CN106505983A - Touch sensible switch and electronic installation - Google Patents
Touch sensible switch and electronic installation Download PDFInfo
- Publication number
- CN106505983A CN106505983A CN201610845725.XA CN201610845725A CN106505983A CN 106505983 A CN106505983 A CN 106505983A CN 201610845725 A CN201610845725 A CN 201610845725A CN 106505983 A CN106505983 A CN 106505983A
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- China
- Prior art keywords
- layer
- material layer
- piezoelectric material
- touch sensible
- receiving unit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
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- Electronic Switches (AREA)
- Push-Button Switches (AREA)
Abstract
A kind of touch sensible switch, including a cover plate, a signal receiving unit and a signal transmitting unit, the signal receiving unit and the signal transmitting unit are formed in the same side of cover plate, the signal receiving unit includes one first piezoelectric material layer, and the intrinsic frequency of first piezoelectric material layer is fR；The signal transmitting unit includes one second piezoelectric material layer, and the intrinsic frequency of second piezoelectric material layer is fT, fRAnd fTMeet following relation：fR<fT×（1‑10%）.The present invention also provides a kind of electronic installation switched using the touch sensible.
Description
Technical field
The present invention relates to a kind of touch sensible switch and the electronic installation switched using the touch sensible.
Background technology
In recent years, the switch key or Home key of electronic installation such as mobile phone, computer, game machine etc., generally adopts sound wave
Formula touch sensible switch replaces mechanical switch and capacitance-type switch, sound wave type touch sensible switch to have life-span length, resolution high
The advantages of.Sound wave type touch sensible switch generally includes a signal receiving unit and a signal transmitting unit, and during work, signal is sent out
Unit is sent to send acoustic signals, the acoustic signals reach interface through signal receiving unit, reach the acoustic signals portion at interface
Divide and touched finger, partly reflex to signal receiving unit, signal receiving unit receives the acoustic signals for reflecting simultaneously
Be converted to electric signal and form touch information.Have now been found that, decay of the acoustic signals in touch sensible switch internal transmitting procedure
The sensitivity of extreme influence touch sensible switch.
Content of the invention
In view of the foregoing, it is necessary to which a kind of touch sensible switch for reducing sonic transmissions decay is provided.
A kind of touch sensible switch, including a cover plate, a signal receiving unit and a signal transmitting unit, the signal connects
The same side that unit and the signal transmitting unit are formed in cover plate is received, the signal receiving unit includes one first piezoelectric
Layer, the intrinsic frequency of first piezoelectric material layer is fR；The signal transmitting unit includes one second piezoelectric material layer, described
The intrinsic frequency of the second piezoelectric material layer is fT, fRAnd fTMeet following relation：fR<fT×（1-10%）.
A kind of electronic installation, the electronic installation are switched with a touch sensible, and the touch sensible switch, including a lid
Plate, a signal receiving unit and a signal transmitting unit, the signal receiving unit and the signal transmitting unit are formed in lid
The same side of plate, the signal receiving unit include one first piezoelectric material layer, the intrinsic frequency of first piezoelectric material layer
For fR；The signal transmitting unit includes one second piezoelectric material layer, and the intrinsic frequency of second piezoelectric material layer is fT, fR
And fTMeet following matching relationship：fR<fT×（1-10%）.
Compared to prior art, the touch sensible of the present invention is switched by signal receiving unit and signal transmitting unit pressure
The intrinsic frequency of material layer carries out matching optimization, and the acoustic signals that reduction signal transmitting unit sends are opened in the touch sensible
Decay in portion's transmitting procedure inside the Pass, and then effectively improve the sensitivity of touch sensible switch.
Description of the drawings
Cross-sectional views of the Fig. 1 for the touch sensible switch of first embodiment of the invention.
Fig. 2 is having, is becoming without the output voltage in the case of extraneous touch for the touch sensible switch of first embodiment of the invention
The experimental results datagram of change.
Fig. 3 is output voltage of the touch sensible switch of a comparative example of the invention in the case of having, touching without the external world
The experimental results figure of change.
Fig. 4 is the structural representation of the electronic installation of the touch sensible switch for applying Fig. 1.
High-level schematic functional block diagrams of the Fig. 5 for touch sensible switch in the electronic installation of Fig. 4.
Main element symbol description
Touch sensible switch 1
Electronic installation 2
Cover plate 11,21
First flexible printed circuit board 12
Signal receiving unit 13
Separation layer 14
Signal transmitting unit 15
Second flexible printed circuit board 16
Contact surface 110
First electrode layer 131
The second electrode lay 132
3rd electrode layer 151
4th electrode layer 152
First piezoelectric material layer 133
Second piezoelectric material layer 153
Viewing area 211
Non-display area 212
Control module 4
Message processing module 41
Memory module 42
Signal receiving element 411
Data analysis element 412
Instruction producing element 413
Specific examples below will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
The touch sensible switch that the present invention is provided is by its signal receiving unit of regulation and the piezoresistive material of signal transmitting unit
Intrinsic frequency f of the bed of materialRAnd fTBetween relation, reduce acoustic signals in the touch sensible switch internal transmitting procedure
Decay.The fRAnd fTMeet following relation：fR<fT×（1-10%）.
Accompanying drawing is coordinated to be described in detail below by way of specific embodiment.
Fig. 1 is referred to, Fig. 1 is the structural representation of first embodiment of the invention touch sensible switch 1.Touch sensible is switched
1 switchs for sound wave type touch sensible, and which includes a cover plate 11, one first flexible printed circuit board 12, being cascading
Signal receiving unit 13, a separation layer 14, a signal transmitting unit 15 and one second flexible printed circuit board 16.The cover plate 11
Surface away from the signal receiving unit is the contact surface 110 that user's finger is touched.The signal receiving unit 13 leads to
Cross the first flexible printed circuit board 12 and external circuit（Not shown）It is electrical connected, the signal transmitting unit 15 is soft by second
Property printed circuit board (PCB) 16 and external circuit（Not shown）It is electrical connected.The signal receiving unit 13 includes a first electrode layer
131st, a second electrode lay 132 and one first pressure being located between the first electrode layer 131 and the second electrode lay 132
Material layer 133, the signal transmitting unit 15 include one the 3rd electrode layer 151, one the 4th electrode layer 152 and are located in described
One second piezoelectric material layer 153 between 3rd electrode layer 151 and the 4th electrode layer 152.Second piezoelectric material layer
153 intrinsic frequency fTIntrinsic frequency f with first piezoelectric material layer 133RMeet relation：fR<fT×（1-10%）.
First piezoelectric material layer 133 and 153 material of the second piezoelectric material layer can be but be not limited to following material
In one kind：Poly- vinylidene difluoride（Polyvinylidene Fluoride, PVDF）, barium titanate, lead titanates, lead zirconate titanate
(PZT), tantalum scandium acid plumbum（PST）, quartz and vinylidene fluoride and trifluoro-ethylene copolymer.The first electrode layer 131, second
Electrode layer 132, the 3rd electrode layer 151, the 4th electrode layer 152 can be made up of the preferable metal material of conductance, for example, aluminium,
The high conductivity materials such as copper, nickel, gold, can with by such as transparent oxide conductive material (such as tin indium oxide, indium zinc oxide), silver,
The conductive material such as CNT or Graphene is made, but is not limited to above material.
The separation layer 14 can be electrically insulating material, such as electric insulation resin etc..It is preferred that the thickness of the separation layer 14 takes
The signal receiving unit and 1/10th of thickness smaller thickness both the signal transmitting unit.
When touch sensible switch 1 works, external circuit（Not shown）By second flexible printed circuit board 16 pairs
3rd electrode layer 151 of the signal transmitting unit 15 and 152 applied voltage of the 4th electrode layer, make to form electric field therebetween,
Second piezoelectric material layer 153 produces vibration transmitting acoustic signals under electric field action, and the acoustic signals are connect through signal
Receive unit 13 to reach the contact surface 110 of the cover plate 11 and reflect to form after reflected signal again by the letter through the contact surface 110
Number receiving unit 13 is received.The signal receiving unit 13 receives signal and is converted into electric signal by described first soft
Property printed circuit board (PCB) 12 is transmitted to external circuit（Not shown）.External circuit is analyzed to be had, electric without the output in the case of extraneous touch
The buckling touch command that formed is transmitted to handset program again and realizes mobile phone Home key function, for example, return homepage.
In the present embodiment, the material of second piezoelectric material layer 153 and first piezoelectric material layer 133 is zirconium
Lead titanates（PZT）.Intrinsic frequency f of second piezoelectric material layer 153TFor 2.85MHz, first piezoelectric material layer 133
Intrinsic frequency fRFor 2.5MHz, i.e. fRAnd fTMeet relation：fR<fT×（1-10%）.
Fig. 2 is referred to, Fig. 2 is that the touch sensible switch 1 is having, changing without the output voltage in the case of extraneous touch
Experimental results datagram.Pass through second flexible printed circuit board, 16 pairs of signal transmitting units using an oscillograph
Under 15 input different frequencies（2.60MHz~3.44MHz）Voltage signal, while pass through first flexible printed circuit board 12
Receive the output signal of the signal receiving unit 13.In Fig. 2, when waveform A is that the contact surface 110 is touched without the external world, described
The output voltage of signal receiving unit 13；When waveform B has extraneous touch for the contact surface 110, the signal receiving unit 13
Output voltage；When waveform C does not receive extraneous touch and receive extraneous touch for the contact surface 110, the signal receives list
The output voltage rate of change of unit 13.It is seen that after the contact surface 110 receives extraneous touch, the signal receives single
The output voltage of unit has significant change.
Fig. 3 is referred to, Fig. 3 switchs the output electricity in the case of having, touching without the external world for the touch sensible of comparative example
The experimental results figure of buckling.Touch sensible switch and the touch sensible of the comparative example switchs 1 structure one
Cause, distinctive points are only that, intrinsic frequency f of the second piezoelectric material layer of the touch sensible switch of the comparative exampleT' and the
Intrinsic frequency f of one piezoelectric material layerR' identical, it is 2.5MHz.When waveform A ' is that the contact surface is touched without the external world, described
The output voltage of signal receiving unit；Waveform B ' when having extraneous touch for the contact surface, the output of the signal receiving unit
Voltage；When waveform C ' does not receive extraneous touch and receives extraneous touch for the contact surface, the output of the signal receiving unit
Voltage change ratio.It is seen that after the contact surface receives extraneous touch, the output voltage letter of the signal receiving unit
Number change is not obvious.
Please refer to Fig. 2 and Fig. 3, under the external voltage signal of same frequency, the signal of touch sensible switch 1 is received
Unit 13 has bigger output voltage compared to the signal receiving unit of the touch sensible switch of comparative example；In same output
At voltage change ratio（Such as -5%）, touch sensible switch 1 is switched compared to the touch sensible of comparative example broader response frequency
Rate scope.This conclusion is set up in the case of having, touching without the external world.It can thus be seen that the touch sensible switch 1 can be effective
Reduce decay of the acoustic signals in the touch sensible switch internal transmitting procedure, so as to have more sensitive touch sensible work(
Energy.That is, when intrinsic frequency f of the second piezoelectric material layer of touch sensible switchTFor 2.85MHz, the first piezoelectric material layer 133
Intrinsic frequency fRFor 2.5MHz when, there is common intrinsic frequency 2.5MHz compared to the two, the touch sensible switch 1 has
More sensitive touch sensing function.
Intrinsic frequency f when the second piezoelectric material layer 153 of touch sensible switch 1TWith consolidating for the first piezoelectric material layer 133
There is frequency fRFor meeting relation fR<fT×（1-10%）Other numerical value when, same have similar touch sensible sensitivity.
Fig. 4 is referred to, Fig. 4 is the structural representation of the electronic installation 2 for applying the touch sensible switch 1 in first embodiment
Figure.The electronic installation 2 can be and be not limited to mobile phone, computer and game machine etc., and accordingly, the touch sensible switch 1 for example may be used
Using the homepage key as mobile phone（Such as Home key）, computer switch switch, recreational machine switch key etc..The electronic installation of the present embodiment
2 illustrate by taking mobile phone as an example, and the touch sensible switch 1 is illustrated by taking the Home key of the mobile phone as an example.
With continued reference to Fig. 4, the electronic installation 2 includes that a cover plate 21, the cover plate 21 have one to be used for display picture
Viewing area 211, and the non-display area 212 around the viewing area 211, the touch sensible switch 1 are arranged at the non-display area
212.Fig. 1 is schematic cross-section of the touch sensible switch 1 along I-I lines in Fig. 4.
Fig. 5 is referred to, Fig. 5 is the function that Home key function realized in the electronic installation 2 by the touch sensible switch 1
Module diagram.When the signal receiving unit 13 receives signal and is converted into electric signal by the described first flexible print
Printed circuit board 12 is transmitted to external circuit, such as a control module 4, and the control module 4 further may include memory module 42 and letter
Breath processing module 41.The touch data that the storage of memory module 42 is pre-entered, the touch data for example include pressing dynamics model
Enclose data, touch track data, lines information data, compression number data etc..The message processing module 41 is by the touch information
Carry out Treatment Analysis and be analyzed with the touch data being pre-stored within the memory module 42, and further basis point
Analysis result exports corresponding touch command.
Further, the message processing module 41 can implement work(using software function module or hardware circuit module
Can, i.e. the message processing module 41 can be realized by way of software function module, it is also possible to by the side of hardware circuit
Formula is realizing.It is appreciated that the message processing module 41 can be integrated with integrated in the electronic installation 2 of control function module
Circuit chip, such as single-chip microcomputer, central processing unit（CPU）, microcontroller etc..The functional module of the message processing module 41 includes
Signal receiving element 411, data analysis element 412 and instruction producing element 413.The signal receiving element 411 receives the touch-control
Information, and exporting to the data analysis element 412, the data analysis element 412 by the touch information carry out Treatment Analysis and with
The touch data is analyzed, and further produces analysis result and exports to the instruction producing element 413, and the instruction generates unit
Part 413 produces touch command according to the analysis result to control the Home that the handset program finally realizes the touch sensible switch 1
Key function, for example, return homepage.
Claims (10)
1. a kind of touch sensible is switched, and including a cover plate, a signal receiving unit and a signal transmitting unit, the signal is received
Unit and the signal transmitting unit are formed in the same side of cover plate, and the signal receiving unit includes one first piezoelectric
Layer, the intrinsic frequency of first piezoelectric material layer is fR；The signal transmitting unit includes one second piezoelectric material layer, described
The intrinsic frequency of the second piezoelectric material layer is fT, it is characterised in that fRAnd fTMeet following relation：fR<fT×（1-10%）.
2. touch sensible as claimed in claim 1 is switched, it is characterised in that the touch sensible switch also includes that one first is soft
Property printed circuit board (PCB), one insulation separation layer and one second flexible printed circuit board, the cover plate, the first flexible print circuit
Plate, signal receiving unit, separation layer, signal transmitting unit and the second flexible printed circuit board are cascading, the signal
Receiving unit is electrical connected with external circuit by first flexible printed circuit board, and the signal transmitting unit is by described
Second flexible printed circuit board is electrical connected with external circuit.
3. touch sensible as claimed in claim 2 is switched, it is characterised in that the signal receiving unit includes a first electrode
Layer, a second electrode lay and first piezoelectric being located between the first electrode layer and the second electrode lay
Layer, the signal transmitting unit include one the 3rd electrode layer, one the 4th electrode layer and be located in the 3rd electrode layer with described
Second piezoelectric material layer between 4th electrode layer.
4. touch sensible as claimed in claim 2 is switched, it is characterised in that the thickness of the separation layer is that the signal is received
Unit and 1/10th of thickness smaller thickness both the signal transmitting unit.
5. touch sensible as claimed in claim 1 is switched, it is characterised in that first piezoelectric material layer and second pressure
The material of material layer selects the one kind in following material respectively：Poly- vinylidene difluoride, barium titanate, lead titanates, lead zirconate titanate, tantalum
The copolymer of scandium lead plumbate, quartz and vinylidene fluoride and trifluoro-ethylene.
6. a kind of electronic installation, the electronic installation are switched with a touch sensible, and the touch sensible switch, including a lid
Plate, a signal receiving unit and a signal transmitting unit, the signal receiving unit and the signal transmitting unit are formed in lid
The same side of plate, the signal receiving unit include one first piezoelectric material layer, the intrinsic frequency of first piezoelectric material layer
For fR；The signal transmitting unit includes one second piezoelectric material layer, and the intrinsic frequency of second piezoelectric material layer is fT, its
It is characterised by, fRAnd fTMeet following matching relationship：fR<fT×（1-10%）.
7. electronic installation as claimed in claim 6, it is characterised in that the touch sensible switch also includes one first flexible print
Printed circuit board, the separation layer of an insulation and one second flexible printed circuit board, the cover plate, the first flexible printed circuit board, letter
Number receiving unit, separation layer, signal transmitting unit and the second flexible printed circuit board are cascading, and the signal receives single
Unit is electrical connected with external circuit by first flexible printed circuit board, and the signal transmitting unit is soft by described second
Property printed circuit board (PCB) is electrical connected with external circuit.
8. electronic installation as claimed in claim 7, it is characterised in that the thickness of the separation layer is the signal receiving unit
With both signal transmitting units thickness smaller's thickness 1/10th.
9. electronic installation as claimed in claim 6, it is characterised in that the signal receiving unit include a first electrode layer,
One the second electrode lay and first piezoelectric material layer being located between the first electrode layer and the second electrode lay, institute
Stating signal transmitting unit includes one the 3rd electrode layer, one the 4th electrode layer and is located in the 3rd electrode layer with the described 4th electricity
Second piezoelectric material layer between the layer of pole.
10. electronic installation as claimed in claim 6, it is characterised in that first piezoelectric material layer and second piezoelectricity
The material of material layer selects the one kind in following material respectively：Poly- vinylidene difluoride, barium titanate, lead titanates, lead zirconate titanate, tantalum scandium
Lead plumbate, quartz and vinylidene fluoride and the copolymer of trifluoro-ethylene.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845725.XA CN106505983A (en) | 2016-09-23 | 2016-09-23 | Touch sensible switch and electronic installation |
| TW105132736A TWI637596B (en) | 2016-09-23 | 2016-10-11 | Touch sensitve switch and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845725.XA CN106505983A (en) | 2016-09-23 | 2016-09-23 | Touch sensible switch and electronic installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106505983A true CN106505983A (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610845725.XA Pending CN106505983A (en) | 2016-09-23 | 2016-09-23 | Touch sensible switch and electronic installation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106505983A (en) |
| TW (1) | TWI637596B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637303B (en) * | 2017-10-11 | 2018-10-01 | 聯陽半導體股份有限公司 | Touch device and method for operating a touch device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140232665A1 (en) * | 2013-02-21 | 2014-08-21 | Htc Corporation | Electronic apparatus with a display module integrated with a touch sensor |
| TWI506501B (en) * | 2013-08-30 | 2015-11-01 | Ye Xin Technology Consulting Co Ltd | Electronic device |
| TWM478874U (en) * | 2013-09-23 | 2014-05-21 | Focaltech Systems Ltd | Capacitive touch display device |
| GB2533667B (en) * | 2014-12-23 | 2017-07-19 | Cambridge Touch Tech Ltd | Pressure-sensitive touch panel |
-
2016
- 2016-09-23 CN CN201610845725.XA patent/CN106505983A/en active Pending
- 2016-10-11 TW TW105132736A patent/TWI637596B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW201815067A (en) | 2018-04-16 |
| TWI637596B (en) | 2018-10-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180814 Address after: 610041 689 cooperation Road, hi-tech West District, Chengdu, Sichuan Applicant after: Cheng Cheng Technology (Chengdu) Co., Ltd. Applicant after: Interface Optoelectronic (Shenzhen) Co., Ltd. Address before: 518057 Room 201, building A, 1 Bay Road, Shenzhen Hong Kong cooperation zone, Qianhai, Shenzhen, Guangdong, Nanshan District Applicant before: MIICS BUSINESS CONSULTING (SHENZHEN) CO., LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170315 |