CN221225476U - Touch-pressure sensing module, earphone and electronic device - Google Patents

Abstract

The application relates to a touch-pressure sensing module, an earphone and an electronic device, wherein a first upper electrode layer comprises at least two upper polar plates which are distributed at intervals along a second direction parallel to a touch-pressure surface; the lower electrode plate, the elastic substrate layer and the at least two upper electrode plates are used for jointly forming at least two sliding sensors; the upper electrode layer, the second elastic substrate layer and the upper electrode layer are used for responding to the touch action applied on the touch surface together to generate a pressure sensing signal; the at least two sliding sensors are configured to generate a target sliding sensing signal for indicating sliding between the at least two sliding sensors in response to a sliding motion applied to the pressing surface. The touch sensing module provided by the embodiment has the advantages of low cost, simple structure and touch sliding direction judging function.

Description

Touch-pressure sensing module, earphone and electronic device

Technical Field

The present application relates to the field of touch technologies, and in particular, to a touch sensing module, an earphone, and an electronic device.

Background

With the rapid development of touch technology, people use various keyboards, touch screens or headphones in daily life. In order to improve the aesthetic degree of the touch structure, touch sensing technology is widely adopted in electronic products with touch functions.

At present, an electronic device with a touch direction judging function generally adopts a software algorithm to determine a touch sliding gravity center and calculate a sliding distance and a sliding direction, has high requirements on signal sampling precision and computing capacity of a detection chip, and has the defects of complex product structure, high cost and more occupied signal channels, and cannot be applied to electronic products such as earphones, toys and the like with low cost.

Disclosure of utility model

Accordingly, it is necessary to provide a touch sensing module, an earphone and an electronic device with low cost, simple structure and a function of judging the direction of the touch.

One aspect of the application provides a touch sensing module, comprising a pressing column fixed on the lower surface of a touch surface, and at least two sliding sensors, a supporting plate and a flexible electrode layer, wherein the sliding sensors are positioned right below the touch surface and are sequentially distributed along a first direction perpendicular to the touch surface; the at least two sliding sensors are positioned between the touch surface and the supporting plate and are fixed on the top surface of the supporting plate at intervals along a second direction parallel to the touch surface; the part of the bottom surface of the support plate, which covers the flexible electrode layer, comprises an upper electrode layer; opposite ends of the flexible electrode layer along the second direction are fixed on the bottom surface of the supporting plate; the pressing column sequentially penetrates through the sliding sensor and the middle part of the supporting plate along the first direction and extends to the top surface of the flexible electrode layer, and is used for pressing down the middle part of the flexible electrode layer in the process of moving downwards along the pressing surface, and increasing the distance between the middle part of the flexible electrode layer and the upper electrode layer, so that the pressure sensor formed by the upper electrode layer and the flexible electrode layer together generates a pressure sensing signal; wherein the at least two slide sensors are configured to generate a target slide sensing signal for indicating a slide between the at least two slide sensors in response to a touch movement applied to the touch surface.

In the touch sensing module in the above embodiment, at least two sliding sensors, a support plate and a flexible electrode layer are sequentially stacked along a first direction perpendicular to the touch surface are arranged under the touch surface; the at least two sliding sensors are positioned between the touch surface and the supporting plate and are fixed on the top surface of the supporting plate at intervals along a second direction parallel to the touch surface; the part of the bottom surface of the supporting plate, which covers the flexible electrode layer, comprises an upper electrode layer, and the pressure sensor formed by the upper electrode layer and the flexible electrode layer is used for responding to the touch action applied on the touch surface to generate a pressure sensing signal; wherein the at least two slide sensors are configured to generate a target slide sensing signal for indicating a slide between the at least two slide sensors in response to a touch movement applied to the touch surface. The middle part of the flexible electrode layer is moved downwards under the action of the touch action applied to the touch surface by using the pressing column, so that the distance between the flexible electrode layer and the upper electrode layer is increased, and the capacitance between the flexible electrode layer and the upper electrode layer is reduced; therefore, whether the touch operation is effective or not can be determined by detecting whether the capacitance reduction amount caused in the process of downwards moving the flexible electrode layer relative to the upper electrode layer is larger than or equal to a preset threshold value, so that a preset touch control function is further triggered; when the touch operation disappears, the flexible electrode layer is reset due to the elastic deformation of the flexible electrode layer to restore the volume so as to wait for the next touch operation. Through setting up at least two sliding sensor and being located between touching pressure face, the backup pad, and along being on a parallel with touching pressure face's second direction interval distribution, be convenient for detect under the condition of the slip induction signal of two sliding sensor in the default time, judge to have touching sliding action between these two sliding sensor for touching pressure induction module can directly generate and be used for instructing the gliding target slip induction signal between these two sliding sensor, need not to rely on the computational power of detecting the chip. The support plate provides a support substrate for at least two sliding sensors, and simultaneously provides mounting and fixing main bodies for the two opposite ends of the flexible electrode layer along the second direction, and part of the lower surface of the support plate serves as an upper electrode layer of the pressure sensor, so that the volume of the touch pressure sensing module can be effectively reduced, the stability of the structure of the touch pressure sensing module is improved, and the touch pressure sensing sensitivity of the pressure sensor can be ensured.

In one embodiment, the flexible electrode layer comprises a flexible substrate layer and a lower electrode layer, and two opposite ends of the flexible substrate layer along the second direction are fixed on the bottom surface of the supporting plate; the lower electrode layer is located on the top surface or the bottom surface of the flexible substrate layer at a portion between opposite ends in the second direction.

In one embodiment, the pressing column comprises a base and a connecting column, and the base is fixed on the bottom surface of the pressing surface; the connecting column is fixed on the bottom surface of the base, is used for penetrating through the middle part of a sliding sensor and the middle part of the supporting plate along the first direction, and extends to the top surface of the flexible electrode layer; the base station covers the orthographic projection of the connecting column on the top surface of the upper electrode layer, the base station is used for being limited to stop on the top surface of the sliding sensor in the process of moving downwards along the contact surface, and the connecting column is used for downwards moving in the middle of the lower pressing flexible electrode layer in the process of moving downwards along the contact surface.

In one embodiment, the connecting post is cylindrical; the top surface of the connecting column is positioned in the middle of the bottom surface of the base station.

In one embodiment, the touch sensing module further includes a second fixing column and a third fixing column located at two opposite sides of the upper electrode layer along the second direction; the second fixing column and the third fixing column are used for fixing the opposite ends of the supporting plate along the second direction on the bottom surface of the touch surface.

In one embodiment, the at least two sliding sensors comprise a lower electrode plate, an elastic substrate layer and an upper electrode plate, which are sequentially stacked along a first direction away from the top surface of the support plate; the upper electrode plate comprises a first upper electrode plate, a second upper electrode plate and a third upper electrode plate which are sequentially and alternately distributed on the top surface of the elastic substrate layer along the second direction; the hold down post is configured to: the middle part of the second upper polar plate, the elastic substrate layer, the lower electrode plate and the middle part of the supporting plate are sequentially penetrated along the first direction and extend to the top surface of the flexible electrode layer.

In one embodiment, the first upper electrode plate, the elastic substrate layer and the lower electrode plate are used to form a first sliding sensor together; the second upper polar plate, the elastic substrate layer and the lower electrode plate are used for jointly forming a second sliding sensor; the third upper polar plate, the elastic substrate layer and the lower electrode plate are used for jointly forming a third sliding sensor; the first sliding sensor is used for responding to the touch sliding action applied to the first upper polar plate and generating a first sliding sensing signal; the second sliding sensor is used for responding to the touch sliding action applied to the second upper polar plate and generating a second sliding induction signal; the third sliding sensor is used for responding to the touch sliding action applied to the third upper polar plate and generating a third sliding induction signal; the touch pressure sensing module further comprises a detection circuit, wherein the detection circuit is electrically connected with the upper electrode layer, the first sliding sensor, the second sliding sensor and the third sliding sensor and is used for receiving at least two of the first sliding sensing signal, the second sliding sensing signal and the third sliding sensing signal and generating a target sliding sensing signal for indicating sliding among any two of the first sliding sensor, the second sliding sensor and the third sliding sensor.

In one embodiment, the touch sensing module further includes a first ground layer and a second ground layer located at two opposite sides of the upper electrode layer along the second direction; the first grounding layer and the second grounding layer are both fixed on the lower surface of the supporting plate and are used for grounding the supporting plate; the two ends of the flexible electrode layer, which are opposite along the second direction, are respectively connected with the first grounding layer and the second grounding layer.

Another aspect of the present application provides an earphone, including a housing with a cavity therein, and a touch sensing module according to any one of the embodiments of the present application, where the touch sensing module is at least partially located in the cavity, and a touch surface of the touch sensing module is at least partially a touch surface of the housing.

In another aspect, an electronic device includes a touch sensing module according to any of the embodiments of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other embodiments of the drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a touch sensor module according to an embodiment of the application.

Reference numerals illustrate:

100. A touch surface; 10. a sliding sensor; 20. an elastic substrate layer; 31. a lower electrode plate; 30. a support plate; 32. an upper electrode layer; 40. a flexible electrode layer; 41. a flexible substrate layer; 42. a lower electrode layer; 60. pressing down a column; 61. a base station; 62. a connecting column; 70. a second fixing column; 80. a third fixing column; 91. a first ground layer; 92. a second ground layer; 111. a first upper plate; 112. a second upper plate; 113. and a third upper plate.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In describing positional relationships, when an element such as a layer substrate is referred to as being "on" another film layer, it can be directly on the other film layer or intervening film layers may also be present, unless otherwise specified. Further, when a layer is referred to as being "under" another layer, it can be directly under, or one or more intervening layers may also be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present. The terms "upper" and "lower" used herein refer to the side of the pressure sensor that is relatively closer to the user as the "upper" and the side that is relatively farther from the user as the "lower" relative to the extent to which the pressure sensor is closer to the user during use.

Where the terms "comprising," "having," and "including" are used herein, another component may also be added unless a specifically defined term is used, such as "consisting of only," "… …," etc. Unless mentioned to the contrary, singular terms may include plural and are not to be construed as being in a singular.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" or "connected" should be interpreted broadly, and for example, may be a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two components. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality", "mutual", "overlapping", "lamination" and "several" means two or more.

In some embodiments, a touch sensing module is provided, including a pressing post fixed on a lower surface of a touch surface, and at least two sliding sensors, a support plate and a flexible electrode layer, wherein the sliding sensors are located right below the touch surface and are sequentially distributed along a first direction perpendicular to the touch surface; the at least two sliding sensors are positioned between the touch surface and the supporting plate and are fixed on the top surface of the supporting plate at intervals along a second direction parallel to the touch surface; the part of the bottom surface of the support plate, which covers the flexible electrode layer, comprises an upper electrode layer; opposite ends of the flexible electrode layer along the second direction are fixed on the bottom surface of the supporting plate; the pressing column sequentially penetrates through the sliding sensor and the middle part of the supporting plate along the first direction and extends to the top surface of the flexible electrode layer, and is used for pressing down the middle part of the flexible electrode layer in the process of moving downwards along the pressing surface, and increasing the distance between the middle part of the flexible electrode layer and the upper electrode layer, so that the pressure sensor formed by the upper electrode layer and the flexible electrode layer together generates a pressure sensing signal; wherein the at least two slide sensors are configured to generate a target slide sensing signal for indicating a slide between the at least two slide sensors in response to a touch movement applied to the touch surface.

Specifically, at least two sliding sensors, a support plate and a flexible electrode layer which are sequentially stacked along a first direction perpendicular to a pressing surface are arranged right below the pressing surface; the at least two sliding sensors are positioned between the touch surface and the supporting plate and are fixed on the top surface of the supporting plate at intervals along a second direction parallel to the touch surface; the part of the bottom surface of the supporting plate, which covers the flexible electrode layer, comprises an upper electrode layer, and the pressure sensor formed by the upper electrode layer and the flexible electrode layer is used for responding to the touch action applied on the touch surface to generate a pressure sensing signal; wherein the at least two slide sensors are configured to generate a target slide sensing signal for indicating a slide between the at least two slide sensors in response to a touch movement applied to the touch surface. The middle part of the flexible electrode layer is moved downwards under the action of the touch action applied to the touch surface by using the pressing column, so that the distance between the flexible electrode layer and the upper electrode layer is increased, and the capacitance between the flexible electrode layer and the upper electrode layer is reduced; therefore, whether the touch operation is effective or not can be determined by detecting whether the capacitance reduction amount caused in the process of downwards moving the flexible electrode layer relative to the upper electrode layer is larger than or equal to a preset threshold value, so that a preset touch control function is further triggered; when the touch operation disappears, the flexible electrode layer is reset due to the elastic deformation of the flexible electrode layer to restore the volume so as to wait for the next touch operation. Through setting up at least two sliding sensor and being located between touching pressure face, the backup pad, and along being on a parallel with touching pressure face's second direction interval distribution, be convenient for detect under the condition of the slip induction signal of two sliding sensor in the default time, judge to have touching sliding action between these two sliding sensor for touching pressure induction module can directly generate and be used for instructing the gliding target slip induction signal between these two sliding sensor, need not to rely on the computational power of detecting the chip. The support plate provides a support substrate for at least two sliding sensors, and simultaneously provides mounting and fixing main bodies for the two opposite ends of the flexible electrode layer along the second direction, and part of the lower surface of the support plate serves as an upper electrode layer of the pressure sensor, so that the volume of the touch pressure sensing module can be effectively reduced, the stability of the structure of the touch pressure sensing module is improved, and the touch pressure sensing sensitivity of the pressure sensor can be ensured.

In some embodiments, referring to fig. 1, a touch sensing module includes a pressing post 60 fixed on a lower surface of a touch surface 100, and three sliding sensors 10, a supporting plate 30 and a flexible electrode layer 40 located right below the touch surface 100 and sequentially distributed along a first direction (e.g. oy direction) perpendicular to the touch surface 100; the three sliding sensors 10 are located between the pressing surface 100 and the supporting plate 30, and are fixed on the top surface of the supporting plate 30 at intervals along a second direction (for example, ox direction) parallel to the pressing surface 100; the portion of the bottom surface of the support plate 30 covering the flexible electrode layer 40 includes the upper electrode layer 32; opposite ends of the flexible electrode layer 40 in the second direction are fixed to the bottom surface of the support plate 30; the pressing post 60 sequentially penetrates through a sliding sensor 10 and the middle part of the supporting plate 30 along the first direction and extends to the top surface of the flexible electrode layer 40, and is used for pressing down the middle part of the flexible electrode layer 40 in the process of following the pressing surface 100 to move downwards, and increasing the distance between the middle part of the flexible electrode layer 40 and the upper electrode layer 32, so that the pressure sensor formed by the upper electrode layer 32 and the flexible electrode layer 40 generates a pressure sensing signal. Since the flexible electrode layer 40 (corresponding to the lower electrode of the pressure sensor) is gradually separated from the upper electrode layer 32 (corresponding to the upper electrode of the pressure sensor) attached to the bottom surface of the support plate 30 during the pressing down of the pressing down column 60, the capacitance value of the pressure sensor is reduced from the original capacitance value. Further, the at least two slide sensors 10 are configured to generate a target slide sensing signal for indicating a slide between the at least two slide sensors 10 in response to a touch slide action applied to the touch surface 100.

In some embodiments, please continue to refer to fig. 1, the pressing post 60 includes a base 61 and a connecting post 62, the base 61 is fixed on the bottom surface of the pressing surface 100; the connecting post 62 is fixed to the bottom surface of the base 61, and is used for penetrating through the middle part of a sliding sensor 10 and the middle part of the supporting plate 30 along a first direction (such as the oy direction) and extending to the top surface of the flexible electrode layer 40; wherein, the orthographic projection of the top surface of the upper electrode layer 32 of the base 61 covers the orthographic projection of the top surface of the upper electrode layer 32 of the connecting post 62, and the base 61 is used for being limited to stop on the top surface of the sliding sensor 10 in the process of following the downward movement of the pressing surface 100, so as to avoid the excessive pressing of the sliding sensor 10 by the connecting post 62 and influence the service life of the sliding sensor 10; the connection post 62 serves to push down the middle portion of the flexible electrode layer 40 in the course of following the push down of the touch down surface 100.

In some embodiments, please continue to refer to fig. 1, the base 61 and the connecting post 62 may be integrally connected, the outer diameter of the base 61 is larger than that of the connecting post 62, and the sliding sensor 10 and the supporting plate 30 are provided with through holes and are adapted to the connecting post 62. In the process that the lower pressing column 60 is stressed and moves downwards along the direction of the vertical pressing surface, the base table 61 stays on the top surface of the sliding sensor 10, and the lower pressing column 62 penetrates through the sliding sensor 10 and the supporting plate 30 and extends to the top surface of the flexible electrode layer 40, so that in the process that the lower pressing column 60 moves downwards along the direction of the vertical pressing surface, the middle part of the flexible electrode layer 40 can be driven to move downwards, the distance between the flexible electrode layer 40 and the upper electrode layer 32 is increased, and the capacitance between the flexible electrode layer 40 and the upper electrode layer 32 is reduced.

In some embodiments, referring to fig. 1, the connecting post 62 is cylindrical; the top surface of the connecting post 62 is located in the middle of the bottom surface of the base 61, so that the base 61 is used to limit the downward moving distance of the sliding sensor 10, so that the pressing post 60 can penetrate through a sliding sensor 10, the supporting plate 30 and press down the flexible electrode layer 40, and the sensitivity of the touch sensing module to pressure sensing is increased while the influence of the service life of the sliding sensor 10 caused by excessive compression is avoided.

In some embodiments, referring to fig. 1, the touch sensing module further includes a second fixing post 70 and a third fixing post 80 located on two opposite sides of the upper electrode layer 32 along the second direction (e.g. ox direction); the second fixing post 70 and the third fixing post 80 are used for fixing opposite ends of the support plate 30 along the second direction to the bottom surface of the touch surface 100, so that the structural stability and the operational reliability of the touch sensing module can be improved while the volume of the touch sensing module is not increased.

In some embodiments, referring to fig. 1, each sliding sensor 10 includes a lower electrode plate 31, an elastic substrate layer 20, and an upper electrode plate (not shown) sequentially stacked along a first direction (e.g., the oy direction) away from the top surface of the support plate 30; the upper electrode plate comprises a first upper electrode plate 111, a second upper electrode plate 112 and a third upper electrode plate 113 which are sequentially and alternately distributed on the top surface of the elastic substrate layer 20 along a second direction (for example, the ox direction); the hold-down post 60 is configured to: the middle portion of the second upper electrode plate 112, the elastic base material layer 20, the lower electrode plate 31, and the middle portion of the support plate 30 are sequentially penetrated in the first direction, and extend to the top surface of the flexible electrode layer 40.

In some embodiments, please continue to refer to fig. 1, the first upper electrode plate 111, the elastic substrate layer 20 and the lower electrode plate 31 are used to form a first sliding sensor together; the second upper electrode plate 112, the elastic substrate layer 20 and the lower electrode plate 31 are used to form a second sliding sensor together; the third upper electrode plate 113, the elastic substrate layer 20 and the lower electrode plate 31 are used to form a third sliding sensor together; the first sliding sensor is configured to generate a first sliding sensing signal in response to a sliding motion applied to the first upper plate 111; the second sliding sensor is configured to generate a second sliding sensing signal in response to a sliding motion applied to the second upper plate 112; the third sliding sensor is configured to generate a third sliding sensing signal in response to a sliding action applied to the third upper plate 113; the touch sensing module further comprises a detection circuit, wherein the detection circuit is electrically connected with the upper electrode layer 32, the first sliding sensor, the second sliding sensor and the third sliding sensor, and is used for receiving at least two of the first sliding sensing signal, the second sliding sensing signal and the third sliding sensing signal and generating a target sliding sensing signal for indicating sliding among any two of the first sliding sensor, the second sliding sensor and the third sliding sensor. The flexible electrode layer 40 (corresponding to the lower electrode of the pressure sensor) may be grounded, and in the process of pressing the flexible electrode layer 40 by the pressing post 60, the interval between the middle part of the flexible electrode layer 40 and the upper electrode layer 32 is increased, so that the pressure sensing signal is detected by the detection circuit.

For example, please continue to refer to fig. 1, if the detection circuit receives the first sliding sensing signal of the first sliding sensor and the second sliding sensing signal of the second sliding sensor within a preset time, it is determined that the user has applied the sliding signal between the first sliding sensor and the second sliding sensor on the pressing surface 100; further, if the detection circuit receives the first sliding sensing signal, it is determined that the user has applied a sliding motion from the first sliding sensor to the second sliding sensor on the pressing surface 100, and otherwise, it is determined that the user has applied a sliding motion from the second sliding sensor to the first sliding sensor on the pressing surface 100.

For example, please continue to refer to fig. 1, if the detection circuit receives the second sliding sensing signal of the second sliding sensor and the third sliding sensing signal of the third sliding sensor within a preset time, it is determined that the user has applied the sliding signal between the second sliding sensor and the third sliding sensor on the pressing surface 100; further, if the detection circuit receives the second sliding sensing signal, it is determined that the user has applied a sliding motion from the second sliding sensor to the third sliding sensor on the touch surface 100, and otherwise, it is determined that the user has applied a sliding motion from the third sliding sensor to the second sliding sensor on the touch surface 100.

For example, please continue to refer to fig. 1, if the detection circuit receives the first sliding sensing signal, the second sliding sensing signal and the third sliding sensing signal within a preset time, it is determined that the user applies the sliding signals between the first sliding sensor, the second sliding sensor and the third sliding sensor on the pressing surface 100; further, if the detection circuit receives the first sliding sensing signal, it is determined that the user has applied a sliding motion from the first sliding sensor to the third sliding sensor on the touch surface 100, and otherwise, it is determined that the user has applied a sliding motion from the third sliding sensor to the first sliding sensor on the touch surface 100.

In some embodiments, please continue to refer to fig. 1, the touch sensing module further includes a first ground layer 91 and a second ground layer 92 disposed on opposite sides of the upper electrode layer 32 along the second direction (e.g. ox direction); the first grounding layer 91 and the second grounding layer 92 are both fixed on the lower surface of the support plate 30 and are used for grounding the support plate 30; the flexible electrode layer 40 includes a first end 40a and a second end 40b opposite to each other along the second direction, wherein the first end 40a of the flexible electrode layer 40 is fixedly connected to the first ground layer 91, and the second end 40b of the flexible electrode layer 40 is fixedly connected to the second ground layer 92. For example, the first end 40a of the flexible electrode layer 40 may be provided to be bonded to the first ground layer 91 via a conductive paste, and the second end 40b of the flexible electrode layer 40 may be provided to be bonded to the second ground layer 92 via a conductive paste.

In some embodiments, please continue with fig. 1, the flexible electrode layer 40 includes a flexible substrate layer 41 and a lower electrode layer 42, wherein opposite ends of the flexible substrate layer 41 along the second direction (e.g. ox direction) are fixed on the bottom surface of the support plate 30; the lower electrode layer 42 is positioned at the bottom surface of the portion between the opposite ends of the flexible substrate layer 41 in the second direction, so that the flexible substrate layer 41 is positioned between the lower electrode layer 42 and the upper electrode layer 32, and can generate vibration tactile feedback under the action of the electric field force between the lower electrode layer 42 and the upper electrode layer 32.

In some embodiments, the lower electrode layer 42 is located on the top surface of the flexible substrate layer 41 at a portion between opposite ends in the second direction. The space between the upper electrode layer 32 and the lower electrode layer 42 can be further reduced, and the sensitivity of pressure detection can be improved. A dielectric film (not shown) may be provided between upper electrode layer 32 and lower electrode layer 42 to prevent upper electrode layer 32 from making electrical contact with lower electrode layer 42. For example, a dielectric film may be provided on the bottom surface of the upper electrode layer 32, or a dielectric film may be provided on the top surface of the lower electrode layer 42.

As an example, please continue with reference to fig. 1, by disposing at least two sliding sensors 10, a support plate 30 and a flexible electrode layer 40 sequentially stacked along a first direction (e.g., oy direction) perpendicular to the touch surface 100 directly under the touch surface 100; at least two sliding sensors 10 are located between the pressing surface 100 and the supporting plate 30, and are fixed to the top surface of the supporting plate 30 at intervals along a second direction (for example, ox direction) parallel to the pressing surface 100; the portion of the bottom surface of the support plate 30 covering the flexible electrode layer 40 includes an upper electrode layer 32, and a pressure sensor formed by the upper electrode layer 32 and the flexible electrode layer 40 is used for responding to the touch action applied on the touch surface 100 to generate a pressure sensing signal; wherein at least two of the sliding sensors 10 are configured to generate a target sliding sensing signal for indicating sliding between the at least two sliding sensors 10 in response to a tactile action applied to the tactile surface 100. The middle part of the flexible electrode layer 40 is moved downwards by the action of the pressing action applied to the pressing surface 100 by the pressing column 60, so that the distance between the flexible electrode layer 40 and the upper electrode layer 32 is increased, and the capacitance between the flexible electrode layer 40 and the upper electrode layer 32 is reduced; so that it can be determined whether the touch operation is effective to further trigger a preset touch control function by detecting whether the capacitance decrease amount caused during the downward movement of the flexible electrode layer 40 with respect to the upper electrode layer 32 is greater than or equal to a preset threshold; when the pressing operation disappears, the flexible electrode layer 40 is reset by its own elastic deformation to restore the volume to wait for the next pressing operation. By arranging at least two sliding sensors 10 between the pressing surface 100 and the supporting plate 30 and being distributed at intervals along the second direction parallel to the pressing surface 100, it is convenient to determine that a sliding action exists between the two sliding sensors 10 when the sliding sensing signals of the two sliding sensors 10 are detected within a preset time, so that the pressing sensing module can directly generate a target sliding sensing signal for indicating sliding between the two sliding sensors 10 without depending on the computing capability of a detection chip. Since the support plate 30 provides the support substrate for at least two sliding sensors 10, and provides the mounting and fixing bodies for the opposite ends of the flexible electrode layer 40 in the second direction, and the upper electrode layer 32 of the pressure sensor is provided on a part of the lower surface thereof, the volume of the touch sensing module can be effectively reduced and the stability of the structure thereof can be improved, and the touch sensing sensitivity of the pressure sensor can be ensured.

It should be noted that in the present embodiment and fig. 1, 3 upper electrode plates (the first upper electrode plate 111, the second upper electrode plate 112, and the third upper electrode plate 113) are distributed at intervals along the second direction (e.g. the ox direction) parallel to the pressing surface 100 in the elastic substrate layer 20, which is merely for illustrating how to form a plurality of sliding sensors and how to use the working principle and the structural principle of the fixing by the pressing post 60, the second fixing post 70, and the third fixing post 80, the number of the upper electrode plates in the present application is not limited to 3, for example, a plurality of upper electrode plates may be further added between the first upper electrode plate 111 and the second upper electrode plate 112, and/or a plurality of upper electrode plates may be further added between the second upper electrode plate 112 and the third upper electrode plate 113, so as to achieve the purpose of forming a plurality of sliding sensors.

In some embodiments, referring to fig. 1, upper electrode layer 32 comprises a metal mesh; the bottom electrode layer 42 is grounded, so as to reduce the complexity of wiring the touch sensing module and isolate the interference signal.

Further, the number of valid touch operations may be detected within a preset time to confirm double or triple clicking to achieve different function control. The preset time may be 0.8S-1.5S, for example, the preset time may be 0.8S, 0.9S, 1.0S, 1.2S, 1.5S, or the like.

For example, if a preset time, for example, 1S, detects two valid touch operations, it is determined that the user "double clicks", and a corresponding function, for example, increasing the volume of the earphone, may be triggered according to the "double click" command. If three valid pressing operations are detected within a preset time, for example, 1S, it is determined that the user "clicks three", and a corresponding function, for example, playing the next song, etc., may be triggered according to the "click three" command. Whether a long press operation occurs can also be determined by detecting whether the sustain time of a single active touch operation exceeds a nominal threshold time. For example, if the effective touch operation is detected to be maintained and the electric signal for indicating the decrease in capacitance is not detected within a rated threshold time, for example, 1s, it is determined that the user "long press" is performed, and a corresponding function, for example, power on or power off, may be triggered according to the "long press" command.

Further, with continued reference to fig. 1, by inputting driving voltage signals of different polarities between the upper electrode layer 32 and the lower electrode layer 42, and by inputting driving voltage signals of different polarities between the upper electrode plate (not shown) and the lower electrode plate 31. A capacitive sensor (pressure sensor) is formed between the upper electrode layer 32 and the lower electrode layer 42 to sense a pressure signal applied thereto. In the capacitive sensor, the electric field force f= (U2 # r S1)/(d 2 # S2), where U is a driving voltage applied between the upper electrode layer 32 and the lower electrode layer 42, K is an electrostatic force constant, er is a total dielectric constant between the upper electrode layer 32 and the lower electrode layer 42, S1 is an electric field effective area, d is a distance between the upper electrode layer 32 and the lower electrode layer 42, Y is an elastic modulus of the flexible substrate layer 41, and S2 is a cross-sectional area of the flexible substrate layer 41, so the magnitude of the electric field force in the capacitive sensor is inversely proportional to the distance between the upper electrode layer 32 and the lower electrode layer 42. When a finger presses the touch surface 100, the pressing post 60 presses the flexible substrate layer 41 downward, thereby increasing the distance between the upper electrode layer 32 and the lower electrode layer 42 and reducing the capacitance between the flexible electrode layer and the upper electrode layer.

As an example, referring to fig. 1, the lower electrode plate 31, the upper electrode plate (not shown), and the lower electrode layer 42 may be made of conductive materials, for example, the conductive materials may be selected from silver paste, carbon paste, nano silver wire, PEDOT, carbon nanotube, graphene, and the like.

As an example, with continued reference to fig. 1, the elastic substrate layer 20 or the flexible substrate layer 41 may include at least one of a silicone elastic layer, a rubber elastic layer, a plastic elastic layer, and the like. In order to increase the elasticity, cavities or small holes can be added in the silica gel elastic layer, the rubber elastic layer and the plastic elastic layer, for example, the silica gel elastic layer, the rubber elastic layer and the plastic elastic layer can be made into honeycomb shapes.

In some embodiments, the flexible substrate layer may also be an acrylate elastic layer, a polyurethane elastic layer, nitrile rubber, trifluoroethylene, and their corresponding organic-inorganic, organic-organic composites, and the like. The material examples of the flexible substrate layer provided in the embodiments of the present application are intended to illustrate specific working principles of the present application, and are not intended to limit the present application, and only the shape and the material of the flexible substrate layer are equivalently changed without changing the working principles of the present application, which should be considered as falling within the protection scope of the present application.

In some embodiments, an earphone includes a housing with a cavity therein, and a touch sensing module according to any of the embodiments of the present application is at least partially located in the cavity, the touch sensing module is located in the cavity, and a touch surface of the touch sensing module is at least part of a touch surface of the housing.

In some embodiments, an electronic device is provided, including a touch sensing module according to any of the embodiments of the present application.

The electronic device provided by the application is suitable type of electronic products such as consumer electronic products, household electronic products, vehicle-mounted electronic products, financial terminal products and the like. The consumer electronic products are mobile phones, tablet computers, notebook computers, desktop displays, computer integrated machines and the like. Household electronic products are, for example, intelligent door locks, televisions, refrigerators, wearable devices and the like. The vehicle-mounted electronic products are, for example, vehicle-mounted navigator, vehicle-mounted DVD and the like. Financial terminal products such as terminals for ATM machines, self-service transactions, etc.

It should be noted that, for brevity, in the structural diagrams given in the following embodiments, other structural diagrams with different view angles of the structures related to the utility model points of the embodiments of the present disclosure may be referred to each other, except for the corresponding cross-sectional structural diagrams.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. The touch sensing module is characterized by comprising a pressing column fixed on the lower surface of a touch surface, and at least two sliding sensors, a supporting plate and a flexible electrode layer, wherein the sliding sensors, the supporting plate and the flexible electrode layer are positioned right below the touch surface and are sequentially distributed along a first direction perpendicular to the touch surface;

The at least two sliding sensors are positioned between the touch surface and the supporting plate and are fixed on the top surface of the supporting plate at intervals along a second direction parallel to the touch surface;

the part of the bottom surface of the supporting plate, which covers the flexible electrode layer, comprises an upper electrode layer;

Opposite ends of the flexible electrode layer along the second direction are fixed on the bottom surface of the supporting plate;

The pressing column sequentially penetrates through the sliding sensor and the middle part of the supporting plate along the first direction and extends to the top surface of the flexible electrode layer, and is used for pressing down the middle part of the flexible electrode layer in the process of moving downwards along the pressing surface, so that the distance between the middle part of the flexible electrode layer and the upper electrode layer is increased, and a pressure sensing signal is generated by the pressure sensor formed by the upper electrode layer and the flexible electrode layer together;

Wherein the at least two sliding sensors are configured to generate a target sliding sensing signal for indicating sliding between the at least two sliding sensors in response to a sliding motion applied to the pressing surface.

2. The touch-sensitive module of claim 1, wherein the flexible electrode layer comprises:

the two opposite ends of the flexible substrate layer along the second direction are fixed on the bottom surface of the supporting plate;

and a lower electrode layer positioned on the top surface or the bottom surface of the flexible substrate layer at a portion between two opposite ends along the second direction.

3. The touch sensor module of claim 1, wherein the hold-down post comprises:

The base is fixed on the bottom surface of the touch surface;

The connecting column is fixed on the bottom surface of the base, is used for penetrating through the middle part of the sliding sensor and the middle part of the supporting plate along the first direction and extends to the top surface of the flexible electrode layer;

The front projection of the base platform on the top surface of the upper electrode layer covers the front projection of the connecting column on the top surface of the upper electrode layer, the base platform is used for being limited to stop on the top surface of the sliding sensor in the process of following the downward movement of the touch surface, and the connecting column is used for pressing down the middle part of the flexible electrode layer in the process of following the downward movement of the touch surface.

4. A touch sensing module according to claim 3, wherein the connecting post is cylindrical;

the top surface of the connecting column is positioned in the middle of the bottom surface of the base station.

5. The touch sensing module according to any one of claims 1-4, further comprising second and third fixing posts located on opposite sides of the upper electrode layer along the second direction;

the second fixing columns are used for fixing two opposite ends of the supporting plate along the second direction to the bottom surface of the touch surface.

6. The touch sensor module of claim 5, wherein the at least two sliding sensors comprise a lower electrode plate, an elastic substrate layer, and an upper electrode plate stacked in sequence along the first direction away from the top surface of the support plate;

The upper electrode plate comprises a first upper electrode plate, a second upper electrode plate and a third upper electrode plate which are sequentially and alternately distributed on the top surface of the elastic substrate layer along the second direction;

The hold-down post is configured to: the middle part of the second upper polar plate, the elastic substrate layer, the lower electrode plate and the middle part of the supporting plate are sequentially penetrated along the first direction, and extend to the top surface of the flexible electrode layer.

7. The touch sensor module of claim 6, wherein the first upper plate, the elastic substrate layer and the lower plate are used to form a first sliding sensor together;

the second upper polar plate, the elastic substrate layer and the lower polar plate are used for jointly forming a second sliding sensor;

The third upper polar plate, the elastic substrate layer and the lower polar plate are used for jointly forming a third sliding sensor;

The first sliding sensor is used for responding to the touch sliding action applied to the first upper polar plate and generating a first sliding induction signal; the second sliding sensor is used for responding to the touch sliding action applied to the second upper polar plate and generating a second sliding induction signal; the third sliding sensor is used for responding to the touch sliding action applied to the third upper polar plate and generating a third sliding induction signal;

The touch-pressure sensing module further comprises:

The detection circuit is electrically connected with the upper electrode layer, the first sliding sensor, the second sliding sensor and the third sliding sensor, and is used for receiving at least two of the first sliding sensing signal, the second sliding sensing signal and the third sliding sensing signal and generating a target sliding sensing signal for indicating sliding among any two of the first sliding sensor, the second sliding sensor and the third sliding sensor.

8. The touch sensing module of any of claims 1-4, further comprising a first ground layer, a second ground layer on opposite sides of the upper electrode layer along the second direction;

The first grounding layer and the second grounding layer are both fixed on the lower surface of the supporting plate and are used for grounding the supporting plate;

And two opposite ends of the flexible electrode layer along the second direction are respectively connected with the first grounding layer and the second grounding layer.

9. An earphone, comprising:

a housing having a cavity therein; and

The touch-sensitive module of any one of claims 1-8, at least partially located within the cavity, the touch-sensitive surface of the touch-sensitive module being at least part of the touch-sensitive surface of the housing.

10. An electronic device, comprising:

the touch sensor module of any one of claims 1-8.