CN212061131U - Sensor, signal detection device, and electronic apparatus - Google Patents
Sensor, signal detection device, and electronic apparatus Download PDFInfo
- Publication number
- CN212061131U CN212061131U CN202021955591.5U CN202021955591U CN212061131U CN 212061131 U CN212061131 U CN 212061131U CN 202021955591 U CN202021955591 U CN 202021955591U CN 212061131 U CN212061131 U CN 212061131U
- Authority
- CN
- China
- Prior art keywords
- detection electrode
- electrode layer
- sensor
- pressure
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The application provides a sensor, signal detection device and electronic equipment, includes: the touch screen comprises a circuit board, a pressure detection electrode layer, a capacitance touch electrode layer for forming an induction capacitor to perform touch detection and an isolation layer for shielding; the pressure detection electrode layer is arranged on the circuit board, the capacitance touch electrode layer is positioned on one side of the pressure detection electrode layer, which is back to the circuit board, and the isolation layer is positioned between the pressure detection electrode layer and the capacitance touch electrode layer; the pressure detection electrode layer comprises a driving electrode and a receiving electrode, and a coupling capacitor is formed between the driving electrode and the receiving electrode; when the pressure detection electrode layer deforms under pressure, the change value of the coupling capacitance is an electric signal corresponding to the pressure. The sensor has the functions of capacitive touch and pressure detection, the size of the sensor is effectively reduced, and the assembly difficulty of the sensor is reduced. And on the basis of enriching user experience, the false touch rate of the sensor is effectively reduced.
Description
Technical Field
The application relates to the technical field of sensors, in particular to a sensor, a signal detection device and electronic equipment.
Background
In a human-computer interaction application scene, a sensor is usually adopted to acquire user operation information, and then a user controls a terminal device. Taking the terminal device as the wireless earphone as an example, the user controls the wireless earphone by operating the operation keys on the wireless earphone. Under the development trend of miniaturization and intellectualization, the wireless earphone has higher and higher requirements on human-computer interaction.
In a human-computer interaction scheme in the prior art, a capacitive touch sensor, a pressure sensor and the like are usually used alone to detect a user operation, for example, the user operation is obtained by detecting the pressure of the pressure sensor, and for example, the user operation is obtained by detecting the capacitive touch sensor in a single click, a double click, a sliding manner, a long press manner and the like, so as to realize human-computer interaction. Individual capacitive touch sensors are susceptible to false triggering from hand touch. The single capacitive touch sensor and the single pressure sensor enable the man-machine interaction function to be single, and user experience is poor.
In the human-computer interaction scheme in the prior art, the pressure sensor is large in size and high in assembly difficulty, and a small electronic device (such as an earphone) is difficult to use the pressure sensor and a touch sensor at the same time, so that the electronic device in the prior art is difficult to realize pressure and touch detection at the same time, and the user experience is poor.
SUMMERY OF THE UTILITY MODEL
The application provides a sensor, a signal detection device and electronic equipment, which are used for partially or completely solving the technical problem existing in the prior art.
In a first aspect, an embodiment of the present application provides a sensor, including:
the touch screen comprises a circuit board, a pressure detection electrode layer, a capacitance touch electrode layer for forming an induction capacitor to perform touch detection and an isolation layer for shielding; the pressure detection electrode layer is arranged on the circuit board, the capacitance touch electrode layer is positioned on one side of the pressure detection electrode layer, which is back to the circuit board, and the isolation layer is positioned between the pressure detection electrode layer and the capacitance touch electrode layer; the pressure detection electrode layer comprises a driving electrode and a receiving electrode, and a coupling capacitor is formed between the driving electrode and the receiving electrode; when the pressure detection electrode layer deforms under pressure, the change value of the coupling capacitance is an electric signal corresponding to the pressure.
In the embodiment of the application, through set up pressure detection electrode layer, electric capacity touch-control electrode layer and be located the isolation layer that is used for the shielding between pressure detection electrode layer and the electric capacity touch-control electrode layer on the circuit board, realized possessing the integrated form sensor of electric capacity touch-control and pressure detection function simultaneously to need not install pressure sensor and touch sensor simultaneously, effectively reduced the volume of sensor, and reduced the assembly degree of difficulty of sensor. In addition, by combining capacitive touch and pressure detection, the false touch rate of the sensor can be effectively reduced on the basis of enriching user experience.
In a possible implementation manner, in the sensor provided in this embodiment of the present application, the driving electrodes and the receiving electrodes of the pressure detection electrode layer are staggered on the same plane.
In this application embodiment, compare in the capacitive pressure sensor among the prior art, adopt the electrode that is located two planes respectively usually, when the user pressed current capacitive pressure sensor, the distance between two planar electrodes reduced to the realization is to the detection of pressure, in order to guarantee to the detection of pressure, need have the headspace between two planes, adopt extra support to realize the headspace between two planes usually among the prior art. In the embodiment of the application, the driving electrodes and the receiving electrodes of the pressure detection electrode layer are staggered on the same plane, so that the pressure detection can be realized, an additional support is not needed, the cost is low, and the assembly is simple.
In a possible implementation manner, in the sensor provided in the embodiment of the present application, the number of the driving electrodes is multiple, and the number of the receiving electrodes is multiple; first coupling capacitors exist between the adjacent driving electrodes and the adjacent receiving electrodes, and the coupling capacitors are the total capacitance of the first coupling capacitors.
In the embodiment of the application, the accuracy of pressure detection of the sensor can be improved by arranging a plurality of driving electrodes and a plurality of receiving electrodes.
In one possible implementation, in the sensor provided in the embodiments of the present application, the isolation layer is grounded.
In a possible implementation manner, in the sensor provided in this embodiment of the application, the capacitive touch electrode layer includes any one of a self-capacitance detection electrode layer, a mutual capacitance detection electrode layer, or a self-integration detection electrode layer.
In a possible implementation manner of the sensor provided in this embodiment of the application, the detection electrode in the capacitive touch electrode layer is any one of a rectangular detection electrode, a circular detection electrode, or a triangular detection electrode.
In the embodiment of the application, the flexibility of designing the capacitive touch electrode layer is improved by adopting the rectangular detection electrode or the circular detection electrode or the triangular detection electrode.
In a possible implementation manner, in the sensor provided in this embodiment of the present application, the capacitive touch electrode layer includes a first detection electrode and a second detection electrode that form mutual capacitance, the first detection electrode and the second detection electrode are both in a right triangle shape, and the first detection electrode and the second detection electrode form a square shape as a whole.
In a possible implementation manner, in the sensor provided in this embodiment of the application, the capacitive touch electrode layer includes a third detection electrode and a fourth detection electrode, the third detection electrode and the fourth detection electrode are located on the same plane, and the third detection electrode and the fourth detection electrode are arranged in a staggered manner.
In one possible implementation, in the sensor provided in the embodiments of the present application, the Circuit board is a Printed Circuit Board (PCB) or a Flexible Printed Circuit board (FPC).
The following describes the signal detection device and the earphone provided in the embodiments of the present application, and the content and effect of the signal detection device and the earphone can refer to the sensor provided in the embodiments of the present application, and are not described again.
In a second aspect, an embodiment of the present application provides a signal detection apparatus, including: a signal processing circuit and the sensor provided in the first aspect and the first aspect optional manner;
the sensor is connected with the signal processing circuit; the signal processing circuit is used for generating pressure information and touch information in a distributed mode according to the coupling capacitors and the induction capacitors.
In a third aspect, an embodiment of the present application provides an electronic device, including: the signal detection apparatus as provided in the second aspect and the second aspect alternative.
In one possible embodiment, the sensor is located on the stem of the headset.
The application provides a sensor, signal detection device and electronic equipment includes: the touch screen comprises a circuit board, a pressure detection electrode layer, a capacitance touch electrode layer for forming an induction capacitor to perform touch detection and an isolation layer for shielding; the pressure detection electrode layer is arranged on the circuit board, the capacitance touch electrode layer is positioned on one side of the pressure detection electrode layer, which is back to the circuit board, and the isolation layer is positioned between the pressure detection electrode layer and the capacitance touch electrode layer; the pressure detection electrode layer comprises a driving electrode and a receiving electrode, and a coupling capacitor is formed between the driving electrode and the receiving electrode; when the pressure detection electrode layer deforms under pressure, the change value of the coupling capacitance is an electric signal corresponding to the pressure. In the embodiment of the application, through set up pressure detection electrode layer, electric capacity touch-control electrode layer and be located the isolation layer that is used for the shielding between pressure detection electrode layer and the electric capacity touch-control electrode layer on the circuit board, realized possessing the integrated form sensor of electric capacity touch-control and pressure detection function simultaneously to need not install pressure sensor and touch sensor simultaneously, effectively reduced the volume of sensor and reduced the assembly degree of difficulty of sensor. In addition, by combining capacitive touch and pressure detection, the false touch rate of the sensor can be effectively reduced on the basis of enriching user experience.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a diagram of an exemplary application scenario provided by an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a sensor provided in an embodiment of the present application;
FIG. 3 is a schematic top view of a pressure sensing electrode layer according to an embodiment of the present disclosure;
fig. 4 and fig. 5 are schematic diagrams illustrating the working principle of the pressure detection electrode layer according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a capacitive touch electrode layer according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a capacitive touch electrode layer according to another embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a capacitive touch electrode layer according to yet another embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a signal detection apparatus according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an earphone according to an embodiment of the present application.
Description of reference numerals:
11: a wireless headset;
12: a sensor;
13: a finger;
21: a circuit board;
22: a pressure detection electrode layer;
221: a drive electrode;
222: a receiving electrode;
23: an isolation layer;
24: a capacitive touch electrode layer;
31: a sensor;
32: a signal processing circuit;
33: a control module;
71: a first detection electrode;
72: a second detection electrode;
81: a third detection electrode;
82: and a fourth detection electrode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The sensor, the signal detection device and the electronic equipment have the advantages that the sensor integrating the capacitance touch and the pressure detection functions is arranged, the simultaneous installation of the pressure sensor and the touch sensor is avoided, the size of the sensor is effectively reduced, and the assembly difficulty of the sensor is reduced. In addition, by combining capacitive touch and pressure detection, the false touch rate of the sensor is effectively reduced on the basis of enriching user experience.
An exemplary application scenario of the embodiments of the present application is described below.
The sensor and the signal detection device provided by the embodiment of the application can be applied to electronic equipment, wherein the electronic equipment can be a mobile terminal or other terminal equipment which can be touched, such as a smart phone, a camera, a tablet computer, a household appliance, a wearable device and the like, for example, the electronic equipment can be an earphone provided by the embodiment of the application. Fig. 1 is a diagram of an exemplary application scenario provided by an embodiment of the present application, and as shown in fig. 1, the sensor or the signal detection device provided by the embodiment of the present application may be applied to a wireless headset 11, the wireless headset 11 includes a sensor 12, the sensor 12 is disposed on a rod portion of the wireless headset 11, a user may press the sensor 12 with a finger 13, so that the integrated sensor 12 can generate both a capacitive touch signal and a pressure signal, and the signal processing circuit performs corresponding processing to obtain a processing result. For example, when it is detected that an external object touches the earphone and at the same time, it is detected that the touch pressure reaches a certain value, it can be obtained that the touch is not a false touch of the external object but the user needs to operate the earphone, and further, the controller of the wireless earphone can generate a control instruction according to the processing result, for example, play start, play pause, and the like, so that the control circuit of the wireless earphone controls the wireless earphone according to the operation of the user.
Fig. 2 is a schematic structural diagram of a sensor provided in an embodiment of the present application, and as shown in fig. 2, the sensor provided in the embodiment of the present application may include:
a circuit board 21, a pressure detection electrode layer 22, a capacitance touch electrode layer 24 for forming an induction capacitance for touch detection, and an isolation layer 23 for shielding; the pressure detection electrode layer 22 is disposed on the circuit board 21, the capacitance touch electrode layer is disposed on a side of the pressure detection electrode layer opposite to the circuit board, and the isolation layer is disposed between the pressure detection electrode layer and the capacitance touch electrode layer. For example, when the sensor is transversely arranged, the circuit board, the pressure detection electrode layer, the isolation layer and the capacitance touch electrode layer are arranged from bottom to top in sequence, and when the sensor is longitudinally arranged, the circuit board, the pressure detection electrode layer, the isolation layer and the capacitance touch electrode layer are arranged from inside to outside in sequence, so that the capacitance touch electrode layer is located at the position, on the outer side of the electronic device where the sensor is located, of the sensor, and the capacitance touch sensor is located at the position closer to a user.
The pressure detection electrode layer 22 includes a driving electrode 221 and a receiving electrode 222, and a coupling capacitance is formed between the driving electrode 221 and the receiving electrode 222; when the pressure detection electrode layer 22 deforms under pressure, the change value of the coupling capacitance is an electrical signal corresponding to the pressure. The application provides a sensor of integrated form can realize capacitanc pressure detection and capacitanc touch-control detection simultaneously through set up two-layer electrode layer and one deck isolation layer on a circuit board for sensor overall structure is simple, the volume is less, the cost is lower, be convenient for install.
The circuit board is used for supporting the pressure detection electrode layer of the sensor, is a carrier for connecting electronic components in the sensor, and is not limited to specific types of the circuit board in the embodiment of the application. In a possible implementation, the circuit board may be a PCB, and the pressure detection electrode layer is disposed on the PCB according to the embodiment of the present application. The PCB is a circuit board commonly used for electronic structures, and the universality of the sensor can be improved by taking the PCB as the circuit board. In another possible implementation, the circuit board can be an FPC, then this application embodiment sets up the pressure detection electrode layer on the FPC, through utilizing the characteristic that the FPC can be bent and folded, the sensor that this application embodiment provided can be bent and folded and do benefit to the pressure detection electrode layer and take place deformation and the external force when disappearance, with the flexibility that improves the sensor and the accuracy of pressure detection, further reduce the volume of sensor, for being applied to small-size electronic equipment with the sensor and providing probably, for example, be applied to in small-size electronic equipment such as earphone, motion bracelet, electronic watch with the sensor, practice thrift electronic equipment's space.
A pressure detection electrode layer is arranged on the circuit board and comprises a driving electrode and a receiving electrode, and a coupling capacitor exists between the driving electrode and the receiving electrode. By detecting the change of the coupling capacitance, the pressing information of the user to the sensor can be acquired.
In one possible embodiment, the driving electrodes and the receiving electrodes of the pressure detection electrode layer are staggered on the same plane. In the embodiment of the present application, compared to a capacitive pressure sensor that generally uses electrodes respectively located on two planes in the prior art, when a user presses the existing capacitive pressure sensor, a distance between the two planar electrodes is reduced to implement pressure detection. In order to ensure the detection of the pressure, a space is required between the two planes, and an additional bracket is usually adopted in the prior art to realize the space between the two planes. In the embodiment of the application, the driving electrodes and the receiving electrodes of the pressure detection electrode layer are arranged on the same plane and are arranged in a staggered mode, so that the pressure detection can be realized, an additional support does not need to be adopted, a reserved space between two layers of electrodes does not need to be reserved, the cost is lower, the space is saved, the assembly is simple, and the detection accuracy can be higher due to the fact that the electrodes for pressure detection are arranged on the same plane in a staggered mode.
For convenience of introduction, fig. 3 is a schematic top view of a pressure detection electrode layer according to an embodiment of the present application, and with reference to fig. 2 and fig. 3, the driving electrodes 221 and the receiving electrodes 222 are arranged in a staggered manner on the same plane. In one possible embodiment, the number of the driving electrodes is one or more, and the number of the receiving electrodes is one or more. If the number of the driving electrodes and the number of the receiving electrodes are both multiple, first coupling capacitors exist between the adjacent driving electrodes and the adjacent receiving electrodes in the multiple driving electrodes and the multiple receiving electrodes, and the coupling capacitors are total capacitors of the first coupling capacitors.
By providing a plurality of driving electrodes and a plurality of receiving electrodes, the detection accuracy of the sensor for pressure signals can be improved. In the pressure detection electrode layer with the same area, the smaller the width and the distance between the driving electrode and the receiving electrode are, the more the number of the driving electrodes and the receiving electrodes can be arranged, and the detection precision of the sensor can be further improved. In a possible implementation manner, the width of the driving electrode and the receiving electrode may be 60 micrometers (μm), and the distance between the driving electrode and the receiving electrode may be set to 60 μm, which is taken as an example and not limited in this application.
In order to increase the efficiency of detecting the coupling capacitance, in one possible embodiment, a plurality of drive electrodes are connected and a plurality of receive electrodes are connected. By connecting the plurality of driving electrodes and the plurality of receiving electrodes, the total capacitance of each first coupling capacitor can be directly detected without first detecting each first coupling capacitor and then calculating the total capacitance of each first coupling capacitor.
And a coupling capacitor exists between the driving electrode and the receiving electrode of the pressure detection electrode layer, and when the pressure detection electrode layer deforms under pressure, the change value of the coupling capacitor is an electric signal corresponding to the pressure. For convenience of introduction, fig. 4 and 5 are schematic views illustrating the operation principle of the pressure detection electrode layer according to an embodiment of the present application, as shown in fig. 4 and 5, the pressure detection electrode layer 22 includes a plurality of driving electrodes 221 and receiving electrodes 222 arranged in a staggered manner, coupling capacitances exist between adjacent driving electrodes and receiving electrodes, in fig. 4 and 5, the pressure detection electrode layer is illustrated as including 4 driving electrodes and 4 receiving electrodes, and from left to right (the direction indicated by the arrow), a first coupling capacitor C1 exists between the first driving electrode and the first receiving electrode, a first coupling capacitor C2 exists between the first receiving electrode and the second driving electrode, by analogy, a first coupling capacitance Cn exists between the last driving electrode and the last receiving electrode, and the distance between adjacent driving electrodes and receiving electrodes is, for example, d. When a user presses the sensor, as shown in fig. 5, the pressure detection electrode layer of the sensor deforms, and the distance between the adjacent driving electrode and the receiving electrode increases by Δ d, and as the first coupling capacitance between the driving electrode and the receiving electrode is inversely proportional to the distance d between the driving electrode and the receiving electrode, the first coupling capacitance between the driving electrode and the receiving electrode decreases as d increases, wherein when the pressure detection electrode layer deforms, a second coupling capacitance exists between the adjacent driving electrode and the receiving electrode. For example, a second coupling capacitance C1- Δ C1 exists between the first drive electrode and the first receive electrode, a second coupling capacitance C2- Δ C2 exists between the first receive electrode and the second drive electrode, and so on, and a second coupling capacitance Cn- Δ Cn exists between the last drive electrode and the last receive electrode.
And if the electric signal corresponding to the pressure value is the change value of the coupling capacitor, the change value of the coupling capacitor is the difference between the deformed coupling capacitor and the coupling capacitor, the coupling capacitor is the total capacitance of each first coupling capacitor, and the deformed coupling capacitor is the total capacitance of each second coupling capacitor. As the above embodiments shown in fig. 4 and fig. 5 are taken as examples, that is, the variation value of the coupling capacitance is Δ C1+ Δ C2+ … … + Δ Cn, which is only taken as an example in the embodiments of the present application.
The sensor provided by the embodiment of the application further comprises a capacitance touch electrode layer, wherein the capacitance touch electrode layer is used for forming an induction capacitor so as to detect the operations of a user on the sensor, such as touch, sliding and the like, and the functions of the sensor are enriched. Compared with a capacitive touch module in the prior art, the capacitive touch module has the defect that false triggering is easily caused by the fact that a user touches the capacitive touch module, and the sensor provided by the embodiment of the application can judge the operation of the user by combining the coupling capacitor and the induction capacitor and matching with a signal processing circuit, so that the false touch rate is effectively reduced. In addition, through the sensor provided by the embodiment of the application, the capacitance touch electrode layer, the isolation layer and the pressure detection electrode layer are integrated on the circuit board, pressure touch can be realized by simultaneously detecting pressure and capacitance touch, the cost is low, the assembly is simple, and the sensor can be applied to small electronic equipment, such as a wireless earphone and the like.
The specific structure of the capacitive touch electrode layer is not limited in the embodiments of the present application, and in a possible implementation manner, the capacitive touch electrode layer may be any one of a self-capacitance detection electrode layer, a mutual capacitance detection electrode layer, or a self-integration detection electrode layer. The self-capacitance is a capacitance formed by the detection electrode and the ground, a parallel capacitance is increased when a user touches the detection electrode layer, the capacitance of the self-capacitance detection electrode layer is changed, the number of the detection electrodes can be reduced by adopting the self-capacitance detection electrode layer, and the cost is saved. Mutual capacitance refers to capacitance formed by two electrodes (one is used as a transmitting electrode and the other is used as a receiving electrode), when a user touches the touch screen, coupling of two adjacent electrodes can be influenced, so that capacitance at the intersection of the two adjacent electrodes is changed, the capacitance change at each intersection is scanned, the position of a touch point can be judged, the accuracy of capacitive touch detection can be improved by adopting a mutual capacitance detection electrode layer, and interference of sweat and temperature can be better reduced. In the detection electrode layer of each other, can form self-capacitance and mutual capacitance simultaneously, through adopting the detection electrode layer of each other, can use in multiple application scene, adaptability is stronger.
In order to detect the sliding operation of the sensor by the user through the capacitive touch electrode layer, in one possible embodiment, the detection electrodes in the capacitive touch electrode layer may be arranged in a plurality of rows and a plurality of columns; alternatively, the detection electrodes in the capacitive touch electrode layer may be arranged in a row or a column. The embodiment of the present application is only taken as an example, and is not limited thereto, and in addition, the embodiment of the present application also does not limit the shape of the detection electrode, for example, the detection electrode may be a rectangular detection electrode, a triangular detection electrode, or a circular detection electrode, and the like, and the rectangular detection electrode, the circular detection electrode, or the triangular detection electrode may be adopted, so that the flexibility of designing the capacitive touch electrode layer is improved.
The sensor that this application embodiment provided, still including being located the isolation layer that is used for the shielding between pressure measurement electrode layer and the electric capacity touch-control electrode layer, the isolation layer is used for when the health position is pressed the sensor, shields the induction capacitance that the health position produced the pressure measurement electrode layer, and then can guarantee coupling capacitance's in the pressure measurement electrode layer accuracy. The isolation layer can be a conductive isolation layer, charges generated when a user touches the isolation layer are released through the conductive isolation layer, the specific material of the isolation layer is not limited in the embodiment of the application, and the conductor can be metal copper, for example.
In the embodiment of the application, through set up pressure detection electrode layer, electric capacity touch-control electrode layer and be located the isolation layer that is used for the shielding between pressure detection electrode layer and the electric capacity touch-control electrode layer on the circuit board, realized that the sensor possesses electric capacity touch-control and pressure detection's function simultaneously to need not install pressure sensor and touch sensor simultaneously, effectively reduced the volume of sensor, and reduced the assembly degree of difficulty of sensor. In addition, by combining capacitive touch and pressure detection, the false touch rate of the sensor is effectively reduced on the basis of enriching user experience.
In a possible implementation manner, fig. 6 is a schematic structural diagram of a capacitive touch electrode layer according to an embodiment of the present disclosure, as shown in fig. 6, the capacitive touch electrode layer may be a self-capacitive touch electrode layer, and the capacitive touch electrode layer in fig. 6 includes 4 detection electrodes for illustration. The detection electrodes 1, 2, 3 and 4 are located the coplanar, and when the user utilized the finger touch electric capacity touch-control electrode layer, the detection electrode of finger touch position produced inductive capacitance with the human body, through the size and the change of inductive capacitance that detect inductive capacitance on a plurality of detection electrodes, can confirm the user to the operation of sensor, and wherein, inductive capacitance includes the inductive capacitance of a plurality of detection electrodes. For example, as shown in fig. 6, a user's finger slides from the detection electrode 1 to the detection electrode 4 through the detection electrode 2 and the detection electrode 3, when the user's finger slides from the detection electrode 1 to the detection capacitor 2, the sensing capacitance of the detection electrode 1 decreases from large to small, and the sensing capacitance of the detection electrode 2 increases from small to large, and when the user's finger slides from the detection electrode 2 to the detection electrode 3, the sensing capacitance of the detection electrode 2 decreases from large to large, and the sensing capacitance of the detection electrode 3 increases from small to large, and when the user's finger slides from the detection electrode 3 to the detection electrode 4, the sensing capacitance of the detection electrode 3 decreases from large to small, and the sensing capacitance of the detection electrode 4 increases from small to large. In the embodiment of the application, the sensing capacitor is output to the signal processing circuit, and the sensing capacitors of the plurality of detection electrodes in the sensing capacitor are detected through the signal processing circuit, so that whether the user has sliding operation on the sensor can be determined. The embodiments of the present application are merely examples, and are not limited thereto.
In another possible implementation manner, the capacitive touch electrode layer includes a first detection electrode and a second detection electrode that form mutual capacitance, the first detection electrode and the second detection electrode form a square as a whole, the first detection electrode and the second detection electrode are both in the shape of a right triangle, and the oblique side of the first detection electrode is opposite to the oblique side of the second detection electrode. For convenience of introduction, fig. 7 is a schematic structural diagram of a capacitive touch electrode layer according to another embodiment of the present application, and as shown in fig. 7, the capacitive touch electrode layer may be a self-integration detection electrode layer, in which the first detection electrode 71 is a detection electrode a and the second detection electrode 72 is a detection electrode B. The sensing capacitance may include a sensing capacitance of the detection electrode a, a sensing capacitance of the detection electrode B, and may further include capacitance signals of the detection electrode a and the detection electrode B, and the shape and the number of the detection electrodes in the embodiment of the present application are not limited thereto. Taking the example that the finger of the user slides from right to left (arrow direction shown in fig. 7) on the sensor, when the finger is close to the right side, the sensing capacitance of the detection electrode B is larger than that of the detection electrode a, and as the finger slides to the left, the sensing capacitance of the detection electrode B gradually becomes smaller, the sensing capacitance of the detection electrode a gradually becomes larger, and the sensing capacitance of the detection electrode a is gradually larger than that of the detection electrode B. In the embodiment of the application, the sensing capacitor is output to the signal processing circuit, and the sensing capacitors of the plurality of detection electrodes in the sensing capacitor are detected through the signal processing circuit, so that whether the user has sliding operation on the sensor can be determined. The embodiments of the present application are merely examples, and are not limited thereto.
In the embodiment of the application, the first detection electrode and the second detection electrode which are mutually compatible are adopted, the first detection electrode and the second detection electrode are in right-angled triangles, and the first detection electrode and the second detection electrode integrally form a square shape, so that the touch point detection and the sliding operation detection of a user are facilitated.
In yet another possible implementation manner, in the sensor provided in this embodiment of the application, the capacitive touch electrode layer includes third detection electrodes and fourth detection electrodes, and the third detection electrodes and the fourth detection electrodes are staggered.
Fig. 8 is a schematic structural diagram of a capacitive touch electrode layer according to still another embodiment of the present disclosure, as shown in fig. 8, the capacitive touch electrode layer includes 4 sets of detection electrodes, which are respectively a detection electrode M, a detection electrode N, a detection electrode P, and a detection electrode Q, the sensing capacitor includes a capacitance signal of the detection electrode M, a capacitance signal of the detection electrode N, a capacitance signal of the detection electrode P, and a capacitance signal of the detection electrode Q, each set of detection electrodes includes third and fourth detection electrodes 81 and 82 that are arranged in a staggered manner, when a finger of a user slides from right to left (in a direction indicated by an arrow in fig. 8), the sensing capacitor is output to a signal processing circuit, and the signal processing circuit detects capacitance signals of multiple detection electrodes in the sensing capacitor, so that a sliding operation of the user on a sensor can be determined. The embodiments of the present application are merely examples, and are not limited thereto.
In the embodiment of the application, the capacitive touch electrode layer comprises the third detection electrodes and the fourth detection electrodes which are positioned on the same plane and are arranged in a staggered manner, so that not only can the space of the capacitive touch electrode layer be saved, and further the space of the sensor be saved, but also the detection precision of the capacitive touch electrode layer can be improved through the third detection electrodes and the fourth detection electrodes which are arranged in a staggered manner.
Fig. 9 is a schematic structural diagram of a signal detection device according to an embodiment of the present application, and as shown in fig. 9, a signal processing circuit 32 of the signal detection device according to the embodiment of the present application and a sensor 31 according to the above embodiment of the present application are provided; the sensor 31 is connected to the signal processing circuit 32; the signal processing circuit 32 is configured to generate pressure information and touch information according to the coupling capacitor and the sensing capacitor, respectively.
According to the signal detection device provided by the embodiment of the application, the coupling capacitor and the induction capacitor of the pressure detection electrode layer are sent to the signal processing circuit through the sensor, and the signal processing circuit generates pressure information and touch information according to the coupling capacitor and the induction capacitor. The pressure information may include a pressure magnitude, a pressing time, a pressing frequency, and the like, and the touch information may include a touch position, a touch time, a touch trajectory, and the like.
An embodiment of the present application provides an earphone, fig. 10 is a schematic structural diagram of an earphone provided in an embodiment of the present application, and as shown in fig. 10, the earphone provided in the embodiment of the present application includes a signal detection device provided in the embodiment of the present application.
The signal detection means comprises a sensor 31 and a signal processing circuit 32, and the headset comprises a headset stem 111 (also called stem of the headset) and a headset head 112. By arranging the signal detection device in the earphone, the touch of the user on the earphone can be realized.
In a possible implementation manner, the sensor 31 is located at the earphone handle 111 of the earphone, which is beneficial for the user to perform touch operation on the sensor, and improves the user experience.
The earphone may further include a control module 33, the control module 33 is connected to the signal processing circuit 32, and the control module 33 is configured to generate a control signal according to the pressure information and the touch information, so as to control the earphone.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (12)
1. A sensor, comprising: the touch screen comprises a circuit board, a pressure detection electrode layer, a capacitance touch electrode layer for forming an induction capacitor to perform touch detection and an isolation layer for shielding;
the pressure detection electrode layer is arranged on the circuit board, the capacitance touch electrode layer is positioned on one side, back to the circuit board, of the pressure detection electrode layer, and the isolation layer is positioned between the pressure detection electrode layer and the capacitance touch electrode layer;
the pressure detection electrode layer comprises a driving electrode and a receiving electrode, and a coupling capacitor is formed between the driving electrode and the receiving electrode; when the pressure detection electrode layer deforms under pressure, the change value of the coupling capacitance is an electric signal corresponding to the pressure.
2. The sensor of claim 1,
the driving electrodes of the pressure detection electrode layer and the receiving electrodes are arranged in a staggered mode on the same plane.
3. The sensor of claim 2, wherein the number of the driving electrodes is plural, and the number of the receiving electrodes is plural;
first coupling capacitors exist between the adjacent driving electrodes and the adjacent receiving electrodes, and the coupling capacitors are total capacitors of the first coupling capacitors.
4. A sensor according to any of claims 1 to 3, wherein the isolation layer is grounded.
5. The sensor of claim 4, wherein the capacitive touch electrode layer comprises any one of a self-capacitance detection electrode layer, a mutual capacitance detection electrode layer, or a self-integration detection electrode layer.
6. The sensor according to claim 5, wherein the detection electrode in the capacitive touch electrode layer is any one of a rectangular detection electrode, a circular detection electrode or a triangular detection electrode.
7. The sensor according to claim 5, wherein the capacitive touch electrode layer comprises a first detection electrode and a second detection electrode which form mutual capacitance, the first detection electrode and the second detection electrode are both in a right triangle shape, and the first detection electrode and the second detection electrode form a square shape as a whole.
8. The sensor according to claim 5, wherein the capacitive touch electrode layer comprises a third detection electrode and a fourth detection electrode, the third detection electrode and the fourth detection electrode are located on the same plane, and the third detection electrode and the fourth detection electrode are staggered.
9. A sensor according to any of claims 1-3, wherein the circuit board is a printed circuit board, PCB, or a flexible printed circuit board, FPC.
10. A signal detection device, comprising: a signal processing circuit and a sensor as claimed in any one of claims 1 to 9;
the sensor is connected with the signal processing circuit;
the signal processing circuit is used for respectively generating pressure information and touch information according to the coupling capacitor and the induction capacitor.
11. An electronic device, comprising: the signal detection device of claim 10.
12. The electronic device of claim 11, wherein the electronic device is a headset and the sensor is located on a stem of the headset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021955591.5U CN212061131U (en) | 2020-09-09 | 2020-09-09 | Sensor, signal detection device, and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021955591.5U CN212061131U (en) | 2020-09-09 | 2020-09-09 | Sensor, signal detection device, and electronic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212061131U true CN212061131U (en) | 2020-12-01 |
Family
ID=73507206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021955591.5U Active CN212061131U (en) | 2020-09-09 | 2020-09-09 | Sensor, signal detection device, and electronic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212061131U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925443A (en) * | 2021-03-03 | 2021-06-08 | 深圳国微云技术有限公司 | Programmable interaction module based on multipoint pressure sense |
| CN113268163A (en) * | 2021-06-08 | 2021-08-17 | 京东方科技集团股份有限公司 | Touch display screen, electronic equipment and method for preventing touch panel from being touched mistakenly |
| WO2024124404A1 (en) * | 2022-12-13 | 2024-06-20 | 深圳市韶音科技有限公司 | Touch sensor and touch sensing device comprising same, and earphones |
-
2020
- 2020-09-09 CN CN202021955591.5U patent/CN212061131U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925443A (en) * | 2021-03-03 | 2021-06-08 | 深圳国微云技术有限公司 | Programmable interaction module based on multipoint pressure sense |
| CN113268163A (en) * | 2021-06-08 | 2021-08-17 | 京东方科技集团股份有限公司 | Touch display screen, electronic equipment and method for preventing touch panel from being touched mistakenly |
| CN113268163B (en) * | 2021-06-08 | 2024-03-15 | 京东方科技集团股份有限公司 | Touch display screen, electronic equipment and touch panel error touch prevention method |
| WO2024124404A1 (en) * | 2022-12-13 | 2024-06-20 | 深圳市韶音科技有限公司 | Touch sensor and touch sensing device comprising same, and earphones |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212061131U (en) | Sensor, signal detection device, and electronic apparatus | |
| US10162446B2 (en) | Proximity edge sensing | |
| KR101368511B1 (en) | Pointing member, position detection apparatus and position detection method | |
| KR102363531B1 (en) | Touch force sensor using inductive sensing and capacitive sensing and method of operation thereof | |
| US9110545B2 (en) | Apparatus and associated methods | |
| EP2294502B1 (en) | Multi-touch sensor patterns and stack-ups | |
| KR102262597B1 (en) | Capacitive sensor and method for determining a touch input stimulus | |
| US20080196945A1 (en) | Preventing unintentional activation of a sensor element of a sensing device | |
| US20080143681A1 (en) | Circular slider with center button | |
| EP2521016A1 (en) | Capacitive sensor having electrodes arranged on the substrate and the flex circuit | |
| US20050156912A1 (en) | Tethered stylyus for use with a capacitance-sensitive touchpad | |
| CN106383607B (en) | Touch display system with pressure sensing | |
| DE102010003575A1 (en) | Capacitive touch screen or touchpad for fingers and movable stylus | |
| CN103713742A (en) | Capacitive touch keyboard | |
| CN104777929B (en) | Control device | |
| CN206757583U (en) | Electronic installation | |
| CN107544701B (en) | Capacitive touch pressure sensor constructed from flexible substrate | |
| CN109416610B (en) | Touch control assembly, device and touch control method | |
| CN113383299A (en) | Touch input device | |
| CN112711355A (en) | Touch sensing device and electronic device | |
| CN112400154B (en) | Touch sensor panel and touch input device | |
| US20190079632A1 (en) | Electrical device, receiving circuit, and method for touch sensing | |
| CN112187244A (en) | Switch operation sensing apparatus and detection apparatus | |
| TW201128509A (en) | Signal sensing stucture for touch panel | |
| WO2022051950A1 (en) | Sensor, signal detection apparatus and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |