CN110319955A - Piezoelectric membrane detection device and piezoelectric film sensor - Google Patents
Piezoelectric membrane detection device and piezoelectric film sensor Download PDFInfo
- Publication number
- CN110319955A CN110319955A CN201810271729.0A CN201810271729A CN110319955A CN 110319955 A CN110319955 A CN 110319955A CN 201810271729 A CN201810271729 A CN 201810271729A CN 110319955 A CN110319955 A CN 110319955A
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- piezoelectric
- piezoelectric membrane
- film sensor
- interior zone
- piezoelectric film
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- 239000012528 membrane Substances 0.000 title claims abstract description 120
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000009527 percussion Methods 0.000 claims abstract description 75
- 239000010408 film Substances 0.000 claims description 85
- 239000010409 thin film Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 15
- 238000007689 inspection Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
Abstract
The present invention discloses a kind of piezoelectric membrane detection device and a kind of piezoelectric film sensor.The piezoelectric membrane detection device includes piezoelectric film sensor, and the piezoelectric film sensor is suitable for being mounted on touch panel, for detecting the percussion event being applied on the touch panel.The piezoelectric film sensor includes multiple piezoelectric membranes and limits an interior zone；The piezoelectric membrane detection device further includes position judgment device, and whether the detection signal that the position judgment device is suitable for being exported according to the multiple piezoelectric membrane judges the generation position of the percussion event in the interior zone of the piezoelectric film sensor.
Description
Technical field
The present invention relates to a kind of piezoelectric film sensor and the piezoelectric membrane detection device including the piezoelectric film sensor.
Background technique
In the prior art, whether piezoelectric membrane can be used for incuding is tapped in a surface with hand (for example, touching
Panel) on.When hand taps surface, mechanical wave can be generated, mechanical wave is attached to the surface of solids after surface of solids transmitting
Piezoelectric membrane can because pressure generate charge, by measure piezoelectric membrane charge can sense whether hand has percussion event
Occur.But it is only able to detect whether have percussion event by piezoelectric membrane, and the tool of percussion event generation cannot be detected
Body position.
Summary of the invention
One object of the present invention aims to solve the problem that at least one aspect of the above-mentioned problems in the prior art and defect.
According to an aspect of the present invention, a kind of piezoelectric membrane detection device is provided, comprising: piezoelectric film sensor is fitted
In being mounted on touch panel, for detecting the percussion event being applied on the touch panel, the piezoelectric film sensor
Including multiple piezoelectric membranes and limit an interior zone；The piezoelectric membrane detection device further includes position judgment device, institute
State the generation position that the detection signal that position judgment device is suitable for exporting according to the multiple piezoelectric membrane judges the percussion event
It sets whether in the interior zone of the piezoelectric film sensor.
The embodiment of an exemplary according to the present invention, the piezoelectric membrane detection device further includes signal processing device
It sets, the detection signal for exporting to the multiple piezoelectric membrane is handled；The position judgment device is suitable for according to processing
Whether detection signal afterwards judges the generation position of the percussion event in the interior zone of the piezoelectric film sensor.
The embodiment of another exemplary according to the present invention, the position judgment device are suitable for according to the detection signal
Calculate the time difference that any two piezoelectric membranes detect the percussion event；The position judgment device is suitable for basis and calculates
Time difference judge the generation position of the percussion event whether in the interior zone of the piezoelectric film sensor.
The embodiment of another exemplary according to the present invention, it is exhausted when any one time difference in the calculated time difference
When being all not more than first threshold Z1 to value, the position judgment device judges the generation position of the percussion event in the piezoelectricity
In the interior zone of thin film sensor, without in the perimeter of the piezoelectric film sensor.
The embodiment of another exemplary according to the present invention, it is exhausted when some time difference in the calculated time difference
When being greater than the second threshold Z2 bigger than the first threshold Z1 to value, the position judgment device judges the hair of the percussion event
Position is given birth to not in the interior zone of the piezoelectric film sensor, and in the perimeter of the piezoelectric film sensor.
The embodiment of another exemplary according to the present invention, the piezoelectric film sensor include: the first pressure of annular
Conductive film, the interior zone are the circular inner zone limited by first piezoelectric membrane；It is thin with circular second piezoelectricity
Film is centrally arranged in the interior zone of first piezoelectric membrane.
The embodiment of another exemplary according to the present invention calculates the first threshold Z1 according to following formula (1):
Z1=R12/V (1),
Wherein,
R12 is the radius of the inner circle of the first piezoelectric membrane of the annular,
V is propagation speed of the mechanical wave that generates on the touch panel of the percussion event in the touch panel
Degree.
The embodiment of another exemplary according to the present invention, the second threshold Z2 meet following relational expression:
Z1 < Z2 < (R11-R2)/V (2),
Wherein,
R11 is the radius of the outer circle of the first piezoelectric membrane of the annular,
R2 is the radius of circular second piezoelectric membrane.
The embodiment of another exemplary according to the present invention, the piezoelectric film sensor include: the pressure of four rectangles
Conductive film, the piezoelectric membrane of four rectangles surround a square-shaped frame, and the interior zone is by four rectangles
The square inner region that piezoelectric membrane limits.
The first threshold Z1 is calculated according to the following equation in the embodiment of another exemplary according to the present invention:
Z1=L2/V (3),
Wherein,
L2 is the distance between the inner side edge of two opposite piezoelectric membranes；
V is propagation speed of the mechanical wave that generates on the touch panel of the percussion event in the touch panel
Degree.
The embodiment of another exemplary according to the present invention, the second threshold Z2 meet following relational expression (4):
Z1 < Z2 < (L1+L2)/2V (4),
Wherein,
L1 is the distance between the outer side edges of two opposite piezoelectric membranes.
According to another aspect of the present invention, a kind of piezoelectric film sensor is provided, suitable for being mounted on touch panel, is used
In the percussion event that detection is applied on the touch panel, the piezoelectric film sensor includes multiple piezoelectric membranes and limits
One interior zone.
The embodiment of another exemplary according to the present invention, the piezoelectric film sensor include: the first pressure of annular
Conductive film, the interior zone are the circular inner zone limited by first piezoelectric membrane；It is thin with circular second piezoelectricity
Film is centrally arranged in the interior zone of first piezoelectric membrane.
The embodiment of another exemplary according to the present invention, the piezoelectric film sensor include: the pressure of four rectangles
Conductive film, the piezoelectric membrane of four rectangles surround a square-shaped frame, and the interior zone is by four rectangles
The square inner region that piezoelectric membrane limits.
In the embodiment of aforementioned each exemplary of the invention, piezoelectric film sensor includes multiple piezoelectric membranes and limits
A fixed interior zone, can according to the generation position of the detection signal identification percussion event that multiple piezoelectric membranes export whether
In the interior zone of piezoelectric film sensor, so as to identify the generation position of percussion event.
By the description made for the present invention of below with reference to attached drawing, other objects and advantages of the present invention will be aobvious and easy
See, and can help that complete understanding of the invention will be obtained.
Detailed description of the invention
Fig. 1 shows the schematic diagram of the piezoelectric film sensor of first embodiment according to the present invention；
Fig. 2 shows that the schematic diagram in the perimeter of piezoelectric film sensor shown in Fig. 1 occurs for percussion event；
Fig. 3 shows that the schematic diagram in the interior zone of piezoelectric film sensor shown in Fig. 1 occurs for percussion event；
Fig. 4 shows the schematic diagram of the piezoelectric film sensor of second embodiment according to the present invention；
Fig. 5 shows that the schematic diagram in the perimeter of piezoelectric film sensor side shown in Fig. 4 occurs for percussion event；
Fig. 6 shows that the signal in the perimeter of the piezoelectric film sensor other side shown in Fig. 4 occurs for percussion event
Figure；
Fig. 7 shows that the schematic diagram in the interior zone of piezoelectric film sensor shown in Fig. 4 occurs for percussion event.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.Illustrating
In book, the same or similar drawing reference numeral indicates the same or similar component.Following reference attached drawings are to embodiment of the present invention
Illustrate to be intended to explain present general inventive concept of the invention, and is not construed as to a kind of limitation of the invention.
In addition, in the following detailed description, to elaborate many concrete details to provide to present disclosure convenient for explaining
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments without these specific details can also be with
It is carried out.In other cases, well known construction and device is diagrammatically embodied to simplify attached drawing.
A general plotting according to the present invention, provides a kind of piezoelectric membrane detection device, comprising: piezoelectric membrane sensing
Device, suitable for being mounted on touch panel, for detecting the percussion event being applied on the touch panel, the piezoelectric membrane is passed
Sensor includes multiple piezoelectric membranes and limits an interior zone；The piezoelectric membrane detection device further includes position judgement dress
It sets, the detection signal that the position judgment device is suitable for being exported according to the multiple piezoelectric membrane judges the hair of the percussion event
Whether raw position is in the interior zone of the piezoelectric film sensor.
Another general plotting according to the present invention, provides a kind of piezoelectric film sensor, suitable for being mounted on touch panel
On, for detecting the percussion event being applied on the touch panel, the piezoelectric film sensor includes multiple piezoelectric membranes
And limit an interior zone.
First embodiment
Fig. 1 shows the schematic diagram of the piezoelectric film sensor of first embodiment according to the present invention；Fig. 2 shows percussion event
The schematic diagram in the perimeter of piezoelectric film sensor shown in Fig. 1 occurs；Fig. 3 shows that percussion event occurs in Fig. 1 institute
Schematic diagram in the interior zone of the piezoelectric film sensor shown.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, which is suitable for being mounted on touch panel 10
On, for detecting the percussion event being applied on touch panel 10.
In one embodiment of the invention, a kind of piezoelectric membrane inspection of piezoelectric film sensor including diagram is disclosed
Device is surveyed, for detecting the position of percussion event generation.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, which includes multiple piezoelectric membrane C1, C2
And limit an interior zone.Aforementioned piezoelectric membrane detection device further includes position judgment device (not shown), position judgement
The detection signal that device is suitable for being exported according to multiple piezoelectric membrane C1, C2 judges whether the generation position of percussion event is thin in piezoelectricity
In the interior zone of film sensors.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, which includes: that the first piezoelectricity of annular is thin
Film C1 and circular second piezoelectric membrane C2.The interior zone of piezoelectric film sensor is the circle limited by the first piezoelectric membrane C1
Shape interior zone.Circular second piezoelectric membrane C2 is centrally arranged in the interior zone of the first piezoelectric membrane C1.
Although not shown, in one embodiment of the present of invention, aforementioned piezoelectric membrane detection device further includes signal processing device
It sets, the signal processing apparatus is for handling multiple piezoelectric membrane C1, C2 detection signal exported.Position judgment device is suitable
According to treated, whether detection signal judges the generation position of percussion event in the interior zone of piezoelectric film sensor.
As shown in figure 3, when in the interior zone that piezoelectric film sensor shown in Fig. 1 occurs for percussion event, first
Piezoelectric membrane C1 detects that the time of percussion event is T1, and the second piezoelectric membrane C2 detects that the time of percussion event is T2.That
, first and second piezoelectric membrane C1, C2 detect percussion event time difference be T2-T1.According to Fig. 1 and Fig. 3, can calculate
The absolute value of the T2-T1 out | T2-T1 | it is not more than a first threshold Z1, first threshold Z1 can be according to following formula
(1) it calculates:
Z1=R12/V (1),
Wherein,
R12 is the radius of the inner circle of the first piezoelectric membrane C1 of annular,
V is spread speed of the mechanical wave that generates on touch panel 10 of percussion event in touch panel 10.
As shown in figures 1 and 3, in the illustrated embodiment, when calculated time absolute value of the difference | T2-T1 | it is not more than
When first threshold Z1, position judgment device it may determine that tap event generation position in the inner area of piezoelectric film sensor
In domain, without in the perimeter of piezoelectric film sensor.
As shown in Fig. 2, when in the perimeter that piezoelectric film sensor shown in Fig. 1 occurs for percussion event, first
Piezoelectric membrane C1 detects that the time of percussion event is T1, and the second piezoelectric membrane C2 detects that the time of percussion event is T2.That
, first and second piezoelectric membrane C1, C2 detect percussion event time difference be T2-T1.According to Fig. 1 and Fig. 2, can calculate
The absolute value of the T2-T1 out | T2-T1 | greater than the second threshold Z2 bigger than first threshold Z1, under second threshold Z2 should meet
Relation of plane formula (2):
Z1 < Z2 < (R11-R2)/V (2),
Wherein,
R11 is the radius of the outer circle of the first piezoelectric membrane C1 of annular,
R2 is the radius of circular second piezoelectric membrane C2.
As depicted in figs. 1 and 2, in the illustrated embodiment, when calculated time absolute value of the difference | T2-T1 | be greater than than
When the big second threshold Z2 of first threshold Z1, position judgment device is not it may determine that the generation position of the event of percussion is thin in piezoelectricity
In the interior zone of film sensors, and in the perimeter of piezoelectric film sensor.
In one embodiment of the invention, which can be used for exporting multiple piezoelectric membrane C1, C2
Detection signal amplify and Shape correction.
In one embodiment of the invention, aforementioned location judgment means can be microprocessor or computer, energy
Enough generation positions that percussion event is identified by internal algorithm.
Second embodiment
Fig. 4 shows the schematic diagram of the piezoelectric film sensor of second embodiment according to the present invention；Fig. 5 shows percussion event
The schematic diagram in the perimeter of piezoelectric film sensor side shown in Fig. 4 occurs；Fig. 6 shows that the generation of percussion event is being schemed
Schematic diagram in the perimeter of the piezoelectric film sensor other side shown in 4；It is shown in Fig. 4 that Fig. 7 shows that percussion event occurs
Piezoelectric film sensor interior zone in schematic diagram.
As shown in Figures 4 to 7, in the illustrated embodiment, which is suitable for being mounted on touch panel 10
On, for detecting the percussion event being applied on touch panel 10.
In one embodiment of the invention, a kind of piezoelectric membrane inspection of piezoelectric film sensor including diagram is disclosed
Device is surveyed, for detecting the position of percussion event generation.
As shown in Figures 4 to 7, in the illustrated embodiment, the piezoelectric film sensor include multiple piezoelectric membrane F1,
F2, F3, F4 simultaneously limit an interior zone.Aforementioned piezoelectric membrane detection device further includes position judgment device (not shown), should
The detection signal that position judgment device is suitable for being exported according to multiple piezoelectric membrane F1, F2, F3, F4 judges the generation position of percussion event
It sets whether in the interior zone of piezoelectric film sensor.
As shown in Figures 4 to 7, in the illustrated embodiment, which includes that the piezoelectricity of four rectangles is thin
Film F1, F2, F3, F4.Piezoelectric membrane F1, F2, F3, F4 of four rectangles surround a square-shaped frame.Piezoelectric film sensor
Interior zone is the square inner region limited by piezoelectric membrane F1, F2, F3, F4 of four rectangles.
Although not shown, in one embodiment of the present of invention, aforementioned piezoelectric membrane detection device further includes signal processing device
It sets, the signal processing apparatus is for handling multiple piezoelectric membrane F1, F2, F3, F4 detection signal exported.Position judgement
Whether device is suitable for detecting signal according to treated judges the generation position of percussion event in the inside of piezoelectric film sensor
In region.
As shown in fig. 7, when in the interior zone that piezoelectric film sensor shown in Fig. 4 occurs for percussion event, first
Piezoelectric membrane F1 detects that the time of percussion event is T1, and the second piezoelectric membrane F2 detects that the time of percussion event is T2, the
Three piezoelectric membrane F3 detect that the time of percussion event is T3, and the 4th piezoelectric membrane F4 detects that the time of percussion event is T4.
So, two piezoelectric membranes detect that the time difference of percussion event can be expressed as T2-T1, T3-T1, T4-T1, T3-T2, T4-
T2,T4-T3.According to Fig. 4 and Fig. 7, these time differences T2-T1, T3-T1, T4-T1, T3-T2, T4-T2, T4-T3 can be extrapolated
In any one time absolute value of the difference be all not more than a first threshold Z1, first threshold Z1 can be according to following formula
(3) it calculates:
Z1=L2/V (3),
Wherein,
L2 is opposite two piezoelectric membranes F1, F3；The distance between inner side edge of F2, F4；
V is spread speed of the mechanical wave that generates on touch panel 10 of percussion event in touch panel 10.
As shown in figs. 4 and 7, in the illustrated embodiment, exhausted when any one time difference in the calculated time difference
When being all not more than first threshold Z1 to value, position judgment device is it may determine that the generation position of the event of percussion is passed in piezoelectric membrane
In the interior zone of sensor, without in the perimeter of piezoelectric film sensor.
In the embodiment shown in fig. 7, the absolute value of time difference T3-T1 | T3-T1 | it is maximum, as long as | T3-T1 | it is not more than
First threshold Z1, position judgment device is it may determine that position occurs for the event of percussion in the interior zone of piezoelectric film sensor
In, without in the perimeter of piezoelectric film sensor.
As shown in Figure 5 and Figure 6, when in the perimeter that piezoelectric film sensor shown in Fig. 4 occurs for percussion event,
First piezoelectric membrane F1 detects that the time of percussion event is T1, and the second piezoelectric membrane F2 detects that the time of percussion event is
T2, third piezoelectric membrane F3 detect that the time of percussion event is T3, and the 4th piezoelectric membrane F4 detects the time of percussion event
For T4.So, two piezoelectric membranes detect that the time difference of percussion event can be expressed as T2-T1, T3-T1, T4-T1, T3-
T2,T4-T2,T4-T3.According to Fig. 4, Fig. 5 and Fig. 6, can extrapolate these time differences T2-T1, T3-T1, T4-T1, T3-T2,
Some time absolute value of the difference in T4-T2, T4-T3 is naturally larger than the second threshold Z2 bigger than first threshold Z1, this second
Threshold value Z2 should meet following relational expression (4):
Z1 < Z2 < (L1+L2)/2V (4),
Wherein,
L1 is opposite two piezoelectric membranes F1, F3；The distance between outer side edges of F2, F4.
As shown in Figure 4, Figure 5 and Figure 6, in the illustrated embodiment, when some time difference in the calculated time difference
Absolute value be greater than the second threshold Z2 bigger than first threshold Z1 when, position judgment device it may determine that tap event generation
Position is not in the interior zone of piezoelectric film sensor, and in the perimeter of piezoelectric film sensor.
In the embodiment shown in fig. 5, the absolute value of time difference T3-T1 | T3-T1 | it is maximum, as long as | T3-T1 | it is greater than the
Two threshold value Z2, position judgment device it may determine that tap event generation position not in the interior zone of piezoelectric film sensor
In, and in the perimeter of piezoelectric film sensor.
In the embodiment shown in fig. 6, the absolute value of time difference T4-T2 | T4-T2 | it is maximum, as long as | T4-T2 | it is greater than the
Two threshold value Z2, position judgment device it may determine that tap event generation position not in the interior zone of piezoelectric film sensor
In, and in the perimeter of piezoelectric film sensor.
In one embodiment of the invention, which can be used for exporting multiple piezoelectric membrane C1, C2
Detection signal amplify and Shape correction.
In one embodiment of the invention, aforementioned location judgment means can be microprocessor or computer, energy
Enough generation positions that percussion event is identified by internal algorithm.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this field
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of structure described in various embodiments
It can be freely combined in the case where prominent.
Although in conjunction with attached drawing, the present invention is described, and embodiment disclosed in attached drawing is intended to preferred to the present invention
Embodiment illustrates, and should not be understood as to a kind of limitation of the invention.
Although some embodiments of this present general inventive concept have been shown and have illustrated, those of ordinary skill in the art will be managed
Solution can make a change these embodiments in the case where the principle and spirit without departing substantially from this present general inventive concept, of the invention
Range is limited with claim and their equivalent.
It should be noted that word " comprising " is not excluded for other element or steps, word "a" or "an" is not excluded for multiple.Separately
Outside, the range that any element label of claim should not be construed as limiting the invention.
Claims (14)
1. a kind of piezoelectric membrane detection device, comprising:
Piezoelectric film sensor is applied to the touch panel (10) for detecting suitable for being mounted on touch panel (10)
Percussion event,
It is characterized by:
The piezoelectric film sensor includes multiple piezoelectric membranes (C1, C2) and limits an interior zone；
The piezoelectric membrane detection device further includes position judgment device, and the position judgment device is suitable for according to the multiple pressure
Whether the detection signal of conductive film (C1, C2) output judges the generation position of the percussion event in the piezoelectric film sensor
Interior zone in.
2. piezoelectric membrane detection device according to claim 1, it is characterised in that:
The piezoelectric membrane detection device further includes signal processing apparatus, for exporting to the multiple piezoelectric membrane (C1, C2)
Detection signal handled；
The position judgment device be suitable for according to treated detection signal judge the percussion event generation position whether
In the interior zone of the piezoelectric film sensor.
3. piezoelectric membrane detection device according to claim 1 or 2, it is characterised in that:
The position judgment device is suitable for being calculated according to the detection signal described in any two piezoelectric membranes (C1, C2) detect
The time difference of percussion event；
Whether the position judgment device is suitable for judging the generation position of the percussion event in institute according to the calculated time difference
It states in the interior zone of piezoelectric film sensor.
4. piezoelectric membrane detection device according to claim 3, it is characterised in that:
When any one time absolute value of the difference in the calculated time difference is all not more than first threshold Z1, the position judgement
Device judges the generation position of the percussion event in the interior zone of the piezoelectric film sensor, without in the piezoelectricity
In the perimeter of thin film sensor.
5. piezoelectric membrane detection device according to claim 4, it is characterised in that:
When some time absolute value of the difference in the calculated time difference is greater than the second threshold bigger than the first threshold Z1
When Z2, the position judgment device judges the generation position of the percussion event not in the inner area of the piezoelectric film sensor
In domain, and in the perimeter of the piezoelectric film sensor.
6. piezoelectric membrane detection device according to claim 5, which is characterized in that the piezoelectric film sensor includes:
The first piezoelectric membrane (C1) of annular, the interior zone is the circular interior limited by first piezoelectric membrane (C1)
Region；With
Circular second piezoelectric membrane (C2) is centrally arranged in the interior zone of first piezoelectric membrane (C1).
7. piezoelectric membrane detection device according to claim 6, which is characterized in that calculate institute according to following formula (1)
State first threshold Z1:
Z1=R12/V (1),
Wherein,
R12 is the radius of the inner circle of the first piezoelectric membrane (C1) of the annular,
V is propagation of the mechanical wave that generates on the touch panel (10) of the percussion event in the touch panel (10)
Speed.
8. piezoelectric membrane detection device according to claim 7, which is characterized in that the second threshold Z2 meets following
Relational expression:
Z1 < Z2 < (R11-R2)/V (2),
Wherein,
R11 is the radius of the outer circle of the first piezoelectric membrane (C1) of the annular,
R2 is the radius of circular second piezoelectric membrane (C2).
9. piezoelectric membrane detection device according to claim 5, which is characterized in that the piezoelectric film sensor includes:
The piezoelectric membrane (F1, F2, F3, F4) of the piezoelectric membrane (F1, F2, F3, F4) of four rectangles, four rectangles surrounds one
A square-shaped frame, the interior zone are the square inner limited by the piezoelectric membrane (F1, F2, F3, F4) of four rectangles
Region.
10. piezoelectric membrane detection device according to claim 9, which is characterized in that be calculated according to the following equation described
First threshold Z1:
Z1=L2/V (3),
Wherein,
L2 is opposite two piezoelectric membranes (F1, F3；F2, F4) the distance between inner side edge；
V is propagation of the mechanical wave that generates on the touch panel (10) of the percussion event in the touch panel (10)
Speed.
11. piezoelectric membrane detection device according to claim 10, which is characterized in that the second threshold Z2 meets following
Relational expression (4):
Z1 < Z2 < (L1+L2)/2V (4),
Wherein,
L1 is opposite two piezoelectric membranes (F1, F3；F2, F4) the distance between outer side edges.
12. a kind of piezoelectric film sensor is applied to the touch panel for detecting suitable for being mounted on touch panel (10)
(10) the percussion event on,
It is characterized by:
The piezoelectric film sensor includes multiple piezoelectric membranes (C1, C2) and limits an interior zone.
13. piezoelectric film sensor according to claim 12, which is characterized in that the piezoelectric film sensor includes:
The first piezoelectric membrane (C1) of annular, the interior zone is the circular interior limited by first piezoelectric membrane (C1)
Region；With
Circular second piezoelectric membrane (C2) is centrally arranged in the interior zone of first piezoelectric membrane (C1).
14. piezoelectric film sensor according to claim 12, which is characterized in that the piezoelectric film sensor includes:
The piezoelectric membrane (F1, F2, F3, F4) of the piezoelectric membrane (F1, F2, F3, F4) of four rectangles, four rectangles surrounds one
A square-shaped frame, the interior zone are the square inner limited by the piezoelectric membrane (F1, F2, F3, F4) of four rectangles
Region.
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| CN201810271729.0A CN110319955B (en) | 2018-03-29 | 2018-03-29 | Piezoelectric thin film detection device and piezoelectric thin film sensor |
| PCT/EP2019/057809 WO2019185767A1 (en) | 2018-03-29 | 2019-03-27 | Piezoelectric film detector and piezoelectric film sensor |
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| CN201810271729.0A CN110319955B (en) | 2018-03-29 | 2018-03-29 | Piezoelectric thin film detection device and piezoelectric thin film sensor |
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| CN113311488A (en) * | 2020-02-26 | 2021-08-27 | 泰科电子(上海)有限公司 | Device for detecting and device for handling objects |
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| WO2019185767A1 (en) | 2019-10-03 |
| CN110319955B (en) | 2021-06-18 |
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