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
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- thin film
- film sensor
- piezoelectric thin
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 239000012528 membrane Substances 0.000 title abstract 6
- 239000010408 film Substances 0.000 claims description 143
- 239000010409 thin film Substances 0.000 claims description 66
- 238000010079 rubber tapping Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims 2
- 238000009527 percussion Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
- Electrophonic Musical Instruments (AREA)
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 piezoelectric thin film sensor and a piezoelectric thin film detection apparatus including the same.
Background
In the prior art, piezoelectric films can be used to sense whether a tap is made by hand on a solid surface (e.g., a touch panel). When a hand strikes a solid plane, mechanical waves are generated, after the mechanical waves are transmitted on the solid surface, the piezoelectric film attached to the solid surface generates charges due to pressure, and whether a striking event occurs to the hand can be sensed by measuring the charges of the piezoelectric film. But only whether a knocking event occurs or not can be detected through the piezoelectric film, and the specific position of the knocking event cannot be detected.
Disclosure of Invention
An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.
According to an aspect of the present invention, there is provided a piezoelectric thin film sensing device including: a piezoelectric film sensor adapted to be attached to a touch panel for detecting a tap event applied to the touch panel, the piezoelectric film sensor including a plurality of piezoelectric films and defining an interior region; the piezoelectric film detection device further comprises a position judgment device, wherein the position judgment device is suitable for judging whether the occurrence position of the knocking event is in the inner area of the piezoelectric film sensor or not according to the detection signals output by the piezoelectric films.
According to an exemplary embodiment of the present invention, the piezoelectric thin film detection apparatus further includes a signal processing device for processing detection signals output by the plurality of piezoelectric thin films; the position judgment device is suitable for judging whether the occurrence position of the knocking event is in the inner area of the piezoelectric film sensor or not according to the processed detection signal.
According to another exemplary embodiment of the present invention, the position determination device is adapted to calculate a time difference between any two piezoelectric films detecting the knocking event according to the detection signal; the position determination device is adapted to determine whether the occurrence position of the knocking event is in the inner region of the piezoelectric thin film sensor according to the calculated time difference.
According to another exemplary embodiment of the present invention, when the absolute value of any one of the calculated time differences is not greater than the first threshold value Z1, the position determination means determines that the occurrence position of the knocking event is in the inner area of the piezoelectric thin-film sensor but not in the outer area of the piezoelectric thin-film sensor.
According to another exemplary embodiment of the present invention, when an absolute value of one of the calculated time differences is greater than a second threshold value Z2 that is greater than the first threshold value Z1, the position determination device determines that the occurrence position of the tap event is not in the inner area of the piezoelectric thin film sensor but in the outer area of the piezoelectric thin film sensor.
According to another exemplary embodiment of the present invention, the piezoelectric thin film sensor includes: an annular first piezoelectric film, the inner region being a circular inner region defined by the first piezoelectric film; and a circular second piezoelectric film centrally disposed in an interior region of the first piezoelectric film.
According to another exemplary embodiment of the present invention, the first threshold value Z1 is calculated according to the following formula (1):
Z1＝R12/V (1)，
wherein,
r12 is the radius of the inner circle of the annular first piezoelectric film,
v is the propagation speed of the mechanical wave generated on the touch panel by the tapping event in the touch panel.
According to another exemplary embodiment of the present invention, the second threshold value Z2 satisfies the following relation:
Z1<Z2<(R11-R2)/V (2)，
wherein,
r11 is the radius of the outer circle of the annular first piezoelectric thin film,
r2 is the radius of the circular second piezoelectric film.
According to another exemplary embodiment of the present invention, the piezoelectric thin film sensor includes: the piezoelectric film structure comprises four rectangular piezoelectric films, wherein the four rectangular piezoelectric films surround a square frame, and the inner area is a square inner area defined by the four rectangular piezoelectric films.
According to another exemplary embodiment of the present invention, the first threshold value Z1 is calculated according to the following formula:
Z1＝L2/V (3)，
wherein,
l2 is the distance between the inner side edges of the two opposing piezoelectric films;
v is the propagation speed of the mechanical wave generated on the touch panel by the tapping event in the touch panel.
According to another exemplary embodiment of the present invention, the second threshold value Z2 satisfies the following relation (4):
Z1<Z2<(L1+L2)/2V (4)，
wherein,
l1 is the distance between the outer sides of two opposing piezoelectric films.
In accordance with another aspect of the present invention, a piezoelectric film sensor is provided, adapted to be attached to a touch panel for detecting a tap event applied to the touch panel, the piezoelectric film sensor including a plurality of piezoelectric films and defining an interior region.
According to another exemplary embodiment of the present invention, the piezoelectric thin film sensor includes: an annular first piezoelectric film, the inner region being a circular inner region defined by the first piezoelectric film; and a circular second piezoelectric film centrally disposed in an interior region of the first piezoelectric film.
According to another exemplary embodiment of the present invention, the piezoelectric thin film sensor includes: the piezoelectric film structure comprises four rectangular piezoelectric films, wherein the four rectangular piezoelectric films surround a square frame, and the inner area is a square inner area defined by the four rectangular piezoelectric films.
In the foregoing various exemplary embodiments of the present invention, the piezoelectric film sensor includes a plurality of piezoelectric films and defines an internal area, and whether the occurrence location of the knocking event is in the internal area of the piezoelectric film sensor can be identified according to the detection signals output from the plurality of piezoelectric films, so that the occurrence location of the knocking event can be identified.
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Drawings
FIG. 1 shows a schematic view of a piezoelectric thin film sensor according to a first embodiment of the invention;
FIG. 2 shows a schematic diagram of a tapping event occurring in the outer region of the piezoelectric film sensor shown in FIG. 1;
FIG. 3 shows a schematic diagram of a tapping event occurring in the interior region of the piezoelectric film sensor shown in FIG. 1;
FIG. 4 shows a schematic view of a piezoelectric thin film sensor according to a second embodiment of the invention;
FIG. 5 shows a schematic diagram of a tapping event occurring in the outer region of one side of the piezoelectric film sensor shown in FIG. 4;
FIG. 6 shows a schematic diagram of a tapping event occurring in the outer region on the other side of the piezoelectric film sensor shown in FIG. 4;
FIG. 7 shows a schematic diagram of a tapping event occurring in the interior region of the piezoelectric film sensor shown in FIG. 4.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to one general concept of the present invention, there is provided a piezoelectric thin film sensing device, including: a piezoelectric film sensor adapted to be attached to a touch panel for detecting a tap event applied to the touch panel, the piezoelectric film sensor including a plurality of piezoelectric films and defining an interior region; the piezoelectric film detection device further comprises a position judgment device, wherein the position judgment device is suitable for judging whether the occurrence position of the knocking event is in the inner area of the piezoelectric film sensor or not according to the detection signals output by the piezoelectric films.
According to another general concept of the present invention, there is provided a piezoelectric thin film sensor adapted to be attached to a touch panel for detecting a tap event applied to the touch panel, the piezoelectric thin film sensor including a plurality of piezoelectric thin films and defining an inner area.
First embodiment
FIG. 1 shows a schematic view of a piezoelectric thin film sensor according to a first embodiment of the invention; FIG. 2 shows a schematic diagram of a tapping event occurring in the outer region of the piezoelectric film sensor shown in FIG. 1; FIG. 3 shows a schematic diagram of a tapping event occurring in the interior region of the piezoelectric film sensor shown in FIG. 1.
As shown in fig. 1-3, in the illustrated embodiment, the piezoelectric film sensor is adapted to be attached to a touch panel 10 for detecting a tap event applied to the touch panel 10.
In one embodiment of the present invention, a piezoelectric film sensing device is disclosed that includes the illustrated piezoelectric film sensor for sensing the location of a percussive event.
As shown in fig. 1-3, in the illustrated embodiment, the piezoelectric film sensor includes a plurality of piezoelectric films C1, C2 and defines an interior region. The aforementioned piezoelectric thin film detection device further includes position determination means (not shown) adapted to determine whether or not the position of occurrence of the knocking event is in the inner region of the piezoelectric thin film sensor based on the detection signals output from the plurality of piezoelectric thin films C1, C2.
As shown in fig. 1 to 3, in the illustrated embodiment, the piezoelectric thin film sensor includes: a ring-shaped first piezoelectric film C1 and a circular second piezoelectric film C2. The inner area of the piezoelectric film sensor is a circular inner area defined by the first piezoelectric film C1. The circular second piezoelectric film C2 is centrally disposed in the inner region of the first piezoelectric film C1.
Although not shown, in an embodiment of the present invention, the piezoelectric film sensing device further includes a signal processing device for processing the sensing signals output from the plurality of piezoelectric films C1 and C2. The position judgment means is adapted to judge whether the occurrence position of the knocking event is in the inner region of the piezoelectric thin film sensor based on the processed detection signal.
As shown in fig. 3, when a tap event occurs in the inner region of the piezoelectric film sensor shown in fig. 1, the time at which the first piezoelectric film C1 detects the tap event is T1, and the time at which the second piezoelectric film C2 detects the tap event is T2. Then, the time difference between the detection of the tap event by the first and second piezoelectric films C1, C2 is T2 to T1. From fig. 1 and 3, it can be deduced that the absolute value | T2-T1| of T2-T1 is not greater than a first threshold value Z1, which first threshold value Z1 can be calculated according to the following equation (1):
Z1＝R12/V (1)，
wherein,
r12 is the radius of the inner circle of the annular first piezoelectric thin film C1,
v is the propagation speed of the mechanical wave in the touch panel 10 generated on the touch panel 10 by the tap event.
As shown in fig. 1 and 3, in the illustrated embodiment, when the absolute value | T2-T1| of the calculated time difference is not greater than the first threshold value Z1, the position determination device may determine that the occurrence position of the knocking event is in the inner area of the piezoelectric thin film sensor but not in the outer area of the piezoelectric thin film sensor.
As shown in fig. 2, when a tap event occurs in the outer region of the piezoelectric film sensor shown in fig. 1, the time at which the first piezoelectric film C1 detects the tap event is T1, and the time at which the second piezoelectric film C2 detects the tap event is T2. Then, the time difference between the detection of the tap event by the first and second piezoelectric films C1, C2 is T2 to T1. From fig. 1 and 2, it can be deduced that the absolute value | T2-T1| of T2-T1 is greater than the second threshold value Z2, which is greater than the first threshold value Z1, and the second threshold value Z2 should satisfy the following relation (2):
Z1<Z2<(R11-R2)/V (2)，
wherein,
r11 is the radius of the outer circle of the annular first piezoelectric thin film C1,
r2 is the radius of the circular second piezoelectric film C2.
As shown in fig. 1 and 2, in the illustrated embodiment, when the absolute value | T2-T1| of the calculated time difference is greater than the second threshold value Z2, which is greater than the first threshold value Z1, the position determination means may determine that the occurrence position of the knocking event is not in the inner area of the piezoelectric film sensor but in the outer area of the piezoelectric film sensor.
In one embodiment of the present invention, the signal processing device may be configured to amplify and shape the detection signals output from the plurality of piezoelectric thin films C1 and C2.
In one embodiment of the present invention, the position determining device may be a microprocessor or a computer, which can identify the occurrence position of the knocking event through an internal algorithm.
Second embodiment
FIG. 4 shows a schematic view of a piezoelectric thin film sensor according to a second embodiment of the invention; FIG. 5 shows a schematic diagram of a tapping event occurring in the outer region of one side of the piezoelectric film sensor shown in FIG. 4; FIG. 6 shows a schematic diagram of a tapping event occurring in the outer region on the other side of the piezoelectric film sensor shown in FIG. 4; FIG. 7 shows a schematic diagram of a tapping event occurring in the interior region of the piezoelectric film sensor shown in FIG. 4.
As shown in fig. 4-7, in the illustrated embodiment, the piezoelectric film sensor is adapted to be attached to the touch panel 10 for detecting a tap event applied to the touch panel 10.
In one embodiment of the present invention, a piezoelectric film sensing device is disclosed that includes the illustrated piezoelectric film sensor for sensing the location of a percussive event.
As shown in fig. 4 to 7, in the illustrated embodiment, the piezoelectric film sensor includes a plurality of piezoelectric films F1, F2, F3, F4 and defines an inner region. The aforementioned piezoelectric thin film sensing device further includes position determination means (not shown) adapted to determine whether the occurrence position of the knocking event is in the inner region of the piezoelectric thin film sensor based on the detection signals output from the plurality of piezoelectric thin films F1, F2, F3, F4.
As shown in fig. 4 to 7, in the illustrated embodiment, the piezoelectric film sensor includes four rectangular piezoelectric films F1, F2, F3, F4. Four rectangular piezoelectric films F1, F2, F3 and F4 enclose a square frame. The inner region of the piezoelectric film sensor is a square inner region defined by four rectangular piezoelectric films F1, F2, F3, F4.
Although not shown, in an embodiment of the present invention, the aforementioned piezoelectric thin film inspection apparatus further includes a signal processing device for processing the inspection signals output from the plurality of piezoelectric thin films F1, F2, F3, and F4. The position judgment means is adapted to judge whether the occurrence position of the knocking event is in the inner region of the piezoelectric thin film sensor based on the processed detection signal.
As shown in fig. 7, when a tap event occurs in the inner region of the piezoelectric film sensor shown in fig. 4, the time at which the first piezoelectric film F1 detects the tap event is T1, the time at which the second piezoelectric film F2 detects the tap event is T2, the time at which the third piezoelectric film F3 detects the tap event is T3, and the time at which the fourth piezoelectric film F4 detects the tap event is T4. Then, the time difference between the detection of the knocking event by the two piezoelectric films can be represented as T2-T1, T3-T1, T4-T1, T3-T2, T4-T2, T4-T3. According to fig. 4 and 7, it can be deduced that the absolute value of any one of the time differences T2-T1, T3-T1, T4-T1, T3-T2, T4-T2, T4-T3 is not greater than a first threshold Z1, which first threshold Z1 can be calculated according to the following formula (3):
Z1＝L2/V (3)，
wherein,
l2 is two piezoelectric films F1, F3 facing each other; distance between the inner edges of F2, F4;
v is the propagation speed of the mechanical wave in the touch panel 10 generated on the touch panel 10 by the tap event.
As shown in fig. 4 and 7, in the illustrated embodiment, when the absolute value of any one of the calculated time differences is not greater than the first threshold value Z1, the position determination means may determine that the occurrence position of the knocking event is in the inner area of the piezoelectric thin film sensor, but not in the outer area of the piezoelectric thin film sensor.
In the embodiment shown in fig. 7, the absolute value | T3-T1| of the time difference T3-T1 is the largest, and the position determination means can determine that the occurrence position of the knocking event is in the inner area of the piezoelectric film sensor but not in the outer area of the piezoelectric film sensor as long as | T3-T1| is not greater than the first threshold value Z1.
As shown in fig. 5 and 6, when a tap event occurs in the outer region of the piezoelectric film sensor shown in fig. 4, the time at which the first piezoelectric film F1 detects the tap event is T1, the time at which the second piezoelectric film F2 detects the tap event is T2, the time at which the third piezoelectric film F3 detects the tap event is T3, and the time at which the fourth piezoelectric film F4 detects the tap event is T4. Then, the time difference between the detection of the knocking event by the two piezoelectric films can be represented as T2-T1, T3-T1, T4-T1, T3-T2, T4-T2, T4-T3. From fig. 4, 5 and 6, it can be deduced that the absolute value of any one of the time differences T2-T1, T3-T1, T4-T1, T3-T2, T4-T2 and T4-T3 is necessarily greater than the second threshold Z2 greater than the first threshold Z1, and the second threshold Z2 should satisfy the following relation (4):
Z1<Z2<(L1+L2)/2V (4)，
wherein,
l1 is two piezoelectric films F1, F3 facing each other; distance between the outer sides of F2, F4.
As shown in fig. 4, 5, and 6, in the illustrated embodiment, when the absolute value of any one of the calculated time differences is greater than a second threshold value Z2 that is greater than the first threshold value Z1, the position determination device may determine that the occurrence position of the tap event is not in the inner area of the piezoelectric film sensor but in the outer area of the piezoelectric film sensor.
In the embodiment shown in fig. 5, the absolute value | T3-T1| of the time difference T3-T1 is the largest, and as long as | T3-T1| is greater than the second threshold value Z2, the position determination means can determine that the occurrence position of the knocking event is not in the inner area of the piezoelectric film sensor but in the outer area of the piezoelectric film sensor.
In the embodiment shown in fig. 6, the absolute value | T4-T2| of the time difference T4-T2 is the largest, and as long as | T4-T2| is greater than the second threshold value Z2, the position determination means can determine that the occurrence position of the knocking event is not in the inner area of the piezoelectric film sensor but in the outer area of the piezoelectric film sensor.
In one embodiment of the present invention, the signal processing device may be configured to amplify and shape the detection signals output from the plurality of piezoelectric thin films C1 and C2.
In one embodiment of the present invention, the position determining device may be a microprocessor or a computer, which can identify the occurrence position of the knocking event through an internal algorithm.
It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.
Claims (14)
1. A piezoelectric thin film sensing device comprising:
a piezoelectric thin film sensor adapted to be attached to a touch panel (10) for detecting a tap event applied to the touch panel (10),
the method is characterized in that:
the piezoelectric film sensor includes a plurality of piezoelectric films (C1, C2) and defines an interior region;
the piezoelectric film detection device further includes a position determination device adapted to determine whether the occurrence position of the knocking event is in the inner region of the piezoelectric film sensor based on the detection signals output from the plurality of piezoelectric films (C1, C2).
2. The piezoelectric thin film sensing device according to claim 1, wherein:
the piezoelectric film detection device further comprises a signal processing device for processing detection signals output by the plurality of piezoelectric films (C1, C2);
the position judgment device is suitable for judging whether the occurrence position of the knocking event is in the inner area of the piezoelectric film sensor or not according to the processed detection signal.
3. The piezoelectric thin film detection device according to claim 1 or 2, characterized in that:
the position judgment device is suitable for calculating the time difference of any two piezoelectric films (C1, C2) for detecting the knocking event according to the detection signals;
the position determination device is adapted to determine whether the occurrence position of the knocking event is in the inner region of the piezoelectric thin film sensor according to the calculated time difference.
4. The piezoelectric thin film detection apparatus according to claim 3, wherein:
when the absolute value of any one of the calculated time differences is not greater than the first threshold value Z1, the position determination means determines that the occurrence position of the knocking event is in the inner area of the piezoelectric thin-film sensor but not in the outer area of the piezoelectric thin-film sensor.
5. The piezoelectric thin film sensing device according to claim 4, wherein:
when the absolute value of any one of the calculated time differences is greater than a second threshold value Z2 that is greater than the first threshold value Z1, the position determination means determines that the occurrence position of the tap event is not in the inner region of the piezoelectric thin-film sensor but in the outer region of the piezoelectric thin-film sensor.
6. The piezoelectric thin film sensing device according to claim 5, wherein the piezoelectric thin film sensor includes:
an annular first piezoelectric film (C1), the inner region being a circular inner region defined by the first piezoelectric film (C1); and
a circular second piezoelectric film (C2) centrally disposed in an interior region of the first piezoelectric film (C1).
7. The piezoelectric thin film sensing device according to claim 6, wherein the first threshold value Z1 is calculated according to the following formula (1):
Z1＝R12/V (1)，
wherein,
r12 is the radius of the inner circle of the annular first piezoelectric film (C1),
v is the propagation speed of the mechanical wave generated on the touch panel (10) by the tapping event in the touch panel (10).
8. The piezoelectric thin film detection device according to claim 7, wherein the second threshold value Z2 satisfies the following relation:
Z1<Z2<(R11-R2)/V (2)，
wherein,
r11 is the radius of the outer circle of the annular first piezoelectric film (C1),
r2 is the radius of the circular second piezoelectric film (C2).
9. The piezoelectric thin film sensing device according to claim 5, wherein the piezoelectric thin film sensor includes:
the piezoelectric film structure comprises four rectangular piezoelectric films (F1, F2, F3 and F4), the four rectangular piezoelectric films (F1, F2, F3 and F4) surround a square frame, and the inner area is a square inner area defined by the four rectangular piezoelectric films (F1, F2, F3 and F4).
10. The piezoelectric thin film sensing device as claimed in claim 9, wherein the first threshold value Z1 is calculated according to the following formula:
Z1＝L2/V (3)，
wherein,
l2 is the distance between the inner sides of two opposite piezoelectric films (F1, F3; F2, F4);
v is the propagation speed of the mechanical wave generated on the touch panel (10) by the tapping event in the touch panel (10).
11. The piezoelectric thin film sensing device according to claim 10, wherein the second threshold value Z2 satisfies the following relation (4):
Z1<Z2<(L1+L2)/2V (4)，
wherein,
l1 is the distance between the outer sides of two opposing piezoelectric films (F1, F3; F2, F4).
12. A piezoelectric thin film sensor adapted to be attached to a touch panel (10) for detecting a tap event applied to the touch panel (10),
the method is characterized in that:
the piezoelectric film sensor includes a plurality of piezoelectric films (C1, C2) and defines an interior region.
13. The piezoelectric thin film sensor according to claim 12, comprising:
an annular first piezoelectric film (C1), the inner region being a circular inner region defined by the first piezoelectric film (C1); and
a circular second piezoelectric film (C2) centrally disposed in an interior region of the first piezoelectric film (C1).
14. The piezoelectric thin film sensor according to claim 12, comprising:
the piezoelectric film structure comprises four rectangular piezoelectric films (F1, F2, F3 and F4), the four rectangular piezoelectric films (F1, F2, F3 and F4) surround a square frame, and the inner area is a square inner area defined by the four rectangular piezoelectric films (F1, F2, F3 and F4).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271729.0A CN110319955B (en) | 2018-03-29 | 2018-03-29 | Piezoelectric thin film detection device and piezoelectric thin film sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110319955A true CN110319955A (en) | 2019-10-11 |
| CN110319955B CN110319955B (en) | 2021-06-18 |
Family
ID=65951595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271729.0A Active CN110319955B (en) | 2018-03-29 | 2018-03-29 | Piezoelectric thin film detection device and piezoelectric thin film sensor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110319955B (en) |
| WO (1) | WO2019185767A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103998B (en) * | 2018-10-26 | 2024-06-14 | 泰科电子(上海)有限公司 | Touch control detection device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256809A (en) * | 1998-01-16 | 2000-06-14 | 三菱电机株式会社 | Thin-film pietoelectric element |
| CN1480900A (en) * | 2003-03-31 | 2004-03-10 | 深圳市先导电子有限公司 | Hand input transmitting and receiving device |
| US20090294186A1 (en) * | 2005-08-09 | 2009-12-03 | Luca Fontanella | Touch position determining device and method, and electronic touch-sensitive device |
| CN101655771A (en) * | 2009-09-07 | 2010-02-24 | 上海合合信息科技发展有限公司 | Method and system for inputting multi-contact characters |
| CN101916153A (en) * | 2010-08-04 | 2010-12-15 | 中兴通讯股份有限公司 | Method, device and terminal for positioning touch point of touch screen |
| CN101965549A (en) * | 2008-03-12 | 2011-02-02 | 艾勒博科技股份有限公司 | Touch sensor device and pointing coordinate determination method thereof |
| CN101995996A (en) * | 2010-11-30 | 2011-03-30 | 汉王科技股份有限公司 | Touch screen and method for positioning mechanical waves thereof |
| US20130147577A1 (en) * | 2011-12-12 | 2013-06-13 | Taiyo Yuden Co., Ltd. | Filter and duplexer |
| CN104636013A (en) * | 2013-11-11 | 2015-05-20 | Nlt科技股份有限公司 | Piezoelectric sheet, touch panel, and input-output device |
| CN105892767A (en) * | 2014-12-24 | 2016-08-24 | 南京优触电子科技有限公司 | Ultrasonic wave based interactive facility realization method |
| TW201715215A (en) * | 2015-09-09 | 2017-05-01 | 東芝股份有限公司 | Pressure sensor, microphone, ultrasonic sensor, blood pressure sensor, and touch panel |
| CN106775051A (en) * | 2016-11-15 | 2017-05-31 | 深圳天珑无线科技有限公司 | A kind of pressure sensitivity contact panel and pressure sensitivity contactor control device |
| WO2018056193A1 (en) * | 2016-09-23 | 2018-03-29 | 株式会社村田製作所 | Piezoelectric device and display device |
| CN108169037A (en) * | 2017-12-15 | 2018-06-15 | 南京航空航天大学 | Continuous heterogeneous large area Impact monitoring network and shock zone localization method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004031711A1 (en) * | 2002-10-01 | 2004-04-15 | National Institute Of Advanced Industrial Science And Technology | Piezoelectric sensor and input device comprising same |
-
2018
- 2018-03-29 CN CN201810271729.0A patent/CN110319955B/en active Active
-
2019
- 2019-03-27 WO PCT/EP2019/057809 patent/WO2019185767A1/en active Application Filing
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256809A (en) * | 1998-01-16 | 2000-06-14 | 三菱电机株式会社 | Thin-film pietoelectric element |
| CN1480900A (en) * | 2003-03-31 | 2004-03-10 | 深圳市先导电子有限公司 | Hand input transmitting and receiving device |
| US20090294186A1 (en) * | 2005-08-09 | 2009-12-03 | Luca Fontanella | Touch position determining device and method, and electronic touch-sensitive device |
| CN101965549A (en) * | 2008-03-12 | 2011-02-02 | 艾勒博科技股份有限公司 | Touch sensor device and pointing coordinate determination method thereof |
| CN101655771A (en) * | 2009-09-07 | 2010-02-24 | 上海合合信息科技发展有限公司 | Method and system for inputting multi-contact characters |
| CN101916153A (en) * | 2010-08-04 | 2010-12-15 | 中兴通讯股份有限公司 | Method, device and terminal for positioning touch point of touch screen |
| CN101995996A (en) * | 2010-11-30 | 2011-03-30 | 汉王科技股份有限公司 | Touch screen and method for positioning mechanical waves thereof |
| US20130147577A1 (en) * | 2011-12-12 | 2013-06-13 | Taiyo Yuden Co., Ltd. | Filter and duplexer |
| CN104636013A (en) * | 2013-11-11 | 2015-05-20 | Nlt科技股份有限公司 | Piezoelectric sheet, touch panel, and input-output device |
| CN105892767A (en) * | 2014-12-24 | 2016-08-24 | 南京优触电子科技有限公司 | Ultrasonic wave based interactive facility realization method |
| TW201715215A (en) * | 2015-09-09 | 2017-05-01 | 東芝股份有限公司 | Pressure sensor, microphone, ultrasonic sensor, blood pressure sensor, and touch panel |
| WO2018056193A1 (en) * | 2016-09-23 | 2018-03-29 | 株式会社村田製作所 | Piezoelectric device and display device |
| CN106775051A (en) * | 2016-11-15 | 2017-05-31 | 深圳天珑无线科技有限公司 | A kind of pressure sensitivity contact panel and pressure sensitivity contactor control device |
| CN108169037A (en) * | 2017-12-15 | 2018-06-15 | 南京航空航天大学 | Continuous heterogeneous large area Impact monitoring network and shock zone localization method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110319955B (en) | 2021-06-18 |
| WO2019185767A1 (en) | 2019-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019018861A3 (en) | Defective ultrasonic transducer detection in an ultrasonic sensor | |
| JP6806816B2 (en) | Distance difference-Piping leak detectors and methods using frequency analysis | |
| US20080255778A1 (en) | Detecting damage in metal structures with structural health monitoring systems | |
| JP6652054B2 (en) | Position determining device, leak detection system, position determining method, and computer-readable recording medium | |
| CN110319955B (en) | Piezoelectric thin film detection device and piezoelectric thin film sensor | |
| WO2015141129A1 (en) | Speed-of-sound calculation device, speed-of-sound calculation method, and speed-of-sound calculation program | |
| KR101956160B1 (en) | Leak detecting apparatus | |
| CA3155768A1 (en) | Systems and methods for analyzing casing bonding in a well using differential sensing | |
| GB2530565A (en) | Acoustic thermometry | |
| CN103775830B (en) | A kind of high-temperature steam Leak Detection and Location System and method | |
| WO2015082702A3 (en) | Downhole sonar | |
| JP6519477B2 (en) | Leakage position calculation device, leakage position calculation method, computer readable recording medium, vibration calculation device, and arithmetic device | |
| US20160258834A1 (en) | Synchronization-free pipeline leak detection system and method | |
| WO2017086150A1 (en) | Device for measuring deposit thickness using ultrasonic waves, and method therefor | |
| JP6802113B2 (en) | Ultrasonography method | |
| WO2016017168A1 (en) | Diagnostic device, diagnostic system, diagnostic method, and computer-readable recording medium | |
| KR101965690B1 (en) | A monitoring system of water supply pipeline | |
| JP7542503B2 (en) | Inspection system and inspection method | |
| JPS5942827B2 (en) | AE diagnostic device | |
| JP2020041814A (en) | Detection system, detection method, and server device | |
| KR101379934B1 (en) | Apparatus and method for measuring the thickness of the scale in a pipe | |
| KR20220026915A (en) | Apparatus for sensing leakage using image and sound and method thereof | |
| JP6349861B2 (en) | Leak detection device, leak detection system, leak detection method and program | |
| JP6218061B2 (en) | Object detection device | |
| JP2019124613A (en) | Water leakage detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |