown in figure 3, the electric power management circuit 8 is provided for each functional module into the present apparatus
The working voltage of 3.3V, and when the battery 9 is that rechargeable battery makes to further include providing charging indicator light function.
In some embodiments, the battery 9 is rechargeable lithium battery.Electricity can be effectively reduced using rechargeable lithium battery
The waste in pond, it is energy saving, reduce waste.
In some embodiments, touch screen passive triggering device as the aforementioned, the power module include further include: lithium electricity
Protect circuit 10 and lithium battery charging management circuit 11 in pond；
The lithium battery protection circuit 10 and lithium battery charging management circuit 11 are electrically connected with the battery 9.
And a kind of preferred, electrical block diagram of lithium battery protection circuit 10 and lithium battery charging management circuit 11
As shown in figure 5, the lithium battery charging management circuit 11 preferably uses USB TYPE C interface.
In some embodiments, touch screen passive triggering device as the aforementioned, the touch screen driving electrodes signal detection
Circuit 1 and trigger electrode 2 are set to the touch screen surface.Preferably, the touch screen driving electrodes signal deteching circuit 1 and touching
Power generation pole 2 is set to the marginal position of the touch screen surface, thus can reduce blocking to the display content of the touch screen
And it influences.
In some embodiments, touch screen passive triggering device as the aforementioned, the touch screen driving electrodes signal detection
Circuit 1 and trigger electrode 2 are respectively FPC flexible circuit board, have the transparent glass of conductive coating or have the thin transparent of conductive coating
One of film.Can be had using the touch screen driving electrodes signal deteching circuit 1 and trigger electrode 2 of above-mentioned material good
Bright property and triggering effect.
In some embodiments, touch screen passive triggering device as the aforementioned, the booster circuit 7 is can be by the power supply
The voltage amplification of module to positive and negative 10V voltage or positive 20V voltage processing module.Voltage height is conducive to improve trigger sensitivity
With the triggering on screen when coated with protective film.
In some embodiments, touch screen passive triggering device as the aforementioned, the microprocessor module 3 use model
The microprocessor of HT32F52331.The microprocessor of the model has processing capacity strong, and power consumption is lower and long service life, operation
Stable feature can effectively improve the service life and operation processing capacity of single unit system.
Preferably, as shown in fig. 7, being additionally provided with corresponding LED light, thus intuitively user can be prompted to fill accordingly
Set operating condition；The application also provides the electrical block diagram of key part and the electrical block diagram point of rocking bar simultaneously
Not as shown in Fig. 6 and Fig. 8,
Obviously, those skilled in the art should be understood that the control function in above-mentioned the utility model pertains only to instruct
Or the processing of electric signal, it is not related to specific software and data processing.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of touch screen passive triggering device characterized by comprising touch screen driving electrodes signal deteching circuit (1) is used
In the trigger electrode (2) that the receiving electrode with touch screen is correspondingly connected with, microprocessor module (3), control button (4), at signal
Manage module and analog switch module (5)；
The touch screen driving electrodes signal deteching circuit (1) is equipped with what multiple driving electrodes for touch screen were correspondingly connected with
Detection circuit electrode；
The control button (4) is electrically connected with the microprocessor module (3), for by pressing the control button (4)
And then trigger corresponding trigger point on the touch screen；
The analog switch module (5) is electric with the signal processing module, trigger electrode (2) and microprocessor module (3) respectively
Connection, the signal processing module are also electrically connected with the touch screen driving electrodes signal deteching circuit (1)；For according to
The turn-on command of microprocessor module (3) by the corresponding detection circuit electrode in the trigger point by the signal processing module and
Trigger electrode is connected and maintains certain time, and completes touch operation.
2. touch screen passive triggering device according to claim 1, which is characterized in that the signal processing module includes:
Signal amplification circuit (6) interconnected and booster circuit (7)；
The signal amplification circuit (6) also with the touch screen driving electrodes signal deteching circuit (1) and analog switch module (5)
Electrical connection, the signal detected for amplifying the touch screen driving electrodes signal deteching circuit (1).
3. touch screen passive triggering device according to claim 2, which is characterized in that further include: power module；The electricity
Source module is electrically connected with the signal processing module, microprocessor module (3) and analog switch module (5), and is powered.
4. touch screen passive triggering device according to claim 3, which is characterized in that the power module includes: power supply
Manage circuit (8) and battery (9)；
The electric power management circuit (8) respectively with the battery (9), booster circuit (7), analog switch module (5) and micro process
Device module (3) electrical connection.
5. touch screen passive triggering device according to claim 4, which is characterized in that the battery (9) is chargeable lithium
Battery.
6. touch screen passive triggering device according to claim 5, which is characterized in that the power module includes also wrapping
It includes: lithium battery protection circuit (10) and lithium battery charging management circuit (11)；
The lithium battery protection circuit (10) and lithium battery charging management circuit (11) are electrically connected with the battery (9).
7. touch screen passive triggering device according to claim 1, which is characterized in that the touch screen driving electrodes signal
Detection circuit (1) and trigger electrode (2) are set to the touch screen surface.
8. touch screen passive triggering device according to claim 1, which is characterized in that the touch screen driving electrodes signal
Detection circuit (1) and trigger electrode (2) are respectively FPC flexible circuit board, the transparent glass for having conductive coating or have a conductive coating
One of transparent membrane.
9. touch screen passive triggering device according to claim 3, which is characterized in that the booster circuit (7) is that can incite somebody to action
The voltage amplification of the power module to positive and negative 10V voltage or positive 20V voltage processing module.
10. touch screen passive triggering device according to claim 1, which is characterized in that the microprocessor module (3) is adopted
With the microprocessor of model HT32F52331.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821738456.8U CN208903232U (en) | 2018-10-25 | 2018-10-25 | Touch screen passive triggering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821738456.8U CN208903232U (en) | 2018-10-25 | 2018-10-25 | Touch screen passive triggering device |
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| Publication Number | Publication Date |
|---|---|
| CN208903232U true CN208903232U (en) | 2019-05-24 |
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ID=66576818
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| CN201821738456.8U Active CN208903232U (en) | 2018-10-25 | 2018-10-25 | Touch screen passive triggering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144329A (en) * | 2018-10-25 | 2019-01-04 | 深圳市谷粒科技有限公司 | Touch screen passive triggering device |
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2018
- 2018-10-25 CN CN201821738456.8U patent/CN208903232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144329A (en) * | 2018-10-25 | 2019-01-04 | 深圳市谷粒科技有限公司 | Touch screen passive triggering device |
| CN109144329B (en) * | 2018-10-25 | 2025-01-07 | 深圳市谷粒科技有限公司 | Touch screen passive trigger device |
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