CN110568960A - Piezoelectric touch feedback device - Google Patents
Piezoelectric touch feedback device Download PDFInfo
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- CN110568960A CN110568960A CN201910834424.0A CN201910834424A CN110568960A CN 110568960 A CN110568960 A CN 110568960A CN 201910834424 A CN201910834424 A CN 201910834424A CN 110568960 A CN110568960 A CN 110568960A
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- Prior art keywords
- piezoelectric
- piezoelectric element
- panel
- signal
- feedback device
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- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 10
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008447 perception Effects 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 2
- 229910002113 barium titanate Inorganic materials 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000011218 segmentation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a piezoelectric touch feedback device which comprises a piezoelectric element, a substrate, a panel and a control circuit, wherein the piezoelectric element is tightly attached to the substrate through an adhesive with electric conductivity, the substrate is tightly attached to the panel through the adhesive, the substrate is positioned in the center of the panel, the control circuit comprises a signal collecting system, a signal processing system and a signal transmitting system, the control circuit acts on the panel through stress waves and transmits the stress waves to the piezoelectric element, the piezoelectric element generates electric signals through a positive piezoelectric effect, the signal collecting system and the signal processing system sense the stress waves and transmit vibration signals and prompt tone signals through the signal transmitting system, and the piezoelectric ceramic element converts the vibration signals and the prompt tone signals into mechanical vibration through an inverse piezoelectric effect. Through the mode, the vibration feedback device is simple in structure, ultrathin and low in cost, can provide vibration feedback and sound feedback, and can provide better user experience.
Description
Technical Field
The invention relates to the technical field of piezoelectric ceramics, in particular to a piezoelectric touch feedback device.
Background
with the trend of increasingly thinner consumer electronic products such as notebook computers and the like, the thickness of electronic accessories of touch control products is required to be increasingly thinner, and the traditional touch feedback uses motor vibration, so that a user can generate touch when clicking a screen.
Ceramic touch feedback technology has been gradually applied to the field, at present, there are many market demands for being thinner, more stable and more effective, unlike touch feedback keys, the piezoelectric ceramic chip structure and the piezoelectric keyboard of chinese patent application No. 201721126450.0, publication No. CN 207074994U, most touch panels have a larger area, and a larger vibration effect is required to improve the touch feeling.
Disclosure of Invention
The technical problem mainly solved by the invention is to provide a piezoelectric touch feedback device which is simple in structure, ultrathin and low in cost, can provide vibration feedback and sound feedback, and can provide better user experience.
in order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a piezoelectricity touch-control feedback device, this kind of piezoelectricity touch-control feedback device include piezoelectric element, base plate, panel and control circuit, piezoelectric element closely laminates through the adhesive that has electrically conductive ability with the base plate, and the base plate passes through adhesive and panel and closely laminates, and the base plate is located panel central point and puts, control circuit includes signal collection system, signal processing system and signal emission system, control circuit acts on the panel and transmits to piezoelectric element through stress wave on, and piezoelectric element produces the signal of telecommunication through positive piezoelectric effect, and signal collection system and signal processing system perception stress wave are through signal emission system transmission vibration signal and prompt tone signal, and piezoelectric ceramic element converts vibration signal and prompt tone signal into mechanical vibration through inverse piezoelectric effect.
Preferably, the piezoelectric element is a single-layer ceramic structure, the thickness of the piezoelectric element is between 0.09mm and 0.21mm, the piezoelectric element is rectangular or circular, and the size of the rectangle is as follows: length: not less than 30mm, wide: less than or equal to 30 mm; circular size: phi is more than or equal to 30mm, the piezoelectric element is of a non-independent stone structure, and the cost is low.
Preferably, the piezoelectric element and the substrate are provided with a common electrode on their surfaces to be bonded, and the piezoelectric element is provided with a divided electrode on a surface thereof facing away from the common electrode, the divided electrode and the common electrode forming a long and narrow area sensor portion and a large area vibration feedback portion.
Preferably, the piezoelectric element is covered with an insulating layer except for the part connected with the electrode, and the insulating layer is made of UV glue or polyimide.
Preferably, the piezoelectric element material is PZT-based piezoelectric ceramics or barium titanate-based, potassium sodium niobate-based lead-free piezoelectric ceramics; the substrate material is brass, stainless steel or carbon fiber board engineering material; the panel material is acrylic, glass fiber plate, aluminum alloy or stainless steel material.
Preferably, the long edge of the panel is fixed, and when the driving voltage is 100V, the vibration displacement of most positions of the panel is more than or equal to 15 micrometers, the acceleration is more than or equal to 2.5g, g: gravity acceleration, the sense of touch is obvious.
Preferably, the voice prompt signal output voltage of the control circuit is between-20.0V and +20V, the waveform is a sine wave, the frequency is between 500Hz and 1500Hz, and the voice prompt signal output voltage is determined by the structure of the piezoelectric element and the customer experience.
Preferably, the vibration signal output voltage of the control circuit is between-20.0V and +100V, the waveform is triangular wave or trapezoidal wave, the frequency is between 200Hz and 250Hz, and the structure of the piezoelectric element and the customer experience determine.
Compared with the prior art, the invention has the beneficial effects that: simple structure, it is ultra-thin, with low costs, can provide sound feedback when providing vibration feedback, can provide better user experience.
Drawings
Fig. 1 is a schematic structural diagram of a piezoelectric touch feedback device.
fig. 2 is a schematic structural diagram of an embodiment.
fig. 3 is a schematic structural diagram of the second embodiment.
Fig. 4 is a schematic diagram of a third structure of the embodiment.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention can be more readily understood by those skilled in the art, and the scope of the invention will be more clearly defined.
Referring to fig. 1, an embodiment of the present invention includes:
The utility model provides a piezoelectricity touch-control feedback device, this kind of piezoelectricity touch-control feedback device includes piezoelectric element 1, base plate 2, panel 3 and control circuit, piezoelectric element 1 closely laminates through adhesive that has the conductivity with base plate 2, and base plate 2 closely laminates through adhesive and panel 3, and base plate 2 is located panel central point and puts, control circuit includes signal collection system, signal processing system and signal emission system, control circuit acts on panel 3 and transmits piezoelectric element 1 through the stress wave, and piezoelectric element 1 produces the signal of telecommunication through the direct piezoelectric effect, and signal collection system and signal processing system perception stress wave are through signal emission system transmission vibration signal and suggestion tone signal, and piezoelectric ceramic element 1 converts vibration signal and suggestion tone signal into mechanical vibration through the reverse piezoelectric effect.
The voice prompt signal output voltage of the control circuit is between-20.0V and +20V, the waveform is a sine wave, the frequency is between 500Hz and 1500Hz, and the structure of the piezoelectric element 1 and the customer experience determine.
The vibration signal output voltage of the control circuit is between-20.0V and +100V, the waveform is triangular wave or trapezoidal wave, the frequency is between 200Hz and 250Hz, and the structure of the piezoelectric element 1 and the customer experience determine.
The first embodiment is as follows:
As shown in fig. 2, the piezoelectric element 1 has a single-layer ceramic structure, the material of the piezoelectric element 1 is PZT-based piezoelectric ceramic, the piezoelectric element 1 has a rectangular shape, and the dimensions of the rectangular shape are as follows: length: 67mm, width: 21mm, the thickness is 0.15mm, the piezoelectric element 1 is of a non-independent stone structure, and the cost is low; the substrate 2 is made of brass, the substrate 2 is rectangular, and the rectangular size is as follows: length: 70mm, width: 23mm, thickness: 0.10 mm; the 3 materials of panel are ya keli, panel 3 is the rectangle form, and the rectangle size: length: 110mm, width: 60mm and 1.5mm in thickness.
The laminating surface of the piezoelectric element 1 and the substrate 2 is provided with a common electrode, the surface of the piezoelectric element 1, which is opposite to the common electrode, is provided with a segmentation electrode, the segmentation electrode and the common electrode form a long and narrow area sensor part 102 and a large-area vibration feedback part 101, the long edge of the panel 3 is fixed, when the driving voltage is 100V, the vibration displacement of most positions of the panel 3 is more than or equal to 15 micrometers, and the acceleration is more than or equal to 2.5g, g: the gravity acceleration and the touch feeling are obvious; the piezoelectric element 1 is covered with an insulating layer except for the part connected with the electrode, and the insulating layer is made of UV glue.
The second embodiment is as follows:
As shown in fig. 3, the piezoelectric element 1 has a single-layer ceramic structure, the material of the piezoelectric element 1 is PZT-based piezoelectric ceramic, the piezoelectric element 1 has a rectangular shape, and the dimensions of the rectangular shape are as follows: length: 67mm, width: 16mm, the thickness is 0.15mm, the piezoelectric element 1 is of a non-independent stone structure, and the cost is low; the substrates 201 and 202 are made of brass, the substrates are rectangular, and the rectangular dimensions are as follows: length: 70mm, width: 18mm, thickness: 0.10 mm; the 3 materials of panel are ya keli, panel 3 is the rectangle form, and the rectangle size: length: 110mm, width: 60mm and 1.5mm in thickness.
The laminating surface of the piezoelectric element 1 and the substrates 201 and 202 is provided with a common electrode, the surface of the piezoelectric element 1 opposite to the common electrode is provided with a segmentation electrode, the segmentation electrode and the common electrode form long and narrow area sensor parts 101 and 104 and large area vibration feedback parts 102 and 103, the long edge of the panel 3 is fixed, when the driving voltage is 100V, the vibration displacement of most positions of the panel 3 is more than or equal to 15 micrometers, and the acceleration is more than or equal to 2.5g and g: the gravity acceleration and the touch feeling are obvious; the piezoelectric element 1 is covered with an insulating layer except for the part connected with the electrode, and the insulating layer is made of UV glue.
The third concrete embodiment:
As shown in fig. 4, the piezoelectric element 1 has a single-layer ceramic structure, the material of the piezoelectric element 1 is PZT-based piezoelectric ceramic, the piezoelectric element 1 is circular, and the circular size: diameter: 40mm, thickness: 0.15mm, the piezoelectric element 1 is of a non-independent stone structure, and the cost is low; the base plates 201 and 202 are made of brass, the base plate 2 is circular, and the circular size is as follows: diameter: 45mm, thickness: 0.10 mm; the 3 materials of panel are ya keli, panel 3 is the rectangle form, and the rectangle size: length: 110mm, width: 60mm and 1.5mm in thickness.
The laminating surface of the piezoelectric element 1 and the substrates 201 and 202 is provided with a common electrode, the surface of the piezoelectric element 1 opposite to the common electrode is provided with a segmentation electrode, the segmentation electrode and the common electrode form long and narrow area sensor parts 102 and 104 and large-area vibration feedback parts 101 and 103, the long edge of the panel 3 is fixed, when the driving voltage is 100V, the vibration displacement of most positions of the panel 3 is more than or equal to 15 micrometers, and the acceleration is more than or equal to 2.5g and g: the gravity acceleration and the touch feeling are obvious; the piezoelectric element 1 is covered with an insulating layer except for the part connected with the electrode, and the insulating layer is made of UV glue.
The piezoelectric touch feedback device is simple in structure, ultrathin, low in cost, capable of providing vibration feedback and sound feedback, and capable of providing better user experience.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A piezoelectric touch feedback device is characterized in that: this kind of piezoelectricity touch-control feedback device includes piezoelectric element, base plate, panel and control circuit, piezoelectric element is through having the adhesive of electrically conductive ability and the base plate closely laminating, and the base plate passes through the adhesive and closely laminates with the panel, and the base plate is located the panel central point and puts, control circuit includes signal collection system, signal processing system and signal emission system, control circuit through stress wave use on the panel and transmit to piezoelectric element, piezoelectric element produces the signal of telecommunication through positive piezoelectric effect, signal collection system and signal processing system perception stress wave and through signal emission system transmission vibration signal and prompt tone signal, piezoelectric ceramic element is through conversing piezoelectric effect with vibration signal and prompt tone signal conversion for mechanical vibration.
2. The piezoelectric touch feedback device of claim 1, wherein: the piezoelectric element is of a single-layer ceramic structure, the thickness of the piezoelectric element is 0.09-0.21 mm, the piezoelectric element is rectangular or circular, and the size of the rectangle is as follows: length: not less than 30mm, wide: less than or equal to 30 mm; circular size: phi is more than or equal to 30mm, the piezoelectric element is of a non-independent stone structure, and the cost is low.
3. The piezoelectric touch feedback device of claim 1, wherein: the piezoelectric element and the substrate joint surface are provided with a common electrode, the piezoelectric element is provided with a split electrode on the surface opposite to the common electrode, and the split electrode and the common electrode form a long and narrow area sensor part and a large-area vibration feedback part.
4. The piezoelectric touch feedback device of claim 1, wherein: the piezoelectric element is covered with an insulating layer except for the part connected with the electrode, and the insulating layer is made of UV glue or polyimide.
5. The piezoelectric touch feedback device of claim 1, wherein: the piezoelectric element material is PZT-based piezoelectric ceramics or barium titanate-based and potassium sodium niobate-based lead-free piezoelectric ceramics; the substrate material is brass, stainless steel or carbon fiber board engineering material; the panel material is acrylic, glass fiber plate, aluminum alloy or stainless steel material.
6. The piezoelectric touch feedback device of claim 1, wherein: the long edge of the panel is fixed, when the driving voltage is 100V, the vibration displacement of most positions of the panel is more than or equal to 15 micrometers, and the acceleration is more than or equal to 2.5g, g: gravity acceleration, the sense of touch is obvious.
7. The piezoelectric touch feedback device of claim 1, wherein: the voice prompt signal output voltage of the control circuit is between-20.0V and +20V, the waveform is a sine wave, the frequency is between 500Hz and 1500Hz, and the voice prompt signal output voltage is determined by the piezoelectric element structure and the customer experience.
8. The piezoelectric touch feedback device of claim 1, wherein: the vibration signal output voltage of the control circuit is between-20.0V and +100V, the waveform is triangular wave or trapezoidal wave, the frequency is between 200Hz and 250Hz, and the vibration signal output voltage is determined by the structure of the piezoelectric element and the customer experience.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834424.0A CN110568960A (en) | 2019-09-04 | 2019-09-04 | Piezoelectric touch feedback device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834424.0A CN110568960A (en) | 2019-09-04 | 2019-09-04 | Piezoelectric touch feedback device |
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| CN110568960A true CN110568960A (en) | 2019-12-13 |
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| CN201910834424.0A Pending CN110568960A (en) | 2019-09-04 | 2019-09-04 | Piezoelectric touch feedback device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159440A1 (en) * | 2022-02-24 | 2023-08-31 | 京东方科技集团股份有限公司 | Vibration panel and touch display apparatus |
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|---|---|---|---|---|
| WO2015106413A1 (en) * | 2014-01-16 | 2015-07-23 | 志丰电子股份有限公司 | Touch feedback vibration device for panel |
| CN204928795U (en) * | 2015-09-25 | 2015-12-30 | 北京经纬恒润科技有限公司 | Vibration feedback keying circuit , button and door handle switch |
| CN105843406A (en) * | 2016-06-01 | 2016-08-10 | 杨杰 | Simulated epidermis with built-in tactile feedback |
| US20180009003A1 (en) * | 2015-03-05 | 2018-01-11 | Jung-Hoon Kim | Piezoelectric element vibration apparatus that provides real-time vibration feedback |
| CN207074994U (en) * | 2017-09-04 | 2018-03-06 | 苏州攀特电陶科技股份有限公司 | Piezoelectric ceramics chip architecture and piezoelectric keyboard |
| CN109600498A (en) * | 2017-09-30 | 2019-04-09 | 南昌欧菲生物识别技术有限公司 | Housing unit and electronic device |
| CN210627152U (en) * | 2019-09-04 | 2020-05-26 | 昆山龙朋精密电子有限公司 | Piezoelectric touch feedback device |
-
2019
- 2019-09-04 CN CN201910834424.0A patent/CN110568960A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015106413A1 (en) * | 2014-01-16 | 2015-07-23 | 志丰电子股份有限公司 | Touch feedback vibration device for panel |
| US20180009003A1 (en) * | 2015-03-05 | 2018-01-11 | Jung-Hoon Kim | Piezoelectric element vibration apparatus that provides real-time vibration feedback |
| CN204928795U (en) * | 2015-09-25 | 2015-12-30 | 北京经纬恒润科技有限公司 | Vibration feedback keying circuit , button and door handle switch |
| CN105843406A (en) * | 2016-06-01 | 2016-08-10 | 杨杰 | Simulated epidermis with built-in tactile feedback |
| CN207074994U (en) * | 2017-09-04 | 2018-03-06 | 苏州攀特电陶科技股份有限公司 | Piezoelectric ceramics chip architecture and piezoelectric keyboard |
| CN109600498A (en) * | 2017-09-30 | 2019-04-09 | 南昌欧菲生物识别技术有限公司 | Housing unit and electronic device |
| CN210627152U (en) * | 2019-09-04 | 2020-05-26 | 昆山龙朋精密电子有限公司 | Piezoelectric touch feedback device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159440A1 (en) * | 2022-02-24 | 2023-08-31 | 京东方科技集团股份有限公司 | Vibration panel and touch display apparatus |
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