CN214011959U

CN214011959U - Sensor assembly, touch device and electronic equipment

Info

Publication number: CN214011959U
Application number: CN202022894795.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Taifang Technology Co ltd
Current assignee: Beijing Taifang Technology Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-08-20
Anticipated expiration: 2030-12-03

Abstract

Disclosed herein are a sensor assembly, a touch device and an electronic apparatus. The sensor assembly includes a piezoelectric sensor, a first flexible conductor and a second flexible conductor, the first and second flexible conductors being electrically connected to two electrodes of the piezoelectric sensor, respectively, and the first and second flexible conductors being configured to be electrically connected to a circuit board. The touch device includes: a touch pad; a sensor assembly; the circuit board is electrically connected with the two electrodes of the piezoelectric sensor through the first flexible conductor and the second flexible conductor respectively; and the control chip is electrically connected with the circuit board and can receive the detection signal of the piezoelectric sensor and control the piezoelectric sensor to vibrate through the circuit board. The piezoelectric sensor can perform touch detection and vibration feedback according to piezoelectric and inverse piezoelectric effects, so that the sensor component is simple in structure, light and thin.

Description

Sensor assembly, touch device and electronic equipment

Technical Field

The present disclosure relates to, but not limited to, the field of touch technologies, and in particular, but not limited to, a sensor assembly, a touch device, and an electronic device.

Background

The force touch module is an electronic product structure capable of providing a switch signal, is widely applied to industries such as computers (including notebook computers, desktop computers, independent touch pads and tablet computers), automobiles (such as steering wheels, center consoles, intelligent large screens and the like), household appliances (such as various switch panels of electric cookers, washing machines, air conditioners and the like) and the like at present, and is directly contacted with a user as a core interaction component.

Traditional dynamics touch module is because function singleness, experience are not good, is replaced by the novel dynamics touch module who takes the dynamics interaction and vibration feedback gradually. As a novel intelligent dynamics switch module, in the aspect of human-computer interaction experience, different with traditional dynamics touch module be, this novel dynamics touch module during operation does not produce the physical displacement with the part of user contact, consequently when the user applys the dynamics at preset position and presses down, the module need provide corresponding feedback signal so that the user can make clear and definite perception press down effectively.

Generally speaking, one typical way to provide a feedback signal is to use various types of micro-motors with actuators (including but not limited to, rotor motors, linear motors, etc. actuators). The size, mass and the like of the actuating mechanism are difficult to be ultra-light and ultra-thin, so that the actuating mechanism is difficult to be practically applied to products with clear light and thin requirements.

SUMMERY OF THE UTILITY MODEL

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the application provides a sensor component, a touch device and electronic equipment, and piezoelectric sensor can utilize piezoelectric effect and inverse piezoelectric effect to carry out touch operation detection and vibration feedback, so that the touch device is simple in structure, small in size and weight and low in cost, and can be applied to electronic equipment with requirements on lightness and thinness.

A sensor assembly, comprising: the piezoelectric sensor comprises two electrodes, the first flexible conductor and the second flexible conductor are respectively and electrically connected with the two electrodes of the piezoelectric sensor, and the first flexible conductor and the second flexible conductor are arranged to be electrically connected with a circuit board.

A touch device, comprising:

a touch pad;

the sensor assembly described above;

the circuit board is electrically connected with two electrodes of a piezoelectric sensor of the sensor assembly through a first flexible conductor and a second flexible conductor of the sensor assembly respectively; and

the control chip is electrically connected with the circuit board, and the control chip is set to receive the detection signal of the piezoelectric sensor through the circuit board and control the piezoelectric sensor to vibrate.

An electronic device comprises the touch device and a shell, wherein a touch pad of the touch device is fixed to the shell, or the touch pad of the touch device and the shell are of an integrated structure.

In this application embodiment, sensor module utilizes piezoelectric sensor's piezoelectricity effect to carry out touch-control and detects to utilize piezoelectric sensor's inverse piezoelectric effect to carry out vibration feedback, compare in current realization vibration feedback through micro motor, the sensor module that the realization touch-control of this application embodiment detected and vibration feedback's simple structure, the quality is light, and is small, can adapt to electronic equipment's frivolousization demand.

Other features and advantages of the present application will be set forth in the description that follows.

Drawings

Fig. 1 is a schematic structural diagram of a touch device according to an embodiment of the present application;

FIG. 2 is a schematic view of a partial structure of the touch device shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a sensor element of the touch device shown in FIG. 1;

FIG. 4 is a schematic diagram of the construction of a second flexible electrical conductor of the sensor assembly shown in FIG. 3;

FIG. 5 is a schematic view of another structure of a sensor element of the touch device shown in FIG. 1;

FIG. 6 is a schematic diagram of the construction of a second flexible electrical conductor of the sensor assembly shown in FIG. 5;

fig. 7 is a schematic partial structure diagram of a touch device according to another embodiment of the present application;

fig. 8 is a schematic layout diagram of sensor elements of a touch device according to an embodiment of the present disclosure;

fig. 9 is a schematic view illustrating an assembly structure of a housing and a touch device of an electronic apparatus according to an embodiment of the present disclosure;

fig. 10 is a schematic view illustrating an assembly structure of a housing and a touch device of an electronic apparatus according to another embodiment of the present disclosure;

fig. 11 is a perspective view illustrating an assembly structure of the housing and the touch device of the electronic device shown in fig. 10.

Reference numerals:

1: a sensor assembly; 11: a piezoelectric sensor; 12: a first flexible electrical conductor; 121: a first through hole; 13: a second flexible electrical conductor; 131: second through hole, 14: a reinforcing sheet; 101A-101E, 102A-102E, 103A-103E: a sensor assembly; 2: a touch pad; 21: a touch area; 31: a first circuit board; 32: a second circuit board; 4: a control chip; 5: a housing.

Detailed Description

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a sensor assembly 1, where the sensor assembly 1 may be applied in a touch device.

As shown in fig. 2, 3 and 5, the sensor assembly 1 includes: the piezoelectric sensor comprises a piezoelectric sensor 11, a first flexible conductor 12 and a second flexible conductor 13, wherein the piezoelectric sensor 11 comprises two electrodes (positive and negative electrodes), the first flexible conductor 12 and the second flexible conductor 13 are respectively electrically connected with the two electrodes of the piezoelectric sensor 11, and the first flexible conductor 12 and the second flexible conductor 13 are electrically connected with a circuit board.

In the sensor unit 1, two electrodes of the piezoelectric sensor 11 are electrically connected to the first flexible conductor 12 and the second flexible conductor 13, respectively. The sensor assembly 1 can be applied to a touch device (the specific structure is described below), and the first flexible conductive body 12 and the second flexible conductive body 13 can be electrically connected with circuit boards (a first circuit board 31 and a second circuit board 32 described below) of the touch device. When pressing touch device's touch-control panel 2, also receive the pressing force on the piezoelectric sensor 11, according to piezoelectric effect, piezoelectric sensor 11 can generate detected signal (signal of telecommunication) to detected signal can transmit control chip 4 on the circuit board, control chip 4 can send control command according to detected signal, control piezoelectric sensor 11 vibrates according to the inverse piezoelectric effect, in order to provide user's feedback, make the user learn that the operation of pressing on touch-control panel 2 has been sensed, user's use experience has been improved.

This sensor module 1 utilizes piezoelectric sensor 11's piezoelectric effect to carry out touch-control detection to utilize piezoelectric sensor 11's inverse piezoelectric effect to carry out vibration feedback, compare in current through the micro-motor realization vibration feedback, the sensor module 1's of realization touch-control detection and vibration feedback of the embodiment of this application simple structure, the quality is light, and is small, can adapt to electronic equipment's frivolous demand.

In some exemplary embodiments, as shown in fig. 2, 3 and 5, two electrodes of the piezoelectric sensor 11 are respectively located at two sides of the piezoelectric sensor 11, and the first flexible conductive body 12 and the second flexible conductive body 13 are respectively disposed at two sides of the piezoelectric sensor 11.

In the sensor module 1, two electrodes of the piezoelectric sensor 11 may be respectively located on the upper and lower sides of the piezoelectric sensor 11, the first flexible conductor 12 and the second flexible conductor 13 may be respectively disposed on the upper and lower sides of the piezoelectric sensor 11, the first flexible conductor 12 located on the upper side is electrically connected to the electrode on the upper side of the piezoelectric sensor 11, and the second flexible conductor 13 located on the lower side is electrically connected to the electrode on the lower side of the piezoelectric sensor 11.

In other exemplary embodiments, the two electrodes of the piezoelectric sensor 11 are located on the same side of the piezoelectric sensor 11, and the first flexible electrical conductor 12 and the second flexible electrical conductor 13 are disposed on the side of the electrodes of the piezoelectric sensor 11.

In the sensor assembly 1, two electrodes of the piezoelectric sensor 11 may be located on an upper side (or a lower side) of the piezoelectric sensor 11, the first flexible conductive body 12 and the second flexible conductive body 13 may be both disposed on the upper side (or the lower side) of the piezoelectric sensor 11, and the first flexible conductive body 12 and the second flexible conductive body 13 are electrically connected to the two electrodes of the piezoelectric sensor 11, respectively.

In some exemplary embodiments, the first flexible electrical conductor 12 and the second flexible electrical conductor 13 may both be conductive foam. Of course, the first flexible electrical conductor 12 and the second flexible electrical conductor 13 may also be other components besides the conductive foam, such as fpc (flexible Printed circuit), etc.

In some exemplary embodiments, as shown in fig. 2, 3 and 5, the sensor assembly 1 further comprises a stiffener 14, the stiffener 14 being disposed between the piezoelectric sensor 11 and the second flexible electrical conductor 13, or, as shown in fig. 7, the stiffener 14 being disposed between the piezoelectric sensor 11 and the first flexible electrical conductor 12.

As shown in fig. 2, the first flexible conductor 12 is disposed on a side close to the touch pad 2 of the touch device, the second flexible conductor 13 is disposed on a side far from the touch pad 2, the reinforcement sheet 14 may be disposed between the second flexible conductor 13 and the piezoelectric sensor 11, and the first flexible conductor 12, the piezoelectric sensor 11, the reinforcement sheet 14 and the second flexible conductor 13 are sequentially disposed from top to bottom; alternatively, as shown in fig. 7, the reinforcing sheet 14 may be provided between the first flexible conductor 12 and the piezoelectric sensor 11, and the first flexible conductor 12, the reinforcing sheet 14, the piezoelectric sensor 11, and the second flexible conductor 13 may be provided in this order from top to bottom.

The reinforcing sheet 14 can protect the piezoelectric sensor 11 and prevent the piezoelectric sensor 11 from being damaged by a force or a collision.

In some exemplary embodiments, the reinforcing sheet 14 may be a metal sheet or made of other conductive material, so that the electrical connection between the electrode on the lower side of the piezoelectric sensor 11 and the second flexible conductive body 13 is realized through the reinforcing sheet 14, or the electrical connection between the electrode on the upper side of the piezoelectric sensor 11 and the first flexible conductive body 12 is realized through the reinforcing sheet 14.

In some exemplary embodiments, as shown in fig. 2, 3 and 5, the first flexible electrical conductor 12 is cylindrical, and has conductive double-sided adhesive on both the upper and lower end surfaces, and the diameter and thickness thereof can be determined according to the overall requirements of the system end.

As shown in fig. 2, 3 and 5, the piezoelectric sensor 11 is a cylindrical sheet, the positive and negative electrodes of which are distributed on the upper and lower end faces of the sheet, the upper end face of the sheet is assembled with the first flexible conductor 12 by gluing, and the lower end face is assembled with the reinforcing sheet 14 by welding or conductive adhesive gluing. The distribution of the positive and negative electrodes of the piezoelectric sensor 11 need not be fixed, that is, the positive electrode (or negative electrode) may be on the upper end surface, and the negative electrode (or positive electrode) may be on the lower end surface. As shown in fig. 1, when the touch device includes a plurality of sensor assemblies 1, the positive and negative electrodes of the piezoelectric sensors 11 in the plurality of sensor assemblies 1 may not be consistent, that is, part of the piezoelectric sensors 11 may have positive electrodes on the upper end surface and negative electrodes on the lower end surface, part of the piezoelectric sensors 11 may have positive electrodes on the lower end surface and negative electrodes on the upper end surface, and the distribution of the positive and negative electrodes of the plurality of piezoelectric sensors 11 may be designed and adjusted by algorithm software according to the touch detection and vibration feedback requirements.

As shown in fig. 2, 3 and 5, the second flexible conductor 13 is cylindrical, and both the upper and lower end surfaces thereof are provided with conductive double-sided tapes, and the reinforcing sheet 14 may be cylindrical sheet-shaped and fixed on the upper end surface of the second flexible conductor 13 by gluing.

As shown in fig. 2, 3 and 5, the second flexible electrical conductor 13 is disposed in correspondence with the first flexible electrical conductor 12 and may provide structural support for the piezoelectric sensor 11. The second flexible conductor 13 and the first flexible conductor 12 can also provide conductive leading-out signals for the piezoelectric sensor 11, and the signals are led into a corresponding circuit board and then enter the control chip 4 from the circuit board for processing.

As shown in fig. 2, 3 and 5, the first flexible conductor 12 is mounted above and the second flexible conductor 13 is mounted below, the second flexible conductor 13 having a larger diameter than the first flexible conductor 12. Alternatively, as shown in FIG. 7, the diameter of the first flexible electrical conductor 12 may be larger than the diameter of the second flexible electrical conductor 13.

The diameter of the reinforcing sheet 14 is larger than that of the piezoelectric sensor 11, and one side of the reinforcing sheet 14 is fixed to the piezoelectric sensor 11 by welding or gluing, and the other side is fixed to the first flexible conductor 12 or the second flexible conductor 13 with a larger cross-sectional area (for example, a larger diameter) by gluing. As shown in fig. 2, 3 and 5, the first flexible conductor 12, the piezoelectric sensor 11, the reinforcing sheet 14 and the second flexible conductor 13 may overlap each other at their center lines and may have successively larger diameters. Alternatively, as shown in fig. 7, the center lines of the first flexible conductor 12, the reinforcing sheet 14, the piezoelectric sensor 11, and the second flexible conductor 13 may overlap and the diameters may decrease in this order.

In some exemplary embodiments, one of the first flexible electrical conductor 12 and the second flexible electrical conductor 13 is provided with a through hole penetrating in the thickness direction.

One of the first flexible conductor 12 and the second flexible conductor 13 is provided with a through hole, which can reduce the contact area with the piezoelectric sensor 11, enhance the stress concentration and cause the piezoelectric sensor 11 to generate larger deformation.

In some exemplary embodiments, as shown in fig. 5 and fig. 6, a through hole (i.e., the second through hole 131) is opened on the second flexible conductive body 13, and the projection of the first flexible conductive body 12 on the second flexible conductive body 13 falls within the range of the second through hole 131.

As shown in fig. 5 and fig. 6, a cylindrical second through hole 131 may be formed in the center of the second flexible conductive body 13, the center line of the cylindrical first flexible conductive body 12 may coincide with the center line of the second through hole 131, and the diameter of the first flexible conductive body 12 is smaller than or equal to the diameter of the second through hole 131, so that the projection of the first flexible conductive body 12 on the second flexible conductive body 13 falls within the range of the second through hole 131. Of course, the shapes of the first flexible electrical conductor 12 and the second through hole 131 are not limited to the cylindrical shape.

In other exemplary embodiments, as shown in fig. 7, a through hole (i.e., the first through hole 121) may be formed in the center of the first flexible conductor 12, and the projection of the second flexible conductor 13 on the first flexible conductor 12 falls within the range of the first through hole 121.

In still other exemplary embodiments, as shown in fig. 3 and 4, no through hole is opened on the first flexible electrical conductor 12 and the second flexible electrical conductor 13, and the diameter of the cylindrical first flexible electrical conductor 12 is smaller than that of the cylindrical second flexible electrical conductor 13.

In the sensor assembly 1 shown in fig. 3, the second flexible conductor 13 can normally support the piezoelectric sensor 11, the pressing force of the user is F1, the supporting force of the electronic device on the sensor assembly 1 is F2, and the piezoelectric sensor 11 is deformed under the actions of F1 and F2.

In the sensor assembly 1 shown in fig. 5, the second flexible conductive body 13 can perform stress concentration support on the piezoelectric sensor 11, the pressing force of the user is F1, and the supporting acting force of the electronic device on the sensor assembly 1 is F2', but an additional moment is added, so that the piezoelectric sensor 11 can generate a larger deformation under the action of a stress concentration mechanism, which is beneficial to improving the detection sensitivity and the vibration feedback strength of the piezoelectric sensor 11, so as to meet different design requirements.

As shown in fig. 7, in the sensor assembly 1, when a user presses, the piezoelectric sensor 11 also deforms greatly, which is beneficial to improving the detection sensitivity and the vibration feedback strength of the piezoelectric sensor 11.

In some exemplary embodiments, the piezoelectric sensor 11 may be a piezoelectric ceramic sensor, a piezoelectric film sensor, a piezoelectric crystal sensor, or other sensors having piezoelectric effect.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a touch device, including: a touch pad 2, the sensor assembly 1, a circuit board and a control chip 4.

The circuit board is electrically connected to the two electrodes of the piezoelectric sensor 11 of the sensor assembly 1 via the first flexible electrical conductor 12 and the second flexible electrical conductor 13 of the sensor assembly 1, respectively.

The control chip 4 is electrically connected to the circuit board 31, and the control chip 4 is configured to receive the detection signal of the piezoelectric sensor 11 of the sensor assembly 1 through the circuit board and control the piezoelectric sensor 11 to perform vibration feedback.

In the touch device, two electrodes of the piezoelectric sensor 11 are electrically connected to the circuit board through the first flexible conductor 12 and the second flexible conductor 13, and the circuit board is electrically connected to the control chip 4, so that the piezoelectric sensor 11 and the control chip 4 can transmit signals. When the touch pad 2 is pressed, the pressing force applied to the touch pad 2 and the generated deformation can be transmitted to the piezoelectric sensor 11, so that the piezoelectric sensor 11 generates a detection signal, the detection signal can be transmitted to the control chip 4 through the circuit board, the control chip 4 controls the electronic device to execute corresponding operations, the control chip 4 can also transmit a control instruction to the piezoelectric sensor 11 through the circuit board, the piezoelectric sensor 11 vibrates, and the vibration can be transmitted to the touch pad 2, so that a user can obtain vibration feedback after touch.

In some exemplary embodiments, two circuit boards are provided, namely a first circuit board 31 and a second circuit board 32, the sensor assembly 1 is disposed between the first circuit board 31 and the second circuit board 32, the first flexible conductor 12 and the second flexible conductor 13 on two sides of the piezoelectric sensor 11 are electrically connected to the first circuit board 31 and the second circuit board 32, respectively, and the touch panel 2 is disposed on one side of the first circuit board 31 away from the second circuit board 32.

The touch device includes a first circuit board 31 and a second circuit board 32, and both the first circuit board 31 and the second circuit board 32 are electrically connected to the control chip 4. The first circuit board 31 may be disposed on the upper side of the sensor assembly 1 and electrically connected to the first flexible conductor 12 on the upper side of the piezoelectric sensor 11, and the second circuit board 32 may be disposed on the lower side of the sensor assembly 1 and electrically connected to the second flexible conductor 13 on the lower side of the piezoelectric sensor 11, so that the two electrodes on the upper and lower sides of the piezoelectric sensor 11 are electrically connected to the first circuit board 31 and the second circuit board 32 through the first flexible conductor 12 and the second flexible conductor 13, respectively.

The touch panel 2 is disposed on a side of the first circuit board 31 away from the second circuit board 32 and abuts against the first circuit board 31, so that a pressing force applied to the touch panel 2 and a generated deformation can be transmitted to the piezoelectric sensor 11 through the first circuit board 31 and the first flexible conductor 12, the piezoelectric sensor 11 generates a detection signal, the detection signal can be transmitted to the control chip 4 through a circuit board assembly, the control chip 4 controls the electronic device to execute a corresponding operation, the control chip 4 can also transmit a control instruction to the piezoelectric sensor 11 through the circuit board assembly, so that the piezoelectric sensor 11 vibrates, and the vibration can be transmitted to the touch panel 2 through the first flexible conductor 12 and the first circuit board 31, so that a user can obtain a vibration feedback after touch.

As shown in fig. 2, the first circuit board 31 is on the top, the second circuit board 32 is on the bottom, the first circuit board 31 and the first flexible conductor 12 can be fixed by adhesive, and the second circuit board 32 and the second flexible conductor 13 can be fixed by adhesive. The touch pad 2 is disposed above the first circuit board 31, and the touch pad 2 is attached to the first circuit board 31 and can be fixed by gluing.

In other exemplary embodiments, one circuit board is provided, which is the first circuit board 31, the first circuit board 31 is disposed between the sensor assembly 1 and the touch pad 2, and the first flexible conductor 12 and the second flexible conductor 13 on the side where the electrodes of the piezoelectric sensor 11 are located are both disposed on the side close to the first circuit board 31 and are both electrically connected to the first circuit board 31.

The touch device includes a circuit board, which may be a first circuit board 31 disposed on the upper side of the sensor assembly 1, and the first flexible conductor 12 and the second flexible conductor 13 disposed on the upper side of the piezoelectric sensor 11 (both electrodes are disposed on the upper side of the piezoelectric sensor 11) are electrically connected to the first circuit board 31. The first circuit board 31 and the first flexible conductor 12, and the first circuit board 31 and the second flexible conductor 13 may be fixed by adhesive. The touch pad 2 is disposed above the first circuit board 31, and the touch pad 2 is attached to the first circuit board 31 and can be fixed by gluing.

In some exemplary embodiments, the touch device includes a circuit board, which is a second circuit board 32, the second circuit board 32 is disposed on a side of the sensor assembly 1 away from the touch pad 2, and the first flexible conductor 12 and the second flexible conductor 13 on a side of the piezoelectric sensor 11 where the electrodes are located are disposed on a side close to the second circuit board 32 and are electrically connected to the second circuit board 32.

The touch device includes a circuit board, which may be a second circuit board 32 disposed on the lower side of the sensor assembly 1, and the first flexible conductor 12 and the second flexible conductor 13 disposed on the lower side of the piezoelectric sensor 11 (both electrodes are disposed on the lower side of the piezoelectric sensor 11) are electrically connected to the second circuit board 32. The second circuit board 32 and the first flexible conductor 12, and the second circuit board 32 and the second flexible conductor 13 may be fixed by gluing. The touch pad 2 is disposed above the first flexible conductor 12, and the touch pad 2 is attached to the first flexible conductor 12 and can be fixed by gluing.

In some exemplary embodiments, as shown in fig. 1, the touch pad 2 has a touch area 21, the sensor elements 1 are provided in plurality, and the projection of the plurality of sensor elements 1 on the touch pad 2 falls within the range of the touch area 21.

When the area of the touch area 21 is large and the board areas of the first circuit board 31 and the second circuit board 32 on which the sensor devices 1 are mounted are also large, the number of the sensor devices 1 can be increased by optimizing the layout design, so that the vibration inductance with the same effect can be realized, and the conventional vibration motors are limited by the thickness or cost factors, which cannot be stacked.

Due to the arrangement of the sensor assemblies 1, the touch pressing operation of a user at any position of the touch area 21 can be detected and vibration feedback is carried out, so that the touch detection and vibration feedback sensitivity of the touch device is improved, and the use experience of the touch device is improved.

In some exemplary embodiments, the touch area 21 has a first line of symmetry and a second line of symmetry perpendicular to each other, and the plurality of sensor elements 1 are symmetrically distributed about the first line of symmetry and the second line of symmetry.

The plurality of sensor elements 1 are symmetrically distributed about a symmetry line and a second symmetry line of the touch area 21, so as to ensure that stable and consistent detection sensitivity and vibration feedback can be generated when touch operation is performed at any position on the touch area 21.

In some exemplary embodiments, as shown in fig. 1 and 8, the touch area 21 has a rectangular shape, a first line of symmetry may be a horizontal line of symmetry, a second line of symmetry may be a vertical line of symmetry, and the plurality of sensor elements 1 are symmetrically distributed about the first line of symmetry and the second line of symmetry.

In some exemplary embodiments, the plurality of sensor elements 1 are arranged in a plurality of rows (at least two rows), the interval between two adjacent sensor elements 1 in each row (which may be the minimum distance between the edges of two adjacent sensor elements 1) is equal, and the interval between corresponding sensor elements 1 in two adjacent rows is equal, so that the plurality of sensor elements 1 are uniformly distributed corresponding to the touch area 21, so as to achieve the balance of the detection sensitivity and the feedback of the vibration strength in the entire touch area of the touch pad 2. The interval between two adjacent sensor units 1 in the same row may be equal to or different from the interval between two adjacent rows of sensor units 1.

In order to ensure that a stable and consistent vibration experience can be generated at any position on the touch area 21 of the touch pad 2, it is usually necessary to assemble a plurality of sensor assemblies 1 between the first circuit board 31 and the second circuit board 32 in a certain manner. In some exemplary embodiments, as shown in fig. 8, the touch pad 2 and the touch area 21 thereon are rectangular, and three groups of 15 sensor elements are designed, namely, the sensor elements 101A-101E, 102A-102E, and 103A-103E, the three groups of sensor elements are arranged in three rows, each row has 5 sensor elements, the interval between two adjacent sensor elements (e.g., 101A-101B) in each row is equal, the interval between corresponding sensor elements (e.g., 101A-102A) in two adjacent rows is equal, and the interval between two adjacent sensor elements (e.g., 101A-101B) in the same row is equal to the interval between corresponding sensor elements (e.g., 101A-102A) in two adjacent rows.

In some exemplary embodiments, as shown in fig. 1, the touch pad 2 and the touch area 21 are rectangular, and a total of 4 sensor elements 1 are designed and arranged corresponding to four corners of the touch area 21.

In some exemplary embodiments, the plurality of sensor assemblies 1 are arranged in at least three rows, and the number of sensor assemblies 1 located in the center row is less than or equal to the number of sensor assemblies 1 located in the edge row.

In some exemplary embodiments, the plurality of sensor assemblies 1 are arranged in at least two rows, and the number of sensor assemblies 1 located in one row of the first edge is greater than the number of sensor assemblies 1 located in one row of the second edge.

Fig. 8 shows a design layout of sensor components, which in practical use can be increased or decreased according to the vibration sensing requirement, and the overall design principle is to ensure uniform and symmetrical distribution. For example, two layout modes of dense and sparse sensor assemblies can be provided, the dense layout adopts 8

sensor assemblies

101A, 101C, 101E, 102A, 102E, 103A, 103C, 103E, the sparse layout adopts 5

sensor assemblies

101A, 101E, 102C, 103A, 103E, and the rest sensor assemblies, such as 101B, 103D, and the like, are used as supplements, and can be selected and set according to actual needs.

In actual use, there are more touch pressing operations performed in a partial area of the touch area 21 than in other areas, and thus more sensor elements 1 can be disposed in an area where more touch operations are performed. If be applied to the touch device of notebook computer, touch device's touch panel 2 is fixed to the C shell, and the front portion of touch panel 2 is equipped with left touch key (pressing and shows clicking, is equivalent to left button click mouse) and right touch key (pressing and shows clicking, is equivalent to right button click mouse), presses interactive operation such as more in left touch key and right touch key department, consequently, corresponding to the front portion of touch panel 2, can set up more sensor module 1 relatively.

On the basis of the sensor component layout shown in fig. 8, a non-uniform, symmetrically arranged layout of the sensor components may be provided. Among the three rows of sensor elements, the number of sensor elements in the lower row (corresponding to the left and right touch keys on the front side of the touch panel 2) is the largest, and the number of sensor elements in the middle row may be less than or equal to the number of sensor elements in the upper row. Such as: 9

sensor assemblies

101A, 101E, 102A, 102E, 103A, 103B, 103C, 103D, 103E may be employed, or 8

sensor assemblies

101A, 101E, 102C, 103A, 103B, 103C, 103D, 103E may be employed, or 6

sensor assemblies

101A, 101E, 102C, 103A, 103C, 103E may be employed.

In some exemplary embodiments, the entire outer surface of the touch pad 2 forms the touch area 21 of the touch pad 2. As shown in fig. 1 and 9, the entire upper plate surface (i.e., the outer surface) of the touch panel 2 forms a touch area 21.

In other exemplary embodiments, a partial area of the outer surface of the touch pad 2 forms the touch area 21 of the touch pad 2. As shown in fig. 10 and 11, a touch area 21 is formed in the middle portion of the upper plate surface (i.e., the outer surface) of the touch panel 2, and a touch pressing operation can be performed in the middle touch area 21.

A partial area of the outer surface of the touch pad 2 is used as the touch area 21, so that no gap exists around the touch area 21 after the touch pad 2 is assembled and fixed with the shell 5 of the electronic device, and the aesthetic property of the electronic device is improved.

In some exemplary embodiments, the touch pad 2 may be made of glass (the glass may be ground glass or may be coated thereon, and the spraying process is not limited), PMMA (polymethyl methacrylate), plastic, or the like.

As shown in fig. 9-11, an electronic device provided by the present invention includes the above-mentioned touch device and a housing 5, where the touch pad 2 of the touch device is fixed to the housing 5, or the touch pad 2 of the touch device and the housing 5 are an integrated structure.

In some exemplary embodiments, the housing 5 is provided with a mounting groove, and the touch pad 2 is mounted in the mounting groove and fixed to the housing 5, such as: the touch pad 2 may be fixed to the case 5 by adhesion.

In some exemplary embodiments, the touch device includes a second circuit board 32 located at the lower side (the side far from the touch pad 2) of the sensor assembly 1, and the second circuit board 32 is fixedly connected with a fixed seat in the housing 5, so that the electronic device provides a supporting force F2 or F2' to the sensor assembly 1. The holders may be fixedly connected (directly or indirectly via an intermediate connection) to the housing 5, or the holders may be integrally disposed within the housing 5.

In some exemplary embodiments, as shown in fig. 9, the electronic device may be a notebook computer, the housing 5 may be a C-shaped shell directly contacting with the thenar area of the palm of the user, the touch pad 2 may be made of glass, PMMA, plastic, etc., and the user's finger may perform command interaction with the notebook computer by operating on the touch pad 2. The touch panel 2 can be attached to a first circuit board 31, the first circuit board 31 has an electrode lead of the piezoelectric sensor 11, and correspondingly, another electrode lead of the piezoelectric sensor 11 is mounted through a second circuit board 32, and a sensor assembly 1 is disposed between the first circuit board 31 and the second circuit board 32 and serves as a core component for realizing touch detection and vibration feedback.

In some exemplary embodiments, as shown in fig. 9, the C-shell is assembled with the touch pad 2 as two separate parts, the touch pad 2 is assembled in the middle area of the front part of the C-shell, and the entire upper plate surface of the touch pad 2 serves as the touch area 21.

In some exemplary embodiments, as shown in fig. 10 and 11, the C-casing and the touch pad 2 are assembled together as two separate parts, the touch pad 2 is assembled at the front of the C-casing, the touch pad 2 extends substantially along the entire width (left-right direction in fig. 10 and 11) of the C-casing, and a partial area (e.g., a middle area) of the upper plate surface of the touch pad 2 serves as the touch area 21, so that there is no gap around the touch area 21 in appearance, and the appearance is beautiful.

It should be understood that the electronic device may be any other electronic device requiring a force switch besides a notebook computer.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. A sensor assembly, comprising: the piezoelectric sensor comprises two electrodes, the first flexible conductor and the second flexible conductor are respectively and electrically connected with the two electrodes of the piezoelectric sensor, and the first flexible conductor and the second flexible conductor are arranged to be electrically connected with a circuit board.

2. The sensor assembly of claim 1, wherein the two electrodes of the piezoelectric sensor are located on two sides, respectively, and the first flexible electrical conductor and the second flexible electrical conductor are located on two sides of the piezoelectric sensor, respectively; alternatively, the first and second electrodes may be,

the two electrodes of the piezoelectric sensor are positioned on the same side, and the first flexible conductor and the second flexible conductor are arranged on the side where the electrodes of the piezoelectric sensor are positioned.

3. The sensor assembly of claim 1, wherein the two electrodes of the piezoelectric sensor are located on two sides, respectively, and the first flexible electrical conductor and the second flexible electrical conductor are located on two sides of the piezoelectric sensor, respectively;

the first flexible electric conductor and the second flexible electric conductor are both conductive foam, and one of the first flexible electric conductor and the second flexible electric conductor is provided with a through hole penetrating along the thickness direction.

4. The sensor assembly of claim 3, wherein the through hole opens on the second flexible conductor, and a projection of the first flexible conductor on the second flexible conductor falls within the range of the through hole;

or the through hole is formed in the first flexible conductor, and the projection of the second flexible conductor on the first flexible conductor is in the range of the through hole.

5. The sensor assembly of any one of claims 1-4, further comprising a stiffener disposed between the piezoelectric sensor and the second flexible electrical conductor or between the piezoelectric sensor and the first flexible electrical conductor.

6. A touch device, comprising:

a touch pad;

the sensor assembly of any one of claims 1 to 5;

7. The touch device of claim 6, wherein the circuit board includes two first and second circuit boards, the sensor assembly is disposed between the first and second circuit boards, the first and second flexible conductors on two sides of the piezoelectric sensor are electrically connected to the first and second circuit boards, and the touch pad is disposed on a side of the first circuit board away from the second circuit board; alternatively, the first and second electrodes may be,

the first circuit board is arranged between the sensor assembly and the touch pad, and the first flexible conductor and the second flexible conductor which are positioned on the side where the electrodes of the piezoelectric sensor are positioned are both arranged on one side close to the first circuit board and are both electrically connected with the first circuit board; alternatively, the first and second electrodes may be,

the first flexible conductor and the second flexible conductor are arranged on one side close to the second circuit board and are electrically connected with the second circuit board.

8. The touch device according to claim 6 or 7, wherein the touch pad has a touch area, the sensor element is provided in plurality, and a projection of the plurality of sensor elements on the touch pad falls within the touch area, wherein:

the touch area is provided with a first symmetrical line and a second symmetrical line which are perpendicular to each other, and the sensor components are symmetrically distributed relative to the first symmetrical line and the second symmetrical line; alternatively, the first and second electrodes may be,

the sensor assemblies are arranged in at least three rows, and the number of the sensor assemblies positioned in the central row is less than or equal to the number of the sensor assemblies positioned in the edge row; alternatively, the first and second electrodes may be,

the plurality of sensor assemblies are arranged in at least two rows, and the number of sensor assemblies in one row at the first edge is larger than the number of sensor assemblies in one row at the second edge.

9. An electronic device comprising the touch device of any one of claims 6 to 8 and a housing, wherein a touch pad of the touch device is fixed to the housing, or wherein the touch pad of the touch device and the housing are of an integral structure.

10. The electronic device of claim 9, wherein the second circuit board of the touch device is fixedly connected to a fixing base in the housing.