WO2022017247A1

WO2022017247A1 - Touch sensor, touch detection apparatus, and electronic device

Info

Publication number: WO2022017247A1
Application number: PCT/CN2021/106412
Authority: WO
Inventors: 罗崇樵; 魏海军
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2020-07-23
Filing date: 2021-07-15
Publication date: 2022-01-27
Also published as: CN211698920U

Abstract

A touch sensor, a detection apparatus, and an electronic device. The touch sensor comprises: at least two groups of sensing units disposed from top to bottom, each group of sensing units comprising a first sub-sensing unit and a second sub-sensing unit that are laterally disposed and that are meshed with one another, and the edges of the first sub-sensing unit and second sub-sensing unit that are meshed with one another being obliquely disposed. The touch sensor of the present application can achieve low costs and low power consumption while ensuring sensitivity of detecting a gesture of a user.

Description

Touch Sensors, Touch Detection Devices, and Electronic Devices

technical field

The present application relates to the technical field of sensor detection, and in particular, to a touch sensor, a touch detection device and an electronic device.

Background technique

On some small electronic devices such as smart wearable devices, in order to detect the user's gesture in real time, a dot-matrix sensor is generally set on the electronic device. The signal processing module connected to the dot-matrix sensor calculates the coordinates of the user's finger through the contact area between the user's finger and each channel of the dot-matrix sensor, and then obtains the movement track of the finger through the change of the coordinates, and judges the sliding direction and distance of the user's finger according to the movement track. , which detects the user's gesture.

However, if a dot matrix sensor is laid on a small area of a small electronic device such as a wearable device, if fewer channels are laid, the detection sensitivity for user gestures will be lower; and if more channels are laid in order to ensure detection sensitivity , the cost is high, and the scanning times of each scan of the dot matrix sensor are many, and the power consumption is high.

SUMMARY OF THE INVENTION

The present application provides a touch sensor, a touch detection device and an electronic device, which can achieve low cost and low power consumption while ensuring the sensitivity of the touch detection device to user gesture detection.

In a first aspect, an embodiment of the present application provides a touch sensor, including:

At least two groups of induction units are arranged from top to bottom; each group of induction units includes two first sub-induction units and second sub-induction units arranged in the lateral direction and meshing with each other, the first sub-induction unit and the second sub-induction unit The engaging sides of the sub-sensing units are arranged obliquely.

In the touch sensor of the embodiment of the present application, the first sub-sensing unit in each group of sensing units constitutes a longitudinal channel, and the second sub-sensing unit in each group of sensing units constitutes a longitudinal channel; since the two sub-sensing units in the same group of sensing units The units are meshed with each other and the boundary between two sub-induction units in the same group of induction units is an oblique line, so the boundary between the longitudinal channels is no longer a longitudinal straight line, that is, the boundary between the longitudinal channels is relatively longer, Therefore, the boundary between the two longitudinal channels is distributed more widely on the surface of the touch sensor, and the probability that the user's finger touches the boundary between the two longitudinal channels is higher, that is, the probability that the user's finger touches the two longitudinal channels at the same time. When calculating the lateral coordinates of the touch position of the user's finger on the touch sensor, the user's gesture can be detected only when the user's finger touches two longitudinal channels at the same time. On the touch sensor of the present application, the user's finger simultaneously touches the two longitudinal channels. In the case of a higher probability, the touch sensor of the present application has a higher probability of detecting the user's gesture in the lateral direction, that is, the touch sensor of the embodiment of the present application has a higher detection sensitivity for the user's gesture in the lateral direction; based on this, relative For a dot-matrix sensor with similar sensitivity and more channels, the touch sensor in the embodiment of the present application may use fewer sensors and need to scan fewer channels, so that the cost is relatively lower and the power consumption is relatively lower.

In a possible implementation manner, the sides where the first sub-induction unit and the second sub-induction unit are engaged in the same group of induction units are straight lines arranged obliquely;

In a possible implementation manner, the sides of the first sub-induction unit and the second sub-induction unit in the same group of induction units are parallel to each other.

In a possible implementation manner, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units have the same surface shape and the same surface area.

In a possible implementation manner, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both triangular.

In a possible implementation manner, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both right-angled triangles, and the first sub-sensing unit and the second sub-sensing unit in each group of sensing units The engaging sides of the second sub-sensing units are all the hypotenuses of a right-angled triangle.

In a possible implementation manner, the first right-angled edges of the first sub-sensing units in each group of sensing units are arranged along the longitudinal direction, and the first right-angled edges of the first sub-sensing units in each group of sensing units The sides are all on the same straight line, the first right-angled sides of the second sub-sensing units in each group of sensing units are arranged along the longitudinal direction, and the first right-angled sides of the second sub-sensing units in each group of sensing units are arranged along the longitudinal direction. are on the same straight line.

The first sub-sensing unit and the second sub-sensing unit in each group of sensing units are right-angled triangles. Compared with non-right-angled triangles, the finger on the touch sensor is calculated based on the characteristic data of the first and second sub-sensing units. The horizontal and vertical coordinates of the touch position are more accurate, so the recognition of user gestures is more accurate and sensitive.

In a possible implementation manner, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both trapezoidal, and the first sub-sensing unit and the second sub-sensing unit in each group of sensing units The engaging sides of the second sub-induction unit are all a waist of the trapezoid.

In a possible implementation manner, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both right-angled trapezoids, and the first sub-sensing unit and the second sub-sensing unit in each group of sensing units The engaging sides of the second sub-induction unit are all waists of the right-angled trapezoid that are not perpendicular to the base.

The first sub-sensing unit and the second sub-sensing unit are right-angled trapezoids, and relative to the non-right-angled trapezoids, the lateral coordinates of the touch position of the finger on the touch sensor calculated based on the characteristic data of the first sub-sensing unit and the second sub-sensing unit and vertical coordinates are more accurate, so the recognition of user gestures is more accurate and sensitive.

In a possible implementation manner, each group of sensing units forms a square as a whole.

In a possible implementation manner, the ratio of the length to the width of the touch sensor is 3:1.

In a possible implementation manner, the touch sensor includes two sets of sensing units, and the touch sensor has a length of 15 mm and a width of 5 mm.

In a possible implementation manner, the touch sensor includes two groups of sensing units.

In a second aspect, an embodiment of the present application provides a touch detection device, including: at least one touch sensor according to any one of the first aspects, and a signal processing module; wherein,

Each first sub-sensing unit and each second sub-sensing unit in the touch sensor are respectively connected to the signal processing module;

The signal processing module is used for: acquiring signal data of each of the sub-sensing units, and detecting a user's gesture according to the signal data.

In a third aspect, an embodiment of the present application provides an electronic device, including the touch detection apparatus described in the second aspect.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is an example diagram of a touch sensor used for gesture recognition in the present application being arranged on a frame of smart glasses;

FIG. 2 is a structural diagram of an embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 3 is a structural diagram of another embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 4 is a structural diagram of yet another embodiment of a touch sensor used for gesture recognition in the present application;

5 is a structural diagram of another embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 6 is a structural diagram of another embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 7 is a structural diagram of yet another embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 8 is a structural diagram of yet another embodiment of a touch sensor used for gesture recognition in the present application;

FIG. 9 is a structural diagram of yet another embodiment of a touch sensor used for gesture recognition in the present application;

10 is a flowchart of an embodiment of a sliding gesture detection method based on a touch sensor of the present application;

FIG. 11A is an exemplary diagram of vertical channel division in a touch sensor according to an embodiment of the present application;

FIG. 11B is an example diagram of horizontal channel division in a touch sensor according to an embodiment of the present application;

FIG. 12 is a schematic diagram of an electrical connection relationship of an embodiment of a touch detection device according to an embodiment of the present application.

detailed description

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

In the existing implementation scheme, on some small electronic devices such as smart wearable devices, in order to detect the user's gestures in real time, a dot-matrix sensor is generally set on the electronic device, and the dot-matrix sensor is composed of sensors with multiple rows and columns. . In the dot matrix sensor, each row of sensors or each column of sensors is called a channel of the dot matrix sensor, a row of sensors is called a transverse channel, and a column of sensors is called a longitudinal channel. In order to process the signals detected by each sensor in the dot matrix sensor and realize gesture detection, the signal processing module and the dot matrix sensor can be set to form a gesture detection device, and the signal processing module is respectively connected with each sensor in the dot matrix sensor. Connect to detect the user's gesture based on the signals detected by each sensor.

However, if dot-matrix sensors are laid on a smaller surface area of small electronic devices such as smart wearable devices, if fewer channels are laid, the detection sensitivity for user gestures will be lower; and if more channels are laid to ensure detection sensitivity The cost is high, and the electronic device scans the dot matrix sensor more times each time, and the power consumption of the dot matrix sensor is high.

Specifically, the method for detecting user gestures by the signal processing module in the prior art is as follows: the signal processing module calculates the signal value of each longitudinal channel according to the signal value detected by each sensor on each longitudinal channel, and calculates the signal value of each longitudinal channel according to the signal value of each longitudinal channel and the longitudinal channel. The channel number calculates the lateral coordinate of the touch position of the user's finger on the dot-matrix sensor, and the calculation formula of the lateral coordinate x of the touch position of the user's finger on the dot-matrix sensor can be:

F _i is the signal value detected by the longitudinal channel with the serial number i, n is the total number of vertical channels, i is the serial number of the vertical channel, the serial number of the vertical channel is generally from the vertical channel on the side of the dot matrix sensor to each vertical channel. The channel is assigned a serial number from 0 to n-1, and pitch represents the horizontal width of a vertical channel; according to a similar principle, the touch of the user's finger on the dot matrix sensor can be calculated according to the signal value of each horizontal channel and the serial number of the horizontal channel. Longitudinal coordinates of the position; by continuously obtaining the horizontal and vertical coordinates of the touch position of the user's finger on the dot-matrix sensor, the movement track of the user's finger on the dot-matrix sensor is obtained, and the user's finger is judged according to the movement track on the dot-matrix sensor. According to the sliding direction and distance, the user's gestures such as horizontal sliding, vertical sliding, etc. are detected. When the dot-matrix sensor is implemented by a capacitive sensor, the above-mentioned signal value may be the capacitance value of the capacitive signal detected by the sensor; when the dot-matrix sensor is implemented by a pressure sensor, the above-mentioned signal value may be the pressure of the sensor being touched by the user's finger value.

However, the inventor found that, based on the above method to detect user gestures, when calculating the horizontal coordinates of the touch position of the user's finger on the dot-matrix sensor, if the user's finger only touches one longitudinal channel, then even if the user's finger moves, it is calculated before and after the movement. The horizontal coordinates of , do not change, that is, the detection sensitivity of the dot-matrix sensor for user gestures is low.

For example: Suppose the dot matrix sensor has 3 longitudinal channels in total, and the serial numbers of the 3 longitudinal channels are 0 to 2 in the order of arrangement. Based on the above-mentioned horizontal coordinate calculation formula

The calculation formula of the lateral coordinate x of the touch position of the user's finger on the dot matrix sensor can be obtained as x=pitch*(0*F ₀ +1*F ₁ +2*F ₂ )/(F ₀ +F ₁ +F ₂ ), the user's finger starts from the vertical channel with serial number 0 to the vertical channel with serial number 2. When the user's finger only touches the vertical channel with serial number 0, the _{values of F 1} and F ₂ are both 0, so the horizontal coordinate x=pitch *(0*F ₀ +1*0+2*0)/(F ₀ +0+0)=0, that is to say, no matter what signal value the user's finger generates on the vertical channel with serial number 0, the user The horizontal coordinate x of the touch position of the finger on the dot matrix sensor is 0; for the same reason, if the user's finger only touches the vertical channel with serial number 1, _{the values of F 0} and F ₂ are both 0, then the calculated The horizontal coordinate x=pitch of the touch position of the user's finger on the dot-matrix sensor, that is to say, no matter how much signal value the user's finger generates on the vertical channel with serial number 1, the horizontal coordinate x is the pitch, and if the user When the finger only touches the longitudinal channel with serial number 2 as it moves, the calculated horizontal coordinate of the touch position of the user's finger on the dot-matrix sensor is x=2pitch; it can be seen that if the user's finger only touches one longitudinal channel, then Even if the user's finger moves, the calculated lateral coordinates of the touch position of the user's finger on the dot-matrix sensor before and after the movement do not change, that is, the dot-matrix sensor has low detection sensitivity for user gestures.

Based on the above analysis, it can be seen that the dot-matrix sensor cannot detect user gestures when the user's finger is only in contact with one channel. The detection sensitivity for user gestures is low.

To this end, the present application proposes a touch sensor for gesture recognition. In the case where the surface area of the sensor to be laid is constant, especially when the surface area is small, the touch sensor of the present application is relatively small compared to a dot-matrix sensor with the same number of channels. The detection sensitivity to user gestures is higher, and under the condition that the detection sensitivity to user gestures is guaranteed, compared with the dot matrix sensor, the number of channels of the sensor required by the touch sensor of the present application is relatively small and the number of channels to be scanned is relatively small. less, so the cost is relatively low and the power consumption is relatively low.

Specifically, the touch sensor in this embodiment of the present application may include: at least two sets of sensing units arranged from top to bottom, each set of sensing units includes two first sub-sensing units and second sub-sensing units that are arranged laterally and engage with each other , the engaging edges of the first sub-induction unit and the second sub-induction unit are arranged obliquely.

The above-mentioned horizontal direction is the setting direction of the first sub-sensing unit and the second sub-sensing unit, and the horizontal direction may be parallel to the horizontal axis in the coordinate system on which the horizontal and vertical coordinates of the touch position of the user's finger on the touch sensor are calculated. The oblique direction here is a direction that has a certain angle with the transverse direction, and the value range of the included angle is greater than 0 degrees and less than 90 degrees, or the included angle is greater than 90 degrees and less than 180 degrees. Hereinafter, the longitudinal direction refers to the direction perpendicular to the lateral direction on the plane where the touch sensor surface is located, and the longitudinal direction may be the direction parallel to the longitudinal axis in the above-mentioned coordinate system.

In the touch sensor of the embodiment of the present application, the first sub-sensing unit in each group of sensing units constitutes a longitudinal channel, and the second sub-sensing unit in each group of sensing units constitutes a longitudinal channel; since the two sub-sensing units in the same group of sensing units The units are meshed with each other and the boundary between the two sub-induction units in the same group of induction units is an oblique side, so that the boundary between the longitudinal channels is no longer a longitudinal straight line, that is, the boundary between the longitudinal channels is relatively longer, so The boundary between the two longitudinal channels is more widely distributed on the surface of the touch sensor, and the probability that the user's finger touches the boundary between the two longitudinal channels is higher, that is, the probability that the user's finger touches the two longitudinal channels at the same time is higher. High; in the foregoing analysis, it has been concluded that based on the above-mentioned lateral coordinate calculation formula

When calculating the lateral coordinates of the touch position of the user's finger on the touch sensor, the user's gesture can be detected only when the user's finger touches two channels at the same time. Combined with this conclusion, on the touch sensor of the present application, the user's finger touches two longitudinal channels at the same time. In the case of a higher probability, the touch sensor of the present application has a relatively higher probability of detecting a user's gesture in the lateral direction than the dot-matrix sensor, that is, the touch sensor of the embodiment of the present application has a relatively high detection sensitivity to the user's gesture in the lateral direction. higher. Compared with a dot-matrix sensor with similar sensitivity but requiring more channels, the touch sensor of the embodiment of the present application can use fewer sensors and need to scan fewer channels, so that the cost is relatively lower and the power consumption is relatively lower. .

Preferably, in order to ensure the calculation accuracy of the lateral coordinates of the touch position of the user's finger on the touch sensor, and thus to ensure the detection sensitivity of the touch sensor, the meshing edge of the first sub-sensing unit and the second sub-sensing unit in the same group of sensing units is A straight line set diagonally.

Preferably, in order to ensure the calculation accuracy of the lateral coordinates of the touch position of the user's finger on the touch sensor, the sides of the first sub-sensing unit and the second sub-sensing unit in the same group of sensing units are parallel.

Preferably, in order to ensure the accuracy of calculating the lateral and longitudinal coordinates of the touch position of the user's finger on the touch sensor, the first and second sub-sensing units in each group of sensing units have the same surface shape and surface area. The surface of the first sub-sensing unit and the surface of the second sub-sensing unit refer to the surfaces that are in contact with the user's finger and are used for detecting characteristic data of the user's finger.

The specific shapes of the surfaces of the first sub-sensing unit and the second sub-sensing unit are not limited in the embodiment of the present application. Optionally, the first and second sub-sensing units in each group of sensing units are triangles. It is preferably a right-angled triangle; or, the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both trapezoidal, preferably a right-angled trapezoid. The first sub-sensing unit and the second sub-sensing unit in each group of sensing units are right-angled triangles or right-angled trapezoids, and the touch position of the finger on the touch sensor is calculated based on the characteristic data of the first and second sub-sensing units. The horizontal and vertical coordinates are more accurate, so the recognition of user gestures is more accurate and sensitive.

The size of the surface of the first sub-sensing unit and the second sub-sensing unit, that is, the surface area, is not limited in the embodiment of the present application. Optionally, the ratio of the length to the width of the touch sensor is 3:1, which is beneficial to the device with a long and narrow touch surface, which can make full use of its limited touch surface and have high touch detection sensitivity. For example, the present application The provided touch sensor is used on the glasses with small touch area and long and narrow type, which can not only make the glasses have higher touch detection sensitivity but also reduce their cost. Optionally, the total surface area of the touch sensor is greater than or equal to the area of the contact surface between the user's finger and the object. For example, the contact surface between the user's finger and the object may generally be a rectangle of about 5mm*15mm. Preferably, when the total surface area of the touch sensor is a rectangle of about 5mm*15mm, the touch sensor includes 2 sets of sensing units, the length of the touch sensor is 15mm, the width is 5mm, the length is the dimension in the horizontal direction of the touch sensor, and the width is the vertical direction of the touch sensor Therefore, the touch sensor can have relatively smaller surface area and higher touch detection sensitivity, and only includes two groups of sensing units, so the touch sensor has low power consumption and low cost.

Compared with traditional dot-matrix sensors, the touch sensor of the embodiments of the present application is especially suitable for electronic devices that require a small surface area for laying sensors and require low power consumption, such as game consoles, remote controls, and wearable devices. Wait. For example, if the touch sensor in this embodiment of the present application includes two sets of sensing units, the length of the touch sensor is 15 mm, and the width of the touch sensor is 5 mm, the touch sensor can be laterally arranged in a narrow and long area such as a frame of smart glasses. Referring to FIG. 1 , which is an exemplary diagram of the touch sensor 10 disposed on the glasses frame of the smart glasses, compared with a dot matrix sensor of the same size, the touch sensor of the embodiment of the present application has the advantages of a user's gesture in the horizontal direction. Higher detection sensitivity.

The implementation of the touch sensor in the embodiment of the present application is exemplarily described below.

FIG. 2 is a structural diagram of a touch sensor according to an embodiment of the present application. As shown in FIG. 2 , the touch sensor may include two sets of sensing units, the two sets of sensing units are arranged up and down, and the first set of sensing units is a set of sensing units located above , including two

sub-sensing units

21 and 22 arranged laterally and meshing with each other (that is, the first sub-sensing unit and the second sub-sensing unit of the first group of sensing units), and the second group of sensing units is a set of sensing units located below The unit includes two

sub-sensing units

23 and 24 arranged laterally and meshing with each other (ie, the first and second sub-sensing units of the second group of sensing units); the sub-sensing units 21 to 24 are respectively right-angled triangles.

Preferably, the sub-sensing units 21-24 have the same surface shape and surface area, so that the calculated lateral coordinates and vertical coordinates of the touch position of the user's finger on the touch sensor are more accurate.

Referring to FIG. 2 , the first side 211 of the sub-sensing unit 21 is the hypotenuse of a right-angled triangle, the second side 212 and the third side 213 are right-angled sides; the first side 221 of the sub-sensing unit 22 is the hypotenuse of a right-angled triangle, The second side 222 and the third side 223 are right-angled sides; the first side 231 of the sub-sensing unit 23 is the hypotenuse of a right-angled triangle, the second side 232 and the third side 233 are right-angled sides; the first side 241 of the sub-sensing unit 24 is the hypotenuse of a right triangle, and the second side 242 and the third side 243 are right-angled sides;

The first side 211 of the sub-sensing unit 21 is adjacent and parallel to the first side 221 of the sub-sensing unit 22, and the first side 231 of the sub-sensing unit 23 is adjacent and parallel to the first side 241 of the sub-sensing unit 24; The first side 211 of the unit 21 and the first side 231 of the sub-sensing unit 23 are not in a straight line, and the first side 221 of the sub-sensing unit 22 and the first side 241 of the sub-sensing unit 24 are not in a straight line; the sub-sensing unit 21 The second side 212 of the sensor unit 24 is adjacent to and parallel to the second side 242 of the sub-sensing unit 24 .

Optionally, the third side 213 of the sub-sensing unit 21 and the third side 233 of the sub-sensing unit 23 are located on the same straight line, and the third side 223 of the sub-sensing unit 22 and the third side 243 of the sub-sensing unit 24 are located on the same straight line. Therefore, the four sub-sensing units 21-24 can form a square, such as the rectangle shown in FIG. 2, so that the horizontal and vertical coordinates of the touch position of the user's finger on the touch sensor are calculated with relatively higher accuracy, and the touch The sensor is relatively more sensitive to the detection of user gestures.

Optionally, as shown in FIG. 2 , the four sub-sensing units 21 to 24 form a square, so that the touch sensor shown in FIG. 2 can be arranged on an electronic device with a small surface area on which the sensor is laid, and the user’s fingers and objects are considered. The minimum length of the touch sensor can be about 15mm, and the minimum width can be about 5mm. It should be noted that 15 mm and 5 mm are only examples, and are not used to limit the minimum length and width of the touch sensor in the embodiments of the present application.

Wherein, the sub-sensing unit 21 and the sub-sensing unit 22 in FIG. 2 may constitute one lateral channel of the touch sensor, and the sub-sensing unit 23 and the sub-sensing unit 24 may constitute another lateral channel of the touch sensor; the sub-sensing unit 21 and the sub-sensing unit in FIG. 2 23 may constitute one longitudinal channel of the touch sensor, and the sub-sensing unit 22 and the sub-sensing unit 24 may constitute another longitudinal channel of the touch sensor.

Among them, the coordinate system on which the touch sensor shown in FIG. 2 calculates the horizontal and vertical coordinates may be: point A is the origin, the AB direction is the positive direction of the horizontal axis, and the AD direction is the positive direction of the vertical axis; at this time, the sub-sensing unit The serial number of the horizontal channel formed by 21 and the sub-induction unit 22 can be 0, the serial number of the horizontal channel formed by the sub-induction unit 23 and the sub-induction unit 24 can be 1; the serial number of the vertical channel formed by the sub-induction unit 21 and the sub-induction unit 23 can be 0, The serial number of the longitudinal channel formed by the unit 22 and the sub-sensing unit 24 may be 1.

In the touch sensor shown in FIG. 2 , the third side of the sub-sensing unit 21 and the sub-sensing unit 23 in the left longitudinal channel constitute the left frame AD of the touch sensor, and the second side of the sub-sensing unit 22 constitutes the upper frame AB of the touch sensor, The third side of the sub-sensing unit 22 and the sub-sensing unit 24 in the right longitudinal channel constitute the right frame BC of the touch sensor, and the second side of the sub-sensing unit 23 constitutes the lower frame CD of the touch sensor, thus forming a square ABCD, then the left The boundary line of the side longitudinal channel is a zigzag pattern formed by the first side and the second side of the sub-sensing unit 21 and the first side of the sub-sensing unit 23, and the boundary line of the right longitudinal channel is the first side of the sub-sensing unit 22. The zigzag pattern formed by the edge, the second edge and the first edge of the sub-sensing unit 24, and the boundary line extends to the vicinity of the left and right borders AD and BC of the touch sensor, so that the touch sensor of the embodiment of the present application is compared with the dot matrix sensor. The boundary line between the upper two longitudinal channels has a wider distribution range on the surface of the touch sensor, and the touch sensor of the embodiment of the present application has relatively higher detection sensitivity for gestures in the horizontal direction of the user.

Optionally, the above-mentioned sub-sensing units 21 to 24 may not be right-angled triangles, but may be deformed into non-right-angled triangles, which are not limited in this embodiment of the present application. If the sub-sensing units 21 to 24 are deformed into non-right triangles, the third side 213 of the sub-sensing unit 21 and the third side 233 of the sub-sensing unit 23 may be located on the same straight line, as shown in FIG. They are located on the same straight line and are only arranged in parallel. For example, see Figure 4. It should be noted that, for example, the left and right frames of the touch sensor shown in Figure 4 are no longer formed by the third sides of the left and right longitudinal channel neutron sensing units. For example, the left frame is a zigzag frame formed by the third side 213 of the sub-sensing unit 21, the third side 233 of the sub-sensing unit 23, and a part of the second side 212 of the sub-sensing unit 21 in the upper group of sensing units , the right frame is a zigzag frame formed by the third side 223 of the sub-sensing unit 22 , the third side 243 of the sub-sensing unit 24 , and a part of the second side 242 of the sub-sensing unit 24 in the lower group of sensing units. The touch sensor shown in FIG. 3 and FIG. 4 is particularly suitable for electronic devices on which the surface on which the sensor is laid is relatively small and has an irregular pattern.

The touch sensors shown in FIGS. 2 to 4 respectively include two groups of sensing units. Optionally, the number of groups of the sensing units included in the touch sensors shown in FIGS. 2 to 4 can be expanded from two groups to n groups, where n is greater than or equal to An integer equal to 3, for example, as shown in FIG. 5 , the number of groups of sensing units of the touch sensor shown in FIG. 2 is expanded to 4 groups. For the composition of the horizontal channel and the vertical channel of the touch sensor after the number of groups of the sensing units is expanded, reference may be made to the touch sensor shown in FIG. 2 , which will not be repeated here.

FIG. 6 is a structural diagram of another embodiment of the touch sensor of the present application. As shown in FIG. 6 , the touch sensor may include two sets of sensing units, the two sets of sensing units are arranged up and down, and the first set of sensing units is a set located above The induction unit includes two

sub-induction units

61 and 62 arranged laterally and meshing with each other (that is, the first sub-induction unit and the second sub-induction unit of the first group of induction units). A group of sensing units, including two

sub-sensing units

63 and 64 arranged laterally and meshing with each other (that is, the first and second sub-sensing units of the second set of sensing units); the sub-sensing units 61 to 64 are respectively right-angled trapezoid.

Optionally, the surface shapes and surface areas of the sub-sensing units 61 to 64 may be the same, so that the calculated horizontal and vertical coordinates of the touch position of the user's finger on the touch sensor are more accurate.

Referring to FIG. 6 , the first side of each of the sub-sensing units 61 to 64 is the hypotenuse of the right-angled trapezoid, that is, the waist that is not perpendicular to the base of the right-angled trapezoid, and the second and fourth sides are the right-angled trapezoid. base, the length of the second side is less than the length of the fourth side, and the third side is the waist perpendicular to the base of the right-angled trapezoid;

The first side of the sub-sensing unit 61 is adjacent and parallel to the first side of the sub-sensing unit 62 , the first side of the sub-sensing unit 63 is adjacent and parallel to the first side of the sub-sensing unit 64 ; The two sides are adjacent and parallel to the second side of the sub-sensing unit 64 , the second side of the sub-sensing unit 61 is also adjacent and parallel to the fourth side of the sub-sensing unit 63 , and the fourth side of the sub-sensing unit 62 is parallel to the fourth side of the sub-sensing unit 62 . The second sides of cells 64 are adjacent and parallel.

The first side of the sub-sensing unit 61 and the first side of the sub-sensing unit 63 are not on a straight line, and the first side of the sub-sensing unit 62 and the first side of the sub-sensing unit 64 are not on a straight line.

Optionally, the third side of the sub-sensing unit 61 and the third side of the sub-sensing unit 63 are located on the same line, and the third side of the sub-sensing unit 62 and the third side of the sub-sensing unit 64 are located on the same line; The fourth side of the unit 61 and the second side of the sub-sensing unit 62 (that is, the fourth side of the first sub-sensing unit and the second side of the second sub-sensing unit in the same group of sensing units) are in a straight line, and the sub-sensing unit The second side of the unit 61 and the fourth side of the sub-sensing unit 62 are in a straight line, and the fourth side of the sub-sensing unit 63 and the second side of the sub-sensing unit 64 (that is, the first sub-sensing unit in the same group of sensing units The fourth side of the sub-sensing unit 63 and the second side of the second sub-sensing unit) are on a straight line, and the second side of the sub-sensing unit 63 and the fourth side of the sub-sensing unit 64 are on a straight line, so that the four sub-sensing units 61-64 A square can be formed, such as a rectangle as shown in Figure 6, so that the calculation accuracy of the horizontal and vertical coordinates of the touch position of the user's finger on the touch sensor is relatively higher, and the touch sensor is relatively more sensitive to user gesture detection. .

Optionally, as shown in FIG. 6 , the four sub-sensing units 61 to 64 may form a square, so that the touch sensor shown in FIG. 6 can be arranged on an electronic device with a small surface area where the sensor is laid, and considering that the user’s finger and the For the contact surface of the object, the minimum length of the touch sensor can be about 15mm, and the minimum width can be about 5mm. It should be noted that 15 mm and 5 mm are only examples, and are not used to limit the minimum length and width of the touch sensor in the embodiments of the present application.

Wherein, the sub-sensing unit 61 and the sub-sensing unit 62 in FIG. 6 may constitute one lateral channel of the touch sensor, and the sub-sensing unit 63 and the sub-sensing unit 64 may constitute another lateral channel of the touch sensor; the sub-sensing unit 61 and the sub-sensing unit in FIG. 2 63 may constitute one longitudinal channel of the touch sensor, and the sub-sensing unit 62 and the sub-sensing unit 64 may constitute another longitudinal channel of the touch sensor.

Among them, the coordinate system on which the touch sensor shown in FIG. 6 calculates the horizontal and vertical coordinates may be: point A is the origin, the direction AB is the positive direction of the horizontal axis, and the direction AD is the positive direction of the vertical axis; at this time, the sub-sensing unit The serial number of the horizontal channel formed by 61 and the sub-sensing unit 62 can be 0, the serial number of the horizontal channel formed by the sub-sensing unit 63 and the sub-sensing unit 64 can be 1; the serial number of the vertical channel formed by the sub-sensing unit 61 and the sub-sensing unit 63 The serial number of the longitudinal channel formed by the unit 62 and the sub-sensing unit 64 may be 1.

In the touch sensor shown in FIG. 6 , the third side of the sub-sensing unit 61 and the sub-sensing unit 63 in the left longitudinal channel constitute the left border AD of the touch sensor, the fourth side of the sub-sensing unit 61 and the second side of the sub-sensing unit 62 The upper frame AB constituting the touch sensor, the third side of the sub-sensing unit 62 and the sub-sensing unit 64 in the right longitudinal channel constitute the right frame BC of the touch sensor, the fourth side of the sub-sensing unit 64 and the second side of the sub-sensing unit 63 The lower border CD of the touch sensor is formed to form a square ABCD, then the border of the two longitudinal channels is a zigzag pattern, and compared with the dot matrix sensor, the border of the touch sensor in the embodiment of the present application extends to be close to the left and right borders AD of the touch sensor and BC, so compared with the dot matrix sensor, the boundary distribution range between the two longitudinal channels of the touch sensor of the embodiment of the present application is wider, and the touch sensor of the embodiment of the present application has a relatively higher detection sensitivity for gestures in the horizontal direction of the user. high.

Optionally, the above-mentioned sub-sensing units 61 to 64 may not be right-angled trapezoids, but may be deformed into non-right-angled trapezoids, which are not limited in the embodiment of the present application. If the sub-sensing units 61 to 64 are deformed into non-right triangles, the third side of the sub-sensing unit 61 and the third side of the sub-sensing unit 63 may be located on the same straight line, as shown in FIG. 7 , or may not be located on the same line. On a straight line, it is only arranged in parallel. For example, see Figure 8. It should be noted that, for example, the left and right borders of the touch sensor shown in Figure 8 are no longer a straight line formed by the third side of the left and right longitudinal channel neutron sensing units. For example, the left frame is a zigzag frame formed by the third side of the

sub-sensing units

61 and 63 and a part of the second side of the sub-sensing unit 61 in the upper group of sensing units, and the right frame is formed by the third side of the

sub-sensing units

62 and 64. The three sides and a part of the second side of the lower group of sensing units neutron sensing units 64 form a zigzag frame. The touch sensor shown in FIG. 7 and FIG. 8 is particularly suitable for electronic devices on which the surface on which the sensor is laid is relatively small and has an irregular pattern.

The touch sensors shown in FIGS. 6 to 8 respectively include two groups of sensing units. Optionally, the number of groups of sensing units included in the touch sensors shown in FIGS. 6 to 8 can be expanded from two groups to n groups, where n is greater than An integer equal to 3, for example, as shown in FIG. 9 , the number of groups of the sensing units of the touch sensor shown in FIG. 6 is extended to 4 groups. For the composition of the horizontal channel and the vertical channel of the touch sensor after the number of groups of sensing units is expanded, reference may be made to the touch sensor shown in FIG. 6 , which will not be repeated here.

Hereinafter, when the touch detection apparatus shown in FIG. 2 and FIG. 6 includes 4 sub-sensing units, the flow of the sliding gesture detection method of the signal processing module will be exemplarily described. As shown in Figure 10, it can include:

Step 1001: Acquire signal data of four sub-sensing units.

Wherein, the sub-sensing unit is a capacitive sensor, and the signal data may be a capacitance value; the sub-sensing unit is a pressure sensor, and the signal data may be deformation data caused by pressure.

Step 1002 : Determine whether there is a finger touch according to the signal data of the sub-sensing unit, if so, go to Step 1003 ; otherwise, return to Step 1001 .

Step 1003: Calculate the characteristic data of the two longitudinal channels respectively according to the signal data of the sub-sensing units, and calculate the lateral coordinates of the touch position of the finger on the touch sensor according to the characteristic data of the two longitudinal channels. For the calculation formula of the lateral coordinate of the touch position of the finger on the touch sensor, please refer to the aforementioned

Correspondingly, the calculation formula of the lateral coordinate of the touch position of the finger on the touch sensor in step 1003 may be: x=pitch*(0*F ₀ +1*F ₁ )/(F ₀ +F ₁ ), the pitch is taken as The value can be set independently, which is not limited in this embodiment of the present application. Since the two sub-induction units in the same group of induction units are engaged with each other and the boundary between the two sub-induction units in the same group of induction units is an oblique line, the boundary between the two longitudinal channels is no longer a longitudinal straight line, and also That is, the boundary between the longitudinal channels is relatively longer, so that the boundary between the two longitudinal channels is distributed more widely on the surface of the touch sensor, and the probability that the user's finger touches the boundary between the two longitudinal channels is higher, that is, The probability that the user's finger touches two longitudinal channels at the same time is higher. Combined with the above-mentioned calculation formula of the lateral coordinate of the touch position of the finger on the touch sensor, it is concluded that the user's gesture can be detected only when the user's finger touches two channels at the same time. Therefore, the touch sensor of the present application has a relatively higher probability of detecting a user's gesture in the lateral direction than the dot matrix sensor, that is, the touch sensor of the embodiment of the present application has a relatively higher detection sensitivity to the user's gesture in the lateral direction; The sensitivity is similar, but a dot matrix sensor with more channels needs to be set up. The touch sensor of the embodiment of the present application can use fewer sensors and need to scan fewer channels, so that the cost is relatively lower and the power consumption is relatively lower.

The sub-sensing unit is a capacitive sensor, and the characteristic data of a longitudinal channel may be the sum of the contact area between each sub-sensing unit and the finger in the longitudinal channel. For example, see FIG. 11A , the touch sensor neutron sensing shown in FIG. 2

Units

21 and 23 constitute a longitudinal channel, assuming a longitudinal channel with serial number 0, the characteristic data of this longitudinal channel can be: the contact area of the sub-sensing unit 21 and the finger and the sum of the contact area of the sub-sensing unit 23 and the finger, Corresponding to the signal value F _{0 of the} longitudinal channel, the

sub-sensing units

22 and 24 form a longitudinal channel. Assuming that it is a longitudinal channel with a serial number of 1, the characteristic data of the longitudinal channel can be: the contact area between the sub-sensing unit 22 and the finger and The sum of the contact area between the sub-sensing unit 24 and the finger may correspond to the signal value F _{1 of the} longitudinal channel; the sub-sensing unit is a pressure sensor, and the characteristic data of a longitudinal channel may be the sum of the pressure of the finger on each sub-sensing unit in the longitudinal channel For example, as shown in FIG. 11A , the

neutron sensing units

21 and 23 of the touch sensor shown in FIG. 2 form a longitudinal channel. Assuming that it is a longitudinal channel with a serial number of 0, the characteristic data of the longitudinal channel can be: the sub-sensing unit 21 The sum of the finger pressure and the finger pressure received by the sub-sensing unit 23 can correspond to the signal value F _{0 of the} longitudinal channel. The

sub-sensing units

22 and 24 form a longitudinal channel. Assuming that the longitudinal channel with serial number 1, the characteristics of the longitudinal channel The data may be: the sum of the finger pressure product received by the sub-sensing unit 22 and the finger pressure received by the sub-sensing unit 24, which may correspond to the signal value F _{1 of the} longitudinal channel.

Step 1004: Calculate the characteristic data of the two lateral channels respectively according to the signal data of the sub-sensing unit, and calculate the vertical coordinates of the touch position of the finger on the touch sensor according to the characteristic data of the two lateral channels;

For the calculation formula of the ordinate, reference may be made to step 1004, which will not be repeated here.

The sub-sensing unit is a capacitive sensor, and the characteristic data of one lateral channel may be the sum of the contact area between each sub-sensing unit and the finger in the lateral channel. For example, see FIG. 11B , the touch sensor neutron sensing shown in FIG. 2 The

units

21 and 22 form a lateral channel, and the characteristic data of the lateral channel can be: the contact area between the sub-sensing unit 21 and the finger and the sum of the contact area between the sub-sensing unit 22 and the finger, and the

sub-sensing units

23 and 24 constitute a lateral channel, the characteristic data of this lateral channel can be: the contact area of the sub-sensing unit 23 and the finger and the sum of the contact area of the sub-sensing unit 24 and the finger; the sub-sensing unit is a pressure sensor, and the characteristic data of a lateral channel can be the The sum of the finger pressure on each sub-sensing unit in the lateral channel. For example, as shown in FIG. 11B , the touch sensor

neutron sensing units

21 and 22 shown in FIG. 2 form a lateral channel, and the characteristic data of the lateral channel can be: The sum of the finger pressure on the sensing unit 21 and the finger pressure on the sub-sensing unit 22, the

sub-sensing units

23 and 24 form a lateral channel, the characteristic data of the lateral channel can be: the sub-sensing unit 23 is subjected to the finger pressure and the sub-sensing unit 24 The sum of finger pressure.

The execution order between step 1003 and step 1004 is not limited.

Step 1005: Based on the horizontal coordinates and vertical coordinates of the touch position of the finger on the touch sensor calculated in steps 1003 to 1004, calculate the moving distance of the horizontal coordinates and the moving distance of the vertical coordinates respectively;

Step 1006: If the moving distance of the horizontal coordinate exceeds the preset first threshold, it is judged that a left-right sliding gesture occurs; if the moving distance of the vertical coordinate exceeds the preset second threshold, it is judged that a vertical sliding gesture occurs.

The first threshold and the second threshold may be the same or different, which are not limited in this embodiment of the present application.

When the number of sub-sensing units in FIGS. 2 and 6 is expanded from 2 to more than 2 (for example, 4 sub-sensing units shown in FIGS. 5 and 8 ), the method shown in FIG. 10 can still be applied , the difference is only that the number of sub-sensing units included in the longitudinal channel increases.

Referring to FIG. 12, it is a structural diagram of an embodiment of the touch detection device of the present application, including: at least one touch sensor 1210 (one touch sensor 1210 is taken as an example in FIG. 12), and a signal processing module 1220; wherein,

Each sub-sensing unit in the touch sensor 1210 (in FIG. 12 , the touch sensor includes four sub-sensing units 1 to 4 as an example) is connected to the signal processing module 1220 respectively;

The signal processing module 1220 is used for: acquiring the signal data of each sub-sensing unit, and detecting the user's gesture according to the signal data.

The touch sensor 1210 may be implemented by the touch sensor shown in any of the embodiments in FIG. 2 to FIG. 9 .

For the method for the signal processing module 1220 to detect the user gesture, reference may be made to the method shown in FIG. 10 .

It should be noted that if the touch detection device in FIG. 12 includes two or more touch sensors, the structure and surface area of the touch sensors are preferably the same. The structure here refers to the number of sub-sensing units included and, for example, FIG. 2 ~The arrangement between the sub-sensing units shown in Figure 9. More than two touch sensors can be arranged in sequence horizontally. For two adjacent touch sensors, the right border of the left touch sensor is adjacent and parallel to the left border of the right touch sensor, and the upper borders of the two touch sensors are in the In a straight line, the lower borders of the two touch sensors are in a straight line.

It should be noted that the touch detection apparatus in the embodiments of the present application can be installed in small electronic devices such as smart wearable devices, and can be further extended to be installed in electronic devices that require small area sensors such as game consoles, remote controls, and the like. The above-mentioned smart wearable devices may include, but are not limited to, smart watches, or smart glasses. Alternatively, the touch sensor of the embodiment of the present application may be disposed in the above-mentioned electronic device as a sensor for user gesture recognition instead of, for example, a dot-matrix sensor. For example, as shown in FIG. 1 , the touch sensor shown in FIG. 2 in the embodiment of the present application is provided on the outside of the glasses frame in the smart glasses, and a signal processing module may also be built in the glasses frame, so as to process the signal output by the touch sensor, and perform the user Gesture Recognition.

In the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can indicate the existence of A alone, the existence of A and B at the same time, and the existence of B alone. where A and B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, where a, b, c may be single, or Can be multiple.

Those of ordinary skill in the art can realize that the units and algorithm steps described in the embodiments disclosed herein can be implemented by a combination of electronic hardware, computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (Read-Only Memory; hereinafter referred to as: ROM), Random Access Memory (Random Access Memory; hereinafter referred to as: RAM), magnetic disk or optical disk and other various A medium on which program code can be stored.

The above are only specific embodiments of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A touch sensor, comprising:

At least two groups of induction units are arranged from top to bottom; each group of induction units includes a first sub-induction unit and a second sub-induction unit which are arranged laterally and engage with each other, the first sub-induction unit and the second sub-induction unit The edges on which the unit meshes are all set diagonally.
The touch sensor according to claim 1, characterized in that, in the same group of sensing units, the sides where the first sub-sensing unit and the second sub-sensing unit are engaged are straight lines arranged obliquely.
The touch sensor according to claim 1, wherein the first sub-sensing unit and the second sub-sensing unit in the same group of sensing units are engaged with parallel sides.
The touch sensor according to claim 3, wherein the first sub-sensing unit and the second sub-sensing unit in each group of sensing units have the same surface shape and the same surface area.
The touch sensor according to claim 4, wherein the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are all triangles.
The touch sensor according to claim 5, wherein the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are both right-angled triangles, and the first sub-sensing unit in each group of sensing units is a right triangle. The sides where the sub-induction unit and the second sub-induction unit are engaged are all the hypotenuses of a right-angled triangle.
The touch sensor according to claim 6, wherein the first right-angled edges of the first sub-sensing units in each group of sensing units are disposed along a longitudinal direction, and the first sub-sensing units in each group of sensing units The first right-angled sides of the units are all on the same straight line, the first right-angled sides of the second sub-sensing units in each group of sensing units are all arranged in the longitudinal direction, and the second sub-sensing units in each group of sensing units are arranged along the longitudinal direction. The first right-angled edges of are all on the same straight line.
The touch sensor according to claim 4, wherein the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are trapezoidal, and the first sub-sensing unit in each group of sensing units The side where the induction unit and the second sub-induction unit are engaged is a waist of the trapezoid.
The touch sensor according to claim 8, wherein the first sub-sensing unit and the second sub-sensing unit in each group of sensing units are right-angled trapezoids, and the first sub-sensing unit in each group of sensing units The sides of the sub-induction unit and the second sub-induction unit are engaged with waists in the right-angled trapezoid that are not perpendicular to the base.
The touch sensor according to claim 9, wherein each group of sensing units is formed as a whole in a square shape.
The touch sensor according to any one of claims 1 to 10, wherein the ratio of the length to the width of the touch sensor is 3:1.
The touch sensor according to claim 11, wherein the touch sensor has a length of 15 mm and a width of 5 mm.
The touch sensor according to claim 12, wherein the touch sensor comprises two groups of sensing units.
A touch detection device, comprising: at least one touch sensor according to any one of claims 1 to 13, and a signal processing module; wherein,

Each first sub-sensing unit and each second sub-sensing unit in the touch sensor are respectively connected to the signal processing module;

The signal processing module is used for: acquiring signal data detected by each of the sub-sensing units, and detecting a user's gesture according to the signal data.
An electronic device, comprising the touch detection device of claim 14 .